/* roulang page: index */
:root{
  --bg-0:#090C10;
  --bg-1:#0F151C;
  --panel:#121923;
  --panel-2:#161E2A;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF4E1A;
  --brand-2:#FFB020;
  --accent:#22D3B4;
  --danger:#E5484D;
  --t1:#F5F7FA;
  --t2:#A9B4C2;
  --t3:#6B7785;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(255,78,26,.45),0 10px 26px rgba(255,78,26,.32);
  --sp-section:104px;
  --sp-section-m:60px;
  --container:1240px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 12% -6%,rgba(255,78,26,.14),transparent 60%),
    radial-gradient(760px 460px at 100% 4%,rgba(255,176,32,.10),transparent 62%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,78,26,.85);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(255,78,26,.35);color:#fff;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--sp-section) 0;position:relative;}
.section--tight{padding:76px 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,176,32,.45);
  background:rgba(255,176,32,.08);
  color:var(--brand-2);font-size:13px;font-weight:600;letter-spacing:.04em;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px rgba(255,176,32,.9);}
h1{font-size:clamp(30px,4.4vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.12;}
h2{font-size:clamp(24px,3.1vw,34px);font-weight:800;letter-spacing:-.015em;line-height:1.2;}
h3{font-size:clamp(18px,2vw,21px);font-weight:700;line-height:1.35;}
.section-title{margin-top:16px;}
.section-desc{margin-top:14px;color:var(--t2);font-size:16px;max-width:660px;}
.muted{color:var(--t3);}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-glow);}
.btn-primary:hover{transform:translateY(-3px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(255,176,32,.55),0 14px 32px rgba(255,78,26,.4);}
.btn-primary:active{transform:translateY(-1px) scale(.985);}
.btn-ghost{border-color:var(--line-strong);color:var(--t1);background:rgba(255,255,255,.03);}
.btn-ghost:hover{background:rgba(255,78,26,.14);border-color:rgba(255,78,26,.6);transform:translateY(-3px);}
.btn-ghost:active{transform:translateY(-1px) scale(.985);}
.btn-gold{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#161009;box-shadow:0 10px 26px rgba(255,176,32,.28);}
.btn-gold:hover{transform:translateY(-3px);filter:brightness(1.06);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-pill{border-radius:var(--r-pill);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-block{width:100%;}
.text-link{color:var(--brand);font-weight:700;border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;}
.text-link:hover{color:var(--brand-2);border-bottom-color:var(--brand-2);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(9,12,16,.72);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(9,12,16,.94);box-shadow:0 10px 28px rgba(0,0,0,.45);border-bottom-color:rgba(255,255,255,.13);}
.nav-wrap{display:flex;align-items:center;gap:26px;min-height:72px;padding-top:10px;padding-bottom:10px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(255,78,26,.28),rgba(255,176,32,.16));
  border:1px solid rgba(255,176,32,.42);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.01em;}
.brand-text span{font-size:11px;color:var(--brand-2);letter-spacing:.22em;font-weight:600;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--t2);
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--t1);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-ghost{
  font-size:14px;font-weight:600;color:var(--t2);padding:8px 12px;border-radius:10px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-ghost:hover{color:var(--brand-2);background:rgba(255,176,32,.09);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.drawer{
  position:fixed;inset:72px 0 0 auto;width:min(360px,88vw);z-index:79;
  background:#0B1017;border-left:1px solid var(--line);
  padding:26px 22px 32px;transform:translateX(102%);
  transition:transform .3s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.drawer nav a{padding:14px 14px;border-radius:12px;font-weight:600;color:var(--t2);border:1px solid transparent;transition:.2s;}
.drawer nav a:hover,.drawer nav a.is-active{color:var(--t1);background:rgba(255,78,26,.12);border-color:rgba(255,78,26,.35);}
.drawer-foot{display:flex;flex-direction:column;gap:12px;padding-top:18px;border-top:1px solid var(--line);}
.drawer-foot p{font-size:13px;color:var(--t3);}

/* ---------- Hero ---------- */
.hero{padding:78px 0 70px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero h1{margin-top:20px;}
.hero h1 em{font-style:normal;background:linear-gradient(96deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:18px;font-size:17px;color:var(--t2);max-width:560px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.hero-trust .t-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--t1);letter-spacing:-.02em;}
.hero-trust .t-num i{font-style:normal;color:var(--brand-2);font-size:16px;margin-left:2px;}
.hero-trust .t-label{font-size:13px;color:var(--t3);margin-top:2px;}
.hero-visual{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:var(--shadow-card);aspect-ratio:4/3.4;}
.hero-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease;}
.hero-visual:hover img{transform:scale(1.04);}
.hero-visual::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(150deg,rgba(255,78,26,.42),rgba(9,12,16,.2) 45%,rgba(9,12,16,.86));
}
.hero-visual::after{
  content:"";position:absolute;top:0;bottom:0;left:-30%;width:36%;z-index:2;
  background:linear-gradient(30deg,transparent,rgba(255,176,32,.32),rgba(34,211,180,.14),transparent);
  transform:skewX(-14deg);animation:sheen 9s ease-in-out infinite;
}
@keyframes sheen{0%{left:-34%;}55%{left:104%;}100%{left:104%;}}
.hero-visual .hv-tag{
  position:absolute;z-index:3;left:18px;bottom:18px;right:18px;
  display:flex;flex-wrap:wrap;gap:10px;
}
.hv-tag span{
  padding:8px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:600;
  background:rgba(9,12,16,.62);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(10px);
}
.hero-visual .hv-badge{
  position:absolute;z-index:3;top:18px;right:18px;
  padding:10px 16px;border-radius:14px;font-size:13px;font-weight:700;
  background:rgba(9,12,16,.68);border:1px solid rgba(255,176,32,.5);color:var(--brand-2);backdrop-filter:blur(10px);
}
.hero-flare{
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,78,26,.7),rgba(255,176,32,.7),rgba(34,211,180,.5),transparent);
  animation:flow 8s linear infinite;background-size:200% 100%;
}
@keyframes flow{0%{background-position:0 0;}100%{background-position:200% 0;}}

/* ---------- 数据条 ---------- */
.statbar{
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.statbar .cell{padding:28px 26px;border-right:1px solid var(--line);}
.statbar .cell:last-child{border-right:none;}
.statbar .n{font-family:var(--mono);font-size:30px;font-weight:700;letter-spacing:-.02em;}
.statbar .n span{font-size:15px;color:var(--brand-2);margin-left:2px;}
.statbar .l{font-size:14px;color:var(--t2);margin-top:6px;}
.statbar .s{font-size:12.5px;color:var(--t3);margin-top:4px;}

/* ---------- 主推网格 ---------- */
.pick-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px;}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,176,32,.42);box-shadow:var(--shadow-card);}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#0C1219;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,12,16,.05),rgba(9,12,16,.72));}
.badge{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:6px 13px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;
  background:rgba(255,78,26,.9);color:#fff;
}
.badge--gold{background:linear-gradient(100deg,var(--brand),var(--brand-2));color:#170F06;}
.badge--teal{background:rgba(34,211,180,.9);color:#062019;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:20px;}
.card-points{display:flex;flex-direction:column;gap:7px;color:var(--t2);font-size:14.5px;}
.card-points li{display:flex;gap:9px;align-items:flex-start;}
.card-points li::before{content:"";flex:0 0 auto;width:6px;height:6px;border-radius:50%;margin-top:9px;background:var(--brand-2);}
.card-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.price{font-family:var(--mono);font-size:19px;font-weight:700;color:var(--brand-2);}
.price small{font-size:12px;color:var(--t3);font-weight:500;margin-left:4px;}
.card--feature{grid-row:span 2;}
.card--feature .card-media{aspect-ratio:16/12;flex:1;}
.card--feature .card-body h3{font-size:24px;}
.pick-side{display:flex;flex-direction:column;gap:24px;}
.card--compact{flex-direction:row;}
.card--compact .card-media{width:42%;aspect-ratio:auto;flex:0 0 auto;}
.card--compact .card-body{padding:18px;}
.card--compact .card-body h3{font-size:17px;}
.card--compact .card-points{font-size:13.5px;}
.card--compact .card-foot{padding-top:12px;}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(255,78,26,.45);box-shadow:var(--shadow-card);}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0C1219;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-thumb.no-image{display:grid;place-items:center;background:linear-gradient(140deg,#131B26,#0C1219);color:var(--t3);font-size:13px;letter-spacing:.1em;}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--t3);}
.tag{
  display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:var(--accent);
  background:rgba(34,211,180,.12);border:1px solid rgba(34,211,180,.32);
}
.news-card h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .excerpt{
  font-size:14.5px;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:12px;font-size:13.5px;color:var(--brand);font-weight:700;}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line-strong);border-radius:18px;
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.02);
}
.empty-state .ico{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;display:grid;place-items:center;
  border:1px solid rgba(255,176,32,.4);color:var(--brand-2);font-size:22px;background:rgba(255,176,32,.08);
}
.empty-state p{color:var(--t2);}
.empty-state .empty-actions{margin-top:18px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- 评价轮播 ---------- */
.review-wrap{position:relative;}
.review-track{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 22px;scroll-behavior:smooth;
  scrollbar-width:none;
}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 calc((100% - 44px)/3);scroll-snap-align:start;
  background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);border-radius:18px;padding:24px;
  display:flex;flex-direction:column;gap:14px;
  transition:border-color .24s ease,transform .24s ease;
}
.review-card:hover{border-color:rgba(255,176,32,.44);transform:translateY(-4px);}
.review-user{display:flex;align-items:center;gap:13px;}
.avatar{
  width:48px;height:48px;border-radius:14px;flex:0 0 auto;display:grid;place-items:center;
  font-weight:800;color:#190F05;background:linear-gradient(140deg,var(--brand-2),var(--brand));
}
.avatar--t{background:linear-gradient(140deg,var(--accent),#1B8F7C);color:#04231D;}
.review-user .name{font-weight:700;font-size:15.5px;}
.review-user .role{font-size:12.5px;color:var(--t3);}
.stars{color:var(--brand-2);letter-spacing:3px;font-size:14px;}
.review-card p{color:var(--t2);font-size:14.8px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.review-controls{display:flex;align-items:center;gap:14px;margin-top:6px;}
.rv-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--t1);font-size:16px;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.rv-btn:hover{background:rgba(255,78,26,.16);border-color:rgba(255,78,26,.6);transform:translateY(-2px);}
.rv-btn:active{transform:translateY(0) scale(.96);}
.rv-dots{display:flex;gap:8px;margin-left:6px;}
.rv-dots button{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);transition:.2s;}
.rv-dots button.is-on{width:26px;border-radius:6px;background:linear-gradient(90deg,var(--brand),var(--brand-2));}

/* ---------- 保障条 ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:20px;overflow:hidden;background:rgba(255,255,255,.02);}
.assure-item{padding:34px 26px;border-right:1px solid var(--line);transition:background-color .22s ease;}
.assure-item:last-child{border-right:none;}
.assure-item:hover{background:rgba(255,78,26,.07);}
.assure-item .ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  border:1px solid rgba(255,176,32,.38);color:var(--brand-2);background:rgba(255,176,32,.08);font-size:19px;
}
.assure-item h3{font-size:17px;margin-bottom:8px;}
.assure-item p{font-size:14px;color:var(--t2);}

/* ---------- CTA 区块 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;border:1px solid var(--line-strong);
  background:linear-gradient(140deg,#101822,#0A0E13 60%);
  padding:60px 48px;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.cta-band::before{
  content:"";position:absolute;width:520px;height:520px;right:-140px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,78,26,.42),rgba(255,78,26,0) 68%);pointer-events:none;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,176,32,.8),rgba(34,211,180,.4),transparent);
}
.cta-band h2{position:relative;}
.cta-band .cta-sub{margin-top:14px;color:var(--t2);position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;}
.cta-note{margin-top:16px;font-size:13.5px;color:var(--t3);position:relative;}
.form-card{
  position:relative;background:rgba(255,255,255,.05);backdrop-filter:blur(12px);
  border:1px solid var(--line-strong);border-radius:20px;padding:26px;
}
.form-card h3{font-size:18px;margin-bottom:6px;}
.form-card .hint{font-size:13px;color:var(--t3);margin-bottom:18px;}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;}
.field label{font-size:13.5px;color:var(--t2);font-weight:600;}
.field input,.field select,.field textarea{
  height:48px;padding:0 14px;border-radius:12px;
  background:rgba(9,12,16,.6);border:1px solid var(--line-strong);color:var(--t1);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,78,26,.2);background:rgba(9,12,16,.8);
}
.field.has-error input,.field.has-error select{border-color:var(--danger);}
.field .err{display:none;font-size:12.5px;color:var(--danger);}
.field.has-error .err{display:block;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:border-color .22s ease;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;font-size:17px;font-weight:700;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-2);}
.faq-item .plus{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand-2);font-size:16px;line-height:1;
  transition:transform .25s ease,border-color .25s ease,background-color .25s ease;
}
.faq-item[open]{border-color:rgba(255,176,32,.45);}
.faq-item[open] .plus{transform:rotate(45deg);border-color:rgba(255,176,32,.7);background:rgba(255,176,32,.12);}
.faq-answer{padding:0 4px 24px;color:var(--t2);font-size:15.5px;max-width:880px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#070A0E;border-top:1px solid var(--line);margin-top:20px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:66px 0 44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand span{font-size:16.5px;font-weight:800;}
.footer-col h4{font-size:14px;color:var(--t1);margin-bottom:18px;letter-spacing:.06em;}
.footer-col p{font-size:14px;color:var(--t3);max-width:300px;}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--t2);transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover{color:var(--brand);transform:translateX(3px);}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--t2);}
.footer-contact strong{color:var(--brand-2);font-family:var(--mono);font-size:16px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);transition:color .2s ease;}
.footer-bottom a:hover{color:var(--brand-2);}

/* ---------- 移动底部 CTA ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(9,12,16,.94);backdrop-filter:blur(12px);border-top:1px solid var(--line-strong);
  gap:10px;align-items:center;
}
.mobile-cta .btn{flex:1;height:46px;}
.drawer-mask{position:fixed;inset:72px 0 0 0;background:rgba(0,0,0,.55);z-index:78;opacity:0;visibility:hidden;transition:.3s;}
.drawer-mask.is-open{opacity:1;visibility:visible;}

.skeleton{background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.11),rgba(255,255,255,.05));background-size:200% 100%;animation:sk 1.4s ease-in-out infinite;border-radius:12px;}
@keyframes sk{0%{background-position:200% 0;}100%{background-position:-40% 0;}}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  .main-nav,.nav-ghost{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding:54px 0 46px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual{aspect-ratio:16/11;}
  .statbar{grid-template-columns:repeat(2,1fr);}
  .statbar .cell:nth-child(2){border-right:none;}
  .statbar .cell:nth-child(1),.statbar .cell:nth-child(2){border-bottom:1px solid var(--line);}
  .pick-grid{grid-template-columns:1fr;}
  .card--feature{grid-row:auto;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .review-card{flex:0 0 calc((100% - 22px)/2);}
  .assure-grid{grid-template-columns:repeat(2,1fr);}
  .assure-item:nth-child(2){border-right:none;}
  .assure-item:nth-child(1),.assure-item:nth-child(2){border-bottom:1px solid var(--line);}
  .cta-band{grid-template-columns:1fr;padding:44px 28px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;padding:50px 0 34px;}
  .section{padding:72px 0;}
}
@media (max-width:767px){
  body{font-size:15px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .hero-trust{gap:22px;}
  .hero-trust .t-num{font-size:22px;}
  .news-grid{grid-template-columns:1fr;}
  .review-card{flex:0 0 82%;}
  .assure-grid{grid-template-columns:1fr;}
  .assure-item{border-right:none !important;border-bottom:1px solid var(--line);}
  .assure-item:last-child{border-bottom:none;}
  .card--compact{flex-direction:column;}
  .card--compact .card-media{width:100%;aspect-ratio:16/10;}
  .mobile-cta{display:flex;}
  .site-footer{padding-bottom:76px;}
  .faq-item summary{font-size:15.5px;padding:20px 2px;}
  .cta-band{padding:34px 20px;border-radius:20px;}
  .form-card{padding:20px;}
}
@media (max-width:480px){
  .brand-text strong{font-size:15px;}
  .brand-text span{font-size:10px;letter-spacing:.16em;}
  .hero-cta .btn{width:100%;}
  .news-head{margin-bottom:28px;}
  .footer-top{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: article */
:root{
  --bg-0:#090C10;
  --bg-1:#0F151C;
  --panel:#121923;
  --panel-2:#151D29;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --brand:#FF4E1A;
  --brand-2:#FFB020;
  --accent:#22D3B4;
  --danger:#E5484D;
  --t1:#F5F7FA;
  --t2:#A9B4C2;
  --t3:#6B7785;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(255,78,26,.45),0 10px 26px rgba(255,78,26,.32);
  --sec:clamp(56px,7vw,104px);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::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(--t2);
  background:
    radial-gradient(1100px 620px at 82% -8%,rgba(255,78,26,.14),transparent 62%),
    radial-gradient(900px 520px at 8% 4%,rgba(255,176,32,.08),transparent 60%),
    var(--bg-0);
  -webkit-font-smoothing:antialiased;
  padding-bottom:env(safe-area-inset-bottom);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,#FF6A2B,#FF3B0C);color:#fff;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-3px);filter:brightness(1.08);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(255,78,26,.5),0 4px 12px rgba(255,78,26,.3);}
.btn-ghost{border:1px solid var(--line-strong);color:var(--t1);background:rgba(255,255,255,.02);}
.btn-ghost:hover{border-color:var(--brand-2);color:#fff;background:rgba(255,176,32,.08);transform:translateY(-3px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{color:var(--t2);height:42px;padding:0 14px;border-radius:10px;font-weight:600;}
.btn-text:hover{color:var(--t1);background:rgba(255,255,255,.06);}
.btn-pill{border-radius:999px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 页头导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  backdrop-filter:blur(12px);
  background:rgba(9,12,16,.72);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(9,12,16,.94);box-shadow:0 10px 24px rgba(0,0,0,.4);}
.header-inner{display:flex;align-items:center;gap:20px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:17px;color:var(--t1);letter-spacing:-.01em;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(150deg,rgba(255,78,26,.22),rgba(255,176,32,.14));
  border:1px solid var(--line-strong);
}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--t2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  align-items:center;justify-content:center;color:var(--t1);background:rgba(255,255,255,.03);
}
.nav-toggle:hover{border-color:var(--brand-2);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-drawer-cta{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
.breadcrumb li+li::before{content:"/";color:var(--t3);opacity:.6;}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--brand-2);}
.breadcrumb li[aria-current] span{color:var(--t2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:bottom;}

/* ---------- 文章首屏 ---------- */
.article-hero{padding:26px 0 40px;border-bottom:1px solid var(--line);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;border:1px solid rgba(255,176,32,.45);
  background:rgba(255,176,32,.08);color:var(--brand-2);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.post-title{
  margin-top:18px;font-size:clamp(30px,4.6vw,48px);font-weight:900;line-height:1.14;max-width:22ch;
  color:var(--t1);
}
.post-lead{margin-top:16px;max-width:70ch;color:var(--t2);font-size:16.5px;}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:13.5px;color:var(--t3);}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t3);display:inline-block;}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--t2);font-size:13px;
}

/* ---------- 正文布局 ---------- */
.article-section{padding:var(--sec) 0;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:48px;align-items:start;}
.reading-card{
  background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0) 32%),var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);
  padding:clamp(22px,3.4vw,44px);
}
.article-content{max-width:820px;font-size:16.5px;line-height:1.88;color:var(--t2);overflow-wrap:break-word;}
.article-content>*+*{margin-top:1.2em;}
.article-content p{color:var(--t2);}
.article-content h2{
  position:relative;margin-top:2em;padding-left:16px;font-size:clamp(22px,2.6vw,28px);font-weight:800;color:var(--t1);
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-content h3{margin-top:1.7em;font-size:clamp(18px,2.1vw,21px);font-weight:800;color:var(--t1);}
.article-content h4{margin-top:1.4em;font-size:17px;color:var(--t1);}
.article-content a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-content a:hover{color:var(--brand-2);}
.article-content strong{color:var(--t1);font-weight:700;}
.article-content ul,.article-content ol{padding-left:1.3em;}
.article-content ul li{list-style:disc;}
.article-content ol li{list-style:decimal;}
.article-content li+li{margin-top:.5em;}
.article-content li::marker{color:var(--brand);}
.article-content blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand-2);
  background:rgba(255,176,32,.06);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--t1);
}
.article-content img{border-radius:var(--radius);margin:1.6em 0;width:100%;height:auto;}
.article-content figure{margin:1.8em 0;}
.article-content figcaption{margin-top:10px;font-size:13.5px;color:var(--t3);text-align:center;}
.article-content table{
  display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;
  margin:1.6em 0;font-size:14.5px;border:1px solid var(--line);border-radius:var(--radius-sm);
}
.article-content th,.article-content td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.article-content th{background:rgba(255,255,255,.04);color:var(--t1);font-weight:700;}
.article-content code{
  font-family:var(--mono);font-size:14px;background:rgba(255,255,255,.07);
  padding:2px 7px;border-radius:6px;color:var(--brand-2);
}
.article-content pre{
  overflow-x:auto;background:#0B1017;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;font-family:var(--mono);font-size:14px;line-height:1.7;
}
.article-content pre code{background:none;padding:0;color:var(--t2);}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

/* ---------- 标签 / 推荐 / 返回 ---------- */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--t2);font-size:13px;font-weight:600;
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.tag:hover{border-color:var(--brand-2);color:var(--brand-2);transform:translateY(-2px);}
.related-block{margin-top:56px;}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
.block-head h2{font-size:clamp(20px,2.4vw,26px);}
.block-head p{color:var(--t3);font-size:14px;margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:transform .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(255,176,32,.5);}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0B1017;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,12,16,.05),rgba(9,12,16,.72));}
.rel-body{padding:18px 20px 22px;}
.rel-body h3{font-size:17px;line-height:1.45;}
.rel-body p{margin-top:8px;font-size:14px;color:var(--t3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{margin-top:14px;font-size:13px;color:var(--t3);}
.back-bar{margin-top:44px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:96px;display:grid;gap:22px;}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);}
.side-card h3{font-size:16px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}
.toc-list{margin-top:16px;display:grid;gap:4px;}
.toc-list a{display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--t2);border-left:2px solid transparent;}
.toc-list a:hover{color:var(--t1);background:rgba(255,255,255,.05);border-left-color:var(--brand);}
.toc-empty{font-size:13.5px;color:var(--t3);margin-top:14px;line-height:1.7;}
.side-cta{
  background:
    radial-gradient(240px 160px at 90% 0%,rgba(255,78,26,.28),transparent 70%),
    linear-gradient(160deg,#151D29,#0E141B);
  border:1px solid rgba(255,78,26,.32);
}
.side-cta p{font-size:14px;color:var(--t2);margin-top:12px;}
.side-cta .btn{width:100%;margin-top:16px;}
.stat-row{display:grid;gap:12px;margin-top:16px;}
.stat-row div{display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px dashed var(--line);padding-bottom:10px;}
.stat-row strong{font-family:var(--mono);font-size:20px;color:var(--brand-2);}
.stat-row span{font-size:13px;color:var(--t3);}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:clamp(40px,7vw,76px) 24px;
  background:var(--panel);border:1px dashed var(--line-strong);border-radius:var(--radius-lg);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,78,26,.12);border:1px solid rgba(255,78,26,.3);color:var(--brand-2);font-size:24px;
}
.empty-state h2{font-size:22px;}
.empty-state p{margin-top:10px;color:var(--t3);font-size:14.5px;}
.empty-state .btn{margin-top:22px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--sec);background:#070A0E;border-top:1px solid var(--line);padding:64px 0 26px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:800;font-size:16px;}
.footer-col p{margin-top:14px;font-size:14px;color:var(--t3);line-height:1.8;max-width:36ch;}
.footer-col h4{font-size:15px;color:var(--t1);margin-bottom:16px;}
.footer-links{display:grid;gap:10px;}
.footer-links a{font-size:14px;color:var(--t2);transition:color .18s ease,padding-left .18s ease;}
.footer-links a:hover{color:var(--brand);padding-left:4px;}
.footer-contact{display:grid;gap:10px;font-size:14px;color:var(--t2);}
.footer-contact strong{color:var(--brand-2);font-family:var(--mono);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:12.5px;color:var(--t3);
}
.footer-bottom a{color:var(--t2);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(9,12,16,.94);border-top:1px solid var(--line);backdrop-filter:blur(12px);
  gap:10px;
}
.mobile-bar .btn{flex:1;height:44px;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:34px;}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex;}
  .header-actions{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
    flex-direction:column;align-items:stretch;gap:6px;margin-left:0;
    padding:88px 20px 32px;overflow-y:auto;
    background:linear-gradient(180deg,#0F151C,#090C10);
    border-left:1px solid var(--line-strong);
    transform:translateX(102%);transition:transform .28s ease;
  }
  .main-nav.is-open{transform:translateX(0);}
  .nav-link{height:48px;padding:0 16px;font-size:16px;border:1px solid transparent;}
  .nav-link.is-active{border-color:rgba(255,78,26,.4);background:rgba(255,78,26,.1);}
  .nav-link.is-active::after{display:none;}
  .nav-drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);}
  .nav-drawer-cta .btn{width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .side-col{position:static;order:2;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .mobile-bar{display:flex;}
  body{padding-bottom:76px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .post-title{max-width:none;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .reading-card{padding:22px 18px;border-radius:var(--radius);}
  .article-content{font-size:15.5px;line-height:1.85;}
  .breadcrumb li[aria-current] span{max-width:26ch;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .footer-col p{max-width:none;}
  .block-head{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .post-meta{gap:8px 12px;}
  .back-bar .btn{flex:1;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#090C10;
  --bg-1:#0F151C;
  --panel:#121923;
  --panel-2:#161F2B;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.18);
  --brand:#FF4E1A;
  --brand-2:#FFB020;
  --accent:#22D3B4;
  --danger:#E5484D;
  --t1:#F5F7FA;
  --t2:#A9B4C2;
  --t3:#6B7785;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(255,78,26,.45),0 10px 26px rgba(255,78,26,.32);
  --container:1240px;
  --gutter:24px;
  --sec:104px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,opacity .2s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(255,78,26,.35);color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .25s ease,background-color .2s ease,border-color .2s ease,color .2s ease,opacity .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#FF7A2F);
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(255,176,32,.55),0 14px 30px rgba(255,78,26,.38);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(255,78,26,.4),0 6px 14px rgba(255,78,26,.28);}
.btn-ghost{
  background:rgba(255,255,255,.03);
  color:var(--t1);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:rgba(255,78,26,.12);border-color:var(--brand-2);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  background:transparent;
  color:var(--t2);
  height:44px;
  padding:0 14px;
  font-weight:600;
}
.btn-text:hover{color:var(--brand-2);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(9,12,16,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(9,12,16,.94);
  box-shadow:0 8px 24px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:70px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--t1);
  flex-shrink:0;
}
.brand:hover{color:#fff;}
.brand-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(255,78,26,.22),rgba(255,176,32,.14));
  border:1px solid rgba(255,176,32,.4);
  box-shadow:0 0 18px rgba(255,78,26,.22);
  flex-shrink:0;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:12px;
  flex:1;
}
.nav-link{
  position:relative;
  padding:10px 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:var(--t2);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.055);}
.nav-link.is-active{color:#fff;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:3px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.header-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.btn-nav{
  border-radius:var(--r-pill);
  padding:0 24px;
  font-weight:700;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:rgba(255,255,255,.03);
  color:var(--t1);
  place-items:center;
}
.nav-toggle:hover{border-color:var(--brand-2);color:#fff;}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .25s ease,top .25s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer{
  position:fixed;
  top:0;
  right:0;
  width:min(320px,86vw);
  height:100vh;
  padding:88px 24px 32px;
  background:var(--bg-1);
  border-left:1px solid var(--line);
  box-shadow:-20px 0 50px rgba(0,0,0,.55);
  transform:translateX(104%);
  transition:transform .3s ease;
  z-index:70;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.drawer.is-open{transform:translateX(0);}
.drawer a.drawer-link{
  padding:14px 16px;
  border-radius:12px;
  font-size:16px;
  font-weight:600;
  color:var(--t2);
  border:1px solid transparent;
}
.drawer a.drawer-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.drawer a.drawer-link.is-active{
  color:#fff;
  border-color:rgba(255,176,32,.45);
  background:linear-gradient(135deg,rgba(255,78,26,.16),rgba(255,176,32,.08));
}
.drawer .drawer-cta{margin-top:14px;}
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(4,6,9,.66);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 内页首屏 ============ */
.page-hero{
  position:relative;
  min-height:380px;
  display:flex;
  align-items:flex-end;
  padding:96px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(115deg,rgba(9,12,16,.96) 8%,rgba(9,12,16,.72) 48%,rgba(255,78,26,.16) 100%),
    linear-gradient(180deg,rgba(9,12,16,.72),rgba(9,12,16,.96));
}
.hero-inner{position:relative;z-index:2;width:100%;}
.breadcrumb{font-size:13px;color:var(--t3);margin-bottom:18px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--t3);opacity:.7;}
.breadcrumb a:hover{color:var(--brand-2);}
.breadcrumb [aria-current="page"]{color:var(--t2);}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(255,176,32,.5);
  background:rgba(255,176,32,.09);
  color:var(--brand-2);
  font-size:13px;
  font-weight:600;
  letter-spacing:.02em;
}
.pill::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
}
.page-hero h1{
  margin:18px 0 14px;
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.12;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:900px;
}
.hero-sub{
  max-width:680px;
  color:var(--t2);
  font-size:17px;
  line-height:1.75;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.hero-flow{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),var(--accent),transparent);
  background-size:220% 100%;
  opacity:.75;
  animation:flow 8s linear infinite;
}
@keyframes flow{
  0%{background-position:0% 50%;}
  100%{background-position:200% 50%;}
}

/* ============ 通用板块 ============ */
.section{padding:var(--sec) 0;}
.section-sm{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:52px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand-2);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-title{
  font-size:clamp(24px,3vw,34px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.02em;
}
.section-sub{
  margin-top:14px;
  color:var(--t2);
  font-size:16px;
}
.divider-line{
  height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
  border:0;
  margin:0;
}

/* ============ 图文交替块 ============ */
.split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.split+.split{margin-top:96px;}
.split.reverse .split-media{order:2;}
.split.reverse .split-body{order:1;}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16 / 11;
  background:var(--panel);
}
.split-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.split-media:hover img{transform:scale(1.04);}
.split-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(9,12,16,.05) 30%,rgba(9,12,16,.72));
  pointer-events:none;
}
.media-tag{
  position:absolute;
  left:16px;
  top:16px;
  z-index:2;
  height:28px;
  display:inline-flex;
  align-items:center;
  padding:0 12px;
  border-radius:var(--r-pill);
  background:rgba(9,12,16,.72);
  border:1px solid rgba(255,176,32,.45);
  color:var(--brand-2);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
}
.split-body h3{
  font-size:clamp(20px,2.4vw,26px);
  font-weight:800;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.split-body p{color:var(--t2);font-size:16px;}
.bullet-list{margin-top:22px;display:grid;gap:12px;}
.bullet-list li{
  position:relative;
  padding-left:26px;
  color:var(--t2);
  font-size:15px;
}
.bullet-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:10px;
  height:10px;
  border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 12px rgba(255,78,26,.5);
}
.split-body .btn{margin-top:28px;}

/* ============ 规格对比卡 ============ */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:8px;
}
.spec-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:24px 22px;
  display:flex;
  flex-direction:column;
  gap:16px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.spec-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,176,32,.5);
  box-shadow:0 16px 36px rgba(0,0,0,.42);
}
.spec-card h3{
  font-size:19px;
  font-weight:800;
}
.spec-card .spec-note{
  font-size:14px;
  color:var(--t3);
  line-height:1.7;
  min-height:44px;
}
.spec-rows{display:grid;gap:10px;border-top:1px solid var(--line);padding-top:16px;}
.spec-row{
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
}
.spec-row dt{color:var(--t3);}
.spec-row dd{margin:0;color:var(--t1);font-weight:600;font-family:var(--mono);font-size:13.5px;}
.spec-badge{
  align-self:flex-start;
  height:24px;
  display:inline-flex;
  align-items:center;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:700;
  color:#0A0D11;
  background:linear-gradient(135deg,var(--brand-2),#FFD37A);
}
.spec-card:nth-child(2) .spec-badge{background:linear-gradient(135deg,var(--brand),#FF8A5B);color:#fff;}
.spec-card:nth-child(3) .spec-badge{background:linear-gradient(135deg,var(--accent),#7FEFDC);}
.spec-card:nth-child(4) .spec-badge{background:rgba(255,255,255,.10);color:var(--t1);border:1px solid var(--line-strong);}

/* ============ 预约流程时间线 ============ */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:26px;
  left:6%;
  right:6%;
  height:1px;
  background:linear-gradient(90deg,rgba(255,78,26,.55),rgba(255,176,32,.5),rgba(34,211,180,.4),transparent);
}
.step{
  position:relative;
  padding-top:64px;
}
.step-num{
  position:absolute;
  top:0;
  left:0;
  width:52px;
  height:52px;
  display:grid;
  place-items:center;
  border-radius:16px;
  background:var(--panel-2);
  border:1px solid var(--line-strong);
  color:var(--brand-2);
  font-family:var(--mono);
  font-size:17px;
  font-weight:700;
  box-shadow:0 8px 22px rgba(0,0,0,.4);
}
.step h3{font-size:18px;font-weight:800;margin-bottom:10px;}
.step p{color:var(--t2);font-size:15px;}

/* ============ 数据条 ============ */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  overflow:hidden;
}
.stat{
  padding:30px 26px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0;}
.stat strong{
  display:block;
  font-family:var(--mono);
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  letter-spacing:-.02em;
  background:linear-gradient(135deg,#fff,var(--brand-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat span{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--t2);
}

/* ============ 保障清单 ============ */
.assure-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  margin-top:8px;
  border-top:1px solid var(--line);
}
.assure-item{
  padding:28px 26px 28px 0;
  border-bottom:1px solid var(--line);
  padding-right:32px;
}
.assure-item h3{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  margin-bottom:10px;
}
.assure-item h3 i{
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand-2);
  box-shadow:0 0 12px rgba(255,176,32,.7);
  flex-shrink:0;
}
.assure-item p{color:var(--t2);font-size:15px;}

/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--line);
  max-width:900px;
}
.faq-item{
  border-bottom:1px solid var(--line);
  transition:border-color .25s ease;
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px;
  font-size:17px;
  font-weight:700;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  border-radius:10px;
  border:1px solid var(--line-strong);
  color:var(--brand-2);
  font-size:18px;
  line-height:1;
  transition:transform .25s ease,border-color .25s ease,color .25s ease;
}
.faq-item summary:hover{color:#fff;}
.faq-item summary:hover::after{border-color:var(--brand-2);}
.faq-item[open] summary::after{transform:rotate(45deg);border-color:var(--brand-2);color:var(--brand);}
.faq-item[open]{border-color:rgba(255,176,32,.45);}
.faq-answer{
  padding:0 4px 24px;
  color:var(--t2);
  font-size:15.5px;
  max-width:820px;
}

/* ============ CTA 大区块 ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:24px;
  background:
    radial-gradient(900px 320px at 82% 18%,rgba(255,78,26,.28),transparent 62%),
    radial-gradient(700px 300px at 10% 100%,rgba(255,176,32,.16),transparent 60%),
    var(--bg-1);
  padding:64px 56px;
}
.cta-band::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--brand),var(--brand-2),var(--accent),transparent);
  background-size:220% 100%;
  animation:flow 9s linear infinite;
}
.cta-band h2{
  font-size:clamp(24px,3.2vw,36px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.22;
  max-width:640px;
}
.cta-band p{
  margin-top:16px;
  color:var(--t2);
  max-width:620px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  margin-top:32px;
}
.cta-contact{
  display:flex;
  flex-direction:column;
  gap:2px;
  font-size:14px;
  color:var(--t3);
}
.cta-contact strong{
  font-family:var(--mono);
  font-size:18px;
  color:var(--brand-2);
  letter-spacing:.02em;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 28px;
  margin-top:var(--sec);
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:800;
  margin-bottom:16px;
}
.footer-col p{color:var(--t2);font-size:14.5px;max-width:340px;}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  color:var(--t1);
}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:var(--t2);font-size:14.5px;}
.footer-links a:hover{color:var(--brand);}
.footer-contact{display:grid;gap:10px;color:var(--t2);font-size:14.5px;}
.footer-contact strong{color:var(--t1);font-family:var(--mono);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--t3);
}
.footer-bottom a{color:var(--t3);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:var(--brand-2);}

/* ============ 移动端底部 CTA ============ */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:55;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(9,12,16,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  gap:10px;
  align-items:center;
}
.mobile-bar .btn{flex:1;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sec:92px;--gutter:22px;}
  .split{gap:44px;}
}
@media (max-width:1023px){
  :root{--sec:76px;}
  .main-nav,.header-actions .btn-text{display:none;}
  .nav-toggle{display:grid;}
  .header-inner{justify-content:space-between;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-media{order:1;}
  .split.reverse .split-body{order:2;}
  .split+.split{margin-top:68px;}
  .spec-grid{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 20px;}
  .timeline::before{display:none;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat{border-bottom:1px solid var(--line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:0;}
  .assure-list{grid-template-columns:1fr 1fr;}
  .cta-band{padding:48px 32px;}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sec:60px;--gutter:18px;}
  body{font-size:15px;padding-bottom:78px;}
  .page-hero{min-height:0;padding:74px 0 40px;}
  .page-hero h1{font-size:clamp(26px,7.4vw,32px);}
  .hero-sub{font-size:15.5px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .section-head{margin-bottom:34px;}
  .split-media{aspect-ratio:16 / 12;}
  .spec-grid{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:nth-child(3),.stat:nth-child(4){border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .assure-list{grid-template-columns:1fr;}
  .assure-item{padding-right:0;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
  .faq-answer{font-size:15px;}
  .cta-band{padding:36px 22px;border-radius:20px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .mobile-bar{display:flex;}
  .footer-top{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:56px 0 24px;margin-top:var(--sec);}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  .brand{font-size:15.5px;}
  .brand-mark{width:30px;height:30px;}
  .btn{height:44px;}
  .cta-contact strong{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --bg-0:#090C10;
  --bg-1:#0F151C;
  --panel:#121923;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF4E1A;
  --brand-2:#FFB020;
  --accent:#22D3B4;
  --danger:#E5484D;
  --t1:#F5F7FA;
  --t2:#A9B4C2;
  --t3:#6B7785;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --r-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(255,78,26,.45),0 10px 26px rgba(255,78,26,.32);
  --space-section:104px;
  --container:1240px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.18;color:var(--t1)}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,78,26,.35);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0;position:relative}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-1)}
.section-head{max-width:760px;margin-bottom:48px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-2);text-transform:uppercase;
  border:1px solid rgba(255,176,32,.4);
  border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:18px;
  background:rgba(255,176,32,.06);
}
.section-title{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.section-desc{color:var(--t2);font-size:16px;margin:0;max-width:680px}

/* ------- Header / Nav ------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(9,12,16,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled{
  background:rgba(9,12,16,.95);
  box-shadow:0 12px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;align-items:center;gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(255,78,26,.22),rgba(255,176,32,.14));
  border:1px solid rgba(255,176,32,.35);
}
.brand-text{font-size:17px;font-weight:900;letter-spacing:-.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--brand-2)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--t2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--t1)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-ghost{
  font-size:15px;font-weight:600;color:var(--t2);
  padding:9px 6px;border-bottom:1px dashed transparent;
}
.nav-ghost:hover{color:var(--brand-2);border-bottom-color:rgba(255,176,32,.6)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(255,255,255,.04);
  margin-left:auto;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:var(--brand)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(9,12,16,.98);
  padding:18px 24px 26px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a{
  display:block;padding:13px 0;font-size:16px;font-weight:600;
  color:var(--t2);border-bottom:1px solid var(--line);
}
.mobile-drawer a.is-active{color:var(--brand-2)}
.mobile-drawer .btn{margin-top:18px;width:100%;justify-content:center}

/* ------- Buttons ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  border:1px solid transparent;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),#FF7A2F);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);color:#fff}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(255,78,26,.5),0 6px 14px rgba(255,78,26,.3)}
.btn-ghost{
  border-color:var(--line-strong);color:var(--t1);background:rgba(255,255,255,.03);
}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2);background:rgba(255,176,32,.07);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-pill{border-radius:var(--r-pill);padding:12px 26px}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ------- Hero ------- */
.hero-cat{
  position:relative;
  min-height:400px;
  display:flex;align-items:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(9,12,16,.95) 0%,rgba(9,12,16,.82) 45%,rgba(9,12,16,.55) 100%),
    radial-gradient(900px 380px at 88% 0%,rgba(255,78,26,.28),transparent 70%);
}
.hero-inner{position:relative;z-index:2;padding:72px 0 64px;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand-2);
  border:1px solid rgba(255,176,32,.45);
  background:rgba(255,176,32,.08);
  border-radius:var(--r-pill);padding:6px 15px;margin-bottom:20px;
}
.hero-title{font-size:clamp(30px,4.4vw,52px);margin-bottom:16px}
.hero-title .hl{
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:clamp(15px,1.4vw,18px);color:var(--t2);max-width:600px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;color:var(--t3);font-size:13.5px}
.hero-meta b{color:var(--t1);font-family:var(--mono);font-size:17px;margin-right:6px}
.glow-line{
  position:absolute;left:0;right:0;bottom:0;height:2px;z-index:3;
  background:linear-gradient(30deg,var(--brand),var(--brand-2) 45%,var(--accent));
  background-size:220% 100%;
  animation:flow 9s linear infinite;
  opacity:.85;
}
@keyframes flow{0%{background-position:0% 0}100%{background-position:200% 0}}
@media (prefers-reduced-motion:reduce){
  .glow-line{animation:none}
  html{scroll-behavior:auto}
}

/* ------- Stats strip ------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  overflow:hidden;
  margin-top:-46px;position:relative;z-index:5;
}
.stat-item{padding:26px 22px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-family:var(--mono);font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--brand-2);display:block;line-height:1.1}
.stat-label{display:block;margin-top:8px;font-size:13.5px;color:var(--t2)}

/* ------- Numbered list ------- */
.num-list{border-top:1px solid var(--line)}
.num-item{
  display:grid;grid-template-columns:86px 1fr auto;gap:24px;align-items:start;
  padding:30px 8px;border-bottom:1px solid var(--line);
  transition:background .25s ease,padding .25s ease;
}
.num-item:hover{background:rgba(255,78,26,.05)}
.num-index{
  font-family:var(--mono);font-size:28px;font-weight:700;
  color:transparent;-webkit-text-stroke:1px rgba(255,176,32,.75);
  line-height:1;
}
.num-body h3{font-size:20px;margin-bottom:10px}
.num-body p{color:var(--t2);font-size:15px;margin:0;max-width:720px}
.num-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  font-size:12.5px;font-weight:600;color:var(--accent);
  background:rgba(34,211,180,.1);
  border:1px solid rgba(34,211,180,.28);
  border-radius:var(--r-pill);padding:3px 12px;
}
.tag--gold{color:var(--brand-2);background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.3)}
.num-side{
  align-self:center;
  font-size:13px;color:var(--t3);white-space:nowrap;
  font-family:var(--mono);
}

/* ------- Timeline ------- */
.timeline{position:relative;padding-left:38px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2) 55%,rgba(34,211,180,.6));
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 36px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-38px;top:4px;width:24px;height:24px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);
  display:grid;place-items:center;
  font-family:var(--mono);font-size:11px;font-weight:700;color:var(--brand-2);
}
.tl-item:hover .tl-dot{border-color:var(--brand-2);box-shadow:0 0 0 5px rgba(255,176,32,.12)}
.tl-content{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 24px;
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease;
}
.tl-content:hover{border-color:rgba(255,176,32,.4);transform:translateY(-2px)}
.tl-content h3{font-size:19px;margin-bottom:8px}
.tl-content p{margin:0;color:var(--t2);font-size:15px}
.tl-time{display:inline-block;margin-top:12px;font-size:12.5px;color:var(--t3);font-family:var(--mono)}

/* ------- Split block ------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split--reverse .split-media{order:2}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s ease}
.split-media:hover img{transform:scale(1.04)}
.split-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(9,12,16,0) 40%,rgba(9,12,16,.7));
  pointer-events:none;
}
.split-media .cap{
  position:absolute;left:22px;bottom:18px;z-index:2;
  font-size:14px;font-weight:700;color:var(--t1);
}
.check-list{margin-top:22px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
  color:var(--t2);font-size:15px;
}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:6px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
}
.check-list strong{color:var(--t1);font-weight:700}

/* ------- Compare / spec grid ------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.spec-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);padding:26px 24px;
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,border-color .25s ease;
}
.spec-card:hover{transform:translateY(-4px);border-color:rgba(255,176,32,.42)}
.spec-card.is-featured{
  background:linear-gradient(180deg,rgba(255,78,26,.14),rgba(18,25,35,.9));
  border-color:rgba(255,78,26,.5);
}
.spec-name{font-size:18px;font-weight:800}
.spec-badge{
  align-self:flex-start;font-size:12px;font-weight:700;
  color:#fff;background:linear-gradient(135deg,var(--brand),#FF7A2F);
  border-radius:var(--r-pill);padding:3px 12px;
}
.spec-list{display:flex;flex-direction:column;gap:10px;font-size:14.5px;color:var(--t2)}
.spec-list li{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:10px}
.spec-list li:last-child{border-bottom:0;padding-bottom:0}
.spec-list b{color:var(--t1);font-family:var(--mono);font-weight:600}

/* ------- FAQ ------- */
.faq{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);transition:border-color .25s ease}
.faq details[open]{border-color:rgba(255,176,32,.55)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 6px;font-size:17px;font-weight:700;color:var(--t1);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:0 0 auto;font-size:24px;line-height:1;
  color:var(--brand-2);transition:transform .25s ease,color .25s ease;
}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--brand)}
.faq summary:hover{color:var(--brand-2)}
.faq .faq-body{padding:0 6px 24px;color:var(--t2);font-size:15.5px;max-width:760px}

/* ------- CTA band ------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--bg-1);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:-20% -10%;
  background:
    radial-gradient(600px 300px at 20% 20%,rgba(255,78,26,.28),transparent 70%),
    radial-gradient(500px 260px at 82% 80%,rgba(255,176,32,.2),transparent 70%);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:80px 0;
}
.cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-inner p{color:var(--t2);margin-bottom:24px;max-width:520px}
.cta-note{font-size:13.5px;color:var(--t3)}

/* ------- Form ------- */
.form-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:30px 28px;box-shadow:var(--shadow-card);
}
.form-card h3{font-size:20px;margin-bottom:6px}
.form-card .form-hint{color:var(--t3);font-size:13.5px;margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--t2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
  border-radius:var(--r-sm);
  padding:12px 14px;color:var(--t1);
  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(--t3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(255,78,26,.2);
  background:rgba(255,255,255,.06);
}
.field.has-error input,.field.has-error textarea{border-color:var(--danger)}
.field .err{display:none;margin-top:7px;font-size:12.5px;color:var(--danger)}
.field.has-error .err{display:block}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ------- Footer ------- */
.site-footer{
  background:#06080B;
  border-top:1px solid var(--line);
  padding:64px 0 26px;
  color:var(--t2);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid var(--line);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:900;color:var(--t1);margin-bottom:14px}
.footer-col p{font-size:14px;color:var(--t3);margin:0;max-width:340px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:800;color:var(--t1);margin-bottom:16px;letter-spacing:.04em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--t2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:11px;font-size:14px;color:var(--t2)}
.footer-contact strong{color:var(--brand-2);font-family:var(--mono);font-size:15px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:12.5px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);border-bottom:1px dashed rgba(255,255,255,.16)}
.footer-bottom a:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}

/* ------- Bottom mobile CTA ------- */
.bottom-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(9,12,16,.96);
  border-top:1px solid var(--line);
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  gap:12px;
}
.bottom-cta .btn{flex:1}

/* ------- Badge ------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;
  padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,176,32,.35);
  color:var(--brand-2);background:rgba(255,176,32,.08);
}
.badge--accent{color:var(--accent);border-color:rgba(34,211,180,.32);background:rgba(34,211,180,.08)}

/* ------- Responsive ------- */
@media (max-width:1279px){
  :root{--space-section:88px}
}
@media (max-width:1023px){
  .main-nav,.header-actions{display:none}
  .nav-toggle{display:grid}
  .split{grid-template-columns:1fr;gap:32px}
  .split--reverse .split-media{order:0}
  .spec-grid{grid-template-columns:1fr;gap:16px}
  .cta-inner{grid-template-columns:1fr;padding:64px 0}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .stats-strip{grid-template-columns:repeat(2,1fr);margin-top:-30px}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .num-item{grid-template-columns:64px 1fr;gap:16px}
  .num-side{grid-column:2;font-family:var(--font);color:var(--t3)}
}
@media (max-width:767px){
  :root{--space-section:64px}
  .container{padding:0 18px}
  .header-inner{height:64px}
  .hero-inner{padding:56px 0 52px}
  .hero-cat{min-height:340px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .stats-strip{grid-template-columns:1fr;margin-top:0}
  .stat-item{border-right:0 !important;border-bottom:1px solid var(--line)}
  .stat-item:last-child{border-bottom:0}
  .num-item{grid-template-columns:1fr;gap:10px;padding:24px 6px}
  .num-index{font-size:22px}
  .timeline{padding-left:32px}
  .tl-dot{left:-32px;width:20px;height:20px;font-size:10px}
  .form-row{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
  .site-footer{padding-top:48px}
  .bottom-cta{display:flex}
  body{padding-bottom:78px}
}
@media (max-width:480px){
  body{font-size:15px}
  .section-title{font-size:22px}
  .faq summary{font-size:15.5px;padding:18px 4px}
  .tl-content{padding:18px 18px}
  .form-card{padding:22px 18px}
}