/* roulang page: index */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --white:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-badge:999px;
  --shadow-1:0 1px 2px rgba(11,14,12,.06);
  --shadow-2:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:72px;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section--tight{padding:48px 0;}
@media (min-width:1024px){.section--tight{padding:72px 0;}}
.num{font-variant-numeric:tabular-nums;letter-spacing:.01em;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-900);color:#C9D1C7;font-size:12px;letter-spacing:.04em;}
.topbar-inner{height:30px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:10px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);flex:none;}
.topbar-domain{color:#8E988D;}
.topbar-link{color:var(--lime);font-weight:600;white-space:nowrap;}
.topbar-link:hover{color:var(--lime-600);}
@media (max-width:520px){.topbar-left span.topbar-text{display:none;}}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(11,14,12,.96);backdrop-filter:blur(10px);transition:background-color .24s var(--ease),border-color .24s var(--ease);border-bottom:1px solid transparent;}
.site-header.is-scrolled{background:rgba(11,14,12,.9);border-bottom-color:rgba(228,231,226,.14);}
.nav-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:12px;flex:none;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--lime);display:flex;align-items:center;justify-content:center;color:var(--ink-900);font-weight:800;font-size:15px;letter-spacing:-.02em;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{color:#F2F5F0;font-weight:800;font-size:16px;letter-spacing:-.01em;}
.brand-sub{color:#8E988D;font-size:11px;letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-menu a{display:inline-block;padding:9px 14px;border-radius:8px;font-size:15px;color:#C9D1C7;font-weight:500;}
.nav-menu a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-menu a.active{color:var(--lime);background:rgba(182,255,59,.1);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid rgba(228,231,226,.2);border-radius:10px;align-items:center;justify-content:center;}
.nav-toggle span{display:block;width:18px;height:2px;background:#E9EDE7;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#E9EDE7;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
@media (max-width:1023px){
  .nav-menu{position:absolute;left:0;right:0;top:70px;flex-direction:column;align-items:stretch;gap:2px;background:var(--ink-700);border-top:1px solid rgba(228,231,226,.12);padding:12px 20px 20px;display:none;}
  .nav-menu.is-open{display:flex;}
  .nav-menu a{padding:12px 14px;font-size:16px;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-primary{display:none;}
}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);}
@media (min-width:1024px){.btn{height:48px;padding:0 24px;}}
.btn .arrow{transition:transform .22s var(--ease);display:inline-block;}
.btn:hover .arrow{transform:translateX(3px);}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--lime);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);}
.btn-dark{background:var(--ink-900);color:var(--lime);}
.btn-dark:hover{background:var(--ink-700);transform:translateY(-1px);}
.btn-ghost-light{border:1px solid rgba(228,231,226,.28);color:#EDF1EA;background:transparent;}
.btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);}
.btn-ghost-dark{border:1px solid var(--line);color:var(--ink-900);background:transparent;}
.btn-ghost-dark:hover{border-color:var(--ink-900);background:rgba(11,14,12,.03);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--ink-900);color:#EDF1EA;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 1px,transparent 1px 12px);pointer-events:none;}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(182,255,59,.08),transparent 68%);pointer-events:none;}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;padding:56px 0 64px;}
@media (min-width:1024px){.hero-grid{grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:96px 0 104px;}}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--lime);border:1px solid rgba(182,255,59,.32);border-radius:var(--radius-badge);padding:6px 14px;margin-bottom:22px;}
.hero h1{font-size:clamp(34px,7.4vw,64px);line-height:1.05;letter-spacing:-.02em;font-weight:800;color:#fff;max-width:16em;}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.8;color:#B9C2B6;max-width:44em;}
@media (min-width:1024px){.hero-sub{font-size:17px;}}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-trust{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:#98A295;}
.hero-trust li{display:flex;align-items:center;gap:8px;}
.hero-trust li::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:50%;flex:none;}
.hero-visual{position:relative;border:1px solid rgba(228,231,226,.16);border-radius:var(--radius-card);overflow:hidden;background:var(--ink-700);aspect-ratio:16/10;}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual-tag{position:absolute;left:14px;bottom:14px;background:rgba(11,14,12,.78);border:1px solid rgba(182,255,59,.4);color:var(--lime);font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:var(--radius-badge);}
.hero-visual-code{position:absolute;right:14px;top:14px;background:rgba(11,14,12,.72);border:1px solid rgba(228,231,226,.2);color:#C9D1C7;font-size:11px;letter-spacing:.1em;padding:5px 10px;border-radius:6px;}

/* ---------- 标题组 ---------- */
.sec-head{margin-bottom:32px;}
@media (min-width:1024px){.sec-head{margin-bottom:40px;}}
.sec-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;}
.sec-title{margin-top:12px;font-size:26px;line-height:1.3;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
@media (min-width:1024px){.sec-title{font-size:28px;}}
.sec-desc{margin-top:14px;font-size:15px;color:var(--muted);max-width:56em;}
.sec-head--split{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;}
.on-dark .sec-title{color:#fff;}
.on-dark .sec-label{color:#8E988D;}
.on-dark .sec-desc{color:#A9B2A6;}

/* ---------- 卖点编号区 ---------- */
.points{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){.points{grid-template-columns:1.1fr .9fr;gap:28px;}}
.point-lead{border:1px solid var(--line);background:var(--white);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:18px;}
@media (min-width:1024px){.point-lead{padding:36px;}}
.point-num{font-size:64px;line-height:1;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--ink-900);letter-spacing:-.03em;}
@media (min-width:1024px){.point-num{font-size:88px;}}
.point-lead h3,.point-item h3{font-size:19px;font-weight:700;color:var(--ink-900);line-height:1.45;}
.point-lead p,.point-item p{font-size:15px;color:var(--ink-600);}
.point-side{display:flex;flex-direction:column;gap:24px;}
.point-item{border:1px solid var(--line);background:var(--white);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);display:flex;gap:20px;align-items:flex-start;transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);}
.point-item:hover{border-color:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.point-item .point-num{font-size:44px;-webkit-text-stroke:1.2px var(--ink-900);}
@media (min-width:1024px){.point-item .point-num{font-size:54px;}}
.point-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;}
.chip{display:inline-flex;align-items:center;font-size:12px;letter-spacing:.04em;color:var(--ink-600);border:1px solid var(--line);border-radius:var(--radius-badge);padding:4px 12px;background:var(--paper);}
.chip--clay{color:#B23F19;border-color:rgba(255,107,61,.4);background:rgba(255,107,61,.08);}

/* ---------- 场景演示 ---------- */
.scene{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:48px;align-items:center;}}
.scene-media{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--white);aspect-ratio:4/3;box-shadow:var(--shadow-1);}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.scene-media:hover img{transform:scale(1.03);}
.steps{display:flex;flex-direction:column;gap:0;}
.step{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);}
.step:first-child{padding-top:0;}
.step:last-child{border-bottom:0;padding-bottom:0;}
.step-no{flex:none;width:46px;height:46px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;color:var(--ink-900);background:var(--white);}
.step h3{font-size:17px;font-weight:700;color:var(--ink-900);}
.step p{font-size:14.5px;color:var(--muted);margin-top:4px;}
.scene-note{border-left:3px solid var(--lime);background:var(--white);border:1px solid var(--line);border-left-width:3px;padding:18px 20px;border-radius:0 var(--radius-card) var(--radius-card) 0;font-size:14.5px;color:var(--ink-600);}

/* ---------- 卡片 / 内容列表 ---------- */
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);}
.post-card:hover{border-color:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-badge{align-self:flex-start;font-size:12px;letter-spacing:.04em;padding:4px 12px;border-radius:var(--radius-badge);background:rgba(255,107,61,.1);color:#B23F19;border:1px solid rgba(255,107,61,.3);}
.post-title{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-title{color:var(--ink-900);}
.post-sum{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:#8A918A;border-top:1px solid var(--line);padding-top:12px;}
.post-more{color:var(--ink-900);font-weight:600;}
.post-card:hover .post-more{color:var(--ink-900);text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--lime);text-decoration-thickness:2px;}
.empty-state{border:1px dashed var(--line);background:var(--white);border-radius:var(--radius-card);padding:44px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;}
.empty-state p{color:var(--muted);font-size:15px;}

/* ---------- 社会认同 ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(228,231,226,.16);border:1px solid rgba(228,231,226,.16);border-radius:var(--radius-card);overflow:hidden;}
@media (min-width:1024px){.stats{grid-template-columns:repeat(4,1fr);}}
.stat{background:var(--ink-900);padding:26px 22px;}
.stat b{display:block;font-size:36px;line-height:1.1;font-weight:800;color:var(--lime);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
@media (min-width:1024px){.stat b{font-size:44px;}}
.stat span{display:block;margin-top:8px;font-size:13.5px;color:#A9B2A6;}
.quotes{display:grid;grid-template-columns:1fr;gap:20px;margin-top:28px;}
@media (min-width:1024px){.quotes{grid-template-columns:repeat(3,1fr);}}
.quote{border-top:2px solid var(--lime);padding-top:16px;font-size:14.5px;color:var(--ink-600);}
.quote strong{display:block;color:var(--ink-900);font-size:14px;margin-bottom:6px;}

/* ---------- 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:20px;text-align:left;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-900);}
.faq-q .faq-icon{flex:none;width:26px;height:26px;border:1px solid var(--line);border-radius:50%;position:relative;transition:transform .22s var(--ease),border-color .22s var(--ease);}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{content:"";position:absolute;background:var(--ink-900);left:50%;top:50%;}
.faq-q .faq-icon::before{width:11px;height:1.5px;transform:translate(-50%,-50%);}
.faq-q .faq-icon::after{width:1.5px;height:11px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(180deg);border-color:var(--ink-900);}
.faq-item.is-open .faq-q .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .28s var(--ease),opacity .2s var(--ease);}
.faq-item.is-open .faq-a{max-height:420px;opacity:1;padding-bottom:22px;}
.faq-a p{font-size:15px;color:var(--muted);max-width:62em;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-900);color:#EDF1EA;position:relative;overflow:hidden;}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);background-size:22px 22px;opacity:.5;pointer-events:none;}
.cta-inner{position:relative;z-index:2;padding:64px 0;text-align:left;}
@media (min-width:1024px){.cta-inner{padding:104px 0;}}
.cta-inner h2{font-size:clamp(28px,5&,52px);font-size:clamp(28px,5vw,52px);line-height:1.12;letter-spacing:-.02em;font-weight:800;color:#fff;max-width:18em;}
.cta-inner p{margin-top:18px;color:#A9B2A6;font-size:16px;max-width:44em;}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#98A295;padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}}
.footer-title{font-size:13px;letter-spacing:.1em;color:#E9EDE7;font-weight:700;margin-bottom:14px;}
.footer-list li{margin-bottom:9px;}
.footer-list a{font-size:14px;color:#98A295;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-list a:hover{color:var(--lime);transform:translateX(2px);}
.footer-brand p{font-size:14px;color:#8E988D;margin-top:14px;max-width:34em;}
.footer-contact{font-size:14px;line-height:2;color:#98A295;}
.footer-contact b{color:#E9EDE7;font-weight:600;}
.footer-bottom{margin-top:44px;border-top:1px solid rgba(228,231,226,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#6F786E;letter-spacing:.02em;}

/* ---------- 移动端底部转化条 ---------- */
.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:80;background:rgba(11,14,12,.97);border-top:1px solid rgba(228,231,226,.16);padding:10px 16px;display:flex;gap:10px;align-items:center;}
.mobile-bar .btn{flex:1;justify-content:center;height:44px;}
@media (min-width:1024px){.mobile-bar{display:none;} body{padding-bottom:0;}}

/* ---------- 动效与可访问性 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .post-card:hover,.point-item:hover,.btn:hover{transform:none;}
}

/* roulang page: article */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --white:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --clay-ink:#C8441D;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(11,14,12,.06);
  --shadow-md:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:70px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink-600);background:var(--paper);
  padding-bottom:78px;
}
@media(min-width:1024px){body{padding-bottom:0}}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1280px){.container{padding:0 32px}}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid transparent;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.99)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:var(--nav-h);position:relative}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  display:grid;place-items:center;width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--ink-900);color:var(--lime);font-weight:800;font-size:13px;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.18;min-width:0}
.brand-main{font-size:15px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav-menu{display:none}
.nav-menu a{
  position:relative;font-size:14px;font-weight:600;color:var(--ink-600);padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink-900);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:var(--ink-900)}
.nav-menu a:hover::after,.nav-menu a.active::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--ink-900)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);
  border-radius:10px;background:#fff;transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink-900)}
.nav-toggle span{position:relative;display:block;width:16px;height:2px;background:var(--ink-900);transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink-900);
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle span::before{top:-5px}
.nav-toggle span::after{top:5px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
@media(min-width:1024px){
  .nav-menu{display:flex;align-items:center;gap:30px}
  .nav-toggle{display:none}
}
@media(max-width:1023px){
  .nav-menu.is-open{
    display:flex;flex-direction:column;gap:14px;position:absolute;top:var(--nav-h);left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);padding:18px 20px 24px;box-shadow:var(--shadow-md);
  }
  .nav-menu.is-open a{font-size:16px}
  .nav-actions .btn-sm{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}
.btn:active{transform:translateY(1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--ink-900);color:var(--lime)}
.btn-primary:hover{background:var(--ink-700);transform:translateY(-1px)}
.btn-lime{background:var(--lime);color:var(--ink-900)}
.btn-lime:hover{background:var(--lime-600);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--lime-600);color:var(--ink-900);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost-light:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px)}
.btn-block{width:100%}
@media(max-width:520px){.btn{height:44px;padding:0 18px;font-size:14px}}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;background:var(--ink-900);color:#fff;padding:34px 0 64px;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.article-hero>.container{position:relative;z-index:2}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.58);
  letter-spacing:.02em;margin-bottom:30px;
}
.breadcrumb a{color:rgba(255,255,255,.78);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{color:rgba(255,255,255,.32)}
.breadcrumb .current{color:rgba(255,255,255,.55);max-width:min(560px,60vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:860px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(182,255,59,.14);color:var(--lime);
  border:1px solid rgba(182,255,59,.32);
}
.badge-clay{background:rgba(255,107,61,.14);color:#FFA382;border-color:rgba(255,107,61,.3)}
.article-title{
  margin:18px 0 0;font-size:clamp(28px,4.4vw,42px);line-height:1.18;font-weight:800;
  letter-spacing:-.015em;color:#fff;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;
  font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em;
}
.article-meta b{color:rgba(255,255,255,.86);font-weight:600}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.28)}

/* ---------- reading area ---------- */
.article-main{padding:56px 0 8px}
@media(min-width:1024px){.article-main{padding:76px 0 12px}}
.article-wrap{max-width:760px;margin:0 auto}
.article-content{font-size:17px;line-height:1.85;color:var(--ink-600);word-wrap:break-word}
.article-content p{margin:0 0 1.25em}
.article-content > p:first-child{font-size:17.5px;color:#2C312D}
.article-content h2{
  margin:2.1em 0 .62em;font-size:26px;line-height:1.32;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;
}
.article-content h3{margin:1.75em 0 .5em;font-size:19px;line-height:1.45;font-weight:600;color:var(--ink-900)}
.article-content h4{margin:1.5em 0 .4em;font-size:17px;font-weight:600;color:var(--ink-900)}
.article-content ul,.article-content ol{margin:0 0 1.25em;padding-left:1.35em}
.article-content li{margin:0 0 .55em}
.article-content li::marker{color:var(--lime-600)}
.article-content blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--lime-600);
  background:#fff;border-radius:0 12px 12px 0;color:var(--ink-600);font-size:16px;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content a{
  color:var(--ink-900);font-weight:600;border-bottom:1px solid var(--lime-600);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.article-content a:hover{background:rgba(182,255,59,.28);border-color:var(--ink-900)}
.article-content img{border-radius:12px;margin:1.6em 0;width:100%;height:auto}
.article-content figure{margin:1.6em 0}
.article-content figcaption{margin-top:10px;font-size:13px;color:var(--muted);text-align:center;letter-spacing:.02em}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.article-content table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.6em 0;font-size:15px;
}
.article-content th,.article-content td{
  padding:11px 14px;border:1px solid var(--line);text-align:left;white-space:nowrap;
}
.article-content th{background:#fff;color:var(--ink-900);font-weight:600}
.article-content tr:nth-child(even) td{background:rgba(255,255,255,.7)}
.article-content .tip{
  margin:1.6em 0;padding:14px 18px;border-radius:12px;border:1px solid var(--line);
  background:#fff;font-size:15.5px;color:var(--ink-600);
}
.article-content .tip-warn{border-color:rgba(255,107,61,.4);background:rgba(255,107,61,.06);color:#8E3413}

/* ---------- article footer bits ---------- */
.article-end{margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:22px}
.tag-row .label{font-size:13px;color:var(--muted);letter-spacing:.04em;margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--ink-600);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--lime-600);color:var(--ink-900)}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--line);padding-bottom:4px;transition:border-color .2s var(--ease);
}
.back-link:hover{border-color:var(--lime-600)}
.empty-box{
  max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 28px;text-align:center;
}
.empty-box h2{margin:0 0 10px;font-size:22px;font-weight:700;color:var(--ink-900)}
.empty-box p{margin:0 0 22px;color:var(--muted);font-size:15px}

/* ---------- related ---------- */
.related{padding:56px 0 0}
@media(min-width:1024px){.related{padding:80px 0 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{margin:0;font-size:clamp(22px,2.6vw,28px);font-weight:700;color:var(--ink-900);letter-spacing:-.01em;line-height:1.3}
.section-head p{margin:8px 0 0;font-size:14px;color:var(--muted)}
.link-more{
  font-size:14px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line);
  padding-bottom:3px;white-space:nowrap;transition:border-color .2s var(--ease),color .2s var(--ease);
}
.link-more:hover{border-color:var(--lime-600)}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--lime-600);box-shadow:var(--shadow-md)}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:#EDEFEA}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-badge{
  align-self:flex-start;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.03em;background:rgba(255,107,61,.12);color:var(--clay-ink);
}
.post-title{margin:0;font-size:18px;line-height:1.45;font-weight:700;color:var(--ink-900)}
.post-desc{
  margin:0;font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);
  display:flex;align-items:center;gap:10px;letter-spacing:.02em;
}

/* ---------- cta ---------- */
.cta-band{background:var(--ink-900);color:#fff;margin-top:72px;padding:72px 0}
@media(min-width:1024px){.cta-band{margin-top:104px;padding:104px 0}}
.cta-band h2{
  margin:0;font-size:clamp(28px,5vw,60px);line-height:1.06;font-weight:800;letter-spacing:-.02em;color:#fff;
  max-width:820px;
}
.cta-band p{margin:20px 0 34px;font-size:16px;color:rgba(255,255,255,.62);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:38px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}}
.footer-brand .brand-main{color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.footer-brand .brand-mark{background:var(--lime);color:var(--ink-900)}
.footer-brand p{margin:18px 0 0;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px}
.footer-title{
  margin:0 0 16px;font-size:13px;font-weight:700;letter-spacing:.1em;color:#fff;text-transform:uppercase;
}
.footer-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}
.footer-list a,.footer-list li{color:rgba(255,255,255,.64);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-list a{display:inline-block}
.footer-list a:hover{color:var(--lime);transform:translateX(2px)}
.footer-contact{line-height:2;color:rgba(255,255,255,.64)}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:.02em;
}

/* ---------- mobile bar ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;align-items:center;gap:10px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,14,12,.97);border-top:1px solid rgba(255,255,255,.1);
}
.mobile-bar .btn{flex:1}
.mobile-bar .btn-ghost-light{flex:0 0 auto;padding:0 16px}
@media(min-width:1024px){.mobile-bar{display:none}}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}
.reveal{opacity:0;transform:translateY(14px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .45s var(--ease),transform .45s var(--ease)}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* roulang page: category1 */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --card:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,14,12,.06);
  --shadow-2:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-900);color:#9BA39C;font-size:12px;letter-spacing:.04em;border-bottom:1px solid rgba(255,255,255,.06);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:30px;padding:4px 0;flex-wrap:wrap;}
.topbar-left{display:flex;align-items:center;gap:10px;}
.topbar-dot{width:5px;height:5px;border-radius:999px;background:var(--lime);display:inline-block;}
.topbar-right a{color:#D8DED6;border-bottom:1px solid rgba(182,255,59,.5);padding-bottom:1px;transition:color .2s var(--ease),border-color .2s var(--ease);}
.topbar-right a:hover{color:var(--lime);border-color:var(--lime);}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,14,12,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:rgba(255,255,255,.12);background:rgba(11,14,12,.97);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--lime);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:#8E968F;letter-spacing:.06em;}
.nav-menu{display:none;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;font-size:14px;color:#C6CDC5;padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--lime);
  transition:right .24s var(--ease);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{right:0;}
.nav-menu a.active{color:var(--lime);}
.nav-menu a.active::after{right:0;}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:#E6EBE4;border-radius:2px;position:relative;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}
.btn-sm{height:40px;padding:0 16px;font-size:13px;}
.btn-primary{background:var(--lime);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);}
.btn-dark{background:var(--ink-900);color:var(--lime);}
.btn-dark:hover{background:var(--ink-700);transform:translateY(-1px);}
.btn-ghost{border:1px solid rgba(255,255,255,.26);color:#F0F3EE;background:transparent;}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px);}
.btn-outline{border:1px solid var(--line);color:var(--ink-900);background:#fff;}
.btn-outline:hover{border-color:var(--lime);color:var(--ink-900);transform:translateY(-1px);}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:#8A928B;display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:#B9C1B8;transition:color .2s var(--ease);}
.crumb a:hover{color:var(--lime);}
.crumb span.sep{color:#4B524C;}
.crumb .current{color:#7C847D;}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--ink-900);color:#fff;overflow:hidden;
  padding:56px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 12px);
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(182,255,59,.10),transparent 62%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid rgba(182,255,59,.4);color:var(--lime);
  font-size:12px;letter-spacing:.08em;padding:6px 12px;border-radius:999px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(34px,6vw,62px);line-height:1.05;letter-spacing:-.02em;font-weight:800;color:#fff;
}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.85;color:#AEB6AE;max-width:620px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:13px;color:#9AA29A;letter-spacing:.02em;}
.trust-row li::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--lime);flex:0 0 6px;}
.hero-figure{position:relative;}
.hero-frame{
  position:relative;border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);overflow:hidden;
  aspect-ratio:16/10;background:var(--ink-700);
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-tag{
  position:absolute;left:14px;bottom:14px;z-index:2;
  background:rgba(11,14,12,.82);border:1px solid rgba(182,255,59,.45);color:var(--lime);
  font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:999px;
}
.hero-meta{display:flex;gap:18px;flex-wrap:wrap;margin-top:16px;font-size:12px;color:#7E867F;letter-spacing:.04em;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section-head{max-width:720px;margin-bottom:32px;}
.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:12px;}
.section-head h2{font-size:clamp(24px,3.4vw,32px);line-height:1.3;font-weight:700;color:var(--ink-900);}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);}

/* ---------- 步骤区 ---------- */
.steps-layout{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:1024px){.steps-layout{grid-template-columns:246px 1fr;gap:56px;}}
.toc{display:none;}
@media (min-width:1024px){
  .toc{display:block;position:sticky;top:106px;align-self:start;}
}
.toc-title{font-size:12px;letter-spacing:.14em;color:var(--muted);margin-bottom:16px;}
.toc-list{border-left:1px solid var(--line);}
.toc-list a{
  display:block;position:relative;padding:9px 0 9px 18px;font-size:14px;color:#6F776F;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.toc-list a::before{
  content:"";position:absolute;left:-1px;top:12px;bottom:12px;width:2px;background:transparent;
  transition:background-color .2s var(--ease);
}
.toc-list a:hover{color:var(--ink-900);padding-left:22px;}
.toc-list a.is-active{color:var(--ink-900);font-weight:600;}
.toc-list a.is-active::before{background:var(--lime);}
.toc-hint{
  margin-top:24px;border:1px solid var(--line);border-left:3px solid var(--lime);
  background:#fff;border-radius:12px;padding:16px 16px;font-size:13px;color:var(--muted);line-height:1.75;
}
.step-list{display:flex;flex-direction:column;}
.step-item{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:26px 0;border-top:1px solid var(--line);
}
.step-item:last-child{border-bottom:1px solid var(--line);}
@media (min-width:768px){.step-item{grid-template-columns:104px 1fr;gap:28px;padding:34px 0;}}
.step-num{
  font-size:52px;line-height:1;font-weight:800;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.5px rgba(11,14,12,.28);
  font-variant-numeric:tabular-nums;
}
@media (min-width:768px){.step-num{font-size:74px;}}
.step-body h3{font-size:19px;font-weight:600;color:var(--ink-900);line-height:1.45;}
.step-body p{margin-top:12px;font-size:16px;line-height:1.85;color:var(--ink-600);}
.step-points{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.step-points li{position:relative;padding-left:18px;font-size:14px;color:var(--muted);line-height:1.7;}
.step-points li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:999px;
  background:var(--ink-900);
}

/* ---------- 排查区块 ---------- */
.trouble{background:var(--paper);}
.trouble-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center;}
@media (min-width:1024px){.trouble-grid{grid-template-columns:1fr 1.05fr;gap:64px;}}
.trouble-figure{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#fff;
  aspect-ratio:4/3;box-shadow:var(--shadow-1);
}
.trouble-figure img{width:100%;height:100%;object-fit:cover;}
.trouble-list{display:flex;flex-direction:column;}
.trouble-row{display:grid;grid-template-columns:26px 1fr;gap:16px;padding:20px 0;border-top:1px solid var(--line);}
.trouble-row:last-child{border-bottom:1px solid var(--line);}
.trouble-row .idx{font-size:13px;font-weight:700;color:var(--ink-900);letter-spacing:.04em;padding-top:3px;font-variant-numeric:tabular-nums;}
.trouble-row h3{font-size:17px;font-weight:600;color:var(--ink-900);}
.trouble-row p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 深色提醒条 ---------- */
.alert-band{background:var(--ink-900);color:#fff;padding:56px 0;}
@media (min-width:1024px){.alert-band{padding:80px 0;}}
.alert-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:900px){.alert-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px;}}
.alert-card{
  border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);padding:26px 24px;
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.alert-card:hover{border-color:rgba(182,255,59,.55);transform:translateY(-2px);}
.alert-card h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:10px;}
.alert-card p{font-size:14px;color:#9AA29A;line-height:1.8;}
.alert-card .k{display:block;font-size:12px;letter-spacing:.14em;color:var(--lime);margin-bottom:12px;}
.alert-card.wide{background:linear-gradient(0deg,rgba(182,255,59,.06),rgba(182,255,59,.06));}

/* ---------- 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:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink-700);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink-900);border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .2s var(--ease);}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);}
.faq-q[aria-expanded="true"] .faq-icon::after{opacity:0;}
.faq-a{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:860px;animation:fadeUp .28s var(--ease);}
.faq-a[hidden]{display:none;}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}

/* ---------- CTA ---------- */
.cta-dark{background:var(--ink-900);color:#fff;padding:72px 0;}
@media (min-width:1024px){.cta-dark{padding:120px 0;}}
.cta-dark h2{font-size:clamp(30px,5vw,54px);line-height:1.1;font-weight:800;letter-spacing:-.02em;max-width:820px;}
.cta-dark p{margin-top:20px;font-size:16px;color:#A2AAA2;max-width:640px;}
.cta-dark .hero-cta{margin-top:36px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#98A099;padding:56px 0 28px;border-top:1px solid rgba(255,255,255,.08);}
@media (min-width:1024px){.site-footer{padding:72px 0 28px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1.1fr 1fr;gap:40px;}}
.footer-brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start;}
.footer-brand p{font-size:14px;line-height:1.85;color:#8D958E;max-width:340px;}
.footer-title{font-size:13px;letter-spacing:.12em;color:#E7ECE6;font-weight:600;margin-bottom:16px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list li,.footer-contact{font-size:14px;line-height:1.9;color:#8D958E;}
.footer-list a{display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-list a:hover{color:var(--lime);transform:translateX(2px);}
.footer-contact b{color:#D5DBD4;font-weight:600;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  font-size:12.5px;letter-spacing:.02em;color:#7B837C;
}

/* ---------- 移动端底部转化条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(11,14,12,.96);border-top:1px solid rgba(255,255,255,.12);
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  display:flex;align-items:center;gap:12px;
}
.mobile-bar .btn{flex:1;height:44px;font-size:14px;padding:0 14px;}
.mobile-bar .link{
  flex:0 0 auto;font-size:13px;color:#C6CDC5;border-bottom:1px solid rgba(182,255,59,.5);padding-bottom:2px;
  transition:color .2s var(--ease);
}
.mobile-bar .link:hover{color:var(--lime);}
body{padding-bottom:72px;}
@media (min-width:1024px){
  .mobile-bar{display:none;}
  body{padding-bottom:0;}
  .nav-menu{display:flex;}
  .nav-toggle{display:none;}
}
@media (max-width:1023px){
  .nav-menu{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(11,14,12,.98);border-top:1px solid rgba(255,255,255,.1);
    padding:8px 20px 18px;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.07);font-size:15px;}
  .nav-menu a::after{display:none;}
  .site-header .nav-inner{position:relative;}
  .hero{padding:40px 0 52px;}
}
@media (max-width:640px){
  .step-item{gap:14px;}
  .step-num{font-size:44px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --card:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --clay-ink:#B8401A;
  --r-card:16px;
  --r-btn:10px;
  --r-badge:999px;
  --sh-1:0 1px 2px rgba(11,14,12,.06);
  --sh-2:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --nav-h:70px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--paper);
  padding-bottom:78px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink-900);color:rgba(255,255,255,.72)}
.topbar-inner{min-height:32px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:5px;padding-bottom:5px}
.topbar-note{margin:0;font-size:12px;letter-spacing:.04em;line-height:1.5}
.topbar-note b{color:rgba(255,255,255,.92);font-weight:600}
.topbar-link{font-size:12px;letter-spacing:.04em;color:var(--lime);border-bottom:1px solid rgba(182,255,59,.35);padding-bottom:1px;transition:color .2s var(--ease),border-color .2s var(--ease)}
.topbar-link:hover{color:#fff;border-color:#fff}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:70;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);transition:box-shadow .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);border-bottom:1px solid transparent}
.site-header.is-scrolled{border-bottom:1px solid var(--line);box-shadow:var(--sh-1);background:rgba(255,255,255,.97)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--nav-h);position:relative}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center;border-radius:10px;background:var(--ink-900);color:var(--lime);font-weight:800;font-size:14px;letter-spacing:.02em}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand-main{font-size:15px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.04em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu a{font-size:14.5px;font-weight:500;color:var(--ink-600);padding:6px 0;position:relative;transition:color .2s var(--ease)}
.nav-menu a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime-600);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.nav-menu a:hover{color:var(--ink-900)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--ink-900);font-weight:700}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{content:"";display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle span::before{transform:translateY(-6px)}
.nav-toggle span::after{transform:translateY(4px)}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg) translateY(-1px)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.btn .arrow{display:inline-block;transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink-900);color:var(--lime)}
.btn-primary:hover{background:var(--ink-700);transform:translateY(-1px)}
.btn-lime{background:var(--lime);color:var(--ink-900)}
.btn-lime:hover{background:var(--lime-600);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink-900);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--lime-600);color:var(--ink-900);transform:translateY(-1px)}
.btn-outline-dark{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28)}
.btn-outline-dark:hover{border-color:var(--lime);color:var(--lime);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:13.5px}
@media(max-width:767px){.btn{height:44px;padding:0 18px;font-size:14.5px}}

/* ============ 页面头部（深色） ============ */
.page-hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden}
.page-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.20}
.page-hero::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 12px);opacity:.6;pointer-events:none}
.page-hero-inner{position:relative;z-index:2;padding-top:48px;padding-bottom:56px}
@media(min-width:1024px){.page-hero-inner{padding-top:64px;padding-bottom:88px}}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.8);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs a:hover{color:var(--lime);border-color:var(--lime)}
.crumbs .sep{opacity:.45}
.crumbs .now{color:rgba(255,255,255,.55)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--lime);font-weight:600;margin-bottom:18px}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--lime);display:block}
.page-hero h1{font-size:clamp(30px,5vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.01em;color:#fff;max-width:20em}
.page-hero h1 em{font-style:normal;color:var(--lime)}
.hero-sub{margin-top:20px;font-size:16.5px;line-height:1.8;color:rgba(255,255,255,.72);max-width:62ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-marks{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12)}
.hero-marks li{font-size:13px;color:rgba(255,255,255,.66);display:flex;align-items:center;gap:8px}
.hero-marks li::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:2px;flex:0 0 6px}

/* ============ 通用板块 ============ */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-paper{background:var(--paper)}
.section-white{background:#fff}
.section-dark{background:var(--ink-900);color:#fff}
.sec-head{max-width:720px;margin-bottom:32px}
@media(min-width:1024px){.sec-head{margin-bottom:40px}}
.sec-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:600;display:block;margin-bottom:12px}
.section-dark .sec-label{color:rgba(255,255,255,.5)}
.sec-head h2{font-size:26px;line-height:1.35;font-weight:700;color:var(--ink-900)}
@media(min-width:1024px){.sec-head h2{font-size:28px}}
.section-dark .sec-head h2{color:#fff}
.sec-head p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.8}
.section-dark .sec-head p{color:rgba(255,255,255,.66)}

/* ============ 对照区（核心版式） ============ */
.sec-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.sec-layout{grid-template-columns:minmax(0,1fr) 336px;gap:40px;align-items:start}}
.pair-list{border-top:1px solid var(--line);background:#fff;border-radius:var(--r-card);border:1px solid var(--line);overflow:hidden;box-shadow:var(--sh-1)}
.pair-row{display:grid;grid-template-columns:1fr;border-bottom:1px solid var(--line)}
.pair-row:last-child{border-bottom:0}
@media(min-width:768px){.pair-row{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
.pair-q{padding:22px 20px 18px;background:#fff}
.pair-a{padding:18px 20px 22px;background:#FBFCFA}
@media(min-width:768px){
  .pair-q{padding:26px 24px;border-right:1px solid var(--line)}
  .pair-a{padding:26px 24px;position:relative}
  .pair-a::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--lime)}
}
.pair-idx{display:block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--muted);margin-bottom:10px}
.pair-q h3{font-size:17.5px;line-height:1.5;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.pair-q p{font-size:14.5px;line-height:1.75;color:var(--muted)}
.pair-tag{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;letter-spacing:.08em;color:var(--clay-ink);background:rgba(255,107,61,.1);border-radius:var(--r-badge);padding:4px 10px;margin-bottom:12px}
.pair-a ul{display:flex;flex-direction:column;gap:8px}
.pair-a li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.7;color:var(--ink-600)}
.pair-a li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--ink-900)}
.pair-a li b{color:var(--ink-900);font-weight:600}

/* 侧栏 */
.side-col{display:flex;flex-direction:column;gap:20px}
@media(min-width:1024px){.side-col{position:sticky;top:calc(var(--nav-h) + 24px)}}
.tip-card{background:#fff;border:1px solid var(--line);border-left:3px solid var(--lime);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-1)}
.tip-card h3{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.tip-card ol{display:flex;flex-direction:column;gap:12px;counter-reset:tip}
.tip-card li{font-size:14px;line-height:1.7;color:var(--ink-600);padding-left:26px;position:relative}
.tip-card li::before{counter-increment:tip;content:counter(tip,decimal-leading-zero);position:absolute;left:0;top:0;font-size:12px;font-weight:700;color:var(--muted)}
.side-note{background:var(--ink-900);border-radius:var(--r-card);padding:24px 22px;color:#fff}
.side-note h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:12px}
.side-note p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.7)}
.side-note .side-line{height:1px;background:rgba(255,255,255,.14);margin:16px 0}
.side-note b{color:var(--lime);font-weight:600}
.side-note .btn{margin-top:18px;width:100%}

/* ============ 编号清单 ============ */
.num-rows{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.num-row{display:grid;grid-template-columns:1fr;gap:12px;padding:28px 0;border-bottom:1px solid var(--line)}
@media(min-width:768px){.num-row{grid-template-columns:132px minmax(0,1fr);gap:28px;align-items:start;padding:34px 0}}
.num-big{font-size:64px;line-height:1;font-weight:800;letter-spacing:-.02em;color:transparent;-webkit-text-stroke:2px var(--ink-900);font-variant-numeric:tabular-nums}
@media(min-width:768px){.num-big{font-size:82px}}
.num-body h3{font-size:19px;font-weight:600;color:var(--ink-900);margin-bottom:10px}
.num-body p{font-size:15.5px;line-height:1.8;color:var(--ink-600);max-width:68ch}
.num-body .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{font-size:12.5px;color:var(--ink-600);background:#fff;border:1px solid var(--line);border-radius:var(--r-badge);padding:5px 12px}

/* ============ 深色自查区 ============ */
.check-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.check-grid{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:52px;align-items:center}}
.check-figure{position:relative;border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;background:var(--ink-700)}
.check-figure img{width:100%;height:100%;object-fit:cover}
.check-figure .fig-tag{position:absolute;left:14px;bottom:14px;background:var(--ink-900);color:var(--lime);font-size:12px;font-weight:600;letter-spacing:.06em;padding:6px 12px;border-radius:var(--r-badge);border:1px solid rgba(182,255,59,.35)}
.steps{display:flex;flex-direction:column}
.step{display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;padding:22px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.step:last-child{border-bottom:0}
.step-num{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid rgba(182,255,59,.4);color:var(--lime);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums}
.step h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:8px}
.step p{font-size:14.8px;line-height:1.78;color:rgba(255,255,255,.68)}

/* ============ 数据带 ============ */
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
@media(min-width:768px){.stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{background:#fff;padding:26px 22px}
.stat .val{font-size:32px;line-height:1.1;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat .val small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px}
.stat .lbl{margin-top:8px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.quote-row{display:grid;grid-template-columns:1fr;gap:16px;margin-top:24px}
@media(min-width:768px){.quote-row{grid-template-columns:repeat(3,minmax(0,1fr))}}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.quote p{font-size:14.5px;line-height:1.78;color:var(--ink-600)}
.quote .who{margin-top:14px;font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;text-align:left;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink-900);transition:color .2s var(--ease)}
.faq-q:hover{color:var(--ink-700)}
.faq-q .ico{flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;transition:transform .22s var(--ease),border-color .22s var(--ease);margin-top:2px}
.faq-q .ico::before{content:"";width:9px;height:9px;border-right:2px solid var(--ink-900);border-bottom:2px solid var(--ink-900);transform:rotate(45deg) translate(-2px,-2px);transition:border-color .2s var(--ease)}
.faq-item.open .faq-q .ico{transform:rotate(180deg);border-color:var(--lime-600)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{padding:0 46px 24px 0;font-size:15.5px;line-height:1.85;color:var(--ink-600)}
.faq-a-inner b{color:var(--ink-900);font-weight:600}

/* ============ 深色 CTA ============ */
.cta-dark{background:var(--ink-900);color:#fff;text-align:center;padding:72px 0}
@media(min-width:1024px){.cta-dark{padding:112px 0}}
.cta-dark h2{font-size:clamp(28px,4.4vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.01em;color:#fff;max-width:22em;margin:0 auto}
.cta-dark p{margin:20px auto 0;font-size:16px;line-height:1.8;color:rgba(255,255,255,.68);max-width:56ch}
.cta-dark .cta-actions{margin-top:34px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding:56px 0 28px}
@media(min-width:1024px){.site-footer{padding:72px 0 32px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:42ch}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}
.footer-title{font-size:13px;letter-spacing:.1em;font-weight:600;color:#fff;margin-bottom:16px}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list li{font-size:14px;color:rgba(255,255,255,.6)}
.footer-list a{display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-list a:hover{color:var(--lime);transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.6)}
.footer-contact b{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:rgba(255,255,255,.48);letter-spacing:.02em}
@media(min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;align-items:center;gap:24px}}

/* ============ 移动端固定转化条 ============ */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:80;display:flex;gap:10px;padding:10px 16px;background:rgba(11,14,12,.97);border-top:1px solid rgba(255,255,255,.1);box-shadow:0 -6px 24px rgba(11,14,12,.25)}
.mobile-cta .btn{flex:1;height:46px;font-size:14.5px;padding:0 12px}
@media(min-width:1024px){.mobile-cta{display:none}body{padding-bottom:0}}

/* ============ 响应式导航 ============ */
@media(max-width:1023px){
  .nav-menu{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:6px 20px 14px;box-shadow:var(--sh-2);max-height:calc(100vh - 100px);overflow:auto}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:14px 0;font-size:15px;border-bottom:1px solid var(--line)}
  .nav-menu a::after{display:none}
  .nav-menu a:last-child{border-bottom:0}
  .nav-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
  .brand-sub{display:none}
}
@media(max-width:520px){
  .brand-main{font-size:14px}
  .page-hero-inner{padding-top:36px;padding-bottom:44px}
  .hero-sub{font-size:15.5px}
  .pair-q,.pair-a{padding:20px 18px}
  .faq-a-inner{padding-right:8px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --white:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(11,14,12,.06);
  --shadow-2:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --sec-pad:100px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:var(--lime);color:var(--ink-900);}

a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:2px;
  border-radius:6px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sec-pad) 0;}
.section-tight{padding:64px 0;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  font-weight:600;
  color:var(--muted);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--lime-600);
  display:inline-block;
}
.section-title{
  font-size:28px;
  line-height:1.3;
  font-weight:700;
  color:var(--ink-900);
  letter-spacing:-.01em;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head p{
  margin-top:10px;
  color:var(--muted);
  font-size:15px;
  max-width:640px;
}
.text-link{
  color:var(--ink-900);
  font-weight:600;
  font-size:14px;
  border-bottom:1px solid var(--line);
  padding-bottom:3px;
  transition:border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.text-link:hover{border-color:var(--lime-600);color:var(--ink-700);}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(11,14,12,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:rgba(255,255,255,.13);
  background:rgba(11,14,12,.97);
}
.nav-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--lime);
  color:var(--ink-900);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:15px;
  letter-spacing:-.02em;
  font-family:'Space Grotesk',system-ui,sans-serif;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{
  color:#fff;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
}
.brand-sub{
  color:rgba(255,255,255,.55);
  font-size:11px;
  letter-spacing:.08em;
  margin-top:2px;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:28px;
}
.nav-menu a{
  position:relative;
  font-size:15px;
  color:rgba(255,255,255,.72);
  padding:6px 0;
  transition:color .22s var(--ease);
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:#fff;}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid rgba(255,255,255,.22);
  border-radius:10px;
  background:transparent;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  position:relative;
  width:16px;
  height:2px;
  background:#fff;
  display:block;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:#fff;
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  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:active{transform:translateY(1px);}
.btn-primary{background:var(--lime);color:var(--ink-900);}
.btn-primary:hover{background:var(--lime-600);transform:translateY(-1px);}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.3);
  color:#fff;
}
.btn-outline:hover{border-color:var(--lime);color:var(--lime);}
.btn-dark{background:var(--ink-900);color:var(--lime);}
.btn-dark:hover{background:var(--ink-700);transform:translateY(-1px);}
.btn-plain{
  background:transparent;
  border-color:var(--line);
  color:var(--ink-900);
}
.btn-plain:hover{border-color:var(--ink-900);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn .arrow{transition:transform .22s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:var(--ink-900);
  color:#fff;
  overflow:hidden;
  padding:88px 0 92px;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 1px,transparent 1px 11px);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-120px;
  width:420px;
  height:420px;
  background-image:radial-gradient(rgba(182,255,59,.16) 1px,transparent 1px);
  background-size:16px 16px;
  pointer-events:none;
  opacity:.5;
}
.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
}
.crumbs{
  font-size:13px;
  color:rgba(255,255,255,.5);
  margin-bottom:20px;
}
.crumbs a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--lime);}
.crumbs span.sep{margin:0 8px;color:rgba(255,255,255,.3);}
.hero h1{
  font-size:clamp(34px,5vw,58px);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:800;
  color:#fff;
}
.hero .lead{
  margin-top:22px;
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.72);
  max-width:600px;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-marks{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:34px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.hero-marks li{
  font-size:13px;
  color:rgba(255,255,255,.62);
  display:flex;
  align-items:center;
  gap:8px;
}
.hero-marks li::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--lime);
  display:inline-block;
}
.hero-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  aspect-ratio:16/10;
  background:var(--ink-700);
}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.92;
}
.hero-tag{
  position:absolute;
  left:14px;
  bottom:14px;
  background:rgba(11,14,12,.82);
  border:1px solid rgba(255,255,255,.2);
  color:#fff;
  font-size:12px;
  letter-spacing:.06em;
  padding:7px 14px;
  border-radius:var(--radius-pill);
}

/* ---------- filter bar ---------- */
.filter-bar{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding-bottom:8px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.filter-bar::-webkit-scrollbar{height:4px;}
.filter-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
.chip{
  flex:0 0 auto;
  height:38px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-600);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{border-color:var(--ink-600);}
.chip.is-active{
  background:var(--ink-900);
  border-color:var(--ink-900);
  color:var(--lime);
  font-weight:600;
}

/* ---------- flow wall ---------- */
.flow-wall{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:start;
  margin-top:36px;
}
.flow-col{
  display:flex;
  flex-direction:column;
  gap:24px;
}
.flow-col.offset{padding-top:52px;}
.flow-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.flow-card:hover{
  transform:translateY(-2px);
  border-color:var(--lime-600);
  box-shadow:var(--shadow-2);
}
.flow-media{
  position:relative;
  overflow:hidden;
  background:var(--ink-700);
}
.ratio-43{aspect-ratio:4/3;}
.ratio-1610{aspect-ratio:16/10;}
.ratio-32{aspect-ratio:3/2;}
.flow-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .46s var(--ease);
}
.flow-card:hover .flow-media img{transform:scale(1.03);}
.flow-body{padding:22px 24px 20px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 11px;
  border-radius:var(--radius-pill);
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
  background:rgba(255,107,61,.12);
  color:#C24418;
}
.badge-lime{background:rgba(154,230,25,.2);color:#3D5C00;}
.flow-body h3{
  font-size:19px;
  line-height:1.45;
  font-weight:600;
  color:var(--ink-900);
  margin:14px 0 10px;
}
.flow-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.flow-meta{
  margin-top:18px;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  letter-spacing:.03em;
  color:var(--muted);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-variant-numeric:tabular-nums;
}

/* ---------- timeline ---------- */
.timeline{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid var(--line);
  margin-top:8px;
}
.tl-item{
  padding:32px 26px 8px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.tl-item:last-child{border-right:0;}
.tl-item::before{
  content:"";
  position:absolute;
  top:-5px;
  left:0;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--lime);
  border:2px solid var(--ink-900);
  box-sizing:content-box;
}
.tl-step{
  font-family:'Space Grotesk',system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:13px;
  font-weight:700;
  color:var(--muted);
  letter-spacing:.1em;
}
.tl-item h3{
  font-size:18px;
  font-weight:600;
  color:var(--ink-900);
  margin:12px 0 10px;
  line-height:1.45;
}
.tl-item p{
  font-size:14.5px;
  color:var(--muted);
  line-height:1.75;
  padding-right:14px;
}

/* ---------- stats ---------- */
.stats-band{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-top:1px solid rgba(255,255,255,.14);
  border-bottom:1px solid rgba(255,255,255,.14);
}
.stat-item{
  padding:34px 26px;
  border-right:1px solid rgba(255,255,255,.14);
}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:'Space Grotesk',system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:44px;
  line-height:1;
  font-weight:700;
  color:var(--lime);
  letter-spacing:-.02em;
}
.stat-label{
  margin-top:12px;
  font-size:13.5px;
  color:rgba(255,255,255,.62);
  letter-spacing:.03em;
}
.quote-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  margin-top:40px;
}
.quote{
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);
  padding:24px 26px;
}
.quote p{color:rgba(255,255,255,.78);font-size:15px;line-height:1.8;}
.quote span{display:block;margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:.06em;}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  background:transparent;
  border:0;
  padding:26px 44px 26px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  cursor:pointer;
  position:relative;
  line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink-700);}
.faq-icon{
  position:absolute;
  right:6px;
  top:32px;
  width:14px;
  height:14px;
  transition:transform .25s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-600);
}
.faq-icon::before{left:0;top:6px;width:14px;height:2px;}
.faq-icon::after{left:6px;top:0;width:2px;height:14px;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 60px 28px 0;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
}
.faq-a-inner p+p{margin-top:12px;}

/* ---------- cta ---------- */
.cta-dark{
  background:var(--ink-900);
  color:#fff;
  position:relative;
  overflow:hidden;
  padding:104px 0;
}
.cta-dark::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(-45deg,rgba(255,255,255,.045) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  max-width:780px;
}
.cta-inner h2{
  font-size:clamp(30px,4vw,46px);
  line-height:1.12;
  letter-spacing:-.02em;
  font-weight:800;
}
.cta-inner p{
  margin-top:20px;
  font-size:16.5px;
  color:rgba(255,255,255,.7);
  line-height:1.8;
}
.cta-inner .btn{margin-top:34px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.66);
  padding:72px 0 32px;
  border-top:1px solid rgba(255,255,255,.1);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.55);
  max-width:340px;
}
.footer-title{
  font-size:13px;
  letter-spacing:.12em;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-list li{margin-bottom:11px;}
.footer-list a{
  font-size:14.5px;
  color:rgba(255,255,255,.62);
  display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-list a:hover{color:var(--lime);transform:translateX(2px);}
.footer-list li{font-size:14.5px;color:rgba(255,255,255,.62);}
.footer-contact{
  font-size:14.5px;
  line-height:2;
  color:rgba(255,255,255,.62);
}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.42);
}

/* ---------- mobile bar ---------- */
.mobile-cta{display:none;}

@media (max-width:1024px){
  :root{--sec-pad:72px;}
  .container{padding:0 24px;}
  .hero{padding:64px 0 68px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-media{order:2;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid rgba(255,255,255,.14);}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .tl-item:nth-child(2){border-right:0;}
  .tl-item{border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:6px;}
  .tl-item:nth-child(3),.tl-item:nth-child(4){border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}

@media (max-width:900px){
  .nav-menu{
    position:absolute;
    top:100%;
    left:-24px;
    right:-24px;
    display:none;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    background:var(--ink-900);
    padding:14px 24px 22px;
    border-bottom:1px solid rgba(255,255,255,.14);
  }
  .nav-menu.open{display:flex;}
  .nav-menu a{width:100%;padding:12px 0;font-size:16px;border-bottom:1px solid rgba(255,255,255,.08);}
  .nav-menu a::after{display:none;}
  .nav-menu a.active{color:var(--lime);}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-sm{display:none;}
}

@media (max-width:1023px){
  .mobile-cta{
    display:flex;
    gap:10px;
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    z-index:90;
    padding:12px 16px;
    background:rgba(11,14,12,.97);
    border-top:1px solid rgba(255,255,255,.13);
    backdrop-filter:blur(8px);
  }
  .mobile-cta .btn{flex:1;height:46px;font-size:14.5px;}
  body{padding-bottom:86px;}
}

@media (max-width:768px){
  :root{--sec-pad:56px;}
  .section-tight{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:30px;}
  .section-title{font-size:24px;}
  .flow-wall{grid-template-columns:1fr;gap:20px;}
  .flow-col{gap:20px;}
  .flow-col.offset{padding-top:0;}
  .quote-row{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid rgba(255,255,255,.14);}
  .timeline{grid-template-columns:1fr;}
  .tl-item{border-right:0;}
  .faq-a-inner{padding-right:20px;}
  .cta-dark{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:10px;}
}

@media (max-width:520px){
  .container{padding:0 20px;}
  .hero{padding:48px 0 56px;}
  .hero .lead{font-size:16px;}
  .btn{width:100%;}
  .hero-cta .btn{width:100%;}
  .flow-body{padding:20px 18px 18px;}
  .stat-num{font-size:36px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category4 */
:root{
  --lime:#B6FF3B;
  --lime-600:#9AE619;
  --ink-900:#0B0E0C;
  --ink-700:#1C211E;
  --ink-600:#3A403C;
  --muted:#6A716B;
  --paper:#F7F8F5;
  --card:#FFFFFF;
  --line:#E4E7E2;
  --clay:#FF6B3D;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,14,12,.06);
  --shadow-2:0 12px 32px rgba(11,14,12,.08);
  --ease:cubic-bezier(.22,1,.36,1);
  --fast:180ms;
  --mid:240ms;
  --section-y:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-600);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--fast) var(--ease),border-color var(--fast) var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);line-height:1.25;font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,select,textarea{font:inherit;color:inherit;}
table{border-collapse:collapse;}
:focus-visible{outline:2px solid var(--lime-600);outline-offset:3px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- 顶部信息条 ---------- */
.info-bar{background:var(--ink-900);color:rgba(255,255,255,.72);font-size:12px;letter-spacing:.04em;}
.info-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:30px;}
.info-bar-hint{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.info-bar-hint b{color:#fff;font-weight:600;}
.info-bar a{color:var(--lime);border-bottom:1px solid transparent;font-weight:600;}
.info-bar a:hover{border-bottom-color:var(--lime);}
@media (max-width:600px){.info-bar-hint b{display:none;}}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,248,245,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--mid) var(--ease),background-color var(--mid) var(--ease),box-shadow var(--mid) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 1px 2px rgba(11,14,12,.05);background:rgba(247,248,245,.98);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--ink-900);color:var(--lime);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:.02em;
  font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-main{font-size:16px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;padding:10px 14px;font-size:14px;font-weight:500;color:var(--ink-600);
  border-radius:8px;transition:color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.nav-menu a:hover{color:var(--ink-900);background:rgba(11,14,12,.04);}
.nav-menu a.active{color:var(--ink-900);font-weight:700;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--lime);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;}
.nav-toggle span{position:relative;width:16px;height:2px;background:var(--ink-900);border-radius:2px;display:block;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--ink-900);border-radius:2px;}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color var(--fast) var(--ease),color var(--fast) var(--ease),border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--mid) var(--ease);
}
.btn .arrow{transition:transform var(--fast) var(--ease);}
.btn:hover{transform:translateY(-1px);}
.btn:hover .arrow{transform:translateX(3px);}
.btn:active{transform:translateY(1px);}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;}
.btn-primary{background:var(--ink-900);color:var(--lime);border-color:var(--ink-900);}
.btn-primary:hover{background:var(--ink-700);color:var(--lime);}
.btn-lime{background:var(--lime);color:var(--ink-900);border-color:var(--lime);}
.btn-lime:hover{background:var(--lime-600);border-color:var(--lime-600);}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--lime-600);color:var(--ink-900);}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.28);}
.btn-ghost-dark:hover{border-color:var(--lime);color:var(--lime);}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--ink-900);color:rgba(255,255,255,.76);
  padding:56px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 12px);
  opacity:.9;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.08);
}
.hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.55);margin-bottom:28px;}
.breadcrumb a{color:rgba(255,255,255,.75);border-bottom:1px solid transparent;}
.breadcrumb a:hover{color:var(--lime);border-bottom-color:var(--lime);}
.breadcrumb .sep{opacity:.45;}
.breadcrumb .current{color:rgba(255,255,255,.5);}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;}
.hero h1{
  color:#fff;font-size:clamp(30px,5.4vw,52px);line-height:1.1;letter-spacing:-.02em;font-weight:800;
  max-width:18em;
}
.hero h1 em{font-style:normal;color:var(--lime);}
.hero-lead{margin-top:20px;font-size:16px;line-height:1.85;max-width:36em;color:rgba(255,255,255,.76);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);}
.hero-trust li::before{content:"";width:6px;height:6px;background:var(--lime);border-radius:50%;flex:0 0 auto;}
.hero-visual{position:relative;display:none;}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);border:1px solid rgba(255,255,255,.14);}
.hero-badge{
  position:absolute;left:16px;bottom:16px;background:var(--ink-900);color:var(--lime);
  border:1px solid rgba(182,255,59,.4);font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:999px;
}
@media (min-width:1024px){
  .hero{padding:72px 0 88px;}
  .hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center;gap:56px;}
  .hero-visual{display:block;}
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-dark{background:var(--ink-900);color:rgba(255,255,255,.74);}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:clamp(24px,3vw,28px);letter-spacing:-.01em;}
.section-head p{margin-top:12px;max-width:44em;color:var(--muted);font-size:15px;}
.section-dark .section-head p{color:rgba(255,255,255,.62);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--muted);text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime);}
.section-dark .eyebrow{color:rgba(255,255,255,.6);}
.link-more{font-size:14px;font-weight:600;color:var(--ink-900);border-bottom:1px solid var(--line);padding-bottom:2px;}
.link-more:hover{border-bottom-color:var(--lime-600);}

/* ---------- 搜索与筛选条 ---------- */
.search-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
@media (min-width:1024px){.search-panel{padding:32px 36px;}}
.search-row{display:flex;flex-direction:column;gap:12px;}
@media (min-width:768px){.search-row{flex-direction:row;align-items:center;}}
.search-field{position:relative;flex:1 1 auto;}
.search-field input{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 16px 0 44px;background:var(--paper);font-size:15px;color:var(--ink-900);
  transition:border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.search-field input::placeholder{color:#9AA29B;}
.search-field input:focus{outline:none;border-color:var(--lime-600);background:#fff;box-shadow:0 0 0 2px rgba(154,230,25,.45);}
.search-field .icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.chip{
  border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:13px;color:var(--ink-600);
  transition:border-color var(--fast) var(--ease),background-color var(--fast) var(--ease),color var(--fast) var(--ease);
}
.chip:hover{border-color:var(--lime-600);color:var(--ink-900);}
.chip.is-active{background:var(--ink-900);border-color:var(--ink-900);color:var(--lime);font-weight:600;}
.search-note{margin-top:14px;font-size:13px;color:var(--muted);}

/* ---------- FAQ 分组手风琴 ---------- */
.faq-groups{display:flex;flex-direction:column;gap:56px;margin-top:48px;}
.faq-group-head{display:flex;align-items:baseline;gap:14px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.faq-group-index{font-size:13px;font-weight:800;color:var(--ink-900);letter-spacing:.08em;}
.faq-group-head h3{font-size:20px;}
.faq-group-count{margin-left:auto;font-size:13px;color:var(--muted);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-trigger{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color var(--fast) var(--ease);
}
.faq-trigger:hover{color:var(--ink-700);}
.faq-icon{
  position:relative;flex:0 0 auto;width:22px;height:22px;margin-top:4px;
  border:1px solid var(--line);border-radius:50%;
  transition:transform var(--mid) var(--ease),border-color var(--fast) var(--ease),background-color var(--fast) var(--ease);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink-900);border-radius:2px;transition:background-color var(--fast) var(--ease),opacity var(--fast) var(--ease);}
.faq-icon::before{left:6px;top:10px;width:8px;height:1.5px;}
.faq-icon::after{left:10px;top:6px;width:1.5px;height:8px;}
.faq-trigger[aria-expanded="true"] .faq-icon{background:var(--lime);border-color:var(--lime);transform:rotate(180deg);}
.faq-trigger[aria-expanded="true"] .faq-icon::after{opacity:0;}
.faq-panel{padding:0 0 24px;max-width:56em;}
.faq-panel p{font-size:15.5px;line-height:1.85;color:var(--ink-600);}
.faq-panel p + p{margin-top:10px;}
.faq-panel .answer-list{margin-top:10px;display:flex;flex-direction:column;gap:8px;}
.faq-panel .answer-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-600);}
.faq-panel .answer-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--lime);border-radius:50%;}
.faq-panel[hidden]{display:none;}
.faq-panel .fade-in{animation:fadeUp 200ms var(--ease) both;}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}
.faq-empty{
  margin-top:32px;padding:32px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:#fff;text-align:center;color:var(--muted);font-size:15px;
}
.faq-empty[hidden]{display:none;}

/* ---------- 快捷入口（非等宽三格） ---------- */
.quick-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:768px){.quick-grid{grid-template-columns:1.4fr 1fr .9fr;}}
.quick-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color var(--fast) var(--ease),transform var(--fast) var(--ease),box-shadow var(--mid) var(--ease);
}
.quick-card:hover{border-color:var(--lime-600);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.quick-card figure{margin:0;overflow:hidden;}
.quick-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--mid) var(--ease);}
.quick-card:hover img{transform:scale(1.03);}
.quick-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.quick-body h3{font-size:18px;}
.quick-body p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.quick-link{margin-top:auto;font-size:14px;font-weight:700;color:var(--ink-900);display:inline-flex;align-items:center;gap:6px;}
.quick-card:hover .quick-link{color:var(--ink-700);}
.quick-link .arrow{transition:transform var(--fast) var(--ease);}
.quick-card:hover .quick-link .arrow{transform:translateX(3px);}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;background:var(--ink-900);color:rgba(255,255,255,.74);
  padding:64px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
}
.cta-band .container{position:relative;z-index:1;text-align:center;}
.cta-band h2{color:#fff;font-size:clamp(26px,4vw,44px);letter-spacing:-.02em;line-height:1.15;}
.cta-band p{margin:18px auto 0;max-width:40em;font-size:15.5px;color:rgba(255,255,255,.66);}
.cta-band .btn{margin-top:32px;}
@media (min-width:1024px){.cta-band{padding:112px 0;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.6);padding:64px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand .brand-main{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.45);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:32em;}
.footer-title{font-size:13px;letter-spacing:.1em;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-list li{margin-bottom:10px;}
.footer-list a{display:inline-block;color:rgba(255,255,255,.62);transition:color var(--fast) var(--ease),transform var(--fast) var(--ease);}
.footer-list a:hover{color:var(--lime);transform:translateX(2px);}
.footer-list li span{color:rgba(255,255,255,.62);}
.footer-contact{line-height:2;color:rgba(255,255,255,.6);}
.footer-contact b{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.42);
}

/* ---------- 移动端固定转化条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;gap:10px;align-items:center;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(11,14,12,.97);border-top:1px solid rgba(255,255,255,.12);
}
.mobile-bar .btn{flex:1 1 auto;min-height:44px;font-size:14px;padding:0 14px;}
@media (min-width:1024px){.mobile-bar{display:none;}}
@media (max-width:1023px){body{padding-bottom:76px;}}

@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px 18px;box-shadow:var(--shadow-2);
    display:none;
  }
  .nav-menu.is-open{display:flex;}
  .nav-menu a{padding:12px 8px;font-size:15px;}
  .nav-menu a.active::after{left:8px;right:auto;width:22px;bottom:6px;}
  .nav-actions .btn-sm{display:none;}
}
@media (max-width:520px){
  .hero{padding:44px 0 52px;}
  .hero h1{font-size:clamp(27px,7.6vw,34px);}
  .section{padding:56px 0;}
  .faq-trigger{font-size:16px;padding:18px 0;}
  .search-panel{padding:20px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}