/* roulang page: index */
:root{
  --ink:#16180F;
  --pine:#1F4B41;
  --pine-deep:#14332C;
  --paper:#F7F4EC;
  --sand:#EFE8DA;
  --line:#DCD3C0;
  --copper:#9A6B3F;
  --muted:#5C5F58;
  --danger:#A8452F;
  --radius-card:12px;
  --radius-btn:4px;
  --radius-img:8px;
  --ease:cubic-bezier(.22,1,.36,1);
  --t:220ms;
}
*,*::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:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--pine);outline-offset:3px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 64px}
.section{padding:128px 0}
.section--sand{background:var(--sand)}
.section--tight{padding:96px 0}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,244,236,0);
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,244,236,.98);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:32px;
}
.brand{display:flex;align-items:baseline;gap:6px;letter-spacing:-0.01em}
.brand-main{font-size:22px;font-weight:800;color:var(--ink)}
.brand-sub{font-size:13px;font-weight:400;color:var(--muted);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:40px}
.nav-link{
  position:relative;
  font-size:14px;color:var(--ink);
  padding:6px 0;
  transition:color var(--t) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--ink);transition:width var(--t) var(--ease);
}
.nav-link:hover::after{width:100%}
.nav-link.is-active{font-weight:700}
.nav-link.is-active::before{
  content:"";position:absolute;left:50%;bottom:-8px;transform:translateX(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--copper);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  background:var(--pine);color:#fff;font-size:14px;font-weight:600;
  transition:background var(--t) var(--ease),transform var(--t) var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{background:var(--pine-deep);transform:translateY(-1px)}
.burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.burger span{display:block;width:20px;height:1.5px;background:var(--ink);transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}
.drawer{
  position:fixed;inset:0;z-index:100;background:var(--paper);
  display:none;flex-direction:column;padding:28px 24px 48px;
}
.drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:48px}
.drawer-close{width:44px;height:44px;font-size:26px;line-height:1;color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-btn)}
.drawer-nav{display:flex;flex-direction:column;gap:8px}
.drawer-nav a{font-size:22px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--pine)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:16px}
.drawer-foot .nav-cta{height:48px;width:100%;font-size:16px}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:172px 0 112px;
  background-image:
    repeating-linear-gradient(to right, rgba(22,24,15,.06) 0 1px, transparent 1px 120px);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.14em;color:var(--copper);
  border:1px solid var(--line);border-radius:999px;padding:5px 14px;margin-bottom:26px;
}
.eyebrow i{display:block;width:5px;height:5px;border-radius:50%;background:var(--copper)}
.hero h1{
  font-size:clamp(2.4rem,5vw,4.2rem);
  font-weight:800;line-height:1.08;letter-spacing:-0.01em;max-width:15ch;
}
.hero h1 .hl{color:var(--copper)}
.hero-lead{margin-top:24px;font-size:17px;color:var(--muted);max-width:34ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn-primary{background:var(--pine);color:#fff}
.btn-primary:hover{background:var(--pine-deep);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-copper{background:var(--copper);color:#fff}
.btn-copper:hover{filter:brightness(1.06);transform:translateY(-1px)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.hero-caption{
  position:absolute;left:14px;bottom:14px;
  background:rgba(247,244,236,.94);color:var(--muted);
  font-size:12px;padding:5px 10px;border-radius:3px;border:1px solid var(--line);
}

/* ============ 指标条 ============ */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:34px 24px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0;padding-left:0}
.metric-num{font-size:34px;font-weight:700;color:var(--copper);line-height:1.2;letter-spacing:-0.01em}
.metric-label{font-size:13px;color:var(--muted);margin-top:6px}

/* ============ 板块标题 ============ */
.sec-head{max-width:760px;margin-bottom:52px}
.sec-num{
  display:flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.18em;color:var(--copper);margin-bottom:14px;
}
.sec-num::after{content:"";display:block;width:40px;height:1px;background:var(--copper);opacity:.6}
.sec-head h2{font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:700;line-height:1.25}
.sec-desc{margin-top:16px;font-size:16px;color:var(--muted);max-width:62ch}

/* ============ 价值主张 行式编号 ============ */
.value-list{border-top:1px solid var(--line)}
.value-row{
  display:grid;grid-template-columns:88px 1fr 1.1fr;gap:32px;
  padding:36px 0;border-bottom:1px solid var(--line);align-items:start;
  transition:background var(--t) var(--ease);
}
.value-row:hover{background:var(--sand)}
.value-idx{font-size:15px;font-weight:700;color:var(--copper);letter-spacing:.12em;padding-top:4px}
.value-row h3{font-size:1.3rem;font-weight:600;line-height:1.4}
.value-row p{font-size:15px;color:var(--muted);line-height:1.85}

/* ============ 功能分组 交替图文 ============ */
.feature-block{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;margin-bottom:88px}
.feature-block:last-child{margin-bottom:0}
.feature-block.reverse .feature-text{order:2}
.feature-block.reverse .feature-media{order:1}
.feature-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border:1px solid var(--line)}
.feature-text h3{font-size:1.45rem;font-weight:700;line-height:1.35;margin-bottom:16px}
.feature-text p{color:var(--muted);font-size:15.5px}
.feature-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.feature-list li{display:flex;gap:12px;font-size:15px;color:var(--ink)}
.feature-list li::before{content:"";flex:none;width:6px;height:6px;margin-top:11px;border-radius:50%;background:var(--copper)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  font-size:12px;letter-spacing:.1em;color:var(--pine);
  border:1px solid var(--line);border-radius:999px;padding:5px 14px;background:#fff;
}

/* ============ 使用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:#fff;
  padding:32px 28px;transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(31,75,65,.4);background:#FFFDF8}
.scene-num{font-size:44px;font-weight:800;color:var(--sand);line-height:1;letter-spacing:-0.02em}
.scene-card:hover .scene-num{color:rgba(154,107,63,.28)}
.scene-card h3{font-size:1.2rem;font-weight:600;margin:16px 0 10px}
.scene-card p{font-size:14.5px;color:var(--muted)}

/* ============ 登录面板 ============ */
.login-wrap{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.login-card{
  background:var(--sand);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;max-width:460px;
}
.login-card h3{font-size:1.25rem;font-weight:700;margin-bottom:6px}
.login-card > p{font-size:14px;color:var(--muted);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}
.field input{
  width:100%;height:44px;padding:0 12px;font-size:15px;
  border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field input:focus{
  outline:none;border-color:var(--pine);
  box-shadow:0 0 0 3px rgba(31,75,65,.14);
}
.field.has-error input{border-color:var(--danger)}
.field-error{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.has-error .field-error{display:block}
.login-submit{width:100%;height:46px;margin-top:6px}
.login-note{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:16px;font-size:13px;color:var(--muted);
}
.login-note a{color:var(--pine);border-bottom:1px solid rgba(31,75,65,.35);padding-bottom:1px}
.login-note a:hover{color:var(--pine-deep);border-color:var(--pine-deep)}
.login-form-msg{display:none;font-size:13px;margin-top:14px;color:var(--pine)}
.login-form-msg.is-visible{display:block}

/* ============ 案例 ============ */
.case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch}
.case-card{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.case-card:hover{transform:translateY(-2px);border-color:rgba(31,75,65,.4)}
.case-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.case-body{padding:28px}
.case-body h3{font-size:1.2rem;font-weight:600;margin-bottom:10px}
.case-body p{font-size:14.5px;color:var(--muted)}
.case-meta{
  display:flex;gap:24px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.case-meta strong{color:var(--copper);font-weight:700}
.case-side{display:flex}
.case-side .case-card{width:100%}

/* ============ 最新信息 CMS ============ */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.news-head .sec-head{margin-bottom:0}
.news-more{font-size:14px;color:var(--pine);border-bottom:1px solid rgba(31,75,65,.35);padding-bottom:2px;white-space:nowrap}
.news-list{border-top:1px solid var(--line)}
.news-row{
  display:grid;grid-template-columns:120px 1fr 120px;gap:28px;align-items:center;
  padding:26px 16px;border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease);
}
.news-row:hover{background:var(--sand)}
.news-tag{
  display:inline-flex;justify-content:center;
  font-size:12px;letter-spacing:.1em;color:var(--pine);
  border:1px solid var(--line);border-radius:999px;padding:4px 10px;background:#fff;
  width:max-content;max-width:100%;
}
.news-main h3{font-size:1.05rem;font-weight:600;line-height:1.5;transition:color var(--t) var(--ease)}
.news-row:hover .news-main h3{color:var(--pine)}
.news-main p{font-size:14px;color:var(--muted);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-date{font-size:13px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.news-arrow{display:none}
.news-row:hover .news-arrow{display:inline;margin-left:6px;color:var(--copper)}
.news-empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;color:var(--muted);
}
.news-empty svg{width:22px;height:22px;margin:0 auto 12px;color:var(--copper)}
.news-empty p{font-size:14px}
.news-empty a{display:inline-block;margin-top:14px;font-size:14px;color:var(--pine);border-bottom:1px solid rgba(31,75,65,.35)}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px 30px;display:flex;flex-direction:column;
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.price-card:hover{transform:translateY(-2px);border-color:rgba(31,75,65,.4)}
.price-card h3{font-size:1.15rem;font-weight:600}
.price-amount{font-size:32px;font-weight:700;margin:18px 0 6px;line-height:1.2}
.price-amount small{font-size:14px;font-weight:400;color:var(--muted)}
.price-desc{font-size:14px;color:var(--muted);min-height:48px}
.price-list{margin:22px 0 28px;display:flex;flex-direction:column;gap:12px;font-size:14.5px}
.price-list li{display:flex;gap:10px;align-items:flex-start}
.price-list li::before{content:"✓";font-size:13px;color:var(--copper);line-height:1.9}
.price-card .btn{width:100%;margin-top:auto}
.price-card.is-featured{
  background:var(--pine-deep);color:#fff;border-color:var(--pine-deep);position:relative;
}
.price-card.is-featured .price-desc,
.price-card.is-featured .price-amount small,
.price-card.is-featured .price-list li{color:rgba(255,255,255,.78)}
.price-card.is-featured .price-list li::before{color:#D6B48C}
.price-badge{
  position:absolute;top:-12px;left:30px;
  background:var(--copper);color:#fff;font-size:12px;letter-spacing:.1em;
  padding:3px 12px;border-radius:999px;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
  transition:color var(--t) var(--ease);
}
.faq-q:hover{color:var(--pine)}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform 280ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--copper);border-radius:1px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:1.5px}
.faq-icon::after{left:10px;top:0;width:1.5px;height:22px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 280ms var(--ease);
}
.faq-a-inner{padding:0 40px 26px 0;font-size:15px;color:var(--muted);max-width:72ch}

/* ============ CTA ============ */
.cta-band{
  background:var(--pine-deep);color:#fff;
  border-radius:var(--radius-card);
  padding:64px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  background-image:repeating-linear-gradient(to right, rgba(255,255,255,.06) 0 1px, transparent 1px 120px);
}
.cta-band h2{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:700;line-height:1.3;max-width:20ch}
.cta-band p{margin-top:14px;font-size:15px;color:rgba(255,255,255,.75);max-width:44ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff}
.cta-band .btn-ghost:hover{background:#fff;color:var(--pine-deep);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:24ch}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--muted);transition:color var(--t) var(--ease)}
.footer-col a:hover{color:var(--ink)}
.footer-col li span{font-size:14px;color:var(--muted)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom .kw{letter-spacing:.06em}

/* ============ 动画 ============ */
.reveal{opacity:0;transform:translateY(12px);animation:fadeUp 620ms var(--ease) forwards}
.reveal-2{animation-delay:120ms}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
.hero-rule{height:1px;width:0;background:var(--line);margin-top:44px;animation:grow 480ms var(--ease) 240ms forwards}
@keyframes grow{to{width:100%}}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .hero-rule{width:100%}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 40px}
  .section{padding:96px 0}
  .hero{padding:150px 0 88px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero h1{max-width:20ch}
  .nav-links{gap:26px}
  .nav-cta{display:none}
  .nav-links .nav-link{font-size:13.5px}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .metric{border-left:1px solid var(--line);padding:28px 20px}
  .metric:nth-child(odd){border-left:0;padding-left:0}
  .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .value-row{grid-template-columns:64px 1fr;gap:20px}
  .value-row p{grid-column:2}
  .feature-block{grid-template-columns:1fr;gap:36px;margin-bottom:72px}
  .feature-block.reverse .feature-text{order:0}
  .feature-block.reverse .feature-media{order:0}
  .scene-grid{grid-template-columns:1fr;gap:18px}
  .login-wrap{grid-template-columns:1fr;gap:40px}
  .login-card{max-width:100%}
  .case-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:48px 36px}
}
@media (max-width:768px){
  .container{padding:0 22px}
  .nav-links{display:none}
  .burger{display:flex}
  .nav-inner{height:64px}
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .hero{padding:118px 0 64px}
  .hero-actions .btn{flex:1 1 auto}
  .news-head{flex-direction:column;align-items:flex-start;gap:14px}
  .news-row{grid-template-columns:1fr;gap:10px;padding:22px 12px}
  .news-date{text-align:left;order:-1}
  .news-tag{order:-2}
  .cta-band{padding:40px 24px;border-radius:10px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-a-inner{padding-right:0}
  .metric-num{font-size:28px}
  .sec-head{margin-bottom:36px}
}
@media (max-width:520px){
  .hero h1{font-size:2.15rem}
  .hero-lead{font-size:15.5px}
  .btn{height:46px;padding:0 18px;font-size:14.5px}
  .price-card{padding:26px 22px}
  .case-body{padding:22px}
  .scene-card{padding:26px 22px}
  .login-card{padding:24px}
}

/* roulang page: category1 */
:root{
  --ink:#16180F;
  --pine:#1F4B41;
  --pine-deep:#14332C;
  --paper:#F7F4EC;
  --sand:#EFE8DA;
  --line:#DCD3C0;
  --copper:#9A6B3F;
  --muted:#5C5F58;
  --danger:#A8452F;
  --radius-card:12px;
  --radius-img:8px;
  --radius-btn:4px;
  --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);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input{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(--pine);outline-offset:3px;border-radius:2px}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 64px;
}
.section{padding:128px 0}
.section-tight{padding:96px 0}
.section-alt{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 品牌字标 ---------- */
.brand{display:inline-flex;align-items:baseline;gap:2px;line-height:1;white-space:nowrap}
.brand-main{font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.brand-sub{font-size:13px;font-weight:400;letter-spacing:.08em;color:var(--pine);margin-left:4px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,236,0);
  border-bottom:1px solid transparent;
  transition:background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,244,236,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;height:76px;
}
.nav-links{display:flex;align-items:center;gap:38px}
.nav-link{
  position:relative;
  font-size:14px;color:var(--muted);
  padding:6px 0;
  transition:color .22s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--ink);transition:width .28s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::before{
  content:"";position:absolute;left:50%;bottom:-7px;width:4px;height:4px;
  border-radius:50%;background:var(--copper);transform:translateX(-50%);
}
.header-actions{display:flex;align-items:center;gap:14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px}
.btn-primary{background:var(--pine);color:#F7F4EC;border-color:var(--pine)}
.btn-primary:hover{filter:brightness(1.12);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-copper{background:var(--copper);color:#FFF9F1;border-color:var(--copper)}
.btn-copper:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-block{width:100%}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;color:var(--ink);font-size:18px;
}
.drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--paper);
  display:flex;flex-direction:column;
  padding:24px 24px 48px;
  transform:translateY(-100%);
  opacity:0;visibility:hidden;
  transition:transform .38s var(--ease),opacity .3s var(--ease),visibility .3s;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;color:var(--ink);font-size:18px;
}
.drawer-links{display:flex;flex-direction:column;gap:4px}
.drawer-links a{
  font-size:22px;font-weight:600;padding:16px 0;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.drawer-links a.is-active{color:var(--pine)}
.drawer-foot{margin-top:auto;padding-top:32px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 96px;
  background:
    repeating-linear-gradient(90deg,rgba(22,24,15,.05) 0 1px,transparent 1px 120px);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--copper);
  border:1px solid var(--line);border-radius:999px;
  padding:5px 14px;background:rgba(255,255,255,.5);
}
.hero h1{
  font-size:clamp(2.4rem,5vw,4.05rem);
  font-weight:800;line-height:1.1;letter-spacing:-.01em;
  margin:24px 0 0;
}
.hero h1 .hl{color:var(--copper)}
.hero-lead{
  margin-top:24px;font-size:17px;color:var(--muted);max-width:34em;line-height:1.85;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}
.hero-note{
  margin-top:28px;display:flex;align-items:center;gap:12px;
  font-size:13px;color:var(--muted);
}
.hero-note .rule{display:block;width:40px;height:1px;background:var(--copper)}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border:1px solid var(--line);
}
.hero-figure figcaption{
  margin-top:12px;font-size:12.5px;color:var(--muted);letter-spacing:.04em;
}
.hero-figure .fig-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(247,244,236,.94);
  border:1px solid var(--line);border-radius:var(--radius-btn);
  font-size:12px;letter-spacing:.1em;color:var(--pine);
  padding:6px 12px;
}

/* ---------- 指标条 ---------- */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.35)}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:36px 28px;border-left:1px solid var(--line)}
.metric:first-child{border-left:0}
.metric-num{font-size:32px;font-weight:700;color:var(--copper);line-height:1.2;letter-spacing:-.01em}
.metric-label{margin-top:6px;font-size:13px;color:var(--muted);letter-spacing:.04em}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:760px}
.sec-index{
  display:flex;align-items:center;gap:14px;
  font-size:12.5px;letter-spacing:.18em;color:var(--copper);
}
.sec-index .bar{display:block;width:40px;height:1px;background:var(--copper)}
.sec-head h2{
  margin-top:18px;
  font-size:clamp(1.6rem,2.6vw,2.35rem);
  font-weight:700;line-height:1.28;letter-spacing:-.005em;
}
.sec-head p{margin-top:18px;color:var(--muted);font-size:16.5px;max-width:44em}

/* ---------- 步骤流程 ---------- */
.steps-layout{display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:start;margin-top:56px}
.steps-list{border-top:1px solid var(--line)}
.step{
  display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.step-no{
  font-size:26px;font-weight:700;color:var(--copper);
  line-height:1.2;letter-spacing:-.02em;
}
.step h3{font-size:1.14rem;font-weight:600;line-height:1.5}
.step p{margin-top:8px;font-size:15.5px;color:var(--muted);line-height:1.8}
.step .tip{
  display:inline-block;margin-top:12px;
  font-size:12.5px;color:var(--pine);
  background:rgba(31,75,65,.07);
  border:1px solid rgba(31,75,65,.18);
  border-radius:999px;padding:3px 12px;letter-spacing:.06em;
}
.steps-aside{position:sticky;top:104px}
.aside-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#FFFDF8;overflow:hidden;
}
.aside-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.aside-body{padding:26px 26px 28px}
.aside-body h3{font-size:1.05rem;font-weight:600}
.aside-body ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.aside-body li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);line-height:1.7;
}
.aside-body li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--copper);opacity:.75;
}
.aside-body .link-row{margin-top:22px;display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--pine);font-weight:600}
.aside-body .link-row i{transition:transform .22s var(--ease)}
.aside-body .link-row:hover i{transform:translateX(4px)}
.explain{margin-top:48px;display:grid;grid-template-columns:1fr 1fr;gap:40px}
.explain p{font-size:15.5px;color:var(--muted);line-height:1.9}
.explain p strong{color:var(--ink);font-weight:600}

/* ---------- 登录面板 ---------- */
.panel-section{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.panel-grid{display:grid;grid-template-columns:6fr 6fr;gap:64px;align-items:center}
.login-card{
  background:#FFFDF8;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;
}
.login-card h2{font-size:1.35rem;font-weight:700}
.login-card .sub{margin-top:8px;font-size:14px;color:var(--muted)}
.field{margin-top:20px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px;letter-spacing:.04em}
.field input{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:6px;background:#fff;
  font-size:15px;color:var(--ink);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field input::placeholder{color:#A9A79D}
.field input:focus{
  outline:none;border-color:var(--pine);
  box-shadow:0 0 0 3px rgba(31,75,65,.14);
}
.field.has-error input{border-color:var(--danger)}
.field .err{display:none;margin-top:8px;font-size:13px;color:var(--danger)}
.field.has-error .err{display:block}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
.check{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.check input{width:16px;height:16px;accent-color:var(--pine)}
.link-quiet{font-size:13.5px;color:var(--pine);border-bottom:1px solid rgba(31,75,65,.35);padding-bottom:1px}
.link-quiet:hover{border-color:var(--pine)}
.login-card .btn{margin-top:24px}
.login-foot{margin-top:18px;font-size:13px;color:var(--muted);text-align:right}
.form-msg{margin-top:14px;font-size:13.5px;color:var(--pine);display:none}
.form-msg.show{display:block}
.panel-copy h2{font-size:clamp(1.6rem,2.6vw,2.3rem);font-weight:700;line-height:1.3}
.panel-copy p{margin-top:20px;color:var(--muted);font-size:16px;line-height:1.9}
.panel-copy ul{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.panel-copy li{display:flex;gap:12px;font-size:15px;color:var(--ink)}
.panel-copy li i{color:var(--copper);margin-top:6px;font-size:13px}

/* ---------- 准备清单 ---------- */
.prep-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:56px}
.prep-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:#FFFDF8;padding:28px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.prep-card:hover{transform:translateY(-2px);border-color:rgba(31,75,65,.35);background:#FFFCF4}
.prep-card .no{font-size:12.5px;letter-spacing:.16em;color:var(--copper)}
.prep-card h3{margin-top:12px;font-size:1.1rem;font-weight:600}
.prep-card p{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 相关条目 ---------- */
.related-list{margin-top:48px;border-top:1px solid var(--line)}
.related-item{
  display:grid;grid-template-columns:120px 1fr 40px;align-items:center;gap:24px;
  padding:24px 8px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.related-item:hover{background:var(--sand)}
.related-item:hover .ri-title{color:var(--pine)}
.related-item:hover .ri-arrow{opacity:1;transform:translateX(0)}
.ri-tag{
  display:inline-flex;justify-content:center;
  font-size:12px;letter-spacing:.1em;color:var(--pine);
  border:1px solid rgba(31,75,65,.3);border-radius:999px;
  padding:4px 10px;white-space:nowrap;
}
.ri-title{font-size:16.5px;font-weight:600;transition:color .22s var(--ease)}
.ri-desc{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.7}
.ri-arrow{
  justify-self:end;color:var(--pine);opacity:.35;transform:translateX(-6px);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:48px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 4px;font-size:17px;font-weight:600;cursor:pointer;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--pine)}
.faq-icon{
  flex:none;width:22px;height:22px;position:relative;
  transition:transform .28s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--copper);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.5px}
.faq-icon::after{width:1.5px;height:14px;transition:opacity .28s var(--ease)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-answer{
  padding:0 4px 24px;max-width:72ch;
  font-size:15px;color:var(--muted);line-height:1.9;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--pine-deep);color:var(--paper);
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg,rgba(247,244,236,.07) 0 1px,transparent 1px 120px);
  pointer-events:none;
}
.cta-inner{
  position:relative;display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;
  padding:88px 0;
}
.cta-inner h2{font-size:clamp(1.6rem,2.8vw,2.4rem);font-weight:700;line-height:1.3;color:#F7F4EC}
.cta-inner p{margin-top:16px;color:rgba(247,244,236,.72);font-size:16px;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-actions .btn-ghost{color:#F7F4EC;border-color:rgba(247,244,236,.55)}
.cta-actions .btn-ghost:hover{background:#F7F4EC;color:var(--pine-deep);border-color:#F7F4EC}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--muted);line-height:1.8;max-width:20em}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--ink);
  margin-bottom:20px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color .22s var(--ease)}
.footer-col a:hover{color:var(--ink)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:24px 0 32px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.footer-bottom .kw{letter-spacing:.05em}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 40px}
  .section{padding:96px 0}
  .section-tight{padding:80px 0}
  .nav-links{gap:24px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero{padding:56px 0 72px}
  .steps-layout{grid-template-columns:1fr;gap:44px}
  .steps-aside{position:static}
  .panel-grid{grid-template-columns:1fr;gap:44px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 20px}
  .nav-links{display:none}
  .header-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{height:68px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .metrics-grid{grid-template-columns:1fr 1fr}
  .metric{padding:26px 20px}
  .metric:nth-child(3){border-left:0}
  .metric:nth-child(3),.metric:nth-child(4){border-top:1px solid var(--line)}
  .metric-num{font-size:26px}
  .prep-grid{grid-template-columns:1fr}
  .explain{grid-template-columns:1fr;gap:24px}
  .step{grid-template-columns:48px 1fr;gap:14px}
  .step-no{font-size:22px}
  .related-item{grid-template-columns:1fr;gap:10px;padding:22px 4px}
  .ri-arrow{display:none}
  .ri-tag{justify-self:start}
  .footer-grid{grid-template-columns:1fr;gap:36px;padding-bottom:40px}
  .footer-bottom{flex-direction:column}
  .login-card{padding:24px}
  .cta-inner{padding:64px 0}
}
@media (max-width:520px){
  .hero h1{font-size:2.05rem}
  .hero-actions .btn{width:100%}
  .hero-note{font-size:12.5px}
  .row-between{flex-wrap:wrap}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink:#16180F;
  --pine:#1F4B41;
  --pine-deep:#14332C;
  --paper:#F7F4EC;
  --sand:#EFE8DA;
  --line:#DCD3C0;
  --copper:#9A6B3F;
  --muted:#5C5F58;
  --danger:#A8452F;
  --radius-card:12px;
  --radius-img:8px;
  --radius-btn:4px;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{padding-left:1.35em;}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
:focus-visible{outline:2px solid var(--pine);outline-offset:3px;border-radius:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 64px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,236,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-scrolled{background:rgba(247,244,236,.98);border-bottom-color:var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:78px;}
.brand{display:inline-flex;align-items:baseline;gap:7px;white-space:nowrap;}
.brand-main{font-size:24px;font-weight:800;letter-spacing:.06em;color:var(--ink);}
.brand-sub{font-size:12.5px;font-weight:400;letter-spacing:.14em;color:var(--muted);}
.brand:hover .brand-main{color:var(--pine);}
.brand-main{transition:color 220ms var(--ease);}
.nav-links{display:flex;align-items:center;gap:36px;}
.nav-link{position:relative;font-size:14px;color:var(--muted);padding:8px 0;transition:color 220ms var(--ease);}
.nav-link::after{content:"";position:absolute;left:0;bottom:2px;height:1px;width:0;background:var(--ink);transition:width 260ms var(--ease);}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::before{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-4px;width:4px;height:4px;border-radius:50%;background:var(--copper);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;
  background:var(--pine);color:#F7F4EC;border-radius:var(--radius-btn);
  font-size:14px;font-weight:500;letter-spacing:.02em;
  transition:filter 220ms var(--ease),transform 220ms var(--ease);
}
.nav-cta:hover{filter:brightness(1.1);transform:translateY(-1px);}
.nav-cta:active{transform:translateY(0);}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;border-radius:4px;}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--ink);transition:transform 220ms var(--ease);}
.drawer{position:fixed;inset:0;z-index:90;background:var(--paper);display:none;flex-direction:column;padding:22px 20px 40px;}
.drawer.is-open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:56px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;font-size:26px;line-height:1;color:var(--muted);}
.drawer-links{display:flex;flex-direction:column;gap:2px;padding:28px 0;flex:1;}
.drawer-links a{font-size:22px;font-weight:600;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink);}
.drawer-links a:hover{color:var(--pine);}
.drawer-cta{height:48px;width:100%;}

/* ---------- article head ---------- */
.article-hero{padding:36px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);transition:color 200ms var(--ease);}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);}
.article-head{padding:26px 0 0;max-width:900px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 13px;
  border:1px solid var(--line);border-radius:999px;background:var(--sand);
  font-size:12px;letter-spacing:.14em;color:var(--pine);
}
.article-title{
  font-size:clamp(1.9rem,3.6vw,3rem);
  line-height:1.24;font-weight:800;letter-spacing:-.01em;
  margin:18px 0 18px;
  animation:rise 620ms var(--ease) both;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13px;color:var(--muted);
  padding-bottom:24px;border-bottom:1px solid var(--line);
  animation:rise 620ms var(--ease) 100ms both;
}
.meta-row span{display:inline-flex;align-items:center;gap:6px;}
.meta-row span::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--copper);opacity:.7;}
@keyframes rise{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}

/* ---------- article body ---------- */
.article-wrap{padding:40px 0 96px;}
.article-grid{display:grid;grid-template-columns:minmax(0,760px) 220px;gap:64px;align-items:start;}
.article-cover{margin-bottom:36px;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line);}
.article-cover figcaption{font-size:13px;color:var(--muted);margin-top:10px;}
.article-body{counter-reset:sec;font-size:16.5px;line-height:1.85;color:#20221a;max-width:760px;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  counter-increment:sec;
  margin:2.4em 0 .8em;
  font-size:clamp(1.35rem,2.2vw,1.7rem);
  font-weight:700;line-height:1.4;color:var(--ink);
  scroll-margin-top:100px;
}
.article-body h2::before{
  content:counter(sec,decimal-leading-zero);
  display:inline-block;margin-right:12px;
  color:var(--copper);font-size:14px;letter-spacing:.1em;font-weight:600;
  vertical-align:3px;
}
.article-body h3{
  margin:1.9em 0 .6em;font-size:1.16rem;font-weight:600;line-height:1.5;
  color:var(--ink);scroll-margin-top:100px;
}
.article-body h4{margin:1.6em 0 .5em;font-size:1.02rem;font-weight:600;}
.article-body a{color:var(--pine);border-bottom:1px solid rgba(31,75,65,.35);transition:border-color 200ms var(--ease),color 200ms var(--ease);}
.article-body a:hover{color:var(--pine-deep);border-bottom-color:var(--pine-deep);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body li{margin:.35em 0;}
.article-body ul li::marker{color:var(--copper);}
.article-body ol li::marker{color:var(--copper);font-weight:600;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--copper);background:var(--sand);
  color:var(--muted);font-size:15.5px;border-radius:0 6px 6px 0;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{margin:1.6em 0 10px;border:1px solid var(--line);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:left;margin-top:8px;}
.article-body table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:var(--sand);font-weight:600;}
.article-body code{background:var(--sand);padding:2px 6px;border-radius:3px;font-size:.92em;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:102px;}
.toc{border-left:1px solid var(--line);padding-left:20px;}
.toc-title{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{font-size:13.5px;line-height:1.6;color:var(--muted);padding:5px 0;transition:color 200ms var(--ease);}
.toc-list a.is-sub{padding-left:12px;font-size:13px;}
.toc-list a:hover{color:var(--pine);}
.toc-list a.is-active{color:var(--ink);font-weight:600;}
.toc-empty{font-size:13px;line-height:1.7;color:var(--muted);}
.toc-cta{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
.toc-cta a{display:inline-flex;margin-top:10px;color:var(--pine);font-weight:600;border-bottom:1px solid rgba(31,75,65,.3);}

/* ---------- empty ---------- */
.empty-state{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--sand);padding:64px 32px;text-align:center;
}
.empty-state h2{font-size:1.35rem;font-weight:700;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:14.5px;margin-bottom:22px;}

/* ---------- tools / related ---------- */
.article-tools{margin-top:56px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag-row a{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border:1px solid var(--line);
  border-radius:999px;font-size:12.5px;color:var(--muted);transition:all 220ms var(--ease);
}
.tag-row a:hover{border-color:var(--pine);color:var(--pine);background:#fff;}
.back-link{font-size:14px;color:var(--pine);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.back-link:hover{color:var(--pine-deep);}
.related-section{padding:0 0 96px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;}
.section-title{font-size:clamp(1.4rem,2.2vw,1.85rem);font-weight:700;line-height:1.3;}
.row-list{border-top:1px solid var(--line);}
.row{
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:22px 14px;border-bottom:1px solid var(--line);
  transition:background 220ms var(--ease),transform 220ms var(--ease);
}
.row:hover{background:var(--sand);transform:translateY(-1px);}
.row-tag{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--copper);margin-bottom:8px;}
.row-title{font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink);transition:color 220ms var(--ease);}
.row:hover .row-title{color:var(--pine);}
.row-desc{font-size:13.5px;color:var(--muted);line-height:1.7;margin-top:6px;}
.row-date{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap;align-self:start;padding-top:4px;}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 96px;}
.cta-band{
  background:var(--pine-deep);color:#F3EFE4;border-radius:var(--radius-card);
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(247,244,236,.07) 0 1px,transparent 1px 120px);
}
.cta-title{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;line-height:1.35;margin-bottom:12px;position:relative;}
.cta-text{font-size:14.5px;line-height:1.8;color:rgba(243,239,228,.72);max-width:34em;position:relative;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:500;letter-spacing:.02em;
  border:1px solid transparent;transition:all 220ms var(--ease);
}
.btn-primary{background:var(--pine);color:#F7F4EC;}
.btn-primary:hover{filter:brightness(1.1);transform:translateY(-1px);}
.btn-copper{background:var(--copper);color:#fff;}
.btn-copper:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-ghost{border-color:rgba(243,239,228,.45);color:#F3EFE4;}
.btn-ghost:hover{background:#F3EFE4;color:var(--pine-deep);}
.btn:active{transform:translateY(0);}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:64px 0 30px;background:var(--paper);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--muted);margin-top:16px;max-width:22em;}
.footer-col h4{font-size:13px;letter-spacing:.16em;color:var(--muted);font-weight:600;margin-bottom:16px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);line-height:1.7;transition:color 200ms var(--ease);}
.footer-col a:hover{color:var(--ink);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.footer-bottom .kw{letter-spacing:.04em;}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .article-grid{grid-template-columns:1fr;gap:44px;}
  .sidebar{position:static;order:2;}
  .toc{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:20px;}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:6px 18px;}
}
@media (max-width:1024px){
  .container{padding:0 40px;}
  .nav-links{gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{padding:44px;}
}
@media (max-width:880px){
  .nav-links,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:70px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .article-hero{padding-top:24px;}
  .article-wrap{padding:28px 0 64px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:2em;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px;gap:26px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;min-width:150px;}
  .related-section,.cta-section{padding-bottom:64px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
  .row{grid-template-columns:1fr;gap:8px;}
  .row-date{padding-top:0;order:-1;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (max-width:520px){
  .brand-main{font-size:21px;}
  .brand-sub{font-size:11px;letter-spacing:.1em;}
  .article-title{font-size:1.6rem;line-height:1.32;}
  .meta-row{gap:6px 16px;font-size:12.5px;}
  .article-body{font-size:15.5px;}
  .article-body blockquote{padding:14px 16px;}
  .article-tools{flex-direction:column;align-items:flex-start;}
  .btn{height:46px;font-size:14.5px;padding:0 18px;}
  .empty-state{padding:44px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink:#16180F;
  --pine:#1F4B41;
  --pine-deep:#14332C;
  --paper:#F7F4EC;
  --sand:#EFE8DA;
  --line:#DCD3C0;
  --copper:#9A6B3F;
  --muted:#5C5F58;
  --danger:#A8452F;
  --white:#FFFFFF;
  --radius-card:12px;
  --radius-img:8px;
  --radius-btn:4px;
  --radius-input:6px;
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow-soft:0 1px 0 rgba(22,24,15,.04);
}
*,*::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:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--pine);outline-offset:3px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 64px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,244,236,0);
  border-bottom:1px solid transparent;
  transition:background 220ms var(--ease),border-color 220ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,244,236,.98);
  border-bottom-color:var(--line);
  backdrop-filter:blur(8px);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;height:78px}
.brand{display:inline-flex;align-items:baseline;gap:6px;letter-spacing:-.01em;white-space:nowrap}
.brand-main{font-size:21px;font-weight:800;color:var(--ink)}
.brand-sub{font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.1em}
.nav-links{display:flex;align-items:center;gap:40px}
.nav-link{
  position:relative;font-size:14px;color:var(--ink);padding:6px 0;
  transition:color 220ms var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;
  background:currentColor;transition:width 220ms var(--ease);
}
.nav-link:hover{color:var(--pine)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--pine);font-weight:700}
.nav-link.is-active::after{width:100%;background:var(--pine)}
.nav-link.is-active::before{
  content:"";position:absolute;left:50%;bottom:-10px;width:4px;height:4px;
  border-radius:50%;background:var(--copper);transform:translateX(-50%);
}
.header-actions{display:flex;align-items:center;gap:14px}

.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.menu-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:background 220ms var(--ease)}
.menu-toggle:hover{border-color:var(--pine);background:var(--sand)}

.mobile-drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  padding:24px 22px 40px;display:flex;flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer[hidden]{display:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.drawer-close:hover{border-color:var(--pine);background:var(--sand)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  font-size:22px;font-weight:600;padding:16px 0;border-bottom:1px solid var(--line);
  color:var(--ink);transition:color 220ms var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--pine)}
.drawer-cta{margin-top:28px;width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease),filter 220ms var(--ease);
}
.btn-primary{background:var(--pine);color:#F7F4EC;box-shadow:var(--shadow-soft)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-copper{background:var(--copper);color:#fff}
.btn-copper:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-on-dark{border-color:rgba(247,244,236,.5);color:#F7F4EC}
.btn-on-dark:hover{background:rgba(247,244,236,.12);border-color:#F7F4EC}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:104px 0 84px;
  background-image:repeating-linear-gradient(90deg,rgba(22,24,15,.06) 0 1px,transparent 1px 120px);
  border-bottom:1px solid var(--line);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border:1px solid var(--line);border-radius:999px;
  background:var(--sand);color:var(--muted);
  font-size:12.5px;letter-spacing:.14em;
}
.eyebrow i{font-size:10px;color:var(--copper)}
.hero-title{
  margin-top:26px;
  font-size:clamp(2.4rem,5vw,4.2rem);
  font-weight:800;line-height:1.08;letter-spacing:-.01em;
  max-width:16em;
  animation:riseIn 600ms var(--ease) both;
}
.hero-title-sub{
  display:block;margin-top:20px;
  font-size:.44em;font-weight:600;line-height:1.45;letter-spacing:0;color:var(--muted);
  animation:riseIn 600ms 120ms var(--ease) both;
}
.hero-title em{font-style:normal;color:var(--copper)}
.hero-lead{
  margin-top:26px;max-width:44em;font-size:17px;color:var(--muted);
  animation:riseIn 600ms 220ms var(--ease) both;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}
.hero-rule{
  height:1px;background:var(--line);margin-top:56px;
  transform-origin:left;animation:ruleIn 480ms 320ms var(--ease) both;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:56px;margin-top:34px}
.hero-meta li{display:flex;flex-direction:column;gap:2px}
.hero-meta .num{font-size:32px;font-weight:700;color:var(--copper);line-height:1.1;letter-spacing:-.01em}
.hero-meta .lbl{font-size:13px;color:var(--muted);letter-spacing:.06em}

@keyframes riseIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes ruleIn{from{transform:scaleX(0)}to{transform:scaleX(1)}}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--sand);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:48px}
.sec-num{
  display:flex;align-items:center;gap:12px;
  color:var(--copper);font-size:13px;font-weight:700;letter-spacing:.18em;
}
.sec-num::after{content:"";width:40px;height:1px;background:var(--copper)}
.section-title{
  margin-top:14px;
  font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:700;line-height:1.25;letter-spacing:-.01em;
}
.section-sub{margin-top:14px;color:var(--muted);max-width:62ch;font-size:16px}

/* ---------- feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.feature-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 32px 30px;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
}
.feature-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,75,65,.35);
  background:#FCFAF4;
}
.feature-index{display:block;font-size:13px;font-weight:700;color:var(--copper);letter-spacing:.16em}
.feature-card h3{margin:14px 0 10px;font-size:1.2rem;font-weight:600;line-height:1.4}
.feature-card p{color:var(--muted);font-size:15.5px;line-height:1.8}

.wide-figure{margin-top:44px}
.wide-figure img{
  width:100%;height:clamp(200px,24vw,320px);object-fit:cover;
  border-radius:var(--radius-img);border:1px solid var(--line);
}
.wide-figure figcaption{margin-top:12px;font-size:13px;color:var(--muted)}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--white);
}
table{width:100%;border-collapse:collapse;min-width:660px}
thead th{
  padding:16px 24px;text-align:left;background:var(--sand);
  font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.12em;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:18px 24px;border-bottom:1px solid var(--line);font-size:15px;vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr{transition:background 220ms var(--ease)}
tbody tr:hover{background:#FCFAF4}
td .cell-title{font-weight:600;color:var(--ink)}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 12px;border:1px solid var(--line);border-radius:999px;
  font-size:12.5px;color:var(--muted);letter-spacing:.14em;background:var(--paper);
}
.tag-strong{border-color:rgba(154,107,63,.45);color:var(--copper);background:#FBF4EC}

/* ---------- tiers ---------- */
.tiers{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--white);
}
.tier{
  padding:34px 32px;border-right:1px solid var(--line);
  transition:background 220ms var(--ease);
}
.tier:last-child{border-right:0}
.tier-name{display:flex;align-items:center;gap:10px;font-size:1.08rem;font-weight:700}
.tier-name i{font-size:14px;color:var(--copper)}
.tier-desc{margin-top:10px;font-size:14px;color:var(--muted);min-height:44px}
.tier-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.tier-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--muted);line-height:1.7}
.tier-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-left:1px solid var(--copper);border-bottom:1px solid var(--copper);
  transform:rotate(-45deg);
}
.tier.featured{background:var(--pine-deep);color:#F3F0E6}
.tier.featured .tier-desc,.tier.featured .tier-list li{color:rgba(243,240,230,.76)}
.tier.featured .tier-list li::before{border-color:#C79A6B}
.badge-recommend{
  display:inline-flex;align-items:center;
  padding:2px 10px;border-radius:999px;background:var(--copper);color:#fff;
  font-size:11.5px;letter-spacing:.14em;font-weight:600;
}
.tier.featured .tier-name i{color:#C79A6B}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:24px 0;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
  transition:color 220ms var(--ease);
}
.faq-q:hover{color:var(--pine)}
.faq-q .faq-icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;
  transition:transform 280ms var(--ease);
}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{
  content:"";position:absolute;background:var(--copper);border-radius:1px;
}
.faq-q .faq-icon::before{left:0;top:9px;width:20px;height:1.6px}
.faq-q .faq-icon::after{left:9px;top:0;width:1.6px;height:20px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a-inner{padding:0 0 24px;max-width:72ch;color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- cta ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  background:var(--pine-deep);
  color:#F3F0E6;
  padding:64px;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  opacity:.18;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.4fr .9fr;gap:48px;align-items:center}
.cta h2{font-size:clamp(1.6rem,2.6vw,2.3rem);font-weight:700;line-height:1.28}
.cta p{margin-top:16px;color:rgba(243,240,230,.8);font-size:15.5px;max-width:52ch}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch}
.cta-actions .btn{width:100%}
.cta-note{font-size:13px;color:rgba(243,240,230,.6);text-align:center;margin-top:4px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--paper);padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:40px}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:22em;line-height:1.8}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--muted);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--muted);transition:color 220ms var(--ease)}
.footer-col a:hover{color:var(--ink)}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.footer-bottom .kw{letter-spacing:.06em}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 40px}
  .nav-links{display:none}
  .menu-toggle{display:inline-flex}
  .section{padding:80px 0}
  .page-hero{padding:80px 0 68px}
  .cta{padding:48px}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .container{padding:0 28px}
  .section{padding:64px 0}
  .feature-grid{grid-template-columns:1fr}
  .tiers{grid-template-columns:1fr}
  .tier{border-right:0;border-bottom:1px solid var(--line)}
  .tier:last-child{border-bottom:0}
  .tier.featured{order:-1}
  .hero-meta{gap:32px}
  .hero-meta .num{font-size:26px}
  .header-inner{height:70px}
  .site-footer{margin-top:64px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  body{font-size:16px}
  .hero-title{max-width:none}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:24px 28px}
  .cta{padding:32px 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .feature-card{padding:26px 22px}
  .tier{padding:28px 22px}
  .header-actions .btn{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
    --ink:#16180F;
    --pine:#1F4B41;
    --pine-deep:#14332C;
    --paper:#F7F4EC;
    --sand:#EFE8DA;
    --line:#DCD3C0;
    --copper:#9A6B3F;
    --muted:#5C5F58;
    --danger:#A8452F;
    --radius:12px;
    --radius-sm:8px;
    --radius-btn:4px;
    --ease:cubic-bezier(.22,1,.36,1);
    --space-section:128px;
  }

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

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

  .site-body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    letter-spacing:0.005em;
    -webkit-font-smoothing:antialiased;
  }

  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  ::selection{background:rgba(31,75,65,.16);}

  a:focus-visible,
  button:focus-visible,
  input:focus-visible,
  select:focus-visible,
  textarea:focus-visible{
    outline:2px solid var(--pine);
    outline-offset:3px;
  }

  .wrap{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:64px;
    padding-right:64px;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(247,244,236,0);
    border-bottom:1px solid transparent;
    transition:background 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,244,236,.97);
    border-bottom-color:var(--line);
    box-shadow:0 1px 0 rgba(22,24,15,.02);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    height:84px;
  }
  .brand{
    display:inline-flex;
    align-items:baseline;
    gap:6px;
    white-space:nowrap;
    transition:opacity 220ms var(--ease);
  }
  .brand:hover{opacity:.78;}
  .brand-main{
    font-size:23px;
    font-weight:800;
    letter-spacing:-0.02em;
    color:var(--ink);
  }
  .brand-sub{
    font-size:12.5px;
    font-weight:400;
    letter-spacing:.22em;
    color:var(--muted);
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:40px;
    margin-left:auto;
    margin-right:8px;
  }
  .nav-link{
    position:relative;
    font-size:14px;
    color:var(--muted);
    padding:6px 0 8px;
    transition:color 220ms var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:0;
    width:0;
    height:1px;
    background:var(--ink);
    transition:width 220ms var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{width:100%;}
  .nav-link.is-active{
    color:var(--ink);
    font-weight:700;
  }
  .nav-link.is-active::after{
    width:100%;
    background:var(--copper);
  }
  .nav-link.is-active::before{
    content:"";
    position:absolute;
    left:50%;
    bottom:-6px;
    width:4px;
    height:4px;
    border-radius:50%;
    background:var(--copper);
    transform:translateX(-50%);
  }

  .header-actions{display:flex;align-items:center;gap:14px;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 26px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:14.5px;
    font-weight:600;
    letter-spacing:.02em;
    cursor:pointer;
    transition:background 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease),filter 220ms var(--ease);
  }
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-primary{
    background:var(--pine);
    color:#F7F4EC;
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.98);}
  .btn-ghost{
    background:transparent;
    color:var(--ink);
    border-color:var(--ink);
  }
  .btn-ghost:hover{background:var(--ink);color:var(--paper);}
  .btn-copper{
    background:var(--copper);
    color:#FBF8F1;
  }
  .btn-copper:hover{filter:brightness(1.07);transform:translateY(-1px);}

  .nav-toggle{
    display:none;
    width:42px;
    height:42px;
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    background:transparent;
    cursor:pointer;
    padding:0;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:4px;
  }
  .nav-toggle span{display:block;width:17px;height:1.5px;background:var(--ink);transition:transform 220ms var(--ease),opacity 220ms var(--ease);}

  .nav-drawer{
    position:fixed;
    inset:0;
    z-index:80;
    background:var(--paper);
    padding:28px 24px 40px;
    display:flex;
    flex-direction:column;
    transform:translateY(-100%);
    opacity:0;
    visibility:hidden;
    transition:transform 320ms var(--ease),opacity 240ms var(--ease),visibility 0s linear 320ms;
  }
  .nav-drawer.is-open{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    transition:transform 320ms var(--ease),opacity 240ms var(--ease),visibility 0s linear 0s;
  }
  .drawer-close{
    align-self:flex-end;
    width:44px;
    height:44px;
    border:1px solid var(--line);
    border-radius:50%;
    background:transparent;
    font-size:24px;
    line-height:1;
    cursor:pointer;
    color:var(--ink);
  }
  .drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:44px;}
  .drawer-nav a{
    font-size:22px;
    font-weight:600;
    padding:14px 0;
    border-bottom:1px solid var(--line);
    color:var(--ink);
  }
  .drawer-nav a.is-active{color:var(--copper);}
  .drawer-foot{margin-top:auto;padding-top:32px;font-size:12.5px;color:var(--muted);letter-spacing:.06em;}

  /* ---------- 通用板块 ---------- */
  .section{padding-top:var(--space-section);}
  .section-tight{padding-top:80px;}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:12.5px;
    letter-spacing:.18em;
    color:var(--copper);
    font-weight:600;
    text-transform:none;
  }
  .eyebrow::before{
    content:"";
    width:26px;
    height:1px;
    background:var(--copper);
    display:inline-block;
  }
  .sec-head{max-width:760px;}
  .sec-index{
    display:flex;
    align-items:center;
    gap:12px;
    color:var(--copper);
    font-size:13px;
    font-weight:700;
    letter-spacing:.16em;
  }
  .sec-index::after{
    content:"";
    width:40px;
    height:1px;
    background:var(--line);
  }
  h2.sec-title{
    margin-top:14px;
    font-size:clamp(1.6rem,2.6vw,2.4rem);
    line-height:1.25;
    font-weight:700;
    letter-spacing:-0.01em;
  }
  .sec-desc{
    margin-top:18px;
    color:var(--muted);
    font-size:16px;
    max-width:72ch;
  }

  /* ---------- 页头 ---------- */
  .page-head{
    position:relative;
    padding-top:96px;
    padding-bottom:72px;
    text-align:center;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .page-head::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(to right,rgba(22,24,15,.06) 1px,transparent 1px);
    background-size:120px 100%;
    opacity:.55;
    pointer-events:none;
  }
  .page-head-inner{position:relative;}
  .page-head .eyebrow{justify-content:center;}
  .page-head .eyebrow::before{display:none;}
  h1.page-title{
    margin-top:22px;
    font-size:clamp(2.1rem,4.4vw,3.5rem);
    line-height:1.14;
    font-weight:800;
    letter-spacing:-0.015em;
  }
  h1.page-title .hl{color:var(--copper);}
  .page-lead{
    margin:24px auto 0;
    max-width:640px;
    color:var(--muted);
    font-size:16.5px;
  }
  .page-meta{
    margin-top:34px;
    display:flex;
    flex-wrap:wrap;
    justify-content:center;
    gap:10px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    height:30px;
    padding:0 14px;
    border:1px solid var(--line);
    border-radius:999px;
    font-size:12.5px;
    letter-spacing:.12em;
    color:var(--muted);
    background:transparent;
    transition:border-color 220ms var(--ease),color 220ms var(--ease),background 220ms var(--ease);
  }
  .tag:hover{border-color:var(--pine);color:var(--pine);background:rgba(31,75,65,.05);}

  /* ---------- 指标条 ---------- */
  .metrics{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .metric{
    padding:34px 28px 34px 0;
    border-left:1px solid var(--line);
    padding-left:28px;
  }
  .metric:first-child{border-left:none;padding-left:0;}
  .metric-num{
    font-size:clamp(1.7rem,2.6vw,2.15rem);
    font-weight:700;
    color:var(--copper);
    letter-spacing:-0.01em;
    line-height:1.2;
  }
  .metric-num small{font-size:15px;font-weight:600;margin-left:4px;}
  .metric-label{margin-top:8px;font-size:13px;color:var(--muted);letter-spacing:.04em;}

  /* ---------- FAQ ---------- */
  .faq-tools{
    display:flex;
    flex-wrap:wrap;
    gap:16px;
    align-items:center;
    justify-content:space-between;
    margin-top:44px;
    padding-bottom:20px;
    border-bottom:1px solid var(--line);
  }
  .search-box{
    position:relative;
    flex:1 1 320px;
    max-width:420px;
  }
  .search-box input{
    width:100%;
    height:46px;
    padding:0 16px 0 44px;
    border:1px solid var(--line);
    border-radius:6px;
    background:#FFFDF8;
    font-size:14.5px;
    color:var(--ink);
    transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .search-box input::placeholder{color:#98998F;}
  .search-box input:focus{
    outline:none;
    border-color:var(--pine);
    box-shadow:0 0 0 3px rgba(31,75,65,.14);
  }
  .search-box svg{
    position:absolute;
    left:14px;
    top:50%;
    transform:translateY(-50%);
    width:17px;
    height:17px;
    stroke:var(--muted);
    fill:none;
    stroke-width:1.6;
  }
  .faq-hint{font-size:13px;color:var(--muted);letter-spacing:.04em;}

  .faq-list{margin-top:8px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    padding:26px 4px;
    background:transparent;
    border:none;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--ink);
    cursor:pointer;
    transition:color 220ms var(--ease);
  }
  .faq-q:hover{color:var(--pine);}
  .faq-icon{
    position:relative;
    flex:0 0 16px;
    width:16px;
    height:16px;
    transition:transform 280ms var(--ease);
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--copper);
    border-radius:1px;
  }
  .faq-icon::before{top:7px;left:0;width:16px;height:2px;}
  .faq-icon::after{left:7px;top:0;width:2px;height:16px;}
  .faq-item.is-open .faq-q{color:var(--pine);}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);}
  .faq-a{
    display:grid;
    grid-template-rows:0fr;
    transition:grid-template-rows 280ms var(--ease);
  }
  .faq-a-inner{overflow:hidden;}
  .faq-a p{
    padding:0 56px 28px 4px;
    font-size:15px;
    color:var(--muted);
    max-width:72ch;
    line-height:1.85;
  }
  .faq-item.is-open .faq-a{grid-template-rows:1fr;}
  .faq-item.is-hidden{display:none;}
  .faq-empty{
    display:none;
    padding:40px 24px;
    text-align:center;
    border:1px dashed var(--line);
    border-radius:var(--radius);
    color:var(--muted);
    font-size:14.5px;
    margin-top:24px;
  }
  .faq-empty.is-show{display:block;}

  /* ---------- 联系表单 ---------- */
  .contact-grid{
    display:grid;
    grid-template-columns:0.85fr 1.15fr;
    gap:48px;
    align-items:start;
  }
  .contact-card{
    background:var(--sand);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:36px;
  }
  .contact-card h3{
    font-size:1.2rem;
    font-weight:700;
    margin-bottom:10px;
  }
  .contact-card p.lead{
    font-size:14.5px;
    color:var(--muted);
    margin-bottom:26px;
  }
  .contact-list{display:flex;flex-direction:column;gap:20px;}
  .contact-row{
    display:flex;
    gap:14px;
    padding-bottom:20px;
    border-bottom:1px solid rgba(220,211,192,.9);
  }
  .contact-row:last-child{border-bottom:none;padding-bottom:0;}
  .contact-row .k{
    flex:0 0 78px;
    font-size:12.5px;
    letter-spacing:.14em;
    color:var(--copper);
    font-weight:600;
    padding-top:2px;
  }
  .contact-row .v{font-size:14.5px;color:var(--ink);line-height:1.75;}
  .contact-row .v span{display:block;color:var(--muted);font-size:13px;}

  .form-panel{
    background:#FFFDF8;
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:40px;
    transition:border-color 220ms var(--ease);
  }
  .form-panel:hover{border-color:rgba(31,75,65,.28);}
  .form-panel h3{font-size:1.2rem;font-weight:700;margin-bottom:8px;}
  .form-panel .form-sub{font-size:14px;color:var(--muted);margin-bottom:28px;}
  .field{margin-bottom:22px;}
  .field label{
    display:block;
    font-size:13px;
    letter-spacing:.06em;
    color:var(--muted);
    margin-bottom:8px;
  }
  .field label .req{color:var(--danger);margin-left:3px;}
  .field input,
  .field select,
  .field textarea{
    width:100%;
    height:46px;
    padding:0 14px;
    font-size:14.5px;
    font-family:inherit;
    color:var(--ink);
    background:#fff;
    border:1px solid var(--line);
    border-radius:6px;
    transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .field textarea{
    height:auto;
    min-height:120px;
    padding:12px 14px;
    line-height:1.75;
    resize:vertical;
  }
  .field input:focus,
  .field select:focus,
  .field textarea:focus{
    outline:none;
    border-color:var(--pine);
    box-shadow:0 0 0 3px rgba(31,75,65,.14);
  }
  .field.has-error input,
  .field.has-error select,
  .field.has-error textarea{
    border-color:var(--danger);
    box-shadow:0 0 0 3px rgba(168,69,47,.12);
  }
  .field-error{
    display:none;
    margin-top:7px;
    font-size:13px;
    color:var(--danger);
  }
  .field.has-error .field-error{display:block;}
  .form-foot{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:16px;
    margin-top:6px;
  }
  .form-foot .btn{flex:0 0 auto;}
  .form-note{font-size:12.5px;color:var(--muted);}
  .form-ok{
    display:none;
    margin-top:20px;
    padding:14px 18px;
    border:1px solid rgba(31,75,65,.3);
    background:rgba(31,75,65,.06);
    border-radius:6px;
    font-size:14px;
    color:var(--pine);
  }
  .form-ok.is-show{display:block;}

  /* ---------- 资料卡 ---------- */
  .doc-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;}
  .doc-card{
    display:flex;
    flex-direction:column;
    background:#FFFDF8;
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    transition:transform 220ms var(--ease),border-color 220ms var(--ease),background 220ms var(--ease);
  }
  .doc-card:hover{
    transform:translateY(-2px);
    border-color:rgba(31,75,65,.35);
    background:#FFFEFB;
  }
  .doc-thumb{
    position:relative;
    aspect-ratio:16/10;
    overflow:hidden;
    background:var(--sand);
  }
  .doc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 220ms var(--ease);}
  .doc-card:hover .doc-thumb img{transform:scale(1.03);}
  .doc-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1;}
  .doc-tag{
    font-size:12px;
    letter-spacing:.14em;
    color:var(--copper);
    font-weight:600;
  }
  .doc-body h3{
    margin-top:10px;
    font-size:1.05rem;
    font-weight:700;
    line-height:1.5;
  }
  .doc-body p{
    margin-top:10px;
    font-size:14px;
    color:var(--muted);
    line-height:1.8;
  }
  .doc-link{
    margin-top:auto;
    padding-top:20px;
    font-size:13.5px;
    color:var(--pine);
    font-weight:600;
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .doc-link .arrow{transition:transform 220ms var(--ease);display:inline-block;}
  .doc-card:hover .doc-link .arrow{transform:translateX(4px);}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:var(--space-section);
    background:var(--pine-deep);
    color:var(--paper);
    position:relative;
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(to right,rgba(247,244,236,.09) 1px,transparent 1px);
    background-size:120px 100%;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:48px;
    padding-top:80px;
    padding-bottom:80px;
  }
  .cta-inner h2{
    font-size:clamp(1.5rem,2.4vw,2.05rem);
    font-weight:700;
    line-height:1.3;
    letter-spacing:-0.01em;
  }
  .cta-inner p{
    margin-top:14px;
    color:rgba(247,244,236,.72);
    font-size:15px;
    max-width:52ch;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto;}
  .btn-paper{background:var(--paper);color:var(--ink);}
  .btn-paper:hover{filter:brightness(1.04);transform:translateY(-1px);}
  .btn-outline-light{border-color:rgba(247,244,236,.5);color:var(--paper);background:transparent;}
  .btn-outline-light:hover{background:rgba(247,244,236,.12);border-color:var(--paper);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--paper);
    border-top:1px solid var(--line);
    padding:72px 0 30px;
    margin-top:0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.1fr;
    gap:40px;
    padding-bottom:52px;
  }
  .footer-brand .brand{margin-bottom:16px;}
  .footer-brand p{font-size:14px;color:var(--muted);max-width:24ch;}
  .footer-col h4{
    font-size:13px;
    font-weight:600;
    letter-spacing:.16em;
    color:var(--ink);
    margin-bottom:18px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col li{font-size:14px;color:var(--muted);}
  .footer-col a{
    color:var(--muted);
    font-size:14px;
    transition:color 220ms var(--ease);
  }
  .footer-col a:hover{color:var(--ink);}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    justify-content:space-between;
    align-items:center;
    padding-top:26px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }
  .footer-bottom .kw{letter-spacing:.06em;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    :root{--space-section:96px;}
    .wrap{padding-left:40px;padding-right:40px;}
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-inner{height:76px;}
    .contact-grid{grid-template-columns:1fr;gap:32px;}
    .doc-cards{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
    .page-head{padding-top:72px;padding-bottom:56px;}
    .cta-inner{flex-direction:column;align-items:flex-start;gap:32px;padding-top:64px;padding-bottom:64px;}
    .metrics{grid-template-columns:1fr 1fr;}
    .metric{border-left:1px solid var(--line);padding-left:24px;}
    .metric:nth-child(odd){border-left:none;padding-left:0;}
    .metric:nth-child(n+3){border-top:1px solid var(--line);}
  }
  @media (max-width:767px){
    :root{--space-section:64px;}
    .wrap{padding-left:20px;padding-right:20px;}
    .brand-main{font-size:20px;}
    .brand-sub{font-size:11px;letter-spacing:.18em;}
    .header-actions .btn-primary{display:none;}
    .doc-cards{grid-template-columns:1fr;}
    .faq-q{font-size:16px;padding:22px 0;gap:16px;}
    .faq-a p{padding:0 24px 24px 0;font-size:14.5px;}
    .contact-card,.form-panel{padding:26px 22px;}
    .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
    .page-meta{gap:8px;}
    .form-foot .btn{width:100%;}
    .contact-row{flex-direction:column;gap:4px;}
    .contact-row .k{flex:none;}
  }
  @media (max-width:520px){
    .metrics{grid-template-columns:1fr;}
    .metric{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:24px;padding-bottom:24px;}
    .metric:first-child{border-top:none;padding-top:0;}
    .faq-tools{flex-direction:column;align-items:stretch;}
    .search-box{max-width:none;}
    .btn{height:46px;padding:0 20px;font-size:14px;}
    h1.page-title{font-size:clamp(1.8rem,7vw,2.4rem);}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
  }