/* roulang page: index */
:root{
  --ink-900:#0D0F0E;
  --ink-700:#2A2F2C;
  --ink-500:#5C6360;
  --ink-300:#9AA19D;
  --line:#E4E1DB;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-2:#F0EDE7;
  --brand:#FF4A1C;
  --brand-600:#E63A0F;
  --brand-50:#FFF1EA;
  --deep:#10362E;
  --deep-2:#0A241E;
  --lime:#CBFF52;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(13,15,14,.06);
  --sh-2:0 12px 28px -14px rgba(13,15,14,.20);
  --sh-3:0 28px 60px -30px rgba(16,54,46,.35);
  --sp-1:4px;
  --sp-2:8px;
  --sp-3:12px;
  --sp-4:16px;
  --sp-5:24px;
  --sp-6:32px;
  --sp-7:48px;
  --sp-8:64px;
  --gap-section:96px;
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--brand);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:var(--brand-50);color:var(--ink-900);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-5);
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:34px;height:34px;
  border-radius:10px;
  background:var(--ink-900);
  display:grid;place-items:center;
  position:relative;
  flex-shrink:0;
}
.logo-mark::before{
  content:"";
  width:12px;height:12px;
  border:2px solid var(--lime);
  border-radius:50%;
  border-right-color:transparent;
  border-bottom-color:transparent;
  transform:rotate(45deg);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-main{font-size:19px;font-weight:800;letter-spacing:.01em;}
.logo-sub{font-size:11px;color:var(--ink-500);letter-spacing:.22em;}
.nav{display:block;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:600;
  color:var(--ink-700);
  position:relative;
  transition:color .18s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s ease-out;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after,
.nav-link.is-current::after{transform:scaleX(1);}
.nav-link.is-current{color:var(--ink-900);}

/* Mega 面板 */
.mega{
  position:absolute;
  top:calc(100% + 10px);
  left:50%;
  width:640px;
  transform:translate(-50%,8px);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-2);
  padding:var(--sp-5);
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:var(--sp-5);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.has-mega:hover .mega,
.has-mega:focus-within .mega{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translate(-50%,0);
}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-2) var(--sp-5);}
.mega-link{
  display:flex;
  align-items:center;
  height:40px;
  padding-left:12px;
  font-size:14px;
  color:var(--ink-500);
  border-left:3px solid transparent;
  transition:color .18s ease-out,border-color .18s ease-out,background .18s ease-out;
}
.mega-link:hover{
  color:var(--ink-900);
  border-left-color:var(--brand);
  background:var(--surface-2);
}
.mega-card{
  background:var(--surface-2);
  border-radius:var(--r-m);
  padding:var(--sp-4);
  display:flex;
  flex-direction:column;
  gap:var(--sp-2);
}
.mega-card strong{font-size:15px;}
.mega-card p{font-size:13px;color:var(--ink-500);line-height:1.7;}
.mega-card .btn-text{margin-top:auto;font-size:13px;}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  background:var(--surface);
  font-size:14px;
  font-weight:600;
}
.nav-toggle:hover{border-color:var(--ink-300);}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--surface);
}
.drawer.is-open{display:block;}
.drawer-inner{padding:var(--sp-4) 24px var(--sp-5);}
.drawer-group{margin-bottom:var(--sp-4);}
.drawer-title{font-size:12px;letter-spacing:.18em;color:var(--ink-500);margin-bottom:var(--sp-2);}
.drawer-link{
  display:block;
  padding:11px 0;
  font-size:15px;
  font-weight:600;
  border-bottom:1px solid var(--line);
}
.drawer-link.is-current{color:var(--brand);}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:700;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.btn-ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-ghost:active{transform:scale(.985);}
.btn-light{background:#fff;color:var(--deep);}
.btn-light:hover{background:var(--lime);color:var(--deep-2);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:700;
  color:var(--brand);
}
.btn-text::after{content:"→";transition:transform .18s ease-out;}
.btn-text:hover::after{transform:translateX(4px);}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-full);
  font-size:12px;
  font-weight:600;
  line-height:1;
}
.badge-soft{background:var(--brand-50);color:var(--brand);}
.badge-live{background:rgba(203,255,82,.18);color:var(--lime);}
.badge-live::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--lime);
}
.badge-plain{background:var(--surface-2);color:var(--ink-700);}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:var(--sp-8) 0 var(--gap-section);
  background-color:var(--bg);
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:40px 40px;
  background-position:0 0;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(120% 80% at 20% 0%,rgba(247,245,241,.35) 0%,var(--bg) 72%);
  pointer-events:none;
}
.hero > .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:var(--sp-8);
  align-items:center;
}
.hero-tagline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-full);
  background:var(--surface);
  border:1px solid var(--line);
  font-size:13px;
  color:var(--ink-700);
  margin-bottom:var(--sp-5);
}
.hero-tagline i{
  width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;
}
h1{
  font-size:clamp(34px,5.2vw,68px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.1;
}
h1 .hl{color:var(--brand);}
.hero-sub{
  margin-top:var(--sp-5);
  font-size:17px;
  color:var(--ink-500);
  max-width:30em;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:var(--sp-3);
  margin-top:var(--sp-6);
}
.hero-trust{
  margin-top:var(--sp-5);
  font-size:13px;
  color:var(--ink-500);
  display:flex;
  align-items:center;
  gap:10px;
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px;}
.hero-trust span::before{
  content:"";
  width:5px;height:5px;border-radius:50%;background:var(--ink-300);
}
.hero-visual{
  position:relative;
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:16/11;
  background:var(--surface-2);
}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";
  position:absolute;inset:auto 0 0 0;
  height:46%;
  background:linear-gradient(to top,rgba(16,54,46,.72),rgba(16,54,46,0));
}
.hero-visual-caption{
  position:absolute;
  left:var(--sp-5);
  right:var(--sp-5);
  bottom:var(--sp-5);
  z-index:2;
  color:#fff;
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-4);
}
.hero-visual-caption strong{font-size:18px;display:block;}
.hero-visual-caption span{font-size:13px;color:rgba(255,255,255,.78);}

/* 状态条 */
.status-strip{
  margin-top:calc(var(--gap-section) * -0.5);
  position:relative;
  z-index:2;
}
.status-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.status-item{
  padding:var(--sp-5);
  border-right:1px solid var(--line);
}
.status-item:last-child{border-right:none;}
.status-item strong{
  display:block;
  font-size:26px;
  font-weight:800;
  letter-spacing:-.02em;
}
.status-item small{
  font-size:13px;
  color:var(--ink-500);
}

/* ============ 通用板块 ============ */
section{position:relative;}
.section{padding:var(--gap-section) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:var(--sp-5);
  margin-bottom:var(--sp-6);
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(26px,3vw,40px);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.2;
}
.section-head p{
  font-size:14px;
  color:var(--ink-500);
  max-width:34em;
  margin-top:10px;
}
.section-head .head-note{font-size:13px;color:var(--ink-500);}

/* ============ 优惠阶梯 ============ */
.tier-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:var(--sp-5);
  align-items:start;
}
.tier-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:var(--sp-5);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.tier-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:var(--ink-300);
}
.tier-card:nth-child(2){margin-top:24px;}
.tier-card:nth-child(3){margin-top:48px;}
.tier-card:nth-child(4){margin-top:72px;}
.tier-card h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.tier-card .tier-note{font-size:13px;color:var(--ink-500);}
.tier-points{margin:var(--sp-4) 0 var(--sp-5);display:flex;flex-direction:column;gap:10px;}
.tier-points li{
  font-size:14px;
  color:var(--ink-700);
  padding-left:16px;
  position:relative;
}
.tier-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:4px;height:4px;
  background:var(--brand);
}
.tier-card.is-top{
  background:linear-gradient(180deg,var(--deep),var(--deep-2));
  border-color:var(--lime);
  color:#fff;
  box-shadow:var(--sh-3);
}
.tier-card.is-top .tier-note,
.tier-card.is-top .tier-points li{color:rgba(255,255,255,.78);}
.tier-card.is-top .tier-points li::before{background:var(--lime);}
.tier-card.is-top h3{color:#fff;}

/* ============ 套餐对比 ============ */
.matrix-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-l);
  background:var(--surface);
  overflow:hidden;
}
.matrix-scroll{overflow-x:auto;}
.matrix{
  min-width:820px;
  display:grid;
  grid-template-columns:180px repeat(3,1fr) 1.12fr;
}
.matrix > div{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  font-size:14px;
  display:flex;
  align-items:center;
}
.matrix > div:nth-child(-n+5){border-bottom:1px solid var(--line);}
.matrix .m-label{color:var(--ink-700);font-weight:600;background:var(--surface);}
.matrix .m-head{
  font-weight:700;
  font-size:15px;
  background:var(--surface-2);
  color:var(--ink-900);
}
.matrix .m-alt{background:var(--surface-2);}
.matrix .m-rec{
  background:rgba(255,74,28,.06);
  border-left:2px solid var(--brand);
  border-right:2px solid var(--brand);
}
.matrix .m-rec-top{
  background:var(--brand);
  color:#fff;
  justify-content:center;
  font-weight:700;
  letter-spacing:.06em;
}
.matrix .m-rec-bottom{
  border-bottom:none;
  justify-content:center;
  background:rgba(255,74,28,.06);
  border-left:2px solid var(--brand);
  border-right:2px solid var(--brand);
}
.matrix .m-last{border-bottom:none;}
.matrix .check{color:var(--brand);font-weight:800;}
.matrix .dash{color:var(--ink-300);}
.m-cell-tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-full);
  background:var(--surface-2);
  font-size:12px;
  color:var(--ink-700);
}
.matrix .m-rec .m-cell-tag{background:#fff;color:var(--brand);}

/* ============ 限时入口 ============ */
.flash{
  border-radius:var(--r-l);
  background:linear-gradient(135deg,var(--deep),var(--deep-2));
  color:#fff;
  padding:var(--sp-7);
  display:grid;
  grid-template-columns:6fr 4fr;
  gap:var(--sp-7);
  align-items:center;
  box-shadow:var(--sh-3);
}
.flash h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.015em;}
.flash p{color:rgba(255,255,255,.75);font-size:15px;margin-top:10px;}
.countdown{
  display:flex;
  margin-top:var(--sp-5);
  border:1px solid rgba(255,255,255,.15);
  border-radius:var(--r-m);
  overflow:hidden;
}
.countdown div{
  flex:1;
  padding:14px 10px;
  text-align:center;
  border-right:1px solid rgba(255,255,255,.15);
}
.countdown div:last-child{border-right:none;}
.countdown b{
  display:block;
  font-size:clamp(28px,3.4vw,44px);
  font-weight:800;
  color:var(--lime);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.countdown small{font-size:12px;color:rgba(255,255,255,.65);}
.flash-side{
  border-left:1px solid rgba(255,255,255,.15);
  padding-left:var(--sp-7);
  display:flex;
  flex-direction:column;
  gap:var(--sp-3);
}
.flash-side strong{font-size:16px;}
.flash-side small{font-size:12px;color:rgba(255,255,255,.6);}

/* ============ 资讯列表（CMS） ============ */
.news-layout{
  display:grid;
  grid-template-columns:1.25fr 1fr;
  gap:var(--sp-5);
}
.news-big{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-big:hover,
.news-small:hover{
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  border-color:var(--ink-300);
}
.news-thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--bg);
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
.news-big:hover .news-thumb img,
.news-small:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:var(--sp-5);display:flex;flex-direction:column;gap:10px;flex:1;}
.news-body h3{font-size:20px;font-weight:700;line-height:1.4;}
.news-body p{font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--ink-500);
  margin-top:auto;
}
.news-side{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-5);
}
.news-small{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.news-small .news-thumb{aspect-ratio:16/10;}
.news-small .news-body{padding:var(--sp-4);gap:8px;}
.news-small h3{font-size:16px;font-weight:700;line-height:1.45;}
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-l);
  background:var(--surface);
  padding:var(--sp-8) var(--sp-5);
  text-align:center;
  color:var(--ink-500);
}
.empty-state svg{width:44px;height:44px;stroke:var(--ink-300);fill:none;stroke-width:1.5;margin:0 auto var(--sp-3);}
.empty-state p{font-size:14px;margin-bottom:var(--sp-3);}

/* ============ 列表行 ============ */
.rows{border-top:1px solid var(--line);}
.row{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:var(--sp-4);
  align-items:center;
  padding:var(--sp-4) var(--sp-3);
  border-bottom:1px solid var(--line);
  transition:background .18s ease-out;
}
.row:hover{background:var(--surface-2);}
.row:hover h3{color:var(--brand);}
.row-index{
  font-size:20px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
}
.row h3{font-size:16px;font-weight:700;transition:color .18s ease-out;}
.row p{font-size:13px;color:var(--ink-500);}
.row-meta{font-size:13px;color:var(--ink-500);white-space:nowrap;}

/* ============ 信任 / 评价 ============ */
.trust-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:var(--sp-5);
}
.quote{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:var(--sp-5);
  display:flex;
  flex-direction:column;
  gap:var(--sp-4);
}
.quote:first-child{grid-row:span 1;}
.quote blockquote{font-size:15px;color:var(--ink-700);line-height:1.85;}
.quote footer{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--ink-500);
}
.avatar{
  width:38px;height:38px;
  border-radius:50%;
  background:var(--surface-2);
  display:grid;place-items:center;
  font-size:14px;
  font-weight:700;
  color:var(--ink-700);
}
.quote.muted{background:var(--surface-2);}

/* ============ FAQ ============ */
.faq{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px var(--sp-5);
  font-size:17px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  border:1px solid var(--line);
  border-radius:6px;
  position:relative;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-500);
  transition:opacity .18s ease-out,transform .18s ease-out;
}
.faq-icon::before{left:5px;right:5px;top:10px;height:1.5px;}
.faq-icon::after{top:5px;bottom:5px;left:10px;width:1.5px;}
.faq-item[open] .faq-icon{background:var(--brand-50);border-color:var(--brand);}
.faq-item[open] .faq-icon::before{background:var(--brand);}
.faq-item[open] .faq-icon::after{opacity:0;transform:scaleY(.2);}
.faq-answer{
  padding:0 var(--sp-5) 22px;
  font-size:15px;
  color:var(--ink-500);
  line-height:1.8;
  max-width:60em;
}

/* ============ CTA / 表单 ============ */
.cta-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:var(--sp-7);
  align-items:start;
}
.cta-copy h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.015em;}
.cta-copy p{font-size:15px;color:var(--ink-500);margin-top:12px;}
.cta-points{margin-top:var(--sp-5);display:flex;flex-direction:column;gap:12px;}
.cta-points li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--ink-700);
}
.cta-points li::before{
  content:"";
  flex-shrink:0;
  width:16px;height:16px;
  margin-top:3px;
  border-radius:4px;
  border:1px solid var(--brand);
  background:var(--brand-50);
  background-image:linear-gradient(45deg,transparent 46%,var(--brand) 46%,var(--brand) 54%,transparent 54%),
                   linear-gradient(-45deg,transparent 46%,var(--brand) 46%,var(--brand) 54%,transparent 54%);
  background-size:9px 9px;
  background-position:center;
  background-repeat:no-repeat;
}
.form-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-2);
  padding:var(--sp-6);
}
.form-seal{
  position:absolute;
  top:var(--sp-5);
  right:var(--sp-5);
  width:52px;height:52px;
  border:1px solid var(--brand);
  border-radius:4px;
  display:grid;place-items:center;
  font-size:12px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
  text-align:center;
  letter-spacing:.06em;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-4);}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:var(--sp-4);}
.field label{font-size:13px;color:var(--ink-700);font-weight:600;}
.field input,
.field select,
.field textarea{
  height:48px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  background:var(--surface);
  font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235C6360' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:38px;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-50);
}
.form-note{font-size:12px;color:var(--ink-500);margin-top:var(--sp-3);}
.form-success{
  display:none;
  margin-top:var(--sp-4);
  padding:12px 16px;
  border-radius:var(--r-s);
  background:#EDF7EC;
  color:#26643A;
  font-size:14px;
}
.form-success.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:linear-gradient(180deg,var(--deep),var(--deep-2));
  color:#fff;
  margin-top:var(--gap-section);
  padding:var(--sp-8) 0 var(--sp-5);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:var(--sp-6);
}
.footer-brand .logo-main{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.5);}
.footer-brand .logo-mark{background:#fff;}
.footer-brand .logo-mark::before{border-color:var(--deep);border-right-color:transparent;border-bottom-color:transparent;}
.footer-brand p{
  margin-top:var(--sp-4);
  font-size:14px;
  color:rgba(255,255,255,.68);
  max-width:24em;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.16em;
  color:rgba(255,255,255,.5);
  font-weight:600;
  margin-bottom:var(--sp-4);
}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.82);transition:color .18s ease-out;}
.footer-col a:hover{color:var(--lime);}
.footer-contact li{
  font-size:14px;
  color:rgba(255,255,255,.82);
  margin-bottom:10px;
}
.footer-contact span{color:rgba(255,255,255,.5);display:block;font-size:12px;}
.footer-bottom{
  margin-top:var(--sp-7);
  padding-top:var(--sp-5);
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:var(--sp-4);
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.75);}
.footer-bottom a:hover{color:var(--lime);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .hero-grid{gap:var(--sp-7);}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:var(--sp-6);}
  .footer-contact{grid-column:span 3;}
}
@media (max-width:1023px){
  :root{--gap-section:72px;}
  .nav,
  .nav-inner > .nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero{padding-top:var(--sp-7);}
  .hero-grid{grid-template-columns:1fr;}
  .hero-visual{aspect-ratio:16/9;}
  .status-strip{margin-top:var(--sp-7);}
  .status-bar{grid-template-columns:1fr 1fr;}
  .status-item:nth-child(2){border-right:none;}
  .status-item:nth-child(1),
  .status-item:nth-child(2){border-bottom:1px solid var(--line);}
  .tier-grid{grid-template-columns:1fr 1fr;}
  .tier-card:nth-child(3){margin-top:0;}
  .tier-card:nth-child(4){margin-top:24px;}
  .flash{grid-template-columns:1fr;gap:var(--sp-6);padding:var(--sp-6);}
  .flash-side{border-left:none;border-top:1px solid rgba(255,255,255,.15);padding-left:0;padding-top:var(--sp-5);}
  .news-layout{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  :root{--gap-section:48px;}
  .container{padding:0 16px;}
  h1{font-size:clamp(30px,8vw,42px);}
  .section-head{flex-direction:column;align-items:flex-start;}
  .status-bar{grid-template-columns:1fr;}
  .status-item{border-right:none;border-bottom:1px solid var(--line);}
  .status-item:last-child{border-bottom:none;}
  .tier-grid{grid-template-columns:1fr;gap:var(--sp-4);}
  .tier-card{margin-top:0 !important;position:relative;padding-left:var(--sp-6);}
  .tier-card::before{
    content:"";
    position:absolute;
    left:14px;top:34px;bottom:-16px;
    width:2px;
    background:var(--line);
  }
  .tier-card:last-child::before{display:none;}
  .tier-card::after{
    content:"";
    position:absolute;
    left:9px;top:26px;
    width:12px;height:12px;
    border-radius:50%;
    background:var(--brand);
    box-shadow:0 0 0 4px var(--bg);
  }
  .tier-card.is-top::after{background:var(--lime);}
  .news-side{grid-template-columns:1fr;}
  .row{grid-template-columns:44px 1fr;row-gap:6px;}
  .row-meta{grid-column:2;}
  .hero-actions .btn{width:100%;}
  .form-row{grid-template-columns:1fr;}
  .form-card{padding:var(--sp-5);}
  .footer-grid{grid-template-columns:1fr;}
  .footer-contact{grid-column:auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  body{font-size:15px;}
  .logo-main{font-size:17px;}
  .tier-card,
  .news-body,
  .quote,
  .form-card{padding:16px;}
  .faq-item summary{padding:16px;font-size:16px;}
  .faq-answer{padding:0 16px 18px;}
}

/* roulang page: article */
:root{
  --ink-900:#0D0F0E;
  --ink-700:#2A2F2C;
  --ink-500:#5C6360;
  --ink-300:#9AA19D;
  --line:#E4E1DB;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-2:#F0EDE7;
  --brand:#FF4A1C;
  --brand-600:#E63A0F;
  --brand-50:#FFF1EA;
  --deep:#10362E;
  --deep-2:#0A241E;
  --lime:#CBFF52;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(13,15,14,.06);
  --sh-2:0 12px 28px -14px rgba(13,15,14,.20);
  --sh-3:0 28px 60px -30px rgba(16,54,46,.35);
  --c-max:1240px;
  --header-h:76px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--c-max);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:8px;font-weight:800;letter-spacing:-.02em;flex:0 0 auto}
.logo-main{font-size:22px;line-height:1.2;color:var(--ink-900)}
.logo-sub{
  font-size:12px;font-weight:600;line-height:1.4;color:var(--brand);
  border:1px solid rgba(255,74,28,.45);background:var(--brand-50);
  border-radius:var(--r-full);padding:2px 9px;white-space:nowrap;
}
.nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  position:relative;display:inline-block;padding:12px 14px;
  font-size:15px;font-weight:600;color:var(--ink-700);border-radius:var(--r-s);
  transition:color .18s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .16s ease-out;
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after,.nav-link.is-current::after{transform:scaleX(1)}
.nav-link.is-current{color:var(--ink-900)}
.mega{
  position:absolute;top:calc(100% + 12px);left:50%;
  width:640px;padding:20px;display:grid;grid-template-columns:1.85fr 1fr;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;pointer-events:none;
  transform:translate(-50%,8px);
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:2px 12px;align-content:start}
.mega-link{
  position:relative;display:block;padding:9px 12px 9px 18px;font-size:14px;
  color:var(--ink-500);border-radius:var(--r-s);line-height:1.5;
  transition:color .18s ease-out,background .18s ease-out;
}
.mega-link::before{
  content:"";position:absolute;left:5px;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--brand);border-radius:2px;
  transition:height .18s ease-out;
}
.mega-link:hover{color:var(--ink-900);background:var(--surface-2)}
.mega-link:hover::before{height:16px}
.mega-card{
  background:var(--surface-2);border-radius:var(--r-m);padding:18px;
  display:flex;flex-direction:column;gap:8px;
}
.mega-card strong{font-size:15px;color:var(--ink-900)}
.mega-card p{font-size:13px;color:var(--ink-500);line-height:1.7}
.nav-toggle{
  display:none;width:46px;height:46px;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-s);
  cursor:pointer;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-toggle:hover{border-color:var(--ink-300);box-shadow:var(--sh-1)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-s);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#fff}
.btn-light{background:#fff;color:var(--deep)}
.btn-light:hover{background:var(--lime);color:var(--deep);transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;
  color:var(--ink-900);transition:color .18s ease-out;
}
.btn-text .arrow{transition:transform .18s ease-out;color:var(--brand)}
.btn-text:hover{color:var(--brand)}
.btn-text:hover .arrow{transform:translateX(4px)}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-full);font-size:12px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-50);color:var(--brand)}
.badge-live{background:rgba(203,255,82,.16);color:var(--lime);border:1px solid rgba(203,255,82,.4)}
.badge-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--lime)}
.badge-plain{background:var(--surface-2);color:var(--ink-700)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  padding:40px 0 48px;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(228,225,219,.7) 1px,transparent 1px),
    linear-gradient(90deg,rgba(228,225,219,.7) 1px,transparent 1px);
  background-size:48px 48px;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-500);margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-500);transition:color .18s ease-out;display:inline-flex;align-items:center;gap:6px}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--ink-300)}
.breadcrumb .current{color:var(--ink-900);font-weight:700;max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:900px}
.article-title{
  font-size:clamp(28px,3.4vw,40px);line-height:1.3;font-weight:800;
  letter-spacing:-.02em;color:var(--ink-900);margin:18px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-500);
}
.article-meta .dot{color:var(--ink-300)}
.article-meta .strong{color:var(--ink-700);font-weight:600}

/* ---------- 正文 ---------- */
.article-section{padding:56px 0 8px}
.article-body{
  max-width:760px;margin:0 auto;font-size:17px;line-height:1.95;color:var(--ink-700);
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 24px}
.article-body h2{
  font-size:28px;line-height:1.35;font-weight:700;letter-spacing:-.015em;
  color:var(--ink-900);margin:48px 0 16px;
}
.article-body h3{
  font-size:22px;line-height:1.4;font-weight:700;color:var(--ink-900);margin:36px 0 14px;
}
.article-body strong{color:var(--ink-900)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(255,74,28,.35);transition:border-color .18s ease-out}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body img{border-radius:var(--r-m);margin:28px auto;box-shadow:var(--sh-1)}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;background:var(--surface-2);
  border-left:3px solid var(--brand);border-radius:0 var(--r-m) var(--r-m) 0;
  color:var(--ink-700);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body ul li::marker{color:var(--brand)}
.article-body ol li::marker{color:var(--brand);font-weight:700}
.article-body table{
  width:100%;border-collapse:collapse;margin:28px 0;font-size:15px;line-height:1.7;
  background:var(--surface);
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--surface-2);color:var(--ink-900);font-weight:700}
.article-author{
  max-width:760px;margin:40px auto 0;padding:18px 22px;
  display:flex;align-items:center;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  font-size:14px;color:var(--ink-500);
}
.article-author .avatar{
  width:38px;height:38px;flex:0 0 auto;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--deep);color:#fff;font-size:15px;font-weight:700;
}
.back-row{
  max-width:760px;margin:32px auto 0;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:560px;margin:0 auto;padding:64px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
}
.empty-state svg{width:56px;height:56px;margin:0 auto 18px;color:var(--ink-300)}
.empty-state p{font-size:16px;color:var(--ink-500);margin-bottom:22px}

/* ---------- 相关阅读 ---------- */
.related{padding:72px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:28px;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.015em;color:var(--ink-900)}
.section-head .note{font-size:13px;color:var(--ink-500);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--ink-300)}
.card-media{
  position:relative;aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-media .tag{
  position:absolute;left:12px;top:12px;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;font-weight:700;line-height:1.5;color:var(--ink-900);transition:color .18s ease-out}
.card:hover .card-title{color:var(--brand)}
.card-desc{font-size:14px;color:var(--ink-500);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500)}

/* ---------- 返回升级条 ---------- */
.upgrade{
  margin-top:72px;
  border-radius:var(--r-l);
  background:linear-gradient(135deg,var(--deep),var(--deep-2));
  color:#fff;padding:36px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.upgrade h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;letter-spacing:-.015em}
.upgrade p{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;max-width:52ch}
.upgrade .actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;padding:64px 0 28px;color:#fff;
  background:linear-gradient(180deg,var(--deep),var(--deep-2));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-main{color:#fff;font-size:21px}
.footer-brand .logo-sub{background:rgba(203,255,82,.12);border-color:rgba(203,255,82,.35);color:var(--lime)}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.7);margin-top:16px;max-width:34ch;line-height:1.8}
.footer-copy{font-size:13px;color:rgba(255,255,255,.5);margin-top:18px}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.04em;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(255,255,255,.68);transition:color .18s ease-out}
.footer-col a:hover{color:var(--lime)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .mega{width:560px;grid-template-columns:1.6fr 1fr}
}
@media (max-width:1023px){
  :root{--header-h:68px}
  .container{padding:0 24px}
  .nav{
    position:fixed;left:0;right:0;top:var(--header-h);bottom:0;margin:0;
    background:var(--bg);border-top:1px solid var(--line);
    padding:16px 24px 48px;overflow-y:auto;display:none;
  }
  .nav.is-open{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{
    display:block;padding:16px 4px;font-size:17px;border-radius:0;
    border-bottom:1px solid var(--line);
  }
  .nav-link::after{left:4px;right:auto;width:26px;bottom:10px}
  .mega{
    position:static;width:auto;transform:none;opacity:1;visibility:visible;pointer-events:auto;
    display:grid;grid-template-columns:1fr;gap:14px;
    padding:14px 0 6px;border:0;border-radius:0;box-shadow:none;background:transparent;
  }
  .nav-toggle{display:inline-flex}
  .related-grid{grid-template-columns:1fr 1fr}
  .upgrade{padding:28px 24px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-hero{padding:26px 0 34px;background-size:36px 36px}
  .article-section{padding:40px 0 0}
  .article-body{font-size:17px;line-height:1.9}
  .article-body h2{font-size:23px;margin-top:38px}
  .article-body h3{font-size:19px;margin-top:28px}
  .related{padding-top:56px}
  .related-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .upgrade{flex-direction:column;align-items:flex-start}
  .upgrade .actions{width:100%}
  .upgrade .actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:64px;padding:48px 0 24px}
}
@media (max-width:520px){
  .article-title{font-size:26px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .article-author{padding:16px}
  .back-row{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
    --ink-900:#0D0F0E;
    --ink-700:#2A2F2C;
    --ink-500:#5C6360;
    --ink-300:#9AA19D;
    --line:#E4E1DB;
    --bg:#F7F5F1;
    --surface:#FFFFFF;
    --surface-2:#F0EDE7;
    --brand:#FF4A1C;
    --brand-600:#E63A0F;
    --brand-50:#FFF1EA;
    --deep:#10362E;
    --deep-2:#0A241E;
    --lime:#CBFF52;
    --r-s:8px;
    --r-m:12px;
    --r-l:18px;
    --r-full:999px;
    --sh-1:0 1px 2px rgba(13,15,14,.06);
    --sh-2:0 12px 28px -14px rgba(13,15,14,.20);
    --sh-3:0 28px 60px -30px rgba(16,54,46,.35);
    --container:1240px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--ink-900);
    background:var(--bg);
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,p{margin:0;}
  strong{font-weight:700;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
  .section{padding:56px 0;}
  .section-tight{padding:32px 0;}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,245,241,.94);
    -webkit-backdrop-filter:saturate(150%) blur(6px);
    backdrop-filter:saturate(150%) blur(6px);
    border-bottom:1px solid transparent;
    transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
  .header-inner{display:flex;align-items:center;gap:24px;min-height:72px;}
  .brand{display:flex;align-items:baseline;gap:6px;font-weight:800;letter-spacing:-.02em;flex:none;}
  .brand-mark{font-size:20px;color:var(--ink-900);}
  .brand-sub{font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-50);padding:2px 8px;border-radius:var(--r-full);letter-spacing:.02em;}
  .nav{margin-left:auto;}
  .nav-list{display:flex;align-items:center;gap:2px;}
  .nav-item{position:relative;}
  .nav-link{
    position:relative;display:inline-block;padding:24px 14px;
    font-size:15px;font-weight:600;color:var(--ink-700);
    transition:color .18s ease-out;
  }
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .16s ease-out;
  }
  .nav-link:hover{color:var(--ink-900);}
  .nav-link:hover::after,
  .nav-link.is-current::after{transform:scaleX(1);}
  .nav-link.is-current{color:var(--ink-900);}

  .mega{
    position:absolute;top:100%;left:50%;
    transform:translate(-50%,8px);
    width:640px;padding:20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-l);
    box-shadow:var(--sh-2);
    display:grid;grid-template-columns:1.9fr 1fr;gap:20px;
    opacity:0;visibility:hidden;
    transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s ease-out;
  }
  .nav-item.has-mega:hover .mega,
  .nav-item.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0);}
  .mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:2px 12px;align-content:start;}
  .mega-link{
    display:block;padding:8px 10px;font-size:14px;font-weight:500;
    color:var(--ink-500);border-left:3px solid transparent;border-radius:6px;
    transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;
  }
  .mega-link:hover{color:var(--ink-900);border-left-color:var(--brand);background:var(--surface-2);}
  .mega-card{
    background:var(--surface-2);border-radius:var(--r-m);padding:16px;
    display:flex;flex-direction:column;gap:8px;
  }
  .mega-card strong{font-size:15px;color:var(--ink-900);}
  .mega-card p{font-size:13px;color:var(--ink-500);line-height:1.7;}
  .nav-toggle{
    display:none;align-items:center;justify-content:center;
    width:44px;height:44px;margin-left:auto;
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-s);
    cursor:pointer;transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .nav-toggle:hover{border-color:var(--ink-300);box-shadow:var(--sh-1);}
  .nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
  .nav-toggle span::before,
  .nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}

  /* ---------- buttons / badges ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:var(--r-s);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background-color .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .btn-primary{background:var(--brand);color:#fff;}
  .btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-primary:active{transform:translateY(0) scale(.985);}
  .btn-ghost{border-color:var(--ink-900);color:var(--ink-900);background:transparent;}
  .btn-ghost:hover{background:var(--ink-900);color:#fff;}
  .btn-light{background:#fff;color:var(--deep);}
  .btn-light:hover{background:var(--lime);transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-text{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);}
  .btn-text .arrow{display:inline-block;transition:transform .18s ease-out;}
  .btn-text:hover{color:var(--brand-600);}
  .btn-text:hover .arrow{transform:translateX(4px);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
    border-radius:var(--r-full);font-size:12px;font-weight:600;
    background:var(--brand-50);color:var(--brand);
  }
  .badge-lime{background:rgba(203,255,82,.14);color:var(--lime);}
  .badge-light{background:#fff;color:var(--deep);border:1px solid var(--line);}
  .dot{width:6px;height:6px;border-radius:var(--r-full);background:var(--lime);display:inline-block;}

  /* ---------- hero ---------- */
  .page-hero{
    position:relative;
    padding:56px 0 64px;
    background-image:
      linear-gradient(rgba(228,225,219,.6) 1px,transparent 1px),
      linear-gradient(90deg,rgba(228,225,219,.6) 1px,transparent 1px);
    background-size:64px 64px;
    background-position:center top;
  }
  .hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;}
  .hero-copy .badge{margin-bottom:18px;}
  .hero-copy h1{
    font-size:clamp(32px,4.4vw,56px);
    font-weight:800;letter-spacing:-.02em;line-height:1.14;
  }
  .hero-copy .lead{
    margin-top:18px;font-size:17px;color:var(--ink-500);max-width:520px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-stats{
    display:flex;flex-wrap:wrap;gap:40px;margin-top:34px;padding-top:24px;
    border-top:1px solid var(--line);
  }
  .stat-num{font-size:28px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.2;}
  .stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--ink-500);margin-left:2px;}
  .stat-label{font-size:13px;color:var(--ink-500);}
  .hero-media{
    position:relative;border-radius:var(--r-l);overflow:hidden;
    border:1px solid var(--line);background:var(--surface-2);aspect-ratio:16/11;
  }
  .hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
  .hero-media:hover img{transform:scale(1.03);}
  .hero-media::after{
    content:"";position:absolute;inset:auto 0 0 0;height:46%;
    background:linear-gradient(180deg,rgba(16,54,46,0) 0%,rgba(16,54,46,.5) 100%);
  }
  .hero-media .media-cap{
    position:absolute;left:20px;right:20px;bottom:18px;z-index:2;color:#fff;
    font-size:13px;letter-spacing:.02em;
  }

  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);padding-top:20px;}
  .crumb a{color:var(--ink-500);transition:color .18s ease-out;}
  .crumb a:hover{color:var(--brand);}
  .crumb .sep{color:var(--ink-300);}
  .crumb .current{color:var(--ink-900);font-weight:700;}

  /* ---------- today panel ---------- */
  .today-panel{
    background:linear-gradient(160deg,var(--deep) 0%,var(--deep-2) 100%);
    border-radius:var(--r-l);padding:40px;color:#fff;
    display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;
    box-shadow:var(--sh-3);
  }
  .today-head h2{
    font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.015em;line-height:1.25;
    margin-top:16px;
  }
  .today-note{margin-top:12px;font-size:14px;color:rgba(255,255,255,.66);max-width:320px;}
  .today-list{border-top:1px solid rgba(255,255,255,.15);}
  .today-item{
    display:grid;grid-template-columns:88px 1fr auto;gap:16px;align-items:center;
    padding:16px 4px;border-bottom:1px solid rgba(255,255,255,.15);
    transition:background-color .18s ease-out,padding-left .18s ease-out;
  }
  .today-item:hover{background:rgba(255,255,255,.06);padding-left:10px;}
  .today-time{font-size:18px;font-weight:700;color:var(--lime);font-variant-numeric:tabular-nums;}
  .today-title{font-size:15px;color:rgba(255,255,255,.92);}
  .today-tag{
    font-size:12px;color:rgba(255,255,255,.7);
    border:1px solid rgba(255,255,255,.22);border-radius:var(--r-full);padding:2px 10px;white-space:nowrap;
  }

  /* ---------- alternating rows ---------- */
  .alt-rows{display:flex;flex-direction:column;gap:64px;}
  .alt-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
  .alt-media{
    position:relative;border-radius:var(--r-l);overflow:hidden;
    border:1px solid var(--line);background:var(--bg);aspect-ratio:16/10;
  }
  .alt-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
  .alt-media:hover img{transform:scale(1.03);}
  .alt-row--flip .alt-media{order:2;}
  .row-index{
    display:inline-block;font-size:13px;font-weight:700;color:var(--brand);
    font-variant-numeric:tabular-nums;letter-spacing:.08em;margin-bottom:12px;
  }
  .alt-body h3{font-size:22px;font-weight:700;line-height:1.35;letter-spacing:-.01em;}
  .alt-body p{margin-top:14px;font-size:15px;color:var(--ink-500);line-height:1.8;}
  .points{display:flex;flex-direction:column;gap:10px;margin:22px 0 24px;}
  .points li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-700);}
  .points li::before{
    content:"";position:absolute;left:0;top:.68em;width:6px;height:6px;
    background:var(--brand);border-radius:2px;
  }
  .alt-body .btn-text{margin-top:4px;}

  /* ---------- cta band ---------- */
  .cta-band{
    background:linear-gradient(160deg,var(--deep) 0%,var(--deep-2) 100%);
    border-radius:var(--r-l);padding:44px 48px;color:#fff;
    display:grid;grid-template-columns:1.4fr auto;gap:32px;align-items:center;
  }
  .cta-band h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.015em;line-height:1.25;}
  .cta-band p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:560px;}
  .cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
  .cta-side .hint{font-size:12px;color:rgba(255,255,255,.6);}

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:88px;padding:64px 0 28px;color:#fff;
    background:linear-gradient(180deg,var(--deep) 0%,var(--deep-2) 100%);
  }
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:32px;}
  .footer-brand .brand-mark{color:#fff;}
  .footer-brand .brand-sub{background:rgba(203,255,82,.16);color:var(--lime);}
  .footer-desc{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);max-width:280px;}
  .footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;}
  .footer-list{display:flex;flex-direction:column;gap:10px;}
  .footer-list a,.footer-list span{font-size:14px;color:rgba(255,255,255,.72);}
  .footer-list a{transition:color .18s ease-out;}
  .footer-list a:hover{color:var(--lime);}
  .footer-editor{display:flex;align-items:center;gap:10px;margin-top:18px;}
  .avatar{
    width:32px;height:32px;border-radius:var(--r-full);flex:none;
    background:var(--lime);color:var(--deep);
    display:inline-flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;
  }
  .editor-name{font-size:13px;color:rgba(255,255,255,.72);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    margin-top:40px;padding-top:20px;
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:13px;color:rgba(255,255,255,.6);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1199px){
    .mega{width:560px;}
  }
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-toggle{display:inline-flex;}
    .nav{
      display:none;position:absolute;left:0;right:0;top:100%;
      margin-left:0;padding:12px 24px 24px;
      background:var(--surface);border-bottom:1px solid var(--line);
      box-shadow:var(--sh-2);max-height:calc(100vh - 72px);overflow:auto;
    }
    .nav.is-open{display:block;}
    .nav-list{flex-direction:column;align-items:stretch;gap:0;}
    .nav-link{display:block;padding:14px 4px;font-size:16px;}
    .nav-link::after{left:4px;right:auto;width:34px;bottom:8px;}
    .mega{
      position:static;transform:none;opacity:1;visibility:visible;
      width:100%;grid-template-columns:1fr;gap:14px;
      padding:8px 0 16px;border:0;border-top:1px solid var(--line);
      border-radius:0;box-shadow:none;background:transparent;
    }
    .mega-cols{grid-template-columns:1fr 1fr;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .hero-media{aspect-ratio:16/9;}
    .today-panel{grid-template-columns:1fr;gap:28px;padding:32px;}
    .cta-band{grid-template-columns:1fr;gap:24px;padding:36px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  }
  @media (max-width:767px){
    .section{padding:40px 0;}
    .page-hero{padding:36px 0 44px;background-size:48px 48px;}
    .alt-row{grid-template-columns:1fr;gap:24px;}
    .alt-row--flip .alt-media{order:0;}
    .alt-rows{gap:48px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .hero-stats{gap:24px;}
    .today-item{grid-template-columns:74px 1fr;row-gap:6px;}
    .today-tag{grid-column:2;justify-self:start;}
    .cta-side{align-items:stretch;}
    .cta-side .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
  }
  @media (max-width:519px){
    .container{padding:0 16px;}
    body{font-size:15px;}
    .hero-copy h1{font-size:clamp(26px,7.6vw,34px);}
    .alt-body h3{font-size:19px;}
    .stat-num{font-size:24px;}
    .mega-cols{grid-template-columns:1fr;}
    .today-panel{padding:24px 20px;border-radius:var(--r-m);}
    .cta-band{padding:28px 20px;border-radius:var(--r-m);}
  }

/* roulang page: category2 */
:root{
  --ink-900:#0D0F0E;
  --ink-700:#2A2F2C;
  --ink-500:#5C6360;
  --ink-300:#9AA19D;
  --line:#E4E1DB;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-2:#F0EDE7;
  --brand:#FF4A1C;
  --brand-600:#E63A0F;
  --brand-50:#FFF1EA;
  --deep:#10362E;
  --deep-2:#0A241E;
  --lime:#CBFF52;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(13,15,14,.06);
  --sh-2:0 12px 28px -14px rgba(13,15,14,.20);
  --sh-3:0 28px 60px -30px rgba(16,54,46,.35);
  --t:200ms ease-out;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-900);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding-block:96px;}
.section--tight{padding-block:72px;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(120%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t);
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:32px;min-height:72px;}
.brand{display:flex;align-items:baseline;gap:6px;flex:0 0 auto;}
.brand-mark{
  font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--ink-900);
}
.brand-mark::after{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--brand);margin-left:6px;transform:translateY(-2px);}
.brand-sub{
  font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--ink-500);
  padding:2px 7px;border:1px solid var(--line);border-radius:var(--r-full);background:var(--surface);
}
.nav{margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:4px;}
.nav-item{position:relative;}
.nav-link{
  position:relative;display:block;padding:10px 14px;border-radius:var(--r-s);
  font-size:15px;font-weight:600;color:var(--ink-700);white-space:nowrap;
  transition:color var(--t),background-color var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left center;
  transition:transform 160ms ease-out;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-current{color:var(--ink-900);}
.nav-link.is-current::after{transform:scaleX(1);}

/* Mega 面板 */
.mega{
  position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%,8px);
  width:640px;padding:20px;display:grid;grid-template-columns:2fr 1fr;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity 180ms ease-out,transform 180ms ease-out,visibility 180ms;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
.mega-cols{display:grid;grid-template-columns:1fr 1fr;gap:2px 12px;align-content:start;}
.mega-link{
  position:relative;display:flex;align-items:center;height:40px;padding-left:12px;
  font-size:14px;color:var(--ink-500);border-radius:var(--r-s);
  transition:color var(--t),background-color var(--t),padding-left var(--t);
}
.mega-link::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;
  background:var(--brand);transform:scaleY(0);transition:transform 180ms ease-out;
}
.mega-link:hover{color:var(--ink-900);background:var(--surface-2);padding-left:16px;}
.mega-link:hover::before{transform:scaleY(1);}
.mega-card{
  background:var(--surface-2);border-radius:var(--r-m);padding:16px;display:flex;flex-direction:column;gap:8px;
}
.mega-card strong{font-size:14px;font-weight:700;color:var(--ink-900);}
.mega-card p{font-size:13px;line-height:1.7;color:var(--ink-500);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand);
}
.btn-text::after{content:"→";transition:transform 180ms ease-out;}
.btn-text:hover::after{transform:translateX(4px);}

/* 移动端抽屉 */
.nav-toggle-input{display:none;}
.nav-burger{display:none;width:44px;height:40px;margin-left:auto;flex-direction:column;justify-content:center;gap:5px;padding:0 10px;border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface);}
.nav-burger span{display:block;height:2px;border-radius:2px;background:var(--ink-700);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-s);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:background-color var(--t),color var(--t),transform var(--t),box-shadow var(--t),border-color var(--t);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.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(--deep);}
.btn-light:hover{background:var(--lime);color:var(--deep);transform:translateY(-1px);}
.btn-outline-lime{border:1px solid var(--lime);color:var(--lime);background:transparent;}
.btn-outline-lime:hover{background:var(--lime);color:var(--deep);}
.btn-block{width:100%;}

:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

/* ===== 标签 / 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
  border-radius:var(--r-full);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-brand{background:var(--brand-50);color:var(--brand);}
.badge-line{border:1px solid var(--line);color:var(--ink-500);background:var(--surface);}
.badge-dark{background:var(--deep);color:#fff;}
.dot-lime{width:6px;height:6px;border-radius:50%;background:var(--lime);display:inline-block;}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);}
.breadcrumb a{color:var(--ink-500);transition:color var(--t);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{color:var(--ink-900);font-weight:700;}

/* ===== Hero ===== */
.hero{
  padding-top:56px;padding-bottom:72px;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(13,15,14,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(13,15,14,.045) 1px,transparent 1px);
  background-size:64px 64px;
  background-position:center top;
  border-bottom:1px solid var(--line);
}
.hero-head{max-width:820px;display:flex;flex-direction:column;gap:20px;}
.hero h1{
  font-size:clamp(32px,4.4vw,58px);
  line-height:1.12;font-weight:800;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;color:var(--ink-500);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:4px;}
.hero-meta{font-size:13px;color:var(--ink-500);display:flex;flex-wrap:wrap;gap:16px;}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);}

.statbar{
  margin-top:56px;display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
}
.statbar .stat{
  padding:24px 26px;border-right:1px solid var(--line);
}
.statbar .stat:last-child{border-right:none;}
.stat .stat-num{font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.1;color:var(--ink-900);}
.stat .stat-num small{font-size:16px;font-weight:700;margin-left:2px;color:var(--brand);}
.stat .stat-label{margin-top:6px;font-size:13px;color:var(--ink-500);}

/* ===== 宽幅图 ===== */
.wide-figure{
  position:relative;border-radius:var(--r-l);overflow:hidden;
  aspect-ratio:16/7;background:var(--surface-2);
}
.wide-figure img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out;}
.wide-figure:hover img{transform:scale(1.03);}
.wide-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:28px 32px;
  background:linear-gradient(to top,rgba(16,54,46,.86),rgba(16,54,46,0));
  color:#fff;
}
.wide-figure figcaption strong{display:block;font-size:22px;font-weight:800;letter-spacing:-.01em;}
.wide-figure figcaption span{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.78);}

/* ===== 板块标题 ===== */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,3vw,40px);font-weight:700;letter-spacing:-.015em;line-height:1.2;}
.section-head p{font-size:14px;color:var(--ink-500);max-width:520px;}

/* ===== 杂志式不规则网格 ===== */
.mag-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.mag-card{
  grid-column:span 3;
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.mag-card--big{grid-column:span 6;flex-direction:row;}
.mag-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--ink-300);}
.mag-thumb{position:relative;overflow:hidden;background:var(--surface-2);aspect-ratio:16/10;}
.mag-card--big .mag-thumb{flex:0 0 52%;aspect-ratio:auto;min-height:280px;}
.mag-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms ease-out;}
.mag-card:hover .mag-thumb img{transform:scale(1.03);}
.mag-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.mag-body h3{font-size:19px;font-weight:700;line-height:1.4;letter-spacing:-.01em;}
.mag-card--big .mag-body h3{font-size:23px;}
.mag-body p{font-size:14px;color:var(--ink-500);line-height:1.7;}
.mag-foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-300);}

/* ===== 步骤条 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;display:flex;flex-direction:column;gap:10px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--ink-300);}
.step .step-no{font-size:30px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1;}
.step h3{font-size:17px;font-weight:700;}
.step p{font-size:14px;color:var(--ink-500);line-height:1.7;}

/* ===== FAQ ===== */
.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color var(--t),background-color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";margin-left:auto;font-size:20px;font-weight:600;color:var(--ink-300);
  transition:color var(--t),transform var(--t);
}
.faq-item[open] summary::after{content:"−";color:var(--brand);}
.faq-item summary:hover{color:var(--brand);background:var(--surface-2);}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-500);}

/* ===== CTA 通栏 ===== */
.cta-band{
  background:linear-gradient(160deg,var(--deep),var(--deep-2));
  border-radius:var(--r-l);
  padding:56px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;box-shadow:var(--sh-3);
}
.cta-band h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;letter-spacing:-.015em;line-height:1.25;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{font-size:12px;color:rgba(255,255,255,.55);margin-top:12px;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:96px;
  background:linear-gradient(180deg,var(--deep),var(--deep-2));
  color:#fff;
}
.footer-top{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding-block:64px;
}
.footer-brand .brand-mark{color:#fff;font-size:22px;}
.footer-brand .brand-sub{background:transparent;border-color:rgba(255,255,255,.24);color:rgba(255,255,255,.72);}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);max-width:280px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:rgba(255,255,255,.6);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.86);transition:color var(--t);}
.footer-col a:hover{color:var(--lime);}
.footer-note{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9;}
.footer-byline{
  margin-top:20px;display:flex;align-items:center;gap:12px;
  padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
}
.avatar{
  width:36px;height:36px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.12);color:#fff;font-weight:700;font-size:14px;flex:0 0 auto;
}
.footer-byline span{font-size:13px;color:rgba(255,255,255,.7);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-block:24px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.58);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:var(--lime);}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .header-inner{gap:20px;}
  .nav-link{padding:10px 10px;font-size:14px;}
  .fake{display:none;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding-block:72px;}
  .section--tight{padding-block:56px;}
  .nav-burger{display:flex;}
  .nav{
    position:absolute;left:0;right:0;top:100%;margin-left:0;display:none;
    background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    padding:12px 24px 24px;max-height:calc(100vh - 72px);overflow:auto;
  }
  .nav-toggle-input:checked ~ .nav{display:block;}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{padding:12px 4px;font-size:16px;border-bottom:1px solid var(--line);}
  .nav-link::after{left:4px;right:auto;width:32px;bottom:-1px;}
  .mega{
    position:static;transform:none;opacity:1;visibility:visible;pointer-events:auto;
    width:auto;grid-template-columns:1fr;gap:12px;padding:12px 0 4px;
    border:none;box-shadow:none;border-radius:0;display:none;
  }
  .nav-item.has-mega:hover .mega,
  .nav-item.has-mega:focus-within .mega{transform:none;display:grid;}
  .mega-cols{grid-template-columns:1fr 1fr;}
  .statbar{grid-template-columns:repeat(2,1fr);}
  .statbar .stat:nth-child(2){border-right:none;}
  .statbar .stat:nth-child(1),
  .statbar .stat:nth-child(2){border-bottom:1px solid var(--line);}
  .mag-card{grid-column:span 6;}
  .mag-card--big{grid-column:span 12;flex-direction:column;}
  .mag-card--big .mag-thumb{flex:none;min-height:0;aspect-ratio:16/9;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .footer-top{grid-template-columns:1fr 1fr;gap:32px 24px;padding-block:48px;}
}
@media (max-width:767px){
  .hero{padding-top:36px;padding-bottom:48px;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .section{padding-block:48px;}
  .section--tight{padding-block:40px;}
  .wide-figure{aspect-ratio:16/11;}
  .wide-figure figcaption{padding:20px;}
  .wide-figure figcaption strong{font-size:18px;}
  .mag-card,.mag-card--big{grid-column:span 12;}
  .steps{grid-template-columns:1fr;}
  .statbar{grid-template-columns:1fr;}
  .statbar .stat{border-right:none;border-bottom:1px solid var(--line);}
  .statbar .stat:last-child{border-bottom:none;}
  .cta-band{padding:36px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-top{grid-template-columns:1fr;}
  .mega-cols{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .brand-mark{font-size:19px;}
  .hero h1{font-size:30px;}
  .mag-body{padding:16px;}
  .statbar .stat{padding:18px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0D0F0E;
  --ink-700:#2A2F2C;
  --ink-500:#5C6360;
  --ink-300:#9AA19D;
  --line:#E4E1DB;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --surface-2:#F0EDE7;
  --brand:#FF4A1C;
  --brand-600:#E63A0F;
  --brand-50:#FFF1EA;
  --deep:#10362E;
  --deep-2:#0A241E;
  --lime:#CBFF52;
  --r-s:8px;
  --r-m:12px;
  --r-l:18px;
  --r-full:999px;
  --sh-1:0 1px 2px rgba(13,15,14,.06);
  --sh-2:0 12px 28px -14px rgba(13,15,14,.20);
  --sh-3:0 28px 60px -30px rgba(16,54,46,.35);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,
*::before,
*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink-900);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-full);
  background:var(--brand-50);
  color:var(--brand);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.h2{
  font-size:clamp(26px,3vw,40px);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.2;
  margin-top:14px;
}
.lead{color:var(--ink-500);font-size:15px;margin-top:12px;max-width:640px;}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.sec-head .note{font-size:13px;color:var(--ink-500);}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:var(--r-s);
  font-size:15px;
  font-weight:700;
  transition:transform .2s ease-out,background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0) scale(.985);}
.btn-ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent;}
.btn-ghost:hover{background:var(--ink-900);color:#fff;}
.btn-ghost:active{transform:scale(.985);}
.btn-onDeep{background:#fff;color:var(--deep);}
.btn-onDeep:hover{background:var(--lime);color:var(--deep-2);transform:translateY(-1px);}
.btn-lineDeep{border:1px solid var(--lime);color:var(--lime);background:transparent;}
.btn-lineDeep:hover{background:rgba(203,255,82,.12);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:700;
  color:var(--brand);
  transition:color .2s ease-out;
}
.btn-text .arrow{transition:transform .2s ease-out;}
.btn-text:hover{color:var(--brand-600);}
.btn-text:hover .arrow{transform:translateX(4px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}

/* 顶部导航 */
.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,241,.94);
  backdrop-filter:saturate(140%) blur(6px);
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
  border-bottom:1px solid transparent;
}
.site-head.is-scrolled{
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.head-inner{
  display:flex;
  align-items:center;
  gap:32px;
  min-height:72px;
}
.logo{
  display:flex;
  flex-direction:column;
  line-height:1.05;
  flex:0 0 auto;
}
.logo-mark{
  font-size:19px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink-900);
}
.logo-sub{
  font-size:11px;
  letter-spacing:.22em;
  color:var(--brand);
  font-weight:700;
  margin-top:2px;
}
.nav{margin-left:auto;}
.nav-list{
  display:flex;
  align-items:center;
  gap:4px;
}
.nav-item{position:relative;}
.nav-link{
  position:relative;
  display:block;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-700);
  border-radius:var(--r-s);
  transition:color .2s ease-out;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:2px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s ease-out;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after,
.nav-link.is-current::after{transform:scaleX(1);}
.nav-link.is-current{color:var(--ink-900);}

/* Mega */
.mega{
  position:absolute;
  top:calc(100% + 10px);
  left:50%;
  transform:translate(-50%,8px);
  width:640px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-2);
  padding:20px;
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:20px;
  opacity:0;
  visibility:hidden;
  transition:opacity .18s ease-out,transform .18s ease-out,visibility .18s;
}
.has-mega:hover .mega,
.has-mega:focus-within .mega{
  opacity:1;
  visibility:visible;
  transform:translate(-50%,0);
}
.mega-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2px 16px;
}
.mega-link{
  display:block;
  position:relative;
  padding:9px 10px 9px 14px;
  font-size:14px;
  color:var(--ink-500);
  border-radius:var(--r-s);
  line-height:1.5;
  transition:color .18s ease-out,background-color .18s ease-out;
}
.mega-link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  transform:translateY(-50%);
  width:3px;
  height:0;
  background:var(--brand);
  border-radius:2px;
  transition:height .18s ease-out;
}
.mega-link:hover{color:var(--ink-900);background:var(--surface-2);}
.mega-link:hover::before{height:18px;}
.mega-card{
  background:var(--surface-2);
  border-radius:var(--r-m);
  padding:16px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.mega-card strong{font-size:15px;}
.mega-card p{font-size:13px;color:var(--ink-500);line-height:1.6;}
.mega-card .btn-text{margin-top:auto;font-size:13px;}

.nav-toggle{
  display:none;
  margin-left:auto;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-s);
  background:var(--surface);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink-900);
  border-radius:2px;
  transition:transform .2s ease-out,opacity .2s ease-out;
}
body.menu-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
body.menu-open .nav-toggle span:nth-child(2){opacity:0;}
body.menu-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* Hero */
.hero{
  position:relative;
  padding:72px 0 88px;
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(228,225,219,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(228,225,219,.55) 1px,transparent 1px);
  background-size:48px 48px;
  overflow:hidden;
}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero h1{
  font-size:clamp(34px,5.2vw,64px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.1;
  margin-top:20px;
}
.hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.hero-sub{
  margin-top:18px;
  font-size:17px;
  color:var(--ink-500);
  max-width:520px;
}
.hero-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:32px;
  flex-wrap:wrap;
}
.hero-meta{
  margin-top:20px;
  font-size:13px;
  color:var(--ink-500);
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.hero-meta .sep{width:1px;height:12px;background:var(--line);display:inline-block;}
.hero-media{
  position:relative;
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-2);
  background:var(--surface-2);
  aspect-ratio:16/11;
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .22s ease-out;
}
.hero-media:hover img{transform:scale(1.03);}
.hero-media::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:52%;
  background:linear-gradient(180deg,rgba(16,54,46,0) 0%,rgba(16,54,46,.55) 100%);
}
.hero-tag{
  position:absolute;
  left:18px;
  bottom:18px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-full);
  background:rgba(255,255,255,.94);
  color:var(--deep);
  font-size:12px;
  font-weight:700;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:inline-block;}

/* 状态条 */
.statusbar{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.statusbar-inner{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
}
.status-cell{
  background:var(--surface);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.status-cell .num{
  font-size:30px;
  font-weight:800;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--ink-900);
  line-height:1.1;
}
.status-cell .num span{font-size:14px;font-weight:600;color:var(--ink-500);margin-left:4px;}
.status-cell .label{font-size:13px;color:var(--ink-500);}
.status-cell .bar{
  margin-top:8px;
  height:4px;
  border-radius:2px;
  background:var(--surface-2);
  overflow:hidden;
}
.status-cell .bar i{display:block;height:100%;background:var(--brand);border-radius:2px;}

/* 时间轴 + 快照卡 */
.tl-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 360px;
  gap:56px;
  align-items:start;
}
.timeline{
  position:relative;
  padding-left:36px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:9px;
  top:8px;
  bottom:8px;
  width:2px;
  background:var(--line);
}
.tl-item{
  position:relative;
  padding-bottom:48px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-36px;
  top:8px;
  width:20px;
  height:20px;
  border-radius:50%;
  background:var(--surface);
  border:2px solid var(--brand);
  box-shadow:0 0 0 5px var(--bg);
}
.tl-num{
  font-size:26px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1;
  display:block;
  margin-bottom:8px;
}
.tl-item h3{font-size:22px;font-weight:700;line-height:1.35;}
.tl-item p{
  margin-top:10px;
  color:var(--ink-500);
  font-size:15px;
  max-width:640px;
}
.tl-facts{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top:16px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-full);
  border:1px solid var(--line);
  background:var(--surface);
  font-size:12px;
  color:var(--ink-700);
  font-variant-numeric:tabular-nums;
}
.chip.is-brand{background:var(--brand-50);border-color:transparent;color:var(--brand);font-weight:700;}

.snap-wrap{position:sticky;top:104px;}
.snap-card{
  background:var(--surface-2);
  border-radius:var(--r-l);
  padding:26px;
  border:1px solid var(--line);
}
.snap-card h3{font-size:18px;font-weight:700;}
.snap-card .snap-sub{font-size:13px;color:var(--ink-500);margin-top:6px;}
.snap-list{margin-top:20px;display:flex;flex-direction:column;gap:0;}
.snap-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-top:1px solid rgba(13,15,14,.08);
  font-size:14px;
  color:var(--ink-700);
  line-height:1.6;
}
.snap-list li::before{
  content:"";
  flex:0 0 auto;
  width:6px;
  height:6px;
  margin-top:9px;
  border-radius:2px;
  background:var(--brand);
}
.snap-card .btn{width:100%;margin-top:22px;}
.snap-note{font-size:12px;color:var(--ink-500);margin-top:12px;text-align:center;}

/* 图文宽带 */
.media-band{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.band-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
}
.band-media{
  border-radius:var(--r-l);
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--surface-2);
}
.band-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease-out;}
.band-media:hover img{transform:scale(1.03);}
.band-copy h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.25;
  margin-top:14px;
}
.band-copy p{margin-top:16px;color:var(--ink-500);}
.band-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.band-list li{
  display:flex;
  gap:12px;
  font-size:15px;
  color:var(--ink-700);
}
.band-list li::before{
  content:"";
  flex:0 0 auto;
  width:18px;
  height:18px;
  margin-top:5px;
  border-radius:50%;
  background:var(--brand-50);
  box-shadow:inset 0 0 0 1.5px var(--brand);
}

/* 步骤 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:26px 24px;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--ink-300);}
.step .step-num{
  font-size:13px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.08em;
}
.step h3{font-size:18px;font-weight:700;margin-top:10px;}
.step p{font-size:14px;color:var(--ink-500);margin-top:10px;}
.step .step-line{
  margin-top:18px;
  height:3px;
  border-radius:2px;
  background:var(--surface-2);
  overflow:hidden;
}
.step .step-line i{display:block;height:100%;background:var(--brand);border-radius:2px;}

/* 深色 CTA 带 */
.cta-band{
  background:linear-gradient(180deg,var(--deep) 0%,var(--deep-2) 100%);
  border-radius:var(--r-l);
  padding:48px 48px;
  display:grid;
  grid-template-columns:6fr 4fr;
  gap:40px;
  align-items:center;
  color:#fff;
}
.cta-band h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.015em;
}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-actions .hint{font-size:12px;color:rgba(255,255,255,.6);}

/* FAQ */
.faq{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 26px;
  text-align:left;
  font-size:17px;
  font-weight:700;
  color:var(--ink-900);
  transition:color .2s ease-out,background-color .2s ease-out;
}
.faq-q:hover{color:var(--brand);background:var(--surface-2);}
.faq-q .sign{
  flex:0 0 auto;
  width:22px;
  height:22px;
  position:relative;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  background:var(--brand);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-q .sign::before{width:12px;height:2px;}
.faq-q .sign::after{width:2px;height:12px;}
.faq-item.is-open .faq-q .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{
  display:none;
  padding:0 26px 24px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-500);
  max-width:860px;
}
.faq-item.is-open .faq-a{display:block;}

/* 面包屑 */
.crumb{
  font-size:13px;
  color:var(--ink-500);
  display:flex;
  align-items:center;
  gap:8px;
  padding:20px 0 0;
  flex-wrap:wrap;
}
.crumb a{transition:color .2s ease-out;}
.crumb a:hover{color:var(--brand);}
.crumb .cur{color:var(--ink-900);font-weight:700;}
.crumb .slash{color:var(--ink-300);}

/* 页脚 */
.site-foot{
  background:linear-gradient(180deg,var(--deep) 0%,var(--deep-2) 100%);
  color:#fff;
  margin-top:96px;
  padding:64px 0 28px;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
}
.foot-brand .logo-mark{color:#fff;}
.foot-brand .logo-sub{color:var(--lime);}
.foot-brand p{
  margin-top:16px;
  font-size:14px;
  color:rgba(255,255,255,.7);
  max-width:300px;
}
.foot-col h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  color:rgba(255,255,255,.55);
  margin-bottom:18px;
}
.foot-col ul{display:flex;flex-direction:column;gap:12px;}
.foot-col a{
  font-size:14px;
  color:rgba(255,255,255,.82);
  transition:color .2s ease-out;
}
.foot-col a:hover{color:var(--lime);}
.foot-col .info{font-size:14px;color:rgba(255,255,255,.72);line-height:1.9;}
.foot-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.foot-bottom a{color:rgba(255,255,255,.7);}
.foot-bottom a:hover{color:var(--lime);}

/* 响应式 */
@media (max-width:1199px){
  .tl-grid{grid-template-columns:minmax(0,1fr) 320px;gap:40px;}
  .head-inner{gap:20px;}
  .nav-link{padding:10px 10px;font-size:14px;}
  .nav-link::after{left:10px;right:10px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .nav-toggle{display:flex;}
  .nav{
    position:fixed;
    inset:72px 0 0 0;
    background:var(--bg);
    padding:20px 24px 48px;
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .22s ease-out;
    border-top:1px solid var(--line);
    margin-left:0;
  }
  body.menu-open .nav{transform:translateX(0);}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-link{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-link::after{left:4px;right:auto;width:32px;bottom:0;}
  .mega{
    position:static;
    opacity:1;
    visibility:visible;
    transform:none;
    width:100%;
    box-shadow:none;
    border:0;
    background:transparent;
    padding:8px 0 16px;
    grid-template-columns:1fr;
    gap:12px;
  }
  .mega-cols{grid-template-columns:1fr 1fr;gap:0 12px;}
  .mega-link{padding:9px 10px 9px 14px;font-size:14px;}
  .hero{padding:48px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{font-size:clamp(32px,7vw,48px);}
  .statusbar-inner{grid-template-columns:repeat(2,1fr);}
  .tl-grid{grid-template-columns:1fr;gap:40px;}
  .snap-wrap{position:static;}
  .band-grid{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:36px 0 48px;}
  .hero h1{font-size:clamp(30px,8.4vw,40px);}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .statusbar-inner{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .tl-item h3{font-size:19px;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a{padding:0 18px 20px;}
  .cta-band{padding:28px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .site-foot{margin-top:64px;padding:48px 0 24px;}
  .mega-cols{grid-template-columns:1fr;}
}
@media (max-width:479px){
  body{font-size:15px;}
  .logo-mark{font-size:17px;}
  .step{padding:20px 18px;}
  .snap-card{padding:20px;}
  .status-cell{padding:20px 16px;}
  .status-cell .num{font-size:26px;}
}