/* QuickQ v1.0 — 全站样式 */
*, *::before, *::after { box-sizing: border-box; }
:root {
  --brand: #5b8cff;
  --brand-2: #7c5cff;
  --brand-deep: #1d2a5b;
  --accent: #ff7e5f;
  --text: #1d2330;
  --text-on-dark: #f4f6ff;
  --text-2-on-dark: #c0c8e0;
  --text-3-on-dark: #8a93b8;
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.22);
  --bg: transparent;
  --bg-alt: rgba(255, 255, 255, 0.04);
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.10);
  --bg-dark: #0e1530;
  --max: 1200px;
  --radius: 14px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
}
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-on-dark);
  background-color: #06091c;
  background-image: url("img/starship-bg.jpg");
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  background-attachment: fixed;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(6, 9, 28, 0.55) 0%,
    rgba(6, 9, 28, 0.45) 25%,
    rgba(6, 9, 28, 0.55) 55%,
    rgba(6, 9, 28, 0.92) 100%);
  z-index: -1;
  pointer-events: none;
}
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-2); }
img { max-width: 100%; display: block; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* 顶部公告 */
.topbar {
  background: linear-gradient(90deg, #16214b, #1d2a5b);
  color: #cbd2e5;
  font-size: 13px;
  text-align: center;
  padding: 10px 24px;
}
.topbar-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  margin-right: 8px;
  vertical-align: middle;
  animation: blink 2s infinite;
}
@keyframes blink { 0%,100%{ opacity: 1; } 50%{ opacity: .4; } }
.topbar-link {
  color: #aac3ff;
  margin-left: 12px;
  font-weight: 600;
}

/* 导航 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 9, 28, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex; align-items: center;
  padding: 16px 24px;
  gap: 32px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-on-dark); font-weight: 800;
  font-size: 20px;
  line-height: 0;
}
.logo-img {
  display: block;
  height: 36px;
  width: auto;
  filter: drop-shadow(0 0 6px rgba(91, 140, 255, 0.25));
}
.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--text-on-dark);
  background: linear-gradient(135deg, #ffffff 0%, #c8d6ff 60%, #5b8cff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  line-height: 1;
}
.footer-logo-img {
  display: block;
  height: 32px;
  width: auto;
  margin-bottom: 12px;
  opacity: 0.95;
}
.nav-menu {
  display: flex; gap: 28px;
  flex: 1; justify-content: center;
}
.nav-menu a {
  color: var(--text-2-on-dark); font-weight: 500;
  position: relative;
}
.nav-menu a:hover { color: var(--brand); }
.nav-menu a.active { color: var(--text-on-dark); }
.nav-menu a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -22px;
  height: 2px; background: linear-gradient(90deg, var(--brand), var(--brand-2));
}
.nav-cta {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  transition: transform .2s;
}
.nav-cta:hover { transform: translateY(-1px); }

/* Hero */
.hero {
  position: relative;
  padding: 120px 24px 140px;
  text-align: center;
  overflow: hidden;
  color: var(--text-on-dark);
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 70% at 50% 100%, rgba(91,140,255,.35), transparent 70%),
    radial-gradient(ellipse 40% 50% at 50% 0%, rgba(124,92,255,.32), transparent 70%);
  z-index: -1;
}
.hero-inner { max-width: 920px; margin: 0 auto; position: relative; }
.hero-badge {
  display: inline-block;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35);
  color: var(--brand);
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
  font-weight: 600;
}
.hero-title {
  font-size: 52px; line-height: 1.2;
  margin: 0 0 20px;
  letter-spacing: -.02em;
}
.grad {
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-title-2 {
  display: block;
  font-size: 28px;
  font-weight: 600;
  margin-top: 10px;
  color: var(--text-2-on-dark);
}
.hero-sub {
  font-size: 16px; color: var(--text-2-on-dark);
  margin: 32px auto;
  max-width: 760px;
}
.hero-sub strong { color: var(--text-on-dark); }
.hero-cta { display: flex; justify-content: center; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; }

.hero-platforms {
  display: flex; align-items: center; justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 8px auto 28px;
  max-width: 760px;
}
.hp-plat {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-on-dark);
}
.hp-plat-on {
  background: rgba(91, 140, 255, 0.22);
  border-color: rgba(91, 140, 255, 0.45);
  color: #c2d4ff;
}
.hp-divider {
  display: inline-block;
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, 0.2);
  margin: 0 6px;
}
.hp-since {
  color: var(--text-3-on-dark);
  letter-spacing: .15em;
  text-transform: uppercase;
  font-size: 11px;
}

.hero-stats {
  display: flex; justify-content: center; gap: 56px;
  flex-wrap: wrap;
  padding: 28px 24px;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.stat { display: flex; flex-direction: column; align-items: center; }
.stat b { font-size: 28px; color: var(--text-on-dark); font-weight: 800; }
.stat span { font-size: 12px; color: var(--text-3-on-dark); margin-top: 4px; text-transform: uppercase; letter-spacing: .05em; }

/* 按钮 */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  font-size: 15px; font-weight: 600;
  transition: all .2s;
  cursor: pointer; border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(91,140,255,.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(91,140,255,.36); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-on-dark);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--brand);
  color: #fff;
}
.btn-block { display: block; width: 100%; text-align: center; }

/* 通用区段 */
.section { padding: 80px 24px; }
.section-alt {
  background: rgba(6, 9, 28, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-kicker {
  display: inline-block;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35); color: #c2d4ff;
  padding: 6px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  letter-spacing: .08em;
  margin-bottom: 18px;
}
.section-title {
  font-size: 36px; font-weight: 800;
  margin: 0 0 16px; letter-spacing: -.01em;
  line-height: 1.25;
}
.section-sub { font-size: 16px; color: var(--text-2-on-dark); margin: 0; }

/* 差异化卡片 */
.diff-product-shot {
  margin: 0 auto 48px;
  max-width: 920px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(6, 9, 28, 0.6);
  box-shadow: var(--shadow-lg);
  position: relative;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.diff-product-shot img {
  display: block;
  width: 100%;
  height: auto;
}
.diff-shot-caption {
  position: absolute;
  left: 24px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: rgba(6, 9, 28, 0.78);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-on-dark);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.diff-shot-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px #4ade80;
}
.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.diff-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  transition: all .25s;
}
.diff-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #b9caff; }
.diff-icon {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 700;
  margin-bottom: 18px;
}
.diff-card h3 { margin: 0 0 8px; font-size: 18px; }
.diff-card p { color: var(--text-2-on-dark); font-size: 14px; margin: 0 0 16px; }
.diff-tag {
  display: inline-block;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35);
  color: var(--brand);
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  font-weight: 600;
}

/* 平台 */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.platform-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all .2s;
  color: var(--text-on-dark);
}
.platform-card:hover { transform: translateY(-3px); border-color: var(--brand); box-shadow: var(--shadow); }
.platform-empty { opacity: .7; }
.platform-ico { font-size: 36px; margin-bottom: 12px; }
.platform-card h4 { margin: 0 0 6px; font-size: 16px; }
.platform-card p { font-size: 13px; color: var(--text-3-on-dark); margin: 4px 0 0; }

/* 节点 */
.node-topology {
  margin-bottom: 24px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: rgba(6, 9, 28, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.node-topology img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
}
.node-stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.node-stat {
  text-align: center;
  border-right: 1px solid var(--border);
  padding: 4px 0;
}
.node-stat:last-child { border-right: none; }
.node-stat b {
  display: block;
  font-size: 26px;
  font-weight: 800;
  background: linear-gradient(135deg, #67e8f9, #5b8cff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}
.node-stat span {
  font-size: 12px;
  color: var(--text-3-on-dark);
  text-transform: uppercase;
  letter-spacing: .05em;
}
.node-regions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}
.node-region {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px 20px;
}
.node-region-head {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.node-region-head::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 6px #4ade80;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}
.node-region-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-on-dark);
  letter-spacing: .02em;
}
.node-region-meta {
  font-size: 12px;
  color: var(--text-3-on-dark);
}
.node-list {
  display: flex; flex-direction: column;
  gap: 6px;
}
.node-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  font-size: 13px;
  transition: all .15s;
}
.node-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(91, 140, 255, 0.4);
}
.node-city { font-weight: 600; color: var(--text-on-dark); }
.node-ping {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
  color: #67e8f9;
  letter-spacing: .02em;
  min-width: 50px;
  text-align: right;
}
.node-status {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.22); border: 1px solid rgba(34,197,94,.45);
  color: #86efac;
  white-space: nowrap;
}
.node-foot {
  text-align: center;
  color: var(--text-3-on-dark);
  font-size: 13px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}
.node-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
}
.node-city { font-weight: 600; }
.node-status {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.22); border: 1px solid rgba(34,197,94,.45);
  color: #86efac;
}
.node-foot {
  text-align: center;
  color: var(--text-3-on-dark);
  font-size: 13px;
  margin-top: 16px;
}

/* 场景 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.scene-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s;
}
.scene-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.scene-img {
  height: 200px;
  background: linear-gradient(135deg, #1d2a5b, #5b8cff);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex; align-items: flex-end; justify-content: center;
  color: #fff; font-size: 13px; font-weight: 700;
  letter-spacing: .15em;
  position: relative;
  text-transform: uppercase;
}
.scene-img::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(6,9,28,0) 50%, rgba(6,9,28,.65) 100%);
  pointer-events: none;
}
.scene-img::after {
  content: attr(data-label);
  position: relative;
  z-index: 1;
  padding: 8px 16px;
  margin-bottom: 14px;
  background: rgba(6,9,28,0.6);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
}
.scene-img[data-tag="game"]  { background-image: url('img/scene-game.png'), linear-gradient(135deg,#1f3a8a,#5b8cff); }
.scene-img[data-tag="ecom"]  { background-image: url('img/scene-ecom.png'), linear-gradient(135deg,#7c3aed,#ec4899); }
.scene-img[data-tag="dev"]   { background-image: url('img/scene-dev.png'),  linear-gradient(135deg,#0e7490,#22d3ee); }
.scene-card h3 { margin: 0 0 8px; font-size: 18px; padding: 0 24px; }
.scene-card p  { padding: 0 24px; color: var(--text-2-on-dark); font-size: 14px; margin-bottom: 16px; }
.scene-link {
  display: block;
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  font-weight: 600;
  font-size: 13px;
}

/* 文章列表 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.article-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .25s;
  color: var(--text-on-dark);
}
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.article-cover {
  height: 150px;
  position: relative;
  background-color: rgba(6,9,28,0.4);
}
.article-cover[data-tag="install"] { background-color: #1e3a8a; }
.article-cover[data-tag="game"]    { background-color: #5b21b6; }
.article-cover[data-tag="ecom"]    { background-color: #d97706; }
.article-cover[data-tag="dev"]     { background-color: #0f766e; }
.article-cover[data-tag="router"]  { background-color: #1e293b; }
.article-cover[data-tag="console"] { background-color: #7e22ce; }
.article-cover[data-tag="stream"]  { background-color: #0e7490; }
.article-cover[data-tag="compare"] { background-color: #0f172a; }
.article-card h4 { margin: 18px 18px 4px; font-size: 16px; line-height: 1.4; }
.article-meta { padding: 0 18px 16px; font-size: 13px; color: var(--text-3-on-dark); margin: 0; }
.article-more { text-align: center; margin-top: 36px; }

/* 价格 */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: stretch;
}
.price-grid-3 { max-width: 1080px; margin: 0 auto; }
.price-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  position: relative;
}
.price-card-hot {
  border: 2px solid var(--brand);
  box-shadow: 0 0 0 6px rgba(91,140,255,.15), 0 16px 36px rgba(91,140,255,.28);
  transform: translateY(-6px);
  background: rgba(91,140,255,0.10);
}
.hot-tag {
  position: absolute;
  top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
  padding: 4px 16px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
}
.price-card h4 { margin: 0 0 12px; font-size: 18px; }
.price-num {
  font-size: 40px; font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: -.02em;
}
.price-num span { font-size: 14px; color: var(--text-3-on-dark); font-weight: 400; }
.price-desc { color: var(--text-2-on-dark); font-size: 13px; margin: 0 0 16px; }
.price-card ul {
  list-style: none; padding: 0; margin: 16px 0 24px;
}
.price-card ul li {
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px dashed var(--border);
}
.price-foot { font-size: 12px; color: var(--text-3-on-dark); text-align: center; margin: 12px 0 0; }

/* CTA */
.section-cta {
  background: linear-gradient(135deg, rgba(6,9,28,0.85), rgba(29,42,91,0.85));
  color: var(--text-on-dark);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-inner h2 { font-size: 32px; margin: 0 0 12px; color: var(--text-on-dark); }
.cta-inner p { color: var(--text-2-on-dark); margin-bottom: 28px; }

/* 页脚 */
.footer {
  background: rgba(2, 5, 18, 0.85);
  color: #a8b3d6;
  padding: 56px 0 0;
  border-top: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding: 0 24px;
}
.footer h5 { color: #fff; font-size: 14px; margin: 0 0 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin-bottom: 10px; }
.footer a { color: #a8b3d6; }
.footer a:hover { color: #fff; }
.footer-brand p { margin-top: 12px; color: #7c8bb1; font-size: 13px; max-width: 240px; }
.footer-bottom {
  margin-top: 40px;
  padding: 20px 24px;
  text-align: center;
  border-top: 1px solid #1d2440;
  font-size: 12px;
  color: #6c7799;
}
.friend-links {
  margin-top: 18px;
  padding: 14px 24px 0;
  text-align: center;
  font-size: 12px;
  color: #6c7799;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px 14px;
}
.friend-links-title {
  color: #7c8bb1;
  margin-right: 4px;
}
.friend-links a {
  color: #a8b3d6;
  text-decoration: none;
  transition: color .15s ease;
}
.friend-links a:hover { color: #fff; text-decoration: underline; }

/* 页面 Hero (子页) */
.page-hero {
  padding: 110px 24px 64px;
  background: linear-gradient(180deg, rgba(6,9,28,.2), rgba(6,9,28,0));
  text-align: center;
  color: var(--text-on-dark);
}
.page-hero h1 {
  font-size: 44px; margin: 0 0 16px; letter-spacing: -.01em;
}
.page-hero p { color: var(--text-2-on-dark); font-size: 16px; max-width: 720px; margin: 0 auto; }

/* Rep / Stats */
.rep-stats {
  display: flex; justify-content: center; gap: 64px;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* 口碑卡片 */
.rep-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}
.rep-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.rep-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.rep-avatar {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; font-weight: 700;
  border-radius: 50%;
  font-size: 14px;
}
.rep-head b { color: var(--text-on-dark); }
.rep-head span { color: var(--text-3-on-dark); font-size: 12px; }
.rep-score { margin-left: auto; color: #f59e0b; letter-spacing: 2px; }
.rep-meta { font-size: 12px; color: var(--text-3-on-dark); margin-top: 16px; }

/* 评分条 */
.rate-list { max-width: 720px; margin: 0 auto; }
.rate-row {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.rate-row span { width: 96px; color: var(--text-2-on-dark); font-size: 14px; }
.rate-bar { flex: 1; height: 8px; background: rgba(255,255,255,.08); border-radius: 999px; overflow: hidden; }
.rate-bar i {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}
.rate-row b { width: 48px; text-align: right; color: var(--text-on-dark); font-weight: 700; }

/* 引用块 */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.quote-card {
  margin: 0;
  padding: 24px;
  background: linear-gradient(135deg, #f8faff, #eef2fb);
  border-left: 4px solid var(--brand);
  border-radius: 10px;
}
.quote-card p { margin: 0 0 12px; font-style: italic; color: var(--text-on-dark); }
.quote-card cite { font-size: 13px; color: var(--text-3-on-dark); font-style: normal; }

/* 指南列表 */
.guide-list { display: flex; flex-direction: column; gap: 12px; }
.guide-row {
  display: grid;
  grid-template-columns: 80px 1fr 160px 140px;
  gap: 24px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  align-items: center;
  color: var(--text-on-dark);
}
.guide-row:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.guide-tag {
  display: inline-block;
  padding: 4px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
  text-align: center;
}
.tag-install { background: rgba(124, 92, 255, 0.20); border: 1px solid rgba(124,92,255,.40); color: #c7d2fe; }
.tag-game    { background: rgba(219, 39, 119, 0.20); border: 1px solid rgba(219,39,119,.40); color: #f9a8d4; }
.tag-ecom    { background: rgba(245, 158, 11, 0.18); border: 1px solid rgba(245,158,11,.40); color: #fde68a; }
.tag-dev     { background: rgba(34, 211, 238, 0.18); border: 1px solid rgba(34,211,238,.40); color: #67e8f9; }
.tag-router  { background: rgba(148, 163, 184, 0.20); border: 1px solid rgba(148,163,184,.40); color: #cbd5e1; }
.tag-console { background: rgba(139, 92, 246, 0.20); border: 1px solid rgba(139,92,246,.40); color: #c4b5fd; }
.tag-stream  { background: rgba(20, 184, 166, 0.18); border: 1px solid rgba(20,184,166,.40); color: #5eead4; }
.tag-compare { background: rgba(148, 163, 184, 0.20); border: 1px solid rgba(148,163,184,.40); color: #cbd5e1; }
.guide-row h4 { margin: 0 0 4px; font-size: 16px; }
.guide-row p { margin: 0; font-size: 13px; color: var(--text-3-on-dark); }
.guide-thumb {
  display: block;
  width: 140px;
  height: 84px;
  background-color: rgba(6, 9, 28, 0.5);
  background-size: cover;
  background-position: center;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* 下载页 */
.dl-preview {
  margin: 0 auto 36px;
  max-width: 1000px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.dl-preview img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: cover;
}
.dl-platform {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  padding: 28px;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.dl-platform-ico { font-size: 56px; text-align: center; }
.dl-platform-body h3 { margin: 0 0 8px; font-size: 22px; }
.dl-platform-body p { margin: 4px 0; color: var(--text-2-on-dark); font-size: 14px; }
.dl-platform-meta {
  margin: 16px 0;
  font-size: 13px; color: var(--text-3-on-dark);
  display: flex; gap: 16px; flex-wrap: wrap;
}
.dl-platform-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* 首屏快速下载 */
.quick-dl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 0 0 32px;
}
.quick-dl-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-on-dark);
  transition: transform .15s, border-color .15s, background .15s;
}
.quick-dl-card:hover {
  transform: translateY(-2px);
  border-color: #3a82ff;
  background: rgba(58, 130, 255, 0.10);
}
.quick-dl-ico { font-size: 40px; line-height: 1; }
.quick-dl-name { font-size: 16px; font-weight: 600; }
.quick-dl-sub { font-size: 12px; color: var(--text-2-on-dark); }
.quick-dl-btn {
  display: inline-block;
  margin-top: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: #3a82ff;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}

/* 安装步骤 */
.steps-list {
  list-style: none;
  counter-reset: stepc;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.steps-list li {
  counter-increment: stepc;
  position: relative;
  padding: 18px 18px 18px 56px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 92px;
}
.steps-list li::before {
  content: counter(stepc);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #3a82ff;
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.steps-list li strong { display: block; margin-bottom: 4px; }
.steps-list li p { margin: 0; color: var(--text-2-on-dark); font-size: 13px; }

/* 系统要求速查表 */
.req-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 12px;
  overflow: hidden;
}
.req-table th, .req-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.req-table th {
  background: rgba(58, 130, 255, 0.12);
  color: var(--text-on-dark);
  font-weight: 600;
}
.req-table tr:last-child td { border-bottom: none; }
.req-table .os-ico { font-size: 18px; margin-right: 6px; }

/* 提示卡 */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.tip-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}
.tip-card h4 { margin: 0 0 12px; font-size: 16px; color: var(--text-on-dark); }
.tip-card p  { margin: 0; font-size: 14px; color: var(--text-2-on-dark); }
.tip-card code { background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35); padding: 2px 6px; border-radius: 4px; font-size: 13px; }

/* 订阅 toggle */
.price-toggle {
  display: inline-flex;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px;
  gap: 4px;
  margin-top: 24px;
}
.tgl-btn {
  background: transparent;
  border: none;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px; font-weight: 600;
  color: var(--text-2-on-dark);
  cursor: pointer;
}
.tgl-btn.active {
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff;
}
.tgl-tag {
  display: inline-block;
  margin-left: 4px;
  background: rgba(34, 197, 94, 0.22); border: 1px solid rgba(34,197,94,.45);
  color: #166534;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
}
.tgl-btn.active .tgl-tag { background: rgba(255,255,255,.25); color: #fff; }

/* 对比表 */
.compare-table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 14px;
}
.compare-table th {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-weight: 700;
}
.compare-table tbody tr:last-child td { border-bottom: none; }

/* FAQ 列表 */
.faq-list details {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 12px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: '+';
  position: absolute;
  right: 0; top: -4px;
  font-size: 22px;
  color: var(--brand);
  transition: transform .2s;
}
.faq-list details[open] summary::after { content: '−'; }
.faq-list details p {
  color: var(--text-2-on-dark);
  font-size: 14px;
  margin: 12px 0 0;
}

/* FAQ 网格 */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}
.faq-block {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 24px;
  border-radius: var(--radius);
}
.faq-block h3 {
  margin: 0 0 16px;
  font-size: 18px;
  color: var(--text-on-dark);
}
.faq-block details {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  margin-bottom: 8px;
}

/* 关于 */
.about-block { max-width: 780px; margin: 0 auto; padding: 0 24px; }
.about-block h2 { font-size: 28px; margin: 0 0 20px; }
.about-block p { margin: 0 0 16px; color: var(--text-2-on-dark); font-size: 15px; }
.about-block ul, .about-block ol { color: var(--text-2-on-dark); padding-left: 22px; }
.about-block ul li, .about-block ol li { margin-bottom: 6px; }

.timeline { display: flex; flex-direction: column; gap: 14px; padding-left: 8px; }
.t-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  align-items: center;
  padding: 14px 18px;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  border-left: 4px solid var(--brand);
}
.t-item b { color: var(--brand); font-size: 16px; }
.t-item span { color: var(--text-2-on-dark); font-size: 14px; }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.about-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.contact-card {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.contact-kicker {
  display: inline-block;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35); color: #c2d4ff;
  font-size: 12px; padding: 3px 10px;
  border-radius: 999px; font-weight: 600;
  margin-bottom: 12px;
}
.contact-card h4 { margin: 0 0 8px; font-size: 16px; }
.contact-card p { margin: 0; font-size: 13px; color: var(--text-2-on-dark); }

.addr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 16px;
}
.addr-grid h4 { margin: 0 0 12px; }
.addr-grid p  { margin: 0; font-size: 14px; color: var(--text-2-on-dark); line-height: 1.7; }

/* 文章正文 */
.article {
  background: rgba(6, 9, 28, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-bottom: 60px;
  color: var(--text-on-dark);
}
.article-head h1, .article-body h2, .article-body h2:first-child { color: var(--text-on-dark); }
.article-body h2 { border-top-color: var(--border); }
.article-head { max-width: 800px; margin: 0 auto; padding: 80px 24px 24px; }
.article-crumb { font-size: 13px; color: var(--text-3-on-dark); margin-bottom: 16px; }
.article-cat {
  display: inline-block;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35); color: #c2d4ff;
  font-size: 13px; padding: 4px 12px;
  border-radius: 999px; font-weight: 700;
  margin-bottom: 16px;
}
.article-head h1 {
  font-size: 38px;
  letter-spacing: -.01em;
  line-height: 1.25;
  margin: 0 0 16px;
}
.article-lede {
  font-size: 17px; color: var(--text-2-on-dark);
  margin: 0 0 24px;
  line-height: 1.7;
}
.article-meta {
  display: flex; gap: 8px;
  font-size: 13px; color: var(--text-3-on-dark);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.cover {
  height: 280px;
  background: linear-gradient(135deg, #1d2a5b, #5b8cff);
  margin: 0 auto 48px;
  max-width: var(--max);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.cover::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,.4) 0%, transparent 30%),
              radial-gradient(ellipse 50% 60% at 50% 100%, rgba(91,140,255,.5), transparent 70%);
  mix-blend-mode: screen;
}
.cover[data-tag="install"] { background-color: #1e3a8a; }
.cover[data-tag="game"]    { background-color: #5b21b6; }
.cover[data-tag="ecom"]    { background-color: #d97706; }
.cover[data-tag="dev"]     { background-color: #0f766e; }
.cover[data-tag="router"]  { background-color: #1e293b; }
.cover[data-tag="console"] { background-color: #7e22ce; }
.cover[data-tag="stream"]  { background-color: #0e7490; }
.cover[data-tag="compare"] { background-color: #0f172a; }

.article-body {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
}
.toc {
  position: sticky; top: 90px; align-self: start;
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 20px;
  border-radius: 12px;
  font-size: 13px;
}
.toc h5 {
  margin: 0 0 12px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-3-on-dark);
}
.toc ol {
  padding-left: 16px;
  margin: 0;
}
.toc ol li { margin-bottom: 6px; color: var(--text-2-on-dark); }
.toc a { color: var(--text-2-on-dark); }
.toc a:hover { color: var(--brand); }

.article-body > section { min-width: 0; }
.article-body h2 {
  font-size: 24px;
  margin: 36px 0 14px;
  padding-top: 16px;
}
.article-body h2:first-child { margin-top: 0; padding-top: 0; }
.article-body p, .article-body ul, .article-body ol {
  color: var(--text-2-on-dark);
  margin: 0 0 16px;
  line-height: 1.85;
}
.article-body ul, .article-body ol { padding-left: 22px; }
.article-body li { margin-bottom: 6px; }
.article-body code, .article-body pre {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 13px;
  color: var(--brand-deep);
}
.article-body pre {
  display: block;
  padding: 16px;
  background: #0e1530;
  color: #cbd2e5;
  overflow-x: auto;
  line-height: 1.5;
  border-radius: 8px;
}
.article-body pre code {
  background: transparent; padding: 0; color: inherit;
}
.callout {
  background: rgba(91, 140, 255, 0.18); border: 1px solid rgba(91,140,255,.35);
  border-left: 4px solid var(--brand);
  padding: 16px 20px;
  border-radius: 8px;
  margin: 20px 0;
  font-size: 14px;
  color: var(--text-on-dark);
}
.callout b { color: #c2d4ff; }

.figure { margin: 20px 0 28px; }
.figure-img {
  height: 220px;
  background: linear-gradient(135deg, #1d2a5b, #5b8cff);
  border-radius: 10px;
}
.figure-img[data-tag="install"] { background-color: #1e3a8a; }
.figure-img[data-tag="game"]    { background-color: #5b21b6; }
.figure-img[data-tag="ecom"]    { background-color: #d97706; }
.figure-img[data-tag="dev"]     { background-color: #0f766e; }
.figure-img[data-tag="router"]  { background-color: #1e293b; }
.figure-img[data-tag="console"] { background-color: #7e22ce; }
.figure-img[data-tag="stream"]  { background-color: #0e7490; }
.figure-img[data-tag="compare"] { background-color: #0f172a; }
.figure span {
  display: block;
  font-size: 13px;
  color: var(--text-3-on-dark);
  text-align: center;
  margin-top: 8px;
}

.kv-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.kv-table th, .kv-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.kv-table th {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-weight: 700;
}
.kv-table tbody tr:last-child td { border-bottom: none; }

.article-foot {
  margin: 40px 0 0;
  padding: 20px;
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 10px;
  color: var(--text-2-on-dark);
  font-size: 14px;
}
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}
.article-nav a {
background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  color: var(--text-on-dark);
  font-weight: 600;
}
.article-nav .next { text-align: right; color: var(--brand); }
.article-nav a:hover { border-color: var(--brand); }

/* Legal */
.legal { padding: 0 24px 60px; }
.legal .container { max-width: 800px; }
.legal h2 {
  font-size: 22px;
  margin: 30px 0 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.legal h2:first-of-type { border-top: none; }
.legal p { color: var(--text-2-on-dark); margin: 0 0 12px; line-height: 1.85; }
.legal ul, .legal ol { padding-left: 22px; color: var(--text-2-on-dark); }
.legal ul li, .legal ol li { margin-bottom: 4px; }
.legal-history { margin-top: 40px; padding: 20px; background: rgba(255,255,255,0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px); border-radius: 10px; font-size: 14px; }
.legal-history h4 { margin: 0 0 12px; }

/* 响应式 */
@media (max-width: 960px) {
  .hero-title { font-size: 38px; }
  .hero-title-2 { font-size: 22px; }
  .section-title { font-size: 28px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .article-body { grid-template-columns: 1fr; }
  .toc { position: static; margin-bottom: 24px; }
  .guide-row { grid-template-columns: 70px 1fr; }
  .guide-thumb { display: none; }
  .nav-menu { display: none; }
  .logo-text { font-size: 18px; }
  .logo-img { height: 30px; }
  .node-stats-band { grid-template-columns: repeat(2, 1fr); }
  .node-stat:nth-child(2) { border-right: none; }
  .node-stat:nth-child(1), .node-stat:nth-child(2) { border-bottom: 1px solid var(--border); padding-bottom: 16px; }
  .node-stat:nth-child(3), .node-stat:nth-child(4) { padding-top: 16px; }
}
@media (max-width: 640px) {
  .nav-inner { gap: 12px; padding: 12px 16px; }
  .nav-cta { padding: 8px 12px; font-size: 13px; }
  .hero { padding: 60px 16px 80px; }
  .hero-title { font-size: 30px; }
  .hero-title-2 { font-size: 18px; }
  .section { padding: 60px 16px; }
  .section-title { font-size: 24px; }
  .hero-stats { gap: 28px; padding: 18px; }
  .stat b { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .page-hero h1 { font-size: 30px; }
  .article-head h1 { font-size: 28px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav .next { text-align: left; }
  .article-body pre { font-size: 12px; padding: 12px; }
}