/* roulang page: index */
:root{
  --star-teal:#17D9C4;
  --star-teal-soft:rgba(23,217,196,.12);
  --star-gold:#F2C14E;
  --night:#0B1116;
  --night-2:#101A20;
  --night-3:#0B1016;
  --mist:#F7F8F4;
  --card:#FFFFFF;
  --line:#DDE4DF;
  --ink:#16201F;
  --ink-2:#5B6A66;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 10px 30px rgba(11,17,22,.08);
  --shadow-hover:0 16px 40px rgba(11,17,22,.14),0 0 0 1px rgba(23,217,196,.25);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"DIN Alternate","Roboto Mono","Noto Sans SC",sans-serif;
  --container:1200px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--mist);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover,a:focus{color:#0E8E82;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-family:var(--font);font-weight:800;letter-spacing:.01em;color:var(--ink);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,217,196,.35);border-radius:6px;}

/* ============ 容器与栅格 ============ */
.row{max-width:var(--container);margin-left:auto;margin-right:auto;width:100%;}
@media screen and (min-width:1440px){.row{max-width:1280px;}}
.columns{padding-left:16px;padding-right:16px;}
.row .row{margin-left:-16px;margin-right:-16px;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 26px;min-height:50px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--star-gold);color:var(--night);
  box-shadow:0 8px 22px rgba(242,193,78,.28);
}
.btn-primary:hover,.btn-primary:focus{
  background:#FFD46B;color:var(--night);
  box-shadow:0 10px 28px rgba(242,193,78,.35),0 0 0 3px rgba(23,217,196,.30);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;color:#EDF4F1;
  border-color:rgba(237,244,241,.34);
}
.btn-ghost:hover,.btn-ghost:focus{
  color:#fff;border-color:rgba(23,217,196,.75);background:rgba(23,217,196,.10);
}
.btn-solid{
  background:var(--star-teal);color:#062B27;
  box-shadow:0 8px 22px rgba(23,217,196,.25);
}
.btn-solid:hover,.btn-solid:focus{
  background:#3EEBD8;color:#062B27;transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(23,217,196,.32);
}
.btn-block{width:100%;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--night);
  border-bottom:1px solid rgba(23,217,196,.22);
  box-shadow:0 6px 26px rgba(11,17,22,.35);
}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0) 0%,rgba(23,217,196,.85) 45%,rgba(23,217,196,0) 100%);
}
.nav-wrap{
  max-width:var(--container);margin:0 auto;
  min-height:72px;padding:0 20px;
  display:flex;align-items:center;gap:28px;
}
@media screen and (min-width:1440px){.nav-wrap{max-width:1280px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;color:#F2F7F5;}
.brand:hover,.brand:focus{color:#fff;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(23,217,196,.20),rgba(242,193,78,.14));
  border:1px solid rgba(23,217,196,.45);
  box-shadow:0 0 18px rgba(23,217,196,.25);
}
.brand-mark svg{display:block;}
.brand-text{
  font-size:17px;font-weight:800;letter-spacing:.02em;color:#F2F7F5;
  white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:8px;}
.main-nav a{
  position:relative;display:block;
  padding:10px 16px;border-radius:10px;
  font-size:15.5px;font-weight:600;color:#B9C6C2;
  transition:color .18s ease,background .18s ease;
}
.main-nav a:hover,.main-nav a:focus{color:var(--star-teal);background:rgba(23,217,196,.08);}
.main-nav a.active{color:var(--star-teal);}
.main-nav a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;
  background:var(--star-teal);border-radius:2px;
  box-shadow:0 0 10px rgba(23,217,196,.85);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  background:var(--star-gold);color:var(--night);
  font-size:15px;font-weight:800;letter-spacing:.02em;
  transition:background .18s ease,box-shadow .18s ease,transform .18s ease;
}
.nav-cta:hover,.nav-cta:focus{
  background:#FFD46B;color:var(--night);transform:translateY(-1px);
  box-shadow:0 8px 22px rgba(242,193,78,.32),0 0 0 3px rgba(23,217,196,.28);
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;
  background:rgba(255,255,255,.04);border:1px solid rgba(23,217,196,.35);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#DCE7E3;border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{
  display:none;background:var(--night);
  border-top:1px solid rgba(23,217,196,.18);
  padding:10px 20px 22px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;
  padding:0 6px;font-size:16px;font-weight:600;color:#C9D6D2;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.mobile-drawer a:hover,.mobile-drawer a:focus,.mobile-drawer a.active{color:var(--star-teal);}
.mobile-drawer .drawer-cta{
  margin-top:16px;min-height:48px;border-radius:11px;
  background:var(--star-gold);color:var(--night);font-weight:800;
  justify-content:center;border-bottom:0;
}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--night);
  min-height:600px;
  display:flex;align-items:center;
  padding:88px 0 78px;
}
.hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.04);
}
.hero-veil{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 460px at 12% 22%,rgba(23,217,196,.20),rgba(23,217,196,0) 62%),
    linear-gradient(104deg,rgba(11,17,22,.94) 0%,rgba(11,17,22,.80) 46%,rgba(11,17,22,.58) 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:999px;
  background:rgba(23,217,196,.10);
  border:1px solid rgba(23,217,196,.42);
  color:#8CF3E6;font-size:13.5px;font-weight:700;letter-spacing:.06em;
  margin-bottom:24px;
}
.hero-eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--star-teal);box-shadow:0 0 10px rgba(23,217,196,.95);
}
.hero h1{
  color:#FFFFFF;
  font-size:clamp(2.25rem,4.2vw,3.5rem);
  line-height:1.2;
  letter-spacing:.005em;
  max-width:740px;
  margin-bottom:22px;
  text-shadow:0 2px 28px rgba(0,0,0,.45);
}
.hero-sub{
  color:#CBD8D4;font-size:18px;line-height:1.8;
  max-width:620px;margin-bottom:34px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.hero-tags li{
  padding:7px 15px;border-radius:999px;
  font-size:13.5px;font-weight:600;color:#B7C6C2;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.13);
}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section--tight{padding:76px 0;}
.section--night{background:var(--night-2);color:#D6E2DE;}
.section--night h2,.section--night h3{color:#FFFFFF;}
.section--night .lead{color:#A8B7B3;}
.kicker{
  display:inline-block;
  font-size:13px;font-weight:800;letter-spacing:.16em;
  color:#0E8E82;text-transform:none;
  margin-bottom:14px;
}
.section--night .kicker{color:var(--star-teal);}
.section-head{max-width:780px;margin-bottom:52px;}
.section-head h2{
  font-size:clamp(1.65rem,2.6vw,2.25rem);
  line-height:1.3;margin-bottom:16px;
}
.lead{color:var(--ink-2);font-size:17px;line-height:1.85;margin:0;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;color:#0E8E82;font-size:15.5px;
  border-bottom:2px solid rgba(23,217,196,.35);
  padding-bottom:2px;transition:color .18s ease,border-color .18s ease,gap .18s ease;
}
.text-link:hover,.text-link:focus{color:#0B6F65;border-color:var(--star-teal);gap:12px;}

/* ============ 入口板块 ============ */
.entry-section{background:var(--mist);}
.sticky-head{position:sticky;top:104px;}
@media screen and (max-width:1023px){.sticky-head{position:static;margin-bottom:36px;}}
.sticky-head h2{
  font-size:clamp(1.65rem,2.6vw,2.1rem);
  line-height:1.32;margin-bottom:18px;
}
.sticky-head .lead{margin-bottom:26px;}
.entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;}
.entry-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px 26px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.entry-card:hover{
  transform:translateY(-2px);
  border-color:rgba(23,217,196,.42);
  box-shadow:var(--shadow-hover);
}
.entry-num{
  font-family:var(--font-num);
  font-size:15px;font-weight:700;letter-spacing:.14em;
  color:#0E8E82;
  display:inline-flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.entry-num::after{
  content:"";flex:1;height:1px;min-width:26px;
  background:linear-gradient(90deg,rgba(23,217,196,.6),rgba(23,217,196,0));
}
.entry-card h3{font-size:1.2rem;line-height:1.45;margin-bottom:10px;}
.entry-card p{color:var(--ink-2);font-size:15.5px;line-height:1.78;margin:0 0 18px;}
.entry-card .text-link{margin-top:auto;font-size:14.5px;}
@media screen and (max-width:639px){.entry-grid{grid-template-columns:1fr;}}

/* ============ 数据条 ============ */
.stats-bar{
  background:var(--night-2);
  border-top:1px solid rgba(23,217,196,.18);
  border-bottom:1px solid rgba(23,217,196,.18);
  padding:52px 0;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.stat{
  padding:6px 0;
  border-left:1px solid rgba(23,217,196,.22);
  padding-left:22px;
}
.stat:first-child{border-left:0;padding-left:0;}
@media screen and (max-width:639px){
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .stat:nth-child(3){border-left:0;padding-left:0;}
}
.stat-num{
  display:block;font-family:var(--font-num);
  font-size:clamp(2rem,3.4vw,2.6rem);font-weight:700;line-height:1.1;
  color:var(--star-teal);
  text-shadow:0 0 24px rgba(23,217,196,.35);
  margin-bottom:8px;
}
.stat-label{display:block;color:#9FB0AC;font-size:14.5px;line-height:1.6;}

/* ============ 场景非对称网格 ============ */
.scene-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:stretch;}
.scene-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.scene-card{
  position:relative;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--shadow-card);
  display:block;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.scene-card:hover,.scene-card:focus{
  transform:translateY(-2px);
  border-color:rgba(23,217,196,.42);
  box-shadow:var(--shadow-hover);
}
.scene-card img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.scene-card:hover img{transform:scale(1.04);}
.scene-card--large{min-height:460px;}
.scene-side .scene-card{min-height:218px;}
.scene-body{
  position:absolute;left:0;right:0;bottom:0;
  padding:26px 24px 22px;
  background:linear-gradient(180deg,rgba(11,17,22,0) 0%,rgba(11,17,22,.82) 46%,rgba(11,17,22,.94) 100%);
  color:#fff;
}
.scene-body h3{color:#fff;font-size:1.2rem;line-height:1.4;margin-bottom:8px;}
.scene-body p{color:#BCCAC6;font-size:14.5px;line-height:1.7;margin:0;}
.scene-badge{
  display:inline-block;margin-bottom:10px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.05em;
  color:#0B1116;background:var(--star-teal);
}
.scene-side .scene-badge{background:rgba(242,193,78,.95);}
@media screen and (max-width:1023px){
  .scene-grid{grid-template-columns:1fr;}
  .scene-card--large{min-height:360px;}
}
@media screen and (max-width:639px){
  .scene-side{grid-template-rows:auto;}
  .scene-side .scene-card{min-height:260px;}
}

/* ============ 步骤 ============ */
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px 24px;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-2px);border-color:rgba(23,217,196,.42);box-shadow:var(--shadow-hover);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:14px;
  font-family:var(--font-num);font-size:16px;font-weight:700;
  color:#062B27;background:var(--star-teal);
  box-shadow:0 6px 18px rgba(23,217,196,.32);
  margin-bottom:18px;
}
.step h3{font-size:1.1rem;line-height:1.45;margin-bottom:10px;}
.step p{color:var(--ink-2);font-size:15px;line-height:1.78;margin:0;}
@media screen and (max-width:1023px){.steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media screen and (max-width:639px){.steps-grid{grid-template-columns:1fr;}}

/* ============ 最新信息 ============ */
.news-section{background:var(--mist);}
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:48px;}
.news-head h2{font-size:clamp(1.65rem,2.6vw,2.25rem);line-height:1.3;margin-bottom:12px;}
.news-head .lead{max-width:640px;}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
@media screen and (max-width:1023px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media screen and (max-width:639px){.news-grid{grid-template-columns:1fr;}}
.post-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;height:100%;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(23,217,196,.42);box-shadow:var(--shadow-hover);}
.post-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#E7ECE8;}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.post-card:hover .post-cover img{transform:scale(1.05);}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-meta{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-bottom:12px;
}
.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.03em;
  color:#0E8E82;background:rgba(23,217,196,.13);
  border:1px solid rgba(23,217,196,.32);
  white-space:nowrap;
}
.post-time{font-size:13px;color:#8C9A96;font-family:var(--font-num);}
.post-title{font-size:1.08rem;line-height:1.5;margin-bottom:10px;}
.post-title a{color:var(--ink);}
.post-title a:hover,.post-title a:focus{color:#0E8E82;}
.post-excerpt{
  color:var(--ink-2);font-size:14.8px;line-height:1.75;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-more{margin-top:auto;font-size:14.5px;}
.empty-state{
  background:var(--card);border:1px dashed #C9D4CF;border-radius:var(--radius-card);
  padding:46px 26px;text-align:center;color:var(--ink-2);font-size:15.5px;
}

/* ============ FAQ ============ */
.faq-section{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.faq-left h2{font-size:clamp(1.65rem,2.6vw,2.2rem);line-height:1.32;margin-bottom:18px;}
.faq-left .lead{margin-bottom:26px;}
.faq-note{
  background:var(--mist);
  border:1px solid var(--line);
  border-left:3px solid var(--star-teal);
  border-radius:12px;
  padding:18px 20px;
  font-size:14.5px;color:var(--ink-2);line-height:1.75;
}
.faq-acc.accordion{background:transparent;margin:0;border:0;}
.faq-acc .accordion-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-acc .accordion-item:hover{border-color:rgba(23,217,196,.40);}
.faq-acc .accordion-item.is-active{
  border-color:rgba(23,217,196,.6);
  box-shadow:inset 3px 0 0 var(--star-teal),0 12px 30px rgba(11,17,22,.08);
}
.faq-acc .accordion-title{
  display:block;position:relative;
  padding:19px 56px 19px 22px;
  font-size:16.5px;font-weight:700;color:var(--ink);
  background:var(--card);border:0;
  transition:background .18s ease,color .18s ease;
}
.faq-acc .accordion-title:hover,.faq-acc .accordion-title:focus{
  background:rgba(23,217,196,.07);color:#0B6F65;
}
.faq-acc .accordion-title::before{
  content:"+";
  position:absolute;right:18px;top:50%;left:auto;
  width:28px;height:28px;line-height:26px;text-align:center;
  margin-top:0;transform:translateY(-50%);
  border-radius:50%;
  border:1px solid rgba(23,217,196,.55);
  background:rgba(23,217,196,.08);
  color:#0E8E82;font-size:17px;font-weight:700;
  transition:transform .22s ease,background .22s ease;
}
.faq-acc .accordion-item.is-active .accordion-title::before{
  content:"+";
  transform:translateY(-50%) rotate(45deg);
  background:rgba(23,217,196,.20);
}
.faq-acc .accordion-content{
  padding:0 22px 20px;
  border-top:0;
  background:var(--card);
  color:var(--ink-2);
  font-size:15.5px;line-height:1.78;
}

/* ============ 联系 / CTA ============ */
.contact-section{
  background:linear-gradient(160deg,#0B1116 0%,#101A20 62%,#0B1116 100%);
  color:#D6E2DE;
  position:relative;overflow:hidden;
}
.contact-section::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 420px at 84% 12%,rgba(23,217,196,.16),rgba(23,217,196,0) 68%);
  pointer-events:none;
}
.contact-inner{position:relative;z-index:2;}
.contact-section h2{color:#fff;font-size:clamp(1.7rem,2.8vw,2.3rem);line-height:1.3;margin-bottom:16px;}
.contact-section .lead{color:#A9B8B4;margin-bottom:28px;}
.contact-points{display:grid;gap:14px;margin-top:30px;}
.contact-points li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:#B7C6C2;line-height:1.7;
}
.contact-points li::before{
  content:"";flex:0 0 auto;margin-top:9px;
  width:7px;height:7px;border-radius:50%;
  background:var(--star-teal);box-shadow:0 0 10px rgba(23,217,196,.9);
}
.form-card{
  background:rgba(255,255,255,.97);
  border:1px solid rgba(23,217,196,.22);
  border-radius:20px;
  padding:34px 30px;
  box-shadow:0 24px 60px rgba(0,0,0,.35);
  color:var(--ink);
}
.form-card h3{font-size:1.25rem;margin-bottom:8px;}
.form-card .form-sub{font-size:14.5px;color:var(--ink-2);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:14.5px;font-weight:700;color:var(--ink);
  margin-bottom:8px;letter-spacing:.01em;
}
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select,
.field textarea{
  width:100%;
  min-height:50px;
  padding:12px 14px;
  font-family:var(--font);font-size:15.5px;color:var(--ink);
  background:#FBFCFA;
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
  margin:0;
  box-shadow:none;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#5B6A66 50%),linear-gradient(135deg,#5B6A66 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#FFFFFF;
  border-color:var(--star-teal);
  box-shadow:0 0 0 3px rgba(23,217,196,.28);
}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-bottom:20px;}
.check-row input[type="checkbox"]{
  width:18px;height:18px;margin:4px 0 0;flex:0 0 auto;
  accent-color:#17D9C4;
}
.check-row label{font-size:13.5px;color:var(--ink-2);line-height:1.65;font-weight:500;margin:0;}
.form-feedback{
  margin-top:16px;padding:12px 14px;border-radius:10px;
  background:rgba(23,217,196,.10);
  border:1px solid rgba(23,217,196,.32);
  font-size:13.5px;color:#0B6F65;line-height:1.65;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--night-3);
  border-top:1px solid rgba(23,217,196,.30);
  padding:72px 0 0;
  color:#9FB0AC;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:#F2F7F5;}
.footer-brand .brand-text{font-size:17px;}
.footer-desc{font-size:14.5px;line-height:1.8;color:#93A39F;max-width:290px;}
.footer-col h4{
  color:#E8F1EE;font-size:15px;font-weight:800;
  letter-spacing:.06em;margin-bottom:18px;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col a{color:#9FB0AC;font-size:14.5px;transition:color .18s ease;}
.footer-col a:hover,.footer-col a:focus{color:var(--star-teal);}
.footer-col p{font-size:14.5px;line-height:1.8;color:#93A39F;margin:0 0 10px;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.07);
  padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#6E7E7A;
}
@media screen and (max-width:639px){
  .footer-bottom{flex-direction:column;}
}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .main-nav,.nav-right .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-wrap{min-height:64px;gap:14px;}
  .section{padding:72px 0;}
  .section--tight{padding:60px 0;}
  .hero{min-height:520px;padding:64px 0 60px;}
  .hero-sub{font-size:16.5px;}
}
@media screen and (max-width:639px){
  body{font-size:16px;}
  .hero{min-height:480px;padding:52px 0 50px;}
  .hero h1{font-size:2rem;}
  .hero-sub{font-size:15.5px;margin-bottom:28px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section--tight{padding:52px 0;}
  .section-head{margin-bottom:34px;}
  .form-card{padding:26px 20px;}
  .steps-grid{gap:16px;}
  .post-body{padding:18px 18px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --ink:#0B1116;
  --ink-2:#0B1016;
  --bg:#F7F8F4;
  --card:#FFFFFF;
  --border:#DDE4DF;
  --text:#16201F;
  --muted:#5B6A66;
  --teal:#17D9C4;
  --teal-soft:rgba(23,217,196,.12);
  --gold:#F2C14E;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 10px 30px rgba(11,17,22,.08);
  --shadow-hover:0 16px 40px rgba(11,17,22,.14),0 0 0 1px rgba(23,217,196,.25);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--text);text-decoration:none;transition:color .2s ease;}
a:hover{color:#0FBEAC;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--text);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,217,196,.35);border-radius:6px;}
.row{max-width:var(--container);margin-left:auto;margin-right:auto;}
.row .columns{padding-left:16px;padding-right:16px;}
.wrap{max-width:var(--container);margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid rgba(23,217,196,.18);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0),rgba(23,217,196,.85),rgba(23,217,196,0));
  pointer-events:none;
}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.site-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.06rem;letter-spacing:.01em;}
.site-brand:hover{color:#fff;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(23,217,196,.12);border:1px solid rgba(23,217,196,.35);}
.main-nav{display:flex;align-items:center;gap:34px;}
.main-nav a{
  position:relative;display:inline-block;color:#B9C4C1;font-size:15px;line-height:1;
  padding:26px 0;letter-spacing:.01em;
}
.main-nav a:hover{color:var(--teal);}
.main-nav a.active{color:var(--teal);text-shadow:0 0 12px rgba(23,217,196,.35);}
.main-nav a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;border-radius:2px;
  background:var(--teal);box-shadow:0 0 8px rgba(23,217,196,.75);
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;cursor:pointer;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:#fff;
}
.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;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(180deg,rgba(11,17,22,.82),rgba(11,17,22,.70)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:56px 0 60px;min-height:300px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 18% 30%,rgba(23,217,196,.20),transparent 38%),
    radial-gradient(circle at 82% 70%,rgba(242,193,78,.13),transparent 42%);
}
.hero-inner{position:relative;max-width:var(--container);margin:0 auto;padding:0 20px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.68);margin-bottom:22px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb .sep{color:rgba(255,255,255,.38);}
.breadcrumb .current{color:#fff;}
.hero-title{
  font-size:clamp(2rem,3.6vw,2.95rem);line-height:1.22;color:#fff;
  max-width:820px;margin-bottom:18px;
}
.hero-title .hl{color:var(--teal);}
.hero-lead{max-width:760px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.02em;
  background:rgba(23,217,196,.12);border:1px solid rgba(23,217,196,.38);color:#C7F7F0;
}
.tag.gold{background:rgba(242,193,78,.12);border-color:rgba(242,193,78,.45);color:#F7DFA8;}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section.alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:#0FBEAC;background:var(--teal-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.section-title{font-size:clamp(1.65rem,2.6vw,2.25rem);line-height:1.3;margin-bottom:14px;}
.section-desc{color:var(--muted);font-size:16.5px;line-height:1.85;}

/* ---------- intro strip ---------- */
.intro-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:34px 32px;margin-top:-46px;position:relative;z-index:2;
}
.intro-item{display:flex;gap:14px;align-items:flex-start;}
.intro-num{
  flex:0 0 auto;font-family:"DIN Alternate","Roboto Mono",sans-serif;
  font-size:1.05rem;font-weight:700;color:var(--teal);
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--teal-soft);border:1px solid rgba(23,217,196,.3);
}
.intro-item h3{font-size:1.02rem;margin-bottom:6px;}
.intro-item p{color:var(--muted);font-size:14.5px;line-height:1.75;}

/* ---------- group cards ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}
.group-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.group-card:hover{transform:translateY(-2px);border-color:rgba(23,217,196,.45);box-shadow:var(--shadow-hover);}
.group-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E8EDEA;}
.group-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.group-card:hover .group-media img{transform:scale(1.03);}
.group-media .card-index{
  position:absolute;left:14px;top:14px;
  font-family:"DIN Alternate","Roboto Mono",sans-serif;font-weight:700;font-size:13px;
  color:var(--ink);background:var(--gold);border-radius:999px;padding:4px 12px;letter-spacing:.04em;
}
.group-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1;}
.group-body h3{font-size:1.24rem;line-height:1.4;}
.group-body p{color:var(--muted);font-size:15.5px;line-height:1.78;}
.link-arrow{
  margin-top:auto;padding-top:6px;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:#0FBEAC;
}
.link-arrow::after{content:"→";transition:transform .2s ease;}
.group-card:hover .link-arrow::after{transform:translateX(4px);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px;}
.step{position:relative;padding-right:8px;}
.step-num{
  width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:"DIN Alternate","Roboto Mono",sans-serif;font-weight:700;font-size:15px;
  color:#fff;background:var(--ink);border:2px solid rgba(23,217,196,.55);
  box-shadow:0 0 0 4px rgba(23,217,196,.10);margin-bottom:18px;
}
.step:not(:last-child)::after{
  content:"";position:absolute;top:24px;left:64px;right:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(23,217,196,.55),rgba(23,217,196,.08));
}
.step h3{font-size:1.1rem;margin-bottom:8px;}
.step p{color:var(--muted);font-size:15px;line-height:1.78;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 6fr;gap:48px;align-items:start;}
.faq-left h2{font-size:clamp(1.6rem,2.4vw,2.1rem);line-height:1.3;margin-bottom:14px;}
.faq-left p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.faq-left .mini-note{
  margin-top:22px;padding:18px 20px;border-radius:var(--radius-sm);
  background:rgba(23,217,196,.07);border:1px solid rgba(23,217,196,.24);
  font-size:14px;color:#12655D;line-height:1.75;
}
.accordion{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);margin:0;}
.accordion-item + .accordion-item{border-top:1px solid var(--border);}
.accordion-title{
  display:block;position:relative;padding:18px 56px 18px 24px;
  font-size:16.5px;font-weight:700;color:var(--text);background:#fff;border:none;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.accordion-title:hover{background:rgba(23,217,196,.08);}
.accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:1.4rem;font-weight:400;line-height:1;color:var(--teal);transition:transform .2s ease;
}
.accordion-item.is-active .accordion-title::before{content:"−";}
.accordion-item.is-active .accordion-title{border-left:3px solid var(--teal);padding-left:21px;}
.accordion-content{
  padding:0 24px 20px 24px;background:#fff;border:none;
  color:var(--muted);font-size:15.5px;line-height:1.78;
}
.accordion-content[aria-hidden="true"]{display:none;}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  border-radius:20px;padding:56px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 12% 20%,rgba(23,217,196,.22),transparent 45%),
             radial-gradient(circle at 88% 85%,rgba(242,193,78,.14),transparent 45%);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-text h2{font-size:clamp(1.5rem,2.4vw,2rem);color:#fff;margin-bottom:12px;line-height:1.35;}
.cta-text p{color:rgba(255,255,255,.78);font-size:16px;line-height:1.8;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 26px;border-radius:12px;font-size:15.5px;font-weight:700;
  letter-spacing:.01em;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--gold);color:var(--ink);box-shadow:0 8px 22px rgba(242,193,78,.28);}
.btn-primary:hover{background:#FFD166;color:var(--ink);transform:translateY(-2px);box-shadow:0 12px 30px rgba(242,193,78,.34),0 0 0 3px rgba(23,217,196,.22);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34);}
.btn-ghost:hover{color:var(--teal);border-color:rgba(23,217,196,.7);box-shadow:0 0 0 3px rgba(23,217,196,.16);transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-2);color:#AEB9B6;position:relative;
  padding:64px 0 0;margin-top:96px;font-size:14.5px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0),rgba(23,217,196,.8),rgba(23,217,196,0));
}
.site-footer .row{padding:0 20px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.02rem;margin-bottom:14px;}
.footer-desc{color:#8E9B98;font-size:14px;line-height:1.8;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:#9FAAB0;font-size:14px;}
.footer-col ul li a:hover{color:var(--teal);}
.footer-col p{color:#8E9B98;font-size:14px;line-height:1.8;margin-bottom:10px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  color:#78857f;font-size:13px;
}

/* ---------- responsive ---------- */
@media screen and (max-width:1279px){
  .wrap,.hero-inner{padding:0 24px;}
}
@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .intro-strip{grid-template-columns:1fr 1fr;padding:28px 24px;}
  .steps{grid-template-columns:1fr 1fr;gap:28px;}
  .step:nth-child(2)::after{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:44px 32px;}
}
@media screen and (max-width:900px){
  .header-inner{height:64px;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;left:0;right:0;top:64px;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink);border-bottom:1px solid rgba(23,217,196,.22);
    padding:8px 20px 20px;box-shadow:0 24px 40px rgba(0,0,0,.4);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:14px 0;font-size:16px;line-height:48px;border-bottom:1px solid rgba(255,255,255,.06);}
  .main-nav a:last-child{border-bottom:none;}
  .main-nav a.active::after{left:0;right:auto;width:36px;bottom:8px;}
  .page-hero{padding:44px 0 48px;min-height:0;}
  .intro-strip{margin-top:-32px;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .intro-strip{grid-template-columns:1fr;gap:20px;margin-top:-28px;}
  .grid-cards{grid-template-columns:1fr;gap:24px;}
  .steps{grid-template-columns:1fr;gap:24px;}
  .step::after{display:none;}
  .step{border-left:2px solid rgba(23,217,196,.25);padding-left:18px;}
  .step-num{margin-bottom:12px;}
  .cta-band{padding:36px 24px;border-radius:16px;}
  .cta-actions{width:100%;}
  .btn{width:100%;}
  .site-footer{margin-top:64px;padding-top:48px;}
  .footer-desc{max-width:none;}
  .footer-bottom{margin-top:32px;}
  .hero-lead{font-size:16px;}
  .section-head{margin-bottom:32px;}
}
@media screen and (max-width:519px){
  .hero-title{font-size:1.85rem;line-height:1.28;}
  .hero-tags{gap:8px;}
  .tag{font-size:12.5px;padding:5px 12px;}
  .group-body{padding:20px 20px 22px;}
  .accordion-title{font-size:15.5px;padding:16px 48px 16px 18px;}
  .accordion-content{padding:0 18px 18px 18px;font-size:15px;}
  .breadcrumb{font-size:12.5px;}
}

/* roulang page: article */
:root{
  --teal:#17D9C4;
  --teal-deep:#0F8F81;
  --gold:#F2C14E;
  --ink:#0B1116;
  --ink-2:#0B1016;
  --bg:#F7F8F4;
  --card:#FFFFFF;
  --line:#DDE4DF;
  --text:#16201F;
  --muted:#5B6A66;
  --radius:16px;
  --radius-lg:20px;
  --shadow:0 10px 30px rgba(11,17,22,.08);
  --shadow-hover:0 16px 40px rgba(11,17,22,.14);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --num-font:"DIN Alternate","Roboto Mono","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--teal-deep);}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin-top:0;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(23,217,196,.35);border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1440px){.container{max-width:1240px;}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  border-bottom:0;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0) 0%,rgba(23,217,196,.7) 50%,rgba(23,217,196,0) 100%);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center;border-radius:11px;
  background:rgba(23,217,196,.12);border:1px solid rgba(23,217,196,.38);
  box-shadow:inset 0 0 12px rgba(23,217,196,.18);
}
.brand-text{font-weight:800;font-size:17px;line-height:1.2;color:#fff;white-space:nowrap;letter-spacing:.01em;}
.main-nav{display:flex;align-items:center;gap:2px;}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:72px;padding:0 18px;
  color:#B7C2BE;font-size:15px;font-weight:500;
}
.main-nav a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:16px;height:2px;border-radius:2px;
  background:transparent;transition:background .2s ease;
}
.main-nav a:hover{color:var(--teal);}
.main-nav a:hover::after{background:rgba(23,217,196,.35);}
.main-nav a.active{color:var(--teal);text-shadow:0 0 12px rgba(23,217,196,.45);}
.main-nav a.active::after{background:var(--teal);box-shadow:0 0 10px rgba(23,217,196,.85);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border-radius:11px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.18);color:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(23,217,196,.6);color:var(--teal);}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative;border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;background:#0B1116;border-top:1px solid rgba(23,217,196,.2);
  padding:10px 0 20px;box-shadow:0 24px 40px rgba(0,0,0,.4);
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 22px;
  color:#C9D4D0;font-size:16px;border-bottom:1px solid rgba(255,255,255,.05);
}
.mobile-drawer a.active{color:var(--teal);background:rgba(23,217,196,.08);}
.mobile-drawer .drawer-cta{padding:14px 22px 0;border-bottom:0;}
.mobile-drawer .drawer-cta .btn{width:100%;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:12px;border:1px solid transparent;
  font-weight:700;font-size:15px;line-height:1;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-gold{background:var(--gold);color:#0B1116;}
.btn-gold:hover{background:#FFD06A;color:#0B1116;transform:translateY(-2px);box-shadow:0 0 0 3px rgba(23,217,196,.22),0 12px 26px rgba(242,193,78,.26);}
.btn-primary{background:var(--teal);color:#062B27;}
.btn-primary:hover{background:#3EE6D3;color:#062B27;transform:translateY(-2px);box-shadow:0 12px 26px rgba(23,217,196,.3);}
.btn-outline{background:transparent;color:#E8EFEC;border-color:rgba(255,255,255,.28);}
.btn-outline:hover{color:var(--teal);border-color:rgba(23,217,196,.6);background:rgba(23,217,196,.08);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;color:#fff;
  background:var(--ink) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:36px 0 60px;min-height:300px;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 320px at 15% 0%,rgba(23,217,196,.16),transparent 70%),
    linear-gradient(180deg,rgba(11,17,22,.82) 0%,rgba(11,17,22,.92) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:14px;color:#8A9995;margin:0 0 24px;padding:0;
}
.breadcrumb a{color:#C9D4D0;}
.breadcrumb a:hover{color:var(--teal);}
.breadcrumb .sep{color:#4E5C58;}
.breadcrumb .current{color:var(--teal);}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.02em;line-height:1.4;
}
.pill-teal{background:rgba(23,217,196,.14);color:#5FF0DF;border:1px solid rgba(23,217,196,.42);}
.article-title{
  font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.24;font-weight:800;
  color:#fff;margin:16px 0 20px;max-width:880px;letter-spacing:.005em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;font-size:14px;color:#A9B7B2;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#4E5C58;display:inline-block;}
.article-meta .meta-strong{color:#DCE6E2;font-weight:600;}

/* ---------- Article body ---------- */
.article-body{padding:56px 0 72px;background:var(--bg);}
.article-row{align-items:flex-start;}
.prose-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(22px,3vw,44px);box-shadow:var(--shadow);
}
.prose{font-size:17px;line-height:1.85;color:var(--text);word-break:break-word;}
.prose > *:first-child{margin-top:0;}
.prose > *:last-child{margin-bottom:0;}
.prose p{margin:0 0 1.1em;}
.prose h2{
  font-size:clamp(1.35rem,2.1vw,1.7rem);line-height:1.38;font-weight:800;
  margin:1.9em 0 .75em;padding-left:16px;position:relative;color:var(--text);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:5px;border-radius:4px;
  background:linear-gradient(180deg,var(--teal),rgba(23,217,196,.35));
}
.prose h3{font-size:1.22rem;line-height:1.5;font-weight:800;margin:1.5em 0 .6em;color:var(--text);}
.prose h4{font-size:1.06rem;font-weight:700;margin:1.3em 0 .5em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em;}
.prose li{margin-bottom:.55em;}
.prose li::marker{color:var(--teal-deep);}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--teal);
  background:#F1F6F3;border-radius:0 12px 12px 0;color:#33403D;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose a{color:var(--teal-deep);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:#0B7A6E;}
.prose img{border-radius:12px;margin:1.4em 0;}
.prose figure{margin:1.4em 0;}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;display:block;overflow-x:auto;}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top;}
.prose th{background:#F1F6F3;font-weight:700;white-space:nowrap;}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.prose code{background:#F1F6F3;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.92em;}
.prose pre{background:#0F1917;color:#DCE6E2;border-radius:12px;padding:18px;overflow-x:auto;}

.empty-state{
  text-align:center;padding:56px 24px;background:var(--card);
  border:1px dashed var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);
}
.empty-state h2{font-size:1.5rem;margin:0 0 12px;font-weight:800;}
.empty-state p{color:var(--muted);margin:0 0 22px;font-size:15px;}

/* ---------- Sidebar ---------- */
.side-sticky{position:sticky;top:96px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);margin-bottom:24px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.side-card:hover{border-color:rgba(23,217,196,.4);}
.side-card h3{font-size:1.05rem;font-weight:800;margin:0 0 10px;color:var(--text);}
.side-card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0 0 16px;}
.side-card .side-note{font-size:13px;color:#7C8B87;margin:0;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:0;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:15px;color:var(--text);
}
.side-list a::after{content:"→";font-size:13px;color:#A9B7B2;transition:color .18s ease,transform .18s ease;}
.side-list a:hover{color:var(--teal-deep);}
.side-list a:hover::after{color:var(--teal);transform:translateX(3px);}

/* ---------- Section heads ---------- */
.section-head{max-width:720px;margin:0 0 32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.08em;color:var(--teal-deep);margin-bottom:12px;text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal);display:inline-block;}
.section-title{font-size:clamp(1.45rem,2.4vw,2rem);line-height:1.35;font-weight:800;margin:0 0 10px;color:var(--text);}
.section-sub{font-size:15px;line-height:1.8;color:var(--muted);margin:0;}

/* ---------- Related cards ---------- */
.related-section{padding:8px 0 88px;background:var(--bg);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(23,217,196,.5);box-shadow:var(--shadow-hover),0 0 0 1px rgba(23,217,196,.25);}
.card-media{aspect-ratio:16/9;overflow:hidden;background:#E9EEEA;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-tag{
  display:inline-flex;align-self:flex-start;padding:4px 11px;border-radius:999px;
  background:rgba(23,217,196,.12);border:1px solid rgba(23,217,196,.32);
  color:#0C7C70;font-size:12px;font-weight:700;line-height:1.6;
}
.card h3{font-size:18px;line-height:1.5;font-weight:800;margin:0;color:var(--text);}
.card p{
  font-size:14px;line-height:1.75;color:var(--muted);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:#8A9995;margin-top:auto;padding-top:8px;
  border-top:1px dashed var(--line);
}
.card-meta .go{color:var(--teal-deep);font-weight:700;}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;color:#fff;padding:72px 0;overflow:hidden;
  background:var(--ink-2) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 260px at 80% 20%,rgba(23,217,196,.18),transparent 70%),
    linear-gradient(180deg,rgba(11,16,22,.9),rgba(11,16,22,.94));
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(1.5rem,2.8vw,2.15rem);line-height:1.34;font-weight:800;margin:0 0 12px;color:#fff;}
.cta-inner p{color:#B7C2BE;font-size:15px;line-height:1.8;margin:0;max-width:600px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-text{flex:1 1 480px;min-width:0;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;background:var(--ink-2);color:#A9B7B2;
  padding:64px 0 0;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0),rgba(23,217,196,.75),rgba(23,217,196,0));
}
.site-footer .row{max-width:1240px;padding-left:5px;padding-right:5px;}
.site-footer .columns{padding-left:15px;padding-right:15px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-text{color:#fff;font-weight:800;font-size:17px;}
.footer-desc{font-size:14px;line-height:1.85;color:#8A9995;margin:0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin:0 0 16px;letter-spacing:.01em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#A9B7B2;font-size:14px;}
.footer-col a:hover{color:var(--teal);}
.footer-col p{font-size:14px;line-height:1.85;color:#8A9995;margin:0 0 10px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding:22px 0;
  font-size:13px;color:#78857F;
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .site-header .main-nav{display:none;}
  .site-header .nav-toggle{display:inline-flex;}
  .site-header .header-actions .btn-sm{display:none;}
  .header-inner{height:64px;}
  .brand-text{font-size:16px;}
  .article-hero{padding:28px 0 48px;min-height:0;}
  .article-body{padding:36px 0 56px;}
  .side-sticky{position:static;}
  .related-section{padding:0 0 64px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{padding:56px 0;}
  .site-footer{padding-top:52px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .article-title{font-size:clamp(1.55rem,6vw,2rem);margin:14px 0 16px;}
  .article-meta{font-size:13px;gap:6px 14px;}
  .prose{font-size:16px;line-height:1.85;}
  .prose-card{padding:20px 16px;border-radius:16px;}
  .related-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
  .cta-inner{gap:24px;}
  .cta-text{flex:1 1 100%;}
  .site-footer .columns{margin-bottom:28px;}
  .site-footer .columns:last-child{margin-bottom:0;}
  .footer-bottom{font-size:12px;line-height:1.7;}
  .breadcrumb{font-size:13px;margin-bottom:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink:#0B1116;
  --ink-2:#0B1016;
  --cyan:#17D9C4;
  --cyan-deep:#0FBBA9;
  --cyan-text:#0E8E80;
  --cyan-soft:rgba(23,217,196,.12);
  --gold:#F2C14E;
  --paper:#F7F8F4;
  --card:#FFFFFF;
  --line:#DDE4DF;
  --text:#16201F;
  --muted:#5B6A66;
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow:0 10px 30px rgba(11,17,22,.08);
  --shadow-hover:0 16px 40px rgba(11,17,22,.14),0 0 0 1px rgba(23,217,196,.25);
  --focus:0 0 0 3px rgba(23,217,196,.35);
  --maxw:1200px;
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"DIN Alternate","Roboto Mono","SFMono-Regular",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--cyan-text);text-decoration:none;transition:color .18s ease,background-color .18s ease;}
a:hover,a:focus{color:var(--ink);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font);
  color:var(--text);
  font-weight:800;
  letter-spacing:0;
  margin:0 0 .6em;
  line-height:1.3;
}
h2{font-size:clamp(1.65rem,2.6vw,2.25rem);line-height:1.3;}
h3{font-size:1.3rem;line-height:1.45;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:.4em;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.row{max-width:none;margin-left:-12px;margin-right:-12px;}
.row::after{content:"";display:table;clear:both;}
.columns,.column{padding-left:12px;padding-right:12px;}
.row.flex-row{display:flex;flex-wrap:wrap;align-items:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  font-family:inherit;text-align:center;
}
.btn:focus-visible{outline:none;box-shadow:var(--focus);}
.btn-gold{background:var(--gold);color:#0B1116;box-shadow:0 8px 22px rgba(242,193,78,.22);}
.btn-gold:hover,.btn-gold:focus{background:#FFD06A;color:#0B1116;transform:translateY(-1px);box-shadow:0 10px 28px rgba(242,193,78,.32),0 0 0 3px rgba(23,217,196,.22);}
.btn-primary{background:var(--cyan);color:#062521;box-shadow:0 8px 22px rgba(23,217,196,.24);}
.btn-primary:hover,.btn-primary:focus{background:#39E7D5;color:#062521;transform:translateY(-1px);box-shadow:0 12px 26px rgba(23,217,196,.34);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3);}
.btn-ghost:hover,.btn-ghost:focus{border-color:var(--cyan);color:var(--cyan);background:rgba(23,217,196,.08);}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-outline:hover,.btn-outline:focus{border-color:rgba(23,217,196,.7);color:var(--ink);background:rgba(23,217,196,.08);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.02em;line-height:1;
}
.badge-cyan{background:rgba(23,217,196,.14);color:var(--cyan-text);border:1px solid rgba(23,217,196,.38);}
.badge-gold{background:rgba(242,193,78,.16);color:#8A6412;border:1px solid rgba(242,193,78,.45);}
.badge-dark{background:rgba(23,217,196,.16);color:var(--cyan);border:1px solid rgba(23,217,196,.42);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink);}
.site-header::after{
  content:"";display:block;height:1px;
  background:linear-gradient(90deg,rgba(23,217,196,0),rgba(23,217,196,.85),rgba(23,217,196,0));
}
.header-inner{
  width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#FFFFFF;font-size:17px;font-weight:800;letter-spacing:.01em;
  white-space:nowrap;flex-shrink:0;
}
.brand:hover,.brand:focus{color:var(--cyan);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:rgba(23,217,196,.14);border:1px solid rgba(23,217,196,.38);
  box-shadow:0 0 18px rgba(23,217,196,.18) inset;
}
.brand-text{display:inline-block;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:10px;
  color:#C7D0CC;font-size:15px;font-weight:600;
  transition:color .18s ease,background-color .18s ease;
}
.main-nav a:hover,.main-nav a:focus{color:var(--cyan);background:rgba(255,255,255,.05);}
.main-nav a.active{color:var(--cyan);text-shadow:0 0 12px rgba(23,217,196,.45);}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--cyan);box-shadow:0 0 10px rgba(23,217,196,.85);
}
.nav-cta{display:none;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:18px;flex-shrink:0;}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;border-radius:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#E4ECE8;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:rgba(23,217,196,.6);background:rgba(23,217,196,.12);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 页头横幅 ---------- */
.page-banner{
  position:relative;color:#fff;overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(11,17,22,.94) 0%,rgba(11,17,22,.82) 52%,rgba(11,17,22,.62) 100%);
}
.page-banner::after{
  content:"";position:absolute;right:-80px;top:-60px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,217,196,.22) 0%,rgba(23,217,196,0) 68%);pointer-events:none;
}
.banner-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:56px 20px 60px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:rgba(255,255,255,.66);margin:0 0 20px;padding:0;list-style:none;
}
.breadcrumb li{margin:0;display:inline-flex;align-items:center;gap:8px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover,.breadcrumb a:focus{color:var(--cyan);}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.breadcrumb .current{color:var(--cyan);font-weight:600;}
.banner-inner h1{
  font-size:clamp(2.25rem,4.2vw,3.2rem);
  line-height:1.2;color:#fff;margin:14px 0 18px;max-width:860px;font-weight:800;
}
.banner-lead{max-width:760px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);margin:0;}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.banner-tags span{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:#DCE7E2;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
}

/* ---------- 板块 ---------- */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:#FFFFFF;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;line-height:1.85;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--cyan-text);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--cyan);}

/* ---------- 左侧导读 ---------- */
.sticky-toc{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);
}
.sticky-toc h2{font-size:1.35rem;line-height:1.45;margin:14px 0 12px;}
.toc-desc{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 18px;}
.toc-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.toc-list li{margin:0;border-bottom:1px solid var(--line);}
.toc-list li:last-child{border-bottom:0;}
.toc-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:13px 2px;font-size:15px;font-weight:600;color:var(--text);
  transition:color .18s ease,padding-left .18s ease;
}
.toc-list a::after{content:"→";color:var(--cyan-deep);font-size:14px;opacity:.6;transition:opacity .18s ease,transform .18s ease;}
.toc-list a:hover,.toc-list a:focus{color:var(--cyan-text);padding-left:6px;}
.toc-list a:hover::after{opacity:1;transform:translateX(2px);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:36px;}
.timeline::before{
  content:"";position:absolute;left:15px;top:10px;bottom:10px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(23,217,196,.95) 0%,rgba(23,217,196,.45) 55%,rgba(23,217,196,.08) 100%);
}
.tl-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 28px;margin-bottom:20px;
  box-shadow:var(--shadow);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-item:last-child{margin-bottom:0;}
.tl-item:hover{transform:translateY(-2px);border-color:rgba(23,217,196,.5);box-shadow:var(--shadow-hover);}
.tl-num{
  position:absolute;left:-36px;top:26px;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;background:var(--ink);color:var(--cyan);
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.02em;
  border:1px solid rgba(23,217,196,.55);box-shadow:0 0 16px rgba(23,217,196,.28);
}
.tl-item h3{font-size:1.2rem;margin:0 0 10px;}
.tl-item p{font-size:15.5px;line-height:1.85;color:var(--muted);margin:0;}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tl-meta span{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--cyan-text);
  background:rgba(23,217,196,.1);border:1px solid rgba(23,217,196,.26);
}

/* ---------- 图文交替 ---------- */
.split-block{display:flex;flex-wrap:wrap;align-items:center;gap:48px;margin-bottom:72px;}
.split-block:last-child{margin-bottom:0;}
.split-media{flex:1 1 52%;min-width:280px;}
.split-media img{
  width:100%;border-radius:var(--radius);border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:16/10;object-fit:cover;
}
.split-copy{flex:1 1 42%;min-width:280px;}
.split-copy h2{font-size:clamp(1.5rem,2.4vw,2rem);margin-bottom:16px;}
.split-copy p{font-size:16px;line-height:1.85;color:var(--muted);}
.split-block.reverse .split-media{order:2;}
.split-block.reverse .split-copy{order:1;}
.check-list{list-style:none;padding:0;margin:20px 0 0;}
.check-list li{
  position:relative;padding-left:28px;margin-bottom:12px;
  font-size:15.5px;color:var(--text);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--cyan-deep);border-bottom:2px solid var(--cyan-deep);
  transform:rotate(-45deg);border-radius:1px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:22px;
  font-size:15px;font-weight:700;color:var(--cyan-text);
  border-bottom:1px solid rgba(23,217,196,.4);padding-bottom:2px;
}
.text-link:hover,.text-link:focus{color:var(--ink);border-bottom-color:var(--ink);}

/* ---------- 数据条 ---------- */
.stats-band{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
.stats-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,217,196,.75),transparent);
}
.stat{padding:26px 0;text-align:center;}
.stat-num{
  display:block;font-family:var(--mono);font-size:clamp(2rem,3.4vw,2.75rem);
  font-weight:700;line-height:1.1;color:var(--cyan);letter-spacing:.02em;
}
.stat-label{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.6;}
.stat-sep{border-right:1px solid rgba(255,255,255,.1);}
@media (max-width:640px){
  .stat-sep{border-right:0;border-bottom:1px solid rgba(255,255,255,.1);}
}

/* ---------- FAQ ---------- */
.faq-wrap{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-start;}
.faq-intro{flex:1 1 34%;min-width:260px;}
.faq-intro h2{margin-bottom:14px;}
.faq-intro p{color:var(--muted);font-size:16px;line-height:1.85;}
.faq-intro .btn{margin-top:20px;}
.faq-col{flex:1 1 58%;min-width:280px;}
.faq-accordion{
  margin:0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--card);box-shadow:var(--shadow);
}
.faq-accordion .accordion-item{
  background:transparent;border:0;border-left:3px solid transparent;
  border-bottom:1px solid var(--line);
  transition:border-color .2s ease,background-color .2s ease;
}
.faq-accordion .accordion-item:last-child{border-bottom:0;}
.faq-accordion .accordion-item.is-active{border-left-color:var(--cyan);background:rgba(23,217,196,.035);}
.faq-accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;margin:0;background:transparent;border:0;
  font-size:16.5px;font-weight:700;color:var(--text);line-height:1.6;
  transition:background-color .18s ease,color .18s ease;
}
.faq-accordion .accordion-title:hover{background:rgba(23,217,196,.08);color:var(--ink);}
.faq-accordion .accordion-title:focus-visible{box-shadow:inset var(--focus);}
.faq-accordion .accordion-title::before{
  content:"＋";float:none;position:static;order:2;margin:0;
  font-size:18px;font-weight:700;line-height:1;color:var(--cyan-deep);
  transition:transform .2s ease,color .2s ease;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"－";color:var(--cyan-text);}
.faq-accordion .accordion-content{
  padding:0 24px 22px;border:0;background:transparent;
  color:var(--muted);font-size:15.5px;line-height:1.8;
}
.faq-accordion .accordion-content p{margin:0;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,217,196,.7),transparent);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,193,78,.16) 0%,rgba(242,193,78,0) 68%);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;padding:76px 0;display:flex;flex-wrap:wrap;align-items:center;gap:36px;}
.cta-copy{flex:1 1 56%;min-width:280px;}
.cta-copy h2{color:#fff;margin-bottom:14px;}
.cta-copy p{color:rgba(255,255,255,.76);font-size:16.5px;line-height:1.85;margin:0;max-width:640px;}
.cta-actions{flex:0 1 auto;display:flex;flex-wrap:wrap;gap:14px;}
.cta-note{margin-top:20px;font-size:13.5px;color:rgba(255,255,255,.5);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-2);color:#A8B4AF;padding:64px 0 28px;position:relative;}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,217,196,.8),transparent);
}
.site-footer .row{max-width:var(--maxw);margin-left:auto;margin-right:auto;padding:0 8px;}
.site-footer .row::after{content:"";display:table;clear:both;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff;font-size:17px;font-weight:800;}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:9px;}
.footer-desc{font-size:14.5px;line-height:1.85;color:#8E9C97;margin:0;max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin:0 0 16px;letter-spacing:.01em;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#9EACA7;font-size:14.5px;transition:color .18s ease;}
.footer-col a:hover,.footer-col a:focus{color:var(--cyan);}
.footer-col p{font-size:14.5px;line-height:1.85;color:#8E9C97;margin:0 0 10px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#6F7D78;
}

/* ---------- 响应式 ---------- */
@media (max-width:900px){
  .header-inner{height:64px;gap:12px;}
  .main-nav{
    display:none;position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:10px 16px 22px;background:var(--ink);
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 18px 34px rgba(0,0,0,.4);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{
    height:48px;padding:0 10px;border-radius:8px;font-size:16px;
    justify-content:flex-start;
  }
  .main-nav a.active::after{left:10px;right:auto;width:26px;bottom:8px;}
  .main-nav .nav-cta{
    display:flex;justify-content:center;height:48px;margin-top:14px;
    background:var(--gold);color:#0B1116;font-weight:700;border-radius:12px;
  }
  .main-nav .nav-cta:hover,.main-nav .nav-cta:focus{background:#FFD06A;color:#0B1116;}
  .header-actions{margin-left:auto;}
  .nav-toggle{display:flex;}
  .banner-inner{padding:44px 20px 48px;}
  .sticky-toc{position:static;}
  .section{padding:64px 0;}
  .section-sm{padding:48px 0;}
  .split-block{gap:28px;margin-bottom:56px;}
  .split-block.reverse .split-media{order:0;}
  .split-block.reverse .split-copy{order:0;}
  .cta-inner{padding:56px 0;}
}
@media (max-width:640px){
  body{font-size:16px;}
  .banner-inner h1{font-size:2rem;line-height:1.25;}
  .banner-lead{font-size:15.5px;}
  .header-actions .btn-gold{display:none;}
  .sticky-toc{padding:22px 20px;}
  .tl-item{padding:20px 20px;}
  .tl-item h3{font-size:1.1rem;}
  .faq-accordion .accordion-title{padding:16px 18px;font-size:15.5px;}
  .faq-accordion .accordion-content{padding:0 18px 18px;}
  .footer-bottom{flex-direction:column;}
  .site-footer{padding:48px 0 24px;}
}
@media (max-width:520px){
  .banner-inner h1{font-size:1.85rem;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
  .header-actions .btn-sm{min-height:38px;padding:0 12px;font-size:13px;}
}