/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#060A14;
  --bg-1:#0A101E;
  --bg-2:#05080F;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(140,190,255,.14);
  --line-hi:rgba(23,195,230,.42);
  --c-primary:#17C3E6;
  --c-primary-deep:#0E7FA8;
  --c-accent:#6C5CE7;
  --c-warm:#FFB547;
  --ok:#2BD9A0;
  --err:#FF6B6B;
  --tx-1:#E9F0FB;
  --tx-2:#9FB0CC;
  --tx-3:#6C7C99;
  --tx-inv:#05080F;
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.38);
  --shadow-hover:0 18px 46px rgba(0,0,0,.5);
  --glow:0 0 22px rgba(23,195,230,.42);
  --grad-btn:linear-gradient(135deg,#17C3E6,#6C5CE7);
  --grad-title:linear-gradient(90deg,#E9F0FB 55%,#17C3E6);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-body-bg:#060A14;
  --bs-body-color:#9FB0CC;
  --bs-border-color:rgba(140,190,255,.14);
  --bs-primary:#17C3E6;
  --bs-link-color:#17C3E6;
  --bs-link-hover-color:#6C5CE7;
  --bs-border-radius:12px;
  --bs-font-sans-serif:'PingFang SC','HarmonyOS Sans SC','Microsoft YaHei','Noto Sans SC',Inter,system-ui,-apple-system,'Segoe UI',sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.78;
  color:var(--tx-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 10% -8%, rgba(23,195,230,.17), transparent 60%),
    radial-gradient(760px 480px at 92% 2%, rgba(108,92,231,.15), transparent 62%),
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,58px 58px,58px 58px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{color:var(--tx-1);margin:0;font-weight:700;letter-spacing:-.2px;}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.4px;}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3;}
h3{font-size:21px;line-height:1.45;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#7ee0f6;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(23,195,230,.22);}
::selection{background:rgba(23,195,230,.3);color:#fff;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){
  .wrap{max-width:1240px;padding:0 24px;}
}

/* ============ 通用板块 ============ */
.section{padding:104px 0;position:relative;}
.section--alt{background:rgba(10,16,30,.72);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px;flex-wrap:wrap;}
.sec-head>div{max-width:720px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;color:var(--c-primary);margin-bottom:12px;}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-btn);}
.sec-desc{color:var(--tx-2);font-size:15px;margin-top:14px;}
.grad-text{background:var(--grad-title);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);}
.btn-glow{background:var(--grad-btn);color:#04121A;box-shadow:var(--glow);}
.btn-glow:hover,.btn-glow:focus-visible{color:#04121A;box-shadow:0 0 32px rgba(23,195,230,.58);transform:translateY(-2px);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--tx-1);}
.btn-outline:hover,.btn-outline:focus-visible{border-color:var(--line-hi);color:var(--tx-1);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.36);}
.btn:active{transform:translateY(0);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);}
.link-more svg{transition:transform .2s var(--ease);flex:0 0 auto;}
.link-more:hover svg{transform:translateX(3px);}

/* ============ 标签 ============ */
.pill{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:13px;line-height:1;letter-spacing:.2px;white-space:nowrap;}
.pill-cat{background:rgba(23,195,230,.12);color:#7fe3f7;border:1px solid rgba(23,195,230,.28);}
.pill-warm{background:rgba(255,181,71,.12);color:var(--c-warm);border:1px solid rgba(255,181,71,.3);}
.pill-purple{background:rgba(108,92,231,.14);color:#b3aaff;border:1px solid rgba(108,92,231,.3);}

/* ============ 玻璃卡片 ============ */
.glass-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.glass-card:hover{border-color:var(--line-hi);box-shadow:var(--shadow-hover);}
.card-accent::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;border-radius:var(--r-card) var(--r-card) 0 0;background:var(--grad-btn);}

/* ============ 双层导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;border-bottom:1px solid transparent;transition:background .25s var(--ease),border-color .25s var(--ease),backdrop-filter .25s var(--ease);}
.site-header.is-scrolled{background:var(--glass-strong);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom-color:var(--line);}
.topbar{height:70px;}
.topbar-inner{display:flex;align-items:center;gap:22px;height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-btn);display:grid;place-items:center;box-shadow:var(--glow);flex:0 0 auto;}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:19px;font-weight:800;color:var(--tx-1);letter-spacing:-.2px;}
.brand-name:hover{color:var(--tx-1);}
.search-box{position:relative;display:flex;align-items:center;gap:8px;flex:1 1 auto;max-width:420px;height:44px;padding:0 6px 0 14px;background:rgba(10,16,30,.85);border:1px solid var(--line);border-radius:12px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(23,195,230,.15);}
.search-box .s-icon{flex:0 0 auto;color:var(--tx-3);display:grid;place-items:center;}
.search-box input{flex:1 1 auto;min-width:0;height:100%;background:none;border:none;outline:none;color:var(--tx-1);font-size:14px;}
.search-box input::placeholder{color:var(--tx-3);}
.search-btn{flex:0 0 auto;height:34px;padding:0 14px;border-radius:9px;border:none;background:var(--grad-btn);color:#04121A;font-size:13px;font-weight:700;cursor:pointer;transition:box-shadow .2s var(--ease);}
.search-btn:hover{box-shadow:var(--glow);}
.topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.search-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--glass);color:var(--tx-1);align-items:center;justify-content:center;cursor:pointer;}

.channelbar{border-top:1px solid rgba(140,190,255,.08);}
.channel-inner{display:flex;align-items:center;gap:10px;height:54px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-pill{flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--tx-2);border:1px solid transparent;text-decoration:none;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);}
.channel-pill:hover{color:var(--tx-1);border-color:var(--line);background:var(--glass);}
.channel-pill.is-active{background:var(--grad-btn);color:#fff;box-shadow:0 0 18px rgba(23,195,230,.4);}
.channel-pill.is-active:hover{color:#fff;}

/* ============ Hero ============ */
.hero{position:relative;padding:76px 0 96px;overflow:hidden;}
.hero::before{content:"";position:absolute;left:-10%;right:-10%;top:-24%;height:680px;pointer-events:none;
  background:radial-gradient(620px 340px at 20% 32%, rgba(23,195,230,.22), transparent 62%),
             radial-gradient(540px 320px at 78% 10%, rgba(108,92,231,.2), transparent 60%);}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-brand{display:inline-flex;align-items:center;gap:9px;height:32px;padding:0 14px;margin-bottom:20px;border-radius:999px;border:1px solid var(--line-hi);background:rgba(23,195,230,.08);color:#9fe9f8;font-size:13px;font-weight:600;letter-spacing:.4px;}
.hero-brand svg{width:14px;height:14px;}
.hero-sub{font-size:clamp(17px,1.6vw,20px);color:var(--tx-1);font-weight:600;margin:18px 0 12px;line-height:1.6;}
.hero-text{font-size:15.5px;color:var(--tx-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.stat-chip{display:flex;flex-direction:column;gap:4px;min-width:126px;padding:12px 18px;border-radius:14px;border:1px solid var(--line);background:var(--glass);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);}
.stat-chip b{font-size:20px;font-weight:800;color:var(--c-warm);line-height:1.2;}
.stat-chip span{font-size:13px;color:var(--tx-3);}
.hero-visual{position:relative;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow-hover),0 0 44px rgba(23,195,230,.16);}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-visual::after{content:"";position:absolute;left:0;right:0;bottom:0;height:46%;background:linear-gradient(180deg,rgba(6,10,20,0),rgba(6,10,20,.92));}
.hero-visual .hero-tag{position:absolute;left:20px;bottom:20px;z-index:2;}

/* ============ Bento ============ */
.bento{display:grid;grid-template-columns:1.35fr 1fr;gap:22px;}
.bento-main{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:430px;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;background:var(--glass);box-shadow:var(--shadow-card);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.bento-main:hover{border-color:var(--line-hi);box-shadow:var(--shadow-hover);}
.bento-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.bento-main:hover img{transform:scale(1.04);}
.bento-copy{position:relative;z-index:2;padding:32px;background:linear-gradient(180deg,rgba(6,10,20,.05),rgba(6,10,20,.94));}
.bento-copy h3{margin:14px 0 10px;font-size:24px;}
.bento-copy p{font-size:15px;color:var(--tx-2);margin-bottom:16px;max-width:520px;}
.bento-side{display:grid;grid-template-rows:1fr 1fr;gap:22px;}
.mini-card{padding:26px;display:flex;flex-direction:column;gap:10px;overflow:hidden;}
.mini-card h3{font-size:18px;}
.mini-card p{font-size:14.5px;color:var(--tx-2);margin:0;}
.mini-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(23,195,230,.1);border:1px solid rgba(23,195,230,.28);color:var(--c-primary);}
.mini-icon svg{width:20px;height:20px;}

/* ============ 数据条 ============ */
.statbar{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:34px 32px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:var(--shadow-card);overflow:hidden;}
.statbar::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad-btn);}
.stat-item{border-left:1px solid var(--line);padding-left:22px;}
.stat-item:first-child{border-left:none;padding-left:0;}
.stat-num{display:block;font-size:clamp(28px,3vw,40px);font-weight:800;line-height:1.15;color:var(--c-warm);opacity:.7;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.stat-num.is-in{opacity:1;transform:translateY(0);}
.stat-num.accent{color:var(--c-primary);}
.stat-label{display:block;font-size:13px;color:var(--tx-3);margin-top:6px;}
.stat-text{font-size:14.5px;color:var(--tx-2);margin-top:8px;}

/* ============ 交替图文 ============ */
.flow{display:flex;flex-direction:column;gap:56px;}
.flow-row{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.flow-row.reverse .flow-media{order:2;}
.flow-media{position:relative;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow-card);}
.flow-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease);}
.flow-media:hover img{transform:scale(1.04);}
.flow-idx{display:block;font-size:44px;font-weight:800;line-height:1;color:rgba(233,240,251,.12);letter-spacing:-1px;margin-bottom:10px;}
.flow-copy h3{font-size:23px;margin-bottom:12px;}
.flow-copy p{font-size:15.5px;color:var(--tx-2);}
.tick-list{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.tick-list li{position:relative;padding-left:22px;font-size:15px;color:var(--tx-2);}
.tick-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px rgba(23,195,230,.65);}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;overflow:hidden;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:var(--shadow-card);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);}
.news-card:hover{border-color:var(--line-hi);box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.news-thumb{display:block;overflow:hidden;aspect-ratio:16/9;background:var(--bg-1);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{display:flex;flex-direction:column;gap:12px;flex:1 1 auto;padding:22px 24px 24px;min-width:0;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--tx-3);}
.news-meta time{letter-spacing:.2px;}
.news-title{font-size:17px;font-weight:600;line-height:1.55;margin:0;overflow-wrap:break-word;word-break:break-word;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-title a{color:var(--tx-1);}
.news-title a:hover{color:var(--c-primary);}
.news-sum{font-size:14px;color:var(--tx-2);margin:0;overflow-wrap:break-word;word-break:break-word;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-primary);font-weight:600;}
.news-foot svg{transition:transform .2s var(--ease);}
.news-card:hover .news-foot svg{transform:translateX(3px);}
.empty-state{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;text-align:center;border-radius:var(--r-card);border:1px dashed var(--line);background:var(--glass);}
.empty-state svg{width:44px;height:44px;color:var(--c-primary);}
.empty-state p{margin:0;color:var(--tx-2);font-size:15px;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:.86fr 1.14fr;gap:48px;align-items:start;}
.faq-aside p{font-size:15px;color:var(--tx-2);margin-top:16px;}
.faq-aside .faq-cta{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px;}
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:var(--line);--bs-accordion-color:var(--tx-2);
  --bs-accordion-btn-color:var(--tx-1);--bs-accordion-active-color:var(--tx-1);--bs-accordion-active-bg:rgba(23,195,230,.06);
  --bs-accordion-border-radius:14px;--bs-accordion-inner-border-radius:14px;--bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-padding-x:22px;--bs-accordion-btn-padding-y:18px;--bs-accordion-body-padding-x:22px;--bs-accordion-body-padding-y:18px;}
.accordion-item{background:var(--glass);margin-bottom:10px;border-radius:14px;overflow:hidden;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:border-color .2s var(--ease);}
.accordion-item:hover{border-color:var(--line-hi);}
.accordion-button{font-size:16px;font-weight:600;letter-spacing:0;background:transparent;box-shadow:none;}
.accordion-button:not(.collapsed){color:var(--tx-1);background:rgba(23,195,230,.06);box-shadow:inset 3px 0 0 var(--c-primary);}
.accordion-button::after{width:14px;height:14px;background-size:14px;transition:transform .2s var(--ease);
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%2317C3E6' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 6l5 5 5-5'/%3E%3C/svg%3E");}
.accordion-body{font-size:15px;color:var(--tx-2);line-height:1.8;}

/* ============ 联系区 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:28px;align-items:start;}
.info-card{padding:30px;}
.info-card h3{margin-bottom:18px;font-size:20px;}
.info-list{list-style:none;display:flex;flex-direction:column;gap:14px;}
.info-list li{display:flex;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line);font-size:14.5px;}
.info-list li:last-child{border-bottom:none;padding-bottom:0;}
.info-list span{color:var(--tx-3);flex:0 0 auto;}
.info-list b{color:var(--tx-1);font-weight:600;text-align:right;}
.info-meta{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--tx-3);}
.info-meta p{margin:0 0 6px;}
.form-card{padding:30px;}
.form-label{display:block;font-size:14px;color:var(--tx-2);margin-bottom:8px;}
.form-control,.form-select{background:var(--bg-1);border:1px solid var(--line);border-radius:12px;color:var(--tx-1);font-size:15px;min-height:48px;padding:0 16px;box-shadow:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);}
.form-control::placeholder{color:var(--tx-3);}
textarea.form-control{min-height:124px;padding:14px 16px;resize:vertical;line-height:1.7;}
.form-control:focus,.form-select:focus{background:var(--bg-1);color:var(--tx-1);border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(23,195,230,.16);}
.form-select option{background:var(--bg-1);color:var(--tx-1);}
.form-submit{margin-top:22px;width:100%;}
.form-note{margin-top:12px;font-size:12.5px;color:var(--tx-3);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding-top:64px;margin-top:20px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px;}
.footer-brand p{font-size:14.5px;color:var(--tx-2);margin:18px 0 0;max-width:360px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;border:1px solid var(--line);background:var(--glass);color:var(--tx-2);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);}
.footer-social a:hover{border-color:var(--line-hi);color:var(--c-primary);transform:translateY(-2px);}
.footer-social svg{width:17px;height:17px;}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--tx-1);}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14.5px;color:var(--tx-2);}
.footer-col a{color:var(--tx-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line);font-size:13px;color:var(--tx-3);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:88px 0;}
  .hero-inner{gap:40px;}
  .bento{grid-template-columns:1.2fr 1fr;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .hero{padding:56px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:640px;}
  .bento{grid-template-columns:1fr;}
  .bento-main{min-height:340px;}
  .bento-side{grid-template-rows:auto;grid-template-columns:1fr 1fr;}
  .statbar{grid-template-columns:1fr 1fr;gap:22px;}
  .stat-item:nth-child(3){border-left:none;padding-left:0;}
  .flow-row{grid-template-columns:1fr;gap:26px;}
  .flow-row.reverse .flow-media{order:0;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .search-box{display:none;}
  .search-toggle{display:inline-flex;}
  body.search-open .search-box{display:flex;position:absolute;left:20px;right:20px;top:76px;max-width:none;z-index:1040;background:rgba(10,16,30,.98);}
  .topbar-inner{position:relative;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .topbar,.topbar-inner{height:64px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .brand-name{font-size:17px;}
  .btn{min-height:44px;}
  .hero-actions .btn{width:100%;}
  .hero-badges .stat-chip{flex:1 1 calc(50% - 6px);min-width:0;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .bento-side{grid-template-columns:1fr;}
  .statbar{padding:26px 22px;}
}
@media (max-width:575px){
  .wrap{padding:0 16px;}
  .hero-text,.flow-copy p{font-size:15px;}
  .bento-copy{padding:24px;}
  .statbar{grid-template-columns:1fr;}
  .stat-item{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:16px;}
  .stat-item:first-child{border-top:none;padding-top:0;}
  .info-list li{flex-direction:column;gap:6px;}
  .info-list b{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .stat-num{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A14; --bg-1:#0A101E; --bg-2:#05080F;
  --glass:rgba(255,255,255,.045); --glass-strong:rgba(255,255,255,.07);
  --line:rgba(140,190,255,.14); --line-hi:rgba(23,195,230,.42);
  --c-primary:#17C3E6; --c-primary-deep:#0E7FA8; --c-accent:#6C5CE7; --c-warm:#FFB547;
  --tx-1:#E9F0FB; --tx-2:#9FB0CC; --tx-3:#6C7C99; --tx-inv:#05080F;
  --ok:#2BD9A0; --warn:#FFB547; --err:#FF6B6B;
  --r-card:16px; --r-lg:20px; --r-btn:10px; --r-img:12px;
  --sh-card:0 10px 30px rgba(0,0,0,.38);
  --sh-hover:0 18px 46px rgba(0,0,0,.5);
  --glow:0 0 22px rgba(23,195,230,.42);
  --glow-hi:0 0 30px rgba(23,195,230,.58);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-body-bg:#060A14;
  --bs-body-color:#9FB0CC;
  --bs-border-color:rgba(140,190,255,.14);
  --bs-primary:#17C3E6;
  --bs-link-color:#17C3E6;
  --bs-link-hover-color:#6C5CE7;
  --bs-border-radius:12px;
  --bs-font-sans-serif:var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(23,195,230,.16), transparent 62%),
    radial-gradient(760px 480px at 88% 4%, rgba(108,92,231,.14), transparent 66%),
    linear-gradient(rgba(140,190,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,190,255,.035) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  color:var(--tx-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.78;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:#7FE3F7;}
h1,h2,h3,h4{color:var(--tx-1);margin:0;font-weight:700;letter-spacing:0;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(23,195,230,.22);border-radius:6px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:1400px){.wrap{max-width:1240px;padding:0 24px;}}

/* ============ 双层导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled .topbar{
  background:var(--glass-strong);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.topbar-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#17C3E6,#6C5CE7);
  box-shadow:0 0 18px rgba(23,195,230,.4);
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:18px;font-weight:800;color:var(--tx-1);letter-spacing:.2px;white-space:nowrap;}
.brand:hover .brand-name{color:var(--c-primary);}

.search-box{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;
  background:rgba(5,8,15,.72);border:1px solid var(--line);border-radius:999px;
  padding:4px 6px 4px 14px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-box:focus-within{border-color:var(--c-primary);box-shadow:var(--glow);}
.s-icon{display:grid;place-items:center;color:var(--tx-3);flex:0 0 auto;}
.search-box input{
  flex:1 1 auto;background:transparent;border:0;outline:none;color:var(--tx-1);
  font-size:14px;height:36px;min-width:0;
}
.search-box input::placeholder{color:var(--tx-3);}
.search-btn{
  border:0;border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;
  color:var(--tx-inv);background:linear-gradient(135deg,#17C3E6,#6C5CE7);cursor:pointer;
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.search-btn:hover{box-shadow:var(--glow);transform:translateY(-1px);}
.topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.search-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--glass);color:var(--tx-1);cursor:pointer;place-items:center;
}
.search-toggle:hover{border-color:var(--line-hi);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-glow{background:linear-gradient(135deg,#17C3E6,#6C5CE7);color:var(--tx-inv);box-shadow:var(--glow);}
.btn-glow:hover{color:var(--tx-inv);transform:translateY(-2px);box-shadow:var(--glow-hi);}
.btn-outline{background:transparent;border-color:var(--line);color:var(--tx-1);}
.btn-outline:hover{border-color:var(--c-primary);color:var(--tx-1);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);
  font-weight:600;font-size:14px;padding:0;
}
.btn-text svg{transition:transform var(--dur) var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}

.channelbar{border-bottom:1px solid var(--line);background:rgba(6,10,20,.84);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);}
.channel-inner{display:flex;align-items:center;gap:10px;height:54px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--tx-2);border:1px solid transparent;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.channel-pill:hover{color:var(--tx-1);border-color:var(--line-hi);}
.channel-pill.is-active{
  color:#fff;background:linear-gradient(135deg,rgba(23,195,230,.9),rgba(108,92,231,.9));
  box-shadow:0 0 18px rgba(23,195,230,.32);
}

/* ============ 频道头 ============ */
.page-hero{position:relative;padding:64px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  opacity:.26;filter:saturate(1.05);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(700px 380px at 18% 20%, rgba(23,195,230,.22), transparent 62%),
             linear-gradient(180deg, rgba(6,10,20,.46) 0%, rgba(6,10,20,.94) 100%);
}
.page-hero .wrap{position:relative;z-index:2;}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.2px;color:var(--tx-3);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb-nav a{color:var(--tx-3);}
.breadcrumb-nav a:hover{color:var(--c-primary);}
.breadcrumb-nav .current{color:var(--c-primary);}
.breadcrumb-nav .sep{color:var(--tx-3);opacity:.6;}
.hero-flex{display:flex;align-items:flex-end;gap:32px;flex-wrap:wrap;}
.hero-copy{flex:1 1 580px;min-width:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-warm);background:rgba(255,181,71,.1);border:1px solid rgba(255,181,71,.28);
  padding:5px 14px;border-radius:999px;margin-bottom:18px;letter-spacing:.3px;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.4px;
  background:linear-gradient(90deg,#E9F0FB 58%,#17C3E6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  word-break:break-word;overflow-wrap:break-word;
}
.hero-sub{font-size:17px;color:var(--tx-2);margin-top:18px;max-width:640px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;border:1px solid transparent;
}
.tag-info{color:#8EE9F8;background:rgba(23,195,230,.12);border-color:rgba(23,195,230,.3);}
.tag-warm{color:var(--c-warm);background:rgba(255,181,71,.1);border-color:rgba(255,181,71,.28);}
.tag-accent{color:#C3BBFF;background:rgba(108,92,231,.14);border-color:rgba(108,92,231,.32);}
.hero-side{flex:0 0 auto;}

/* ============ 板块通用 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.25;}
.sec-head p{color:var(--tx-3);font-size:14px;margin-top:10px;}
.sec-line{width:56px;height:3px;border-radius:999px;background:linear-gradient(90deg,#17C3E6,#6C5CE7);margin-bottom:16px;}

/* ============ 两栏布局 ============ */
.cat-layout{display:grid;grid-template-columns:3fr 9fr;gap:28px;align-items:start;}
.cat-side{position:sticky;top:140px;}
.side-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);padding:20px 18px;
}
.side-title{font-size:13px;font-weight:700;color:var(--tx-3);letter-spacing:1.2px;margin-bottom:14px;}
.side-list li+li{border-top:1px solid var(--line);}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:12px 12px;border-radius:10px;font-size:14px;color:var(--tx-2);
  transition:all var(--dur) var(--ease);
}
.side-list a:hover{color:var(--tx-1);background:rgba(23,195,230,.08);}
.side-list a.is-current{color:var(--tx-1);background:rgba(23,195,230,.12);box-shadow:inset 3px 0 0 var(--c-primary);}
.side-list .cnt{font-size:12px;color:var(--tx-3);font-family:var(--font-num);}
.side-help{margin-top:16px;padding:18px;border-radius:var(--r-card);border:1px solid var(--line);background:linear-gradient(160deg,rgba(108,92,231,.14),rgba(23,195,230,.06));}
.side-help h3{font-size:15px;margin-bottom:8px;}
.side-help p{font-size:13px;color:var(--tx-2);margin-bottom:14px;}

/* ============ 内容网格 ============ */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.res-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--line-hi);}
.res-link{display:flex;flex-direction:column;height:100%;color:inherit;}
.res-link:hover{color:inherit;}
.res-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.res-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.res-card:hover .res-media img{transform:scale(1.04);}
.res-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,20,0) 40%,rgba(6,10,20,.72) 100%);}
.res-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.res-body h3{font-size:18px;font-weight:600;line-height:1.42;}
.res-body p{
  font-size:14px;color:var(--tx-2);line-height:1.72;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.res-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--c-primary);margin-top:auto;}
.res-more svg{transition:transform var(--dur) var(--ease);}
.res-card:hover .res-more svg{transform:translateX(3px);}

/* ============ 要点玻璃列表 ============ */
.point-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.point-item{
  position:relative;padding:24px 24px 24px 76px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-card);transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.point-item:hover{border-color:var(--line-hi);transform:translateY(-2px);}
.point-num{
  position:absolute;left:22px;top:24px;font-family:var(--font-num);font-size:22px;font-weight:800;
  color:var(--c-warm);letter-spacing:.5px;
}
.point-item h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.point-item p{font-size:14px;color:var(--tx-2);line-height:1.74;}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  overflow:hidden;position:relative;box-shadow:var(--sh-card);
}
.stat-bar::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,#17C3E6,#6C5CE7,transparent);}
.stat-cell{padding:28px 24px;border-right:1px solid var(--line);}
.stat-cell:last-child{border-right:0;}
.stat-num{font-family:var(--font-num);font-size:clamp(28px,3vw,40px);font-weight:800;color:var(--c-primary);line-height:1.1;}
.stat-num.warm{color:var(--c-warm);}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;color:var(--tx-2);}
.stat-label{font-size:13px;color:var(--tx-3);margin-top:8px;letter-spacing:.2px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.faq-intro h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;}
.faq-intro p{color:var(--tx-2);font-size:15px;margin-top:16px;}
.faq-contact{margin-top:22px;padding:18px 20px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);}
.faq-contact span{display:block;font-size:13px;color:var(--tx-3);margin-bottom:6px;}
.faq-contact strong{color:var(--tx-1);font-size:15px;}
.accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;
  margin-bottom:10px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.accordion-item:hover{border-color:var(--line-hi);}
.accordion-button{
  background:transparent;color:var(--tx-1);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none !important;line-height:1.5;
}
.accordion-button:not(.collapsed){
  color:var(--c-primary);background:rgba(23,195,230,.07);
  box-shadow:inset 3px 0 0 var(--c-primary) !important;
}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2317C3E6'%3E%3Cpath d='M8 11.2 3.2 6.4l1.2-1.2L8 8.8l3.6-3.6 1.2 1.2z'/%3E%3C/svg%3E");
  background-size:16px;width:16px;height:16px;
}
.accordion-body{padding:0 22px 20px;color:var(--tx-2);font-size:15px;line-height:1.8;}
.accordion-body p{margin:0;}

/* ============ CTA 通栏 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--bg-2);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 300px at 20% 30%, rgba(23,195,230,.2), transparent 60%),
             radial-gradient(520px 300px at 82% 70%, rgba(108,92,231,.18), transparent 62%);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 0;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);line-height:1.28;}
.cta-inner p{color:var(--tx-2);font-size:15px;margin-top:12px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding-top:64px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:44px;}
.footer-brand p{font-size:14px;color:var(--tx-2);margin-top:16px;max-width:330px;line-height:1.78;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--tx-2);
  transition:all var(--dur) var(--ease);
}
.footer-social a:hover{color:var(--c-primary);border-color:var(--line-hi);transform:translateY(-2px);}
.footer-social svg{width:18px;height:18px;}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--tx-1);}
.footer-col li{font-size:14px;color:var(--tx-2);line-height:1.7;margin-bottom:10px;}
.footer-col a{color:var(--tx-2);}
.footer-col a:hover{color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;display:flex;
  align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--tx-3);
}

/* ============ 响应式 ============ */
@media(max-width:1199px){
  .cat-layout{grid-template-columns:4fr 8fr;gap:22px;}
}
@media(max-width:991px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .topbar-inner{gap:14px;}
  .search-box{display:none;}
  .search-toggle{display:grid;}
  .cat-layout{grid-template-columns:1fr;}
  .cat-side{position:static;}
  .side-card{display:none;}
  .side-pills{display:flex;gap:10px;overflow-x:auto;padding:2px 0 6px;scrollbar-width:none;}
  .side-pills::-webkit-scrollbar{display:none;}
  .side-pills a{
    flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 16px;
    border-radius:999px;border:1px solid var(--line);background:var(--glass);
    font-size:14px;color:var(--tx-2);
  }
  .side-pills a.is-current{color:#fff;background:linear-gradient(135deg,rgba(23,195,230,.9),rgba(108,92,231,.9));border-color:transparent;}
  .faq-layout{grid-template-columns:1fr;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-cell:nth-child(2){border-right:0;}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-inner{padding:56px 0;}
}
@media(max-width:767px){
  .section{padding:56px 0;}
  .grid-2{grid-template-columns:1fr;}
  .point-list{grid-template-columns:1fr;}
  .hero-flex{flex-direction:column;align-items:flex-start;}
  .hero-side{width:100%;}
  .hero-side .btn{width:100%;}
  .page-hero{padding:48px 0 44px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .topbar-actions .btn-outline{display:none !important;}
}
@media(max-width:575px){
  body{font-size:15px;}
  .brand-name{font-size:16px;}
  .topbar-inner{height:60px;}
  .channel-inner{height:50px;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);}
  .stat-cell:last-child{border-bottom:0;}
  .btn{width:100%;}
  .topbar-actions{width:auto;}
  .topbar-actions .btn-glow{padding:0 16px;font-size:14px;width:auto;}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;}
  .res-card:hover{transform:none;}
}

/* roulang page: article */
:root{
  --bg-0:#060A14;
  --bg-1:#0A101E;
  --bg-2:#05080F;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(140,190,255,.14);
  --line-hi:rgba(23,195,230,.42);
  --c-primary:#17C3E6;
  --c-primary-deep:#0E7FA8;
  --c-accent:#6C5CE7;
  --c-warm:#FFB547;
  --tx-1:#E9F0FB;
  --tx-2:#9FB0CC;
  --tx-3:#6C7C99;
  --tx-inv:#05080F;
  --ok:#2BD9A0;
  --warn:#FFB547;
  --err:#FF6B6B;
  --grad-btn:linear-gradient(135deg,#17C3E6,#6C5CE7);
  --grad-title:linear-gradient(90deg,#E9F0FB 60%,#17C3E6);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 10px 30px rgba(0,0,0,.38);
  --sh-card-hi:0 18px 46px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:200ms var(--ease);
}

:root,[data-bs-theme=dark]{
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--tx-2);
  --bs-border-color:var(--line);
  --bs-primary:#17C3E6;
  --bs-primary-rgb:23,195,230;
  --bs-link-color:#17C3E6;
  --bs-link-hover-color:#6C5CE7;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.78;
  color:var(--tx-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 10% -10%, rgba(23,195,230,.10), transparent 62%),
    radial-gradient(780px 480px at 92% 2%, rgba(108,92,231,.13), transparent 64%),
    linear-gradient(rgba(140,190,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,190,255,.045) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:#7FE4F8}
h1,h2,h3,h4,h5{color:var(--tx-1);margin:0 0 12px;font-weight:700;letter-spacing:0}
p{margin:0 0 1.1em}
ul,ol{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(23,195,230,.22);border-radius:8px}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1400px){
  .wrap{max-width:1240px;padding:0 24px}
}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:0 0 0 4px rgba(23,195,230,.25);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn:active{transform:translateY(1px)}
.btn-glow{
  background:var(--grad-btn);
  color:#04121A;
  box-shadow:0 0 22px rgba(23,195,230,.42);
  border-color:transparent;
}
.btn-glow:hover,.btn-glow:focus{
  color:#04121A;
  transform:translateY(-2px);
  box-shadow:0 0 34px rgba(23,195,230,.58);
}
.btn-outline{
  background:transparent;
  color:var(--tx-1);
  border:1px solid var(--line);
}
.btn-outline:hover,.btn-outline:focus{
  color:var(--tx-1);
  border-color:var(--line-hi);
  background:rgba(23,195,230,.08);
  transform:translateY(-2px);
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-primary);
  font-weight:600;
  font-size:14px;
}
.link-arrow svg{transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  transition:background var(--t),box-shadow var(--t);
}
.topbar{
  position:relative;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(6,10,20,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(10px);
  transition:background var(--t),border-color var(--t);
}
.site-header.is-scrolled .topbar{
  background:var(--glass-strong);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:18px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  color:var(--tx-1);
}
.brand:hover{color:var(--tx-1)}
.brand-mark{
  width:34px;height:34px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--grad-btn);
  box-shadow:0 0 18px rgba(23,195,230,.45);
}
.brand-mark svg{width:19px;height:19px}
.brand-name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.2px;
  color:var(--tx-1);
  white-space:nowrap;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  max-width:400px;
  height:44px;
  padding:0 6px 0 14px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:999px;
  transition:border-color var(--t),box-shadow var(--t);
}
.search-box:focus-within{
  border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(23,195,230,.16);
}
.search-box .s-icon{display:inline-flex;color:var(--tx-3);flex-shrink:0}
.search-box input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  padding:0 10px;
  background:transparent;
  border:0;
  outline:none;
  color:var(--tx-1);
  font-size:14px;
}
.search-box input::placeholder{color:var(--tx-3)}
.search-btn{
  flex-shrink:0;
  height:34px;
  padding:0 16px;
  border:0;
  border-radius:999px;
  background:var(--grad-btn);
  color:#04121A;
  font-size:13px;
  font-weight:700;
  cursor:pointer;
  transition:box-shadow var(--t),transform var(--t);
}
.search-btn:hover{box-shadow:0 0 18px rgba(23,195,230,.5);transform:translateY(-1px)}
.topbar-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex-shrink:0;
}
.topbar-actions .btn{min-height:44px;padding:0 18px;font-size:14px}
.search-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--tx-1);
  cursor:pointer;
  transition:border-color var(--t),background var(--t);
}
.search-toggle:hover{border-color:var(--line-hi);background:rgba(23,195,230,.08)}

.channelbar{
  background:rgba(5,8,15,.82);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.channel-inner{
  display:flex;
  align-items:center;
  gap:10px;
  height:52px;
  overflow-x:auto;
  scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{display:none}
.channel-pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--tx-2);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  transition:color var(--t),border-color var(--t),background var(--t),box-shadow var(--t);
}
.channel-pill:hover{
  color:var(--tx-1);
  border-color:var(--line-hi);
  background:rgba(23,195,230,.07);
}
.channel-pill.is-active{
  background:var(--grad-btn);
  color:#04121A;
  box-shadow:0 0 18px rgba(23,195,230,.4);
  border-color:transparent;
}

/* ---------- 阅读进度条 ---------- */
.progress-track{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  background:rgba(255,255,255,.05);
  z-index:1060;
}
.progress-track span{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,#17C3E6,#6C5CE7);
  box-shadow:0 0 12px rgba(23,195,230,.65);
  transition:width 90ms linear;
}

/* ---------- 文章头部 ---------- */
.page-band{
  position:relative;
  padding:34px 0 30px;
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(680px 260px at 88% -30%, rgba(23,195,230,.16), transparent 70%);
  pointer-events:none;
}
.page-band .wrap{position:relative;z-index:1}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--tx-3);
  margin-bottom:18px;
}
.crumbs a{color:var(--tx-3)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:rgba(140,190,255,.35)}
.crumbs .current{color:var(--tx-2);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumbs .name-now{color:var(--c-primary)}

.head-main{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:24px;
  align-items:end;
}
.article-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.4px;
  margin:0 0 16px;
  background:var(--grad-title);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  word-break:break-word;
  overflow-wrap:anywhere;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.2px;
  line-height:1;
}
.pill-cat{background:rgba(23,195,230,.14);color:#7FE4F8;border:1px solid rgba(23,195,230,.28)}
.pill-warm{background:rgba(255,181,71,.14);color:var(--c-warm);border:1px solid rgba(255,181,71,.28)}
.pill-accent{background:rgba(108,92,231,.16);color:#B4AAFF;border:1px solid rgba(108,92,231,.32)}
.pill-plain{background:var(--glass);color:var(--tx-3);border:1px solid var(--line)}
.head-side{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}
.head-side .hint{font-size:13px;color:var(--tx-3)}

/* ---------- 正文区 ---------- */
.main-wrap{padding:52px 0 88px}
.reader{
  max-width:820px;
  margin:0 auto;
}
.article-body{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:34px 38px 30px;
  box-shadow:var(--sh-card);
  backdrop-filter:blur(14px);
  font-size:16px;
  line-height:1.85;
  color:var(--tx-2);
  word-break:break-word;
  overflow-wrap:anywhere;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;
  padding-left:16px;
  margin:40px 0 16px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  line-height:1.4;
  color:var(--tx-1);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:7px;bottom:7px;
  width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,#17C3E6,#6C5CE7);
}
.article-body h3{
  margin:28px 0 12px;
  font-size:20px;
  font-weight:600;
  color:var(--tx-1);
}
.article-body h4{margin:22px 0 10px;font-size:17px;color:var(--tx-1)}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--c-primary);border-bottom:1px solid transparent}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body strong{color:var(--tx-1)}
.article-body ul{list-style:none;padding:0;margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin:8px 0}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;top:.72em;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 8px rgba(23,195,230,.7);
}
.article-body ol{list-style:none;counter-reset:olc;padding:0;margin:0 0 1.2em}
.article-body ol li{counter-increment:olc;position:relative;padding-left:34px;margin:10px 0}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;
  left:0;top:.32em;
  width:22px;height:22px;
  border-radius:8px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(23,195,230,.14);
  color:var(--c-primary);
  font-size:12px;
  font-weight:700;
}
.article-body blockquote{
  margin:22px 0;
  padding:16px 20px;
  background:var(--glass-strong);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--tx-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;
  height:auto;
  border-radius:var(--r-img);
  margin:22px auto;
  border:1px solid var(--line);
}
.article-body figure{margin:22px 0}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--tx-3);
}
.article-body code{
  background:rgba(23,195,230,.10);
  color:#8FE6F7;
  padding:2px 7px;
  border-radius:6px;
  font-size:.94em;
}
.article-body pre{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-img);
  padding:16px 18px;
  margin:22px 0;
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body pre code{background:none;color:#BFE9F6;padding:0}
.table-scroll{
  margin:22px 0;
  border:1px solid var(--line);
  border-radius:var(--r-img);
  overflow-x:auto;
  background:rgba(5,8,15,.5);
}
.article-body table{width:100%;border-collapse:collapse;min-width:520px;font-size:15px}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{color:var(--tx-1);font-weight:600;background:rgba(23,195,230,.06)}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;height:1px;background:var(--line);margin:34px 0}

.article-foot{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}

/* ---------- 空态 ---------- */
.empty-card{
  max-width:820px;
  margin:0 auto;
  padding:56px 32px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
  backdrop-filter:blur(14px);
}
.empty-card .icon{
  width:64px;height:64px;
  margin:0 auto 18px;
  border-radius:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(23,195,230,.10);
  border:1px solid var(--line-hi);
  color:var(--c-primary);
}
.empty-card h2{font-size:22px;margin-bottom:10px}
.empty-card p{color:var(--tx-3);margin-bottom:22px}

/* ---------- 板块通用 ---------- */
.section{padding:64px 0}
.section-alt{background:var(--bg-1);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:20px;
  margin-bottom:28px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  margin:0 0 8px;
  font-weight:700;
}
.section-head .sub{font-size:14px;color:var(--tx-3);margin:0}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--c-primary);
  margin-bottom:10px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:var(--grad-btn);
}

/* ---------- 推荐卡片 ---------- */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  backdrop-filter:blur(14px);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.rec-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-card-hi);
  border-color:var(--line-hi);
}
.rec-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-1);
}
.rec-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform var(--t);
}
.rec-card:hover .rec-thumb img{transform:scale(1.04)}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-body p{
  font-size:14px;
  color:var(--tx-3);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-body .go{margin-top:auto}

/* ---------- 导航入口 ---------- */
.entry-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:26px;
  padding:20px 24px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
}
.entry-links{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 常见问题 ---------- */
.faq-wrap{
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  gap:40px;
  align-items:start;
}
.faq-intro h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.faq-intro p{color:var(--tx-3);font-size:15px}
.faq-contact{
  margin-top:20px;
  padding:18px 20px;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  font-size:14px;
  color:var(--tx-2);
  backdrop-filter:blur(14px);
}
.accordion-item{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card) !important;
  margin-bottom:10px;
  overflow:hidden;
  backdrop-filter:blur(14px);
}
.accordion-button{
  background:transparent;
  color:var(--tx-1);
  font-size:16px;
  font-weight:600;
  padding:18px 22px;
  border:0;
  box-shadow:none;
}
.accordion-button:not(.collapsed){
  color:var(--tx-1);
  background:rgba(23,195,230,.07);
  box-shadow:inset 3px 0 0 var(--c-primary);
}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(23,195,230,.22)}
.accordion-button::after{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317C3E6' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-size:18px;
  width:18px;height:18px;
}
.accordion-body{
  padding:6px 22px 20px;
  color:var(--tx-2);
  font-size:15px;
  line-height:1.8;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(620px 300px at 80% 120%, rgba(108,92,231,.20), transparent 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(24px,2.8vw,34px);margin-bottom:12px}
.cta-inner p{color:var(--tx-2);margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:58px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{
  font-size:14px;
  color:var(--tx-3);
  max-width:320px;
  margin-bottom:18px;
}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  border:1px solid var(--line);
  color:var(--tx-2);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.footer-social a:hover{
  color:var(--c-primary);
  border-color:var(--line-hi);
  background:rgba(23,195,230,.08);
  transform:translateY(-2px);
}
.footer-social svg{width:18px;height:18px}
.footer-col h4{
  font-size:15px;
  color:var(--tx-1);
  margin-bottom:14px;
  font-weight:700;
}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{font-size:14px;color:var(--tx-3);margin-bottom:10px}
.footer-col a{color:var(--tx-3)}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:18px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  font-size:13px;
  color:var(--tx-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991.98px){
  .search-box{display:none}
  .search-toggle{display:inline-flex}
  .site-header.search-open .search-box{
    display:flex;
    position:absolute;
    left:20px;right:20px;
    top:calc(100% + 8px);
    max-width:none;
    z-index:20;
    background:var(--bg-1);
    box-shadow:var(--sh-card-hi);
  }
  .head-main{grid-template-columns:minmax(0,1fr)}
  .head-side{align-items:flex-start}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:26px}
  .cta-inner{grid-template-columns:minmax(0,1fr)}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-body{padding:28px 26px}
}
@media (max-width:767.98px){
  .page-band{padding:26px 0 24px}
  .main-wrap{padding:40px 0 64px}
  .section{padding:52px 0}
  .rec-grid{grid-template-columns:minmax(0,1fr)}
  .brand-name{font-size:16px}
  .topbar{height:64px}
  .channel-inner{height:50px}
  .crumbs .current{max-width:180px}
}
@media (max-width:575.98px){
  body{font-size:15px}
  .article-title{font-size:clamp(24px,7vw,32px)}
  .article-body{padding:22px 18px;font-size:15px;line-height:1.82}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .topbar-actions .btn{width:100%}
  .topbar-actions{gap:8px}
  .cta-actions .btn,.entry-links .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A14; --bg-1:#0A101E; --bg-2:#05080F;
  --glass:rgba(255,255,255,.045); --glass-strong:rgba(255,255,255,.07);
  --line:rgba(140,190,255,.14); --line-hi:rgba(23,195,230,.42);
  --c-primary:#17C3E6; --c-primary-deep:#0E7FA8; --c-accent:#6C5CE7; --c-warm:#FFB547;
  --tx-1:#E9F0FB; --tx-2:#9FB0CC; --tx-3:#6C7C99; --tx-inv:#05080F;
  --ok:#2BD9A0; --warn:#FFB547; --err:#FF6B6B;
  --r-card:16px; --r-lg:20px; --r-btn:10px; --r-img:12px;
  --sh-card:0 10px 30px rgba(0,0,0,.38);
  --sh-hover:0 18px 46px rgba(0,0,0,.5);
  --glow:0 0 22px rgba(23,195,230,.42);
  --glow-hi:0 0 30px rgba(23,195,230,.58);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bs-body-bg:var(--bg-0); --bs-body-color:var(--tx-2);
  --bs-border-color:var(--line); --bs-primary:var(--c-primary);
  --bs-link-color:var(--c-primary); --bs-link-hover-color:#5BDBF5;
  --bs-border-radius:var(--r-btn); --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; font-family:var(--bs-font-sans-serif); color:var(--tx-2);
  font-size:16px; line-height:1.78; letter-spacing:.1px;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(760px 420px at 12% -6%, rgba(23,195,230,.16), transparent 62%),
    radial-gradient(680px 420px at 88% 4%, rgba(108,92,231,.16), transparent 64%),
    linear-gradient(rgba(140,190,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,190,255,.035) 1px, transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:#5BDBF5}
h1,h2,h3,h4{color:var(--tx-1);margin:0 0 14px;overflow-wrap:anywhere;word-break:break-word}
p{margin:0 0 16px;overflow-wrap:anywhere}
ul,ol{margin:0 0 16px;padding-left:20px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(23,195,230,.22);border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.4px;color:var(--c-primary);text-transform:none;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent))}
.section-title{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.3;margin-bottom:14px}
.section-lead{max-width:660px;color:var(--tx-2);font-size:16px;margin-bottom:0}
.title-grad{background:linear-gradient(90deg,#E9F0FB 60%,#17C3E6);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}

/* ============ 按钮 ============ */
.btn{--bs-btn-focus-box-shadow:0 0 0 4px rgba(23,195,230,.22);border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:12px 24px;height:48px;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:all 200ms var(--ease);border:1px solid transparent}
.btn-glow{background:linear-gradient(135deg,#17C3E6,#6C5CE7);color:var(--tx-inv);box-shadow:var(--glow);border:none}
.btn-glow:hover,.btn-glow:focus{color:var(--tx-inv);box-shadow:var(--glow-hi);transform:translateY(-2px)}
.btn-glow:active{transform:translateY(0)}
.btn-outline{background:transparent;border:1px solid var(--line);color:var(--tx-1)}
.btn-outline:hover,.btn-outline:focus{border-color:var(--line-hi);color:var(--tx-1);transform:translateY(-2px);background:var(--glass)}
.btn-link-arrow{background:none;border:none;color:var(--c-primary);font-weight:600;font-size:15px;padding:0;height:auto;display:inline-flex;align-items:center;gap:7px;box-shadow:none}
.btn-link-arrow:hover{color:#5BDBF5}
.btn-link-arrow svg{transition:transform 200ms var(--ease)}
.btn-link-arrow:hover svg{transform:translateX(3px)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.topbar{height:70px;display:flex;align-items:center;border-bottom:1px solid transparent;transition:background 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease)}
.site-header.is-scrolled .topbar{background:var(--glass-strong);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.topbar-inner{display:flex;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,#17C3E6,#6C5CE7);display:grid;place-items:center;box-shadow:0 0 18px rgba(23,195,230,.36)}
.brand-mark svg{width:20px;height:20px}
.brand-name{color:var(--tx-1);font-weight:700;font-size:17px;letter-spacing:.2px;white-space:nowrap}
.search-box{flex:1 1 auto;max-width:400px;display:flex;align-items:center;gap:8px;height:44px;padding:0 6px 0 14px;border-radius:12px;background:var(--bg-1);border:1px solid var(--line);transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.search-box:focus-within{border-color:var(--line-hi);box-shadow:0 0 0 4px rgba(23,195,230,.16)}
.search-box .s-icon{color:var(--tx-3);display:flex}
.search-box input{flex:1;background:transparent;border:none;outline:none;color:var(--tx-1);font-size:14px;height:100%;font-family:inherit}
.search-box input::placeholder{color:var(--tx-3)}
.search-btn{border:none;background:var(--glass-strong);color:var(--tx-1);font-size:13px;font-weight:600;padding:8px 14px;border-radius:8px;cursor:pointer;transition:all 200ms var(--ease);font-family:inherit}
.search-btn:hover{background:rgba(23,195,230,.2);color:#BFF3FF}
.topbar-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.topbar-actions .btn{height:42px;padding:10px 18px;font-size:14px}
.search-toggle{display:none;width:42px;height:42px;border-radius:10px;background:var(--glass);border:1px solid var(--line);color:var(--tx-1);place-items:center;cursor:pointer}
.channelbar{height:54px;border-bottom:1px solid var(--line);background:rgba(6,10,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.channel-inner{display:flex;align-items:center;gap:10px;height:100%;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-pill{flex:0 0 auto;display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;font-size:14px;font-weight:600;color:var(--tx-2);border:1px solid transparent;transition:all 200ms var(--ease);white-space:nowrap}
.channel-pill:hover{color:var(--tx-1);border-color:var(--line);background:var(--glass)}
.channel-pill.is-active{background:linear-gradient(135deg,rgba(23,195,230,.92),rgba(108,92,231,.92));color:#03151C;box-shadow:0 0 18px rgba(23,195,230,.36)}
.channel-pill.is-active:hover{color:#03151C}

/* ============ 面包屑 ============ */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);letter-spacing:.2px;flex-wrap:wrap}
.crumb a{color:var(--tx-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:rgba(140,190,255,.28)}
.crumb .cur{color:var(--tx-1)}

/* ============ 通栏标题区 ============ */
.page-hero{position:relative;padding:76px 0 68px;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(6,10,20,.94) 0%,rgba(6,10,20,.78) 52%,rgba(6,10,20,.92) 100%),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.62;z-index:-1}
.page-hero::after{content:"";position:absolute;left:-8%;top:-40%;width:620px;height:620px;background:radial-gradient(circle,rgba(23,195,230,.2),transparent 66%);z-index:-1;pointer-events:none}
.hero-grid{display:flex;align-items:flex-end;justify-content:space-between;gap:36px;flex-wrap:wrap}
.hero-main{max-width:720px}
.page-hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.18;letter-spacing:-.4px;margin-bottom:18px}
.page-hero .hero-desc{font-size:17px;color:var(--tx-2);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.2px}
.tag-cyan{background:rgba(23,195,230,.14);color:#7FE3F7;border:1px solid rgba(23,195,230,.28)}
.tag-purple{background:rgba(108,92,231,.16);color:#B9B2F7;border:1px solid rgba(108,92,231,.3)}
.tag-warm{background:rgba(255,181,71,.14);color:#FFD39A;border:1px solid rgba(255,181,71,.28)}
.hero-aside{flex:0 0 auto;text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:16px}

/* ============ 双列图文 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
.split + .split{margin-top:88px}
.split.reverse .split-media{order:2}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card);background:var(--glass)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease)}
.split-media:hover img{transform:scale(1.04)}
.split-media::after{content:"";position:absolute;inset:auto 0 0 0;height:38%;background:linear-gradient(180deg,transparent,rgba(6,10,20,.72));pointer-events:none}
.split-media .float-badge{position:absolute;left:18px;bottom:18px;z-index:2;display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(5,8,15,.72);border:1px solid var(--line-hi);color:var(--tx-1);backdrop-filter:blur(8px)}
.split-body h2{font-size:clamp(22px,2.3vw,30px);font-weight:700;line-height:1.34;margin-bottom:14px}
.split-body p{font-size:16px;color:var(--tx-2)}
.mini-list{list-style:none;padding:0;margin:20px 0 26px}
.mini-list li{position:relative;padding-left:26px;margin-bottom:12px;font-size:15px;color:var(--tx-2)}
.mini-list li::before{content:"";position:absolute;left:6px;top:11px;width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,#17C3E6,#6C5CE7);box-shadow:0 0 10px rgba(23,195,230,.5)}
.mini-list li strong{color:var(--tx-1);font-weight:600}

/* ============ 数据条 ============ */
.statbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat{position:relative;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);padding:26px 24px;box-shadow:var(--sh-card);overflow:hidden;transition:all 200ms var(--ease)}
.stat::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(23,195,230,.9),rgba(108,92,231,.7),transparent)}
.stat:hover{transform:translateY(-3px);border-color:var(--line-hi);box-shadow:var(--sh-hover)}
.stat-num{font-size:clamp(28px,3vw,40px);font-weight:800;line-height:1.1;color:var(--c-warm);letter-spacing:-.5px;display:flex;align-items:baseline;gap:4px}
.stat-num.cyan{color:var(--c-primary)}
.stat-num .unit{font-size:15px;font-weight:600;color:var(--tx-3)}
.stat-label{font-size:13px;color:var(--tx-3);letter-spacing:.2px;margin-top:10px}
.stat-note{font-size:14px;color:var(--tx-2);margin-top:6px}
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ============ 步骤流程 ============ */
.steps{position:relative;max-width:860px;margin:0 auto;padding-left:8px}
.steps::before{content:"";position:absolute;left:31px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,rgba(23,195,230,.6),rgba(108,92,231,.35),transparent)}
.step{position:relative;display:flex;gap:24px;padding:0 0 34px 0}
.step:last-child{padding-bottom:0}
.step-idx{flex:0 0 auto;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:15px;font-weight:800;color:#04121A;background:linear-gradient(135deg,#17C3E6,#6C5CE7);box-shadow:0 0 18px rgba(23,195,230,.34);z-index:1}
.step-body{flex:1;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);padding:22px 24px;transition:all 200ms var(--ease)}
.step-body:hover{border-color:var(--line-hi);box-shadow:var(--sh-hover)}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-body p{margin:0;font-size:15px;color:var(--tx-2)}
.step-meta{margin-top:12px;font-size:13px;color:var(--tx-3);display:flex;gap:14px;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:48px;align-items:start}
.faq-side h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;margin-bottom:14px}
.faq-side p{font-size:15px;color:var(--tx-2)}
.faq-side .side-card{margin-top:22px;border-radius:var(--r-card);background:var(--glass);border:1px solid var(--line);padding:22px;backdrop-filter:blur(14px)}
.faq-side .side-card strong{display:block;color:var(--tx-1);font-size:15px;margin-bottom:6px}
.faq-side .side-card span{font-size:14px;color:var(--tx-3)}
.accordion-item{background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:10px;overflow:hidden;backdrop-filter:blur(14px)}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{background:transparent;color:var(--tx-1);font-size:16px;font-weight:600;padding:18px 22px;border-radius:var(--r-card);box-shadow:none;position:relative;font-family:inherit;line-height:1.6}
.accordion-button:not(.collapsed){color:var(--tx-1);background:rgba(23,195,230,.07);box-shadow:none}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;background:linear-gradient(180deg,#17C3E6,#6C5CE7);border-radius:0 3px 3px 0;box-shadow:0 0 14px rgba(23,195,230,.6)}
.accordion-button::after{background-image:none;content:"";width:12px;height:12px;border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);transform:rotate(45deg);transition:transform 240ms var(--ease);margin-left:auto;flex:0 0 auto}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.accordion-button:focus{box-shadow:0 0 0 4px rgba(23,195,230,.14);border-color:transparent}
.accordion-body{padding:0 22px 22px;color:var(--tx-2);font-size:15px;line-height:1.8;border-top:1px solid var(--line);padding-top:16px;margin-top:0}

/* ============ CTA ============ */
.cta-band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-10%;top:-70%;width:640px;height:640px;background:radial-gradient(circle,rgba(108,92,231,.24),transparent 66%);pointer-events:none}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;padding:64px 0}
.cta-inner h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;margin-bottom:10px}
.cta-inner p{margin:0;color:var(--tx-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:68px 0 0;color:var(--tx-2)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.footer-brand p{font-size:14px;color:var(--tx-3);margin:16px 0 20px;max-width:320px;line-height:1.8}
.footer-social{display:flex;gap:12px}
.footer-social a{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--glass);border:1px solid var(--line);color:var(--tx-2);transition:all 200ms var(--ease)}
.footer-social a:hover{color:var(--c-primary);border-color:var(--line-hi);transform:translateY(-2px)}
.footer-social svg{width:18px;height:18px}
.footer-col h4{font-size:15px;color:var(--tx-1);margin-bottom:18px;font-weight:600}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:12px;font-size:14px;color:var(--tx-3)}
.footer-col a{color:var(--tx-3);font-size:14px}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--tx-3)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .split{gap:40px}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-media{order:0}
  .statbar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .search-box{display:none}
  .search-toggle{display:grid}
  .topbar-inner{gap:14px}
  .hero-aside{text-align:left;align-items:flex-start}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .page-hero{padding:52px 0 46px}
  .page-hero .hero-desc{font-size:16px}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .cta-inner{padding:52px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .split + .split{margin-top:56px}
  .step{gap:16px}
  .step-idx{width:42px;height:42px;border-radius:12px;font-size:14px}
  .steps::before{left:29px}
  .topbar-actions .btn-outline{display:none}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  .brand-name{font-size:15px}
  .statbar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .search-box{position:absolute;left:16px;right:16px;top:74px;max-width:none;display:none;z-index:20;background:var(--bg-1);box-shadow:var(--sh-card)}
  .search-box.is-open{display:flex}
  .accordion-button{font-size:15px;padding:16px 18px}
  .stat{padding:22px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}