/* =========================================================
   财神棋牌 — 共享样式表 /assets/site.css
   ========================================================= */

/* ---------- 1. 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body { margin: 0; min-height: 100%; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 主色 */
  --red: #C41E28;
  --red-deep: #8F1420;
  --gold: #D8A64B;
  --gold-light: #F0CE84;
  --gold-deep: #A87A25;

  /* 结构与底色 */
  --ink: #123F35;
  --ink-deep: #0A2A23;
  --ink-soft: #1C5B4C;
  --cream: #FAF4E8;
  --cream-2: #F2E7D4;
  --surface: #FFFFFF;

  /* 文本 */
  --text: #241A16;
  --text-soft: #5B4A41;
  --text-muted: #8A7A70;
  --text-on-ink: #E8DFC9;

  /* 边界与阴影 */
  --line: rgba(18, 63, 53, 0.14);
  --line-gold: rgba(216, 166, 75, 0.5);
  --shadow-1: 0 14px 34px -22px rgba(15, 58, 49, 0.85);
  --shadow-2: 0 26px 52px -30px rgba(15, 58, 49, 0.9);

  /* 字体 */
  --font-display: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", "Noto Serif SC", "Source Han Serif SC", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Menlo, Consolas, "Roboto Mono", "Courier New", monospace;

  /* 节奏 */
  --radius-s: 12px;
  --radius-m: 18px;
  --radius-l: 24px;
  --shell: 1180px;
  --gutter: clamp(16px, 3vw, 28px);
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--cream);
  background-image:
    radial-gradient(circle at 10% 4%, rgba(216, 166, 75, 0.16), transparent 44%),
    radial-gradient(circle at 92% 2%, rgba(196, 30, 40, 0.09), transparent 42%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--ink);
}

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

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

/* ---------- 4. 布局辅助 ---------- */
.cs-wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.cs-section { padding-block: clamp(40px, 6vw, 78px); }

.cs-band {
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--red-deep), var(--red) 22%, var(--gold-light) 50%, var(--red) 78%, var(--red-deep));
}

.cs-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-deep);
}
.cs-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--red), var(--gold));
}

.cs-h2 { font-size: clamp(26px, 3.4vw, 40px); margin-top: 12px; }
.cs-h3 { font-size: clamp(19px, 2.2vw, 26px); margin-top: 10px; }

.cs-lead {
  margin-top: 14px;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: var(--text-soft);
  max-width: 62ch;
}

.cs-prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text-soft);
}
.cs-prose h2 { margin-top: 34px; font-size: clamp(21px, 2.4vw, 28px); }
.cs-prose h3 { margin-top: 26px; font-size: 19px; }
.cs-prose p + p { margin-top: 14px; }
.cs-prose ul { margin-top: 12px; display: grid; gap: 8px; }
.cs-prose li { padding-left: 20px; position: relative; }
.cs-prose li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0.36em;
  font-size: 9px;
  color: var(--gold-deep);
}
.cs-prose strong { color: var(--ink); font-weight: 700; }

.cs-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.cs-crumbs li { display: inline-flex; align-items: center; }
.cs-crumbs li::after {
  content: "/";
  margin-inline: 9px;
  color: rgba(18, 63, 53, 0.26);
}
.cs-crumbs li:last-child::after { content: ""; margin: 0; }
.cs-crumbs a { transition: color 0.2s ease; }
.cs-crumbs a:hover { color: var(--red); }
.cs-crumbs [aria-current="page"] { color: var(--ink); font-weight: 600; }

/* ---------- 5. 按钮 ---------- */
.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.cs-btn--gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #3A2708;
  box-shadow: 0 12px 24px -16px rgba(168, 122, 37, 1);
}
.cs-btn--gold:hover { transform: translateY(-1px); box-shadow: 0 16px 28px -16px rgba(168, 122, 37, 1); }
.cs-btn--red {
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  color: #FFF4DC;
  box-shadow: 0 12px 24px -16px rgba(143, 20, 32, 1);
}
.cs-btn--red:hover { transform: translateY(-1px); }
.cs-btn--ghost {
  border-color: rgba(18, 63, 53, 0.24);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
}
.cs-btn--ghost:hover { border-color: var(--gold); color: var(--red); }

/* ---------- 6. 头部 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: 0 0 14px 14px;
  background: var(--red);
  color: #FFF4DC;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-2);
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

.cs-header {
  position: sticky;
  top: 0;
  z-index: 80;
  padding: 12px clamp(10px, 2.4vw, 26px) 0;
}

.cs-header::after {
  content: "";
  position: absolute;
  inset: 0 0 -24px 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(250, 244, 232, 0.96) 0%, rgba(250, 244, 232, 0.7) 58%, rgba(250, 244, 232, 0) 100%);
}

.cs-header__bar {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.6vw, 18px);
  padding: 9px 12px 9px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-gold);
  background: rgba(252, 247, 238, 0.88);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  box-shadow: var(--shadow-1), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

/* 品牌 */
.cs-brand {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px 4px 4px;
  border-radius: 999px;
}
.cs-brand__seal {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(145deg, var(--red), var(--red-deep));
  color: var(--gold-light);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(240, 206, 132, 0.55), 0 8px 16px -10px rgba(143, 20, 32, 1);
}
.cs-brand__text { display: block; }
.cs-brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.cs-brand__tag {
  display: block;
  margin-top: 3px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--gold-deep);
}

/* 导航 */
.cs-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.cs-nav__list { display: flex; align-items: center; gap: 2px; }
.cs-nav__link {
  display: block;
  position: relative;
  padding: 9px 13px;
  border-radius: 999px;
  font-size: 14.5px;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}
.cs-nav__link:hover { color: var(--ink); background: rgba(216, 166, 75, 0.18); }
.cs-nav__link[aria-current="page"] {
  color: #FFF4DC;
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  box-shadow: 0 8px 18px -12px rgba(143, 20, 32, 1);
}
.cs-nav__link[aria-current="page"]:hover { color: #FFF4DC; }

.cs-header__cta { flex: 0 0 auto; }

/* 汉堡按钮 */
.cs-burger {
  display: none;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 14px;
  border: 1px solid rgba(18, 63, 53, 0.18);
  background: rgba(255, 255, 255, 0.6);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.cs-burger:hover { border-color: var(--gold); }
.cs-burger__bars { position: relative; display: block; width: 20px; height: 14px; }
.cs-burger__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.cs-burger__bars span:nth-child(1) { top: 0; }
.cs-burger__bars span:nth-child(2) { top: 6px; }
.cs-burger__bars span:nth-child(3) { top: 12px; }

.cs-header[data-open] .cs-burger__bars span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.cs-header[data-open] .cs-burger__bars span:nth-child(2) { opacity: 0; }
.cs-header[data-open] .cs-burger__bars span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 滚动进度光带 */
.cs-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 120;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--red-deep), var(--red) 30%, var(--gold-light) 60%, var(--gold));
  pointer-events: none;
  will-change: transform;
}

/* ---------- 7. 页脚 ---------- */
.cs-footer {
  position: relative;
  margin-top: clamp(56px, 7vw, 104px);
  color: var(--text-on-ink);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(196, 30, 40, 0.3), transparent 58%),
    radial-gradient(90% 80% at 96% 6%, rgba(216, 166, 75, 0.18), transparent 55%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
}
.cs-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--red-deep), var(--red) 18%, var(--gold-light) 50%, var(--red) 82%, var(--red-deep));
}

.cs-footer__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(38px, 5vw, 66px) var(--gutter) clamp(28px, 3.4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(24px, 3vw, 46px);
}

.cs-footer__brand { min-width: 0; }
.cs-footer .cs-brand__name { color: #F7EFDC; }
.cs-footer .cs-brand__tag { color: #E3B968; }
.cs-footer .cs-brand__seal {
  background: linear-gradient(145deg, var(--gold), var(--gold-deep));
  color: #3A1508;
  box-shadow: inset 0 0 0 1px rgba(255, 244, 220, 0.5), 0 8px 18px -12px rgba(0, 0, 0, 0.9);
}

.cs-footer__desc {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(232, 223, 201, 0.72);
}

.cs-footer__meta {
  margin-top: 20px;
  display: grid;
  gap: 9px;
  font-size: 13px;
  color: rgba(232, 223, 201, 0.72);
}
.cs-footer__meta li { padding-left: 18px; position: relative; }
.cs-footer__meta li::before {
  content: "◆";
  position: absolute;
  left: 0;
  top: 0.36em;
  font-size: 9px;
  color: var(--gold);
}

.cs-footer__col { min-width: 0; }
.cs-footer__title {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #E9C77C;
}

.cs-footer__list { display: grid; gap: 11px; font-size: 14px; }
.cs-footer__list a {
  display: inline-block;
  color: rgba(232, 223, 201, 0.82);
  transition: color 0.2s ease, transform 0.2s ease;
}
.cs-footer__list a:hover { color: var(--gold-light); transform: translateX(3px); }

.cs-footer__base {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--gutter) clamp(24px, 3vw, 34px);
  border-top: 1px solid rgba(232, 223, 201, 0.14);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: rgba(232, 223, 201, 0.6);
}
.cs-footer__legal { margin: 0; }

/* ---------- 8. 通用内容组件 ---------- */
.cs-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}
.cs-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cs-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cs-grid--sidebar { grid-template-columns: minmax(0, 1fr) minmax(260px, 320px); }

.cs-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--surface);
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: 0 18px 40px -34px rgba(15, 58, 49, 0.9);
}
.cs-card--glass {
  background: rgba(255, 255, 255, 0.62);
  border-color: var(--line-gold);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
}
.cs-card--ink {
  background: linear-gradient(150deg, var(--ink-soft), var(--ink-deep));
  border-color: rgba(216, 166, 75, 0.32);
  color: var(--text-on-ink);
}
.cs-card--ink .cs-h3,
.cs-card--ink h2,
.cs-card--ink h3 { color: #F7EFDC; }

/* 图片容器基础规则：页面阶段放入 <img> 即可 */
.cs-figure {
  position: relative;
  overflow: hidden;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-gold);
  background:
    radial-gradient(120% 100% at 20% 0%, rgba(216, 166, 75, 0.28), transparent 60%),
    linear-gradient(135deg, var(--ink-soft), var(--ink-deep));
}
.cs-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.cs-figure--wide { aspect-ratio: 21 / 9; }
.cs-figure--square { aspect-ratio: 1 / 1; }
.cs-figure--portrait { aspect-ratio: 4 / 5; }
.cs-figure__cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #F3EBD8;
  background: linear-gradient(0deg, rgba(10, 42, 35, 0.88), rgba(10, 42, 35, 0));
}

.cs-fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--surface);
  overflow: hidden;
}
.cs-fold + .cs-fold { margin-top: 12px; }
.cs-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--ink);
  transition: background-color 0.2s ease;
}
.cs-fold summary::-webkit-details-marker { display: none; }
.cs-fold summary:hover { background: rgba(216, 166, 75, 0.1); }
.cs-fold summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--red);
  transition: transform 0.22s ease;
}
.cs-fold[open] summary::after { transform: rotate(45deg); }
.cs-fold__body {
  padding: 0 20px 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}
.cs-fold[open] { border-color: var(--line-gold); }

/* ---------- 9. 响应式 ---------- */
@media (max-width: 1024px) {
  .cs-burger { display: grid; }
  .cs-header__cta { display: none; }

  .cs-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 12px);
    display: block;
    padding: 10px;
    border-radius: 26px;
    border: 1px solid rgba(216, 166, 75, 0.55);
    background: rgba(252, 247, 238, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s linear;
  }
  .cs-header[data-open] .cs-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .cs-nav__list { flex-direction: column; align-items: stretch; gap: 4px; }
  .cs-nav__link { padding: 12px 16px; font-size: 15.5px; border-radius: 16px; }

  .cs-grid--sidebar,
  .cs-grid--3 { grid-template-columns: minmax(0, 1fr); }
  .cs-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

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

@media (max-width: 720px) {
  html { scroll-padding-top: 88px; }
  .cs-header { padding-top: 10px; }
  .cs-header__bar { padding: 8px 10px 8px 12px; }
  .cs-brand__seal { width: 36px; height: 36px; font-size: 20px; }
  .cs-brand__name { font-size: 17px; }
  .cs-brand__tag { letter-spacing: 0.18em; font-size: 10px; }

  .cs-grid--2 { grid-template-columns: minmax(0, 1fr); }

  .cs-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .cs-footer__base { flex-direction: column; align-items: flex-start; }
  .cs-footer__meta { font-size: 12.5px; }
}

/* ---------- 10. 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;
  }
  .cs-progress { display: none; }
}