/* roulang page: index */
:root{--primary:#1746a2;--primary-dark:#0f2f6e;--primary-soft:#edf2ff;--accent:#f5a524;--accent-soft:#fff7e6;--bg:#ffffff;--bg-soft:#f5f7fc;--ink:#14203b;--ink-weak:#5b6478;--ink-faint:#8a93a6;--border:#e5e9f2;--radius-lg:24px;--radius-md:16px;--radius-sm:10px;--shadow-card:0 12px 40px rgba(20,32,59,.08);--shadow-hover:0 24px 70px rgba(23,70,162,.16);--header-h:74px}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.25;color:var(--ink);margin:0 0 .75rem}
p{margin:0 0 1rem}
a{color:var(--primary);text-decoration:none;transition:color .25s}
a:hover{color:var(--primary-dark)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
.grid-container{max-width:1200px;padding-left:1.5rem;padding-right:1.5rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border:1px solid transparent;border-radius:999px;padding:.72rem 1.5rem;font-weight:600;font-size:.95rem;line-height:1.2;cursor:pointer;transition:all .28s ease;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 30px rgba(23,70,162,.28)}
.btn-accent{background:var(--accent);color:#1a1405}
.btn-accent:hover{background:#e09514;color:#1a1405;transform:translateY(-2px);box-shadow:0 12px 30px rgba(245,165,36,.3)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.32);backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.24);color:#fff;border-color:#fff}
.btn-sm{padding:.48rem 1.1rem;font-size:.875rem}
.section{padding:5.2rem 0}
.section-head{max-width:760px;margin:0 auto 3rem;text-align:center}
.section-eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.85rem;font-weight:600;letter-spacing:.08em;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(23,70,162,.14);padding:.35rem 1rem;border-radius:999px;margin-bottom:1rem}
.section-title{font-size:clamp(1.8rem,3vw,2.6rem);margin-bottom:.75rem}
.section-sub{color:var(--ink-weak);font-size:1.05rem}
.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.header-inner{max-width:1200px;height:100%;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;position:relative}
.brand{display:inline-flex;align-items:center;gap:.6rem;flex-shrink:0}
.brand-dot{width:34px;height:34px;border-radius:10px;background:var(--primary);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem;box-shadow:0 6px 16px rgba(23,70,162,.3)}
.brand-text{font-size:1.18rem;font-weight:800;color:var(--ink);letter-spacing:.01em}
.brand-official{font-size:.68rem;font-weight:600;color:var(--primary);background:var(--primary-soft);border:1px solid rgba(23,70,162,.16);padding:.12rem .5rem;border-radius:999px;letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:2.2rem}
.nav-link{position:relative;font-size:.95rem;font-weight:500;color:var(--ink-weak);padding:.4rem 0}
.nav-link::after{content:"";position:absolute;left:0;bottom:-4px;width:100%;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .3s ease}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{transform:scaleX(1)}
.header-action .btn{background:var(--primary);color:#fff}
.header-action .btn:hover{background:var(--primary-dark)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:12px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}
.nav-toggle .bar{width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle.active .bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.active .bar:nth-child(2){opacity:0}
.nav-toggle.active .bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.page-banner{position:relative;padding:6rem 0;background:linear-gradient(105deg,rgba(8,20,54,.92),rgba(23,70,162,.72)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;color:#fff}
.page-banner h1{color:#fff;font-size:clamp(2rem,4vw,3rem)}
.page-banner p{color:rgba(255,255,255,.85);max-width:640px;font-size:1.05rem;margin-bottom:0}
.breadcrumb{display:flex;flex-wrap:wrap;gap:.5rem;font-size:.85rem;margin-bottom:1.5rem;color:rgba(255,255,255,.7)}
.breadcrumb a{color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:.7rem;margin:0 .2rem}
.entry-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.2rem 2rem;height:100%;text-align:center;transition:all .3s ease;position:relative;overflow:hidden}
.entry-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s}
.entry-card:hover{box-shadow:var(--shadow-card);transform:translateY(-8px)}
.entry-card:hover::before{opacity:1}
.entry-icon{width:72px;height:72px;border-radius:22px;background:var(--primary-soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:1.8rem;margin-bottom:1.3rem}
.entry-card h3{font-size:1.25rem;margin-bottom:.4rem}
.entry-card .entry-desc{color:var(--ink-weak);font-size:.92rem;margin-bottom:1.4rem;min-height:44px}
.entry-btn{display:inline-flex;align-items:center;gap:.4rem;font-weight:600;color:var(--primary);border:1px solid var(--primary);border-radius:999px;padding:.5rem 1.3rem;transition:all .3s}
.entry-btn:hover{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(23,70,162,.2)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.6rem}
.step-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem 1.6rem;text-align:center;position:relative;transition:all .3s}
.step-card:hover{box-shadow:var(--shadow-card);transform:translateY(-6px)}
.step-num{width:52px;height:52px;border-radius:50%;background:var(--primary);color:#fff;font-size:1.3rem;font-weight:800;display:inline-flex;align-items:center;justify-content:center;margin-bottom:1rem;box-shadow:0 8px 20px rgba(23,70,162,.25)}
.step-card h3{font-size:1.05rem}
.step-card p{font-size:.88rem;color:var(--ink-weak);margin-bottom:0}
.safety-box{background:var(--accent-soft);border:1px solid rgba(245,165,36,.25);border-radius:var(--radius-lg);padding:2.4rem;display:flex;gap:1.4rem;align-items:flex-start}
.safety-icon{font-size:2rem;color:var(--accent);flex-shrink:0}
.safety-box h3{margin-bottom:.6rem}
.safety-box ul{list-style:disc;padding-left:1.2rem}
.safety-box li{color:var(--ink-weak);font-size:.93rem;margin-bottom:.4rem}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:1rem;background:#fff;overflow:hidden;transition:box-shadow .3s}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-item summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;padding:1.3rem 1.6rem;font-weight:600;font-size:1rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--primary);transition:transform .3s}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-answer{padding:0 1.6rem 1.4rem;color:var(--ink-weak);font-size:.94rem;line-height:1.8}
.cta-section{position:relative;background:linear-gradient(120deg,rgba(8,20,54,.94),rgba(23,70,162,.82)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;padding:4.5rem 0;text-align:center}
.cta-section .section-title{color:#fff}
.cta-section p{color:rgba(255,255,255,.85);max-width:600px;margin:0 auto 2rem}
.site-footer{background:#0b1526;color:rgba(255,255,255,.72)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:3rem;padding:4rem 0 2.8rem}
.footer-brand-link{display:inline-flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:800;color:#fff;margin-bottom:1rem}
.footer-brand-link .brand-dot{background:var(--accent);color:#1a1405}
.footer-brand p{font-size:.9rem;line-height:1.8;max-width:300px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:1.2rem}
.footer-col a{display:block;color:rgba(255,255,255,.65);font-size:.9rem;padding:.3rem 0;transition:color .3s}
.footer-col a:hover{color:var(--accent)}
.footer-contact p{font-size:.88rem;margin-bottom:.5rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.6rem 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.8rem;font-size:.85rem;color:rgba(255,255,255,.5)}
@media(max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:2rem}.steps-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.main-nav{position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;gap:.4rem;padding:0 1.5rem;display:none;border-bottom:1px solid var(--border);box-shadow:0 20px 40px rgba(0,0,0,.08)}.main-nav.open{display:flex;padding:1rem 1.5rem 1.6rem}.nav-link{display:block;width:100%;padding:.7rem 0;border-bottom:1px solid var(--bg-soft)}.nav-link::after{display:none}.nav-toggle{display:flex}.header-action{display:none}}
@media(max-width:768px){.section{padding:3.8rem 0}.steps-grid{grid-template-columns:1fr;gap:1.2rem}.safety-box{flex-direction:column}.footer-grid{grid-template-columns:1fr;gap:2rem}.footer-bottom{flex-direction:column}}
@media(max-width:520px){.header-inner{padding:0 1rem}.entry-card{padding:1.6rem 1.2rem}.faq-item summary{padding:1rem}}

/* roulang page: article */
:root {
  --primary: #1a2b56;
  --primary-light: #27458a;
  --accent: #e8a33d;
  --accent-light: #f7c768;
  --bg: #f5f7fb;
  --bg-alt: #eef1f7;
  --text: #1e293b;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 6px 30px rgba(0, 0, 0, .07);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, .12);
  --transition: .35s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-container { max-width: 1280px; }

/* 头部导航 */
.site-header {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-dot {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 14px rgba(26, 43, 86, .3);
}
.brand-text { font-size: 1.18rem; font-weight: 800; color: var(--primary); letter-spacing: .02em; }
.brand-official {
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(232, 163, 61, .12);
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: .04em;
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; }
.nav-toggle .bar { width: 24px; height: 2px; background: var(--primary); border-radius: 2px; transition: all var(--transition); }
.nav-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active .bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 16px;
  border-radius: 30px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-weak);
  position: relative;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
  transition: transform var(--transition);
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { transform: translateX(-50%) scaleX(1); }
.header-action { display: flex; align-items: center; gap: 12px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: .95rem;
  padding: 12px 24px;
  border-radius: 30px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 16px rgba(26, 43, 86, .25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26, 43, 86, .32); color: #fff; }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), #d4892e);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232, 163, 61, .3);
}
.btn-accent:hover { transform: translateY(-2px); color: #fff; box-shadow: 0 10px 28px rgba(232, 163, 61, .4); }
.btn-light { background: #fff; color: var(--primary); border: 1px solid var(--border); }
.btn-light:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-sm { padding: 8px 18px; font-size: .88rem; }

/* Hero 文章横幅 */
.article-hero {
  background-size: cover;
  background-position: center;
  position: relative;
  padding: 90px 0 64px;
  color: #fff;
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16, 26, 58, .88) 0%, rgba(26, 43, 86, .72) 60%, rgba(232, 163, 61, .35) 100%);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: .88rem; color: rgba(255,255,255,.75); margin-bottom: 20px; }
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: .7rem; color: rgba(255,255,255,.5); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: .8rem;
  font-weight: 700;
  background: rgba(255,255,255,.16);
  color: #fff;
  border: 1px solid rgba(255,255,255,.28);
  margin-bottom: 16px;
}
.badge-accent { background: rgba(232,163,61,.25); border-color: rgba(232,163,61,.6); }
.article-hero h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.35;
  max-width: 860px;
  text-shadow: 0 2px 20px rgba(0,0,0,.2);
}
.article-hero-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: .88rem; color: rgba(255,255,255,.8); }
.article-hero-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-hero-meta i { color: var(--accent-light); }

/* 文章主体 */
.article-layout-section { padding: 60px 0; }
.article-layout { display: flex; gap: 40px; }
.article-main { flex: 1; min-width: 0; }
.article-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 44px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.article-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}
.article-toolbar-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: .85rem; color: var(--text-weak); }
.article-toolbar-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-share { display: flex; gap: 8px; }
.share-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-alt);
  color: var(--text-weak);
  font-size: .8rem;
  transition: all var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.article-content { font-size: 1.02rem; line-height: 1.95; color: var(--text); }
.article-content h2 { font-size: 1.45rem; margin: 34px 0 16px; color: var(--primary); font-weight: 700; }
.article-content h3 { font-size: 1.2rem; margin: 26px 0 12px; color: var(--primary); font-weight: 700; }
.article-content p { margin-bottom: 18px; }
.article-content a { color: var(--primary); border-bottom: 1px solid rgba(26,43,86,.3); }
.article-content a:hover { color: var(--accent); border-color: var(--accent); }
.article-content img { border-radius: 12px; margin: 22px 0; box-shadow: 0 10px 30px rgba(0,0,0,.1); }
.article-content ul, .article-content ol { margin: 0 0 18px 22px; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-alt);
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  margin: 20px 0;
  color: var(--text-weak);
}
.article-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: .92rem; }
.article-content table th, .article-content table td { border: 1px solid var(--border); padding: 12px; text-align: left; }
.article-content table th { background: var(--bg-alt); font-weight: 700; }
.article-footer {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-tags span {
  background: var(--bg-alt);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: .8rem;
  color: var(--text-weak);
  display: flex; align-items: center; gap: 6px;
}
.article-nav { display: flex; gap: 10px; }
.article-nav a { font-size: .85rem; color: var(--text-weak); }
.article-nav a:hover { color: var(--primary); }

/* 文章未找到 */
.not-found-section { padding: 90px 0; min-height: 50vh; }
.not-found-box {
  text-align: center;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 70px 40px;
  max-width: 560px;
  margin: 0 auto;
}
.not-found-box i { font-size: 3rem; color: var(--accent); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-weak); margin-bottom: 28px; }

/* 侧边栏 */
.article-sidebar { width: 340px; flex-shrink: 0; display: flex; flex-direction: column; gap: 26px; }
.side-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.side-card h3 {
  font-size: 1.02rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-alt);
}
.side-card h3 i { color: var(--accent); }
.side-card img { border-radius: 10px; margin-bottom: 16px; }
.side-card p { font-size: .9rem; color: var(--text-weak); line-height: 1.7; }
.side-check-list { margin-top: 12px; }
.side-check-list li { display: flex; align-items: center; gap: 10px; font-size: .9rem; color: var(--text); padding: 6px 0; }
.side-check-list i { color: var(--accent); }
.side-links { display: flex; flex-direction: column; gap: 10px; }
.side-links a {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.side-links a:hover { background: var(--primary); color: #fff; transform: translateX(4px); border-color: var(--primary); }
.side-links a i { width: 22px; text-align: center; color: var(--accent); }
.side-links a:hover i { color: #fff; }
.side-posts { display: flex; flex-direction: column; }
.side-post-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-size: .88rem;
  transition: all var(--transition);
}
.side-post-link:last-child { border-bottom: none; }
.side-post-link:hover { padding-left: 8px; color: var(--primary); }
.side-post-title { font-weight: 500; line-height: 1.45; }
.side-post-date { color: var(--text-weak); font-size: .78rem; white-space: nowrap; }

/* 相关推荐 */
.related-section { padding: 60px 0; background: var(--bg); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-bottom: 32px; }
.section-head h2 { font-size: 1.7rem; font-weight: 800; color: var(--primary); }
.section-head p { color: var(--text-weak); font-size: .92rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.related-card-img-wrap { position: relative; overflow: hidden; aspect-ratio: 16/9; background: var(--bg-alt); }
.related-card-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-card-img-wrap img { transform: scale(1.06); }
.related-card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.related-card .badge { align-self: flex-start; margin-bottom: 10px; background: rgba(26,43,86,.08); color: var(--primary); border: none; font-size: .75rem; padding: 4px 12px; }
.related-card h3 { font-size: 1rem; font-weight: 700; line-height: 1.5; margin-bottom: 8px; color: var(--text); }
.related-card h3 a:hover { color: var(--primary); }
.related-card p { font-size: .85rem; color: var(--text-weak); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-meta { margin-top: auto; padding-top: 14px; display: flex; justify-content: space-between; align-items: center; font-size: .8rem; color: var(--text-weak); }

/* FAQ */
.faq-section { padding: 60px 0; background: var(--bg-alt); }
.faq-grid { max-width: 900px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--white);
  border-radius: 14px;
  border: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0,0,0,.04);
  padding: 22px 28px;
}
.faq-q { display: flex; align-items: center; gap: 14px; font-weight: 700; color: var(--primary); }
.faq-q i { color: var(--accent); font-size: 1.1rem; }
.faq-q span { flex: 1; }
.faq-a { margin-top: 12px; padding-left: 34px; color: var(--text-weak); line-height: 1.8; font-size: .95rem; }

/* CTA */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fff;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(232,163,61,.4), transparent 70%);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -80px; left: -40px;
  width: 240px; height: 240px;
  background: radial-gradient(circle, rgba(255,255,255,.12), transparent 70%);
}
.cta-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 16px; }
.cta-inner p { font-size: 1rem; color: rgba(255,255,255,.85); margin-bottom: 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta-note { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-top: 26px; font-size: .82rem; color: rgba(255,255,255,.7); }
.cta-note span { display: inline-flex; align-items: center; gap: 7px; }

/* Footer */
.site-footer { background: var(--primary); color: rgba(255,255,255,.8); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 32px; padding-bottom: 44px; }
.footer-brand-link { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.footer-brand-link .brand-dot { width: 34px; height: 34px; border-radius: 10px; }
.footer-brand-link p { margin-top: 12px; }
.footer-brand-link .footer-desc { margin-top: 14px; font-size: .88rem; color: rgba(255,255,255,.65); line-height: 1.8; }
.footer-col h4 { color: #fff; font-size: .95rem; font-weight: 700; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.footer-col h4::after { content: ""; position: absolute; bottom: 0; left: 0; width: 26px; height: 2px; background: var(--accent); border-radius: 2px; }
.footer-col a { display: block; padding: 5px 0; color: rgba(255,255,255,.7); font-size: .9rem; transition: all var(--transition); }
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-contact p { font-size: .88rem; color: rgba(255,255,255,.75); padding: 5px 0; display: flex; align-items: center; }
.footer-contact i { color: var(--accent); margin-right: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  text-align: center;
}
.footer-bottom p { margin: 0; }

/* 响应式 */
@media (max-width: 1024px) {
  .article-layout { flex-direction: column; }
  .article-sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; }
  .side-card { flex: 1; min-width: 280px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%);
    opacity: 0;
    visibility: hidden;
    transition: all .4s cubic-bezier(.4,0,.2,1);
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-link { padding: 12px 16px; font-size: 1rem; border-radius: 10px; }
  .nav-link::after { display: none; }
  .nav-link.active { background: rgba(26,43,86,.06); color: var(--primary); }
  .header-action .btn span { display: none; }
  .header-action .btn { padding: 8px 14px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .article-hero { padding: 60px 0 44px; }
  .article-card { padding: 28px 22px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .cta-section { padding: 50px 0; }
  .footer-bottom { flex-direction: column; gap: 6px; }
}
@media (max-width: 520px) {
  .header-inner { padding: 0 16px; }
  .brand-text { font-size: 1rem; }
  .brand-official { display: none; }
  .article-card { padding: 22px 16px; }
  .article-hero h1 { font-size: 1.35rem; }
  .article-hero-meta { flex-direction: column; gap: 8px; }
  .side-card { min-width: 100%; }
  .section-head h2 { font-size: 1.4rem; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  html { scroll-behavior: auto; }
}

/* roulang page: category1 */
:root{
  --primary:#6d5cff;
  --primary-dark:#5543e8;
  --primary-soft:#eeeaff;
  --accent:#ffb347;
  --dark:#0e1527;
  --dark-2:#1a2340;
  --bg:#f6f7fb;
  --card-bg:#ffffff;
  --text:#1e2742;
  --text-weak:#6b7280;
  --border:#e5e8f2;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(17,24,39,.06);
  --shadow-md:0 8px 24px rgba(17,24,39,.08);
  --shadow-lg:0 16px 40px rgba(17,24,39,.12);
  --transition:all .25s ease;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;transition:var(--transition);}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;border:none;background:none;cursor:pointer;}
a:focus-visible,button:focus-visible{outline:3px solid rgba(109,92,255,.4);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(17,24,39,.08);background:rgba(255,255,255,.95);}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-dot{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary),#8b5cf6);
  display:grid;place-items:center;color:#fff;font-size:15px;
  box-shadow:0 4px 12px rgba(109,92,255,.35);
}
.brand-text{font-weight:800;font-size:20px;letter-spacing:.5px;color:var(--dark);white-space:nowrap;}
.brand-official{
  font-size:12px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);padding:3px 10px;border-radius:999px;
  border:1px solid #ddd6ff;white-space:nowrap;
}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;padding:9px 16px;font-size:15px;font-weight:600;
  color:var(--text-weak);border-radius:999px;transition:var(--transition);
}
.nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-link.active{
  color:var(--primary);background:var(--primary-soft);
  box-shadow:inset 0 0 0 1px rgba(109,92,255,.2);
}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:10px;}
.nav-toggle .bar{width:22px;height:2px;background:var(--dark);border-radius:2px;transition:var(--transition);}
.header-action{display:flex;align-items:center;gap:10px;flex-shrink:0;}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;border-radius:999px;padding:12px 26px;font-size:15px;
  transition:var(--transition);border:none;cursor:pointer;line-height:1.4;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#7c5cff);color:#fff;
  box-shadow:0 6px 18px rgba(109,92,255,.32);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(109,92,255,.42);color:#fff;}
.btn-ghost{background:transparent;color:var(--dark);border:1.5px solid var(--border);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-light{background:#fff;color:var(--primary);box-shadow:0 6px 18px rgba(0,0,0,.14);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.2);color:var(--primary-dark);}
.btn-outline-light{background:transparent;border:1.5px solid rgba(255,255,255,.75);color:#fff;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff;transform:translateY(-2px);}

/* Hero */
.page-hero{
  position:relative;padding:104px 0 96px;text-align:center;color:#fff;
  background:linear-gradient(135deg,rgba(14,21,39,.94),rgba(30,41,82,.88)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::after{
  content:'';position:absolute;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,92,255,.35),transparent 70%);
  top:-160px;left:50%;transform:translateX(-50%);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  padding:7px 18px;border-radius:999px;font-size:13px;letter-spacing:2px;color:rgba(255,255,255,.9);
}
.breadcrumb{
  display:inline-flex;align-items:center;gap:10px;font-size:13.5px;
  color:rgba(255,255,255,.6);margin-bottom:14px;
}
.breadcrumb a{color:rgba(255,255,255,.85);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{opacity:.5;}
.page-hero h1{font-size:clamp(32px,4.5vw,50px);font-weight:800;line-height:1.25;margin:20px 0 16px;color:#fff;}
.hero-sub{max-width:720px;margin:0 auto 34px;color:rgba(255,255,255,.78);font-size:17px;line-height:1.8;}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.hero-stats{display:flex;justify-content:center;gap:52px;margin-top:56px;flex-wrap:wrap;}
.hero-stat strong{display:block;font-size:32px;font-weight:800;color:#fff;line-height:1.3;}
.hero-stat span{color:rgba(255,255,255,.65);font-size:14px;}

/* Sections */
.section{padding:90px 0;}
.section-alt{background:#fff;border-block:1px solid var(--border);}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px;}
.section-head .tag{
  display:inline-block;padding:6px 16px;background:var(--primary-soft);
  color:var(--primary);border-radius:999px;font-size:13px;font-weight:700;
  letter-spacing:1px;margin-bottom:16px;
}
.section-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;color:var(--dark);margin:0 0 12px;line-height:1.3;}
.section-head p{color:var(--text-weak);font-size:16px;margin:0;line-height:1.8;}

/* Guide cards */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.card{
  background:var(--card-bg);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow-sm);
  transition:var(--transition);display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:#d4ccff;}
.card-img{height:200px;overflow:hidden;position:relative;}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.card:hover .card-img img{transform:scale(1.06);}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.card-body .tag{align-self:flex-start;margin-bottom:12px;}
.card-body h3{font-size:18px;font-weight:700;color:var(--dark);margin:0 0 10px;line-height:1.4;}
.card-body p{color:var(--text-weak);font-size:14.5px;margin:0 0 18px;line-height:1.7;flex:1;}
.card-meta{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border);padding-top:14px;}

/* Tags & badges */
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);
}
.tag-light{background:rgba(255,255,255,.14);color:#fff;}
.card-link{font-weight:700;color:var(--primary);font-size:14px;}
.card-link i{transition:transform .25s ease;font-size:13px;}
.card-link:hover{color:var(--primary-dark);}
.card-link:hover i{transform:translateX(4px);}

/* List items */
.list-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.list-item{
  display:flex;gap:18px;align-items:flex-start;
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:var(--transition);
}
.list-item:hover{box-shadow:var(--shadow-md);transform:translateX(6px);border-color:#d8d2ff;}
.list-icon{
  width:48px;height:48px;flex:0 0 48px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;
  display:grid;place-items:center;font-size:18px;
  box-shadow:0 6px 16px rgba(109,92,255,.28);
}
.list-content h3{font-size:16.5px;margin:0 0 6px;color:var(--dark);}
.list-content p{font-size:14px;color:var(--text-weak);margin:0;line-height:1.7;}

/* Rating dark */
.rating-section{
  position:relative;color:#fff;
  background:linear-gradient(135deg,rgba(14,21,39,.97),rgba(30,41,82,.93)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.rating-section::before{
  content:'';position:absolute;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,92,255,.28),transparent 70%);
  bottom:-180px;right:-120px;pointer-events:none;
}
.rating-section .container{position:relative;z-index:2;}
.rating-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.rating-grid h2{
  color:#fff;font-size:clamp(24px,3vw,34px);font-weight:800;margin:14px 0 14px;line-height:1.3;
}
.rating-grid>div:first-child>p{color:rgba(255,255,255,.7);line-height:1.85;margin:0 0 28px;}
.rating-item{margin-bottom:26px;}
.rating-head{display:flex;justify-content:space-between;margin-bottom:9px;font-weight:600;font-size:14.5px;color:rgba(255,255,255,.92);}
.rating-head strong{color:#fff;}
.rating-bar{height:8px;background:rgba(255,255,255,.12);border-radius:999px;overflow:hidden;}
.rating-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),#a78bfa);width:0;transition:width 1s ease;}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 24px;transition:var(--transition);position:relative;
}
.step:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:#d4ccff;}
.step-num{
  width:44px;height:44px;border-radius:50%;
  background:linear-gradient(135deg,var(--primary),#8b5cf6);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:18px;margin-bottom:18px;
  box-shadow:0 8px 20px rgba(109,92,255,.3);
}
.step h3{font-size:17px;margin:0 0 10px;color:var(--dark);}
.step p{font-size:14px;color:var(--text-weak);line-height:1.7;margin:0;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.faq-item{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;transition:var(--transition);
}
.faq-item:hover{box-shadow:var(--shadow-md);border-color:#d8d2ff;transform:translateY(-3px);}
.faq-item h3{font-size:16px;color:var(--dark);margin:0 0 10px;display:flex;gap:10px;align-items:center;}
.faq-item h3 i{color:var(--primary);font-size:14px;}
.faq-item p{font-size:14.5px;color:var(--text-weak);margin:0;line-height:1.75;}

/* CTA */
.cta-banner{
  background:linear-gradient(135deg,#6d5cff 0%,#8b5cf6 55%,#a78bfa 100%);
  border-radius:28px;padding:64px 48px;text-align:center;color:#fff;
  position:relative;overflow:hidden;box-shadow:0 24px 60px rgba(109,92,255,.35);
}
.cta-banner::before{
  content:'';position:absolute;width:260px;height:260px;border-radius:50%;
  background:rgba(255,255,255,.08);top:-90px;right:-60px;
}
.cta-banner::after{
  content:'';position:absolute;width:180px;height:180px;border-radius:50%;
  background:rgba(255,255,255,.06);bottom:-70px;left:-40px;
}
.cta-banner h2{font-size:clamp(24px,3vw,34px);margin:0 0 14px;color:#fff;position:relative;z-index:2;}
.cta-banner p{
  color:rgba(255,255,255,.85);max-width:540px;margin:0 auto 30px;
  line-height:1.8;font-size:16px;position:relative;z-index:2;
}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2;}

/* Footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:64px 0 32px;margin-top:60px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand-link{display:flex;align-items:center;gap:10px;}
.footer-brand-link span:last-child{font-weight:800;font-size:17px;color:#fff;}
.footer-grid>div:first-child>p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.58);max-width:320px;}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 16px;font-weight:700;}
.footer-col a{
  display:block;padding:5px 0;color:rgba(255,255,255,.62);
  font-size:14px;transition:var(--transition);
}
.footer-col a:hover{color:#fff;padding-left:6px;}
.footer-contact p{font-size:14px;margin:0 0 6px;color:rgba(255,255,255,.62);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;padding-top:26px;font-size:13px;color:rgba(255,255,255,.42);}

/* Responsive */
@media (max-width:1024px){
  .guide-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .rating-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;top:72px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--border);padding:0 24px;
    flex-direction:column;align-items:stretch;gap:4px;
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:var(--transition);box-shadow:var(--shadow-lg);
  }
  .main-nav.open{max-height:400px;opacity:1;visibility:visible;padding-top:16px;padding-bottom:16px;}
  .nav-link{border-radius:10px;}
  .nav-link.active::after{display:none;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .page-hero{padding:76px 0 68px;}
  .guide-grid{grid-template-columns:1fr;}
  .list-wrap{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .hero-stats{gap:28px;margin-top:44px;}
  .cta-banner{padding:44px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}
@media (max-width:520px){
  .header-inner{height:64px;}
  .main-nav{top:64px;}
  .brand-text{font-size:17px;}
  .brand-official{display:none;}
  .header-action{display:none;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .hero-stat strong{font-size:26px;}
  .card-img{height:180px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(0,0,0,.05);
  --shadow-md: 0 8px 30px rgba(0,0,0,.08);
  --shadow-lg: 0 20px 50px rgba(79,70,229,.12);
  --space-section: clamp(70px, 8vw, 110px);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: inline-block; vertical-align: middle; }
a { text-decoration: none; color: inherit; transition: all .3s ease; }
ul, ol { list-style: none; }
button, input, select { font-family: inherit; }

.container-custom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section-pad { padding: var(--space-section) 0; }
.section-bg { background: var(--bg-light); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all .3s ease;
  line-height: 1.4;
}
.btn i { font-size: 14px; transition: transform .3s ease; }
.btn:hover i { transform: translateX(4px); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(79,70,229,.3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(79,70,229,.4); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 6px 20px rgba(0,0,0,.15); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,.2); }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-dot {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 14px rgba(79,70,229,.35);
}
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: .5px; }
.brand-official {
  font-size: 11px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 3px 12px;
  border-radius: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}
.main-nav { display: flex; gap: 8px; margin-left: auto; }
.nav-link {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  position: relative;
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 700; background: var(--primary-light); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 18px;
  right: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.header-action { margin-left: 8px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle .bar { width: 24px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all .3s ease; }

/* Hero */
.page-hero {
  position: relative;
  padding: clamp(70px, 10vw, 130px) 0 clamp(50px, 7vw, 90px);
  background: linear-gradient(rgba(30,27,75,.88), rgba(30,27,75,.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  color: #e0e7ff;
  margin-bottom: 24px;
}
.hero-eyebrow i { color: var(--accent); }
.page-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 22px;
  letter-spacing: -1px;
}
.page-hero h1 span { color: #fbbf24; }
.page-hero .hero-desc {
  font-size: 18px;
  color: rgba(255,255,255,.85);
  max-width: 680px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,.15);
}
.hero-feature { display: flex; align-items: center; gap: 10px; font-size: 15px; color: rgba(255,255,255,.9); }
.hero-feature i { color: #34d399; font-size: 18px; }

/* 下载方式 */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 50px;
}
.download-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  transition: all .35s ease;
  position: relative;
  overflow: hidden;
}
.download-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.download-card .card-icon {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin: 0 auto 24px;
}
.download-card:nth-child(1) .card-icon { background: linear-gradient(135deg, #6366f1, #4f46e5); box-shadow: 0 8px 24px rgba(79,70,229,.3); }
.download-card:nth-child(2) .card-icon { background: linear-gradient(135deg, #f59e0b, #f97316); box-shadow: 0 8px 24px rgba(245,158,11,.3); }
.download-card:nth-child(3) .card-icon { background: linear-gradient(135deg, #10b981, #059669); box-shadow: 0 8px 24px rgba(16,185,129,.3); }
.download-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.download-card p { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.download-card .tag-row { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }

.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
}
.tag-green { background: #ecfdf5; color: #059669; }
.tag-orange { background: #fffbeb; color: #d97706; }

/* 下载流程 */
.steps-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 50px;
  counter-reset: step;
}
.step-item {
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border-color);
  transition: all .3s ease;
}
.step-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 6px 16px rgba(79,70,229,.3);
}
.step-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: var(--text-muted); }

/* 对比区块 */
.compare-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 50px;
}
.compare-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 38px;
  border: 1px solid var(--border-color);
  transition: all .3s ease;
}
.compare-item:hover { box-shadow: var(--shadow-md); }
.compare-item.highlight { border: 2px solid var(--primary); box-shadow: var(--shadow-md); }
.compare-item h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.compare-item .compare-badge {
  font-size: 12px;
  background: var(--primary);
  color: #fff;
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 600;
}
.compare-item > p { color: var(--text-muted); margin-bottom: 22px; }
.compare-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 15px;
}
.compare-list li:last-child { border-bottom: none; }
.compare-list i { color: #10b981; margin-top: 5px; flex-shrink: 0; }
.compare-note { text-align: center; color: var(--text-muted); font-size: 14px; margin-top: 22px; }

/* 客户端区块 */
.client-section {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  margin-top: 60px;
  overflow: hidden;
  position: relative;
}
.client-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; align-items: center; padding: clamp(30px, 5vw, 70px); }
.client-text h2 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.client-text p { color: rgba(255,255,255,.85); margin-bottom: 28px; font-size: 16px; line-height: 1.8; }
.client-detail { display: flex; gap: 32px; flex-wrap: wrap; margin-bottom: 30px; }
.client-detail .detail-item .num { font-size: 28px; font-weight: 800; color: #fbbf24; }
.client-detail .detail-item .label { font-size: 14px; color: rgba(255,255,255,.7); }
.client-image img { border-radius: 16px; box-shadow: 0 20px 60px rgba(0,0,0,.3); width: 100%; max-height: 360px; object-fit: cover; }

/* 系统兼容 */
.sys-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 50px;
}
.sys-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all .3s ease;
}
.sys-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.sys-item i { font-size: 32px; color: var(--primary); margin-bottom: 14px; display: block; }
.sys-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.sys-item p { font-size: 13px; color: var(--text-muted); }

/* FAQ */
.faq-wrap {
  max-width: 860px;
  margin: 50px auto 0;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all .3s ease;
}
.faq-item:hover { border-color: #c7d2fe; box-shadow: var(--shadow-sm); }
.faq-item summary {
  padding: 24px 30px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text-main);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--primary);
  font-weight: 300;
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 30px 24px; color: var(--text-muted); font-size: 15px; line-height: 1.8; }

/* CTA */
.cta-box {
  position: relative;
  background: linear-gradient(135deg, #ee0979, #ff6a00);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 5vw, 64px) clamp(24px, 4vw, 56px);
  color: #fff;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
}
.cta-box h2 { font-size: clamp(26px, 3.5vw, 38px); font-weight: 800; margin-bottom: 12px; }
.cta-box p { font-size: 16px; opacity: .95; margin-bottom: 28px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 70px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-brand-link { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; color: #fff; font-size: 18px; font-weight: 700; }
.footer-brand-link .brand-dot { width: 34px; height: 34px; font-size: 14px; border-radius: 10px; }
.footer-grid p { font-size: 14px; line-height: 1.8; margin-bottom: 12px; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14px; color: #94a3b8; padding: 6px 0; }
.footer-col a:hover { color: var(--accent); transform: translateX(4px); }
.footer-contact p { display: flex; align-items: center; margin-bottom: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}

/* Number 数据 */
.data-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
}
.data-item {
  text-align: center;
  padding: 30px 20px;
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}
.data-item .num { font-size: 38px; font-weight: 800; color: var(--primary); font-family: 'Arial', sans-serif; }
.data-item .label { font-size: 14px; color: var(--text-muted); margin-top: 6px; }

/* 说明卡片 */
.note-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 50px;
  align-items: stretch;
}
.note-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px;
  transition: all .3s ease;
}
.note-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.note-card img { width: 100%; height: 190px; object-fit: cover; border-radius: var(--radius-md); margin-bottom: 20px; }
.note-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.note-card h3 i { color: var(--accent); }
.note-card p { color: var(--text-muted); font-size: 15px; line-height: 1.8; }

/* 移动端 */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .data-row { grid-template-columns: repeat(2, 1fr); }
  .sys-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-wrap { grid-template-columns: repeat(2, 1fr); }
  .client-inner { padding: 40px; }
}

@media (max-width: 768px) {
  .container-custom { padding: 0 20px; }
  .header-inner { padding: 0 20px; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    transition: all .35s ease;
    margin-left: 0;
    z-index: 999;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; }
  .nav-link { padding: 14px 20px; font-size: 16px; }
  .nav-link.active::after { display: none; }
  .header-action { display: none; }
  .download-grid { grid-template-columns: 1fr; }
  .compare-wrap { grid-template-columns: 1fr; }
  .note-cards { grid-template-columns: 1fr; }
  .client-inner { grid-template-columns: 1fr; }
  .client-image { margin-top: 10px; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .steps-wrap { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .data-row { grid-template-columns: 1fr 1fr; }
  .sys-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .brand-official { display: none; }
  .page-hero h1 { font-size: 30px; }
  .hero-features { gap: 14px; flex-direction: column; }
  .data-row { grid-template-columns: 1fr; }
  .sys-grid { grid-template-columns: 1fr; }
  .client-inner { padding: 28px 24px; }
  .btn { width: 100%; justify-content: center; }
}