/* ============================================================
   百乐门棋牌 · 全站共享样式 /assets/site.css
   结构：重置 → 变量 → 中文排版 → 通用组件 → 页头 → 页脚 → 响应式
   ============================================================ */

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

:root {
  --ink: #0E2A24;
  --ink-deep: #071B17;
  --pine: #1F5A4A;
  --sage: #8FA79E;
  --gold: #D8B56A;
  --gold-soft: #F0D9A8;
  --cinnabar: #C4473A;
  --ivory: #F6F0E4;
  --paper: #FFFBF3;
  --coal: #1B1C1A;
  --neon: #6FD3C7;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, "SFMono-Regular", "Courier New", monospace;

  --shell: 1280px;
  --gutter: clamp(18px, 4vw, 48px);
  --line: rgba(216, 181, 106, .26);
  --line-soft: rgba(143, 167, 158, .20);
  --radius: 3px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
strong { font-weight: 600; color: var(--gold-soft); }

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

/* ---------- 中文排版与通用布局 ---------- */

.shell {
  width: min(100% - var(--gutter) * 2, var(--shell));
  margin-inline: auto;
}

.section { padding-block: clamp(40px, 6vw, 80px); }
.section--tight { padding-block: clamp(24px, 3.5vw, 44px); }

.stack { display: grid; gap: 1rem; align-content: start; }

.prose {
  max-width: 68ch;
  color: #D7E2DC;
  font-size: 1rem;
  line-height: 1.8;
}
.prose > * + * { margin-top: 1em; }
.prose h2, .prose h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--gold-soft);
}
.prose a { color: var(--gold-soft); border-bottom: 1px solid var(--line); }
.prose a:hover { border-bottom-color: var(--gold); }

.display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--ivory);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--ivory);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: .7;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .72em 1.35em;
  font-family: var(--font-body);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .06em;
  line-height: 1.2;
  border: 1px solid transparent;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease),
              background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--gold {
  background: linear-gradient(140deg, var(--gold-soft), var(--gold) 55%, #B4904A);
  color: #16261F;
  border-color: rgba(255, 251, 243, .35);
  box-shadow: 0 12px 26px -16px rgba(216, 181, 106, .95);
}
.btn--gold:hover { box-shadow: 0 18px 30px -16px rgba(216, 181, 106, 1); }

.btn--ghost {
  background: rgba(31, 90, 74, .28);
  color: var(--gold-soft);
  border-color: var(--line);
}
.btn--ghost:hover { background: rgba(31, 90, 74, .5); border-color: var(--gold); }

.btn--ink {
  background: var(--ink);
  color: var(--ivory);
  border-color: rgba(27, 28, 26, .35);
}
.btn--ink:hover { background: var(--pine); }

/* ---------- 标签与印章 ---------- */

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35em;
  padding: .24rem .62rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: .72rem;
  letter-spacing: .12em;
  line-height: 1.6;
  color: var(--gold-soft);
  background: rgba(216, 181, 106, .08);
  white-space: nowrap;
}
.tag--red {
  border-color: rgba(196, 71, 58, .55);
  color: #F0B0A6;
  background: rgba(196, 71, 58, .14);
}
.tag--ink {
  border-color: rgba(27, 28, 26, .28);
  color: var(--coal);
  background: rgba(27, 28, 26, .04);
}

.stamp {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .28rem .6rem;
  border: 1px solid rgba(196, 71, 58, .55);
  border-radius: 2px;
  font-size: .7rem;
  letter-spacing: .16em;
  color: #E8A79D;
  background: rgba(196, 71, 58, .1);
}

/* ---------- 纸张面板 ---------- */

.paper {
  position: relative;
  padding: clamp(18px, 3vw, 34px);
  background: var(--paper);
  color: var(--coal);
  border: 1px solid rgba(27, 28, 26, .18);
  border-radius: var(--radius);
  box-shadow: 7px 7px 0 -2px rgba(216, 181, 106, .26), 0 26px 50px -36px rgba(0, 0, 0, .85);
}
.paper .prose { color: #2A2B28; }
.paper .prose h2, .paper .prose h3 { color: var(--ink); }
.paper .prose a { color: var(--pine); border-bottom-color: rgba(31, 90, 74, .35); }
.paper :focus-visible { outline-color: var(--pine); }

/* ---------- 图片容器基座 ---------- */

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 100% at 12% 0%, rgba(111, 211, 199, .16), transparent 60%),
    linear-gradient(150deg, #123A31, #0B2620 60%, #143B32);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame__cap {
  position: absolute;
  left: .6rem;
  bottom: .6rem;
  padding: .22rem .55rem;
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--gold-soft);
  background: rgba(6, 22, 18, .8);
  border: 1px solid var(--line);
  border-radius: 2px;
}

/* ---------- 面包屑 ---------- */

.crumb-trail {
  padding-block: 1.1rem 0;
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--sage);
}
.crumb-trail__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
}
.crumb-trail__list li { display: inline-flex; align-items: center; gap: .55rem; }
.crumb-trail__list li + li::before {
  content: "／";
  color: rgba(143, 167, 158, .5);
}
.crumb-trail__list a { color: var(--sage); transition: color .18s var(--ease); }
.crumb-trail__list a:hover { color: var(--gold-soft); }
.crumb-trail__list [aria-current="page"] { color: var(--gold-soft); }

/* ---------- 网格 ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
}

.grid-bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

/* ---------- 入场显隐（脚本启用时才隐藏） ---------- */

.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.js-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   页头 · 命令甲板
   ============================================================ */

.pm-deck {
  position: sticky;
  top: 0;
  z-index: 60;
  isolation: isolate;
  background: linear-gradient(180deg, #0B231E, #0E2A24 62%, #103029);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 16px 32px -26px rgba(0, 0, 0, .95);
}
.pm-deck::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 130% at 10% -10%, rgba(111, 211, 199, .15), transparent 62%),
    radial-gradient(48% 120% at 92% 110%, rgba(196, 71, 58, .13), transparent 66%);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 100;
  padding: .7rem 1.2rem;
  transform: translate(-50%, -130%);
  background: var(--gold-soft);
  color: #16261F;
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .06em;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: transform .18s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* 索引条 */
.pm-rail { display: none; }

.pm-rail__line {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--sage);
}
.pm-rail__meta { display: flex; align-items: center; gap: 1.4rem; }
.pm-rail__chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--gold-soft);
}
.pm-rail__chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
}
.pm-rail__link {
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--sage);
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.pm-rail__link:hover { color: var(--gold-soft); border-bottom-color: var(--gold); }

/* 主命令栏 */
.pm-bar {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  width: min(100% - var(--gutter) * 2, var(--shell));
  margin-inline: auto;
  min-height: 64px;
  padding-block: .7rem;
}

.pm-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  flex: 0 0 auto;
}
.pm-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: #16261F;
  background: linear-gradient(150deg, var(--gold-soft), var(--gold) 58%, #B08E45);
  box-shadow: inset 0 0 0 1px rgba(255, 251, 243, .28), 0 10px 20px -14px rgba(216, 181, 106, .95);
}
.pm-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.pm-brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: .12em;
  color: var(--ivory);
}
.pm-brand__sub {
  margin-top: .22rem;
  font-size: .64rem;
  letter-spacing: .26em;
  color: var(--sage);
}

/* 移动菜单按钮 */
.pm-menu-btn {
  display: none;
  align-items: center;
  gap: .6rem;
  margin-left: auto;
  padding: .52rem .8rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--gold-soft);
  background: rgba(31, 90, 74, .35);
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.pm-menu-btn__bars { display: grid; gap: 5px; width: 16px; }
.pm-menu-btn__bars i {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s var(--ease);
}
.pm-menu-btn__label { line-height: 1; }
.pm-menu-btn[aria-expanded="true"] .pm-menu-btn__bars i:first-child { transform: translateY(3.25px) rotate(45deg); }
.pm-menu-btn[aria-expanded="true"] .pm-menu-btn__bars i:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* 桌面导航 */
.pm-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  margin-left: auto;
}
.pm-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 20px);
}
.pm-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: .42em;
  padding: .42rem .12rem;
  font-size: .92rem;
  letter-spacing: .06em;
  color: #CBD8D2;
  transition: color .18s var(--ease);
}
.pm-nav__idx {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .02em;
  color: rgba(216, 181, 106, .6);
  transition: color .18s var(--ease);
}
.pm-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-soft));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease);
}
.pm-nav__list a:hover,
.pm-nav__list a[aria-current="page"] { color: var(--gold-soft); }
.pm-nav__list a:hover .pm-nav__idx,
.pm-nav__list a[aria-current="page"] .pm-nav__idx { color: var(--gold); }
.pm-nav__list a:hover::after,
.pm-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.pm-nav__cta { flex: 0 0 auto; font-size: .84rem; padding: .6em 1.05em; }

/* 阅读进度 */
.pm-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(143, 167, 158, .14);
  pointer-events: none;
}
.pm-progress > span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--neon), var(--gold) 55%, var(--cinnabar));
}

/* ============================================================
   页脚 · 落款
   ============================================================ */

.pm-foot {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  overflow: hidden;
  color: #C3D2CB;
  background: linear-gradient(180deg, #0A211C, #071814 78%);
  border-top: 1px solid var(--line);
}
.pm-foot::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(52% 90% at 84% 0%, rgba(216, 181, 106, .1), transparent 62%),
    radial-gradient(42% 80% at 4% 100%, rgba(111, 211, 199, .08), transparent 60%);
}
.pm-foot__shell {
  position: relative;
  width: min(100% - var(--gutter) * 2, var(--shell));
  margin-inline: auto;
  padding-top: clamp(40px, 6vw, 72px);
}

.pm-foot__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
}

.pm-foot__logo {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
}
.pm-foot__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .95rem;
  color: #16261F;
  background: linear-gradient(150deg, var(--gold-soft), var(--gold) 58%, #B08E45);
  box-shadow: inset 0 0 0 1px rgba(255, 251, 243, .25);
}
.pm-foot__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: .14em;
  color: var(--ivory);
}
.pm-foot__summary {
  max-width: 32ch;
  margin-top: 1rem;
  font-size: .9rem;
  line-height: 1.85;
  color: #A6BCB2;
}
.pm-foot__hours {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--gold-soft);
}
.pm-foot__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
}

.pm-foot__title {
  margin-bottom: 1rem;
  padding-bottom: .7rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .16em;
  color: var(--gold-soft);
  border-bottom: 1px solid var(--line-soft);
}
.pm-foot__list li + li { margin-top: .55rem; }
.pm-foot__list a {
  display: inline-block;
  font-size: .88rem;
  color: #A6BCB2;
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}
.pm-foot__list a:hover { color: var(--gold-soft); padding-left: .35rem; }

.pm-foot__facts { display: grid; gap: .85rem; }
.pm-foot__facts li { display: grid; gap: .14rem; }
.pm-foot__label {
  font-size: .68rem;
  letter-spacing: .16em;
  color: #6F857D;
}
.pm-foot__value {
  font-size: .86rem;
  line-height: 1.6;
  color: #B9CAC2;
  overflow-wrap: anywhere;
}
.pm-foot__value--mono { font-family: var(--font-mono); letter-spacing: .04em; }

.pm-foot__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .6rem 1.6rem;
  margin-top: clamp(32px, 5vw, 56px);
  padding-block: 1.2rem;
  border-top: 1px solid var(--line-soft);
  font-size: .76rem;
  letter-spacing: .06em;
  color: #7E938B;
}
.pm-foot__copy { color: #93A9A0; }
.pm-foot__icp {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .02em;
  color: #93A9A0;
}

/* ============================================================
   响应式
   ============================================================ */

@media (min-width: 600px) {
  .grid-bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

@media (min-width: 900px) {
  .split { grid-template-columns: 7fr 5fr; }
  .split--flip { grid-template-columns: 5fr 7fr; }
}

@media (min-width: 980px) {
  .pm-bar { min-height: 68px; padding-block: .85rem; }
  .pm-nav { gap: clamp(16px, 2vw, 30px); }
}

@media (min-width: 1024px) {
  html { scroll-padding-top: 108px; }
  .pm-rail {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    width: min(100% - var(--gutter) * 2, var(--shell));
    margin-inline: auto;
    padding-block: .5rem;
    border-bottom: 1px solid var(--line-soft);
  }
  .pm-bar { padding-block: .9rem; }
  .grid-bento { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid-bento .span-2 { grid-column: span 2; }
  .pm-foot__grid { grid-template-columns: 1.5fr repeat(2, minmax(0, .85fr)) 1.15fr; }
  .pm-foot__base { font-size: .78rem; }
}

@media (max-width: 979px) {
  .pm-menu-btn { display: inline-flex; }

  .pm-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    gap: .2rem;
    margin-left: 0;
    padding: 1rem var(--gutter) 1.6rem;
    max-height: calc(100dvh - 4.5rem);
    overflow-y: auto;
    background: linear-gradient(180deg, #0C2620, #0A1F1A 82%);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px -30px #000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  }
  .pm-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .pm-nav__list { display: grid; gap: 0; }
  .pm-nav__list a {
    display: flex;
    align-items: center;
    gap: .8rem;
    padding: .85rem .2rem;
    font-size: 1rem;
    border-bottom: 1px solid var(--line-soft);
  }
  .pm-nav__list a::after { display: none; }
  .pm-nav__list a[aria-current="page"] { color: var(--gold-soft); }
  .pm-nav__list a[aria-current="page"] .pm-nav__idx { color: var(--gold); }
  .pm-nav__cta { justify-self: start; margin-top: 1.1rem; }

  .pm-deck[data-open] .pm-menu-btn {
    background: var(--pine);
    border-color: var(--gold);
    color: var(--gold-soft);
  }
}

@media (max-width: 599px) {
  .media-frame:not(.media-frame--square):not(.media-frame--tall) { aspect-ratio: 4 / 3; }
  .pm-brand__sub { display: none; }
  .pm-foot__base { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js-reveal [data-reveal] { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
}