/* roulang page: index */
:root{
  --bs-primary:#2FD4E8;
  --bs-body-bg:#070C14;
  --bs-body-color:#E9F2F8;
  --bs-border-color:rgba(255,255,255,0.08);
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bg-base:#070C14;
  --bg-sub:#0C1422;
  --panel:#121C2C;
  --primary:#2FD4E8;
  --primary-deep:#0F7C90;
  --primary-light:#8FE9F5;
  --coral:#FF7A4D;
  --ok:#3DD68C;
  --warn:#FFC24B;
  --error:#FF5C6C;
  --text:#E9F2F8;
  --text-2:#A6B8C8;
  --text-3:#6C8093;
  --text-disabled:#475A6B;
  --line:rgba(255,255,255,0.08);
  --glass:rgba(255,255,255,0.055);
  --glass-line:rgba(255,255,255,0.10);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,0.35);
  --shadow-2:0 14px 36px rgba(0,0,0,0.45);
  --glow:0 0 18px rgba(47,212,232,0.35);
  --font-num:"Inter","SF Pro",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-base);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.9) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.9) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:0.014;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    linear-gradient(114deg,transparent 18%,rgba(47,212,232,0.10) 38%,transparent 54%),
    linear-gradient(114deg,transparent 56%,rgba(47,212,232,0.055) 72%,transparent 88%),
    radial-gradient(900px 520px at 82% -8%,rgba(15,124,144,0.20),transparent 70%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out}
a:hover{color:var(--primary)}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:rgba(47,212,232,0.28);color:#fff}

.site-container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,12,20,0.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease-out,box-shadow .25s ease-out;
}
.site-header.scrolled{background:rgba(7,12,20,0.94);box-shadow:0 10px 30px rgba(0,0,0,0.42)}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:68px;
  transition:height .25s ease-out;
}
.site-header.scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:12px;
  color:var(--primary);
  background:linear-gradient(145deg,rgba(47,212,232,0.16),rgba(15,124,144,0.06));
  border:1px solid rgba(47,212,232,0.28);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-0.2px;color:var(--text);white-space:nowrap}
.brand-text:hover{color:var(--primary-light)}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-item{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
}
.nav-item::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;border-radius:2px;
  background:transparent;
  transition:background-color .2s ease-out,box-shadow .2s ease-out;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,0.04)}
.nav-item.active{color:var(--primary)}
.nav-item.active::after{background:var(--primary);box-shadow:0 0 10px rgba(47,212,232,0.75)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:0;padding:0;opacity:0;
  height:38px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,0.05);
  border:1px solid transparent;
  color:var(--text);
  transition:width .28s ease-out,opacity .2s ease-out,padding .28s ease-out,border-color .2s ease-out;
}
.nav-search.open input{width:200px;opacity:1;padding:0 12px;border-color:var(--line)}
.nav-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,212,232,0.15)}
.nav-search input::placeholder{color:var(--text-3)}
.search-btn{
  width:38px;height:38px;display:grid;place-items:center;
  border-radius:var(--radius-btn);
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,0.04);
  transition:color .2s ease-out,border-color .2s ease-out;
}
.search-btn:hover{color:var(--primary);border-color:rgba(47,212,232,0.4)}
.btn-glow{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;
  font-size:15px;font-weight:600;
  color:#04222A;
  background:linear-gradient(135deg,var(--primary-light),var(--primary));
  border-radius:var(--radius-btn);
  box-shadow:var(--glow),0 10px 28px rgba(0,0,0,0.45);
  transition:box-shadow .2s ease-out,transform .2s ease-out,filter .2s ease-out;
  white-space:nowrap;
}
.btn-glow:hover{
  color:#04222A;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 26px rgba(47,212,232,0.5),0 12px 30px rgba(0,0,0,0.5);
}
.btn-glow:active{transform:translateY(1px);box-shadow:0 0 10px rgba(47,212,232,0.25)}
.nav-toggle{
  width:40px;height:40px;display:grid;place-items:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(255,255,255,0.04);
}
.nav-toggle:hover{color:var(--primary);border-color:rgba(47,212,232,0.4)}
.mobile-panel{
  overflow:hidden;
  max-height:0;
  transition:max-height .32s ease-out;
  border-top:1px solid transparent;
  background:rgba(9,15,25,0.98);
}
.mobile-panel.open{max-height:420px;border-top-color:var(--line)}
.mobile-nav{display:flex;flex-direction:column;padding:10px 0 18px}
.mobile-nav a{
  padding:12px 4px;
  font-size:16px;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-nav a.active{color:var(--primary)}
.mobile-nav .btn-glow{margin-top:16px;justify-content:center;border-bottom:0}

/* ============ 通用板块 ============ */
main{position:relative;z-index:1}
.section{position:relative;padding:48px 0}
.section-sub{background:linear-gradient(180deg,rgba(12,20,34,0.0),rgba(12,20,34,0.85),rgba(12,20,34,0.0))}
.section-head{margin-bottom:32px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;letter-spacing:0.6px;
  color:var(--primary);
  padding:5px 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(47,212,232,0.30);
  background:rgba(47,212,232,0.08);
}
.section-title{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:650;
  line-height:1.3;
  letter-spacing:-0.3px;
  margin-top:14px;
}
.section-desc{color:var(--text-2);font-size:15px;margin-top:12px;max-width:640px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-size:14px;font-weight:600;
}
.link-arrow i{transition:transform .2s ease-out}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{position:relative;padding:64px 0 72px;overflow:hidden}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,12,20,0.2),rgba(7,12,20,0.9) 62%);
  pointer-events:none;
}
.hero-ripple{
  position:absolute;right:-140px;top:50%;transform:translateY(-50%);
  width:760px;height:760px;opacity:0.08;pointer-events:none;
}
.hero-ripple circle{fill:none;stroke:#2FD4E8;stroke-width:1.2}
.hero-grid{position:relative;z-index:2;align-items:center}
.hero-content{padding-right:12px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:500;
  color:var(--primary-light);
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(47,212,232,0.32);
  background:rgba(47,212,232,0.09);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px rgba(61,214,140,0.8)}
.hero-title{
  font-size:clamp(30px,4.2vw,46px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-0.5px;
  margin-top:20px;
}
.hero-title .hl{
  color:var(--primary-light);
  position:relative;
  white-space:nowrap;
}
.hero-title .hl::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-4px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--coral),rgba(255,122,77,0));
}
.hero-sub{color:var(--text-2);font-size:17px;margin-top:18px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;
  font-size:15px;font-weight:600;
  color:var(--primary);
  border:1px solid var(--primary);
  border-radius:var(--radius-btn);
  background:transparent;
  transition:background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-ghost:hover{
  color:var(--primary-light);
  background:rgba(47,212,232,0.10);
  border-color:var(--primary-light);
  transform:translateY(-1px);
  box-shadow:0 0 18px rgba(47,212,232,0.22);
}
.btn-ghost:active{transform:translateY(1px)}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:26px;font-size:13px;color:var(--text-3);
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px}
.hero-trust i{color:var(--primary-deep)}
.hero-trust .sep{color:var(--text-disabled)}
.hero-visual{position:relative}
.hero-media{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-2);
  background:var(--panel);
  min-height:360px;
}
.hero-media img{width:100%;height:100%;min-height:360px;object-fit:cover}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,0.85),rgba(7,12,20,0.35));
}
.status-card{
  position:absolute;left:20px;right:20px;bottom:20px;
  padding:18px 20px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-1);
}
.status-card h3{font-size:15px;font-weight:600;margin-bottom:12px}
.status-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 0;
  font-size:13px;
  color:var(--text-2);
  border-bottom:1px dashed rgba(255,255,255,0.08);
}
.status-row:last-of-type{border-bottom:0}
.tag-ok{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:500;
  color:var(--ok);
  padding:3px 10px;border-radius:var(--radius-pill);
  background:rgba(61,214,140,0.12);
  border:1px solid rgba(61,214,140,0.28);
}
.tag-ok::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--ok)}
.status-card .btn-ghost{margin-top:14px;font-size:13px;padding:8px 14px}
.float-card{
  position:absolute;right:-8px;top:-16px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(255,255,255,0.07);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.10),0 0 20px rgba(47,212,232,0.18),var(--shadow-1);
  font-size:12px;color:var(--text-2);
  max-width:190px;
}
.float-card strong{display:block;color:var(--primary-light);font-size:13px;font-weight:600;margin-bottom:2px}

/* ============ 卡片 ============ */
.card-base{
  position:relative;
  height:100%;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  overflow:hidden;
}
.card-base:hover{transform:translateY(-3px);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-2);border-color:rgba(47,212,232,0.28)}
.cover{position:relative;overflow:hidden;border-radius:12px;background:var(--panel)}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.cover::after{
  content:"";position:absolute;inset:0;
  background:rgba(47,212,232,0);transition:background-color .3s ease-out;
}
.card-base:hover .cover img,.card-row:hover .cover img{transform:scale(1.03)}
.card-base:hover .cover::after,.card-row:hover .cover::after{background:rgba(47,212,232,0.06)}
.badge-cat{
  display:inline-block;
  font-size:12px;font-weight:500;
  color:var(--primary);
  padding:3px 10px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(47,212,232,0.32);
  background:rgba(47,212,232,0.07);
}
.card-title{
  font-size:18px;font-weight:600;line-height:1.45;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.card-title:hover{color:var(--primary-light)}
.card-summary{
  color:var(--text-2);font-size:14px;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.meta-row{
  display:flex;align-items:center;gap:12px;
  font-size:12px;color:var(--text-3);
  margin-top:auto;
}
.meta-row .sep{color:var(--text-disabled)}
.card-item{padding:16px;display:flex;flex-direction:column;gap:12px}
.card-item .cover{aspect-ratio:16/9}
.card-item .meta-row{padding-top:6px}

.card-main{padding:24px;display:flex;flex-direction:column;gap:20px}
.card-main .cover{aspect-ratio:16/10}
.card-main .card-title{font-size:20px}
.main-badge{position:absolute;left:16px;top:16px;z-index:3}
.card-main .highlight-tag{
  position:absolute;right:16px;top:16px;z-index:3;
  font-size:12px;font-weight:600;color:#04222A;
  padding:3px 10px;border-radius:var(--radius-pill);
  background:var(--coral);
}

.card-row{
  display:flex;gap:18px;
  padding:18px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(47,212,232,0.26)}
.card-row .cover{flex:0 0 160px;width:160px;aspect-ratio:16/10}
.card-row .row-body{display:flex;flex-direction:column;gap:8px;min-width:0;flex:1}
.card-row .card-title{font-size:17px}
.row-index{
  font-family:var(--font-num);
  font-size:13px;font-weight:600;color:var(--primary);
  letter-spacing:0.5px;
}

/* ============ 目录组件 ============ */
.index-list{
  border-radius:var(--radius-card);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,0.03);
  overflow:hidden;
}
.index-item{
  display:flex;align-items:center;gap:18px;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease-out;
}
.index-item:last-child{border-bottom:0}
.index-item:hover{background:rgba(255,255,255,0.055)}
.index-num{
  font-family:var(--font-num);
  font-size:15px;font-weight:600;color:var(--primary);
  flex:0 0 34px;
}
.index-body{flex:1;min-width:0}
.index-body strong{display:block;font-size:16px;font-weight:600;line-height:1.5}
.index-body span{display:block;font-size:13px;color:var(--text-3);margin-top:2px}
.index-item i{color:var(--text-3);transition:transform .2s ease-out,color .2s ease-out}
.index-item:hover i{transform:translateX(4px);color:var(--primary)}

/* ============ CMS 列表 ============ */
.cms-card .cms-cover{flex:0 0 132px;width:132px}
.cms-empty{
  text-align:center;
  padding:52px 24px;
  border-radius:var(--radius-card);
  border:1px dashed rgba(255,255,255,0.14);
  background:rgba(255,255,255,0.03);
}
.cms-empty i{font-size:28px;color:var(--primary-deep);margin-bottom:14px;display:block}
.cms-empty p{color:var(--text-2);font-size:15px;margin-bottom:18px}

/* ============ 相关推荐 ============ */
.mini-card{
  display:flex;flex-direction:column;gap:12px;
  padding:14px;
  border-radius:14px;
  background:rgba(255,255,255,0.04);
  border:1px solid var(--line);
  height:100%;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(47,212,232,0.3);box-shadow:var(--shadow-1)}
.mini-card .cover{aspect-ratio:16/9}
.mini-card h3{font-size:15px;font-weight:600;line-height:1.5}
.mini-card h3:hover{color:var(--primary-light)}
.mini-card p{font-size:13px;color:var(--text-3);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  position:relative;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease-out;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--primary);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.open{border-color:rgba(47,212,232,0.3)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-q i{color:var(--primary);transition:transform .25s ease-out;flex-shrink:0}
.faq-item.open .faq-q i{transform:rotate(90deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease-out;
}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.open .faq-a{max-height:320px}

/* ============ 入口核对面板 ============ */
.check-panel{
  border-radius:var(--radius-card);
  border:1px solid var(--glass-line);
  background:linear-gradient(150deg,rgba(47,212,232,0.09),rgba(255,255,255,0.03) 55%);
  padding:26px;
}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0;
  border-bottom:1px dashed rgba(255,255,255,0.08);
}
.check-item:last-child{border-bottom:0}
.check-item .ico{
  flex:0 0 36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  color:var(--primary);
  background:rgba(47,212,232,0.10);
  border:1px solid rgba(47,212,232,0.22);
}
.check-item strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px}
.check-item span{font-size:14px;color:var(--text-2)}

/* ============ 分享条 ============ */
.share-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),var(--shadow-1);
}
.share-bar p{font-size:16px;font-weight:600}
.share-bar p small{display:block;font-size:13px;font-weight:400;color:var(--text-3);margin-top:4px}
.share-actions{display:flex;gap:10px}
.icon-btn{
  width:42px;height:42px;display:grid;place-items:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  color:var(--text-2);
  background:rgba(255,255,255,0.04);
  transition:color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(47,212,232,0.45);box-shadow:0 0 16px rgba(47,212,232,0.28);transform:translateY(-1px)}
.icon-btn.active{color:var(--coral);border-color:rgba(255,122,77,0.5)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:48px;
  padding:56px 0 0;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,34,0.4),rgba(7,12,20,0.95));
  z-index:1;
}
.footer-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:28px 24px}
.f-brand{grid-column:span 4}
.f-col{grid-column:span 3}
.f-col-sm{grid-column:span 2}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-text{font-size:14px;color:var(--text-2);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-3)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:40px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .domain{font-family:var(--font-num);color:var(--text-3)}

/* ============ 滚动动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease-out,transform .4s ease-out}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1399.98px){
  .hero-ripple{width:600px;height:600px;right:-200px}
}
@media (max-width:1199.98px){
  .brand-text{font-size:16px}
  .nav-menu{gap:0}
  .nav-item{padding:8px 9px;font-size:14px}
}
@media (max-width:991.98px){
  .section{padding:36px 0}
  .hero{padding:40px 0 48px}
  .hero-content{padding-right:0}
  .hero-media,.hero-media img{min-height:280px}
  .float-card{right:12px;top:12px}
  .footer-grid{gap:28px 20px}
  .f-brand{grid-column:span 12}
  .f-col{grid-column:span 6}
  .f-col-sm{grid-column:span 6}
  body::after{display:none}
}
@media (max-width:767.98px){
  .section{padding:28px 0}
  .card-row{flex-direction:column}
  .card-row .cover{flex:none;width:100%;aspect-ratio:16/9}
  .cms-card .cms-cover{width:100%;flex:none}
  .hero-title{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:16px}
  .btn-glow,.btn-ghost{width:100%;justify-content:center}
  .hero-actions{gap:12px}
  .status-card{position:relative;left:0;right:0;bottom:0;margin:-70px 14px 14px}
  .share-bar{padding:18px}
  .share-actions{width:100%;justify-content:flex-start}
}
@media (max-width:575.98px){
  .site-container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:15px}
  .section-title{font-size:23px}
  .card-main{padding:18px}
  .f-col,.f-col-sm{grid-column:span 12}
  .index-item{padding:14px 16px;gap:12px}
  .faq-q{padding:16px 18px;font-size:16px}
  .faq-a-inner{padding:0 18px 18px}
}

/* roulang page: article */
:root{
  --bg-0:#070C14;
  --bg-1:#0C1422;
  --bg-2:#121C2C;
  --primary:#2FD4E8;
  --primary-dark:#0F7C90;
  --primary-light:#8FE9F5;
  --accent:#FF7A4D;
  --ok:#3DD68C;
  --warn:#FFC24B;
  --err:#FF5C6C;
  --text:#E9F2F8;
  --text-2:#A6B8C8;
  --text-3:#6C8093;
  --text-4:#475A6B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.10);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,.35);
  --shadow-lg:0 14px 36px rgba(0,0,0,.45);
  --glow:0 0 18px rgba(47,212,232,.35), 0 10px 28px rgba(0,0,0,.45);
  --glow-hover:0 0 25px rgba(47,212,232,.5), 0 14px 32px rgba(0,0,0,.5);
  --container:1240px;
  --sect:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-primary:#2FD4E8;
  --bs-body-bg:#070C14;
  --bs-body-color:#E9F2F8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-link-color:#8FE9F5;
  --bs-link-hover-color:#2FD4E8;
  --bs-font-sans-serif:var(--font-cn);
  --bs-border-radius:12px;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;}
a:hover{color:var(--primary-light);}
button,input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.bg-decor{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
}
.bg-decor::before,
.bg-decor::after{
  content:"";
  position:absolute;
  left:-20%;
  width:140%;
  height:340px;
  background:linear-gradient(120deg,rgba(47,212,232,.10),rgba(47,212,232,0) 62%);
  transform:rotate(-11deg);
}
.bg-decor::before{top:8%;}
.bg-decor::after{top:62%;opacity:.7;background:linear-gradient(120deg,rgba(255,122,77,.07),rgba(47,212,232,0) 55%);}

.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,12,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:background-color .25s ease-out;
}
.site-header.scrolled{background:rgba(7,12,20,.92);}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  height:68px;
  transition:height .25s ease-out;
}
.site-header.scrolled .header-inner{height:60px;}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{width:34px;height:34px;color:var(--primary);display:inline-flex;align-items:center;justify-content:center;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text);
  white-space:nowrap;
}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:10px;}
.nav-item{
  position:relative;
  padding:8px 12px;
  border-radius:8px;
  font-size:15px;
  color:var(--text-2);
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-item.active{color:var(--primary);}
.nav-item.active::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:1px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(47,212,232,.6);
}

.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;}

.search-box{
  display:flex;
  align-items:center;
  height:40px;
  padding:0 6px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  transition:border-color .2s ease-out,background-color .2s ease-out;
}
.search-box.open{border-color:rgba(47,212,232,.45);background:rgba(255,255,255,.05);}
.search-toggle{
  width:30px;height:30px;
  border:0;background:transparent;
  color:var(--text-2);
  cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  transition:color .2s ease-out;
}
.search-toggle:hover{color:var(--primary);}
.search-input{
  width:0;
  opacity:0;
  padding:0;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  transition:width .25s ease-out,opacity .25s ease-out,padding .25s ease-out;
}
.search-input::placeholder{color:var(--text-4);}
.search-input:focus{outline:none;}
.search-box.open .search-input{width:176px;opacity:1;padding:0 10px 0 2px;}

.btn-glow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border:0;
  border-radius:var(--r-btn);
  background:linear-gradient(180deg,#4FE0F0,#2FD4E8);
  color:#05222A !important;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  box-shadow:var(--glow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,filter .2s ease-out;
}
.btn-glow:hover{transform:translateY(-1px);box-shadow:var(--glow-hover);filter:brightness(1.08);}
.btn-glow:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(0,0,0,.4);}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border:1px solid rgba(47,212,232,.5);
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--primary-light);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:background-color .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.btn-ghost:hover{background:rgba(47,212,232,.10);color:var(--primary-light);transform:translateY(-1px);border-color:var(--primary);}
.btn-ghost:active{transform:translateY(1px);}

.nav-toggle{
  margin-left:auto;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--glass);
  color:var(--text);
  cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(47,212,232,.5);color:var(--primary);}

.mobile-menu{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease-out;
  border-top:0 solid var(--line);
}
.mobile-menu.open{max-height:340px;border-top:1px solid var(--line);}
.mobile-inner{padding:14px 24px 20px;display:flex;flex-direction:column;gap:8px;}
.m-item{
  padding:11px 14px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  color:var(--text-2);
  font-size:15px;
}
.m-item:hover{background:rgba(255,255,255,.05);color:var(--text);}
.m-item.active{color:var(--primary);border-color:rgba(47,212,232,.35);background:rgba(47,212,232,.07);}
.m-cta{
  margin-top:6px;
  text-align:center;
  padding:12px 16px;
  border-radius:var(--r-btn);
  background:linear-gradient(180deg,#4FE0F0,#2FD4E8);
  color:#05222A !important;
  font-weight:700;
  box-shadow:var(--glow);
}

/* ---------- main ---------- */
.site-main{padding:36px 0 0;position:relative;z-index:1;}

.breadcrumb-bar{padding:6px 0 22px;}
.crumb{display:flex;align-items:center;flex-wrap:nowrap;gap:10px;font-size:13.5px;color:var(--text-3);min-width:0;}
.crumb li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.crumb li + li::before{content:"/";margin-right:10px;color:var(--text-4);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .current{color:var(--text-4);max-width:52%;}

.article-head{padding-bottom:22px;}
.badge-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border:1px solid rgba(47,212,232,.45);
  border-radius:var(--r-pill);
  color:var(--primary);
  background:rgba(47,212,232,.07);
  font-size:12px;
  font-weight:500;
  letter-spacing:.4px;
}
.article-title{
  margin:16px 0 0;
  font-size:clamp(26px,3.4vw,40px);
  font-weight:700;
  line-height:1.32;
  letter-spacing:-.5px;
  color:var(--text);
}
.article-meta{
  margin-top:16px;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  font-size:14px;
  color:var(--text-3);
}
.article-meta i{color:var(--primary-dark);margin-right:5px;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-4);}

.article-cover{
  margin:0 0 34px;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow);
  background:var(--bg-2);
}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;}

.read-panel{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:28px 30px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}

.article-body{
  font-size:17px;
  line-height:1.95;
  color:var(--text-2);
  max-width:820px;
}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  font-size:clamp(20px,2vw,26px);
  font-weight:650;
  line-height:1.4;
  color:var(--text);
  margin:1.9em 0 .85em;
  padding-left:14px;
  border-left:3px solid var(--primary);
}
.article-body h3{
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  color:var(--text);
  margin:1.6em 0 .6em;
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  color:var(--text);
  margin:1.4em 0 .5em;
}
.article-body ul,
.article-body ol{padding-left:20px;margin:0 0 1.15em;}
.article-body ul li{list-style:disc;margin-bottom:.5em;}
.article-body ol li{list-style:decimal;margin-bottom:.5em;}
.article-body a{color:var(--primary-light);border-bottom:1px solid rgba(47,212,232,.35);}
.article-body a:hover{color:var(--primary);border-bottom-color:var(--primary);}
.article-body img{
  width:100%;
  border-radius:12px;
  margin:1.5em auto;
  box-shadow:var(--shadow);
}
.article-body figure{margin:1.5em 0;}
.article-body figcaption{
  text-align:center;
  font-size:13px;
  color:var(--text-3);
  margin-top:10px;
}
.article-body blockquote{
  margin:1.5em 0;
  padding:16px 20px;
  border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;
  background:var(--glass);
  border-top:1px solid var(--glass-line);
  border-right:1px solid var(--glass-line);
  border-bottom:1px solid var(--glass-line);
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:rgba(47,212,232,.08);color:var(--text);font-weight:600;}
.article-body code{
  font-family:var(--font-num);
  font-size:14px;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(47,212,232,.10);
  color:var(--primary-light);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

.empty-state{
  text-align:center;
  padding:56px 24px;
  border:1px dashed var(--glass-line);
  border-radius:var(--r-card);
  background:var(--glass);
}
.empty-state .empty-icon{
  width:56px;height:56px;
  margin:0 auto 18px;
  border-radius:50%;
  border:1px solid rgba(47,212,232,.35);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
}
.empty-state h3{font-size:19px;font-weight:650;color:var(--text);margin-bottom:8px;}
.empty-state p{font-size:15px;color:var(--text-3);margin-bottom:20px;}

/* ---------- aside ---------- */
.aside-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;}
.side-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.side-title{
  font-size:15px;
  font-weight:650;
  color:var(--text);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-title::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(47,212,232,.6);}
.side-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 12px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  background:rgba(255,255,255,.03);
  font-size:14.5px;
  color:var(--text-2);
  margin-bottom:8px;
}
.side-link:last-child{margin-bottom:0;}
.side-link:hover{color:var(--text);border-color:rgba(47,212,232,.35);background:rgba(47,212,232,.07);}
.side-link i{color:var(--primary);font-size:12px;transition:transform .2s ease-out;}
.side-link:hover i{transform:translateX(4px);}

.check-list li{
  position:relative;
  padding-left:22px;
  font-size:14px;
  color:var(--text-2);
  margin-bottom:10px;
  line-height:1.7;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;height:8px;
  border-radius:3px;
  background:rgba(47,212,232,.18);
  border:1px solid rgba(47,212,232,.6);
}
.side-text{font-size:13.5px;color:var(--text-3);margin-bottom:14px;line-height:1.7;}
.side-actions{display:flex;gap:10px;flex-wrap:wrap;}
.btn-ghost-sm{
  flex:1 1 auto;
  padding:9px 14px;
  border:1px solid rgba(47,212,232,.45);
  border-radius:var(--r-btn);
  background:transparent;
  color:var(--primary-light);
  font-size:13.5px;
  font-weight:600;
  cursor:pointer;
  transition:background-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-ghost-sm:hover{background:rgba(47,212,232,.10);transform:translateY(-1px);box-shadow:0 0 14px rgba(47,212,232,.22);}
.btn-ghost-sm:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost-sm.done{color:var(--ok);border-color:rgba(61,214,140,.5);background:rgba(61,214,140,.09);}

/* ---------- sections ---------- */
.section{padding-top:var(--sect);}
.section-head{margin-bottom:32px;}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:1.4px;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7;}
.section-title{font-size:clamp(24px,2.6vw,32px);font-weight:650;line-height:1.3;color:var(--text);letter-spacing:-.3px;}
.section-sub{margin-top:10px;font-size:15px;color:var(--text-3);max-width:640px;}

.reco-list{display:flex;flex-direction:column;gap:16px;}
.row-card{
  display:flex;
  align-items:center;
  gap:20px;
  padding:18px 20px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.row-card:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-lg);border-color:rgba(47,212,232,.28);}
.row-thumb{
  flex:0 0 160px;
  width:160px;
  aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  background:var(--bg-2);
  position:relative;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.row-card:hover .row-thumb img{transform:scale(1.04);}
.row-thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.15),rgba(7,12,20,.45));
  opacity:0;
  transition:opacity .25s ease-out;
}
.row-card:hover .row-thumb::after{opacity:1;background:linear-gradient(180deg,rgba(47,212,232,.06),rgba(7,12,20,.35));}
.row-body{min-width:0;}
.chip{
  display:inline-block;
  padding:3px 10px;
  border:1px solid rgba(47,212,232,.4);
  border-radius:var(--r-pill);
  color:var(--primary);
  font-size:12px;
  font-weight:500;
  margin-bottom:10px;
}
.row-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--text);}
.row-card:hover .row-title{color:var(--primary-light);}
.row-desc{margin-top:8px;font-size:14px;color:var(--text-3);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.row-meta{margin-top:10px;display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--text-4);}
.row-meta .arrow{color:var(--primary);transition:transform .2s ease-out;}
.row-card:hover .row-meta .arrow{transform:translateX(4px);}

.cta-band{
  margin-top:var(--sect);
  padding:38px 40px;
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:
    linear-gradient(120deg,rgba(47,212,232,.12),rgba(7,12,20,0) 62%),
    var(--glass);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:650;color:var(--text);line-height:1.35;}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-3);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-arrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--primary-light);
  padding:10px 4px;
}
.btn-arrow i{transition:transform .2s ease-out;}
.btn-arrow:hover{color:var(--primary);}
.btn-arrow:hover i{transform:translateX(4px);}

.share-bar{
  margin-top:32px;
  padding:18px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}
.share-bar .share-text{font-size:14.5px;color:var(--text-2);}
.share-bar .share-text strong{color:var(--text);font-weight:600;}
.share-tools{display:flex;gap:10px;}

.icon-btn{
  width:40px;height:40px;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;
  transition:color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(47,212,232,.5);box-shadow:0 0 16px rgba(47,212,232,.28);transform:translateY(-1px);}
.icon-btn.done{color:var(--ok);border-color:rgba(61,214,140,.5);}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--sect);
  padding-top:64px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,34,.55),rgba(7,12,20,.96));
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 3fr 3fr 2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:16px;}
.footer-text{font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:320px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-title{
  font-size:14px;
  font-weight:650;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.3px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:13.5px;color:var(--text-3);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;
  padding:20px 0;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-4);
}
.footer-bottom .domain{font-family:var(--font-num);letter-spacing:.6px;color:var(--text-3);}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{opacity:1;transform:none;transition:opacity .4s ease-out,transform .4s ease-out;}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .search-box.open .search-input{width:140px;}
}
@media (max-width:991px){
  :root{--sect:72px;}
  .aside-sticky{position:static;margin-top:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .read-panel{padding:22px 20px;}
  .cta-band{padding:30px 24px;}
}
@media (max-width:767px){
  :root{--sect:56px;}
  .bg-decor::before,.bg-decor::after{display:none;}
  .article-cover img{aspect-ratio:16/9;}
  .row-card{flex-direction:column;align-items:stretch;gap:14px;}
  .row-thumb{flex:0 0 auto;width:100%;aspect-ratio:16/9;}
  .crumb .current{max-width:42%;}
  .share-bar{position:sticky;bottom:10px;z-index:30;}
}
@media (max-width:575px){
  .site-container{padding:0 18px;}
  .brand-text{font-size:15px;}
  .article-title{font-size:24px;}
  .cta-band h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-glow,
  .cta-actions .btn-ghost{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .read-panel{padding:18px 16px;border-radius:14px;}
  .article-body{font-size:16px;line-height:1.9;}
}

/* roulang page: category1 */
:root{
  --bg-0:#070C14;
  --bg-1:#0C1422;
  --panel:#121C2C;
  --primary:#2FD4E8;
  --primary-deep:#0F7C90;
  --primary-light:#8FE9F5;
  --accent:#FF7A4D;
  --ok:#3DD68C;
  --warn:#FFC24B;
  --err:#FF5C6C;
  --text:#E9F2F8;
  --text-2:#A6B8C8;
  --text-3:#6C8093;
  --text-dim:#475A6B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.10);
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(0,0,0,.35);
  --shadow-2:0 14px 36px rgba(0,0,0,.45);
  --glow:0 0 18px rgba(47,212,232,.35);
  --glow-strong:0 0 25px rgba(47,212,232,.49);
  --container:1240px;
  --gap-section:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-primary:#2FD4E8;
  --bs-body-bg:#070C14;
  --bs-body-color:#E9F2F8;
  --bs-border-color:rgba(255,255,255,.08);
  --bs-border-radius:16px;
  --bs-link-color:#8FE9F5;
  --bs-link-hover-color:#2FD4E8;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(115deg,transparent 18%,rgba(47,212,232,.08) 36%,transparent 52%),
    linear-gradient(102deg,transparent 56%,rgba(47,212,232,.05) 70%,transparent 86%);
}

img{max-width:100%;height:auto;display:block;}
a{color:var(--primary-light);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}

h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.2px;}

a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}

.site-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(7,12,20,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}

.site-header.is-scrolled{
  background:rgba(7,12,20,.94);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}

.header-inner{
  height:68px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  transition:height .25s ease;
}

.site-header.is-scrolled .header-inner{height:60px;}

.header-left{
  display:flex;
  align-items:center;
  gap:32px;
  min-width:0;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:700;
  font-size:17px;
  letter-spacing:.2px;
  white-space:nowrap;
}

.brand:hover{color:var(--text);}

.brand-mark{
  width:34px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  border-radius:12px;
  background:rgba(47,212,232,.10);
  border:1px solid rgba(47,212,232,.28);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  flex:0 0 auto;
}

.brand-mark svg{width:24px;height:24px;}

.nav-menu{
  display:flex;
  align-items:center;
  gap:26px;
}

.nav-menu .nav-item{
  position:relative;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
  padding:6px 0;
  white-space:nowrap;
}

.nav-menu .nav-item:hover{color:var(--text);}

.nav-menu .nav-item.active{
  color:var(--primary);
  text-shadow:0 0 12px rgba(47,212,232,.35);
}

.nav-menu .nav-item.active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 10px rgba(47,212,232,.75);
}

.header-right{
  display:flex;
  align-items:center;
  gap:14px;
  flex:0 0 auto;
}

.search-box{
  display:flex;
  align-items:center;
  gap:0;
  height:40px;
  padding:0 4px;
  border:1px solid transparent;
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}

.search-box.is-open{
  border-color:rgba(47,212,232,.55);
  box-shadow:0 0 0 3px rgba(47,212,232,.12);
  background:rgba(47,212,232,.05);
}

.search-toggle{
  width:32px;
  height:32px;
  border:0;
  background:transparent;
  color:var(--text-2);
  border-radius:8px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:color .2s ease;
}

.search-toggle:hover{color:var(--primary);}

.search-input{
  width:0;
  opacity:0;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
  padding:0;
  transition:width .25s ease,opacity .25s ease,padding .25s ease;
}

.search-box.is-open .search-input{
  width:170px;
  opacity:1;
  padding:0 8px 0 2px;
}

.search-input::placeholder{color:var(--text-dim);}
.search-input:focus{outline:none;}

.btn-main{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border:0;
  border-radius:var(--radius-btn);
  background:linear-gradient(180deg,#4CE3F3,#1FB6CB);
  color:#04161D;
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  cursor:pointer;
  box-shadow:var(--glow),0 10px 28px rgba(0,0,0,.45);
  transition:transform .2s ease-out,box-shadow .2s ease-out,filter .2s ease-out;
}

.btn-main:hover{
  color:#04161D;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:var(--glow-strong),0 12px 30px rgba(0,0,0,.5);
}

.btn-main:active{
  transform:translateY(1px);
  box-shadow:0 4px 12px rgba(0,0,0,.4);
}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(47,212,232,.5);
  background:transparent;
  color:var(--primary-light);
  font-size:15px;
  font-weight:500;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease,transform .2s ease-out,color .2s ease;
}

.btn-ghost:hover{
  color:var(--primary-light);
  background:rgba(47,212,232,.10);
  border-color:var(--primary);
  transform:translateY(-1px);
}

.btn-ghost:active{transform:translateY(1px);}

.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
  background:none;
  border:0;
  padding:0;
  cursor:pointer;
  transition:color .2s ease;
}

.btn-text i{transition:transform .2s ease;}
.btn-text:hover{color:var(--primary-light);}
.btn-text:hover i{transform:translateX(4px);}

.nav-toggle{
  width:42px;
  height:42px;
  border-radius:var(--radius-btn);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:color .2s ease,border-color .2s ease;
}

.nav-toggle:hover{color:var(--primary);border-color:rgba(47,212,232,.5);}

.mobile-nav{
  border-top:1px solid var(--line);
  background:rgba(9,15,26,.97);
  backdrop-filter:blur(14px);
}

.mobile-nav-inner{
  padding-top:14px;
  padding-bottom:22px;
  display:flex;
  flex-direction:column;
  gap:4px;
}

.m-nav-link{
  display:block;
  padding:12px 4px;
  color:var(--text-2);
  font-size:15px;
  border-bottom:1px solid var(--line);
}

.m-nav-link.active{color:var(--primary);}
.m-nav-link:hover{color:var(--primary-light);}

.mobile-search{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:14px;
  padding:0 14px;
  height:44px;
  border-radius:var(--radius-btn);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);
  color:var(--text-3);
}

.mobile-search input{
  flex:1;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:14px;
}

.mobile-search input:focus{outline:none;}

/* ---------- 页头 ---------- */
.page-head{
  padding:52px 0 0;
  position:relative;
  z-index:1;
}

.page-head::before{
  content:"";
  position:absolute;
  top:-140px;
  right:-60px;
  width:520px;
  height:520px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,232,.13) 0%,rgba(47,212,232,0) 68%);
  pointer-events:none;
}

.page-head-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:44px;
  align-items:center;
  padding-bottom:56px;
  border-bottom:1px solid var(--line);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(47,212,232,.35);
  background:rgba(47,212,232,.09);
  color:var(--primary-light);
  font-size:12px;
  font-weight:500;
  letter-spacing:.6px;
  margin-bottom:18px;
}

.eyebrow .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 8px rgba(61,214,140,.85);
}

.page-head h1{
  font-size:clamp(30px,4.2vw,46px);
  line-height:1.25;
  letter-spacing:-.5px;
  font-weight:700;
  margin-bottom:18px;
}

.page-head h1 .hl{
  color:var(--primary);
  text-shadow:0 0 24px rgba(47,212,232,.3);
}

.page-head h1 .sep{
  color:var(--text-dim);
  font-weight:400;
  padding:0 6px;
}

.page-lead{
  color:var(--text-2);
  font-size:16px;
  max-width:620px;
  margin-bottom:26px;
}

.head-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:26px;
}

.head-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  color:var(--text-3);
  font-size:13px;
}

.head-meta span.sep{color:var(--text-dim);}

.ph-visual{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-2),inset 0 1px 0 rgba(255,255,255,.08);
  background:var(--bg-1);
}

.ph-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  display:block;
}

.ph-visual::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.35) 0%,rgba(7,12,20,.82) 100%);
  pointer-events:none;
}

.ph-note{
  position:absolute;
  left:18px;
  right:18px;
  bottom:18px;
  z-index:2;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(18,28,44,.72);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  font-size:14px;
  color:var(--text);
  display:flex;
  flex-direction:column;
  gap:4px;
}

.ph-note .status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:600;
}

.ph-note .status .dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px rgba(61,214,140,.9);
}

.ph-note .sub{
  color:var(--text-3);
  font-size:12.5px;
}

/* ---------- 板块通用 ---------- */
.section{
  padding-top:var(--gap-section);
  position:relative;
  z-index:1;
}

.section-title{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;
  font-weight:650;
  margin-bottom:12px;
}

.section-sub{
  color:var(--text-2);
  font-size:15px;
  max-width:640px;
}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:36px;
}

/* ---------- 标签行 ---------- */
.filter-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:34px;
}

.filter-label{
  color:var(--text-3);
  font-size:13px;
  margin-right:4px;
}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--glass-line);
  color:var(--text-2);
  font-size:13px;
  font-weight:500;
  background:rgba(255,255,255,.03);
  transition:color .2s ease,border-color .2s ease,background .2s ease,transform .2s ease;
}

.chip:hover{
  color:var(--primary-light);
  border-color:rgba(47,212,232,.5);
  transform:translateY(-1px);
}

.chip.active{
  background:var(--primary);
  border-color:var(--primary);
  color:#04161D;
  box-shadow:0 0 16px rgba(47,212,232,.35);
}

/* ---------- 卡片 ---------- */
.card-glass{
  position:relative;
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-1);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}

.card-glass:hover{
  transform:translateY(-4px);
  border-color:rgba(47,212,232,.35);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-2);
}

.card-body-inner{
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
}

.card-media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--bg-1);
  line-height:0;
}

.card-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .35s ease;
}

.card-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(47,212,232,0);
  transition:background .3s ease;
  pointer-events:none;
}

.card-glass:hover .card-media img{transform:scale(1.03);}
.card-glass:hover .card-media::after{background:rgba(47,212,232,.06);}

.card-main .card-media img{aspect-ratio:16/10;}

.badge-cat{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(47,212,232,.42);
  color:var(--primary);
  background:rgba(47,212,232,.07);
  font-size:12px;
  font-weight:500;
  letter-spacing:.3px;
  align-self:flex-start;
}

.card-title-link{
  display:block;
  color:var(--text);
  font-size:19px;
  font-weight:600;
  line-height:1.45;
  transition:color .2s ease;
}

.card-title-link:hover{color:var(--primary-light);}

.card-main .card-title-link{font-size:23px;}

.card-desc{
  color:var(--text-2);
  font-size:14px;
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

.card-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  color:var(--text-3);
  font-size:12.5px;
}

.card-foot .arrow{transition:transform .2s ease;}
.card-glass:hover .card-foot .arrow{transform:translateX(4px);color:var(--primary);}

.card-mini .card-body-inner{padding:16px 18px 18px;gap:8px;}
.card-mini .card-title-link{font-size:16px;}
.card-mini .card-desc{font-size:13px;-webkit-line-clamp:2;}

/* ---------- 说明区 ---------- */
.editorial p{
  color:var(--text-2);
  font-size:16px;
  line-height:1.85;
}

.editorial .lead-strong{
  color:var(--text);
  font-size:17px;
}

.check-list{
  margin-top:22px;
  display:grid;
  gap:12px;
}

.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:14px 16px;
  border-radius:12px;
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.7;
}

.check-list li i{
  color:var(--primary);
  margin-top:4px;
  font-size:13px;
}

.check-list li strong{color:var(--text);font-weight:600;}

/* ---------- 相关推荐 ---------- */
.mini-card{
  display:block;
  height:100%;
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);
  transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
}

.mini-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,212,232,.4);
  background:rgba(47,212,232,.06);
  box-shadow:var(--shadow-1);
}

.mini-card .num{
  font-family:var(--font-num);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
  display:block;
  margin-bottom:8px;
}

.mini-card h3{
  font-size:16px;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  margin-bottom:8px;
}

.mini-card:hover h3{color:var(--primary-light);}

.mini-card p{
  color:var(--text-3);
  font-size:13px;
  line-height:1.65;
  margin:0;
}

/* ---------- FAQ ---------- */
.faq-wrap{
  max-width:860px;
  margin:0 auto;
}

.accordion.faq-accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:transparent;
  --bs-accordion-border-radius:14px;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-active-bg:rgba(47,212,232,.05);
  --bs-accordion-active-color:var(--primary-light);
}

.faq-accordion .accordion-item{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}

.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left:3px solid var(--primary);
}

.faq-accordion .accordion-button{
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  padding:20px 22px;
  border-radius:0;
  box-shadow:none;
}

.faq-accordion .accordion-button:not(.collapsed){
  color:var(--primary-light);
  background:rgba(47,212,232,.05);
  box-shadow:none;
}

.faq-accordion .accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--primary);
  outline-offset:-2px;
}

.faq-accordion .accordion-button::after{
  flex:0 0 auto;
  width:14px;
  height:14px;
  margin-left:16px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232FD4E8'%3E%3Cpath d='M8 11.6 1.1 4.7 2.5 3.3 8 8.8l5.5-5.5 1.4 1.4z'/%3E%3C/svg%3E");
  background-size:14px 14px;
  transition:transform .25s ease;
}

.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-90deg);}

.faq-accordion .accordion-body{
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  padding:0 22px 22px;
}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  padding:26px 28px;
  border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(47,212,232,.12),rgba(255,255,255,.045));
  border:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-1);
}

.cta-copy h2{
  font-size:20px;
  font-weight:650;
  margin-bottom:6px;
}

.cta-copy p{
  color:var(--text-2);
  font-size:14px;
  margin:0;
}

.cta-actions{
  display:flex;
  align-items:center;
  gap:12px;
}

.icon-btn{
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--radius-btn);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.05);
  color:var(--text-2);
  font-size:15px;
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease,background .2s ease;
}

.icon-btn:hover{
  color:var(--primary-light);
  border-color:rgba(47,212,232,.5);
  background:rgba(47,212,232,.10);
  box-shadow:0 0 16px rgba(47,212,232,.28);
  transform:translateY(-1px);
}

.icon-btn:active{transform:translateY(1px);}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--gap-section);
  padding-top:64px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,20,34,.6),rgba(7,12,20,.95));
  position:relative;
  z-index:1;
}

.footer-grid{
  display:grid;
  grid-template-columns:4fr 3fr 3fr 2fr;
  gap:36px;
  padding-bottom:44px;
}

.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:700;
  font-size:17px;
  margin-bottom:14px;
}

.footer-text{
  color:var(--text-3);
  font-size:14px;
  line-height:1.75;
  max-width:340px;
  margin-bottom:18px;
}

.footer-social{
  display:flex;
  gap:10px;
}

.footer-title{
  color:var(--text);
  font-size:14px;
  font-weight:600;
  letter-spacing:.4px;
  margin-bottom:16px;
}

.footer-links{
  display:flex;
  flex-direction:column;
  gap:11px;
}

.footer-links a{
  color:var(--text-3);
  font-size:14px;
  transition:color .2s ease,padding-left .2s ease;
}

.footer-links a:hover{
  color:var(--primary-light);
  padding-left:3px;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  color:var(--text-dim);
  font-size:13px;
}

.footer-bottom .domain{
  font-family:var(--font-num);
  letter-spacing:.5px;
  color:var(--text-3);
}

/* ---------- 动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .4s ease,transform .4s ease;
}

.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--gap-section:72px;}
  .nav-menu{gap:20px;}
  .search-box.is-open .search-input{width:130px;}
}

@media (max-width:991.98px){
  .page-head-grid{
    grid-template-columns:1fr;
    gap:32px;
  }
  .ph-visual{max-width:560px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .header-inner{height:60px;gap:16px;}
}

@media (max-width:767.98px){
  :root{--gap-section:56px;}
  body::after{display:none;}
  .site-container{padding:0 18px;}
  .page-head{padding-top:40px;}
  .page-head-grid{padding-bottom:40px;}
  .card-main .card-title-link{font-size:20px;}
  .cta-bar{padding:22px 20px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:575.98px){
  .page-head h1{font-size:28px;}
  .head-actions{flex-direction:column;align-items:stretch;}
  .head-actions .btn-main,
  .head-actions .btn-ghost{width:100%;}
  .card-body-inner{padding:16px 16px 18px;}
  .cta-actions .icon-btn{flex:1 1 0;}
  .section-title{font-size:22px;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#070C14;
  --bg-1:#0C1422;
  --bg-2:#121C2C;
  --primary:#2FD4E8;
  --primary-deep:#0F7C90;
  --primary-soft:#8FE9F5;
  --accent:#FF7A4D;
  --ok:#3DD68C;
  --warn:#FFC24B;
  --err:#FF5C6C;
  --txt:#E9F2F8;
  --txt-2:#A6B8C8;
  --txt-3:#6C8093;
  --txt-4:#475A6B;
  --line:rgba(255,255,255,0.08);
  --glass:rgba(255,255,255,0.055);
  --glass-line:rgba(255,255,255,0.10);
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(0,0,0,0.35);
  --shadow-hover:0 14px 36px rgba(0,0,0,0.45);
  --glow:0 0 18px rgba(47,212,232,0.35), 0 10px 28px rgba(0,0,0,0.45);
  --nav-h:68px;
  --container:1240px;
  --gap-section:96px;

  --bs-body-bg:#070C14;
  --bs-body-color:#E9F2F8;
  --bs-border-color:rgba(255,255,255,0.08);
  --bs-primary:#2FD4E8;
  --bs-primary-rgb:47,212,232;
  --bs-link-color:#8FE9F5;
  --bs-link-hover-color:#2FD4E8;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}

/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:100px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--txt);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 76%);
  mask-image:radial-gradient(circle at 50% 0%,#000 0%,transparent 76%);
}
body::after{
  content:"";position:fixed;inset:-15% -8%;z-index:0;pointer-events:none;
  background:
    linear-gradient(115deg,transparent 28%,rgba(47,212,232,.09) 45%,transparent 58%),
    linear-gradient(115deg,transparent 56%,rgba(47,212,232,.055) 70%,transparent 80%);
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary-soft);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}

.site-container{
  position:relative;
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.site-main{position:relative;z-index:1;}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--r-btn);border:0;
  background:linear-gradient(135deg,#3FDDF0 0%,#1FB6CE 100%);
  color:#052831;font-weight:600;font-size:15px;line-height:1.4;
  box-shadow:var(--glow);
  transition:transform .2s ease-out,box-shadow .2s ease-out,filter .2s ease-out;
  cursor:pointer;white-space:nowrap;
}
.btn-glow:hover{
  color:#052831;filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 26px rgba(47,212,232,.5), 0 12px 30px rgba(0,0,0,.5);
}
.btn-glow:active{transform:translateY(1px);box-shadow:0 0 10px rgba(47,212,232,.25),0 4px 14px rgba(0,0,0,.4);}
.btn-glow:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-btn);
  border:1px solid rgba(47,212,232,.45);background:transparent;
  color:var(--primary-soft);font-weight:600;font-size:15px;line-height:1.4;
  transition:background .2s ease-out,border-color .2s ease-out,transform .2s ease-out,color .2s ease-out;
  cursor:pointer;white-space:nowrap;
}
.btn-ghost:hover{background:rgba(47,212,232,.10);border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}

.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary-soft);
  font-size:14px;font-weight:600;background:none;border:0;padding:0;cursor:pointer;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover i{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,12,20,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.site-header.is-scrolled{background:rgba(7,12,20,.92);}
.site-header.is-scrolled .header-inner{height:60px;}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:var(--nav-h);
  transition:height .25s ease;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--txt);}
.brand:hover{color:var(--txt);}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:var(--primary);filter:drop-shadow(0 0 10px rgba(47,212,232,.45));}
.brand-mark svg{width:34px;height:34px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:14px;}
.nav-item{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  color:var(--txt-2);font-size:15px;line-height:1.5;
  transition:color .2s ease,background .2s ease;
}
.nav-item:hover{color:var(--txt);background:rgba(255,255,255,.055);}
.nav-item.active{color:var(--primary);}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-4px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(47,212,232,.9);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-wrap{
  display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;
  border-radius:var(--r-pill);border:1px solid var(--glass-line);background:var(--glass);
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.search-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,212,232,.15);}
.search-toggle{background:none;border:0;padding:0;color:var(--txt-2);cursor:pointer;display:grid;place-items:center;width:18px;height:18px;transition:color .2s ease;}
.search-toggle:hover{color:var(--primary);}
.search-input{
  width:0;opacity:0;border:0;background:transparent;color:var(--txt);
  font-size:14px;outline:none;transition:width .25s ease,opacity .2s ease;
}
.search-input::placeholder{color:var(--txt-4);}
.search-wrap.is-open .search-input{width:158px;opacity:1;}
.nav-toggle{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--glass-line);
  background:var(--glass);display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:4px;cursor:pointer;transition:border-color .2s ease;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--txt-2);border-radius:2px;transition:background .2s ease;}
.nav-toggle:hover{border-color:var(--primary);}
.nav-toggle:hover span{background:var(--primary);}

/* 移动端抽屉 */
.mobile-nav{background:var(--bg-1);border-left:1px solid var(--glass-line);width:300px;color:var(--txt);}
.mobile-nav .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.mobile-nav .offcanvas-body{padding:20px;display:flex;flex-direction:column;gap:6px;}
.m-link{
  display:block;padding:12px 14px;border-radius:10px;color:var(--txt-2);
  font-size:15px;font-weight:500;transition:background .2s ease,color .2s ease;
}
.m-link:hover{background:rgba(255,255,255,.06);color:var(--txt);}
.m-link.active{color:var(--primary);background:rgba(47,212,232,.10);box-shadow:inset 0 0 0 1px rgba(47,212,232,.25);}
.m-close{background:none;border:0;color:var(--txt-2);font-size:18px;cursor:pointer;transition:color .2s ease;}
.m-close:hover{color:var(--primary);}
.m-cta{margin-top:14px;width:100%;}

/* ============ 页头 ============ */
.page-head{padding:56px 0 0;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:22px;}
.crumb a{color:var(--txt-3);}
.crumb a:hover{color:var(--primary);}
.crumb .crumb-cur{color:var(--txt-4);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.page-head-split{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(47,212,232,.35);background:rgba(47,212,232,.08);
  color:var(--primary);font-size:12px;font-weight:500;letter-spacing:1px;
}
.eyebrow i{font-size:11px;}
.page-head h1{
  font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;
  letter-spacing:-.5px;margin:16px 0 0;
  background:linear-gradient(120deg,#E9F2F8 30%,#8FE9F5 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.ph-sub{margin-top:14px;font-size:17px;line-height:1.8;color:var(--txt-2);max-width:640px;}
.ph-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.ph-tags span{font-size:13px;color:var(--txt-3);}
.ph-tags .tag{
  padding:5px 12px;border-radius:var(--r-pill);border:1px solid var(--glass-line);
  background:var(--glass);color:var(--txt-2);font-size:12px;font-weight:500;
}
.ph-tags .sep{color:var(--txt-4);}
.ph-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--glass-line);box-shadow:var(--shadow);aspect-ratio:16/10;
  background:var(--bg-2);
}
.ph-visual img{width:100%;height:100%;object-fit:cover;}
.ph-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,12,20,.30) 0%,rgba(7,12,20,.82) 100%);
}
.ph-badge{
  position:absolute;right:16px;bottom:16px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(18,28,44,.72);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  font-size:12px;color:var(--txt-2);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.ph-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px rgba(61,214,140,.9);}

/* ============ 答疑主体 ============ */
.board-section{padding:var(--gap-section) 0 0;}
.board-grid{display:grid;grid-template-columns:286px minmax(0,1fr);gap:40px;align-items:start;}
.side-nav{
  position:sticky;top:96px;display:flex;flex-direction:column;gap:3px;
  padding:22px 18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.side-title{
  font-size:12px;letter-spacing:2px;color:var(--txt-3);
  margin:0 0 10px 12px;font-weight:500;
}
.side-link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--txt-2);line-height:1.5;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.side-link .num{
  font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12px;color:var(--primary-deep);flex:0 0 auto;
}
.side-link:hover{background:rgba(255,255,255,.055);color:var(--txt);transform:translateX(2px);}
.side-link.active{
  color:var(--primary);background:rgba(47,212,232,.09);
  box-shadow:inset 0 0 0 1px rgba(47,212,232,.25);
}
.side-link.active .num{color:var(--primary);}

.row-list{display:flex;flex-direction:column;gap:16px;}
.row-card{
  display:grid;grid-template-columns:52px 156px minmax(0,1fr);gap:20px;align-items:center;
  padding:20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.row-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,212,232,.30);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-hover);
}
.row-num{
  font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:22px;font-weight:600;letter-spacing:1px;color:var(--primary);opacity:.92;
}
.row-thumb{
  position:relative;width:156px;height:94px;border-radius:12px;overflow:hidden;background:var(--bg-2);
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.row-card:hover .row-thumb img{transform:scale(1.05);}
.row-thumb::after{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .25s ease;
  background:linear-gradient(180deg,rgba(47,212,232,0) 40%,rgba(47,212,232,.16) 100%);
}
.row-card:hover .row-thumb::after{opacity:1;}
.row-body{min-width:0;}
.row-body h3{font-size:18px;font-weight:600;line-height:1.45;margin:0 0 6px;}
.row-body h3 a{color:var(--txt);}
.row-body h3 a:hover{color:var(--primary-soft);}
.row-body p{
  font-size:14px;line-height:1.7;color:var(--txt-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;}
.badge-o{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(47,212,232,.35);color:var(--primary);font-size:12px;font-weight:500;line-height:1.6;
}
.badge-s{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,122,77,.12);border:1px solid rgba(255,122,77,.32);
  color:var(--accent);font-size:12px;font-weight:500;line-height:1.6;
}
.row-meta .t{font-size:12px;color:var(--txt-4);}
.row-meta .go{margin-left:auto;color:var(--txt-3);font-size:13px;}
.row-meta .go i{transition:transform .2s ease;}
.row-card:hover .row-meta .go i{transform:translateX(4px);}
.row-card:hover .row-meta .go{color:var(--primary);}

/* ============ FAQ 摘选 ============ */
.faq-pick{padding:var(--gap-section) 0 0;}
.section-head{max-width:720px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2px;
  color:var(--primary);font-weight:500;margin-bottom:12px;
}
.section-kicker::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);font-weight:650;line-height:1.3;letter-spacing:-.3px;
}
.section-head p{margin-top:12px;color:var(--txt-2);font-size:15px;}
.faq-list{max-width:860px;margin:28px auto 0;}
.faq-accordion .accordion-item{
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-card);overflow:hidden;margin-bottom:12px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:rgba(47,212,232,.30);
  box-shadow:inset 3px 0 0 var(--primary),inset 0 1px 0 rgba(255,255,255,.08),var(--shadow-hover);
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--txt);font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 24px;border:0;box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--primary);background:rgba(47,212,232,.06);box-shadow:none;
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--primary);outline-offset:-3px;}
.faq-accordion .accordion-button::after{
  background-image:none !important;background-size:0 !important;
  content:"";width:9px;height:9px;margin-left:auto;flex:0 0 auto;
  border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(-45deg);transition:transform .28s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-accordion .accordion-body{
  padding:4px 24px 22px;color:var(--txt-2);font-size:15px;line-height:1.85;
}
.faq-accordion .accordion-body p{margin:0;}

/* ============ 下一步 ============ */
.next-step{padding:var(--gap-section) 0 0;}
.next-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
  padding:38px 40px;border-radius:var(--r-card);
  border:1px solid var(--glass-line);
  background:
    linear-gradient(120deg,rgba(47,212,232,.10) 0%,rgba(7,12,20,0) 55%),
    var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.next-card::before{
  content:"";position:absolute;right:-60px;top:-80px;width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(47,212,232,.18);opacity:.7;
}
.next-card h2{font-size:clamp(22px,2.2vw,28px);font-weight:650;line-height:1.35;}
.next-card p{margin-top:10px;color:var(--txt-2);font-size:15px;max-width:620px;}
.next-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}

/* ============ 分享条 ============ */
.share-bar{padding:var(--gap-section) 0 0;}
.share-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  padding:20px 26px;border-radius:var(--r-card);
  border:1px solid var(--glass-line);background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--shadow);
}
.share-text{flex:1 1 320px;font-size:14px;color:var(--txt-2);}
.share-text strong{display:block;color:var(--txt);font-size:16px;font-weight:600;margin-bottom:4px;}
.share-icons{display:flex;gap:10px;margin-left:auto;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);
  color:var(--txt-2);cursor:pointer;
  transition:color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(47,212,232,.45);box-shadow:0 0 16px rgba(47,212,232,.28);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;margin-top:var(--gap-section);
  border-top:1px solid var(--line);background:var(--bg-1);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:32px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:var(--txt);}
.footer-brand .brand-mark{color:var(--primary);}
.footer-brand .brand-text{font-size:17px;font-weight:700;}
.footer-text{margin-top:16px;color:var(--txt-3);font-size:14px;line-height:1.8;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social .icon-btn{width:38px;height:38px;border-radius:10px;}
.footer-title{font-size:13px;letter-spacing:1.5px;color:var(--txt);font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--txt-3);font-size:14px;transition:color .2s ease,padding-left .2s ease;}
.footer-links a:hover{color:var(--primary);padding-left:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--txt-4);font-size:13px;
}
.footer-bottom .domain{font-family:"Inter",ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--txt-3);letter-spacing:.5px;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease;}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--gap-section:72px;}
  .board-grid{grid-template-columns:250px minmax(0,1fr);gap:28px;}
  .page-head-split{grid-template-columns:minmax(0,1fr) 320px;gap:36px;}
  .row-card{grid-template-columns:46px 140px minmax(0,1fr);gap:16px;}
  .row-thumb{width:140px;height:86px;}
}
@media (max-width:991.98px){
  .page-head-split{grid-template-columns:1fr;gap:28px;}
  .ph-visual{max-width:520px;}
  .board-grid{grid-template-columns:1fr;gap:24px;}
  .side-nav{
    position:static;flex-direction:row;flex-wrap:wrap;gap:8px;padding:14px;
  }
  .side-title{width:100%;margin:0 0 4px 4px;}
  .side-link{padding:8px 12px;font-size:13px;background:rgba(255,255,255,.04);}
  .side-link .num{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .next-card{grid-template-columns:1fr;padding:30px 26px;}
}
@media (max-width:767.98px){
  :root{--gap-section:56px;--nav-h:56px;}
  body::after{display:none;}
  .site-container{padding:0 18px;}
  .page-head{padding-top:36px;}
  .row-card{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:16px;}
  .row-thumb{display:none;}
  .row-body p{-webkit-line-clamp:3;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .share-inner{padding:18px;}
  .share-icons{margin-left:0;width:100%;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:575.98px){
  body{font-size:15px;}
  .brand-text{font-size:15px;}
  .ph-sub{font-size:15px;}
  .ph-tags .sep{display:none;}
  .btn-glow,.btn-ghost{width:100%;}
  .next-actions{width:100%;}
  .row-num{font-size:18px;}
  .row-body h3{font-size:16px;}
  .faq-accordion .accordion-button{font-size:15.5px;padding:16px 18px;}
  .faq-accordion .accordion-body{padding:2px 18px 18px;}
}