/* roulang page: index */
:root {
    --primary: #3168F0;
    --primary-deep: #1E46B8;
    --primary-soft: #E9F1FE;
    --accent: #FF8A3D;
    --bg-main: #FFFFFF;
    --bg-alt: #F6F9FE;
    --bg-deep: #10203F;
    --text-title: #10203F;
    --text-body: #33425B;
    --text-muted: #64748B;
    --text-weak: #94A3B8;
    --border-light: #E3EBF5;
    --success: #10B981;
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --shadow-card: 0 1px 2px rgba(20,50,100,0.04), 0 8px 24px rgba(20,50,100,0.06);
    --shadow-hover: 0 16px 40px rgba(20,50,100,0.12);
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    background: var(--bg-main);
    color: var(--text-body);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; transition: color .2s ease, border-color .2s ease, box-shadow .3s ease, transform .3s ease; }
  button { cursor: pointer; border: none; background: none; font-family: inherit; }
  input { font-family: inherit; }

  ::selection { background: rgba(49,104,240,.15); color: var(--text-title); }

  .no-scrollbar::-webkit-scrollbar { display: none; }
  .no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

  .container-site {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
  }
  @media (min-width: 640px) {
    .container-site { padding-left: 1.5rem; padding-right: 1.5rem; }
  }
  @media (min-width: 1024px) {
    .container-site { padding-left: 2rem; padding-right: 2rem; }
  }

  .section-padding { padding-top: 56px; padding-bottom: 56px; }
  @media (min-width: 1024px) { .section-padding { padding-top: 96px; padding-bottom: 96px; } }

  .dock-nav {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: min(1100px, calc(100vw - 24px));
    background: rgba(255,255,255,.82);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(23,50,100,.08);
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(20,50,100,.08);
    z-index: 1000;
    transition: box-shadow .3s ease;
  }
  .dock-nav:hover { box-shadow: 0 12px 40px rgba(20,50,100,.12); }

  .nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-body);
    padding: 0 16px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    transition: all .2s ease;
  }
  .nav-link:hover { color: var(--primary); }
  .nav-link.active {
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-weight: 600;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 24px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: 12px;
    transition: all .25s ease;
  }
  .btn-primary:hover {
    background: var(--primary-deep);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(30,70,184,.25);
  }
  .btn-primary:active { transform: translateY(0); }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 24px;
    background: transparent;
    color: var(--primary);
    border: 1px solid rgba(49,104,240,.35);
    font-size: 14px;
    font-weight: 500;
    border-radius: 12px;
    transition: all .25s ease;
  }
  .btn-ghost:hover {
    background: var(--primary-soft);
    border-color: var(--primary);
  }

  .card-default {
    background: #fff;
    border: 1px solid rgba(23,50,100,.08);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
  }
  .card-default:hover {
    border-color: rgba(49,104,240,.40);
    box-shadow: var(--shadow-hover);
  }

  .badge-hot {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--accent);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 999px;
    letter-spacing: .5px;
  }

  .input-field {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--border-light);
    border-radius: 12px;
    background: #F9FAFB;
    font-size: 14px;
    color: var(--text-title);
    outline: none;
    transition: all .25s ease;
  }
  .input-field::placeholder { color: var(--text-weak); }
  .input-field:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(49,104,240,.15);
    background: #fff;
  }

  .faq-item {
    background: var(--bg-alt);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: background .2s ease;
  }
  .faq-item:hover { background: var(--primary-soft); }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    min-height: 48px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-title);
    cursor: pointer;
  }
  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    transition: transform .3s ease;
  }
  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-answer {
    padding: 0 20px 20px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-muted);
    display: none;
  }
  .faq-item.open .faq-answer { display: block; }

  .section-title-bar {
    width: 4px;
    height: 20px;
    background: var(--primary);
    border-radius: 999px;
    display: inline-block;
    vertical-align: -3px;
    margin-right: 10px;
  }

  .hero-gradient {
    background: linear-gradient(90deg, rgba(6,20,40,.85) 0%, rgba(6,20,40,.35) 50%, transparent 80%),
                linear-gradient(0deg, rgba(6,20,40,.5) 0%, transparent 40%);
  }

  .footer-link {
    color: rgba(255,255,255,.55);
    font-size: 14px;
    transition: color .2s ease;
  }
  .footer-link:hover { color: #fff; }

  .hover-lift { transition: transform .3s ease, box-shadow .3s ease; }
  .hover-lift:hover { transform: translateY(-4px); }

  .focus-visible:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
  }

  @media (max-width: 767px) {
    .hero-login-card-desktop { display: none; }
    .hero-login-btn-mobile { display: inline-flex; }
  }
  @media (min-width: 768px) {
    .hero-login-btn-mobile { display: none; }
  }

  .scroll-snap-x { scroll-snap-type: x mandatory; }
  .scroll-snap-start { scroll-snap-align: start; }

/* roulang page: category1 */
:root{
  --primary:#3168F0;--primary-deep:#1E46B8;--primary-soft:#E9F1FE;--accent:#FF8A3D;
  --bg-main:#FFFFFF;--bg-alt:#F6F9FE;--bg-deep:#10203F;
  --text-title:#10203F;--text-body:#33425B;--text-muted:#64748B;--text-weak:#94A3B8;
  --border-light:#E3EBF5;--success:#10B981;
  --shadow-card:0 1px 2px rgba(20,50,100,0.04),0 8px 24px rgba(20,50,100,0.06);
  --shadow-hover:0 16px 40px rgba(20,50,100,0.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;color:var(--text-body);background:var(--bg-main);font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:all .2s ease}
img{max-width:100%;display:block}
button,input{font-family:inherit}
.container-site{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media(max-width:640px){.container-site{padding-left:16px;padding-right:16px}}
.dock-nav{position:fixed;top:12px;left:50%;transform:translateX(-50%);width:min(1100px,calc(100vw - 24px));height:64px;background:rgba(255,255,255,.82);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(23,50,100,.08);border-radius:20px;box-shadow:0 8px 30px rgba(20,50,100,.08);display:flex;align-items:center;justify-content:space-between;padding:0 20px;z-index:100}
.nav-link{display:inline-flex;align-items:center;padding:0 16px;height:36px;border-radius:999px;font-size:14px;font-weight:500;color:var(--text-body);transition:all .2s ease;white-space:nowrap}
.nav-link:hover{color:var(--primary)}
.nav-link.active{background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.dock-search-btn{width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border-light);background:#fff;color:var(--text-muted);cursor:pointer;transition:all .2s ease}
.dock-search-btn:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 0 3px rgba(49,104,240,.12)}
.dock-login-btn{height:40px;padding:0 20px;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:500;display:inline-flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:all .25s ease;white-space:nowrap}
.dock-login-btn:hover{background:var(--primary-deep);transform:translateY(-1px)}
.dock-login-btn:active{transform:translateY(0);box-shadow:0 0 0 3px rgba(49,104,240,.2)}
.menu-btn{width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border-light);background:#fff;cursor:pointer;color:var(--text-title);transition:all .2s ease}
.menu-btn:hover{border-color:var(--primary);color:var(--primary)}
.mobile-menu{position:fixed;top:88px;left:12px;right:12px;background:#fff;border-radius:20px;box-shadow:0 20px 50px rgba(20,50,100,.15);border:1px solid var(--border-light);padding:20px;z-index:99;display:none}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 16px;border-radius:12px;font-size:15px;font-weight:500;color:var(--text-title);margin-bottom:4px}
.mobile-menu a:hover{background:var(--primary-soft);color:var(--primary-deep)}
.mobile-menu a.active{background:var(--primary-soft);color:var(--primary-deep);font-weight:600}
.mobile-menu .mobile-search{width:100%;height:44px;border-radius:12px;border:1px solid var(--border-light);padding:0 14px;font-size:14px;margin-bottom:12px;background:var(--bg-alt)}
.mobile-menu .mobile-search:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(49,104,240,.15)}
.search-pop{position:absolute;top:76px;right:84px;width:280px;background:#fff;border-radius:14px;box-shadow:0 16px 40px rgba(20,50,100,.13);border:1px solid var(--border-light);padding:12px;display:none;z-index:99}
.search-pop.open{display:block}
.search-pop input{width:100%;height:40px;border-radius:10px;border:1px solid var(--border-light);padding:0 12px;font-size:14px;background:var(--bg-alt)}
.search-pop input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(49,104,240,.15)}
.cat-page-hero{background:linear-gradient(135deg,#F0F5FF 0%,#E9F1FE 55%,#F6F9FE 100%);padding:72px 0 56px;position:relative;overflow:hidden;border-bottom:1px solid rgba(23,50,100,.05)}
.cat-page-hero::before{content:"";position:absolute;top:-80px;right:-100px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(49,104,240,.08),transparent 70%)}
.cat-page-hero::after{content:"";position:absolute;bottom:-60px;left:20%;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(255,138,61,.06),transparent 70%)}
.crumb{font-size:13px;color:var(--text-weak);display:flex;align-items:center;gap:8px;margin-bottom:28px}
.crumb a{color:var(--text-muted)}
.crumb a:hover{color:var(--primary)}
.crumb span.sep{color:var(--text-weak)}
.cat-title{font-size:clamp(32px,4vw,40px);line-height:1.25;font-weight:800;color:var(--text-title);letter-spacing:-.5px}
.cat-subtitle{font-size:15px;line-height:1.8;color:var(--text-muted);max-width:640px;margin-top:16px}
.cat-hero-cta{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 20px;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:500;margin-top:24px;transition:all .25s ease}
.cat-hero-cta:hover{background:var(--primary-deep);transform:translateY(-1px)}
.cat-hero-cta:active{transform:translateY(0)}
.cat-main{padding-top:64px;padding-bottom:72px}
.cat-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px}
@media(max-width:1024px){.cat-grid{grid-template-columns:1fr;gap:36px}}
.cat-body-text{font-size:15px;line-height:1.9;color:var(--text-body);margin-bottom:20px}
.cat-body-img{border-radius:16px;overflow:hidden;margin:24px 0;box-shadow:var(--shadow-card)}
.cat-body-img img{width:100%;height:auto;object-fit:cover}
.cat-points{list-style:none;margin-top:24px}
.cat-points li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;font-size:14px;line-height:1.7;color:var(--text-body)}
.cat-points li::before{content:"";width:20px;height:20px;border-radius:999px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%233168F0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}
.cat-sidebar{display:flex;flex-direction:column;gap:24px}
.login-tip-card{background:linear-gradient(135deg,#E9F1FE,#F6F9FE);border:1px solid rgba(49,104,240,.1);border-radius:20px;padding:28px}
.login-tip-card .tip-title{font-size:18px;font-weight:700;color:var(--text-title);margin-bottom:8px}
.login-tip-card .tip-desc{font-size:13px;line-height:1.75;color:var(--text-muted);margin-bottom:16px}
.login-tip-card .tip-btn{display:block;text-align:center;height:44px;border-radius:12px;background:var(--primary);color:#fff;font-size:14px;font-weight:500;line-height:44px;transition:all .25s ease}
.login-tip-card .tip-btn:hover{background:var(--primary-deep);transform:translateY(-1px)}
.login-tip-card .tip-btn:active{transform:translateY(0)}
.quick-links-card{background:#fff;border:1px solid var(--border-light);border-radius:20px;padding:28px;box-shadow:var(--shadow-card)}
.quick-links-card h3{font-size:16px;font-weight:700;color:var(--text-title);margin-bottom:4px}
.quick-links-card .ql-sub{font-size:12px;color:var(--text-weak);margin-bottom:16px}
.quick-links-card ul{list-style:none}
.quick-links-card ul li{border-bottom:1px solid rgba(23,50,100,.06)}
.quick-links-card ul li:last-child{border-bottom:none}
.quick-links-card ul li a{display:flex;align-items:center;justify-content:space-between;padding:11px 0;font-size:14px;color:var(--text-body);transition:all .2s ease}
.quick-links-card ul li a:hover{color:var(--primary);padding-left:6px}
.quick-links-card ul li a .arrow{color:var(--text-weak);font-size:12px;transition:all .2s ease}
.quick-links-card ul li a:hover .arrow{color:var(--primary);transform:translateX(3px)}
.index-section{padding:72px 0;background:var(--bg-alt)}
.index-section-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;flex-wrap:wrap}
.index-section-top h2{font-size:28px;font-weight:800;color:var(--text-title);line-height:1.3}
.index-section-top p{font-size:14px;color:var(--text-muted);max-width:560px}
.index-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:768px){.index-grid{grid-template-columns:1fr;gap:16px}}
.index-card{background:#fff;border-radius:16px;padding:24px;display:flex;gap:18px;align-items:flex-start;border:1px solid transparent;transition:all .3s ease;box-shadow:var(--shadow-card)}
.index-card:hover{border-color:rgba(49,104,240,.2);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.index-card .ic-img{width:96px;height:96px;border-radius:14px;overflow:hidden;flex-shrink:0;background:#E3EBF5}
.index-card .ic-img img{width:100%;height:100%;object-fit:cover}
.index-card .ic-body h3{font-size:16px;font-weight:600;color:var(--text-title);margin-bottom:6px}
.index-card .ic-body p{font-size:13px;line-height:1.7;color:var(--text-muted)}
.index-card .ic-body .ic-link{display:inline-flex;align-items:center;gap:4px;font-size:13px;font-weight:500;color:var(--primary);margin-top:10px}
.index-card .ic-body .ic-link:hover{gap:8px}
.cta-block{padding:72px 0}
.cta-inner{background:var(--bg-deep);border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
@media(max-width:640px){.cta-inner{padding:48px 24px}}
.cta-inner::before{content:"";position:absolute;top:-100px;right:-80px;width:300px;height:300px;border-radius:50%;background:rgba(49,104,240,.2);filter:blur(60px)}
.cta-inner::after{content:"";position:absolute;bottom:-100px;left:-80px;width:260px;height:260px;border-radius:50%;background:rgba(255,138,61,.12);filter:blur(60px)}
.cta-inner>div{position:relative;z-index:1}
.cta-inner h2{font-size:28px;font-weight:800;color:#fff;line-height:1.3;margin-bottom:12px}
.cta-inner p{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:32px;max-width:520px;margin-left:auto;margin-right:auto}
.cta-btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-btn-primary{height:48px;padding:0 32px;border-radius:999px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;display:inline-flex;align-items:center;gap:8px;transition:all .25s ease;border:none;cursor:pointer}
.cta-btn-primary:hover{background:#4c7df2;transform:translateY(-2px);box-shadow:0 8px 24px rgba(49,104,240,.35)}
.cta-btn-primary:active{transform:translateY(0)}
.cta-btn-ghost{height:48px;padding:0 32px;border-radius:999px;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:15px;font-weight:500;display:inline-flex;align-items:center;gap:8px;background:transparent;transition:all .25s ease;cursor:pointer}
.cta-btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.cta-btn-ghost:active{transform:translateY(0)}
.faq-section{padding:72px 0 80px}
.faq-container{max-width:800px;margin:0 auto}
.faq-title{text-align:center;font-size:28px;font-weight:800;color:var(--text-title);margin-bottom:40px}
.faq-item{background:var(--bg-alt);border-radius:12px;margin-bottom:12px;overflow:hidden;transition:background .2s ease}
.faq-item:hover{background:var(--primary-soft)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:56px;font-size:15px;font-weight:600;color:var(--text-title);transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{width:24px;height:24px;border-radius:999px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;transition:transform .25s ease}
.faq-item[open] summary .faq-icon{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 20px 20px;font-size:14px;line-height:1.8;color:var(--text-muted)}
.footer-link{font-size:13px;color:rgba(255,255,255,.6);transition:all .2s ease}
.footer-link:hover{color:#fff;padding-left:4px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(49,104,240,.15);color:var(--text-title)}

/* roulang page: article */
:root {
  --primary: #3168F0;
  --primary-deep: #1E46B8;
  --primary-soft: #E9F1FE;
  --accent: #FF8A3D;
  --bg-main: #FFFFFF;
  --bg-alt: #F6F9FE;
  --bg-deep: #10203F;
  --text-title: #10203F;
  --text-body: #33425B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border-light: #E3EBF5;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(23,50,100,0.04), 0 8px 24px rgba(23,50,100,0.06);
  --shadow-hover: 0 16px 40px rgba(23,50,100,0.12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; font-size: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}
.container-site {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 640px) {
  .container-site { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .container-site { padding-left: 2rem; padding-right: 2rem; }
}
.nav-link {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  transition: color .2s ease, background-color .2s ease;
}
.nav-link:hover { color: var(--primary); background-color: rgba(49,104,240,0.06); }
.nav-link.active { background-color: var(--primary-soft); color: var(--primary-deep); font-weight: 600; }
.mobile-nav-link {
  display: flex;
  align-items: center;
  height: 44px;
  padding: 0 14px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  transition: background-color .2s ease, color .2s ease;
}
.mobile-nav-link:hover { background-color: var(--primary-soft); color: var(--primary); }
.breadcrumb {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  padding: 12px 0;
}
.breadcrumb-sep { color: var(--text-light); margin: 0 4px; flex-shrink: 0; }
.breadcrumb-current { color: var(--text-muted); font-weight: 500; }
.breadcrumb a:hover { color: var(--primary); }
.article-head { padding: 48px 0 32px; }
@media (min-width: 768px) { .article-head { padding: 64px 0 40px; } }
.article-category {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.article-head h1 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-meta .dot { color: var(--text-light); }
.article-meta .meta-source { color: var(--primary); font-weight: 500; }
.article-wrap { padding-bottom: 40px; }
.article-body {
  max-width: 768px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
  word-wrap: break-word;
}
.article-body p { margin-bottom: 24px; }
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-title);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  border-radius: 2px;
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-title);
  margin: 32px 0 12px;
  line-height: 1.4;
}
.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-title);
  margin: 24px 0 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-soft);
  padding: 20px 24px;
  border-radius: 12px;
  margin: 28px 0;
  color: var(--text-body);
}
.article-body blockquote p { margin-bottom: 0; }
.article-body img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 28px 0;
  object-fit: cover;
  width: auto;
  height: auto;
}
.article-body ul { list-style: none; margin: 24px 0; padding: 0; }
.article-body ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
}
.article-body ul li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
}
.article-body ol { margin: 24px 0; padding-left: 24px; }
.article-body ol li { margin-bottom: 10px; padding-left: 4px; }
.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(49,104,240,0.3);
  transition: color .2s ease, border-color .2s ease;
}
.article-body a:hover { color: var(--primary-deep); border-bottom-color: var(--primary); }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}
.article-body th, .article-body td {
  border: 1px solid var(--border-light);
  padding: 10px 14px;
  text-align: left;
  line-height: 1.6;
}
.article-body th { background: var(--bg-alt); font-weight: 600; color: var(--text-title); }
.article-body figure { margin: 28px 0; }
.article-body figcaption { text-align: center; font-size: 14px; color: var(--text-muted); margin-top: 8px; }
.article-tags {
  max-width: 768px;
  margin: 0 auto;
  padding: 32px 0 8px;
  border-top: 1px solid var(--border-light);
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  background: var(--primary-soft);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 500;
  transition: background-color .2s ease, box-shadow .2s ease;
}
.tag:hover { background: rgba(49,104,240,0.15); box-shadow: 0 2px 8px rgba(49,104,240,0.1); }
.recommend-section { background: var(--bg-alt); padding: 64px 0; }
@media (min-width: 768px) { .recommend-section { padding: 80px 0; } }
.section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-title);
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::before {
  content: '';
  width: 4px;
  height: 22px;
  border-radius: 4px;
  background: var(--primary);
}
.recommend-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
  display: block;
  height: 100%;
}
.recommend-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(49,104,240,0.35);
  transform: translateY(-4px);
}
.recommend-card .card-img { aspect-ratio: 16/9; overflow: hidden; background: #E3EBF5; }
.recommend-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.recommend-card:hover .card-img img { transform: scale(1.04); }
.recommend-card .card-body { padding: 16px 18px 18px; }
.recommend-card .card-cat {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 6px;
}
.recommend-card .card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-title);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recommend-card .card-excerpt {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.recommend-card .card-meta {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.article-back { padding: 40px 0 56px; }
.article-back .inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  flex-wrap: wrap;
}
.back-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s ease;
}
.back-link:hover { color: var(--primary); }
.back-link svg { width: 16px; height: 16px; flex-shrink: 0; }
.login-cta {
  background: linear-gradient(120deg, var(--primary-soft) 0%, #DCE9FD 100%);
  border-radius: 24px;
  padding: 48px 32px;
  text-align: center;
  margin-bottom: 64px;
}
@media (min-width: 768px) { .login-cta { padding: 56px 48px; } }
.login-cta h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 12px;
}
.login-cta p {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.login-cta .cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  transition: background-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.btn-primary:hover { background: var(--primary-deep); box-shadow: 0 8px 24px rgba(49,104,240,0.25); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(49,104,240,0.2); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  background: #fff;
  color: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid rgba(49,104,240,0.35);
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.btn-ghost:hover { background: #fff; border-color: var(--primary); color: var(--primary-deep); transform: translateY(-1px); }
.article-empty {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 56px 24px;
}
.article-empty .icon {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: var(--bg-alt);
  border: 1px dashed var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--text-light);
  margin-bottom: 8px;
}
.article-empty h2 { font-size: 18px; font-weight: 600; color: var(--text-title); }
.article-empty p { font-size: 14px; color: var(--text-muted); }
.article-empty .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-pill);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: background-color .2s ease, transform .2s ease;
}
.article-empty .btn-back:hover { background: var(--primary-deep); transform: translateY(-1px); }
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
.footer-link {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  transition: color .2s ease;
}
.footer-link:hover { color: #fff; }