/* roulang page: index */
:root{
  --bg:#061018;
  --bg-2:#08141f;
  --bg-3:#0b1b28;
  --cyan:#2BD9FF;
  --lime:#B7FF3C;
  --amber:#FFB020;
  --text:#EAF3FF;
  --text-2:#9CB0C7;
  --text-3:#64748B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --ok:#3DF5C8;
  --err:#FF5C7A;
  --r-card:20px;
  --r-btn:12px;
  --r-img:16px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 70px rgba(43,217,255,.12);
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 600px at 12% -6%, rgba(43,217,255,.16), transparent 62%),
    radial-gradient(760px 520px at 92% 4%, rgba(183,255,60,.09), transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--cyan);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:2px;}
h1,h2,h3,h4,h5,h6{margin:0 0 12px;color:var(--text);font-weight:700;line-height:1.25;}
h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.12;letter-spacing:-.5px;}
h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:700;line-height:1.2;}
h3{font-size:1.25rem;font-weight:600;line-height:1.35;}
h4{font-size:1.0625rem;font-weight:600;}
p{margin:0 0 14px;color:var(--text-2);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-weight:700;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.section{padding:104px 0;position:relative;border-top:1px solid var(--line);}
.section--flush{border-top:none;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);font-weight:700;margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";width:26px;height:2px;background:var(--cyan);border-radius:2px;
  box-shadow:0 0 12px rgba(43,217,255,.8);
}
.section-head p{font-size:15px;color:var(--text-2);margin:0;}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  height:72px;
  background:rgba(6,16,24,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,16,24,.94);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.nav-wrap{
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,#2BD9FF,#B7FF3C);
  display:flex;align-items:center;justify-content:center;
  color:#061018;font-weight:800;font-size:15px;letter-spacing:-.5px;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--text);}
.brand-name em{font-style:normal;color:var(--cyan);}
.brand-sub{display:block;font-size:11px;color:var(--text-3);letter-spacing:.18em;line-height:1;margin-top:2px;}

.nav-main{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;font-weight:600;
  color:var(--text-2);
  border-radius:10px;
  text-decoration:none;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);text-decoration:none;}
.nav-link.is-active{color:var(--cyan);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--cyan);border-radius:2px;
  box-shadow:0 0 12px rgba(43,217,255,.9);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:var(--r-btn);
  border:1px solid var(--glass-line);
  background:var(--glass);
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:all .2s ease;
}
.mega-trigger:hover{color:var(--text);border-color:rgba(43,217,255,.45);background:rgba(43,217,255,.1);}
.mega-trigger i{transition:transform .22s ease;font-size:12px;}
.mega-trigger[aria-expanded="true"] i{transform:rotate(180deg);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;min-height:44px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  text-decoration:none;border:1px solid transparent;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease, filter .2s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(120deg,#2BD9FF 0%,#B7FF3C 100%);
  color:#061018;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.btn-primary:hover{color:#061018;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 38px rgba(43,217,255,.55);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.25);
  color:var(--text);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text);transform:translateY(-2px);}
.btn-sm{padding:9px 16px;min-height:40px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.mega-panel{
  position:fixed;top:72px;right:24px;z-index:95;
  width:min(880px,calc(100vw - 48px));
  background:rgba(9,22,32,.96);
  border:1px solid var(--glass-line);
  border-radius:20px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:24px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(6px);}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.mega-col h4{
  font-size:14px;color:var(--text);margin-bottom:12px;
  letter-spacing:.04em;
}
.mega-col h4 span{display:block;font-size:12px;font-weight:400;color:var(--text-3);letter-spacing:0;margin-top:2px;}
.mega-item{
  display:block;padding:10px 12px;border-radius:12px;
  transition:background .18s ease;
  margin-bottom:4px;
}
.mega-item:hover{background:rgba(255,255,255,.06);text-decoration:none;}
.mega-item strong{display:block;font-size:14px;font-weight:600;color:var(--text);}
.mega-item span{display:block;font-size:12.5px;color:var(--text-2);line-height:1.5;margin-top:2px;}
.mega-item:hover strong{color:var(--cyan);}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--glass-line);background:var(--glass);
  color:var(--text);font-size:17px;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:120;
  width:min(340px,86vw);
  background:rgba(7,18,27,.98);
  border-left:1px solid var(--glass-line);
  transform:translateX(100%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:22px 20px 20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:40px;height:40px;border-radius:11px;border:1px solid var(--glass-line);color:var(--text);font-size:16px;}
.drawer-nav a{
  display:block;padding:14px 4px;font-size:16px;font-weight:600;
  color:var(--text-2);border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--cyan);text-decoration:none;}
.drawer-sub{padding:8px 4px 14px;border-bottom:1px solid var(--line);}
.drawer-sub a{display:block;font-size:14px;color:var(--text-2);padding:7px 0;}
.drawer-foot{margin-top:auto;padding-top:20px;}
.backdrop{
  position:fixed;inset:0;z-index:110;background:rgba(3,8,13,.6);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.backdrop.is-open{opacity:1;visibility:visible;}

/* Hero */
main{padding-top:72px;}
.hero{
  position:relative;
  min-height:78vh;
  display:flex;align-items:center;
  padding:72px 0 64px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(6,16,24,.96) 0%,rgba(6,16,24,.82) 42%,rgba(6,16,24,.42) 78%,rgba(6,16,24,.7) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 380px at 78% 30%, rgba(43,217,255,.2), transparent 70%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;width:100%;}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;border-radius:999px;
  background:rgba(43,217,255,.12);
  border:1px solid rgba(43,217,255,.35);
  font-size:13px;font-weight:600;color:var(--cyan);
  margin-bottom:20px;
}
.hero-badge i{font-size:11px;}
.hero h1{margin-bottom:18px;max-width:14em;}
.hero h1 .accent{
  background:linear-gradient(120deg,#2BD9FF,#B7FF3C);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{font-size:16px;line-height:1.8;color:var(--text-2);max-width:44em;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

.hero-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  padding:26px;
  position:relative;
  overflow:hidden;
}
.hero-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);
}
.hero-card h3{font-size:15px;color:var(--text-2);font-weight:600;letter-spacing:.06em;margin-bottom:18px;}
.hero-facts{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.hero-fact span{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:4px;}
.hero-fact strong{display:block;font-size:17px;color:var(--text);font-weight:700;font-variant-numeric:tabular-nums;}
.hero-fact strong.lime{color:var(--lime);}
.hero-card .divider{height:1px;background:var(--line);margin:20px 0;}
.hero-card-note{font-size:13px;color:var(--text-3);margin:0;}

/* 数据条 */
.metrics{border-bottom:1px solid var(--line);background:rgba(255,255,255,.015);}
.metrics-wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.metric{
  padding:34px 24px;
  border-right:1px solid var(--line);
  text-align:center;
}
.metric:last-child{border-right:none;}
.metric strong{
  display:block;font-size:clamp(1.6rem,3vw,2.3rem);
  color:var(--cyan);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.1;
  text-shadow:0 0 24px rgba(43,217,255,.28);
}
.metric span{display:block;font-size:13.5px;color:var(--text-2);margin-top:8px;}

/* 议程时间线 */
.timeline-grid{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:start;}
.day-tabs{position:sticky;top:104px;display:flex;flex-direction:column;gap:12px;}
.day-tab{
  display:block;padding:16px 18px;border-radius:16px;
  border:1px solid var(--glass-line);background:var(--glass);
  transition:all .2s ease;
}
.day-tab:hover{border-color:rgba(43,217,255,.4);transform:translateY(-2px);text-decoration:none;}
.day-tab.is-active{border-color:rgba(43,217,255,.55);background:rgba(43,217,255,.1);box-shadow:0 0 24px rgba(43,217,255,.16);}
.day-tab strong{display:block;font-size:15px;color:var(--text);font-variant-numeric:tabular-nums;}
.day-tab span{display:block;font-size:12.5px;color:var(--text-3);margin-top:3px;}

.timeline{position:relative;padding-left:30px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;
  background:var(--line);
}
.tl-item{position:relative;padding:0 0 26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:9px;
  width:15px;height:15px;border-radius:50%;
  background:var(--bg);
  border:2px solid rgba(255,255,255,.3);
}
.tl-item.is-now::before{
  border-color:var(--cyan);
  box-shadow:0 0 0 5px rgba(43,217,255,.14),0 0 20px rgba(43,217,255,.8);
}
.tl-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:22px 24px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover);}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:8px;}
.tl-time{font-size:14px;font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.tl-card h3{font-size:1.0625rem;margin:0;}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--text-3);margin-top:6px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:rgba(43,217,255,.12);color:var(--cyan);
  border:1px solid rgba(43,217,255,.22);
}
.tag--lime{background:rgba(183,255,60,.14);color:var(--lime);border-color:rgba(183,255,60,.3);}
.tag--amber{background:rgba(255,176,32,.14);color:var(--amber);border-color:rgba(255,176,32,.3);}

/* 嘉宾 */
.people-scroll{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.person{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  overflow:hidden;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.person:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover);}
.person-media{position:relative;aspect-ratio:4/5;overflow:hidden;}
.person-media img{width:100%;height:100%;object-fit:cover;}
.person-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(6,16,24,.92) 100%);
}
.person-body{position:relative;margin-top:-58px;padding:18px 20px 22px;z-index:2;}
.person-body strong{display:block;font-size:16px;color:var(--text);font-weight:700;}
.person-body em{display:block;font-style:normal;font-size:13px;color:var(--text-2);margin-top:3px;}
.person-body .tag{margin-top:12px;}

/* 票种 */
.tickets{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.ticket{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:28px 26px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  position:relative;
}
.ticket:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover);}
.ticket--featured{
  border-color:rgba(183,255,60,.55);
  box-shadow:0 0 0 1px rgba(183,255,60,.2),0 24px 60px rgba(183,255,60,.1);
  background:linear-gradient(180deg,rgba(183,255,60,.07),rgba(255,255,255,.05));
}
.ticket-badge{
  position:absolute;top:-13px;right:22px;
  padding:5px 14px;border-radius:999px;
  background:var(--lime);color:#061018;
  font-size:12.5px;font-weight:800;letter-spacing:.04em;
}
.ticket h3{font-size:1.25rem;margin-bottom:6px;}
.ticket .ticket-desc{font-size:13.5px;color:var(--text-3);margin-bottom:18px;}
.ticket-price{display:flex;align-items:baseline;gap:6px;margin-bottom:20px;}
.ticket-price strong{font-size:2.2rem;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1;}
.ticket--featured .ticket-price strong{color:var(--lime);}
.ticket-price span{font-size:14px;color:var(--text-3);}
.ticket-list{flex:1;margin-bottom:24px;}
.ticket-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--text-2);
  padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.07);
}
.ticket-list li:last-child{border-bottom:none;}
.ticket-list i{color:var(--cyan);font-size:12px;margin-top:6px;flex:none;}
.ticket-list li.off{color:var(--text-3);}
.ticket-list li.off i{color:var(--text-3);}

/* 报名表单 */
.signup{background:linear-gradient(180deg,rgba(43,217,255,.05),transparent 60%);}
.signup-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:start;}
.signup-points li{
  display:flex;gap:12px;padding:12px 0;font-size:15px;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.signup-points li:last-child{border-bottom:none;}
.signup-points i{color:var(--lime);margin-top:5px;font-size:13px;flex:none;}
.signup-note{
  margin-top:24px;padding:18px 20px;border-radius:16px;
  background:rgba(255,176,32,.08);
  border:1px solid rgba(255,176,32,.28);
  font-size:13.5px;color:#FFD79A;
}
.form-card{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:30px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:96px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);
  box-shadow:0 0 0 3px rgba(43,217,255,.18);
  background:rgba(255,255,255,.07);
}
.field select option{background:#0b1b28;color:var(--text);}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--text-2);margin:6px 0 20px;}
.check-line input{width:18px;height:18px;margin-top:3px;accent-color:#2BD9FF;}
.form-msg{font-size:14px;margin-top:14px;display:none;}
.form-msg.ok{display:block;color:var(--ok);}
.form-msg.err{display:block;color:var(--err);}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:24px;
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover);}
.news-card h3{font-size:1.0625rem;margin-bottom:10px;line-height:1.5;}
.news-card h3 a{color:var(--text);}
.news-card h3 a:hover{color:var(--cyan);text-decoration:none;}
.news-card p{
  font-size:14px;color:var(--text-2);margin-bottom:18px;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  font-size:12.5px;color:var(--text-3);
  border-top:1px solid var(--line);padding-top:14px;
}
.news-thumb{
  width:100%;aspect-ratio:16/9;border-radius:var(--r-img);
  object-fit:cover;margin-bottom:16px;
  border:1px solid var(--glass-line);
}
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:56px 24px;
  border-radius:var(--r-card);
  border:1px dashed var(--glass-line);
  background:rgba(255,255,255,.03);
}
.empty-state i{font-size:30px;color:var(--cyan);margin-bottom:14px;display:block;}
.empty-state strong{display:block;font-size:17px;margin-bottom:8px;color:var(--text);}
.empty-state p{font-size:14px;margin-bottom:18px;}
.empty-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:16px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open{border-color:rgba(43,217,255,.4);background:rgba(43,217,255,.05);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);
  position:relative;
}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--cyan);border-radius:0 3px 3px 0;
  box-shadow:0 0 14px rgba(43,217,255,.8);
}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--glass-line);
  font-size:12px;color:var(--cyan);
  transition:transform .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .22s ease;
}
.faq-a p{padding:0 22px 20px;margin:0;font-size:14.5px;color:var(--text-2);}

/* CTA 条 */
.cta-band{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(600px 300px at 20% 20%, rgba(43,217,255,.16), transparent 70%),
    radial-gradient(600px 300px at 85% 80%, rgba(183,255,60,.1), transparent 70%);
}
.cta-inner{
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  padding:56px 0;
}
.cta-inner h2{margin-bottom:8px;}
.cta-inner p{margin:0;font-size:15px;}

/* 页脚 */
.site-footer{
  background:#040c13;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:48px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 0;max-width:30em;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.05em;}
.footer-col a,.footer-col li{
  display:block;font-size:14px;color:var(--text-2);padding:6px 0;
}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);padding:6px 0;}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:12px;flex:none;}
.footer-sub{display:flex;gap:10px;margin-top:14px;}
.footer-sub input{
  flex:1;min-width:0;
  padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);color:var(--text);font-size:14px;
}
.footer-sub input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,217,255,.18);}
.footer-bottom{
  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);
}
.footer-bottom a{font-size:13px;color:var(--text-3);}
.footer-bottom a:hover{color:var(--cyan);}

/* 响应式 */
@media (max-width:1024px){
  .nav-main{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .mega-trigger{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero{min-height:auto;padding:56px 0 56px;}
  .metrics-wrap{grid-template-columns:repeat(2,1fr);}
  .metric:nth-child(2){border-right:none;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
  .timeline-grid{grid-template-columns:1fr;gap:26px;}
  .day-tabs{position:static;flex-direction:row;overflow-x:auto;padding-bottom:4px;}
  .day-tab{min-width:200px;flex:none;}
  .people-scroll{grid-template-columns:repeat(2,1fr);}
  .tickets{grid-template-columns:1fr;}
  .ticket--featured{order:-1;}
  .signup-grid{grid-template-columns:1fr;gap:32px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .section{padding:72px 0;}
  .container{padding-left:16px;padding-right:16px;}
  .hero-facts{grid-template-columns:1fr 1fr;}
  .form-row{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .cta-inner{padding:44px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .metrics-wrap{grid-template-columns:1fr;}
  .metric{border-right:none;border-bottom:1px solid var(--line);padding:24px 16px;}
  .metric:last-child{border-bottom:none;}
  .people-scroll{grid-template-columns:1fr;}
  .hero-facts{grid-template-columns:1fr;}
  .footer-sub{flex-direction:column;}
  .footer-sub .btn{width:100%;}
}

/* roulang page: article */
:root{
  --bg:#061018;
  --bg-deep:#040c12;
  --bg-soft:#0a1a26;
  --primary:#2BD9FF;
  --primary-12:rgba(43,217,255,.12);
  --primary-40:rgba(43,217,255,.4);
  --lime:#B7FF3C;
  --amber:#FFB020;
  --text:#EAF3FF;
  --body-text:#C7D6E8;
  --muted:#9CB0C7;
  --weak:#64748B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --r-lg:20px;
  --r-md:12px;
  --r-img:16px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 70px rgba(43,217,255,.12);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --nav-h:72px;
}
*,*::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:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(circle at 18% 8%,rgba(43,217,255,.14),transparent 55%),
    radial-gradient(circle at 86% 26%,rgba(183,255,60,.07),transparent 48%);
  pointer-events:none;
  z-index:0;
}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:2px}
img{max-width:100%;display:block;height:auto}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
::selection{background:rgba(43,217,255,.3);color:#fff}

.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(6,16,24,.72);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,16,24,.94);
  box-shadow:0 12px 40px rgba(0,0,0,.5);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--nav-h);
  position:relative;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,#2BD9FF 0%,#B7FF3C 100%);
  color:#061018;
  font-weight:800;
  font-size:16px;
  letter-spacing:.5px;
  box-shadow:0 0 22px rgba(43,217,255,.35);
}
.brand-name{
  display:block;
  font-size:17px;
  font-weight:800;
  letter-spacing:.3px;
  color:var(--text);
  line-height:1.2;
}
.brand-name em{font-style:normal;color:var(--primary)}
.brand-sub{
  display:block;
  font-size:11px;
  color:var(--weak);
  letter-spacing:.6px;
  line-height:1.4;
}
.nav-main{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--muted);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);text-decoration:none;background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(43,217,255,.8);
}
.nav-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.mega-trigger{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  font-size:14px;
  color:var(--muted);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:color .2s,border-color .2s,background .2s;
}
.mega-trigger:hover{color:var(--primary);border-color:var(--primary-40);background:rgba(43,217,255,.08)}
.mega-trigger i{font-size:11px;transition:transform .2s ease}
.mega-trigger[aria-expanded="true"] i{transform:rotate(180deg)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-size:17px;
}
.nav-toggle:hover{border-color:var(--primary-40);color:var(--primary)}

.mega-panel{
  position:absolute;
  top:calc(100% + 12px);
  right:0;
  width:min(860px,92vw);
  padding:26px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  background:rgba(9,22,33,.94);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-panel::before{
  content:"";
  position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
.mega-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  letter-spacing:.4px;
}
.mega-item{
  display:block;
  padding:10px 12px;
  border-radius:10px;
  transition:background .2s ease;
}
.mega-item:hover{background:rgba(255,255,255,.06);text-decoration:none}
.mega-item strong{display:block;font-size:14px;font-weight:700;color:var(--text);margin-bottom:2px}
.mega-item:hover strong{color:var(--primary)}
.mega-item span{display:block;font-size:12.5px;color:var(--muted);line-height:1.5}
.mega-cta{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  padding:18px;
  border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(43,217,255,.16),rgba(183,255,60,.08));
  border:1px solid rgba(43,217,255,.28);
}
.mega-cta strong{font-size:15px;color:var(--text)}
.mega-cta span{font-size:12.5px;color:var(--muted)}
.mega-cta:hover{text-decoration:none;border-color:var(--primary-40)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:13px 26px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,filter .2s ease;
}
.btn:hover{text-decoration:none}
.btn-primary{
  background:linear-gradient(135deg,#2BD9FF 0%,#B7FF3C 100%);
  color:#061018;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.btn-primary:hover{
  color:#061018;
  transform:translateY(-2px);
  filter:brightness(1.05);
  box-shadow:0 0 38px rgba(43,217,255,.55);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.25);
  color:var(--text);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.08);
  color:var(--text);
  transform:translateY(-2px);
  border-color:var(--primary-40);
}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px}

/* ============ 通用玻璃卡 ============ */
.glass{
  position:relative;
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  -webkit-backdrop-filter:blur(18px);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.glass::before{
  content:"";
  position:absolute;
  top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  color:var(--primary);
  background:rgba(43,217,255,.12);
  border:1px solid rgba(43,217,255,.22);
}
.badge-lime{
  color:#061018;
  background:var(--lime);
  border-color:var(--lime);
}
.badge-amber{
  color:#1a1200;
  background:var(--amber);
  border-color:var(--amber);
}

/* ============ 文章头部 ============ */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 54px) 0 48px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.3;
  transform:scale(1.04);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(6,16,24,.6) 0%,rgba(6,16,24,.92) 62%,rgba(6,16,24,1) 100%);
}
.page-hero .container{position:relative;z-index:3}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--weak);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--weak)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{color:var(--weak)}
.breadcrumb em{
  font-style:normal;
  color:var(--muted);
  max-width:52ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-title{
  font-size:clamp(2rem,4.4vw,3.2rem);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.5px;
  max-width:22ch;
  margin-bottom:20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 16px;
  font-size:13.5px;
  color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--weak);display:inline-block}
.article-lead{
  margin-top:28px;
  max-width:860px;
  padding:22px 26px;
  border-radius:var(--r-lg);
}
.article-lead .lead-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:2px;
  color:var(--lime);
  font-weight:700;
  margin-bottom:8px;
}
.article-lead p{
  font-size:15px;
  line-height:1.85;
  color:var(--body-text);
}

/* ============ 正文 ============ */
.article-body{padding:64px 0 72px;position:relative;z-index:2}
.article-shell{
  max-width:800px;
  margin:0 auto;
}
.article-cover{
  margin:0 0 36px;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{
  font-size:12px;
  color:var(--weak);
  padding:10px 16px;
  background:rgba(255,255,255,.03);
  border-top:1px solid var(--line);
}
.prose{
  padding:36px 38px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.045);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.prose > *:first-child{margin-top:0}
.prose p{
  margin:0 0 1.2em;
  font-size:16px;
  line-height:1.9;
  color:var(--body-text);
}
.prose h2{
  position:relative;
  margin:48px 0 16px;
  padding-left:16px;
  font-size:clamp(1.3rem,2.4vw,1.6rem);
  font-weight:700;
  color:var(--text);
}
.prose h2::before{
  content:"";
  position:absolute;
  left:0;top:.12em;
  width:4px;height:1em;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 16px rgba(43,217,255,.65);
}
.prose h3{
  margin:34px 0 12px;
  font-size:1.16rem;
  font-weight:700;
  color:var(--text);
}
.prose h4{margin:26px 0 10px;font-size:1.02rem;color:var(--text)}
.prose a{color:var(--primary);border-bottom:1px solid rgba(43,217,255,.35)}
.prose a:hover{text-decoration:none;border-bottom-color:var(--primary)}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:0;list-style:none;color:var(--body-text)}
.prose ul li,.prose ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
  font-size:15.5px;
  line-height:1.85;
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:4px;top:.72em;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--primary);
  box-shadow:0 0 10px rgba(43,217,255,.6);
}
.prose ol{counter-reset:prose-count}
.prose ol li{counter-increment:prose-count}
.prose ol li::before{
  content:counter(prose-count);
  position:absolute;
  left:0;top:.25em;
  width:18px;height:18px;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;
  font-weight:700;
  color:#061018;
  background:var(--lime);
  border-radius:6px;
}
.prose blockquote{
  margin:26px 0;
  padding:20px 22px;
  border-left:3px solid var(--lime);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:rgba(255,255,255,.06);
  border-top:1px solid var(--glass-line);
  border-right:1px solid var(--glass-line);
  border-bottom:1px solid var(--glass-line);
  color:var(--text);
  font-size:15.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-img);margin:24px 0;border:1px solid var(--glass-line)}
.prose figure{margin:26px 0}
.prose figcaption{font-size:12.5px;color:var(--weak);text-align:center;margin-top:10px}
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:14.5px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.prose thead th{
  background:rgba(43,217,255,.14);
  color:var(--text);
  font-weight:700;
  text-align:left;
  padding:12px 14px;
  border-bottom:1px solid rgba(43,217,255,.25);
}
.prose tbody td{
  padding:12px 14px;
  color:var(--body-text);
  border-bottom:1px solid var(--line);
}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.035)}
.prose tbody tr:last-child td{border-bottom:none}
.prose code{
  background:rgba(43,217,255,.12);
  color:#9BE8FF;
  padding:2px 7px;
  border-radius:6px;
  font-size:13.5px;
}
.prose hr{border:none;height:1px;background:var(--line);margin:36px 0}
.empty-state{
  text-align:center;
  padding:30px 16px;
}
.empty-state i{font-size:34px;color:var(--primary);margin-bottom:16px;display:block}
.empty-state h3{font-size:1.25rem;margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--muted);margin-bottom:22px}

/* ============ 相关推荐 ============ */
.related{padding:0 0 80px;position:relative;z-index:2}
.section-head{margin-bottom:34px}
.section-kicker{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:2px;
  font-weight:700;
  color:var(--lime);
  margin-bottom:10px;
}
.section-title{
  font-size:clamp(1.5rem,3vw,2.15rem);
  font-weight:700;
  letter-spacing:-.3px;
}
.section-sub{
  margin-top:10px;
  font-size:15px;
  color:var(--muted);
  max-width:62ch;
}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{
  transform:translateY(-4px);
  border-color:var(--primary-40);
  box-shadow:var(--shadow-hover);
  text-decoration:none;
}
.card:hover .card-title{color:var(--primary)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:1.05rem;font-weight:700;color:var(--text);line-height:1.5}
.card-text{font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:var(--weak);
}

/* ============ FAQ ============ */
.faq-section{padding:0 0 80px;position:relative;z-index:2}
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:var(--primary-40);box-shadow:0 0 0 1px rgba(43,217,255,.12)}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 24px;
  font-size:16px;
  font-weight:700;
  color:var(--text);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{
  font-size:13px;
  color:var(--primary);
  transition:transform .22s ease;
  flex-shrink:0;
}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-answer{
  padding:0 24px 20px;
  border-left:3px solid var(--primary);
  margin-left:24px;
  padding-left:18px;
}
.faq-answer p{font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ============ CTA ============ */
.cta-section{padding:0 0 96px;position:relative;z-index:2}
.cta-box{
  position:relative;
  padding:52px 48px;
  border-radius:var(--r-lg);
  background:
    radial-gradient(circle at 12% 20%,rgba(43,217,255,.22),transparent 55%),
    radial-gradient(circle at 88% 80%,rgba(183,255,60,.14),transparent 52%),
    rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  overflow:hidden;
  display:grid;
  grid-template-columns:1.4fr .9fr;
  gap:38px;
  align-items:center;
}
.cta-box h2{
  font-size:clamp(1.5rem,2.8vw,2rem);
  font-weight:700;
  margin-bottom:14px;
}
.cta-box p{font-size:15px;color:var(--muted);max-width:52ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px 20px}
.cta-list li{font-size:13.5px;color:var(--body-text);display:flex;align-items:center;gap:8px}
.cta-list i{color:var(--lime);font-size:12px}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:2;
  background:var(--bg-deep);
  padding:72px 0 28px;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,255,.55),rgba(183,255,60,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:36px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--muted);max-width:40ch}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.5px;
}
.footer-col > a{
  display:block;
  font-size:13.5px;
  color:var(--muted);
  padding:5px 0;
}
.footer-col > a:hover{color:var(--primary);text-decoration:none}
.footer-contact{list-style:none;margin:0 0 18px;padding:0}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
  margin-bottom:10px;
}
.footer-contact i{color:var(--primary);margin-top:5px;font-size:12px}
.footer-sub{display:flex;gap:10px}
.footer-sub input{
  flex:1;
  min-width:0;
  padding:11px 14px;
  font-size:13.5px;
  color:var(--text);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  border-radius:var(--r-md);
  transition:border-color .2s,box-shadow .2s;
}
.footer-sub input::placeholder{color:var(--weak)}
.footer-sub input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(43,217,255,.18);
}
.footer-bottom{
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:12.5px;
  color:var(--weak);
}
.toast{
  position:fixed;
  left:50%;
  bottom:32px;
  transform:translate(-50%,14px);
  padding:12px 22px;
  border-radius:var(--r-md);
  font-size:14px;
  font-weight:600;
  background:rgba(61,245,200,.14);
  border:1px solid rgba(61,245,200,.45);
  color:#3DF5C8;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease,transform .25s ease;
  z-index:200;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-main{
    position:fixed;
    top:var(--nav-h);
    right:0;
    bottom:0;
    width:min(330px,88vw);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:22px 20px calc(22px + env(safe-area-inset-bottom));
    background:rgba(6,16,24,.98);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .26s ease;
    overflow-y:auto;
    z-index:110;
  }
  .nav-main.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:15.5px;border-radius:10px}
  .nav-link.is-active::after{left:12px;right:12px;bottom:6px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .mega-panel{
    position:fixed;
    top:var(--nav-h);
    left:0;
    right:0;
    width:100%;
    max-height:calc(100vh - var(--nav-h));
    overflow-y:auto;
    border-radius:0;
    border-left:none;
    border-right:none;
    grid-template-columns:1fr;
    padding:20px;
  }
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .cta-box{grid-template-columns:1fr;padding:40px 32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .prose{padding:30px 26px}
}
@media (max-width:768px){
  .article-body{padding:48px 0 56px}
  .page-hero{padding:calc(var(--nav-h) + 34px) 0 34px}
  .article-title{max-width:none}
  .prose h2{margin-top:38px}
  .card-grid{grid-template-columns:1fr}
  .related,.faq-section{padding-bottom:64px}
  .cta-section{padding-bottom:72px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .brand-sub{display:none}
  .nav-actions .btn-primary{display:none}
  .article-lead{padding:18px 18px}
  .prose{padding:24px 18px}
  .prose p{font-size:15px}
  .prose h2{padding-left:14px}
  .faq-answer{margin-left:16px;padding-left:14px}
  .cta-box{padding:32px 20px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .footer-sub{flex-direction:column}
  .footer-sub .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --cyber:#2BD9FF;
  --cyber-soft:rgba(43,217,255,.14);
  --lime:#B7FF3C;
  --amber:#FFB020;
  --bg:#061018;
  --bg-deep:#040c13;
  --bg-soft:#0a1824;
  --txt:#EAF3FF;
  --txt-2:#9CB0C7;
  --txt-3:#64748B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --r-card:20px;
  --r-btn:12px;
  --r-img:16px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 70px rgba(43,217,255,.12);
  --max:1280px;
  --ok:#3DF5C8;
  --err:#FF5C7A;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  padding-top:72px;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(43,217,255,.16),transparent 62%),
    radial-gradient(760px 460px at 92% 4%,rgba(183,255,60,.09),transparent 60%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,64px 64px,64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--cyber);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:2px}
button,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:1.25;letter-spacing:.2px}
p{margin:0}
:focus-visible{outline:2px solid var(--cyber);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* ===== 头部导航 ===== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  height:72px;
  z-index:120;
  background:rgba(6,16,24,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(4,12,19,.94);box-shadow:0 18px 40px rgba(0,0,0,.5)}
.site-header .container{height:100%}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--cyber),var(--lime));
  color:#061018;
  font-weight:800;
  font-size:15px;
  letter-spacing:.5px;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.brand-name{display:block;font-size:17px;font-weight:800;color:var(--txt);line-height:1.2}
.brand-name em{font-style:normal;color:var(--cyber);margin-left:2px}
.brand-sub{display:block;font-size:12px;color:var(--txt-3);letter-spacing:.5px;line-height:1.4}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  padding:22px 14px;
  font-size:15px;
  color:var(--txt-2);
  font-weight:500;
}
.nav-link:hover{color:var(--cyber);text-decoration:none}
.nav-link.is-active{color:var(--cyber)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;
  background:var(--cyber);border-radius:2px;box-shadow:0 0 12px var(--cyber);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 16px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  color:var(--txt-2);
  font-size:14px;cursor:pointer;
  transition:.22s ease;
}
.mega-trigger:hover{color:var(--txt);border-color:rgba(43,217,255,.4);background:rgba(43,217,255,.1)}
.mega-trigger i{font-size:11px;transition:transform .22s ease}
.mega-trigger[aria-expanded="true"]{color:var(--cyber);border-color:rgba(43,217,255,.45)}
.mega-trigger[aria-expanded="true"] i{transform:rotate(180deg)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  color:var(--txt);cursor:pointer;
}

/* Mega 面板 */
.mega-panel{
  position:absolute;
  top:calc(72px + 10px);
  right:24px;
  width:900px;
  max-width:calc(100vw - 48px);
  padding:26px;
  border-radius:var(--r-card);
  background:rgba(10,24,36,.94);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  opacity:0;
  visibility:hidden;
  transform:translateY(6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  z-index:130;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:22px}
.mega-col h4{font-size:14px;color:var(--txt);margin-bottom:12px;letter-spacing:.6px}
.mega-item{
  display:block;padding:10px 12px;border-radius:12px;
  transition:background .2s ease,transform .2s ease;
}
.mega-item:hover{background:rgba(255,255,255,.06);text-decoration:none;transform:translateX(2px)}
.mega-item strong{display:block;font-size:14px;color:var(--txt);font-weight:600}
.mega-item span{display:block;font-size:12.5px;color:var(--txt-3);line-height:1.55;margin-top:2px}
.mega-card{
  padding:18px;border-radius:16px;
  background:linear-gradient(150deg,rgba(43,217,255,.16),rgba(183,255,60,.08));
  border:1px solid rgba(43,217,255,.28);
}
.mega-card h5{margin:0 0 8px;font-size:15px;color:var(--txt);font-weight:700}
.mega-card p{font-size:13px;color:var(--txt-2);margin-bottom:14px;line-height:1.6}
.mega-card .link-line{font-size:13px;color:var(--lime);font-weight:600}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:310px;max-width:86vw;
  background:rgba(8,20,30,.98);
  border-left:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  transform:translateX(102%);
  transition:transform .3s ease;
  z-index:150;
  display:flex;flex-direction:column;
  padding:22px 20px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-head .brand-name{font-size:16px}
.drawer-close{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid var(--glass-line);color:var(--txt);cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1}
.drawer-nav a{
  padding:14px 14px;border-radius:12px;font-size:15px;color:var(--txt-2);
  background:rgba(255,255,255,.03);border:1px solid transparent;
}
.drawer-nav a:hover{text-decoration:none;color:var(--cyber);border-color:rgba(43,217,255,.3)}
.drawer-nav a.is-active{color:var(--cyber);border-color:rgba(43,217,255,.35);background:rgba(43,217,255,.08)}
.drawer-foot{margin-top:18px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,8,12,.7);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:.25s ease;z-index:140;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ===== 通用组件 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(100deg,var(--cyber),var(--lime));
  color:#061018;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.btn-primary:hover{filter:brightness(1.05);box-shadow:0 0 34px rgba(43,217,255,.55),0 12px 32px rgba(0,0,0,.4);color:#061018}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(255,255,255,.25);
  color:var(--txt);
}
.btn-ghost:hover{background:rgba(255,255,255,.09);color:var(--txt);border-color:rgba(43,217,255,.4)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--cyber-soft);color:var(--cyber);
  border:1px solid rgba(43,217,255,.22);
}
.badge-lime{background:var(--lime);color:#061018;border-color:transparent}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber);border-color:rgba(255,176,32,.3)}

.glass{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
}
.section{padding:104px 0;position:relative}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1.5px;color:var(--cyber);font-weight:600;
  text-transform:uppercase;margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:26px;height:2px;background:var(--cyber);box-shadow:0 0 10px var(--cyber)}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:14px}
.section-head p{color:var(--txt-2);font-size:16px}
.lead{color:var(--txt-2)}
.muted{color:var(--txt-3);font-size:13.5px}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:92px 0 84px;
  overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,#061018 6%,rgba(6,16,24,.9) 38%,rgba(6,16,24,.55) 72%,rgba(6,16,24,.8) 100%);
}
.hero .container{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--txt-3);margin-bottom:26px}
.crumb a{color:var(--txt-2)}
.crumb i{font-size:10px;color:var(--txt-3)}
.hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center}
.hero h1{
  font-size:clamp(2rem,5vw,3.5rem);
  font-weight:800;
  line-height:1.12;
  margin:14px 0 18px;
}
.hero h1 span{color:var(--cyber);text-shadow:0 0 26px rgba(43,217,255,.4)}
.hero-sub{color:var(--txt-2);font-size:17px;max-width:640px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px}
.hero-card{padding:28px}
.hero-card h3{font-size:16px;color:var(--txt);margin-bottom:18px;letter-spacing:.4px}
.stat-line{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.stat-line:last-of-type{border-bottom:0}
.stat-line span:first-child{color:var(--txt-2);font-size:14px}
.stat-line .num{color:var(--lime);font-size:19px}
.hero-card .note{margin-top:16px;font-size:13px;color:var(--txt-3);line-height:1.7}

/* ===== 介绍区 左文右卡 ===== */
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.intro-text h2{font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:18px}
.intro-text p{color:var(--txt-2);margin-bottom:16px}
.intro-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}
.point{
  padding:18px;border-radius:16px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-line);
}
.point i{color:var(--cyber);font-size:16px;margin-bottom:10px;display:block}
.point strong{display:block;font-size:15px;margin-bottom:6px}
.point span{font-size:13.5px;color:var(--txt-3);line-height:1.6}
.intro-card{overflow:hidden}
.intro-card img{width:100%;height:260px;object-fit:cover}
.intro-card .card-body{padding:24px}
.intro-card h3{font-size:18px;margin-bottom:10px}
.intro-card p{color:var(--txt-2);font-size:14.5px;margin-bottom:16px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--txt-2);padding:7px 0}
.check-list li i{color:var(--lime);font-size:13px;margin-top:6px}

/* ===== 非对称卡片网格 ===== */
.asym-grid{display:grid;grid-template-columns:1.25fr .75fr;grid-template-rows:auto auto;gap:24px}
.card{
  position:relative;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.08);
  overflow:hidden;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:26px;flex:1;display:flex;flex-direction:column}
.card-body h3{font-size:19px;margin-bottom:10px}
.card:hover .card-body h3{color:var(--cyber)}
.card-body p{color:var(--txt-2);font-size:14.5px;margin-bottom:16px}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-feature{grid-row:span 2}
.card-feature .card-media{height:300px}
.card-feature .card-body h3{font-size:23px}
.card-small .card-media{height:130px}
.card-small .card-body{padding:22px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{font-size:12px;padding:3px 10px;border-radius:999px;background:rgba(255,255,255,.07);color:var(--txt-2);border:1px solid var(--line)}
.link-more{font-size:14px;color:var(--cyber);font-weight:600}
.link-more i{font-size:11px;margin-left:4px;transition:transform .2s ease}
.card:hover .link-more i{transform:translateX(4px)}

/* ===== 流程时间线 ===== */
.flow{position:relative;margin-top:8px}
.flow::before{
  content:"";position:absolute;left:23px;top:10px;bottom:10px;width:1px;
  background:rgba(255,255,255,.12);
}
.flow-item{position:relative;display:flex;gap:24px;padding:0 0 30px 0}
.flow-idx{
  position:relative;z-index:2;
  flex:0 0 48px;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;color:var(--cyber);
  background:rgba(43,217,255,.1);
  border:1px solid rgba(43,217,255,.4);
  box-shadow:0 0 0 6px rgba(6,16,24,1),0 0 18px rgba(43,217,255,.28);
  font-variant-numeric:tabular-nums;
}
.flow-item.is-key .flow-idx{background:linear-gradient(135deg,var(--cyber),var(--lime));color:#061018;border-color:transparent}
.flow-body{
  flex:1;padding:20px 24px;border-radius:16px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--glass-line);
  transition:border-color .24s ease,transform .24s ease;
}
.flow-body:hover{border-color:rgba(43,217,255,.4);transform:translateX(4px)}
.flow-body h3{font-size:17px;margin-bottom:8px}
.flow-body p{color:var(--txt-2);font-size:14.5px;margin-bottom:10px}
.flow-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--txt-3)}

/* ===== 资料表格 ===== */
.table-wrap{overflow-x:auto;border-radius:var(--r-card);border:1px solid var(--glass-line);background:rgba(255,255,255,.035)}
table.mat{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
table.mat thead th{
  text-align:left;padding:16px 20px;
  background:rgba(43,217,255,.09);
  color:var(--cyber);font-weight:700;font-size:14px;
  border-bottom:1px solid rgba(43,217,255,.22);
  letter-spacing:.4px;
}
table.mat td{padding:15px 20px;color:var(--txt-2);border-bottom:1px solid var(--line);vertical-align:top}
table.mat tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
table.mat tbody tr:last-child td{border-bottom:0}
table.mat td strong{color:var(--txt);font-weight:600}
table.mat tbody tr:hover{background:rgba(43,217,255,.05)}

/* ===== FAQ ===== */
.faq-wrap{max-width:920px}
.faq-item{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .24s ease,box-shadow .24s ease;
}
.faq-item:hover{border-color:rgba(43,217,255,.32)}
.faq-item[open]{box-shadow:inset 3px 0 0 var(--cyber),var(--shadow)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:16px;font-weight:700;color:var(--txt);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--cyber);font-size:13px;transition:transform .22s ease;flex:0 0 auto}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{padding:0 24px 22px;color:var(--txt-2);font-size:14.5px;line-height:1.8}

/* ===== CTA ===== */
.cta-band{
  position:relative;
  border-radius:26px;
  padding:56px;
  overflow:hidden;
  background:linear-gradient(120deg,rgba(43,217,255,.16),rgba(183,255,60,.08) 62%,rgba(6,16,24,.2));
  border:1px solid rgba(43,217,255,.3);
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,217,255,.28),transparent 66%);
  pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px}
.cta-band p{color:var(--txt-2);font-size:15.5px;margin-bottom:20px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-side{
  padding:24px;border-radius:18px;
  background:rgba(6,16,24,.55);
  border:1px solid var(--glass-line);
}
.cta-side dl{margin:0}
.cta-side dt{font-size:13px;color:var(--txt-3);margin-top:12px}
.cta-side dt:first-child{margin-top:0}
.cta-side dd{margin:4px 0 0;font-size:15px;color:var(--txt);font-weight:600}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  margin-top:0;
  padding:72px 0 28px;
  background:var(--bg-deep);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand p{color:var(--txt-2);font-size:14px;margin-top:18px;line-height:1.8;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--txt)}
.footer-col a{display:block;color:var(--txt-2);font-size:14px;padding:6px 0}
.footer-col a:hover{color:var(--cyber);text-decoration:none}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--txt-2);line-height:1.6}
.footer-contact i{color:var(--cyber);margin-top:5px;font-size:12.5px}
.footer-sub{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.footer-sub input{
  flex:1;min-width:160px;height:42px;padding:0 14px;
  border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  color:var(--txt);font-size:14px;
}
.footer-sub input::placeholder{color:var(--txt-3)}
.footer-sub input:focus{outline:none;border-color:var(--cyber);box-shadow:0 0 0 3px rgba(43,217,255,.18)}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--txt-3);
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
  .mega-panel{width:760px}
  .mega-grid{grid-template-columns:1fr 1fr}
  .mega-col.mega-card-col{grid-column:span 2}
}
@media (max-width:1024px){
  .nav-main{display:none}
  .nav-toggle{display:inline-grid;place-items:center}
  .mega-trigger{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .intro-grid{grid-template-columns:1fr}
  .asym-grid{grid-template-columns:1fr}
  .card-feature{grid-row:auto}
  .cta-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:80px 0}
  .mega-panel{display:none}
}
@media (max-width:768px){
  body{padding-top:64px;font-size:15px;line-height:1.7}
  .site-header{height:64px}
  .nav-wrap{height:64px}
  .brand-sub{display:none}
  .hero{padding:64px 0 60px}
  .hero-card{padding:22px}
  .section{padding:64px 0}
  .section-head{margin-bottom:34px}
  .asym-grid{gap:18px}
  .intro-points{grid-template-columns:1fr}
  .cta-band{padding:34px 24px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-actions .btn,.hero-cta .btn{width:100%}
  .flow-item{gap:16px}
  .flow-idx{flex:0 0 42px;width:42px;height:42px;font-size:13px}
  .flow::before{left:20px}
  .flow-body{padding:18px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-cta{margin-bottom:26px}
  .card-body{padding:20px}
  .card-small .card-media{height:150px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .cta-band h2{font-size:1.45rem}
  .footer-bottom{font-size:12.5px}
}

/* roulang page: category2 */
:root{
  --bg:#061018;
  --bg-soft:#08131d;
  --cyan:#2BD9FF;
  --lime:#B7FF3C;
  --amber:#FFB020;
  --text:#EAF3FF;
  --muted:#9CB0C7;
  --dim:#64748B;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.06);
  --glass-line:rgba(255,255,255,.12);
  --r-card:20px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:16px;
  --shadow:0 24px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 70px rgba(43,217,255,.12);
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(640px 420px at 10% 6%, rgba(43,217,255,.16), transparent 72%),
    radial-gradient(560px 400px at 92% 34%, rgba(183,255,60,.08), transparent 74%),
    radial-gradient(700px 500px at 50% 96%, rgba(43,217,255,.07), transparent 76%);
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .2s ease, background-color .2s ease, border-color .2s ease}
a:hover{color:var(--cyan)}
h1,h2,h3,h4,h5{margin:0;color:var(--text);letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
.section{padding:104px 0;position:relative;z-index:1}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:700;line-height:1.25}
.section-head p{margin-top:14px;color:var(--muted);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--cyan);margin-bottom:14px;font-weight:600;
}
.num{font-variant-numeric:tabular-nums;font-weight:700}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:72px;
  background:rgba(6,16,24,.72);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);transition:background .25s ease, box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(6,16,24,.94);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.nav-wrap{position:relative;display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--lime));color:#061018;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 0 22px rgba(43,217,255,.35);
}
.brand-name{display:block;font-size:17px;font-weight:800;line-height:1.15;color:var(--text)}
.brand-name em{font-style:normal;color:var(--cyan)}
.brand-sub{display:block;font-size:11px;color:var(--dim);letter-spacing:.08em}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--muted);font-weight:500;border-radius:10px;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--cyan)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 12px rgba(43,217,255,.9);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);border-radius:var(--r-btn);
  color:var(--muted);font-size:14px;transition:all .2s ease;
}
.mega-trigger:hover{color:var(--text);border-color:rgba(43,217,255,.45)}
.mega-trigger i{font-size:11px;transition:transform .2s ease}
.mega-trigger[aria-expanded="true"] i{transform:rotate(180deg)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);color:var(--text);font-size:16px;
}

.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:min(880px,calc(100vw - 48px));
  background:rgba(8,19,29,.94);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--glass-line);border-radius:var(--r-card);box-shadow:var(--shadow);
  padding:24px;opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease, transform .18s ease, visibility .18s;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1.1fr 1fr .9fr;gap:22px}
.mega-col h5{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);margin-bottom:12px;font-weight:700}
.mega-item{display:block;padding:10px 12px;border-radius:12px;transition:background .18s ease}
.mega-item:hover{background:rgba(255,255,255,.06)}
.mega-item .mi-title{display:block;font-size:14px;font-weight:700;color:var(--text)}
.mega-item:hover .mi-title{color:var(--cyan)}
.mega-item .mi-desc{display:block;font-size:12.5px;color:var(--muted);line-height:1.6;margin-top:2px}
.mega-item.is-current{background:rgba(43,217,255,.1);border:1px solid rgba(43,217,255,.28)}
.mega-promo{
  padding:18px;border-radius:16px;background:var(--glass);border:1px solid var(--glass-line);
}
.mega-promo p{font-size:13px;color:var(--muted);margin-bottom:12px;line-height:1.65}
.drawer-cta{display:none}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--lime));color:#061018;
  box-shadow:0 0 24px rgba(43,217,255,.35);
}
.btn-primary:hover{color:#061018;transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 0 34px rgba(43,217,255,.55)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.25);color:var(--text)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:var(--text);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:11px}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(43,217,255,.12);color:var(--cyan);
  border:1px solid rgba(43,217,255,.25);
}
.badge-lime{background:var(--lime);color:#061018;border-color:transparent}
.badge-amber{background:rgba(255,176,32,.14);color:var(--amber);border-color:rgba(255,176,32,.32)}

/* ============ hero ============ */
.hero{position:relative;min-height:78vh;display:flex;align-items:flex-end;padding:150px 0 72px;overflow:hidden}
.hero-media{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);z-index:0;
}
.hero-veil{
  position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(115deg, rgba(6,16,24,.96) 8%, rgba(6,16,24,.72) 46%, rgba(6,16,24,.34) 78%),
    linear-gradient(to top, rgba(6,16,24,1) 2%, rgba(6,16,24,0) 46%);
}
.hero-inner{position:relative;z-index:2}
.hero-kicker{
  display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid var(--glass-line);
  font-size:13px;color:var(--muted);margin-bottom:22px;backdrop-filter:blur(12px);
}
.hero-kicker i{color:var(--lime)}
.hero h1{
  font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.12;max-width:16em;
  text-shadow:0 18px 50px rgba(0,0,0,.6);
}
.hero h1 span{
  background:linear-gradient(120deg,var(--cyan),var(--lime));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;max-width:660px;color:var(--muted);font-size:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;
  border:1px solid var(--glass-line);border-radius:var(--r-card);
  background:rgba(255,255,255,.05);backdrop-filter:blur(18px);overflow:hidden;
}
.hero-facts li{padding:20px 22px;border-right:1px solid var(--line)}
.hero-facts li:last-child{border-right:0}
.hero-facts .k{font-size:12.5px;color:var(--dim);letter-spacing:.06em}
.hero-facts .v{display:block;font-size:16px;font-weight:700;color:var(--text);margin-top:6px}
.hero-facts .v.lime{color:var(--lime)}

/* ============ 步骤条 ============ */
.step-strip{padding:30px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.step-track{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.step-item{
  position:relative;padding:16px 18px 16px 20px;border-radius:16px;
  background:var(--glass);border:1px solid var(--glass-line);
}
.step-item::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:linear-gradient(var(--cyan),var(--lime));
}
.step-item .n{font-size:12px;color:var(--dim);letter-spacing:.12em}
.step-item .t{display:block;font-size:15px;font-weight:700;margin-top:4px}
.step-item .d{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;line-height:1.6}

/* ============ 瀑布列表 ============ */
.insight-flow{column-count:2;column-gap:24px}
.insight-card{
  break-inside:avoid;display:block;margin-bottom:24px;padding:24px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);
  box-shadow:0 1px 0 rgba(255,255,255,.08) inset;
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.insight-card:hover{transform:translateY(-4px);border-color:rgba(43,217,255,.4);box-shadow:var(--shadow-hover)}
.insight-card img{width:100%;aspect-ratio:16/10;object-fit:cover;margin-bottom:18px}
.insight-card .meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:var(--dim);margin-bottom:12px}
.insight-card h3{font-size:1.2rem;font-weight:700;line-height:1.4}
.insight-card:hover h3{color:var(--cyan)}
.insight-card p{color:var(--muted);font-size:14.5px;margin-top:10px}
.insight-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.insight-card .more{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:14px;font-weight:700;color:var(--cyan)}
.insight-card .more i{transition:transform .2s ease}
.insight-card:hover .more i{transform:translateX(4px)}

/* ============ 指标条 ============ */
.metric-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(43,217,255,.06),rgba(6,16,24,0));
}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric-cell{padding:38px 26px;border-right:1px solid var(--line)}
.metric-cell:last-child{border-right:0}
.metric-cell .m-num{font-size:clamp(1.8rem,3.4vw,2.5rem);color:var(--cyan);line-height:1.1}
.metric-cell .m-num.lime{color:var(--lime)}
.metric-cell .m-num.amber{color:var(--amber)}
.metric-cell .m-label{display:block;font-size:13.5px;color:var(--muted);margin-top:10px}
.metric-cell .m-note{display:block;font-size:12.5px;color:var(--dim);margin-top:4px}

/* ============ 图文区块 ============ */
.feature-split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.feature-split img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--glass-line)}
.feature-copy h2{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:700;line-height:1.25}
.feature-copy > p{color:var(--muted);margin-top:16px;font-size:15px}
.check-list{margin-top:26px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--text)}
.check-list li i{color:var(--lime);margin-top:5px;font-size:13px}
.check-list li span{color:var(--muted)}

/* ============ 咨询表单 ============ */
.cta-band{position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(700px 420px at 20% 0%, rgba(43,217,255,.16), transparent 70%),
             radial-gradient(600px 400px at 90% 100%, rgba(183,255,60,.1), transparent 72%);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;position:relative;z-index:1}
.form-card{
  padding:30px;border-radius:var(--r-card);background:rgba(255,255,255,.06);
  border:1px solid var(--glass-line);backdrop-filter:blur(18px);box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 14px;border-radius:var(--r-input);
  background:rgba(6,16,24,.6);border:1px solid var(--glass-line);color:var(--text);
  font-size:15px;font-family:inherit;transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#55637a}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,217,255,.18);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);margin:6px 0 18px}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:#2BD9FF}
.form-msg{margin-top:14px;font-size:14px;display:none}
.form-msg.is-ok{display:block;color:#3DF5C8}
.form-msg.is-err{display:block;color:#FF5C7A}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  border-radius:var(--r-card);background:var(--glass);border:1px solid var(--glass-line);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item.is-open{border-color:rgba(43,217,255,.42)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:transparent;border:0;color:var(--text);
  font-size:16px;font-weight:700;text-align:left;cursor:pointer;
}
.faq-q i{color:var(--cyan);font-size:13px;transition:transform .22s ease}
.faq-item.is-open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 24px 22px;color:var(--muted);font-size:14.5px;border-left:3px solid transparent}
.faq-item.is-open .faq-a p{border-left-color:var(--cyan);margin-left:24px;padding-left:18px}

/* ============ 面包屑 ============ */
.crumb{padding:104px 0 0;font-size:13px;color:var(--dim)}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb li::after{content:"/";margin-left:8px;color:#3a4657}
.crumb li:last-child::after{content:""}
.crumb a:hover{color:var(--cyan)}

/* ============ footer ============ */
.site-footer{
  position:relative;z-index:1;background:#040c13;border-top:1px solid var(--line);padding:72px 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(43,217,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand p{color:var(--muted);font-size:14px;margin-top:18px;max-width:34em}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;color:var(--muted);font-size:14px;padding:6px 0}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:14px;padding:5px 0}
.footer-contact i{color:var(--cyan);margin-top:5px;font-size:13px}
.footer-sub{display:flex;gap:10px;margin-top:16px}
.footer-sub input{
  flex:1;min-width:0;padding:11px 13px;border-radius:var(--r-input);
  background:rgba(6,16,24,.7);border:1px solid var(--glass-line);color:var(--text);font-size:14px;font-family:inherit;
}
.footer-sub input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(43,217,255,.16)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--dim);font-size:13px;
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .mega-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .feature-split{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-grid;place-items:center}
  .mega-trigger{display:none}
  .nav-main{
    position:fixed;top:72px;right:0;bottom:0;width:min(330px,88vw);
    flex-direction:column;align-items:stretch;gap:8px;margin:0;padding:22px 20px 120px;
    background:rgba(5,13,20,.98);border-left:1px solid var(--line);
    transform:translateX(104%);transition:transform .28s ease;overflow-y:auto;
  }
  .nav-main.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px;background:rgba(255,255,255,.03)}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:rgba(43,217,255,.12)}
  .drawer-cta{
    display:block;position:fixed;bottom:0;right:0;width:min(330px,88vw);
    padding:16px 20px 22px;background:rgba(5,13,20,.98);border-top:1px solid var(--line);
    transform:translateX(104%);transition:transform .28s ease;
  }
  .drawer-cta.is-open{transform:translateX(0)}
  .step-track{grid-template-columns:1fr 1fr}
  .metric-grid{grid-template-columns:1fr 1fr}
  .metric-cell{border-bottom:1px solid var(--line)}
  .metric-cell:nth-child(2n){border-right:0}
  .hero{min-height:auto;padding:130px 0 64px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:68px 0}
  .insight-flow{column-count:1}
  .hero-facts{grid-template-columns:1fr 1fr}
  .hero-facts li:nth-child(2n){border-right:0}
  .hero-facts li{border-bottom:1px solid var(--line)}
  .hero-sub{font-size:15px}
}
@media (max-width:520px){
  body{font-size:15px;line-height:1.7}
  .brand-sub{display:none}
  .nav-actions .btn-sm{display:none}
  .step-track{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:1fr}
  .metric-cell{border-right:0}
  .hero-actions .btn{width:100%}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-sub{flex-direction:column}
  .footer-sub .btn{width:100%}
}