/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --bg:#F5F4FB;
  --surface:#FFFFFF;
  --border:#E5E3F2;
  --text:#14122B;
  --text-body:#2C2A4A;
  --text-muted:#5C5A78;
  --text-faint:#9C9AB5;
  --success:#12B76A;
  --warn:#F79009;
  --danger:#F04438;
  --r-sm:12px;
  --r-card:16px;
  --r-lg:20px;
  --r-xl:24px;
  --shadow-sm:0 1px 2px rgba(20,18,43,.06);
  --shadow-md:0 10px 28px rgba(20,18,43,.08);
  --shadow-lg:0 24px 60px rgba(20,18,43,.12);
  --maxw:1200px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.85;color:var(--text-body);background:var(--bg);
  padding-bottom:0;overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand-700);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.25;font-weight:700;}
h1{font-size:clamp(30px,4vw,54px);font-weight:800;line-height:1.15;letter-spacing:-.5px;}
h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.25;}
h3{font-size:20px;font-weight:600;line-height:1.35;}
p{margin:0 0 18px;max-width:44em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:8px;}
::selection{background:var(--brand-100);color:var(--ink-900);}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.section{padding:var(--sec) 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:16px;}
.section-head p{color:var(--text-muted);margin-bottom:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:16px;
  font-size:13px;font-weight:600;letter-spacing:.6px;color:var(--brand-600);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-600);border-radius:2px;display:inline-block;}
.eyebrow--light{color:#B9AEFF;}
.eyebrow--light::before{background:#B9AEFF;}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:16px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-outline{background:transparent;border-color:var(--brand-600);color:var(--brand-600);}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-accent:hover{background:#E85826;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:#F1EEFF;color:var(--ink-900);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ===================== 徽章 / 标签 ===================== */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.2px;
}
.badge--mint{background:rgba(20,214,180,.14);color:#0E9E86;}
.badge--accent{background:rgba(255,107,61,.14);color:#D9501F;}
.badge--dark{background:rgba(255,255,255,.12);color:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.18);}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;padding:16px 0;
  transition:background-color .18s ease,padding .18s ease,box-shadow .18s ease;
}
.site-header.is-stuck{background:#fff;padding:8px 0;box-shadow:0 1px 0 var(--border),0 8px 24px rgba(20,18,43,.06);}
.nav-inner{display:flex;align-items:center;gap:32px;}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:#fff;letter-spacing:.2px;flex:0 0 auto;}
.site-header.is-stuck .brand{color:var(--ink-900);}
.brand:hover{color:#fff;}
.site-header.is-stuck .brand:hover{color:var(--brand-600);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 32px;
  background:linear-gradient(135deg,var(--brand-600),var(--mint-400));
  display:grid;place-items:center;color:#fff;font-size:14px;font-weight:800;letter-spacing:-.5px;
}
.nav-menu{display:flex;align-items:center;gap:28px;margin:0 auto;}
.nav-link{font-size:15px;font-weight:500;color:rgba(255,255,255,.82);position:relative;padding:6px 0;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:transparent;transition:background-color .18s ease;}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{background:rgba(255,255,255,.5);}
.nav-link.is-active{color:#fff;font-weight:600;}
.nav-link.is-active::after{background:var(--brand-600);}
.site-header.is-stuck .nav-link{color:var(--text-muted);}
.site-header.is-stuck .nav-link:hover{color:var(--brand-600);}
.site-header.is-stuck .nav-link:hover::after{background:var(--brand-100);}
.site-header.is-stuck .nav-link.is-active{color:var(--brand-600);}
.site-header.is-stuck .nav-link.is-active::after{background:var(--brand-600);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.28);
  background:transparent;color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14);}
.site-header.is-stuck .icon-btn{border-color:var(--border);color:var(--text-body);}
.site-header.is-stuck .icon-btn:hover{background:var(--brand-100);color:var(--brand-600);border-color:var(--brand-100);}
.nav-toggle{display:none;}
.hamburger{width:22px;height:16px;position:relative;}
.hamburger span{position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;transition:transform .18s ease,opacity .18s ease;}
.hamburger span:nth-child(1){top:0;}
.hamburger span:nth-child(2){top:7px;}
.hamburger span:nth-child(3){top:14px;}
.nav-toggle.is-open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open .hamburger span:nth-child(2){opacity:0;}
.nav-toggle.is-open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:79;
  background:#fff;box-shadow:var(--shadow-lg);padding:96px 24px 32px;
  transform:translateX(102%);transition:transform .22s ease;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer a{display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--text-body);border-bottom:1px solid var(--border);}
.drawer a:hover{color:var(--brand-600);}
.drawer-mask{position:fixed;inset:0;background:rgba(20,18,43,.42);z-index:78;opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ===================== Hero ===================== */
.hero{
  position:relative;color:#fff;overflow:hidden;
  padding:150px 0 118px;
  background:
    linear-gradient(135deg,rgba(20,18,43,.96) 0%,rgba(36,28,78,.90) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 42px),0 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:20px 20px;opacity:.42;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:10px;height:32px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.9);font-size:13px;font-weight:500;margin-bottom:24px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--mint-400);display:inline-block;box-shadow:0 0 0 4px rgba(20,214,180,.22);}
.hero h1{color:#fff;margin-bottom:20px;}
.hero h1 em{font-style:normal;color:var(--mint-400);}
.hero-sub{font-size:18px;line-height:1.75;color:rgba(255,255,255,.75);max-width:34em;margin-bottom:32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px;}
.stat-num{font-size:30px;font-weight:800;line-height:1.1;color:var(--mint-400);letter-spacing:-.5px;font-family:"SF Pro Display",system-ui,-apple-system,"Segoe UI",sans-serif;}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:rgba(255,255,255,.72);margin-left:4px;}
.stat-label{font-size:13px;color:rgba(255,255,255,.62);margin-top:6px;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);border:1px solid rgba(255,255,255,.16);clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 40px));}
.hero-visual::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);
  background:linear-gradient(160deg,rgba(90,60,224,.34),rgba(20,18,43,.62));
  clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 40px));pointer-events:none;
}
.hero-visual-tag{
  position:absolute;left:-14px;bottom:34px;z-index:3;
  background:#fff;color:var(--ink-900);border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
}
.hero-visual-tag i{width:8px;height:8px;border-radius:50%;background:var(--accent-500);display:inline-block;}

/* ===================== 信任带 ===================== */
.trust{background:var(--bg);padding:26px 0;border-bottom:1px solid var(--border);}
.trust-inner{display:flex;align-items:center;gap:28px;flex-wrap:wrap;min-height:60px;}
.trust-label{font-size:13px;color:var(--text-faint);font-weight:600;letter-spacing:.4px;flex:0 0 auto;}
.trust-list{display:flex;flex-wrap:wrap;gap:10px 28px;}
.trust-list li{font-size:14px;color:var(--text-muted);position:relative;padding-left:16px;}
.trust-list li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:2px;background:var(--brand-100);border:1px solid var(--brand-600);}

/* ===================== 能力介绍（左右交替） ===================== */
.cap-list{display:flex;flex-direction:column;gap:72px;}
.cap-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.cap-row:nth-child(even) .cap-media{order:2;}
.cap-media{position:relative;}
.cap-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--shadow-md);}
.cap-index{
  position:absolute;top:-14px;left:-14px;width:52px;height:52px;border-radius:14px;z-index:2;
  background:var(--brand-600);color:#fff;display:grid;place-items:center;
  font-size:19px;font-weight:800;box-shadow:var(--shadow-md);
  font-family:"SF Pro Display",system-ui,-apple-system,sans-serif;
}
.cap-body h3{margin-bottom:14px;font-size:24px;}
.cap-body p{color:var(--text-muted);margin-bottom:20px;}
.cap-points{margin-bottom:24px;display:flex;flex-direction:column;gap:10px;}
.cap-points li{display:flex;gap:10px;font-size:15px;color:var(--text-body);}
.cap-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint-400);flex:0 0 6px;margin-top:11px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
.link-arrow span{transition:transform .18s ease;display:inline-block;}
.link-arrow:hover span{transform:translateX(4px);}

/* ===================== 成果预览 ===================== */
.res-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.res-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.res-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D4F2;color:inherit;}
.res-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.res-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.res-card:hover .res-thumb img{transform:scale(1.03);}
.res-corner{position:absolute;top:12px;left:12px;z-index:2;}
.res-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.res-body h3{font-size:18px;margin-bottom:10px;color:var(--text);transition:color .18s ease;}
.res-card:hover .res-body h3{color:var(--brand-600);}
.res-body p{font-size:14px;color:var(--text-muted);margin-bottom:18px;line-height:1.7;}
.res-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-faint);border-top:1px solid var(--border);padding-top:14px;}
.res-foot b{color:var(--brand-600);font-weight:700;}

/* ===================== 流程时间轴 ===================== */
.process-sec{background:var(--surface);}
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.timeline::before{
  content:"";position:absolute;top:19px;left:19px;right:19px;height:2px;
  background:linear-gradient(90deg,var(--brand-600) 0%,var(--brand-600) 62%,var(--border) 62%,var(--border) 100%);
}
.tl-step{position:relative;padding-top:64px;}
.tl-dot{
  position:absolute;top:0;left:0;width:40px;height:40px;border-radius:50%;z-index:2;
  background:#fff;border:2px solid var(--brand-600);color:var(--brand-600);
  display:grid;place-items:center;font-size:15px;font-weight:700;
  font-family:"SF Pro Display",system-ui,-apple-system,sans-serif;
}
.tl-step.is-current .tl-dot{border-color:var(--accent-500);color:var(--accent-500);box-shadow:0 0 0 8px rgba(255,107,61,.14);}
.tl-step h3{font-size:18px;margin-bottom:10px;}
.tl-step p{font-size:14px;color:var(--text-muted);line-height:1.75;margin-bottom:10px;}
.tl-note{font-size:13px;color:var(--brand-600);font-weight:600;}

/* ===================== 最新信息（CMS） ===================== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.news-head .section-head{margin-bottom:0;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;color:inherit;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D4F2;color:inherit;}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;gap:10px;}
.news-body h3{font-size:18px;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease;}
.news-card:hover .news-body h3{color:var(--brand-600);}
.news-body p{font-size:14px;color:var(--text-muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:0;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-faint);border-top:1px solid var(--border);padding-top:14px;}
.news-meta time{font-family:"SF Pro Display",system-ui,-apple-system,sans-serif;}
.news-empty{
  grid-column:1/-1;border:1px dashed #CFC9EC;border-radius:var(--r-card);background:#FAF9FF;
  padding:48px 24px;text-align:center;
}
.news-empty strong{display:block;font-size:17px;color:var(--text);margin-bottom:8px;}
.news-empty span{font-size:14px;color:var(--text-muted);}

/* ===================== FAQ ===================== */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.faq-list{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;cursor:pointer;font-size:17px;font-weight:600;color:var(--text);list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;transition:transform .22s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;}
.faq-icon::before{top:8px;left:0;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 24px 20px;font-size:15px;color:var(--text-muted);line-height:1.8;}
.faq-body p{max-width:none;margin:0;}

/* ===================== 表单 ===================== */
.contact-sec{background:var(--surface);}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start;}
.contact-info h2{margin-bottom:16px;}
.contact-info p{color:var(--text-muted);}
.contact-points{margin-top:28px;display:flex;flex-direction:column;gap:16px;}
.contact-points li{display:flex;gap:14px;align-items:flex-start;font-size:15px;color:var(--text-body);}
.contact-points i{
  width:34px;height:34px;border-radius:10px;flex:0 0 34px;display:grid;place-items:center;
  background:var(--brand-100);color:var(--brand-600);font-style:normal;font-weight:700;font-size:14px;
}
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow-md);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#FCFCFF;color:var(--text-body);
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);background:#fff;
  box-shadow:0 0 0 3px rgba(90,60,224,.12);
}
.field .hint{font-size:13px;color:var(--text-faint);margin-top:8px;}
.form-privacy{font-size:13px;color:var(--text-faint);margin-top:16px;line-height:1.7;}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* ===================== 底部 CTA ===================== */
.cta-sec{padding:0 0 var(--sec);}
.cta-box{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--ink-900) 0%,var(--ink-800) 100%);
  border-radius:var(--r-xl);
  clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 36px));
  padding:64px 56px 76px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
}
.cta-box::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:20px 20px;opacity:.4;
}
.cta-box > *{position:relative;z-index:2;}
.cta-box h2{color:#fff;margin-bottom:14px;}
.cta-box p{color:rgba(255,255,255,.72);max-width:32em;margin-bottom:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:800;margin-bottom:18px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--brand-600),var(--mint-400));}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:32em;}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:.3px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;}
.footer-contact a{color:var(--mint-400);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.5);}
.footer-bottom a:hover{color:#fff;}

/* ===================== 移动端底部 Tab ===================== */
.mobile-tab{display:none;}

/* ===================== 响应式 ===================== */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .nav-menu{display:none;}
  .nav-toggle{display:grid;}
  .hero{padding:136px 0 104px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{max-width:560px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px 20px;}
  .cap-row{grid-template-columns:1fr;gap:28px;}
  .cap-row:nth-child(even) .cap-media{order:0;}
  .res-grid{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .timeline{grid-template-columns:repeat(2,1fr);gap:36px 24px;}
  .timeline::before{display:none;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .cta-box{grid-template-columns:1fr;gap:28px;padding:48px 36px 64px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .container{padding:0 16px;}
  body{padding-bottom:72px;}
  .nav-actions .btn{display:none;}
  .hero{padding:120px 0 92px;clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),0 100%);}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-visual-tag{left:8px;bottom:16px;}
  .stat-num{font-size:24px;}
  .trust-inner{gap:14px;}
  .trust-list{gap:8px 18px;}
  .res-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .news-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .timeline{grid-template-columns:1fr;gap:32px;}
  .tl-step{padding-top:0;padding-left:60px;}
  .tl-dot{top:2px;}
  .faq-item summary{padding:18px;font-size:16px;}
  .faq-body{padding:0 18px 18px;}
  .form-card{padding:22px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .cta-box{padding:40px 22px 56px;clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 24px));}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-tab{
    display:grid;grid-template-columns:repeat(5,1fr);
    position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:#fff;border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom,0px);
    box-shadow:0 -6px 20px rgba(20,18,43,.06);
  }
  .tab-item{
    position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;
    padding:9px 0 8px;font-size:11px;color:var(--text-faint);line-height:1.2;
  }
  .tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .tab-item.is-active{color:var(--brand-600);}
  .tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:22px;height:2px;border-radius:2px;background:var(--brand-600);}
  .tab-item:hover{color:var(--brand-600);}
}
@media (max-width:519px){
  h1{font-size:29px;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .btn{width:100%;}
  .hero-actions{gap:12px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{padding-bottom:36px;}
}

/* roulang page: article */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --page:#F5F4FB;
  --card:#FFFFFF;
  --line:#E5E3F2;
  --t-title:#14122B;
  --t-body:#2C2A4A;
  --t-sub:#5C5A78;
  --t-mute:#9C9AB5;
  --ok:#12B76A;
  --warn:#F79009;
  --err:#F04438;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --sd-sm:0 1px 2px rgba(20,18,43,.06);
  --sd-md:0 10px 28px rgba(20,18,43,.08);
  --sd-lg:0 24px 60px rgba(20,18,43,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--t-body);background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--t-title);font-weight:700}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .18s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sd-sm)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--t-title);white-space:nowrap;letter-spacing:.2px}
.brand:hover{color:var(--t-title)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--brand-600);color:#fff;font-size:13px;font-weight:800;letter-spacing:.4px;flex:none}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--t-sub);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.nav-link:hover{color:var(--brand-600)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--t-sub);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .18s var(--ease)}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-600);background:var(--brand-100)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;cursor:pointer;transition:transform .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);text-align:center}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important;box-shadow:none!important}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sd-md)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--brand-600);color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px)}
.btn-accent{background:var(--accent-500);color:#fff}
.btn-accent:hover{background:#F25A2A;color:#fff;transform:translateY(-2px);box-shadow:var(--sd-md)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{background:#F1EFFB;color:var(--ink-900);transform:translateY(-2px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.7)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.hamburger{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center;color:var(--t-title)}
.hamburger:hover{background:var(--brand-100);border-color:var(--brand-600);color:var(--brand-600)}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:120;display:none}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(20,18,43,.5)}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,84vw);background:#fff;padding:22px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--sd-lg);overflow-y:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-title{font-size:16px;font-weight:800;color:var(--t-title)}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--t-sub);display:inline-flex;align-items:center;justify-content:center}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 12px;border-radius:var(--r-btn);font-size:15px;font-weight:600;color:var(--t-body);border-bottom:1px solid var(--line)}
.drawer-link.is-active{color:var(--brand-600);background:var(--brand-100)}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-600)}
.drawer-cta{margin-top:18px}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line);padding:36px 0 44px}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.08;pointer-events:none}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.86),rgba(255,255,255,.97));pointer-events:none}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-mute);margin-bottom:20px;min-width:0;overflow:hidden}
.breadcrumb a{color:var(--brand-600);flex:none}
.breadcrumb a:hover{color:var(--brand-700);text-decoration:underline}
.breadcrumb .sep{color:var(--t-mute);flex:none}
.breadcrumb .crumb-current{color:var(--t-mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-600);font-size:12.5px;font-weight:600;white-space:nowrap}
.badge-accent{background:rgba(255,107,61,.12);color:#D9491C}
.badge-mint{background:rgba(20,214,180,.14);color:#0E9E86}
.article-title{font-size:clamp(26px,3.4vw,42px);line-height:1.28;font-weight:800;color:var(--t-title);margin:16px 0 22px;letter-spacing:-.2px;max-width:22em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:14px;color:var(--t-sub);padding-top:18px;border-top:1px solid var(--line)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px;color:var(--t-mute);flex:none}

/* ---------- 正文布局 ---------- */
.article-section{padding:56px 0 0}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:48px;align-items:start}
.article-main{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:48px 52px 44px;box-shadow:var(--sd-sm);min-width:0}
.article-body{font-size:16.5px;line-height:1.9;color:var(--t-body);max-width:800px}
.article-body p{margin:0 0 20px;max-width:46em}
.article-body h2{position:relative;margin:40px 0 16px;padding-left:16px;font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.35;color:var(--t-title)}
.article-body h2:first-child{margin-top:0}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--brand-600)}
.article-body h3{margin:32px 0 14px;font-size:20px;font-weight:600;line-height:1.4;color:var(--t-title)}
.article-body h4{margin:24px 0 12px;font-size:17px;font-weight:600;color:var(--t-title)}
.article-body ul,.article-body ol{list-style:none;margin:0 0 20px;padding:0}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px;max-width:44em}
.article-body ul>li::before{content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand-600)}
.article-body ol{counter-reset:artc}
.article-body ol>li{counter-increment:artc;padding-left:32px}
.article-body ol>li::before{content:counter(artc);position:absolute;left:0;top:.42em;width:20px;height:20px;border-radius:6px;background:var(--brand-100);color:var(--brand-600);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}
.article-body blockquote{margin:24px 0;padding:18px 22px;background:var(--brand-100);border-left:4px solid var(--brand-600);border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--t-body);font-style:normal}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto;box-shadow:var(--sd-sm)}
.article-body figure{margin:26px 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13.5px;color:var(--t-mute)}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(90,60,224,.3)}
.article-body a:hover{color:var(--brand-700);border-bottom-color:var(--brand-700)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;display:block;overflow-x:auto;border-radius:12px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body thead th{background:var(--brand-100);color:var(--t-title);font-weight:600;white-space:nowrap}
.article-body tbody tr:nth-child(even){background:#FAF9FE}
.article-body code{background:#F1EFFB;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-700)}
.article-body pre{background:var(--ink-900);color:#EDEBFF;border-radius:12px;padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0}
.article-body pre code{background:none;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--line)}
.article-tags .tag-label{font-size:14px;color:var(--t-mute);margin-right:2px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:#F1EFFB;color:var(--t-sub);font-size:13px;transition:all .18s var(--ease)}
.tag:hover{background:var(--brand-100);color:var(--brand-600)}

/* 空状态 */
.empty-state{border:1px dashed #D7D3EE;background:#FAF9FE;border-radius:var(--r-card);padding:56px 28px;text-align:center}
.empty-state svg{width:44px;height:44px;color:var(--brand-600);margin:0 auto 16px}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{font-size:14.5px;color:var(--t-sub);max-width:34em;margin:0 auto 22px}

/* ---------- 侧栏 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;min-width:0}
.aside-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 22px 18px;box-shadow:var(--sd-sm)}
.aside-card h3{font-size:16px;font-weight:700;color:var(--t-title);margin:0 0 6px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.aside-list{list-style:none;margin:0;padding:0}
.aside-list li+li{border-top:1px dashed var(--line)}
.aside-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 0;font-size:14.5px;color:var(--t-body);font-weight:500}
.aside-list a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.aside-list a svg{width:14px;height:14px;color:var(--t-mute);flex:none;transition:transform .18s var(--ease),color .18s var(--ease)}
.aside-list a:hover{color:var(--brand-600)}
.aside-list a:hover svg{color:var(--brand-600);transform:translateX(3px)}
.aside-card.dark{background:linear-gradient(135deg,var(--ink-900),var(--ink-800));border-color:rgba(255,255,255,.12);color:rgba(255,255,255,.72)}
.aside-card.dark h3{color:#fff;border-bottom-color:rgba(255,255,255,.14)}
.aside-card.dark p{font-size:13.5px;line-height:1.8;margin:6px 0 16px;color:rgba(255,255,255,.7)}
.aside-card.dark .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:var(--t-title)}
.section-head .sub{margin-top:8px;font-size:14.5px;color:var(--t-sub)}
.link-more{font-size:14.5px;font-weight:600;color:var(--brand-600);white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.link-more svg{width:14px;height:14px;transition:transform .18s var(--ease)}
.link-more:hover svg{transform:translateX(3px)}
.card-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(--r-card);overflow:hidden;box-shadow:var(--sd-sm);display:flex;flex-direction:column;transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sd-md)}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:rgba(90,60,224,.08)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-thumb .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--brand-600);box-shadow:var(--sd-sm)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--t-title);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-body h3{color:var(--brand-600)}
.card-body p{font-size:14px;line-height:1.75;color:var(--t-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t-mute)}
.card-foot svg{width:17px;height:17px;color:var(--brand-600)}

/* ---------- FAQ ---------- */
.faq-block{padding:72px 0 0}
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sd-sm)}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;background:none;border:0;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 26px;text-align:left;font-size:16px;font-weight:600;color:var(--t-title);cursor:pointer;transition:color .18s var(--ease),background-color .18s var(--ease)}
.faq-q:hover{color:var(--brand-600);background:#FBFaff}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-item.is-open .faq-q{color:var(--brand-600)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s var(--ease)}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 26px 20px;font-size:15px;line-height:1.9;color:var(--t-sub);max-width:58em}

/* ---------- CTA ---------- */
.cta-band{margin:80px 0 0}
.cta-inner{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--ink-900),var(--ink-800));clip-path:polygon(0 0,100% 0,100% calc(100% - 36px),calc(100% - 36px) 100%,0 100%);border-radius:var(--r-lg);padding:56px 56px 60px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);background-size:18px 18px;opacity:.5;pointer-events:none}
.cta-copy{position:relative;z-index:1;max-width:34em}
.cta-copy h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;color:#fff;line-height:1.35;margin-bottom:12px}
.cta-copy p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.72)}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);margin-top:88px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:34em}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.4px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--mint-400)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding:20px 0 24px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{display:none}
@media (max-width:767px){
  .mobile-tabbar{
    display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:100;
    background:#fff;border-top:1px solid var(--line);padding:8px 4px calc(8px + env(safe-area-inset-bottom));
  }
  .tab-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:2px 0;color:var(--t-mute);font-size:10.5px;line-height:1.25;text-align:center;position:relative}
  .tab-item svg{width:22px;height:22px}
  .tab-item.is-active{color:var(--brand-600)}
  .tab-item.is-active::before{content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);width:26px;height:2px;border-radius:2px;background:var(--brand-600)}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .nav-menu{gap:20px}
  .header-inner{gap:20px}
}
@media (max-width:1023px){
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-aside{position:static}
  .article-main{padding:36px 30px 32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{padding:44px 36px 48px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .nav-menu,.header-actions .btn,.header-actions .icon-btn{display:none}
  .hamburger{display:inline-flex}
  .header-inner{height:62px;gap:12px}
  .brand{font-size:16px}
  .brand-mark{width:30px;height:30px;font-size:12px;border-radius:9px}
  .article-hero{padding:24px 0 30px}
  .article-title{margin:14px 0 18px}
  .article-section{padding:32px 0 0}
  .article-main{padding:26px 18px 24px;border-radius:var(--r-card)}
  .article-body{font-size:16px}
  .article-body h2{margin:32px 0 14px;padding-left:13px}
  .article-body h3{font-size:18px}
  .related,.faq-block{padding-top:48px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .faq-q{padding:18px 18px;font-size:15px}
  .faq-a-inner p{padding:0 18px 18px;font-size:14.5px}
  .cta-band{margin-top:52px}
  .cta-inner{padding:32px 22px 40px;border-radius:var(--r-card);gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;min-width:140px}
  .site-footer{margin-top:56px;padding-top:44px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;padding-bottom:28px}
}
@media (max-width:400px){
  .article-meta{gap:8px 12px;font-size:13px}
  .tab-item{font-size:10px}
}

/* roulang page: category2 */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --page-bg:#F5F4FB;
  --surface:#FFFFFF;
  --border:#E5E3F2;
  --text-strong:#14122B;
  --text-body:#2C2A4A;
  --text-muted:#5C5A78;
  --text-disabled:#9C9AB5;
  --success:#12B76A;
  --warning:#F79009;
  --danger:#F04438;
  --info:#5A3CE0;
  --on-dark:#FFFFFF;
  --on-dark-soft:rgba(255,255,255,.72);
  --on-dark-line:rgba(255,255,255,.12);
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --shadow-sm:0 1px 2px rgba(20,18,43,.06);
  --shadow-md:0 10px 28px rgba(20,18,43,.08);
  --shadow-lg:0 24px 60px rgba(20,18,43,.12);
  --container:1200px;
  --ease:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:var(--page-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-700);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;line-height:1;font-weight:600;
  color:var(--brand-600);background:var(--brand-100);
  padding:8px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-600);}
h1{font-size:clamp(30px,4vw,54px);font-weight:800;line-height:1.15;color:var(--text-strong);letter-spacing:-.01em;}
h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;line-height:1.25;color:var(--text-strong);}
h3{font-size:20px;font-weight:600;line-height:1.4;color:var(--text-strong);}
.lead{font-size:17px;color:var(--text-muted);max-width:640px;}
p.body{max-width:700px;margin-top:18px;color:var(--text-body);}
.muted{color:var(--text-muted);font-size:14px;line-height:1.7;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform var(--ease),background var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:transparent;color:var(--brand-600);border-color:var(--brand-600);}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-on-dark{background:#fff;color:var(--ink-900);}
.btn-on-dark:hover{color:var(--brand-700);transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.28);}
.btn-outline-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-outline-dark:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none!important;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;}
.text-link::after{content:"→";transition:transform var(--ease);}
.text-link:hover::after{transform:translateX(4px);}

/* 标签 */
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.4;
  background:var(--brand-100);color:var(--brand-600);
}
.badge-mint{background:rgba(20,214,180,.14);color:#0E9C83;}
.badge-on-dark{background:rgba(255,255,255,.12);color:#fff;border:1px solid var(--on-dark-line);}
.tag-accent{background:rgba(255,107,61,.14);color:#D94A1C;}

/* 顶栏 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  transition:background var(--ease),box-shadow var(--ease),border-color var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--border),var(--shadow-sm);}
.header-inner{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-strong);font-weight:800;font-size:18px;letter-spacing:-.01em;}
.brand:hover{color:var(--text-strong);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-600);color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(90,60,224,.32);
}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-body);
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100);}
.nav-link.is-active{color:var(--brand-600);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--border);
  background:#fff;color:var(--text-muted);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-600);background:var(--brand-100);}
.icon-btn svg{width:18px;height:18px;}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text-strong);cursor:pointer;align-items:center;justify-content:center;}
.menu-toggle svg{width:20px;height:20px;}

/* 抽屉 */
.drawer{
  position:fixed;inset:0 0 0 auto;width:82%;max-width:360px;z-index:80;
  background:#fff;padding:24px 24px 40px;
  transform:translateX(100%);transition:transform 220ms cubic-bezier(.4,0,.2,1);
  box-shadow:-24px 0 60px rgba(20,18,43,.16);
  display:flex;flex-direction:column;gap:6px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer a.drawer-link{
  padding:14px 12px;border-radius:12px;color:var(--text-body);font-size:16px;font-weight:500;
  border-bottom:1px solid var(--border);
}
.drawer a.drawer-link:hover{background:var(--brand-100);color:var(--brand-600);}
.drawer a.drawer-link.is-active{color:var(--brand-600);font-weight:700;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:#fff;cursor:pointer;color:var(--text-strong);}
.drawer-mask{position:fixed;inset:0;background:rgba(20,18,43,.45);z-index:70;opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* 面包屑 */
.crumb-bar{background:#fff;border-bottom:1px solid var(--border);padding-top:76px;}
.crumb{display:flex;align-items:center;gap:8px;height:52px;font-size:13px;color:var(--text-muted);overflow:hidden;}
.crumb a{color:var(--brand-600);white-space:nowrap;}
.crumb span.sep{color:var(--text-disabled);}
.crumb span.current{color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

/* 头图 */
.page-hero{
  position:relative;overflow:hidden;
  min-height:280px;display:flex;align-items:center;
  background:linear-gradient(120deg,var(--ink-900),var(--ink-800));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),0 100%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(90,60,224,.72) 0%,rgba(36,28,78,.66) 58%,rgba(20,18,43,.78) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:96px 0 88px;color:#fff;}
.page-hero h1{color:#fff;max-width:820px;}
.page-hero .hero-sub{margin-top:16px;max-width:640px;font-size:17px;line-height:1.8;color:var(--on-dark-soft);}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* 章节锚点 */
.anchor-bar{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:76px;z-index:40;}
.anchor-list{display:flex;gap:8px;overflow-x:auto;padding:14px 0;scrollbar-width:none;}
.anchor-list::-webkit-scrollbar{display:none;}
.anchor-list a{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;border:1px solid var(--border);
  font-size:14px;color:var(--text-muted);background:#fff;transition:all var(--ease);
}
.anchor-list a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-100);}

/* 概览统计 */
.overview-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px;}
.stat{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-sm);}
.stat b{display:block;font-size:28px;font-weight:800;color:var(--brand-600);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat b em{font-style:normal;font-size:14px;font-weight:600;color:var(--mint-400);margin-left:2px;}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-muted);}
.overview-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--brand-100);}
.overview-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.overview-visual .visual-tag{
  position:absolute;left:20px;top:20px;display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.92);color:var(--ink-900);
  font-size:12px;font-weight:700;letter-spacing:.02em;
}
.overview-visual .visual-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent-500);display:block;}

/* 交替章节 */
.chapter{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:64px 0;border-bottom:1px solid var(--border);}
.chapter:last-of-type{border-bottom:0;}
.chapter.reverse .chapter-media{order:2;}
.chapter.reverse .chapter-text{order:1;}
.chapter-media{position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--brand-100);box-shadow:var(--shadow-md);}
.chapter-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.chapter-media .num-stamp{
  position:absolute;left:16px;bottom:16px;
  width:52px;height:52px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.94);border:1px solid var(--border);
  color:var(--brand-600);font-weight:800;font-size:17px;letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.chapter-text .chapter-no{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--brand-600);margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.chapter-text h3{font-size:24px;margin-bottom:14px;}
.chapter-text p{margin-bottom:16px;color:var(--text-body);max-width:560px;}
.check-list{display:grid;gap:10px;margin:20px 0 24px;}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-body);}
.check-list li::before{
  content:"";position:absolute;left:0;top:12px;width:14px;height:2px;border-radius:2px;background:var(--mint-400);
}

/* 时间轴 */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px;}
.timeline::before{
  content:"";position:absolute;left:24px;right:24px;top:23px;height:2px;background:var(--border);
}
.tl-step{position:relative;padding-top:0;}
.tl-node{
  position:relative;z-index:2;width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--brand-600);color:var(--brand-600);
  font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.tl-step.current .tl-node{border-color:var(--accent-500);color:var(--accent-500);box-shadow:0 0 0 8px rgba(255,107,61,.16);}
.tl-step h3{font-size:17px;margin:18px 0 8px;}
.tl-step p{font-size:14px;color:var(--text-muted);line-height:1.75;max-width:230px;}
.tl-step .tl-done{display:block;margin-top:6px;font-size:12px;font-weight:700;color:var(--mint-400);}

/* 交付形式列表 */
.deliver-list{display:grid;gap:0;margin-top:32px;border-top:1px solid var(--border);}
.deliver-item{
  display:grid;grid-template-columns:56px 1.1fr 1.6fr auto;gap:24px;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--border);transition:background var(--ease);
}
.deliver-item:hover{background:#fff;}
.deliver-index{
  width:44px;height:44px;border-radius:10px;background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.deliver-item h3{font-size:18px;}
.deliver-item p{font-size:15px;color:var(--text-muted);line-height:1.75;}
.deliver-item .arrow{color:var(--brand-600);font-weight:700;font-size:18px;transition:transform var(--ease);}
.deliver-item:hover .arrow{transform:translateX(4px);}

/* 深色方案矩阵 */
.dark-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--ink-900),var(--ink-800));
  color:#fff;padding:88px 0;
}
.dark-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.5;
}
.dark-band .container{position:relative;z-index:2;}
.dark-band h2{color:#fff;}
.dark-band .lead{color:var(--on-dark-soft);}
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px;}
.matrix-card{
  background:rgba(255,255,255,.05);
  border:1px solid var(--on-dark-line);
  border-radius:var(--r-card);padding:26px;
  transition:transform var(--ease),background var(--ease),border-color var(--ease);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.matrix-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.28);}
.matrix-card h3{color:#fff;font-size:18px;margin:14px 0 10px;}
.matrix-card p{color:var(--on-dark-soft);font-size:14px;line-height:1.75;}
.matrix-card .badge{margin-bottom:0;}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;background:#fff;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--shadow-sm);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:22px 28px;font-size:17px;font-weight:600;color:var(--text-strong);
  transition:background var(--ease),color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--brand-100);color:var(--brand-600);}
.faq-item summary .plus{
  margin-left:auto;flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;background:var(--brand-600);border-radius:2px;
}
.faq-item summary .plus::before{left:10px;top:2px;width:2px;height:18px;}
.faq-item summary .plus::after{top:10px;left:2px;height:2px;width:18px;}
.faq-item[open] summary .plus{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 28px 22px;font-size:15px;color:var(--text-muted);line-height:1.85;max-width:660px;}

/* 内联 CTA */
.inline-cta{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,var(--ink-900),var(--ink-800));
  color:#fff;border-radius:var(--r-lg);
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),0 100%);
}
.inline-cta::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:20px 20px;opacity:.55;
}
.inline-cta > *{position:relative;z-index:2;}
.inline-cta h3{color:#fff;font-size:22px;margin-bottom:8px;}
.inline-cta p{color:var(--on-dark-soft);font-size:14px;}
.inline-cta .cta-actions{display:flex;gap:12px;flex:0 0 auto;}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--text-strong);font-size:17px;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--text-muted);line-height:1.85;max-width:320px;}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text-strong);}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-muted);}
.footer-col a:hover{color:var(--brand-600);}
.footer-contact li{font-size:14px;color:var(--text-muted);}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--border);padding:24px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-disabled);
}

/* 移动底部 Tab */
.mobile-tab{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tab .tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:8px 2px 7px;color:var(--text-disabled);font-size:11px;line-height:1.2;
  position:relative;transition:color var(--ease);
}
.mobile-tab .tab-item svg{width:22px;height:22px;}
.mobile-tab .tab-item.is-active{color:var(--brand-600);}
.mobile-tab .tab-item.is-active::before{
  content:"";position:absolute;top:0;left:18%;right:18%;height:2px;border-radius:2px;background:var(--brand-600);
}

/* 进入动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 220ms ease,transform 220ms ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1279px){
  .container{padding:0 24px;}
  .chapter{gap:48px;}
  .deliver-item{grid-template-columns:52px 1fr 1.4fr auto;gap:18px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-actions .btn{display:none;}
  .overview-grid{grid-template-columns:1fr;gap:32px;}
  .chapter{grid-template-columns:1fr;gap:28px;padding:48px 0;}
  .chapter.reverse .chapter-media{order:0;}
  .chapter.reverse .chapter-text{order:0;}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px;}
  .timeline::before{display:none;}
  .matrix{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .deliver-item{grid-template-columns:48px 1fr auto;row-gap:6px;}
  .deliver-item p{grid-column:2 / -1;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .header-inner{height:64px;gap:12px;}
  .crumb-bar{padding-top:64px;}
  .anchor-bar{top:64px;}
  .page-hero-inner{padding:64px 0 56px;}
  .mobile-tab{display:flex;}
  body{padding-bottom:72px;line-height:1.8;}
  .stat-row{grid-template-columns:1fr;gap:12px;}
  .timeline{grid-template-columns:1fr;gap:24px;}
  .matrix{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .inline-cta{flex-direction:column;align-items:flex-start;padding:28px 24px;gap:20px;}
  .inline-cta .cta-actions{width:100%;flex-direction:column;}
  .inline-cta .cta-actions .btn{width:100%;}
  .faq-item summary{padding:18px 20px;font-size:16px;gap:12px;}
  .faq-item .faq-body{padding:0 20px 20px;}
  .site-footer{margin-top:56px;padding-top:48px;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  .page-hero{min-height:240px;}
  .hero-meta{gap:8px;}
  .deliver-item{grid-template-columns:40px 1fr;gap:12px;}
  .deliver-item .arrow{display:none;}
  .deliver-item p{grid-column:2 / -1;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --page-bg:#F5F4FB;
  --card:#FFFFFF;
  --border:#E5E3F2;
  --heading:#14122B;
  --text:#2C2A4A;
  --muted:#5C5A78;
  --disabled:#9C9AB5;
  --success:#12B76A;
  --warning:#F79009;
  --danger:#F04438;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --shadow-sm:0 1px 2px rgba(20,18,43,.06);
  --shadow-md:0 10px 28px rgba(20,18,43,.08);
  --shadow-lg:0 24px 60px rgba(20,18,43,.12);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,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(--page-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--heading);font-weight:700}
h1{font-size:clamp(30px,4vw,54px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.25;font-weight:700}
h3{font-size:21px;line-height:1.35;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--white{background:#fff}
.section--tight{padding-top:64px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .18s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-700);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{background:#fff;color:var(--brand-700);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.12)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--border);
  transition:box-shadow .18s ease,background .18s ease;
  backdrop-filter:saturate(180%) blur(8px);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);background:#fff}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--heading);flex:0 0 auto}
.brand:hover{color:var(--heading)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-600);color:#fff;font-size:13px;font-weight:800;letter-spacing:.02em;
  font-family:var(--font-num);box-shadow:0 6px 16px rgba(90,60,224,.28);
}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
}
.nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.nav-link.is-active{color:var(--brand-600);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-600);background:var(--brand-100)}
.menu-toggle{display:none}
.mobile-drawer{display:none;border-top:1px solid var(--border);background:#fff}
.mobile-drawer.is-open{display:block}
.mobile-drawer__nav{display:flex;flex-direction:column;padding:12px 0 20px}
.drawer-link{padding:14px 32px;font-size:16px;font-weight:500;color:var(--text)}
.drawer-link.is-active{color:var(--brand-600);font-weight:700;background:var(--brand-100)}

/* ---------- 页面头图 ---------- */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(120deg,rgba(90,60,224,.86),rgba(20,18,43,.88)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover;
  background-position:center,center;
  padding:64px 0 56px;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.page-hero__inner{position:relative;z-index:2;max-width:860px}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{color:#fff}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.12);
  color:#fff;font-size:13px;font-weight:600;margin-bottom:18px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--mint-400)}
.page-hero h1{color:#fff;margin-bottom:18px}
.page-hero__lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:720px}
.hero-facts{display:flex;flex-wrap:wrap;gap:32px;margin-top:36px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12)}
.fact{min-width:120px}
.fact__num{font-family:var(--font-num);font-size:30px;font-weight:700;line-height:1.1;color:var(--mint-400)}
.fact__num small{font-size:14px;font-weight:600;margin-left:2px;color:rgba(255,255,255,.72)}
.fact__label{font-size:13px;color:rgba(255,255,255,.72);margin-top:6px}

/* ---------- 通用板块头 ---------- */
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-600);font-size:13px;font-weight:600;
}
.section-head h2{margin-top:16px}
.section-head .lead{margin-top:14px;color:var(--muted);font-size:16px;max-width:680px}

/* ---------- 能力列表布局 ---------- */
.cap-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start}
.side-nav{
  position:sticky;top:96px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);padding:20px 18px;box-shadow:var(--shadow-sm);
}
.side-nav__title{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:12px}
.side-nav__link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--text);transition:all .18s ease;
}
.side-nav__link::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--border);transition:background .18s ease}
.side-nav__link:hover{background:var(--brand-100);color:var(--brand-600)}
.side-nav__link:hover::before{background:var(--brand-600)}
.side-nav__link.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:600}
.side-nav__link.is-active::before{background:var(--brand-600)}
.side-nav__foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}

.cap-item{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;
  padding:36px 0;border-bottom:1px solid var(--border);
}
.cap-item:first-child{padding-top:0}
.cap-item:last-child{border-bottom:0;padding-bottom:0}
.cap-item:nth-child(even) .cap-media{order:2}
.cap-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--border);background:var(--brand-100);
}
.cap-media{position:relative}
.cap-media .corner-tag{
  position:absolute;top:14px;left:14px;padding:5px 12px;border-radius:999px;
  background:rgba(20,18,43,.72);color:#fff;font-size:12px;font-weight:600;
}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:10px;background:var(--brand-100);color:var(--brand-600);
  font-family:var(--font-num);font-weight:700;font-size:15px;margin-bottom:14px;
}
.cap-body h3{margin-bottom:12px}
.cap-body p{color:var(--text);margin-bottom:16px}
.tick-list li{position:relative;padding-left:24px;font-size:15px;color:var(--muted);margin-bottom:10px;line-height:1.7}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:3px;
  background:var(--mint-400);
}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);margin-top:6px}
.text-link svg{transition:transform .18s ease}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 场景网格 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.scene-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D4F5}
.scene-card__icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-100);color:var(--brand-600);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{font-size:15px;color:var(--muted);line-height:1.8}
.scene-card .tagline{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:var(--brand-600);background:var(--brand-100);padding:4px 12px;border-radius:999px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{position:relative;padding-top:56px}
.step__dot{
  position:absolute;top:0;left:0;width:38px;height:38px;border-radius:50%;
  background:#fff;border:2px solid var(--brand-600);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-weight:700;
  font-family:var(--font-num);font-size:15px;z-index:2;
}
.step::after{
  content:"";position:absolute;top:18px;left:38px;right:-24px;height:2px;background:var(--border);z-index:1;
}
.step:last-child::after{display:none}
.step.is-current .step__dot{border-color:var(--accent-500);color:var(--accent-500);box-shadow:0 0 0 8px rgba(255,107,61,.16)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:8px 28px;box-shadow:var(--shadow-sm)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--heading);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--brand-100);
  color:var(--brand-600);display:inline-flex;align-items:center;justify-content:center;
  transition:transform .22s ease,background .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a__inner{padding:0 0 22px;color:var(--muted);font-size:15px;line-height:1.85;max-width:760px}

/* ---------- 内联 CTA ---------- */
.inline-cta{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:30px 34px;box-shadow:var(--shadow-sm);
}
.inline-cta__text{max-width:640px}
.inline-cta__text strong{display:block;font-size:19px;color:var(--heading);margin-bottom:6px}
.inline-cta__text span{font-size:15px;color:var(--muted)}
.inline-cta__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 底部 CTA ---------- */
.cta-block{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px),
    linear-gradient(135deg,var(--ink-900),var(--ink-800));
  background-size:14px 14px,100% 100%;
  border-radius:var(--r-lg);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),calc(100% - 24px) 100%,0 100%);
  padding:56px 48px;
}
.cta-block h2{color:#fff;margin-bottom:14px}
.cta-block p{color:rgba(255,255,255,.72);max-width:640px;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--heading);margin-bottom:16px}
.footer-about{font-size:14px;color:var(--muted);line-height:1.85;max-width:360px}
.footer-col h3{font-size:15px;font-weight:700;color:var(--heading);margin-bottom:16px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{font-size:14px;color:var(--muted)}
.footer-col ul li a:hover{color:var(--brand-600)}
.footer-contact li{font-size:14px;color:var(--muted);margin-bottom:12px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--disabled);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.98);border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 24px rgba(20,18,43,.06);
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  padding:8px 0 6px;font-size:11px;color:var(--disabled);position:relative;transition:color .18s ease;
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--brand-600);font-weight:600}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:26px;height:2px;border-radius:2px;background:var(--brand-600)}
.tab-item:hover{color:var(--brand-600)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .cap-layout{gap:32px;grid-template-columns:200px minmax(0,1fr)}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-menu{display:none}
  .menu-toggle{display:inline-flex}
  .cap-layout{grid-template-columns:minmax(0,1fr)}
  .side-nav{position:static;margin-bottom:32px;display:flex;flex-wrap:wrap;gap:8px;padding:14px}
  .side-nav__title{width:100%;margin-bottom:4px}
  .side-nav__link{padding:8px 12px;border:1px solid var(--border)}
  .side-nav__foot{width:100%;margin-top:6px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .step:nth-child(2)::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom))}
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .header-inner{height:60px;gap:12px}
  .brand{font-size:16px}
  .brand-mark{width:28px;height:28px;border-radius:8px;font-size:12px}
  .header-actions .btn{display:none}
  .mobile-tabbar{display:grid;grid-template-columns:repeat(5,1fr)}
  .page-hero{padding:40px 0 36px}
  .page-hero__lead{font-size:15px}
  .hero-facts{gap:22px;margin-top:26px;padding-top:22px}
  .fact__num{font-size:24px}
  .cap-item{grid-template-columns:minmax(0,1fr);gap:20px;padding:28px 0}
  .cap-item:nth-child(even) .cap-media{order:0}
  .scene-grid{grid-template-columns:minmax(0,1fr)}
  .steps{grid-template-columns:minmax(0,1fr);gap:0}
  .step{padding:0 0 26px 52px}
  .step::after{top:38px;bottom:6px;left:18px;right:auto;width:2px;height:auto;background:var(--border)}
  .step:last-child{padding-bottom:0}
  .step:last-child::after{display:none}
  .faq-list{padding:4px 18px;border-radius:var(--r-card)}
  .faq-q{font-size:15px;padding:18px 0}
  .inline-cta{padding:24px 20px;border-radius:var(--r-card)}
  .cta-block{padding:36px 22px;border-radius:var(--r-card)}
  .site-footer{padding:48px 0 22px;margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-about{max-width:none}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .hero-facts{gap:16px 24px}
  .fact{min-width:96px}
  .btn{width:100%}
  .inline-cta__actions{width:100%}
  .cta-actions{width:100%}
  .hero-badge{font-size:12px}
}

/* roulang page: category3 */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --bg:#F5F4FB;
  --surface:#FFFFFF;
  --line:#E5E3F2;
  --text-1:#14122B;
  --text-2:#2C2A4A;
  --text-3:#5C5A78;
  --text-4:#9C9AB5;
  --ok:#12B76A;
  --warn:#F79009;
  --err:#F04438;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --sh-sm:0 1px 2px rgba(20,18,43,.06);
  --sh-md:0 10px 28px rgba(20,18,43,.08);
  --sh-lg:0 24px 60px rgba(20,18,43,.12);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-700);}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.25;}
h1{font-size:clamp(30px,4vw,54px);font-weight:800;line-height:1.15;}
h2{font-size:clamp(24px,2.6vw,36px);font-weight:700;}
h3{font-size:20px;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head p{margin-top:16px;color:var(--text-3);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--brand-600);text-transform:uppercase;
  background:var(--brand-100);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-sm);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--text-1);flex:0 0 auto;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.04em;
  font-family:var(--font-num);
}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;
  padding:0 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text-2);
  transition:background .18s ease,color .18s ease;white-space:nowrap;
}
.nav-link:hover{background:var(--brand-100);color:var(--brand-700);}
.nav-link.is-active{color:var(--brand-600);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand-600);
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--text-3);cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{color:var(--brand-600);border-color:var(--brand-600);}
.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);margin:4px auto;transition:transform .18s ease,opacity .18s ease;}
.hamburger.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.hamburger.is-open span:nth-child(2){opacity:0;}
.hamburger.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{border-color:var(--brand-600);color:var(--brand-600);background:transparent;}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);}
.btn-accent{background:var(--accent-500);color:#fff;}
.btn-accent:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);background:#F55C2C;}
.btn-accent:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ink-900);}
.btn-light:hover{background:#ECE8FF;color:var(--brand-700);transform:translateY(-2px);}
.btn-ghost-light{border-color:rgba(255,255,255,.35);color:#fff;background:transparent;}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 内页头图 ============ */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(115deg,rgba(90,60,224,.82),rgba(20,18,43,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  min-height:268px;display:flex;align-items:center;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
}
.page-hero::after{
  content:"";position:absolute;right:0;bottom:0;width:220px;height:6px;background:var(--accent-500);
}
.page-hero-inner{padding:56px 0;position:relative;z-index:1;}
.page-hero .eyebrow{background:rgba(255,255,255,.14);color:#fff;}
.page-hero h1{color:#fff;margin-bottom:18px;}
.page-hero-lead{max-width:660px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.78);}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);
  margin-bottom:20px;flex-wrap:wrap;
}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;}

/* ============ 筛选标签 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.filter-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--text-3);font-size:14px;
  cursor:pointer;transition:all .18s ease;
}
.filter-chip:hover{border-color:var(--brand-600);color:var(--brand-700);}
.filter-chip.is-active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;font-weight:600;}
.filter-hint{font-size:13px;color:var(--text-4);margin-bottom:24px;}

/* ============ 案例网格 ============ */
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.case-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#D9D2F7;}
.case-card:hover .case-title{color:var(--brand-600);}
.case-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-100);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.case-card:hover .case-media img{transform:scale(1.04);}
.case-badge{
  position:absolute;left:12px;top:12px;padding:4px 12px;border-radius:999px;
  background:rgba(20,18,43,.72);color:#fff;font-size:12px;backdrop-filter:none;
}
.case-new{
  position:absolute;right:12px;top:12px;padding:4px 10px;border-radius:999px;
  background:var(--accent-500);color:#fff;font-size:11px;font-weight:700;letter-spacing:.08em;
}
.case-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.case-title{font-size:18px;font-weight:600;color:var(--text-1);line-height:1.5;transition:color .18s ease;}
.case-desc{font-size:14px;line-height:1.75;color:var(--text-3);}
.case-metrics{
  display:flex;gap:22px;padding-top:16px;margin-top:auto;border-top:1px solid var(--line);
}
.metric-num{font-family:var(--font-num);font-size:20px;font-weight:800;color:var(--brand-600);line-height:1.2;}
.metric-label{font-size:12px;color:var(--text-4);line-height:1.5;margin-top:2px;}
.case-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);}
.case-link:hover{gap:10px;}
.case-link .arrow{transition:transform .18s ease;}

/* ============ 深色面板 ============ */
.dark-panel{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--ink-900),var(--ink-800));
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
  padding:56px 48px;
}
.dark-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.075) 1px,transparent 1px);
  background-size:18px 18px;
}
.dark-panel > *{position:relative;z-index:1;}
.dark-panel h2{color:#fff;}
.dark-panel .section-head p{color:rgba(255,255,255,.72);}
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:8px;}
.stat-item{border-left:2px solid rgba(255,255,255,.12);padding-left:20px;}
.stat-item:first-child{border-left-color:var(--mint-400);}
.stat-value{font-family:var(--font-num);font-size:clamp(28px,3.2vw,42px);font-weight:800;color:var(--mint-400);line-height:1.1;}
.stat-value .unit{font-size:14px;font-weight:600;color:rgba(255,255,255,.62);margin-left:4px;font-family:var(--font-cn);}
.stat-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;}
.stat-note{font-size:13px;color:rgba(255,255,255,.45);margin-top:24px;}

/* ============ 流程 ============ */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.steps::before{
  content:"";position:absolute;top:15px;left:16px;right:16px;height:2px;background:var(--line);
}
.step{position:relative;}
.step-dot{
  position:relative;z-index:1;width:32px;height:32px;border-radius:50%;
  background:var(--brand-600);color:#fff;display:grid;place-items:center;
  font-family:var(--font-num);font-size:14px;font-weight:700;margin-bottom:18px;
}
.step.is-current .step-dot{background:var(--accent-500);box-shadow:0 0 0 8px rgba(255,107,61,.16);}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--text-3);line-height:1.75;}

/* ============ 客户评价 ============ */
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.quote-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 28px 26px;display:flex;flex-direction:column;gap:16px;
  transition:transform .18s ease,box-shadow .18s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);}
.quote-mark{font-family:var(--font-num);font-size:40px;font-weight:800;color:var(--brand-100);line-height:1;}
.quote-text{font-size:15px;line-height:1.85;color:var(--text-2);}
.quote-meta{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line);margin-top:auto;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-100);color:var(--brand-600);
  display:grid;place-items:center;font-weight:700;font-size:14px;flex:0 0 40px;
}
.quote-name{font-size:14px;font-weight:600;color:var(--text-1);}
.quote-role{font-size:13px;color:var(--text-4);}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;}
.faq-item:hover{border-color:#D9D2F7;}
.faq-item.is-open{border-color:var(--brand-600);box-shadow:var(--sh-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-icon{position:relative;width:22px;height:22px;flex:0 0 22px;transition:transform .22s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-600);border-radius:2px;}
.faq-icon::before{left:10px;top:3px;width:2px;height:16px;}
.faq-icon::after{top:10px;left:3px;height:2px;width:16px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-3);max-width:840px;}

/* ============ 行内 CTA ============ */
.inline-cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 32px;box-shadow:var(--sh-sm);
}
.inline-cta h3{font-size:20px;margin-bottom:6px;}
.inline-cta p{font-size:14px;color:var(--text-3);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);color:rgba(255,255,255,.72);
  padding:72px 0 28px;position:relative;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-top:16px;max-width:340px;}
.footer-col h3{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding-top:24px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 移动端抽屉与底部 Tab ============ */
.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:70;background:#fff;
  padding:20px 20px calc(96px + env(safe-area-inset-bottom));
  transform:translateX(100%);transition:transform .22s ease;
  display:none;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.mobile-drawer a{display:block;padding:15px 4px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line);}
.mobile-drawer a.is-active{color:var(--brand-600);font-weight:700;}
.mobile-drawer .btn{width:100%;margin-top:22px;}
.mobile-tabs{display:none;}

@media (max-width:1279px){
  .nav-link{padding:0 10px;font-size:14px;}
}
@media (max-width:1199px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;row-gap:32px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .section-tight{padding:52px 0;}
  .case-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:32px;}
  .quote-grid{grid-template-columns:1fr;}
  .dark-panel{padding:48px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .nav-menu{display:none;}
  .header-inner .btn{display:none;}
  .icon-btn{display:none;}
  .hamburger{display:grid;}
  .mobile-drawer{display:block;}
  body{padding-bottom:76px;}
  .mobile-tabs{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;background:#fff;
    border-top:1px solid var(--line);
    padding:6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .tab-item{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
    position:relative;padding-top:8px;font-size:10.5px;color:var(--text-4);
    white-space:nowrap;line-height:1.4;
  }
  .tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;}
  .tab-item.is-active{color:var(--brand-600);}
  .tab-item.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:22px;height:2px;border-radius:2px;background:var(--brand-600);
  }
  .page-hero{min-height:220px;clip-path:none;}
  .page-hero-inner{padding:44px 0;}
  .page-hero-lead{font-size:15px;}
  .case-grid{grid-template-columns:1fr;}
  .dark-panel{padding:36px 20px;clip-path:none;}
  .stat-strip{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;gap:28px;}
  .steps::before{display:none;}
  .step{padding-left:48px;}
  .step-dot{position:absolute;left:0;top:0;margin:0;}
  .inline-cta{flex-direction:column;align-items:flex-start;padding:24px 20px;}
  .inline-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .faq-q{padding:18px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 20px;}
  .quote-card{padding:24px 20px;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  .page-hero h1{font-size:27px;}
  .section-head p{font-size:15px;}
  .case-metrics{gap:16px;}
  .metric-num{font-size:18px;}
}

/* roulang page: category4 */
:root{
  --brand-600:#5A3CE0;
  --brand-700:#4A2ECC;
  --brand-100:#ECE8FF;
  --mint-400:#14D6B4;
  --accent-500:#FF6B3D;
  --ink-900:#14122B;
  --ink-800:#241C4E;
  --bg:#F5F4FB;
  --surface:#FFFFFF;
  --border:#E5E3F2;
  --text:#14122B;
  --text-body:#2C2A4A;
  --text-muted:#5C5A78;
  --text-disabled:#9C9AB5;
  --success:#12B76A;
  --warning:#F79009;
  --danger:#F04438;
  --on-dark:#FFFFFF;
  --on-dark-soft:rgba(255,255,255,.72);
  --on-dark-line:rgba(255,255,255,.12);
  --radius-card:16px;
  --radius-lg:22px;
  --radius-btn:12px;
  --shadow-sm:0 1px 2px rgba(20,18,43,.06);
  --shadow-md:0 10px 28px rgba(20,18,43,.08);
  --shadow-lg:0 24px 60px rgba(20,18,43,.12);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --section-y:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:var(--bg);
  padding-bottom:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-700)}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.25}
p{margin:0 0 20px}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand-600);color:#fff;padding:10px 18px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}
/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;
  border-bottom:1px solid var(--on-dark-line);
  transition:background-color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.2px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-600),var(--brand-700));color:#fff;font-size:14px;font-weight:800;
  box-shadow:0 6px 16px rgba(90,60,224,.35);
}
.brand-name{font-size:18px;color:#fff;transition:color .18s ease}
.site-header.is-scrolled .brand-name{color:var(--text)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;font-weight:500;
  color:var(--on-dark-soft);border-radius:10px;transition:color .18s ease,background-color .18s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600);
}
.site-header.is-scrolled .nav-link{color:var(--text-body)}
.site-header.is-scrolled .nav-link:hover{color:var(--brand-600);background:var(--brand-100)}
.site-header.is-scrolled .nav-link.is-active{color:var(--brand-600)}
.site-header.is-scrolled .nav-link.is-active::after{background:var(--brand-600)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--on-dark-line);color:#fff;transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.12)}
.site-header.is-scrolled .icon-btn{border-color:var(--border);color:var(--text-body);background:#fff}
.site-header.is-scrolled .icon-btn:hover{background:var(--brand-100);color:var(--brand-600)}
.icon-btn svg{width:18px;height:18px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--on-dark-line);color:#fff;align-items:center;justify-content:center}
.site-header.is-scrolled .nav-toggle{border-color:var(--border);color:var(--text)}
.nav-toggle svg{width:20px;height:20px}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 6px 18px rgba(90,60,224,.24)}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{border-color:var(--brand-600);color:var(--brand-600);background:transparent}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-on-dark{background:#fff;color:var(--ink-900)}
.btn-on-dark:hover{background:#fff;color:var(--brand-700);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline-dark{border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline-dark:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 6px 18px rgba(255,107,61,.28)}
.btn-accent:hover{background:#F05527;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600);font-size:15px}
.text-link:hover{color:var(--brand-700)}
.text-link svg{width:16px;height:16px;transition:transform .18s ease}
.text-link:hover svg{transform:translateX(3px)}
/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(20,18,43,.55);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;background:#fff;z-index:100;
  transform:translateX(100%);transition:transform .24s ease;padding:24px 20px;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-title{font-weight:800;color:var(--text);font-size:16px}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;color:var(--text-body)}
.drawer-close svg{width:18px;height:18px}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:block;padding:13px 14px;border-radius:12px;color:var(--text-body);font-weight:500}
.drawer-nav a:hover{background:var(--bg);color:var(--brand-600)}
.drawer-nav a.is-active{background:var(--brand-100);color:var(--brand-600);font-weight:700}
.drawer-cta{margin-top:20px}
.drawer-cta .btn{width:100%}
/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:132px 0 64px;min-height:272px;
  background:
    linear-gradient(120deg,rgba(90,60,224,.42),rgba(20,18,43,.82)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:18px 18px;opacity:.9;
}
.page-hero-inner{position:relative;z-index:2;max-width:860px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-soft);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--on-dark-soft)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.4)}
.breadcrumb .current{color:rgba(255,255,255,.92)}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;background:var(--brand-100);color:var(--brand-600);
}
.badge-dark{background:rgba(255,255,255,.14);color:#fff;border:1px solid var(--on-dark-line)}
.badge-mint{background:rgba(20,214,180,.14);color:#0E9C82}
.badge-accent{background:rgba(255,107,61,.14);color:#D94A1E}
.page-hero h1{color:#fff;font-size:clamp(30px,4vw,54px);font-weight:800;line-height:1.15;margin:18px 0 14px}
.page-hero-lead{color:var(--on-dark-soft);font-size:17px;max-width:660px;margin-bottom:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px}
.hero-stat strong{display:block;font-family:"Segoe UI",Inter,Arial,sans-serif;font-size:28px;font-weight:800;color:var(--mint-400);line-height:1.2}
.hero-stat span{font-size:13px;color:var(--on-dark-soft)}
/* ---------- sections ---------- */
.section{padding:var(--section-y) 0}
.section-alt{background:#fff}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);margin-bottom:14px}
.section-head p{color:var(--text-muted);max-width:46em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--brand-600);margin-bottom:12px}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand-600)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
/* card base */
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D9D5EE}
.card:hover h3{color:var(--brand-600)}
.card h3{font-size:19px;font-weight:600;margin-bottom:10px;transition:color .2s ease}
.card p{color:var(--text-muted);font-size:15px;line-height:1.8;margin-bottom:0}
/* entry grid */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.entry-card{display:flex;flex-direction:column;height:100%}
.entry-icon{
  width:48px;height:48px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-600);margin-bottom:18px;
}
.entry-icon svg{width:22px;height:22px}
.entry-card .entry-tag{font-size:12px;color:var(--text-muted);margin-bottom:6px;display:block}
.entry-card .text-link{margin-top:18px}
/* topic list */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.topic-item{
  display:flex;align-items:flex-start;gap:16px;padding:20px 0;border-bottom:1px solid var(--border);
  transition:background-color .18s ease;
}
.topic-item:last-child{border-bottom:none}
.topic-num{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-600);font-weight:700;font-size:13px;
  font-family:"Segoe UI",Inter,Arial,sans-serif;
}
.topic-body h3{font-size:16px;font-weight:600;margin-bottom:6px}
.topic-body p{font-size:14px;color:var(--text-muted);line-height:1.75;margin-bottom:0}
.topic-item:hover .topic-body h3{color:var(--brand-600)}
.topic-arrow{flex:0 0 auto;margin-left:auto;color:var(--text-disabled);transition:transform .18s ease,color .18s ease}
.topic-arrow svg{width:16px;height:16px}
.topic-item:hover .topic-arrow{color:var(--brand-600);transform:translateX(3px)}
/* faq */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px}
.faq-item{border-bottom:1px solid var(--border);background:transparent}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand-600)}
.faq-icon{flex:0 0 auto;width:26px;height:26px;position:relative;border-radius:50%;background:var(--brand-100);transition:transform .22s ease,background-color .22s ease}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--brand-600);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-500)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-item.is-open .faq-a{max-height:420px;padding-bottom:20px}
.faq-a p{font-size:15px;color:var(--text-muted);line-height:1.85;max-width:46em}
/* timeline */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.timeline-item{position:relative;padding-top:52px}
.tl-dot{
  position:absolute;top:0;left:0;width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--brand-600);color:var(--brand-600);font-size:13px;font-weight:700;
  font-family:"Segoe UI",Inter,Arial,sans-serif;z-index:2;
}
.tl-bar{position:absolute;top:16px;left:42px;right:-24px;height:2px;background:var(--border);z-index:1}
.timeline-item:last-child .tl-bar{display:none}
.timeline-item.is-current .tl-dot{background:var(--accent-500);border-color:var(--accent-500);color:#fff;box-shadow:0 0 0 8px rgba(255,107,61,.16)}
.timeline-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.timeline-item p{font-size:14px;color:var(--text-muted);line-height:1.75;margin-bottom:0}
/* split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);position:relative}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(90,60,224,.16),rgba(20,18,43,.28))}
.check-list{display:grid;gap:14px;margin-top:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-body)}
.check-list .tick{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:rgba(20,214,180,.16);
  display:inline-flex;align-items:center;justify-content:center;margin-top:4px;
}
.check-list .tick svg{width:12px;height:12px;color:#0E9C82}
/* form */
.form-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.field .req{color:var(--accent-500);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 16px;border:1px solid var(--border);border-radius:12px;background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;color:var(--text-body);
}
.field textarea{height:120px;padding:14px 16px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-disabled)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(90,60,224,.12);
}
.field .hint{font-size:12px;color:var(--text-muted);margin-top:6px}
.privacy-note{font-size:12px;color:var(--text-muted);margin-top:14px;line-height:1.7}
.form-note{margin-top:14px;font-size:14px;color:var(--success);font-weight:600;min-height:22px}
.info-card{background:var(--ink-900);color:#fff;border-radius:var(--radius-lg);padding:30px;
  background-image:linear-gradient(135deg,var(--ink-900),var(--ink-800));
  border:1px solid rgba(255,255,255,.12);position:relative;overflow:hidden}
.info-card h3{color:#fff;font-size:18px;margin-bottom:16px}
.info-list{display:grid;gap:16px}
.info-list li{display:flex;gap:12px;font-size:14px;color:var(--on-dark-soft);line-height:1.75}
.info-list .dot{flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--mint-400);margin-top:9px}
.info-divider{height:1px;background:rgba(255,255,255,.12);margin:22px 0}
.info-card .small{font-size:13px;color:rgba(255,255,255,.6)}
.info-stat{display:flex;gap:28px;margin-top:6px}
.info-stat strong{display:block;font-size:22px;font-weight:800;color:var(--accent-500);font-family:"Segoe UI",Inter,Arial,sans-serif;line-height:1.2}
.info-stat span{font-size:12px;color:var(--on-dark-soft)}
/* cta */
.cta-band{
  background:linear-gradient(120deg,var(--ink-900),var(--ink-800));
  color:#fff;position:relative;overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
  padding:56px 0;
}
.cta-band::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);background-size:18px 18px;pointer-events:none}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:clamp(20px,2vw,26px);margin-bottom:8px}
.cta-inner p{color:var(--on-dark-soft);font-size:15px;max-width:46em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
/* footer */
.site-footer{background:#100E23;color:rgba(255,255,255,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:38em}
.footer-col h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(255,255,255,.68);font-size:14px}
.footer-col a:hover{color:#fff}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68)}
.footer-contact a{color:var(--mint-400)}
.footer-contact a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
/* mobile tab */
.mobile-tab{display:none}
/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease}
.reveal.is-visible{opacity:1;transform:none}
/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
  .nav-link{padding:10px 11px;font-size:14px}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  :root{--section-y:72px}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .form-layout{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .timeline{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .timeline-item:nth-child(2) .tl-bar{display:none}
  .timeline-item:nth-child(4) .tl-bar{display:none}
}
@media (max-width:767px){
  :root{--section-y:56px}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
  .container{padding:0 16px}
  .header-inner{height:64px}
  .brand-name{font-size:16px}
  .page-hero{padding:112px 0 48px;min-height:auto}
  .page-hero-lead{font-size:15px}
  .hero-stats{gap:24px}
  .hero-stat strong{font-size:22px}
  .entry-grid{grid-template-columns:1fr}
  .topic-grid{grid-template-columns:1fr;gap:0}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .timeline{grid-template-columns:1fr;gap:26px}
  .timeline-item{padding-top:0;padding-left:56px}
  .tl-dot{top:2px}
  .tl-bar{display:none}
  .form-card{padding:24px}
  .form-row{grid-template-columns:1fr;gap:0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .mobile-tab{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:85;
    background:rgba(255,255,255,.98);border-top:1px solid var(--border);
    padding-bottom:env(safe-area-inset-bottom);
    backdrop-filter:blur(8px);
  }
  .mobile-tab a{
    flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
    padding:9px 2px 7px;font-size:11px;color:var(--text-disabled);position:relative;
  }
  .mobile-tab a svg{width:22px;height:22px}
  .mobile-tab a.is-active{color:var(--brand-600);font-weight:700}
  .mobile-tab a.is-active::before{
    content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:26px;height:2px;border-radius:2px;background:var(--brand-600);
  }
}
@media (max-width:520px){
  .page-hero h1{font-size:26px}
  .btn{height:46px;padding:0 18px;font-size:14px}
  .card{padding:20px}
  .info-card{padding:24px}
}