/* roulang page: index */
:root{
  --ink:#1C1730;
  --muted:#5A5570;
  --dim:#8E8AA3;
  --line:#E8E4F2;
  --bg:#F7F5FB;
  --white:#FFFFFF;
  --brand:#2B1B4D;
  --brand-2:#4A2E85;
  --brand-3:#6D4AC7;
  --neon:#3DDC97;
  --flame:#FF7A45;
  --dark:#191227;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-dark:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-btn2:10px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(43,27,77,.08);
  --sh-hover:0 14px 34px rgba(43,27,77,.14);
  --sh-lg:0 24px 60px rgba(25,18,39,.18);
  --t:200ms cubic-bezier(.4,0,.2,1);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(61,220,151,.45);outline-offset:2px;border-radius:8px}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
.skip:focus{left:0}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
@media (min-width:1280px){.container{max-width:1280px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand);color:#E9E4F7;font-size:13px;line-height:1.6}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap}
.topbar-left{display:flex;align-items:center;gap:10px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--neon);box-shadow:0 0 0 4px rgba(61,220,151,.18);display:inline-block}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-right a:hover{color:var(--neon)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(43,27,77,.10)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:76px;transition:min-height var(--t)}
.site-header.is-stuck .header-inner{min-height:64px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:11px;background:var(--grad);display:grid;place-items:center;box-shadow:0 6px 16px rgba(43,27,77,.28)}
.logo-mark svg{width:20px;height:20px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:800;color:var(--brand)}
.logo-text span{font-size:11px;color:var(--dim);letter-spacing:.08em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px;flex-wrap:nowrap}
.nav-link{
  display:inline-block;padding:10px 14px;border-radius:var(--r-btn2);font-size:15px;font-weight:600;color:var(--muted);
  position:relative;transition:color var(--t),background var(--t);white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:rgba(109,74,199,.08)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-item{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 12px);right:-160px;width:800px;background:#fff;border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--sh-lg);padding:22px;display:grid;grid-template-columns:1fr 1fr 1.1fr 1fr;gap:20px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;color:var(--dim);letter-spacing:.06em;margin-bottom:10px}
.mega-link{display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--muted);transition:background var(--t),color var(--t)}
.mega-link:hover{background:rgba(109,74,199,.08);color:var(--brand)}
.mega-post{display:block;padding:9px 10px;border-radius:10px;transition:background var(--t)}
.mega-post:hover{background:rgba(109,74,199,.08)}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.mega-post span{font-size:12px;color:var(--dim)}
.mega-card{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg);display:flex;flex-direction:column}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.mega-card div{padding:12px}
.mega-card p{font-size:13px;color:var(--muted);margin-bottom:10px}
.hamburger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--brand);transition:transform var(--t),opacity var(--t)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 抽屉 ---------- */
.overlay{position:fixed;inset:0;background:rgba(25,18,39,.5);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:120}
.overlay.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:400px;background:#fff;z-index:130;
  transform:translateX(102%);transition:transform 260ms cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;box-shadow:-20px 0 50px rgba(25,18,39,.2);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:18px;color:var(--muted)}
.drawer-body{padding:16px 20px;overflow-y:auto;flex:1}
.drawer-link{display:block;padding:13px 12px;border-radius:12px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer-link:hover{background:rgba(109,74,199,.08)}
.drawer-group-title{font-size:12px;color:var(--dim);letter-spacing:.08em;margin:16px 0 6px}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--t),box-shadow var(--t),filter var(--t),background var(--t),color var(--t),border-color var(--t);
  border:1.5px solid transparent;text-align:center;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(43,27,77,.24)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 32px rgba(43,27,77,.3)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:rgba(43,27,77,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.96)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{filter:brightness(.96);transform:translateY(-2px)}
.btn-light:active{transform:translateY(0)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-sm{padding:11px 20px;font-size:14px;border-radius:var(--r-btn2)}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.5;pointer-events:none;box-shadow:none}
.text-link{color:var(--brand-3);font-weight:600;border-bottom:1px solid rgba(109,74,199,.4);padding-bottom:1px;transition:border-color var(--t),color var(--t)}
.text-link:hover{color:var(--brand);border-bottom-color:var(--brand)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.tight{padding-top:56px}
.section.block-bg{background:var(--bg)}
.section.white-bg{background:#fff}
.section-head{max-width:740px;margin-bottom:42px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-3);
  background:rgba(109,74,199,.1);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:16px;letter-spacing:.02em;
}
.eyebrow.on-dark{color:#fff;background:rgba(61,220,151,.16)}
.section-head h2{font-size:clamp(24px,2.4vw,34px);margin-bottom:14px}
.lead{color:var(--muted);font-size:16.5px;line-height:1.9}
.on-dark .lead{color:#C6C0DA}

/* ---------- Hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--dark)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.55}
.hero-mask{position:absolute;inset:0;background:linear-gradient(135deg,rgba(25,18,39,.92) 0%,rgba(43,27,77,.82) 55%,rgba(74,46,133,.6) 100%)}
.hero-mesh{position:absolute;inset:0;opacity:.06;background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);background-size:44px 44px}
.hero-inner{position:relative;padding:76px 0 64px;display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  background:rgba(61,220,151,.16);border:1px solid rgba(61,220,151,.5);color:#E7FFF4;
  padding:7px 14px;border-radius:var(--r-pill);margin-bottom:20px;
}
.hero h1{font-size:clamp(30px,4vw,52px);line-height:1.24;margin-bottom:18px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#3DDC97,#9AF3CE);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:18px;color:#D7D2E8;max-width:520px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-top:1px solid rgba(255,255,255,.16);padding-top:24px}
.trust-item b{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2}
.trust-item span{font-size:13px;color:#B9B4CC}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--r-dark);box-shadow:0 30px 70px rgba(0,0,0,.4);aspect-ratio:16/11;object-fit:cover;width:100%}
.hero-float{
  position:absolute;left:-18px;bottom:-20px;background:#fff;color:var(--ink);border-radius:16px;padding:14px 18px;
  box-shadow:var(--sh-lg);display:flex;align-items:center;gap:12px;max-width:78%;
}
.hero-float .ring{width:38px;height:38px;border-radius:50%;background:rgba(61,220,151,.16);display:grid;place-items:center;flex-shrink:0}
.hero-float strong{font-size:14px;display:block}
.hero-float small{font-size:12px;color:var(--dim)}
.stamp{
  position:absolute;top:18px;left:18px;width:62px;height:62px;border-radius:12px;
  background:var(--flame);color:#fff;font-size:12px;font-weight:800;text-align:center;line-height:1.2;
  display:grid;place-items:center;box-shadow:0 10px 24px rgba(255,122,69,.4);
}

/* ---------- 胶囊条 ---------- */
.pills-wrap{background:#fff;border-bottom:1px solid var(--line)}
.pills{display:flex;gap:10px;overflow-x:auto;padding:18px 0;scrollbar-width:none}
.pills::-webkit-scrollbar{display:none}
.pill{
  flex:0 0 auto;padding:10px 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--muted);background:#fff;transition:all var(--t);white-space:nowrap;
}
.pill:hover{color:var(--brand);border-color:rgba(109,74,199,.4);background:rgba(109,74,199,.06)}
.pill.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(43,27,77,.2)}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.news-feature{
  grid-column:1/-1;display:grid;grid-template-columns:40% 1fr;gap:0;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t);
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.news-feature .media{position:relative;overflow:hidden;min-height:260px}
.news-feature .media img{width:100%;height:100%;object-fit:cover;transition:transform 280ms ease}
.news-feature:hover .media img{transform:scale(1.04)}
.news-feature .body{padding:28px 30px;display:flex;flex-direction:column;justify-content:center}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
  display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.news-card .media{position:relative;overflow:hidden}
.news-card .media img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform 280ms ease}
.news-card:hover .media img{transform:scale(1.04)}
.badge{
  display:inline-block;font-size:12px;font-weight:700;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(43,27,77,.1);color:var(--brand);letter-spacing:.02em;
}
.badge.on-img{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.94);color:var(--brand);box-shadow:0 4px 12px rgba(0,0,0,.14)}
.badge.flame{background:var(--flame);color:#fff}
.badge.neon{background:rgba(61,220,151,.18);color:#1F7A55;border:1px solid rgba(61,220,151,.5)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-title{font-size:18px;margin:12px 0 10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--t)}
.news-card:hover .card-title,.news-feature:hover .card-title{color:var(--brand-3)}
.card-text{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--dim)}
.card-meta .arrow{width:30px;height:30px;border-radius:50%;background:rgba(109,74,199,.1);display:grid;place-items:center;color:var(--brand-3);transition:all var(--t)}
.news-card:hover .card-meta .arrow,.news-feature:hover .card-meta .arrow{background:var(--brand-3);color:#fff;transform:translateX(3px)}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:52px 24px;text-align:center;
}
.empty-state .placeholder{width:112px;height:76px;margin:0 auto 18px;border-radius:12px;background:linear-gradient(135deg,#EDE9F8,#F7F5FB);border:1px solid var(--line);position:relative;overflow:hidden}
.empty-state .placeholder::before,.empty-state .placeholder::after{content:"";position:absolute;border-radius:6px;background:#DCD5EE}
.empty-state .placeholder::before{left:14px;top:16px;width:52px;height:8px}
.empty-state .placeholder::after{left:14px;top:32px;width:78px;height:8px}
.empty-state p{color:var(--muted);margin-bottom:18px}

/* ---------- 优惠阶梯 ---------- */
.tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;align-items:start}
.tier{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh);
  position:relative;transition:transform var(--t),box-shadow var(--t);
}
.tier:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.tier:nth-child(2){margin-top:24px}
.tier:nth-child(3){margin-top:48px}
.tier:nth-child(4){margin-top:72px}
.tier.recommend{border-color:rgba(109,74,199,.5);border-top:4px solid var(--brand-3);box-shadow:0 16px 40px rgba(43,27,77,.14)}
.tier-num{
  font-size:34px;font-weight:800;color:transparent;-webkit-text-stroke:1.6px rgba(109,74,199,.65);line-height:1;margin-bottom:12px;
}
.tier h3{font-size:19px;margin-bottom:8px}
.tier p{font-size:13.5px;color:var(--dim);margin-bottom:14px}
.tier-list{display:flex;flex-direction:column;gap:9px;margin:0 0 20px;padding-top:16px;border-top:1px dashed var(--line)}
.tier-list li{display:flex;gap:9px;font-size:14px;color:var(--muted);line-height:1.7}
.tier-list svg{width:16px;height:16px;flex-shrink:0;margin-top:5px;color:var(--ok)}

/* ---------- 套餐对比 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;display:flex;flex-direction:column;
  box-shadow:var(--sh);transition:transform var(--t),box-shadow var(--t);position:relative;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-hover)}
.plan.featured{border:1.5px solid rgba(109,74,199,.55);transform:scale(1.03);box-shadow:0 22px 50px rgba(43,27,77,.16);z-index:2}
.plan.featured:hover{transform:scale(1.03) translateY(-4px)}
.plan-tag{
  position:absolute;top:-13px;left:24px;background:var(--grad);color:#fff;font-size:12px;font-weight:700;
  padding:5px 14px;border-radius:var(--r-pill);box-shadow:0 8px 18px rgba(43,27,77,.24);
}
.plan h3{font-size:20px;margin-bottom:6px}
.plan-sub{font-size:13.5px;color:var(--dim);margin-bottom:18px}
.plan-rows{display:flex;flex-direction:column;gap:2px;margin-bottom:22px}
.plan-row{display:flex;align-items:center;gap:11px;min-height:46px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--muted)}
.plan-row:last-child{border-bottom:0}
.ico{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;flex-shrink:0}
.ico svg{width:12px;height:12px}
.ico.yes{background:rgba(47,163,107,.14);color:var(--ok)}
.ico.no{background:rgba(229,72,77,.12);color:var(--err)}
.ico.mid{background:rgba(255,176,32,.16);color:#B77A00}
.plan-foot{margin-top:auto}

/* ---------- 限时入口（深色） ---------- */
.flash{position:relative;background:var(--dark);color:#fff;overflow:hidden}
.flash-mesh{position:absolute;inset:0;opacity:.06;background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);background-size:40px 40px}
.flash-glow{position:absolute;width:520px;height:520px;right:-160px;top:-200px;border-radius:50%;background:radial-gradient(circle,rgba(109,74,199,.6),transparent 68%)}
.flash-inner{position:relative;display:grid;grid-template-columns:1fr 1.05fr auto;gap:34px;align-items:center}
.count-row{display:flex;gap:12px;margin-top:18px}
.count-box{
  width:64px;height:64px;border-radius:14px;border:1.5px solid rgba(61,220,151,.6);
  background:rgba(61,220,151,.08);display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.count-box b{font-size:24px;font-weight:800;color:#EAFBF3;line-height:1}
.count-box span{font-size:11px;color:#8FA99C;margin-top:4px}
.progress-head{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;color:#C6C0DA;margin-bottom:10px}
.progress-head b{color:#fff;font-size:16px}
.progress{height:10px;border-radius:var(--r-pill);background:rgba(255,255,255,.14);overflow:hidden;margin-bottom:12px}
.progress-bar{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#3DDC97,#6D4AC7);width:82%;transition:width 600ms ease}
.flash-note{font-size:13px;color:#9C96B2;line-height:1.7}
.flash-actions{display:flex;flex-direction:column;gap:12px}

/* ---------- 表单 ---------- */
.form-section-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
.info-list{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item .ring{width:42px;height:42px;border-radius:12px;background:rgba(109,74,199,.1);display:grid;place-items:center;flex-shrink:0;color:var(--brand-3)}
.info-item b{display:block;font-size:15.5px;margin-bottom:2px}
.info-item span{font-size:14px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:var(--sh)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px;display:flex;flex-direction:column}
.field label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:7px}
.field .req{color:var(--err)}
.input,.select,.textarea{
  height:46px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:#FCFBFE;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);font-size:15px;width:100%;
}
.textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.input:hover,.select:hover,.textarea:hover{background:#fff}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--brand-3);box-shadow:0 0 0 3px rgba(109,74,199,.14);background:#fff}
.field.error .input,.field.error .select,.field.error .textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(229,72,77,.12)}
.field .err-msg{font-size:12px;color:var(--err);margin-top:6px;display:none}
.field.error .err-msg{display:block}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.7}
.check-line input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-3);flex-shrink:0}
.form-msg{display:none;border-radius:var(--r-btn);padding:13px 16px;font-size:14px;margin-bottom:18px}
.form-msg.ok{display:block;background:rgba(47,163,107,.12);color:#1E7A4F;border:1px solid rgba(47,163,107,.35)}
.form-msg.bad{display:block;background:rgba(229,72,77,.1);color:#A3242A;border:1px solid rgba(229,72,77,.3)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow var(--t),border-color var(--t)}
.faq-item:hover{box-shadow:var(--sh)}
.faq-item.open{border-color:rgba(109,74,199,.4);box-shadow:var(--sh)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:20px 22px;font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-q:hover{color:var(--brand-3)}
.faq-icon{width:26px;height:26px;border-radius:50%;background:rgba(109,74,199,.1);color:var(--brand-3);display:grid;place-items:center;flex-shrink:0;transition:transform 180ms ease;font-size:16px;font-weight:700;line-height:1}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand-3);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms cubic-bezier(.4,0,.2,1)}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--grad);color:#fff;border-radius:24px;padding:48px 44px;display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;box-shadow:0 26px 60px rgba(43,27,77,.28)}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:#E4DFF3;max-width:620px}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B9B4CC;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding:62px 0 40px}
.footer-brand b{display:block;color:#fff;font-size:17px;font-weight:800;margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.9;max-width:300px}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;transition:color var(--t)}
.footer-links a:hover{color:var(--neon)}
.footer-sub{display:flex;gap:10px;margin-top:16px}
.footer-sub input{
  flex:1;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  padding:0 14px;color:#fff;font-size:14px;
}
.footer-sub input::placeholder{color:#7E7894}
.footer-sub input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(61,220,151,.2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8E8AA3}
.footer-bottom a:hover{color:var(--neon)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;box-shadow:0 12px 28px rgba(43,27,77,.34);opacity:0;visibility:hidden;
  transition:opacity var(--t),visibility var(--t),transform var(--t);z-index:90;
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-3px);background:var(--brand-2)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .main-nav .nav-link{padding:10px 10px;font-size:14px}
  .mega-panel{right:-100px;width:700px;grid-template-columns:1fr 1fr 1fr}
  .mega-panel .mega-col-latest{display:none}
  .plans{gap:18px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .header-actions .btn-sm{display:none}
  .section{padding:60px 0}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:56px 0 48px}
  .hero-visual{order:-1}
  .hero-visual img{aspect-ratio:16/9}
  .hero-float{position:static;margin-top:14px;max-width:100%}
  .trust-row{grid-template-columns:repeat(2,1fr);gap:20px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-feature{grid-template-columns:1fr}
  .news-feature .media{min-height:210px}
  .tiers{grid-template-columns:repeat(2,1fr)}
  .tier:nth-child(2),.tier:nth-child(3),.tier:nth-child(4){margin-top:0}
  .tier.recommend{margin-top:0}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan.featured{transform:none}
  .plan.featured:hover{transform:translateY(-4px)}
  .flash-inner{grid-template-columns:1fr;gap:26px}
  .flash-actions{flex-direction:row;flex-wrap:wrap}
  .form-section-grid{grid-template-columns:1fr;gap:30px}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:48px 0 30px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .hero h1{font-size:28px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{width:100%}
  .trust-item b{font-size:22px}
  .news-grid{grid-template-columns:1fr}
  .tiers{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr;gap:0}
  .form-card{padding:22px}
  .faq-q{font-size:15.5px;padding:17px 18px}
  .faq-a p{padding:0 18px 18px}
  .cta-band{border-radius:18px}
  .cta-band .actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .count-box{width:52px;height:52px}
  .count-box b{font-size:20px}
}
@media (max-width:575px){
  .topbar-right{display:none}
  .logo-text b{font-size:15px}
  .stamp{width:54px;height:54px;font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --primary:#2B1B4D;
  --primary-2:#4A2E85;
  --primary-3:#6D4AC7;
  --neon:#3DDC97;
  --orange:#FF7A45;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --dark:#191227;
  --ink:#1C1730;
  --ink-2:#5A5570;
  --ink-3:#8E8AA3;
  --line:#E8E4F2;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-btn:12px;
  --r-sm:10px;
  --shadow:0 8px 24px rgba(43,27,77,.08);
  --shadow-h:0 14px 34px rgba(43,27,77,.14);
  --t:200ms cubic-bezier(.4,0,.2,1);
  --cw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:var(--primary-3);text-decoration:none;transition:color var(--t),opacity var(--t)}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.32;color:var(--ink)}
p{margin:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(61,220,151,.45);border-radius:8px}
.container{width:100%;max-width:var(--cw);margin:0 auto;padding:0 24px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-weight:600;font-size:15.5px;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t),filter var(--t);
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(43,27,77,.22)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-h);color:#fff}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary);border-radius:var(--r-sm)}
.btn-ghost:hover{background:rgba(43,27,77,.08);transform:translateY(-2px);color:var(--primary)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--primary);border-radius:var(--r-btn)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.22);color:var(--primary)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-sm)}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.6}
.badge-cat{background:rgba(43,27,77,.10);color:var(--primary)}
.badge-line{border:1px solid var(--line);color:var(--ink-2);background:#fff}
.badge-hot{background:var(--orange);color:#fff}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--primary);color:#EFEAFB;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px}
.topbar-right{color:#C8BEE8;white-space:nowrap}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow var(--t),background var(--t)}
.site-header.is-stuck{box-shadow:0 10px 28px rgba(43,27,77,.10)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:76px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;box-shadow:0 8px 18px rgba(43,27,77,.24);flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:16px;font-weight:800;color:var(--primary);letter-spacing:-.01em}
.brand-text i{font-style:normal;font-size:12.5px;color:var(--primary-3);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink-2);text-decoration:none;transition:color var(--t),background var(--t);
}
.nav-link:hover{color:var(--primary);background:rgba(43,27,77,.06);text-decoration:none}
.nav-link.active{color:var(--primary);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--grad)}
.nav-item{position:relative}
.nav-item.has-mega>.nav-link::before{content:"";display:inline-block;width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translate(-2px,-2px);margin-left:6px;vertical-align:middle;opacity:.6}
.mega-panel{
  position:absolute;top:calc(100% + 12px);right:0;width:840px;
  display:grid;grid-template-columns:1.05fr 1.05fr 1.3fr 1fr;gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 24px 60px rgba(43,27,77,.20);
  padding:24px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel,.nav-item.has-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin-bottom:10px}
.mega-link{display:block;padding:7px 0;font-size:14.5px;color:var(--ink-2)}
.mega-link:hover{color:var(--primary-3);text-decoration:none;padding-left:4px}
.mega-col-latest .mega-post{display:block;padding:9px 0;border-bottom:1px dashed var(--line)}
.mega-col-latest .mega-post:last-child{border-bottom:0}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.mega-post span{font-size:12px;color:var(--ink-3)}
.mega-post:hover{text-decoration:none}
.mega-post:hover b{color:var(--primary-3)}
.mega-card{background:var(--bg);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:10px}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px}
.mega-card p{font-size:13.5px;color:var(--ink-2);line-height:1.7;margin-bottom:10px}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.menu-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:22px 0 0}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);overflow-x:auto;white-space:nowrap;scrollbar-width:none}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--primary-3)}
.breadcrumb .sep{color:#C3BDD6}
.breadcrumb .now{color:var(--ink-3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;display:inline-block;vertical-align:bottom}

/* ============ 主体布局 ============ */
.article-main{padding:26px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 316px;gap:32px;align-items:start;padding-bottom:64px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:38px 44px 42px}
.article-head .badge-cat{margin-bottom:16px}
.article-head h1{font-size:clamp(27px,3vw,38px);line-height:1.32;margin-bottom:18px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--ink-3);padding-bottom:18px;border-bottom:1px solid var(--line)}
.article-meta b{font-weight:600;color:var(--ink-2)}
.article-actions{display:flex;flex-wrap:wrap;gap:10px;padding:18px 0 0}
.article-cover{margin:24px 0 8px}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px}
.article-cover figcaption{font-size:13px;color:var(--ink-3);margin-top:10px;text-align:center}

/* 正文排版 */
.article-body{font-size:17px;line-height:1.9;color:#241E3B;margin-top:22px;max-width:100%}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:25px;margin:42px 0 16px;padding-left:16px;scroll-margin-top:110px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--grad)}
.article-body h3{font-size:19.5px;margin:30px 0 12px;color:var(--primary)}
.article-body h4{font-size:17px;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:10px;color:#2C2547}
.article-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:3px;background:var(--neon)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.28em;width:18px;height:18px;border-radius:6px;
  background:rgba(43,27,77,.10);color:var(--primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;background:#F4F2FB;border-left:4px solid var(--primary-3);
  border-radius:0 12px 12px 0;color:#3A3358;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:22px 0;border-radius:14px;width:100%}
.article-body a{color:var(--primary-3);text-decoration:underline;text-underline-offset:4px}
.article-body a:hover{color:var(--primary);text-decoration-thickness:2px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body thead{background:#F4F2FB}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:#FBFAFE}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body hr{border:0;border-top:1px dashed var(--line);margin:32px 0}
.article-body strong{font-weight:700;color:var(--primary)}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line)}
.article-tags .badge-line{transition:border-color var(--t),color var(--t),transform var(--t)}
.article-tags a.badge-line:hover{border-color:var(--primary-3);color:var(--primary-3);transform:translateY(-2px);text-decoration:none}

.empty-state{text-align:center;padding:64px 20px}
.empty-state .empty-mark{width:88px;height:88px;margin:0 auto 20px;border-radius:24px;background:var(--bg);border:1px dashed var(--line);display:flex;align-items:center;justify-content:center}
.empty-state h2{font-size:22px;margin-bottom:12px}
.empty-state p{color:var(--ink-2);max-width:460px;margin:0 auto 24px}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:20px 22px}
.side-title{font-size:16px;font-weight:800;color:var(--primary);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:8px;height:8px;border-radius:3px;background:var(--neon)}
.toc-card{position:sticky;top:100px}
.toc-list li{margin-bottom:2px}
.toc-list a{display:block;padding:7px 0 7px 12px;font-size:14.5px;color:var(--ink-2);border-left:2px solid transparent;line-height:1.6}
.toc-list a:hover{color:var(--primary-3);border-left-color:var(--primary-3);text-decoration:none}
.toc-list a.on{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:rgba(43,27,77,.04)}
.hot-list li{padding:11px 0;border-bottom:1px dashed var(--line)}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list a{font-size:14.5px;color:var(--ink);line-height:1.65;display:block}
.hot-list a:hover{color:var(--primary-3);text-decoration:none}
.hot-list span{font-size:12.5px;color:var(--ink-3)}
.side-cta{background:var(--dark);border-color:var(--dark);color:#E7E2F5}
.side-cta .side-title{color:#fff}
.side-cta p{font-size:14px;color:#B9B4CC;line-height:1.85;margin-bottom:16px}
.quick-links{display:flex;flex-direction:column;gap:8px}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 14px;border-radius:11px;
  background:var(--bg);font-size:14.5px;color:var(--ink);border:1px solid transparent;transition:all var(--t);
}
.quick-links a::after{content:"›";color:var(--ink-3);font-size:18px;line-height:1}
.quick-links a:hover{border-color:rgba(109,74,199,.4);color:var(--primary-3);transform:translateX(3px);text-decoration:none}

/* ============ 上下篇 / 相关推荐 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:56px}
.post-nav a{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px 22px;box-shadow:var(--shadow);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);display:block;
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--shadow-h);border-color:rgba(109,74,199,.35);text-decoration:none}
.post-nav .lab{font-size:12.5px;color:var(--ink-3);letter-spacing:.08em}
.post-nav .ttl{font-size:15.5px;font-weight:700;color:var(--ink);margin-top:6px;line-height:1.6}
.post-nav .next{text-align:right}
.sec-head{margin-bottom:26px}
.sec-head .kicker{font-size:13px;font-weight:700;color:var(--primary-3);letter-spacing:.1em;margin-bottom:8px}
.sec-head h2{font-size:28px}
.relate-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:64px}
.relate-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform var(--t),box-shadow var(--t)}
.relate-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-h)}
.relate-card .thumb{overflow:hidden}
.relate-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform 280ms cubic-bezier(.4,0,.2,1)}
.relate-card:hover img{transform:scale(1.04)}
.relate-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.relate-body h3{font-size:17.5px;line-height:1.55}
.relate-card:hover h3{color:var(--primary-3)}
.relate-body p{font-size:14px;color:var(--ink-2);line-height:1.8;flex:1}
.relate-body .more{font-size:13.5px;color:var(--primary-3);font-weight:600}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;padding:52px 48px;margin-bottom:72px;
  background:var(--dark);color:#fff;display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-band>*{position:relative}
.cta-band h2{color:#fff;font-size:29px;margin-bottom:12px}
.cta-band p{color:#B9B4CC;font-size:15.5px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#B9B4CC;padding:64px 0 28px;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px}
.footer-brand b{display:block;color:#fff;font-size:18px;font-weight:800;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.9}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#B9B4CC;font-size:14px}
.footer-links a:hover{color:var(--neon);text-decoration:none}
.footer-sub{display:flex;gap:8px;margin-top:14px}
.footer-sub input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:11px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;
}
.footer-sub input::placeholder{color:#8E8AA3}
.footer-sub input:focus{border-color:var(--neon);box-shadow:0 0 0 3px rgba(61,220,151,.22);outline:none}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:#8E8AA3;
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 26px rgba(43,27,77,.30);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),visibility var(--t);z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-2);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 292px;gap:26px}
  .mega-panel{width:720px}
}
@media (max-width:991px){
  .header-inner{min-height:68px;gap:14px}
  .menu-toggle{display:flex}
  .header-actions .btn{display:none}
  .main-nav{
    position:fixed;top:0;right:-86%;width:86%;max-width:360px;height:100vh;overflow-y:auto;
    flex-direction:column;align-items:stretch;gap:2px;background:#fff;padding:22px 20px 32px;
    box-shadow:-20px 0 50px rgba(43,27,77,.18);transition:right 260ms cubic-bezier(.4,0,.2,1);margin-left:0;z-index:90;
  }
  .site-header.nav-open .main-nav{right:0}
  .nav-link{padding:13px 8px;font-size:16px;border-radius:10px}
  .nav-link.active::after{left:8px;right:auto;width:22px}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;
    grid-template-columns:1fr;padding:6px 4px 12px;gap:14px;display:none;
  }
  .nav-item.has-mega.is-open .mega-panel{display:grid}
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-side{order:2}
  .toc-card{position:static}
  .article-card{padding:28px 24px 32px}
  .post-nav{grid-template-columns:1fr}
  .relate-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .topbar-inner{justify-content:center;text-align:center}
  .topbar-right{display:none}
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .sec-head h2{font-size:23px}
  .relate-grid{grid-template-columns:1fr}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .crumb-wrap{padding-top:16px}
  .article-main{padding-top:18px}
}
@media (max-width:519px){
  .brand-text b{font-size:14.5px}
  .brand-text i{font-size:11.5px}
  .article-card{padding:22px 18px 26px}
  .article-actions .btn{flex:1}
  .to-top{right:16px;bottom:16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .relate-card:hover,.post-nav a:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#2B1B4D;
  --brand-2:#4A2E85;
  --brand-3:#6D4AC7;
  --lime:#3DDC97;
  --orange:#FF7A45;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --dark:#191227;
  --text:#1C1730;
  --muted:#5A5570;
  --weak:#8E8AA3;
  --line:#E8E4F2;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-dark:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-btn-sm:10px;
  --shadow:0 8px 24px rgba(43,27,77,.08);
  --shadow-hover:0 14px 34px rgba(43,27,77,.14);
  --ease:200ms cubic-bezier(.4,0,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-2);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease);}
a:hover{color:var(--brand-3);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:3px solid rgba(61,220,151,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-dark{background:var(--dark);color:#EDEAF6;}
.section-white{background:#fff;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand);color:#fff;font-size:13px;}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px;flex-wrap:wrap;}
.topbar-inner span{opacity:.92;}
.topbar-right{display:flex;gap:20px;align-items:center;}
.topbar-right a{color:#fff;opacity:.85;}
.topbar-right a:hover{color:var(--lime);opacity:1;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease),height var(--ease);}
.site-header.scrolled{box-shadow:0 6px 22px rgba(43,27,77,.10);}
.header-inner{display:flex;align-items:center;gap:24px;min-height:76px;transition:min-height var(--ease);}
.site-header.scrolled .header-inner{min-height:64px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--brand);flex:0 0 auto;}
.brand:hover{color:var(--brand-2);}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;flex:0 0 auto;box-shadow:0 6px 16px rgba(43,27,77,.22);}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text b{font-size:16.5px;font-weight:800;letter-spacing:-.01em;}
.brand-text small{font-size:11.5px;color:var(--weak);letter-spacing:.06em;font-weight:500;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-link{position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--muted);border-radius:10px;white-space:nowrap;font-weight:500;}
.nav-link::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-3);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.nav-link:hover{color:var(--brand-2);background:rgba(43,27,77,.05);}
.nav-link:active{background:rgba(43,27,77,.10);}
.nav-link.active{color:var(--brand);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.nav-item{position:relative;}
.mega-panel{position:absolute;top:calc(100% + 12px);right:0;width:860px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:0 24px 60px rgba(43,27,77,.18);padding:24px;display:grid;grid-template-columns:1fr 1fr 1.1fr 1.2fr;gap:22px;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega:focus-within .mega-panel,.nav-item.has-mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:13px;font-weight:700;color:var(--brand);margin-bottom:10px;letter-spacing:.04em;}
.mega-link{display:block;font-size:14px;color:var(--muted);padding:6px 8px;margin-left:-8px;border-radius:8px;}
.mega-link:hover{color:var(--brand-2);background:rgba(109,74,199,.08);}
.mega-post{display:block;padding:10px 12px;border-radius:10px;border:1px solid var(--line);margin-bottom:8px;}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5;}
.mega-post span{font-size:12px;color:var(--weak);}
.mega-post:hover{border-color:var(--brand-3);background:rgba(109,74,199,.05);}
.mega-post:hover b{color:var(--brand-2);}
.mega-card{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);display:flex;flex-direction:column;}
.mega-card img{aspect-ratio:16/9;object-fit:cover;width:100%;}
.mega-card div{padding:14px;}
.mega-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:10px;}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--r-btn);font-weight:600;font-size:15.5px;line-height:1.2;transition:all var(--ease);border:1.5px solid transparent;text-align:center;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(43,27,77,.22);}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:transparent;color:var(--brand);border-color:rgba(43,27,77,.55);}
.btn-ghost:hover{background:rgba(43,27,77,.07);color:var(--brand-2);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:rgba(43,27,77,.12);}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 10px 24px rgba(0,0,0,.18);}
.btn-light:hover{color:var(--brand-2);transform:translateY(-2px);}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-btn-sm);}
.btn-block{width:100%;}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;filter:none;}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.4;}
.badge-brand{background:rgba(109,74,199,.12);color:var(--brand-2);}
.badge-time{background:var(--orange);color:#fff;}
.badge-verify{background:transparent;border:1px solid rgba(43,27,77,.35);color:var(--brand);}
.badge-lime{background:rgba(61,220,151,.16);color:#1E8A5C;}
.badge-seal{position:relative;background:transparent;border:1.5px solid var(--lime);color:#1E8A5C;border-radius:8px;padding:5px 10px;}
.badge-seal::after{content:"";position:absolute;right:-4px;bottom:-4px;width:8px;height:8px;border-radius:2px;background:var(--lime);}

/* ---------- Banner ---------- */
.page-banner{position:relative;padding:72px 0 60px;color:#fff;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;min-height:300px;display:flex;align-items:center;}
.page-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(25,18,39,.86) 0%,rgba(43,27,77,.74) 55%,rgba(74,46,133,.62) 100%);}
.page-banner .container{position:relative;z-index:1;}
.breadcrumb{font-size:14px;color:rgba(255,255,255,.78);display:flex;gap:8px;align-items:center;flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.9);}
.breadcrumb a:hover{color:var(--lime);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:rgba(255,255,255,.62);}
.page-banner h1{font-size:clamp(30px,4vw,52px);font-weight:800;letter-spacing:-.01em;line-height:1.28;max-width:900px;}
.page-banner h1 em{font-style:normal;color:var(--lime);}
.banner-lead{margin-top:18px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.86);max-width:760px;}
.banner-meta{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap;}

/* ---------- 锚点胶囊 ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:64px;z-index:40;}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:thin;}
.anchor-scroll::-webkit-scrollbar{height:4px;}
.anchor-scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
.chip{flex:0 0 auto;padding:8px 16px;border-radius:999px;border:1px solid var(--line);font-size:14px;color:var(--muted);background:#fff;font-weight:500;}
.chip:hover{border-color:var(--brand-3);color:var(--brand-2);background:rgba(109,74,199,.06);}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;}

/* ---------- 标题组 ---------- */
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head .eyebrow{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-3);margin-bottom:12px;}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:800;letter-spacing:-.01em;line-height:1.4;}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16.5px;}
.section-dark .sec-head h2{color:#fff;}
.section-dark .sec-head p{color:#B9B4CC;}
.section-dark .sec-head .eyebrow{color:var(--lime);}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 280ms cubic-bezier(.4,0,.2,1);}
.split-media:hover img{transform:scale(1.04);}
.split-media .media-tag{position:absolute;left:16px;bottom:16px;background:rgba(25,18,39,.78);color:#fff;font-size:13px;padding:6px 14px;border-radius:999px;backdrop-filter:blur(2px);}
.split-body h2{font-size:clamp(23px,2.4vw,30px);font-weight:800;line-height:1.42;letter-spacing:-.01em;margin-bottom:16px;}
.split-body p{color:var(--muted);margin-bottom:16px;}
.check-list{display:grid;gap:12px;margin:22px 0 26px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
.check-list li i{flex:0 0 auto;width:22px;height:22px;border-radius:8px;background:rgba(61,220,151,.18);display:flex;align-items:center;justify-content:center;margin-top:4px;}
.check-list li i svg{width:13px;height:13px;}
.check-list li span b{font-weight:700;}
.check-list li span em{font-style:normal;display:block;font-size:14px;color:var(--weak);line-height:1.75;margin-top:2px;}

/* ---------- 四步流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;position:relative;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(109,74,199,.4);}
.step-num{font-size:34px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px rgba(109,74,199,.55);line-height:1;margin-bottom:14px;font-variant-numeric:tabular-nums;}
.step h3{font-size:18.5px;font-weight:700;margin-bottom:10px;}
.step p{font-size:15px;color:var(--muted);}
.step::after{content:"";position:absolute;right:-14px;top:50%;width:14px;height:2px;background:var(--line);}
.step:last-child::after{display:none;}
.step .step-flag{position:absolute;top:-11px;right:16px;font-size:12px;font-weight:700;color:#1E8A5C;background:rgba(61,220,151,.18);border-radius:999px;padding:3px 10px;}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.12);border-radius:var(--r-dark);overflow:hidden;border:1px solid rgba(255,255,255,.14);}
.stat{background:var(--dark);padding:30px 24px;}
.stat b{display:block;font-size:26px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.stat b i{font-style:normal;font-size:15px;color:var(--lime);margin-left:4px;font-weight:600;}
.stat span{display:block;font-size:13px;color:#B9B4CC;margin-top:8px;}

/* ---------- 终端卡片 ---------- */
.device-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px;}
.device-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;transition:transform var(--ease),box-shadow var(--ease);}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.device-card.main{border-color:rgba(109,74,199,.4);box-shadow:var(--shadow);}
.device-icon{width:44px;height:44px;border-radius:14px;background:rgba(109,74,199,.12);display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.device-icon svg{width:22px;height:22px;}
.device-card h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.device-card p{font-size:15px;color:var(--muted);}
.device-card ul{margin-top:16px;display:grid;gap:8px;}
.device-card ul li{font-size:14px;color:var(--muted);padding-left:16px;position:relative;}
.device-card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--lime);}

/* ---------- 相关分类卡 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease);}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.related-card .thumb{position:relative;overflow:hidden;}
.related-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 280ms cubic-bezier(.4,0,.2,1);}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .thumb .badge{position:absolute;left:12px;bottom:12px;background:#fff;color:var(--brand-2);box-shadow:0 4px 14px rgba(43,27,77,.16);}
.related-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.related-body h3{font-size:17.5px;font-weight:700;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card:hover h3{color:var(--brand-2);}
.related-body p{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-foot{margin-top:auto;padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--weak);}
.related-foot .arrow{color:var(--brand-3);font-weight:700;transition:transform var(--ease);}
.related-card:hover .related-foot .arrow{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);}
.faq-item.open{border-color:rgba(109,74,199,.45);box-shadow:var(--shadow);}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;text-align:left;padding:20px 22px;font-size:16.5px;font-weight:700;color:var(--text);}
.faq-q:hover{color:var(--brand-2);}
.faq-sign{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1.5px solid rgba(43,27,77,.3);position:relative;transition:transform var(--ease),border-color var(--ease),background-color var(--ease);}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;transform:translate(-50%,-50%);}
.faq-sign::before{width:12px;height:2px;}
.faq-sign::after{width:2px;height:12px;transition:transform var(--ease),opacity var(--ease);}
.faq-item.open .faq-sign{transform:rotate(180deg);border-color:var(--brand-3);background:rgba(109,74,199,.1);}
.faq-item.open .faq-sign::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.4,0,.2,1);}
.faq-a p{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--muted);}

/* ---------- 咨询 CTA ---------- */
.consult{background:var(--dark);color:#EDEAF6;position:relative;overflow:hidden;}
.consult::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;opacity:.55;}
.consult .container{position:relative;z-index:1;}
.consult-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:48px;align-items:start;}
.consult-info h2{font-size:clamp(24px,2.6vw,32px);font-weight:800;color:#fff;line-height:1.4;margin-bottom:16px;}
.consult-info p{color:#B9B4CC;margin-bottom:20px;}
.consult-points{display:grid;gap:14px;margin-bottom:26px;}
.consult-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#DCD8EA;}
.consult-points li i{flex:0 0 auto;width:22px;height:22px;border-radius:8px;background:rgba(61,220,151,.2);display:flex;align-items:center;justify-content:center;margin-top:3px;}
.consult-points li i svg{width:13px;height:13px;}
.consult-note{font-size:13.5px;color:#8E8AA3;border-left:2px solid rgba(61,220,151,.6);padding-left:14px;line-height:1.85;}
.form-card{background:#fff;border-radius:var(--r-dark);padding:28px;box-shadow:0 20px 50px rgba(0,0,0,.28);color:var(--text);}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px;}
.form-card .form-sub{font-size:14px;color:var(--weak);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px;font-weight:600;}
.field input,.field select,.field textarea{width:100%;height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#FCFBFE;transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);}
.field textarea{height:108px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-3);background:#fff;box-shadow:0 0 0 3px rgba(43,27,77,.12);}
.field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(109,74,199,.4);}
.field.error input,.field.error select,.field.error textarea{border-color:var(--err);background:#FFF9F9;}
.err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.error .err-msg{display:block;}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:6px 0 18px;}
.agree input{width:17px;height:17px;margin-top:4px;flex:0 0 auto;accent-color:var(--brand-3);}
.form-status{display:none;margin-bottom:16px;padding:12px 16px;border-radius:12px;font-size:14px;}
.form-status.ok{display:block;background:rgba(47,163,107,.12);color:#1E7A50;border:1px solid rgba(47,163,107,.35);}
.form-status.bad{display:block;background:rgba(229,72,77,.1);color:#B3282D;border:1px solid rgba(229,72,77,.3);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B9B4CC;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-brand b{display:block;color:#fff;font-size:18px;font-weight:800;margin-bottom:14px;letter-spacing:-.01em;}
.footer-brand p{line-height:1.9;color:#B9B4CC;}
.footer-title{font-size:16px;color:#fff;font-weight:700;margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:#B9B4CC;}
.footer-links a:hover{color:var(--lime);}
.footer-sub{display:flex;gap:8px;margin-top:14px;}
.footer-sub input{flex:1;min-width:0;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;padding:0 12px;font-size:14px;}
.footer-sub input::placeholder{color:#8E8AA3;}
.footer-sub input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(61,220,151,.22);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8E8AA3;}

/* ---------- 回到顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;background:var(--brand-2);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px rgba(43,27,77,.3);opacity:0;visibility:hidden;transform:translateY(10px);transition:all var(--ease);z-index:70;}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-3);transform:translateY(-3px);}
.to-top svg{width:18px;height:18px;}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(25,18,39,.5);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:80;}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;background:#fff;z-index:90;transform:translateX(100%);transition:transform 260ms cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-head b{font-size:16px;color:var(--brand);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:18px;color:var(--muted);line-height:1;}
.drawer-body{padding:12px 20px 20px;overflow-y:auto;flex:1;display:grid;gap:4px;align-content:start;}
.drawer-body a{display:block;padding:13px 8px;font-size:15.5px;color:var(--muted);border-bottom:1px solid var(--line);}
.drawer-body a:hover{color:var(--brand-2);}
.drawer-body a.active{color:var(--brand);font-weight:700;}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);display:grid;gap:10px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .mega-panel{width:680px;grid-template-columns:1fr 1fr;gap:18px;}
  .mega-card{grid-column:1 / -1;}
  .split{gap:36px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .section{padding:64px 0;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split-media{order:-1;}
  .steps{grid-template-columns:1fr 1fr;}
  .step::after{display:none;}
  .stats{grid-template-columns:1fr 1fr;}
  .device-grid{grid-template-columns:1fr 1fr;}
  .device-card.main{grid-column:1 / -1;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .consult-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .anchor-bar{position:static;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 16px;}
  .section{padding:52px 0;}
  .section-sm{padding:44px 0;}
  .page-banner{padding:52px 0 44px;min-height:0;}
  .page-banner h1{font-size:28px;}
  .banner-lead{font-size:15.5px;}
  .sec-head{margin-bottom:32px;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat{padding:22px 18px;}
  .stat b{font-size:22px;}
  .related-grid,.device-grid{grid-template-columns:1fr;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:575px){
  .steps{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .btn{width:100%;}
  .btn-inline{width:auto;}
  .brand-text b{font-size:15px;}
  .brand-text small{font-size:10.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .step:hover,.device-card:hover,.related-card:hover,.btn:hover{transform:none;}
  .split-media:hover img,.related-card:hover .thumb img{transform:none;}
}

/* roulang page: category2 */
:root{
  --primary:#2B1B4D;
  --primary-2:#4A2E85;
  --primary-3:#6D4AC7;
  --accent:#3DDC97;
  --warm:#FF7A45;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --dark:#191227;
  --text:#1C1730;
  --text-2:#5A5570;
  --text-3:#8E8AA3;
  --border:#E8E4F2;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-dark:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-btn-2:10px;
  --sh:0 8px 24px rgba(43,27,77,.08);
  --sh-hover:0 14px 34px rgba(43,27,77,.14);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(61,220,151,.55);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:#fff;font-size:13px;line-height:1.5;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;}
.topbar-left{display:flex;align-items:center;gap:10px;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(61,220,151,.18);flex:none;}
.topbar-right{color:#B9B4CC;}
.topbar-right a{color:#B9B4CC;border-bottom:1px dashed rgba(185,180,204,.5);}
.topbar-right a:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:0 10px 30px rgba(43,27,77,.10);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:78px;transition:height .2s var(--ease);}
.site-header.scrolled .nav-inner{height:66px;}
.logo{display:flex;align-items:center;gap:11px;flex:none;}
.logo-mark{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;flex:none;
  box-shadow:0 6px 16px rgba(43,27,77,.22);
}
.logo-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:block;line-height:1.16;}
.logo-text b{display:block;font-size:15.5px;font-weight:800;color:var(--primary);letter-spacing:.02em;}
.logo-text span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.12em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:#3B3556;transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link:hover{background:rgba(43,27,77,.07);color:var(--primary);}
.nav-link:active{background:rgba(43,27,77,.13);}
.nav-link.active{color:var(--primary);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:var(--primary);
}
.nav-item{position:relative;}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:880px;max-width:calc(100vw - 48px);
  background:#fff;border-radius:16px;padding:24px;border:1px solid var(--border);
  box-shadow:0 28px 70px rgba(43,27,77,.20);
  display:grid;grid-template-columns:1fr 1fr 1.15fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
  z-index:80;
}
.nav-item.has-mega:hover .mega-panel,
.nav-item.has-mega:focus-within .mega-panel,
.nav-item.has-mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.06em;margin-bottom:10px;}
.mega-link{display:block;padding:7px 9px;border-radius:9px;font-size:14.5px;color:#403A5C;transition:background .18s var(--ease),color .18s var(--ease);}
.mega-link:hover{background:rgba(43,27,77,.07);color:var(--primary);}
.mega-post{display:block;padding:8px 9px;border-radius:10px;transition:background .18s var(--ease);}
.mega-post b{display:block;font-size:14px;font-weight:600;color:#2C2647;line-height:1.6;}
.mega-post span{font-size:12.5px;color:var(--text-3);}
.mega-post:hover{background:rgba(61,220,151,.10);}
.mega-post:hover b{color:var(--primary);}
.mega-card{background:var(--bg);border:1px solid var(--border);border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:10px;}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;}
.mega-card p{font-size:13.5px;color:var(--text-2);line-height:1.7;}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:12px;
  align-items:center;justify-content:center;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease);
}
.burger:hover{background:rgba(43,27,77,.06);}
.burger:active{background:rgba(43,27,77,.12);}
.burger span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;width:84%;max-width:360px;height:100%;
  background:#fff;z-index:120;box-shadow:-18px 0 50px rgba(43,27,77,.22);
  transform:translateX(102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-head b{font-size:15px;color:var(--primary);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:18px;color:var(--text-2);}
.drawer-close:hover{background:rgba(43,27,77,.06);}
.drawer-nav{flex:1;overflow-y:auto;}
.drawer-nav a{display:block;padding:13px 12px;border-radius:11px;font-size:15.5px;color:#34304E;border-bottom:1px solid var(--border);}
.drawer-nav a:hover{background:rgba(43,27,77,.06);color:var(--primary);}
.drawer-nav a.active{color:var(--primary);font-weight:600;background:rgba(43,27,77,.06);}
.drawer-sub{padding:12px 4px 0;}
.drawer-sub .mega-title{margin-bottom:6px;}
.drawer-sub a{display:block;padding:9px 10px;border-radius:9px;font-size:14px;color:var(--text-2);border:0;}
.drawer-sub a:hover{background:rgba(61,220,151,.10);color:var(--primary);}
.drawer-cta{margin-top:14px;}
.scrim{position:fixed;inset:0;background:rgba(25,18,39,.5);z-index:110;opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;}
.scrim.open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-weight:600;font-size:15.5px;
  border:1.5px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),filter .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 22px rgba(43,27,77,.24);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 32px rgba(43,27,77,.30);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:transparent;border-color:rgba(43,27,77,.35);color:var(--primary);}
.btn-ghost:hover{background:rgba(43,27,77,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);background:rgba(43,27,77,.14);}
.btn-light{background:#fff;color:var(--primary);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(0,0,0,.22);}
.btn-light:active{transform:translateY(0);}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.62);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:var(--r-btn-2);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;filter:none;box-shadow:none;}
.link-more{color:var(--primary);font-weight:600;font-size:14.5px;border-bottom:1.5px solid rgba(43,27,77,.28);padding-bottom:1px;transition:border-color .2s var(--ease),color .2s var(--ease);}
.link-more:hover{border-color:var(--primary);color:var(--primary-2);}

/* ---------- 徽章与标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.4;}
.badge-cat{background:rgba(43,27,77,.12);color:var(--primary);}
.badge-warm{background:var(--warm);color:#fff;}
.badge-line{background:transparent;border:1.2px solid rgba(43,27,77,.28);color:var(--primary);}
.badge-neon{background:rgba(61,220,151,.16);color:#1D7A55;}
.seal{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:6px;
  border:1px solid rgba(255,255,255,.5);color:#fff;font-size:12.5px;letter-spacing:.06em;
  background:rgba(25,18,39,.34);
}
.seal::before{content:"";width:6px;height:6px;background:var(--accent);border-radius:1px;}

/* ---------- 分类页 Hero ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(115deg,rgba(25,18,39,.82),rgba(43,27,77,.62) 55%,rgba(74,46,133,.52)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.35;
}
.hero-inner{position:relative;z-index:2;padding:34px 0 46px;min-height:320px;display:flex;flex-direction:column;justify-content:center;gap:18px;}
.crumb{display:flex;gap:8px;align-items:center;font-size:14px;color:rgba(255,255,255,.72);overflow-x:auto;white-space:nowrap;padding-bottom:2px;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:rgba(255,255,255,.42);}
.crumb .cur{color:#fff;font-weight:500;}
.page-hero h1{font-size:clamp(28px,4vw,44px);font-weight:800;color:#fff;max-width:900px;}
.hero-sub{max-width:760px;font-size:16.5px;color:rgba(255,255,255,.9);line-height:1.9;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--border);}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:thin;}
.anchor-scroll a{
  flex:none;padding:9px 16px;border-radius:999px;font-size:14px;color:#423C60;
  background:var(--bg);border:1px solid var(--border);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.anchor-scroll a:hover{background:rgba(43,27,77,.08);color:var(--primary);border-color:rgba(43,27,77,.22);}
.anchor-scroll a.on{background:var(--primary);color:#fff;border-color:var(--primary);}

/* ---------- 通用板块 ---------- */
.section{padding:78px 0;}
.section.tight{padding:56px 0;}
.section-dark{background:var(--dark);color:#fff;}
.sec-head{max-width:820px;margin-bottom:38px;}
.sec-head .badge{margin-bottom:14px;}
.sec-head h2{font-size:clamp(24px,3vw,32px);color:var(--text);}
.section-dark .sec-head h2{color:#fff;}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16.5px;}
.section-dark .sec-head p{color:#C9C4DC;}

/* ---------- 错位卡片墙 ---------- */
.offset-wall{display:grid;grid-template-columns:repeat(12,1fr);gap:26px;row-gap:34px;}
.wall-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(43,27,77,.18);}
.wall-card .thumb{position:relative;overflow:hidden;}
.wall-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.wall-card:hover .thumb img{transform:scale(1.04);}
.wall-card .thumb .badge{position:absolute;left:14px;bottom:14px;}
.wall-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.wall-body h3{font-size:20px;color:var(--text);}
.wall-card:hover .wall-body h3{color:var(--primary-2);}
.wall-body p{font-size:15.5px;color:var(--text-2);line-height:1.85;}
.plain-list{display:flex;flex-direction:column;gap:9px;margin-top:2px;}
.plain-list li{position:relative;padding-left:22px;font-size:15px;color:#403A5C;line-height:1.8;}
.plain-list li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;
  background:rgba(61,220,151,.9);box-shadow:0 0 0 4px rgba(61,220,151,.16);
}
.wall-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--text-3);}
.wall-a{grid-column:1/8;}
.wall-b{grid-column:8/13;margin-top:44px;}
.wall-c{grid-column:1/6;}
.wall-d{grid-column:6/13;}
.wall-e{grid-column:1/6;}
.wall-aside{
  grid-column:6/13;align-self:center;background:linear-gradient(160deg,#FFFFFF,#F1EDFB);
  border:1px solid var(--border);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--sh);display:flex;flex-direction:column;gap:14px;
}
.wall-aside h3{font-size:19px;color:var(--primary);}
.wall-aside p{font-size:15px;color:var(--text-2);}
.wave-deco{height:26px;width:180px;color:var(--primary-3);opacity:.6;}

/* ---------- 图文对照 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.split-media{position:relative;border-radius:var(--r-dark);overflow:hidden;box-shadow:var(--sh-hover);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.split-media .tag-float{
  position:absolute;left:18px;top:18px;background:rgba(25,18,39,.78);color:#fff;
  padding:8px 14px;border-radius:999px;font-size:13px;backdrop-filter:blur(6px);
}
.split-text h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:16px;}
.split-text>p{color:var(--text-2);margin-bottom:22px;}
.check-row{display:flex;flex-direction:column;gap:14px;}
.check-item{display:flex;gap:14px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px;transition:box-shadow .2s var(--ease),transform .2s var(--ease);}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.check-ico{
  width:30px;height:30px;flex:none;border-radius:9px;background:rgba(61,220,151,.16);
  display:flex;align-items:center;justify-content:center;color:#1D7A55;font-weight:700;font-size:15px;
}
.check-item b{display:block;font-size:16px;margin-bottom:4px;}
.check-item span{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ---------- 数据条 ---------- */
.stat-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 0;}
.stat b{display:block;font-size:26px;font-weight:800;color:var(--primary);line-height:1.3;}
.stat span{font-size:13.5px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:box-shadow .2s var(--ease),border-color .2s var(--ease);}
.faq-item:hover{box-shadow:var(--sh);}
.faq-item.open{border-color:rgba(43,27,77,.24);box-shadow:var(--sh);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  padding:20px 22px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  font-size:16.5px;font-weight:600;color:var(--text);line-height:1.7;
}
.faq-q:hover{color:var(--primary);}
.faq-ico{flex:none;width:26px;height:26px;border-radius:8px;background:rgba(43,27,77,.08);position:relative;transition:transform .18s var(--ease),background .18s var(--ease);}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.faq-ico::before{left:7px;right:7px;top:12px;height:2px;}
.faq-ico::after{top:7px;bottom:7px;left:12px;width:2px;transition:opacity .18s var(--ease);}
.faq-item.open .faq-ico{background:rgba(61,220,151,.2);}
.faq-item.open .faq-ico::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ---------- 相关分类推荐 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);display:flex;flex-direction:column;transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:18px;}
.rel-card:hover .rel-body h3{color:var(--primary-2);}
.rel-body p{font-size:14.5px;color:var(--text-2);}
.rel-body .link-more{margin-top:auto;align-self:flex-start;}

/* ---------- CTA + 表单 ---------- */
.cta-band{
  background-image:linear-gradient(120deg,rgba(25,18,39,.9),rgba(43,27,77,.72)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;color:#fff;
}
.cta-inner{display:grid;grid-template-columns:1fr 1.05fr;gap:44px;padding:72px 0;align-items:start;}
.cta-copy h2{font-size:clamp(24px,3vw,32px);color:#fff;margin-bottom:16px;}
.cta-copy p{color:rgba(255,255,255,.86);margin-bottom:22px;}
.cta-facts{display:flex;flex-direction:column;gap:12px;}
.cta-facts li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.9);}
.cta-facts li::before{content:"";flex:none;width:8px;height:8px;margin-top:10px;border-radius:2px;background:var(--accent);}
.form-card{background:#fff;border-radius:18px;padding:28px;box-shadow:0 24px 60px rgba(25,18,39,.35);color:var(--text);}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .hint{font-size:14px;color:var(--text-3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:500;}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;border-radius:12px;border:1px solid var(--border);
  background:#FCFBFE;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-3);background:#fff;box-shadow:0 0 0 3px rgba(43,27,77,.12);
}
.field.error input,.field.error select,.field.error textarea{border-color:var(--err);}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px;}
.field.error .err-msg{display:block;}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.consent input{width:18px;height:18px;margin-top:3px;flex:none;accent-color:var(--primary);}
.form-alert{display:none;margin-top:16px;padding:13px 16px;border-radius:12px;font-size:14.5px;}
.form-alert.ok{display:block;background:rgba(47,163,107,.12);color:#1D7A55;border:1px solid rgba(47,163,107,.3);}
.form-alert.bad{display:block;background:rgba(229,72,77,.1);color:#B3272B;border:1px solid rgba(229,72,77,.3);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#B9B4CC;padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:34px;padding-bottom:44px;}
.footer-brand b{display:block;font-size:17px;color:#fff;margin-bottom:12px;letter-spacing:.02em;}
.footer-brand p{line-height:1.9;color:#B9B4CC;}
.footer-title{font-size:16px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{color:#B9B4CC;transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-links a:hover{color:var(--accent);transform:translateX(3px);}
.footer-sub{display:flex;gap:10px;margin-top:14px;}
.footer-sub input{
  flex:1;min-height:44px;padding:10px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;
}
.footer-sub input::placeholder{color:#8E8AA3;}
.footer-sub input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(61,220,151,.2);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8E8AA3;
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--primary);color:#fff;border:0;cursor:pointer;z-index:90;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 12px 28px rgba(43,27,77,.32);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s,background .2s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--primary-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .mega-panel{width:720px;grid-template-columns:1fr 1fr 1fr;}
  .mega-col-latest{display:none;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .burger{display:inline-flex;}
  .container{padding:0 20px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .cta-inner{grid-template-columns:1fr;padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .section{padding:60px 0;}
  .offset-wall{gap:20px;row-gap:24px;}
  .wall-a,.wall-b,.wall-c,.wall-d,.wall-e,.wall-aside{grid-column:1/13;margin-top:0;}
  .stat-grid{grid-template-columns:1fr 1fr;padding:28px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .hero-inner{min-height:250px;padding:26px 0 34px;}
  .page-hero h1{font-size:27px;}
  .hero-sub{font-size:15.5px;}
  .section{padding:48px 0;}
  .section.tight{padding:40px 0;}
  .rel-grid{grid-template-columns:1fr;}
  .wall-body{padding:18px;}
  .form-card{padding:22px;}
  .btn{width:100%;}
  .anchor-scroll a{font-size:13.5px;}
}
@media (max-width:575px){
  .container{padding:0 16px;}
  .topbar .container{flex-direction:column;align-items:flex-start;gap:2px;}
  .topbar-right{display:none;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-sub{flex-direction:column;}
  .to-top{right:14px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .wall-card:hover,.rel-card:hover,.btn:hover{transform:none!important;}
}

/* roulang page: category3 */
:root{
  --ink:#2B1B4D;
  --ink-2:#4A2E85;
  --ink-3:#6D4AC7;
  --mint:#3DDC97;
  --flame:#FF7A45;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --dark:#191227;
  --text:#1C1730;
  --muted:#5A5570;
  --weak:#8E8AA3;
  --line:#E8E4F2;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-card-dark:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-btn-sm:10px;
  --sh:0 8px 24px rgba(43,27,77,.08);
  --sh-hover:0 14px 34px rgba(43,27,77,.14);
  --sh-lg:0 24px 60px rgba(43,27,77,.18);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-3);text-decoration:none;transition:color 200ms var(--ease);}
a:hover{color:var(--ink);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(61,220,151,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-dark{background:var(--dark);color:#EDE9F7;}
.section-dark .section-sub,.section-dark p{color:#B9B4CC;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--ink-3);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--mint);border-radius:2px;}
h2{font-size:clamp(24px,2.6vw,33px);margin-bottom:16px;}
h3{font-size:19px;margin-bottom:10px;}
.section-sub{color:var(--muted);font-size:16px;max-width:680px;margin:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-weight:600;font-size:16px;line-height:1.2;cursor:pointer;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),filter 200ms var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(43,27,77,.24);}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 34px rgba(43,27,77,.3);}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{background:transparent;border-color:var(--ink-3);color:var(--ink);}
.btn-ghost:hover{background:rgba(43,27,77,.08);color:var(--ink);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline-light{background:#fff;color:var(--ink);border-color:#fff;}
.btn-outline-light:hover{background:var(--mint);border-color:var(--mint);color:#12261D;transform:translateY(-2px);}
.btn-line-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-line-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{padding:10px 18px;font-size:14.5px;border-radius:var(--r-btn-sm);}
.btn-block{width:100%;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
.link-more{font-weight:600;display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid transparent;}
.link-more:hover{border-bottom-color:var(--ink-3);color:var(--ink);}

/* ---------- topbar + header ---------- */
.topbar{background:var(--ink);color:#fff;font-size:13px;}
.topbar-inner{display:flex;align-items:center;gap:14px;height:38px;}
.topbar-badge{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;
  background:rgba(61,220,151,.16);color:#8CF0C4;font-weight:700;font-size:12px;
  border:1px solid rgba(61,220,151,.35);
}
.topbar-right{margin-left:auto;color:#CFC7E6;}
.site-header{position:sticky;top:0;z-index:80;}
.header-main{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow 200ms var(--ease);}
.site-header.scrolled .header-main{box-shadow:0 8px 26px rgba(43,27,77,.1);}
.header-inner{display:flex;align-items:center;gap:20px;height:78px;transition:height 200ms var(--ease);}
.site-header.scrolled .header-inner{height:66px;}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(43,27,77,.12),rgba(61,220,151,.18));
  color:var(--ink);border:1px solid var(--line);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.logo-text i{font-style:normal;font-size:13px;color:var(--ink-3);font-weight:700;letter-spacing:.08em;}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--muted);white-space:nowrap;
  transition:color 180ms var(--ease),background-color 180ms var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(43,27,77,.05);}
.nav-link.active{color:var(--ink);}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--ink-3);border-radius:2px;
}
.nav-item{position:relative;}
.nav-item.has-mega > .nav-link::before{
  content:"";display:inline-block;width:6px;height:6px;margin-right:6px;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-2px);opacity:.6;
}
.mega-panel{
  position:absolute;top:calc(100% + 16px);right:0;width:860px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-lg);padding:24px;display:grid;
  grid-template-columns:1fr 1fr 1.15fr 1.1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms var(--ease);
  z-index:90;
}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-title{font-size:13px;font-weight:800;color:var(--ink);letter-spacing:.06em;margin-bottom:12px;}
.mega-link{display:block;padding:7px 0;font-size:14.5px;color:var(--muted);font-weight:500;}
.mega-link:hover{color:var(--ink-3);}
.mega-post{display:block;padding:9px 0;border-bottom:1px dashed var(--line);}
.mega-post:last-of-type{border-bottom:0;}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5;}
.mega-post span{font-size:12.5px;color:var(--weak);}
.mega-post:hover b{color:var(--ink-3);}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--bg);}
.mega-card img{aspect-ratio:16/10;object-fit:cover;width:100%;}
.mega-card div{padding:12px 14px 14px;}
.mega-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin-bottom:10px;}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.menu-btn{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.menu-btn span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);border-radius:2px;}
.menu-btn span::before{top:-6px;}
.menu-btn span::after{top:6px;}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:400px;background:#fff;z-index:120;
  transform:translateX(102%);transition:transform 260ms var(--ease);
  box-shadow:-20px 0 60px rgba(25,18,39,.24);display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-head b{font-size:16px;color:var(--ink);}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:18px;line-height:1;color:var(--muted);}
.drawer-body{padding:14px 20px;overflow-y:auto;flex:1;}
.drawer-group-title{font-size:12.5px;font-weight:800;color:var(--weak);letter-spacing:.08em;margin:16px 0 8px;}
.drawer-link{display:block;padding:13px 12px;border-radius:12px;font-size:15.5px;font-weight:600;color:var(--muted);border:1px solid transparent;}
.drawer-link:hover{background:var(--bg);color:var(--ink);}
.drawer-link.active{background:rgba(43,27,77,.07);color:var(--ink);border-color:var(--line);}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line);background:var(--bg);}
.drawer-mask{position:fixed;inset:0;background:rgba(25,18,39,.5);opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms;z-index:110;}
.drawer-mask.open{opacity:1;visibility:visible;}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(135deg,rgba(25,18,39,.82),rgba(43,27,77,.66) 55%,rgba(61,220,151,.28)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;padding-top:38px;padding-bottom:54px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:#B9B4CC;overflow-x:auto;white-space:nowrap;padding-bottom:4px;margin-bottom:22px;}
.breadcrumb a{color:#C9C2E0;}
.breadcrumb a:hover{color:var(--mint);}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .cur{color:#8E8AA3;}
.page-hero .eyebrow{color:#8CF0C4;}
.page-hero h1{font-size:clamp(30px,4vw,50px);margin:14px 0 16px;max-width:880px;}
.page-hero h1 em{font-style:normal;color:var(--mint);}
.page-hero .lead{font-size:17px;color:#CFC7E6;max-width:720px;line-height:1.85;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-meta{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;border-top:1px solid rgba(255,255,255,.14);padding-top:24px;max-width:920px;}
.hero-meta div b{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2;}
.hero-meta div span{font-size:13px;color:#A79FC4;}

/* ---------- anchor pills ---------- */
.pill-bar{position:sticky;top:66px;z-index:60;background:rgba(247,245,251,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.pill-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.pill-scroll::-webkit-scrollbar{display:none;}
.pill{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--muted);transition:all 200ms var(--ease);
}
.pill:hover{color:var(--ink);border-color:var(--ink-3);transform:translateY(-2px);}
.pill.on{background:var(--ink);border-color:var(--ink);color:#fff;}

/* ---------- stairs / timeline ---------- */
.stairs{position:relative;display:grid;gap:26px;}
.stair{
  position:relative;display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:start;
  margin-left:calc(var(--step,0) * 28px);
}
.stair-rail{position:relative;display:flex;flex-direction:column;align-items:center;}
.stair-num{
  width:78px;height:78px;border-radius:20px;display:grid;place-items:center;
  border:2px solid var(--line);background:#fff;font-size:28px;font-weight:800;color:var(--ink-3);
  letter-spacing:-.02em;
}
.stair-line{flex:1;width:2px;min-height:26px;background:linear-gradient(180deg,var(--line),rgba(109,74,199,.4));margin-top:8px;}
.stair-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--sh);transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.stair-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(109,74,199,.35);}
.stair-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px;}
.stair-head h3{margin:0;}
.stair-cond{font-size:13.5px;color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-weight:600;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:700;}
.tag-ink{background:rgba(43,27,77,.1);color:var(--ink);}
.tag-mint{background:rgba(61,220,151,.18);color:#1E7A57;}
.tag-flame{background:var(--flame);color:#fff;}
.tag-line{border:1px solid var(--ink-3);color:var(--ink);background:transparent;}
.benefit-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 20px;margin:16px 0 18px;}
.benefit-list li{display:flex;gap:9px;font-size:15px;color:var(--muted);line-height:1.7;}
.benefit-list li svg{flex:0 0 auto;margin-top:6px;color:var(--ok);}
.stair-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding-top:16px;border-top:1px dashed var(--line);}
.stair-foot .note{font-size:13.5px;color:var(--weak);}
.stair.recommend .stair-card{border-color:var(--mint);box-shadow:0 14px 34px rgba(61,220,151,.18);}
.stair.recommend .stair-card::before{content:"";position:absolute;left:0;top:0;height:100%;width:4px;background:var(--grad);border-radius:16px 0 0 16px;}
.stair.recommend .stair-card{position:relative;overflow:hidden;}

/* ---------- compare section (dark) ---------- */
.compare-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start;}
.compare-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);
  border-radius:var(--r-card-dark);padding:26px;
}
.compare-card.high{border-color:rgba(61,220,151,.5);background:rgba(61,220,151,.08);}
.compare-card h3{color:#fff;font-size:20px;margin-bottom:6px;}
.compare-card .sub{font-size:13.5px;color:#A79FC4;margin-bottom:16px;}
.compare-rows li{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.12);font-size:15px;color:#DDD7EE;}
.compare-rows li:last-child{border-bottom:0;}
.compare-rows svg{flex:0 0 auto;margin-top:5px;}
.ic-yes{color:var(--mint);}
.ic-no{color:#7F7899;}
.ic-mid{color:var(--warn);}
.diff-list{margin-top:34px;display:grid;gap:12px;}
.diff-item{
  display:grid;grid-template-columns:1.1fr .5fr .5fr;gap:16px;align-items:center;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:14px 20px;font-size:15px;
}
.diff-item .name{font-weight:700;color:#fff;}
.diff-item .cell{display:flex;align-items:center;gap:8px;color:#CFC7E6;font-size:14.5px;}
.diff-head{display:grid;grid-template-columns:1.1fr .5fr .5fr;gap:16px;padding:0 20px;font-size:13px;font-weight:800;color:#8E8AA3;letter-spacing:.05em;}

/* ---------- guide / related cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card-link{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.card-link:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.card-media{position:relative;overflow:hidden;background:var(--bg);}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 280ms var(--ease);}
.card-link:hover .card-media img{transform:scale(1.04);}
.card-media .tag{position:absolute;left:14px;bottom:14px;}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;transition:color 200ms var(--ease);}
.card-link:hover .card-body h3{color:var(--ink-3);}
.card-body p{font-size:14.8px;color:var(--muted);line-height:1.8;margin-bottom:16px;}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--weak);border-top:1px solid var(--line);padding-top:14px;}

/* ---------- faq ---------- */
.faq{max-width:860px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow 200ms var(--ease),border-color 200ms var(--ease);}
.faq-item:hover{box-shadow:var(--sh);}
.faq-item.open{border-color:rgba(109,74,199,.4);box-shadow:var(--sh);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--text);
}
.faq-q .ico{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--bg);display:grid;place-items:center;color:var(--ink-3);font-size:18px;font-weight:700;transition:transform 180ms var(--ease);}
.faq-item.open .faq-q .ico{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15px;color:var(--muted);line-height:1.85;}

/* ---------- form / cta ---------- */
.cta-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card-dark);
  box-shadow:var(--sh-lg);padding:34px;display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;
}
.cta-info h2{font-size:clamp(22px,2.3vw,30px);}
.cta-points{margin-top:20px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:15px;color:var(--muted);}
.cta-points svg{flex:0 0 auto;margin-top:6px;color:var(--mint);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:700;color:var(--muted);}
.field input,.field select,.field textarea{
  height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:#fff;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);font-size:15px;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#D6CFE8;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink-3);box-shadow:0 0 0 3px rgba(43,27,77,.12);}
.field .err-msg{font-size:12px;color:var(--err);display:none;}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--err);}
.field.invalid .err-msg{display:block;}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);grid-column:1 / -1;}
.check-row input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--ink-3);}
.form-alert{
  grid-column:1 / -1;display:none;align-items:center;gap:10px;padding:12px 16px;border-radius:12px;
  font-size:14px;font-weight:600;
}
.form-alert.ok{display:flex;background:rgba(47,163,107,.12);color:#1E7A57;border:1px solid rgba(47,163,107,.35);}
.form-alert.bad{display:flex;background:rgba(229,72,77,.1);color:#A8282C;border:1px solid rgba(229,72,77,.3);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#B9B4CC;padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:34px;padding-bottom:44px;}
.footer-brand b{display:block;font-size:18px;color:#fff;margin-bottom:12px;}
.footer-brand p{font-size:14px;line-height:1.9;color:#B9B4CC;margin:0;}
.footer-title{font-size:16px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-links{display:grid;gap:9px;}
.footer-links a{font-size:14px;color:#B9B4CC;}
.footer-links a:hover{color:var(--mint);}
.footer-sub{display:flex;gap:8px;margin-top:14px;}
.footer-sub input{
  flex:1;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);color:#fff;padding:0 12px;font-size:14px;
}
.footer-sub input::placeholder{color:#8E8AA3;}
.footer-sub input:focus{outline:none;border-color:var(--mint);box-shadow:0 0 0 3px rgba(61,220,151,.2);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8E8AA3;
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:grid;place-items:center;z-index:100;
  box-shadow:0 10px 26px rgba(43,27,77,.3);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms,background-color 200ms var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--ink-3);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .mega-panel{width:720px;grid-template-columns:1fr 1fr 1.1fr;}
  .mega-card{display:none;}
  .compare-wrap{grid-template-columns:1fr;}
}
@media (max-width:1080px){
  .main-nav{display:none;}
  .menu-btn{display:inline-flex;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  .cta-panel{grid-template-columns:1fr;padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero-meta{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stair{grid-template-columns:72px 1fr;gap:16px;margin-left:calc(var(--step,0) * 14px);}
  .stair-num{width:62px;height:62px;font-size:22px;border-radius:16px;}
  .benefit-list{grid-template-columns:1fr;}
  .diff-item,.diff-head{grid-template-columns:1fr .6fr .6fr;font-size:14px;padding-left:16px;padding-right:16px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .topbar-inner{height:auto;padding:8px 0;flex-wrap:wrap;gap:6px;font-size:12.5px;}
  .topbar-right{margin-left:0;}
  .hero-actions .btn{width:100%;}
  .grid-3,.grid-2,.form-grid{grid-template-columns:1fr;}
  .stair{margin-left:0;grid-template-columns:1fr;}
  .stair-rail{flex-direction:row;align-items:center;gap:12px;}
  .stair-line{display:none;}
  .page-hero .container{padding-top:26px;padding-bottom:40px;}
  .diff-head{display:none;}
  .diff-item{grid-template-columns:1fr;}
  .diff-item .cell{gap:6px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (max-width:520px){
  h2{font-size:22px;}
  .stair-card{padding:18px;}
  .cta-panel{padding:20px;}
  .logo-text b{font-size:15px;}
  .logo-text i{font-size:12px;}
  .to-top{right:14px;bottom:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --brand:#2B1B4D;
  --brand-2:#4A2E85;
  --brand-3:#6D4AC7;
  --lime:#3DDC97;
  --orange:#FF7A45;
  --bg:#F7F5FB;
  --card:#FFFFFF;
  --ink:#1C1730;
  --text-2:#5A5570;
  --text-3:#8E8AA3;
  --line:#E8E4F2;
  --dark:#191227;
  --ok:#2FA36B;
  --warn:#FFB020;
  --err:#E5484D;
  --grad:linear-gradient(135deg,#2B1B4D 0%,#4A2E85 60%,#3DDC97 145%);
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --sh:0 8px 24px rgba(43,27,77,.08);
  --sh-hover:0 14px 34px rgba(43,27,77,.14);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-3)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.34;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(61,220,151,.5);outline-offset:2px;border-radius:8px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 顶部信息条 & 导航 ============ */
.site-header{position:sticky;top:0;z-index:90}
.topbar{background:var(--brand);color:#fff;font-size:13px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;gap:12px;height:38px;overflow:hidden}
.topbar-badge{flex-shrink:0;background:rgba(61,220,151,.16);color:var(--lime);border:1px solid rgba(61,220,151,.42);border-radius:999px;padding:1px 10px;font-size:12px;line-height:1.7}
.topbar-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:rgba(255,255,255,.86)}
.topbar-right{margin-left:auto;flex-shrink:0;color:rgba(255,255,255,.7)}
.nav-wrap{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .22s var(--ease)}
.site-header.scrolled .nav-wrap{box-shadow:0 10px 30px rgba(43,27,77,.12)}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:76px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:11px;background-image:var(--grad);display:grid;place-items:center;color:#fff;box-shadow:0 6px 16px rgba(43,27,77,.24)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:17px;font-weight:800;color:var(--brand);letter-spacing:-.01em}
.brand-text i{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.16em}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;display:block;padding:10px 12px;font-size:15px;font-weight:500;color:var(--text-2);border-radius:10px;transition:all .2s var(--ease)}
.nav-link:hover{color:var(--brand);background:rgba(43,27,77,.06)}
.nav-link.active{color:var(--brand);font-weight:700}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
.nav-item{position:relative}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:880px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 26px 64px rgba(43,27,77,.2);padding:24px;
  display:grid;grid-template-columns:1fr 1fr 1fr 1.15fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .16s var(--ease),transform .16s var(--ease),visibility .16s;
}
.nav-item.has-mega:hover .mega-panel,.nav-item.has-mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.06em;margin-bottom:10px}
.mega-link{display:block;padding:7px 0;font-size:14.5px;color:var(--text-2)}
.mega-link:hover{color:var(--brand-3);padding-left:4px}
.mega-post{display:block;padding:10px 12px;border-radius:12px;background:#FAF9FE;margin-bottom:8px;transition:all .2s var(--ease)}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:3px}
.mega-post span{font-size:12px;color:var(--text-3)}
.mega-post:hover{background:#F2EEFC;transform:translateY(-2px)}
.mega-post:hover b{color:var(--brand-3)}
.mega-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.mega-card div{padding:12px 14px 14px}
.mega-card p{font-size:13.5px;color:var(--text-2);margin-bottom:10px;line-height:1.7}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:11px;cursor:pointer;padding:0;place-items:center;gap:5px}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand);margin:3px auto;transition:all .2s var(--ease)}
.hamburger:hover{background:rgba(43,27,77,.06)}

/* ============ 移动抽屉 ============ */
.mask{position:fixed;inset:0;background:rgba(25,18,39,.5);opacity:0;visibility:hidden;transition:all .24s var(--ease);z-index:110}
.mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;
  z-index:120;transform:translateX(100%);transition:transform .28s var(--ease);
  overflow-y:auto;padding:20px 20px 28px;box-shadow:-20px 0 50px rgba(43,27,77,.22);
}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.drawer-head b{font-size:16px;color:var(--brand)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;line-height:1;color:var(--text-2)}
.drawer-close:hover{background:rgba(43,27,77,.06)}
.drawer-title{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--text-3);margin:18px 0 8px}
.drawer-nav a{display:block;padding:11px 12px;border-radius:11px;font-size:15px;color:var(--text-2)}
.drawer-nav a:hover,.drawer-nav a.active{background:#F3F0FC;color:var(--brand);font-weight:600}
.drawer-cta{margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;text-align:center;
  transition:all .2s var(--ease);
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 10px 22px rgba(43,27,77,.22)}
.btn-primary:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 32px rgba(43,27,77,.3)}
.btn-primary:active{transform:none;filter:brightness(.96)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(43,27,77,.3);color:var(--brand)}
.btn-ghost:hover{background:rgba(43,27,77,.08);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:none;background:rgba(43,27,77,.14)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{color:var(--brand);transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,0,0,.22)}
.btn-light:active{transform:none}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:11px}
.btn-block{width:100%}

/* ============ 分类 Banner ============ */
.page-banner{
  position:relative;color:#fff;padding:54px 0 52px;
  background-image:linear-gradient(135deg,rgba(25,18,39,.88) 0%,rgba(43,27,77,.74) 62%,rgba(61,220,151,.28) 145%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center center;
}
.page-banner::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);background-size:22px 22px;opacity:.5;pointer-events:none}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:18px;white-space:nowrap;overflow-x:auto;scrollbar-width:none}
.breadcrumb::-webkit-scrollbar{display:none}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb span.sep{color:rgba(255,255,255,.4)}
.breadcrumb span.current{color:rgba(255,255,255,.62)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.5}
.badge-brand{background:rgba(109,74,199,.14);color:var(--brand-3)}
.badge-lime{background:rgba(61,220,151,.16);color:#1F8C5F;border:1px solid rgba(61,220,151,.4)}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.28)}
.banner-tag{margin-bottom:16px;display:inline-flex}
.page-banner h1{font-size:clamp(28px,3.6vw,46px);max-width:900px;color:#fff;letter-spacing:-.015em}
.banner-lead{margin-top:16px;max-width:760px;font-size:16.5px;color:rgba(255,255,255,.86);line-height:1.9}

/* ============ 锚点条 ============ */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);padding:12px 0}
.anchor-scroll{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-pill{
  flex-shrink:0;padding:8px 18px;border-radius:999px;font-size:14px;font-weight:600;
  color:var(--text-2);background:#F4F2FB;border:1px solid transparent;white-space:nowrap;
  transition:all .2s var(--ease);
}
.anchor-pill:hover{color:var(--brand);background:#EDE8FA;border-color:rgba(109,74,199,.3)}
.anchor-pill.active{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(43,27,77,.24)}

/* ============ 板块 ============ */
.section{padding:74px 0}
.section-alt{background:#fff}
.section-dark{background:var(--dark);color:#fff;position:relative;overflow:hidden}
.section-dark::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:56px 56px;pointer-events:none}
.section-dark .container{position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(23px,2.6vw,32px)}
.section-desc{margin-top:14px;color:var(--text-2);font-size:16px}
.section-dark .section-desc,.section-dark .section-title{color:#fff}
.section-dark .section-desc{color:rgba(255,255,255,.74)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--brand-3);margin-bottom:12px}
.section-dark .eyebrow{color:var(--lime)}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--sh-hover)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .28s var(--ease)}
.split-media:hover img{transform:scale(1.04)}
.split-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#fff;background:linear-gradient(180deg,rgba(25,18,39,0),rgba(25,18,39,.82))}
.prose p + p{margin-top:14px}
.prose{color:var(--text-2)}
.check-list{margin-top:24px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;transition:all .2s var(--ease)}
.check-list li:hover{border-color:rgba(109,74,199,.32);box-shadow:var(--sh);transform:translateY(-2px)}
.check-list b{display:block;color:var(--ink);font-size:15.5px;font-weight:700;margin-bottom:2px}
.check-list span{font-size:14.5px;color:var(--text-2)}
.tick{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:rgba(61,220,151,.18);color:#1F8C5F;display:grid;place-items:center;margin-top:3px}

/* ============ 数据条 ============ */
.stat-strip{margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;box-shadow:var(--sh)}
.stat-item{padding:0 6px}
.stat-item b{display:block;font-size:26px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.stat-item span{display:block;margin-top:4px;font-size:13px;color:var(--text-3)}
.stat-item + .stat-item{border-left:1px solid var(--line)}

/* ============ FAQ ============ */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:all .2s var(--ease)}
.faq-item.open{border-color:rgba(109,74,199,.36);box-shadow:var(--sh)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.6;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-3)}
.faq-icon{flex-shrink:0;width:26px;height:26px;border-radius:9px;background:#F2EEFC;color:var(--brand-3);display:grid;place-items:center;font-size:16px;font-weight:700;line-height:1;transition:transform .18s var(--ease),background .18s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(61,220,151,.2);color:#1F8C5F}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.open .faq-a{max-height:560px}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.9}
.faq-a-inner strong{color:var(--ink)}

/* ============ 深色区 · 习惯清单 ============ */
.habit-wrap{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.habit-list{display:grid;gap:14px}
.habit-item{display:flex;gap:16px;align-items:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:18px 20px;transition:all .2s var(--ease)}
.habit-item:hover{background:rgba(255,255,255,.1);border-color:rgba(61,220,151,.5);transform:translateY(-3px)}
.habit-num{flex-shrink:0;width:34px;height:34px;border-radius:11px;border:1.5px solid rgba(61,220,151,.6);color:var(--lime);display:grid;place-items:center;font-weight:800;font-size:15px}
.habit-item b{display:block;font-size:16px;color:#fff;margin-bottom:4px}
.habit-item span{font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.8}
.habit-media{border-radius:18px;overflow:hidden;box-shadow:0 20px 48px rgba(0,0,0,.4)}
.habit-media img{width:100%;aspect-ratio:16/11;object-fit:cover}

/* ============ 流程时间轴 ============ */
.steps{display:grid;gap:0;max-width:860px;margin:0 auto}
.step{display:grid;grid-template-columns:64px 1fr;gap:22px;position:relative;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:31px;top:64px;bottom:0;width:2px;background:linear-gradient(180deg,rgba(109,74,199,.45),rgba(61,220,151,.35))}
.step:last-child::before{display:none}
.step-num{width:64px;height:64px;border-radius:18px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-size:20px;font-weight:800;color:var(--brand);box-shadow:var(--sh);position:relative;z-index:2}
.step-body{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;transition:all .2s var(--ease)}
.step-body:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:rgba(109,74,199,.3)}
.step-body h3{font-size:18px;margin-bottom:8px}
.step-body p{color:var(--text-2);font-size:15px}

/* ============ 相关分类卡 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:all .2s var(--ease)}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(109,74,199,.32)}
.cat-card-media{overflow:hidden;position:relative}
.cat-card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .28s var(--ease)}
.cat-card:hover .cat-card-media img{transform:scale(1.04)}
.cat-card-media .badge{position:absolute;left:14px;bottom:12px;background:rgba(43,27,77,.82);color:#fff;border:1px solid rgba(255,255,255,.24)}
.cat-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.cat-card-body h3{font-size:18px;margin-bottom:8px}
.cat-card-body p{font-size:14.5px;color:var(--text-2);flex:1}
.cat-card-link{margin-top:16px;font-size:14.5px;font-weight:700;color:var(--brand-3);display:inline-flex;align-items:center;gap:6px}
.cat-card:hover .cat-card-link{text-decoration:underline;text-underline-offset:4px}

/* ============ 表单 ============ */
.form-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:48px;align-items:start}
.form-side{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--sh)}
.form-side h3{font-size:19px;margin-bottom:14px}
.form-side ul{display:grid;gap:12px;margin-bottom:22px}
.form-side li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2)}
.dot{flex-shrink:0;width:8px;height:8px;border-radius:50%;background:var(--lime);margin-top:9px}
.form-side .mini-info{font-size:13.5px;color:var(--text-3);border-top:1px dashed var(--line);padding-top:16px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--sh)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;border:1px solid var(--line);border-radius:12px;
  background:#FCFBFF;font-size:15px;transition:all .2s var(--ease);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.75}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#D6CEEE}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-3);background:#fff;box-shadow:0 0 0 3px rgba(109,74,199,.14)}
.field.error input,.field.error select,.field.error textarea{border-color:var(--err);background:#FFF7F7}
.err-text{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.error .err-text{display:block}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2)}
.check-line input{width:18px;height:18px;min-height:18px;margin-top:4px;flex-shrink:0;accent-color:var(--brand-3)}
.form-ok{display:none;background:rgba(47,163,107,.1);border:1px solid rgba(47,163,107,.38);color:#1F6F4A;border-radius:12px;padding:12px 16px;font-size:14px;margin-bottom:18px}
.form-ok.show{display:block}
.submit-row{margin-top:22px}
.form-note{margin-top:12px;font-size:12.5px;color:var(--text-3)}

/* ============ CTA 带 ============ */
.cta-band{background-image:var(--grad);color:#fff;border-radius:20px;padding:38px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);color:#fff}
.cta-band p{margin-top:8px;font-size:15px;color:rgba(255,255,255,.86);max-width:620px}
.cta-band .btn-row{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#B9B4CC;padding:62px 0 26px;font-size:14px;line-height:1.9}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand b{display:block;font-size:18px;color:#fff;margin-bottom:12px}
.footer-brand p{color:#B9B4CC}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links{display:grid;gap:9px}
.footer-links a{color:#B9B4CC}
.footer-links a:hover{color:var(--lime)}
.footer-sub{display:flex;gap:8px;margin-top:14px}
.footer-sub input{flex:1;min-width:0;min-height:42px;padding:9px 12px;border-radius:11px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;font-size:14px}
.footer-sub input::placeholder{color:rgba(255,255,255,.45)}
.footer-sub input:focus{outline:none;border-color:var(--lime);box-shadow:0 0 0 3px rgba(61,220,151,.18)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:#8E8AA3}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--brand);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;
  opacity:0;visibility:hidden;transition:all .22s var(--ease);z-index:95;box-shadow:0 10px 24px rgba(43,27,77,.32);
}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand-2);transform:translateY(-3px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .mega-panel{width:760px;grid-template-columns:1fr 1fr 1.1fr}
  .mega-col-latest{display:none}
  .split{gap:40px}
  .container{padding:0 22px}
}
@media (max-width:991px){
  .main-nav{display:none}
  .hamburger{display:grid}
  .nav-inner{min-height:66px}
  .topbar-text{display:none}
  .split{grid-template-columns:1fr}
  .split-media{order:-1}
  .habit-wrap{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat-strip{grid-template-columns:1fr 1fr;gap:22px 0}
  .stat-item:nth-child(3){border-left:0}
  .stat-item:nth-child(odd){border-left:0}
  .stat-item:nth-child(even){border-left:1px solid var(--line);padding-left:22px}
}
@media (max-width:767px){
  body{font-size:16px}
  .section{padding:52px 0}
  .page-banner{padding:40px 0 38px}
  .page-banner h1{font-size:27px}
  .banner-lead{font-size:15.5px}
  .cat-grid{grid-template-columns:1fr}
  .step{grid-template-columns:52px 1fr;gap:16px}
  .step-num{width:52px;height:52px;border-radius:15px;font-size:18px}
  .step::before{left:25px;top:52px}
  .cta-band{padding:28px 22px}
  .btn{width:100%}
  .cta-band .btn-row{width:100%}
  .btn-sm{width:auto}
  .drawer-cta .btn{width:100%}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .stat-strip{grid-template-columns:1fr;padding:22px 18px}
  .stat-item{border-left:0 !important;padding-left:0 !important;padding-bottom:14px;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0;padding-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .form-card,.form-side{padding:20px}
  .to-top{right:16px;bottom:16px}
  .brand-text b{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}