/* roulang page: index */
:root{
    --bg-root:#060e19;
    --bg-layer:#0b1626;
    --cyan:#38e0ff;
    --cyan-bright:#62eaff;
    --blue-glow:#6c8cff;
    --purple-glow:#8a76ff;
    --amber:#ffc857;
    --text-main:#f1f6fd;
    --text-sub:#9daabf;
    --text-faint:#6b7a93;
    --glass-bg:rgba(255,255,255,0.045);
    --glass-border:rgba(148,163,184,0.18);
    --glass-blur:blur(14px) saturate(140%);
    --radius-lg:24px;
    --radius-md:16px;
    --radius-sm:12px;
    --shadow-card:0 18px 50px rgba(0,0,0,0.25);
    --glow-cyan:0 0 24px rgba(56,224,255,0.25);
  }

  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    background-color:var(--bg-root);
    background-image:radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size:22px 22px;
    color:var(--text-main);
    font-family:'PingFang SC','HarmonicOS Sans','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;transition:color .2s ease;}
  img{max-width:100%;height:auto;display:block}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:1.25rem;padding-right:1.25rem}
  @media(min-width:640px){.container{max-width:680px}}
  @media(min-width:768px){.container{max-width:760px}}
  @media(min-width:1024px){.container{max-width:1024px}}
  @media(min-width:1280px){.container{max-width:1200px}}

  .glass-card{
    background:var(--glass-bg);
    border:1px solid var(--glass-border);
    backdrop-filter:var(--glass-blur);
    -webkit-backdrop-filter:var(--glass-blur);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
    position:relative;
    overflow:hidden;
  }
  .glass-card::before{
    content:'';
    position:absolute;
    inset:0 0 auto 0;
    height:1px;
    background:rgba(255,255,255,0.10);
    pointer-events:none;
  }
  .glass-panel{
    background:rgba(255,255,255,0.045);
    border:1px solid rgba(148,163,184,0.18);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-radius:16px;
    box-shadow:0 18px 50px rgba(0,0,0,0.25);
    position:relative;
    overflow:hidden;
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:.5rem;
    padding:.75rem 1.5rem;
    border-radius:12px;
    color:#06121a;
    font-weight:700;
    font-size:1rem;
    line-height:1.2;
    background:linear-gradient(135deg,#62eaff 0%,#38e0ff 55%,#1fb8d9 100%);
    box-shadow:0 0 20px rgba(56,224,255,0.28),0 8px 24px rgba(0,0,0,0.3);
    transition:all .2s ease;
    border:none;
    cursor:pointer;
    min-height:44px;
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 0 30px rgba(56,224,255,0.42),0 12px 30px rgba(0,0,0,0.4);
  }
  .btn-primary:active{
    transform:translateY(1px);
    box-shadow:0 0 14px rgba(56,224,255,0.30),0 4px 16px rgba(0,0,0,0.3);
  }
  .btn-primary:focus-visible{
    outline:2px solid #38e0ff;
    outline-offset:3px;
  }

  .btn-second{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:.5rem;
    padding:.75rem 1.5rem;
    border-radius:12px;
    color:var(--text-main);
    font-weight:600;
    font-size:1rem;
    background:rgba(255,255,255,0.06);
    border:1px solid rgba(148,163,184,0.35);
    backdrop-filter:blur(10px);
    cursor:pointer;
    transition:all .2s ease;
    min-height:44px;
  }
  .btn-second:hover{
    background:rgba(255,255,255,0.12);
    border-color:rgba(56,224,255,0.55);
    transform:translateY(-2px);
  }
  .btn-second:active{transform:translateY(1px)}
  .btn-second:focus-visible{
    outline:2px solid #38e0ff;
    outline-offset:3px;
  }

  .chip{
    display:inline-flex;
    align-items:center;
    padding:.4rem 1rem;
    border-radius:999px;
    font-size:.875rem;
    background:rgba(255,255,255,0.06);
    border:1px solid rgba(148,163,184,0.22);
    color:var(--text-sub);
    cursor:pointer;
    transition:all .2s ease;
    user-select:none;
  }
  .chip:hover{border-color:rgba(56,224,255,0.5);color:#fff};
  .chip.active,.chip[aria-selected="true"]{
    border-color:rgba(56,224,255,0.8);
    color:#fff;
    background:rgba(56,224,255,0.08);
    box-shadow:0 0 16px rgba(56,224,255,0.15);
  }
  .tag{
    display:inline-flex;
    align-items:center;
    gap:.25rem;
    padding:.15rem .7rem;
    border-radius:999px;
    font-size:.75rem;
    font-weight:600;
    letter-spacing:.06em;
  }
  .tag-cyan{background:rgba(56,224,255,0.1);color:#62eaff;border:1px solid rgba(56,224,255,0.3)}
  .tag-amber{background:rgba(255,200,87,0.12);color:#ffc857;border:1px solid rgba(255,200,87,0.3)}
  .tag-blue{background:rgba(108,140,255,0.12);color:#8a9fff;border:1px solid rgba(108,140,255,0.3)}

  .section-label{
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    font-size:.8rem;
    font-weight:600;
    letter-spacing:.15em;
    color:var(--cyan-bright);
    text-transform:none;
    margin-bottom:.85rem;
  }
  .section-label::before{
    content:'';
    display:inline-block;
    width:20px;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--cyan),rgba(56,224,255,0.15));
  }
  .hero-grid-bg{
    background-image:linear-gradient(180deg,rgba(6,14,25,0.55) 20%, rgba(6,14,25,0.85) 100%);
  }
  .text-glow{
    text-shadow:0 0 30px rgba(56,224,255,0.25);
  }
  .card-hover{
    transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  }
  .card-hover:hover{
    transform:translateY(-2px);
    border-color:rgba(56,224,255,0.5);
    box-shadow:0 0 22px rgba(56,224,255,0.12),0 18px 40px rgba(0,0,0,0.35);
  }
  .countdown-num{
    font-variant-numeric:tabular-nums;
    font-size:clamp(2rem,4vw,3.2rem);
    font-weight:800;
    line-height:1.1;
    color:#eaf7ff;
    text-shadow:0 0 18px rgba(56,224,255,0.2);
  }
  .input-field{
    width:100%;
    padding:.85rem 1rem;
    border-radius:12px;
    background:rgba(6,14,25,0.6);
    border:1px solid rgba(148,163,184,0.25);
    color:var(--text-main);
    font-size:1rem;
    outline:none;
    transition:border-color .2s,box-shadow .2s;
  }
  .input-field::placeholder{color:#5a6a82}
  .input-field:focus{
    border-color:var(--cyan);
    box-shadow:0 0 0 3px rgba(56,224,255,0.12);
  }
  details summary{
    cursor:pointer;
  }
  details summary::-webkit-details-marker{
    display:none;
  }
  .faq-item[open]{
    border-color:rgba(56,224,255,0.45);
    box-shadow:0 0 18px rgba(56,224,255,0.08);
  }
  .faq-plus{transition:transform .3s ease}
  details[open] .faq-plus{transform:rotate(45deg)}
  .body-link{color:var(--cyan-bright); text-decoration:underline; text-underline-offset:3px}
  .body-link:hover{color:#9ff1ff}
  .active-nav{
    background:rgba(56,224,255,0.1);
    border:1px solid rgba(56,224,255,0.25);
    border-radius:999px;
    color:#fff;
  }
  .nav-link{
    padding:.5rem 1.1rem;
    border-radius:999px;
    color:var(--text-sub);
    font-weight:500;
    transition:all .2s ease;
  }
  .nav-link:hover{
    background:rgba(255,255,255,0.06);
    color:#fff;
  }
  .footer-link{
    color:var(--text-sub);
    font-size:.9rem;
    transition:color .2s ease;
  }
  .footer-link:hover{color:var(--cyan-bright)}

  .badge-dot{width:8px;height:8px;border-radius:50%;display:inline-block}
  .small-card{
    border-radius:16px;
    overflow:hidden;
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(148,163,184,0.14);
    transition:all .2s ease;
  }
  .small-card:hover{
    border-color:rgba(56,224,255,0.4);
    transform:translateY(-2px);
  }
  .aside-sticky{position:sticky;top:110px;}
  .timeline-node::before{
    content:'';
    position:absolute;
    left:18px;
    top:36px;
    bottom:-12px;
    width:1px;
    background:linear-gradient(to bottom,rgba(56,224,255,0.3),rgba(56,224,255,0.02));
  }
  .timeline-node:last-child::before{display:none}

  .cover-fallback{
    background:linear-gradient(135deg,rgba(35,48,78,0.6),rgba(12,24,45,0.7));
  }
  @media (max-width: 780px){
    .nav-desktop{display:none}
    .nav-mobile-toggle{display:flex}
    .mobile-menu-open{display:block}
  }
  @media (min-width:781px){
    .nav-desktop{display:flex}
    .nav-mobile-toggle{display:none}
    .mobile-menu-open{display:none}
  }
  .tabular-nums{font-variant-numeric:tabular-nums}

/* roulang page: article */
:root {
  --bg: #060e19;
  --bg-soft: #0b1626;
  --cyan: #38e0ff;
  --cyan-bright: #62eaff;
  --blue-violet: #6c8cff;
  --amber: #ffc857;
  --text: #f1f6fd;
  --text-dim: #9daabf;
  --text-faint: #6b7a93;
  --border: rgba(148,163,184,0.18);
  --glass-bg: rgba(255,255,255,0.045);
  --glass-highlight: rgba(255,255,255,0.1);
  --radius-xl: 24px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-deep: 0 18px 50px rgba(0,0,0,0.28);
  --font-sans: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    radial-gradient(ellipse at 50% -10%, rgba(56,224,255,0.09), transparent 55%),
    linear-gradient(180deg, #081323 0%, #060e19 40%);
  background-size: 22px 22px, 100% 100%, 100% 100%;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-dim);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button,
input {
  font-family: inherit;
}

::selection {
  background: rgba(56,224,255,0.22);
  color: #f4fcff;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.3rem;
  padding-right: 1.3rem;
}

.readable {
  max-width: 46rem;
  width: 100%;
}

.glass-panel,
.glass-card {
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(148,163,184,0.18);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-radius: var(--radius-md);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), var(--shadow-deep);
}

.scroll-target {
  scroll-margin-top: 100px;
}

.nav-link {
  position: relative;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  color: #b7c3d9;
  transition: all 0.2s ease;
}

.nav-link:hover {
  background: rgba(255,255,255,0.06);
  color: #ffffff;
}

.active-nav {
  color: #ffffff;
  background: rgba(56,224,255,0.13);
  box-shadow: inset 0 0 0 1px rgba(56,224,255,0.16);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(148,163,184,0.18);
  background: rgba(255,255,255,0.05);
  border-radius: 14px;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease;
}

.nav-mobile-toggle:hover {
  border-color: rgba(56,224,255,0.45);
  background: rgba(56,224,255,0.1);
}

.logo-title {
  font-size: clamp(0.93rem, 2.5vw, 1.05rem);
  line-height: 1.3;
  white-space: nowrap;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  color: #041620;
  background: linear-gradient(135deg, #4ad5f5 0%, #38e0ff 60%, #75ecff 100%);
  box-shadow: 0 10px 30px rgba(56,224,255,0.2), 0 0 0 1px rgba(56,224,255,0.12);
  min-height: 44px;
  padding: 0.6rem 1.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(56,224,255,0.28), 0 0 0 1px rgba(56,224,255,0.24);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 6px 18px rgba(56,224,255,0.18);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.nav-link:focus-visible {
  outline: 2px solid rgba(56,224,255,0.9);
  outline-offset: 3px;
}

.btn-secondary {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(148,163,184,0.22);
  color: #e8eef7;
  min-height: 44px;
  padding: 0.55rem 1.35rem;
}

.btn-secondary:hover {
  border-color: rgba(56,224,255,0.5);
  background: rgba(56,224,255,0.08);
  color: #ffffff;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: #6f7f99;
}

.breadcrumb a:hover {
  color: #38e0ff;
}

.breadcrumb-sep {
  color: #3d4b63;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.38rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(56,224,255,0.22);
  background: rgba(56,224,255,0.08);
  color: #a4eaff;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.article-title {
  color: var(--text);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0;
  word-break: break-word;
}

.article-body {
  background: rgba(10,20,35,0.6);
  border: 1px solid rgba(148,163,184,0.15);
  border-radius: 26px;
  padding: clamp(1.3rem, 4vw, 2.8rem);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), var(--shadow-deep);
}

.article-body p {
  margin: 0 0 1.5rem;
  font-size: 1.02rem;
  line-height: 1.9;
  color: #ccd7e7;
}

.article-body h2 {
  margin: 3rem 0 1.25rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.45;
}

.article-body h3 {
  margin: 2.2rem 0 0.9rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: #e4eef9;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.5rem;
  padding-left: 1.5rem;
  color: #ccd7e7;
}

.article-body li {
  margin-bottom: 0.45rem;
  line-height: 1.8;
}

.article-body a {
  color: #6ee6ff;
  text-decoration: underline;
  text-decoration-color: rgba(56,224,255,0.4);
  text-underline-offset: 4px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

.article-body a:hover {
  color: #aef2ff;
  text-decoration-color: #38e0ff;
}

.article-body blockquote {
  margin: 2rem 0;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid rgba(56,224,255,0.6);
  background: rgba(56,224,255,0.06);
  border-radius: 0 16px 16px 0;
  color: #d2e3f2;
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body strong {
  color: #f2f7fd;
  font-weight: 700;
}

.article-body img {
  margin: 2rem 0;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(56,224,255,0.12), rgba(108,140,255,0.08));
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.92rem;
}

.article-body th,
.article-body td {
  border: 1px solid rgba(148,163,184,0.2);
  padding: 0.75rem 1rem;
  text-align: left;
}

.article-body th {
  background: rgba(56,224,255,0.08);
  color: #ffffff;
  font-weight: 700;
}

.article-body td {
  color: #b8c7db;
}

.article-body hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,224,255,0.35), transparent);
  margin: 2.5rem 0;
}

.article-meta-dot {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: #38e0ff;
  box-shadow: 0 0 8px rgba(56,224,255,0.6);
}

.article-footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.18);
  background: rgba(255,255,255,0.04);
  color: #b6c6de;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.article-footer-link:hover {
  border-color: rgba(56,224,255,0.4);
  background: rgba(56,224,255,0.08);
  color: #ffffff;
}

.entry-card {
  display: block;
  background: rgba(255,255,255,0.045);
  border: 1px solid rgba(148,163,184,0.18);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.entry-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56,224,255,0.45);
  box-shadow: 0 16px 40px rgba(0,0,0,0.28), 0 0 0 1px rgba(56,224,255,0.12);
}

.entry-card-img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(56,224,255,0.1), rgba(108,140,255,0.05));
}

.entry-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.entry-card:hover .entry-card-img img {
  transform: scale(1.04);
}

.form-input {
  width: 100%;
  min-height: 48px;
  padding: 0.7rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(148,163,184,0.22);
  background: rgba(6,14,25,0.65);
  color: #e9f1fc;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input::placeholder {
  color: #586b88;
}

.form-input:focus {
  border-color: rgba(56,224,255,0.75);
  box-shadow: 0 0 0 4px rgba(56,224,255,0.1);
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239daabf' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2.4rem;
}

.check-card {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  border: 1px solid rgba(148,163,184,0.18);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  padding: 0.5rem 1rem;
  font-size: 0.88rem;
  color: #c2d0e4;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.check-card:hover {
  border-color: rgba(56,224,255,0.35);
  color: #ffffff;
}

.check-card input {
  accent-color: #38e0ff;
}

.footer-link {
  color: #6b7a93;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: #d8e5f5;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }

  .nav-mobile-toggle {
    display: none;
  }
}

@media (max-width: 760px) {
  .container {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }

  .article-body {
    padding: 1.4rem;
  }

  .article-body table {
    display: block;
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .article-title {
    font-size: 1.55rem;
  }
}

/* roulang page: category1 */
:root {
        --bg-deep: #060e19;
        --bg-panel: #0b1626;
        --bg-soft: #0e1a2b;
        --cyan: #38e0ff;
        --cyan-bright: #62eaff;
        --blue: #6c8cff;
        --violet: #8a76ff;
        --amber: #ffc857;
        --text-main: #f1f6fd;
        --text-sub: #9daabf;
        --text-weak: #6b7a93;
        --border-glass: rgba(148, 163, 184, 0.18);
        --glass-bg: rgba(255, 255, 255, 0.045);
        --radius-lg: 24px;
        --radius-md: 16px;
        --radius-sm: 12px;
        --shadow-card: 0 18px 50px rgba(0, 0, 0, 0.25);
        --glow-cyan: rgba(56, 224, 255, 0.22);
        --font-cn: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      }

      *,
      *::before,
      *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }

      html {
        scroll-behavior: smooth;
        scroll-padding-top: 110px;
      }

      body {
        min-height: 100%;
        background-color: var(--bg-deep);
        color: var(--text-main);
        font-family: var(--font-cn);
        font-size: 16px;
        line-height: 1.8;
        -webkit-font-smoothing: antialiased;
      }

      body::before {
        content: "";
        position: fixed;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
        background-size: 22px 22px;
      }

      img {
        display: block;
        max-width: 100%;
        height: auto;
      }

      a {
        color: inherit;
        text-decoration: none;
      }

      button,
      input,
      summary {
        font: inherit;
      }

      a:focus-visible,
      button:focus-visible,
      summary:focus-visible,
      input:focus-visible {
        outline: 2px solid var(--cyan);
        outline-offset: 3px;
        border-radius: 6px;
      }

      .glass-panel,
      .glass-c {
        background: var(--glass-bg);
        border: 1px solid var(--border-glass);
        backdrop-filter: blur(14px) saturate(140%);
        -webkit-backdrop-filter: blur(14px) saturate(140%);
        box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255, 255, 255, 0.08);
      }

      .glass-main {
        background: rgba(11, 22, 38, 0.72);
        border: 1px solid rgba(148, 163, 184, 0.15);
        backdrop-filter: blur(18px) saturate(150%);
        -webkit-backdrop-filter: blur(18px) saturate(150%);
        box-shadow: 0 22px 70px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
      }

      .nav-desktop {
        display: none;
      }

      .nav-mobile-toggle {
        display: inline-flex;
      }

      @media (min-width: 768px) {
        .nav-desktop {
          display: flex;
        }

        .nav-mobile-toggle {
          display: none;
        }
      }

      .nav-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0.52rem 1rem;
        color: #8ea0bf;
        border-radius: 999px;
        font-size: 0.95rem;
        line-height: 1.4;
        border: 1px solid transparent;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
      }

      .nav-link:hover {
        background: rgba(255, 255, 255, 0.06);
        color: #f1f6fd;
      }

      .nav-link.active-nav {
        background: rgba(56, 224, 255, 0.08);
        color: #fff;
        border-color: rgba(56, 224, 255, 0.22);
      }

      @media (max-width: 767px) {
        .nav-link {
          width: 100%;
          justify-content: flex-start;
          padding: 0.8rem 1rem;
          border-radius: 12px;
          min-height: 46px;
        }
      }

      .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        min-height: 44px;
        padding: 0.6rem 1.4rem;
        border-radius: 12px;
        background-image: linear-gradient(135deg, #1299b8, #38e0ff 52%, #6c8cff);
        color: #fff;
        font-size: 0.94rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        border: 0;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 10px 30px rgba(56, 224, 255, 0.22);
        transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
        cursor: pointer;
      }

      .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 16px 42px rgba(56, 224, 255, 0.34);
        filter: brightness(1.04);
      }

      .btn-primary:active {
        transform: translateY(1px);
        box-shadow: 0 8px 22px rgba(56, 224, 255, 0.18);
      }

      .btn-secondary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        min-height: 44px;
        padding: 0.6rem 1.4rem;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(148, 163, 184, 0.28);
        color: #e8f3ff;
        font-size: 0.94rem;
        font-weight: 600;
        transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
      }

      .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.09);
        border-color: rgba(56, 224, 255, 0.5);
        transform: translateY(-2px);
      }

      .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.26rem 0.7rem;
        border-radius: 999px;
        font-size: 0.76rem;
        font-weight: 600;
        letter-spacing: 0.16em;
        color: #b3f3ff;
        background: rgba(56, 224, 255, 0.06);
        border: 1px solid rgba(56, 224, 255, 0.16);
      }

      .tag-cyan {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.2rem 0.6rem;
        border-radius: 999px;
        font-size: 0.76rem;
        line-height: 1.5;
        color: #c9f4ff;
        background: rgba(56, 224, 255, 0.08);
        border: 1px solid rgba(56, 224, 255, 0.22);
      }

      .tag-amber {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        padding: 0.2rem 0.6rem;
        border-radius: 999px;
        font-size: 0.76rem;
        line-height: 1.5;
        color: #ffe2a8;
        background: rgba(255, 200, 87, 0.08);
        border: 1px solid rgba(255, 200, 87, 0.24);
      }

      .picture-zoom {
        overflow: hidden;
      }

      .picture-zoom img {
        transition: transform 0.45s ease;
      }

      .picture-zoom:hover img {
        transform: scale(1.03);
      }

      .link-lite {
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
        color: var(--cyan);
        font-weight: 600;
        font-size: 0.92rem;
        border-bottom: 1px solid rgba(56, 224, 255, 0.35);
        padding-bottom: 2px;
        transition: color 0.2s ease, border-color 0.2s ease;
      }

      .link-lite:hover {
        color: var(--cyan-bright);
        border-color: var(--cyan-bright);
      }

      .footer-link {
        color: #8a9dc0;
        font-size: 0.88rem;
        transition: color 0.2s ease;
      }

      .footer-link:hover {
        color: #fff;
      }

      .aside-link {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        width: 100%;
        padding: 0.75rem 0.8rem;
        border-radius: 12px;
        color: #93a7c2;
        font-size: 0.93rem;
        font-weight: 500;
        border: 1px solid transparent;
        transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
      }

      .aside-link span {
        color: rgba(56, 224, 255, 0.75);
        font-size: 0.8rem;
        font-weight: 700;
      }

      .aside-link:hover {
        background: rgba(56, 224, 255, 0.06);
        color: #fff;
        border-color: rgba(56, 224, 255, 0.14);
      }

      .timeline-list {
        list-style: none;
        position: relative;
        padding-left: 38px;
      }

      .timeline-list::before {
        content: "";
        position: absolute;
        left: 16px;
        top: 12px;
        bottom: 12px;
        width: 1px;
        background: linear-gradient(to bottom, rgba(56, 224, 255, 0.4), rgba(108, 140, 255, 0.18), rgba(255, 255, 255, 0.05));
      }

      .timeline-list > li {
        position: relative;
        padding-bottom: 1.6rem;
      }

      .timeline-list > li:last-child {
        padding-bottom: 0;
      }

      .timeline-list > li::before {
        content: "";
        position: absolute;
        left: -33px;
        top: 1.25rem;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background: #0b1626;
        border: 1px solid var(--cyan);
        box-shadow: 0 0 0 5px rgba(56, 224, 255, 0.06), 0 0 18px rgba(56, 224, 255, 0.35);
      }

      .timeline-card {
        border-left: 2px solid rgba(56, 224, 255, 0.45);
        transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
      }

      .timeline-card:hover {
        transform: translateY(-2px);
        border-color: var(--cyan);
        box-shadow: 0 20px 55px rgba(0, 0, 0, 0.26), inset 0 1px 0 rgba(255, 255, 255, 0.1);
      }

      .step-no {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 12px;
        background: linear-gradient(135deg, rgba(56, 224, 255, 0.16), rgba(108, 140, 255, 0.08));
        border: 1px solid rgba(56, 224, 255, 0.24);
        color: var(--cyan);
        font-size: 0.92rem;
        font-weight: 800;
      }

      .check-list {
        list-style: none;
        margin: 0;
        padding: 0;
      }

      .check-list li {
        position: relative;
        padding-left: 1.5rem;
        margin: 0.42rem 0;
        color: #c7d3e6;
        font-size: 0.92rem;
      }

      .check-list li::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0.5rem;
        width: 0.68rem;
        height: 0.68rem;
        border-radius: 50%;
        background: rgba(56, 224, 255, 0.12);
        border: 1px solid var(--cyan);
        box-shadow: 0 0 8px rgba(56, 224, 255, 0.32);
      }

      .node-spoiler {
        margin-top: 1rem;
        border-top: 1px solid rgba(148, 163, 184, 0.12);
        padding-top: 0.75rem;
      }

      .node-spoiler summary {
        list-style: none;
        display: flex;
        align-items: center;
        gap: 0.4rem;
        cursor: pointer;
        color: #9edfff;
        font-size: 0.9rem;
        font-weight: 600;
        transition: color 0.2s ease;
      }

      .node-spoiler summary::-webkit-details-marker {
        display: none;
      }

      .node-spoiler summary::before {
        content: "+";
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        color: var(--cyan);
        border: 1px solid rgba(56, 224, 255, 0.25);
        line-height: 1;
        font-size: 1rem;
        transform: rotate(0deg);
        transition: transform 0.2s ease;
      }

      .node-spoiler[open] summary::before {
        transform: rotate(45deg);
        background: rgba(56, 224, 255, 0.08);
      }

      .faq-card {
        background: var(--glass-bg);
        border: 1px solid var(--border-glass);
        border-radius: 18px;
        backdrop-filter: blur(14px) saturate(140%);
        -webkit-backdrop-filter: blur(14px) saturate(140%);
        box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.06);
        padding: 1.25rem 1.4rem;
        transition: border-color 0.2s ease, box-shadow 0.2s ease;
      }

      .faq-card[open] {
        border-color: rgba(56, 224, 255, 0.4);
        box-shadow: 0 12px 35px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(56, 224, 255, 0.06), 0 0 30px rgba(56, 224, 255, 0.1);
      }

      .faq-card summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        cursor: pointer;
        color: #f1f6fd;
        font-weight: 600;
        font-size: 1rem;
        line-height: 1.7;
      }

      .faq-card summary::-webkit-details-marker {
        display: none;
      }

      .faq-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        flex: none;
        border-radius: 50%;
        color: var(--cyan);
        font-size: 1.25rem;
        font-weight: 300;
        border: 1px solid rgba(56, 224, 255, 0.3);
        transition: transform 0.2s ease;
      }

      .faq-card[open] .faq-icon {
        transform: rotate(45deg);
      }

      .faq-body {
        margin-top: 0.9rem;
        padding-top: 0.9rem;
        border-top: 1px solid rgba(148, 163, 184, 0.12);
        color: #b8c5d9;
        font-size: 0.95rem;
        line-height: 1.9;
      }

      .hero-bg {
        background-image: linear-gradient(115deg, rgba(6, 14, 25, 0.97) 2%, rgba(6, 14, 25, 0.88) 38%, rgba(11, 22, 38, 0.66) 72%, rgba(11, 22, 38, 0.58)), url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
      }

      .section-soft-bg {
        background-image: radial-gradient(circle at 12% 18%, rgba(56, 224, 255, 0.08) 0, transparent 38%), radial-gradient(circle at 88% 82%, rgba(108, 140, 255, 0.06) 0, transparent 40%);
      }

      .toc-wrap {
        top: 104px;
      }

/* roulang page: category2 */
:root {
  --bg-deep: #060e19;
  --bg-layer: #0b1626;
  --cyan: #38e0ff;
  --cyan-bright: #62eaff;
  --indigo: #6c8cff;
  --purple: #8a76ff;
  --amber: #ffc857;
  --text-main: #f1f6fd;
  --text-secondary: #9daabf;
  --text-muted: #6b7a93;
  --line-glass: rgba(148, 163, 184, 0.18);
  --glass-bg: rgba(255, 255, 255, 0.045);
  --card-radius: 24px;
  --card-radius-md: 16px;
  --btn-radius: 12px;
  --card-shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
  --cyan-glow: rgba(56, 224, 255, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: "PingFang SC", "HarmonicOS Sans", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  position: relative;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button,
input {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

.container {
  max-width: 1240px !important;
  margin-left: auto !important;
  margin-right: auto !important;
  padding-left: 1.25rem !important;
  padding-right: 1.25rem !important;
}

.display-h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text-main);
  font-weight: 800;
}

.h2-title {
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-main);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(56, 224, 255, 0.24);
  background: rgba(56, 224, 255, 0.07);
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.glass-panel,
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--line-glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.glass-card {
  border-radius: var(--card-radius-md);
}

.glass-highlight {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 0 0 1px rgba(56, 224, 255, 0.12), 0 18px 50px rgba(0, 0, 0, 0.25);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.4rem;
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  display: inline-block;
  padding: 0.55rem 0.95rem;
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-main);
}

.nav-link.active-nav,
.nav-link[aria-current="page"] {
  color: var(--cyan-bright);
  background: linear-gradient(135deg, rgba(56, 224, 255, 0.14), rgba(108, 140, 255, 0.1));
  box-shadow: inset 0 0 0 1px rgba(56, 224, 255, 0.18);
}

.nav-mobile-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (min-width: 768px) {
  .nav-mobile-toggle {
    display: none;
  }
}

#mobile-menu {
  background: rgba(6, 14, 25, 0.96);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-top: 1px solid rgba(148, 163, 184, 0.08);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.58rem 1.35rem;
  border: 1px solid rgba(56, 224, 255, 0.35);
  border-radius: var(--btn-radius);
  background: linear-gradient(135deg, #21bdd9, #4be4ff);
  color: #02131c;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset, 0 8px 30px rgba(56, 224, 255, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12) inset, 0 12px 36px rgba(56, 224, 255, 0.32);
  background: linear-gradient(135deg, #32d9f2, #73efff);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset, 0 4px 18px rgba(56, 224, 255, 0.18);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.55rem 1.25rem;
  border-radius: var(--btn-radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(148, 163, 184, 0.28);
  color: var(--text-main);
  font-size: 0.94rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(56, 224, 255, 0.35);
  color: var(--cyan-bright);
  transform: translateY(-1px);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.chip-cyan {
  background: rgba(56, 224, 255, 0.12);
  border-color: rgba(56, 224, 255, 0.28);
  color: var(--cyan-bright);
}

.chip-amber {
  background: rgba(255, 200, 87, 0.12);
  border-color: rgba(255, 200, 87, 0.28);
  color: var(--amber);
}

.hero-cover {
  background: linear-gradient(180deg, rgba(6, 14, 25, 0.28) 0%, rgba(6, 14, 25, 0.8) 75%, var(--bg-deep) 100%);
}

.horizontal-scroll {
  scrollbar-width: thin;
  scrollbar-color: rgba(56, 224, 255, 0.55) rgba(255, 255, 255, 0.05);
}

.horizontal-scroll::-webkit-scrollbar {
  height: 5px;
}

.horizontal-scroll::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
}

.horizontal-scroll::-webkit-scrollbar-thumb {
  background: rgba(56, 224, 255, 0.45);
  border-radius: 999px;
}

.schedule-card {
  width: 250px;
  padding: 1.25rem;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(148, 163, 184, 0.16);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.schedule-card:hover {
  border-color: rgba(56, 224, 255, 0.42);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.22), 0 0 0 1px rgba(56, 224, 255, 0.08);
}

.media-card {
  overflow: hidden;
}

.media-card img {
  transition: transform 0.5s ease;
}

.media-card:hover img {
  transform: scale(1.04);
}

.media-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 48%, rgba(6, 14, 25, 0.66) 100%);
}

.remind-row {
  display: flex;
  align-items: flex-start;
  padding: 0.8rem 0.9rem;
  border-radius: 14px;
  background: rgba(6, 14, 25, 0.42);
  border: 1px solid rgba(148, 163, 184, 0.15);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.remind-row:hover {
  background: rgba(6, 14, 25, 0.7);
  border-color: rgba(56, 224, 255, 0.3);
}

.remind-row input[type="checkbox"] {
  accent-color: var(--cyan);
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.22rem;
}

.info-line {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.14);
}

.info-line:last-child {
  border-bottom: 0;
}

.timeline-line {
  position: absolute;
  left: 1.3rem;
  top: 3rem;
  bottom: 0.2rem;
  width: 1px;
  background: linear-gradient(180deg, rgba(56, 224, 255, 0.5), rgba(108, 140, 255, 0.12), transparent);
}

.faq-item {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(148, 163, 184, 0.16);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item[open] {
  border-color: rgba(56, 224, 255, 0.34);
  box-shadow: 0 0 0 1px rgba(56, 224, 255, 0.06), 0 16px 40px rgba(0, 0, 0, 0.2);
}

.faq-plus {
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.25s ease, color 0.25s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-plus {
  transform: rotate(45deg);
  color: var(--cyan-bright);
}

.cta-band {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 50%, rgba(56, 224, 255, 0.2), transparent 28%),
    radial-gradient(circle at 88% 0%, rgba(108, 140, 255, 0.15), transparent 38%),
    linear-gradient(180deg, rgba(11, 22, 38, 0.95), rgba(6, 14, 25, 0.92));
  border: 1px solid rgba(56, 224, 255, 0.16);
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: #f1f6fd;
}

@media (max-width: 767.98px) {
  .schedule-card {
    width: 232px;
  }

  .responsive-stack {
    display: grid;
    grid-template-columns: 1fr;
  }

  .display-h1 {
    letter-spacing: 0;
  }
}

@media (min-width: 768px) and (max-width: 1023.98px) {
  .schedule-card {
    width: 250px;
  }
}

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

.muted-text {
  color: var(--text-secondary);
}

.soft-text {
  color: var(--text-muted);
}