/* ============================================================
   HAHABET棋牌 — /assets/site.css
   共享：reset / tokens / 排版 / 头部侧轨 / 页脚 / 通用组件
   ============================================================ */

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

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

body,
h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote { margin: 0; }

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

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

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

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; cursor: pointer; }

/* ---------- tokens ---------- */
:root {
  --ink: #061A16;
  --felt: #0D2E26;
  --felt-2: #0A241F;
  --line: #1E4A3C;
  --gold: #E8B45A;
  --gold-soft: #F6D89B;
  --violet: #8C5CFF;
  --cyan: #3DE0D0;
  --paper: #F4EFE4;
  --coral: #FF6B6B;
  --shade: #020A08;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "Noto 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, monospace;

  --rail-w: 88px;
  --header-h: 64px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ---------- base ---------- */
body {
  min-height: 100vh;
  padding-left: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  background-color: var(--ink);
  background-image:
    radial-gradient(900px 520px at 84% -8%, rgba(140, 92, 255, 0.13), transparent 62%),
    radial-gradient(760px 420px at 4% 2%, rgba(61, 224, 208, 0.07), transparent 60%),
    linear-gradient(180deg, #071E19 0%, #061A16 48%, #04120F 100%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

h1 { font-size: clamp(34px, 6vw, 64px); }
h2 { font-size: clamp(26px, 3.6vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 26px); }
h4 { font-size: clamp(17px, 1.6vw, 19px); }

p { overflow-wrap: break-word; }

::selection {
  background: rgba(232, 180, 90, 0.32);
  color: var(--paper);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.86);
}

.prose p + p { margin-top: 1em; }

.prose h2 {
  margin-top: 1.7em;
  margin-bottom: 0.55em;
  font-size: clamp(22px, 2.4vw, 30px);
}

.prose h3 {
  margin-top: 1.4em;
  margin-bottom: 0.45em;
  color: var(--gold-soft);
}

.prose ul,
.prose ol {
  margin: 1em 0;
  padding-left: 1.25em;
  list-style: disc;
}

.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  padding-bottom: 14px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 800;
  color: var(--paper);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(244, 239, 228, 0.55);
}

.breadcrumb a {
  color: var(--gold-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb__sep { color: var(--line); }

/* ---------- panels & tags ---------- */
.panel {
  position: relative;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(13, 46, 38, 0.92), rgba(6, 26, 22, 0.94));
}

.panel--focus {
  border-color: rgba(232, 180, 90, 0.55);
  box-shadow: 0 0 0 1px rgba(232, 180, 90, 0.22), 0 24px 60px -32px rgba(232, 180, 90, 0.5);
}

.label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244, 239, 228, 0.58);
}

.mono { font-family: var(--font-mono); }

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--cyan);
  border: 1px solid currentColor;
  border-radius: 2px;
}

.tag--gold { color: var(--gold); }
.tag--violet { color: var(--violet); }

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(61, 224, 208, 0.16);
  vertical-align: middle;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 13px;
  line-height: 1.4;
  color: rgba(244, 239, 228, 0.8);
  background: rgba(13, 46, 38, 0.6);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.chip:hover {
  color: var(--gold-soft);
  border-color: var(--gold);
}

.chip[aria-pressed="true"] {
  color: var(--gold-soft);
  border-color: var(--gold);
  background: rgba(232, 180, 90, 0.14);
}

/* ---------- media containers ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: 2px;
  background:
    radial-gradient(120% 90% at 18% 0%, rgba(232, 180, 90, 0.18), transparent 56%),
    linear-gradient(155deg, var(--felt) 0%, var(--ink) 74%);
}

.media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 52%, rgba(2, 10, 8, 0.76) 100%);
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  position: absolute;
  left: 12px;
  bottom: 10px;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold-soft);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: var(--gold-soft);
  background: rgba(13, 46, 38, 0.55);
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  transition:
    color 0.2s var(--ease),
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.btn:hover {
  color: var(--gold-soft);
  border-color: var(--gold);
  background: rgba(232, 180, 90, 0.1);
  box-shadow: 0 0 0 1px rgba(232, 180, 90, 0.18);
}

.btn--gold {
  color: #061A16;
  background: var(--gold);
  border-color: var(--gold);
}

.btn--gold:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.btn--ghost { background: transparent; }

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  color: #061A16;
  background: var(--gold);
  border-radius: 2px;
  transform: translateY(-180%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ============================================================
   头部 —— 移动端吸顶横条 + 全屏抽屉；桌面端 88px 侧边轨道
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  height: var(--header-h);
  padding: 0 16px;
  background: #061A16;
  border-bottom: 1px solid var(--line);
}

.rail__top { display: contents; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
}

.brand__mark {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border: 1px solid var(--gold);
  border-radius: 2px;
  background:
    radial-gradient(circle at 30% 28%, rgba(232, 180, 90, 0.55), transparent 62%),
    var(--felt);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(246, 216, 155, 0.85);
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 8px;
  background: var(--gold);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand__name {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold-soft);
}

.brand__sub {
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.34em;
  color: rgba(244, 239, 228, 0.72);
}

.brand--footer .brand__name { font-size: 15px; }
.brand--footer .brand__sub { font-size: 12px; }

/* 汉堡按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(13, 46, 38, 0.5);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-toggle:hover { border-color: var(--gold); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 1px;
  background: var(--gold-soft);
  transition: background 0.2s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 1px;
  background: var(--gold-soft);
  transition: top 0.25s var(--ease), transform 0.25s var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); }

/* 导航容器：移动端全屏抽屉 */
.rail__nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  padding: 18px 16px 40px;
  overflow-y: auto;
  background: linear-gradient(180deg, #0A241F 0%, #061A16 100%);
  border-top: 1px solid var(--line);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  pointer-events: none;
  transition:
    opacity 0.26s var(--ease),
    transform 0.26s var(--ease),
    visibility 0.26s linear;
}

.site-header[data-open] .rail__nav {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

.rail__list {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.rail__item { display: block; }

.rail__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 12px;
  font-size: 16px;
  line-height: 1.5;
  color: rgba(244, 239, 228, 0.88);
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.rail__link:hover {
  color: var(--gold-soft);
  background: rgba(232, 180, 90, 0.07);
}

.rail__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(244, 239, 228, 0.38);
}

.rail__label { display: block; }

.rail__link[aria-current="page"] {
  color: var(--gold-soft);
  background: rgba(232, 180, 90, 0.09);
}

.rail__link[aria-current="page"] .rail__idx { color: var(--gold); }

.rail__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: 0;
  width: 2px;
  background: var(--gold);
}

/* 抽屉内的行动按钮 */
.rail__cta {
  display: block;
  margin-top: 20px;
  padding: 15px 18px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  color: #061A16;
  background: var(--gold);
  border-radius: 2px;
  transition: background 0.2s var(--ease);
}

.rail__cta:hover { background: var(--gold-soft); }

/* 轨道底部竖排 CTA */
.rail__foot { display: none; }

.btn--rail {
  display: block;
  width: 100%;
  padding: 14px 0;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-align: center;
  color: #061A16;
  background: var(--gold);
  border: 1px solid var(--gold);
  border-radius: 2px;
  writing-mode: vertical-rl;
  text-orientation: upright;
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.btn--rail:hover {
  background: var(--gold-soft);
  box-shadow: 0 0 24px rgba(232, 180, 90, 0.38);
}

/* 滚动进度 */
.rail__progress { display: none; }

/* ---------- 桌面端：侧边轨道 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .site-header {
    position: fixed;
    top: 0;
    right: auto;
    bottom: 0;
    left: 0;
    width: var(--rail-w);
    height: auto;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 16px 0 14px;
    background: linear-gradient(180deg, #0D2E26 0%, #08211C 55%, #061A16 100%);
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .rail__top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 0 8px 14px;
  }

  .rail__top .brand {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .rail__top .brand__text { align-items: center; }
  .rail__top .brand__name { font-size: 10.5px; letter-spacing: 0.04em; }
  .rail__top .brand__sub { font-size: 10px; letter-spacing: 0.28em; }

  .nav-toggle { display: none; }

  .rail__nav {
    position: static;
    flex: 1 1 auto;
    min-height: 0;
    margin-top: 8px;
    padding: 6px 4px 0;
    overflow-y: auto;
    background: transparent;
    border-top: 1px solid var(--line);
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
  }

  .rail__link {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    padding: 11px 6px 11px 9px;
    font-size: 12px;
    line-height: 1.35;
    letter-spacing: 0;
    word-break: keep-all;
  }

  .rail__idx { font-size: 10px; }

  .rail__cta { display: none; }

  .rail__foot {
    display: block;
    flex: none;
    padding: 12px 6px 0;
  }

  .rail__progress {
    display: block;
    position: absolute;
    top: 0;
    right: -1px;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold), var(--violet));
    transform: scaleY(0);
    transform-origin: top center;
    pointer-events: none;
    opacity: 0.9;
  }
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: 96px;
  padding: 56px 20px 26px;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(760px 320px at 6% 0%, rgba(140, 92, 255, 0.12), transparent 62%),
    radial-gradient(680px 280px at 94% 8%, rgba(61, 224, 208, 0.08), transparent 64%),
    linear-gradient(180deg, #0A241F 0%, #061A16 100%);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(30, 74, 60, 0.38) 1px, transparent 1px),
    linear-gradient(0deg, rgba(30, 74, 60, 0.38) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 68%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 68%);
}

.site-footer > * {
  position: relative;
  z-index: 1;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.footer__brand { min-width: 0; }

.footer__tagline {
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--gold-soft);
}

.footer__meta {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(244, 239, 228, 0.72);
}

.footer__meta li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  overflow-wrap: anywhere;
}

.footer__meta .mono {
  flex: none;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.footer__col { min-width: 0; }

.footer__title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold);
  border-bottom: 1px solid var(--line);
}

.footer__list {
  display: grid;
  gap: 10px;
}

.footer__link {
  display: inline-block;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(244, 239, 228, 0.78);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.footer__link:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--gold);
}

.footer__now {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 239, 228, 0.7);
}

.footer__cta { margin-top: 16px; }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  max-width: var(--maxw);
  margin: 44px auto 0;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(244, 239, 228, 0.55);
  border-top: 1px solid var(--line);
}

.footer__copy,
.footer__icp { color: rgba(244, 239, 228, 0.55); }

.footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-left: auto;
}

.footer__legal-links a {
  color: rgba(244, 239, 228, 0.7);
  transition: color 0.2s var(--ease);
}

.footer__legal-links a:hover { color: var(--gold-soft); }

@media (min-width: 720px) {
  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 32px;
  }
}

@media (min-width: 1024px) {
  .container { padding: 0 40px; }

  .site-footer { padding: 76px 44px 30px; }

  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

@media (min-width: 1080px) {
  .footer__grid {
    grid-template-columns: 1.5fr 0.85fr 0.85fr 1.15fr;
    gap: 48px 36px;
  }
}

/* ============================================================
   滚动显现协议：[data-reveal]
   ============================================================ */
[data-reveal] {
  transition:
    opacity 520ms var(--ease) var(--rd, 0ms),
    transform 520ms var(--ease) var(--rd, 0ms);
}

[data-reveal].reveal-pending {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
}

[data-reveal].reveal-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   动效降级
   ============================================================ */
@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;
    scroll-behavior: auto !important;
  }

  [data-reveal],
  [data-reveal].reveal-pending {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .rail__progress { display: none; }
}