/* roulang page: index */
:root{
  --bg-0:#07090F;
  --bg-1:#0D111A;
  --bg-2:#141A26;
  --bg-3:#1C2331;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#38E1C6;
  --neon-soft:rgba(56,225,198,.14);
  --neon-glow:rgba(56,225,198,.35);
  --ember:#FF6A3D;
  --amber:#FFC24B;
  --text-1:#EAF0F6;
  --text-2:#A7B2C0;
  --text-3:#6C7787;
  --ok:#4ADE80;
  --warn:#FFB020;
  --err:#FF5C5C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 18px 40px rgba(56,225,198,.18);
  --ease:cubic-bezier(.4,0,.2,1);
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  --sp-6:32px; --sp-7:48px; --sp-8:64px; --sp-9:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:.01em;}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
h3{font-size:19px;font-weight:600;line-height:1.4;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,225,198,.25);border-color:var(--neon)!important;}
.container{max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px;}
.section-head h2 span{display:block;width:44px;height:3px;background:linear-gradient(90deg,var(--neon),transparent);margin-bottom:14px;border-radius:2px;}
.link-more{color:var(--neon);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:color 200ms var(--ease),transform 200ms var(--ease);}
.link-more:hover{color:#6ef3dd;transform:translateX(3px);}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,9,15,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{content:"";display:block;height:1px;background:linear-gradient(90deg,var(--neon),rgba(56,225,198,.25) 34%,transparent 72%);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.02em;transition:opacity 200ms var(--ease);}
.logo:hover{opacity:.86;}
.logo-mark{width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--neon),rgba(56,225,198,.25));box-shadow:0 0 16px rgba(56,225,198,.45);position:relative;flex:none;}
.logo-mark::after{content:"";position:absolute;inset:6px;border-radius:3px;background:var(--bg-0);}
.logo-text{color:var(--text-1);}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  color:var(--text-2);font-size:15px;border-radius:8px;
  transition:color 200ms var(--ease),background 200ms var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(56,225,198,.45);}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--neon);border-radius:2px;box-shadow:0 0 10px var(--neon-glow);}
.header-actions{display:flex;align-items:center;gap:12px;}
.menu-btn{display:none;}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;background:transparent;color:var(--text-1);
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--neon);color:#06120F;box-shadow:0 0 0 1px rgba(56,225,198,.5),0 8px 22px rgba(56,225,198,.22);}
.btn-primary:hover{background:#5af0d8;box-shadow:0 8px 24px rgba(56,225,198,.35);}
.btn-ghost{border-color:var(--neon);color:var(--neon);}
.btn-ghost:hover{background:var(--neon-soft);}
.btn-plain{border-color:var(--line-strong);color:var(--text-2);}
.btn-plain:hover{color:var(--text-1);border-color:var(--text-3);background:rgba(255,255,255,.04);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:color 200ms var(--ease),border-color 200ms var(--ease),background 200ms var(--ease);
}
.icon-btn:hover{color:var(--neon);border-color:var(--neon);background:var(--neon-soft);}

/* ============ badge / tag ============ */
.tag{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:var(--radius-pill);
  background:var(--neon-soft);color:var(--neon);
  font-size:12px;font-weight:500;letter-spacing:.06em;line-height:1.6;
}
.tag--ember{background:rgba(255,106,61,.14);color:var(--ember);}
.time-tag{color:var(--amber);font-size:13px;font-variant-numeric:tabular-nums;display:inline-flex;align-items:center;gap:5px;}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:30px;height:26px;padding:0 7px;border-radius:8px;
  border:1px solid rgba(255,106,61,.55);color:var(--ember);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;background:rgba(7,9,15,.75);
}

/* ============ hero ============ */
.hero{position:relative;overflow:hidden;padding:96px 0 72px;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 30%;opacity:.34;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 420px at 82% 18%,rgba(56,225,198,.16),transparent 62%),
    linear-gradient(90deg,#07090F 6%,rgba(7,9,15,.9) 46%,rgba(7,9,15,.6) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-copy{max-width:620px;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background:rgba(13,17,26,.7);font-size:13px;color:var(--text-2);letter-spacing:.06em;margin-bottom:22px;}
.hero-eyebrow i{color:var(--neon);}
.hero h1{margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--neon);text-shadow:0 0 22px rgba(56,225,198,.28);}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.8;margin-bottom:30px;max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{position:relative;}
.hero-cover{
  position:relative;border-radius:16px;overflow:hidden;
  border:1px solid rgba(56,225,198,.4);
  box-shadow:0 24px 60px rgba(0,0,0,.6),0 0 0 1px rgba(56,225,198,.12),0 0 40px rgba(56,225,198,.14);
  aspect-ratio:3/4;background:var(--bg-2);
}
.hero-cover img{width:100%;height:100%;object-fit:cover;}
.hero-cover figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 18px;
  background:linear-gradient(0deg,rgba(7,9,15,.94),rgba(7,9,15,0));
  font-size:13px;color:var(--text-2);
}

/* ============ metrics ============ */
.metrics{position:relative;z-index:3;margin-top:-34px;}
.metrics-inner{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.metric{background:var(--bg-1);padding:22px 24px;}
.metric dt{font-size:13px;color:var(--text-3);letter-spacing:.06em;margin-bottom:6px;}
.metric dd{margin:0;font-size:26px;font-weight:800;color:var(--neon);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.metric dd small{font-size:14px;color:var(--text-2);font-weight:500;margin-left:4px;}

/* ============ filters ============ */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.filter-pill{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--bg-1);
  color:var(--text-2);font-size:14px;transition:all 200ms var(--ease);
}
.filter-pill:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--bg-2);}
.filter-pill.is-active{color:var(--neon);border-color:rgba(56,225,198,.5);background:var(--neon-soft);}

/* ============ card A : collection ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);box-shadow:var(--shadow-hover);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-3);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .num-badge{position:absolute;top:12px;left:12px;}
.card-body{padding:20px 22px 22px;}
.card-body h3{margin-bottom:10px;}
.card-body h3 a{transition:color 200ms var(--ease);}
.card-body h3 a:hover{color:var(--neon);}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.card-meta .arrow{color:var(--neon);transition:transform 200ms var(--ease);}
.card:hover .card-meta .arrow{transform:translateX(4px);}

/* ============ featured ============ */
.featured{display:grid;grid-template-columns:1.45fr 1fr;gap:32px;align-items:start;}
.feature-main{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-card);transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);}
.feature-main:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);box-shadow:var(--shadow-hover);}
.feature-main figure{position:relative;aspect-ratio:16/9;margin:0;overflow:hidden;background:var(--bg-3);}
.feature-main figure img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease);}
.feature-main:hover figure img{transform:scale(1.04);}
.feature-main .feature-tag{position:absolute;top:14px;left:14px;}
.feature-main .feature-body{padding:24px 26px 26px;}
.feature-main h3{font-size:22px;line-height:1.45;margin-bottom:12px;}
.feature-main p{color:var(--text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.feature-main .feature-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.feature-list{display:flex;flex-direction:column;gap:14px;}
.feature-item{
  display:flex;gap:16px;align-items:flex-start;padding:16px 18px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color 200ms var(--ease),transform 200ms var(--ease),background 200ms var(--ease);
}
.feature-item:hover{border-color:rgba(56,225,198,.45);transform:translateY(-2px);background:var(--bg-2);}
.feature-item h4{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.feature-item h4 a:hover{color:var(--neon);}
.feature-item .meta{font-size:13px;color:var(--text-3);}

/* ============ cms post list ============ */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.post-card{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-card);
  transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);box-shadow:var(--shadow-hover);}
.post-card h3{font-size:17px;line-height:1.55;margin-bottom:10px;}
.post-card .post-excerpt{
  color:var(--text-2);font-size:14.5px;line-height:1.8;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line);}
.post-meta .left{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.post-more{color:var(--neon);font-size:13px;font-weight:500;display:inline-flex;align-items:center;gap:6px;transition:transform 200ms var(--ease);}
.post-card:hover .post-more{transform:translateX(3px);}
.empty-state{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);background:var(--bg-1);
  color:var(--text-2);text-align:center;padding:40px 24px;
}
.empty-state i{font-size:30px;color:var(--text-3);}
.empty-state p{font-size:15px;}

/* ============ rail ============ */
.rail-wrap{position:relative;}
.rail{display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;scroll-snap-type:x mandatory;scrollbar-width:thin;}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px;}
.rail-item{
  flex:0 0 276px;scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform 200ms var(--ease),border-color 200ms var(--ease);
}
.rail-item:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);}
.rail-item img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--bg-3);}
.rail-item .rail-body{padding:16px 18px 18px;}
.rail-item h3{font-size:15.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-item .meta{font-size:12.5px;color:var(--text-3);margin-top:10px;}

/* ============ cta band ============ */
.cta-band{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(120deg,var(--bg-2),var(--bg-1) 62%);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--neon),var(--ember));}
.cta-band h2{font-size:21px;margin-bottom:8px;}
.cta-band p{color:var(--text-2);font-size:14.5px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ faq ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  border:1px solid var(--line);border-radius:12px;background:var(--bg-1);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
  overflow:hidden;
}
.faq-item[open]{border-left:2px solid var(--neon);background:var(--bg-1);border-color:var(--line-strong);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .faq-icon{
  flex:none;width:24px;height:24px;border-radius:7px;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--neon);font-size:13px;
  transition:transform 200ms var(--ease);
}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);}
.faq-answer{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:68ch;}

/* ============ footer ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(56,225,198,.55),transparent);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px;padding:64px 0 40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{color:var(--text-2);font-size:14px;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text-1);letter-spacing:.06em;margin-bottom:16px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--text-2);font-size:14px;transition:color 200ms var(--ease);}
.footer-col a:hover{color:var(--neon);}
.subscribe-form{display:flex;flex-direction:column;gap:10px;margin-top:6px;}
.subscribe-form label{font-size:14px;color:var(--text-2);}
.subscribe-form .field{display:flex;gap:10px;flex-wrap:wrap;}
.subscribe-form input{
  flex:1 1 170px;min-height:44px;padding:0 14px;border-radius:var(--radius-btn);
  background:var(--bg-3);border:1px solid var(--line);color:var(--text-1);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{border-color:var(--neon);box-shadow:0 0 0 3px rgba(56,225,198,.25);outline:none;}
.form-msg{font-size:13px;min-height:18px;}
.form-msg.is-ok{color:var(--ok);}
.form-msg.is-err{color:var(--err);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);color:var(--text-3);font-size:13px;
}
.footer-bottom a{color:var(--text-3);transition:color 200ms var(--ease);}
.footer-bottom a:hover{color:var(--neon);}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border-radius:var(--radius-pill);border:1px solid var(--line-strong);color:var(--text-2);
  background:transparent;cursor:pointer;transition:all 200ms var(--ease);font-size:13px;
}
.to-top:hover{color:var(--neon);border-color:var(--neon);}

/* ============ drawer ============ */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform 240ms var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer a.drawer-link{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  color:var(--text-2);font-size:16px;border-left:3px solid transparent;
  transition:all 200ms var(--ease);
}
.drawer a.drawer-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.drawer a.drawer-link.is-active{color:var(--neon);border-left-color:var(--neon);background:var(--neon-soft);}
.drawer .btn{margin-top:16px;}
.scrim{
  position:fixed;inset:0;background:rgba(4,6,10,.66);z-index:70;opacity:0;visibility:hidden;
  transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.scrim.is-open{opacity:1;visibility:visible;}

/* ============ toast ============ */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  background:var(--bg-3);border:1px solid rgba(56,225,198,.45);color:var(--text-1);
  padding:12px 20px;border-radius:10px;font-size:14px;z-index:95;
  opacity:0;visibility:hidden;transition:all 200ms var(--ease);box-shadow:0 12px 30px rgba(0,0,0,.5);
}
.toast.is-show{opacity:1;visibility:visible;transform:translate(-50%,0);}

/* ============ responsive ============ */
@media (max-width:1279px){
  .hero-inner{gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:80px 0;}
  .main-nav{display:none;}
  .menu-btn{display:inline-flex;}
  .header-actions .btn{display:none;}
  .hero{padding:72px 0 56px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{max-width:340px;}
  .metrics-inner{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .featured{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .hero{padding:56px 0 48px;}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 100%;}
  .metrics{margin-top:-22px;}
  .metrics-inner{grid-template-columns:repeat(2,1fr);}
  .metric{padding:18px;}
  .metric dd{font-size:22px;}
  .grid-3{grid-template-columns:1fr;}
  .post-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:26px;align-items:flex-start;}
  .rail-item{flex:0 0 232px;}
  .cta-band{padding:22px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .feature-main .feature-body{padding:20px;}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px;}
}
@media (max-width:479px){
  h1{font-size:26px;}
  h2{font-size:21px;}
  .metrics-inner{grid-template-columns:1fr;}
  .hero-cover figcaption{font-size:12px;}
  .btn{padding:0 16px;font-size:14.5px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg-0:#07090F;
  --bg-1:#0D111A;
  --bg-2:#141A26;
  --bg-3:#1C2331;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#38E1C6;
  --neon-soft:rgba(56,225,198,.14);
  --neon-glow:rgba(56,225,198,.35);
  --ember:#FF6A3D;
  --amber:#FFC24B;
  --text-1:#EAF0F6;
  --text-2:#A7B2C0;
  --text-3:#6C7787;
  --ok:#4ADE80;
  --err:#FF5C5C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 14px 34px rgba(56,225,198,.18);
  --ease:cubic-bezier(.4,0,.2,1);
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--neon)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,225,198,.25);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{color:var(--text-2);font-size:14px;margin-top:8px}
.section-head .more-link{color:var(--neon);font-size:14px;display:inline-flex;align-items:center;gap:6px}
.section-head .more-link:hover{gap:10px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,9,15,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(56,225,198,0) 72%);
}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.02em;color:var(--text-1)}
.logo:hover{color:var(--text-1)}
.logo-mark{
  width:20px;height:20px;flex:0 0 20px;border-radius:6px;
  background:linear-gradient(135deg,var(--neon),rgba(56,225,198,.25));
  box-shadow:0 0 0 1px rgba(56,225,198,.5),0 0 16px rgba(56,225,198,.35);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:6px;border-radius:2px;background:var(--bg-0);
}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
  color:var(--text-2);font-size:15px;border-radius:8px;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:1px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform 200ms var(--ease);
}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{
  color:var(--neon);
  text-shadow:0 0 12px rgba(56,225,198,.45);
}
.nav-link.is-active::after{transform:scaleX(1);height:2px;box-shadow:0 0 10px rgba(56,225,198,.6)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line-strong);
  color:var(--text-1);font-size:18px;
}
.nav-toggle:hover{border-color:rgba(56,225,198,.45);color:var(--neon)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease),color 200ms var(--ease);
  border:1px solid transparent;
}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-primary{
  background:var(--neon);color:#06120F;
  box-shadow:0 0 0 1px rgba(56,225,198,.5);
}
.btn-primary:hover{background:#5BECD5;color:#06120F;box-shadow:0 8px 24px rgba(56,225,198,.35)}
.btn-outline{
  border-color:rgba(56,225,198,.55);color:var(--neon);background:transparent;
}
.btn-outline:hover{background:rgba(56,225,198,.12);color:var(--neon)}
.btn-ghost{color:var(--text-2);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--bg-2)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.icon-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-btn);border:1px solid var(--line-strong);color:var(--text-2);
}
.icon-btn:hover{color:var(--neon);border-color:rgba(56,225,198,.45)}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform 260ms var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:8px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer .nav-link{height:48px;width:100%;border-radius:8px;padding:0 14px}
.drawer .nav-link.is-active{background:var(--neon-soft);border-left:3px solid var(--neon)}
.drawer .nav-link.is-active::after{display:none}
.overlay{
  position:fixed;inset:0;background:rgba(3,5,9,.62);z-index:70;
  opacity:0;visibility:hidden;transition:opacity 200ms var(--ease),visibility 200ms var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible}

/* 阅读进度 */
.reading-progress{
  position:fixed;top:0;left:0;height:2px;width:0;z-index:90;
  background:linear-gradient(90deg,var(--neon),var(--ember));
  box-shadow:0 0 12px rgba(56,225,198,.55);
  transition:width 120ms linear;
}

/* 文章头部 */
.article-hero{
  position:relative;
  padding:56px 0 40px;
  background:
    radial-gradient(720px 340px at 12% -10%,rgba(56,225,198,.16),rgba(7,9,15,0) 70%),
    linear-gradient(180deg,var(--bg-1),var(--bg-0));
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:44px 44px;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;position:relative;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--neon)}
.breadcrumb .sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-2);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero .inner{max-width:860px;position:relative}
.article-title{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.3;letter-spacing:.01em;margin:16px 0 20px}
.article-meta{display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:var(--text-2);font-size:14px}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:8px}
.article-meta .time{color:var(--amber);font-variant-numeric:tabular-nums}
.share-mini{display:flex;align-items:center;gap:8px;margin-left:auto}

/* 标签/徽章 */
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  background:var(--neon-soft);color:var(--neon);
  font-size:12px;font-weight:500;letter-spacing:.06em;
}
.tag--ember{background:rgba(255,106,61,.12);color:var(--ember)}
.badge-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:28px;border-radius:8px;border:1px solid rgba(255,106,61,.55);
  color:var(--ember);font-size:12px;font-weight:600;letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}

/* 正文布局 */
.article-main{padding:56px 0 88px;background:var(--bg-0)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,760px) 232px;justify-content:center}
}
.article-body{max-width:760px;font-size:16.5px;line-height:1.9;color:var(--text-1)}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  font-size:clamp(20px,2.2vw,24px);font-weight:700;
  margin:40px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 12px rgba(56,225,198,.5);
}
.article-body h3{font-size:18px;font-weight:600;margin:28px 0 12px;color:var(--text-1)}
.article-body a{color:var(--neon);border-bottom:1px solid rgba(56,225,198,.35)}
.article-body a:hover{border-bottom-color:var(--neon)}
.article-body blockquote{
  margin:24px 0;padding:14px 20px;border-left:3px solid var(--neon);
  background:rgba(56,225,198,.06);border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  color:var(--text-2);
}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:22px}
.article-body ul li{position:relative;padding-left:6px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:-16px;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--neon);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:.5em}
.article-body img{margin:24px 0;border:1px solid var(--line);border-radius:var(--radius-img)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-btn);overflow:hidden;
}
.article-body table th,.article-body table td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body table thead th{background:var(--bg-2);color:var(--text-1);font-weight:600}
.article-body table tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:16px;overflow-x:auto;font-size:14px;margin:24px 0;
}
.article-body code{font-variant-numeric:tabular-nums}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0}
.table-wrap table{margin:0;min-width:520px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;
  padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  background:var(--bg-1);color:var(--text-2);
}
.empty-state i{font-size:34px;color:var(--text-3)}

/* 侧边目录 */
.toc{
  align-self:start;position:sticky;top:calc(var(--header-h) + 24px);
  border-left:1px solid var(--line);padding-left:18px;
}
.toc h4{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin-bottom:12px;font-weight:600}
.toc a{display:block;font-size:13.5px;color:var(--text-2);padding:6px 0;line-height:1.5}
.toc a:hover{color:var(--neon)}
.toc a.is-sub{padding-left:14px;color:var(--text-3);font-size:13px}
.toc a.is-active{color:var(--neon)}

/* 文末工具条 */
.article-foot{max-width:760px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.foot-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.action-bar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-1);
}
.action-bar .tip{color:var(--text-2);font-size:14px;margin-right:auto}
.copy-msg{font-size:13px;color:var(--ok);min-height:20px;width:100%}

/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);box-shadow:var(--shadow-hover)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;border-radius:0}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 200ms var(--ease)}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px}
.rel-card h3{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.rel-card .meta .time{color:var(--amber)}

/* CTA 通栏 */
.cta-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(56,225,198,.08),rgba(255,106,61,.05) 60%,rgba(7,9,15,0));
  padding:36px 0;
}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-band h3{font-size:20px;font-weight:700}
.cta-band p{color:var(--text-2);font-size:14px;margin-top:8px}
.cta-band .btns{display:flex;gap:12px;flex-wrap:wrap}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--bg-1);overflow:hidden}
.faq-item.is-open{border-left:2px solid var(--neon);background:var(--bg-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:16px;font-weight:600;text-align:left;color:var(--text-1);
}
.faq-q:hover{color:var(--neon)}
.faq-q i{transition:transform 200ms var(--ease);color:var(--neon);font-size:14px}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq-a .inner{padding:0 20px 20px;color:var(--text-2);font-size:15px;max-width:68ch}

/* 页脚 */
.site-footer{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  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,rgba(56,225,198,.6),rgba(56,225,198,0));
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:32px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:14px;max-width:34ch}
.footer-col h4{font-size:14px;color:var(--text-1);margin-bottom:16px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--neon)}
.subscribe-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:12px}
.subscribe-form .field{display:flex;gap:10px}
.subscribe-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--radius-btn);
  background:var(--bg-3);border:1px solid var(--line-strong);color:var(--text-1);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-3)}
.subscribe-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(56,225,198,.25)}
.subscribe-form input.is-error{border-color:var(--err)}
.form-msg{font-size:13px;margin-top:10px;min-height:20px;color:var(--text-3)}
.form-msg.is-ok{color:var(--ok)}
.form-msg.is-err{color:var(--err)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--neon)}
.to-top{
  margin-left:auto;display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line-strong);color:var(--text-2);font-size:13px;
}
.to-top:hover{color:var(--neon);border-color:rgba(56,225,198,.45)}

/* 社交计数 */
.metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:32px;position:relative}
.metric .num{font-size:24px;font-weight:800;color:var(--neon);font-variant-numeric:tabular-nums;line-height:1.2}
.metric .lab{font-size:13px;color:var(--text-2)}

@media (max-width:1279px){
  .toc{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-body{max-width:none}
  .article-foot{max-width:none}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .section{padding:72px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .article-hero{padding:36px 0 28px}
  .article-title{margin:12px 0 16px}
  .share-mini{margin-left:0}
  .cta-band .inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:15px}
  .article-body{font-size:15.5px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .cta-band .btns{width:100%}
  .share-mini .icon-btn{width:44px}
  .action-bar .tip{width:100%;margin-right:0}
}

/* roulang page: category1 */
:root{
  --bg-0:#07090F;--bg-1:#0D111A;--bg-2:#141A26;--bg-3:#1C2331;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.16);
  --neon:#38E1C6;--neon-soft:rgba(56,225,198,.14);--neon-glow:rgba(56,225,198,.35);
  --ember:#FF6A3D;--amber:#FFC24B;
  --text-1:#EAF0F6;--text-2:#A7B2C0;--text-3:#6C7787;
  --ok:#4ADE80;--warn:#FFB020;--err:#FF5C5C;
  --r-card:14px;--r-img:12px;--r-btn:10px;--r-pill:999px;
  --sh-card:0 10px 30px rgba(0,0,0,.45);
  --sh-hover:0 14px 40px rgba(56,225,198,.18);
  --t:200ms cubic-bezier(.4,0,.2,1);
  --font:"Inter",system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg-0);color:var(--text-1);font-family:var(--font);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-variant-numeric:tabular-nums}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color var(--t)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
time{font-variant-numeric:tabular-nums}
::selection{background:rgba(56,225,198,.25);color:#EAF0F6}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,225,198,.25);border-color:var(--neon)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(7,9,15,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:linear-gradient(90deg,var(--neon),rgba(56,225,198,0) 62%)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;letter-spacing:.01em}
.logo-mark{width:16px;height:16px;flex:none;border-radius:5px;background:linear-gradient(135deg,var(--neon),#1E9C8A);box-shadow:0 0 14px var(--neon-glow);transform:rotate(45deg)}
.logo-text{white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text-2);padding:6px 2px;transition:color var(--t)}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--neon);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.nav-link:hover{color:var(--text-1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(56,225,198,.45)}
.nav-link.is-active::after{transform:scaleX(1);box-shadow:0 0 8px var(--neon-glow)}
.nav-cta{margin-left:4px}
.nav-toggle{display:none;width:44px;height:44px;margin-left:auto;border-radius:10px;border:1px solid var(--line-strong);color:var(--text-1);font-size:17px}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t)}
.btn-primary{background:var(--neon);color:#06120F;box-shadow:0 6px 18px rgba(56,225,198,.22)}
.btn-primary:hover{background:#58EFD8;box-shadow:0 8px 24px rgba(56,225,198,.35);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{border-color:rgba(56,225,198,.6);color:var(--neon);background:transparent}
.btn-ghost:hover{background:var(--neon-soft);border-color:var(--neon)}
.btn-ghost:active{transform:scale(.98)}
.btn-quiet{color:var(--text-2);border-color:var(--line-strong)}
.btn-quiet:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(4,6,10,.66);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:var(--bg-1);border-left:1px solid var(--line);z-index:80;transform:translateX(100%);transition:transform 240ms cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;padding:20px}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line-strong);color:var(--text-2);font-size:17px}
.drawer-close:hover{color:var(--neon);border-color:var(--neon)}
.drawer-nav{display:flex;flex-direction:column;margin:16px 0 24px}
.drawer-nav a{height:48px;display:flex;align-items:center;padding-left:14px;color:var(--text-2);border-left:3px solid transparent;font-size:16px}
.drawer-nav a:hover{color:var(--text-1)}
.drawer-nav a.is-active{color:var(--neon);border-left-color:var(--neon);text-shadow:0 0 12px rgba(56,225,198,.45)}
.drawer .btn{width:100%}

/* ---------- page banner ---------- */
.page-banner{position:relative;min-height:308px;display:flex;align-items:center;background:url('/assets/images/backpic/back-2.webp') center 28%/cover no-repeat;border-bottom:1px solid var(--line);overflow:hidden}
.page-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(94deg,rgba(7,9,15,.96) 0%,rgba(7,9,15,.78) 48%,rgba(7,9,15,.88) 100%)}
.page-banner::after{content:"";position:absolute;inset:0;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:44px 44px;opacity:.5;pointer-events:none}
.banner-inner{position:relative;z-index:2;padding:56px 0;max-width:720px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--neon)}
.crumb .sep{color:var(--text-3);opacity:.7}
.crumb .current{color:var(--text-1)}
.page-banner h1{font-size:clamp(28px,4.2vw,42px);font-weight:800;line-height:1.25;letter-spacing:.01em}
.page-banner h1 em{font-style:normal;color:var(--neon)}
.banner-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:620px}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

/* ---------- tag / badge ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--neon-soft);color:var(--neon);font-size:12px;font-weight:500;letter-spacing:.06em}
.tag-ember{background:rgba(255,106,61,.14);color:var(--ember)}
.tag-amber{background:rgba(255,194,75,.14);color:var(--amber)}
.count-badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:8px;border:1px solid var(--line-strong);color:var(--text-2);font-size:12px}
.num-badge{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:26px;padding:0 8px;border-radius:8px;border:1px solid rgba(255,106,61,.55);color:var(--ember);font-size:12px;font-weight:700;letter-spacing:.04em;background:rgba(7,9,15,.72);backdrop-filter:blur(4px)}
.time-stamp{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--amber)}

/* ---------- sections ---------- */
.section{padding:72px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:.01em}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--neon);font-size:14px;font-weight:600}
.text-link:hover{color:#6DF3DE}
.text-link i{transition:transform var(--t)}
.text-link:hover i{transform:translateX(4px)}

/* ---------- stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:28px 0 0}
.stat{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-card);transition:border-color var(--t),transform var(--t)}
.stat:hover{border-color:rgba(56,225,198,.45);transform:translateY(-3px)}
.stat b{display:block;font-size:26px;font-weight:800;color:var(--neon);letter-spacing:.01em;line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-2)}

/* ---------- feature rows ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:36px 0;border-bottom:1px dashed var(--line)}
.feature-row:last-child{border-bottom:0}
.feature-row.reverse .feature-media{order:2}
.feature-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card);position:relative;aspect-ratio:16/10;background:var(--bg-2)}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.4,0,.2,1)}
.feature-row:hover .feature-media img{transform:scale(1.03)}
.feature-body h3{font-size:19px;font-weight:600;margin:14px 0 12px}
.feature-body>p{color:var(--text-2);font-size:15.5px}
.feature-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.feature-list li{display:flex;gap:12px;align-items:flex-start;color:var(--text-2);font-size:15px}
.feature-list li::before{content:"";width:7px;height:7px;margin-top:10px;flex:none;border-radius:2px;background:var(--neon);box-shadow:0 0 8px var(--neon-glow)}
.feature-body .text-link{margin-top:20px}

/* ---------- cover card grid ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cover-card{position:relative;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.cover-card:hover{transform:translateY(-3px);border-color:rgba(56,225,198,.45);box-shadow:var(--sh-hover)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-3)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.4,0,.2,1)}
.cover-card:hover .card-media img{transform:scale(1.04)}
.card-media .num-badge{position:absolute;top:12px;left:12px}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.45}
.card-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line)}
.card-foot .go{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}
.card-foot .go i{transition:transform var(--t)}
.cover-card:hover .card-foot .go{color:var(--neon)}
.cover-card:hover .card-foot .go i{transform:translateX(4px)}

/* ---------- rank list ---------- */
.rank-list{display:flex;flex-direction:column;gap:12px}
.rank-item{display:grid;grid-template-columns:56px 1fr auto auto;align-items:center;gap:18px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);padding:16px 22px;transition:border-color var(--t),transform var(--t),background var(--t)}
.rank-item:hover{border-color:rgba(56,225,198,.45);transform:translateY(-2px);background:var(--bg-3)}
.rank-num{font-size:20px;font-weight:800;color:var(--ember);letter-spacing:.04em}
.rank-main a{font-size:16px;font-weight:600;color:var(--text-1)}
.rank-main a:hover{color:var(--neon)}
.rank-main p{color:var(--text-3);font-size:13.5px;margin-top:2px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.rank-item .time-stamp{white-space:nowrap}

/* ---------- notice bar ---------- */
.notice{display:flex;align-items:center;gap:14px;padding:14px 20px;border-radius:var(--r-card);background:var(--bg-2);border:1px solid var(--line);border-left:3px solid var(--neon);color:var(--text-2);font-size:14.5px;margin-bottom:28px}
.notice i{color:var(--neon)}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column}
.faq-item{border:1px solid var(--line);border-radius:12px;background:var(--bg-2);margin-bottom:12px;overflow:hidden;transition:border-color var(--t),background var(--t),border-left-width var(--t)}
.faq-item.is-open{border-color:var(--line-strong);border-left:2px solid var(--neon);background:var(--bg-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:18px 22px;font-size:16px;font-weight:600;text-align:left;color:var(--text-1)}
.faq-q:hover{color:var(--neon)}
.faq-icon{flex:none;width:26px;height:26px;border-radius:8px;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--text-2);font-size:12px;transition:transform var(--t),color var(--t),border-color var(--t)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--neon);border-color:rgba(56,225,198,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms cubic-bezier(.4,0,.2,1)}
.faq-a p{padding:0 22px 20px;color:var(--text-2);font-size:15px;max-width:68ch}

/* ---------- cta ---------- */
.cta-bar{background:linear-gradient(90deg,rgba(56,225,198,.10),rgba(255,106,61,.08) 70%,rgba(13,17,26,.2));border:1px solid var(--line);border-radius:var(--r-card);padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:32px;min-height:150px;flex-wrap:wrap}
.cta-bar h3{font-size:20px;font-weight:700}
.cta-bar p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line);margin-top:72px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(56,225,198,.55),rgba(56,225,198,0) 55%)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:32px;padding:64px 0 40px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text-1)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li a{color:var(--text-2);font-size:14.5px}
.footer-col li a:hover{color:var(--neon)}
.subscribe-form label{display:block;font-size:13px;color:var(--text-2);margin-bottom:10px}
.subscribe-form .field{display:flex;gap:10px}
.subscribe-form input{flex:1;min-width:0;height:38px;padding:0 14px;border-radius:var(--r-btn);background:var(--bg-3);border:1px solid var(--line-strong);color:var(--text-1);font-size:14px;transition:border-color var(--t),box-shadow var(--t)}
.subscribe-form input::placeholder{color:var(--text-3)}
.subscribe-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(56,225,198,.25)}
.subscribe-form input.is-error{border-color:var(--err)}
.subscribe-form .btn{flex:none}
.form-msg{font-size:13px;margin-top:10px;min-height:20px;color:var(--text-3)}
.form-msg.is-ok{color:var(--ok)}
.form-msg.is-err{color:var(--err)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0 28px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);flex-wrap:wrap}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--neon)}
.to-top{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--r-btn);border:1px solid var(--line-strong);color:var(--text-2);font-size:13px;transition:all var(--t)}
.to-top:hover{color:var(--neon);border-color:var(--neon);background:var(--neon-soft)}
.to-top:active{transform:scale(.98)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none}
  .nav-toggle{display:grid;place-items:center}
  .nav-inner{height:56px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:28px 0}
  .feature-row.reverse .feature-media{order:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:48px 0}
  .page-banner{min-height:268px}
  .banner-inner{padding:44px 0}
  .card-grid{grid-template-columns:1fr}
  .rank-item{grid-template-columns:44px 1fr;row-gap:8px}
  .rank-item .count-badge,.rank-item .time-stamp{grid-column:2}
  .cta-bar{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  body{font-size:15px}
  .page-banner h1{font-size:26px}
  .stats{grid-template-columns:1fr}
  .btn{width:100%}
  .subscribe-form .field{flex-direction:column}
  .subscribe-form input,.subscribe-form .btn{width:100%}
  .nav-toggle,.drawer-close{width:44px}
}

/* roulang page: category2 */
:root{
  --bg-0:#07090F;
  --bg-1:#0D111A;
  --bg-2:#141A26;
  --bg-3:#1C2331;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --neon:#38E1C6;
  --neon-soft:rgba(56,225,198,.14);
  --neon-glow:rgba(56,225,198,.35);
  --ember:#FF6A3D;
  --amber:#FFC24B;
  --text-1:#EAF0F6;
  --text-2:#A7B2C0;
  --text-3:#6C7787;
  --ok:#4ADE80;
  --warn:#FFB020;
  --err:#FF5C5C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
.num,.time,.stat-num{font-variant-numeric:tabular-nums;}
::selection{background:rgba(56,225,198,.28);color:#fff;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(56,225,198,.25);border-color:var(--neon);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(7,9,15,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(56,225,198,.15) 40%,rgba(56,225,198,0));
  opacity:.7;
  pointer-events:none;
}
.header-inner{height:68px;display:flex;align-items:center;gap:28px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:.02em;color:var(--text-1);}
.logo-mark{
  width:18px;height:18px;border-radius:6px;
  background:linear-gradient(140deg,var(--neon),#0d8a76);
  box-shadow:0 0 14px var(--neon-glow);
  position:relative;flex:0 0 auto;
}
.logo-mark::after{
  content:"";position:absolute;inset:5px;border-radius:3px;
  background:rgba(7,9,15,.85);
}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--neon);box-shadow:0 0 10px var(--neon-glow);
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease),height .2s var(--ease);
}
.nav-link:hover{color:var(--text-1);}
.nav-link:hover::after{transform:scaleX(1);height:1px;}
.nav-link.is-active{color:var(--neon);text-shadow:0 0 12px rgba(56,225,198,.45);}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);border:1px solid var(--line-strong);background:var(--bg-2);
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--neon);border-color:rgba(56,225,198,.45);}
.icon-btn:active{transform:scale(.96);}
.nav-toggle{display:none;}

/* ---------- 抽屉 ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:20px;z-index:200;
  transform:translateX(105%);
  transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:24px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  position:relative;height:48px;display:flex;align-items:center;
  padding-left:14px;color:var(--text-2);font-size:16px;
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.drawer-nav a:hover{color:var(--text-1);background:var(--bg-2);}
.drawer-nav a.is-active{color:var(--neon);}
.drawer-nav a.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--neon);border-radius:2px;box-shadow:0 0 10px var(--neon-glow);
}
.drawer-cta{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,6,10,.7);
  opacity:0;visibility:hidden;z-index:190;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  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),filter .2s var(--ease);
}
.btn i{font-size:14px;}
.btn-primary{background:var(--neon);color:#06120F;}
.btn-primary:hover{filter:brightness(1.07);box-shadow:0 8px 24px rgba(56,225,198,.35);transform:translateY(-1px);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{background:transparent;border-color:var(--neon);color:var(--neon);}
.btn-outline:hover{background:rgba(56,225,198,.12);box-shadow:0 8px 24px rgba(56,225,198,.2);}
.btn-outline:active{transform:scale(.98);}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-2);}
.btn-ghost:hover{color:var(--text-1);background:var(--bg-2);}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{height:38px;font-size:14px;padding:0 16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:500;letter-spacing:.06em;
  padding:3px 10px;border-radius:999px;
  background:var(--neon-soft);color:var(--neon);
  border:1px solid rgba(56,225,198,.24);
}
.tag-ember{background:rgba(255,106,61,.12);color:var(--ember);border-color:rgba(255,106,61,.32);}
.time{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--amber);}
.time i{font-size:12px;}

/* ---------- 页面头部 ---------- */
.page-hero{
  position:relative;
  padding:64px 0 60px;
  background:url("/assets/images/backpic/back-3.webp") center 76% / cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 130% at 8% -10%,rgba(56,225,198,.18),transparent 58%),
    linear-gradient(90deg,rgba(7,9,15,.97) 0%,rgba(7,9,15,.82) 46%,rgba(7,9,15,.58) 100%);
}
.page-hero::after{
  content:"";position:absolute;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:64px 64px;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{color:var(--text-2);}
.page-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;line-height:1.25;letter-spacing:.01em;
  max-width:760px;
}
.page-hero .hero-desc{
  margin-top:18px;max-width:640px;
  font-size:16px;color:var(--text-2);line-height:1.85;
}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:36px;
  margin-top:32px;padding-top:26px;border-top:1px solid var(--line);
}
.stat-item{display:flex;flex-direction:column;gap:4px;}
.stat-num{font-size:24px;font-weight:800;color:var(--neon);line-height:1.2;}
.stat-label{font-size:13px;color:var(--text-3);letter-spacing:.04em;}

/* ---------- 索引流 ---------- */
.flow-section{padding:72px 0;background:var(--bg-0);}
.flow-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:48px;}
.flow-rail{
  position:sticky;top:104px;align-self:start;
  display:flex;flex-direction:column;gap:18px;
}
.rail-label{
  writing-mode:vertical-rl;
  font-size:20px;font-weight:800;letter-spacing:.28em;
  color:var(--neon);
  text-shadow:0 0 14px rgba(56,225,198,.35);
}
.rail-line{
  width:2px;height:110px;margin-left:9px;
  background:linear-gradient(180deg,var(--neon),rgba(56,225,198,0));
  border-radius:2px;
}
.rail-meta{
  writing-mode:vertical-rl;
  font-size:12px;letter-spacing:.18em;color:var(--text-3);
}
.section-head{margin-bottom:28px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.flow-list{display:flex;flex-direction:column;gap:14px;}
.flow-row{
  position:relative;
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:20px;
  padding:22px 24px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-left:2px solid rgba(56,225,198,.5);
  border-radius:12px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.flow-row:hover{
  transform:translateX(4px);
  border-color:rgba(56,225,198,.45);
  border-left-color:var(--neon);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(56,225,198,.08);
}
.flow-no{
  width:44px;height:34px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--ember);
  border:1px solid rgba(255,106,61,.45);
  background:rgba(255,106,61,.06);
  font-variant-numeric:tabular-nums;
}
.flow-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.flow-body h3 a:hover{color:var(--neon);}
.flow-body p{
  margin-top:8px;font-size:15px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.flow-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:14px;
}
.flow-link{
  margin-left:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--text-2);
}
.flow-link i{font-size:12px;transition:transform .2s var(--ease);}
.flow-link:hover{color:var(--neon);}
.flow-link:hover i{transform:translateX(4px);}

/* ---------- 通栏图文 ---------- */
.feature-band{
  padding:72px 0;
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.feature-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;}
.feature-figure{
  position:relative;overflow:hidden;
  border-radius:var(--radius-img);
  border:1px solid var(--line-strong);
  aspect-ratio:16/10;
  box-shadow:var(--shadow-card);
}
.feature-figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.feature-figure:hover img{transform:scale(1.03);}
.feature-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,9,15,0) 45%,rgba(7,9,15,.62) 100%);
}
.feature-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;}
.feature-copy p{margin-top:16px;font-size:16px;color:var(--text-2);}
.feature-points{margin-top:24px;display:flex;flex-direction:column;gap:12px;}
.feature-points li{
  position:relative;padding-left:22px;font-size:15px;color:var(--text-1);
}
.feature-points li::before{
  content:"";position:absolute;left:0;top:11px;
  width:9px;height:9px;border-radius:2px;
  background:var(--neon);box-shadow:0 0 10px var(--neon-glow);
}

/* ---------- FAQ ---------- */
.faq-section{padding:72px 0;background:var(--bg-0);}
.faq-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.faq-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;}
.faq-more{font-size:14px;color:var(--neon);display:inline-flex;align-items:center;gap:6px;}
.faq-more:hover{text-shadow:0 0 12px rgba(56,225,198,.45);}
.faq-item{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item.is-open{border-left:2px solid var(--neon);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-1);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--neon);}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--neon);border:1px solid rgba(56,225,198,.35);
  font-size:12px;transition:transform .2s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{
  padding:0 22px 20px;max-width:68ch;
  font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- CTA 通栏 ---------- */
.cta-strip{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;left:-10%;top:-80%;width:420px;height:320px;
  background:radial-gradient(circle,rgba(56,225,198,.16),transparent 68%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  min-height:160px;padding:36px 0;
}
.cta-text h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;}
.cta-text p{margin-top:10px;font-size:15px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.cta-feedback{
  position:relative;z-index:2;font-size:13px;color:var(--neon);
  padding-bottom:18px;min-height:0;
}
.cta-feedback:empty{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 24px;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(56,225,198,.18) 38%,rgba(56,225,198,0));
  opacity:.8;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:32px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:330px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;color:var(--text-1);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--neon);}
.subscribe-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px;}
.subscribe-form .field{display:flex;gap:8px;}
.subscribe-form input{
  width:100%;height:42px;padding:0 14px;
  background:var(--bg-3);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);
  font-size:14px;color:var(--text-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-3);}
.subscribe-form input:focus{outline:none;border-color:var(--neon);box-shadow:0 0 0 3px rgba(56,225,198,.2);}
.form-msg{margin-top:8px;font-size:13px;color:var(--text-3);}
.form-msg.is-ok{color:var(--ok);}
.form-msg.is-err{color:var(--err);}
.footer-bottom{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--neon);}
.to-top{
  margin-left:auto;height:38px;padding:0 14px;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--bg-2);border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);color:var(--text-2);font-size:13px;
  transition:all .2s var(--ease);
}
.to-top:hover{color:var(--neon);border-color:rgba(56,225,198,.45);}
.to-top:active{transform:scale(.97);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .flow-layout{grid-template-columns:170px minmax(0,1fr);gap:36px;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-sm{display:none;}
  .flow-layout{grid-template-columns:1fr;gap:28px;}
  .flow-rail{position:static;flex-direction:row;align-items:center;gap:14px;writing-mode:horizontal-tb;}
  .rail-label{writing-mode:horizontal-tb;font-size:18px;letter-spacing:.14em;}
  .rail-line{width:56px;height:2px;margin:0;background:linear-gradient(90deg,var(--neon),rgba(56,225,198,0));}
  .rail-meta{writing-mode:horizontal-tb;letter-spacing:.08em;}
  .feature-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:56px;}
  .logo{font-size:16px;}
  .page-hero{padding:44px 0 40px;}
  .hero-stats{gap:24px;margin-top:26px;padding-top:20px;}
  .stat-num{font-size:20px;}
  .flow-section,.feature-band,.faq-section{padding:56px 0;}
  .flow-row{grid-template-columns:40px minmax(0,1fr);gap:14px;padding:18px;}
  .flow-no{width:36px;height:30px;font-size:13px;}
  .flow-body h3{font-size:17px;}
  .cta-inner{min-height:auto;padding:32px 0;flex-direction:column;align-items:flex-start;}
  .site-footer{padding:52px 0 22px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .to-top{margin-left:0;}
  .cta-actions{width:100%;flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .subscribe-form .field{flex-direction:column;}
  .subscribe-form .field .btn{width:100%;}
  .flow-meta{gap:10px;}
  .flow-link{margin-left:0;width:100%;}
}