/* roulang page: index */
:root{
  --ink:#16181C;
  --ink-soft:#3A3F46;
  --muted:#6B7078;
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --line:#DDD8CF;
  --accent:#E8582B;
  --accent-deep:#B33E17;
  --deep:#10403A;
  --ph:#E9E5DD;
  --radius-s:6px;
  --radius-m:12px;
  --shadow:0 1px 2px rgba(22,24,28,.05),0 14px 34px -20px rgba(22,24,28,.22);
  --shadow-hover:0 20px 44px -22px rgba(22,24,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--accent)}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.mono{font-family:var(--mono);letter-spacing:.04em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
::selection{background:rgba(232,88,43,.18)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-s);border:1px solid transparent;
  font-size:.9375rem;font-weight:700;line-height:1.2;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{padding:10px 18px;font-size:.875rem}
.btn-block{width:100%}
.link-text{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.9375rem;border-bottom:1px solid currentColor;padding-bottom:2px}
.link-text:hover{color:var(--accent)}

/* ---------- 徽标 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:4px;
  background:rgba(232,88,43,.12);color:var(--accent-deep);
  font-size:.75rem;font-weight:700;letter-spacing:.04em;line-height:1.5;
  white-space:nowrap;
}
.badge-plain{background:rgba(22,24,28,.06);color:var(--ink-soft)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.9s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(232,88,43,.5)}70%{box-shadow:0 0 0 8px rgba(232,88,43,0)}100%{box-shadow:0 0 0 0 rgba(232,88,43,0)}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,238,.96);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,243,238,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 0 rgba(221,216,207,.9);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;min-width:0}
.logo-mark{width:20px;height:20px;background:var(--accent);flex:0 0 20px}
.logo-word{font-size:1.125rem;font-weight:800;letter-spacing:-.02em;line-height:1;color:var(--ink);text-transform:lowercase}
.logo-suffix{
  padding-left:10px;border-left:1px solid var(--line);
  font-size:.8125rem;font-weight:400;color:var(--ink-soft);
  letter-spacing:0;line-height:1;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;display:inline-block;padding:6px 0;font-size:.9375rem;color:var(--ink-soft);white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:var(--radius-s);
  background:var(--paper-2);color:var(--ink);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.overlay{
  position:fixed;inset:0;background:rgba(22,24,28,.44);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.overlay.is-open{opacity:1;pointer-events:auto}
.off-canvas{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:90;
  background:var(--paper-2);padding:88px 24px 32px;overflow-y:auto;
  transform:translateX(100%);transition:transform .32s var(--ease);
  box-shadow:-24px 0 48px -32px rgba(22,24,28,.5);
}
.off-canvas.is-open{transform:translateX(0)}
.off-canvas .oc-title{font-size:.75rem;letter-spacing:.1em;color:var(--muted);margin-bottom:8px}
.off-canvas a{
  display:block;font-size:1.125rem;line-height:1.6;padding:16px 0;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.off-canvas a:hover{color:var(--accent)}
.off-canvas .oc-close{
  position:absolute;top:24px;right:24px;width:36px;height:36px;border:1px solid var(--line);
  border-radius:var(--radius-s);background:transparent;color:var(--ink);font-size:1.125rem;line-height:1;
}
.oc-cta{
  margin-top:24px;display:flex !important;justify-content:center;align-items:center;
  background:var(--accent);color:#fff !important;border:0;border-radius:var(--radius-s);
  padding:14px 20px !important;font-weight:700;
}

/* ---------- Hero ---------- */
.hero{padding:76px 0 0;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:62fr 38fr;gap:48px;align-items:start}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border:1px solid var(--line);border-radius:999px;
  background:var(--paper-2);font-size:.75rem;letter-spacing:.1em;color:var(--ink-soft);
  font-weight:700;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(2.2rem,4.8vw,4rem);
  line-height:1.1;font-weight:800;letter-spacing:-.03em;
  margin-bottom:22px;color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{
  font-size:1.0625rem;line-height:1.8;color:var(--ink-soft);
  max-width:46ch;margin-bottom:32px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:0}
.hero-media{position:relative;margin-bottom:36px}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-m);background:var(--ph);
  box-shadow:var(--shadow);
}
.hero-float{
  position:absolute;left:0;bottom:-24px;
  width:min(290px,92%);
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:16px 18px;box-shadow:var(--shadow);
}
.hero-float .badge{margin-bottom:10px}
.hero-float p{font-size:.9375rem;line-height:1.6;font-weight:700;color:var(--ink);margin:0}
.hero-float small{display:block;margin-top:6px;font-size:.75rem;color:var(--muted);font-family:var(--mono);letter-spacing:.04em}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);margin-top:64px;padding:28px 0 0;
}
.stat{padding-right:24px}
.stat + .stat{padding-left:32px;border-left:1px solid var(--line)}
.stat strong{
  display:block;font-family:var(--mono);font-size:1.75rem;line-height:1.1;
  letter-spacing:.02em;color:var(--ink);margin-bottom:8px;font-weight:700;
}
.stat span{display:block;font-size:.8125rem;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}

/* ---------- 价值主张条 ---------- */
.value-bar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2)}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.value-item{padding:36px 28px}
.value-item + .value-item{border-left:1px solid var(--line)}
.value-item h3{font-size:1rem;font-weight:800;margin-bottom:8px;color:var(--ink)}
.value-item p{font-size:.875rem;line-height:1.7;color:var(--muted)}

/* ---------- 板块标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.section-eyebrow{
  display:block;font-family:var(--mono);font-size:.75rem;letter-spacing:.16em;
  color:var(--accent);margin-bottom:12px;text-transform:uppercase;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:800;letter-spacing:-.02em}
.section-head p{margin-top:12px;color:var(--muted);font-size:.9375rem;max-width:56ch}

/* ---------- 编号行式列表 ---------- */
.cap-list{border-top:1px solid var(--line)}
.cap-row{
  display:grid;grid-template-columns:88px 1fr auto;gap:24px;align-items:center;
  padding:28px 8px;border-bottom:1px solid var(--line);
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.cap-row:hover{transform:translateX(6px);background:rgba(255,255,255,.6)}
.cap-num{
  font-family:var(--mono);font-size:1.5rem;color:var(--accent);font-weight:700;
  transition:transform .24s var(--ease);display:inline-block;
}
.cap-row:hover .cap-num{transform:scale(1.06)}
.cap-row h3{font-size:1.25rem;font-weight:800;margin-bottom:6px;line-height:1.3}
.cap-row p{font-size:.9375rem;color:var(--muted);line-height:1.75;max-width:62ch}
.cap-arrow{font-family:var(--mono);color:var(--muted);transition:color .22s var(--ease),transform .22s var(--ease)}
.cap-row:hover .cap-arrow{color:var(--accent);transform:translateX(4px)}

/* ---------- 场景交错 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:48px 0}
.scene + .scene{border-top:1px solid var(--line)}
.scene:nth-child(even) .scene-media{order:2}
.scene-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-m);
  background:var(--ph);box-shadow:var(--shadow);
}
.scene-body h3{font-size:1.375rem;font-weight:800;margin-bottom:16px;line-height:1.3}
.scene-body > p{color:var(--ink-soft);font-size:1rem;margin-bottom:20px;max-width:48ch}
.scene-list{display:flex;flex-direction:column;gap:12px}
.scene-list li{position:relative;padding-left:22px;font-size:.9375rem;color:var(--ink-soft);line-height:1.7}
.scene-list li::before{content:"";position:absolute;left:0;top:.85em;width:12px;height:1px;background:var(--accent)}

/* ---------- 最新信息 ---------- */
.news-wrap{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:180px 1fr 32px;gap:32px;align-items:center;
  min-height:88px;padding:26px 8px;border-bottom:1px solid var(--line);
  color:inherit;transition:background .22s var(--ease);
}
.news-row:hover{background:rgba(255,255,255,.7);color:inherit}
.news-meta{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.news-date{font-family:var(--mono);font-size:.8125rem;color:var(--muted);letter-spacing:.04em}
.news-title{
  font-size:1.0625rem;font-weight:700;line-height:1.45;margin-bottom:8px;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .22s var(--ease);
}
.news-row:hover .news-title{color:var(--accent)}
.news-desc{
  font-size:.875rem;color:var(--muted);line-height:1.7;max-width:70ch;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-arrow{font-family:var(--mono);color:var(--muted);transition:transform .22s var(--ease),color .22s var(--ease)}
.news-row:hover .news-arrow{color:var(--accent);transform:translateX(5px)}
.news-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;border:1px dashed var(--line);border-radius:var(--radius-m);
  text-align:center;color:var(--muted);background:rgba(255,255,255,.5);
}
.news-empty .ico{
  width:34px;height:34px;border:2px solid var(--line);border-radius:50%;position:relative;
}
.news-empty .ico::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;background:var(--line);transform:translate(-50%,-50%)}
.news-empty p{font-size:.9375rem;margin:0}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
.case-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:32px 28px;display:flex;flex-direction:column;justify-content:space-between;
  min-height:240px;box-shadow:var(--shadow);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.case-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.case-card strong{
  display:block;font-family:var(--mono);font-size:3rem;line-height:1;font-weight:700;
  color:var(--ink);letter-spacing:-.01em;margin-bottom:14px;
}
.case-card--lead strong{font-size:4rem;color:var(--accent-deep)}
.case-card h3{font-size:1.0625rem;font-weight:800;margin-bottom:10px;line-height:1.4}
.case-card p{font-size:.875rem;color:var(--muted);line-height:1.75}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:32px 28px;display:flex;flex-direction:column;gap:20px;box-shadow:var(--shadow);
}
.price-card--hot{
  background:var(--deep);color:#E8E4DB;border-color:var(--accent);
  transform:translateY(-12px);box-shadow:0 24px 52px -28px rgba(16,64,58,.8);
}
.price-card--hot h3,.price-card--hot .price-amount{color:#fff}
.price-card--hot .price-item{border-color:rgba(232,228,219,.22);color:#D9D5CB}
.price-card--hot .price-desc{color:#C8C4BA}
.price-tag{font-family:var(--mono);font-size:.75rem;letter-spacing:.12em;color:var(--accent);text-transform:uppercase}
.price-card h3{font-size:1.25rem;font-weight:800;line-height:1.3}
.price-desc{font-size:.875rem;color:var(--muted);line-height:1.7;min-height:48px}
.price-amount{font-family:var(--mono);font-size:1.5rem;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.price-list{display:flex;flex-direction:column;gap:0;margin:0}
.price-item{
  font-family:var(--mono);font-size:.8125rem;letter-spacing:.03em;color:var(--ink-soft);
  padding:12px 0;border-top:1px solid var(--line);line-height:1.6;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
ul.accordion{background:transparent;border:0;border-top:1px solid var(--line);margin:0;padding:0;list-style:none}
ul.accordion li.accordion-item{border-bottom:1px solid var(--line);background:transparent}
ul.accordion .accordion-title{
  display:flex;align-items:center;gap:20px;height:64px;padding:0;
  background:transparent;border:0;color:var(--ink);
  font-size:1.0625rem;font-weight:700;line-height:1.4;
  transition:color .22s var(--ease);
}
ul.accordion .accordion-title::before{display:none !important;content:none !important}
ul.accordion .accordion-title:hover{color:var(--accent)}
.faq-num{font-family:var(--mono);font-size:.875rem;color:var(--accent);flex:0 0 34px;font-weight:700}
.faq-q{flex:1 1 auto;min-width:0}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;transition:transform .3s var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:0;right:0;top:50%;height:2px;background:var(--ink);
  transform:translateY(-1px);transition:background .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::after{transform:rotate(90deg) translateY(-1px)}
.accordion-item.is-active .faq-icon{transform:rotate(180deg)}
.accordion-item.is-active .faq-icon::after{opacity:0}
.accordion-item.is-active .accordion-title{color:var(--accent-deep)}
ul.accordion .accordion-content{
  padding:0 0 26px 54px !important;border:0;background:transparent;
  color:var(--ink-soft);font-size:.9375rem;line-height:1.9;max-width:68ch;
}
.accordion-item.is-active > .accordion-content{display:block}

/* ---------- 结尾 CTA ---------- */
.cta-band{background:var(--deep);color:#E8E4DB;padding:88px 0;border-radius:0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:48px}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:800;color:#fff;margin-bottom:12px}
.cta-inner p{font-size:1rem;color:#C8C4BA;max-width:52ch}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#E8E4DB;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand .logo-word{color:#fff}
.footer-brand .logo-suffix{color:#B9C4BF;border-left-color:rgba(232,228,219,.24)}
.footer-brand p{margin-top:18px;font-size:.875rem;line-height:1.8;color:#B9C4BF;max-width:34ch}
.footer-col h4{font-size:.75rem;letter-spacing:.12em;color:#8FA39C;text-transform:uppercase;margin-bottom:18px;font-weight:700}
.footer-col a,.footer-col li{display:block;font-size:.9375rem;color:#E8E4DB;line-height:2;transition:color .22s var(--ease),transform .22s var(--ease)}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-note{font-size:.875rem;color:#B9C4BF;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(232,228,219,.16);padding:22px 0;
  font-size:.8125rem;color:#9FB0AA;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom a{color:#9FB0AA}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{margin-bottom:20px}
  .scene{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .scene:nth-child(even) .scene-media{order:0}
  .case-grid{grid-template-columns:1fr 1fr}
  .case-card--lead{grid-column:span 2}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card--hot{transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .news-row{grid-template-columns:150px 1fr 24px;gap:24px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .hero{padding:44px 0 0}
  .hero-stats{grid-template-columns:1fr;margin-top:44px;padding-top:20px}
  .stat{padding:18px 0}
  .stat + .stat{padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .value-grid{grid-template-columns:1fr}
  .value-item + .value-item{border-left:0;border-top:1px solid var(--line)}
  .value-item{padding:24px 0}
  .cap-row{grid-template-columns:56px 1fr;gap:16px;padding:22px 0}
  .cap-arrow{display:none}
  .cap-num{font-size:1.25rem}
  .case-grid{grid-template-columns:1fr}
  .case-card--lead{grid-column:span 1}
  .case-card strong,.case-card--lead strong{font-size:2.5rem}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .news-row{grid-template-columns:1fr;gap:12px;padding:22px 0}
  .news-meta{flex-direction:row;align-items:center;gap:12px}
  .news-arrow{display:none}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
  .cta-band{padding:60px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  ul.accordion .accordion-content{padding-left:0 !important}
  .faq-num{flex-basis:28px}
}
@media (max-width:520px){
  .logo-suffix{display:none}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-float{position:static;width:100%;margin-top:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#16181C;
  --ink-soft:#3A3F46;
  --muted:#6B7078;
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --line:#DDD8CF;
  --accent:#E8582B;
  --accent-deep:#B33E17;
  --deep:#10403A;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --radius:12px;
  --radius-sm:6px;
  --shadow:0 1px 2px rgba(22,24,28,.05),0 14px 34px -20px rgba(22,24,28,.22);
  --shadow-hover:0 20px 44px -22px rgba(22,24,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --space-lg:96px;
  --space-md:72px;
  --space-sm:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.mono{font-family:var(--mono);letter-spacing:.04em;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,243,238,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(22,24,28,.04);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:20px;height:20px;
  background:var(--accent);
  border-radius:2px;
  flex-shrink:0;
}
.logo-word{
  font-weight:800;
  font-size:1.25rem;
  letter-spacing:-.02em;
  line-height:1;
  text-transform:lowercase;
}
.logo-suffix{
  font-weight:400;
  font-size:.8125rem;
  color:var(--ink-soft);
  padding-left:10px;
  border-left:1px solid var(--line);
  line-height:1;
  letter-spacing:.02em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  font-size:.9375rem;
  color:var(--ink-soft);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-cta{margin-left:8px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  font-size:.9375rem;
  font-weight:700;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-sm{padding:10px 18px;font-size:.875rem;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:0;
  cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  background:var(--ink);
  border-radius:2px;
}
.nav-toggle span:nth-child(1){top:14px;}
.nav-toggle span:nth-child(2){top:21px;}
.nav-toggle span:nth-child(3){top:28px;}

/* ---------- Off canvas ---------- */
.off-canvas.position-right{width:84vw;max-width:320px;background:var(--paper-2);}
.off-canvas .mobile-nav{padding:24px 20px;display:flex;flex-direction:column;gap:0;}
.off-canvas .mobile-nav .mobile-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;margin-bottom:8px;border-bottom:1px solid var(--line);
}
.off-canvas .mobile-nav a.m-link{
  display:block;
  font-size:1.125rem;
  line-height:1.6;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-soft);
}
.off-canvas .mobile-nav a.m-link.is-active{color:var(--accent);font-weight:700;}
.off-canvas .mobile-nav .m-cta{margin-top:22px;width:100%;}
.off-canvas .close-button{color:var(--muted);}

/* ---------- Breadcrumb ---------- */
.article-top{padding:32px 0 0;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  color:var(--muted);
}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:48ch;}

/* ---------- Article head ---------- */
.article-head{padding:28px 0 40px;border-bottom:1px solid var(--line);}
.article-head .badge{
  display:inline-block;
  font-size:.8125rem;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--accent);
  background:rgba(232,88,43,.12);
  padding:6px 12px;
  border-radius:var(--radius-sm);
  margin-bottom:20px;
}
.article-head h1{
  font-size:clamp(1.8rem,3.4vw,2.75rem);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.02em;
  max-width:22ch;
  overflow-wrap:break-word;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:22px;
  font-size:.8125rem;
  color:var(--muted);
}
.article-meta .date{font-family:var(--mono);letter-spacing:.04em;color:var(--ink-soft);}
.article-meta .dot{color:var(--line);}

/* ---------- Article layout ---------- */
.article-main{padding:56px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:56px;
}
.article-body{
  max-width:760px;
  margin:0 auto;
  width:100%;
  color:#2A2E34;
  font-size:1.0625rem;
  line-height:1.9;
  overflow-wrap:break-word;
}
.article-body p{margin-bottom:1.25em;}
.article-body h2{
  font-size:clamp(1.35rem,2.2vw,1.6rem);
  line-height:1.3;
  font-weight:800;
  margin:40px 0 18px;
  padding-left:14px;
  border-left:3px solid var(--accent);
  color:var(--ink);
}
.article-body h3{
  font-size:1.25rem;
  font-weight:700;
  line-height:1.4;
  margin:32px 0 14px;
  color:var(--ink);
}
.article-body h4{font-size:1.0625rem;font-weight:700;margin:24px 0 12px;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.25em 1.25em;padding:0;}
.article-body ul{list-style:none;}
.article-body ul li{position:relative;padding-left:18px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.85em;
  width:10px;height:2px;
  background:var(--accent);
  border-radius:1px;
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:10px;padding-left:4px;}
.article-body ol li::marker{color:var(--accent);font-family:var(--mono);font-weight:700;}
.article-body blockquote{
  margin:28px 0;
  padding:20px 24px;
  background:#F0EDE6;
  border-left:3px solid var(--accent);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-soft);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--radius);
  margin:24px 0;
  width:100%;
  height:auto;
}
.article-body a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:.9375rem;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:12px 14px;
  text-align:left;
  vertical-align:top;
}
.article-body th{background:#F0EDE6;font-weight:700;color:var(--ink);}
.article-body code{
  font-family:var(--mono);
  font-size:.9em;
  background:#F0EDE6;
  padding:2px 6px;
  border-radius:4px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- Empty state ---------- */
.empty-box{
  max-width:760px;
  margin:0 auto;
  border:1px dashed var(--line);
  border-radius:var(--radius);
  padding:64px 24px;
  text-align:center;
  background:var(--paper-2);
}
.empty-box .empty-icon{
  width:44px;height:44px;
  margin:0 auto 18px;
  border:2px dashed var(--line);
  border-radius:50%;
}
.empty-box h2{font-size:1.25rem;font-weight:800;margin-bottom:10px;}
.empty-box p{color:var(--muted);font-size:.9375rem;margin-bottom:22px;}

/* ---------- Sidebar ---------- */
.article-side{display:none;}
.side-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  margin-bottom:20px;
}
.side-card h3{
  font-size:.8125rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
  margin-bottom:14px;
}
.side-card .side-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
  font-size:.9375rem;
  color:var(--ink-soft);
}
.side-card .side-link:last-child{border-bottom:0;padding-bottom:0;}
.side-card .side-link:hover{color:var(--accent);}
.side-card .side-link .arrow{color:var(--line);transition:transform .22s var(--ease),color .22s var(--ease);}
.side-card .side-link:hover .arrow{color:var(--accent);transform:translateX(3px);}
.side-card p{font-size:.875rem;color:var(--muted);line-height:1.8;}

/* ---------- Tags + back ---------- */
.article-foot{
  max-width:760px;
  margin:48px auto 0;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:7px 14px;
  font-size:.8125rem;
  color:var(--ink-soft);
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
}
.tag:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9375rem;
  font-weight:700;
  color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
}
.back-link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- Related ---------- */
.section{padding:var(--space-md) 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.02em;
}
.section-head .more{
  font-size:.875rem;
  font-weight:700;
  color:var(--ink-soft);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  white-space:nowrap;
}
.section-head .more:hover{color:var(--accent);border-color:var(--accent);}
.related-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
.related-card{
  display:flex;
  gap:16px;
  align-items:center;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#CFC8BC;}
.related-card img{
  width:80px;height:60px;
  object-fit:cover;
  border-radius:8px;
  flex-shrink:0;
  background:#E9E5DD;
}
.related-card h3{
  font-size:1rem;
  line-height:1.45;
  font-weight:700;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-card .rc-meta{
  font-family:var(--mono);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--muted);
  margin-top:6px;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
ul.accordion{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  margin:0;
}
ul.accordion li.accordion-item{border-bottom:1px solid var(--line);background:transparent;}
ul.accordion .accordion-title{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
  padding:14px 2px;
  border:0;
  font-size:1.0625rem;
  font-weight:700;
  color:var(--ink);
  background:transparent;
  transition:color .22s var(--ease);
}
ul.accordion .accordion-title:hover{background:transparent;color:var(--accent);}
ul.accordion .accordion-title::before{
  content:"+";
  order:2;
  margin-left:auto;
  font-family:var(--mono);
  font-size:1.25rem;
  font-weight:400;
  color:var(--accent);
  line-height:1;
  transition:transform .24s var(--ease);
}
ul.accordion .accordion-item.is-active .accordion-title::before{transform:rotate(180deg);}
ul.accordion .accordion-title .faq-num{
  font-family:var(--mono);
  font-size:.875rem;
  letter-spacing:.06em;
  color:var(--accent);
  flex-shrink:0;
  min-width:26px;
}
ul.accordion .accordion-content{
  padding:0 2px 22px 44px;
  border:0;
  color:var(--ink-soft);
  font-size:.9375rem;
  line-height:1.9;
  max-width:68ch;
}
ul.accordion .accordion-content p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{background:var(--deep);color:#E8E4DB;border-radius:0;}
.cta-inner{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  padding:64px 0;
  align-items:center;
}
.cta-inner h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
}
.cta-inner p{margin-top:14px;color:#C9CFC7;max-width:52ch;font-size:1rem;}
.cta-inner .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-inner .btn-primary:hover{background:#fff;color:var(--deep);}
.cta-inner .btn-outline{background:transparent;border-color:rgba(232,228,219,.5);color:#E8E4DB;}
.cta-inner .btn-outline:hover{background:rgba(255,255,255,.1);border-color:#E8E4DB;}

/* ---------- Footer ---------- */
.site-footer{background:var(--deep);color:#E8E4DB;padding:72px 0 0;margin-top:0;}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-mark{background:var(--accent);}
.footer-brand .logo-word{color:#fff;}
.footer-brand .logo-suffix{color:#C9CFC7;border-left-color:rgba(232,228,219,.28);}
.footer-brand p{color:#B9C1B8;font-size:.9375rem;line-height:1.85;max-width:36ch;}
.footer-col h4{
  font-size:.8125rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:#9FB0A6;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  font-size:.9375rem;
  color:#E8E4DB;
  padding:6px 0;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-note{font-size:.875rem;color:#B9C1B8;line-height:1.85;max-width:34ch;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(232,228,219,.18);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:.8125rem;
  color:#9FB0A6;
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);}
.reveal.is-in{opacity:1;transform:translateY(0);transition:opacity .48s var(--ease),transform .48s var(--ease);}

/* ---------- Responsive ---------- */
@media screen and (min-width:768px){
  .container{padding:0 24px;}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .related-card{flex-direction:column;align-items:flex-start;}
  .related-card img{width:100%;height:auto;aspect-ratio:16/10;}
  .cta-inner{grid-template-columns:1.4fr 1fr;padding:88px 0;}
  .cta-inner .cta-actions{justify-content:flex-end;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
}
@media screen and (min-width:1024px){
  .article-main{padding:64px 0 0;}
  .article-layout{grid-template-columns:minmax(0,760px) 260px;gap:64px;justify-content:center;}
  .article-side{display:block;}
  .side-sticky{position:sticky;top:96px;}
  .section{padding:var(--space-lg) 0;}
}
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .nav-toggle{display:inline-block;}
  .header-inner{height:64px;}
}
@media screen and (max-width:767px){
  .article-head h1{max-width:100%;}
  .section{padding:var(--space-sm) 0;}
  .cta-inner{padding:56px 0;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .breadcrumb .current{max-width:26ch;}
  .article-body{font-size:1rem;}
}
@media screen and (max-width:519px){
  .container{padding:0 20px;}
  .logo-word{font-size:1.125rem;}
  .logo-suffix{font-size:.75rem;padding-left:8px;}
  ul.accordion .accordion-content{padding-left:0;}
  .cta-inner .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#16181C;
  --ink-soft:#3A3F46;
  --muted:#6B7078;
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --line:#DDD8CF;
  --accent:#E8582B;
  --accent-deep:#B33E17;
  --deep:#10403A;
  --deep-soft:#17544C;
  --error:#C0392B;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --radius-sm:6px;
  --radius-md:12px;
  --shadow-1:0 1px 2px rgba(22,24,28,.05),0 14px 34px -20px rgba(22,24,28,.22);
  --shadow-2:0 20px 44px -22px rgba(22,24,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
  --space-xl:96px;
  --space-lg:72px;
  --space-md:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,243,238,.98);
  border-bottom:1px solid transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,243,238,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(22,24,28,.04);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:24px;transition:height .26s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:60px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;letter-spacing:-.02em;}
.logo-mark{width:20px;height:20px;background:var(--accent);border-radius:2px;flex:0 0 auto;}
.logo-word{font-size:1.1875rem;font-weight:800;letter-spacing:-.02em;text-transform:lowercase;}
.logo-suffix{
  font-size:.8125rem;font-weight:400;color:var(--muted);
  padding-left:10px;border-left:1px solid var(--line);line-height:1.2;
}
.logo:hover .logo-suffix{color:var(--ink-soft);}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:.9375rem;font-weight:500;color:var(--ink-soft);
  padding:6px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-cta{margin-left:8px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--radius-sm);
  padding:14px 26px;font-size:.9375rem;font-weight:700;line-height:1.2;
  cursor:pointer;transition:background .22s var(--ease),color .22s var(--ease),
    border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{padding:9px 18px;font-size:.875rem;}
.btn-arrow::after{content:"→";font-family:var(--mono);transition:transform .22s var(--ease);}
.btn-arrow:hover::after{transform:translateX(4px);}

/* ---------- 分类 Banner ---------- */
.cat-banner{
  background:var(--deep);color:#E8E4DB;position:relative;overflow:hidden;
  padding:64px 0 56px;border-radius:0;
}
.cat-banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg,rgba(16,64,58,0) 45%,rgba(232,88,43,.18) 100%);
}
.cat-banner .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:rgba(232,228,219,.7);margin-bottom:22px;}
.crumb a{color:rgba(232,228,219,.82);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{opacity:.5;}
.crumb .current{color:rgba(232,228,219,.6);}
.cat-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(232,88,43,.14);color:#FFB69B;
  border:1px solid rgba(232,88,43,.34);
  font-size:.75rem;font-weight:700;letter-spacing:.08em;
  padding:5px 12px;border-radius:var(--radius-sm);text-transform:uppercase;
}
.cat-banner h1{
  color:#fff;font-size:clamp(2rem,4vw,3.25rem);line-height:1.1;letter-spacing:-.03em;
  margin:18px 0 16px;max-width:20ch;
}
.cat-banner p{color:rgba(232,228,219,.82);max-width:56ch;font-size:1.0625rem;}
.banner-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;}
.banner-meta div{font-size:.8125rem;letter-spacing:.06em;color:rgba(232,228,219,.62);text-transform:uppercase;}
.banner-meta strong{display:block;font-family:var(--mono);font-size:1.5rem;font-weight:700;color:#fff;letter-spacing:.04em;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space-lg) 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;}
.section-head .head-note{font-size:.9375rem;color:var(--muted);max-width:52ch;margin-top:10px;}
.eyebrow{
  display:inline-block;font-family:var(--mono);font-size:.75rem;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:.9375rem;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:3px;
}
.text-link:hover{color:var(--accent);border-bottom-color:var(--accent);}

/* ---------- 双列大图卡 ---------- */
.event-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
.event-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.event-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFC8BC;}
.event-figure{position:relative;aspect-ratio:16/10;background:#E9E5DD;overflow:hidden;}
.event-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.event-card:hover .event-figure img{transform:scale(1.03);}
.event-figure .flag{
  position:absolute;top:14px;left:14px;
  background:rgba(255,255,255,.94);color:var(--ink);
  font-size:.75rem;font-weight:700;letter-spacing:.06em;
  padding:4px 10px;border-radius:var(--radius-sm);
}
.event-figure .flag.is-live{background:var(--accent);color:#fff;}
.event-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.event-body h3{font-size:1.25rem;line-height:1.35;}
.event-body p{font-size:.9375rem;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.event-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  font-family:var(--mono);font-size:.75rem;letter-spacing:.04em;color:var(--muted);
}
.event-foot .dot{width:3px;height:3px;background:var(--line);border-radius:50%;}

/* ---------- 时间节点（横向流程） ---------- */
.timeline-rail{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:36px 0;
}
.rail-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;}
.rail-item{padding:0 26px;border-left:1px solid var(--line);}
.rail-item:first-child{border-left:0;padding-left:0;}
.rail-item .num{font-family:var(--mono);font-size:1.5rem;font-weight:700;color:var(--accent);letter-spacing:.04em;}
.rail-item h4{font-size:1.0625rem;margin:8px 0 6px;font-weight:700;}
.rail-item p{font-size:.875rem;color:var(--muted);line-height:1.7;}

/* ---------- 参赛须知（两列文本） ---------- */
.notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.notice-list li{
  padding:14px 0 14px 22px;border-bottom:1px solid var(--line);
  position:relative;font-size:.9375rem;color:var(--ink-soft);line-height:1.8;
}
.notice-list li::before{
  content:"";position:absolute;left:0;top:26px;width:12px;height:1px;background:var(--accent);
}
.notice-list li strong{color:var(--ink);font-weight:700;display:block;margin-bottom:2px;font-size:1rem;}
.notice-aside{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:30px 28px;box-shadow:var(--shadow-1);
}
.notice-aside h3{font-size:1.125rem;margin-bottom:14px;}
.notice-aside p{font-size:.9375rem;color:var(--ink-soft);margin-bottom:18px;}
.mini-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:10px 0;border-bottom:1px solid var(--line);font-size:.875rem;
}
.mini-list li:last-child{border-bottom:0;}
.mini-list .k{color:var(--muted);}
.mini-list .v{font-family:var(--mono);color:var(--ink);font-weight:700;letter-spacing:.04em;}

/* ---------- 数据条 ---------- */
.stat-band{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);padding:0;overflow:hidden;}
.stat-band .xy-grid{margin:0;}
.stat-cell{padding:30px 26px;border-left:1px solid var(--line);}
.stat-cell:first-child{border-left:0;}
.stat-cell .val{font-family:var(--mono);font-size:1.75rem;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.stat-cell .lab{font-size:.8125rem;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq-block{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-md);padding:8px 28px 20px;}
.faq-block h2{font-size:clamp(1.4rem,2.2vw,1.875rem);margin:24px 0 8px;}
.faq-block .faq-sub{font-size:.9375rem;color:var(--muted);margin-bottom:16px;}
.accordion{border:0;background:transparent;margin:0;}
.accordion-item{border:0;border-top:1px solid var(--line);}
.accordion-title{
  border:0;padding:0;margin:0;font-size:1.0625rem;font-weight:700;color:var(--ink);
  line-height:1.5;
}
.accordion-title a{
  display:flex;align-items:center;gap:18px;min-height:64px;
  padding:12px 0;color:var(--ink);position:relative;transition:color .2s var(--ease);
}
.accordion-title a::before{
  content:attr(data-index);font-family:var(--mono);font-size:1rem;color:var(--accent);
  min-width:30px;font-weight:700;
}
.accordion-title a::after{
  content:"+";margin-left:auto;font-family:var(--mono);font-size:1.375rem;
  color:var(--muted);transition:transform .26s var(--ease),color .2s var(--ease);
  line-height:1;
}
.accordion-title a[aria-expanded="true"]::after{content:"−";color:var(--accent);transform:rotate(180deg);}
.accordion-title a:hover{color:var(--accent);}
.accordion-content{padding:0 0 22px 48px;border:0;background:transparent;}
.accordion-content p{max-width:68ch;font-size:.9375rem;line-height:1.9;color:var(--ink-soft);}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--deep);color:#E8E4DB;border-radius:0;padding:72px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.25rem);line-height:1.2;max-width:22ch;}
.cta-inner p{color:rgba(232,228,219,.78);margin-top:12px;max-width:48ch;font-size:.9375rem;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-band .btn-ghost{color:#E8E4DB;border-color:rgba(232,228,219,.5);}
.cta-band .btn-ghost:hover{background:#fff;border-color:#fff;color:var(--deep);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--deep);color:#E8E4DB;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{color:#fff;margin-bottom:18px;}
.footer-brand .logo-suffix{color:rgba(232,228,219,.68);border-left-color:rgba(232,228,219,.28);}
.footer-brand p{font-size:.875rem;line-height:1.85;color:rgba(232,228,219,.72);max-width:34ch;}
.footer-col h4{color:#fff;font-size:.875rem;letter-spacing:.06em;margin-bottom:16px;text-transform:uppercase;}
.footer-col a,.footer-col p{display:block;font-size:.875rem;color:rgba(232,228,219,.74);margin-bottom:10px;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-note{font-size:.8125rem !important;line-height:1.85;color:rgba(232,228,219,.6) !important;max-width:30ch;}
.footer-bottom{
  border-top:1px solid rgba(232,228,219,.18);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:.8125rem;color:rgba(232,228,219,.62);
}

/* ---------- 移动端抽屉 ---------- */
.mobile-toggle{
  display:none;align-items:center;justify-content:center;gap:8px;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:8px 12px;font-size:.875rem;font-weight:700;color:var(--ink);cursor:pointer;
}
.mobile-toggle span.bars{display:inline-block;width:16px;height:2px;background:var(--ink);position:relative;}
.mobile-toggle span.bars::before,.mobile-toggle span.bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink);
}
.mobile-toggle span.bars::before{top:-5px;}
.mobile-toggle span.bars::after{top:5px;}
.off-canvas-panel{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:120;
  background:var(--paper);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s var(--ease);
  padding:22px 22px 32px;overflow-y:auto;
}
.off-canvas-panel.is-open{transform:translateX(0);box-shadow:-20px 0 50px -30px rgba(22,24,28,.5);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{background:transparent;border:1px solid var(--line);border-radius:var(--radius-sm);width:34px;height:34px;font-size:1rem;color:var(--ink);cursor:pointer;}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  font-size:1.125rem;font-weight:600;color:var(--ink);padding:16px 0;
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--accent);}
.drawer-cta{margin-top:24px;width:100%;}
.backdrop{
  position:fixed;inset:0;background:rgba(22,24,28,.42);z-index:110;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.backdrop.is-open{opacity:1;pointer-events:auto;}

/* ---------- 进场动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--space-xl:80px;--space-lg:64px;--space-md:52px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .event-grid{gap:24px;}
  .notice-grid{grid-template-columns:1fr;gap:32px;}
  .rail-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .rail-item{padding:20px 22px;}
  .rail-item:nth-child(odd){border-left:0;padding-left:0;}
  .rail-item:nth-child(-n+2){border-top:0;}
}
@media (max-width:767px){
  :root{--space-xl:64px;--space-lg:56px;--space-md:48px;}
  body{font-size:16px;}
  .nav-links{display:none;}
  .mobile-toggle{display:inline-flex;}
  .container{padding:0 20px;}
  .cat-banner{padding:44px 0 40px;}
  .cat-banner h1{max-width:100%;}
  .event-grid{grid-template-columns:1fr;}
  .stat-cell{border-left:0;border-top:1px solid var(--line);}
  .stat-cell:first-child{border-top:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band{padding:56px 0;}
  .faq-block{padding:4px 20px 16px;}
  .accordion-content{padding-left:0;}
  .accordion-title a{gap:12px;}
}
@media (max-width:575px){
  .rail-grid{grid-template-columns:1fr;}
  .rail-item{border-left:0;padding-left:0;}
  .banner-meta{gap:20px;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .mini-list li{flex-direction:column;gap:2px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#16181C;
  --ink-soft:#3A3F46;
  --muted:#6B7078;
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --paper-3:#EFEBE3;
  --line:#DDD8CF;
  --accent:#E8582B;
  --accent-deep:#B33E17;
  --deep:#10403A;
  --danger:#C0392B;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  --radius-btn:6px;
  --radius-card:12px;
  --shadow:0 1px 2px rgba(22,24,28,.05),0 14px 34px -20px rgba(22,24,28,.22);
  --shadow-hover:0 20px 44px -22px rgba(22,24,28,.28);
  --ease:cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;color:var(--ink);line-height:1.25;font-family:var(--sans);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
button{font-family:inherit;}
::selection{background:rgba(232,88,43,.18);color:var(--ink);}

.mono{font-family:var(--mono);letter-spacing:.04em;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-btn);
  font-size:.9375rem;
  font-weight:700;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:10px 18px;font-size:.875rem;}
.btn-block{width:100%;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.9375rem;
  font-weight:700;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.text-link:hover{color:var(--accent);border-color:var(--accent);}
.text-link .arrow{transition:transform .22s var(--ease);}
.text-link:hover .arrow{transform:translateX(4px);}

.back-home{
  display:inline-block;
  font-size:.9375rem;
  color:var(--ink-soft);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
}
.back-home:hover{color:var(--accent);border-color:var(--accent);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(245,243,238,.98);
  border-bottom:1px solid transparent;
  transition:background-color .26s var(--ease),border-color .26s var(--ease),backdrop-filter .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,243,238,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .26s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:20px;
  height:20px;
  background:var(--accent);
  border-radius:0;
  flex-shrink:0;
}
.logo-word{
  font-size:1.25rem;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1;
  color:var(--ink);
  text-transform:lowercase;
}
.logo-suffix{
  border-left:1px solid var(--line);
  padding-left:10px;
  font-size:.8125rem;
  font-weight:400;
  color:var(--muted);
  line-height:1;
  white-space:nowrap;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  font-size:.9375rem;
  color:#3A3F46;
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-cta{flex-shrink:0;}
.nav-cta::after{display:none;}

.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper-2);
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  transition:background-color .2s var(--ease);
}
.menu-toggle:hover span{background:var(--accent);}

/* off canvas */
.off-canvas{background:var(--paper-2);border-left:1px solid var(--line);}
.off-canvas.is-open{box-shadow:0 0 60px rgba(22,24,28,.18);}
.oc-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
}
.oc-close{
  width:40px;
  height:40px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--radius-btn);
  font-size:1.25rem;
  line-height:1;
  color:var(--ink-soft);
  cursor:pointer;
}
.oc-close:hover{color:var(--accent);border-color:var(--accent);}
.oc-nav{padding:12px 22px 28px;}
.oc-nav a{
  display:block;
  font-size:1.125rem;
  line-height:1.4;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-soft);
}
.oc-nav a:hover{color:var(--accent);}
.oc-nav a.is-active{color:var(--ink);font-weight:700;}
.oc-nav .oc-cta{
  margin-top:22px;
  border-bottom:0;
  padding:14px 20px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#fff;
  font-weight:700;
  font-size:1rem;
  text-align:center;
}
.oc-nav .oc-cta:hover{background:var(--accent-deep);color:#fff;}

/* ---------- shared bits ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  letter-spacing:.08em;
  color:var(--muted);
  text-transform:uppercase;
  font-weight:600;
}
.eyebrow .dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  border-radius:4px;
  background:rgba(232,88,43,.12);
  color:var(--accent);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:7px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.8125rem;
  color:var(--ink-soft);
  background:transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.tag:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.tag.is-on{background:var(--ink);border-color:var(--ink);color:#fff;}

.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  margin-top:12px;
  letter-spacing:-.01em;
}
.section-note{
  max-width:42ch;
  font-size:.9375rem;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- banner ---------- */
.page-banner{
  position:relative;
  background:var(--paper-3);
  padding:48px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.banner-deco{
  position:absolute;
  inset:0 0 0 auto;
  width:46%;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center right;
  opacity:.16;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 55%);
  mask-image:linear-gradient(90deg,transparent,#000 55%);
  pointer-events:none;
}
.page-banner .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.8125rem;
  color:var(--muted);
  margin-bottom:26px;
}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .current{color:var(--muted);}
.page-banner h1{
  font-size:clamp(2rem,3.6vw,3rem);
  line-height:1.12;
  letter-spacing:-.02em;
  margin:14px 0 16px;
}
.banner-sub{
  max-width:52ch;
  font-size:1.0625rem;
  line-height:1.8;
  color:var(--ink-soft);
}
.banner-stats{
  display:grid;
  gap:18px;
  border-left:1px solid var(--line);
  padding-left:26px;
  margin-top:8px;
}
.banner-stats .stat{
  display:flex;
  align-items:baseline;
  gap:12px;
}
.banner-stats .stat b{
  font-family:var(--mono);
  font-size:1.75rem;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1;
  color:var(--ink);
}
.banner-stats .stat span{
  font-size:.8125rem;
  letter-spacing:.08em;
  color:var(--muted);
  text-transform:uppercase;
}

/* ---------- timeline ---------- */
.filter-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:44px;
}
.timeline{margin-top:8px;}
.tl-item{
  display:grid;
  grid-template-columns:132px 1fr;
  align-items:start;
}
.tl-date{
  font-family:var(--mono);
  font-size:.875rem;
  letter-spacing:.04em;
  color:var(--muted);
  padding-top:6px;
}
.tl-body{
  position:relative;
  border-left:1px solid var(--line);
  padding:0 0 44px 34px;
}
.tl-body::before{
  content:"";
  position:absolute;
  left:-5px;
  top:9px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--accent);
}
.tl-item:last-child .tl-body{padding-bottom:0;}
.tl-top{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  margin-bottom:10px;
}
.tl-id{
  font-size:.8125rem;
  color:var(--muted);
}
.tl-body h3{
  font-size:1.25rem;
  line-height:1.4;
  margin-bottom:8px;
  transition:color .22s var(--ease);
}
.tl-item:hover .tl-body h3{color:var(--accent);}
.tl-body p{
  font-size:.9375rem;
  line-height:1.85;
  color:var(--ink-soft);
  max-width:70ch;
  margin-bottom:14px;
}

/* ---------- numbered rows ---------- */
.num-list{border-top:1px solid var(--line);}
.num-row{
  display:grid;
  grid-template-columns:88px 1fr;
  gap:24px;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:transform .24s var(--ease);
}
.num-row:hover{transform:translateX(6px);}
.num-row .num{
  font-family:var(--mono);
  font-size:1.5rem;
  letter-spacing:.04em;
  color:var(--accent);
  line-height:1.2;
  transition:transform .24s var(--ease);
  transform-origin:left center;
}
.num-row:hover .num{transform:scale(1.06);}
.num-row h3{
  font-size:1.125rem;
  margin-bottom:8px;
}
.num-row p{
  font-size:.9375rem;
  line-height:1.85;
  color:var(--ink-soft);
  max-width:66ch;
}

/* ---------- media block ---------- */
.media-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.media-figure{
  border-radius:var(--radius-card);
  overflow:hidden;
  background:#E9E5DD;
  aspect-ratio:16/10;
  box-shadow:var(--shadow);
}
.media-figure img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.media-figure:hover img{transform:scale(1.03);}
.media-copy h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.22;
  margin:12px 0 16px;
}
.media-copy > p{
  font-size:1rem;
  line-height:1.85;
  color:var(--ink-soft);
  margin-bottom:24px;
}
.line-list{display:grid;gap:14px;}
.line-list li{
  position:relative;
  padding-left:22px;
  font-size:.9375rem;
  line-height:1.8;
  color:var(--ink-soft);
}
.line-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.85em;
  width:12px;
  height:1px;
  background:var(--accent);
}
.line-list li b{color:var(--ink);font-weight:700;}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.step{
  padding:34px 30px 34px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.step:last-child{border-right:0;padding-right:0;}
.step:not(:first-child){padding-left:30px;}
.step .step-num{
  font-family:var(--mono);
  font-size:.8125rem;
  letter-spacing:.08em;
  color:var(--accent);
  display:block;
  margin-bottom:16px;
}
.step h3{font-size:1.125rem;margin-bottom:10px;}
.step p{font-size:.9375rem;line-height:1.8;color:var(--ink-soft);}

/* ---------- form ---------- */
.subscribe-panel{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  box-shadow:var(--shadow);
}
.subscribe-copy h2{
  font-size:clamp(1.5rem,2.4vw,2rem);
  line-height:1.25;
  margin:12px 0 14px;
}
.subscribe-copy p{
  font-size:.9375rem;
  line-height:1.85;
  color:var(--ink-soft);
  max-width:44ch;
}
.sub-form{display:grid;gap:18px;}
.field{display:grid;gap:8px;}
.field label{
  font-size:.75rem;
  letter-spacing:.08em;
  color:var(--muted);
  text-transform:uppercase;
  font-weight:700;
}
.field input{
  width:100%;
  height:50px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper);
  color:var(--ink);
  font-size:1rem;
  font-family:var(--sans);
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.field input::placeholder{color:#9AA0A6;}
.field input:focus{
  border-color:var(--ink);
  background:var(--paper-2);
  outline:2px solid rgba(232,88,43,.35);
  outline-offset:2px;
}
.field.has-error input{border-color:var(--danger);box-shadow:inset 3px 0 0 var(--danger);}
.form-note{
  font-size:.8125rem;
  line-height:1.7;
  color:var(--muted);
  min-height:1.4em;
}
.form-note.is-ok{color:var(--deep);font-weight:600;}
.form-note.is-err{color:var(--danger);font-weight:600;}

/* ---------- faq ---------- */
.faq-wrap{max-width:920px;}
.accordion{
  background:transparent;
  border:0;
  margin:0;
}
.accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-title{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
  padding:0;
  border:0;
  background:transparent;
  font-size:1.0625rem;
  font-weight:700;
  color:var(--ink);
  transition:color .22s var(--ease);
}
.accordion-title:hover,.accordion-title:focus{background:transparent;color:var(--accent);}
.faq-num{
  font-family:var(--mono);
  font-size:1rem;
  letter-spacing:.04em;
  color:var(--accent);
  flex-shrink:0;
}
.faq-text{flex:1;min-width:0;}
.faq-icon{
  position:relative;
  width:16px;
  height:16px;
  flex-shrink:0;
  transition:transform .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  transition:transform .3s var(--ease),opacity .3s var(--ease),background-color .22s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.accordion-title:hover .faq-icon::before,
.accordion-title:hover .faq-icon::after{background:var(--accent);}
.accordion-item.is-active .faq-icon{transform:rotate(180deg);}
.accordion-item.is-active .faq-icon::after{transform:rotate(90deg);opacity:0;}
.accordion-content{
  padding:0 0 26px 0;
  border:0;
  background:transparent;
  color:var(--ink-soft);
}
.accordion-content p{
  max-width:68ch;
  font-size:.9375rem;
  line-height:1.9;
  color:var(--ink-soft);
}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--deep);
  color:#E8E4DB;
  padding:88px 0;
  border-radius:0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.25;
  margin-bottom:12px;
}
.cta-band p{
  color:#C9D3CE;
  font-size:1rem;
  line-height:1.8;
  max-width:52ch;
}
.cta-band .btn-primary{flex-shrink:0;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--deep);
  color:#E8E4DB;
  padding:72px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:48px;
  padding-bottom:56px;
}
.footer-brand .logo{margin-bottom:20px;}
.footer-brand .logo-word{color:#fff;}
.footer-brand .logo-suffix{color:#9FB3AC;border-color:rgba(232,228,219,.22);}
.footer-brand p{
  font-size:.9375rem;
  line-height:1.85;
  color:#B9C6C0;
  max-width:36ch;
}
.footer-col h4{
  color:#fff;
  font-size:.875rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:20px;
  font-weight:700;
}
.footer-col a{
  display:block;
  font-size:.9375rem;
  color:#C9D3CE;
  padding:7px 0;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-note{
  font-size:.875rem;
  line-height:1.85;
  color:#B9C6C0;
}
.footer-bottom{
  border-top:1px solid rgba(232,228,219,.16);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:.8125rem;
  color:#9FB3AC;
  flex-wrap:wrap;
}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .media-block{gap:36px;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:28px 0;}
  .step:last-child{border-bottom:0;padding-bottom:0;}
  .step:not(:first-child){padding-left:0;}
  .subscribe-panel{grid-template-columns:1fr;gap:32px;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .banner-stats{border-left:0;padding-left:0;margin-top:32px;grid-template-columns:repeat(3,auto);gap:28px;}
}

@media (max-width:767px){
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .header-inner{height:64px;}
  .page-banner{padding:36px 0 44px;}
  .banner-deco{width:100%;opacity:.1;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;}
  .media-block{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
  .cta-band{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr;gap:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .subscribe-panel{padding:28px;}
  .num-row{grid-template-columns:60px 1fr;gap:16px;padding:24px 0;}
}

@media (max-width:575px){
  .container{padding:0 20px;}
  .tl-item{grid-template-columns:1fr;}
  .tl-date{padding:0 0 10px 0;font-size:.8125rem;}
  .tl-body{border-left:0;padding:0 0 32px 0;}
  .tl-body::before{display:none;}
  .tl-item:last-child .tl-body{padding-bottom:0;}
  .banner-stats{grid-template-columns:1fr;gap:14px;}
  .banner-stats .stat b{font-size:1.5rem;}
  .btn{width:100%;}
  .nav-cta{width:auto;}
  .cta-band .btn{width:100%;}
  .filter-tags{gap:8px;}
  .tag{font-size:.75rem;padding:6px 12px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category4 */
:root{
    --ink:#16181C;
    --ink-soft:#3A3F46;
    --muted:#6B7078;
    --paper:#F5F3EE;
    --paper-2:#FFFFFF;
    --paper-3:#EFEBE3;
    --line:#DDD8CF;
    --accent:#E8582B;
    --accent-deep:#B33E17;
    --deep:#10403A;
    --deep-soft:#1B4E47;
    --radius-btn:6px;
    --radius-card:12px;
    --shadow-sm:0 1px 2px rgba(22,24,28,.05), 0 14px 34px -20px rgba(22,24,28,.22);
    --shadow-hover:0 1px 2px rgba(22,24,28,.05), 0 20px 44px -22px rgba(22,24,28,.28);
    --ease:cubic-bezier(.22,1,.36,1);
    --mono:"SFMono-Regular", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  }

  /* ---------- reset ---------- */
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;padding:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--sans);
    font-size:1.0625rem;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px;}

  .mono{font-family:var(--mono);letter-spacing:.04em;}

  /* ---------- 容器 ---------- */
  .container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(245,243,238,.86);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:background .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(245,243,238,.92);
    border-bottom-color:var(--line);
    box-shadow:0 1px 0 rgba(22,24,28,.04);
  }
  .nav-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:72px;transition:height .24s var(--ease);gap:24px;
  }
  .site-header.is-scrolled .nav-inner{height:60px;}
  .logo{display:inline-flex;align-items:center;gap:10px;}
  .logo-mark{width:20px;height:20px;background:var(--accent);border-radius:2px;flex:0 0 auto;}
  .logo-word{font-weight:800;letter-spacing:-.02em;font-size:1.125rem;line-height:1;text-transform:lowercase;}
  .logo-suffix{
    padding-left:10px;margin-left:2px;border-left:1px solid var(--line);
    font-size:.8125rem;font-weight:400;color:var(--ink-soft);letter-spacing:.04em;line-height:1.2;
  }
  .nav-links{display:flex;align-items:center;gap:32px;}
  .nav-link{
    position:relative;font-size:.9375rem;color:var(--ink-soft);padding:6px 0;
    transition:color .2s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left;
    transition:transform .24s var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--ink);font-weight:700;}
  .nav-link.is-active::after{transform:scaleX(1);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:.9375rem;font-weight:700;line-height:1;
    padding:14px 26px;border-radius:var(--radius-btn);
    border:1px solid transparent;cursor:pointer;
    transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
  .btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);transform:translateY(-1px);color:#fff;}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:#fff;}
  .btn-outline-light{background:transparent;color:#F5F3EE;border-color:rgba(245,243,238,.55);}
  .btn-outline-light:hover{background:#F5F3EE;color:var(--deep);border-color:#F5F3EE;}
  .btn-sm{padding:11px 20px;font-size:.875rem;}
  .btn-block{width:100%;}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.9375rem;
    border-bottom:1px solid var(--ink);padding-bottom:2px;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .text-link:hover{color:var(--accent);border-color:var(--accent);}
  .text-link .arrow{transition:transform .22s var(--ease);}
  .text-link:hover .arrow{transform:translateX(4px);}

  /* ---------- 移动端导航 ---------- */
  .nav-toggle{
    display:none;align-items:center;gap:8px;
    background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:10px 14px;font-size:.875rem;font-weight:700;color:var(--ink);cursor:pointer;
  }
  .nav-toggle:hover{border-color:var(--ink);}
  .nav-scrim{
    position:fixed;inset:0;background:rgba(22,24,28,.42);
    opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:90;
  }
  .nav-scrim.is-open{opacity:1;visibility:visible;}
  .nav-drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:var(--paper-2);z-index:95;
    transform:translateX(100%);transition:transform .3s var(--ease);
    display:flex;flex-direction:column;padding:24px 24px 32px;
    box-shadow:-20px 0 40px -30px rgba(22,24,28,.4);
    overflow-y:auto;
  }
  .nav-drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-close{
    background:transparent;border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:8px 12px;font-size:.8125rem;color:var(--ink-soft);cursor:pointer;
  }
  .drawer-close:hover{border-color:var(--ink);color:var(--ink);}
  .drawer-links{display:flex;flex-direction:column;}
  .drawer-links a{
    font-size:1.125rem;line-height:1.4;padding:16px 0;border-bottom:1px solid var(--line);
    color:var(--ink-soft);transition:color .2s var(--ease),padding-left .2s var(--ease);
  }
  .drawer-links a:hover{color:var(--accent);padding-left:4px;}
  .drawer-links a.is-active{color:var(--ink);font-weight:700;}
  .drawer-cta{margin-top:24px;}

  /* ---------- 分类 Banner ---------- */
  .page-banner{
    position:relative;overflow:hidden;
    background:var(--deep);color:#E8E4DB;
    padding:64px 0 60px;
  }
  .page-banner::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(90deg,rgba(232,228,219,.06) 0 1px,transparent 1px 96px);
    opacity:.7;
  }
  .banner-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:end;}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.8125rem;color:rgba(232,228,219,.7);margin-bottom:22px;}
  .breadcrumb a{color:rgba(232,228,219,.75);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:rgba(232,228,219,.4);}
  .breadcrumb .current{color:#fff;}
  .banner-badge{
    display:inline-flex;align-items:center;gap:8px;
    font-family:var(--mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;
    color:#F5C4B0;border:1px solid rgba(232,88,43,.5);background:rgba(232,88,43,.14);
    padding:6px 12px;border-radius:var(--radius-btn);margin-bottom:18px;
  }
  .banner-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .page-banner h1{
    font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.18;font-weight:800;letter-spacing:-.02em;color:#fff;
  }
  .page-banner h1 .hl{color:#F5C4B0;}
  .banner-sub{margin-top:18px;max-width:52ch;color:rgba(232,228,219,.86);font-size:1rem;line-height:1.8;}
  .banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .banner-facts{display:grid;gap:18px;border-left:1px solid rgba(232,228,219,.2);padding-left:28px;}
  .banner-fact .num{font-family:var(--mono);font-size:1.6rem;line-height:1;color:#fff;letter-spacing:.04em;}
  .banner-fact .label{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:rgba(232,228,219,.62);margin-top:8px;}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;}
  .eyebrow{
    font-family:var(--mono);font-size:.75rem;letter-spacing:.16em;text-transform:uppercase;
    color:var(--accent);margin-bottom:12px;display:flex;align-items:center;gap:10px;
  }
  .eyebrow::before{content:"";width:28px;height:1px;background:var(--accent);}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.22;font-weight:800;letter-spacing:-.02em;max-width:24ch;}
  .section-desc{color:var(--ink-soft);max-width:56ch;margin-top:14px;}

  /* ---------- 编号网格 ---------- */
  .numb-grid{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    border-top:1px solid var(--line);border-left:1px solid var(--line);
    background:var(--paper-2);
  }
  .numb-cell{
    border-right:1px solid var(--line);border-bottom:1px solid var(--line);
    padding:40px 36px 36px;position:relative;
    transition:background .24s var(--ease);
  }
  .numb-cell:hover{background:#FBF9F5;}
  .numb-cell .big-num{
    font-family:var(--mono);font-size:4rem;line-height:.9;letter-spacing:.02em;
    color:transparent;-webkit-text-stroke:1px rgba(22,24,28,.28);
    display:block;margin-bottom:20px;
    transition:color .24s var(--ease),-webkit-text-stroke-color .24s var(--ease);
  }
  .numb-cell:hover .big-num{-webkit-text-stroke-color:var(--accent);}
  .numb-cell h3{font-size:1.25rem;font-weight:800;letter-spacing:-.01em;margin-bottom:12px;}
  .numb-cell p{color:var(--ink-soft);font-size:1rem;line-height:1.85;margin-bottom:16px;}
  .numb-cell .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
  .chip{
    display:inline-flex;align-items:center;font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;
    color:var(--ink-soft);border:1px solid var(--line);border-radius:var(--radius-btn);
    padding:5px 10px;background:var(--paper);
  }
  .chip-accent{color:var(--accent-deep);border-color:rgba(232,88,43,.34);background:rgba(232,88,43,.1);}

  /* ---------- 时效数据带 ---------- */
  .metrics-band{
    background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .metrics-inner{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));}
  .metric{padding:36px 28px;border-left:1px solid var(--line);}
  .metric:first-child{border-left:0;padding-left:0;}
  .metric .value{font-family:var(--mono);font-size:1.75rem;line-height:1.1;letter-spacing:.03em;color:var(--ink);}
  .metric .value em{font-style:normal;font-size:.875rem;color:var(--muted);margin-left:4px;letter-spacing:.02em;}
  .metric .label{margin-top:10px;font-size:.8125rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);}

  /* ---------- 图文流程 ---------- */
  .flow-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start;}
  .flow-figure{
    border-radius:var(--radius-card);overflow:hidden;background:#E9E5DD;
    box-shadow:var(--shadow-sm);position:relative;aspect-ratio:4/3;
  }
  .flow-figure img{width:100%;height:100%;object-fit:cover;}
  .flow-figure figcaption{
    position:absolute;left:16px;bottom:16px;right:16px;
    background:rgba(255,255,255,.94);border-radius:10px;padding:14px 16px;
    font-size:.875rem;color:var(--ink-soft);line-height:1.6;
  }
  .flow-list{margin-top:8px;}
  .flow-item{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;padding:24px 0;border-bottom:1px solid var(--line);}
  .flow-item:last-child{border-bottom:0;}
  .flow-item .step{font-family:var(--mono);font-size:1.125rem;color:var(--accent);letter-spacing:.06em;padding-top:2px;}
  .flow-item h3{font-size:1.0625rem;font-weight:800;margin-bottom:8px;}
  .flow-item p{color:var(--ink-soft);font-size:.9375rem;line-height:1.8;}

  /* ---------- 材料清单 ---------- */
  .checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 40px;margin-top:8px;}
  .checklist li{
    position:relative;padding-left:22px;color:var(--ink-soft);font-size:.9375rem;line-height:1.8;
  }
  .checklist li::before{content:"";position:absolute;left:0;top:.85em;width:12px;height:1px;background:var(--accent);}
  .note-box{
    margin-top:32px;background:var(--paper-3);border-left:3px solid var(--accent);
    padding:20px 24px;border-radius:0 var(--radius-btn) var(--radius-btn) 0;
    color:var(--ink-soft);font-size:.9375rem;line-height:1.85;
  }
  .note-box strong{color:var(--ink);}

  /* ---------- FAQ ---------- */
  .faq-panel{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:12px 32px;}
  .faq-acc.accordion{background:transparent;border:0;margin:0;}
  .faq-acc.accordion .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;border-radius:0;}
  .faq-acc.accordion .accordion-item:last-child{border-bottom:0;}
  .faq-acc.accordion .accordion-title{
    background:transparent;border:0;margin:0;padding:20px 52px 20px 0;
    min-height:64px;display:flex;align-items:center;gap:16px;
    font-size:1.0625rem;font-weight:700;color:var(--ink);line-height:1.5;
    transition:color .22s var(--ease);
  }
  .faq-acc.accordion .accordion-title:hover{color:var(--accent);}
  .faq-acc.accordion .accordion-title .faq-num{
    font-family:var(--mono);font-size:1rem;color:var(--accent);letter-spacing:.06em;flex:0 0 auto;
  }
  .faq-acc.accordion .accordion-title::before{
    content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
    font-size:1.5rem;line-height:1;color:var(--accent);font-weight:400;margin:0;
    transition:transform .28s var(--ease),color .22s var(--ease);
  }
  .faq-acc.accordion .accordion-item.is-active .accordion-title::before{
    content:"−";transform:translateY(-50%) rotate(180deg);color:var(--accent-deep);
  }
  .faq-acc.accordion .accordion-content{
    background:transparent;border:0;padding:0 52px 24px 0;color:var(--ink-soft);
    font-size:1rem;line-height:1.9;max-width:68ch;
  }

  /* ---------- CTA 通栏 ---------- */
  .cta-band{background:var(--deep);color:#E8E4DB;padding:88px 0;}
  .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
  .cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.24;font-weight:800;letter-spacing:-.02em;color:#fff;max-width:22ch;}
  .cta-inner p{margin-top:14px;color:rgba(232,228,219,.82);max-width:48ch;}

  /* ---------- 返回入口 ---------- */
  .back-row{padding:40px 0 56px;}
  .back-row .text-link{font-size:.9375rem;border-color:var(--line);color:var(--ink-soft);font-weight:400;}
  .back-row .text-link:hover{color:var(--accent);border-color:var(--accent);font-weight:700;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--deep);color:#E8E4DB;padding:72px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;}
  .footer-brand .logo{margin-bottom:18px;}
  .footer-brand .logo-word,.footer-brand .logo-suffix{color:#fff;}
  .footer-brand .logo-suffix{border-left-color:rgba(232,228,219,.35);color:rgba(232,228,219,.72);}
  .footer-brand p{color:rgba(232,228,219,.72);font-size:.9375rem;line-height:1.85;max-width:34ch;}
  .footer-col h4{
    font-size:.8125rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(232,228,219,.6);
    font-weight:700;margin-bottom:18px;
  }
  .footer-col a{
    display:block;color:#E8E4DB;font-size:.9375rem;padding:7px 0;
    transition:color .2s var(--ease),transform .2s var(--ease);
  }
  .footer-col a:hover{color:var(--accent);transform:translateX(2px);}
  .footer-note{color:rgba(232,228,219,.72);font-size:.875rem;line-height:1.85;}
  .footer-bottom{
    border-top:1px solid rgba(232,228,219,.18);padding:22px 0 28px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:.8125rem;color:rgba(232,228,219,.6);
  }

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .banner-grid{grid-template-columns:1fr;gap:32px;align-items:start;}
    .banner-facts{grid-template-columns:repeat(3,minmax(0,1fr));border-left:0;padding-left:0;border-top:1px solid rgba(232,228,219,.2);padding-top:24px;}
    .flow-wrap{grid-template-columns:1fr;gap:40px;}
    .metrics-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
    .metric{padding:28px 24px;}
    .metric:nth-child(odd){border-left:0;padding-left:0;}
    .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line);}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .numb-grid{grid-template-columns:1fr;}
    .numb-cell{padding:32px 24px;}
    .numb-cell .big-num{font-size:3.25rem;}
    .page-banner{padding:44px 0 48px;}
    .section{padding:56px 0;}
    .section-tight{padding:48px 0;}
    .section-head{margin-bottom:32px;}
    .banner-facts{grid-template-columns:1fr;gap:16px;}
    .checklist{grid-template-columns:1fr;}
    .faq-panel{padding:8px 20px;}
    .faq-acc.accordion .accordion-title{font-size:1rem;padding-right:40px;gap:12px;}
    .faq-acc.accordion .accordion-content{padding-right:0;}
    .cta-band{padding:56px 0;}
    .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
    .footer-bottom{flex-direction:column;}
    .back-row{padding:28px 0 44px;}
  }
  @media (max-width:575px){
    .metrics-inner{grid-template-columns:1fr;}
    .metric{border-left:0;padding-left:0;border-bottom:1px solid var(--line);}
    .metric:last-child{border-bottom:0;}
    .flow-item{grid-template-columns:40px minmax(0,1fr);gap:14px;}
    .banner-actions .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category3 */
:root{
  --ink:#16181C;
  --ink-soft:#3A3F46;
  --muted:#6B7078;
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --paper-3:#EFEBE3;
  --line:#DDD8CF;
  --accent:#E8582B;
  --accent-deep:#B33E17;
  --deep:#10403A;
  --radius-btn:6px;
  --radius-card:12px;
  --shadow-1:0 1px 2px rgba(22,24,28,.05), 0 14px 34px -20px rgba(22,24,28,.22);
  --shadow-2:0 20px 44px -22px rgba(22,24,28,.28);
  --font-sans:"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.22,1,.36,1);
}

*,
*::before,
*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink-soft);
  font-family:var(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  color:var(--ink);
  font-family:var(--font-sans);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-0.02em;
}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

ul,ol{margin:0;padding:0;list-style:none;}
li{margin:0;}

a{
  color:var(--ink);
  text-decoration:none;
  transition:color .22s var(--ease);
}
a:hover{color:var(--accent-deep);}

img{max-width:100%;display:block;border:0;}
figure{margin:0;}

button{
  font-family:inherit;
  font-size:inherit;
  cursor:pointer;
  border:0;
  background:none;
  color:inherit;
}

input,textarea,select{font-family:inherit;font-size:1rem;}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:2px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

.mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------------- Header ---------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:900;
  background:rgba(245,243,238,.86);
  border-bottom:1px solid transparent;
  transition:background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,243,238,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .26s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  text-decoration:none;
}
.logo-mark{
  width:20px;
  height:20px;
  background:var(--accent);
  border-radius:2px;
  flex:0 0 auto;
}
.logo-word{
  font-size:1.125rem;
  font-weight:800;
  letter-spacing:-0.02em;
  color:var(--ink);
  line-height:1;
  text-transform:lowercase;
}
.logo-suffix{
  padding-left:10px;
  border-left:1px solid var(--line);
  font-size:.8125rem;
  font-weight:400;
  letter-spacing:.02em;
  color:var(--muted);
  line-height:1.4;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:.9375rem;
  font-weight:500;
  color:var(--ink-soft);
  text-decoration:none;
  white-space:nowrap;
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}

.nav-cta{flex:0 0 auto;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-btn);
  font-size:.9375rem;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.01em;
  text-decoration:none;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-sm{padding:11px 20px;font-size:.875rem;}
.btn-primary{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn-primary:hover{
  background:var(--accent-deep);
  border-color:var(--accent-deep);
  color:#fff;
  transform:translateY(-1px);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-ghost-light{
  background:transparent;
  color:#F2EFE8;
  border-color:rgba(242,239,232,.55);
}
.btn-ghost-light:hover{background:#F2EFE8;color:var(--deep);border-color:#F2EFE8;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;
  height:44px;
  padding:0 10px;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper-2);
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--ink);
  border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}

/* ---------------- Off-canvas ---------------- */
.off-canvas.position-right{
  position:fixed;
  top:0;
  right:0;
  height:100%;
  width:min(320px,86vw);
  padding:0;
  background:var(--paper-2);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  visibility:visible;
  transition:transform .32s var(--ease);
  z-index:1300;
  overflow-y:auto;
  box-shadow:none;
  display:block;
}
.off-canvas.position-right.is-open{transform:translateX(0);}
.canvas-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 20px;
  border-bottom:1px solid var(--line);
}
.canvas-close{
  width:40px;
  height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:1.5rem;
  line-height:1;
  color:var(--ink-soft);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  background:var(--paper);
}
.canvas-close:hover{color:var(--accent);border-color:var(--accent);}
.canvas-nav{padding:8px 20px 20px;}
.canvas-nav a{
  display:block;
  padding:16px 0;
  font-size:1.125rem;
  line-height:1.5;
  color:var(--ink-soft);
  border-bottom:1px solid var(--line);
}
.canvas-nav a.is-active{color:var(--ink);font-weight:700;}
.canvas-nav a:hover{color:var(--accent);}
.canvas-foot{padding:8px 20px 32px;}
.canvas-foot .btn{width:100%;}

.canvas-overlay{
  position:fixed;
  inset:0;
  background:rgba(22,24,28,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
  z-index:1200;
}
.canvas-overlay.is-open{opacity:1;visibility:visible;}

/* ---------------- Banner ---------------- */
.cat-banner{
  position:relative;
  overflow:hidden;
  background:var(--deep);
  color:#E8E4DB;
  padding:48px 0 60px;
  border-radius:0;
}
.cat-banner::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  pointer-events:none;
}
.cat-banner .container{position:relative;z-index:1;}

.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:.8125rem;
  color:rgba(232,228,219,.62);
  margin-bottom:26px;
}
.breadcrumb a{color:rgba(232,228,219,.82);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(232,228,219,.4);}
.breadcrumb .current{color:rgba(232,228,219,.62);}

.banner-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border:1px solid rgba(232,228,219,.32);
  border-radius:100px;
  font-size:.8125rem;
  letter-spacing:.08em;
  color:rgba(232,228,219,.9);
  margin-bottom:20px;
}
.banner-badge .dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}

.cat-banner h1{
  color:#F7F5F0;
  font-size:clamp(1.9rem,3.8vw,3rem);
  line-height:1.15;
  letter-spacing:-0.03em;
  max-width:22ch;
  margin:0 0 20px;
}
.banner-sub{
  max-width:56ch;
  font-size:1.0625rem;
  line-height:1.8;
  color:rgba(232,228,219,.86);
  margin:0 0 28px;
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  font-size:.8125rem;
  letter-spacing:.06em;
  color:rgba(232,228,219,.72);
}
.banner-meta li{
  position:relative;
  padding-left:16px;
}
.banner-meta li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:8px;
  height:1px;
  background:var(--accent);
}

/* ---------------- Spec strip ---------------- */
.spec-strip{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
}
.spec-strip .strip-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.strip-cell{
  padding:26px 24px;
  border-left:1px solid var(--line);
}
.strip-cell:first-child{border-left:0;padding-left:0;}
.strip-label{
  display:block;
  font-size:.8125rem;
  letter-spacing:.08em;
  color:var(--muted);
  margin-bottom:8px;
}
.strip-value{
  font-family:var(--font-mono);
  font-size:1.75rem;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--ink);
  line-height:1.1;
}
.strip-note{
  display:block;
  margin-top:6px;
  font-size:.8125rem;
  color:var(--ink-soft);
}

/* ---------------- Section base ---------------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--paper-2);}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-kicker{
  display:block;
  font-family:var(--font-mono);
  font-size:.8125rem;
  letter-spacing:.14em;
  color:var(--accent);
  margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
}
.section-head p{
  max-width:52ch;
  margin:12px 0 0;
  color:var(--ink-soft);
  font-size:1rem;
  line-height:1.85;
}
.section-link{
  flex:0 0 auto;
  font-size:.9375rem;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:3px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.section-link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------------- Gear list ---------------- */
.gear-list{display:grid;gap:56px;}
.xy-grid.gear-item{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:40px;
  align-items:start;
}
.gear-figure{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  background:#E9E5DD;
}
.gear-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-card);
  background:#E9E5DD;
  transition:transform .5s var(--ease);
}
.gear-figure:hover img{transform:scale(1.02);}
.gear-tag{
  position:absolute;
  top:14px;
  left:14px;
  padding:5px 12px;
  border-radius:100px;
  background:rgba(245,243,238,.94);
  color:var(--accent-deep);
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.08em;
}

.gear-body h3{
  font-size:1.25rem;
  line-height:1.4;
  margin-bottom:12px;
}
.gear-body h3 a{color:var(--ink);}
.gear-body h3 a:hover{color:var(--accent);}
.gear-desc{
  color:var(--ink-soft);
  font-size:1rem;
  line-height:1.85;
  max-width:60ch;
  margin-bottom:20px;
}
.spec-list{
  border-top:1px solid var(--line);
}
.spec-list li{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:20px;
  padding:11px 0;
  border-bottom:1px solid var(--line);
}
.spec-key{
  font-size:.875rem;
  color:var(--muted);
  letter-spacing:.02em;
  flex:0 0 auto;
}
.spec-val{
  font-family:var(--font-mono);
  font-size:.875rem;
  letter-spacing:.04em;
  color:var(--ink);
  text-align:right;
  word-break:break-word;
}

/* ---------------- Check block ---------------- */
.xy-grid.check-grid{
  display:grid;
  grid-template-columns:minmax(0,340px) minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.check-head h2{
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  margin-bottom:14px;
}
.check-head p{color:var(--ink-soft);font-size:1rem;}
.check-list li{
  position:relative;
  padding:22px 0 22px 28px;
  border-bottom:1px solid var(--line);
}
.check-list li:first-child{border-top:1px solid var(--line);}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:34px;
  width:14px;
  height:1px;
  background:var(--accent);
}
.check-list h3{
  font-size:1.0625rem;
  margin-bottom:6px;
}
.check-list p{color:var(--ink-soft);font-size:.9375rem;line-height:1.8;}

/* ---------------- Flow ---------------- */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.flow-step{
  padding:28px 24px 8px;
  border-left:1px solid var(--line);
}
.flow-step:first-child{border-left:0;padding-left:0;}
.flow-num{
  font-family:var(--font-mono);
  font-size:1.5rem;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--accent);
  display:block;
  margin-bottom:14px;
}
.flow-step h3{font-size:1.0625rem;margin-bottom:8px;}
.flow-step p{font-size:.9375rem;color:var(--ink-soft);line-height:1.8;}

/* ---------------- FAQ ---------------- */
.faq-wrap{max-width:900px;}
.accordion.faq-accordion{
  background:transparent;
  border:0;
  margin:0;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.faq-accordion .accordion-item:first-child{border-top:1px solid var(--line);}
.faq-accordion .accordion-title{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:64px;
  padding:16px 0;
  background:transparent;
  border:0;
  border-radius:0;
  font-size:1.0625rem;
  font-weight:700;
  color:var(--ink);
  line-height:1.5;
  transition:color .22s var(--ease);
}
.faq-accordion .accordion-title:hover,
.faq-accordion .accordion-title:focus{background:transparent;color:var(--accent);}
.faq-accordion .accordion-title::before{display:none !important;content:none !important;}
.faq-num{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:1.125rem;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--accent);
}
.faq-q{flex:1 1 auto;min-width:0;}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;
  height:16px;
  margin-left:8px;
  transition:transform .3s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  border-radius:1px;
  transition:transform .3s var(--ease),opacity .3s var(--ease),background-color .22s var(--ease);
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.accordion-item.is-active .faq-icon{transform:rotate(180deg);}
.accordion-item.is-active .faq-icon::after{transform:rotate(90deg);opacity:0;}
.accordion-item.is-active .faq-icon::before{background:var(--accent);}

.faq-accordion .accordion-content{
  display:none;
  padding:0 0 24px 0;
  border:0;
  background:transparent;
  color:var(--ink-soft);
  font-size:1rem;
  line-height:1.9;
}
.faq-accordion .accordion-content p{max-width:68ch;}
.accordion-item.is-active > .accordion-content{display:block;}

/* ---------------- CTA band ---------------- */
.cta-band{
  background:var(--deep);
  color:#E8E4DB;
  padding:88px 0;
  border-radius:0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-band h2{
  color:#F7F5F0;
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  margin-bottom:12px;
}
.cta-band p{
  color:rgba(232,228,219,.82);
  font-size:1rem;
  max-width:52ch;
  margin:0;
}
.cta-band .btn-primary{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
  flex:0 0 auto;
}

/* ---------------- Back link ---------------- */
.back-row{
  padding:40px 0 72px;
}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:3px;
  transition:color .22s var(--ease),border-color .22s var(--ease);
}
.back-link:hover{color:var(--accent);border-color:var(--accent);}

/* ---------------- Footer ---------------- */
.site-footer{
  background:var(--deep);
  color:#E8E4DB;
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.site-footer .logo-word{color:#FFFFFF;}
.site-footer .logo-suffix{
  color:rgba(232,228,219,.66);
  border-left-color:rgba(232,228,219,.28);
}
.footer-brand p{
  margin-top:18px;
  max-width:36ch;
  color:rgba(232,228,219,.74);
  font-size:.9375rem;
  line-height:1.85;
}
.footer-col h4{
  color:#FFFFFF;
  font-size:.9375rem;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:.9375rem;
  color:rgba(232,228,219,.82);
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-note{
  font-size:.9375rem;
  line-height:1.85;
  color:rgba(232,228,219,.74);
  margin:0;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid rgba(232,228,219,.18);
  font-size:.8125rem;
  color:rgba(232,228,219,.6);
}

/* ---------------- Reveal ---------------- */
.js-anim .reveal{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .48s var(--ease),transform .48s var(--ease);
}
.js-anim .reveal.is-in{
  opacity:1;
  transform:none;
}

/* ---------------- Responsive ---------------- */
@media (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .cta-band{padding:64px 0;}
  .spec-strip .strip-grid{grid-template-columns:repeat(2,1fr);}
  .strip-cell{padding:22px 20px;}
  .strip-cell:nth-child(odd){border-left:0;padding-left:0;}
  .strip-cell:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .xy-grid.check-grid{grid-template-columns:1fr;gap:32px;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .flow-step{padding:24px 20px 8px;}
  .flow-step:nth-child(odd){border-left:0;padding-left:0;}
  .flow-step:nth-child(-n+2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:64px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .cat-banner{padding:36px 0 48px;}
  .cat-banner h1{max-width:100%;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .xy-grid.gear-item{grid-template-columns:1fr;gap:24px;}
  .gear-list{gap:40px;}
  .gear-body h3{font-size:1.125rem;}
  .spec-list li{flex-wrap:wrap;gap:4px;}
  .spec-val{text-align:left;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-step{border-left:0;padding:20px 0 20px 0;border-bottom:1px solid var(--line);}
  .flow-step:last-child{border-bottom:0;}
  .faq-accordion .accordion-title{gap:12px;font-size:1rem;min-height:60px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .site-footer{padding-top:48px;}
  .cta-band{padding:56px 0;}
  .back-row{padding:32px 0 56px;}
}

@media (max-width:519px){
  .banner-meta{flex-direction:column;gap:8px;}
  .strip-value{font-size:1.5rem;}
  .spec-strip .strip-grid{grid-template-columns:1fr;}
  .strip-cell{border-left:0;padding-left:0;border-bottom:1px solid var(--line);}
  .strip-cell:last-child{border-bottom:0;}
}

@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .js-anim .reveal{opacity:1;transform:none;}
}