/* ============================================================
   8868皇冠看台 · 共享样式 /assets/site.css
   堆叠画板 · 看台年鉴 · 双版本对照
   ============================================================ */

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

.site-header :focus-visible,
.site-footer :focus-visible {
  outline: 2px solid var(--gold-bright);
  outline-offset: 3px;
}

.skip-link:focus-visible {
  outline: 2px solid var(--green-900);
  outline-offset: 3px;
}

/* ---------- 2. 变量 ---------- */
:root {
  --green-900: #0A211A;
  --green-800: #0F2E24;
  --green-700: #1E4A3A;
  --gold: #C9A227;
  --gold-bright: #E3C766;
  --sand: #F4E9C4;
  --rust: #C75B39;
  --rust-deep: #A8462A;
  --slate: #5B6B7A;
  --mist: #E6EAEE;
  --paper: #F7F4EC;
  --ink: #14181A;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, "Times New Roman", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, "Courier New", monospace;

  --shadow-hard: 8px 8px 0 var(--green-900);
  --shadow-hard-sm: 4px 4px 0 var(--green-900);

  --shell-max: 1280px;
  --shell-pad: 24px;
  --ease-out: cubic-bezier(0.2, 0.9, 0.3, 1);
}

/* ---------- 3. 中文排版基础 ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--ink);
}

h1 { font-size: clamp(38px, 5.4vw, 72px); }
h2 { font-size: clamp(28px, 3.4vw, 44px); }
h3 { font-size: clamp(20px, 2.1vw, 28px); }
h4 { font-size: 18px; letter-spacing: 0; }

strong { font-weight: 700; }

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

.prose {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
}
.prose p + p { margin-top: 1.1em; }

.eyebrow {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.vertical-note {
  margin: 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--gold);
}

.mono-tag {
  display: inline-block;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--slate);
  background: var(--mist);
  border: 1px solid rgba(91, 107, 122, 0.35);
}

.mono-tag--gold {
  color: #7A5F10;
  background: var(--sand);
  border-color: rgba(201, 162, 39, 0.55);
}

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--green-900);
  box-shadow: var(--shadow-hard-sm);
  cursor: pointer;
  transition: transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out),
              background-color 160ms ease, color 160ms ease;
}
.btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--green-900);
}
.btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--green-900);
}
.btn--primary {
  background: var(--rust);
  color: var(--ink);
}
.btn--primary:hover { background: var(--rust-deep); }
.btn--gold {
  background: var(--gold);
  color: var(--green-900);
  border-color: var(--green-900);
}
.btn--gold:hover { background: var(--gold-bright); }
.btn--ghost {
  background: transparent;
  color: var(--gold-bright);
  border-color: var(--gold);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.45);
}
.btn--ghost:hover {
  background: rgba(201, 162, 39, 0.12);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.45);
}

/* ---------- 5. 画板与图片容器 ---------- */
.panel {
  position: relative;
  padding: clamp(24px, 4vw, 48px);
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow-hard);
}
.panel--dark {
  background: var(--green-800);
  color: var(--sand);
  border-color: var(--gold);
  box-shadow: 8px 8px 0 var(--green-900);
}
.panel--dark h1,
.panel--dark h2,
.panel--dark h3,
.panel--dark h4 { color: var(--gold-bright); }
.panel--dark .prose { color: rgba(244, 233, 196, 0.86); }
.panel--paper {
  background: var(--sand);
  border-color: var(--ink);
}

.media {
  position: relative;
  display: block;
  overflow: hidden;
  margin: 0;
  background: var(--green-700);
  border: 3px solid var(--green-900);
  box-shadow: var(--shadow-hard-sm);
}
.media > img,
.media > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.04);
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--3x2  { aspect-ratio: 3 / 2; }
.media--4x3  { aspect-ratio: 4 / 3; }
.media--1x1  { aspect-ratio: 1 / 1; }
.media--tall { aspect-ratio: 3 / 4; }

.media__caption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 3px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 6. 面包屑 ---------- */
.breadcrumb {
  padding-top: 22px;
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 160ms ease, border-color 160ms ease;
}
.breadcrumb__link:hover {
  color: var(--ink);
  border-bottom-color: var(--gold);
}
.breadcrumb__sep {
  font-family: var(--font-mono);
  color: var(--gold);
}
.breadcrumb__current {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- 7. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: -90px;
  left: 16px;
  z-index: 220;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--green-900);
  background: var(--gold);
  border: 3px solid var(--green-900);
  transition: top 180ms var(--ease-out);
}
.skip-link:focus {
  top: 14px;
  outline: 2px solid var(--green-900);
  outline-offset: 3px;
}

/* ---------- 8. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 50;
}

.header-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

/* 上层：品牌说明条 */
.header-upper {
  background: var(--green-800);
  border-bottom: 3px solid var(--gold);
  color: var(--sand);
}

.header-upper__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  padding-block: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
  flex: 0 0 auto;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: var(--gold);
  background: rgba(201, 162, 39, 0.12);
  border: 2px solid var(--gold);
  flex: 0 0 auto;
  transition: background-color 160ms ease, color 160ms ease;
}
.brand:hover .brand__mark {
  background: var(--gold);
  color: var(--green-900);
}
.brand__mark svg { width: 20px; height: 20px; }

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  line-height: 1.15;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--gold-bright);
  text-shadow: 0 1px 0 rgba(10, 33, 26, 0.85);
}
.brand__tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(244, 233, 196, 0.7);
}

.header-upper__note {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(244, 233, 196, 0.62);
  padding-left: 20px;
  border-left: 1px solid rgba(201, 162, 39, 0.4);
}

.quick-paths {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}
.quick-paths__item { display: block; }
.quick-paths__link {
  display: inline-block;
  padding: 7px 12px;
  font-size: 13px;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--sand);
  border: 1px solid rgba(201, 162, 39, 0.5);
  background: rgba(10, 33, 26, 0.35);
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}
.quick-paths__idx {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--gold);
  transition: color 160ms ease;
}
.quick-paths__link:hover,
.quick-paths__link:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--green-900);
}
.quick-paths__link:hover .quick-paths__idx,
.quick-paths__link:focus-visible .quick-paths__idx {
  color: var(--green-900);
}

/* 下层：主栏目横栏 */
.header-lower {
  background: var(--green-900);
  color: var(--sand);
  box-shadow: 0 6px 0 0 rgba(10, 33, 26, 0.28);
}

.header-lower__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 58px;
  padding-block: 6px;
}

.site-nav { margin-right: auto; }

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

.site-nav__item { display: block; }

.site-nav__link {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: rgba(244, 233, 196, 0.86);
  border-bottom: 3px solid transparent;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.site-nav__link:hover {
  color: var(--gold-bright);
  background: rgba(201, 162, 39, 0.14);
  border-bottom-color: var(--gold);
}
.site-nav__link[aria-current="page"] {
  color: var(--green-900);
  background: var(--gold);
  border-bottom-color: var(--gold-bright);
  font-weight: 700;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
  color: var(--ink);
  background: var(--rust);
  border: 2px solid var(--gold);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
  flex: 0 0 auto;
  transition: background-color 160ms ease, transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
}
.header-cta:hover {
  background: var(--rust-deep);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold-bright);
  background: transparent;
  border: 2px solid var(--gold);
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
}
.nav-toggle:hover {
  background: rgba(201, 162, 39, 0.16);
}
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease-out), opacity 200ms ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}
.nav-toggle__label { display: inline-block; }

/* ---------- 9. 页脚 ---------- */
.site-footer {
  margin-top: clamp(56px, 8vw, 96px);
  background: var(--green-800);
  color: var(--sand);
  border-top: 3px solid var(--gold);
}

.footer-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(44px, 6vw, 72px) var(--shell-pad) 0;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.35);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 2.6vw, 32px);
  letter-spacing: -0.01em;
  color: var(--gold-bright);
  text-shadow: 0 1px 0 rgba(10, 33, 26, 0.9);
}
.footer-brand__note {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 233, 196, 0.76);
}
.footer-brand__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 22px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1;
  text-decoration: none;
  color: var(--green-900);
  background: var(--gold);
  border: 2px solid var(--gold-bright);
  box-shadow: 4px 4px 0 #06140F;
  transition: transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out), background-color 160ms ease;
}
.footer-brand__cta:hover {
  background: var(--gold-bright);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 #06140F;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  align-content: start;
}

.footer-nav__col { min-width: 0; }

.footer-nav__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--gold);
  border-bottom: 1px solid rgba(201, 162, 39, 0.3);
}

.footer-nav__list {
  display: grid;
  gap: 10px;
}

.footer-nav__link {
  display: inline-block;
  font-size: 15px;
  text-decoration: none;
  color: rgba(244, 233, 196, 0.86);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 160ms ease, border-color 160ms ease;
}
.footer-nav__link:hover {
  color: var(--gold-bright);
  border-bottom-color: var(--gold);
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px 32px;
  padding-block: 26px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.25);
}
.footer-contact__item { min-width: 0; }
.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 6px;
}
.footer-contact__value {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 233, 196, 0.88);
  word-break: break-word;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  padding-block: 22px 30px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 233, 196, 0.58);
}
.footer-legal__copy { margin: 0; }
.footer-legal__note { margin: 0; }
.footer-legal__icp {
  margin: 0;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(244, 233, 196, 0.82);
  border: 1px solid rgba(201, 162, 39, 0.35);
}

/* ---------- 10. 滚动进度线 ---------- */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 200;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-bright) 55%, var(--rust) 100%);
}

/* ---------- 11. 显现动效 ---------- */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 320ms var(--ease-out), transform 320ms var(--ease-out);
}
html.js-reveal [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 平板 ---------- */
@media (max-width: 1080px) {
  .header-upper__note { display: none; }
  .quick-paths { margin-left: auto; }
  .header-lower__inner { gap: 12px; }
  .site-nav__link { padding: 10px 11px; font-size: 14px; }
}

/* ---------- 13. 移动 ---------- */
@media (max-width: 900px) {
  :root { --shell-pad: 18px; }

  .header-upper__inner {
    gap: 12px;
    padding-block: 10px;
  }
  .quick-paths {
    width: 100%;
    margin-left: 0;
    gap: 6px;
  }
  .quick-paths__link {
    padding: 7px 10px;
    font-size: 12px;
  }

  .header-lower__inner {
    flex-wrap: wrap;
    padding-block: 10px;
    gap: 10px;
  }
  .nav-toggle {
    display: inline-flex;
    order: 1;
  }
  .header-cta {
    order: 2;
    margin-left: auto;
    padding: 10px 14px;
    font-size: 13px;
  }
  .site-nav {
    order: 3;
    flex: 1 0 100%;
    display: none;
    margin-right: 0;
  }
  .site-nav[data-open="true"] { display: block; }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 8px;
  }
  .site-nav__link {
    padding: 13px 10px;
    font-size: 15px;
    border-bottom: 1px solid rgba(201, 162, 39, 0.2);
    border-left: 3px solid transparent;
  }
  .site-nav__link[aria-current="page"] {
    border-left-color: var(--gold-bright);
  }

  .footer-top {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
  .footer-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 620px) {
  body { font-size: 16px; }

  .brand__name { font-size: 18px; }
  .brand__tagline { font-size: 10px; letter-spacing: 0.06em; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .panel { box-shadow: 4px 4px 0 var(--green-900); }
  .panel--dark { box-shadow: 5px 5px 0 var(--green-900); }
}

/* ---------- 14. 减少动效 ---------- */
@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;
  }

  .btn:hover,
  .header-cta:hover,
  .footer-brand__cta:hover {
    transform: none;
  }

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