/* roulang page: index */
:root{
    --brand:#2A4C8B;
    --brand-deep:#1E3A70;
    --brand-active:#172C57;
    --brand-soft:#EAF0FA;
    --spark:#D99A3C;
    --bg:#F6F8FC;
    --card:#FFFFFF;
    --line:#E2E8F2;
    --ink:#1B2432;
    --sub:#5A6B84;
    --muted:#8A99AE;
    --radius-card:16px;
    --radius-cover:20px;
    --shadow-card:0 6px 24px rgba(27,36,50,.06);
    --shadow-lift:0 12px 32px rgba(27,36,50,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.78;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  .container-page{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.container-page{padding-left:32px;padding-right:32px}}

  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:6px;
  }

  .star-dots{
    background-image:radial-gradient(rgba(42,76,139,.6) 1px, transparent 1px);
    background-size:18px 18px;
    opacity:.08;
    pointer-events:none;
  }
  .star-dots-light{
    background-image:radial-gradient(rgba(255,255,255,.85) 1px, transparent 1px);
    background-size:20px 20px;
    opacity:.07;
    pointer-events:none;
  }

  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:68px;
    padding:0 14px;
    font-size:15px;
    color:var(--sub);
    transition:color .2s ease;
  }
  .nav-link:hover{color:var(--brand)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:0;
    height:2px;
    border-radius:2px;
    background:var(--brand);
  }

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;
    height:44px;padding:0 20px;border-radius:10px;
    background:var(--brand);color:#fff;
    font-size:15px;font-weight:600;
    transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
  }
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.22)}
  .btn-primary:active{background:var(--brand-active);transform:translateY(0);box-shadow:none}

  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;
    height:44px;padding:0 20px;border-radius:10px;
    background:#fff;color:var(--brand);
    border:1px solid var(--brand);
    font-size:15px;font-weight:600;
    transition:background .2s ease, transform .2s ease, box-shadow .2s ease;
  }
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.10)}
  .btn-ghost:active{transform:translateY(0);box-shadow:none}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand);
    font-weight:600;
    text-decoration:underline;
    text-decoration-thickness:2px;
    text-underline-offset:3px;
    transition:color .2s ease, text-decoration-thickness .2s ease;
  }
  .link-arrow:hover{color:var(--brand-deep);text-decoration-thickness:3px}

  .tag{
    display:inline-flex;align-items:center;
    height:24px;padding:0 10px;
    border-radius:999px;
    font-size:12px;font-weight:500;
    background:var(--brand-soft);
    color:var(--brand);
    white-space:nowrap;
  }
  .tag-spark{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 12px;
    border-radius:999px;
    font-size:12px;font-weight:600;
    background:#FBEFDC;
    color:#8A5A17;
    white-space:nowrap;
  }
  .tag-spark .dot{
    width:6px;height:6px;border-radius:50%;
    background:#C8871F;
    display:inline-block;
  }

  .num-badge{
    display:inline-flex;align-items:center;justify-content:center;
    width:28px;height:28px;
    border-radius:8px;
    border:1px solid rgba(217,154,60,.55);
    color:#B07B26;
    font-size:12px;font-weight:700;
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-variant-numeric:tabular-nums;
    flex:none;
  }

  .card{
    background:var(--card);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .card-lift:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}

  .entry-row{
    background:var(--card);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .entry-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}

  .thumb-frame{
    border-radius:12px;
    overflow:hidden;
    box-shadow:inset 0 0 0 1px rgba(27,36,50,.06);
  }
  .thumb-frame img{width:100%;height:100%;object-fit:cover}

  .anchor-pill{
    display:inline-flex;align-items:center;
    height:36px;padding:0 16px;
    border-radius:999px;
    background:#fff;
    border:1px solid var(--line);
    color:var(--sub);
    font-size:14px;
    white-space:nowrap;
    transition:color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
  }
  .anchor-pill:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}

  .faq-item{border-top:1px solid var(--line)}
  .faq-item:last-child{border-bottom:1px solid var(--line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0;
    font-size:16px;font-weight:600;color:var(--ink);
    cursor:pointer;
    list-style:none;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary .mark{
    flex:none;width:24px;height:24px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:8px;
    background:var(--brand-soft);color:var(--brand);
    font-size:16px;font-weight:600;line-height:1;
  }
  .faq-item[open] summary{color:var(--brand)}
  .faq-item[open] summary .mark{background:var(--brand);color:#fff}
  .faq-body{
    background:#FAFBFE;
    border-radius:12px;
    padding:20px;
    margin-bottom:20px;
    font-size:15px;
    line-height:26px;
    color:var(--sub);
  }

  .step-card{position:relative;background:#fff;border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px;transition:transform .2s ease, box-shadow .2s ease}
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}

  .mini-card{
    background:#fff;border-radius:12px;
    box-shadow:var(--shadow-card);
    padding:18px 20px;
    display:flex;gap:12px;align-items:flex-start;
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift)}
  .mini-card .mark-dot{
    flex:none;width:10px;height:10px;border-radius:50%;
    background:var(--spark);margin-top:9px;
    box-shadow:0 0 0 4px rgba(217,154,60,.16);
  }

  .footer-link{color:rgba(255,255,255,.72);font-size:14px;line-height:28px;transition:color .2s ease}
  .footer-link:hover{color:#fff}

  .field{
    height:44px;border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    padding:0 14px;
    font-size:14px;
    width:100%;
    transition:border-color .2s ease, box-shadow .2s ease;
  }
  .field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,76,139,.14)}
  .field:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

  .scroll-x{overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .scroll-x::-webkit-scrollbar{display:none}

  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

  @media (prefers-reduced-motion: reduce){
    *{transition:none !important;animation:none !important}
    .card-lift:hover,.entry-row:hover,.step-card:hover,.mini-card:hover,.anchor-pill:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  }

/* roulang page: category1 */
:root{
  --brand:#2A4C8B; --brand-deep:#1E3A70; --brand-active:#172C57; --brand-soft:#EAF0FA;
  --amber:#D99A3C; --amber-soft:#FDF3E2;
  --ink:#1B2432; --sub:#5A6B84; --weak:#8A99AE;
  --line:#E2E8F2; --surface:#F6F8FC; --white:#FFFFFF;
  --ok:#2F8F6B; --warn:#B96A32; --footer:#16233A;
  --r-card:16px; --r-big:20px; --r-btn:10px;
  --shadow:0 6px 24px rgba(27,36,50,.06);
  --shadow-hover:0 12px 32px rgba(27,36,50,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px; line-height:1.75; color:var(--ink); background:var(--surface);
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-page{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container-page{padding-left:32px;padding-right:32px}}

/* 导航 */
.nav-link{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;font-size:15px;font-weight:500;color:var(--sub);transition:color .2s ease}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--brand)}
.header-elevated{box-shadow:0 6px 20px rgba(27,36,50,.07)}

/* 按钮 */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(42,76,139,.18)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.24)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:#fff;border:1px solid var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-ghost:active{background:#DEE8F8;transform:translateY(0)}

/* 徽章 / 标签 */
.tag-spark{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;background:var(--amber-soft);color:#8A5A14;font-size:12px;font-weight:500;white-space:nowrap}
.tag-spark .dot{width:6px;height:6px;border-radius:999px;background:var(--amber);box-shadow:0 0 0 3px rgba(217,154,60,.16)}
.badge-cat{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:500;white-space:nowrap}
.badge-state{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;background:var(--amber-soft);color:#8A5A14;font-size:12px;font-weight:500;white-space:nowrap}
.badge-plain{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--sub);font-size:13px;font-variant-numeric:tabular-nums}

/* 筛选胶囊 */
.chip{display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--sub);font-size:14px;white-space:nowrap;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
.chip:hover{color:var(--brand);border-color:var(--brand)}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:500}

/* 合集目录卡 */
.cat-card{display:flex;flex-direction:column;background:#fff;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.cat-cover{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--brand-soft)}
.cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.cat-card:hover .cat-cover img{transform:scale(1.04)}
.cat-cover::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(226,232,242,.9);pointer-events:none}
.seq{position:absolute;left:12px;top:12px;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:#fff;border:1px solid var(--amber);color:#8A5A14;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
.cat-body{display:flex;flex-direction:column;gap:10px;padding:20px}

/* 精选条目行 */
.row-item{display:grid;grid-template-columns:160px 1fr;gap:20px;align-items:center;padding:16px;background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
.row-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.row-thumb{width:160px;height:100px;border-radius:12px;overflow:hidden;background:var(--brand-soft);position:relative}
.row-thumb img{width:100%;height:100%;object-fit:cover}
.row-thumb::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(226,232,242,.9);border-radius:12px}
.row-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;letter-spacing:.5px}
@media (max-width:520px){
  .row-item{grid-template-columns:1fr;gap:12px}
  .row-thumb{width:100%;height:170px}
}

/* FAQ */
.faq-item{border-top:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 2px;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;transition:color .2s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-mark{flex:none;display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:999px;border:1px solid var(--line);color:var(--brand);font-size:15px;line-height:1;transition:background-color .2s ease,border-color .2s ease}
.faq-item[open] .faq-mark{background:var(--brand-soft);border-color:var(--brand-soft)}
.faq-body{background:#FAFBFE;border-radius:12px;padding:18px 20px;margin:0 2px 18px;font-size:15px;line-height:26px;color:var(--sub)}

/* 表单 */
.field{width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--ink);font-size:14px;transition:border-color .2s ease,box-shadow .2s ease}
.field::placeholder{color:var(--weak)}
.field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(42,76,139,.18)}

/* 页脚 */
.footer-link{display:block;font-size:14px;line-height:28px;color:rgba(255,255,255,.65);transition:color .2s ease}
.footer-link:hover{color:#fff}

/* 装饰 */
.star-dots{background-image:radial-gradient(rgba(42,76,139,.9) 1px,transparent 1px);background-size:18px 18px;opacity:.08;pointer-events:none}
.star-dots-light{background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);background-size:20px 20px;opacity:.10;pointer-events:none}
.link-underline{color:var(--brand);font-weight:500;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:text-decoration-thickness .2s ease}
.link-underline:hover{text-decoration-thickness:2px}
.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}
.no-scrollbar::-webkit-scrollbar{display:none}
.meta-num{font-variant-numeric:tabular-nums}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
  .cat-card:hover,.row-item:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
  .cat-card:hover .cat-cover img{transform:none}
}

/* roulang page: category2 */
:root{
  --brand:#2A4C8B;
  --brand-deep:#1E3A70;
  --brand-dark:#172C57;
  --brand-soft:#EAF0FA;
  --spark:#D99A3C;
  --ink:#1B2432;
  --sub:#5A6B84;
  --mute:#8A99AE;
  --line:#E2E8F2;
  --surface:#F6F8FC;
  --card:#FFFFFF;
  --r-card:16px;
  --r-cover:20px;
  --r-btn:10px;
  --sh-card:0 6px 24px rgba(27,36,50,.06);
  --sh-lift:0 12px 32px rgba(27,36,50,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container-page{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container-page{padding-left:32px;padding-right:32px}}

/* 导航 */
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;color:var(--sub);transition:color .2s ease;
}
.nav-link:hover{color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand);border-radius:2px;
}
@media (max-width:1023px){.nav-link{height:auto;padding:14px 0;font-size:16px}}
.nav-link.is-active::after{}

/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  border:1px solid var(--brand);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary:hover{background:var(--brand-deep);border-color:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.22)}
.btn-primary:active{background:var(--brand-dark);border-color:var(--brand-dark);transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  background:#fff;color:var(--brand);font-size:15px;font-weight:600;
  border:1px solid var(--brand);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.12)}
.btn-ghost:active{transform:translateY(0);background:#DDE7F7}
.btn-onbrand{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.12);color:#fff;font-size:14px;font-weight:600;
  border:1px solid rgba(255,255,255,.38);
  transition:background .2s ease,border-color .2s ease;
}
.btn-onbrand:hover{background:rgba(255,255,255,.22);border-color:rgba(255,255,255,.6)}

/* 徽章与标签 */
.tag-spark{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:999px;background:#FBF1E1;border:1px solid #F1DEBF;
  color:#8A5A15;font-size:12px;font-weight:600;white-space:nowrap;
}
.tag-spark .dot{width:6px;height:6px;border-radius:999px;background:var(--spark);display:inline-block}
.tag-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:500;white-space:nowrap;
}
.tag-line{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--sub);font-size:12px;white-space:nowrap;
}
.num-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:8px;
  border:1px solid #EBCF9F;color:#9A6618;background:#FDF7EC;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
}

/* 表单 */
.field{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field::placeholder{color:var(--mute)}
.field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(42,76,139,.18)}

/* 筛选胶囊 */
.filter-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 12px;
  border-radius:999px;background:#fff;border:1px solid var(--line);
  color:var(--sub);font-size:13px;white-space:nowrap;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.filter-chip:hover{border-color:#C6D5EA;color:var(--brand);background:#FBFCFE}
.filter-chip.is-on{background:var(--brand-soft);border-color:#C7D7F0;color:var(--brand);font-weight:600}

/* 卡片 */
.card-hover{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card-hover:hover{transform:translateY(-2px);box-shadow:var(--sh-lift)}
.thumb{
  object-fit:cover;border-radius:12px;
  box-shadow:inset 0 0 0 1px rgba(27,36,50,.06);
  background:#EDF1F8;
}

/* 分页 */
.page-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 10px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--sub);
  font-size:14px;font-variant-numeric:tabular-nums;
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.page-num:hover{border-color:#C6D5EA;color:var(--brand)}
.page-num.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.page-num.is-disabled{color:var(--mute);background:#F2F5FA;border-color:#E9EEF7}

/* FAQ */
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-of-type{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;padding:18px 0;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;color:var(--brand);font-size:20px;line-height:1;font-weight:400;
  transform:translateY(2px);
}
.faq-item[open] summary::after{content:"−"}
.faq-body{
  background:#FAFBFE;border-radius:12px;padding:20px;margin-bottom:18px;
  font-size:15px;line-height:26px;color:var(--sub);
}

/* 页脚 */
.footer-link{display:block;font-size:14px;line-height:28px;color:rgba(255,255,255,.72);transition:color .2s ease,padding-left .2s ease}
.footer-link:hover{color:#fff;padding-left:2px}

/* 星点点阵（克制装饰） */
.star-dots{
  position:absolute;inset:0;pointer-events:none;opacity:.08;
  background-image:radial-gradient(circle at 2px 2px, #FFFFFF 1.5px, transparent 1.6px);
  background-size:22px 22px;
}
.star-dots--light{
  position:absolute;inset:0;pointer-events:none;opacity:.07;
  background-image:radial-gradient(circle at 2px 2px, #2A4C8B 1.5px, transparent 1.6px);
  background-size:24px 24px;
}
@media (max-width:767px){.star-dots,.star-dots--light{display:none}}

@media (prefers-reduced-motion: reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .card-hover:hover,.btn-primary:hover,.btn-ghost:hover{transform:none}
}

/* roulang page: article */
:root{
    --brand:#2A4C8B; --brand-deep:#1E3A70; --brand-dark:#172C57; --brand-soft:#EAF0FA;
    --amber:#D99A3C; --ink:#1B2432; --sub:#5A6B84; --weak:#8A99AE;
    --line:#E2E8F2; --surface:#F6F8FC; --footer:#16233A;
    --radius:16px; --shadow:0 6px 24px rgba(27,36,50,.06); --shadow-hover:0 12px 32px rgba(27,36,50,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Noto Sans SC','Microsoft YaHei',sans-serif;
    background:var(--surface);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease}
  button,input{font:inherit;color:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container-page{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){ .container-page{padding-left:32px;padding-right:32px} }

  /* 导航 */
  #siteHeader{transition:box-shadow .2s ease,background-color .2s ease}
  #siteHeader.is-scrolled{box-shadow:0 6px 24px rgba(27,36,50,.08)}
  .nav-link{position:relative;display:inline-flex;align-items:center;height:68px;padding:0 16px;font-size:15px;font-weight:500;color:var(--sub);transition:color .2s ease}
  .nav-link:hover{color:var(--brand)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{content:'';position:absolute;left:16px;right:16px;bottom:0;height:2px;border-radius:2px;background:var(--brand)}
  .drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;font-size:15px;color:var(--sub);border-bottom:1px solid var(--line);font-weight:500}
  .drawer-link:hover,.drawer-link.is-active{color:var(--brand)}

  /* 按钮 */
  .btn-primary,.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    height:44px;padding:0 20px;border-radius:10px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;
    transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(42,76,139,.22);color:#fff}
  .btn-primary:active{background:var(--brand-dark);transform:translateY(0);box-shadow:none}
  .btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand)}
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);color:var(--brand)}
  .btn-ghost:active{background:#DDE8F8;transform:translateY(0)}

  /* 徽章 / 标签 */
  .badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.2px}
  .badge-cat{background:var(--brand-soft);color:var(--brand)}
  .badge-status{background:var(--amber-soft,#FBF1E1);color:#7A5316}
  .tag-spark{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:999px;background:#FBF1E1;color:#7A5316;font-size:12px;font-weight:500}
  .tag-spark .dot{width:6px;height:6px;border-radius:50%;background:var(--amber)}

  /* 卡片 */
  .card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
  .card-hover:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
  .card-line{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}

  /* 星点点阵装饰 */
  .star-dots{
    background-image:radial-gradient(rgba(42,76,139,.16) 1px, transparent 1px);
    background-size:18px 18px;
  }

  /* 正文排版 */
  .prose-cn{max-width:760px;font-size:16px;line-height:1.8;color:var(--ink);word-break:break-word}
  .prose-cn > *:first-child{margin-top:0}
  .prose-cn > * + *{margin-top:1em}
  .prose-cn p{margin:0}
  .prose-cn h2{
    position:relative;margin:2em 0 .7em;padding-left:14px;
    font-size:22px;line-height:1.5;font-weight:700;color:var(--ink);
  }
  .prose-cn h2::before{content:'';position:absolute;left:0;top:.35em;bottom:.35em;width:4px;border-radius:2px;background:var(--brand)}
  .prose-cn h3{margin:1.6em 0 .5em;font-size:19px;line-height:1.6;font-weight:600;color:var(--ink)}
  .prose-cn h4{margin:1.4em 0 .4em;font-size:16px;font-weight:600;color:var(--ink)}
  .prose-cn a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
  .prose-cn a:hover{text-decoration-thickness:2px}
  .prose-cn strong{font-weight:600;color:#101826}
  .prose-cn ul,.prose-cn ol{margin:1em 0;padding-left:1.35em}
  .prose-cn li{margin:.4em 0}
  .prose-cn ul > li{list-style:disc}
  .prose-cn ol > li{list-style:decimal}
  .prose-cn li::marker{color:var(--brand)}
  .prose-cn blockquote{
    margin:1.4em 0;padding:16px 20px;background:#F2F6FD;border-left:3px solid var(--brand);
    border-radius:0 10px 10px 0;color:#3B4A61;
  }
  .prose-cn blockquote > * + *{margin-top:.6em}
  .prose-cn img{border-radius:12px;margin:1.4em auto;box-shadow:0 6px 20px rgba(27,36,50,.08)}
  .prose-cn figure{margin:1.4em 0}
  .prose-cn figcaption{margin-top:8px;text-align:center;font-size:13px;line-height:1.7;color:var(--weak)}
  .prose-cn table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
  .prose-cn th,.prose-cn td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
  .prose-cn th{font-weight:600;color:var(--sub);background:#FAFBFE}
  .prose-cn hr{margin:2em 0;border:0;border-top:1px solid var(--line)}
  .prose-cn code{padding:2px 6px;border-radius:6px;background:var(--brand-soft);font-size:14;font-family:'SFMono-Regular',Consolas,monospace}
  .prose-cn pre{margin:1.4em 0;padding:16px 18px;border-radius:12px;background:#0F1B2D;color:#E7EEF9;overflow-x:auto;font-size:14px;line-height:1.7}
  .prose-cn pre code{padding:0;background:transparent;color:inherit;font-size:14px}

  /* 侧栏目录 */
  .toc-link{display:block;padding:7px 12px;border-radius:8px;font-size:14px;line-height:1.6;color:var(--sub);border-left:2px solid transparent;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
  .toc-link:hover{color:var(--brand);background:var(--brand-soft)}
  .toc-link.is-current{color:var(--brand);background:var(--brand-soft);border-left-color:var(--brand);font-weight:600}

  /* 表单 */
  .field{width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}
  .field::placeholder{color:var(--weak)}
  .field:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,76,139,.12)}

  .footer-link{display:inline-block;padding:5px 0;font-size:14px;line-height:1.6;color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease}
  .footer-link:hover{color:#fff;transform:translateX(2px)}

  .link-underline{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
  .link-underline:hover{text-decoration-thickness:2px}

  .num-badge{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid var(--amber);border-radius:8px;color:var(--amber);font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}

  .meta-num{font-variant-numeric:tabular-nums}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto}
    *{transition-duration:0.01ms !important;animation-duration:0.01ms !important}
    .card-hover:hover,.btn-primary:hover,.btn-ghost:hover,.footer-link:hover{transform:none}
  }