/* roulang page: index */
:root{
  --brand-600:#E8542F;
  --brand-500:#FF6A3D;
  --brand-100:#FFE6DC;
  --accent-600:#0E8C7F;
  --accent-100:#DFF3EF;
  --signal-400:#FFC53D;
  --ink-900:#17120F;
  --ink-700:#3A322C;
  --ink-500:#6B615A;
  --ink-300:#A79D95;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --line:#E9E2D9;
  --dark-bg:#17120F;
  --dark-ink:#FBF7F2;
  --dark-muted:#C9C0B8;
  --ok:#1F9D55;
  --warn:#E8542F;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 2px 8px rgba(23,18,15,.06);
  --sh-2:0 8px 24px rgba(23,18,15,.08);
  --sh-3:0 18px 44px rgba(23,18,15,.12);
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ---------- reset / base ---------- */
*,*::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:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;background-color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0;padding:0}
h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:-0.01em;color:var(--ink-900);font-family:inherit}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--ink-900)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- layout ---------- */
.container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;width:100%}
.section{padding-top:88px;padding-bottom:88px}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--dark-bg);color:var(--dark-ink)}
.section-dark h2,.section-dark h3{color:var(--dark-ink)}
.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(24px,3.2vw,34px)}
.section-head p{color:var(--ink-500);font-size:15px;max-width:560px;margin-top:10px}
.section-head .head-link{font-size:14px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.section-head .head-link svg{transition:transform .2s var(--ease)}
.section-head .head-link:hover svg{transform:translateX(4px)}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent-600);text-transform:uppercase;margin-bottom:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;transition:all .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 12px rgba(232,84,47,.24)}
.btn-primary:hover{background:#d44a27;transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,84,47,.32);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 8px rgba(232,84,47,.24)}
.btn-outline{background:transparent;color:var(--brand-600);border-color:rgba(232,84,47,.45)}
.btn-outline:hover{background:rgba(232,84,47,.08);border-color:var(--brand-600);color:var(--brand-600)}
.btn-dark{background:var(--ink-900);color:#fff}
.btn-dark:hover{background:#2b231d;transform:translateY(-2px);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:#0b7a6e;transform:translateY(-2px);color:#fff}
.btn-lg{height:54px;padding:0 32px;font-size:16px}
.btn-sm{height:44px;padding:0 22px;font-size:14px}
.btn-block{width:100%}
.btn-text{background:none;color:var(--brand-600);font-weight:700;padding:0;height:auto}
.btn-text:hover{color:var(--accent-600)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;line-height:1.5;letter-spacing:.01em;
}
.badge b{font-variant-numeric:tabular-nums;font-size:13.5px}
.badge-signal{background:var(--signal-400);color:#3A2A00}
.badge-accent{background:var(--accent-100);color:#0A5F56}
.badge-brand{background:var(--brand-100);color:#8F3115}
.badge-ok{background:rgba(31,157,85,.14);color:#12703B}
.badge-dark{background:rgba(255,255,255,.1);color:var(--dark-ink);border:1px solid rgba(255,255,255,.14)}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,247,242,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 6px 20px rgba(23,18,15,.07)}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:72px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{display:inline-flex;width:36px;height:36px;flex-shrink:0}
.brand-name{font-size:19px;font-weight:800;letter-spacing:-0.01em;color:var(--ink-900);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;font-size:15px;font-weight:600;color:var(--ink-700);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:8px;height:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-600)}
.nav-link.is-active::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);flex-shrink:0;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* drawer */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:90;
  background:var(--bg);display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .3s var(--ease);
  box-shadow:-16px 0 40px rgba(23,18,15,.16);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:44px;height:44px;border-radius:12px;font-size:26px;line-height:1;color:var(--ink-500);border:1px solid var(--line);background:#fff}
.drawer-nav{display:flex;flex-direction:column;padding:12px 20px;gap:2px;flex:1}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:600;
  color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-600)}
.drawer-nav a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);margin-right:10px}
.drawer-cta{padding:16px 20px 24px;border-top:1px solid var(--line)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,15,.42);z-index:85;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink-900)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(232,84,47,.92) 0%,rgba(232,84,47,.72) 38%,rgba(14,140,127,.68) 100%);
}
.hero-overlay::after{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 16px);
}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;min-height:min(76vh,720px);display:flex;align-items:center}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;color:#fff;font-size:13px;font-weight:700;letter-spacing:.12em;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.26);
  padding:7px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-title{
  color:#fff;font-size:clamp(30px,5vw,50px);line-height:1.2;font-weight:800;
  letter-spacing:-0.01em;margin-bottom:18px;text-shadow:0 2px 18px rgba(23,18,15,.18);
}
.hero-sub{color:rgba(255,255,255,.92);font-size:17px;line-height:1.75;max-width:600px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badge{
  display:inline-flex;align-items:baseline;gap:7px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  color:#fff;padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;
}
.hero-badge b{font-variant-numeric:tabular-nums;font-size:18px;font-weight:800;line-height:1}

/* quick card */
.quick-card{
  background:#fff;border-radius:var(--r-lg);box-shadow:0 24px 56px rgba(23,18,15,.24);
  padding:26px;margin-top:28px;
}
.quick-card h3{font-size:18px;font-weight:800;margin-bottom:4px}
.quick-card .quick-note{font-size:13px;color:var(--ink-500);margin-bottom:18px}
.quick-row{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
.quick-row:last-of-type{border-bottom:0}
.quick-row dt{font-size:13px;color:var(--ink-500);font-weight:600;flex-shrink:0}
.quick-row dd{margin:0;font-size:14px;font-weight:700;text-align:right;color:var(--ink-900)}
.quick-card .btn{margin-top:18px}
.quick-foot{font-size:12.5px;color:var(--ink-300);margin-top:14px;text-align:center}

/* ---------- metric strip ---------- */
.metric-strip{background:var(--bg-alt);border-bottom:1px solid var(--line)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric-cell{padding:28px 24px;border-right:1px solid var(--line);text-align:center}
.metric-cell:last-child{border-right:0}
.metric-cell .m-num{
  font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.1;color:var(--brand-600);
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.metric-cell .m-num small{font-size:15px;font-weight:700;margin-left:3px;color:var(--ink-700)}
.metric-cell .m-label{font-size:13.5px;color:var(--ink-500);margin-top:6px;font-weight:600}

/* ---------- timeline ---------- */
.timeline{position:relative;padding:10px 0 0}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;
  background:linear-gradient(180deg,var(--brand-600),var(--accent-600));
  border-radius:2px;
}
.tl-item{position:relative;width:50%;padding-right:48px;margin-bottom:34px}
.tl-item:nth-child(even){margin-left:50%;padding-right:0;padding-left:48px}
.tl-item::after{
  content:"";position:absolute;top:24px;right:-7px;width:14px;height:14px;border-radius:50%;
  background:var(--bg);border:3px solid var(--brand-600);z-index:2;
}
.tl-item:nth-child(even)::after{right:auto;left:-7px;border-color:var(--accent-600)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.tl-card:hover{border-color:rgba(232,84,47,.32);box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.tl-time{font-size:20px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;letter-spacing:-0.01em}
.tl-title{font-size:17px;font-weight:700;margin-bottom:6px}
.tl-meta{font-size:13.5px;color:var(--ink-500);line-height:1.7}
.tl-meta span{display:inline-block;margin-right:14px}

/* ---------- speakers ---------- */
.speaker-row{margin-bottom:0}
.speaker-card{
  position:relative;overflow:hidden;border-radius:var(--r-lg);background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-1);height:100%;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  margin-bottom:24px;
}
.speaker-card:hover{border-color:rgba(232,84,47,.3);box-shadow:var(--sh-3);transform:translateY(-3px)}
.speaker-card .sp-media{overflow:hidden;background:var(--bg-alt)}
.speaker-card .sp-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.speaker-card:hover .sp-media img{transform:scale(1.04)}
.speaker-card.large .sp-media{aspect-ratio:16/10}
.speaker-card.small .sp-media{aspect-ratio:3/2}
.sp-body{padding:22px 24px 24px}
.sp-body h3{font-size:18px;font-weight:800;margin-bottom:4px}
.sp-role{font-size:13.5px;color:var(--ink-500);margin-bottom:12px}
.sp-tags{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- tabs + pricing ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;background:var(--bg-alt);padding:6px;border-radius:999px;width:fit-content;margin-bottom:32px;border:1px solid var(--line)}
.tab{
  height:44px;padding:0 24px;border-radius:999px;font-size:14.5px;font-weight:700;
  color:var(--ink-500);background:transparent;transition:all .2s var(--ease);
}
.tab:hover{color:var(--brand-600)}
.tab.is-active{background:#fff;color:var(--brand-600);box-shadow:var(--sh-1)}
.tab-pane{display:none}
.tab-pane.is-active{display:block}
.plan-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px;height:100%;display:flex;flex-direction:column;margin-bottom:24px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.plan-card:hover{border-color:rgba(232,84,47,.3);box-shadow:var(--sh-2);transform:translateY(-2px)}
.plan-card.featured{
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),linear-gradient(135deg,var(--brand-600),var(--accent-600));
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:var(--sh-2);
}
.plan-name{font-size:15px;font-weight:700;color:var(--ink-700);margin-bottom:6px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.plan-price .cur{font-size:17px;font-weight:700;color:var(--brand-600)}
.plan-price .val{font-size:38px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1;letter-spacing:-0.02em}
.plan-price .unit{font-size:13.5px;color:var(--ink-500);font-weight:600}
.plan-desc{font-size:13.5px;color:var(--ink-500);margin-bottom:20px}
.plan-list{flex:1}
.plan-list li{
  position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-700);line-height:1.7;margin-bottom:11px;
}
.plan-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--accent-600);border-bottom:2px solid var(--accent-600);
  transform:rotate(-45deg);border-radius:1px;
}
.plan-card .btn{margin-top:22px}
.plan-flag{position:absolute;top:-13px;left:28px}

/* ---------- signup CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;
  background:linear-gradient(135deg,var(--brand-600) 0%,var(--accent-600) 100%);
  padding:52px 48px;color:#fff;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.07;
  background-image:repeating-linear-gradient(135deg,#fff 0 1px,transparent 1px 14px);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.92);font-size:15.5px;max-width:520px;margin-bottom:22px}
.cta-points li{position:relative;padding-left:26px;font-size:15px;color:rgba(255,255,255,.94);margin-bottom:12px}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--signal-400);
}

/* ---------- form ---------- */
.form-card{background:#fff;border-radius:var(--r-lg);padding:32px;box-shadow:0 26px 60px rgba(23,18,15,.22);color:var(--ink-900)}
.form-card h3{font-size:20px;font-weight:800;margin-bottom:6px}
.form-card .form-note{font-size:13.5px;color:var(--ink-500);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--ink-700);margin-bottom:8px}
.field .req{color:var(--brand-600)}
.field input[type="text"],.field input[type="tel"],.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:12px;
  background:var(--bg);transition:border-color .18s var(--ease),background .18s var(--ease);
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:40px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border:2px solid var(--brand-600);background:#fff;box-shadow:none}
.field.has-error input,.field.has-error select{border-color:var(--warn)}
.field-error{display:block;font-size:12.5px;color:var(--warn);margin-top:6px;min-height:0}
.check-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px}
.check-row input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-600);flex-shrink:0}
.check-row label{font-size:13.5px;color:var(--ink-500);line-height:1.7}
.form-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ---------- posts ---------- */
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  height:100%;display:flex;flex-direction:column;margin-bottom:24px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.post-card:hover{border-color:rgba(232,84,47,.3);box-shadow:var(--sh-2);transform:translateY(-3px)}
.post-media{position:relative;overflow:hidden;background:var(--bg-alt);aspect-ratio:16/10}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.post-card:hover .post-media img{transform:scale(1.04)}
.post-media .badge{position:absolute;left:14px;top:14px}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.post-title{font-size:17.5px;font-weight:700;line-height:1.45;margin-bottom:10px}
.post-card:hover .post-title{color:var(--brand-600)}
.post-excerpt{font-size:14px;color:var(--ink-500);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300)}
.post-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand-600);font-size:13.5px}
.post-link svg{transition:transform .2s var(--ease)}
.post-card:hover .post-link svg{transform:translateX(4px)}
.post-time{font-variant-numeric:tabular-nums}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);background:#fff;text-align:center;
}
.empty-state svg{color:var(--ink-300)}
.empty-state p{font-size:14.5px;color:var(--ink-500)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:880px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item:hover{border-color:rgba(232,84,47,.28)}
.faq-item[open]{border-color:rgba(232,84,47,.4);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:700;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-no{font-variant-numeric:tabular-nums;font-size:13px;font-weight:800;color:var(--accent-600);letter-spacing:.04em;flex-shrink:0}
.faq-q{flex:1}
.faq-arrow{width:20px;height:20px;flex-shrink:0;color:var(--ink-300);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item[open] .faq-arrow{transform:rotate(180deg);color:var(--brand-600)}
.faq-body{
  padding:0 22px 20px 60px;font-size:14.5px;color:var(--ink-500);line-height:1.85;
  border-left:3px solid var(--accent-600);margin-left:22px;background:var(--bg-alt);
  border-radius:0 0 var(--r-md) 0;
}
.faq-body p{margin-bottom:10px}
.faq-body p:last-child{margin-bottom:0}
.faq-foot{text-align:center;margin-top:28px;font-size:14px;color:var(--ink-500)}
.faq-foot a{color:var(--brand-600);font-weight:700;border-bottom:1px solid rgba(232,84,47,.4)}

/* ---------- footer ---------- */
.site-footer{background:var(--dark-bg);color:var(--dark-ink);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-name{color:var(--dark-ink)}
.footer-about{font-size:14px;color:var(--dark-muted);line-height:1.85;max-width:320px;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.14);
  display:inline-flex;align-items:center;justify-content:center;color:var(--dark-muted);
  transition:all .2s var(--ease);
}
.footer-social a:hover{border-color:var(--brand-500);color:var(--brand-500);background:rgba(232,84,47,.12)}
.footer-col h4{font-size:15px;font-weight:700;color:var(--dark-ink);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:var(--dark-muted);transition:color .18s var(--ease)}
.footer-col ul a:hover{color:var(--brand-500)}
.footer-contact li{font-size:14px;color:var(--dark-muted);margin-bottom:12px;line-height:1.7}
.footer-contact b{color:var(--dark-ink);font-weight:700;display:block;font-size:12.5px;letter-spacing:.08em;margin-bottom:2px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--dark-muted);
}
.footer-bottom a{color:var(--dark-muted)}
.footer-bottom a:hover{color:var(--brand-500)}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .section{padding-top:64px;padding-bottom:64px}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
  .main-nav{display:none}
  .nav-wrap{justify-content:space-between;gap:16px;min-height:60px}
  .hero-inner{padding-top:56px;padding-bottom:56px;min-height:auto}
  .quick-card{margin-top:32px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric-cell:nth-child(2){border-right:0}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-band{padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media screen and (max-width:767px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding-top:48px;padding-bottom:48px}
  .section-head{margin-bottom:28px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1 1 auto}
  .timeline::before{left:7px}
  .tl-item,.tl-item:nth-child(even){width:100%;margin-left:0;padding-left:36px;padding-right:0;margin-bottom:20px}
  .tl-item::after,.tl-item:nth-child(even)::after{left:0;right:auto;top:22px;border-color:var(--brand-600)}
  .form-split{grid-template-columns:1fr}
  .form-card{padding:24px}
  .cta-band{padding:32px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .tabs{width:100%;justify-content:space-between}
  .tab{flex:1;padding:0 12px;font-size:13.5px}
  .faq-body{padding-left:24px;margin-left:18px}
  .faq-item summary{padding:16px;gap:12px;font-size:15px}
}
@media screen and (max-width:519px){
  .metric-grid{grid-template-columns:1fr}
  .metric-cell{border-right:0;border-bottom:1px solid var(--line)}
  .metric-cell:last-child{border-bottom:0}
  .hero-badge b{font-size:16px}
  .brand-name{font-size:17px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand-600:#E8542F;
  --brand-500:#FF6A3D;
  --brand-100:#FFE6DC;
  --accent-600:#0E8C7F;
  --accent-100:#DFF3EF;
  --signal-400:#FFC53D;
  --ink-900:#17120F;
  --ink-700:#3A322C;
  --ink-500:#6B615A;
  --ink-300:#A79D95;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --line:#E9E2D9;
  --dark-bg:#17120F;
  --dark-text:#FBF7F2;
  --dark-muted:#C9C0B8;
  --ok:#1F9D55;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-1:0 2px 10px rgba(23,18,15,.06);
  --shadow-2:0 8px 24px rgba(23,18,15,.08);
  --shadow-3:0 16px 44px rgba(23,18,15,.12);
  --wrap:1200px;
  --read:780px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent-600);}
button{font-family:inherit;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:32px;padding-right:32px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
.skip-link{position:absolute;left:-9999px;top:0;}
.skip-link:focus{left:16px;top:12px;background:#fff;padding:10px 16px;border-radius:999px;box-shadow:var(--shadow-2);z-index:200;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(251,247,242,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:inline-flex;width:36px;height:36px;}
.brand-name{font-size:20px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:30px;margin-left:14px;flex:1 1 auto;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-700);
  padding:8px 2px;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--brand-600);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s cubic-bezier(.2,.8,.2,1);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::before{
  content:"";position:absolute;left:50%;top:-4px;width:5px;height:5px;margin-left:-2.5px;
  border-radius:50%;background:var(--brand-600);
}
.nav-link.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .18s cubic-bezier(.2,.8,.2,1),color .18s ease,border-color .18s ease,transform .18s cubic-bezier(.2,.8,.2,1),box-shadow .18s cubic-bezier(.2,.8,.2,1);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 4px 12px rgba(232,84,47,.24);}
.btn-primary:hover{background:#d1451f;color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,84,47,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 3px 8px rgba(232,84,47,.24);}
.btn-outline{background:transparent;border-color:rgba(232,84,47,.5);color:var(--brand-600);}
.btn-outline:hover{background:var(--brand-100);border-color:var(--brand-600);color:var(--brand-600);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- Drawer ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:308px;max-width:88vw;z-index:160;
  background:#fff;box-shadow:var(--shadow-3);
  transform:translateX(102%);transition:transform .28s cubic-bezier(.2,.8,.2,1);
  display:flex;flex-direction:column;padding:20px 22px 22px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-backdrop{
  position:fixed;inset:0;background:rgba(23,18,15,.44);z-index:150;
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  font-size:22px;line-height:1;color:var(--ink-700);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0;flex:1 1 auto;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:16px;font-weight:500;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-nav a::after{content:"›";color:var(--ink-300);font-size:20px;}
.drawer-nav a.is-active{color:var(--brand-600);}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line);}

/* ---------- Reading progress ---------- */
.read-progress{height:3px;background:transparent;position:sticky;top:72px;z-index:110;}
.read-progress__bar{height:3px;width:0;background:linear-gradient(135deg,var(--brand-600),var(--accent-600));transition:width .1s linear;}

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar{background:var(--bg-alt);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-500);padding:13px 0;min-width:0;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);}
.breadcrumb .sep{color:var(--ink-300);}
.breadcrumb .current{
  color:var(--ink-700);font-weight:500;
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- Article head ---------- */
.article-hero{padding:56px 0 26px;}
.article-hero .inner{max-width:var(--read);margin:0 auto;padding:0 32px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 14px;
  border-radius:999px;background:var(--brand-100);color:var(--brand-600);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.chip-accent{background:var(--accent-100);color:var(--accent-600);}
.article-hero h1{
  margin-top:18px;
  font-size:clamp(28px,4vw,40px);
  line-height:1.28;font-weight:800;letter-spacing:-.01em;color:var(--ink-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:13.5px;color:var(--ink-500);
}
.article-meta .divider{width:1px;height:13px;background:var(--line);}
.article-cover{margin-top:30px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;}

/* ---------- Article body ---------- */
.article-main{padding:44px 0 8px;}
.article-layout{max-width:var(--read);margin:0 auto;padding:0 32px;}
.article-body{
  font-size:17.5px;line-height:1.9;color:var(--ink-700);
  overflow-wrap:break-word;word-wrap:break-word;
}
.article-body p{margin:0 0 1.3em;}
.article-body h2{
  position:relative;margin:44px 0 18px;padding-left:16px;
  font-size:clamp(22px,2.6vw,27px);line-height:1.35;font-weight:700;color:var(--ink-900);letter-spacing:-.005em;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--brand-600);}
.article-body h3{
  position:relative;margin:32px 0 14px;padding-left:16px;
  font-size:20px;line-height:1.45;font-weight:600;color:var(--ink-900);
}
.article-body h3::before{content:"";position:absolute;left:0;top:.5em;width:8px;height:8px;border-radius:2px;background:var(--accent-600);}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:600;color:var(--ink-900);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;margin:.5em 0;padding-left:1.5em;}
.article-body ul li::before{
  content:"";position:absolute;left:.15em;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand-600);
}
.article-body ol{counter-reset:olc;}
.article-body ol li{counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:14px;font-weight:700;color:var(--accent-600);
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:4px solid var(--brand-600);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:var(--bg-alt);color:var(--ink-700);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius-md);margin:26px auto;box-shadow:var(--shadow-1);height:auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-500);text-align:center;}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent-600);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0;}
.article-body code{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-size:15px;color:var(--brand-600);
}
.article-body pre{
  background:var(--dark-bg);color:var(--dark-text);border-radius:var(--radius-md);
  padding:18px 20px;overflow-x:auto;margin:24px 0;font-size:14.5px;line-height:1.7;
}
.article-body pre code{background:none;border:0;color:inherit;padding:0;}
.article-body table{width:100%;margin:26px 0;font-size:15.5px;}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body thead th{background:var(--bg-alt);font-weight:700;color:var(--ink-900);}
.article-body tbody tr:nth-child(even){background:var(--bg-alt);}
.article-body strong{color:var(--ink-900);font-weight:700;}

/* ---------- Empty state ---------- */
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius-lg);
  background:#fff;box-shadow:var(--shadow-1);
}
.empty-state svg{margin:0 auto 14px;color:var(--ink-300);}
.empty-state p{font-size:15px;color:var(--ink-500);margin-bottom:18px;}

/* ---------- Tags & share ---------- */
.article-tail{margin-top:44px;padding-top:28px;border-top:1px solid var(--line);}
.tail-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.tail-row + .tail-row{margin-top:20px;}
.tail-label{font-size:13.5px;color:var(--ink-500);flex:0 0 auto;}
.tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:13.5px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.tag:hover{background:var(--brand-600);color:#fff;}
.tag-accent{background:var(--accent-100);color:var(--accent-600);}
.tag-accent:hover{background:var(--accent-600);color:#fff;}
.share-btns{display:flex;flex-wrap:wrap;gap:10px;}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 16px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink-700);
  font-size:13.5px;font-weight:500;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.share-btn:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-100);}

/* ---------- Prev / next ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px;}
.post-nav a{
  display:block;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-md);
  background:#fff;box-shadow:var(--shadow-1);color:var(--ink-900);
  transition:border-color .18s ease,transform .18s cubic-bezier(.2,.8,.2,1),box-shadow .18s ease;
}
.post-nav a:hover{border-color:rgba(232,84,47,.35);transform:translateY(-3px);box-shadow:var(--shadow-2);color:var(--ink-900);}
.post-nav .pn-label{display:block;font-size:12.5px;color:var(--ink-500);margin-bottom:6px;letter-spacing:.04em;}
.post-nav .pn-title{font-size:15.5px;font-weight:600;line-height:1.55;}
.post-nav .pn-next{text-align:right;}
.post-back{margin-top:20px;text-align:center;}

/* ---------- Related ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink-900);letter-spacing:-.005em;line-height:1.3;}
.section-head p{margin-top:8px;font-size:14.5px;color:var(--ink-500);}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand-600);}
.more-link svg{transition:transform .2s ease;}
.more-link:hover svg{transform:translateX(4px);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s cubic-bezier(.2,.8,.2,1);
}
.card:hover{border-color:rgba(232,84,47,.32);box-shadow:var(--shadow-2);transform:translateY(-3px);}
.card-media{position:relative;overflow:hidden;}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s cubic-bezier(.2,.8,.2,1);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media .chip{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-600);}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{font-size:17.5px;font-weight:700;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-body p{margin-top:10px;font-size:14.5px;line-height:1.7;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-date{font-size:13px;color:var(--ink-500);font-variant-numeric:tabular-nums;}
.card-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--brand-600);}
.card-link svg{transition:transform .2s ease;}
.card:hover .card-link svg{transform:translateX(4px);}
.mini-empty{
  padding:44px 24px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius-lg);
  background:rgba(255,255,255,.6);color:var(--ink-500);font-size:14.5px;
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  padding:56px 48px;color:#fff;
  background-image:linear-gradient(135deg,rgba(232,84,47,.92),rgba(14,140,127,.9)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  background-blend-mode:normal;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 2px,transparent 2px 12px);
  opacity:.9;
}
.cta-band .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:34px;}
.cta-band h2{font-size:clamp(22px,2.8vw,32px);font-weight:800;line-height:1.32;letter-spacing:-.005em;color:#fff;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.75;color:rgba(255,255,255,.88);max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}
.cta-actions .btn-primary{background:#fff;color:var(--brand-600);box-shadow:0 8px 22px rgba(23,18,15,.2);}
.cta-actions .btn-primary:hover{background:#fff;color:#c23f1c;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark-bg);color:var(--dark-muted);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;color:var(--dark-text);}
.footer-brand .brand-name{font-size:19px;font-weight:800;color:var(--dark-text);letter-spacing:-.01em;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:var(--dark-muted);max-width:34ch;}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;
  border:1px solid rgba(255,255,255,.12);color:var(--dark-muted);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.footer-social a:hover{border-color:rgba(255,106,61,.6);color:#fff;background:rgba(255,255,255,.06);}
.footer-col h4{font-size:15px;font-weight:700;color:var(--dark-text);margin-bottom:18px;letter-spacing:.01em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:var(--dark-muted);}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:14px;line-height:1.7;color:var(--dark-muted);}
.footer-contact .contact-key{display:block;font-size:12.5px;color:rgba(201,192,184,.7);margin-bottom:2px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(201,192,184,.82);
}
.footer-bottom a{color:rgba(201,192,184,.82);}
.footer-bottom a:hover{color:#fff;}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding-left:24px;padding-right:24px;}
  .article-layout,.article-hero .inner{padding-left:24px;padding-right:24px;}
  .section{padding:64px 0;}
}
@media (max-width:1023px){
  .main-nav{display:none;}
  .header-actions .btn-outline{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:14px;}
  .brand-name{font-size:18px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-band{padding:44px 32px;}
  .cta-band .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .read-progress{top:60px;}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px;}
  .article-layout,.article-hero .inner{padding-left:18px;padding-right:18px;}
  .header-inner{height:60px;}
  .brand-mark,.brand-mark svg{width:32px;height:32px;}
  .header-actions .btn-primary{height:40px;padding:0 18px;font-size:14px;}
  .section{padding:48px 0;}
  .article-hero{padding:34px 0 18px;}
  .article-cover{margin-top:22px;border-radius:var(--radius-md);}
  .article-cover img{aspect-ratio:16/10;}
  .article-main{padding:30px 0 4px;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;font-size:14.5px;}
  .article-body h2{margin:34px 0 14px;}
  .card-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .pn-next{text-align:left;}
  .cta-band{border-radius:var(--radius-md);padding:36px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .read-progress{top:60px;}
}
@media (max-width:520px){
  .article-body{font-size:16px;}
  .breadcrumb .current{max-width:22ch;}
  .btn{height:44px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category1 */
:root{
  --brand-600:#E8542F;
  --brand-500:#FF6A3D;
  --brand-100:#FFE6DC;
  --accent-600:#0E8C7F;
  --accent-100:#DFF3EF;
  --signal-400:#FFC53D;
  --ink-900:#17120F;
  --ink-700:#3A322C;
  --ink-500:#6B615A;
  --ink-300:#A79D95;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --line:#E9E2D9;
  --dark-bg:#17120F;
  --dark-text:#FBF7F2;
  --dark-muted:#C9C0B8;
  --ok:#1F9D55;
  --warn:#E8542F;
  --r-lg:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,18,15,.06);
  --sh-2:0 8px 24px rgba(23,18,15,.08);
  --sh-3:0 16px 40px rgba(23,18,15,.12);
  --container:1200px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand-600);text-decoration:none;background-color:transparent;transition:color .18s var(--ease);}
a:hover{color:var(--accent-600);}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
.container-narrow{max-width:780px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{
  background:var(--brand-600);
  color:#fff;
  box-shadow:0 4px 12px rgba(232,84,47,.24);
}
.btn-primary:hover{
  background:#D6471F;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(232,84,47,.30);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(232,84,47,.24);}
.btn-outline{
  background:transparent;
  color:var(--brand-600);
  border-color:rgba(232,84,47,.5);
}
.btn-outline:hover{
  background:rgba(232,84,47,.08);
  color:var(--brand-600);
  border-color:var(--brand-600);
}
.btn-ghost{
  background:transparent;
  color:var(--dark-text);
  border-color:rgba(255,255,255,.55);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-light{
  background:#fff;
  color:var(--ink-900);
  box-shadow:var(--sh-2);
}
.btn-light:hover{background:#fff;color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--sh-3);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(251,247,242,.94);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 2px 14px rgba(23,18,15,.07);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink-900);
  flex:0 0 auto;
}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:inline-flex;flex:0 0 auto;}
.brand-name{
  font-size:19px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  color:var(--ink-700);
  font-size:15.5px;
  font-weight:500;
  border-radius:var(--r-sm);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:9px;
  height:2px;
  background:var(--brand-600);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.header-cta{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  color:var(--ink-900);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(23,18,15,.45);
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;
  top:0;
  right:0;
  bottom:0;
  width:min(84vw,340px);
  background:#fff;
  z-index:80;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  display:flex;
  flex-direction:column;
  box-shadow:-16px 0 40px rgba(23,18,15,.16);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:#fff;
  font-size:20px;
  line-height:1;
  color:var(--ink-700);
  cursor:pointer;
}
.drawer-links{padding:12px 12px 0;display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  display:flex;
  align-items:center;
  min-height:52px;
  padding:0 14px;
  border-radius:var(--r-sm);
  color:var(--ink-900);
  font-size:16.5px;
  font-weight:600;
}
.drawer-links a.is-active{background:var(--brand-100);color:var(--brand-600);}
.drawer-cta{
  margin-top:auto;
  padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
}
.drawer-cta .btn{width:100%;}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  min-height:360px;
  display:flex;
  align-items:center;
  background:var(--ink-900);
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.cat-hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(135deg, rgba(255,255,255,.06) 0 2px, rgba(255,255,255,0) 2px 14px),
    linear-gradient(135deg, rgba(23,18,15,.90) 0%, rgba(232,84,47,.70) 46%, rgba(14,140,127,.42) 100%);
}
.cat-hero-inner{
  position:relative;
  z-index:2;
  padding-top:64px;
  padding-bottom:64px;
  display:grid;
  grid-template-columns:1fr auto;
  align-items:end;
  gap:40px;
  color:var(--dark-text);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  color:#fff;
}
.eyebrow::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--signal-400);
}
.cat-hero h1{
  margin-top:20px;
  max-width:800px;
  font-size:clamp(28px,4.4vw,46px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
}
.cat-hero-sub{
  margin-top:16px;
  max-width:560px;
  font-size:17px;
  line-height:1.7;
  color:rgba(251,247,242,.86);
}
.cat-hero-badge{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:4px;
  padding:18px 22px;
  border-radius:var(--r-md);
  background:rgba(23,18,15,.42);
  border:1px solid rgba(255,255,255,.20);
  backdrop-filter:blur(6px);
}
.cat-hero-badge .badge-num{
  font-size:32px;
  font-weight:800;
  line-height:1.1;
  color:var(--signal-400);
  font-variant-numeric:tabular-nums;
}
.cat-hero-badge .badge-label{
  font-size:13px;
  color:rgba(251,247,242,.80);
  white-space:nowrap;
}

/* ---------- 锚点索引条 ---------- */
.anchor-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.anchor-inner{
  display:flex;
  align-items:center;
  gap:10px;
  padding-top:14px;
  padding-bottom:14px;
  overflow-x:auto;
  scrollbar-width:none;
}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--bg);
  color:var(--ink-700);
  font-size:14.5px;
  font-weight:600;
  white-space:nowrap;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.anchor-pill:hover{
  border-color:rgba(232,84,47,.45);
  color:var(--brand-600);
  background:var(--brand-100);
}

/* ---------- 通用板块 ---------- */
.section{padding-top:88px;padding-bottom:88px;}
.section-alt{background:var(--bg-alt);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.25;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.section-head p{
  max-width:520px;
  margin-top:12px;
  font-size:16px;
  color:var(--ink-500);
}
.section-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--brand-600);
  white-space:nowrap;
}
.section-link svg{transition:transform .2s var(--ease);}
.section-link:hover svg{transform:translateX(4px);}

/* ---------- 图文交替块 ---------- */
.split-block{
  display:grid;
  grid-template-columns:1.32fr 1fr;
  gap:48px;
  align-items:center;
}
.split-block + .split-block{margin-top:80px;}
.split-block.is-reversed{grid-template-columns:1fr 1.32fr;}
.split-block.is-reversed .split-media{order:2;}
.split-block.is-reversed .split-text{order:1;}
.split-media{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:16/10;
  background:var(--bg-alt);
}
.split-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .32s var(--ease);
}
.split-media:hover img{transform:scale(1.04);}
.split-media .media-tag{
  position:absolute;
  left:18px;
  top:18px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:rgba(23,18,15,.62);
  color:#fff;
  font-size:13px;
  font-weight:600;
}
.split-text h2{
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink-900);
}
.split-text p{
  margin-top:16px;
  font-size:16.5px;
  color:var(--ink-500);
}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:16px;
  color:var(--ink-700);
}
.check-list li svg{flex:0 0 auto;margin-top:5px;}
.split-text .btn{margin-top:26px;}

/* ---------- 横向步骤条 ---------- */
.steps-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
}
.step-item{
  position:relative;
  padding:26px 22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.step-item:hover{
  border-color:rgba(232,84,47,.35);
  box-shadow:var(--sh-2);
  transform:translateY(-3px);
}
.step-item::after{
  content:"";
  position:absolute;
  top:50%;
  right:-26px;
  width:26px;
  border-top:2px dashed var(--line);
}
.step-item:last-child::after{display:none;}
.step-num{
  font-size:30px;
  font-weight:800;
  line-height:1;
  color:var(--brand-600);
  font-variant-numeric:tabular-nums;
}
.step-item h3{
  margin-top:14px;
  font-size:19px;
  font-weight:600;
  color:var(--ink-900);
}
.step-item p{
  margin-top:10px;
  font-size:15px;
  color:var(--ink-500);
}

/* ---------- 数据徽章横条 ---------- */
.metric-strip{
  background:var(--dark-bg);
  color:var(--dark-text);
  padding-top:56px;
  padding-bottom:56px;
}
.metric-row{gargin:0;}
.metric-item{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 24px;
  border-left:1px solid rgba(255,255,255,.12);
}
.metric-item:first-child{border-left:none;}
.metric-num{
  font-size:clamp(28px,3.4vw,38px);
  font-weight:800;
  line-height:1.05;
  color:var(--signal-400);
  font-variant-numeric:tabular-nums;
}
.metric-label{
  font-size:14px;
  color:var(--dark-muted);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background-image:
    repeating-linear-gradient(135deg, rgba(255,255,255,.07) 0 2px, rgba(255,255,255,0) 2px 14px),
    linear-gradient(135deg, var(--brand-600) 0%, var(--accent-600) 100%);
  color:#fff;
  padding-top:72px;
  padding-bottom:72px;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:40px;
  align-items:center;
}
.cta-inner h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.25;
  font-weight:800;
  color:#fff;
}
.cta-inner p{
  margin-top:16px;
  max-width:600px;
  font-size:16.5px;
  color:rgba(255,255,255,.90);
}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15.5px;
  color:rgba(255,255,255,.94);
}
.cta-points li::before{
  content:"";
  width:8px;height:8px;border-radius:2px;
  background:var(--signal-400);
  flex:0 0 auto;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.cta-side{
  background:rgba(23,18,15,.24);
  border:1px solid rgba(255,255,255,.20);
  border-radius:var(--r-lg);
  padding:26px;
}
.cta-side h3{
  font-size:18px;
  font-weight:700;
  color:#fff;
}
.cta-side dl{margin-top:18px;display:flex;flex-direction:column;gap:14px;}
.cta-side dt{
  font-size:13px;
  color:rgba(255,255,255,.72);
  font-weight:500;
}
.cta-side dd{
  margin:4px 0 0;
  font-size:16.5px;
  font-weight:700;
  color:#fff;
  font-variant-numeric:tabular-nums;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-list .accordion-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-list .accordion-item:hover{border-color:rgba(232,84,47,.30);}
.faq-list .accordion-item.is-active{border-color:rgba(232,84,47,.45);box-shadow:var(--sh-2);}
.faq-list .accordion-title{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  background:transparent;
  border:none;
  color:var(--ink-900);
  font-size:17px;
  font-weight:600;
  line-height:1.5;
}
.faq-list .accordion-title:hover,
.faq-list .accordion-title:focus{background:transparent;color:var(--brand-600);}
.faq-index{
  font-size:15px;
  font-weight:700;
  color:var(--brand-600);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.faq-arrow{
  margin-left:auto;
  width:11px;
  height:11px;
  flex:0 0 auto;
  border-right:2px solid var(--ink-300);
  border-bottom:2px solid var(--ink-300);
  transform:rotate(45deg);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.accordion-item.is-active .faq-arrow{
  transform:rotate(-135deg);
  border-color:var(--accent-600);
}
.faq-list .accordion-content{
  padding:0 24px 22px 56px;
  border:none;
  background:transparent;
  color:var(--ink-500);
  font-size:16px;
  line-height:1.85;
}
.faq-list .accordion-content p{padding-left:14px;border-left:3px solid var(--accent-600);}
.faq-foot{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  border:1px dashed var(--line);
  border-radius:var(--r-md);
  background:var(--bg-alt);
  font-size:15.5px;
  color:var(--ink-500);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark-bg);
  color:var(--dark-muted);
  padding-top:72px;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;}
.footer-brand .brand-name{color:#fff;font-size:19px;font-weight:800;}
.footer-about{
  margin-top:18px;
  max-width:320px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--dark-muted);
}
.footer-social{display:flex;gap:10px;margin-top:22px;}
.footer-social a{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  color:var(--dark-muted);
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.footer-social a:hover{
  color:#fff;
  border-color:rgba(255,106,61,.6);
  background:rgba(255,106,61,.14);
}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{color:var(--dark-muted);font-size:14.5px;}
.footer-col a:hover{color:var(--brand-500);}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--dark-muted);
  margin-bottom:12px;
  line-height:1.7;
}
.footer-contact .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent-600);
  flex:0 0 auto;
  margin-top:9px;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding-top:22px;
  padding-bottom:28px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13.5px;
  color:rgba(201,192,184,.86);
}
.footer-bottom a{color:rgba(201,192,184,.86);}
.footer-bottom a:hover{color:var(--brand-500);}
.footer-bottom .sep{opacity:.45;margin:0 8px;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .container{padding-left:24px;padding-right:24px;}
  .section{padding-top:64px;padding-bottom:64px;}
  .split-block{gap:36px;}
}
@media screen and (max-width:1023px){
  .header-cta .btn-ghost-line{display:none;}
  .split-block,
  .split-block.is-reversed{grid-template-columns:1fr;gap:26px;}
  .split-block.is-reversed .split-media{order:0;}
  .split-block.is-reversed .split-text{order:0;}
  .split-block + .split-block{margin-top:56px;}
  .cta-inner{grid-template-columns:1fr;}
  .steps-row{grid-template-columns:repeat(2,1fr);}
  .step-item::after{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media screen and (max-width:899px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{min-height:60px;}
  .cat-hero-inner{grid-template-columns:1fr;gap:26px;align-items:start;}
  .cat-hero-badge{align-self:flex-start;}
  .metric-item{border-left:none;padding:14px 0;}
}
@media screen and (max-width:639px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding-top:48px;padding-bottom:48px;}
  body{font-size:16px;}
  .steps-row{grid-template-columns:1fr;}
  .metric-item{padding:16px 0;border-top:1px solid rgba(255,255,255,.12);}
  .metric-item:first-child{border-top:none;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .faq-list .accordion-title{padding:16px 18px;font-size:16px;gap:12px;}
  .faq-list .accordion-content{padding:0 18px 20px 46px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:52px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
/* ============================================================
   设计令牌
   ============================================================ */
:root{
  --brand-600:#E8542F;
  --brand-500:#FF6A3D;
  --brand-100:#FFE6DC;
  --accent-600:#0E8C7F;
  --accent-100:#DFF3EF;
  --signal-400:#FFC53D;
  --ink-900:#17120F;
  --ink-700:#3A322C;
  --ink-500:#6B615A;
  --ink-300:#A79D95;
  --bg:#FBF7F2;
  --bg-alt:#F3ECE3;
  --line:#E9E2D9;
  --dark-bg:#17120F;
  --dark-text:#FBF7F2;
  --dark-muted:#C9C0B8;
  --ok:#1F9D55;
  --warn:#E8542F;

  --r-lg:22px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;

  --sh-1:0 4px 12px rgba(23,18,15,.06);
  --sh-2:0 10px 24px rgba(23,18,15,.08);
  --sh-3:0 18px 44px rgba(23,18,15,.12);

  --container:1200px;
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ============================================================
   Reset / Base
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s var(--ease);}
a:hover,a:focus{color:var(--accent-600);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,h6{
  margin:0 0 16px;
  color:var(--ink-900);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.01em;
}
p{margin:0 0 16px;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============================================================
   容器与栅格（覆盖 Foundation 默认）
   ============================================================ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.row{max-width:none;margin-left:-15px;margin-right:-15px;}
.row .column{padding-left:15px;padding-right:15px;}

.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--alt{background:var(--bg-alt);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{margin-bottom:8px;}
.section-head .section-note{color:var(--ink-500);font-size:14px;margin:0;max-width:520px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--brand-600);text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-600);border-radius:2px;}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;white-space:nowrap;
  text-decoration:none;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease),
             box-shadow .18s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--accent-600);outline-offset:2px;}
.btn-primary{
  background:var(--brand-600);color:#fff;box-shadow:0 4px 12px rgba(232,84,47,.24);
}
.btn-primary:hover{
  background:#D8481F;color:#fff;transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(232,84,47,.3);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(232,84,47,.24);}
.btn-outline{
  background:transparent;color:var(--brand-600);border-color:rgba(232,84,47,.5);
}
.btn-outline:hover{background:rgba(232,84,47,.08);color:var(--brand-600);border-color:var(--brand-600);}
.btn-outline-light{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.6);
}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}
.btn-accent{
  background:var(--accent-600);color:#fff;box-shadow:0 4px 12px rgba(14,140,127,.24);
}
.btn-accent:hover{background:#0B7A6E;color:#fff;transform:translateY(-2px);}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px;}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-ghost{
  background:transparent;color:var(--ink-700);border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-100);}

/* ============================================================
   徽章 / 标签
   ============================================================ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;line-height:1.4;
  background:var(--accent-100);color:#0A6B61;
}
.badge-signal{background:var(--signal-400);color:#5A3B00;}
.badge-brand{background:var(--brand-100);color:#B23814;}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--ink-500);}
.badge .num{font-weight:700;}

/* ============================================================
   顶部导航
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(251,247,242,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;gap:28px;height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);}
.brand:hover{color:var(--ink-900);}
.brand-mark{display:inline-flex;width:36px;height:36px;flex:0 0 auto;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{
  position:relative;padding:6px 0;
  font-size:15px;font-weight:600;color:var(--ink-700);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand-600);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-600);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-600);}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active::before{
  content:"";position:absolute;right:-12px;top:50%;
  width:5px;height:5px;border-radius:50%;background:var(--brand-600);
  transform:translateY(-50%);
}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-actions .btn{min-height:44px;padding:0 22px;}

.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,15,.5);z-index:130;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:140;
  background:var(--bg);display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .26s var(--ease);
  box-shadow:var(--sh-3);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;padding:0 18px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:#fff;cursor:pointer;color:var(--ink-700);font-size:18px;line-height:1;
}
.drawer-links{padding:12px 18px;flex:1 1 auto;overflow-y:auto;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;font-size:16px;font-weight:600;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--brand-600);}
.drawer-foot{padding:16px 18px 22px;border-top:1px solid var(--line);}

/* ============================================================
   Hero（侧栏式）
   ============================================================ */
.hero{position:relative;overflow:hidden;background:var(--dark-bg);}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(135deg,
    rgba(23,18,15,.92) 0%,
    rgba(232,84,47,.78) 46%,
    rgba(14,140,127,.46) 100%);
}
.hero-veil::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.5) 0 1px,transparent 1px 14px);
  opacity:.06;
}
.hero-inner{position:relative;z-index:2;padding:76px 0 72px;}
.hero-copy{color:#fff;}
.hero-copy .eyebrow{color:var(--signal-400);}
.hero-copy .eyebrow::before{background:var(--signal-400);}
.hero h1{
  color:#fff;
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.2;font-weight:800;letter-spacing:-.01em;
  margin-bottom:18px;max-width:15em;
}
.hero-sub{
  font-size:17px;color:rgba(255,255,255,.88);
  max-width:34em;margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;}

.hero-side{display:flex;flex-direction:column;gap:14px;justify-content:center;}
.stat-card{
  background:rgba(251,247,242,.96);
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--r-lg);
  padding:20px 24px;
  box-shadow:var(--sh-2);
  display:flex;align-items:baseline;gap:14px;
}
.stat-card .stat-num{
  font-size:34px;font-weight:800;color:var(--brand-600);
  line-height:1;font-variant-numeric:tabular-nums;
}
.stat-card .stat-label{font-size:14px;color:var(--ink-500);line-height:1.5;}
.stat-card .stat-label strong{display:block;color:var(--ink-900);font-size:15px;font-weight:700;}

/* ============================================================
   服务对比（行式列表）
   ============================================================ */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.compare-head{
  display:grid;grid-template-columns:1.4fr 2fr 1.3fr .9fr;
  gap:16px;padding:16px 26px;
  background:var(--bg-alt);
  font-size:13px;font-weight:700;color:var(--ink-500);
  letter-spacing:.04em;
}
.compare-row{
  display:grid;grid-template-columns:1.4fr 2fr 1.3fr .9fr;
  gap:16px;align-items:center;
  padding:20px 26px;border-top:1px solid var(--line);
  transition:background-color .18s var(--ease);
}
.compare-row:hover{background-color:var(--bg-alt);}
.compare-row .c-name{
  font-size:16px;font-weight:700;color:var(--ink-900);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.compare-row .c-scope{font-size:14.5px;color:var(--ink-700);margin:0;line-height:1.7;}
.compare-row .c-cycle{
  font-size:14px;color:var(--ink-500);
  font-variant-numeric:tabular-nums;
}
.compare-row .c-action{text-align:right;}
.compare-foot{
  padding:16px 26px;border-top:1px solid var(--line);
  background:#fff;font-size:13.5px;color:var(--ink-500);
}

/* ============================================================
   深色流程区
   ============================================================ */
.dark-band{
  background:var(--dark-bg);color:var(--dark-muted);
  position:relative;overflow:hidden;
}
.dark-band::before{
  content:"";position:absolute;top:-140px;right:-120px;width:480px;height:480px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(232,84,47,.34) 0%,transparent 68%);
}
.dark-band .container{position:relative;z-index:2;}
.dark-band h2{color:var(--dark-text);}
.dark-band .section-note{color:var(--dark-muted);}
.dark-band .eyebrow{color:var(--signal-400);}
.dark-band .eyebrow::before{background:var(--signal-400);}

.steps{display:flex;flex-direction:column;gap:6px;margin-top:8px;}
.step{
  display:grid;grid-template-columns:120px 1fr;
  gap:28px;align-items:start;
  padding:26px 0;border-top:1px solid rgba(255,255,255,.1);
}
.step:last-child{border-bottom:1px solid rgba(255,255,255,.1);}
.step-num{
  font-size:44px;font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;
  color:transparent;
  background:linear-gradient(135deg,var(--brand-500),var(--accent-600));
  -webkit-background-clip:text;background-clip:text;
}
.step-body h3{color:var(--dark-text);font-size:20px;margin-bottom:8px;}
.step-body p{margin:0;color:var(--dark-muted);font-size:15px;line-height:1.8;max-width:56em;}

/* ============================================================
   横向滚动配图卡带
   ============================================================ */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:8px;}
.rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-card{
  flex:0 0 300px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rail-card:hover{box-shadow:var(--sh-2);border-color:rgba(232,84,47,.28);}
.rail-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-alt);}
.rail-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.rail-card:hover .rail-media img{transform:scale(1.04);}
.rail-media .badge{position:absolute;top:12px;left:12px;}
.rail-body{padding:18px 20px 22px;}
.rail-body h3{font-size:17px;margin-bottom:6px;}
.rail-body p{margin:0;font-size:14px;color:var(--ink-500);line-height:1.75;}

/* ============================================================
   FAQ（覆盖 Foundation Accordion）
   ============================================================ */
.faq-accordion{margin:0;border:0;background:transparent;}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:#fff;margin-bottom:12px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:rgba(232,84,47,.28);box-shadow:var(--sh-1);}
.faq-accordion .accordion-title{
  display:flex;align-items:center;gap:16px;
  padding:20px 24px;
  color:var(--ink-900);font-size:16px;font-weight:700;line-height:1.5;
  background:transparent;border:0;
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus{color:var(--brand-600);background:transparent;}
.faq-index{
  font-variant-numeric:tabular-nums;font-weight:700;
  color:var(--brand-600);font-size:14px;flex:0 0 auto;
}
.faq-q{flex:1 1 auto;}
.faq-arrow{
  flex:0 0 auto;width:10px;height:10px;
  border-right:2px solid var(--ink-300);border-bottom:2px solid var(--ink-300);
  transform:rotate(45deg);transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq-accordion .accordion-title[aria-expanded="true"] .faq-arrow{
  transform:rotate(-135deg);border-color:var(--brand-600);
}
.faq-accordion .accordion-content{
  padding:0 24px 22px 62px;
  color:var(--ink-700);font-size:15px;line-height:1.85;
  border-top:0;
}
.faq-accordion .accordion-content p{margin:0;}
.faq-accordion .accordion-content p + p{margin-top:10px;}
.faq-note{
  margin-top:22px;font-size:14px;color:var(--ink-500);
}
.faq-note a{font-weight:600;}

/* ============================================================
   咨询表单 / CTA 带
   ============================================================ */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark-bg);
  color:var(--dark-text);
}
.cta-band .band-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
}
.cta-band .band-veil{
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(232,84,47,.92) 0%,rgba(14,140,127,.86) 100%);
}
.cta-band .band-veil::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.5) 0 1px,transparent 1px 14px);
  opacity:.06;
}
.cta-band .container{position:relative;z-index:2;}
.cta-band h2{color:#fff;}
.cta-band .cta-lead{color:rgba(255,255,255,.9);font-size:16px;max-width:34em;}
.cta-points{margin:24px 0 28px;}
.cta-points li{
  position:relative;padding-left:26px;margin-bottom:12px;
  color:rgba(255,255,255,.94);font-size:15px;line-height:1.7;
}
.cta-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:12px;height:12px;border-radius:3px;
  background:var(--signal-400);
}
.form-card{
  background:#fff;border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-3);
  color:var(--ink-700);
}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .form-hint{font-size:13.5px;color:var(--ink-500);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{
  display:block;font-size:13.5px;font-weight:600;
  color:var(--ink-700);margin-bottom:8px;
}
.field input[type="text"],
.field input[type="tel"],
.field input[type="date"],
.field input[type="number"],
.field select,
.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;color:var(--ink-900);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-500) 50%),linear-gradient(135deg,var(--ink-500) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-600);outline:none;box-shadow:none;
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.check-line{display:flex;align-items:flex-start;gap:10px;margin:18px 0 20px;}
.check-line input{width:20px;height:20px;margin-top:2px;accent-color:var(--brand-600);}
.check-line label{font-size:13.5px;color:var(--ink-500);line-height:1.65;margin:0;font-weight:400;}
.check-line a{color:var(--brand-600);}
.form-status{margin-top:14px;font-size:13.5px;color:var(--ink-500);}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:var(--dark-bg);color:var(--dark-muted);
  padding:72px 0 0;font-size:14.5px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.3fr;
  gap:40px;padding-bottom:52px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{color:var(--dark-text);font-size:19px;font-weight:800;}
.footer-about{color:var(--dark-muted);font-size:14px;line-height:1.8;max-width:32em;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.16);color:var(--dark-text);
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.footer-social a:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}
.footer-col h4{
  color:var(--dark-text);font-size:15px;font-weight:700;
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{color:var(--dark-muted);font-size:14px;}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{
  color:var(--dark-muted);font-size:14px;margin-bottom:11px;
  display:flex;gap:10px;align-items:flex-start;line-height:1.7;
}
.footer-contact .num{color:var(--dark-text);font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(201,192,184,.86);
}
.footer-bottom a{color:rgba(201,192,184,.86);}
.footer-bottom a:hover{color:#fff;}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
}
@media (max-width:1023px){
  .main-nav{gap:20px;}
  .nav-actions .btn-outline{display:none;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .main-nav,.nav-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .hero-inner{padding:56px 0 56px;}
  .hero-side{margin-top:34px;}
  .stat-card{padding:18px 20px;}
  .compare-head{display:none;}
  .compare-row{
    grid-template-columns:1fr;gap:8px;padding:22px 20px;
  }
  .compare-row .c-action{text-align:left;margin-top:6px;}
  .compare-row::before{
    content:attr(data-label);
    grid-column:1;
  }
  .step{grid-template-columns:1fr;gap:10px;padding:22px 0;}
  .step-num{font-size:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:639px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;flex-direction:column;align-items:flex-start;gap:10px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{width:100%;}
  .field-row{grid-template-columns:1fr;}
  .form-card{padding:22px 18px;}
  .rail-card{flex:0 0 82vw;}
  .faq-accordion .accordion-title{padding:16px 18px;gap:12px;font-size:15px;}
  .faq-accordion .accordion-content{padding:0 18px 18px 44px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
}