/* roulang page: index */
:root{
  --c-primary:#2FE0E6;
  --c-primary-soft:rgba(47,224,230,.14);
  --c-secondary:#7B5CFF;
  --c-secondary-soft:rgba(123,92,255,.16);
  --c-gold:#FFB020;
  --c-danger:#FF6B6B;
  --bg-page:#0A0C18;
  --bg-section:#0D1020;
  --bg-glass:rgba(255,255,255,.045);
  --bg-elev:#141A33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --t-main:#E8ECF8;
  --t-sub:#9AA3C4;
  --t-weak:#6E7797;
  --t-on-primary:#06121A;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-soft:0 10px 26px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(47,224,230,.35), 0 14px 34px rgba(47,224,230,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
  --side-w:88px;
  --side-w-open:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--t-main);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(760px 420px at 12% 4%,rgba(123,92,255,.16),transparent 62%),
    radial-gradient(680px 380px at 88% 12%,rgba(47,224,230,.12),transparent 66%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--r-img);border:1px solid var(--line);object-fit:cover;background:var(--bg-elev)}
a{color:var(--t-main);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--c-primary)}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer}
h1,h2,h3{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section-bg{background:var(--bg-section);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ============ 左侧竖向导航 ============ */
.side-nav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--side-w);
  z-index:60;
  display:flex;
  flex-direction:column;
  background:linear-gradient(180deg,#101434 0%,#0A0C18 68%);
  border-right:1px solid var(--line);
  transition:width var(--dur) var(--ease);
  overflow:hidden;
}
.side-nav:hover,.side-nav:focus-within,.side-nav.is-open{width:var(--side-w-open)}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:22px 18px 18px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.brand-mark{
  flex:0 0 44px;
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:14px;
  background:linear-gradient(135deg,rgba(47,224,230,.22),rgba(123,92,255,.28));
  border:1px solid rgba(47,224,230,.42);
  color:var(--c-primary);
  font-weight:700;
  font-size:19px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text{display:flex;flex-direction:column;opacity:0;transform:translateX(-6px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.side-nav:hover .brand-text,.side-nav:focus-within .brand-text,.side-nav.is-open .brand-text{opacity:1;transform:translateX(0)}
.brand-text strong{font-size:15px;font-weight:700;color:var(--t-main);letter-spacing:.4px}
.brand-text small{font-size:12px;color:var(--t-weak);letter-spacing:1px}
.side-links{flex:1;padding:18px 10px;display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  padding:13px 12px;
  border-radius:12px;
  color:var(--t-sub);
  white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.side-link i{flex:0 0 22px;font-size:17px;text-align:center}
.side-link .lbl{font-size:14px;font-weight:600;opacity:0;transform:translateX(-6px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.side-nav:hover .side-link .lbl,.side-nav:focus-within .side-link .lbl,.side-nav.is-open .side-link .lbl{opacity:1;transform:translateX(0)}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--t-main);transform:translateX(2px)}
.side-link.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.side-link.is-active::before{
  content:"";position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:3px;height:26px;border-radius:3px;background:var(--c-primary);
  box-shadow:0 0 12px rgba(47,224,230,.85);
}
.side-foot{padding:14px 10px 22px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.side-toggle{
  display:flex;align-items:center;gap:14px;
  background:transparent;border:1px solid var(--line);color:var(--t-sub);
  padding:11px 12px;border-radius:12px;white-space:nowrap;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.side-toggle i{flex:0 0 22px;text-align:center;font-size:15px}
.side-toggle span{font-size:13px;opacity:0;transition:opacity var(--dur) var(--ease)}
.side-nav:hover .side-toggle span,.side-nav.is-open .side-toggle span{opacity:1}
.side-toggle:hover{border-color:rgba(47,224,230,.5);color:var(--c-primary)}
.side-cta{
  display:flex;align-items:center;gap:14px;
  padding:12px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(47,224,230,.18),rgba(123,92,255,.22));
  border:1px solid rgba(47,224,230,.35);
  color:var(--t-main);white-space:nowrap;
}
.side-cta i{flex:0 0 22px;text-align:center;color:var(--c-primary);font-size:15px}
.side-cta span{font-size:13px;font-weight:600;opacity:0;transition:opacity var(--dur) var(--ease)}
.side-nav:hover .side-cta span,.side-nav.is-open .side-cta span{opacity:1}

/* ============ 内容区 ============ */
.site-body{margin-left:var(--side-w);min-height:100vh;position:relative;z-index:1}

/* ============ 顶栏 ============ */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:18px;
  padding:14px 40px;
  background:rgba(10,12,24,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.menu-btn{
  display:none;
  align-items:center;gap:9px;
  background:var(--bg-elev);border:1px solid var(--line);color:var(--t-main);
  padding:9px 14px;border-radius:var(--r-btn);font-size:14px;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.menu-btn:hover{border-color:rgba(47,224,230,.5);color:var(--c-primary)}
.topbar-brand{display:none;font-weight:700;font-size:15px;letter-spacing:.3px}
.topbar-search{
  flex:1;max-width:420px;
  display:flex;align-items:center;gap:10px;
  background:var(--bg-glass);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  padding:9px 14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.topbar-search:focus-within{border-color:rgba(47,224,230,.55);box-shadow:0 0 0 4px rgba(47,224,230,.10)}
.topbar-search i{color:var(--t-weak);font-size:14px}
.topbar-search input{
  flex:1;background:transparent;border:0;outline:none;color:var(--t-main);font-size:14px;
}
.topbar-search input::placeholder{color:var(--t-weak)}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px);filter:brightness(.96)}
.btn-primary{
  background:linear-gradient(135deg,#2FE0E6,#59c8ff);
  color:var(--t-on-primary);
  box-shadow:0 10px 26px rgba(47,224,230,.24);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 14px 32px rgba(47,224,230,.34);color:var(--t-on-primary)}
.btn-glow{
  background:linear-gradient(135deg,#2FE0E6,#7B5CFF);
  color:#06121A;font-weight:700;
  box-shadow:0 0 0 1px rgba(47,224,230,.4),0 14px 34px rgba(90,120,255,.34);
}
.btn-glow:hover{filter:brightness(1.08);color:#06121A}
.btn-ghost{background:var(--bg-glass);border-color:var(--line-strong);color:var(--t-main)}
.btn-ghost:hover{border-color:rgba(47,224,230,.55);color:var(--c-primary);background:rgba(47,224,230,.06)}
.btn-line{background:transparent;border-color:var(--line-strong);color:var(--t-sub);padding:10px 18px;font-size:14px}
.btn-line:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-block{width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:82vh;
  display:flex;align-items:center;
  padding:72px 0 80px;
  overflow:hidden;
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;z-index:2}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:var(--r-pill);
  background:rgba(47,224,230,.10);
  border:1px solid rgba(47,224,230,.32);
  color:var(--c-primary);
  font-size:13px;font-weight:600;letter-spacing:.6px;
}
.pill i{font-size:12px}
.hero h1{
  margin:22px 0 20px;
  font-size:clamp(28px,3.35vw,44px);
  line-height:1.28;
  letter-spacing:.4px;
}
.hero h1 em{font-style:normal;color:var(--c-primary)}
.hero-sub{font-size:17px;color:var(--t-sub);max-width:560px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px}
.hero-meta li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--t-weak)}
.hero-meta i{color:var(--c-primary);font-size:13px}
.hero-visual{position:relative}
.hero-frame{
  position:relative;
  border-radius:22px;
  padding:12px;
  background:
    linear-gradient(rgba(20,26,51,.75),rgba(20,26,51,.75)) padding-box,
    linear-gradient(135deg,rgba(47,224,230,.6),rgba(123,92,255,.55)) border-box;
  border:1px solid transparent;
  box-shadow:var(--sh-card);
  animation:floaty 7s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hero-frame img{width:100%;aspect-ratio:16/10;border-radius:16px}
.hero-frame-tag{
  position:absolute;left:26px;bottom:26px;
  padding:8px 15px;border-radius:var(--r-pill);
  background:rgba(6,18,26,.78);
  border:1px solid rgba(47,224,230,.4);
  color:var(--c-primary);font-size:13px;font-weight:600;
  backdrop-filter:blur(8px);
}
.corner{position:absolute;width:24px;height:24px;border:2px solid var(--c-primary);opacity:.9}
.corner-tl{top:-1px;left:-1px;border-right:0;border-bottom:0;border-radius:16px 0 0 0}
.corner-tr{top:-1px;right:-1px;border-left:0;border-bottom:0;border-radius:0 16px 0 0}
.corner-bl{bottom:-1px;left:-1px;border-right:0;border-top:0;border-radius:0 0 0 16px}
.corner-br{bottom:-1px;right:-1px;border-left:0;border-top:0;border-radius:0 0 16px 0}
.hero-chip{
  position:absolute;right:-14px;top:-18px;
  display:flex;align-items:center;gap:9px;
  padding:10px 16px;border-radius:var(--r-pill);
  background:var(--bg-elev);
  border:1px solid rgba(123,92,255,.42);
  box-shadow:var(--sh-soft);
  font-size:13px;color:var(--t-sub);
}
.hero-chip b{color:var(--c-gold);font-weight:700}

/* ============ 统计条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.stat{background:var(--bg-section);padding:26px 24px}
.stat b{display:block;font-size:30px;font-weight:700;color:var(--c-primary);line-height:1.2}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--t-sub)}
.stat small{display:block;margin-top:4px;font-size:12.5px;color:var(--t-weak)}

/* ============ 板块标题 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head h2{font-size:clamp(23px,2.2vw,29px);letter-spacing:.3px}
.section-head p{margin-top:10px;color:var(--t-sub);font-size:15px;max-width:640px}
.head-link{color:var(--c-primary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.head-link:hover{gap:12px}
.eyebrow{display:block;font-size:12.5px;letter-spacing:2.4px;color:var(--c-secondary);font-weight:700;margin-bottom:12px;text-transform:uppercase}

/* ============ 流程步骤 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-item{
  position:relative;
  padding:26px 22px;
  border-radius:var(--r-card);
  background:var(--bg-glass);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.flow-item:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.5);box-shadow:var(--sh-glow)}
.flow-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,rgba(47,224,230,.2),rgba(123,92,255,.24));
  border:1px solid rgba(47,224,230,.35);
  color:var(--c-primary);font-weight:700;font-size:15px;
}
.flow-item h3{margin:16px 0 8px;font-size:18px}
.flow-item p{font-size:14.5px;color:var(--t-sub);line-height:1.8}

/* ============ 资讯列表（CMS 区） ============ */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.info-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-glass);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.5);box-shadow:var(--sh-card)}
.info-thumb{position:relative;overflow:hidden}
.info-thumb img{width:100%;aspect-ratio:16/9;border:0;border-radius:0}
.info-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,24,0) 40%,rgba(10,12,24,.7));pointer-events:none}
.info-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  align-self:flex-start;
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:var(--c-primary);
  background:rgba(47,224,230,.09);
  border:1px solid rgba(47,224,230,.34);
}
.badge--violet{color:#B6A6FF;background:rgba(123,92,255,.12);border-color:rgba(123,92,255,.4)}
.info-body h3{
  margin:14px 0 10px;font-size:18px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-body p{
  font-size:14.5px;color:var(--t-sub);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--t-weak)}
.info-foot .go{color:var(--c-primary);font-weight:600}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:64px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  background:var(--bg-glass);
}
.empty-state i{font-size:30px;color:var(--c-secondary)}
.empty-state p{margin:14px 0 18px;color:var(--t-sub);font-size:15px}

/* ============ 权益对比 ============ */
.compare{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-section);
}
.compare-table{width:100%;border-collapse:collapse;margin:0;background:transparent}
.compare-table caption{text-align:left;padding:20px 24px 0;color:var(--t-weak);font-size:13.5px}
.compare-table th,.compare-table td{
  padding:20px 24px;text-align:left;font-size:15px;color:var(--t-sub);
  border-bottom:1px solid var(--line);min-height:56px;
}
.compare-table thead th{background:#111634;color:var(--t-main);font-size:16px;font-weight:700;border-bottom:1px solid var(--line-strong)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table .col-pro{background:rgba(47,224,230,.06)}
.compare-table thead .col-pro{background:rgba(47,224,230,.12)}
.compare-table .row-name{color:var(--t-main);font-weight:600}
.tick{color:var(--c-primary);font-weight:700}
.miss{color:var(--t-weak)}
.pro-tag{
  display:inline-flex;align-items:center;gap:6px;
  margin-left:10px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;color:var(--t-on-primary);
  background:linear-gradient(135deg,#FFB020,#ffd479);
}

/* ============ 等级卡 ============ */
.levels{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
.level-card{
  position:relative;
  padding:26px 22px 24px;
  border-radius:var(--r-card);
  background:var(--bg-glass);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.level-card:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.5);box-shadow:var(--sh-glow)}
.level-card:nth-child(2){margin-top:12px}
.level-card:nth-child(3){margin-top:24px}
.level-card:nth-child(4){margin-top:36px}
.level-card.is-top{border-color:rgba(255,176,32,.55);background:rgba(255,176,32,.05)}
.level-ribbon{
  position:absolute;top:-11px;right:18px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:linear-gradient(135deg,#FFB020,#ffd479);
  color:#3a2400;font-size:12px;font-weight:700;
}
.level-top{display:flex;align-items:center;gap:12px}
.level-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(123,92,255,.26),rgba(47,224,230,.2));
  border:1px solid rgba(123,92,255,.42);
  color:var(--c-primary);font-size:17px;
}
.level-card h3{font-size:19px}
.level-count{margin:14px 0 16px;font-size:13px;color:var(--c-gold);font-weight:600}
.level-list{display:flex;flex-direction:column;gap:9px;margin-bottom:22px}
.level-list li{position:relative;padding-left:16px;font-size:14px;color:var(--t-sub)}
.level-list li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--c-primary)}

/* ============ 专属内容预览 ============ */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.g-card{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  background:var(--bg-glass);
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.g-card:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.5);box-shadow:var(--sh-card)}
.g-thumb{position:relative}
.g-thumb img{width:100%;aspect-ratio:4/3;border:0;border-radius:0}
.g-lock{
  position:absolute;inset:0;
  display:grid;place-items:center;
  background:rgba(10,12,24,.5);
  backdrop-filter:blur(3px);
}
.g-lock i{color:var(--t-main);font-size:20px;opacity:.85}
.g-body{padding:18px 20px 20px}
.g-body h3{font-size:17px;margin-bottom:12px;line-height:1.5}
.g-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--t-weak)}
.g-meta .vip{color:var(--c-gold);font-weight:700}

/* ============ FAQ ============ */
.faq-wrap{max-width:960px;margin:0 auto}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--bg-glass);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.accordion-item.is-active{border-color:rgba(47,224,230,.42);background:rgba(47,224,230,.05)}
.accordion-title{
  display:block;
  padding:20px 60px 20px 24px;
  position:relative;
  color:var(--t-main);
  font-size:17px;font-weight:700;
  background:transparent;border:0;
  transition:color var(--dur) var(--ease);
}
.accordion-title:hover{color:var(--c-primary)}
.accordion-title::before{
  content:"+";
  position:absolute;right:24px;top:50%;
  transform:translateY(-50%);
  font-size:22px;font-weight:400;line-height:1;
  color:var(--t-sub);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg);color:var(--c-primary)}
.accordion-content{
  padding:0 24px 22px;
  border:0;background:transparent;
  color:var(--t-sub);font-size:15.5px;line-height:1.9;
}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:24px;
  padding:60px 48px;
  text-align:center;
  background:
    linear-gradient(rgba(16,20,52,.9),rgba(10,12,24,.94)) padding-box,
    linear-gradient(120deg,rgba(47,224,230,.7),rgba(123,92,255,.65)) border-box;
  border:1px solid transparent;
  box-shadow:var(--sh-card);
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:auto 0 -160px 0;height:280px;
  background:radial-gradient(closest-side,rgba(47,224,230,.22),transparent);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(24px,2.4vw,32px);position:relative}
.cta-band p{position:relative;margin:16px auto 28px;max-width:620px;color:var(--t-sub);font-size:15.5px}
.cta-band .hero-actions{justify-content:center;margin-top:0;position:relative}

/* ============ 页脚 ============ */
.site-footer{background:#080A14;border-top:1px solid var(--line);padding:72px 0 0;position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand strong{font-size:16px}
.footer-col p{font-size:14px;color:var(--t-sub);line-height:1.9}
.footer-col h3{font-size:15px;margin-bottom:18px;color:var(--t-main)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-col a{font-size:14px;color:var(--t-sub)}
.footer-links a:hover,.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:56px;padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--t-weak);
}
.footer-bottom a{color:var(--t-weak)}
.footer-bottom a:hover{color:var(--c-primary)}

/* ============ 移动抽屉 ============ */
.off-canvas-wrapper{background:transparent}
.off-canvas{
  width:290px;
  background:linear-gradient(180deg,#101434,#0A0C18);
  border-right:1px solid var(--line);
}
.drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line)}
.drawer-links{padding:16px 12px;display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  display:flex;align-items:center;gap:12px;
  padding:14px 14px;border-radius:12px;
  color:var(--t-sub);font-size:15px;font-weight:600;
}
.drawer-links a i{font-size:15px;width:20px;text-align:center}
.drawer-links a:hover,.drawer-links a.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer-foot{padding:16px 20px 26px;border-top:1px solid var(--line)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px}
  .topbar{padding:14px 28px}
  .hero-inner{gap:44px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .site-body{margin-left:0}
  .menu-btn{display:inline-flex}
  .topbar-brand{display:block}
  .topbar-search{max-width:none}
  .hero{min-height:560px;padding:56px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual{order:-1}
  .hero-chip{right:10px;top:-14px}
  .flow{grid-template-columns:repeat(2,1fr)}
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .levels{grid-template-columns:repeat(2,1fr)}
  .level-card:nth-child(3),.level-card:nth-child(4){margin-top:0}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section{padding:72px 0}
  .cta-band{padding:48px 28px}
}
@media (max-width:639px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .topbar{padding:12px 16px;gap:12px;flex-wrap:wrap}
  .topbar-search{order:3;flex:1 0 100%}
  .topbar-right .btn{padding:10px 16px;font-size:14px}
  .hero{padding:40px 0 56px}
  .hero h1{font-size:26px}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .flow{grid-template-columns:1fr}
  .info-grid{grid-template-columns:1fr}
  .levels{grid-template-columns:1fr}
  .level-card{margin-top:0 !important}
  .gallery{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td,.compare-table th{display:block;width:100%}
  .compare-table thead{display:none}
  .compare-table caption{padding:18px 20px 0}
  .compare-table tr{border-bottom:1px solid var(--line);padding:6px 0}
  .compare-table tr:last-child{border-bottom:0}
  .compare-table td{padding:10px 20px}
  .compare-table td::before{
    content:attr(data-label);
    display:block;font-size:12.5px;color:var(--t-weak);letter-spacing:.5px;margin-bottom:4px;
  }
  .accordion-title{font-size:15.5px;padding:18px 54px 18px 18px}
  .accordion-title::before{right:18px}
  .accordion-content{padding:0 18px 18px}
  .cta-band{padding:40px 20px;border-radius:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: article */
:root{
  --c-cyan:#2FE0E6;
  --c-purple:#7B5CFF;
  --c-gold:#FFB020;
  --c-danger:#FF6B6B;
  --bg:#0A0C18;
  --bg-2:#0D1020;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --raise:#141A33;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --tx:#E8ECF8;
  --tx-2:#9AA3C4;
  --tx-3:#6E7797;
  --ink:#06121A;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-soft:0 10px 26px rgba(0,0,0,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:88px;
  --nav-w-open:240px;
  --s1:8px;--s2:16px;--s3:24px;--s4:32px;--s6:48px;--s8:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--tx);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 30% 12%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 30% 12%,#000 0%,transparent 78%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(760px 420px at 78% -6%,rgba(123,92,255,.20),transparent 66%),
    radial-gradient(620px 360px at 4% 34%,rgba(47,224,230,.13),transparent 68%);
}
img{max-width:100%;display:block;object-fit:cover;border-radius:14px;border:1px solid var(--line);background:var(--raise)}
a{color:var(--c-cyan);text-decoration:none;transition:color 220ms var(--ease)}
a:hover{color:#7CF3F7}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px}
h1,h2,h3,h4{font-weight:700;line-height:1.32;color:var(--tx);margin:0}
h1{font-size:42px;letter-spacing:.2px}
h2{font-size:28px}
h3{font-size:19px}
p{margin:0 0 var(--s2)}
ul,ol{margin:0 0 var(--s2);padding-left:20px}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px}

/* ============ 侧边竖向导航 ============ */
.side-nav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);z-index:60;
  display:flex;flex-direction:column;padding:18px 10px;
  background:rgba(11,14,28,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-right:1px solid var(--line);
  transition:width 260ms var(--ease);
  overflow:hidden;
}
.side-nav:hover,.side-nav.is-open{width:var(--nav-w-open)}
.brand{display:flex;align-items:center;gap:12px;padding:6px 4px 18px;border-bottom:1px solid var(--line);flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:13px;display:grid;place-items:center;
  font-weight:700;font-size:18px;color:var(--ink);
  background:linear-gradient(135deg,var(--c-cyan),var(--c-purple));
  box-shadow:0 8px 22px rgba(47,224,230,.24);
}
.brand-text{min-width:0;opacity:0;transition:opacity 200ms var(--ease);white-space:nowrap}
.side-nav:hover .brand-text,.side-nav.is-open .brand-text{opacity:1}
.brand-text strong{display:block;font-size:14.5px;line-height:1.4;color:var(--tx)}
.brand-text span{display:block;font-size:12px;color:var(--tx-3);line-height:1.5}
.side-links{display:flex;flex-direction:column;gap:6px;margin-top:18px;flex:1 1 auto}
.side-link{
  position:relative;display:flex;align-items:center;gap:14px;height:48px;padding:0 12px;
  border-radius:12px;color:var(--tx-2);font-size:14px;white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease);
}
.side-link i{width:22px;flex:0 0 22px;text-align:center;font-size:16px}
.side-link .lbl{opacity:0;transition:opacity 200ms var(--ease);overflow:hidden;text-overflow:ellipsis}
.side-nav:hover .side-link .lbl,.side-nav.is-open .side-link .lbl{opacity:1}
.side-link:hover{background:rgba(47,224,230,.08);color:var(--tx)}
.side-link.is-active{background:rgba(47,224,230,.10);color:var(--tx)}
.side-link.is-active::before{
  content:"";position:absolute;left:-10px;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--c-cyan);box-shadow:0 0 14px var(--c-cyan);
}
.side-foot{flex:0 0 auto;margin-top:14px;border-top:1px solid var(--line);padding-top:14px}
.nav-toggle{
  width:100%;height:42px;display:flex;align-items:center;gap:14px;padding:0 12px;
  background:transparent;border:1px solid var(--line);border-radius:12px;color:var(--tx-2);
  cursor:pointer;font-size:13px;transition:all 220ms var(--ease);
}
.nav-toggle i{width:22px;flex:0 0 22px;text-align:center}
.nav-toggle span{opacity:0;transition:opacity 200ms var(--ease);white-space:nowrap}
.side-nav:hover .nav-toggle span,.side-nav.is-open .nav-toggle span{opacity:1}
.nav-toggle:hover{border-color:rgba(47,224,230,.45);color:var(--tx)}
.side-login{
  display:flex;align-items:center;gap:14px;height:44px;padding:0 12px;margin-top:10px;border-radius:12px;
  background:linear-gradient(135deg,rgba(47,224,230,.16),rgba(123,92,255,.18));
  border:1px solid rgba(47,224,230,.35);color:var(--tx);font-size:13.5px;white-space:nowrap;
}
.side-login i{width:22px;flex:0 0 22px;text-align:center;color:var(--c-cyan)}
.side-login span{opacity:0;transition:opacity 200ms var(--ease)}
.side-nav:hover .side-login span,.side-nav.is-open .side-login span{opacity:1}

/* ============ 主区域 ============ */
.app-shell{position:relative;z-index:1;padding-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}

/* 桌面顶栏 */
.page-topbar{
  position:sticky;top:0;z-index:50;
  background:rgba(10,12,24,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{display:flex;align-items:center;gap:var(--s3);min-height:70px;padding:12px 0}
.topbar-crumb{font-size:13px;color:var(--tx-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1 1 auto}
.topbar-crumb a{color:var(--tx-3)}
.topbar-crumb a:hover{color:var(--c-cyan)}
.topbar-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-form{position:relative;display:flex;align-items:center}
.search-form input{
  width:220px;height:42px;padding:0 40px 0 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--tx);font-size:14px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.search-form input::placeholder{color:var(--tx-3)}
.search-form input:focus{outline:none;border-color:var(--c-cyan);box-shadow:0 0 0 4px rgba(47,224,230,.16);background:rgba(255,255,255,.07)}
.search-form button{
  position:absolute;right:6px;width:32px;height:32px;border:0;border-radius:9px;cursor:pointer;
  background:transparent;color:var(--tx-2);transition:color 220ms var(--ease)
}
.search-form button:hover{color:var(--c-cyan)}
.ghost-link{
  height:42px;display:inline-flex;align-items:center;gap:8px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);color:var(--tx-2);font-size:14px;background:transparent;cursor:pointer;
  transition:all 220ms var(--ease)
}
.ghost-link:hover{border-color:rgba(47,224,230,.45);color:var(--tx);transform:translateY(-2px)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform 220ms var(--ease),filter 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease),background 220ms var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--c-cyan),#43B7FF);color:var(--ink);box-shadow:0 12px 30px rgba(47,224,230,.26)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:var(--ink)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--tx)}
.btn-ghost:hover{border-color:var(--c-cyan);color:var(--c-cyan);transform:translateY(-2px)}
.btn-glow{position:relative;background:linear-gradient(135deg,var(--c-cyan),var(--c-purple));color:var(--ink);box-shadow:0 0 0 1px rgba(47,224,230,.4),0 14px 34px rgba(47,224,230,.3)}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-2px);color:var(--ink)}
.btn-gold{background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.5);color:var(--c-gold)}
.btn-gold:hover{background:rgba(255,176,32,.2);transform:translateY(-2px);color:var(--c-gold)}
.btn-block{width:100%}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 徽章与标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.3px;color:var(--c-cyan);
  background:rgba(47,224,230,.09);border:1px solid rgba(47,224,230,.35)
}
.badge-purple{color:#B9A8FF;background:rgba(123,92,255,.12);border-color:rgba(123,92,255,.42)}
.badge-gold{color:var(--c-gold);background:rgba(255,176,32,.10);border-color:rgba(255,176,32,.42)}
.badge-plain{color:var(--tx-2);background:rgba(255,255,255,.05);border-color:var(--line)}

/* ============ 文章头部 ============ */
.article-hero{padding:56px 0 40px;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.article-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(123,92,255,.22),transparent 62%);pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px;list-style:none;padding:0}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--tx-3);opacity:.6}
.crumb a{color:var(--tx-3)}
.crumb a:hover{color:var(--c-cyan)}
.crumb .current{color:var(--tx-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{font-size:40px;max-width:940px;margin:16px 0 20px}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--tx-3);align-items:center}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--c-cyan);font-size:13px}
.meta-avatar{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;
  color:var(--ink);background:linear-gradient(135deg,var(--c-cyan),var(--c-purple));border:1px solid rgba(255,255,255,.18)
}

/* ============ 文章布局 ============ */
.article-wrap{padding:56px 0 var(--s8)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.article-body{
  min-width:0;font-size:16.5px;line-height:1.9;color:#D3DAEC;
  padding:36px 40px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card)
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:26px;margin:44px 0 16px;padding-left:16px;position:relative;color:var(--tx)
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--c-cyan),var(--c-purple))
}
.article-body h3{font-size:19px;margin:32px 0 12px;color:var(--tx)}
.article-body p{margin:0 0 20px}
.article-body a{color:var(--c-cyan);border-bottom:1px solid rgba(47,224,230,.35)}
.article-body a:hover{border-bottom-color:var(--c-cyan)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px}
.article-body li{margin-bottom:10px}
.article-body li::marker{color:var(--c-cyan)}
.article-body img{margin:26px 0;border-radius:14px;border:1px solid var(--line)}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;border-left:3px solid var(--c-cyan);border-radius:0 14px 14px 0;
  background:rgba(47,224,230,.06);color:var(--tx-2)
}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.article-body th,.article-body td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:rgba(255,255,255,.05);color:var(--tx);font-weight:600}
.article-body code{
  padding:2px 7px;border-radius:6px;background:rgba(255,255,255,.07);
  border:1px solid var(--line);font-size:14px;color:#9FF3F6
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.article-body strong{color:var(--tx)}

/* 空态 */
.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--r-card);
  background:var(--glass);border:1px dashed var(--line-strong)
}
.empty-state i{font-size:34px;color:var(--tx-3);display:block;margin-bottom:16px}
.empty-state h3{margin-bottom:10px}
.empty-state p{color:var(--tx-2);margin-bottom:22px}

/* 右侧粘性侧栏 */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  padding:26px 24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(47,224,230,.08),rgba(123,92,255,.10));
  border:1px solid rgba(47,224,230,.30);box-shadow:var(--shadow-card)
}
.aside-card h3{font-size:18px;margin-bottom:8px}
.aside-card .aside-sub{font-size:13px;color:var(--tx-2);margin-bottom:18px}
.aside-list{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:11px}
.aside-list li{display:flex;gap:10px;font-size:14px;color:var(--tx-2);line-height:1.65}
.aside-list i{color:var(--c-cyan);font-size:13px;margin-top:6px}
.aside-note{font-size:12.5px;color:var(--tx-3);margin:14px 0 0;text-align:center}
.aside-quiet{
  padding:22px 24px;border-radius:var(--r-card);background:var(--glass);
  border:1px solid var(--line)
}
.aside-quiet h3{font-size:16px;margin-bottom:14px}
.aside-quiet .quiet-links{display:flex;flex-direction:column;gap:12px;font-size:14px}
.aside-quiet .quiet-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--tx-2)}
.aside-quiet .quiet-links a:hover{color:var(--c-cyan)}
.aside-quiet .quiet-links i{font-size:12px;color:var(--tx-3)}

/* ============ 相关推荐 ============ */
.related{padding:0 0 var(--s8)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:28px;margin-bottom:8px}
.section-head p{color:var(--tx-2);font-size:14.5px;margin:0}
.section-head .more{font-size:14px;color:var(--tx-2);display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.section-head .more:hover{color:var(--c-cyan)}
.reco-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.reco-card{
  display:flex;flex-direction:column;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-soft);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease)
}
.reco-card:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.5);box-shadow:0 22px 46px rgba(0,0,0,.5)}
.reco-thumb{aspect-ratio:16/9;overflow:hidden;border:0;border-radius:0;border-bottom:1px solid var(--line)}
.reco-thumb img{width:100%;height:100%;border:0;border-radius:0}
.reco-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.reco-body h3{font-size:17px;line-height:1.55}
.reco-body p{font-size:14px;color:var(--tx-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.reco-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--tx-3);margin-top:auto;padding-top:6px}
.reco-foot i{color:var(--c-cyan)}

/* ============ 返回条 ============ */
.back-strip{padding:0 0 var(--s8)}
.back-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 32px;border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(47,224,230,.07),rgba(123,92,255,.10));
  border:1px solid var(--line)
}
.back-bar .txt{font-size:15px;color:var(--tx-2)}
.back-bar .txt strong{color:var(--tx);display:block;font-size:16px;margin-bottom:4px}
.back-bar .acts{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:rgba(13,16,32,.75);padding:64px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:12px;font-size:16px}
.footer-brand strong{font-size:15.5px}
.footer-col p{font-size:13.5px;color:var(--tx-3);line-height:1.9;margin:0}
.footer-col h3{font-size:15px;margin-bottom:18px;color:var(--tx)}
.footer-links{display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer-links a{color:var(--tx-2)}
.footer-links a:hover{color:var(--c-cyan)}
.footer-links span{color:var(--tx-3);font-size:13.5px;word-break:break-all}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--tx-3)
}
.footer-bottom a{color:var(--tx-3)}
.footer-bottom a:hover{color:var(--c-cyan)}

/* ============ 移动端顶部导航与抽屉 ============ */
.mobile-topbar{
  display:none;position:sticky;top:0;z-index:70;
  align-items:center;justify-content:space-between;gap:14px;
  padding:12px 16px;background:rgba(10,12,24,.9);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)
}
.mobile-brand{display:flex;align-items:center;gap:10px;min-width:0}
.mobile-brand .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:11px;font-size:15px}
.mobile-brand strong{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--tx)}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--tx);font-size:17px;cursor:pointer;
  transition:all 220ms var(--ease)
}
.burger:hover{border-color:rgba(47,224,230,.5);color:var(--c-cyan)}
.drawer-mask{
  position:fixed;inset:0;z-index:110;background:rgba(4,6,14,.68);
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease)
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:120;width:min(330px,86vw);
  padding:24px 20px;transform:translateX(102%);transition:transform 280ms var(--ease);
  background:rgba(13,16,32,.97);backdrop-filter:blur(18px);
  border-left:1px solid var(--line);display:flex;flex-direction:column;gap:8px;overflow-y:auto
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-head strong{font-size:15px;color:var(--tx)}
.drawer-close{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  background:transparent;color:var(--tx-2);cursor:pointer
}
.drawer-close:hover{color:var(--c-cyan);border-color:rgba(47,224,230,.5)}
.drawer-link{
  display:flex;align-items:center;gap:14px;height:50px;padding:0 14px;border-radius:12px;
  color:var(--tx-2);font-size:15px;border:1px solid transparent
}
.drawer-link i{width:20px;text-align:center;color:var(--tx-3)}
.drawer-link:hover,.drawer-link.is-active{
  background:rgba(47,224,230,.10);border-color:rgba(47,224,230,.28);color:var(--tx)
}
.drawer-link.is-active i{color:var(--c-cyan)}
.drawer-cta{margin-top:18px}

/* ============ 断点 ============ */
@media (max-width:1279px){
  .container{padding:0 24px}
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:36px}
  .article-hero h1{font-size:36px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .app-shell{padding-left:0}
  .page-topbar{display:none}
  .mobile-topbar{display:flex}
  .container{padding:0 20px}
  .article-hero{padding:36px 0 28px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{position:static;order:2}
  .article-body{padding:26px 22px;font-size:16px}
  .reco-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .search-form input{width:100%}
}
@media (max-width:639px){
  h1{font-size:27px}
  h2{font-size:22px}
  .article-hero h1{font-size:27px;margin:14px 0 16px}
  .article-body{padding:22px 18px;font-size:16px;line-height:1.86}
  .article-body h2{font-size:21px;margin:34px 0 14px}
  .article-body h3{font-size:17.5px}
  .reco-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .back-bar{padding:22px;flex-direction:column;align-items:flex-start}
  .back-bar .acts{width:100%}
  .back-bar .acts .btn{width:100%}
  .btn{height:44px;padding:0 18px;font-size:14.5px}
  .topbar-actions{flex-wrap:wrap}
}

/* roulang page: category1 */
:root{
  --c-bg:#0A0C18;
  --c-panel:#0D1020;
  --c-glass:rgba(255,255,255,.045);
  --c-elev:#141A33;
  --c-line:rgba(255,255,255,.08);
  --c-cyan:#2FE0E6;
  --c-cyan-soft:rgba(47,224,230,.08);
  --c-purple:#7B5CFF;
  --c-gold:#FFB020;
  --c-text:#E8ECF8;
  --c-text-2:#9AA3C4;
  --c-text-3:#6E7797;
  --c-danger:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:14px;
  --sh-card:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-hover:0 24px 54px rgba(0,0,0,.55), 0 0 0 1px rgba(47,224,230,.35), inset 0 1px 0 rgba(255,255,255,.08);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --s1:8px; --s2:16px; --s3:24px; --s4:32px; --s5:48px; --s6:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 40% 20%,rgba(0,0,0,.9),transparent 85%);
  -webkit-mask-image:radial-gradient(circle at 40% 20%,rgba(0,0,0,.9),transparent 85%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/><feColorMatrix type='saturate' values='0'/></filter><rect width='140' height='140' filter='url(/%23n)' opacity='0.04'/></svg>");
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--c-cyan);text-decoration:none;transition:color var(--t)}
a:hover{color:#71f1f5}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-cyan);outline-offset:2px}
h1,h2,h3{margin:0;font-weight:700;line-height:1.35;letter-spacing:.2px;color:var(--c-text)}
h1{font-size:clamp(28px,3.4vw,44px)}
h2{font-size:clamp(23px,2.3vw,30px)}
h3{font-size:19px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
input,button,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:rgba(47,224,230,.28)}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 40px;position:relative;z-index:1}

/* ---------- 骨架 ---------- */
.app-shell{display:flex;min-height:100vh;position:relative;z-index:1}
.app-main{flex:1;min-width:0;margin-left:88px;transition:margin-left var(--t)}
body.nav-open .app-main{margin-left:240px}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:88px;z-index:70;
  display:flex;flex-direction:column;gap:var(--s3);
  padding:20px 14px 18px;
  background:linear-gradient(180deg,#0E1122 0%,rgba(10,12,24,.96) 100%);
  border-right:1px solid var(--c-line);
  overflow:hidden;
  transition:width var(--t);
}
body.nav-open .side-nav{width:240px}
.side-brand{display:flex;align-items:center;gap:12px;min-height:44px;padding:0 4px}
.brand-mark{
  flex:0 0 38px;width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  font-weight:700;font-size:17px;color:#06121A;
  background:linear-gradient(135deg,var(--c-cyan),var(--c-purple));
  box-shadow:0 0 18px rgba(47,224,230,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;white-space:nowrap;max-width:0;opacity:0;overflow:hidden;transition:max-width var(--t),opacity var(--t)}
body.nav-open .brand-text{max-width:170px;opacity:1}
.brand-text strong{font-size:14.5px;letter-spacing:.2px}
.brand-text span{font-size:12px;color:var(--c-text-3)}
.side-links{display:flex;flex-direction:column;gap:6px;flex:1;overflow:hidden}
.side-link{
  position:relative;display:flex;align-items:center;gap:14px;
  padding:12px 12px;border-radius:12px;
  color:var(--c-text-2);font-size:14.5px;white-space:nowrap;
  transition:background var(--t),color var(--t),transform var(--t);
}
.side-link i{flex:0 0 20px;text-align:center;font-size:16px;color:var(--c-text-3);transition:color var(--t)}
.side-link .lbl{max-width:0;opacity:0;overflow:hidden;transition:max-width var(--t),opacity var(--t)}
body.nav-open .side-link .lbl{max-width:180px;opacity:1}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--c-text);transform:translateY(-1px)}
.side-link:hover i{color:var(--c-cyan)}
.side-link.is-active{background:var(--c-cyan-soft);color:#fff}
.side-link.is-active i{color:var(--c-cyan)}
.side-link.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:3px;
  background:var(--c-cyan);box-shadow:0 0 12px var(--c-cyan);
}
.side-foot{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--c-line);padding-top:14px}
.collapse-btn{
  display:flex;align-items:center;gap:12px;
  background:transparent;border:1px solid var(--c-line);color:var(--c-text-3);
  border-radius:var(--r-btn);padding:10px 12px;cursor:pointer;white-space:nowrap;
  transition:border-color var(--t),color var(--t);
}
.collapse-btn:hover{border-color:rgba(47,224,230,.4);color:var(--c-text)}
.collapse-btn i{flex:0 0 20px;text-align:center}
.collapse-btn .lbl{max-width:0;opacity:0;overflow:hidden;transition:max-width var(--t),opacity var(--t)}
body.nav-open .collapse-btn .lbl{max-width:140px;opacity:1}
.side-cta{
  display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:var(--r-btn);
  background:linear-gradient(135deg,rgba(47,224,230,.18),rgba(123,92,255,.18));
  border:1px solid rgba(47,224,230,.35);color:var(--c-text);font-size:14px;white-space:nowrap;
}
.side-cta i{flex:0 0 20px;text-align:center;color:var(--c-cyan)}
.side-cta .lbl{max-width:0;opacity:0;overflow:hidden;transition:max-width var(--t),opacity var(--t)}
body.nav-open .side-cta .lbl{max-width:150px;opacity:1}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:var(--s3);
  padding:14px 40px;
  background:rgba(10,12,24,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.hamburger{display:none;background:transparent;border:1px solid var(--c-line);color:var(--c-text);border-radius:10px;width:42px;height:42px;cursor:pointer;transition:border-color var(--t)}
.hamburger:hover{border-color:rgba(47,224,230,.5)}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3)}
.crumbs a{color:var(--c-text-3)}
.crumbs a:hover{color:var(--c-cyan)}
.crumbs span.sep{color:var(--c-text-3);opacity:.6}
.crumbs strong{color:var(--c-text);font-weight:600}
.top-search{
  margin-left:auto;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);
  border-radius:var(--r-btn);padding:9px 14px;min-width:230px;
  transition:border-color var(--t),box-shadow var(--t);
}
.top-search:focus-within{border-color:rgba(47,224,230,.6);box-shadow:0 0 0 4px rgba(47,224,230,.12)}
.top-search i{color:var(--c-text-3);font-size:14px}
.top-search input{flex:1;background:transparent;border:0;color:var(--c-text);font-size:14px;outline:none;min-width:0}
.top-search input::placeholder{color:var(--c-text-3)}
.top-links{display:flex;align-items:center;gap:16px}
.top-links a.minor{color:var(--c-text-2);font-size:14px}
.top-links a.minor:hover{color:var(--c-cyan)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:12px 22px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform var(--t),filter var(--t),background var(--t),border-color var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--c-cyan),#37c9ff 55%,var(--c-purple));
  color:#06121A;
  box-shadow:0 0 22px rgba(47,224,230,.32),inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#06121A}
.btn-secondary{
  background:rgba(255,255,255,.05);border-color:var(--c-line);color:var(--c-text);
}
.btn-secondary:hover{border-color:rgba(47,224,230,.5);transform:translateY(-2px);color:var(--c-text)}
.btn-ghost{background:transparent;border-color:rgba(47,224,230,.45);color:var(--c-cyan)}
.btn-ghost:hover{background:var(--c-cyan-soft);transform:translateY(-2px);color:var(--c-cyan)}
.btn-sm{padding:9px 16px;font-size:13.5px}
.btn-block{width:100%;padding:14px 22px}
.btn-glow{box-shadow:0 0 28px rgba(47,224,230,.45),inset 0 1px 0 rgba(255,255,255,.4)}

/* ---------- 通用板块 ---------- */
.sec{padding:var(--s6) 0;position:relative;z-index:1}
.sec-alt{background:linear-gradient(180deg,rgba(13,16,32,.92),rgba(10,12,24,.5));border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{max-width:760px;margin-bottom:var(--s5)}
.sec-head h2{margin-bottom:12px}
.sec-sub{color:var(--c-text-2);font-size:16px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--c-cyan);font-weight:600;margin-bottom:14px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--c-cyan-soft);border:1px solid rgba(47,224,230,.3);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-cyan);box-shadow:0 0 8px var(--c-cyan)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 76px;
  background:
    radial-gradient(900px 420px at 78% 8%,rgba(123,92,255,.20),transparent 62%),
    radial-gradient(760px 400px at 8% 82%,rgba(47,224,230,.14),transparent 60%),
    linear-gradient(180deg,#0C0F1F 0%,rgba(10,12,24,.4) 100%);
  border-bottom:1px solid var(--c-line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center}
.hero h1{margin:0 0 18px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--c-cyan),var(--c-purple));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{color:var(--c-text-2);font-size:17px;max-width:600px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:var(--s4)}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;border-top:1px solid var(--c-line);padding-top:22px}
.hero-stat strong{display:block;font-size:24px;font-variant-numeric:tabular-nums;color:var(--c-text)}
.hero-stat span{font-size:13px;color:var(--c-text-3)}
.hero-media{position:relative}
.hero-media-frame{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-card);
  aspect-ratio:16/10;
  background:linear-gradient(160deg,rgba(47,224,230,.1),rgba(123,92,255,.12));
}
.hero-media-frame img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 42%,rgba(10,12,24,.78) 100%);
}
.corner{position:absolute;width:26px;height:26px;border:2px solid var(--c-cyan);z-index:3;filter:drop-shadow(0 0 8px rgba(47,224,230,.7))}
.corner.tl{top:14px;left:14px;border-right:0;border-bottom:0;border-radius:8px 0 0 0}
.corner.tr{top:14px;right:14px;border-left:0;border-bottom:0;border-radius:0 8px 0 0}
.corner.bl{bottom:14px;left:14px;border-right:0;border-top:0;border-radius:0 0 0 8px}
.corner.br{bottom:14px;right:14px;border-left:0;border-top:0;border-radius:0 0 8px 0}
.media-badge{
  position:absolute;left:20px;bottom:20px;z-index:3;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);font-size:13px;
  background:rgba(10,12,24,.72);border:1px solid rgba(47,224,230,.4);color:var(--c-text);
  backdrop-filter:blur(8px);
}
.media-badge i{color:var(--c-cyan)}

/* ---------- 图文交错列表 ---------- */
.zig-list{display:flex;flex-direction:column;gap:var(--s6)}
.zig{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:center}
.zig.rev .zig-media{order:2}
.zig-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);background:var(--c-elev)}
.zig-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0;transition:transform 480ms cubic-bezier(.2,.7,.3,1)}
.zig:hover .zig-media img{transform:scale(1.03)}
.zig-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(10,12,24,.5));pointer-events:none}
.zig-body{padding:6px 0}
.zig-index{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;
  color:var(--c-purple);margin-bottom:10px;font-variant-numeric:tabular-nums;
}
.zig-body h3{margin-bottom:12px}
.zig-body > p{color:var(--c-text-2)}
.dot-list{display:grid;gap:10px;margin:18px 0 20px}
.dot-list li{position:relative;padding-left:26px;color:var(--c-text-2);font-size:15.5px}
.dot-list li::before{
  content:"";position:absolute;left:6px;top:12px;width:7px;height:7px;border-radius:50%;
  background:var(--c-cyan);box-shadow:0 0 10px rgba(47,224,230,.8);
}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--c-cyan)}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- 验证强度条 ---------- */
.meter-list{display:grid;gap:16px}
.meter{
  display:grid;grid-template-columns:250px minmax(0,1fr) 110px;gap:24px;align-items:center;
  padding:20px 26px;border-radius:16px;
  background:var(--c-glass);border:1px solid var(--c-line);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t),background var(--t);
}
.meter:hover{border-color:rgba(47,224,230,.4);transform:translateY(-4px);box-shadow:var(--sh-hover);background:rgba(255,255,255,.06)}
.meter-name{display:flex;align-items:center;gap:14px}
.meter-name i{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(123,92,255,.14);border:1px solid rgba(123,92,255,.35);color:#b9a8ff;font-size:16px;
}
.meter-name h3{font-size:17px}
.meter-name span{display:block;font-size:13px;color:var(--c-text-3);font-weight:400}
.bar{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-cyan),var(--c-purple))}
.meter-tag{
  justify-self:end;font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(47,224,230,.35);color:var(--c-cyan);font-variant-numeric:tabular-nums;
  background:rgba(47,224,230,.06);
}
.meter-note{
  grid-column:1 / -1;color:var(--c-text-3);font-size:14.5px;margin:0;
  padding-top:14px;border-top:1px dashed var(--c-line);
}

/* ---------- 问题速查 ---------- */
.issue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.issue{
  display:flex;gap:20px;padding:24px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid var(--c-line);
  transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.issue:hover{border-color:rgba(123,92,255,.45);transform:translateY(-4px);box-shadow:var(--sh-hover)}
.issue-no{
  font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;
  color:transparent;background:linear-gradient(135deg,var(--c-cyan),var(--c-purple));
  -webkit-background-clip:text;background-clip:text;line-height:1.2;
}
.issue h3{font-size:17.5px;margin-bottom:8px}
.issue p{color:var(--c-text-2);font-size:15.5px;margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{
  background:var(--c-glass) !important;border:1px solid var(--c-line) !important;
  border-radius:14px;margin-bottom:12px;overflow:hidden;
  transition:border-color var(--t),background var(--t);
}
.accordion-item:hover{border-color:rgba(47,224,230,.35) !important}
.accordion-item.is-active{background:rgba(47,224,230,.05) !important;border-color:rgba(47,224,230,.4) !important}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px !important;background:transparent !important;border:0 !important;
  color:var(--c-text) !important;font-size:17px;font-weight:600;line-height:1.6;
}
.accordion-title:hover{background:rgba(255,255,255,.03) !important}
.accordion-title::before{display:none !important}
.accordion-title i{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  border:1px solid rgba(47,224,230,.4);color:var(--c-cyan);
  transition:transform var(--t),background var(--t);
}
.accordion-item.is-active .accordion-title i{transform:rotate(45deg);background:var(--c-cyan-soft)}
.accordion-content{
  padding:0 24px 20px !important;background:transparent !important;border:0 !important;
  color:var(--c-text-2) !important;line-height:1.9;font-size:15.5px;
}

/* ---------- CTA 横向条 ---------- */
.cta-strip{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:38px 44px;border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(47,224,230,.10),rgba(123,92,255,.16) 60%,rgba(10,12,24,.6));
  border:1px solid rgba(47,224,230,.35);
  box-shadow:var(--sh-card);
}
.cta-strip::before{
  content:"";position:absolute;width:340px;height:340px;right:-90px;top:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,224,230,.28),transparent 68%);filter:blur(12px);pointer-events:none;
}
.cta-copy{position:relative;max-width:640px}
.cta-copy h2{margin-bottom:10px}
.cta-copy p{color:var(--c-text-2);margin:0}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}
.cta-badge{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;color:var(--c-gold);border:1px solid rgba(255,176,32,.4);
  background:rgba(255,176,32,.08);padding:5px 14px;border-radius:var(--r-pill);
}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(13,16,32,.9),#090B15);
  padding:64px 0 28px;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand strong{font-size:16px}
.footer-col p{color:var(--c-text-3);font-size:14.5px;line-height:1.85}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--c-text)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-links span{color:var(--c-text-3);font-size:14.5px}
.footer-links a:hover{color:var(--c-cyan)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--c-text-3);font-size:13.5px;
}
.footer-bottom a{color:var(--c-text-3)}
.footer-bottom a:hover{color:var(--c-cyan)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,8,16,.66);
  backdrop-filter:blur(3px);z-index:90;opacity:0;pointer-events:none;
  transition:opacity var(--t);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:290px;z-index:100;
  padding:22px 20px;
  background:rgba(13,16,32,.96);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-right:1px solid var(--c-line);
  transform:translateX(-104%);
  transition:transform var(--t);
  display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:12px}
.drawer-head strong{font-size:15px;flex:1}
.drawer-close{
  background:transparent;border:1px solid var(--c-line);color:var(--c-text-2);
  width:36px;height:36px;border-radius:10px;cursor:pointer;
}
.drawer-close:hover{border-color:rgba(47,224,230,.5);color:var(--c-cyan)}
.drawer-links{display:flex;flex-direction:column;gap:6px;flex:1}
.drawer-link{
  padding:13px 14px;border-radius:12px;color:var(--c-text-2);font-size:15px;
  border:1px solid transparent;transition:background var(--t),color var(--t),border-color var(--t);
}
.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--c-text)}
.drawer-link.is-active{background:var(--c-cyan-soft);border-color:rgba(47,224,230,.4);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 32px}
  .topbar{padding:14px 32px}
}
@media (max-width:1023px){
  .side-nav{display:none}
  .app-main{margin-left:0 !important}
  .hamburger{display:inline-flex;align-items:center;justify-content:center}
  .top-search{display:none}
  .hero{padding:56px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .zig{grid-template-columns:1fr;gap:26px}
  .zig.rev .zig-media{order:0}
  .zig-list{gap:56px}
  .meter{grid-template-columns:1fr;gap:14px}
  .meter-tag{justify-self:start}
  .issue-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .sec{padding:64px 0}
  .cta-strip{padding:32px 28px}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 16px}
  .topbar{padding:12px 16px;gap:14px}
  .crumbs{font-size:12.5px;overflow:hidden;white-space:nowrap}
  .top-links a.minor{display:none}
  .sec{padding:52px 0}
  .sec-head{margin-bottom:30px}
  h3{font-size:17.5px}
  .hero{padding:40px 0 48px}
  .hero-stats{gap:20px}
  .hero-actions .btn{flex:1 1 100%}
  .cta-strip{padding:26px 20px;gap:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .accordion-title{padding:16px 18px !important;font-size:16px}
  .accordion-content{padding:0 18px 18px !important}
}

/* roulang page: category2 */
:root{
  --bg:#0A0C18;
  --bg-2:#0D1020;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.075);
  --elev:#141A33;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --cy:#2FE0E6;
  --vi:#7B5CFF;
  --gold:#FFB020;
  --danger:#FF6B6B;
  --txt:#E8ECF8;
  --txt-2:#9AA3C4;
  --txt-3:#6E7797;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh:0 18px 40px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-hi:0 26px 56px rgba(0,0,0,.55), 0 0 0 1px rgba(47,224,230,.28), inset 0 1px 0 rgba(255,255,255,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:88px;
  --nav-w-open:240px;
  --sp:8px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:64px 64px;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(720px 420px at 12% -6%,rgba(123,92,255,.20),transparent 66%),
    radial-gradient(620px 380px at 92% 6%,rgba(47,224,230,.13),transparent 68%);
}

img{max-width:100%;display:block;border-radius:var(--r-img);border:1px solid var(--line);object-fit:cover;}

a{color:var(--txt);text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--cy);}

h1,h2,h3,h4{margin:0;font-weight:700;color:var(--txt);line-height:1.35;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

:focus-visible{outline:2px solid var(--cy);outline-offset:3px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.app-shell{position:relative;min-height:100vh;}

.main-wrap{
  margin-left:var(--nav-w);
  position:relative;
  z-index:1;
  transition:margin-left 220ms var(--ease);
}

.app-shell.nav-open .main-wrap{margin-left:var(--nav-w-open);}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 左侧竖向导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  z-index:40;
  display:flex;
  flex-direction:column;
  gap:24px;
  padding:24px 14px;
  background:linear-gradient(180deg,rgba(13,16,32,.96),rgba(10,12,24,.94));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  overflow:hidden;
  transition:width 240ms var(--ease),padding 240ms var(--ease);
}

.app-shell.nav-open .side-nav{width:var(--nav-w-open);padding:24px 18px;}

.side-brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:48px;
  padding:6px 6px 6px 4px;
  border-bottom:1px solid var(--line);
  padding-bottom:18px;
}

.brand-mark{
  flex:0 0 auto;
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:14px;
  font-size:20px;
  font-weight:700;
  color:#06121A;
  background:linear-gradient(135deg,var(--cy),var(--vi));
  box-shadow:0 0 22px rgba(47,224,230,.35);
}

.brand-text{min-width:0;opacity:0;transform:translateX(-6px);transition:opacity 200ms var(--ease),transform 200ms var(--ease);white-space:nowrap;}
.app-shell.nav-open .brand-text{opacity:1;transform:none;}
.brand-text strong{display:block;font-size:15px;font-weight:700;letter-spacing:.02em;}
.brand-text span{display:block;font-size:12px;color:var(--txt-3);line-height:1.6;}

.side-links{display:flex;flex-direction:column;gap:8px;flex:1 1 auto;}

.side-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  padding:13px 12px;
  border-radius:14px;
  color:var(--txt-2);
  font-size:14px;
  white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}

.side-link i{
  flex:0 0 24px;
  width:24px;
  text-align:center;
  font-size:16px;
  color:var(--txt-3);
  transition:color 220ms var(--ease);
}

.side-link .lbl{
  opacity:0;
  transform:translateX(-6px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease);
}

.app-shell.nav-open .side-link .lbl{opacity:1;transform:none;}

.side-link:hover{background:var(--glass);color:var(--txt);transform:translateX(2px);}
.side-link:hover i{color:var(--cy);}

.side-link.is-active{
  background:linear-gradient(90deg,rgba(47,224,230,.14),rgba(123,92,255,.08));
  color:var(--txt);
}

.side-link.is-active::before{
  content:"";
  position:absolute;
  left:0;top:12px;bottom:12px;
  width:3px;
  border-radius:3px;
  background:var(--cy);
  box-shadow:0 0 12px rgba(47,224,230,.9);
}

.side-link.is-active i{color:var(--cy);}

.side-foot{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--line);padding-top:18px;}

.nav-toggle{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  padding:11px 12px;
  border:1px solid var(--line-2);
  border-radius:12px;
  background:var(--glass);
  color:var(--txt-2);
  font-size:13px;
  cursor:pointer;
  white-space:nowrap;
  transition:all 220ms var(--ease);
}

.nav-toggle:hover{border-color:rgba(47,224,230,.5);color:var(--txt);background:var(--glass-2);}
.nav-toggle i{width:24px;text-align:center;font-size:15px;}

.side-login{
  display:flex;align-items:center;gap:12px;
  padding:12px;
  border-radius:12px;
  font-size:13px;
  color:#06121A;
  font-weight:700;
  background:linear-gradient(135deg,var(--cy),#48c8ff);
  box-shadow:0 0 20px rgba(47,224,230,.28);
  white-space:nowrap;
  transition:filter 220ms var(--ease),transform 220ms var(--ease);
}
.side-login:hover{filter:brightness(1.08);transform:translateY(-2px);color:#06121A;}
.side-login i{width:24px;text-align:center;}
.side-login span{opacity:0;transition:opacity 200ms var(--ease);}
.app-shell.nav-open .side-login span{opacity:1;}

/* ---------- 移动端顶栏 ---------- */
.mobile-topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:38;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 18px;
  background:rgba(10,12,24,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
}

.mobile-brand{display:flex;align-items:center;gap:10px;min-width:0;}
.mobile-brand .brand-mark{width:38px;height:38px;font-size:17px;border-radius:12px;}
.mobile-brand strong{font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

.burger{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid var(--line-2);
  background:var(--glass);
  color:var(--txt);
  font-size:17px;
  cursor:pointer;
  transition:all 220ms var(--ease);
}
.burger:hover{border-color:rgba(47,224,230,.5);color:var(--cy);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:50;
  background:rgba(6,8,16,.72);
  backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}

.drawer{
  position:fixed;
  top:0;left:0;bottom:0;
  width:min(82vw,320px);
  z-index:51;
  padding:24px 20px;
  background:linear-gradient(180deg,rgba(20,26,51,.98),rgba(10,12,24,.98));
  border-right:1px solid var(--line);
  transform:translateX(-102%);
  transition:transform 260ms var(--ease);
  display:flex;
  flex-direction:column;
  gap:20px;
  overflow-y:auto;
}
.drawer.open{transform:none;}

.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:16px;}
.drawer-close{
  width:38px;height:38px;display:grid;place-items:center;border-radius:10px;
  border:1px solid var(--line-2);background:var(--glass);color:var(--txt-2);cursor:pointer;
}
.drawer-close:hover{color:var(--cy);border-color:rgba(47,224,230,.5);}

.drawer-links{display:flex;flex-direction:column;gap:8px;}
.drawer-links a{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;border-radius:12px;
  color:var(--txt-2);font-size:15px;
  border:1px solid transparent;
  transition:all 220ms var(--ease);
}
.drawer-links a i{width:22px;text-align:center;color:var(--txt-3);}
.drawer-links a:hover{background:var(--glass);color:var(--txt);}
.drawer-links a.is-active{
  background:linear-gradient(90deg,rgba(47,224,230,.14),rgba(123,92,255,.08));
  color:var(--txt);
  border-color:rgba(47,224,230,.28);
}
.drawer-links a.is-active i{color:var(--cy);}

.drawer-cta{
  margin-top:auto;
  display:block;text-align:center;
  padding:14px 18px;
  border-radius:12px;
  font-weight:700;
  color:#06121A;
  background:linear-gradient(135deg,var(--cy),#48c8ff);
  box-shadow:0 0 24px rgba(47,224,230,.3);
}
.drawer-cta:hover{color:#06121A;filter:brightness(1.08);}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform 220ms var(--ease),filter 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.btn-primary{
  color:#06121A;
  background:linear-gradient(135deg,var(--cy),#4ad2ff);
  box-shadow:0 10px 28px rgba(47,224,230,.26);
}
.btn-primary:hover{color:#06121A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 34px rgba(47,224,230,.36);}
.btn-primary:active{transform:translateY(0);}

.btn-ghost{
  color:var(--txt);
  background:var(--glass);
  border-color:var(--line-2);
}
.btn-ghost:hover{color:var(--txt);border-color:rgba(47,224,230,.55);background:var(--glass-2);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

.btn-violet{
  color:var(--txt);
  background:linear-gradient(135deg,rgba(123,92,255,.9),rgba(47,224,230,.7));
}
.btn-violet:hover{filter:brightness(1.08);transform:translateY(-2px);}

.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:10px;}

/* ---------- 徽章 ---------- */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  line-height:1.7;
  color:var(--cy);
  border:1px solid rgba(47,224,230,.4);
  background:rgba(47,224,230,.08);
}
.pill-violet{color:#c3b4ff;border-color:rgba(123,92,255,.45);background:rgba(123,92,255,.12);}
.pill-gold{color:var(--gold);border-color:rgba(255,176,32,.45);background:rgba(255,176,32,.1);}
.pill-mute{color:var(--txt-3);border-color:var(--line-2);background:var(--glass);}

/* ---------- 顶栏条 ---------- */
.topbar{
  position:sticky;top:0;z-index:30;
  background:rgba(10,12,24,.82);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:14px 0;
}

.crumbs{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--txt-3);flex-wrap:wrap;}
.crumbs a{color:var(--txt-3);}
.crumbs a:hover{color:var(--cy);}
.crumbs .sep{color:var(--txt-3);opacity:.6;}
.crumbs .cur{color:var(--txt-2);}

.topbar-actions{display:flex;align-items:center;gap:12px;}
.topbar-link{
  font-size:14px;color:var(--txt-2);
  padding:9px 16px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);
  transition:all 220ms var(--ease);
}
.topbar-link:hover{color:var(--txt);border-color:rgba(47,224,230,.45);}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:64px 0 72px;overflow:hidden;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;
  align-items:center;
}

.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  color:var(--cy);
  border:1px solid rgba(47,224,230,.35);
  background:rgba(47,224,230,.07);
  margin-bottom:20px;
}

.page-hero h1{
  font-size:42px;
  line-height:1.28;
  margin-bottom:18px;
  background:linear-gradient(120deg,#F4F7FF 20%,#9FE9F2 62%,#C0B4FF 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.hero-sub{font-size:17px;color:var(--txt-2);max-width:560px;margin-bottom:26px;}

.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}

.hero-facts{display:flex;flex-wrap:wrap;gap:28px;}
.hero-fact strong{display:block;font-size:26px;color:var(--cy);font-variant-numeric:tabular-nums;line-height:1.4;}
.hero-fact span{font-size:13px;color:var(--txt-3);}

.hero-visual{
  position:relative;
  padding:14px;
  border-radius:22px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  box-shadow:var(--sh);
}
.hero-visual::before{
  content:"";
  position:absolute;inset:0;
  border-radius:22px;
  padding:1px;
  background:linear-gradient(135deg,rgba(47,224,230,.7),rgba(123,92,255,.55),rgba(47,224,230,.15));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.hero-visual img{
  width:100%;
  aspect-ratio:16/10;
  border-radius:16px;
  border-color:rgba(255,255,255,.1);
}
.hero-visual .corner{
  position:absolute;
  width:22px;height:22px;
  border:2px solid var(--cy);
  opacity:.85;
  pointer-events:none;
}
.hero-visual .corner.tl{top:6px;left:6px;border-right:0;border-bottom:0;border-radius:8px 0 0 0;}
.hero-visual .corner.tr{top:6px;right:6px;border-left:0;border-bottom:0;border-radius:0 8px 0 0;}
.hero-visual .corner.bl{bottom:6px;left:6px;border-right:0;border-top:0;border-radius:0 0 0 8px;}
.hero-visual .corner.br{bottom:6px;right:6px;border-left:0;border-top:0;border-radius:0 0 8px 0;}

.hero-caption{
  position:absolute;
  left:26px;bottom:26px;
  padding:8px 14px;
  border-radius:10px;
  font-size:12.5px;
  color:var(--txt);
  background:rgba(10,12,24,.7);
  border:1px solid var(--line-2);
  backdrop-filter:blur(8px);
}

/* ---------- 板块 ---------- */
.section{padding:76px 0;position:relative;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{font-size:29px;line-height:1.35;}
.section-head .section-desc{margin-top:10px;font-size:15px;color:var(--txt-2);max-width:660px;}
.section-more{font-size:14px;color:var(--cy);display:inline-flex;align-items:center;gap:6px;}
.section-more:hover{color:#7ef0f4;}

/* ---------- 数据条 ---------- */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.stat-cell{
  padding:22px 20px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line);
  box-shadow:var(--sh);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.stat-cell:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.4);}
.stat-cell strong{
  display:block;
  font-size:28px;
  color:var(--cy);
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.stat-cell span{font-size:13.5px;color:var(--txt-3);}

/* ---------- 双列玻璃网格卡 ---------- */
.gcard{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:16px;
  height:100%;
  padding:24px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--sh);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.gcard::before{
  content:"";
  position:absolute;inset:0;
  border-radius:var(--r-card);
  padding:1px;
  background:linear-gradient(135deg,rgba(47,224,230,.45),rgba(123,92,255,.35),rgba(47,224,230,.08));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
  transition:background 220ms var(--ease);
}
.gcard:hover{transform:translateY(-4px);box-shadow:var(--sh-hi);}
.gcard:hover::before{background:linear-gradient(135deg,rgba(47,224,230,.85),rgba(123,92,255,.6),rgba(47,224,230,.25));}

.gcard-thumb{
  width:100%;
  aspect-ratio:16/9;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--elev);
}
.gcard-thumb img{width:100%;height:100%;border-radius:var(--r-img);}

.gcard h3{font-size:19px;line-height:1.5;}
.gcard p{font-size:15px;color:var(--txt-2);}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;}

/* ---------- 等级卡 ---------- */
.tier-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.tier-card{
  position:relative;
  padding:28px 24px;
  border-radius:var(--r-card);
  background:linear-gradient(170deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line);
  box-shadow:var(--sh);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.tier-card:hover{transform:translateY(-4px);border-color:rgba(47,224,230,.42);}
.tier-card:nth-child(2){margin-top:12px;}
.tier-card:nth-child(3){margin-top:24px;}
.tier-card.is-top{border-color:rgba(255,176,32,.55);}
.tier-card.is-top::after{
  content:"推荐";
  position:absolute;top:-13px;right:20px;
  padding:3px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  color:#1b1200;
  font-weight:700;
  background:linear-gradient(135deg,var(--gold),#ffd979);
  box-shadow:0 6px 18px rgba(255,176,32,.3);
}
.tier-badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:var(--r-pill);
  font-size:12.5px;
  color:#c3b4ff;
  border:1px solid rgba(123,92,255,.45);
  background:rgba(123,92,255,.12);
  margin-bottom:16px;
}
.tier-card h3{font-size:21px;margin-bottom:6px;}
.tier-count{font-size:13.5px;color:var(--txt-3);margin-bottom:18px;display:block;font-variant-numeric:tabular-nums;}
.tier-list{display:flex;flex-direction:column;gap:11px;margin-bottom:24px;}
.tier-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--txt-2);
}
.tier-list li::before{
  content:"";
  position:absolute;left:2px;top:11px;
  width:6px;height:6px;border-radius:50%;
  background:var(--cy);
  box-shadow:0 0 8px rgba(47,224,230,.8);
}
.tier-card.is-top .tier-list li::before{background:var(--gold);box-shadow:0 0 8px rgba(255,176,32,.8);}
.tier-card .btn{width:100%;}

/* ---------- 权益对比条 ---------- */
.compare-bar{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:rgba(255,255,255,.02);}
.compare-head{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);
  background:rgba(255,255,255,.045);
  border-bottom:1px solid var(--line);
}
.compare-head > div{
  padding:18px 20px;
  font-size:14px;
  font-weight:700;
  color:var(--txt-2);
  border-left:1px solid var(--line);
}
.compare-head > div:first-child{border-left:0;}
.compare-head .col-vip{
  color:var(--cy);
  background:rgba(47,224,230,.06);
}
.compare-row{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);
  border-bottom:1px solid var(--line);
  transition:background 220ms var(--ease);
}
.compare-row:last-child{border-bottom:0;}
.compare-row:hover{background:rgba(255,255,255,.03);}
.compare-row > div{
  padding:19px 20px;
  font-size:14.5px;
  min-height:60px;
  display:flex;
  align-items:center;
  gap:9px;
  border-left:1px solid var(--line);
}
.compare-row > div:first-child{border-left:0;color:var(--txt);font-weight:400;}
.compare-row .col-vip{background:rgba(47,224,230,.06);color:var(--txt);}
.compare-row .col-free{color:var(--txt-3);}
.row-name{display:flex;align-items:center;gap:10px;}
.row-name i{color:var(--vi);font-size:15px;width:20px;text-align:center;}
.ok{color:var(--cy);font-size:15px;}
.no{color:var(--txt-3);font-size:14px;letter-spacing:.1em;}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:960px;}
.faq-item{
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  overflow:hidden;
  transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.faq-item:hover{border-color:rgba(47,224,230,.32);}
.faq-item.is-open{border-color:rgba(47,224,230,.45);background:rgba(47,224,230,.045);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  background:none;border:0;text-align:left;
  color:var(--txt);
  font-size:16.5px;
  font-weight:700;
  cursor:pointer;
  transition:color 220ms var(--ease);
}
.faq-q span{flex:1 1 auto;}
.faq-ico{
  flex:0 0 auto;
  width:26px;height:26px;
  position:relative;
  border-radius:50%;
  border:1px solid var(--line-2);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--txt-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:11px;height:1.6px;}
.faq-ico::after{width:1.6px;height:11px;transition:opacity 220ms var(--ease);}
.faq-item.is-open .faq-ico{transform:rotate(45deg);border-color:rgba(47,224,230,.7);}
.faq-item.is-open .faq-ico::before,.faq-item.is-open .faq-ico::after{background:var(--cy);}
.faq-item.is-open .faq-ico::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 300ms var(--ease);
}
.faq-a p{
  padding:0 22px 22px;
  font-size:15.5px;
  color:var(--txt-2);
  line-height:1.9;
}

/* ---------- CTA 横条 ---------- */
.cta-band{
  position:relative;
  border-radius:24px;
  padding:44px 40px;
  background:linear-gradient(130deg,rgba(47,224,230,.13),rgba(123,92,255,.16) 55%,rgba(10,12,24,.2));
  border:1px solid rgba(47,224,230,.32);
  box-shadow:var(--sh);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-80px;top:-90px;
  width:280px;height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(123,92,255,.45),transparent 65%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:26px;margin-bottom:10px;}
.cta-inner p{font-size:15.5px;color:var(--txt-2);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,16,32,.9),rgba(10,12,24,.98));
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{font-size:16px;}
.footer-col p{font-size:14px;color:var(--txt-3);line-height:1.85;max-width:340px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--txt);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a,.footer-links span{font-size:14px;color:var(--txt-3);}
.footer-links a:hover{color:var(--cy);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--txt-3);
}
.footer-bottom a{color:var(--txt-3);}
.footer-bottom a:hover{color:var(--cy);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .side-nav{display:none;}
  .main-wrap{margin-left:0 !important;}
  .mobile-topbar{display:flex;}
  .container{padding:0 24px;}
  .page-hero{padding:44px 0 52px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero h1{font-size:32px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:24px;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tier-grid{grid-template-columns:1fr;}
  .tier-card:nth-child(2),.tier-card:nth-child(3){margin-top:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .compare-head{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr);}
  .compare-head > div,.compare-row > div{padding:16px 14px;font-size:13.5px;}
  .cta-band{padding:34px 26px;}
}

@media (max-width:639px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .hero-facts{gap:20px;}
  .hero-fact strong{font-size:22px;}
  .section{padding:48px 0;}
  .section-head h2{font-size:21px;}
  .stat-row{grid-template-columns:1fr;}
  .gcard{padding:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:28px 20px;border-radius:20px;}
  .cta-inner h2{font-size:21px;}
  .faq-q{font-size:15px;padding:17px 16px;}
  .faq-a p{padding:0 16px 18px;font-size:14.5px;}
  .compare-head{display:none;}
  .compare-row{
    grid-template-columns:1fr;
    padding:16px 16px 18px;
    gap:10px;
  }
  .compare-row > div{border-left:0;padding:0;min-height:auto;}
  .compare-row .col-vip,.compare-row .col-free{
    background:none;
    padding-left:26px;
    position:relative;
    font-size:14px;
  }
  .compare-row .col-vip::before{content:"会员：";position:absolute;left:0;color:var(--cy);}
  .compare-row .col-free::before{content:"免费：";position:absolute;left:0;color:var(--txt-3);}
  .compare-row .col-vip::before{content:"会员";left:0;}
  .compare-row .col-vip{padding-left:52px;}
  .compare-row .col-free{padding-left:52px;}
}