/* roulang page: index */
:root{
  --primary:#F2571F;
  --primary-dark:#D84512;
  --secondary:#123B3A;
  --accent:#17C3B2;
  --warn:#FFB020;
  --bg:#FAF8F5;
  --bg-alt:#F2EFE9;
  --surface:#FFFFFF;
  --ink-900:#0F1211;
  --ink-700:#2A2F2D;
  --ink-500:#5B6462;
  --ink-300:#98A09D;
  --line:#E4E2DD;
  --line-dark:rgba(255,255,255,.08);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,18,17,.04),0 8px 24px -12px rgba(15,18,17,.10);
  --sh-2:0 18px 40px -18px rgba(15,18,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color 200ms var(--ease)}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(242,87,31,.16)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
.section{padding:88px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:64px 0}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:rgba(242,87,31,.10);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:18px;
}
.eyebrow--dark{color:var(--accent);background:rgba(23,195,178,.14)}
.section-head{margin-bottom:44px}
.section-head h2{
  font-size:clamp(28px,3.2vw,44px);
  font-weight:750;
  line-height:1.15;
  display:flex;align-items:center;gap:14px;
}
.section-head h2::before{
  content:"";width:4px;height:.92em;border-radius:2px;
  background:var(--primary);flex:none;
}
.section-head p{margin-top:14px;max-width:720px;color:var(--ink-500)}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-head--split p{margin-top:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:650;letter-spacing:.01em;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),box-shadow 320ms var(--ease);
  white-space:nowrap;
}
.btn .arw{transition:transform 200ms var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 10px 26px -14px rgba(242,87,31,.9)}
.btn--primary:hover{background:var(--primary-dark)}
.btn--ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn--ghost:hover{background:var(--ink-900);color:#fff}
.btn--light{background:#fff;color:var(--ink-900)}
.btn--light:hover{background:#F2EFE9}
.btn--outline-light{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn--outline-light:hover{background:rgba(255,255,255,.12)}
.btn--block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary);font-size:14px;font-weight:650;
}
.link-arrow::after{content:"→";transition:transform 200ms var(--ease)}
.link-arrow:hover::after{transform:translateX(4px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge--primary{background:rgba(242,87,31,.10);color:var(--primary)}
.badge--neutral{background:var(--bg-alt);color:var(--ink-500)}
.badge--dark{background:rgba(255,255,255,.10);color:#fff}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--nav-h);
  background:rgba(15,18,17,.28);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background 320ms var(--ease),box-shadow 320ms var(--ease),border-color 320ms var(--ease),height 320ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(250,248,245,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  max-width:1240px;margin:0 auto;height:100%;padding:0 40px;
  display:flex;align-items:center;gap:32px;
}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:34px;height:34px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--primary),#FF8A4C);
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);
  gap:2px;padding:7px;
}
.logo-mark i{background:rgba(255,255,255,.92);border-radius:1.5px;display:block}
.logo-mark i:nth-child(2),
.logo-mark i:nth-child(4),
.logo-mark i:nth-child(9){background:rgba(255,255,255,.42)}
.logo-text{font-size:17px;font-weight:750;letter-spacing:-.01em;color:#fff;transition:color 320ms var(--ease)}
.site-header.is-scrolled .logo-text{color:var(--ink-900)}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:rgba(255,255,255,.86);
  padding:6px 0;transition:color 320ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:auto;bottom:-2px;height:2px;width:0;
  background:var(--primary);border-radius:2px;transition:width 320ms var(--ease);
}
.nav-link:hover{color:#fff}
.site-header.is-scrolled .nav-link{color:var(--ink-500)}
.site-header.is-scrolled .nav-link:hover{color:var(--ink-900)}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:16px}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid rgba(255,255,255,.24);
}
.site-header.is-scrolled .nav-toggle{border-color:var(--line)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform 320ms var(--ease),opacity 200ms var(--ease),background 320ms var(--ease)}
.site-header.is-scrolled .nav-toggle span{background:var(--ink-900)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:70;
  background:#fff;box-shadow:-24px 0 48px -24px rgba(15,18,17,.32);
  transform:translateX(102%);transition:transform 320ms var(--ease);
  display:flex;flex-direction:column;padding:88px 24px 24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:16px;right:16px;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);color:var(--ink-700);font-size:20px;line-height:1;
}
.drawer nav{display:flex;flex-direction:column}
.drawer nav a{
  font-size:20px;font-weight:650;color:var(--ink-900);
  padding:18px 0;border-bottom:1px solid var(--line);
}
.drawer nav a:hover{color:var(--primary)}
.drawer .btn{margin-top:auto}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,18,17,.45);z-index:65;
  opacity:0;visibility:hidden;transition:opacity 320ms var(--ease),visibility 320ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:min(88vh,760px);display:flex;align-items:center;
  padding:calc(var(--nav-h) + 64px) 0 72px;
  background:#0F1211 url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(15,18,17,.94) 0%,rgba(15,18,17,.86) 38%,rgba(18,59,58,.78) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-inner{max-width:760px}
.hero-brand{
  display:inline-flex;align-items:center;gap:10px;margin-bottom:22px;
  color:rgba(255,255,255,.88);font-size:13px;font-weight:600;letter-spacing:.12em;
}
.hero-brand b{color:#fff;font-weight:750;letter-spacing:-.01em;font-size:15px}
.hero h1{
  color:#fff;font-size:clamp(40px,5.4vw,72px);line-height:1.06;font-weight:800;letter-spacing:-.03em;
  max-width:15ch;
}
.hero h1 em{font-style:normal;color:#FFB98F}
.hero-sub{
  margin-top:22px;color:rgba(255,255,255,.82);font-size:clamp(16px,1.5vw,19px);
  font-weight:500;max-width:34ch;
}
.hero-actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:0;margin-top:52px;
  border-top:1px solid rgba(255,255,255,.16);padding-top:26px;max-width:640px;
}
.hero-stat{padding-right:36px;margin-right:36px;border-right:1px solid rgba(23,195,178,.5)}
.hero-stat:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stat strong{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:#fff;line-height:1.2;
}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.68);letter-spacing:.04em}

/* ============ 倒计时条 ============ */
.countdown{
  background:var(--secondary);color:#fff;border-top:1px solid rgba(255,255,255,.08);
}
.countdown-inner{
  max-width:1240px;margin:0 auto;padding:0 40px;min-height:64px;
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  padding-top:12px;padding-bottom:12px;
}
.cd-label{font-size:14px;font-weight:600;color:rgba(255,255,255,.88);display:flex;align-items:center;gap:8px}
.cd-label::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--warn);box-shadow:0 0 0 4px rgba(255,176,32,.18)}
.cd-clock{display:flex;align-items:center;gap:8px;margin-left:auto}
.cd-cell{
  background:#0F1211;border:1px solid rgba(255,255,255,.14);border-radius:var(--r-sm);
  min-width:58px;padding:6px 10px;text-align:center;
}
.cd-cell b{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:24px;font-weight:700;line-height:1.15;color:#fff;
}
.cd-cell span{font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.08em}
.cd-sep{color:var(--warn);font-weight:700;font-family:var(--font-num)}
.cd-link{margin-left:auto}
.cd-link a{color:#fff;font-size:14px;font-weight:650;display:inline-flex;align-items:center;gap:8px}
.cd-link a::after{content:"→";transition:transform 200ms var(--ease)}
.cd-link a:hover{color:var(--warn)}
.cd-link a:hover::after{transform:translateX(4px)}

/* ============ 卖点区 ============ */
.spot-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.spot-lead{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 200ms var(--ease);
}
.spot-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.spot-lead-img{aspect-ratio:16/9;overflow:hidden}
.spot-lead-img img{width:100%;height:100%;object-fit:cover;transition:transform 560ms var(--ease)}
.spot-lead:hover .spot-lead-img img{transform:scale(1.04)}
.spot-lead-body{padding:26px 28px 28px}
.spot-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.1em;
}
.spot-lead-body h3{font-size:24px;font-weight:700;margin:12px 0 12px}
.spot-lead-body p{font-size:15px;line-height:1.85}
.spot-lead-body .link-arrow{margin-top:18px}
.spot-side{display:flex;flex-direction:column;gap:24px}
.spot-row{
  flex:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--sh-1);display:flex;gap:20px;align-items:flex-start;
  transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 200ms var(--ease);
}
.spot-row:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.spot-thumb{width:88px;height:88px;border-radius:var(--r-sm);object-fit:cover;flex:none}
.spot-row h3{font-size:19px;font-weight:700;margin:6px 0 10px}
.spot-row p{font-size:14.5px;line-height:1.8}
.spot-row .link-arrow{margin-top:12px;font-size:13px}

/* ============ 图墙 ============ */
.wall{
  display:grid;grid-template-columns:repeat(4,1fr);
  grid-auto-rows:112px;gap:20px;grid-auto-flow:dense;
}
.wall-item{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--secondary);
  box-shadow:var(--sh-1);
}
.wall-item img{width:100%;height:100%;object-fit:cover;transition:transform 560ms var(--ease)}
.wall-item:hover img{transform:scale(1.04)}
.wall-item::after{
  content:"";position:absolute;inset:auto 0 0 0;height:62%;
  background:linear-gradient(to top,rgba(15,18,17,.86),rgba(15,18,17,0));
  transition:opacity 320ms var(--ease);
}
.wall-cap{
  position:absolute;left:0;right:0;bottom:0;padding:18px 20px;z-index:2;
  transform:translateY(8px);transition:transform 320ms var(--ease);
}
.wall-item:hover .wall-cap{transform:translateY(0)}
.wall-cap .badge{margin-bottom:10px;background:rgba(242,87,31,.92);color:#fff}
.wall-cap h3{color:#fff;font-size:17px;font-weight:700;line-height:1.35}
.wall-cap p{color:rgba(255,255,255,.74);font-size:13px;margin-top:4px}
.wall-item--tall{grid-row:span 3}
.wall-item--mid{grid-row:span 2}
.wall-item--wide{grid-column:span 2;grid-row:span 2}

/* ============ 最新信息 ============ */
.news-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:32px;align-items:start}
.news-lead{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 200ms var(--ease);
}
.news-lead:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.news-lead-img{aspect-ratio:16/10;overflow:hidden}
.news-lead-img img{width:100%;height:100%;object-fit:cover}
.news-lead-body{padding:24px 26px 28px}
.news-lead-body h3{font-size:22px;font-weight:700;margin:14px 0 12px;line-height:1.35}
.news-lead-body p{font-size:15px;line-height:1.85;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:16px;font-size:13px;color:var(--ink-300);display:flex;gap:8px;align-items:center;font-family:var(--font-num);font-variant-numeric:tabular-nums}
.news-list{display:flex;flex-direction:column}
.news-row{
  display:flex;gap:16px;padding:16px 12px;border-bottom:1px solid var(--line);
  border-radius:var(--r-sm);align-items:center;
  transition:background 200ms var(--ease);
}
.news-row:first-child{border-top:1px solid var(--line)}
.news-row:hover{background:var(--bg-alt)}
.news-row:hover h3{color:var(--primary)}
.news-row img{width:96px;height:72px;object-fit:cover;border-radius:10px;flex:none}
.news-row-body{min-width:0}
.news-row h3{
  font-size:17px;font-weight:650;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color 200ms var(--ease);
}
.news-row .news-meta{margin-top:6px;font-size:12.5px}
.news-empty{
  min-height:240px;border:1px dashed var(--line);border-radius:var(--r-md);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--surface);color:var(--ink-300);text-align:center;padding:32px;
}
.news-empty svg{width:42px;height:42px;stroke:var(--ink-300)}
.news-empty p{font-size:15px;color:var(--ink-500)}

/* ============ 领取 CTA ============ */
.claim{
  position:relative;color:#fff;overflow:hidden;
  background:#0F1211 url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.claim::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(15,18,17,.96),#16302E 100%);
}
.claim .container{position:relative;z-index:2}
.claim-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.claim h2{color:#fff;font-size:clamp(28px,3.2vw,42px);font-weight:750;line-height:1.15;margin-bottom:18px}
.claim-lead{color:rgba(255,255,255,.76);font-size:16px;line-height:1.9;max-width:44ch}
.claim-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.claim-points li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.88);font-size:15px}
.claim-points svg{width:20px;height:20px;flex:none;margin-top:4px;stroke:var(--accent)}
.form-card{
  background:var(--surface);border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:32px;color:var(--ink-500);
}
.form-card h3{font-size:21px;font-weight:700;margin-bottom:6px}
.form-card .form-hint{font-size:13.5px;color:var(--ink-300);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:#fff;color:var(--ink-900);font-size:15px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field input::placeholder{color:var(--ink-300)}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(23,195,178,.28);
}
.field.has-error input,.field.has-error select{border-color:#E5484D;box-shadow:0 0 0 2px rgba(229,72,77,.14)}
.field-err{display:none;font-size:12px;color:#E5484D;margin-top:6px}
.field.has-error .field-err{display:block}
.code-row{display:flex;gap:10px}
.code-row input{flex:1}
.code-row button{
  height:48px;padding:0 16px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--bg-alt);color:var(--ink-700);font-size:14px;font-weight:600;white-space:nowrap;
  transition:background 200ms var(--ease),border-color 200ms var(--ease);
}
.code-row button:hover{border-color:var(--primary);color:var(--primary)}
.form-note{margin-top:14px;font-size:12px;color:var(--ink-300);line-height:1.7}
.form-success{
  display:none;text-align:center;padding:26px 10px;
}
.form-success svg{width:56px;height:56px;stroke:var(--accent);margin:0 auto 16px}
.form-success h4{font-size:19px;margin-bottom:8px}
.form-success p{font-size:14px;color:var(--ink-500)}
.form-card.is-done form{display:none}
.form-card.is-done .form-success{display:block}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;min-height:64px;display:flex;align-items:center;gap:18px;
  padding:18px 4px;text-align:left;transition:color 200ms var(--ease);
}
.faq-q:hover .faq-title{color:var(--primary)}
.faq-idx{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--primary);flex:none;width:26px;
}
.faq-title{font-size:17px;font-weight:650;color:var(--ink-900);flex:1;line-height:1.5;transition:color 200ms var(--ease)}
.faq-icon{
  width:26px;height:26px;flex:none;position:relative;border-radius:50%;
  border:1px solid rgba(23,195,178,.4);transition:transform 320ms var(--ease),background 200ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--accent);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px;transition:opacity 200ms var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.faq-a-inner{padding:0 4px 26px 44px;max-width:720px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ============ 页脚 ============ */
.site-footer{background:#0F1211;color:rgba(255,255,255,.62);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:0}
.footer-col{padding:0 28px;border-right:1px solid var(--line-dark)}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .logo-text{color:#fff}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.58);margin-bottom:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col li a{font-size:14px;color:rgba(255,255,255,.62)}
.footer-col li a:hover{color:var(--primary)}
.footer-contact{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:14px;color:rgba(255,255,255,.75)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.42);
}
.footer-bottom nav{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom nav a{font-size:13px;color:rgba(255,255,255,.48)}
.footer-bottom nav a:hover{color:var(--primary)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 560ms var(--ease),transform 560ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container,.nav-inner,.countdown-inner{max-width:1160px}
}
@media (max-width:1199px){
  .container,.nav-inner,.countdown-inner{max-width:960px;padding:0 32px}
  .wall{grid-template-columns:repeat(3,1fr)}
  .spot-grid{grid-template-columns:1fr}
  .spot-side{flex-direction:row}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 0}
  .footer-col:nth-child(2){border-right:0}
  .footer-col:nth-child(1),.footer-col:nth-child(2){padding-left:0}
  .footer-col:nth-child(3){padding-left:0;border-right:0}
  .news-layout{grid-template-columns:1fr}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .site-header{height:64px}
  :root{--nav-h:64px}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 48px) 0 56px}
  .hero h1{font-size:clamp(32px,7vw,40px);max-width:100%}
  .hero h1 br{display:none}
  .wall{grid-template-columns:repeat(3,1fr);grid-auto-rows:96px;gap:16px}
  .wall-item--wide{grid-column:span 2;grid-row:span 2}
  .spot-side{flex-direction:column}
  .claim-grid{grid-template-columns:1fr;gap:40px}
  .section{padding:72px 0}
  .hero-stat{padding-right:26px;margin-right:26px}
  .countdown-inner{gap:16px}
  .cd-label{width:100%}
}
@media (max-width:767px){
  .container,.nav-inner,.countdown-inner{padding:0 20px}
  .wall{grid-template-columns:repeat(2,1fr);grid-auto-rows:104px}
  .wall-item--wide{grid-column:span 2;grid-row:span 2}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .news-row img{width:84px;height:64px}
  .form-card{padding:24px 20px}
  .faq-a-inner{padding-left:0}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-col{padding:0;border-right:0;border-bottom:1px solid var(--line-dark);padding-bottom:24px}
  .footer-col:last-child{border-bottom:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .hero-stats{gap:18px 0}
  .hero-stat{width:50%;padding-right:0;margin-right:0;border-right:0}
  .cd-clock{width:100%;margin-left:0;flex-wrap:wrap}
  .cd-cell{min-width:52px;flex:1}
  .cd-link{margin-left:0}
  .spot-row{flex-direction:column;gap:14px}
  .spot-thumb{width:100%;height:150px}
  .news-row{gap:12px;padding:14px 6px}
  .news-row img{width:76px;height:60px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{transform:none}
}

/* roulang page: article */
:root{
  --primary:#F2571F;
  --primary-dark:#D84512;
  --secondary:#123B3A;
  --accent:#17C3B2;
  --warn:#FFB020;
  --bg:#FAF8F5;
  --bg-alt:#F2EFE9;
  --surface:#FFFFFF;
  --ink-900:#0F1211;
  --ink-700:#2A2F2D;
  --ink-500:#5B6462;
  --ink-300:#98A09D;
  --line:#E4E2DD;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,18,17,.04),0 8px 24px -12px rgba(15,18,17,.10);
  --sh-2:0 18px 40px -18px rgba(15,18,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:991px){.container{padding:0 32px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:76px;
  background:rgba(15,18,17,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  color:#fff;
  transition:background 320ms var(--ease),box-shadow 320ms var(--ease),border-color 320ms var(--ease),color 320ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(250,248,245,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
  color:var(--ink-900);
}
.header-inner{height:76px;display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{display:grid;grid-template-columns:repeat(3,5px);gap:2px}
.logo-mark i{width:5px;height:5px;border-radius:1.5px;background:currentColor;opacity:.4;transition:background 320ms var(--ease)}
.logo-mark i:nth-child(5){background:var(--primary);opacity:1}
.logo-text{font-size:18px;font-weight:750;letter-spacing:-.01em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:30px;margin-left:auto}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.86);
  padding:6px 0;
  transition:color 200ms var(--ease);
}
.site-header.is-scrolled .nav-link{color:var(--ink-700)}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--primary);border-radius:2px;transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after,.nav-link.is-active::after{width:16px}
.nav-link.is-active{color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:650;line-height:1;
  transition:background 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  white-space:nowrap;
}
.btn .arw{display:inline-block;transition:transform 200ms var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--primary);color:#fff;box-shadow:0 10px 24px -14px rgba(242,87,31,.7)}
.btn--primary:hover{background:var(--primary-dark)}
.btn--ghost{border:1px solid rgba(255,255,255,.5);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--outline{border:1px solid var(--ink-900);color:var(--ink-900)}
.btn--outline:hover{background:var(--ink-900);color:#fff}
.btn--light{background:#fff;color:var(--ink-900)}
.btn--light:hover{background:var(--primary);color:#fff}
.btn--sm{height:42px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:650;font-size:15px}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}
.link-arrow:hover .arw{transform:translateX(4px)}
.link-arrow .arw{transition:transform 200ms var(--ease)}

/* ---------- Hamburger & Drawer ---------- */
.hamburger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border-radius:var(--r-sm);
}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:currentColor;transition:transform 200ms var(--ease),opacity 200ms var(--ease)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,18,17,.5);opacity:0;visibility:hidden;z-index:130;
  transition:opacity 320ms var(--ease),visibility 320ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);z-index:140;
  background:var(--bg);display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 320ms var(--ease);
  box-shadow:-20px 0 60px -30px rgba(15,18,17,.5);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;font-size:22px;color:var(--ink-500);border-radius:var(--r-sm)}
.drawer-nav{padding:8px 20px;flex:1}
.drawer-nav a{display:block;padding:16px 0;font-size:20px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--primary)}
.drawer-foot{padding:20px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;
  padding:150px 0 60px;
  background-image:linear-gradient(135deg,rgba(15,18,17,.95),rgba(22,48,46,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  color:rgba(255,255,255,.82);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,195,178,.5),transparent);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.72);transition:color 200ms var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(255,255,255,.34)}
.article-title{
  color:#fff;
  font-size:clamp(30px,3.6vw,42px);
  line-height:1.25;
  font-weight:750;
  letter-spacing:-.02em;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:24px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:14px;color:rgba(255,255,255,.7);
}
.article-meta .dot{color:rgba(255,255,255,.3)}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge--primary{background:rgba(242,87,31,.14);color:#FF8A5B}
.badge--soft{background:var(--bg-alt);color:var(--ink-500)}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  padding-top:64px;
  padding-bottom:24px;
}
.toc{display:none}
.toc-title{
  font-size:12px;letter-spacing:.12em;font-weight:700;color:var(--ink-300);
  text-transform:uppercase;margin-bottom:14px;
}
.toc-list a{
  display:block;padding:7px 0 7px 12px;
  font-size:14px;line-height:1.5;color:var(--ink-500);
  border-left:2px solid transparent;
  transition:color 200ms var(--ease),border-color 200ms var(--ease);
}
.toc-list a:hover{color:var(--ink-900)}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);font-weight:600}
@media (min-width:1200px){
  .article-layout{grid-template-columns:240px minmax(0,1fr);gap:56px}
  .toc{display:block;position:sticky;top:96px;align-self:start;max-height:calc(100vh - 140px);overflow:auto}
  .article-layout.no-toc{grid-template-columns:minmax(0,1fr)}
  .article-layout.no-toc .toc{display:none}
}

/* ---------- Prose ---------- */
.article-body{max-width:760px;margin:0 auto;width:100%}
.prose{font-size:16.5px;line-height:1.95;color:var(--ink-500)}
.prose>*:first-child{margin-top:0}
.prose p{margin:0 0 22px}
.prose h2{
  position:relative;
  font-size:26px;line-height:1.35;font-weight:750;color:var(--ink-900);
  margin:48px 0 18px;padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:2px;background:var(--primary);
}
.prose h3{font-size:20px;line-height:1.4;font-weight:700;color:var(--ink-900);margin:34px 0 14px}
.prose h4{font-size:17px;font-weight:650;color:var(--ink-900);margin:26px 0 10px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:22px}
.prose ul li{list-style:disc;margin-bottom:8px}
.prose ol li{list-style:decimal;margin-bottom:8px}
.prose li::marker{color:var(--primary)}
.prose blockquote{
  margin:26px 0;padding:20px 24px;
  background:var(--bg-alt);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--ink-700);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{width:100%;border-radius:var(--r-md);margin:10px 0 12px}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--primary-dark)}
.prose strong{color:var(--ink-900);font-weight:650}
.prose table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-sm);
}
.prose th{background:var(--bg-alt);color:var(--ink-900);font-weight:650;text-align:left}
.prose th,.prose td{padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
.prose pre{
  background:#0F1211;color:#E6E4DF;border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.7;
}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.prose p code,.prose li code{background:var(--bg-alt);border-radius:4px;padding:2px 6px;color:var(--ink-700)}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose figcaption{text-align:center;font-size:13px;color:var(--ink-300);margin:-4px 0 20px}

/* ---------- Empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;min-height:280px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:48px 24px;
}
.empty-state svg{width:48px;height:48px;color:var(--ink-300)}
.empty-msg{font-size:16px;color:var(--ink-500)}

/* ---------- Reading note ---------- */
.reading-note{
  max-width:760px;margin:40px auto 0;
  display:flex;gap:14px;align-items:flex-start;
  background:var(--bg-alt);border-radius:var(--r-md);
  padding:20px 24px;font-size:14px;line-height:1.8;color:var(--ink-500);
}
.reading-note svg{width:20px;height:20px;flex-shrink:0;color:var(--accent);margin-top:3px}

/* ---------- Tag row ---------- */
.tag-row{
  max-width:760px;margin:44px auto 0;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.tag-row .label{font-size:13px;color:var(--ink-300);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:13px;color:var(--ink-500);
  transition:border-color 200ms var(--ease),color 200ms var(--ease),transform 200ms var(--ease);
}
.tag:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}

/* ---------- Related ---------- */
.section{padding:88px 0}
.section--alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.4vw,32px);line-height:1.2;font-weight:750}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--ink-500);max-width:560px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 320ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 560ms var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;line-height:1.45;font-weight:650}
.card-body p{font-size:14.5px;line-height:1.8;color:var(--ink-500)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300)}

/* ---------- Prev / Next ---------- */
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:56px}
.pager-item{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;transition:transform 320ms var(--ease),box-shadow 320ms var(--ease),border-color 320ms var(--ease);
}
.pager-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.pager-item .dir{font-size:13px;color:var(--ink-300);display:flex;align-items:center;gap:8px}
.pager-item h3{font-size:17px;line-height:1.5;font-weight:650}
.pager-item.is-next{text-align:right}
.pager-item.is-next .dir{justify-content:flex-end}
.back-wrap{display:flex;justify-content:center;margin-top:44px}

/* ---------- Footer ---------- */
.site-footer{background:#0F1211;color:rgba(255,255,255,.68);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:0}
.footer-col{padding:0 32px}
.footer-col:first-child{padding-left:0}
.footer-col:last-child{padding-right:0}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.08)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .logo-mark i{background:rgba(255,255,255,.45)}
.footer-brand .logo-mark i:nth-child(5){background:var(--primary)}
.footer-brand .logo-text{font-size:18px;font-weight:750}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6)}
.footer-contact{margin-top:14px;color:rgba(255,255,255,.5)!important}
.footer-col h4{color:#fff;font-size:15px;font-weight:650;margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);transition:color 200ms var(--ease)}
.footer-col ul a:hover{color:var(--primary)}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  margin-top:56px;padding:24px 0;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- Motion ---------- */
.js-rise{opacity:0;transform:translateY(16px);transition:opacity 560ms var(--ease),transform 560ms var(--ease)}
.js-rise.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .js-rise{transform:none;transition:opacity 320ms linear}
  .card:hover,.tag:hover,.pager-item:hover{transform:none}
  .btn:hover .arw,.link-arrow:hover .arw{transform:none}
}

/* ---------- Breakpoints ---------- */
@media (max-width:1199px){
  .article-hero{padding:132px 0 52px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .hamburger{display:flex}
  .header-inner{height:72px;gap:16px}
  .site-header{height:72px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px 0}
  .footer-col:nth-child(3){border-left:0;padding-left:0}
  .footer-col{padding:0 20px}
  .footer-col:nth-child(odd){padding-left:0}
  .footer-col:nth-child(even){padding-right:0}
  .article-hero{padding:120px 0 48px}
}
@media (max-width:767px){
  .header-actions .btn--primary{display:none}
  .article-hero{padding:104px 0 40px}
  .article-meta{gap:10px;font-size:13px}
  .article-layout{padding-top:44px}
  .prose{font-size:16px;line-height:1.9}
  .prose h2{font-size:22px;margin:38px 0 16px}
  .prose h3{font-size:18.5px}
  .section{padding:64px 0}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .pager{grid-template-columns:minmax(0,1fr);gap:16px}
  .pager-item.is-next{text-align:left}
  .pager-item.is-next .dir{justify-content:flex-start}
  .section-head{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .footer-col{padding:0!important;border-left:0!important}
  .footer-bottom{margin-top:40px}
}
@media (max-width:520px){
  .logo-text{font-size:16px}
  .article-title{font-size:26px}
  .article-meta{flex-direction:column;align-items:flex-start;gap:8px}
  .article-meta .dot{display:none}
  .card-body{padding:20px}
  .btn{width:100%;justify-content:center}
  .btn--sm{width:auto}
  .reading-note{padding:18px 20px}
}

/* roulang page: category1 */
:root{
  --primary:#F2571F;
  --primary-h:#D84512;
  --secondary:#123B3A;
  --accent:#17C3B2;
  --warn:#FFB020;
  --bg:#FAF8F5;
  --bg-alt:#F2EFE9;
  --surface:#FFFFFF;
  --ink-900:#0F1211;
  --ink-700:#2A2F2D;
  --ink-500:#5B6462;
  --ink-300:#98A09D;
  --line:#E4E2DD;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,18,17,.04), 0 8px 24px -12px rgba(15,18,17,.10);
  --sh-2:0 18px 40px -18px rgba(15,18,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t1:200ms;
  --t2:320ms;
  --t3:560ms;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:750;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
@media(min-width:1440px){.container{max-width:1320px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:76px;
  display:flex;align-items:center;
  background:rgba(15,18,17,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background var(--t2) var(--ease), box-shadow var(--t2) var(--ease), border-color var(--t2) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(250,248,245,.92);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  backdrop-filter:blur(10px) saturate(140%);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}

.brand{display:flex;align-items:center;gap:12px;min-height:44px}
.logo-mark{
  width:34px;height:34px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  grid-template-rows:repeat(3,1fr);
  gap:3px;
  flex:0 0 auto;
}
.logo-mark i{display:block;border-radius:2px;background:rgba(255,255,255,.42);transition:background var(--t2) var(--ease)}
.logo-mark i:nth-child(1),.logo-mark i:nth-child(5),.logo-mark i:nth-child(9){background:var(--primary)}
.logo-mark i:nth-child(3),.logo-mark i:nth-child(7){background:var(--accent)}
.site-header.is-scrolled .logo-mark i{background:rgba(15,18,17,.18)}
.site-header.is-scrolled .logo-mark i:nth-child(1),
.site-header.is-scrolled .logo-mark i:nth-child(5),
.site-header.is-scrolled .logo-mark i:nth-child(9){background:var(--primary)}
.site-header.is-scrolled .logo-mark i:nth-child(3),
.site-header.is-scrolled .logo-mark i:nth-child(7){background:var(--accent)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:#fff;transition:color var(--t2) var(--ease)}
.site-header.is-scrolled .logo-text{color:var(--ink-900)}

.nav-menu{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  font-size:15px;font-weight:600;
  color:rgba(255,255,255,.86);
  padding:6px 0;
  min-height:44px;display:inline-flex;align-items:center;
  transition:color var(--t1) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--primary);transition:width var(--t2) var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{width:16px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:16px}
.site-header.is-scrolled .nav-link{color:var(--ink-700)}
.site-header.is-scrolled .nav-link:hover{color:var(--ink-900)}
.site-header.is-scrolled .nav-link.is-active{color:var(--primary)}

.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.06);
  border-radius:var(--r-sm);
  cursor:pointer;
  padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform var(--t2) var(--ease),opacity var(--t2) var(--ease),background var(--t2) var(--ease)}
.site-header.is-scrolled .nav-toggle{border-color:var(--line);background:rgba(15,18,17,.04)}
.site-header.is-scrolled .nav-toggle span{background:var(--ink-900)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:650;
  font-family:var(--font-sans);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background var(--t1) var(--ease),color var(--t1) var(--ease),border-color var(--t1) var(--ease),transform var(--t1) var(--ease),box-shadow var(--t1) var(--ease);
}
.btn .arw{transition:transform var(--t1) var(--ease);font-family:var(--font-num)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--primary);color:#fff}
.btn--primary:hover{background:var(--primary-h)}
.btn--outline{border-color:var(--ink-900);color:var(--ink-900);background:transparent}
.btn--outline:hover{background:var(--ink-900);color:#fff}
.btn--ghost-light{border-color:rgba(255,255,255,.5);color:#fff;background:rgba(255,255,255,.04)}
.btn--ghost-light:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--light{background:#fff;color:var(--ink-900)}
.btn--light:hover{background:var(--bg-alt)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}

/* ---------- 通用文字组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(242,87,31,.10);
  color:var(--primary);
  font-size:12px;font-weight:600;letter-spacing:.08em;
  margin-bottom:20px;
}
.eyebrow--light{background:rgba(255,255,255,.12);color:#fff}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:var(--bg-alt);color:var(--ink-500);
}
.badge--primary{background:rgba(242,87,31,.10);color:var(--primary)}
.badge--accent{background:rgba(23,195,178,.14);color:#0E8C80}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:650;
  min-height:44px;
}
.link-more .arw{transition:transform var(--t1) var(--ease);font-family:var(--font-num)}
.link-more:hover{text-decoration:underline;text-underline-offset:3px}
.link-more:hover .arw{transform:translateX(4px)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  padding:170px 0 96px;
  min-height:660px;
  display:flex;align-items:center;
  background-color:var(--ink-900);
  background-image:linear-gradient(120deg,rgba(15,18,17,.94) 0%,rgba(15,18,17,.80) 42%,rgba(18,59,58,.76) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:rgba(255,255,255,.84);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,195,178,.5),transparent);
}
.hero-inner{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
  width:100%;
  position:relative;z-index:2;
}
.hero h1{
  color:#fff;
  font-size:clamp(40px,5.4vw,64px);
  line-height:1.06;
  letter-spacing:-.03em;
  font-weight:800;
  margin-bottom:22px;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:560px;
  margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-facts{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
}
.fact{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-md);
  padding:22px 20px;
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  transition:border-color var(--t2) var(--ease),background var(--t2) var(--ease);
}
.fact:hover{border-color:rgba(23,195,178,.55);background:rgba(255,255,255,.10)}
.fact-num{
  display:block;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:#fff;
  letter-spacing:-.02em;
  line-height:1.2;
  margin-bottom:6px;
}
.fact-label{font-size:13px;color:rgba(255,255,255,.68);letter-spacing:.02em}

/* ---------- 板块 ---------- */
.section{padding:100px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:80px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head--stack{display:block;max-width:720px}
.section-title{
  position:relative;
  font-size:clamp(28px,3.2vw,40px);
  line-height:1.15;
  letter-spacing:-.02em;
  padding-left:18px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  border-radius:2px;background:var(--primary);
}
.section-desc{
  margin-top:16px;
  font-size:16px;line-height:1.85;color:var(--ink-500);max-width:680px;
}
.section-head--stack .section-desc{margin-top:18px}

/* ---------- 三步路线：1 大 2 小 ---------- */
.route-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:start;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:transform var(--t2) var(--ease),box-shadow var(--t2) var(--ease),border-color var(--t2) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform var(--t3) var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:28px}
.card-index{
  font-family:var(--font-num);
  font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--primary);
  display:block;margin-bottom:12px;
}
.card-title{font-size:24px;line-height:1.3;font-weight:700;margin-bottom:12px}
.card-text{font-size:15px;line-height:1.85;color:var(--ink-500);margin-bottom:18px}
.card:hover .link-more{text-decoration:underline;text-underline-offset:3px}

.route-side{display:grid;gap:24px}
.mini-card{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:20px;
  align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:26px 24px;
  transition:transform var(--t2) var(--ease),box-shadow var(--t2) var(--ease),border-color var(--t2) var(--ease);
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.mini-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;
  color:var(--secondary);
  background:rgba(23,195,178,.14);
  border-radius:var(--r-sm);
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.mini-card h3{font-size:19px;font-weight:700;margin-bottom:8px;line-height:1.35}
.mini-card p{font-size:15px;line-height:1.8;color:var(--ink-500)}

/* ---------- 进入前准备 ---------- */
.prep-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.prep-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  border:1px solid var(--line);
  aspect-ratio:4/3;
}
.prep-media img{width:100%;height:100%;object-fit:cover}
.prep-list{display:grid;gap:6px;margin-top:28px}
.prep-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  padding:18px 0;
  border-top:1px solid var(--line);
  align-items:start;
}
.prep-item:last-child{border-bottom:1px solid var(--line)}
.prep-check{
  width:26px;height:26px;border-radius:var(--r-pill);
  background:rgba(23,195,178,.16);
  color:#0E8C80;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  margin-top:4px;
  flex:0 0 auto;
  font-family:var(--font-num);
}
.prep-item h4{font-size:17px;font-weight:650;margin-bottom:4px}
.prep-item p{font-size:14.5px;line-height:1.8;color:var(--ink-500)}

/* ---------- 图文行列表 ---------- */
.rows{border-top:1px solid var(--line)}
.row{
  display:grid;
  grid-template-columns:96px 1fr auto;
  gap:24px;
  align-items:center;
  padding:20px 16px;
  border-bottom:1px solid var(--line);
  transition:background var(--t1) var(--ease);
}
.row:hover{background:var(--bg-alt)}
.row-thumb{
  width:96px;height:72px;
  border-radius:10px;
  overflow:hidden;
  background:var(--bg-alt);
  flex:0 0 auto;
}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--t3) var(--ease)}
.row:hover .row-thumb img{transform:scale(1.05)}
.row-title{
  font-size:17px;font-weight:650;color:var(--ink-900);
  line-height:1.45;
  margin-bottom:6px;
  transition:color var(--t1) var(--ease);
}
.row:hover .row-title{color:var(--primary)}
.row-desc{
  font-size:14px;line-height:1.7;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-arrow{
  font-family:var(--font-num);
  color:var(--primary);font-size:18px;
  transition:transform var(--t1) var(--ease);
  padding:0 4px;
}
.row:hover .row-arrow{transform:translateX(4px)}

/* ---------- 底部 CTA 条 ---------- */
.cta-bar{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-bar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  flex-wrap:wrap;
}
.cta-bar h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;margin-bottom:10px}
.cta-bar p{font-size:15.5px;color:var(--ink-500);max-width:620px}
.cta-points{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--ink-700);font-weight:600;
}
.cta-points span::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(135deg,#0F1211 0%,#16302E 100%);
  color:rgba(255,255,255,.68);
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-col h4{
  color:#fff;font-size:15px;font-weight:700;
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.footer-col ul{display:grid;gap:2px}
.footer-col ul a{
  display:inline-flex;align-items:center;
  min-height:40px;
  font-size:14px;color:rgba(255,255,255,.68);
  transition:color var(--t1) var(--ease);
}
.footer-col ul a:hover{color:var(--primary)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .logo-text{color:#fff;font-size:17px;font-weight:800}
.footer-contact{margin-top:14px;font-family:var(--font-num);color:rgba(255,255,255,.5);font-size:13px}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--t3) var(--ease),transform var(--t3) var(--ease);
}
.reveal.is-in{opacity:1;transform:translateY(0)}
.reveal:nth-child(2){transition-delay:60ms}
.reveal:nth-child(3){transition-delay:120ms}
.reveal:nth-child(4){transition-delay:180ms}

/* ---------- 响应式 ---------- */
@media(min-width:1200px) and (max-width:1439px){
  .container{max-width:1160px}
}
@media(max-width:1199px){
  .container{max-width:960px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media(max-width:991px){
  .container{padding:0 32px}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .nav-menu{
    position:fixed;
    top:0;right:0;
    height:100dvh;
    width:min(340px,86vw);
    background:#0F1211;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:96px 24px 32px;
    transform:translateX(102%);
    transition:transform var(--t2) var(--ease);
    box-shadow:-20px 0 40px -20px rgba(0,0,0,.5);
    overflow-y:auto;
    z-index:95;
  }
  .nav-menu.is-open{transform:translateX(0)}
  .nav-link{
    color:#fff;
    font-size:20px;
    padding:18px 0;
    min-height:0;
    border-bottom:1px solid rgba(255,255,255,.08);
    display:flex;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--primary)}
  .site-header.is-scrolled .nav-link{color:#fff}
  .site-header.is-scrolled .nav-link.is-active{color:var(--primary)}

  .hero{padding:140px 0 80px;min-height:0}
  .hero h1{font-size:clamp(32px,6vw,40px)}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-facts{max-width:520px}
  .section{padding:72px 0}
  .section--tight{padding:64px 0}
  .route-grid{grid-template-columns:1fr}
  .prep-grid{grid-template-columns:1fr;gap:32px}
  .prep-media{aspect-ratio:16/10}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:36px}
  .row{grid-template-columns:80px 1fr;gap:18px;padding:18px 8px}
  .row-thumb{width:80px;height:64px}
  .row-arrow{display:none}
}
@media(max-width:767px){
  body{font-size:15px;line-height:1.9}
  .container{padding:0 20px}
  .site-header{height:60px}
  .logo-text{font-size:16px}
  .hero{padding:120px 0 64px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .section{padding:56px 0}
  .section--tight{padding:52px 0}
  .card-body{padding:20px}
  .card-title{font-size:20px}
  .mini-card{padding:20px}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-bar{padding:52px 0}
  .cta-bar-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-bar-inner .btn{width:100%}
}
@media(max-width:520px){
  .hero h1{font-size:32px;line-height:1.14}
  .section-title{font-size:24px}
  .hero-facts{grid-template-columns:1fr 1fr;gap:10px}
  .fact{padding:16px 14px}
  .fact-num{font-size:20px}
  .fact-label{font-size:12px}
  .prep-item h4{font-size:16px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .section-head .link-more{width:auto}
}
@media(prefers-reduced-motion:reduce){
  .reveal{transform:none;transition:opacity 200ms linear}
  .card:hover,.mini-card:hover,.row:hover .row-thumb img,.card:hover .card-media img{transform:none}
  .btn:hover .arw,.link-more:hover .arw,.row:hover .row-arrow{transform:none}
}

/* roulang page: category2 */
:root{
  --primary:#F2571F;
  --primary-d:#D84512;
  --secondary:#123B3A;
  --accent:#17C3B2;
  --warn:#FFB020;
  --bg:#FAF8F5;
  --bg-alt:#F2EFE9;
  --surface:#FFFFFF;
  --ink-900:#0F1211;
  --ink-700:#2A2F2D;
  --ink-500:#5B6462;
  --ink-300:#98A09D;
  --line:#E4E2DD;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,18,17,.04), 0 8px 24px -12px rgba(15,18,17,.10);
  --sh-2:0 18px 40px -18px rgba(15,18,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t1:200ms;
  --t2:320ms;
  --t3:560ms;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
svg{display:block}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:1199px){.container{max-width:1160px}}
@media (max-width:991px){.container{padding:0 32px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(15,18,17,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background var(--t2) var(--ease),box-shadow var(--t2) var(--ease),border-color var(--t2) var(--ease);
}
.header-inner{height:76px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:750;font-size:17px;letter-spacing:.01em;transition:color var(--t2) var(--ease)}
.logo-mark{display:grid;grid-template-columns:repeat(3,6px);grid-template-rows:repeat(3,6px);gap:2px;flex:0 0 auto}
.logo-mark i{display:block;border-radius:2px;background:rgba(255,255,255,.72);transition:background var(--t2) var(--ease)}
.logo-mark i:nth-child(1),.logo-mark i:nth-child(5),.logo-mark i:nth-child(9){background:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;font-weight:600;color:rgba(255,255,255,.82);
  border-radius:var(--r-sm);
  transition:color var(--t1) var(--ease),background var(--t1) var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.10)}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--primary);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);border-radius:var(--r-sm);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;transition:background var(--t1) var(--ease),border-color var(--t1) var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:background var(--t2) var(--ease)}
.nav-toggle:hover{background:rgba(255,255,255,.14)}

.is-scrolled{background:rgba(250,248,245,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.is-scrolled .brand{color:var(--ink-900)}
.is-scrolled .logo-mark i{background:rgba(15,18,17,.72)}
.is-scrolled .logo-mark i:nth-child(1),.is-scrolled .logo-mark i:nth-child(5),.is-scrolled .logo-mark i:nth-child(9){background:var(--primary)}
.is-scrolled .nav-link{color:var(--ink-700)}
.is-scrolled .nav-link:hover{color:var(--ink-900);background:var(--bg-alt)}
.is-scrolled .nav-link.is-active{color:var(--primary)}
.is-scrolled .nav-toggle{border-color:var(--line);background:transparent}
.is-scrolled .nav-toggle span{background:var(--ink-900)}

@media (max-width:991px){
  .header-inner{height:60px;gap:16px}
  .nav-menu{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:flex}
}

/* 移动抽屉 */
.drawer-overlay{
  position:fixed;inset:0;z-index:65;background:rgba(15,18,17,.5);
  opacity:0;visibility:hidden;transition:opacity var(--t2) var(--ease),visibility var(--t2);
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:70;width:min(84vw,360px);
  background:var(--bg);padding:88px 24px 28px;display:flex;flex-direction:column;
  transform:translateX(101%);transition:transform var(--t2) var(--ease);
  box-shadow:-24px 0 60px rgba(15,18,17,.24);overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer a.drawer-link{
  display:block;padding:16px 0;font-size:20px;font-weight:650;color:var(--ink-900);
  border-bottom:1px solid var(--line);transition:color var(--t1) var(--ease);
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.is-active{color:var(--primary)}
.drawer .btn{margin-top:auto;width:100%;justify-content:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:650;line-height:1;border:1px solid transparent;cursor:pointer;
  transition:background var(--t1) var(--ease),color var(--t1) var(--ease),border-color var(--t1) var(--ease),transform var(--t1) var(--ease),box-shadow var(--t2) var(--ease);
}
.btn .arw{transition:transform var(--t1) var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--primary);color:#fff}
.btn--primary:hover{background:var(--primary-d);box-shadow:var(--sh-2)}
.btn--ghost{border-color:var(--ink-900);color:var(--ink-900);background:transparent}
.btn--ghost:hover{background:var(--ink-900);color:#fff}
.btn--ghost-light{border-color:rgba(255,255,255,.52);color:#fff;background:transparent}
.btn--ghost-light:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--light{background:#fff;color:var(--ink-900)}
.btn--light:hover{background:var(--primary);color:#fff}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--block{width:100%}

/* ---------- 徽标 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.08em;line-height:1.4;
}
.badge--primary{background:rgba(242,87,31,.10);color:var(--primary)}
.badge--neutral{background:var(--bg-alt);color:var(--ink-500)}
.badge--onDark{background:rgba(242,87,31,.16);color:#FFC7AE;border:1px solid rgba(242,87,31,.42)}
.badge--accent{background:rgba(23,195,178,.12);color:#0E8D81}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;display:flex;align-items:center;
  min-height:min(72vh,620px);padding:150px 0 96px;background:var(--secondary);
}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.03)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,18,17,.90) 0%,rgba(18,59,58,.84) 100%)}
.hero-inner{position:relative;z-index:2;color:#fff}
.hero--center .hero-inner{
  max-width:860px;margin:0 auto;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:20px;
}
.hero h1{
  margin:0;font-size:clamp(32px,5.4vw,62px);line-height:1.08;font-weight:800;
  letter-spacing:-.03em;color:#fff;max-width:16em;
}
.hero-sub{margin:0;font-size:17px;line-height:1.75;color:rgba(255,255,255,.84);max-width:36em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:6px}
.hero-note{margin:6px 0 0;font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.01em}
@media (max-width:991px){
  .hero{padding:120px 0 72px;min-height:auto}
  .hero h1{font-size:clamp(32px,6vw,40px)}
}
@media (max-width:767px){
  .hero{padding:104px 0 56px}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
}

/* ---------- 板块 ---------- */
.section{padding:110px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding-top:88px;padding-bottom:88px}
.section--dark{background:linear-gradient(135deg,#0F1211 0%,#16302E 100%);color:rgba(255,255,255,.78)}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark p{color:rgba(255,255,255,.72)}
@media (max-width:991px){.section{padding:72px 0}.section--tight{padding:64px 0}}
@media (max-width:767px){.section{padding:56px 0}.section--tight{padding:52px 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:12px;font-weight:700;letter-spacing:.14em;color:var(--primary);margin-bottom:14px}
h2{
  margin:0 0 14px;font-size:clamp(24px,3.2vw,42px);line-height:1.15;font-weight:750;
  letter-spacing:-.02em;color:var(--ink-900);
}
h3{margin:0 0 8px;font-size:20px;line-height:1.35;font-weight:700;color:var(--ink-900)}
h4{margin:0 0 6px;font-size:16px;line-height:1.45;font-weight:650;color:var(--ink-900)}
.section-head p,.lead{margin:0;font-size:16px;color:var(--ink-500);max-width:44em}
.section--dark .section-head p{color:rgba(255,255,255,.72)}

/* ---------- 四列要点图墙 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 24px;display:flex;flex-direction:column;gap:14px;
  transition:transform var(--t2) var(--ease),box-shadow var(--t2) var(--ease),border-color var(--t2) var(--ease);
}
.point-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.point-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(242,87,31,.10);color:var(--primary);
}
.point-icon svg{width:24px;height:24px}
.point-index{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.08em;color:var(--ink-300)}
.point-card p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500)}
@media (max-width:1199px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-4{grid-template-columns:1fr}.point-card{padding:22px 20px}}

/* ---------- 节奏 / 步骤 ---------- */
.flow-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.flow-figure{margin:0}
.flow-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.steps{counter-reset:step;margin-top:28px}
.steps li{counter-increment:step;position:relative;padding:0 0 26px 52px}
.steps li:last-child{padding-bottom:0}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--secondary);color:#fff;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:12px;font-weight:700;
}
.steps li::after{content:"";position:absolute;left:15px;top:40px;bottom:6px;width:1px;background:var(--line)}
.steps li:last-child::after{display:none}
.steps p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500)}
@media (max-width:991px){
  .flow-wrap{grid-template-columns:1fr;gap:36px}
  .flow-figure{order:-1}
}

/* ---------- 对照列表 ---------- */
.compare-list{border-top:1px solid var(--line)}
.compare-row{
  display:grid;grid-template-columns:280px 1fr;gap:36px;
  padding:26px 20px;border-bottom:1px solid var(--line);
  transition:background var(--t1) var(--ease);
}
.compare-row:hover{background:var(--bg-alt)}
.compare-left{display:flex;flex-direction:column;gap:8px}
.compare-right{display:flex;flex-direction:column;gap:8px}
.compare-tag{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-300)}
.compare-tag--fix{color:var(--primary)}
.compare-left h3{font-size:17px;color:var(--ink-900);margin:0}
.compare-right p{margin:0;font-size:15px;line-height:1.85;color:var(--ink-500)}
@media (max-width:767px){
  .compare-row{grid-template-columns:1fr;gap:14px;padding:22px 0}
}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:920px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:20px;min-height:64px;padding:16px 0;
  background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:650;color:var(--ink-900);
  transition:color var(--t1) var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--ink-300);flex:0 0 auto}
.faq-q .qtext{flex:1 1 auto}
.faq-q .icon{position:relative;width:20px;height:20px;flex:0 0 20px;color:var(--accent);transition:transform var(--t2) var(--ease)}
.faq-q .icon::before,.faq-q .icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-q .icon::before{left:0;right:0;top:9px;height:2px}
.faq-q .icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity var(--t2) var(--ease)}
.faq-q[aria-expanded="true"] .icon{transform:rotate(180deg)}
.faq-q[aria-expanded="true"] .icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height var(--t2) var(--ease)}
.faq-a-inner{max-width:720px;padding:0 0 24px 44px;font-size:15px;line-height:1.9;color:var(--ink-500)}
@media (max-width:600px){.faq-a-inner{padding-left:0}}

/* ---------- CTA 与表单 ---------- */
.cta-strip{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px;display:grid;grid-template-columns:1fr 420px;gap:48px;align-items:center;
}
.cta-copy h2{margin-bottom:12px}
.cta-copy p{margin:0;font-size:16px;color:var(--ink-500);max-width:38em}
.check-list{margin-top:24px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:28px;font-size:15px;line-height:1.75;color:var(--ink-500)}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:13px;height:7px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}
.mini-form{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:28px;box-shadow:var(--sh-1)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;color:var(--ink-900);
  transition:border-color var(--t1) var(--ease),outline-color var(--t1) var(--ease);
}
.field input::placeholder{color:var(--ink-300)}
.field input:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:2px;border-color:var(--accent)}
.form-note{margin:14px 0 0;font-size:12px;line-height:1.7;color:var(--ink-300)}
.form-note.is-ok{color:#0E8D81}
@media (max-width:991px){
  .cta-strip{grid-template-columns:1fr;gap:32px;padding:32px}
}
@media (max-width:600px){
  .cta-strip{padding:24px 20px;border-radius:var(--r-md)}
  .mini-form{padding:22px 20px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1211;color:rgba(255,255,255,.66);padding:76px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:750;font-size:17px;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin:0 0 18px}
.footer-col ul{display:grid;gap:12px}
.footer-col p{font-size:14px;line-height:1.85;margin:0 0 12px;color:rgba(255,255,255,.62)}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color var(--t1) var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-contact{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:rgba(255,255,255,.45);margin-top:6px}
.footer-col .btn--light{margin-top:14px}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}
@media (max-width:991px){
  .site-footer{padding:56px 0 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{margin-top:36px}
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity var(--t3) var(--ease),transform var(--t3) var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:opacity 200ms linear}
  .btn:hover .arw{transform:none}
  .point-card:hover{transform:none}
}

/* roulang page: category3 */
:root{
  --primary:#F2571F;
  --primary-d:#D84512;
  --secondary:#123B3A;
  --accent:#17C3B2;
  --warn:#FFB020;
  --bg:#FAF8F5;
  --bg-alt:#F2EFE9;
  --surface:#FFFFFF;
  --ink-900:#0F1211;
  --ink-700:#2A2F2D;
  --ink-500:#5B6462;
  --ink-300:#98A09D;
  --line:#E4E2DD;
  --line-dark:rgba(255,255,255,.08);
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,18,17,.04),0 8px 24px -12px rgba(15,18,17,.10);
  --sh-2:0 18px 40px -18px rgba(15,18,17,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-500);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:750;letter-spacing:-.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(242,87,31,.18)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:1199px){.container{max-width:100%;padding:0 32px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:76px;
  display:flex;
  align-items:center;
  background:rgba(15,18,17,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  transition:background .32s var(--ease),height .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.site-header.is-scrolled{
  height:68px;
  background:rgba(250,248,245,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{display:flex;align-items:center;gap:32px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.01em;transition:color .32s var(--ease);min-height:44px}
.site-header.is-scrolled .brand{color:var(--ink-900)}
.logo-mark{display:grid;grid-template-columns:repeat(3,4px);grid-template-rows:repeat(3,4px);gap:2px}
.logo-mark i{display:block;width:4px;height:4px;border-radius:1px;background:var(--primary)}
.logo-mark i:nth-child(5){background:var(--accent)}
.logo-text{white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{
  position:relative;
  padding:8px 0;
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.82);
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:width .32s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{width:16px}
.site-header.is-scrolled .nav-link{color:var(--ink-500)}
.site-header.is-scrolled .nav-link:hover{color:var(--ink-900)}
.site-header.is-scrolled .nav-link.is-active{color:var(--primary)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
  transition:background .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease);
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.site-header.is-scrolled .nav-toggle{color:var(--ink-900);border-color:var(--line)}

/* 抽屉 */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(15,18,17,.5);
  opacity:0;
  visibility:hidden;
  transition:opacity .32s var(--ease),visibility .32s var(--ease);
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  z-index:80;
  width:min(360px,86vw);
  background:var(--surface);
  padding:20px 24px 28px;
  transform:translateX(102%);
  transition:transform .32s var(--ease);
  box-shadow:-24px 0 48px -24px rgba(15,18,17,.35);
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink-900)}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:var(--r-sm);font-size:20px;color:var(--ink-500);border:1px solid var(--line)}
.drawer-close:hover{color:var(--ink-900);border-color:var(--ink-300)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{font-size:20px;font-weight:650;color:var(--ink-900);padding:18px 0;border-bottom:1px solid var(--line);min-height:44px;display:flex;align-items:center}
.drawer-nav a.is-active{color:var(--primary)}
.drawer-cta{margin-top:auto;padding-top:24px}
.drawer-cta .btn{width:100%;justify-content:center}

/* ---------- 按钮 / 链接 / 徽标 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-sm);
  font-size:15px;
  font-weight:650;
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .32s var(--ease),color .32s var(--ease),border-color .32s var(--ease),transform .2s var(--ease),box-shadow .32s var(--ease);
}
.btn .arw{transition:transform .32s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:scale(.98)}
.btn--primary{background:var(--primary);color:#fff}
.btn--primary:hover{background:var(--primary-d)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--outline{background:transparent;border-color:var(--ink-900);color:var(--ink-900)}
.btn--outline:hover{background:var(--ink-900);color:#fff}
.btn--light{background:#fff;color:var(--ink-900)}
.btn--light:hover{background:var(--bg-alt)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-size:15px;
  font-weight:650;
  white-space:nowrap;
}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}
.text-link .arw{transition:transform .32s var(--ease)}
.text-link:hover .arw{transform:translateX(4px)}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.4;
}
.badge--primary{background:rgba(242,87,31,.1);color:var(--primary)}
.badge--neutral{background:var(--bg-alt);color:var(--ink-500)}
.badge--light{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.18)}

/* ---------- 板块 ---------- */
.section{padding:104px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding-top:0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.sec-head h2{
  position:relative;
  padding-left:18px;
  font-size:clamp(26px,3vw,40px);
  line-height:1.15;
  font-weight:750;
}
.sec-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.18em;bottom:.12em;
  width:4px;
  border-radius:2px;
  background:var(--primary);
}
.sec-head p{padding-left:18px;margin-top:12px;font-size:15px;color:var(--ink-500);max-width:660px;line-height:1.8}
@media (max-width:991px){
  .section{padding:72px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
}

/* ---------- HERO ---------- */
.hero{position:relative;padding-top:76px;background:var(--bg)}
.hero-grid{display:grid;grid-template-columns:1.9fr 1fr;gap:16px;align-items:stretch}
.hero-main{
  position:relative;
  min-height:min(70vh,600px);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--ink-900);
}
.hero-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-main::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:linear-gradient(180deg,rgba(15,18,17,.12) 0%,rgba(15,18,17,.48) 56%,rgba(15,18,17,.88) 100%);
}
.hero-panel{
  position:absolute;
  right:0;bottom:0;
  z-index:2;
  max-width:640px;
  padding:36px 40px 38px;
  background:rgba(15,18,17,.72);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-top-left-radius:var(--r-lg);
  border-left:1px solid rgba(255,255,255,.1);
  border-top:1px solid rgba(255,255,255,.1);
}
.hero-panel h1{
  color:#fff;
  font-size:clamp(30px,3.4vw,46px);
  line-height:1.1;
  letter-spacing:-.03em;
  font-weight:800;
  margin:16px 0 0;
}
.hero-panel .hero-sub{
  color:rgba(255,255,255,.82);
  font-size:16px;
  line-height:1.8;
  margin-top:14px;
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-note{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.66);
}
.hero-note b{color:var(--warn);font-family:var(--font-num);font-variant-numeric:tabular-nums;font-weight:700}
.hero-side{display:grid;grid-template-rows:1fr 1fr;gap:16px}
.hero-side figure{margin:0;position:relative;border-radius:var(--r-lg);overflow:hidden;min-height:220px;background:var(--ink-900)}
.hero-side img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .56s var(--ease)}
.hero-side figure:hover img{transform:scale(1.04)}
.hero-side figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,18,17,0) 42%,rgba(15,18,17,.78) 100%)}
.hero-side figcaption{
  position:absolute;
  left:18px;right:18px;bottom:16px;
  z-index:2;
  color:#fff;
  font-size:14px;
  font-weight:600;
  line-height:1.5;
}
.hero-side figcaption span{display:block;font-size:12px;font-weight:500;color:rgba(255,255,255,.7);margin-top:4px;letter-spacing:.06em}

/* ---------- 步骤流 ---------- */
.step-flow{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.step-flow::before{
  content:"";
  position:absolute;
  left:44px;right:64px;top:22px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,rgba(242,87,31,.5),rgba(23,195,178,.5));
}
.step{position:relative;padding-top:66px}
.step-num{
  position:absolute;
  top:0;left:0;
  z-index:2;
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--surface);
  border:2px solid var(--primary);
  color:var(--primary);
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  font-weight:700;
  box-shadow:var(--sh-1);
}
.step h3{font-size:19px;line-height:1.4;font-weight:700;margin-bottom:10px}
.step p{font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- 宽幅推荐卡 ---------- */
.wide-cards{display:grid;gap:20px}
.wide-card{
  display:grid;
  grid-template-columns:260px 1fr auto;
  align-items:center;
  gap:28px;
  padding:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.wide-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--primary)}
.wide-card figure{margin:0;border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/10}
.wide-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .56s var(--ease)}
.wide-card:hover figure img{transform:scale(1.04)}
.wide-card h3{font-size:21px;line-height:1.35;font-weight:700;margin:10px 0 10px}
.wide-card p{font-size:15px;line-height:1.85;color:var(--ink-500);max-width:56em}
.wide-card .wide-cta{display:flex;align-items:center;padding-right:8px}

/* ---------- 对照速查 ---------- */
.compare{border-top:1px solid var(--line)}
.compare-row{
  display:grid;
  grid-template-columns:280px 1fr;
  gap:32px;
  align-items:start;
  padding:24px 12px;
  border-bottom:1px solid var(--line);
  transition:background .32s var(--ease);
}
.compare-row:hover{background:var(--bg-alt)}
.compare-key{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:650;color:var(--ink-900)}
.compare-key i{
  flex:none;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}
.compare-val{font-size:15px;line-height:1.85;color:var(--ink-500)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
  padding:16px 0;
  text-align:left;
  font-size:17px;
  font-weight:650;
  color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q .faq-index{
  flex:none;
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--ink-300);
  letter-spacing:.04em;
}
.faq-icon{
  flex:none;
  margin-left:auto;
  width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);
  font-size:20px;
  line-height:1;
  transition:transform .32s var(--ease);
}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a-inner{
  max-width:720px;
  padding:0 0 26px 41px;
  font-size:15px;
  line-height:1.9;
  color:var(--ink-500);
}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:linear-gradient(135deg,#0F1211 0%,#16302E 100%);
  color:#fff;
  padding:88px 0;
}
.cta-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(26px,3vw,40px);line-height:1.15}
.cta-band p{color:rgba(255,255,255,.76);font-size:16px;line-height:1.9;margin-top:16px;max-width:44em}
.cta-list{display:grid;gap:12px;margin-top:26px}
.cta-list li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.86);font-size:15px;line-height:1.75}
.cta-list .tick{
  flex:none;
  width:20px;height:20px;
  margin-top:4px;
  border-radius:50%;
  background:rgba(23,195,178,.18);
  color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
  font-weight:700;
}
.cta-actions{display:grid;gap:16px;padding:28px;border:1px solid var(--line-dark);border-radius:var(--r-md);background:rgba(255,255,255,.03)}
.cta-actions .btn{width:100%}
.cta-actions p{font-size:13px;color:rgba(255,255,255,.6);margin:0;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F1211;color:rgba(255,255,255,.68);padding:72px 0 32px;font-size:14px}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-dark);
}
.footer-col + .footer-col{border-left:1px solid var(--line-dark);padding-left:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:0}
.footer-col p{line-height:1.85}
.footer-contact{margin-top:12px;color:rgba(255,255,255,.5)}
.footer-col ul{display:grid;gap:12px}
.footer-col ul a{transition:color .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary)}
.footer-col .btn{margin-top:18px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
  justify-content:space-between;
  padding-top:26px;
  color:rgba(255,255,255,.46);
  font-size:13px;
}
.footer-bottom a:hover{color:var(--primary)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .56s var(--ease),transform .56s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-menu{gap:20px}
  .nav-link{font-size:14px}
}
@media (max-width:991px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn--primary{display:none}
  .hero{padding-top:60px}
  .hero-grid{grid-template-columns:1fr;gap:14px}
  .hero-main{min-height:440px}
  .hero-panel{max-width:none;padding:28px}
  .hero-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .hero-side figure{min-height:170px}
  .step-flow{grid-template-columns:1fr 1fr;gap:34px 24px}
  .step-flow::before{display:none}
  .step{padding-top:58px}
  .step::before{
    content:"";
    position:absolute;
    left:21px;top:50px;bottom:-34px;
    width:2px;
    background:linear-gradient(180deg,rgba(242,87,31,.45),rgba(23,195,178,.35));
  }
  .step:last-child::before{display:none}
  .wide-card{grid-template-columns:200px 1fr;gap:22px}
  .wide-card .wide-cta{grid-column:1 / -1;padding:0 0 4px}
  .compare-row{grid-template-columns:1fr;gap:8px;padding:20px 8px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-col + .footer-col{border-left:0;padding-left:0}
  .footer-col:nth-child(even){border-left:1px solid var(--line-dark);padding-left:32px}
}
@media (max-width:767px){
  .site-header{height:60px}
  .site-header.is-scrolled{height:60px}
  .brand{font-size:16px}
  .hero{padding-top:60px}
  .hero-main{min-height:0;display:flex;flex-direction:column;border-radius:var(--r-md)}
  .hero-main img{position:static;height:230px;width:100%}
  .hero-main::after{display:none}
  .hero-panel{
    position:static;
    max-width:none;
    padding:26px 22px 30px;
    background:linear-gradient(150deg,#0F1211,#16302E);
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    border-radius:0;
    border:0;
  }
  .hero-panel h1{font-size:clamp(28px,8vw,36px)}
  .hero-actions{flex-direction:column;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-side{grid-template-columns:1fr}
  .hero-side figure{min-height:150px}
  .step-flow{grid-template-columns:1fr;gap:30px}
  .step::before{bottom:-30px}
  .wide-card{grid-template-columns:1fr;padding:16px}
  .wide-card figure{aspect-ratio:16/9}
  .wide-card h3{font-size:19px}
  .faq-q{font-size:16px;gap:12px}
  .faq-a-inner{padding-left:0}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col:nth-child(even){border-left:0;padding-left:0}
  .footer-col + .footer-col{border-top:1px solid var(--line-dark);padding-top:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .btn{width:100%}
  .sec-head .text-link{width:auto}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{transform:none}
  .hero-side figure:hover img,.wide-card:hover figure img{transform:none}
  .wide-card:hover{transform:none}
}