/* roulang page: index */
/* ============================================================
   设计变量
   ============================================================ */
:root{
  --ink-900:#0E0B1A;
  --ink-700:#1A1430;
  --ink-500:#2A2148;
  --paper:#FAF7F2;
  --paper-2:#F1ECE3;
  --brand:#FF6A2B;
  --brand-600:#E4551A;
  --accent:#2ED3B7;
  --accent-2:#FFC94A;
  --text:#1C1830;
  --muted:#6B6478;
  --line:rgba(28,24,48,.12);
  --line-dark:rgba(255,255,255,.10);
  --white:#F4F1EA;
  --white-muted:rgba(244,241,234,.66);
  --success:#2FA36B;
  --warn:#E0A21B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --sh-1:0 2px 10px rgba(14,11,26,.06);
  --sh-2:0 10px 28px rgba(14,11,26,.12);
  --nav-h:76px;
  --ease:cubic-bezier(.4,.1,.2,1);
}

/* ============================================================
   基础重置
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;}
html{
  scroll-behavior:smooth;
  scroll-padding-top:96px;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;height:auto;}
a{color:var(--accent);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand);}
h1,h2,h3,h4{margin:0 0 16px;color:var(--text);font-weight:700;line-height:1.3;letter-spacing:-.2px;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding:0;list-style:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;}
:focus-visible{outline:3px solid rgba(255,106,43,.35);outline-offset:2px;}

/* ============================================================
   容器与栅格校正
   ============================================================ */
.row{max-width:1230px;}
.row.narrow{max-width:980px;}
.columns{padding-left:15px;padding-right:15px;}

/* ============================================================
   通用按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;line-height:1;
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.28);}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.34);}
.btn-ghost{background:transparent;border-color:var(--text);color:var(--text);}
.btn-ghost:hover{background:var(--paper-2);color:var(--text);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.38);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.72);color:#fff;}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ============================================================
   徽章 / 标签
   ============================================================ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.3px;
  background:rgba(46,211,183,.10);color:#1F9E88;white-space:nowrap;
}
.badge-dark{background:rgba(46,211,183,.16);color:var(--accent);}

/* ============================================================
   导航
   ============================================================ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  background:rgba(14,11,26,.88);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .28s var(--ease),box-shadow .28s var(--ease);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.site-header.is-stuck{background:var(--ink-900);box-shadow:0 8px 26px rgba(0,0,0,.38);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:20px;}
.brand{display:flex;align-items:center;gap:12px;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,106,43,.14);border:1px solid rgba(255,255,255,.12);
}
.brand-mark svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:19px;font-weight:800;letter-spacing:.5px;color:#fff;}
.brand-text em{font-style:normal;font-size:12px;letter-spacing:1px;color:rgba(255,255,255,.6);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 16px;
  font-size:16px;color:rgba(255,255,255,.86);border-radius:8px;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:16px;bottom:8px;width:0;height:3px;border-radius:2px;
  background:var(--brand);transition:width .22s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.05);}
.nav-links a:hover::after{width:20px;}
.nav-links a.is-active{color:var(--accent);}
.nav-links a.is-active::after{width:20px;background:var(--accent);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;inset:0;z-index:1000;background:var(--ink-900);
  padding:20px 22px 120px;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line-dark);}
.drawer-title{font-size:13px;letter-spacing:2px;color:rgba(255,255,255,.55);font-weight:600;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);color:#fff;font-size:22px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.drawer-links{display:flex;flex-direction:column;margin:24px 0 auto;}
.drawer-links a{
  display:block;padding:18px 4px;font-size:18px;font-weight:600;color:rgba(255,255,255,.9);
  border-bottom:1px solid var(--line-dark);
}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--accent);}
.drawer-cta{margin-top:28px;width:100%;}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;background:var(--ink-900);color:var(--white);
  padding:calc(var(--nav-h) + 92px) 0 96px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    radial-gradient(rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:64px 64px, 104px 104px;
  background-position:0 0, 32px 52px;
}
.hero::after{
  content:"";position:absolute;right:0;bottom:0;width:40%;height:56%;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:linear-gradient(215deg,#000,transparent 72%);
  mask-image:linear-gradient(215deg,#000,transparent 72%);
}
.hero-grid{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;min-height:520px;}
.hero-copy{padding-right:24px;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;height:32px;padding:0 14px;margin-bottom:24px;
  border-radius:999px;background:rgba(46,211,183,.12);border:1px solid rgba(46,211,183,.28);
  font-size:13px;letter-spacing:1px;color:var(--accent);
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.hero h1{
  font-size:50px;line-height:1.15;font-weight:800;letter-spacing:-.5px;color:#fff;margin-bottom:22px;
}
.hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:17px;line-height:1.85;color:var(--white-muted);max-width:520px;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:13px;color:rgba(244,241,234,.72);margin:0;}
.hero-points li{position:relative;padding-left:16px;}
.hero-points li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.14);background:var(--ink-700);
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
.hero-figure::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-img);
  background:rgba(14,11,26,.08);pointer-events:none;
}

/* ============================================================
   板块通用
   ============================================================ */
.section{padding:96px 0;}
.section-paper{background:var(--paper);}
.section-paper2{background:var(--paper-2);}
.section-ink{background:var(--ink-900);color:var(--white);position:relative;overflow:hidden;}
.section-ink::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:72px 72px;
}
.section-ink > *{position:relative;z-index:2;}
.section-head{margin-bottom:48px;max-width:720px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:1.5px;color:var(--brand);margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--brand);}
.section-head h2{font-size:34px;line-height:1.3;font-weight:700;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--muted);margin:0;line-height:1.85;}
.section-ink .section-head h2{color:#fff;}
.section-ink .section-head p{color:var(--white-muted);}
.section-ink .section-head .kicker{color:var(--accent);}
.section-ink .section-head .kicker::before{background:var(--accent);}

/* ============================================================
   入口指引 2+1
   ============================================================ */
.guide-card{
  position:relative;display:block;height:100%;min-height:220px;padding:28px 26px 26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.guide-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .25s var(--ease);
}
.guide-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(255,106,43,.32);}
.guide-card:hover::before{transform:scaleY(1);}
.guide-num{
  display:block;font-size:15px;font-weight:800;letter-spacing:2px;color:var(--accent-2);
  font-variant-numeric:tabular-nums;margin-bottom:16px;
}
.guide-card h3{font-size:21px;margin-bottom:10px;}
.guide-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0;}
.guide-arrow{
  position:absolute;right:22px;bottom:22px;width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper-2);color:var(--text);transition:background .22s var(--ease),color .22s var(--ease);
}
.guide-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.guide-card:hover .guide-arrow{background:var(--brand);color:#fff;}

.guide-aside{
  position:relative;height:100%;min-height:220px;padding:30px 28px;
  background:var(--ink-900);color:var(--white);border:1px solid var(--line-dark);
  border-radius:var(--r-card);display:flex;flex-direction:column;justify-content:space-between;
  overflow:hidden;
}
.guide-aside::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:56px 56px;
}
.guide-aside > *{position:relative;z-index:2;}
.guide-aside h3{color:#fff;font-size:19px;margin-bottom:18px;}
.guide-aside ul{margin:0 0 24px;}
.guide-aside li{
  position:relative;padding-left:22px;font-size:14.5px;line-height:1.8;
  color:var(--white-muted);margin-bottom:12px;
}
.guide-aside li:last-child{margin-bottom:0;}
.guide-aside li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;
  border:1.75px solid var(--accent);border-radius:3px;
}
.guide-aside .btn{width:100%;}

/* ============================================================
   数据条
   ============================================================ */
.stats{display:flex;flex-wrap:wrap;}
.stat{
  flex:1 1 25%;max-width:25%;padding:8px 24px;text-align:left;
  border-right:1px solid var(--line-dark);
}
.stat:last-child{border-right:0;}
.stat-num{
  display:flex;align-items:baseline;gap:6px;
  font-size:50px;line-height:1.05;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;margin-bottom:10px;
}
.stat-num em{font-style:normal;font-size:16px;font-weight:600;color:rgba(244,241,234,.7);letter-spacing:0;}
.stat p{font-size:14px;color:rgba(244,241,234,.66);margin:0;line-height:1.7;}

/* ============================================================
   场景卡
   ============================================================ */
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(255,106,43,.32);}
.scene-media{position:relative;overflow:hidden;}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--paper-2);transition:transform .5s var(--ease);}
.scene-media::after{content:"";position:absolute;inset:0;background:rgba(14,11,26,.08);pointer-events:none;}
.scene-card:hover .scene-media img{transform:scale(1.04);}
.scene-body{padding:24px 24px 26px;}
.scene-body h3{font-size:20px;margin-bottom:10px;}
.scene-body p{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0 0 16px;}
.scene-offset{margin-top:24px;}

/* ============================================================
   图文交替
   ============================================================ */
.split{display:flex;flex-wrap:wrap;align-items:center;margin-bottom:72px;}
.split:last-child{margin-bottom:0;}
.split-inner{display:flex;flex-wrap:wrap;align-items:center;}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);background:var(--paper-2);
}
.split-copy h3{font-size:26px;margin-bottom:16px;position:relative;padding-left:18px;}
.split-copy h3::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--brand);
}
.split-copy p{font-size:15.5px;line-height:1.9;color:var(--muted);}
.check-list{margin:20px 0 0;}
.check-list li{
  position:relative;padding-left:32px;font-size:15px;line-height:1.8;color:var(--text);margin-bottom:12px;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;
  border:1.75px solid var(--accent);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:10px;width:8px;height:4px;
  border-left:1.75px solid var(--accent);border-bottom:1.75px solid var(--accent);
  transform:rotate(-45deg);
}

/* ============================================================
   最新信息
   ============================================================ */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.news-head .section-head{margin-bottom:0;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--text);
  padding-bottom:4px;border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow:hover{color:var(--brand);border-color:var(--brand);}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

.news-row{
  position:relative;display:flex;align-items:center;gap:24px;
  padding:18px 22px;margin-bottom:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  color:var(--text);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:center;transition:transform .24s var(--ease);
}
.news-row:hover{transform:translateX(4px);box-shadow:var(--sh-2);border-color:rgba(255,106,43,.32);color:var(--text);}
.news-row:hover::before{transform:scaleY(1);}
.news-date{
  flex:0 0 96px;width:96px;text-align:center;padding-right:18px;
  border-right:1px solid var(--line);
}
.news-ym{display:block;font-size:12px;color:var(--muted);letter-spacing:.5px;}
.news-day{
  display:block;font-size:28px;font-weight:800;line-height:1.15;margin-top:2px;
  color:var(--text);font-variant-numeric:tabular-nums;
}
.news-body{flex:1 1 auto;min-width:0;}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;margin:0 0 4px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s var(--ease);
}
.news-row:hover .news-title{color:var(--brand-600);}
.news-desc{
  font-size:14px;color:var(--muted);line-height:1.7;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{flex:0 0 auto;display:flex;align-items:center;gap:16px;}
.news-arrow{
  width:34px;height:34px;border-radius:50%;background:var(--paper-2);
  display:flex;align-items:center;justify-content:center;color:var(--text);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.news-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.news-row:hover .news-arrow{background:var(--brand);color:#fff;}

.news-empty{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:rgba(255,255,255,.5);padding:56px 24px;text-align:center;
}
.news-empty .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(46,211,183,.10);color:#1F9E88;
}
.news-empty .empty-icon svg{width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.news-empty p{font-size:15.5px;color:var(--muted);margin-bottom:22px;}

/* ============================================================
   FAQ
   ============================================================ */
.faq-side{position:sticky;top:96px;}
.faq-side h2{font-size:32px;margin-bottom:14px;}
.faq-side p{font-size:15px;color:var(--muted);margin-bottom:24px;}
.faq-accordion{margin:0;border:0;background:transparent;}
.faq-accordion .accordion-item{
  border:0;border-top:1px solid var(--line);background:transparent;
}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-accordion .accordion-title{
  position:relative;display:block;padding:22px 46px 22px 0;
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  border:0;background:transparent;transition:color .2s var(--ease);
}
.faq-accordion .accordion-title::before{display:none;}
.faq-accordion .accordion-title::after{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:2px;
  background:var(--brand);transform:translateY(-50%);transition:transform .25s var(--ease);
}
.faq-accordion .accordion-title:hover{color:var(--brand-600);}
.faq-accordion .accordion-item.is-active .accordion-title{color:var(--brand-600);}
.faq-accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg);}
.faq-accordion .accordion-item .accordion-title span.plus{
  position:absolute;right:2px;top:50%;width:2px;height:14px;
  background:var(--brand);transform:translateY(-50%);
}
.faq-accordion .accordion-content{
  padding:0 46px 24px 0;border:0;background:transparent;
  font-size:15.5px;line-height:1.9;color:var(--muted);
}
.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* ============================================================
   表单 / CTA
   ============================================================ */
.cta-block{display:flex;flex-wrap:wrap;align-items:flex-start;gap:40px;}
.cta-copy h2{font-size:32px;margin-bottom:16px;}
.cta-copy p{font-size:15.5px;color:var(--muted);line-height:1.9;margin-bottom:0;max-width:460px;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px 28px;box-shadow:var(--sh-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--paper);color:var(--text);
  font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.8;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(255,106,43,.14);
}
.field input::placeholder,.field textarea::placeholder{color:rgba(107,100,120,.7);}
.form-actions{margin-top:24px;}
.form-actions .btn{width:100%;}
.form-note{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-btn);
  background:rgba(47,163,107,.10);border:1px solid rgba(47,163,107,.28);
  color:#227a50;font-size:14px;line-height:1.7;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{background:var(--ink-900);color:var(--white);padding:80px 0 0;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:80px 80px;
}
.site-footer > *{position:relative;z-index:2;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,106,43,.16);}
.footer-about{font-size:14.5px;line-height:1.85;color:var(--white-muted);max-width:280px;margin-bottom:18px;}
.footer-contact{font-size:14px;color:rgba(244,241,234,.78);line-height:2;}
.footer-contact span{display:block;color:rgba(244,241,234,.5);font-size:12.5px;letter-spacing:.5px;}
.footer-col h4{
  font-size:14px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;
  color:rgba(255,255,255,.7);margin-bottom:20px;
}
.footer-col ul{margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:15px;color:rgba(255,255,255,.8);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:64px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(244,241,234,.55);
}
.footer-bottom a{color:rgba(244,241,234,.7);}
.footer-bottom a:hover{color:var(--accent);}

/* ============================================================
   响应式
   ============================================================ */
@media screen and (max-width:1024px){
  :root{--nav-h:64px;}
  .section{padding:72px 0;}
  .hero{padding:calc(var(--nav-h) + 56px) 0 72px;}
  .hero-grid{min-height:0;}
  .hero h1{font-size:36px;}
  .hero-copy{padding-right:0;margin-bottom:40px;}
  .hero-sub{max-width:100%;}
  .section-head h2{font-size:28px;}
  .stat{flex:1 1 50%;max-width:50%;padding:24px 20px;border-right:0;border-bottom:1px solid var(--line-dark);}
  .stat:nth-child(odd){border-right:1px solid var(--line-dark);}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  .stat-num{font-size:42px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .faq-side{position:static;margin-bottom:36px;}
  .scene-offset{margin-top:0;}
  .news-head{align-items:flex-start;}
  .cta-block{gap:32px;}
}
@media screen and (max-width:640px){
  body{font-size:15.5px;}
  .columns{padding-left:9px;padding-right:9px;}
  .section{padding:56px 0;}
  .hero{padding:calc(var(--nav-h) + 44px) 0 56px;}
  .hero h1{font-size:29px;line-height:1.25;}
  .hero-sub{font-size:15.5px;margin-bottom:26px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-figure img{aspect-ratio:16/11;max-height:240px;}
  .brand-text strong{font-size:17px;}
  .brand-text em{font-size:11px;}
  .section-head h2{font-size:24px;}
  .section-head p{font-size:15px;}
  .section-head{margin-bottom:32px;}
  .stat{flex:1 1 50%;max-width:50%;padding:20px 14px;}
  .stat-num{font-size:34px;}
  .stat p{font-size:13px;}
  .split{margin-bottom:52px;}
  .split-copy h3{font-size:22px;}
  .split-media{margin-bottom:24px;}
  .split-media.order-first{margin-bottom:24px;}
  .news-row{flex-wrap:wrap;gap:12px;padding:16px 18px;}
  .news-date{
    flex:0 0 100%;width:100%;border-right:0;border-bottom:1px solid var(--line);
    padding:0 0 10px;display:flex;align-items:baseline;gap:10px;text-align:left;
  }
  .news-day{font-size:20px;margin-top:0;}
  .news-meta{width:100%;justify-content:space-between;}
  .news-arrow{width:30px;height:30px;}
  .faq-accordion .accordion-title{font-size:16px;padding-right:40px;}
  .cta-copy h2{font-size:24px;}
  .form-card{padding:24px 20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:44px;}
}

/* roulang page: article */
:root{
  --ink-900:#0E0B1A;
  --ink-700:#1A1430;
  --ink-500:#2A2148;
  --paper:#FAF7F2;
  --paper-2:#F1ECE3;
  --brand:#FF6A2B;
  --brand-600:#E4551A;
  --accent:#2ED3B7;
  --accent-2:#FFC94A;
  --text:#1C1830;
  --muted:#6B6478;
  --line:rgba(28,24,48,.12);
  --dark-text:#F4F1EA;
  --dark-muted:rgba(244,241,234,.66);
  --success:#2FA36B;
  --warn:#E0A21B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:999px;
  --r-input:12px;
  --sh-1:0 2px 10px rgba(14,11,26,.06);
  --sh-2:0 10px 28px rgba(14,11,26,.12);
  --pad-sec:96px;
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  padding-top:76px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text);text-decoration:none}
a:hover{color:var(--brand-600)}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(255,106,43,.35);outline-offset:2px;border-radius:6px}
.row{max-width:1264px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px}
.row .columns{padding-left:16px;padding-right:16px}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.2px}
p{margin:0 0 16px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(228,85,26,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:transparent;color:var(--text);border-color:rgba(28,24,48,.35)}
.btn-secondary:hover{background:var(--paper-2);color:var(--text);transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-block{width:100%}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:rgba(255,255,255,.1);color:#fff}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;line-height:1;color:#147a67;background:rgba(46,211,183,.14);
  border:1px solid rgba(46,211,183,.28);white-space:nowrap;
}
.badge-dark{color:var(--accent);background:rgba(46,211,183,.16);border-color:rgba(46,211,183,.3)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:rgba(14,11,26,.88);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:var(--ink-900);box-shadow:0 8px 26px rgba(14,11,26,.32)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex-shrink:0}
.brand:hover{color:#fff}
.brand-mark{display:inline-flex;width:28px;height:28px}
.brand-mark svg{width:100%;height:100%;fill:var(--brand)}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{color:#fff;font-size:18px;font-weight:800;letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:2px;color:rgba(255,255,255,.6);margin-top:4px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:16px;color:rgba(255,255,255,.82);transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:3px;width:0;
  background:var(--brand);border-radius:2px;transition:width .22s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:20px}
.nav-links a.is-active{color:var(--accent)}
.nav-links a.is-active::after{width:20px;background:var(--accent)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.22);
  border-radius:12px;background:transparent;position:relative;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:20px;height:2px;background:#fff;border-radius:2px;
  transform:translateX(-50%);transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;top:-6px;transform:none}
.nav-toggle span::after{content:"";left:0;top:6px;transform:none}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);
  color:var(--dark-text);
  padding:52px 0 56px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    radial-gradient(rgba(255,201,74,.05) 1px,transparent 1px);
  background-size:34px 34px,72px 72px;
  background-position:0 0,17px 22px;
}
.article-hero::after{
  content:"";position:absolute;right:-40px;bottom:-40px;width:320px;height:320px;pointer-events:none;
  background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:32px 32px;
  opacity:.7;
}
.article-hero .row{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:rgba(244,241,234,.6);margin-bottom:22px;
}
.breadcrumb a{color:rgba(244,241,234,.7);transition:color .18s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(244,241,234,.35)}
.breadcrumb .crumb-current{
  display:inline-block;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  vertical-align:bottom;color:rgba(244,241,234,.9);
}
.article-hero h1{
  color:#fff;font-size:44px;line-height:1.18;letter-spacing:-.5px;font-weight:800;
  max-width:900px;margin:0 0 22px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(244,241,234,.66);
  padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  max-width:900px;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.35);display:inline-block}
.article-meta .meta-cat{color:var(--accent)}

/* ---------- 正文布局 ---------- */
.article-main{background:var(--paper);padding:64px 0 96px}
.article-body{
  max-width:760px;font-size:16px;line-height:1.9;color:var(--text);
}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;font-size:23px;line-height:1.45;font-weight:700;
  margin:40px 0 16px;padding-left:16px;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;margin:30px 0 12px;color:var(--text)}
.article-body h4{font-size:17px;margin:24px 0 10px;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;list-style:none}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px;font-size:16px;line-height:1.9}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.article-body ol{counter-reset:olnum}
.article-body ol li{padding-left:28px}
.article-body ol li::before{
  counter-increment:olnum;content:counter(olnum) ".";
  position:absolute;left:0;top:0;color:var(--accent);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:20px;background:var(--paper-2);
  border-left:4px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;
  font-size:16px;line-height:1.9;color:var(--ink-500);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px 0;box-shadow:var(--sh-1);border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{
  margin-top:10px;text-align:center;font-size:13px;color:var(--muted);
}
.article-body a{color:#128c77;border-bottom:1px solid rgba(18,140,119,.45);transition:color .18s ease,border-color .18s ease}
.article-body a:hover{color:var(--brand-600);border-color:var(--brand-600)}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}
.article-body th{background:var(--paper-2);font-weight:600;color:var(--ink-500)}
.article-body .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:24px 0}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--paper-2);padding:48px 28px;text-align:center;
}
.empty-state svg{width:40px;height:40px;stroke:var(--brand);fill:none;stroke-width:1.75;margin:0 auto 14px}
.empty-state p{font-size:17px;font-weight:600;color:var(--text);margin:0 0 18px}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-size:15px;font-weight:700;color:var(--text);margin:0 0 16px;
  padding-bottom:12px;border-bottom:1px solid var(--line);letter-spacing:.5px;
}
.side-links{list-style:none;margin:0;padding:0}
.side-links li{margin-bottom:8px}
.side-links li:last-child{margin-bottom:0}
.side-links a{
  display:flex;align-items:center;gap:10px;
  padding:11px 14px;border-radius:12px;font-size:15px;color:var(--text);
  border:1px solid transparent;transition:all .18s ease;
}
.side-links a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--line);flex-shrink:0;transition:background .18s ease;
}
.side-links a:hover{background:var(--paper-2);color:var(--brand-600);transform:translateX(2px)}
.side-links a:hover::before{background:var(--brand)}
.side-links a.is-current{
  background:rgba(46,211,183,.1);border-color:rgba(46,211,183,.35);color:#147a67;font-weight:600;
}
.side-links a.is-current::before{background:var(--accent)}
.side-tips{list-style:none;margin:0;padding:0}
.side-tips li{
  position:relative;padding-left:20px;font-size:14px;line-height:1.8;color:var(--muted);margin-bottom:10px;
}
.side-tips li:last-child{margin-bottom:0}
.side-tips li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:2px;
  border:1.5px solid var(--accent);transform:rotate(45deg);
}
.side-cta{
  position:relative;overflow:hidden;background:var(--ink-900);border-radius:var(--r-card);
  padding:24px;color:var(--dark-text);border:1px solid rgba(255,255,255,.1);
}
.side-cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
.side-cta>*{position:relative;z-index:1}
.side-cta h3{font-size:17px;color:#fff;margin:0 0 10px;padding:0;border:none}
.side-cta p{font-size:13.5px;line-height:1.8;color:rgba(244,241,234,.66);margin:0 0 18px}

/* ---------- 文末导航 ---------- */
.post-nav{margin-top:48px;padding-top:32px;border-top:1px solid var(--line)}
.post-nav-grid{display:flex;gap:16px;flex-wrap:wrap}
.post-nav-card{
  flex:1 1 240px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;transition:all .2s ease;display:block;
}
.post-nav-card:hover{
  border-color:rgba(255,106,43,.3);transform:translateY(-3px);box-shadow:var(--sh-2);color:var(--text);
}
.post-nav-card .dir{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:1px;
  color:var(--muted);margin-bottom:10px;
}
.post-nav-card .ttl{
  display:block;font-size:17px;font-weight:600;line-height:1.5;color:var(--text);
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.post-nav-card:hover .ttl{color:var(--brand-600)}
.post-nav-actions{margin-top:24px}

/* ---------- 相关推荐 ---------- */
.related{background:var(--paper-2);padding:var(--pad-sec) 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700}
.section-head .sub{font-size:15px;color:var(--muted);margin:8px 0 0}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:#128c77;
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--brand);
  transition:width .18s ease;
}
.link-arrow:hover{color:var(--brand-600)}
.link-arrow:hover::after{width:100%}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:all .22s ease;height:100%;display:flex;flex-direction:column;
}
.card:hover{border-color:rgba(255,106,43,.3);transform:translateY(-3px);box-shadow:var(--sh-2)}
.card-media{
  position:relative;aspect-ratio:16/10;background:var(--paper-2);overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:19px;line-height:1.45;font-weight:600}
.card-body p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}
.card-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;
  gap:10px;font-size:13px;color:var(--muted);
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(244,241,234,.8);padding:76px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:38px 38px;
}
.site-footer .row{position:relative;z-index:1}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(244,241,234,.66);margin:0 0 18px;max-width:340px}
.footer-contact{font-size:13.5px;color:rgba(244,241,234,.5);line-height:1.8}
.footer-contact span{display:block;font-size:12px;letter-spacing:1.5px;color:var(--accent);margin-bottom:4px}
.footer-col{margin-bottom:24px}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:2px;color:rgba(255,255,255,.7);
  margin:0 0 16px;
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{
  display:inline-block;font-size:15px;color:rgba(255,255,255,.8);
  transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding:20px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(244,241,234,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  body{padding-top:60px}
  .row{padding-left:24px;padding-right:24px}
  .row .columns{padding-left:12px;padding-right:12px}
  .nav-inner{height:60px}
  .nav-links{
    position:fixed;top:60px;left:0;right:0;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-900);padding:16px 24px 120px;
    overflow-y:auto;border-top:1px solid rgba(255,255,255,.08);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{
    font-size:18px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.88);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--accent)}
  .nav-toggle{display:block}
  .nav-cta .btn-primary{
    position:fixed;left:24px;right:24px;bottom:24px;z-index:220;display:none;
  }
  body.nav-open .nav-cta .btn-primary{display:inline-flex}
  body.nav-open{overflow:hidden}
  .article-hero{padding:36px 0 44px}
  .article-hero h1{font-size:34px}
  .article-main{padding:48px 0 72px}
  .sidebar{position:static;margin-top:40px}
  .related{padding:72px 0}
  .site-footer{padding:56px 0 0}
}
@media (max-width:640px){
  body{padding-top:60px;font-size:15.5px}
  .row{padding-left:18px;padding-right:18px}
  .row .columns{padding-left:0;padding-right:0}
  .brand-text strong{font-size:16px}
  .brand-text em{font-size:10px;letter-spacing:1.4px}
  .article-hero{padding:28px 0 36px}
  .article-hero h1{font-size:28px;line-height:1.25;letter-spacing:-.2px}
  .breadcrumb{font-size:12px;margin-bottom:16px}
  .breadcrumb .crumb-current{max-width:190px}
  .article-meta{font-size:12.5px;gap:8px}
  .article-main{padding:36px 0 56px}
  .article-body{max-width:100%;font-size:15.5px}
  .article-body h2{font-size:20px;margin:30px 0 14px}
  .article-body h3{font-size:17.5px}
  .article-body li{font-size:15.5px}
  .article-body table{font-size:14px}
  .section-head h2{font-size:24px}
  .post-nav-grid{flex-direction:column}
  .post-nav-card{flex:1 1 auto}
  .related{padding:56px 0}
  .card-body{padding:18px}
  .side-card{padding:18px}
  .footer-bottom{font-size:12.5px;flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E0B1A;
  --ink-700:#1A1430;
  --ink-500:#2A2148;
  --paper:#FAF7F2;
  --paper-2:#F1ECE3;
  --brand:#FF6A2B;
  --brand-600:#E4551A;
  --accent:#2ED3B7;
  --accent-2:#FFC94A;
  --text:#1C1830;
  --muted:#6B6478;
  --line:rgba(28,24,48,.12);
  --dark-text:#F4F1EA;
  --dark-muted:rgba(244,241,234,.66);
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:999px;
  --shadow-1:0 2px 10px rgba(14,11,26,.06);
  --shadow-2:0 10px 28px rgba(14,11,26,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
:focus-visible{outline:3px solid rgba(255,106,43,.35);outline-offset:3px;border-radius:4px;}

/* ===== 容器与栅格 ===== */
.row{
  max-width:1224px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}
.row > .columns{
  padding-left:12px;
  padding-right:12px;
}
.columns.end{float:left;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  font-size:15.5px;
  font-weight:600;
  line-height:1;
  border:1.5px solid transparent;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,106,43,.32);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--text);color:var(--text);}
.btn-ghost:hover{background:var(--paper-2);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-arrow::after{
  content:"";
  width:7px;height:7px;
  border-top:1.75px solid currentColor;
  border-right:1.75px solid currentColor;
  transform:rotate(45deg);
  margin-left:2px;
  transition:transform .2s ease;
}
.btn-arrow:hover::after{transform:rotate(45deg) translate(2px,-2px);}

/* ===== 头部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(14,11,26,.9);
  border-bottom:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(8px);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:var(--ink-900);
  box-shadow:0 8px 24px rgba(0,0,0,.3);
}
.nav-inner{
  max-width:1224px;
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-left:32px;
  padding-right:32px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:11px;
  background:rgba(255,106,43,.14);
  border:1px solid rgba(255,106,43,.32);
  flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:var(--brand);}
.brand-mark svg path:last-child{fill:var(--accent-2);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16.5px;font-weight:700;color:#fff;letter-spacing:.5px;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:1.6px;
  color:rgba(255,255,255,.6);
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15.5px;
  color:rgba(255,255,255,.86);
  border-radius:8px;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  bottom:2px;
  width:0;
  height:3px;
  border-radius:2px;
  background:var(--brand);
  transition:width .22s ease;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{width:20px;}
.nav-links a.is-active{color:var(--accent);}
.nav-links a.is-active::after{width:20px;background:var(--accent);}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:20px;height:2px;
  background:#fff;
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:rotate(45deg);top:0;}
body.nav-open .nav-toggle span::after{transform:rotate(-45deg);top:0;}

/* ===== 通用板块 ===== */
.section{padding:96px 0;}
.section--paper{background:var(--paper);}
.section--paper2{background:var(--paper-2);}
.section--ink{
  position:relative;
  background:var(--ink-900);
  color:var(--dark-text);
  overflow:hidden;
}
.section--ink::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(rgba(244,241,234,.06) 1px, transparent 1px),
    radial-gradient(rgba(244,241,234,.04) 1px, transparent 1px);
  background-size:132px 132px, 68px 68px;
  background-position:0 0, 34px 34px;
}
.section--ink > .row{position:relative;z-index:1;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:34px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.3px;
  margin-bottom:12px;
}
.section-head p{font-size:15.5px;color:var(--muted);line-height:1.9;}
.section--ink .section-head p{color:var(--dark-muted);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:2px;
  color:var(--brand);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;height:3px;
  border-radius:2px;
  background:var(--brand);
}

/* ===== 分类页页头 ===== */
.page-hero{
  position:relative;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  padding:72px 0 56px;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-80px;
  width:340px;height:340px;
  border:1px solid rgba(28,24,48,.08);
  border-radius:24px;
  transform:rotate(12deg);
  pointer-events:none;
}
.page-hero .row{position:relative;z-index:1;}
.hero-copy h1{
  font-size:48px;
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.6px;
  margin:16px 0 18px;
}
.hero-lead{
  font-size:16.5px;
  line-height:1.9;
  color:var(--muted);
  max-width:620px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:8px 22px;
  margin-top:26px;
}
.hero-points li{
  position:relative;
  padding-left:16px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.2px;
}
.hero-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  margin-top:-3px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
}
.hero-figure{
  margin-top:8px;
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-img);
  border:1px solid rgba(28,24,48,.1);
  box-shadow:var(--shadow-1);
  background:var(--paper);
}

/* ===== 频道切换胶囊 ===== */
.channel-tabs{
  display:flex;
  gap:12px;
  margin-top:38px;
  overflow-x:auto;
  padding-bottom:6px;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.channel-tabs::-webkit-scrollbar{display:none;}
.channel-tabs a{
  flex:0 0 auto;
  padding:10px 22px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  background:var(--paper);
  font-size:14.5px;
  font-weight:600;
  color:var(--text);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.channel-tabs a:hover{
  border-color:rgba(255,106,43,.45);
  color:var(--brand-600);
  transform:translateY(-2px);
}
.channel-tabs a.is-current{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
.channel-tabs a.is-current:hover{color:#fff;}

/* ===== 介绍段 ===== */
.intro-copy p{
  font-size:16px;
  line-height:1.95;
  color:var(--text);
  margin-bottom:18px;
}
.intro-copy p:last-child{margin-bottom:0;}
.intro-copy p strong{color:var(--brand-600);font-weight:600;}
.intro-side{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 26px;
  margin-top:6px;
}
.intro-side h3{
  font-size:17px;
  font-weight:600;
  margin-bottom:14px;
}
.intro-side li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.9;
  margin-bottom:10px;
}
.intro-side li:last-child{margin-bottom:0;}
.intro-side li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--accent-2);
}

/* ===== 图文交替模块 ===== */
.split-block{padding:88px 0;}
.split-block + .split-block{border-top:1px solid var(--line);}
.split-copy h2{
  font-size:32px;
  line-height:1.32;
  font-weight:700;
  letter-spacing:-.3px;
  margin-bottom:16px;
}
.split-copy p{
  font-size:15.8px;
  line-height:1.95;
  color:var(--muted);
  margin-bottom:22px;
}
.media-frame{
  position:relative;
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid rgba(28,24,48,.1);
  background:var(--paper-2);
  box-shadow:var(--shadow-1);
}
.media-frame img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:rgba(14,11,26,.08);
  pointer-events:none;
}
.check-list li{
  position:relative;
  padding-left:34px;
  margin-bottom:14px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text);
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:5px;
  width:20px;height:20px;
  border-radius:50%;
  border:1.75px solid var(--accent);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:6.5px;top:9px;
  width:6px;height:11px;
  border:solid var(--accent);
  border-width:0 1.75px 1.75px 0;
  transform:rotate(45deg);
}

/* ===== 信息卡组 ===== */
.info-cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.info-card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:36px 28px 30px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  overflow:hidden;
}
.info-card::before{
  content:"";
  position:absolute;
  top:0;left:28px;
  width:46px;height:3px;
  background:var(--accent);
  border-radius:0 0 3px 3px;
}
.info-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-2);
  border-color:rgba(255,106,43,.3);
}
.info-card .icon{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(46,211,183,.12);
  margin-bottom:20px;
}
.info-card .icon svg{
  width:22px;height:22px;
  stroke:var(--accent);
  stroke-width:1.75;
  fill:none;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.info-card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:12px;
}
.info-card p{
  font-size:14.8px;
  line-height:1.9;
  color:var(--muted);
}

/* ===== FAQ ===== */
.faq-head{margin-bottom:36px;}
.faq-head h2{
  font-size:34px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.3px;
  margin-bottom:12px;
}
.faq-head p{font-size:15.5px;color:var(--muted);}
.faq-list{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 4px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  transition:color .2s ease;
  min-height:44px;
}
.faq-q:hover{color:var(--brand-600);}
.faq-item.is-open .faq-q{color:var(--brand-600);}
.faq-icon{
  position:relative;
  flex:0 0 24px;
  width:24px;height:24px;
  border-radius:50%;
  border:1.5px solid var(--line);
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.is-open .faq-icon{border-color:rgba(255,106,43,.5);background:rgba(255,106,43,.08);}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:1px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:6px;top:10.5px;width:10px;height:1.5px;}
.faq-icon::after{left:10.2px;top:6px;width:1.5px;height:10px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{display:none;padding:0 40px 26px 4px;}
.faq-item.is-open .faq-a{display:block;animation:fadeIn .24s ease;}
.faq-a p{
  font-size:15.5px;
  line-height:1.9;
  color:var(--muted);
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ===== 页尾 CTA 条 ===== */
.cta-bar{
  position:relative;
  background:var(--ink-900);
  color:var(--dark-text);
  padding:60px 0;
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    radial-gradient(rgba(244,241,234,.06) 1px, transparent 1px),
    radial-gradient(rgba(244,241,234,.04) 1px, transparent 1px);
  background-size:140px 140px, 72px 72px;
  background-position:0 0, 36px 36px;
  pointer-events:none;
}
.cta-bar::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:100%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,201,74,.6),transparent);
}
.cta-bar .row{position:relative;z-index:1;align-items:center;}
.cta-bar h2{
  font-size:28px;
  line-height:1.4;
  font-weight:700;
  margin-bottom:10px;
}
.cta-bar p{
  font-size:15px;
  color:var(--dark-muted);
  line-height:1.85;
}
.cta-bar .cta-action{text-align:right;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--ink-900);
  color:var(--dark-text);
  padding:72px 0 0;
  border-top:1px solid rgba(255,255,255,.08);
}
.site-footer .row > .columns{
  padding-left:12px;
  padding-right:12px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:11px;
  margin-bottom:18px;
}
.footer-about{
  font-size:14.5px;
  line-height:1.9;
  color:var(--dark-muted);
  max-width:340px;
}
.footer-contact{
  margin-top:20px;
  font-size:13.5px;
  color:var(--dark-muted);
  line-height:1.8;
}
.footer-contact span{
  display:inline-block;
  font-size:12px;
  letter-spacing:1.4px;
  color:var(--accent);
  margin-right:10px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  letter-spacing:.14em;
  color:rgba(244,241,234,.7);
  margin-bottom:18px;
}
.footer-col li{margin-bottom:11px;}
.footer-col a{
  display:inline-block;
  font-size:15px;
  color:rgba(244,241,234,.8);
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(-2px);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:56px;
  padding:22px 0 28px;
  font-size:13px;
  color:var(--dark-muted);
}

/* ===== 响应式：平板 ===== */
@media screen and (max-width:1024px){
  .nav-inner{height:64px;padding-left:24px;padding-right:24px;}
  .nav-links{
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:96px 24px 120px;
    background:var(--ink-900);
    transform:translateX(100%);
    transition:transform .28s ease;
    z-index:70;
    overflow-y:auto;
  }
  .nav-links a{
    font-size:18px;
    padding:18px 4px;
    border-bottom:1px solid rgba(255,255,255,.1);
    border-radius:0;
    color:rgba(255,255,255,.9);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--accent);}
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-toggle{display:block;z-index:90;}
  .nav-cta .btn-sm{display:none;}
  body.nav-open .nav-cta .btn-sm{
    display:inline-flex;
    position:fixed;
    left:24px;right:24px;bottom:28px;
    z-index:90;
    width:calc(100% - 48px);
  }
  .section{padding:72px 0;}
  .page-hero{padding:56px 0 44px;}
  .hero-copy h1{font-size:38px;}
  .hero-figure{display:none;}
  .split-block{padding:64px 0;}
  .split-copy h2{font-size:28px;}
  .info-cards{grid-template-columns:1fr 1fr;}
  .cta-bar .cta-action{text-align:left;margin-top:24px;}
  .faq-head h2,.section-head h2{font-size:28px;}
}

/* ===== 响应式：移动端 ===== */
@media screen and (max-width:640px){
  body{font-size:15.5px;}
  .nav-inner{height:60px;padding-left:18px;padding-right:18px;}
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10px;letter-spacing:1.2px;}
  .section{padding:56px 0;}
  .page-hero{padding:44px 0 36px;}
  .hero-copy h1{font-size:29px;letter-spacing:-.2px;margin:14px 0 14px;}
  .hero-lead{font-size:15.5px;}
  .hero-points{flex-direction:column;gap:8px;margin-top:20px;}
  .channel-tabs{margin-top:26px;}
  .channel-tabs a{padding:9px 18px;font-size:14px;}
  .split-block{padding:52px 0;}
  .split-copy h2{font-size:24px;}
  .split-copy p{font-size:15.5px;}
  .check-list li{font-size:15.5px;padding-left:32px;}
  .info-cards{grid-template-columns:1fr;}
  .info-card{padding:30px 22px 26px;}
  .faq-head h2,.section-head h2{font-size:24px;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .faq-a{padding:0 8px 22px 2px;}
  .cta-bar{padding:48px 0;}
  .cta-bar h2{font-size:22px;}
  .site-footer{padding-top:56px;}
  .footer-bottom{margin-top:40px;font-size:12.5px;flex-direction:column;gap:8px;}
  .row{padding-left:18px;padding-right:18px;}
  .row > .columns{padding-left:0;padding-right:0;}
  .footer-col{margin-top:32px;}
  .footer-col:first-child{margin-top:0;}
  .btn{width:100%;}
  .cta-bar .btn{width:100%;}
  .nav-cta .btn-sm{width:auto;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E0B1A;
  --ink-700:#1A1430;
  --ink-500:#2A2148;
  --paper:#FAF7F2;
  --paper-2:#F1ECE3;
  --brand:#FF6A2B;
  --brand-600:#E4551A;
  --accent:#2ED3B7;
  --accent-2:#FFC94A;
  --text:#1C1830;
  --muted:#6B6478;
  --line:rgba(28,24,48,.12);
  --dark-text:#F4F1EA;
  --dark-muted:rgba(244,241,234,.66);
  --ok:#2FA36B;
  --warn:#E0A21B;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --sh-1:0 2px 10px rgba(14,11,26,.06);
  --sh-2:0 10px 28px rgba(14,11,26,.12);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-600)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.3px}
p{margin:0 0 18px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(255,106,43,.35);outline-offset:2px}

/* ---------- grid ---------- */
.row{
  max-width:1232px;
  margin:0 auto;
  padding-left:17px;
  padding-right:17px;
  display:flex;
  flex-wrap:wrap;
  width:100%;
}
.row::before,.row::after{display:none}
.row > .columns,.row > .column{padding-left:15px;padding-right:15px}
@media (max-width:1024px){
  .row{padding-left:9px;padding-right:9px}
}
@media (max-width:640px){
  .row{padding-left:3px;padding-right:3px}
}

/* ---------- section rhythm ---------- */
.section{padding:96px 0}
.section--paper2{background:var(--paper-2)}
.section--tight{padding-top:0}
@media (max-width:1024px){
  .section{padding:72px 0}
}
@media (max-width:640px){
  .section{padding:56px 0}
}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:700;letter-spacing:2px;
  color:var(--brand);margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--brand)}
.sec-head h2{font-size:34px;color:var(--text)}
.sec-head p{margin:14px 0 0;color:var(--muted);font-size:16px}
@media (max-width:1024px){.sec-head h2{font-size:29px}}
@media (max-width:640px){.sec-head h2{font-size:24px}.sec-head{margin-bottom:32px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(14,11,26,.88);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:var(--ink-900);box-shadow:0 8px 26px rgba(14,11,26,.34)}
.nav-inner{
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:74px;
}
.brand{display:flex;align-items:center;gap:12px;color:#fff;flex:0 0 auto}
.brand:hover{color:#fff}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(160deg,rgba(255,106,43,.24),rgba(46,211,183,.14));
  border:1px solid rgba(255,255,255,.14);
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:var(--accent-2);stroke-width:1.6;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.6px;color:#fff}
.brand-text em{font-style:normal;font-size:11.5px;letter-spacing:1.4px;color:rgba(255,255,255,.6);margin-top:4px}

.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;display:inline-block;
  padding:26px 0;
  font-size:15.5px;font-weight:500;
  color:rgba(255,255,255,.82);
  transition:color .18s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:17px;
  width:20px;height:3px;border-radius:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--accent)}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--accent)}

.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;position:relative;
  border-radius:10px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);
}
.nav-toggle span{
  position:absolute;left:50%;top:50%;
  width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translate(-50%,-50%);
  transition:background .2s ease;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;
  width:18px;height:2px;border-radius:2px;background:#fff;
  transition:transform .24s ease,top .24s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:rotate(-45deg)}

@media (max-width:1024px){
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:96px 24px 40px;
    background:var(--ink-900);
    z-index:-1;
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none;z-index:1}
  .nav-links a{
    width:100%;font-size:18px;padding:18px 0;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-links a::after{bottom:10px}
  .nav-links a::before{display:none}
  .site-header .nav-cta .btn-sm{height:38px;padding:0 14px;font-size:13.5px}
}
@media (max-width:640px){
  .nav-inner{min-height:60px;gap:12px}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:9px}
  .brand-mark svg{width:19px;height:19px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px;letter-spacing:1px}
  .site-header .nav-cta .btn-sm{height:36px;padding:0 12px;font-size:12.5px}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;flex:0 0 auto}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.26)}
.btn-primary:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(255,106,43,.26)}
.btn-ghost{background:transparent;border:1.5px solid var(--text);color:var(--text)}
.btn-ghost:hover{background:var(--paper-2);color:var(--text);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  background-color:var(--paper-2);
  background-image:radial-gradient(rgba(28,24,48,.055) 1px,transparent 1px);
  background-size:24px 24px;
  padding:72px 0 76px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-head::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--brand) 0%,var(--brand) 22%,rgba(255,106,43,0) 22%);
}
.page-head .row{align-items:center;gap:16px}
.page-head h1{font-size:44px;line-height:1.18;letter-spacing:-.6px;max-width:760px}
.page-head .lead{
  margin:20px 0 0;max-width:660px;
  font-size:17px;line-height:1.85;color:var(--muted);
}
.cat-tabs{
  display:flex;gap:10px;margin-top:30px;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;-ms-overflow-style:none;
  padding-bottom:4px;
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tab{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:42px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper);
  font-size:14.5px;font-weight:600;color:var(--text);
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.cat-tab:hover{background:#fff;border-color:rgba(255,106,43,.45);color:var(--brand-600);transform:translateY(-1px)}
.cat-tab.is-current{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.24)}
.cat-tab.is-current:hover{background:var(--brand-600);color:#fff}
.page-head-media{margin:0;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-2)}
.page-head-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
@media (max-width:1024px){
  .page-head{padding:56px 0 60px}
  .page-head h1{font-size:34px}
  .page-head-media{display:none}
}
@media (max-width:640px){
  .page-head{padding:44px 0 48px}
  .page-head h1{font-size:28px}
  .page-head .lead{font-size:15.5px}
}

/* ---------- intro + feature ---------- */
.intro-lead{
  max-width:840px;
  font-size:17px;line-height:1.9;color:var(--text);
}
.intro-lead p:last-child{margin-bottom:0}
.feature-row{align-items:center;margin-top:64px;gap:16px 0}
.feature-row:first-of-type{margin-top:56px}
.feature-media{
  margin:0;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);box-shadow:var(--sh-1);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.feature-body h2{font-size:31px;margin-bottom:16px}
.feature-body > p{color:var(--muted);font-size:15.5px;max-width:520px}
.check-list{margin-top:22px}
.check-list li{
  position:relative;padding-left:32px;margin-bottom:14px;
  font-size:15.5px;line-height:1.8;color:var(--text);
}
.check-list li:last-child{margin-bottom:0}
.check-list li svg{
  position:absolute;left:0;top:4px;
  width:19px;height:19px;fill:none;stroke:var(--accent);stroke-width:1.75;
  stroke-linecap:round;stroke-linejoin:round;
}
.feature-reverse{flex-direction:row-reverse}
@media (max-width:1024px){
  .feature-row{margin-top:48px}
  .feature-body h2{font-size:26px}
  .feature-reverse{flex-direction:row}
}
@media (max-width:640px){
  .feature-row{margin-top:40px}
  .feature-body h2{font-size:23px;margin-top:22px}
  .intro-lead{font-size:15.5px}
}

/* ---------- info cards ---------- */
.info-card{
  position:relative;height:100%;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px 28px 32px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.info-card::before{
  content:"";position:absolute;left:0;top:0;
  width:46px;height:3px;border-radius:0 0 3px 0;background:var(--accent);
}
.info-card:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.32);box-shadow:var(--sh-2)}
.info-card .ico{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:12px;background:rgba(46,211,183,.1);
  border:1px solid rgba(46,211,183,.28);margin-bottom:18px;
}
.info-card .ico svg{width:22px;height:22px;fill:none;stroke:var(--accent);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.info-card h3{font-size:20px;margin-bottom:10px}
.info-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}
.card-gap{margin-bottom:30px}
@media (max-width:640px){
  .info-card{padding:24px 22px 26px}
  .info-card h3{font-size:18px}
  .card-gap{margin-bottom:16px}
}

/* ---------- guide rows ---------- */
.guide-list{margin-top:8px}
.guide-row{
  position:relative;display:flex;align-items:center;gap:24px;
  padding:22px 26px;margin-bottom:14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.guide-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.guide-row:hover{transform:translateX(4px);border-color:rgba(255,106,43,.32);box-shadow:var(--sh-2)}
.guide-row:hover::before{transform:scaleY(1)}
.guide-num{
  flex:0 0 auto;font-size:20px;font-weight:800;
  color:#C99215;font-variant-numeric:tabular-nums;
  letter-spacing:.5px;
}
.guide-main{flex:1 1 auto;min-width:0}
.guide-main h3{font-size:17.5px;margin-bottom:6px;transition:color .18s ease}
.guide-row:hover .guide-main h3{color:var(--brand-600)}
.guide-main p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.75}
.guide-tag{
  flex:0 0 auto;display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(46,211,183,.1);color:#14826F;
  font-size:12.5px;font-weight:600;white-space:nowrap;
}
.guide-arrow{flex:0 0 auto;width:20px;height:20px;stroke:var(--muted);fill:none;stroke-width:1.5}
@media (max-width:640px){
  .guide-row{flex-wrap:wrap;gap:10px;padding:20px 20px}
  .guide-main{flex:1 1 100%;order:2}
  .guide-num{order:1}
  .guide-tag{order:3}
  .guide-arrow{display:none}
}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand-600)}
.faq-item.is-open .faq-q{color:var(--brand-600)}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;color:var(--brand)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .24s ease;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg)}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height .3s ease,opacity .25s ease;
}
.faq-item.is-open .faq-a{max-height:420px;opacity:1}
.faq-a p{
  margin:0;padding:0 0 24px;max-width:720px;
  font-size:15.5px;line-height:1.9;color:var(--muted);
}
@media (max-width:640px){
  .faq-q{font-size:16px;padding:20px 0}
  .faq-a p{font-size:15px}
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  padding:52px 56px;
  border-radius:20px;
  background-color:var(--ink-900);
  background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:20px 20px;
  border:1px solid rgba(255,255,255,.1);
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;width:120px;height:3px;
  background:linear-gradient(90deg,var(--brand),rgba(255,106,43,0));
}
.cta-band-text{max-width:640px}
.cta-band h2{color:var(--dark-text);font-size:30px;margin-bottom:12px}
.cta-band p{margin:0;color:var(--dark-muted);font-size:15.5px;line-height:1.85}
.cta-band-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-2px)}
@media (max-width:1024px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 34px;gap:26px}
  .cta-band h2{font-size:25px}
}
@media (max-width:640px){
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-band h2{font-size:22px}
  .cta-band-actions{width:100%}
  .cta-band-actions .btn{width:100%}
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);
  color:var(--dark-text);
  padding:76px 0 0;
  position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:1px;background:rgba(255,255,255,.08);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer-about{color:var(--dark-muted);font-size:15px;line-height:1.85;margin:0 0 22px;max-width:340px}
.footer-contact{
  display:flex;flex-direction:column;gap:4px;
  font-size:14px;color:rgba(255,255,255,.78);
  padding-left:14px;border-left:2px solid var(--brand);
}
.footer-contact span{font-size:12.5px;letter-spacing:1px;color:rgba(255,255,255,.5)}
.footer-col h4{
  font-size:13.5px;letter-spacing:2px;font-weight:700;
  color:rgba(255,255,255,.7);margin-bottom:18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{
  display:inline-block;font-size:15px;color:rgba(255,255,255,.8);
  transition:color .18s ease,transform .18s ease;
}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:52px;padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.55);
}
@media (max-width:1024px){
  .site-footer{padding-top:60px}
  .footer-col{margin-top:32px}
  .footer-bottom{margin-top:32px}
}
@media (max-width:640px){
  .footer-about{max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;font-size:12.5px}
}