/* roulang page: index */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;
  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-pill:999px;
  --container:1200px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px var(--line-glow),0 8px 26px rgba(35,209,180,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
  --sec-pad:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-ink);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(35,209,180,.3);color:#fff;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#04201B;padding:10px 16px;z-index:999;}
.skip-link:focus{left:12px;top:12px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  padding:12px 24px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04201B;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04201B;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px var(--line-glow),0 14px 34px rgba(35,209,180,.34);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:rgba(255,255,255,.02);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--line-glow);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:15px 32px;font-size:16px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;}
.brand-bar{
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  height:64px;
  overflow:hidden;
  transition:height .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .brand-bar{height:0;border-bottom-color:transparent;overflow:hidden;}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04201B;font-weight:800;font-size:13px;letter-spacing:.04em;
  box-shadow:0 0 0 1px var(--line-glow);
}
.brand-name{font-size:17px;font-weight:700;color:var(--text);letter-spacing:-.01em;}
.brand:hover .brand-name{color:var(--primary);}
.search-box{
  flex:1;max-width:420px;display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  padding:0 16px;height:40px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18);}
.search-box i{color:var(--text-3);font-size:13px;}
.search-box input{flex:1;background:none;border:none;outline:none;font-size:14px;color:var(--text);height:100%;}
.search-box input::placeholder{color:var(--text-3);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-input);
  border:1px solid var(--line);color:var(--text-2);
  align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{color:var(--primary);border-color:var(--line-glow);}

.channel-bar{
  background:rgba(10,17,32,.92);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled .channel-bar{border-bottom-color:var(--line-glow);background:rgba(6,10,18,.96);}
.channel-inner{display:flex;align-items:center;gap:18px;height:52px;overflow:hidden;}
.channel-list{display:flex;align-items:center;gap:6px;flex:1;overflow-x:auto;scrollbar-width:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-block;padding:6px 14px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.channel-link:hover{color:var(--primary);background:rgba(35,209,180,.08);}
.channel-link.is-active{color:var(--primary);background:rgba(35,209,180,.12);font-weight:600;}
.channel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;}
.channel-meta .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px rgba(52,211,153,.8);}

/* drawer */
.drawer{
  position:fixed;inset:0;z-index:120;pointer-events:none;
}
.drawer-mask{
  position:absolute;inset:0;background:rgba(3,6,12,.66);
  opacity:0;transition:opacity .22s var(--ease);
}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--surface-solid);
  border-left:1px solid var(--line);
  padding:22px 20px;
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  overflow-y:auto;
  display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);display:flex;align-items:center;justify-content:center;}
.drawer-close:hover{color:var(--primary);border-color:var(--line-glow);}
.drawer-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase;}
.drawer-list{display:flex;flex-direction:column;gap:2px;}
.drawer-list a{display:block;padding:11px 14px;border-radius:var(--radius-input);font-size:15px;color:var(--text-2);}
.drawer-list a:hover,.drawer-list a.is-active{background:rgba(35,209,180,.1);color:var(--primary);}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--bg-deep),var(--bg-ink));
  padding:76px 0 72px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(6,10,18,.86),rgba(6,10,18,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.28;
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 380px at 12% 18%,rgba(35,209,180,.14),transparent 66%),
    radial-gradient(520px 340px at 88% 8%,rgba(35,209,180,.08),transparent 70%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/48px 48px;
  opacity:.7;pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:6px;
  background:rgba(35,209,180,.12);color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);line-height:1.28;margin:18px 0 0;
}
.hero-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.trust-list{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);
}
.trust-item strong{
  display:block;font-size:clamp(20px,2.4vw,26px);color:var(--text);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.trust-item span{display:block;margin-top:4px;font-size:13px;color:var(--text-3);line-height:1.6;}

.visual-frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-solid);
  box-shadow:var(--shadow-card);
}
.visual-bar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:rgba(255,255,255,.04);border-bottom:1px solid var(--line);}
.visual-bar i{width:9px;height:9px;border-radius:50%;background:var(--text-3);opacity:.5;display:block;}
.visual-bar em{margin-left:8px;font-style:normal;font-size:12px;color:var(--text-3);}
.visual-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.visual-caption{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;background:rgba(16,26,44,.9);border-top:1px solid var(--line);}
.visual-caption strong{font-size:14px;}
.visual-caption span{font-size:12px;color:var(--text-3);}

/* ---------- section base ---------- */
.section{padding:var(--sec-pad) 0;position:relative;}
.section.alt{background:var(--bg-deep);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(22px,2.8vw,32px);line-height:1.35;position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:.86em;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center h2{padding-left:0;}
.section-head.center h2::before{display:none;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:step;}
.step-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.step-item:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.step-item::after{
  content:"";position:absolute;top:44px;right:-24px;width:24px;height:1px;
  background:linear-gradient(90deg,var(--line-glow),transparent);
}
.step-item:last-child::after{display:none;}
.step-num{
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--line-glow);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-variant-numeric:tabular-nums;
  background:rgba(35,209,180,.06);
}
.step-item h3{font-size:18px;margin-top:18px;}
.step-item p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- tiers ---------- */
.tiers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;align-items:start;}
.tier-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px 22px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tier-item:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-card);}
.tier-item::after{
  content:"";position:absolute;top:50%;right:-22px;width:22px;height:1px;
  background:linear-gradient(90deg,rgba(35,209,180,.4),transparent);
}
.tier-item:last-child::after{display:none;}
.tier-threshold{font-size:34px;font-weight:700;line-height:1.1;color:var(--primary);font-variant-numeric:tabular-nums;}
.tier-threshold small{font-size:13px;font-weight:500;color:var(--text-3);margin-left:6px;}
.tier-item h3{font-size:17px;margin-top:10px;}
.tier-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;margin-bottom:12px;
}
.badge-ok{background:rgba(52,211,153,.12);color:var(--ok);}
.badge-warn{background:rgba(255,154,60,.14);color:var(--accent);}
.badge-line{background:rgba(35,209,180,.12);color:var(--primary);}
.tier-checks{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.tier-checks li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.tier-checks i{color:var(--primary);font-size:12px;margin-top:7px;}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start;}
.plan-card{
  position:relative;border-radius:var(--radius-panel);
  background:var(--surface);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.plan-card:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.plan-card.is-rec{
  transform:translateY(-8px);
  border-color:var(--line-glow);
  box-shadow:0 0 0 1px var(--line-glow),0 18px 40px rgba(0,0,0,.45);
}
.plan-card.is-rec:hover{transform:translateY(-10px);}
.plan-top{height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-deep));opacity:.5;}
.plan-card.is-rec .plan-top{opacity:1;}
.plan-head{padding:24px 24px 18px;border-bottom:1px solid var(--line);}
.plan-head .tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;background:rgba(35,209,180,.12);color:var(--primary);
}
.plan-head h3{font-size:20px;margin-top:12px;}
.plan-head p{margin-top:6px;font-size:14px;color:var(--text-2);}
.plan-body{padding:6px 24px 24px;}
.plan-row{padding:16px 0;border-bottom:1px dashed var(--line);}
.plan-row:last-child{border-bottom:none;}
.plan-row dt{font-size:13px;color:var(--text-3);letter-spacing:.02em;}
.plan-row dd{margin:8px 0 0;font-size:15px;color:var(--text);line-height:1.75;}
.plan-row dd ul{display:flex;flex-direction:column;gap:6px;}
.plan-row dd li{display:flex;gap:9px;font-size:14px;color:var(--text-2);}
.plan-row dd li i{color:var(--primary);font-size:11px;margin-top:8px;}
.plan-cta{padding:0 24px 26px;}

/* ---------- countdown ---------- */
.count-band{
  position:relative;overflow:hidden;
  background:linear-gradient(140deg,rgba(255,154,60,.14),rgba(10,17,32,.9) 58%);
  border:1px solid rgba(255,154,60,.28);
  border-radius:var(--radius-panel);
  padding:40px;
}
.count-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 260px at 84% 22%,rgba(255,154,60,.18),transparent 70%);
  pointer-events:none;
}
.count-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;}
.count-inner h2{font-size:clamp(22px,2.8vw,30px);line-height:1.35;}
.count-inner p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:520px;}
.cd-boxes{display:flex;gap:12px;margin-top:24px;}
.cd-cell{
  flex:1;min-width:78px;border-radius:var(--radius-input);
  background:rgba(6,10,18,.72);border:1px solid rgba(255,154,60,.24);
  padding:14px 8px;text-align:center;
}
.cd-cell b{display:block;font-size:30px;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums;}
.cd-cell span{display:block;margin-top:4px;font-size:12px;color:var(--text-3);}
.cd-progress{margin-top:26px;}
.cd-progress-bar{height:8px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;}
.cd-progress-bar i{display:block;height:100%;width:78%;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--accent));}
.cd-progress-meta{display:flex;justify-content:space-between;margin-top:10px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.cd-note{margin-top:14px;font-size:13px;color:var(--text-3);}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-card);}
.post-cover{overflow:hidden;border-bottom:1px solid var(--line);}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s var(--ease);}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;background:rgba(35,209,180,.12);color:var(--primary);
  align-self:flex-start;
}
.post-title{font-size:17px;line-height:1.5;font-weight:600;}
.post-card.feature .post-title{font-size:20px;}
.post-desc{font-size:14px;color:var(--text-2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);padding-top:6px;}
.post-meta .more{color:var(--primary);font-weight:600;}
.post-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:60px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:rgba(16,26,44,.5);
}
.post-empty i{font-size:26px;color:var(--text-3);}
.post-empty p{color:var(--text-2);font-size:15px;}
.skeleton{height:14px;border-radius:6px;background:linear-gradient(90deg,rgba(255,255,255,.06),rgba(255,255,255,.12),rgba(255,255,255,.06));}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease);
}
.faq-item.is-open{border-color:var(--line-glow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;line-height:1.5;color:var(--text);
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:13px;transition:transform .2s var(--ease);flex-shrink:0;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
  background:rgba(6,10,18,.5);border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{border-top-color:var(--line);}
.faq-a p{padding:16px 20px;font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;}
.form-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-panel);padding:30px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.field label em{color:var(--danger);font-style:normal;margin-left:4px;}
.input,.select,.textarea{
  width:100%;background:rgba(6,10,18,.7);
  border:1px solid var(--line);border-radius:var(--radius-input);
  padding:12px 14px;font-size:15px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.textarea{min-height:112px;resize:vertical;line-height:1.7;}
.input::placeholder,.textarea::placeholder{color:var(--text-3);}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18);
}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field.has-error .input,.field.has-error .select,.field.has-error .textarea{border-color:var(--danger);}
.field-error{display:none;margin-top:7px;font-size:13px;color:var(--danger);}
.field.has-error .field-error{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--primary);flex-shrink:0;}
.form-success{
  display:none;align-items:center;gap:10px;margin-bottom:18px;
  padding:12px 16px;border-radius:var(--radius-input);
  background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.3);
  color:var(--ok);font-size:14px;
}
.form-success.is-show{display:flex;}
.form-side-list{display:flex;flex-direction:column;gap:18px;margin-top:28px;}
.form-side-item{display:flex;gap:14px;}
.form-side-item i{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:rgba(35,209,180,.1);color:var(--primary);font-size:14px;
}
.form-side-item h3{font-size:16px;}
.form-side-item p{margin-top:4px;font-size:14px;color:var(--text-2);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:64px 0 0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
  opacity:.5;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand span{font-size:17px;font-weight:700;}
.foot-col p{font-size:14px;color:var(--text-2);line-height:1.85;max-width:330px;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{font-size:14px;color:var(--text-2);}
.foot-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.8;}
.foot-contact i{color:var(--primary);font-size:13px;margin-top:7px;}
.foot-bottom{
  margin-top:52px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.foot-bottom .links{display:flex;gap:16px;flex-wrap:wrap;}
.foot-bottom a{color:var(--text-3);}
.foot-bottom a:hover{color:var(--primary);}

/* ---------- backtop ---------- */
.backtop{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--surface-solid);border:1px solid var(--line-glow);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  box-shadow:var(--shadow-card);
}
.backtop.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.backtop:hover{color:#04201B;background:var(--primary);}

/* ---------- anim ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .22s var(--ease),transform .22s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec-pad:72px;}
  .post-grid{grid-template-columns:1fr 1fr;}
  .post-card.feature{grid-column:1/-1;}
  .tiers{grid-template-columns:repeat(2,minmax(0,1fr));}
  .tier-item::after{display:none;}
}
@media (max-width:1023px){
  :root{--sec-pad:64px;}
  .hero-grid{grid-template-columns:1fr;gap:38px;}
  .hero-sub{max-width:100%;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-item:nth-child(2)::after{display:none;}
  .compare-grid{grid-template-columns:1fr;}
  .plan-card.is-rec{transform:none;}
  .plan-card.is-rec:hover{transform:translateY(-2px);}
  .count-inner{grid-template-columns:1fr;gap:26px;}
  .form-grid{grid-template-columns:1fr;gap:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .search-box{max-width:260px;}
}
@media (max-width:767px){
  :root{--sec-pad:48px;}
  .container{padding:0 16px;}
  .brand-bar{height:60px;}
  .brand-inner{height:60px;gap:12px;}
  .brand-name{font-size:15px;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .brand-actions .btn{display:none;}
  .channel-inner{height:48px;gap:10px;}
  .channel-meta{display:none;}
  .hero{padding:52px 0 48px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{flex:1 1 auto;}
  .trust-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
  .steps{grid-template-columns:1fr;}
  .step-item::after{display:none;}
  .tiers{grid-template-columns:1fr;}
  .count-band{padding:26px 20px;}
  .cd-boxes{gap:8px;}
  .cd-cell{min-width:0;padding:10px 4px;}
  .cd-cell b{font-size:22px;}
  .post-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .form-card{padding:22px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-col p{max-width:100%;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .backtop{right:14px;bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;
  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 460px at 12% -6%,rgba(35,209,180,.10),transparent 62%),
    radial-gradient(760px 420px at 92% 4%,rgba(255,154,60,.05),transparent 60%),
    var(--bg-ink);
  background-attachment:fixed;
}
body::before{
  content:"";
  position:fixed;
  inset: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:56px 56px;
  opacity:.5;
  z-index:0;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--text);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:var(--primary)}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(35,209,180,.3);color:#03150F}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04211C;
  box-shadow:0 0 0 1px var(--line-glow),0 8px 26px rgba(35,209,180,.26);
}
.btn-primary:hover{color:#04211C;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px var(--line-glow),0 14px 34px rgba(35,209,180,.34)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:transparent;border-color:var(--line-glow);color:var(--primary)}
.btn-ghost:hover{background:rgba(35,209,180,.1);color:var(--primary)}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 30px;font-size:16px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;line-height:1;
  background:rgba(35,209,180,.12);color:var(--primary);
  box-shadow:inset 0 0 0 1px rgba(35,209,180,.18);
}
.badge-accent{background:rgba(255,154,60,.14);color:var(--accent);box-shadow:inset 0 0 0 1px rgba(255,154,60,.22)}
.badge-muted{background:rgba(255,255,255,.05);color:var(--text-2);box-shadow:inset 0 0 0 1px var(--line)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,18,.86);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,10,18,.95);box-shadow:0 1px 0 var(--line-glow),0 12px 30px rgba(0,0,0,.45)}
.brand-bar{height:64px;overflow:hidden;transition:height .2s var(--ease),opacity .2s var(--ease)}
.site-header.is-scrolled .brand-bar{height:0;opacity:0;pointer-events:none}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04211C;font-weight:800;font-size:13px;letter-spacing:.02em;
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.search-box{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;
  border-radius:999px;background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-3);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18)}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{display:none;width:38px;height:38px;border-radius:10px;place-items:center;border:1px solid var(--line);color:var(--text-2);cursor:pointer}
.nav-toggle:hover{color:var(--primary);border-color:var(--line-glow)}
.channel-bar{height:52px;border-top:1px solid var(--line);background:rgba(10,17,32,.6)}
.channel-inner{display:flex;align-items:center;gap:20px;height:52px}
.channel-list{display:flex;align-items:center;gap:6px;list-style:none;padding:0;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-link{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--text-2);white-space:nowrap}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.channel-link.is-active{color:var(--primary);background:rgba(35,209,180,.12);box-shadow:inset 0 0 0 1px var(--line-glow)}
.channel-meta{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.14)}

/* ---------- 移动端抽屉 ---------- */
.nav-scrim{position:fixed;inset:0;background:rgba(3,6,12,.62);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70}
.nav-scrim.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;
  background:var(--surface-solid);border-left:1px solid var(--line);
  padding:24px;overflow-y:auto;transform:translateX(101%);
  transition:transform .24s var(--ease);
}
.nav-drawer.is-open{transform:none}
.nav-drawer h3{font-size:14px;color:var(--text-3);margin:24px 0 10px;font-weight:600}
.drawer-links{display:flex;flex-direction:column;gap:6px}
.drawer-links a{padding:9px 12px;border-radius:10px;font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drawer-links a.is-active{color:var(--primary);background:rgba(35,209,180,.1);border-color:var(--line-glow)}
.hot-tags{display:flex;flex-wrap:wrap;gap:8px}
.hot-tags a{font-size:13px;padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.05);color:var(--text-2)}
.hot-tags a:hover{color:var(--primary);background:rgba(35,209,180,.12)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);display:grid;place-items:center;margin-left:auto;cursor:pointer}
.drawer-close:hover{color:var(--primary);border-color:var(--line-glow)}

/* ---------- 面包屑 ---------- */
.crumb{padding:24px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.crumb li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--text-3)}
.crumb li[aria-current]{color:var(--text-3)}

/* ---------- 文章布局 ---------- */
.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;padding:28px 0 88px;align-items:start}
.post-main{min-width:0}

.post-head{
  position:relative;overflow:hidden;
  border-radius:var(--radius-panel);border:1px solid var(--line);
  padding:32px;
  background:
    linear-gradient(180deg,rgba(10,17,32,.55),rgba(6,10,18,.94)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  box-shadow:var(--shadow-card);
}
.post-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 240px at 8% 0%,rgba(35,209,180,.14),transparent 68%);
}
.post-head > *{position:relative;z-index:1}
.post-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.post-title{font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.01em;margin:0}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:18px;font-size:13px;color:var(--text-3)}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta i{color:var(--primary);font-size:12px}

.post-cover{margin:28px 0 0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--surface-solid)}
.post-cover img{width:100%;height:100%;object-fit:cover}

.post-body{max-width:760px;margin-top:32px;font-size:16px;line-height:1.85;color:var(--text);overflow-wrap:break-word}
.post-body p{margin:0 0 1em}
.post-body h2{
  position:relative;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35;
  margin:1.8em 0 .7em;padding-left:16px;scroll-margin-top:140px;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.32em;bottom:.32em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.post-body h3{font-size:19px;font-weight:600;line-height:1.5;margin:1.6em 0 .6em;scroll-margin-top:140px}
.post-body ul,.post-body ol{padding-left:1.2em;margin:0 0 1em}
.post-body li{margin:.42em 0}
.post-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.post-body strong{color:#fff}
.post-body blockquote{
  margin:1.4em 0;padding:16px 20px;border-left:3px solid var(--primary);
  border-radius:0 12px 12px 0;background:var(--surface);color:var(--text-2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.post-body blockquote p:last-child{margin-bottom:0}
.post-body img{border-radius:14px;margin:1.4em 0;width:100%}
.post-body figure{margin:1.4em 0}
.post-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.post-body .table-wrap{overflow-x:auto;margin:1.4em 0;border:1px solid var(--line);border-radius:12px}
.post-body table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
.post-body th,.post-body td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
.post-body th{background:rgba(35,209,180,.08);color:var(--text);font-weight:600;white-space:nowrap}
.post-body tr:last-child td{border-bottom:0}
.post-body code{background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;font-size:.92em}

.post-empty{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  margin-top:32px;padding:56px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-panel);background:var(--surface-solid);
}
.post-empty i{font-size:28px;color:var(--text-3)}
.post-empty p{margin:0;color:var(--text-2)}

.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:6px;font-size:13px;
  background:rgba(255,255,255,.05);color:var(--text-2);box-shadow:inset 0 0 0 1px var(--line);
}
.tag:hover{color:var(--primary);background:rgba(35,209,180,.12);box-shadow:inset 0 0 0 1px rgba(35,209,180,.22)}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:28px 0 0}
.prevnext a{
  display:block;padding:16px 18px;border-radius:var(--radius-card);
  background:var(--surface-solid);border:1px solid var(--line);
}
.prevnext a:hover{border-color:var(--line-glow);background:var(--surface)}
.prevnext .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px}
.prevnext .pn-title{font-size:15px;font-weight:600;line-height:1.5;color:var(--text)}

.section-block{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px}
.section-title{position:relative;font-size:clamp(22px,2.8vw,32px);font-weight:700;line-height:1.35;margin:0;padding-left:16px}
.section-title::before{
  content:"";position:absolute;left:0;top:.34em;bottom:.34em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-sub{font-size:14px;color:var(--text-2);margin:8px 0 0;padding-left:16px;max-width:640px}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 1px 0 rgba(255,255,255,.06) inset;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-card)}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:var(--surface-solid)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16px;font-weight:600;line-height:1.5;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:13.5px;line-height:1.7;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:var(--text-3)}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:130px;display:flex;flex-direction:column;gap:20px}
.side-panel{
  padding:20px;border-radius:var(--radius-panel);
  background:var(--surface-solid);border:1px solid var(--line);
  box-shadow:0 1px 0 rgba(255,255,255,.05) inset;
}
.side-title{position:relative;font-size:15px;font-weight:700;margin:0 0 14px;padding-left:12px}
.side-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:14px;border-radius:2px;background:var(--primary)}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px;font-size:14px;max-height:340px;overflow-y:auto}
.toc-list a{display:block;padding:6px 0 6px 10px;border-left:2px solid transparent;color:var(--text-2);line-height:1.6}
.toc-list a:hover{color:var(--primary);border-left-color:var(--line-glow)}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary)}
.toc-empty{font-size:13px;color:var(--text-3);margin:0}
.hot-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:14px}
.hot-list a{display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--text-2)}
.hot-list a:hover{color:var(--primary)}
.hot-num{color:var(--primary);font-weight:700;font-variant-numeric:tabular-nums}
.side-cta{margin-top:6px;display:flex;flex-direction:column;gap:10px}
.side-cta p{font-size:13px;color:var(--text-2);margin:0;line-height:1.7}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-top:56px;padding:36px;border-radius:var(--radius-panel);
  border:1px solid var(--line-glow);
  background:linear-gradient(135deg,rgba(35,209,180,.13),rgba(255,154,60,.05) 62%,rgba(10,17,32,.2)),var(--surface-solid);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin:0 0 8px;line-height:1.4}
.cta-band p{margin:0;color:var(--text-2);font-size:14.5px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:88px;background:var(--bg-deep);border-top:1px solid var(--line)}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.5;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 32px}
.foot-col h4{font-size:15px;margin:0 0 14px;font-weight:700}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:12px}
.foot-col p{font-size:13.5px;line-height:1.8;color:var(--text-2);margin:0;max-width:340px}
.foot-links{display:flex;flex-direction:column;gap:10px;font-size:14px}
.foot-links a{color:var(--text-2)}
.foot-links a:hover{color:var(--primary)}
.foot-contact{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.foot-contact i{color:var(--primary);margin-right:8px}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.foot-bottom .links{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.foot-bottom a{color:var(--text-3)}
.foot-bottom a:hover{color:var(--primary)}

/* ---------- 返回顶部 ---------- */
.backtop{
  position:fixed;right:24px;bottom:24px;z-index:50;
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--surface-solid);border:1px solid var(--line-glow);color:var(--primary);
  cursor:pointer;opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease),transform .2s var(--ease);
}
.backtop.is-show{opacity:1;visibility:visible}
.backtop:hover{transform:translateY(-2px)}

/* ---------- 进场 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .post-layout{gap:28px}
}
@media (max-width:1023px){
  .nav-toggle{display:grid}
  .search-box{display:none}
  .channel-meta{display:none}
  .site-header.is-scrolled .brand-bar{height:64px;opacity:1;pointer-events:auto}
  .post-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;top:auto}
  .toc-list{max-height:none}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .brand-name{font-size:15px}
  .brand-inner{gap:12px}
  .channel-inner{gap:12px}
  .post-head{padding:22px}
  .post-body{margin-top:24px}
  .post-meta{gap:12px}
  .related-grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .prevnext{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px;padding:48px 0 24px}
  .cta-band{padding:26px}
  .section-block{margin-top:44px}
  .site-footer{margin-top:64px}
  .backtop{right:16px;bottom:16px}
}
@media (max-width:520px){
  .foot-grid{grid-template-columns:1fr}
  .btn-lg{height:48px;padding:0 22px;font-size:15px}
  .post-head{padding:18px}
  .brand-actions .btn-ghost{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

.reveal{opacity:1;transform:none}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;

  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-btn:12px;

  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-soft:0 10px 26px rgba(0,0,0,.32);
  --glow-primary:0 0 0 1px var(--line-glow), 0 8px 26px rgba(35,209,180,.26);

  --container:1200px;
  --gap:24px;
  --section-pad:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(35,209,180,.10), transparent 62%),
    radial-gradient(760px 480px at 92% 4%, rgba(255,154,60,.06), transparent 60%),
    var(--bg-ink);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#5fe6cd;text-decoration:underline;text-underline-offset:3px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(35,209,180,.3);}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;line-height:1;
  text-decoration:none;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140f;
  box-shadow:var(--glow-primary);
}
.btn-primary:hover{background:linear-gradient(135deg,#37e0c4,#129c87);color:#04140f;box-shadow:0 0 0 1px var(--line-glow),0 12px 32px rgba(35,209,180,.34);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  color:var(--text);
  border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--line-glow);color:var(--primary);background:rgba(35,209,180,.07);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:15px 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:6px;
  font-size:13px;font-weight:600;line-height:24px;
  background:rgba(35,209,180,.12);color:var(--primary);
}
.badge-accent{background:rgba(255,154,60,.14);color:var(--accent);}
.badge-plain{background:rgba(255,255,255,.06);color:var(--text-2);}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;}
.brand-bar{
  background:rgba(6,10,18,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),padding .2s var(--ease);
}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px;}
.site-header.is-collapsed .brand-inner{height:0;overflow:hidden;padding-top:0;padding-bottom:0;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);text-decoration:none;}
.brand:hover{text-decoration:none;color:var(--text);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140f;font-size:14px;font-weight:800;letter-spacing:.02em;
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.search-box{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.search-box i{position:absolute;left:14px;color:var(--text-3);font-size:14px;pointer-events:none;}
.search-box input{
  width:100%;height:40px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  color:var(--text);padding:0 14px 0 38px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.2);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-input);
  border:1px solid var(--line);color:var(--text);font-size:16px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-glow);color:var(--primary);}

.channel-bar{
  background:rgba(10,17,32,.9);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header.is-scrolled .channel-bar{
  background:rgba(8,14,26,.96);
  box-shadow:0 1px 0 var(--line-glow),0 12px 28px rgba(0,0,0,.4);
}
.channel-inner{display:flex;align-items:center;gap:18px;height:52px;}
.channel-list{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-block;padding:7px 14px;border-radius:8px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.channel-link:hover{color:var(--text);background:rgba(255,255,255,.05);text-decoration:none;}
.channel-link.is-active{color:var(--primary);background:rgba(35,209,180,.1);border-color:var(--line-glow);}
.channel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.15);}

/* 抽屉 */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
  background:var(--surface-solid);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .24s var(--ease);
  z-index:80;padding:22px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(2,5,10,.6);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:15px;font-weight:700;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);}
.drawer-close:hover{color:var(--primary);border-color:var(--line-glow);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin:16px 0 20px;}
.drawer-nav a{padding:11px 12px;border-radius:10px;color:var(--text-2);font-size:15px;}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(35,209,180,.1);color:var(--primary);text-decoration:none;}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.drawer-tags .badge{height:26px;line-height:26px;font-weight:500;}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li::after{content:"/";margin-left:8px;color:var(--text-3);opacity:.6;}
.crumb li:last-child::after{content:"";margin:0;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .current{color:var(--text);}

/* ============ 小 Hero ============ */
.page-hero{position:relative;overflow:hidden;margin-top:20px;border-radius:var(--radius-panel);border:1px solid var(--line);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(6,10,18,.94) 6%,rgba(6,10,18,.72) 46%,rgba(6,10,18,.42) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.9;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 88% 16%, rgba(35,209,180,.14), transparent 62%);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.9fr);gap:var(--gap);padding:52px 44px;align-items:center;}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.28;letter-spacing:-.01em;font-weight:700;}
.page-hero h1 em{font-style:normal;color:var(--primary);}
.page-hero-sub{margin-top:14px;color:var(--text-2);font-size:16px;max-width:52ch;line-height:1.8;}
.page-hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}
.page-hero-art{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/11;background:var(--surface-solid);
}
.page-hero-art img{width:100%;height:100%;object-fit:cover;}
.page-hero-art figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;font-size:13px;color:var(--text-2);
  background:linear-gradient(to top,rgba(6,10,18,.92),rgba(6,10,18,0));
}

/* ============ 锚点条 ============ */
.anchor-bar{margin-top:22px;position:relative;z-index:3;}
.anchor-list{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-list a{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 15px;border-radius:10px;font-size:14px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.anchor-list a:hover{border-color:var(--line-glow);color:var(--primary);text-decoration:none;transform:translateY(-2px);transition:transform .2s var(--ease);}

/* ============ 板块通用 ============ */
.section{padding:var(--section-pad) 0;}
.section-alt{background:linear-gradient(180deg,rgba(10,17,32,0),var(--bg-deep) 18%,rgba(10,17,32,0));}
.section-head{max-width:760px;margin-bottom:38px;}
.section-title{
  font-size:clamp(22px,2.8vw,32px);line-height:1.35;font-weight:700;
  padding-left:16px;position:relative;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-sub{margin-top:12px;color:var(--text-2);}

/* ============ 双列图文 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center;margin-bottom:64px;}
.split:last-child{margin-bottom:0;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:var(--surface-solid);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .24s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split-media figcaption{padding:10px 16px;font-size:13px;color:var(--text-3);background:rgba(255,255,255,.02);}
.split h3{font-size:19px;line-height:1.5;margin-bottom:12px;}
.split p{color:var(--text-2);margin-bottom:.9em;}
.point-list li{
  position:relative;padding-left:26px;margin-bottom:10px;color:var(--text-2);
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:.72em;width:12px;height:7px;
  border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);border-radius:1px;
}
.point-list li strong{color:var(--text);font-weight:600;}

/* ============ 纵向步骤条 ============ */
.steps{position:relative;padding-left:6px;}
.step-item{
  position:relative;padding:0 0 30px 62px;
}
.step-item::before{
  content:"";position:absolute;left:21px;top:44px;bottom:0;width:0;
  border-left:1px dashed rgba(35,209,180,.32);
}
.step-item:last-child{padding-bottom:0;}
.step-item:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-glow);color:var(--primary);
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  background:rgba(35,209,180,.06);
}
.step-item h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.step-item p{color:var(--text-2);margin-bottom:.7em;}
.step-note{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  border-radius:8px;padding:6px 12px;
}
.step-note i{color:var(--primary);font-size:12px;}

/* ============ 入口形态卡片 ============ */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap);}
.form-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-soft);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.form-card::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;border-radius:var(--radius-card) var(--radius-card) 0 0;
  background:linear-gradient(90deg,rgba(255,255,255,.06),rgba(255,255,255,0));
}
.form-card:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.form-card h3{font-size:18px;margin:12px 0 10px;}
.form-card p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.form-card .hint{
  display:flex;align-items:flex-start;gap:8px;
  font-size:13.5px;color:var(--text-3);line-height:1.6;
  border-top:1px dashed var(--line);padding-top:12px;
}
.form-card .hint i{color:var(--accent);margin-top:4px;font-size:12px;}

/* ============ 核对清单面板 ============ */
.check-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-panel);
  padding:32px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:34px;align-items:start;
}
.check-panel h3{font-size:20px;margin-bottom:12px;}
.check-panel p{color:var(--text-2);}
.check-items{display:grid;gap:12px;}
.check-items li{
  display:flex;gap:12px;align-items:flex-start;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;font-size:15px;color:var(--text-2);
}
.check-items i{color:var(--primary);margin-top:6px;font-size:13px;}
.check-items strong{color:var(--text);font-weight:600;}

/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;line-height:1.5;
  color:var(--text);text-align:left;
}
.faq-q:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:14px;transition:transform .2s var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
  background:rgba(6,10,18,.4);
}
.faq-a p{margin:0;padding:0 20px 18px;color:var(--text-2);line-height:1.8;font-size:15px;}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--radius-panel);
  border:1px solid var(--line-glow);
  padding:42px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:
    radial-gradient(520px 260px at 86% 12%, rgba(35,209,180,.16), transparent 62%),
    linear-gradient(120deg, rgba(18,28,46,.92), rgba(10,17,32,.92));
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.4;}
.cta-band p{margin-top:10px;color:var(--text-2);max-width:60ch;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 其他分类卡 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap);}
.cat-card{
  display:block;color:var(--text);text-decoration:none;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-soft);text-decoration:none;color:var(--text);}
.cat-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--surface-solid);}
.cat-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.cat-card:hover .thumb img{transform:scale(1.03);}
.cat-card .body{padding:18px 18px 20px;}
.cat-card h3{font-size:17px;line-height:1.5;margin-bottom:8px;}
.cat-card p{font-size:14px;color:var(--text-2);margin:0 0 14px;line-height:1.7;}
.cat-card .go{display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--primary);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--section-pad);
  background:linear-gradient(180deg,rgba(10,17,32,.4),#05080f);
  border-top:1px solid var(--line);
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(35,209,180,0),var(--primary),rgba(35,209,180,0));
  opacity:.55;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding:56px 0 34px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px;}
.foot-col p{color:var(--text-2);font-size:14.5px;line-height:1.8;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{color:var(--text-2);font-size:14.5px;}
.foot-links a:hover{color:var(--primary);}
.foot-contact li{display:flex;gap:10px;color:var(--text-2);font-size:14.5px;margin-bottom:12px;line-height:1.7;}
.foot-contact i{color:var(--primary);margin-top:6px;font-size:13px;flex:0 0 auto;}
.foot-bottom{
  border-top:1px solid var(--line);
  padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-3);
}
.foot-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.foot-bottom a{color:var(--text-3);}
.foot-bottom a:hover{color:var(--primary);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:60;
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-solid);border:1px solid var(--line);color:var(--text-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--primary);border-color:var(--line-glow);}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .24s var(--ease),transform .24s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  :root{--section-pad:64px;}
  .search-box{display:none;}
  .channel-meta{display:none;}
  .page-hero-inner{grid-template-columns:minmax(0,1fr);padding:40px 32px;}
  .page-hero-art{aspect-ratio:16/9;}
  .split{grid-template-columns:minmax(0,1fr);gap:26px;}
  .split.reverse .split-media{order:0;}
  .check-panel{grid-template-columns:minmax(0,1fr);gap:24px;}
}
@media (max-width:767px){
  :root{--section-pad:48px;--gap:16px;}
  .container{padding:0 16px;}
  .brand-actions .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
  .form-grid{grid-template-columns:minmax(0,1fr);}
  .faq-list{grid-template-columns:minmax(0,1fr);}
  .cat-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:26px;padding:40px 0 26px;}
  .cta-band{padding:30px 22px;}
  .page-hero-inner{padding:30px 20px 34px;}
  .check-panel{padding:24px 20px;}
  .step-item{padding-left:52px;}
  .step-num{width:38px;height:38px;font-size:15px;}
  .step-item::before{left:18px;top:38px;}
  .brand-name{font-size:15px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .section-title{font-size:22px;}
  .btn{padding:11px 18px;font-size:14.5px;}
  .btn-lg{padding:13px 22px;font-size:15px;}
  .cta-actions .btn{flex:1 1 auto;}
  .to-top{right:14px;bottom:16px;}
}

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

/* roulang page: category2 */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;
  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-btn:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-ink);
  background-image:
    radial-gradient(1100px 520px at 12% -8%, rgba(35,209,180,.10), transparent 62%),
    radial-gradient(760px 420px at 92% 4%, rgba(14,143,124,.10), transparent 66%),
    linear-gradient(180deg,#060A12 0%,#08101C 45%,#060A12 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--text);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(35,209,180,.32);color:#fff;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border:1px solid transparent;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04201C;
  box-shadow:0 0 0 1px var(--line-glow),0 8px 26px rgba(35,209,180,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--line-glow),0 14px 34px rgba(35,209,180,.36);color:#04201C;background:linear-gradient(135deg,#2FE1C3,#109A85);}
.btn-primary:active{transform:translateY(0);background:linear-gradient(135deg,#1BB79D,#0B7A69);}
.btn-ghost{
  background:rgba(255,255,255,.03);border-color:var(--line);color:var(--text);
}
.btn-ghost:hover{border-color:var(--line-glow);color:var(--primary);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- 通用标签/徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:6px;font-size:12px;font-weight:600;line-height:1;
  background:rgba(35,209,180,.12);color:var(--primary);
}
.badge-accent{background:rgba(255,154,60,.14);color:var(--accent);}
.badge-soft{background:rgba(255,255,255,.06);color:var(--text-2);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;backdrop-filter:blur(14px) saturate(140%);}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:transparent;transition:background .2s var(--ease);}
.site-header.is-compact::after{background:linear-gradient(90deg,transparent,var(--line-glow),transparent);}
.brand-bar{
  height:64px;display:flex;align-items:center;overflow:hidden;
  background:rgba(6,10,18,.82);border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),opacity .2s var(--ease),border-color .2s var(--ease);
}
.brand-inner{display:flex;align-items:center;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:700;}
.brand:hover{color:var(--text);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:11px;font-size:14px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04201C;box-shadow:0 0 0 1px var(--line-glow),0 6px 18px rgba(35,209,180,.24);
}
.brand-name{font-size:17px;white-space:nowrap;}
.search-box{
  position:relative;flex:1 1 auto;max-width:420px;display:flex;align-items:center;
  height:40px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:rgba(255,255,255,.03);padding:0 12px;gap:9px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box i{color:var(--text-3);font-size:14px;}
.search-box input{flex:1;background:transparent;border:0;outline:none;height:100%;}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.03);
  color:var(--text);cursor:pointer;font-size:16px;
}
.nav-toggle:hover{border-color:var(--line-glow);color:var(--primary);}

.channel-bar{background:rgba(10,17,32,.88);border-bottom:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;gap:18px;height:52px;}
.channel-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:9px;
  font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.channel-link:hover{background:rgba(255,255,255,.05);color:var(--primary);}
.channel-link.is-active{background:rgba(35,209,180,.12);color:var(--primary);font-weight:600;}
.channel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;}
.channel-meta .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.14);}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none;}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer-mask{position:absolute;inset:0;background:rgba(3,6,12,.65);opacity:0;transition:opacity .22s var(--ease);}
.drawer.is-open .drawer-mask{opacity:1;}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(84vw,340px);
  background:var(--surface-solid);border-left:1px solid var(--line);
  padding:20px;overflow-y:auto;transform:translateX(100%);
  transition:transform .24s var(--ease);display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer;}
.drawer-close:hover{border-color:var(--line-glow);color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  padding:11px 14px;border-radius:10px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--primary);}
.drawer-nav a.is-active{background:rgba(35,209,180,.12);color:var(--primary);font-weight:600;}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;}
.hot-tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--radius-btn);
  font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03);
}
.hot-tag:hover{border-color:var(--line-glow);color:var(--primary);}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 6px;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:var(--text-3);opacity:.7;}
.crumb .current{color:var(--text);}

/* ---------- 分类小 Hero ---------- */
.hero-cat{position:relative;padding:36px 0 44px;overflow:hidden;}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.22;
  -webkit-mask-image:radial-gradient(120% 100% at 15% 0%,#000 10%,transparent 78%);
  mask-image:radial-gradient(120% 100% at 15% 0%,#000 10%,transparent 78%);
}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(900px 380px at 8% -20%,rgba(35,209,180,.16),transparent 60%);
  pointer-events:none;
}
.hero-cat-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:44px;align-items:center;}
.hero-cat h1{font-size:clamp(28px,4.2vw,44px);line-height:1.28;font-weight:700;letter-spacing:-0.01em;margin-bottom:14px;}
.hero-cat h1 em{font-style:normal;color:var(--primary);}
.hero-lead{font-size:16.5px;color:var(--text-2);max-width:640px;margin-bottom:22px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-visual{position:relative;}
.hero-shot{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface-solid);
  box-shadow:var(--shadow-card);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.06),rgba(6,10,18,.62));
}
.hero-icons{
  position:absolute;left:18px;bottom:-20px;display:flex;gap:10px;
}
.hero-icons span{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;font-size:17px;
  background:var(--surface-solid);border:1px solid var(--line-glow);color:var(--primary);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 10px 24px rgba(0,0,0,.42);
}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:116px;z-index:40;
  background:rgba(8,14,26,.82);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
}
.anchor-inner{display:flex;align-items:center;gap:10px;height:50px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner .anchor-label{font-size:13px;color:var(--text-3);white-space:nowrap;}
.anchor-link{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--radius-btn);
  font-size:13.5px;color:var(--text-2);border:1px solid var(--line);white-space:nowrap;
  background:rgba(255,255,255,.02);
}
.anchor-link:hover{border-color:var(--line-glow);color:var(--primary);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-deep);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{
  position:relative;font-size:clamp(22px,2.8vw,32px);line-height:1.35;padding-left:16px;margin-bottom:12px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:1.05em;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{color:var(--text-2);margin:0;}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  border-top-color:rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.card-cover{position:relative;overflow:hidden;border-radius:14px;margin:14px 14px 0;}
.card-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card-cover img{transform:scale(1.03);}
.card-cover .badge{position:absolute;left:10px;top:10px;}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:19px;line-height:1.45;}
.card-body p{color:var(--text-2);font-size:14.5px;line-height:1.75;margin:0;}
.card-list{display:flex;flex-direction:column;gap:9px;margin-top:2px;}
.card-list li{display:flex;gap:9px;font-size:14px;color:var(--text-2);line-height:1.7;}
.card-list i{color:var(--primary);font-size:13px;margin-top:6px;flex:0 0 auto;}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--text-3);
}
.card-foot a{color:var(--primary);font-weight:600;}
.card-foot a:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- 对照表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius-panel);overflow:hidden;
  background:var(--surface-solid);box-shadow:var(--shadow-card);
}
.table-scroll{overflow-x:auto;}
table.tbl{width:100%;min-width:780px;border-collapse:collapse;font-size:14.5px;}
table.tbl caption{
  text-align:left;padding:18px 20px 0;font-size:14px;color:var(--text-3);
}
table.tbl th,table.tbl td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;}
table.tbl thead th{
  background:rgba(35,209,180,.10);color:var(--primary);font-size:14px;font-weight:700;white-space:nowrap;
  border-bottom:1px solid var(--line-glow);
}
table.tbl tbody tr:hover{background:rgba(255,255,255,.025);}
table.tbl tbody tr:last-child td{border-bottom:0;}
table.tbl td strong{color:var(--text);font-weight:600;}
.tbl-note{padding:14px 20px;background:rgba(255,255,255,.02);color:var(--text-3);font-size:13.5px;border-top:1px solid var(--line);}

/* ---------- 场景对照列表 ---------- */
.scene-list{display:flex;flex-direction:column;gap:14px;}
.scene-row{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) auto;gap:20px;align-items:center;
  padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.scene-row:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.scene-row h3{font-size:17px;margin-bottom:6px;}
.scene-row p{margin:0;color:var(--text-2);font-size:14px;line-height:1.7;}
.scene-pick{font-size:14.5px;color:var(--text-2);}
.scene-pick b{color:var(--primary);font-weight:600;}

/* ---------- 编号步骤 ---------- */
.steps-ol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:stepc;}
.step-item{
  position:relative;padding:24px 20px 22px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);
}
.step-item::before{
  counter-increment:stepc;content:counter(stepc,decimal-leading-zero);
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;margin-bottom:14px;
  border:1px solid var(--line-glow);color:var(--primary);font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.step-item h3{font-size:17px;margin-bottom:8px;}
.step-item p{color:var(--text-2);font-size:14px;margin:0;line-height:1.75;}

/* ---------- 更新条 ---------- */
.update-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
.update-item{
  padding:18px 20px;border:1px solid var(--line);border-left:3px solid var(--primary);
  border-radius:12px;background:rgba(255,255,255,.025);
}
.update-item time{display:block;font-size:13px;color:var(--text-3);margin-bottom:6px;font-variant-numeric:tabular-nums;}
.update-item p{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);
  backdrop-filter:blur(14px) saturate(140%);overflow:hidden;
  transition:border-color .22s var(--ease);
}
.faq-item:hover{border-color:var(--line-glow);}
.faq-q{margin:0;}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:18px 20px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16.5px;font-weight:600;line-height:1.5;
}
.faq-q button:hover{color:var(--primary);}
.faq-q i{color:var(--primary);font-size:14px;transition:transform .22s var(--ease);flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);background:rgba(6,10,18,.45);}
.faq-a p{margin:0;padding:0 20px 20px;color:var(--text-2);font-size:14.5px;line-height:1.8;}
.faq-item.is-open .faq-a{max-height:340px;}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 88px;}
.cta-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:28px;align-items:center;
  padding:38px 36px;border:1px solid var(--line-glow);border-radius:var(--radius-panel);
  background:var(--surface-solid);box-shadow:var(--shadow-card);
}
.cta-card::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 260px at 8% 0%,rgba(35,209,180,.14),transparent 62%);
  pointer-events:none;
}
.cta-card > *{position:relative;}
.cta-card h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px;}
.cta-card p{margin:0;color:var(--text-2);font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ---------- 分类导航卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.cat-card{
  display:flex;flex-direction:column;gap:8px;padding:20px;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);backdrop-filter:blur(14px) saturate(140%);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--line-glow);}
.cat-card h3{font-size:16.5px;}
.cat-card p{margin:0;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.cat-card .cat-index{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.cat-card.is-current{border-color:var(--line-glow);box-shadow:0 0 0 1px var(--line-glow);}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(10,17,32,.9),rgba(6,10,18,1));
  padding:64px 0 28px;margin-top:20px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-glow),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;margin-bottom:14px;font-size:16px;}
.foot-col p{color:var(--text-2);font-size:14px;line-height:1.8;margin:0;max-width:340px;}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{color:var(--text-2);font-size:14px;}
.foot-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.foot-contact{display:flex;flex-direction:column;gap:12px;}
.foot-contact li{display:flex;gap:10px;color:var(--text-2);font-size:14px;line-height:1.7;}
.foot-contact i{color:var(--primary);margin-top:5px;font-size:13px;flex:0 0 auto;}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.foot-bottom .links{display:flex;flex-wrap:wrap;gap:18px;align-items:center;}
.foot-bottom a{color:var(--text-3);}
.foot-bottom a:hover{color:var(--primary);}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line-glow);
  background:var(--surface-solid);color:var(--primary);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  box-shadow:0 12px 28px rgba(0,0,0,.45);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(35,209,180,.14);}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .24s var(--ease),transform .24s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps-ol{grid-template-columns:repeat(2,minmax(0,1fr));}
  .update-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  .brand-bar{height:60px;}
  .nav-toggle{display:inline-flex;}
  .search-box{display:none;}
  .brand-actions .btn-ghost{display:none;}
  .hero-cat-inner{grid-template-columns:1fr;gap:34px;}
  .anchor-bar{top:112px;}
  .section{padding:64px 0;}
  .cta-band{padding-bottom:64px;}
  .cta-card{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .brand-actions .btn-primary{display:none;}
  .channel-meta{display:none;}
  .faq-grid{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .steps-ol{grid-template-columns:1fr;}
  .update-list{grid-template-columns:1fr;}
  .cat-grid{grid-template-columns:1fr;}
  .scene-row{grid-template-columns:1fr;gap:12px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .section{padding:48px 0;}
  .cta-band{padding-bottom:48px;}
  .cta-card{padding:26px 20px;}
  .anchor-bar{position:static;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .hero-cat h1{font-size:26px;}
  .hero-cta .btn{width:100%;}
  .hero-icons span{width:40px;height:40px;border-radius:12px;font-size:15px;}
  .card-body h3{font-size:17px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;
  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px var(--line-glow),0 8px 26px rgba(35,209,180,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-ink);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
::selection{background:rgba(35,209,180,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--deep{background:var(--bg-deep)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.8vw,32px);position:relative;padding-left:18px;margin-bottom:14px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:.86em;
  border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.section-head p{color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--primary);
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--primary);border-radius:2px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#04231E;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--line-glow),0 14px 34px rgba(35,209,180,.34);filter:brightness(1.06);color:#04231E}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--line-glow);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-danger{background:rgba(242,106,106,.14);border-color:rgba(242,106,106,.35);color:#FFB4B4}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.btn.is-loading{opacity:.7;pointer-events:none}

/* 标签与徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 9px;
  border-radius:6px;font-size:12px;font-weight:600;line-height:1;
  background:rgba(35,209,180,.12);color:var(--primary);letter-spacing:.02em;
}
.badge-accent{background:rgba(255,154,60,.14);color:var(--accent)}
.badge-mute{background:rgba(255,255,255,.06);color:var(--text-2)}
.tag{font-size:13px;color:var(--text-3)}

/* 头部 */
.site-header{position:sticky;top:0;z-index:80;background:rgba(6,10,18,.82);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%)}
.brand-bar{border-bottom:1px solid transparent;transition:height .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);height:64px;overflow:hidden}
.brand-inner{display:flex;align-items:center;gap:18px;height:64px}
.site-header.is-condensed .brand-bar{height:0;border-color:transparent}
.site-header.is-scrolled{background:rgba(6,10,18,.94);border-bottom:1px solid var(--line-glow)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04231E;font-size:13px;font-weight:800;letter-spacing:.04em;
  box-shadow:0 6px 18px rgba(35,209,180,.28);
}
.brand-name{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.search-box{
  flex:1 1 auto;max-width:360px;display:flex;align-items:center;gap:10px;
  height:40px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18)}
.search-box i{color:var(--text-3);font-size:14px}
.search-box input{flex:1;background:none;border:0;outline:none;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:var(--text-3)}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--line-glow);color:var(--primary)}
.channel-bar{border-bottom:1px solid var(--line);transition:border-color .2s var(--ease)}
.channel-inner{display:flex;align-items:center;gap:20px;height:52px}
.channel-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1}
.channel-list::-webkit-scrollbar{display:none}
.channel-link{
  display:inline-flex;align-items:center;height:32px;padding:0 13px;
  border-radius:9px;font-size:14px;color:var(--text-2);white-space:nowrap;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.channel-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
.channel-link.is-active{background:rgba(35,209,180,.13);color:var(--primary);font-weight:600}
.channel-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap}
.channel-meta .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(52,211,153,.14)}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.66);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s;z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:95;
  background:var(--surface-solid);border-left:1px solid var(--line);
  padding:22px 20px 32px;overflow-y:auto;
  transform:translateX(102%);transition:transform .24s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.drawer-close:hover{color:var(--primary);border-color:var(--line-glow)}
.drawer-title{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin:22px 0 10px}
.drawer-search{display:flex;align-items:center;gap:10px;height:42px;padding:0 12px;border-radius:var(--radius-input);background:rgba(255,255,255,.04);border:1px solid var(--line);margin-bottom:6px}
.drawer-search input{flex:1;background:none;border:0;outline:none;font-size:14px}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{padding:11px 12px;border-radius:10px;font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drawer-links a.is-active{background:rgba(35,209,180,.12);color:var(--primary);border-color:var(--line-glow);font-weight:600}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.drawer-tags a{font-size:13px;padding:6px 11px;border-radius:999px;background:rgba(255,255,255,.05);color:var(--text-2)}
.drawer-tags a:hover{color:var(--primary);background:rgba(35,209,180,.12)}
.drawer-cta{margin-top:26px;display:flex;flex-direction:column;gap:10px}
.drawer-cta .btn{width:100%}

/* 面包屑 */
.crumb{padding:22px 0 0;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li::after{content:"/";margin-left:8px;color:rgba(255,255,255,.18)}
.crumb li:last-child::after{display:none}
.crumb a:hover{color:var(--primary)}
.crumb .current{color:var(--text-2)}

/* 小 Hero */
.page-hero{position:relative;padding:36px 0 64px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(900px 420px at 12% 0%,rgba(35,209,180,.14),transparent 62%),
    radial-gradient(700px 380px at 92% 12%,rgba(255,154,60,.08),transparent 66%),
    linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.96)),
    url("/assets/images/backpic/back-1.webp");
  background-size:auto,auto,auto,cover;
  background-position:center;
  opacity:.95;
  pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.05;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);line-height:1.28;letter-spacing:-.01em;margin:14px 0 16px}
.hero-sub{font-size:16px;color:var(--text-2);max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-visual{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:12px;box-shadow:var(--shadow-card);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.browser-frame{border-radius:14px;overflow:hidden;background:#0B1424;border:1px solid var(--line)}
.browser-bar{display:flex;align-items:center;gap:6px;padding:9px 12px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--line)}
.browser-bar span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.16)}
.browser-bar span:first-child{background:rgba(242,106,106,.5)}
.browser-bar span:nth-child(2){background:rgba(245,196,81,.5)}
.browser-bar span:nth-child(3){background:rgba(52,211,153,.5)}
.browser-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* 锚点条 */
.anchor-bar{
  position:sticky;top:52px;z-index:60;
  background:rgba(10,17,32,.92);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.anchor-inner{display:flex;align-items:center;gap:12px;padding:12px 0}
.filter-chips{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1}
.filter-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 15px;
  border-radius:999px;font-size:14px;color:var(--text-2);white-space:nowrap;
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.16)}
.chip.is-active{background:rgba(35,209,180,.14);border-color:var(--line-glow);color:var(--primary);font-weight:600}
.chip .count{font-size:12px;font-variant-numeric:tabular-nums;color:var(--text-3)}
.chip.is-active .count{color:var(--primary)}
.anchor-hint{font-size:13px;color:var(--text-3);white-space:nowrap}

/* 主体 */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-glow)}
.faq-item.is-open{border-color:var(--line-glow);box-shadow:0 12px 30px rgba(0,0,0,.34)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;text-align:left;
  padding:18px 20px;font-size:17px;font-weight:600;line-height:1.5;color:var(--text);
}
.faq-q .no{
  flex:0 0 auto;font-size:13px;font-weight:700;color:var(--primary);
  background:rgba(35,209,180,.12);border-radius:6px;padding:2px 8px;margin-top:2px;
  font-variant-numeric:tabular-nums;
}
.faq-q .arrow{margin-left:auto;flex:0 0 auto;color:var(--text-3);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);color:var(--primary)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-body{
  padding:0 20px 20px 20px;color:var(--text-2);font-size:15px;line-height:1.8;
  border-top:1px solid var(--line);margin:0 0 0 0;padding-top:16px;
}
.faq-a-body strong{color:var(--text);font-weight:600}
.faq-a-body ul{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.faq-a-body li{position:relative;padding-left:16px}
.faq-a-body li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--primary);opacity:.7}
.empty-state{
  display:none;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:rgba(255,255,255,.02);color:var(--text-2);
}
.empty-state.is-show{display:flex}
.empty-state i{font-size:28px;color:var(--text-3)}

/* 侧栏 */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--primary);font-size:14px}
.side-list{display:flex;flex-direction:column;gap:10px}
.side-list a{display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:6px 0;border-bottom:1px dashed rgba(255,255,255,.06)}
.side-list a:last-child{border-bottom:0}
.side-list a:hover{color:var(--primary)}
.side-list .idx{color:var(--text-3);font-variant-numeric:tabular-nums;font-size:13px}
.check-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2)}
.check-list li{display:flex;gap:9px;align-items:flex-start}
.check-list i{color:var(--primary);font-size:13px;margin-top:6px}
.side-note{font-size:13px;color:var(--text-3);line-height:1.7;margin-top:12px}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 20px;position:relative;
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.step:hover{transform:translateY(-2px);border-color:var(--line-glow)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:50%;border:1px solid var(--line-glow);color:var(--primary);
  font-weight:700;font-variant-numeric:tabular-nums;margin-bottom:14px;background:rgba(35,209,180,.08);
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.75}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-panel);
  border:1px solid var(--line-glow);padding:40px;
  background:
    radial-gradient(600px 260px at 8% 0%,rgba(35,209,180,.16),transparent 60%),
    linear-gradient(135deg,rgba(16,26,44,.95),rgba(10,17,32,.95));
  display:grid;grid-template-columns:1.4fr auto;gap:28px;align-items:center;
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px}
.cta-band p{color:var(--text-2);font-size:15px;max-width:640px}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* 分类卡 */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cat-card:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-card)}
.cat-card.is-current{border-color:var(--line-glow);box-shadow:0 0 0 1px var(--line-glow)}
.cat-thumb{aspect-ratio:16/9;overflow:hidden;background:#0B1424}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.cat-card:hover .cat-thumb img{transform:scale(1.03)}
.cat-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-body h3{font-size:16px;line-height:1.45}
.cat-body p{font-size:13px;color:var(--text-2);line-height:1.7;margin:0}
.cat-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);padding-top:8px}
.cat-foot .go{color:var(--primary);display:inline-flex;align-items:center;gap:6px;font-weight:600}

/* 表单 */
.form-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:28px;backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px}
.field .req{color:var(--accent)}
.field input[type="text"],.field input[type="tel"],.field input[type="email"],.field select,.field textarea{
  width:100%;padding:11px 13px;border-radius:var(--radius-input);
  background:rgba(6,10,18,.62);border:1px solid var(--line);color:var(--text);
  font-size:15px;outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.2)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger);box-shadow:0 0 0 2px rgba(242,106,106,.16)}
.field .err{display:none;margin-top:6px;font-size:13px;color:var(--danger)}
.field.has-error .err{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-2);margin:6px 0 18px}
.check-row input{width:16px;height:16px;margin-top:5px;accent-color:var(--primary);flex:0 0 auto}
.check-row.has-error{color:var(--danger)}
.form-success{
  display:none;align-items:center;gap:10px;margin-top:16px;padding:12px 14px;
  border-radius:var(--radius-input);border:1px solid rgba(52,211,153,.34);
  background:rgba(52,211,153,.1);color:#A7F3D0;font-size:14px;
}
.form-success.is-show{display:flex}
.form-tip{font-size:13px;color:var(--text-3);margin-top:14px}
.info-list{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.info-item{display:flex;gap:14px}
.info-item i{color:var(--primary);font-size:16px;margin-top:6px}
.info-item h3{font-size:16px;margin-bottom:4px}
.info-item p{font-size:14px;color:var(--text-2);margin:0}

/* 页脚 */
.site-footer{background:var(--bg-deep);border-top:1px solid transparent;position:relative;padding:64px 0 28px;margin-top:0}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,209,180,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;margin-bottom:14px}
.foot-col p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
.foot-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2)}
.foot-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.foot-contact{display:flex;flex-direction:column;gap:11px}
.foot-contact li{display:flex;gap:9px;font-size:13px;color:var(--text-2);line-height:1.7}
.foot-contact i{color:var(--primary);font-size:12px;margin-top:6px}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.foot-bottom .links{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
.foot-bottom a{color:var(--text-3)}
.foot-bottom a:hover{color:var(--primary)}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-solid);border:1px solid var(--line-glow);color:var(--primary);
  box-shadow:0 12px 30px rgba(0,0,0,.45);opacity:0;visibility:hidden;
  transition:opacity .2s var(--ease),visibility .2s var(--ease),transform .2s var(--ease);z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible}
.to-top:hover{transform:translateY(-2px)}

/* 进场动画 */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .side-col{order:2}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .search-box{display:none}
  .nav-toggle{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .form-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero{padding:24px 0 48px}
  .brand-name{font-size:14px}
  .brand-actions .btn{display:none}
  .brand-actions .btn.btn-primary{display:inline-flex}
  .anchor-bar{top:52px}
  .anchor-hint{display:none}
  .steps{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr}
  .faq-q{font-size:15.5px;padding:16px}
  .faq-a-body{padding:14px 16px 18px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .to-top{right:14px;bottom:18px}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .cta-band{padding:24px}
  .cta-band .btn{width:100%}
  .form-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg-ink:#060A12;
  --bg-deep:#0A1120;
  --surface:rgba(18,28,46,.72);
  --surface-solid:#101A2C;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(35,209,180,.28);
  --primary:#23D1B4;
  --primary-deep:#0E8F7C;
  --accent:#FF9A3C;
  --text:#E7EEF7;
  --text-2:#9AA9BF;
  --text-3:#6B7C94;
  --ok:#34D399;
  --warn:#F5C451;
  --danger:#F26A6A;
  --radius-panel:20px;
  --radius-card:16px;
  --radius-input:10px;
  --radius-btn:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px var(--line-glow),0 8px 26px rgba(35,209,180,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-ink);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--primary);}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.hl{color:var(--primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{color:#04140F;transform:translateY(-2px);box-shadow:0 0 0 1px var(--line-glow),0 14px 34px rgba(35,209,180,.34);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--line);
  color:var(--text);
}
.btn-ghost:hover{color:var(--primary);border-color:var(--line-glow);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-danger{background:rgba(242,106,106,.14);border-color:rgba(242,106,106,.4);color:#FFB4B4;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:120;}
.brand-bar{
  height:64px;background:rgba(6,10,18,.9);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .2s var(--ease),opacity .2s var(--ease),border-color .2s var(--ease);
  overflow:hidden;
}
.brand-inner{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04140F;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 6px 18px rgba(35,209,180,.28);
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;}
.search-box{
  display:flex;align-items:center;gap:10px;flex:1;max-width:420px;
  height:40px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box i{color:var(--text-3);font-size:13px;}
.search-box input{
  flex:1;background:none;border:none;outline:none;font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.18);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);color:var(--text-2);
}
.nav-toggle:hover{color:var(--primary);border-color:var(--line-glow);}
.channel-bar{
  height:52px;background:rgba(10,17,32,.94);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease);
}
.channel-inner{display:flex;align-items:center;gap:20px;height:52px;}
.channel-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;flex:1;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-link{
  display:inline-block;padding:7px 14px;border-radius:var(--radius-btn);
  font-size:14px;color:var(--text-2);white-space:nowrap;
  border:1px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.channel-link:hover{color:var(--primary);background:rgba(35,209,180,.08);}
.channel-link.is-active{color:var(--primary);background:rgba(35,209,180,.12);border-color:var(--line-glow);}
.channel-meta{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);white-space:nowrap;
}
.channel-meta .dot{
  width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 4px rgba(52,211,153,.14);
}
.site-header.is-scrolled .brand-bar{height:0;opacity:0;border-color:transparent;}
.site-header.is-scrolled .channel-bar{border-color:var(--line-glow);}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(340px,86vw);z-index:200;
  background:rgba(9,15,27,.98);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s var(--ease);
  padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);color:var(--text-2);}
.drawer-title{font-size:13px;color:var(--text-3);margin:22px 0 10px;letter-spacing:.06em;}
.drawer .search-box{max-width:none;width:100%;margin-bottom:6px;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{padding:11px 14px;border-radius:12px;font-size:15px;color:var(--text-2);border:1px solid transparent;}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--primary);background:rgba(35,209,180,.1);border-color:var(--line-glow);}
.drawer-cta{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.drawer-cta .btn{width:100%;}
.scrim{
  position:fixed;inset:0;background:rgba(3,6,12,.66);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
}
.scrim.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;}
.crumb-list{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.crumb-list a{color:var(--text-2);}
.crumb-list a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.crumb-list .sep{color:var(--text-3);}
.crumb-list .current{color:var(--text);}

/* ============ 小 Hero ============ */
.hero{
  position:relative;padding:44px 0 56px;overflow:hidden;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 420px at 12% 0%,rgba(35,209,180,.14),transparent 70%),
    radial-gradient(700px 380px at 88% 20%,rgba(255,154,60,.08),transparent 70%),
    linear-gradient(180deg,rgba(6,10,18,.86),rgba(6,10,18,.96));
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.35) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.35) 1px,transparent 1px);
  background-size:44px 44px;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:6px;font-size:13px;
  background:rgba(35,209,180,.12);color:var(--primary);border:1px solid var(--line-glow);
  margin-bottom:16px;
}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);font-weight:700;line-height:1.28;letter-spacing:-.01em;
  margin-bottom:14px;
}
.hero-sub{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:22px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.trust-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:600px;}
.trust-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:12px 14px;-webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.trust-item b{display:block;font-size:22px;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.3;}
.trust-item span{font-size:13px;color:var(--text-3);}
.hero-visual{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:14px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.window-bar{display:flex;align-items:center;gap:8px;padding:2px 4px 12px;}
.window-bar i{width:10px;height:10px;border-radius:50%;background:var(--line);display:block;}
.window-bar i:first-child{background:rgba(242,106,106,.6);}
.window-bar i:nth-child(2){background:rgba(245,196,81,.6);}
.window-bar i:nth-child(3){background:rgba(52,211,153,.6);}
.window-bar span{margin-left:auto;font-size:12px;color:var(--text-3);}
.hero-visual img{border-radius:var(--radius-card);aspect-ratio:16/10;object-fit:cover;width:100%;height:auto;}

/* ============ 锚点条 ============ */
.anchor-bar{
  position:sticky;top:52px;z-index:110;
  background:rgba(8,13,24,.92);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;align-items:center;gap:8px;height:52px;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner a{
  padding:6px 14px;border-radius:var(--radius-btn);font-size:14px;color:var(--text-2);
  border:1px solid var(--line);white-space:nowrap;
}
.anchor-inner a:hover{color:var(--primary);border-color:var(--line-glow);background:rgba(35,209,180,.08);}
.anchor-inner .label{font-size:13px;color:var(--text-3);margin-right:6px;white-space:nowrap;}

/* ============ 区块通用 ============ */
.section{padding:72px 0;}
.section.alt{background:var(--bg-deep);}
.sec-head{margin-bottom:32px;max-width:760px;}
.sec-title{font-size:clamp(22px,2.8vw,32px);line-height:1.35;position:relative;padding-left:16px;}
.sec-title::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:.86em;
  border-radius:3px;background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.sec-desc{margin-top:12px;color:var(--text-2);font-size:15.5px;}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start;}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:34px;}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,rgba(35,209,180,.55),rgba(35,209,180,.06));
}
.tl-item{position:relative;margin-bottom:20px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-31px;top:24px;width:12px;height:12px;border-radius:50%;
  background:var(--bg-ink);border:2px solid var(--primary);
  box-shadow:0 0 0 5px rgba(35,209,180,.12);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.tl-card:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px;}
.tl-step{
  font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--primary);
  border:1px solid var(--line-glow);background:rgba(35,209,180,.1);
  padding:2px 9px;border-radius:6px;font-variant-numeric:tabular-nums;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:6px;font-size:12.5px;
}
.badge-time{background:rgba(255,255,255,.06);color:var(--text-2);font-variant-numeric:tabular-nums;}
.badge-ok{background:rgba(52,211,153,.12);color:var(--ok);}
.badge-warn{background:rgba(255,154,60,.14);color:var(--accent);}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.tl-card p{color:var(--text-2);font-size:15px;margin-bottom:12px;}
.check-list{display:flex;flex-direction:column;gap:8px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.check-list i{color:var(--primary);font-size:13px;margin-top:7px;}

/* ============ 侧栏目录 ============ */
.side-panel{
  position:sticky;top:120px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:20px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.side-panel h3{font-size:15px;margin-bottom:14px;color:var(--text);}
.side-nav{display:flex;flex-direction:column;gap:2px;}
.side-nav a{
  display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);border-left:2px solid transparent;
}
.side-nav a:hover{color:var(--primary);background:rgba(35,209,180,.07);border-left-color:var(--primary);}
.side-nav a.is-active{color:var(--primary);background:rgba(35,209,180,.1);border-left-color:var(--primary);}
.side-note{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.side-note i{color:var(--accent);margin-right:6px;}

/* ============ 风险清单 ============ */
.risk-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.risk-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.risk-card:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.risk-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(35,209,180,.12);color:var(--primary);font-size:17px;margin-bottom:14px;
  border:1px solid var(--line-glow);
}
.risk-icon.warn{background:rgba(255,154,60,.12);color:var(--accent);border-color:rgba(255,154,60,.3);}
.risk-card h3{font-size:18px;margin-bottom:8px;}
.risk-card p{color:var(--text-2);font-size:14.8px;}

/* ============ 异常列表 ============ */
.issue-list{display:flex;flex-direction:column;gap:14px;}
.issue-item{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.issue-item:hover{border-color:var(--line-glow);transform:translateY(-2px);}
.issue-no{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1.5px dashed var(--line-glow);color:var(--primary);font-weight:700;
  font-size:15px;font-variant-numeric:tabular-nums;
}
.issue-item h3{font-size:17px;margin-bottom:6px;}
.issue-item p{color:var(--text-2);font-size:14.8px;}
.issue-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12.5px;background:rgba(255,255,255,.06);color:var(--text-2);
}
.tag-primary{background:rgba(35,209,180,.12);color:var(--primary);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  background:var(--surface);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s var(--ease);
}
.faq-item.is-open{border-color:var(--line-glow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16.5px;font-weight:600;line-height:1.5;
}
.faq-q i{color:var(--primary);font-size:14px;transition:transform .22s var(--ease);flex-shrink:0;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s var(--ease);
  background:rgba(6,10,18,.5);
}
.faq-a-inner{padding:16px 20px 20px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ============ CTA ============ */
.cta-band{
  background:
    radial-gradient(700px 320px at 8% 10%,rgba(35,209,180,.16),transparent 68%),
    radial-gradient(600px 300px at 92% 90%,rgba(255,154,60,.12),transparent 70%),
    var(--bg-deep);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;max-width:520px;}
.cta-points{margin-top:18px;display:flex;flex-direction:column;gap:8px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);}
.cta-points i{color:var(--primary);font-size:13px;margin-top:7px;}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:26px;box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.form-row{margin-bottom:14px;}
.form-row label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:7px;}
.form-control{
  width:100%;height:44px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text);font-size:14.5px;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
textarea.form-control{height:92px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-control::placeholder{color:var(--text-3);}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(35,209,180,.2);}
.form-control.is-error{border-color:var(--danger);box-shadow:0 0 0 2px rgba(242,106,106,.16);}
.form-error{display:none;margin-top:6px;font-size:12.5px;color:var(--danger);}
.form-error.is-show{display:block;}
.form-check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);margin:16px 0;}
.form-check input{width:16px;height:16px;margin-top:5px;accent-color:var(--primary);flex-shrink:0;}
.form-check a{color:var(--primary);}
.form-submit{width:100%;}
.form-tip{margin-top:12px;font-size:12.5px;color:var(--text-3);text-align:center;}
.form-success{
  display:none;margin-top:14px;padding:12px 14px;border-radius:12px;
  background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.3);
  color:var(--ok);font-size:14px;
}
.form-success.is-show{display:block;}

/* ============ 分类卡组 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.cat-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.cat-card:hover{border-color:var(--line-glow);transform:translateY(-3px);box-shadow:var(--shadow-card);}
.cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease);}
.cat-card:hover img{transform:scale(1.03);}
.cat-body{padding:16px 18px 18px;}
.cat-body h3{font-size:16.5px;margin-bottom:8px;}
.cat-body p{font-size:13.8px;color:var(--text-2);line-height:1.7;margin:0;}
.cat-card.is-current{border-color:var(--line-glow);box-shadow:0 0 0 1px var(--line-glow);}
.cat-card.is-current .cat-body h3{color:var(--primary);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-ink);border-top:1px solid var(--line);padding:56px 0 26px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(35,209,180,.5),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:32px;}
.foot-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px;}
.foot-col p{font-size:14px;color:var(--text-2);line-height:1.8;}
.foot-col h4{font-size:14.5px;margin-bottom:14px;color:var(--text);}
.foot-links{display:flex;flex-direction:column;gap:9px;}
.foot-links a{font-size:14px;color:var(--text-2);}
.foot-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.foot-contact{display:flex;flex-direction:column;gap:10px;}
.foot-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;}
.foot-contact i{color:var(--primary);font-size:13px;margin-top:7px;}
.foot-bottom{
  margin-top:40px;padding-top:20px;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-3);
}
.foot-bottom .links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.foot-bottom a:hover{color:var(--primary);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:14px;z-index:130;
  display:grid;place-items:center;color:var(--primary);
  background:rgba(16,26,44,.92);border:1px solid var(--line-glow);
  box-shadow:0 8px 26px rgba(35,209,180,.2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(35,209,180,.16);}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .risk-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  .search-box{max-width:280px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-visual{max-width:620px;}
  .layout{grid-template-columns:1fr;gap:32px;}
  .side-panel{position:static;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .brand-name{font-size:15px;}
  .search-box{display:none;}
  .brand-actions .btn-ghost{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .channel-meta{display:none;}
  .section{padding:48px 0;}
  .hero{padding:30px 0 42px;}
  .anchor-bar{top:52px;}
  .timeline{padding-left:26px;}
  .timeline::before{left:7px;}
  .tl-item::before{left:-23px;width:10px;height:10px;}
  .trust-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .risk-grid{grid-template-columns:1fr;}
  .cat-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .form-card{padding:20px;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%;}
  .trust-row{grid-template-columns:1fr;}
  .issue-item{grid-template-columns:36px minmax(0,1fr);gap:12px;padding:16px;}
  .issue-no{width:36px;height:36px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}