/* =========================================================
   澳门沙金官方网站中国站 · /assets/site.css
   共享外壳：reset · 变量 · 中文排版 · 框架头部 · 档案页脚 · 基础组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption, 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; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
summary { cursor: pointer; }
::selection { background: #C9A227; color: #0A1A2A; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #0A1A2A;
  --ink-2: #12293D;
  --ink-3: #183149;
  --line: #26445E;
  --gold: #C9A227;
  --gold-hi: #E7C86A;
  --gold-mist: #F0DFA8;
  --sand: #F4EEE2;
  --copper: #3F7F6C;
  --clay: #B06A44;
  --stone: #8C9AA6;
  --text: #DCE4EC;
  --frame-h: 56px;
  --rail-w: 48px;
  --gutter: 20px;
  --maxw: 1300px;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Noto Sans SC", system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(.22, .61, .36, 1);
}
@media (min-width: 900px) {
  :root { --frame-h: 68px; --gutter: 32px; }
}

/* ---------- 3. 中文排版与页面底 ---------- */
body {
  min-height: 100vh;
  padding-top: var(--frame-h);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(90deg, rgba(38, 68, 94, .38) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(180deg, rgba(38, 68, 94, .18) 0 1px, transparent 1px 96px);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: .005em;
}
@media (min-width: 1280px) {
  body { padding-left: var(--rail-w); }
}
h1, h2, h3, h4 { color: var(--sand); font-weight: 800; line-height: 1.12; letter-spacing: -.02em; }
.display-1 { font-size: clamp(34px, 6.2vw, 72px); font-weight: 900; letter-spacing: -.03em; }
.display-2 { font-size: clamp(26px, 3.6vw, 44px); font-weight: 800; }
.h3 { font-size: clamp(19px, 2vw, 24px); font-weight: 700; }
.lede { max-width: 62ch; font-size: clamp(16px, 1.4vw, 18px); color: #C6D2DE; }
.prose { max-width: 70ch; color: #C9D5E1; font-size: 16px; line-height: 1.85; }
.prose p + p { margin-top: 16px; }
.prose strong { color: var(--sand); }
.mono { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--gold-hi);
}
.eyebrow::before { content: ""; width: 20px; height: 1px; background: var(--gold); }
.aside-note { font-size: 11px; line-height: 1.7; letter-spacing: .08em; color: var(--stone); }
.vertical { writing-mode: vertical-rl; text-orientation: mixed; letter-spacing: .16em; }
.rule-line { height: 1px; margin: 0; border: 0; background: var(--line); }
.u-visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 4. 焦点与动效基线 ---------- */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ---------- 5. 框架头部 ---------- */
.site-frame { position: fixed; inset: 0 0 auto 0; z-index: 80; }

.skip-link {
  position: absolute; left: 14px; top: -80px; z-index: 99;
  padding: 10px 18px; border-radius: 2px;
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  color: #101418; font-size: 13px; font-weight: 700;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 10px; }

.frame-bar {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  min-height: var(--frame-h);
  background: rgba(10, 26, 42, .96);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
@media (min-width: 1280px) {
  .frame-bar { margin-left: var(--rail-w); }
}

.frame-brand {
  display: flex; align-items: center; gap: 14px;
  padding: 0 16px;
  border-right: 1px solid var(--line);
}
.brand-mark { display: flex; flex-direction: column; justify-content: center; line-height: 1.1; }
.brand-cn { font-size: 18px; font-weight: 900; letter-spacing: -.02em; color: var(--sand); }
.brand-en { margin-top: 4px; font-family: var(--mono); font-size: 9px; letter-spacing: .26em; color: var(--stone); }
.brand-line { display: none; }
@media (min-width: 1180px) {
  .brand-line {
    display: block; max-width: 9em; padding-left: 14px;
    border-left: 1px solid var(--line);
    font-size: 11px; line-height: 1.5; letter-spacing: .06em; color: var(--stone);
  }
}

.frame-nav { display: flex; align-items: stretch; justify-content: flex-end; min-width: 0; }
.nav-list { display: flex; align-items: stretch; margin-left: auto; counter-reset: nav; }
.nav-list li { counter-increment: nav; }
.nav-list a {
  position: relative; display: flex; align-items: center; height: 100%;
  padding: 0 15px; font-size: 14px; color: #C8D4DF;
  transition: color .2s var(--ease);
}
.nav-list a::after {
  content: ""; position: absolute; left: 15px; right: 15px; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-hi));
  transform: scaleX(0); transform-origin: 50% 50%;
  transition: transform .24s var(--ease);
}
.nav-list a:hover { color: var(--gold-hi); }
.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--gold-hi); }

.nav-note {
  display: none; align-self: center; margin-left: 16px; padding-left: 16px;
  border-left: 1px solid var(--line);
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  color: var(--stone); white-space: nowrap;
}
@media (min-width: 1180px) { .nav-note { display: block; } }

.frame-actions {
  display: flex; align-items: center; gap: 12px;
  padding: 0 14px;
  border-left: 1px solid var(--line);
}
.link-util {
  display: none; padding: 6px 0; border-bottom: 1px solid transparent;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--stone);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.link-util:hover { color: var(--gold-hi); border-bottom-color: var(--gold); }
@media (min-width: 1180px) { .link-util { display: inline-block; } }
.frame-actions .btn { height: 34px; padding: 0 16px; font-size: 13px; }

.nav-toggle { display: flex; align-items: center; gap: 10px; height: var(--frame-h); padding: 0 8px; color: var(--gold-mist); }
.nav-toggle-bars {
  position: relative; display: block; width: 22px; height: 12px;
  border-top: 1px solid currentColor; border-bottom: 1px solid currentColor;
}
.nav-toggle-bars::after {
  content: ""; position: absolute; left: 0; right: 6px; top: 50%; height: 1px;
  background: currentColor; transition: right .2s var(--ease);
}
.site-frame[data-open] .nav-toggle-bars::after { right: 0; }
@media (min-width: 1080px) { .nav-toggle { display: none; } }

.frame-progress {
  position: absolute; left: 0; bottom: -1px; z-index: 2;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-hi), var(--gold-mist));
  transform: scaleX(0); transform-origin: 0 50%;
}

/* 移动导航面板 */
@media (max-width: 1079.98px) {
  body.is-nav-open { overflow: hidden; }
  .frame-nav {
    position: fixed; left: 0; right: 0; top: var(--frame-h);
    display: block;
    max-height: calc(100vh - var(--frame-h));
    overflow-y: auto;
    background: var(--ink-2);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    opacity: 0; visibility: hidden; transform: translateY(-10px);
    transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  }
  .site-frame[data-open] .frame-nav { opacity: 1; visibility: visible; transform: none; }
  .nav-list { display: block; padding: 8px 0; }
  .nav-list li { border-bottom: 1px solid rgba(38, 68, 94, .65); }
  .nav-list li:last-child { border-bottom: 0; }
  .nav-list a {
    height: auto; padding: 16px 24px 16px 58px;
    font-size: 17px; font-weight: 700; color: var(--sand);
  }
  .nav-list a::before {
    content: counter(nav, decimal-leading-zero);
    position: absolute; left: 24px; top: 50%; transform: translateY(-50%);
    font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--gold);
  }
  .nav-list a::after { left: 24px; right: 24px; bottom: -1px; }
  .nav-note { display: block; margin: 0; padding: 16px 24px 28px; border-left: 0; }
}

/* 左侧竖向标尺轨 */
.frame-rail { display: none; }
@media (min-width: 1280px) {
  .frame-rail {
    display: flex; position: fixed; top: 0; left: 0; bottom: 0; z-index: 79;
    width: var(--rail-w); flex-direction: column; align-items: center; gap: 16px;
    padding: 14px 0 20px;
    background: var(--ink);
    border-right: 1px solid var(--line);
  }
}
.rail-text {
  writing-mode: vertical-rl; transform: rotate(180deg);
  font-family: var(--mono); font-size: 10px; letter-spacing: .32em; color: var(--stone);
}
.rail-ticks {
  flex: 1 1 auto; width: 100%; opacity: .85;
  background-image: repeating-linear-gradient(180deg, var(--line) 0 1px, transparent 1px 16px);
}

/* ---------- 6. 档案式页脚 ---------- */
.site-foot {
  position: relative;
  margin-top: 72px;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}
.foot-scale {
  height: 24px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 24px);
  opacity: .9;
}
.foot-inner {
  display: grid; grid-template-columns: 1fr; gap: 32px;
  padding: 48px max(var(--gutter), calc((100% - var(--maxw)) / 2)) 40px;
}
@media (min-width: 640px) { .foot-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1080px) {
  .foot-inner {
    grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(110px, .8fr)) minmax(260px, 1.6fr);
    gap: 44px;
  }
}
.foot-brand-cn { font-size: 26px; font-weight: 900; letter-spacing: -.02em; color: var(--sand); }
.foot-brand-en { margin-top: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: .28em; color: var(--stone); }
.foot-brand-line { margin-top: 14px; max-width: 24ch; font-size: 13px; line-height: 1.7; color: #B9C6D2; }
.foot-brand-tag { margin-top: 16px; }

.foot-col-title {
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .18em;
  color: var(--gold-hi);
}
.foot-links { display: grid; gap: 10px; margin-top: 14px; }
.foot-links a {
  font-size: 14px; color: #C6D2DE; border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.foot-links a:hover { color: var(--gold-hi); border-bottom-color: var(--gold); }

.foot-contact {
  display: grid; gap: 14px; align-content: start;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.foot-contact-row { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 10px; align-items: baseline; }
.foot-label { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--stone); }
.foot-value { font-size: 14px; color: #DBE3EB; word-break: break-word; }
.foot-note { max-width: 46ch; font-size: 12px; line-height: 1.75; color: var(--stone); }

.foot-base {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px;
  padding: 18px max(var(--gutter), calc((100% - var(--maxw)) / 2)) 32px;
  border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--stone);
}
.foot-copy { color: var(--stone); }
.foot-legal { display: flex; flex-wrap: wrap; gap: 16px; }
.foot-legal a { border-bottom: 1px solid transparent; transition: color .2s var(--ease), border-color .2s var(--ease); }
.foot-legal a:hover { color: var(--gold-hi); border-bottom-color: var(--gold); }
.foot-icp { margin-left: auto; color: #A7B4C0; }

/* ---------- 7. 按钮与链接 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 20px;
  border: 1px solid var(--line); border-radius: 2px;
  font-size: 14px; font-weight: 600; letter-spacing: .02em;
  color: var(--sand); background: transparent;
  transition: background-color .2s var(--ease), border-color .2s var(--ease),
              color .2s var(--ease), box-shadow .2s var(--ease);
}
.btn:hover { border-color: var(--gold); color: var(--gold-hi); }
.btn--gold {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  border-color: var(--gold); color: #101418; font-weight: 700;
}
.btn--gold:hover {
  background: linear-gradient(135deg, var(--gold-mist), var(--gold-hi));
  color: #101418; box-shadow: 0 0 0 1px rgba(240, 223, 168, .4);
}
.btn--ghost:hover { background: rgba(201, 162, 39, .08); }

.link-underline { position: relative; display: inline-block; color: var(--gold-hi); }
.link-underline::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: 50% 50%;
  transition: transform .24s var(--ease);
}
.link-underline:hover::after,
.link-underline:focus-visible::after { transform: scaleX(1); }

/* ---------- 8. 容器、章节、网格 ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 64px 0; }
.section--tight { padding: 32px 0; }
.section--loose { padding: 80px 0; }
@media (min-width: 900px) {
  .section { padding: 96px 0; }
  .section--tight { padding: 44px 0; }
  .section--loose { padding: 140px 0; }
}
.section-head {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
  gap: 18px; margin-bottom: 32px; padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 20px; }
@media (min-width: 900px) { .grid { gap: 28px; } }
[class*="span-"] { grid-column: span 12; }
@media (min-width: 768px) {
  .span-2 { grid-column: span 2; }
  .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-10 { grid-column: span 10; }
  .span-12 { grid-column: span 12; }
  .start-2 { grid-column-start: 2; }
  .start-3 { grid-column-start: 3; }
  .start-4 { grid-column-start: 4; }
  .start-5 { grid-column-start: 5; }
  .start-6 { grid-column-start: 6; }
  .start-7 { grid-column-start: 7; }
}

/* ---------- 9. 基础组件 ---------- */
.frame-box {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-2);
}
.frame-box::before,
.frame-box::after {
  content: ""; position: absolute; width: 14px; height: 14px;
  border: 1px solid var(--gold);
}
.frame-box::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame-box::after { right: -1px; bottom: -1px; border-left: 0; border-top: 0; }

.scale-strip {
  height: 22px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 12px);
}
.scale-strip--gold {
  background-image: repeating-linear-gradient(90deg, rgba(201, 162, 39, .7) 0 1px, transparent 1px 12px);
}

.tag {
  display: inline-flex; align-items: center;
  padding: 3px 9px; border: 1px solid var(--line); border-radius: 2px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  color: var(--gold-mist); background: rgba(201, 162, 39, .08);
}
.tag--copper { border-color: var(--copper); color: #A7D6C5; background: rgba(63, 127, 108, .16); }
.tag--clay { border-color: var(--clay); color: #E8B694; background: rgba(176, 106, 68, .16); }

.media-frame {
  position: relative; display: block; overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line); border-radius: 2px;
  background:
    linear-gradient(135deg, rgba(201, 162, 39, .16) 0%, rgba(10, 26, 42, 0) 46%),
    linear-gradient(160deg, #12293D 0%, #0A1A2A 58%, #1B2F3F 100%);
}
.media-frame img { width: 100%; height: 100%; object-fit: cover; display: block; filter: saturate(.92) contrast(1.04); }
.media-frame::before {
  content: ""; position: absolute; top: 0; left: 0; width: 18px; height: 1px;
  background: var(--gold); z-index: 2;
}
.media-frame figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 2;
  padding: 10px 14px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--gold-mist);
  background: linear-gradient(180deg, rgba(10, 26, 42, 0) 0%, rgba(10, 26, 42, .88) 100%);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.data-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 2px; background: var(--ink-2); }
.data-table { width: 100%; font-size: 14px; }
.data-table th, .data-table td { padding: 12px 14px; text-align: left; vertical-align: top; border: 1px solid var(--line); }
.data-table thead th {
  background: var(--ink-3); color: var(--gold-mist);
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; font-weight: 500;
}
.data-table tbody tr:hover td { background: rgba(201, 162, 39, .06); }
.data-table td.is-key { font-family: var(--mono); color: var(--gold-hi); }

.qa { border-top: 1px solid var(--line); }
.qa:last-child { border-bottom: 1px solid var(--line); }
.qa summary {
  position: relative; display: block; padding: 18px 44px 18px 0;
  font-size: 16px; font-weight: 600; color: var(--sand);
  list-style: none; transition: color .2s var(--ease);
}
.qa summary::-webkit-details-marker { display: none; }
.qa summary::after {
  content: ""; position: absolute; right: 10px; top: 50%;
  width: 11px; height: 11px; margin-top: -7px;
  border-right: 1px solid var(--gold); border-bottom: 1px solid var(--gold);
  transform: rotate(45deg);
  transition: transform .24s var(--ease);
}
.qa[open] summary::after { transform: rotate(-135deg); }
.qa summary:hover { color: var(--gold-hi); }
.qa-body { max-width: 68ch; padding: 0 0 20px; color: #C6D2DE; font-size: 15px; line-height: 1.85; }

.spy-bar {
  display: flex; flex-wrap: wrap; gap: 0; overflow: hidden;
  border: 1px solid var(--line); border-radius: 2px; background: var(--ink-2);
}
.spy-bar a {
  padding: 8px 14px; border-right: 1px solid var(--line);
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--stone);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.spy-bar a:hover { color: var(--gold-hi); }
.spy-bar a.is-active {
  background: linear-gradient(135deg, var(--gold-hi), var(--gold));
  color: #101418;
}

.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
  padding: 16px 0;
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em; color: var(--stone);
}
.breadcrumb li { display: flex; align-items: center; gap: 10px; }
.breadcrumb li + li::before { content: "/"; color: var(--line); }
.breadcrumb a:hover { color: var(--gold-hi); }
.breadcrumb [aria-current="page"] { color: var(--gold-mist); }

.surface-sand { background: var(--sand); color: #16232F; }
.surface-sand h1, .surface-sand h2, .surface-sand h3, .surface-sand h4 { color: #0A1A2A; }
.surface-sand .lede, .surface-sand .prose { color: #46586A; }
.surface-sand .aside-note { color: #6C7A87; }
.surface-sand .eyebrow { color: #8A6A12; }
.surface-sand .eyebrow::before { background: #8A6A12; }
.surface-sand a { color: #8A6A12; }
.surface-sand .rule-line { background: #CDBFA4; }
.surface-sand .frame-box { border-color: #CDBFA4; background: #FBF8F1; }
.surface-sand .data-table-wrap { border-color: #CDBFA4; background: #FBF8F1; }
.surface-sand .data-table th, .surface-sand .data-table td { border-color: #CDBFA4; }
.surface-sand .data-table thead th { background: #0A1A2A; color: var(--gold-mist); }
.surface-sand .data-table tbody tr:hover td { background: rgba(10, 26, 42, .05); }
.surface-sand .data-table td.is-key { color: #8A6A12; }

/* ---------- 10. 显现与减弱动效 ---------- */
.has-reveal [data-reveal] {
  opacity: 0; transform: translateY(4px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.has-reveal [data-reveal].is-in { opacity: 1; transform: none; }

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