/* ============================================================
   site.css — 新葡萄棋牌 共享外壳与通用组件
   深色导轨 / 精密网格 / 等宽索引 / 直角细线
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
:where(h1, h2, h3, h4) { line-height: 1.16; font-weight: 900; }
[hidden] { display: none !important; }

:root {
  --ink-900: #0A0710;
  --paper-050: #F7F4FA;
  --grape-700: #6B2E8A;
  --grape-950: #2A0E38;
  --grape-300: #C09BDD;
  --green-500: #8BC34A;
  --blue-500: #2E6BE6;
  --blue-700: #1F4FB8;
  --gold-400: #E8B14A;
  --gray-500: #6E6675;
  --coral-500: #C24A5A;

  --line-dark: rgba(192, 155, 221, 0.22);
  --line-dark-soft: rgba(192, 155, 221, 0.13);
  --line-light: rgba(10, 7, 16, 0.14);
  --line-light-soft: rgba(10, 7, 16, 0.08);

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --rail-w: 104px;
  --shell-x: clamp(20px, 5vw, 56px);
  --maxw: 1280px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--ink-900);
  background-color: var(--paper-050);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hairline {
  display: block;
  height: 1px;
  border: 0;
  background: var(--line-light);
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--blue-500);
  outline-offset: 3px;
  border-radius: 0;
}

/* ---------- 阅读进度 ---------- */
.read-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 200;
  background: rgba(192, 155, 221, 0.2);
  pointer-events: none;
}
.read-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--grape-700) 0%, var(--blue-500) 62%, var(--green-500) 100%);
  transition: width 0.14s linear;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 210;
  padding: 12px 18px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  background: var(--ink-900);
  color: var(--gold-400);
  font-size: 14px;
  font-weight: 700;
  border: 1px solid var(--gold-400);
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, #1B0A26 0%, var(--ink-900) 100%);
  color: var(--paper-050);
  border-bottom: 1px solid var(--line-dark);
}

.site-header__top {
  position: relative;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 8px var(--shell-x);
  background: linear-gradient(180deg, #1B0A26 0%, #150820 100%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  background: var(--grape-700);
  color: var(--gold-400);
  font-size: 17px;
  font-weight: 900;
  line-height: 1;
  border: 1px solid rgba(232, 177, 74, 0.55);
  flex: none;
}
.brand__text { display: block; }
.brand__name {
  display: block;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper-050);
  line-height: 1.2;
}
.brand__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--grape-300);
  text-transform: uppercase;
}

.issue-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  min-height: 44px;
  padding: 0 10px;
  border: 1px solid rgba(232, 177, 74, 0.45);
  background: rgba(232, 177, 74, 0.07);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--gold-400);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.issue-badge:hover { border-color: var(--gold-400); background: rgba(232, 177, 74, 0.16); }
.issue-badge__dot {
  width: 6px; height: 6px;
  background: var(--green-500);
  box-shadow: 0 0 8px rgba(139, 195, 74, 0.9);
  flex: none;
}
.issue-badge__label { color: rgba(247, 244, 250, 0.72); }
.issue-badge__num { color: var(--gold-400); font-weight: 700; }

/* ---- 导航（手机：全屏抽屉） ---- */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 84px var(--shell-x) calc(120px + env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  background: linear-gradient(170deg, #1B0A26 0%, var(--ink-900) 70%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.2s var(--ease), transform 0.28s var(--ease), visibility 0.28s var(--ease);
}
.site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-nav__list { display: flex; flex-direction: column; }
.site-nav__item { display: block; }

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 48px;
  padding: 10px 6px;
  border-bottom: 1px solid var(--line-dark-soft);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper-050);
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.site-nav__link:hover { color: var(--gold-400); }
.site-nav__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--grape-300);
}
.site-nav__link[aria-current="page"] { color: var(--gold-400); }
.site-nav__link[aria-current="page"] .site-nav__idx { color: var(--green-500); }

.site-nav__foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
}
.site-nav__note {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(192, 155, 221, 0.75);
}
.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  align-self: flex-start;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper-050);
  background: var(--grape-700);
  border: 1px solid rgba(232, 177, 74, 0.35);
  transition: background-color 0.18s var(--ease);
}
.site-nav__cta:hover { background: #54226C; }

/* ---- 手机底部五格 ---- */
.nav-dock {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 110;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: linear-gradient(180deg, var(--grape-950) 0%, var(--ink-900) 100%);
  border-top: 1px solid var(--line-dark);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.nav-dock__link,
.nav-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: 56px;
  padding: 6px 2px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--grape-300);
  border-right: 1px solid var(--line-dark-soft);
  transition: color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.nav-dock__link:last-of-type { border-right: 0; }
.nav-dock__link:hover { color: var(--paper-050); }
.nav-dock__link[aria-current="page"] { color: var(--paper-050); background: rgba(107, 46, 138, 0.4); }
.nav-dock__idx {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}
.nav-dock__link[aria-current="page"] .nav-dock__idx { color: var(--gold-400); }
.nav-dock__label { line-height: 1.1; }

.nav-toggle { border-right: 0; }
.nav-toggle:focus-visible { outline-offset: -3px; }
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 18px;
}
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle__text { line-height: 1; }
.nav-toggle[aria-expanded="true"] { color: var(--gold-400); background: rgba(107, 46, 138, 0.45); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

@media (max-width: 767px) {
  body.is-nav-open { overflow: hidden; }
  .site-footer { padding-bottom: calc(84px + env(safe-area-inset-bottom, 0px)); }
}

/* ---- 平板：顶部横排导航 ---- */
@media (min-width: 768px) and (max-width: 1079px) {
  .site-header { background: linear-gradient(180deg, #1B0A26 0%, var(--ink-900) 100%); }
  .site-header__top { min-height: 64px; }
  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    display: block;
    padding: 0 var(--shell-x);
    overflow-x: auto;
    overflow-y: hidden;
    border-top: 1px solid var(--line-dark-soft);
    background: transparent;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
  }
  .site-nav__list { flex-direction: row; min-width: max-content; }
  .site-nav__item { border: 0; }
  .site-nav__link {
    min-height: 52px;
    padding: 0 16px;
    align-items: center;
    gap: 8px;
    border-bottom: 2px solid transparent;
    border-right: 1px solid var(--line-dark-soft);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.04em;
  }
  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--green-500);
    background: linear-gradient(180deg, rgba(107, 46, 138, 0.55), rgba(107, 46, 138, 0.12));
  }
  .site-nav__foot { display: none; }
  .nav-dock { display: none; }
}

/* ---- 桌面：左侧竖导轨 ---- */
@media (min-width: 1080px) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    border-bottom: 0;
    border-right: 1px solid var(--line-dark);
    background: linear-gradient(180deg, var(--grape-950) 0%, #150620 42%, var(--ink-900) 100%);
  }
  .site-header__top {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    min-height: 0;
    padding: 18px 0 14px;
    background: transparent;
    border-bottom: 1px solid var(--line-dark-soft);
  }
  .brand { flex-direction: column; gap: 12px; }
  .brand__text { display: flex; }
  .brand__name {
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-size: 15px;
    letter-spacing: 0.24em;
    line-height: 1;
  }
  .brand__sub { display: none; }

  .issue-badge {
    margin-left: 0;
    flex-direction: column;
    gap: 4px;
    width: 76px;
    min-height: 0;
    padding: 8px 4px;
    font-size: 10px;
    text-align: center;
  }
  .issue-badge__label { font-size: 10px; }

  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    flex: 1;
    min-height: 0;
    display: flex;
    padding: 6px 0;
    overflow-y: auto;
    overflow-x: hidden;
    background: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: none;
    scrollbar-width: none;
  }
  .site-nav::-webkit-scrollbar { width: 0; height: 0; }
  .site-nav__list { flex-direction: column; justify-content: center; flex: 1; }
  .site-nav__item { border-bottom: 1px solid var(--line-dark-soft); }
  .site-nav__item:first-child { border-top: 1px solid var(--line-dark-soft); }
  .site-nav__link {
    flex-direction: column;
    align-items: center;
    gap: 7px;
    min-height: 0;
    padding: 12px 0;
    border-bottom: 0;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.2em;
    box-shadow: inset 2px 0 0 transparent;
  }
  .site-nav__label {
    writing-mode: vertical-rl;
    text-orientation: upright;
    line-height: 1.1;
  }
  .site-nav__idx { font-size: 9px; }
  .site-nav__link:hover { background: rgba(107, 46, 138, 0.28); }
  .site-nav__link[aria-current="page"] {
    color: var(--paper-050);
    background: linear-gradient(90deg, rgba(107, 46, 138, 0.9) 0%, rgba(107, 46, 138, 0.16) 100%);
    box-shadow: inset 2px 0 0 var(--green-500);
  }
  .site-nav__link[aria-current="page"] .site-nav__idx { color: var(--gold-400); }

  .site-nav__foot {
    margin-top: 0;
    gap: 8px;
    padding: 12px 10px 4px;
    border-top: 1px solid var(--line-dark-soft);
    align-items: center;
  }
  .site-nav__note { display: none; }
  .site-nav__cta {
    align-self: stretch;
    min-height: 40px;
    padding: 6px 8px;
    font-size: 11px;
    line-height: 1.3;
    text-align: center;
  }
  .nav-dock { display: none; }
}

@media (min-width: 1080px) and (max-height: 820px) {
  .site-nav__link { padding: 8px 0; font-size: 12px; }
  .site-nav__idx { font-size: 8px; }
  .brand__name { font-size: 14px; }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 64px) var(--shell-x) 20px;
  color: var(--paper-050);
  background: linear-gradient(160deg, var(--grape-950) 0%, #150620 46%, var(--ink-900) 100%);
  border-top: 1px solid rgba(192, 155, 221, 0.3);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(192, 155, 221, 0.07) 0 1px, transparent 1px 25%),
    repeating-linear-gradient(0deg, rgba(192, 155, 221, 0.05) 0 1px, transparent 1px 72px);
}

.footer__grid {
  position: relative;
  display: grid;
  gap: 30px;
  max-width: var(--maxw);
  margin-inline: auto;
}

.footer__col { min-width: 0; }
.footer__col--brand { border-left: 2px solid var(--grape-700); padding-left: 14px; }

.footer__mark {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--paper-050);
}
.footer__tagline {
  margin-top: 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--gold-400);
  letter-spacing: 0.04em;
}
.footer__note {
  margin-top: 10px;
  max-width: 22em;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(247, 244, 250, 0.68);
}
.footer__mono {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--grape-300);
}

.footer__title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--paper-050);
  border-bottom: 1px solid var(--line-dark);
}
.footer__title span {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--gold-400);
}

.footer__list { display: flex; flex-direction: column; }
.footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: rgba(247, 244, 250, 0.82);
  transition: color 0.16s var(--ease), padding-left 0.16s var(--ease);
}
.footer__list a:hover,
.footer__list a:focus-visible { color: var(--gold-400); padding-left: 6px; }

.footer__contact { display: flex; flex-direction: column; }
.footer__contact-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-dark-soft);
}
.footer__label {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--grape-300);
}
.footer__value {
  font-size: 13px;
  line-height: 1.6;
  word-break: break-all;
  color: rgba(247, 244, 250, 0.9);
  align-self: center;
}
.footer__hours {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(192, 155, 221, 0.8);
}

.copy-btn {
  align-self: center;
  min-height: 44px;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--grape-300);
  border: 1px solid var(--line-dark);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.copy-btn:hover { color: var(--ink-900); background: var(--green-500); border-color: var(--green-500); }

.copy-status {
  position: fixed;
  left: 50%;
  bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  z-index: 205;
  transform: translate(-50%, 8px);
  margin: 0;
  padding: 10px 16px;
  max-width: calc(100vw - 40px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--green-500);
  border: 1px solid #6E9A34;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
}
.copy-status[data-visible] { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

.footer__base {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 18px;
  max-width: var(--maxw);
  margin: 36px auto 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(192, 155, 221, 0.78);
  text-align: center;
}
.footer__base-mono { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; }

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 30px; }
  .footer__base { justify-content: flex-start; text-align: left; }
}
@media (min-width: 1080px) {
  .footer__grid { grid-template-columns: 1.35fr 0.9fr 0.9fr 1.35fr; gap: 40px; }
  .footer__list a { min-height: 38px; }
  .copy-status { bottom: 40px; }
}

/* ============================================================
   通用排版与组件
   ============================================================ */
#main-content { outline: none; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--shell-x);
}

.site-main { display: block; }

.band { position: relative; }
.band--paper { background: var(--paper-050); color: var(--ink-900); }
.band--ink { background: var(--ink-900); color: var(--paper-050); }
.band--grape {
  background: linear-gradient(155deg, var(--grape-950) 0%, #180724 48%, var(--ink-900) 100%);
  color: var(--paper-050);
}
.band--ink .section__title,
.band--grape .section__title { color: var(--paper-050); }
.band--ink .section__lede,
.band--grape .section__lede { color: rgba(247, 244, 250, 0.7); }
.band--ink .section__num,
.band--grape .section__num { color: var(--gold-400); }
.band--ink .chip,
.band--grape .chip { color: var(--paper-050); border-color: var(--line-dark); }
.band--ink .data-list__label,
.band--grape .data-list__label { color: rgba(192, 155, 221, 0.85); }
.band--ink .data-list__bar,
.band--grape .data-list__bar { background: rgba(192, 155, 221, 0.22); }

.breadcrumb { padding-block: 14px 0; }
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}
.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--grape-300);
}
.breadcrumb a { color: var(--blue-700); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--gray-500); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grape-700);
}
.eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  background: var(--grape-700);
  flex: none;
}
.band--ink .eyebrow,
.band--grape .eyebrow { color: var(--gold-400); }
.band--ink .eyebrow::before,
.band--grape .eyebrow::before { background: var(--gold-400); }

.section {
  padding-block: clamp(36px, 6vw, 84px);
  border-top: 1px solid var(--line-light);
}
.band--ink .section,
.band--grape .section { border-top-color: var(--line-dark); }
.section:first-child { border-top: 0; }

.section__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 4vw, 40px);
  padding-left: 14px;
  border-left: 3px solid var(--grape-700);
}
.section__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grape-700);
}
.section__title {
  font-size: clamp(26px, 4.6vw, 44px);
  letter-spacing: -0.01em;
}
.section__lede {
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-500);
}

.grid-12 { display: grid; gap: 20px; }
@media (min-width: 768px) {
  .grid-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }
  .span-4 { grid-column: span 4; }
  .span-5 { grid-column: span 5; }
  .span-6 { grid-column: span 6; }
  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }
  .span-12 { grid-column: span 12; }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: #FFFFFF;
  border: 1px solid var(--line-light);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.band--ink .card,
.band--grape .card {
  background: rgba(247, 244, 250, 0.04);
  border-color: var(--line-dark);
}
.card:hover { border-color: var(--grape-700); }
.card:focus-within { border-color: var(--blue-500); }
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--gray-500);
}
.band--ink .card__meta,
.band--grape .card__meta { color: rgba(192, 155, 221, 0.85); }
.card__title { font-size: 19px; line-height: 1.4; font-weight: 700; }
.card__text { font-size: 14px; line-height: 1.7; color: var(--gray-500); }
.band--ink .card__text,
.band--grape .card__text { color: rgba(247, 244, 250, 0.7); }
.card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line-light-soft);
  font-size: 13px;
  color: var(--grape-700);
}
.band--ink .card__foot,
.band--grape .card__foot { border-top-color: var(--line-dark-soft); color: var(--gold-400); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--ink-900);
  background: transparent;
  border: 1px solid var(--line-light);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}
.chip:hover { border-color: var(--grape-700); }
.chip[aria-pressed="true"] {
  color: var(--paper-050);
  background: var(--grape-700);
  border-color: var(--grape-700);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn--primary { background: var(--grape-700); color: var(--paper-050); }
.btn--primary:hover { background: #54226C; }
.btn--line { color: var(--grape-700); border-color: var(--grape-700); }
.btn--line:hover { background: var(--grape-700); color: var(--paper-050); }
.btn--ghost { color: var(--paper-050); border-color: var(--line-dark); }
.btn--ghost:hover { background: rgba(192, 155, 221, 0.16); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  border: 1px solid currentColor;
  color: var(--gray-500);
}
.tag--green { color: #5C8B24; border-color: var(--green-500); background: rgba(139, 195, 74, 0.14); }
.tag--gold { color: #A97515; border-color: var(--gold-400); background: rgba(232, 177, 74, 0.14); }
.tag--blue { color: var(--blue-700); border-color: var(--blue-500); background: rgba(46, 107, 230, 0.1); }
.band--ink .tag--green, .band--grape .tag--green { color: var(--green-500); }
.band--ink .tag--gold, .band--grape .tag--gold { color: var(--gold-400); }
.band--ink .tag--blue, .band--grape .tag--blue { color: #7FA6F5; }

.data-list { display: flex; flex-direction: column; gap: 16px; }
.data-list__row { display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; }
.data-list__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--gold-400);
}
.data-list__label { font-size: 13px; letter-spacing: 0.04em; color: var(--gray-500); align-self: end; }
.data-list__bar {
  grid-column: 1 / -1;
  height: 2px;
  margin-top: 6px;
  background: var(--line-light);
  overflow: hidden;
}
.data-list__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--grape-700) 0%, var(--green-500) 100%);
}

.prose { max-width: 34em; font-size: 16px; line-height: 1.75; }
.prose > * + * { margin-top: 1em; }
.prose h2 { font-size: 24px; margin-top: 1.8em; letter-spacing: -0.01em; }
.prose h3 { font-size: 18px; margin-top: 1.5em; }
.prose ul, .prose ol { padding-left: 1.1em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose li::marker { color: var(--grape-700); }
.prose a { color: var(--blue-700); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { font-weight: 700; }
.prose blockquote {
  padding: 12px 0 12px 16px;
  border-left: 3px solid var(--grape-700);
  font-size: 15px;
  color: var(--gray-500);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 5px;
  background: rgba(107, 46, 138, 0.1);
}
.band--ink .prose, .band--grape .prose { color: rgba(247, 244, 250, 0.85); }
.band--ink .prose h2, .band--grape .prose h2,
.band--ink .prose h3, .band--grape .prose h3 { color: var(--paper-050); }
.band--ink .prose a, .band--grape .prose a { color: #9FBEF8; }
.band--ink .prose li::marker, .band--grape .prose li::marker { color: var(--gold-400); }

/* 图片容器（页面阶段放 <img class="media__img">） */
.media { position: relative; margin: 0; }
.media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-light);
  background: linear-gradient(145deg, var(--grape-950) 0%, #1A0A26 55%, var(--ink-900) 100%);
}
.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(192, 155, 221, 0.16) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(192, 155, 221, 0.1) 0 1px, transparent 1px 44px);
  mix-blend-mode: screen;
}
.media--wide .media__frame { aspect-ratio: 16 / 9; }
.media--tall .media__frame { aspect-ratio: 3 / 4; }
.media--square .media__frame { aspect-ratio: 1 / 1; }
.media__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media__tag {
  position: absolute;
  top: 0; left: 0;
  z-index: 2;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--gold-400);
  background: var(--ink-900);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}
.media__caption {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray-500);
}
.band--ink .media__caption,
.band--grape .media__caption { color: rgba(192, 155, 221, 0.85); }

/* TOC 章节高亮（配合 data-toc / data-chapter） */
[data-toc] a.is-active {
  color: var(--grape-700);
  font-weight: 700;
}
.band--ink [data-toc] a.is-active,
.band--grape [data-toc] a.is-active { color: var(--gold-400); }

/* 滚动淡入 */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
}
html.has-js [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .read-progress__bar { transition: none; }
  html.has-js [data-reveal] { opacity: 1; transform: none; }
  .skip-link { transition: none; }
}