/* roulang page: index */
:root{
  --bg:#070C1C;
  --bg-deep:#050A18;
  --panel:#0E1730;
  --panel-2:#121C3A;
  --glass:rgba(22,32,64,.55);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(120,200,255,.10);
  --brand:#2FD8C6;
  --brand-2:#6BE9D8;
  --crimson:#FF4F7B;
  --gold:#F0C46A;
  --text:#EAF0FF;
  --text-2:#A8B4D4;
  --text-3:#6C7899;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 12px 28px rgba(3,8,24,.5);
  --shadow-glow:0 8px 24px rgba(47,216,198,.25);
  --ease:cubic-bezier(.2,.7,.2,1);
  --bs-body-bg:transparent;
  --bs-body-color:#EAF0FF;
  --bs-primary:#2FD8C6;
  --bs-link-color:#2FD8C6;
  --bs-link-hover-color:#6BE9D8;
  --bs-border-color:rgba(255,255,255,.10);
  --bs-font-sans-serif:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 88% -8%, rgba(47,216,198,.10), transparent 60%),
    radial-gradient(820px 520px at 4% 12%, rgba(255,79,123,.09), transparent 62%),
    var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-2)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;color:var(--text);font-weight:800;line-height:1.25}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container,.container-xxl{max-width:1200px;padding-left:32px;padding-right:32px}
@media (min-width:1400px){.container,.container-xxl{max-width:1240px}}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.sec-head{max-width:620px;margin-bottom:40px}
.sec-head h2{font-size:34px}
.sec-head .sec-sub{margin-top:14px;font-size:15px;color:var(--text-2);line-height:1.85}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);font-weight:700}
.badge-gold{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(240,196,106,.42);
  background:rgba(240,196,106,.08);
  color:var(--gold);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.badge-cat{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--r-xs);
  background:rgba(47,216,198,.12);
  border:1px solid rgba(47,216,198,.30);
  color:var(--brand);font-size:12px;font-weight:700;
}
.badge-cat.is-hot{background:rgba(255,79,123,.12);border-color:rgba(255,79,123,.32);color:var(--crimson)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{transition:all .24s var(--ease);font-weight:700;border-radius:var(--r-sm)}
.btn-brand{
  background:linear-gradient(135deg,#2FD8C6,#6BE9D8);
  color:#04231F;border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-pill);padding:13px 28px;font-size:15px;
  box-shadow:var(--shadow-glow);
}
.btn-brand:hover{transform:translateY(-2px);filter:brightness(1.06);color:#04231F;box-shadow:0 10px 32px rgba(47,216,198,.34)}
.btn-brand:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(47,216,198,.28)}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);padding:13px 26px;font-size:15px;
}
.btn-ghost:hover{border-color:var(--brand);color:#fff;transform:translateY(-2px)}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.03);
  color:var(--text);font-size:13px;font-weight:700;
}
.btn-mini:hover{border-color:var(--brand);color:#fff;background:rgba(47,216,198,.08)}
.btn-block{display:block;width:100%;text-align:center}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  transition:background .3s var(--ease),height .3s var(--ease),border-color .3s var(--ease);
  border-bottom:1px solid transparent;
  background:linear-gradient(180deg,rgba(7,12,28,.72),rgba(7,12,28,0));
}
.site-header.is-scrolled{
  background:rgba(10,16,36,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(120,200,255,.12);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,216,198,.22),rgba(255,79,123,.18));
  border:1px solid rgba(120,200,255,.22);
  color:var(--brand);font-weight:800;font-size:19px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;color:var(--text-2);font-size:15px;font-weight:600;
  padding:9px 14px;border-radius:10px;transition:all .22s var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.04)}
.nav-link.is-active{color:var(--text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--crimson));border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  padding:0;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;background:var(--text);border-radius:2px}
.nav-drawer{background:rgba(12,19,42,.94)!important;backdrop-filter:blur(18px);border-left:1px solid rgba(120,200,255,.14)!important;color:var(--text);width:300px}
.nav-drawer .offcanvas-header{border-bottom:1px solid var(--line)}
.drawer-close{width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);font-size:20px;line-height:1;cursor:pointer}
.drawer-link{display:block;padding:15px 4px;font-size:18px;font-weight:700;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--brand)}
.drawer-link:hover{color:#fff}

/* ---------- Hero ---------- */
.hero{padding:56px 0 72px;position:relative}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,200,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,200,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 30% 20%,#000,transparent 75%);
  -webkit-mask-image:radial-gradient(70% 60% at 30% 20%,#000,transparent 75%);
}
.hero .container{position:relative;z-index:1}
.hero-copy{max-width:620px}
.hero h1{font-size:48px;line-height:1.15;margin:22px 0 18px}
.hero h1 .hl{color:var(--brand)}
.hero-lead{font-size:17px;color:var(--text-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.trust-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--text-2);
}
.trust-pill i{color:var(--brand);font-size:12px}
.hero-visual{position:relative;display:flex;justify-content:center;padding:12px 0 26px}
.phone-card{
  position:relative;width:330px;max-width:100%;aspect-ratio:9/16;
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(120,200,255,.16);
  box-shadow:0 24px 60px rgba(3,8,24,.66);
}
.phone-card img{width:100%;height:100%;object-fit:cover}
.phone-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,.20) 0%,rgba(7,12,28,.72) 62%,rgba(7,12,28,.94) 100%);
}
.chip-duration{
  position:absolute;top:16px;right:16px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(7,12,28,.62);border:1px solid rgba(255,255,255,.16);
  font-size:12px;font-weight:700;color:var(--text);
}
.play-btn{
  position:absolute;z-index:2;top:50%;left:50%;transform:translate(-50%,-50%);
  width:78px;height:78px;border-radius:50%;cursor:pointer;
  background:rgba(47,216,198,.16);
  border:1px solid rgba(47,216,198,.55);
  box-shadow:0 0 0 10px rgba(47,216,198,.06),0 0 34px rgba(47,216,198,.30);
  display:grid;place-items:center;transition:all .26s var(--ease);
}
.play-btn i{color:var(--brand);font-size:22px;margin-left:4px}
.play-btn:hover{background:rgba(47,216,198,.26);box-shadow:0 0 0 16px rgba(47,216,198,.08),0 0 44px rgba(47,216,198,.42)}
.phone-caption{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  font-size:14px;font-weight:700;color:var(--text);
  padding-bottom:2px;
}
.float-card{
  position:absolute;border-radius:14px;overflow:hidden;
  border:1px solid rgba(120,200,255,.18);
  box-shadow:0 16px 34px rgba(3,8,24,.6);
}
.float-card img{width:100%;height:100%;object-fit:cover}
.float-card-a{width:112px;aspect-ratio:16/10;right:6%;bottom:34px}
.float-card-b{width:92px;aspect-ratio:16/10;left:4%;top:34px}

/* ---------- 横滑片段卡 ---------- */
.reel-wrap{position:relative}
.reel{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;-ms-overflow-style:none;
}
.reel::-webkit-scrollbar{display:none}
.reel-card{
  position:relative;flex:0 0 268px;width:268px;aspect-ratio:9/16;
  border-radius:var(--r-md);overflow:hidden;scroll-snap-align:start;
  border:1px solid var(--line);
  background:var(--panel);
  transition:all .26s var(--ease);
}
.reel-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.reel-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:110px;
  background:linear-gradient(180deg,rgba(7,12,28,0),rgba(7,12,28,.92));
}
.reel-card:hover{border-color:rgba(47,216,198,.55);box-shadow:0 0 24px rgba(47,216,198,.22);transform:translateY(-3px)}
.reel-card:hover img{transform:scale(1.04)}
.reel-num{
  position:absolute;top:14px;left:14px;z-index:2;
  min-width:32px;height:26px;padding:0 8px;border-radius:var(--r-xs);
  display:grid;place-items:center;
  background:rgba(7,12,28,.6);border:1px solid rgba(240,196,106,.5);
  color:var(--gold);font-size:12.5px;font-weight:800;
}
.reel-title{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;font-size:15px;font-weight:700;line-height:1.5}
.reel-arrow{
  width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);display:grid;place-items:center;cursor:pointer;
  transition:all .22s var(--ease);
}
.reel-arrow:hover{border-color:var(--brand);color:var(--brand)}
.reel-nav{display:flex;gap:10px;justify-content:flex-end;margin-bottom:14px}

/* ---------- 玻璃面板 ---------- */
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px);
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}

/* ---------- 品牌要点错落区 ---------- */
.point-row{display:flex;gap:34px;align-items:center;padding:34px 0;border-top:1px solid var(--line)}
.point-row:last-child{border-bottom:1px solid var(--line)}
.point-row.is-reverse{flex-direction:row-reverse}
.point-index{font-size:34px;font-weight:800;color:var(--brand);min-width:74px;letter-spacing:-.03em;line-height:1}
.point-row.is-reverse .point-index{color:var(--crimson)}
.point-body{flex:1}
.point-body h3{font-size:20px;margin-bottom:10px}
.point-body p{font-size:15px;color:var(--text-2);max-width:560px}
.point-media{flex:0 0 260px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line)}
.point-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.point-link{display:inline-flex;align-items:center;gap:7px;margin-top:14px;font-size:14px;font-weight:700}

/* ---------- 种草清单 ---------- */
.list-block{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:rgba(255,255,255,.015)}
.list-row{
  display:flex;align-items:center;gap:22px;padding:22px 26px;
  border-bottom:1px solid var(--line);transition:background .22s var(--ease);
}
.list-row:last-child{border-bottom:0}
.list-row:hover{background:rgba(255,255,255,.03)}
.list-num{font-size:28px;font-weight:800;min-width:52px;color:var(--brand);letter-spacing:-.03em}
.list-row:nth-child(even) .list-num{color:var(--crimson)}
.list-row:hover .list-num{filter:drop-shadow(0 0 12px rgba(47,216,198,.55))}
.list-main{flex:1;min-width:0}
.list-main h3{font-size:18px;margin-bottom:6px}
.list-main p{font-size:14px;color:var(--text-2)}
.list-side{flex:0 0 auto}

/* ---------- 资讯卡片 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;color:var(--text);
  box-shadow:var(--shadow-card);
  transition:all .26s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,.42);color:var(--text)}
.news-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel-2)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.05)}
.news-cover .badge-cat{position:absolute;top:12px;left:12px;background:rgba(7,12,28,.78)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{
  font-size:18px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--text-2);line-height:1.7;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:12.5px;color:var(--text-3)}
.news-meta .more{color:var(--brand);font-weight:700}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--r-md);color:var(--text-2);
}
.empty-state i{font-size:30px;color:var(--brand);margin-bottom:14px;display:block}

/* ---------- 口碑条 ---------- */
.voice-row{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 18px;scrollbar-width:none}
.voice-row::-webkit-scrollbar{display:none}
.voice-card{flex:0 0 300px;width:300px;padding:22px;scroll-snap-align:start;border-radius:var(--r-md)}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.voice-avatar{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(47,216,198,.28),rgba(255,79,123,.24));
  border:1px solid rgba(255,255,255,.14);color:#fff;font-weight:800;font-size:15px;
}
.voice-name{font-size:15px;font-weight:700}
.voice-src{font-size:12.5px;color:var(--gold);margin-top:2px}
.voice-text{font-size:14px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:14px;margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:700;
  padding:20px 54px 20px 22px;box-shadow:none;border:0;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand);background:rgba(47,216,198,.05)}
.faq-acc .accordion-button::after{display:none}
.faq-acc .accordion-button::before{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:16px;font-weight:700;
  border:1px solid var(--line);color:var(--text-2);
}
.faq-acc .accordion-button:not(.collapsed)::before{content:"–";border-color:rgba(47,216,198,.5);color:var(--brand)}
.faq-acc .accordion-button:focus{box-shadow:none}
.faq-acc .accordion-body{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85;border-left:3px solid transparent}
.faq-acc .accordion-collapse.show .accordion-body{border-left-color:var(--brand);margin-left:22px;padding-left:18px}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  padding:34px 36px;border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(47,216,198,.14),rgba(255,79,123,.12));
  border:1px solid var(--line-soft);
  backdrop-filter:blur(14px);
  display:flex;align-items:center;gap:26px;justify-content:space-between;flex-wrap:wrap;
}
.cta-band h2{font-size:22px}
.cta-band p{font-size:14.5px;color:var(--text-2);margin-top:8px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid transparent;position:relative;padding:64px 0 28px;margin-top:20px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(47,216,198,0),var(--brand),var(--crimson),rgba(47,216,198,0));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand{display:inline-flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-desc{font-size:14px;color:var(--text-2);max-width:330px;line-height:1.85}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-link{display:block;font-size:14px;color:var(--text-2);padding:6px 0}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
.footer-mail{font-size:14px;color:var(--text-2);line-height:1.9}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  height:64px;padding:0 16px;
  display:flex;align-items:center;gap:12px;
  background:rgba(10,16,36,.94);backdrop-filter:blur(16px);
  border-top:1px solid rgba(120,200,255,.14);
  transform:translateY(110%);transition:transform .3s var(--ease);
}
.mobile-bar.is-show{transform:translateY(0)}
.mobile-bar .btn-brand{flex:1;padding:12px 16px;font-size:14px}
.mobile-bar .btn-ghost{padding:12px 16px;font-size:14px}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:40px}
  .sec-head h2{font-size:30px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-actions .btn-brand{display:none}
  .container,.container-xxl{padding-left:24px;padding-right:24px}
  .hero{padding:36px 0 56px}
  .hero h1{font-size:34px}
  .section{padding:72px 0}
  .point-row,.point-row.is-reverse{flex-direction:column;align-items:flex-start;gap:20px}
  .point-media{flex:none;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container,.container-xxl{padding-left:20px;padding-right:20px}
  .hero h1{font-size:30px}
  .hero-lead{font-size:15.5px}
  .sec-head h2{font-size:26px}
  .section{padding:56px 0}
  .reel-card{flex:0 0 200px;width:200px}
  .reel-nav{display:none}
  .point-index{font-size:26px;min-width:auto}
  .list-row{flex-wrap:wrap;padding:20px 18px;gap:12px}
  .list-num{font-size:20px;min-width:34px}
  .list-side{width:100%}
  .voice-card{flex:0 0 264px;width:264px}
  .cta-band{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-bottom:84px}
  .phone-card{width:78vw}
  .float-card-a{right:0;bottom:18px;width:96px}
  .float-card-b{left:0;top:18px;width:80px}
  .faq-acc .accordion-button{font-size:16px;padding:18px 50px 18px 18px}
}
@media (max-width:575px){
  .hero h1{font-size:26px}
  .hero-cta{width:100%}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{flex:1;text-align:center;padding:12px 18px;font-size:14px}
  .brand-text{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --panel-2:#121C3A;
  --glass:rgba(22,32,64,.55);
  --cyan:#2FD8C6;
  --cyan-soft:#6BE9D8;
  --pink:#FF4F7B;
  --gold:#F0C46A;
  --text:#EAF0FF;
  --text-2:#A8B4D4;
  --text-3:#6C7899;
  --line:rgba(255,255,255,.08);
  --glass-line:rgba(120,200,255,.10);
  --radius-s:8px;
  --radius-m:12px;
  --radius-l:14px;
  --radius-card:18px;
  --radius-big:24px;
  --shadow-card:0 12px 28px rgba(3,8,24,.5);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.container{width:min(1200px,100% - 64px);margin-inline:auto;}
@media (max-width:768px){.container{width:min(1200px,100% - 40px);}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,12,28,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background-color .24s var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.55),rgba(255,79,123,.45),transparent);
  opacity:.7;
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:800;font-size:19px;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 6px 18px rgba(47,216,198,.28);
}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-block;padding:10px 16px;border-radius:10px;
  font-size:15.5px;color:var(--text-2);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--pink));
}
.nav-right{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:0;cursor:pointer;font-weight:600;line-height:1;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease);
}
.btn-primary{
  padding:14px 26px;border-radius:999px;font-size:15.5px;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 8px 24px rgba(47,216,198,.25);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 10px 32px rgba(47,216,198,.38);color:#04121A;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(47,216,198,.24);}
.btn-ghost{
  padding:13px 24px;border-radius:14px;font-size:15.5px;color:var(--text);
  background:transparent;border:1px solid rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:999px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:19px;height:2px;border-radius:2px;background:var(--text);}
.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:1100;
  background:rgba(14,23,48,.94);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-left:1px solid var(--glass-line);
  padding:28px 24px;display:flex;flex-direction:column;gap:8px;
  transform:translateX(105%);transition:transform .28s var(--ease);
}
.mobile-panel.is-open{transform:translateX(0);}
.mobile-panel .m-title{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin-bottom:8px;}
.mobile-panel a.m-link{
  display:block;padding:14px 12px;border-radius:12px;font-size:18px;color:var(--text-2);
}
.mobile-panel a.m-link.is-active{color:var(--text);background:rgba(47,216,198,.10);}
.mobile-panel a.m-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.mobile-panel .btn-primary{width:100%;margin-top:auto;}
.panel-close{
  align-self:flex-end;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text-2);font-size:18px;margin-bottom:12px;
}
@media (max-width:992px){
  .nav-links,.nav-right .btn-primary{display:none;}
  .nav-toggle{display:flex;}
  .nav-bar{height:64px;}
}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  min-height:320px;
  display:flex;align-items:flex-end;
  padding:64px 0 48px;
  background-image:linear-gradient(180deg,rgba(7,12,28,.62),rgba(7,12,28,.94)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 100% at 12% 100%,rgba(47,216,198,.16),transparent 70%),
             radial-gradient(50% 90% at 92% 0%,rgba(255,79,123,.14),transparent 70%);
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb-nav a:hover{color:var(--cyan);}
.breadcrumb-nav .sep{color:var(--text-3);opacity:.6;}
.breadcrumb-nav .current{color:var(--text-2);}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:13px;
  color:var(--gold);border:1px solid rgba(240,196,106,.42);
  background:rgba(240,196,106,.08);margin-bottom:20px;
}
.page-hero h1{font-size:48px;letter-spacing:-.02em;}
.hero-lead{margin-top:16px;font-size:17px;color:var(--text-2);max-width:620px;}
@media (max-width:992px){.page-hero h1{font-size:40px;}}
@media (max-width:768px){.page-hero{padding:48px 0 36px;min-height:280px;}.page-hero h1{font-size:32px;}}
@media (max-width:576px){.page-hero h1{font-size:28px;}}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-head{max-width:620px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;color:var(--cyan);
  margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:34px;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-sm{padding:44px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:26px;}
}

/* ---------- feature rows ---------- */
.feature-row{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;padding:36px 0;}
.feature-row + .feature-row{border-top:1px solid var(--line);}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-media{
  position:relative;border-radius:var(--radius-big);overflow:hidden;
  aspect-ratio:4/3;box-shadow:var(--shadow-card);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.feature-media:hover img{transform:scale(1.04);}
.feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,.06),rgba(7,12,28,.55));
}
.feature-index{
  position:absolute;top:18px;left:18px;z-index:2;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:700;
  color:var(--gold);border:1px solid rgba(240,196,106,.5);
  background:rgba(7,12,28,.6);backdrop-filter:blur(8px);
}
.feature-body h3{font-size:24px;margin-bottom:14px;}
.feature-body p{color:var(--text-2);font-size:16px;}
.feature-list{margin-top:18px;display:grid;gap:10px;}
.feature-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.feature-list i{color:var(--cyan);margin-top:6px;font-size:12px;}
@media (max-width:992px){
  .feature-row{grid-template-columns:1fr;gap:24px;padding:28px 0;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row.reverse .feature-body{order:0;}
  .feature-body h3{font-size:20px;}
}

/* ---------- stats ---------- */
.stats-band{
  background:linear-gradient(180deg,rgba(14,23,48,.9),rgba(7,12,28,.9));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stat{
  padding:32px 26px;border-radius:var(--radius-card);
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat-num{
  font-size:40px;font-weight:800;color:var(--cyan);line-height:1.1;
  font-family:"Barlow","DIN Alternate",system-ui,sans-serif;letter-spacing:-.02em;
}
.stat-num small{font-size:16px;color:var(--text-2);font-weight:600;margin-left:6px;letter-spacing:0;}
.stat-label{margin-top:10px;font-size:15px;font-weight:600;}
.stat-desc{margin-top:6px;font-size:14px;color:var(--text-3);}
@media (max-width:768px){
  .stats-grid{grid-template-columns:1fr;gap:14px;}
  .stat{padding:22px 20px;}
  .stat-num{font-size:32px;}
}

/* ---------- points list ---------- */
.points{display:grid;gap:0;}
.point{
  display:grid;grid-template-columns:64px 1fr auto;gap:20px;align-items:center;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background-color .22s var(--ease);
}
.point:hover{background:rgba(255,255,255,.03);}
.point-num{
  font-size:28px;font-weight:800;letter-spacing:-.02em;
  font-family:"Barlow","DIN Alternate",system-ui,sans-serif;
  color:var(--cyan);transition:text-shadow .22s var(--ease);
}
.point:nth-child(even) .point-num{color:var(--pink);}
.point:hover .point-num{text-shadow:0 0 16px rgba(47,216,198,.6);}
.point:nth-child(even):hover .point-num{text-shadow:0 0 16px rgba(255,79,123,.6);}
.point-body h3{font-size:19px;margin-bottom:6px;}
.point-body p{font-size:14px;color:var(--text-3);}
.point-tag{
  padding:7px 15px;border-radius:999px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);white-space:nowrap;
}
@media (max-width:768px){
  .point{grid-template-columns:1fr;gap:8px;padding:18px 4px;}
  .point-num{font-size:20px;}
  .point-tag{justify-self:start;}
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{
  border-radius:var(--radius-l);background:rgba(255,255,255,.03);
  border:1px solid var(--line);overflow:hidden;transition:border-color .22s var(--ease);
}
.faq-item.is-open{border-color:rgba(47,216,198,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;color:var(--text);
  font-size:17px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q .faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;color:var(--cyan);
  border:1px solid rgba(47,216,198,.4);transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(47,216,198,.12);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a-inner{
  padding:0 22px 22px 22px;font-size:15px;color:var(--text-2);
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--cyan);}
@media (max-width:576px){.faq-q{font-size:16px;padding:16px 16px;}.faq-a-inner{padding:0 16px 18px;}}

/* ---------- cta band ---------- */
.cta-band{
  border-radius:var(--radius-big);
  padding:40px 44px;
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(40% 120% at 100% 0%,rgba(255,79,123,.16),transparent 70%);
}
.cta-band h2{font-size:22px;position:relative;}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--text-2);position:relative;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;position:relative;}
@media (max-width:768px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
}

/* ---------- footer ---------- */
.site-footer{
  background:#050A18;border-top:1px solid transparent;position:relative;
  padding:60px 0 28px;margin-top:88px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.6),rgba(255,79,123,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px;font-size:16px;}
.footer-brand .brand-text{font-size:17px;font-weight:700;}
.footer-desc{font-size:14px;color:var(--text-3);max-width:340px;line-height:1.8;}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;}
.footer-link{display:block;font-size:14px;color:var(--text-3);padding:6px 0;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-mail{font-size:14px;color:var(--text-3);line-height:1.85;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--text-3);
}
@media (max-width:992px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:576px){.footer-grid{grid-template-columns:1fr;gap:24px;}.site-footer{margin-top:56px;padding:44px 0 24px;}}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --panel-2:#121C3A;
  --glass:rgba(22,32,64,.55);
  --glass-line:rgba(120,200,255,.10);
  --line:rgba(255,255,255,.08);
  --cyan:#2FD8C6;
  --cyan-soft:#6BE9D8;
  --rose:#FF4F7B;
  --gold:#F0C46A;
  --text:#EAF0FF;
  --text-2:#A8B4D4;
  --text-3:#6C7899;
  --r-card:18px;
  --r-lg:24px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 12px 28px rgba(3,8,24,.5);
  --dur:240ms;
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(1200px 600px at 12% -8%, rgba(47,216,198,.10), transparent 60%),
    radial-gradient(900px 520px at 88% 4%, rgba(255,79,123,.09), transparent 62%),
    var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--text);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.02em;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.num{font-family:"Barlow","DIN Alternate",system-ui,sans-serif;font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  transition:background var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.45),rgba(255,79,123,.35),transparent);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.site-header.is-stuck{
  background:rgba(7,12,28,.86);
  backdrop-filter:blur(16px);
  box-shadow:0 10px 30px rgba(3,8,24,.55);
}
.site-header.is-stuck::after{opacity:1;}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;
  transition:height var(--dur) var(--ease);
}
.site-header.is-stuck .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;color:#052B27;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 8px 22px rgba(47,216,198,.28),inset 0 1px 0 rgba(255,255,255,.5);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--rose));
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.18);
  font-size:15px;font-weight:600;color:#04241F;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 8px 24px rgba(47,216,198,.25);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(47,216,198,.34);color:#04241F;}
.btn-main:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(47,216,198,.22);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;border-radius:14px;
  border:1px solid rgba(255,255,255,.18);background:transparent;
  font-size:15px;color:var(--text-2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-ghost:hover{border-color:var(--cyan);color:var(--text);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  padding:0;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;margin:3px auto;border-radius:2px;background:var(--text-2);transition:background var(--dur) var(--ease);}
.nav-toggle:hover span{background:var(--cyan);}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:1050;
  background:rgba(10,17,38,.94);backdrop-filter:blur(18px);
  border-left:1px solid var(--glass-line);
  padding:84px 24px 28px;
  transform:translateX(104%);transition:transform 280ms var(--ease);
  display:flex;flex-direction:column;gap:8px;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer a{
  font-size:18px;padding:13px 12px;border-radius:12px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.drawer-close{
  position:absolute;top:20px;right:20px;width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);cursor:pointer;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,18,.6);z-index:1045;
  opacity:0;pointer-events:none;transition:opacity 260ms var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:44px 0 34px;
  background-image:linear-gradient(180deg,rgba(7,12,28,.72),rgba(7,12,28,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px;}
.breadcrumb-bar a{color:var(--text-3);transition:color var(--dur) var(--ease);}
.breadcrumb-bar a:hover{color:var(--cyan);}
.breadcrumb-bar .sep{color:rgba(255,255,255,.2);}
.breadcrumb-bar .current{color:var(--text-2);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.cat-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:8px;font-size:12px;font-weight:600;
  color:#241704;background:linear-gradient(135deg,var(--gold),#FFE0A6);
  box-shadow:0 6px 18px rgba(240,196,106,.22);
}
.article-hero h1{
  margin:16px 0 14px;
  font-size:40px;line-height:1.3;
  max-width:900px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
}
.meta-row .dot{color:rgba(255,255,255,.22);}
.meta-row .hl{color:var(--text-2);}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:56px 0 88px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,780px) 300px;
  gap:48px;
  justify-content:center;
  align-items:start;
}
.article-panel{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  padding:34px 36px 38px;
}
.article-head-line{
  display:flex;align-items:center;gap:10px;
  padding-bottom:18px;margin-bottom:26px;
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.article-head-line i{color:var(--cyan);}
.article-body{font-size:17px;line-height:1.85;color:var(--text-2);word-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:24px;line-height:1.45;color:var(--text);
  margin:1.9em 0 .85em;padding-left:14px;border-left:4px solid var(--cyan);
}
.article-body h3{font-size:20px;color:var(--text);margin:1.6em 0 .6em;}
.article-body h4{font-size:17px;color:var(--text);margin:1.4em 0 .5em;}
.article-body strong{color:var(--text);}
.article-body a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--cyan-soft);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em;line-height:1.9;}
.article-body ul li{list-style:disc;}
.article-body ol li{list-style:decimal;}
.article-body li{margin-bottom:6px;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 20px;
  border-left:3px solid var(--rose);
  background:rgba(255,79,123,.07);
  border-radius:0 14px 14px 0;
  color:var(--text-2);
}
.article-body img{border-radius:16px;margin:1.5em 0;width:100%;height:auto;}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body hr{border:0;height:1px;background:var(--line);margin:2em 0;}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;
  margin:1.5em 0;font-size:15px;
}
.article-body th,.article-body td{
  padding:11px 14px;border:1px solid var(--line);text-align:left;white-space:nowrap;
}
.article-body th{color:var(--text);background:rgba(255,255,255,.04);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body pre{
  background:#050A18;border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;margin:1.5em 0;font-size:14px;line-height:1.7;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.94em;color:var(--cyan-soft);
}
.article-body p code,.article-body li code{
  background:rgba(47,216,198,.10);border-radius:6px;padding:2px 6px;
}
.empty-state{
  text-align:center;padding:48px 20px;
  border:1px dashed rgba(255,255,255,.14);border-radius:var(--r-card);
  background:rgba(255,255,255,.02);
}
.empty-state i{font-size:32px;color:var(--text-3);}
.empty-state h2{font-size:22px;margin:16px 0 10px;}
.empty-state p{font-size:15px;color:var(--text-3);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;}
.aside-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  padding:20px 22px;
}
.aside-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.aside-title i{color:var(--cyan);font-size:13px;}
.aside-list li + li{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);}
.aside-list a{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);transition:color var(--dur) var(--ease);}
.aside-list a:hover{color:var(--cyan);}
.aside-list .idx{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;margin-top:2px;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:var(--cyan);
  background:rgba(47,216,198,.10);border:1px solid rgba(47,216,198,.28);
}
.aside-note{font-size:13px;line-height:1.75;color:var(--text-3);}
.aside-note strong{color:var(--text-2);font-weight:600;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tag:hover{border-color:var(--cyan);color:var(--cyan);}
.tag.is-hot{border-color:rgba(255,79,123,.42);color:#FFB4C8;background:rgba(255,79,123,.08);}

/* ---------- 标签分享行 ---------- */
.share-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.share-line .label{font-size:13px;color:var(--text-3);}
.share-btns{display:flex;gap:10px;margin-left:auto;}
.share-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  cursor:pointer;transition:all var(--dur) var(--ease);
}
.share-btn:hover{border-color:var(--cyan);color:var(--text);transform:translateY(-2px);}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 88px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{font-size:28px;}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(47,216,198,.42);}
.rel-cover{position:relative;aspect-ratio:16/10;overflow:hidden;}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.rel-card:hover .rel-cover img{transform:scale(1.05);}
.rel-cover .rel-badge{
  position:absolute;top:12px;left:12px;
  padding:4px 10px;border-radius:8px;font-size:11px;font-weight:600;
  color:var(--text);background:rgba(7,12,28,.7);border:1px solid var(--glass-line);backdrop-filter:blur(8px);
}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:17px;line-height:1.55;}
.rel-body p{font-size:14px;color:var(--text-3);line-height:1.7;}
.rel-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-3);}
.rel-meta .link{color:var(--cyan);}
.back-row{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:36px;}
.back-link{font-size:14px;color:var(--text-2);border-bottom:1px solid rgba(255,255,255,.16);padding-bottom:2px;transition:all var(--dur) var(--ease);}
.back-link:hover{color:var(--cyan);border-color:var(--cyan);}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  padding:34px 36px;margin-bottom:88px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--glass);
  border:1px solid var(--glass-line);border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-band h2{font-size:22px;margin-bottom:8px;}
.cta-band p{font-size:14px;color:var(--text-3);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#050A18;
  padding:64px 0 30px;
  border-top:1px solid transparent;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),var(--rose),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px;font-size:15px;}
.footer-brand .brand-text{font-size:16px;}
.footer-desc{font-size:13px;line-height:1.85;color:var(--text-3);max-width:340px;}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:var(--text-3);margin-bottom:11px;transition:all var(--dur) var(--ease);}
.footer-link:hover{color:var(--text);text-decoration:underline;text-underline-offset:4px;}
.footer-mail{font-size:13px;line-height:1.85;color:var(--text-3);max-width:320px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 600ms var(--ease),transform 600ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-hero h1{font-size:34px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
}
@media (max-width:992px){
  .container{padding:0 24px;}
  .nav-links{display:none;}
  .header-actions .btn-ghost{display:none;}
  .nav-toggle{display:block;}
  .article-hero{padding:34px 0 28px;}
  .article-hero h1{font-size:30px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px;}
  .article-aside{position:static;}
  .article-panel{padding:26px 24px 30px;}
  .article-body{font-size:16px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .article-hero h1{font-size:26px;}
  .article-wrap{padding:36px 0 56px;}
  .related{padding-bottom:56px;}
  .cta-band{padding:26px 22px;margin-bottom:56px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:23px;}
  .share-btns{margin-left:0;width:100%;}
}
@media (max-width:576px){
  .brand-text{font-size:15px;}
  .header-actions .btn-main{padding:9px 16px;font-size:14px;}
  .article-hero h1{font-size:23px;}
  .article-panel{padding:22px 18px 26px;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:18px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{flex:1 1 auto;justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#070C1C;
  --panel:#0E1730;
  --panel-2:#121C3A;
  --glass:rgba(22,32,64,.55);
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(120,200,255,.10);
  --cyan:#2FD8C6;
  --cyan-soft:#6BE9D8;
  --crimson:#FF4F7B;
  --gold:#F0C46A;
  --text:#EAF0FF;
  --muted:#A8B4D4;
  --dim:#6C7899;
  --r-card:18px;
  --r-big:24px;
  --r-btn:999px;
  --r-input:12px;
  --shadow-card:0 12px 28px rgba(3,8,24,.5);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease);}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:88px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:620px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent);}
h2{font-size:34px;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:16px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  transition:background .26s var(--ease),backdrop-filter .26s var(--ease),box-shadow .26s var(--ease);
  background:transparent;
}
.site-header.is-scrolled{
  background:rgba(7,12,28,.82);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 1px 0 rgba(255,255,255,.06),0 18px 40px rgba(3,8,24,.55);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;transition:height .26s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:#04121A;
  background:linear-gradient(140deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 6px 18px rgba(47,216,198,.28);
}
.brand-text{font-weight:700;font-size:18px;letter-spacing:-.01em;}
.nav-right{display:flex;align-items:center;gap:6px;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--muted);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--crimson));
}
.btn-primary-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  color:#04121A;font-size:15px;font-weight:700;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 8px 24px rgba(47,216,198,.25);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease);
}
.btn-primary-glow:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(47,216,198,.38);color:#04121A;}
.btn-primary-glow:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(47,216,198,.22);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:14px;
  background:transparent;border:1px solid rgba(255,255,255,.18);
  color:var(--text);font-size:15px;
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.btn-ghost:hover{border-color:var(--cyan);color:#fff;background:rgba(47,216,198,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--cyan);outline-offset:2px;border-radius:8px;
}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s var(--ease);}
.offcanvas{
  background:rgba(10,16,34,.94);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  color:var(--text);border-left:1px solid var(--line);
}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.offcanvas-title{font-size:16px;font-weight:700;}
.offcanvas-body{padding:20px;}
.mnav-link{
  display:block;padding:14px 12px;border-radius:12px;
  font-size:18px;color:var(--muted);
}
.mnav-link:hover{background:rgba(255,255,255,.04);color:var(--text);}
.mnav-link.is-active{color:var(--text);background:rgba(47,216,198,.10);}
.btn-close{filter:invert(1) grayscale(1) brightness(1.6);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background:
    radial-gradient(1100px 420px at 12% -12%, rgba(47,216,198,.14), transparent 62%),
    radial-gradient(880px 360px at 92% -6%, rgba(255,79,123,.12), transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px) 0 0/52px 52px,
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px) 0 0/52px 52px,
    var(--bg);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,198,.5),rgba(255,79,123,.4),transparent);
}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:22px;}
.breadcrumb-bar a:hover{color:var(--cyan);}
.breadcrumb-bar .sep{color:rgba(255,255,255,.2);}
.badge-official{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-btn);
  border:1px solid rgba(240,196,106,.45);
  background:rgba(240,196,106,.08);
  color:var(--gold);font-size:13px;letter-spacing:.02em;
}
.hero h1{font-size:48px;margin:18px 0 16px;max-width:760px;}
.hero h1 em{font-style:normal;color:var(--cyan);}
.hero-lead{max-width:620px;color:var(--muted);font-size:17px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.meta-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.meta-chip b{color:var(--cyan);font-weight:700;}
.dot-cyan{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(47,216,198,.8);}
.dot-crimson{width:6px;height:6px;border-radius:50%;background:var(--crimson);box-shadow:0 0 10px rgba(255,79,123,.8);}

/* ---------- 筛选行 ---------- */
.filter-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:18px 20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line-cyan);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.filter-label{font-size:13px;color:var(--dim);margin-right:6px;letter-spacing:.06em;}
.chip{
  display:inline-flex;align-items:center;
  padding:8px 18px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.14);background:transparent;
  color:var(--muted);font-size:14px;
  transition:all .22s var(--ease);
}
.chip:hover{border-color:rgba(47,216,198,.6);color:var(--text);}
.chip.is-active{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  color:#04121A;font-weight:700;border-color:transparent;
  box-shadow:0 8px 22px rgba(47,216,198,.28);
}

/* ---------- 卡片网格 ---------- */
.grid-topics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;
}
.topic-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-card);overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.topic-card:hover{
  transform:translateY(-4px);
  border-color:rgba(47,216,198,.45);
  box-shadow:0 18px 40px rgba(3,8,24,.62),0 0 0 1px rgba(47,216,198,.18);
}
.card-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--panel-2);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.topic-card:hover .card-cover img{transform:scale(1.05);}
.card-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,28,.05),rgba(7,12,28,.72));
}
.card-tag{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:5px 12px;border-radius:8px;
  font-size:12px;letter-spacing:.02em;
  background:rgba(240,196,106,.14);border:1px solid rgba(240,196,106,.4);color:var(--gold);
}
.card-tag.tag-crimson{background:rgba(255,79,123,.14);border-color:rgba(255,79,123,.42);color:#FF87A3;}
.card-tag.tag-cyan{background:rgba(47,216,198,.14);border-color:rgba(47,216,198,.42);color:var(--cyan);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;}
.card-body .card-desc{font-size:14.5px;color:var(--muted);line-height:1.75;}
.points{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--muted);}
.points li::before{
  content:"";flex:0 0 auto;margin-top:9px;
  width:5px;height:5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(47,216,198,.7);
}
.topic-card:nth-child(even) .points li::before{background:var(--crimson);box-shadow:0 0 8px rgba(255,79,123,.7);}
.card-foot{margin-top:auto;padding-top:8px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--cyan);
}
.link-arrow span{transition:transform .22s var(--ease);}
.link-arrow:hover span{transform:translateX(4px);}
.grid-foot{display:flex;flex-direction:column;align-items:center;gap:18px;margin-top:40px;}
.pager{display:flex;align-items:center;gap:8px;}
.pager a{
  min-width:40px;height:40px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--line);
  font-size:14px;color:var(--muted);background:rgba(255,255,255,.02);
  transition:all .22s var(--ease);
}
.pager a:hover{border-color:var(--cyan);color:var(--text);}
.pager a.is-active{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  color:#04121A;font-weight:700;border-color:transparent;
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px;}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line-cyan);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .26s var(--ease),border-color .26s var(--ease);
}
.step:hover{transform:translateY(-3px);border-color:rgba(47,216,198,.38);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  font-size:17px;font-weight:800;color:#04121A;
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  box-shadow:0 8px 20px rgba(47,216,198,.3);
  margin-bottom:16px;
}
.step:nth-child(2) .step-num{background:linear-gradient(135deg,var(--crimson),#FF87A3);color:#2A0512;box-shadow:0 8px 20px rgba(255,79,123,.3);}
.step:nth-child(4) .step-num{background:linear-gradient(135deg,var(--crimson),#FF87A3);color:#2A0512;box-shadow:0 8px 20px rgba(255,79,123,.3);}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--muted);}

/* ---------- 标签云 + 说明 ---------- */
.tag-panel{
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
  padding:34px;border-radius:var(--r-big);
  background:var(--panel-2);border:1px solid var(--line);
}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag-cloud a{
  padding:8px 16px;border-radius:var(--r-btn);
  border:1px dashed rgba(255,255,255,.16);
  font-size:14px;color:var(--muted);
}
.tag-cloud a:hover{border-style:solid;border-color:var(--cyan);color:var(--cyan);background:rgba(47,216,198,.07);}
.tag-panel h2{font-size:26px;margin-bottom:12px;}
.tag-panel p{font-size:15px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:34px;max-width:900px;}
.faq-item{
  border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  overflow:hidden;transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item[open]{border-color:rgba(47,216,198,.4);background:rgba(47,216,198,.04);border-left:3px solid var(--cyan);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-size:17px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(255,255,255,.2);transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cyan);transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:1.6px;}
.faq-icon::after{width:1.6px;height:12px;transition:opacity .24s var(--ease);}
.faq-item[open] .faq-icon{border-color:var(--cyan);transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- CTA ---------- */
.cta-panel{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:38px 40px;border-radius:var(--r-big);
  background:
    radial-gradient(700px 260px at 8% 0%, rgba(47,216,198,.16), transparent 60%),
    radial-gradient(600px 240px at 96% 100%, rgba(255,79,123,.14), transparent 60%),
    var(--glass);
  border:1px solid var(--line-cyan);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.cta-panel h2{font-size:26px;margin-bottom:10px;}
.cta-panel p{font-size:15px;color:var(--muted);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#050A18;border-top:1px solid transparent;
  background-image:linear-gradient(#050A18,#050A18),linear-gradient(90deg,var(--cyan),var(--crimson));
  background-origin:border-box;background-clip:padding-box,border-box;
  padding:64px 0 26px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
.footer-desc,.footer-mail{font-size:14px;color:var(--muted);line-height:1.85;max-width:340px;}
.footer-link{display:block;font-size:14px;color:var(--muted);padding:6px 0;}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  font-size:12px;color:var(--dim);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero h1{font-size:42px;}
}
@media (max-width:992px){
  .section{padding:68px 0;}
  .hero{padding:56px 0 52px;}
  .hero h1{font-size:36px;}
  h2{font-size:28px;}
  .grid-topics{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .tag-panel{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero h1{font-size:32px;}
  h2{font-size:26px;}
  .hero-actions .btn-primary-glow,.hero-actions .btn-ghost{flex:1 1 100%;}
  .cta-panel{padding:28px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-primary-glow,.cta-actions .btn-ghost{flex:1 1 100%;}
}
@media (max-width:640px){
  .grid-topics{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .filter-bar{padding:16px;}
  .chip{padding:7px 14px;font-size:13px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .brand-text{font-size:16px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}