/* =========================================================
   皇冠体彩官网 · /assets/site.css
   共享外壳：reset / 变量 / 排版 / 头部 / 页脚 / 通用组件
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 136px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, figcaption, blockquote,
dl, dd, ol, ul, fieldset { margin: 0; }

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

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

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

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

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

table { border-collapse: collapse; width: 100%; }

[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  /* 色彩 */
  --ink-green: #0E3B2E;
  --ink-green-deep: #092A20;
  --gold: #D4AF37;
  --gold-pale: #E8D9A8;
  --gold-dark: #7A6A3F;
  --ivory: #F6F1E7;
  --ivory-hi: #FBF8F1;
  --cinnabar: #C0392B;
  --slate-teal: #5B7C7A;
  --ink: #1C1A17;
  --link: #2F6B57;
  --mist: #B9C7C3;

  /* 结构 */
  --rail-w: 96px;
  --shadow-hard: 8px 8px 0 var(--ink-green);
  --shadow-soft: 6px 6px 0 rgba(14, 59, 46, .92);
  --border-ink: 2px solid var(--ink-green);
  --radius: 3px;
  --maxw: 1220px;

  /* 字体 */
  --font-display: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--ivory);
  background-image:
    linear-gradient(180deg, rgba(122, 106, 63, .05) 0 1px, transparent 1px 100%);
  background-size: 100% 96px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1.3;
  color: var(--ink-green);
}

h1 { font-size: clamp(32px, 5.2vw, 56px); line-height: 1.18; }
h2 { font-size: clamp(24px, 3.2vw, 34px); }
h3 { font-size: clamp(19px, 2.2vw, 26px); }
h4 { font-size: 20px; }

p { line-height: 1.85; }

strong { font-weight: 700; color: var(--ink-green); }

.mono {
  font-family: var(--font-mono);
  font-size: .94em;
  letter-spacing: .02em;
  padding-bottom: 1px;
  border-bottom: 2px solid var(--gold);
}

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

/* ---------- 4. 通用布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 20px;
}

.section {
  padding-block: clamp(44px, 6.5vw, 84px);
}

.section + .section {
  border-top: 1px solid rgba(122, 106, 63, .26);
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -120px;
  left: 12px;
  z-index: 400;
  padding: 10px 20px;
  background: var(--ink-green);
  color: var(--ivory);
  border: 2px solid var(--gold);
  border-radius: var(--radius);
  font-size: 14px;
  letter-spacing: .1em;
  transition: top .18s ease-out;
}

.skip-link:focus {
  top: 12px;
  outline: 3px solid var(--cinnabar);
  outline-offset: 2px;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border: var(--border-ink);
  border-radius: var(--radius);
  background: var(--ivory-hi);
  color: var(--ink-green);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.4;
  box-shadow: 4px 4px 0 rgba(14, 59, 46, .9);
  transition: transform .12s ease, box-shadow .12s ease, background-color .16s ease, color .16s ease;
}

.btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(14, 59, 46, .9);
}

.btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 rgba(14, 59, 46, .9);
}

.btn--solid {
  background: var(--ink-green);
  color: var(--ivory);
}

.btn--solid:hover { color: var(--gold-pale); }

.btn--gold {
  background: var(--gold);
  color: var(--ink-green);
  border-color: var(--ink-green);
}

.btn--outline {
  background: transparent;
  color: var(--gold-dark);
  border-color: var(--gold-dark);
  box-shadow: 4px 4px 0 rgba(122, 106, 63, .55);
}

.btn--outline:hover {
  color: var(--ink-green);
  border-color: var(--ink-green);
  box-shadow: 2px 2px 0 rgba(14, 59, 46, .6);
}

.btn--sm {
  padding: 9px 18px;
  font-size: 13px;
  letter-spacing: .1em;
}

/* ---------- 7. 头部：投影轨 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
}

.rail { display: none; }

/* ---------- 8. 头部：上层品牌条 ---------- */
.header-top {
  background: var(--ink-green);
  color: var(--ivory);
  border-bottom: 2px solid var(--gold);
}

.header-top__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 13px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-inline-end: auto;
  min-width: 0;
}

.brand__mark {
  flex: none;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gold);
  transform: rotate(45deg);
  position: relative;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--gold);
}

.brand__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ivory);
  white-space: nowrap;
}

.brand__sub {
  display: none;
  font-size: 12px;
  letter-spacing: .18em;
  color: rgba(232, 217, 168, .74);
  padding-inline-start: 12px;
  border-inline-start: 1px solid rgba(232, 217, 168, .34);
  white-space: nowrap;
}

.header-status {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--gold-pale);
  white-space: nowrap;
}

.header-status::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--gold);
  transform: rotate(45deg);
}

.collect-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 8px 16px;
  border: 2px solid var(--gold);
  border-radius: 999px;
  color: var(--gold);
  font-size: 12.5px;
  letter-spacing: .16em;
  line-height: 1.4;
  transition: background-color .18s ease, color .18s ease, transform .14s ease;
}

.collect-pill:hover {
  background: var(--gold);
  color: var(--ink-green);
  transform: translateY(-1px);
}

.collect-pill__icon {
  width: 8px;
  height: 8px;
  flex: none;
  background: currentColor;
  transform: rotate(45deg);
}

.collect-pill__text {
  white-space: nowrap;
}

/* 滚动越屏后收拢胶囊 */
.site-header[data-compact] .collect-pill__text { display: none; }
.site-header[data-compact] .collect-pill { padding-inline: 13px; }
.site-header[data-compact] .header-top__inner { padding-block: 9px; }

/* ---------- 9. 头部：下层栏目条 ---------- */
.header-bar {
  background: var(--ivory-hi);
  border-bottom: 2px solid var(--ink-green);
}

.header-bar__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 56px;
  padding-inline: 2px;
  color: var(--ink-green);
  font-size: 14px;
  letter-spacing: .16em;
}

.nav-toggle__bars {
  display: grid;
  gap: 5px;
  width: 22px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  transition: transform .2s ease, opacity .16s ease;
}

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

.site-nav { display: none; }

.site-nav[data-open] { display: block; }

.site-nav__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--mist);
  color: var(--ink-green);
  font-size: 15px;
  letter-spacing: .08em;
}

.site-nav__list li:last-child a { border-bottom: 0; }

.site-nav__list a::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-dark);
}

.site-nav__list a[aria-current="page"] {
  color: var(--cinnabar);
  font-weight: 700;
}

.site-nav__list a[aria-current="page"]::after {
  color: var(--cinnabar);
}

.header-bar__cta { display: none; }

/* 移动端抽屉 */
.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--ivory-hi);
  border-bottom: 2px solid var(--ink-green);
  box-shadow: 0 8px 0 rgba(14, 59, 46, .16);
  padding: 4px 20px 20px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

/* ---------- 10. 移动端底部工具条 ---------- */
.tool-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 95;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--ink-green);
  border-top: 2px solid var(--gold);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.tool-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 4px 12px;
  color: rgba(246, 241, 231, .82);
  font-size: 12px;
  letter-spacing: .2em;
  border-inline-start: 1px solid rgba(232, 217, 168, .18);
}

.tool-bar a:first-child { border-inline-start: 0; }

.tool-bar a::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

.tool-bar a:active {
  background: rgba(212, 175, 55, .16);
  color: var(--gold);
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--ink-green);
  color: var(--ivory);
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: repeating-linear-gradient(
    90deg,
    var(--gold) 0 22px,
    transparent 22px 44px
  );
  opacity: .85;
}

.footer-main {
  display: grid;
  gap: 40px;
  padding-block: clamp(44px, 6vw, 68px) 40px;
}

.footer-brand__name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ivory);
}

.footer-brand__name::before {
  content: "";
  flex: none;
  width: 12px;
  height: 12px;
  background: var(--gold);
  transform: rotate(45deg);
}

.footer-brand__note {
  margin-top: 14px;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.9;
  color: rgba(246, 241, 231, .72);
}

.footer-brand__addr {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(232, 217, 168, .58);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 18px;
}

.footer-col__title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid rgba(212, 175, 55, .34);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--gold);
}

.footer-col__title span {
  color: rgba(232, 217, 168, .55);
  font-size: 10.5px;
}

.footer-col li + li { margin-top: 9px; }

.footer-col a {
  font-size: 14px;
  letter-spacing: .04em;
  color: rgba(246, 241, 231, .8);
  border-bottom: 1px solid transparent;
  transition: color .16s ease, border-color .16s ease;
}

.footer-col a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  padding-block: 20px 44px;
  border-top: 1px solid rgba(232, 217, 168, .22);
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(246, 241, 231, .62);
}

.footer-meta .mono {
  border-bottom-color: rgba(212, 175, 55, .55);
  color: rgba(246, 241, 231, .82);
}

.footer-legal,
.footer-copy { white-space: normal; }

/* ---------- 12. 面包屑 ---------- */
.crumbs {
  padding-block: 18px 0;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gold-dark);
}

.crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.crumbs li + li::before {
  content: "›";
  color: var(--mist);
}

.crumbs a {
  color: var(--link);
  border-bottom: 1px solid var(--gold-pale);
}

.crumbs a:hover { border-bottom-color: var(--gold); }

.crumbs [aria-current="page"] { color: var(--ink-green); border-bottom: 0; }

/* ---------- 13. 正文排版 ---------- */
.prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink);
}

.prose > * + * { margin-top: 1.2em; }

.prose h2 {
  margin-top: 2em;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(122, 106, 63, .28);
}

.prose h3 { margin-top: 1.7em; }

.prose a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.prose a:hover {
  color: var(--ink-green);
  text-decoration-color: var(--cinnabar);
}

.prose ul,
.prose ol {
  padding-inline-start: 1.3em;
}

.prose ul li { list-style: none; position: relative; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1em;
  top: .78em;
  width: 7px;
  height: 7px;
  background: var(--gold);
  transform: rotate(45deg);
}

.prose ol { list-style: decimal; }
.prose ol li { list-style: decimal; }

.prose blockquote {
  margin-inline: 0;
  padding: 14px 20px;
  border-inline-start: 3px solid var(--gold);
  background: var(--ivory-hi);
  color: var(--ink-green);
}

/* ---------- 14. 版块节点标记 ---------- */
.edge-mark {
  position: relative;
  padding-inline-start: 34px;
}

.edge-mark::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block: 2px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(212, 175, 55, .28));
}

.edge-mark::after {
  content: attr(data-num);
  position: absolute;
  inset-inline-start: -11px;
  top: 9px;
  width: 24px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  color: var(--gold);
}

.edge-mark > .edge-mark__node {
  position: absolute;
  inset-inline-start: -12px;
  top: 4px;
  width: 24px;
  height: 24px;
  background: var(--ink-green);
  border: 2px solid var(--gold);
  transform: rotate(45deg);
}

/* ---------- 15. 纸卡 ---------- */
.card {
  background: var(--ivory-hi);
  border: var(--border-ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: clamp(20px, 3vw, 30px);
  transition: transform .12s ease, box-shadow .12s ease;
}

.card:hover {
  transform: translate(2px, 2px);
  box-shadow: var(--shadow-soft);
}

/* ---------- 16. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 2px;
  background: var(--gold-pale);
  color: var(--ink-green);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 1.7;
}

.tag--gold { background: var(--gold); color: var(--ink-green); }
.tag--red { background: rgba(192, 57, 43, .12); color: var(--cinnabar); box-shadow: inset 0 0 0 1px var(--cinnabar); }
.tag--teal { background: var(--slate-teal); color: var(--ivory-hi); }

/* ---------- 17. 提示条 ---------- */
.note-strip {
  padding: 16px 20px;
  background: var(--gold-pale);
  border-inline-start: 4px solid var(--gold-dark);
  border-radius: 2px;
  color: var(--ink-green);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 18. 响应式图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: var(--border-ink);
  border-radius: var(--radius);
  background: var(--ivory-hi);
  box-shadow: var(--shadow-hard);
}

.media-frame > img,
.media-frame > svg,
.media-frame > picture,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--band { aspect-ratio: 5 / 2; }
.media-frame--auto { aspect-ratio: auto; }

.media-figure { display: block; }

.media-figure .figure-cap {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--gold-dark);
}

/* ---------- 19. 滚动显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .24s ease-out, transform .24s ease-out;
}

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

/* ---------- 20. 断点 ---------- */
@media (min-width: 720px) {
  .wrap { padding-inline: 32px; }
  .brand__sub { display: inline-block; }
  .header-status { display: inline-flex; }
  .footer-main { grid-template-columns: 1fr 1.35fr; gap: 48px; }
  .footer-cols { gap: 32px 24px; }
}

@media (max-width: 420px) {
  .collect-pill { padding-inline: 12px; }
  .collect-pill__text { display: none; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }

  .rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    padding: 26px 0 22px;
    background: var(--ink-green);
    border-right: 2px solid var(--gold);
    z-index: 100;
  }

  .rail__mark {
    writing-mode: vertical-rl;
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: .34em;
    color: var(--gold);
  }

  .rail__label {
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: .3em;
    color: rgba(246, 241, 231, .52);
  }

  .rail__index {
    display: grid;
    gap: 11px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .1em;
    text-align: center;
    color: rgba(246, 241, 231, .34);
  }

  .rail__progress {
    position: relative;
    width: 2px;
    height: 108px;
    background: rgba(232, 217, 168, .24);
  }

  .rail__progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: var(--gold);
  }

  .tool-bar { display: none; }
  body { padding-bottom: 0; }

  .header-top__inner { padding-block: 15px; gap: 22px; }
  .brand__name { font-size: 20px; }
  .header-top__inner { padding-inline: 40px; }
  .header-bar__inner { padding-inline: 40px; min-height: 58px; }
  .wrap { padding-inline: 48px; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    display: block;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    max-height: none;
    overflow: visible;
  }

  .site-nav__list {
    display: flex;
    align-items: stretch;
    gap: 2px;
  }

  .site-nav__list a {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 58px;
    padding: 0 15px;
    border-bottom: 0;
    font-size: 15px;
    letter-spacing: .06em;
    color: var(--ink-green);
    transition: color .16s ease;
  }

  .site-nav__list a::after {
    content: "";
    position: absolute;
    left: 15px;
    right: 15px;
    bottom: 11px;
    height: 3px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .22s ease-out;
  }

  .site-nav__list a:hover { color: var(--ink-green-deep); }
  .site-nav__list a:hover::after { transform: scaleX(1); }

  .site-nav__list a[aria-current="page"] {
    color: var(--ink-green);
    font-weight: 700;
  }

  .site-nav__list a[aria-current="page"]::after {
    transform: scaleX(1);
    background: var(--gold);
  }

  .header-bar__cta {
    display: inline-flex;
    margin-inline-start: auto;
  }

  .footer-main {
    grid-template-columns: 1fr 1.4fr;
    gap: 64px;
    padding-block: 70px 48px;
  }
}

@media (min-width: 1280px) {
  .site-nav__list a { padding-inline: 18px; font-size: 15.5px; }
  .site-nav__list a::after { left: 18px; right: 18px; }
}

@media (min-width: 1024px) and (max-height: 720px) {
  .rail__index { display: none; }
  .rail__progress { height: 80px; }
}

/* ---------- 21. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }

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

  .rail__progress-fill { transition: none !important; }
}