/* ============================================
   激情视界 / PASSION INDEX
   共享 Site CSS · /assets/site.css
   fingerprint: 699eb9242892080f
   ============================================ */

/* ---------- 1. Reset & tokens ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* 色彩系统 */
  --bg-base: #0A0A0F;
  --bg-zone-a: #D5006D;
  --bg-zone-b: #FF7A00;
  --bg-zone-c: #00C9A7;
  --card-bg: #FFFFFF;
  --line-a: #D5006D;
  --line-b: #FF7A00;
  --line-c: #00C9A7;
  --accent-pink: #FF6EC7;
  --accent-blue: #00E5FF;
  --status-new: #39FF14;
  --status-hot: #FF3D00;
  --status-rec: #9D00FF;
  --ink: #1A1A1A;
  --ink-invert: #FFFFFF;
  --ink-muted: #666666;

  /* 字体 */
  --font-heading: "Impact", "Arial Black", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SFMono-Regular", "Roboto Mono", "Consolas", "Courier New", monospace;

  /* 布局 */
  --container: 1320px;
  --radius: 12px;
  --grid: 20px;
  --shadow: 0 8px 32px rgba(0,0,0,.28);
  --transition: .22s cubic-bezier(.4,0,.2,1);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-invert);
  background: var(--bg-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.nav-open {
  overflow: hidden;
}

#main-content {
  flex: 1 0 auto;
  width: 100%;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--accent-blue);
}

button {
  font-family: inherit;
  font-size: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  margin: 0 0 .5em;
}

p {
  margin: 0 0 1em;
}

::selection {
  background: var(--accent-pink);
  color: var(--ink);
}

/* ---------- 2. Focus & reduced motion ---------- */
:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .site-nav,
  .back-top,
  .scroll-progress {
    transition: none !important;
  }
}

/* ---------- 3. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--grid);
}

.section {
  padding: 72px 0;
}

.section--a {
  background: var(--bg-zone-a);
  color: #fff;
}

.section--b {
  background: var(--bg-zone-b);
  color: var(--ink);
}

.section--c {
  background: var(--bg-zone-c);
  color: var(--ink);
}

.section--dark {
  background: var(--bg-base);
  color: var(--ink-invert);
}

.section--gradient {
  background:
    linear-gradient(125deg, rgba(213,0,109,.28), transparent 42%),
    linear-gradient(215deg, rgba(0,201,167,.22), transparent 42%),
    var(--bg-base);
  color: var(--ink-invert);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(30px, 4.5vw, 48px);
  font-weight: 900;
  line-height: 1.1;
  margin: 0;
  transform: skewX(-5deg);
  color: inherit;
}

.section-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 3px;
  color: inherit;
  opacity: .6;
}

.section-head {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 28px;
}

.section-head .section-note {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  margin-bottom: 4px;
  font-size: 11px;
}

.page-hero {
  position: relative;
  padding: 44px 0 28px;
  background:
    radial-gradient(700px 220px at 82% -10%, rgba(213,0,109,.28), transparent 70%),
    radial-gradient(600px 200px at 8% -20%, rgba(0,229,255,.18), transparent 70%),
    var(--bg-base);
  color: var(--ink-invert);
  border-bottom: 1px solid rgba(255,255,255,.07);
}

.page-hero .section-head {
  margin-bottom: 0;
}

/* ---------- 4. Skip link ---------- */
.skip-link {
  position: fixed;
  top: -64px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--accent-blue);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  transition: top .25s ease;
}

.skip-link:focus {
  top: 0;
}

/* ---------- 5. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(180deg, #150A1A 0%, #0D0A16 60%, var(--bg-base) 100%);
  box-shadow: 0 4px 30px rgba(213,0,109,.08);
}

.top-strip {
  background: #0D0D14;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.top-strip-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 6px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,.5);
  white-space: nowrap;
  overflow: hidden;
}

.top-strip-keyword {
  color: var(--accent-pink);
  font-weight: 700;
  letter-spacing: 1px;
  background: rgba(255,110,199,.1);
  border: 1px solid rgba(255,110,199,.25);
  padding: 2px 10px;
  border-radius: 999px;
  flex-shrink: 0;
}

.top-strip-sep {
  color: rgba(255,255,255,.25);
  flex-shrink: 0;
}

.top-strip-meta {
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-strip-link {
  margin-left: auto;
  color: var(--accent-blue);
  text-decoration: none;
  font-weight: 700;
  flex-shrink: 0;
  transition: color .2s;
}

.top-strip-link:hover {
  color: var(--accent-pink);
}

.header-band {
  height: 3px;
  background: linear-gradient(90deg, var(--bg-zone-a), var(--bg-zone-b), var(--bg-zone-c), var(--accent-pink), var(--accent-blue));
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ---------- 6. Brand ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--bg-zone-a), var(--bg-zone-b));
  box-shadow: 0 0 18px rgba(213,0,109,.45), inset 0 0 0 1px rgba(255,255,255,.2);
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 900;
  color: var(--ink-invert);
  transform: skewX(-8deg);
  transition: transform .2s;
}

.brand:hover .brand-mark {
  transform: skewX(-8deg) rotate(-3deg) scale(1.03);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--ink-invert);
}

.brand-tagline {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 2.5px;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
}

/* ---------- 7. Navigation ---------- */
.site-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border-radius: 10px;
  background: linear-gradient(90deg, rgba(213,0,109,.28), rgba(255,122,0,.28), rgba(0,201,167,.28));
  border: 1px solid rgba(255,255,255,.08);
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 14px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 14px;
  letter-spacing: .6px;
  color: rgba(255,255,255,.82);
  text-decoration: none;
  border-radius: 6px;
  border: 1px solid transparent;
  background: rgba(10,10,15,.5);
  transform: skewX(-8deg);
  transition: transform .2s, background .2s, color .2s, border-color .2s, box-shadow .2s;
}

.nav-link > span {
  display: inline-block;
  transform: skewX(8deg);
}

.nav-link:nth-child(2n) {
  background: rgba(20,20,30,.35);
}

.nav-link:hover {
  background: rgba(255,255,255,.12);
  color: var(--ink-invert);
  transform: skewX(-8deg) translateY(-1px);
  border-color: rgba(255,255,255,.3);
}

.nav-link[aria-current="page"],
.nav-link[aria-current="page"]:hover {
  background: linear-gradient(135deg, var(--accent-pink), var(--bg-zone-a));
  border-color: var(--accent-blue);
  box-shadow: 0 0 14px rgba(255,110,199,.5);
  color: #fff;
  transform: skewX(-8deg) translateY(0);
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--status-new);
  box-shadow: 0 0 6px var(--status-new);
}

/* ---------- 8. Header tools ---------- */
.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  color: rgba(255,255,255,.7);
  font-size: 13px;
  text-decoration: none;
  line-height: 1;
  transition: border-color .2s, background .2s, color .2s;
}

.header-search:hover {
  border-color: var(--accent-blue);
  background: rgba(0,229,255,.1);
  color: var(--accent-blue);
}

.search-icon {
  position: relative;
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.search-icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -4px;
  width: 2px;
  height: 6px;
  background: currentColor;
  transform: rotate(-45deg);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color .2s, background .2s;
}

.nav-toggle:hover {
  background: rgba(255,255,255,.06);
  border-color: var(--accent-blue);
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--ink-invert);
  transition: transform .25s ease, opacity .25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(.4);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 9. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: 80px;
  background: #0D0D14;
}

.footer-band {
  height: 5px;
  background: linear-gradient(90deg, var(--bg-zone-a), var(--bg-zone-b), var(--bg-zone-c), var(--accent-pink), var(--accent-blue));
}

.footer-cta {
  background:
    radial-gradient(900px 200px at 10% 0%, rgba(213,0,109,.5), transparent 70%),
    radial-gradient(900px 200px at 60% 0%, rgba(255,122,0,.4), transparent 70%),
    radial-gradient(900px 200px at 90% 0%, rgba(0,201,167,.4), transparent 70%),
    #0D0D14;
  padding: 28px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.footer-cta-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
}

.footer-cta-label {
  font-family: var(--font-heading);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.1;
  color: var(--ink-invert);
  transform: skewX(-5deg);
  letter-spacing: 1px;
}

.footer-cta-text {
  font-size: 14px;
  color: rgba(255,255,255,.55);
}

.footer-cta-inner .btn {
  margin-left: auto;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 36px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.footer-brand .brand-text strong {
  color: var(--ink-invert);
}

.footer-desc {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255,255,255,.45);
  max-width: 250px;
}

.footer-heading {
  margin: 6px 0 16px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 2px;
  color: var(--accent-pink);
  transform: skewX(-6deg);
  display: inline-block;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.6);
  text-decoration: none;
  font-size: 14px;
  transition: color .2s, transform .2s;
}

.footer-links a::before {
  content: "";
  width: 4px;
  height: 4px;
  background: var(--accent-blue);
  border-radius: 50%;
  flex-shrink: 0;
  opacity: .5;
}

.footer-links a:hover {
  color: var(--accent-blue);
  transform: translateX(4px);
}

.footer-links a:hover::before {
  opacity: 1;
  background: var(--accent-pink);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 16px 24px;
}

.footer-bottom-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255,255,255,.4);
}

.footer-bottom-inner a {
  color: rgba(255,255,255,.5);
  text-decoration: none;
}

.footer-bottom-inner a:hover {
  color: var(--accent-pink);
}

.footer-copy {
  flex-basis: 100%;
  text-align: center;
  order: 5;
  font-size: 11px;
  letter-spacing: 1px;
}

.footer-icp,
.footer-mail,
.footer-phone,
.footer-addr {
  display: inline-flex;
  align-items: center;
}

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transform: skewX(-6deg);
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
}

.btn:hover {
  transform: skewX(-6deg) translateY(-2px);
  box-shadow: var(--shadow);
}

.btn--a {
  background: var(--bg-zone-a);
  color: var(--ink-invert);
}

.btn--b {
  background: var(--bg-zone-b);
  color: var(--ink);
}

.btn--c {
  background: var(--bg-zone-c);
  color: var(--ink);
}

.btn--pink {
  background: var(--accent-pink);
  color: var(--ink);
}

.btn--blue {
  background: var(--accent-blue);
  color: var(--ink);
}

.btn--ghost {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.3);
  color: var(--ink-invert);
}

.btn--ghost:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: none;
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 8px;
  font-size: 14px;
  color: rgba(255,255,255,.55);
}

.breadcrumbs a {
  color: var(--accent-blue);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.breadcrumbs-sep {
  font-family: var(--font-mono);
  color: rgba(255,255,255,.35);
  font-size: 12px;
}

.breadcrumbs [aria-current="page"] {
  color: rgba(255,255,255,.9);
}

/* ---------- 12. 卡片墙 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 20px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 2px solid var(--line-a);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--ink);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent-pink);
}

.card--b {
  border-color: var(--line-b);
}

.card--c {
  border-color: var(--line-c);
}

.card-cover {
  position: relative;
  aspect-ratio: 3 / 4;
  background:
    linear-gradient(135deg, rgba(255,255,255,.12) 25%, transparent 25%) 0 0 / 16px 16px,
    linear-gradient(135deg, var(--bg-zone-a), #5A0030);
}

.card--b .card-cover {
  background:
    linear-gradient(135deg, rgba(255,255,255,.12) 25%, transparent 25%) 0 0 / 16px 16px,
    linear-gradient(135deg, var(--bg-zone-b), #5A2C00);
}

.card--c .card-cover {
  background:
    linear-gradient(135deg, rgba(255,255,255,.12) 25%, transparent 25%) 0 0 / 16px 16px,
    linear-gradient(135deg, var(--bg-zone-c), #004B3F);
}

.card-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-title {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: var(--ink);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  margin-top: auto;
}

/* ---------- 13. 徽标 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 8px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .5px;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge--new {
  background: var(--status-new);
  color: #000;
}

.badge--hot {
  background: var(--status-hot);
  color: var(--ink-invert);
}

.badge--rec {
  background: var(--status-rec);
  color: var(--ink-invert);
}

.badge--a {
  background: var(--bg-zone-a);
  color: var(--ink-invert);
}

.badge--b {
  background: var(--bg-zone-b);
  color: var(--ink);
}

.badge--c {
  background: var(--bg-zone-c);
  color: var(--ink);
}

.badge--pink {
  background: var(--accent-pink);
  color: var(--ink);
}

.badge--blue {
  background: var(--accent-blue);
  color: var(--ink);
}

.badge--outline {
  background: transparent;
  border: 1px solid currentColor;
}

/* ---------- 14. 磁贴矩阵 ---------- */
.tile-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100px;
  padding: 16px;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 18px;
  color: var(--ink-invert);
  text-decoration: none;
  transition: transform .2s, box-shadow .2s;
  overflow: hidden;
}

.tile::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,.14);
  transform: rotate(45deg);
  border-radius: 6px;
}

.tile:hover {
  transform: translateY(-3px) rotate(-1deg);
  box-shadow: var(--shadow);
}

.tile--a {
  background: linear-gradient(135deg, var(--bg-zone-a), #8A0047);
}

.tile--b {
  background: linear-gradient(135deg, var(--bg-zone-b), #9E4B00);
}

.tile--c {
  background: linear-gradient(135deg, var(--bg-zone-c), #007A64);
}

.tile--pink {
  background: linear-gradient(135deg, var(--accent-pink), #B32E87);
}

.tile--blue {
  background: linear-gradient(135deg, var(--accent-blue), #00879E);
}

.tile-label {
  display: block;
  line-height: 1.2;
}

.tile-count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  opacity: .85;
  letter-spacing: 1px;
  margin-top: 8px;
}

/* ---------- 15. 条目列表 ---------- */
.list-rows {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
}

.list-row {
  display: grid;
  grid-template-columns: 44px 1fr auto auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(0,0,0,.08);
  text-decoration: none;
  color: var(--ink);
  transition: background .2s;
}

.list-row:last-child {
  border-bottom: none;
}

.list-row:hover {
  background: rgba(213,0,109,.04);
}

.seq-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--line-a);
  text-align: right;
}

.seq-num::before {
  content: "#";
  font-size: 11px;
  vertical-align: top;
  margin-right: 1px;
  color: var(--accent-pink);
}

.metric-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(127,127,127,.2);
  overflow: hidden;
  min-width: 60px;
}

.metric-bar-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--bg-zone-a), var(--bg-zone-b));
}

.metric-bar-fill--c {
  background: linear-gradient(90deg, var(--bg-zone-c), var(--accent-blue));
}

.metric-bar-fill--pink {
  background: linear-gradient(90deg, var(--accent-pink), var(--status-rec));
}

/* ---------- 16. 标签 ---------- */
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.16);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-invert);
  text-decoration: none;
  transition: border-color .2s, background .2s, color .2s;
}

.tag:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.tag--a {
  background: rgba(213,0,109,.12);
  border-color: rgba(213,0,109,.5);
  color: var(--bg-zone-a);
}

.tag--b {
  background: rgba(255,122,0,.12);
  border-color: rgba(255,122,0,.5);
  color: var(--bg-zone-b);
}

.tag--c {
  background: rgba(0,201,167,.12);
  border-color: rgba(0,201,167,.5);
  color: var(--bg-zone-c);
}

.tag--pink {
  background: rgba(255,110,199,.12);
  border-color: rgba(255,110,199,.5);
  color: var(--accent-pink);
}

.tag--blue {
  background: rgba(0,229,255,.12);
  border-color: rgba(0,229,255,.5);
  color: var(--accent-blue);
}

/* ---------- 17. 索引条 ---------- */
.index-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.index-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 34px;
  padding: 0 6px;
  border-radius: 4px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.14);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-invert);
  text-decoration: none;
  transition: background .2s, border-color .2s, color .2s;
}

.index-item:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.index-item[aria-current="true"] {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: #000;
}

.index-item--dim {
  opacity: .4;
  pointer-events: none;
}

/* ---------- 18. 横向滑轨 ---------- */
.rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 210px;
  gap: 16px;
  overflow-x: auto;
  padding: 4px 4px 16px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}

.rail > * {
  scroll-snap-align: start;
}

.rail::-webkit-scrollbar {
  height: 6px;
}

.rail::-webkit-scrollbar-thumb {
  background: var(--accent-blue);
  border-radius: 999px;
}

.rail::-webkit-scrollbar-track {
  background: rgba(255,255,255,.08);
  border-radius: 999px;
}

/* ---------- 19. 对照表格 ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 14px;
  color: var(--ink);
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(0,0,0,.08);
  vertical-align: middle;
}

.data-table th {
  background: #14141C;
  color: var(--ink-invert);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover {
  background: rgba(213,0,109,.03);
}

/* ---------- 20. 滚动进度与返回顶部 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--bg-zone-a), var(--bg-zone-b), var(--bg-zone-c));
  z-index: 10000;
  transition: width .2s ease-out;
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(10,10,15,.85);
  color: var(--ink-invert);
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .25s, visibility .25s, transform .25s, background .2s;
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--bg-zone-a);
  border-color: var(--accent-pink);
}

.back-top::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: translate(-50%, -45%) rotate(45deg);
}

/* ---------- 21. TOC 跟随 ---------- */
[data-toc-link] {
  color: rgba(255,255,255,.65);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 10px;
  font-size: 14px;
  transition: color .2s, border-color .2s;
}

[data-toc-link]:hover {
  color: var(--ink-invert);
}

[data-toc-link].is-active {
  color: var(--accent-pink);
  border-left-color: var(--accent-pink);
}

/* ---------- 22. 响应式 ---------- */
@media (max-width: 1024px) {
  .site-nav {
    gap: 2px;
    padding: 3px;
  }

  .nav-link {
    padding: 7px 10px;
    font-size: 13px;
  }

  .header-inner {
    gap: 10px;
    padding: 12px 20px;
  }

  .footer-inner {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .header-search-text {
    display: none;
  }

  .header-search {
    padding: 9px;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 990;
    margin: 0;
    padding: 24px 20px 40px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(10,10,15,.97);
    border-radius: 0;
    border: 0;
    transform: translateX(100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
    height: calc(100vh - 100%);
  }

  .site-nav[data-open="true"] {
    transform: translateX(0);
    box-shadow: 0 0 80px rgba(0,0,0,.4);
  }

  .nav-link,
  .nav-link:nth-child(2n) {
    display: block;
    padding: 14px 16px;
    font-size: 16px;
    transform: none;
    border-radius: 8px;
    background: rgba(255,255,255,.04);
  }

  .nav-link > span {
    transform: none;
  }

  .nav-link:hover,
  .nav-link[aria-current="page"],
  .nav-link[aria-current="page"]:hover {
    transform: none;
  }

  .top-strip-inner {
    padding: 4px 16px;
    font-size: 11px;
  }

  .header-inner {
    padding: 10px 16px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    font-size: 22px;
  }

  .brand-text strong {
    font-size: 18px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .section {
    padding: 48px 0;
  }
}

@media (max-width: 640px) {
  .top-strip-meta {
    display: none;
  }

  .brand-tagline {
    display: none;
  }

  .footer-addr {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 40px 20px 32px;
  }

  .footer-brand {
    grid-column: 1;
  }

  .footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
  }

  .tile-matrix {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
  }

  .list-row {
    grid-template-columns: 32px 1fr auto;
    padding: 12px;
  }

  .list-row .badge {
    display: none;
  }

  .back-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }
}