/* roulang page: index */
:root{
    --brand:#f59e0b; --brand-dark:#d97706; --brand-light:#fbbf24;
    --bg:#080d18; --surface:#111a2e; --surface2:#16213a; --border:#233252;
    --text:#e2e8f0; --muted:#94a3b8; --radius:18px;
  }
  html{scroll-behavior:smooth}
  body{background:var(--bg); color:var(--text); font-family:'Segoe UI',PingFang SC,Microsoft YaHei,sans-serif; line-height:1.7; letter-spacing:0.01em}
  ::selection{background:rgba(245,158,11,.3); color:#fffbeb}
  .app-shell{display:flex; min-height:100vh}
  .sidebar{width:264px; background:linear-gradient(180deg,#0d1526 0%,#0a101d 100%); border-right:1px solid #1e2c4a; position:fixed; inset:0 auto 0 0; z-index:60; display:flex; flex-direction:column; transition:transform .3s ease}
  .sidebar .nav-item{display:flex; align-items:center; gap:.85rem; padding:.8rem 1.15rem; border-radius:14px; color:#9aa7bd; font-size:.95rem; font-weight:500; transition:all .22s ease; border:1px solid transparent}
  .sidebar .nav-item i{width:22px; text-align:center; font-size:1.05rem}
  .sidebar .nav-item:hover{color:#fff; background:rgba(255,255,255,.06); transform:translateX(3px)}
  .sidebar .nav-item.active{background:linear-gradient(135deg,rgba(245,158,11,.16),rgba(245,158,11,.05)); color:var(--brand-light); border-color:rgba(245,158,11,.25); box-shadow:0 0 20px rgba(245,158,11,.08)}
  .main-wrap{flex:1; margin-left:264px; min-width:0}
  .mobile-header{display:none}
  .hero-zone{position:relative; isolation:isolate; min-height:520px; display:flex; align-items:center}
  .hero-zone::before{content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-1.png') center/cover no-repeat; z-index:-2}
  .hero-zone::after{content:''; position:absolute; inset:0; background:linear-gradient(100deg,rgba(8,13,24,.94) 15%,rgba(8,13,24,.55) 55%,rgba(8,13,24,.25)); z-index:-1}
  .card{background:linear-gradient(160deg,var(--surface2),var(--surface)); border:1px solid var(--border); border-radius:var(--radius); transition:all .3s cubic-bezier(.4,0,.2,1)}
  .card:hover{transform:translateY(-4px); box-shadow:var(--shadow-card); border-color:rgba(245,158,11,.3)}
  .btn-primary{display:inline-flex; align-items:center; gap:.5rem; background:linear-gradient(135deg,var(--brand),var(--brand-dark)); color:#0b1020; font-weight:700; padding:.85rem 2rem; border-radius:999px; transition:all .25s ease; box-shadow:0 4px 20px rgba(245,158,11,.25)}
  .btn-primary:hover{transform:translateY(-2px); box-shadow:0 8px 30px rgba(245,158,11,.4); filter:brightness(1.05)}
  .btn-ghost{display:inline-flex; align-items:center; gap:.5rem; border:1px solid rgba(255,255,255,.2); padding:.85rem 1.8rem; border-radius:999px; color:var(--text); font-weight:600; transition:all .25s ease; background:rgba(255,255,255,.03)}
  .btn-ghost:hover{border-color:var(--brand); color:var(--brand-light); background:rgba(245,158,11,.08)}
  .tech-chip{display:inline-flex; align-items:center; gap:.4rem; background:rgba(245,158,11,.1); border:1px solid rgba(245,158,11,.25); color:#fcd34d; padding:.4rem 1rem; border-radius:999px; font-size:.82rem; font-weight:600}
  .section-label{display:inline-flex; align-items:center; gap:.6rem; color:var(--brand); font-weight:700; letter-spacing:.12em; text-transform:uppercase; font-size:.82rem}
  .section-label::before{content:''; width:26px; height:2px; background:linear-gradient(90deg,var(--brand),transparent); border-radius:2px}
  .stat-block{background:linear-gradient(160deg,rgba(245,158,11,.08),transparent); border:1px solid rgba(245,158,11,.15); border-radius:16px; padding:1.6rem; text-align:center; transition:all .3s ease}
  .stat-block:hover{transform:scale(1.04); border-color:rgba(245,158,11,.4); box-shadow:0 8px 30px rgba(245,158,11,.1)}
  .faq-item{border:1px solid var(--border); border-radius:16px; background:linear-gradient(160deg,#131e33,#0f1829); overflow:hidden; transition:all .3s ease}
  .faq-item details[open]{border-color:rgba(245,158,11,.3)}
  .faq-item summary{cursor:pointer; padding:1.25rem 1.6rem; font-weight:600; list-style:none; display:flex; justify-content:space-between; align-items:center}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item .faq-icon{transition:transform .3s ease; color:var(--brand)}
  .faq-item details[open] .faq-icon{transform:rotate(45deg)}
  .faq-body{padding:0 1.6rem 1.4rem; color:var(--muted); font-size:.95rem}
  .list-item-card{display:flex; gap:1rem; padding:1rem 1.2rem; border-radius:14px; background:rgba(255,255,255,.02); border:1px solid rgba(255,255,255,.05); transition:all .25s ease}
  .list-item-card:hover{background:rgba(245,158,11,.06); border-color:rgba(245,158,11,.2); transform:translateX(5px)}
  .timeline-dot{width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center; background:rgba(245,158,11,.14); border:1px solid rgba(245,158,11,.3); color:var(--brand); font-weight:700; font-size:.9rem}
  .mobile-menu{position:fixed; inset:0; z-index:100; background:rgba(8,13,24,.96); backdrop-filter:blur(12px); display:flex; flex-direction:column; padding:2rem; transform:translateX(-100%); transition:transform .3s ease}
  .mobile-menu.open{transform:translateX(0)}
  .mobile-menu a{color:var(--text); font-size:1.05rem; padding:.8rem 0; border-bottom:1px solid rgba(255,255,255,.08)}
  .mobile-menu a.active{color:var(--brand); border-left:3px solid var(--brand); padding-left:1rem}
  @media(max-width:1024px){
    .sidebar{transform:translateX(-100%)}
    .sidebar.open{transform:translateX(0)}
    .main-wrap{margin-left:0}
    .mobile-header{display:flex}
    .hero-zone{min-height:460px}
  }
  @media(max-width:640px){
    .hero-zone{min-height:420px}
    .hero-zone h1{font-size:2.2rem!important}
    .btn-primary,.btn-ghost{width:100%; justify-content:center}
  }
  .footer-link{color:var(--muted); font-size:.9rem; transition:color .2s ease}
  .footer-link:hover{color:var(--brand-light)}
  .cover-card{position:relative; overflow:hidden; border-radius:var(--radius)}
  .cover-card img{transition:transform .5s ease}
  .cover-card:hover img{transform:scale(1.08)}
  .cover-card::after{content:''; position:absolute; inset:0; background:linear-gradient(transparent 40%,rgba(8,13,24,.9))}
  .cover-card .cover-text{position:absolute; bottom:0; left:0; right:0; padding:1.2rem; z-index:2}
  .tag{display:inline-block; padding:.25rem .8rem; border-radius:999px; font-size:.78rem; font-weight:600; background:rgba(245,158,11,.12); border:1px solid rgba(245,158,11,.25); color:#fcd34d}

/* roulang page: category1 */
:root{
    --bg-primary:#0a101f;
    --bg-card:#111c30;
    --border:#1e2c4a;
    --text-primary:#f1f5f9;
    --text-secondary:#94a3b8;
    --text-muted:#64748b;
    --accent:#f59e0b;
    --accent-deep:#ea580c;
    --radius:0.75rem;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  body{
    font-family:'Noto Sans SC',system-ui,-apple-system,'Segoe UI',sans-serif;
    background:var(--bg-primary);
    color:var(--text-primary);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{text-decoration:none;color:inherit;}
  button{font-family:inherit;cursor:pointer;background:none;border:none;color:inherit;}

  .nav-item{
    display:flex;
    align-items:center;
    gap:0.75rem;
    padding:0.625rem 0.875rem;
    border-radius:0.75rem;
    font-size:0.875rem;
    font-weight:500;
    color:var(--text-secondary);
    transition:all 0.2s ease;
    border:1px solid transparent;
    width:100%;
  }
  .nav-item i{width:20px;text-align:center;font-size:0.95rem;}
  .nav-item:hover{
    background:rgba(255,255,255,0.05);
    color:var(--text-primary);
    transform:translateX(2px);
  }
  .nav-item.active{
    background:linear-gradient(135deg,rgba(245,158,11,0.16),rgba(234,88,12,0.08));
    color:#fbbf24;
    border-color:rgba(245,158,11,0.25);
    box-shadow:0 4px 16px rgba(245,158,11,0.08);
  }
  .nav-item.active i{color:#fbbf24;}

  .footer-link{
    color:var(--text-secondary);
    transition:color 0.2s ease;
  }
  .footer-link:hover{color:var(--accent);}

  .card-hover{
    transition:transform 0.3s ease,box-shadow 0.3s ease,border-color 0.3s ease;
  }
  .card-hover:hover{
    transform:translateY(-4px);
    box-shadow:0 16px 40px rgba(0,0,0,0.35);
    border-color:rgba(245,158,11,0.25);
  }

  .btn-primary{
    display:inline-flex;
    align-items:center;
    gap:0.5rem;
    background:linear-gradient(135deg,#f59e0b,#ea580c);
    color:#0a101f;
    font-weight:700;
    padding:0.625rem 1.25rem;
    border-radius:0.5rem;
    transition:all 0.25s ease;
    box-shadow:0 4px 18px rgba(245,158,11,0.25);
  }
  .btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 28px rgba(245,158,11,0.4);
  }
  .btn-primary:active{transform:translateY(0);}

  .btn-ghost{
    display:inline-flex;
    align-items:center;
    gap:0.5rem;
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.12);
    color:var(--text-primary);
    font-weight:500;
    padding:0.625rem 1.25rem;
    border-radius:0.5rem;
    transition:all 0.25s ease;
  }
  .btn-ghost:hover{
    background:rgba(255,255,255,0.08);
    border-color:rgba(245,158,11,0.4);
  }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:4px;
    font-size:0.7rem;
    font-weight:600;
    padding:0.2rem 0.6rem;
    border-radius:999px;
    letter-spacing:0.02em;
  }

  .faq-item{
    background:var(--bg-card);
    border:1px solid var(--border);
    border-radius:0.75rem;
    overflow:hidden;
    transition:border-color 0.3s ease;
  }
  .faq-item.open{border-color:rgba(245,158,11,0.35);}
  .faq-question{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:1rem;
    padding:1rem 1.25rem;
    font-weight:600;
    color:var(--text-primary);
    font-size:0.95rem;
    transition:color 0.2s;
  }
  .faq-question:hover{color:var(--accent);}
  .faq-question i{
    transition:transform 0.3s ease;
    color:var(--text-muted);
    font-size:0.8rem;
  }
  .faq-item.open .faq-question i{transform:rotate(180deg);}
  .faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height 0.35s ease;
  }
  .faq-item.open .faq-answer{max-height:160px;}
  .faq-answer-inner{
    padding:0 1.25rem 1.25rem;
    color:var(--text-secondary);
    font-size:0.875rem;
    line-height:1.7;
  }

  ::selection{background:rgba(245,158,11,0.3);color:#fff;}
  ::-webkit-scrollbar{width:8px;height:8px;}
  ::-webkit-scrollbar-track{background:#0a101f;}
  ::-webkit-scrollbar-thumb{background:#1e2c4a;border-radius:4px;}
  ::-webkit-scrollbar-thumb:hover{background:#2a3d63;}

  @media (max-width:1023px){
    .faq-item.open .faq-answer{max-height:220px;}
  }
  @media (max-width:520px){
    .faq-item.open .faq-answer{max-height:280px;}
  }

/* roulang page: article */
:root {
  --bg-deep: #080d18;
  --bg-page: #0b1120;
  --bg-card: #0d1526;
  --bg-card-hover: #16223f;
  --border-soft: #1e2c4a;
  --text-main: #e2e8f0;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.25);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  background: var(--bg-page);
  color: var(--text-body);
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; }
::selection { background: rgba(245,158,11,0.3); color: #fff; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  color: #94a3b8;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.25s ease;
  text-decoration: none;
  white-space: nowrap;
}
.nav-item i { width: 20px; text-align: center; }
.nav-item:hover {
  background: rgba(255,255,255,0.05);
  color: #f59e0b;
  transform: translateX(3px);
}
.nav-item.active {
  background: linear-gradient(135deg, rgba(245,158,11,0.12), rgba(217,70,15,0.06));
  color: #f59e0b;
  box-shadow: inset 0 0 0 1px rgba(245,158,11,0.2);
}

.footer-link {
  color: #94a3b8;
  transition: color 0.2s ease;
  text-decoration: none;
}
.footer-link:hover { color: #f59e0b; }

.article-body {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: #cbd5e1;
  word-wrap: break-word;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #f8fafc;
  margin: 2rem 0 1rem;
  padding-left: 14px;
  border-left: 4px solid #f59e0b;
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f8fafc;
  margin: 1.5rem 0 0.75rem;
}
.article-body h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #f8fafc;
  margin: 1.25rem 0 0.6rem;
}
.article-body p { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.25rem; padding-left: 1.5rem; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 0.4rem; }
.article-body blockquote {
  border-left: 4px solid #f59e0b;
  background: rgba(245,158,11,0.06);
  padding: 1rem 1.25rem;
  border-radius: 0 12px 12px 0;
  margin: 1.5rem 0;
  color: #e2e8f0;
}
.article-body img { border-radius: 12px; margin: 1.5rem 0; }
.article-body a { color: #f59e0b; text-decoration: underline; text-underline-offset: 3px; transition: color 0.2s; }
.article-body a:hover { color: #fbbf24; }
.article-body code {
  background: #1e293b;
  color: #fbbf24;
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}
.article-body pre {
  background: #0f172a;
  border: 1px solid #1e2c4a;
  border-radius: 12px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-body pre code {
  background: none;
  color: #e2e8f0;
  padding: 0;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  display: block;
  overflow-x: auto;
}
.article-body th {
  background: #1e293b;
  color: #f8fafc;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
}
.article-body td {
  padding: 10px 14px;
  border-bottom: 1px solid #1e2c4a;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid #f59e0b;
  outline-offset: 2px;
  border-radius: 4px;
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #0b1120; }
::-webkit-scrollbar-thumb { background: #1e2c4a; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #2a3a5c; }
@media (max-width: 1023px) {
  .nav-item { border-radius: 10px; padding: 9px 12px; }
}

/* roulang page: category2 */
:root {
    --bg-deep: #080d18;
    --bg-panel: #0b1120;
    --bg-card: #111b2e;
    --bg-card-hover: #16223a;
    --border-color: #1e2c4a;
    --text-primary: #e8edf6;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #f59e0b;
    --accent-hover: #fbbf24;
    --accent-deep: #ea580c;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 44px rgba(0, 0, 0, 0.5);
    --sidebar-width: 280px;
    --transition: all 0.25s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  a { text-decoration: none; color: inherit; }
  img { display: block; max-width: 100%; }
  button { cursor: pointer; background: none; font: inherit; }
  input { font: inherit; outline: none; }

  /* ======= Sidebar ======= */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-deep);
    border-right: 1px solid var(--border-color);
    z-index: 60;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
  }

  .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
  }
  .nav-item i { width: 18px; text-align: center; font-size: 15px; }
  .nav-item:hover {
    color: var(--text-primary);
    background: rgba(245, 158, 11, 0.07);
    border-color: rgba(245, 158, 11, 0.15);
  }
  .nav-item.active {
    color: var(--accent);
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
    font-weight: 600;
  }

  /* ======= Mobile Topbar ======= */
  .mobile-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 55;
    height: 60px;
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    background: rgba(8, 13, 24, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
  }

  /* ======= Overlay ======= */
  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 55;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }
  .sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
  }

  /* ======= Shell Main ======= */
  .shell-main {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: linear-gradient(180deg, #0b1120 0%, #080d18 100%);
    display: flex;
    flex-direction: column;
  }

  /* ======= Buttons ======= */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
    color: #0f172a;
    font-weight: 700;
    font-size: 14px;
    padding: 12px 26px;
    border-radius: 999px;
    border: none;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.25);
    transition: var(--transition);
    letter-spacing: 0.02em;
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(245, 158, 11, 0.35);
    background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
  }
  .btn-primary:active {
    transform: translateY(0);
  }
  .btn-primary:focus-visible {
    outline: 2px solid var(--accent-hover);
    outline-offset: 3px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    padding: 12px 26px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: var(--transition);
  }
  .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--accent-hover);
    transform: translateY(-2px);
  }
  .btn-secondary:focus-visible {
    outline: 2px solid var(--accent-hover);
    outline-offset: 3px;
  }

  /* ======= Section ======= */
  .section-spacing {
    padding: 64px 0;
  }
  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.16);
    border-radius: 999px;
    padding: 5px 14px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }
  .section-title {
    font-size: 28px;
    line-height: 1.3;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.01em;
  }
  .section-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.7;
  }

  /* ======= Badge ======= */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 999px;
    padding: 4px 12px;
  }
  .badge-neutral {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 4px 12px;
  }

  /* ======= Dimension Cards ======= */
  .dimension-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }
  .dimension-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-deep));
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  .dimension-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(245, 158, 11, 0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
  }
  .dimension-card:hover::before {
    opacity: 1;
  }
  .dimension-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--accent);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.15);
    margin-bottom: 16px;
  }

  /* ======= Review Cards ======= */
  .review-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
  }
  .review-card:hover {
    border-color: rgba(245, 158, 11, 0.25);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }
  .review-image-wrap {
    position: relative;
    min-height: 180px;
    background: var(--bg-panel);
    overflow: hidden;
  }
  .review-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
  }
  .review-card:hover .review-image-wrap img {
    transform: scale(1.04);
  }
  .review-score {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(8, 13, 24, 0.85);
    backdrop-filter: blur(6px);
    color: var(--accent);
    font-weight: 800;
    font-size: 15px;
    padding: 4px 10px;
    border-radius: 8px;
    border: 1px solid rgba(245, 158, 11, 0.3);
  }
  .review-body {
    padding: 22px 26px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .review-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    margin-top: 12px;
    transition: var(--transition);
  }
  .review-link:hover {
    color: var(--accent-hover);
    gap: 12px;
  }

  /* ======= Timeline ======= */
  .timeline {
    position: relative;
    padding-left: 28px;
  }
  .timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 4px;
    bottom: 4px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), rgba(245, 158, 11, 0.1));
  }
  .timeline-item {
    position: relative;
    padding: 0 0 28px 16px;
  }
  .timeline-item:last-child {
    padding-bottom: 0;
  }
  .timeline-dot {
    position: absolute;
    left: -28px;
    top: 6px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-deep);
    border: 3px solid var(--accent);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.12);
  }
  .timeline-body {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    transition: var(--transition);
  }
  .timeline-body:hover {
    border-color: rgba(245, 158, 11, 0.2);
    background: var(--bg-card-hover);
    transform: translateX(4px);
  }

  /* ======= Stat Cards ======= */
  .stat-card {
    background: linear-gradient(180deg, var(--bg-card) 0%, rgba(17, 27, 46, 0.6) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px 22px;
    text-align: center;
    transition: var(--transition);
  }
  .stat-card:hover {
    border-color: rgba(245, 158, 11, 0.25);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
  }
  .stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    letter-spacing: -0.02em;
  }
  .stat-label {
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-secondary);
  }

  /* ======= FAQ ======= */
  .faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
  }
  .faq-item:hover {
    border-color: rgba(245, 158, 11, 0.2);
  }
  .faq-item[open] {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: var(--shadow-card);
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    transition: var(--transition);
  }
  .faq-question::-webkit-details-marker {
    display: none;
  }
  .faq-question i {
    transition: transform 0.3s ease;
    color: var(--text-muted);
    font-size: 13px;
  }
  .faq-item[open] .faq-question i {
    transform: rotate(180deg);
    color: var(--accent);
  }
  .faq-question:hover {
    color: var(--accent-hover);
  }
  .faq-answer {
    padding: 0 22px 18px;
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    border-top: 1px solid rgba(30, 44, 74, 0.5);
    margin: 0 6px;
    padding-top: 14px;
  }

  /* ======= Newsletter ======= */
  .newsletter-box {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(234, 88, 12, 0.04) 100%);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: calc(var(--radius) + 6px);
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
  }
  .newsletter-box::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(245, 158, 11, 0.08);
    filter: blur(2px);
  }
  .newsletter-input {
    width: 100%;
    padding: 13px 18px;
    border-radius: 999px;
    background: rgba(8, 13, 24, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
  }
  .newsletter-input::placeholder {
    color: var(--text-muted);
  }
  .newsletter-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
  }

  /* ======= Footer ======= */
  .footer-link {
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
  }
  .footer-link:hover {
    color: var(--accent);
  }

  /* ======= Responsive ======= */
  @media (max-width: 1024px) {
    .sidebar {
      transform: translateX(-100%);
      box-shadow: none;
    }
    .sidebar.open {
      transform: translateX(0);
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    }
    .shell-main {
      margin-left: 0;
    }
    .mobile-topbar {
      display: flex;
    }
    .section-spacing {
      padding: 48px 0;
    }
  }

  @media (max-width: 768px) {
    .section-title {
      font-size: 24px;
    }
    .review-card {
      grid-template-columns: 1fr;
    }
    .review-image-wrap {
      min-height: 200px;
      max-height: 240px;
    }
    .review-body {
      padding: 20px;
    }
    .section-spacing {
      padding: 40px 0;
    }
    .stat-number {
      font-size: 30px;
    }
    .newsletter-box {
      padding: 30px 20px;
    }
  }

  @media (max-width: 520px) {
    .section-title {
      font-size: 22px;
    }
    .btn-primary,
    .btn-secondary {
      width: 100%;
      justify-content: center;
      padding: 13px 20px;
      font-size: 15px;
    }
    .mobile-topbar {
      padding: 0 14px;
    }
    .timeline {
      padding-left: 20px;
    }
    .timeline-dot {
      left: -20px;
    }
    .section-spacing {
      padding: 36px 0;
    }
  }

  @media (min-width: 1025px) {
    .sidebar {
      transform: translateX(0);
    }
  }