/* ==========================================================================
   亚洲城入口 · 共享样式表 /assets/site.css
   坐标头部 → 主信息域 → 索引尾部：本文件只负责外壳、通用组件与基础网格
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

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

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

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

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

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

/* ---------- 变量 ---------- */
:root {
  --ink: #0A0B0D;
  --slate: #23272B;
  --bone: #F3EEE3;
  --gold: #C8A24A;
  --moss: #4F6B57;
  --clay: #A85A3C;
  --gold-light: #E9D28C;
  --vermilion: #C0392B;
  --mist: #9BA1A6;
  --cyan: #4E7E8C;

  --line: rgba(243, 238, 227, 0.12);
  --line-soft: rgba(243, 238, 227, 0.07);
  --line-gold: rgba(200, 162, 74, 0.42);

  --grid: 96px;
  --shell: 1240px;

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --sans: "HarmonyOS Sans SC", "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "Roboto Mono", ui-monospace, "SFMono-Regular", monospace;

  --ease: 180ms ease;
}

/* ---------- 基底与蓝图坐标网格 ---------- */
body {
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--bone);
  background-color: var(--ink);
  background-image:
    radial-gradient(58% 38% at 82% 0%, rgba(200, 162, 74, 0.10), transparent 62%),
    radial-gradient(46% 40% at 0% 96%, rgba(78, 126, 140, 0.09), transparent 66%),
    linear-gradient(to right, rgba(243, 238, 227, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(243, 238, 227, 0.045) 1px, transparent 1px);
  background-size: auto, auto, var(--grid) var(--grid), var(--grid) var(--grid);
}

#main-content {
  display: block;
  scroll-margin-top: 132px;
}

::selection { background: rgba(200, 162, 74, 0.32); color: var(--bone); }

/* ---------- 排版原子 ---------- */
.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
}

.display {
  font-family: var(--serif);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
}

.rule {
  height: 1px;
  border: 0;
  margin: 2rem 0;
  background: var(--line-soft);
}

/* ---------- 布局 ---------- */
.container {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.5rem;
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 200;
  padding: 0.6rem 1.1rem;
  border-radius: 0 0 10px 10px;
  background: var(--gold-light);
  color: var(--ink);
  font-weight: 600;
  font-size: 14px;
  transition: top var(--ease);
}

.skip-link:focus { top: 0; }

/* ---------- 坐标头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  padding: 0.4rem 0 0.7rem;
  background: linear-gradient(180deg, rgba(10, 11, 13, 0.97) 0%, rgba(10, 11, 13, 0.86) 62%, rgba(10, 11, 13, 0) 100%);
  backdrop-filter: blur(8px);
  transition: padding var(--ease);
}

.site-header[data-shrunk] { padding-top: 0.1rem; }

.site-header[data-shrunk] .pill-nav { transform: translateY(-2px); }

.header-rail {
  border-bottom: 1px solid var(--line-soft);
  transition: opacity var(--ease);
}

.site-header[data-shrunk] .header-rail { opacity: 0.55; }

.header-rail__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.3rem 0 0.42rem;
}

.header-status {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mist);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex: none;
}

.header-tools__status {
  font-size: 11.5px;
  color: var(--gold-light);
}

.header-tools__status:empty { display: none; }

.locale-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bone);
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.locale-toggle__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--moss);
  transition: background-color var(--ease);
}

.locale-toggle:hover {
  color: var(--gold-light);
  border-color: var(--line-gold);
}

.locale-toggle[aria-pressed="true"] {
  color: var(--gold-light);
  border-color: var(--line-gold);
  background: rgba(200, 162, 74, 0.10);
}

.locale-toggle[aria-pressed="true"] .locale-toggle__dot { background: var(--gold); }

/* ---------- 悬浮胶囊导航 ---------- */
.pill-nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
  padding: 0.45rem 0.5rem 0.45rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(28, 32, 36, 0.82);
  backdrop-filter: blur(14px);
  box-shadow: 0 22px 48px -34px rgba(0, 0, 0, 0.95);
  transition: transform var(--ease), border-color var(--ease);
}

.pill-nav:focus-within { border-color: var(--line-gold); }

.brand {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding-right: 0.9rem;
  border-right: 1px solid var(--line-soft);
  flex: none;
}

.brand__mark {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--bone);
}

.brand__line {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

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

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.site-nav__link {
  display: inline-block;
  padding: 0.42rem 0.72rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--bone);
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.site-nav__link:hover {
  color: var(--gold-light);
  border-color: var(--line-gold);
}

.site-nav__link[aria-current="page"] {
  color: var(--gold);
  border-color: var(--line-gold);
  background: rgba(200, 162, 74, 0.10);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1.05rem;
  border-radius: 999px;
  background: var(--vermilion);
  color: var(--bone);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: background-color var(--ease), color var(--ease);
}

.nav-cta:hover { background: #a83124; color: #ffffff; }

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--bone);
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: background-color var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 90;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light) 55%, var(--vermilion));
  pointer-events: none;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 6rem;
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(35, 39, 43, 0.62), rgba(10, 11, 13, 0) 46%), var(--ink);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 4fr) 8fr;
  gap: 2.5rem;
}

.footer-brand__mark {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 26px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--bone);
}

.footer-brand__line {
  margin-top: 0.35rem;
  font-size: 14px;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.footer-brand__meta {
  margin-top: 0.9rem;
  font-size: 12px;
  color: var(--mist);
}

.footer-brand__cta { margin-top: 1.3rem; }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.footer-col__title {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--bone);
}

.footer-col__idx {
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.footer-col__list { margin-top: 0.85rem; }

.footer-col__list li + li { margin-top: 0.45rem; }

.footer-col__list a {
  display: inline-block;
  font-size: 14.5px;
  color: rgba(243, 238, 227, 0.82);
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

.footer-contact {
  margin-top: 2.6rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2.4rem;
  align-items: baseline;
}

.footer-contact__row {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 14px;
}

.footer-contact__key {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.footer-contact__note {
  flex-basis: 100%;
  font-size: 13px;
  color: var(--mist);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.6rem;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--mist);
}

.footer-legal { color: var(--gold); font-size: 12px; }
.footer-region { max-width: 58ch; }
.footer-copy { font-size: 12px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.68rem 1.25rem;
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--bone);
  background: transparent;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.btn:hover {
  color: var(--gold-light);
  border-color: var(--gold-light);
  background: rgba(200, 162, 74, 0.08);
}

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

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

.btn--crimson {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--bone);
}

.btn--crimson:hover {
  background: #a83124;
  border-color: #a83124;
  color: #ffffff;
}

.btn--ghost {
  border-color: var(--line);
  color: rgba(243, 238, 227, 0.86);
}

.btn--ghost:hover {
  color: var(--gold-light);
  border-color: var(--line-gold);
  background: rgba(200, 162, 74, 0.06);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.62rem;
  border: 1px solid rgba(79, 107, 87, 0.62);
  border-radius: 999px;
  background: rgba(79, 107, 87, 0.18);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--bone);
  white-space: nowrap;
}

.tag--gold {
  border-color: rgba(200, 162, 74, 0.55);
  background: rgba(200, 162, 74, 0.14);
  color: var(--gold-light);
}

.tag--clay {
  border-color: rgba(168, 90, 60, 0.62);
  background: rgba(168, 90, 60, 0.18);
}

.tag--moss {
  border-color: rgba(79, 107, 87, 0.62);
  background: rgba(79, 107, 87, 0.18);
}

/* ---------- 面板 ---------- */
.panel {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(35, 39, 43, 0.62), rgba(35, 39, 43, 0.24));
}

.panel--gold {
  border-color: var(--line-gold);
  background: linear-gradient(180deg, rgba(200, 162, 74, 0.10), rgba(35, 39, 43, 0.28));
}

/* ---------- 坐标头部（页面级） ---------- */
.page-head {
  padding: 2.6rem 0 1.6rem;
  border-bottom: 1px solid var(--line);
}

.page-head__idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-head__title {
  margin-top: 0.6rem;
  font-family: var(--serif);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-size: clamp(28px, 4vw, 42px);
  color: var(--bone);
}

.page-head__meta {
  margin-top: 0.8rem;
  max-width: 68ch;
  font-size: 15px;
  color: var(--mist);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.breadcrumbs a {
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

.breadcrumbs__sep { color: rgba(243, 238, 227, 0.28); }

/* ---------- 正文 ---------- */
.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: rgba(243, 238, 227, 0.88);
}

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

.prose h2 {
  margin: 2.2rem 0 0.7rem;
  font-family: var(--serif);
  font-weight: 900;
  font-size: 24px;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--bone);
}

.prose h3 {
  margin: 1.6rem 0 0.5rem;
  font-size: 17px;
  font-weight: 600;
  color: var(--bone);
}

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

.prose strong { color: var(--bone); }

.prose ul,
.prose ol {
  margin: 0.9rem 0 0 1.3rem;
  list-style: disc;
}

.prose ol { list-style: decimal; }

.prose li + li { margin-top: 0.4rem; }

.prose li::marker { color: var(--gold); }

/* ---------- 等宽数字表格 ---------- */
.table-mono {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.table-mono th,
.table-mono td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: top;
}

.table-mono th {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.07em;
  color: var(--mist);
}

.table-mono td strong { color: var(--gold-light); font-size: 1.2em; }

/* ---------- 图像容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 14px;
  background:
    linear-gradient(135deg, #14171a 0%, #0d0f11 58%, #191d20 100%);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06);
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__glow {
  position: absolute;
  inset: auto 0 0 0;
  height: 48%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 11, 13, 0), rgba(10, 11, 13, 0.86));
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.9rem 1rem;
  font-size: 13px;
  line-height: 1.5;
  color: var(--bone);
  background: linear-gradient(180deg, rgba(10, 11, 13, 0), rgba(10, 11, 13, 0.92));
}

.media-frame--blueprint::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(200, 162, 74, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(200, 162, 74, 0.16) 1px, transparent 1px);
  background-size: 48px 48px;
  mix-blend-mode: screen;
}

/* ---------- 入场显现与轨道绘制协议 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

[data-rail] .rail-line,
[data-rail] path {
  stroke-dasharray: var(--rail-len, 1200);
  stroke-dashoffset: var(--rail-len, 1200);
  transition: stroke-dashoffset 600ms ease;
}

[data-rail].is-visible .rail-line,
[data-rail].is-visible path { stroke-dashoffset: 0; }

/* ---------- 焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1080px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }

  .brand { flex: 1; order: 1; }
  .nav-cta { order: 2; }
  .nav-toggle { order: 3; }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    margin-left: 0;
    padding: 0.6rem;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: rgba(14, 16, 18, 0.98);
    backdrop-filter: blur(12px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .site-nav__link {
    display: block;
    padding: 0.7rem 0.85rem;
    border-radius: 12px;
    font-size: 15.5px;
  }

  .span-3,
  .span-4,
  .span-5,
  .span-6,
  .span-7,
  .span-8,
  .span-9 {
    grid-column: span 12;
  }

  .grid-12 { gap: 1.15rem; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 720px) {
  .header-status { display: none; }

  .header-rail__inner { justify-content: flex-end; }

  .brand__line { display: none; }

  .brand__mark { font-size: 17px; }

  .pill-nav { padding: 0.4rem 0.45rem 0.4rem 0.85rem; }

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

  .footer-contact { gap: 0.55rem 1.5rem; }

  .footer-base { justify-content: flex-start; }

  .page-head { padding: 1.9rem 0 1.2rem; }

  .media-frame--wide { aspect-ratio: 16 / 9; }
}

@media (max-width: 460px) {
  .nav-cta { padding: 0.45rem 0.8rem; font-size: 13px; }

  .nav-toggle__text { display: none; }

  .footer-nav { grid-template-columns: 1fr; }
}

/* ---------- 降低动效 ---------- */
@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;
  }

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

  [data-rail] .rail-line,
  [data-rail] path {
    stroke-dashoffset: 0;
  }

  .site-header[data-shrunk] .pill-nav { transform: none; }
}