/* =====================================================================
   澳门黄金金版 · 通用品牌站 共享样式
   文件路径：/assets/site.css
   内容：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件 / 响应式
   ===================================================================== */

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

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

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

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

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

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

a { color: inherit; }

main { display: block; }

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --ink: #0B0C0E;
  --graphite: #17191E;
  --graphite-2: #1F222A;
  --gold-deep: #8A6A1F;
  --gold: #C9A24B;
  --gold-light: #EBD08A;
  --foil: #FFF2CE;
  --seal: #7C1D22;
  --seal-deep: #5E1418;
  --paper: #F3EEE3;
  --paper-2: #E4DBC8;
  --teal: #22D3C5;
  --body: #D8D2C6;
  --body-dim: #8E8878;

  /* 线条 */
  --line: rgba(201, 162, 75, 0.26);
  --line-strong: rgba(201, 162, 75, 0.55);
  --foil-line: rgba(255, 242, 206, 0.34);

  /* 金属渐变 */
  --metal: linear-gradient(120deg, #8A6A1F 0%, #C9A24B 24%, #FFF2CE 48%, #EBD08A 64%, #8A6A1F 100%);

  /* 字体 */
  --font-display: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --font-body: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;

  /* 度量 */
  --w: 1440px;
  --gut: clamp(18px, 4vw, 64px);
  --header-h: 78px;
  --shadow-card: 0 22px 48px -28px rgba(0, 0, 0, 0.95);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink);
  color: var(--body);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--foil);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(36px, 6vw, 72px); line-height: 1.05; }
h2 { font-size: clamp(28px, 4vw, 44px); }
h3 { font-size: clamp(20px, 2.4vw, 26px); }
h4 { font-size: 19px; }

p { max-width: 74ch; }

strong { color: var(--gold-light); font-weight: 600; }

::selection { background: var(--gold); color: #1A1405; }

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 200;
  padding: 10px 20px;
  background: var(--foil);
  color: #1A1405;
  border: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top 0.22s var(--ease);
}

.skip-link:focus { top: 12px; }

/* ---------- 5. 阅读进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 90;
  background: rgba(201, 162, 75, 0.14);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #8A6A1F 0%, #C9A24B 32%, #FFF2CE 72%, #22D3C5 100%);
}

/* ---------- 6. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 70;
  background: rgba(11, 12, 14, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--foil-line) 22%, transparent 68%);
  pointer-events: none;
}

.site-header__inner {
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  min-height: var(--header-h);
  padding: 12px var(--gut);
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 44px);
}

.site-header__brandbar {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.6vw, 22px);
  flex: 0 0 auto;
  min-width: 0;
}

/* 品牌署名 */
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-lockup__mark {
  position: relative;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold);
  background: linear-gradient(150deg, rgba(201, 162, 75, 0.22), rgba(11, 12, 14, 0.92));
}

.brand-lockup__mark::before {
  content: "";
  width: 15px;
  height: 15px;
  background: var(--metal);
  box-shadow: inset 0 0 0 1px rgba(255, 242, 206, 0.6);
}

.brand-lockup__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px solid var(--foil-line);
  pointer-events: none;
}

.brand-lockup__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  min-width: 0;
}

.brand-lockup__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--foil);
  white-space: nowrap;
}

.brand-lockup__sub {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  white-space: nowrap;
}

/* 当季标记 */
.quarter-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 11px 5px 9px;
  border: 1px solid rgba(34, 211, 197, 0.42);
  background: rgba(34, 211, 197, 0.07);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--teal);
  cursor: default;
  white-space: nowrap;
}

.quarter-badge__dot {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  background: var(--teal);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(34, 211, 197, 0.16);
}

.quarter-badge__text { display: inline-block; }

.quarter-badge__pop {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  z-index: 20;
  min-width: 208px;
  padding: 14px 16px;
  display: grid;
  gap: 9px;
  background: var(--graphite);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-card);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.quarter-badge:hover .quarter-badge__pop,
.quarter-badge:focus .quarter-badge__pop,
.quarter-badge:focus-within .quarter-badge__pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.quarter-badge__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  font-size: 12px;
  color: var(--body);
}

.quarter-badge__row em {
  font-style: normal;
  letter-spacing: 0.08em;
  color: var(--body-dim);
}

.quarter-badge__row b {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--gold-light);
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 30px);
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  margin: 0;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  color: var(--body);
  text-decoration: none;
  font-size: 14.5px;
  letter-spacing: 0.09em;
  transition: color 0.22s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--metal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.34s var(--ease);
}

.site-nav__link:hover { color: var(--foil); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--foil); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -11px;
  width: 4px;
  height: 4px;
  background: var(--gold);
  transform: translateX(-50%) rotate(45deg);
}

/* 头部行动入口 */
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--gold);
  background: linear-gradient(150deg, rgba(201, 162, 75, 0.18), rgba(201, 162, 75, 0.02));
  color: var(--foil);
  text-decoration: none;
  font-size: 13.5px;
  letter-spacing: 0.16em;
  white-space: nowrap;
  transition: background 0.26s var(--ease), color 0.26s var(--ease), box-shadow 0.26s var(--ease);
}

.nav-cta::after {
  content: "›";
  font-size: 15px;
  line-height: 1;
  color: var(--gold-light);
  transition: transform 0.26s var(--ease), color 0.26s var(--ease);
}

.nav-cta:hover {
  background: var(--metal);
  color: #1A1405;
  box-shadow: 0 12px 30px -14px rgba(201, 162, 75, 0.9);
}

.nav-cta:hover::after { color: #1A1405; transform: translateX(3px); }

/* 移动端开关 */
.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--line-strong);
  background: rgba(201, 162, 75, 0.06);
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--gold);
  transition: background 0.24s var(--ease);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--gold);
  transition: transform 0.28s var(--ease), top 0.28s var(--ease), background 0.24s var(--ease);
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 0; transform: rotate(45deg); background: var(--foil); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { top: 0; transform: rotate(-45deg); background: var(--foil); }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 10vw, 140px);
  background: var(--graphite);
  border-top: 1px solid var(--line-strong);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--metal);
  opacity: 0.62;
}

.footer-inner { padding-block: clamp(48px, 7vw, 88px) 34px; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.footer-col--brand { max-width: 360px; }

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-brand .brand-lockup__mark {
  width: 34px;
  height: 34px;
  flex-basis: 34px;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.05em;
  color: var(--foil);
}

.footer-coords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.footer-coords span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.footer-coords i {
  display: inline-block;
  width: 5px;
  height: 5px;
  background: var(--gold-light);
  transform: rotate(45deg);
}

.footer-note {
  margin-bottom: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-dim);
  max-width: 34ch;
}

.footer-seal {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 4px;
  background: var(--seal);
  color: #F7E9DA;
  border: 1px solid rgba(255, 242, 206, 0.34);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.25;
  letter-spacing: 0.06em;
  text-align: center;
  transform: rotate(-3deg);
}

.footer-col__title {
  display: block;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-col__list {
  display: grid;
  gap: 11px;
  margin: 0;
}

.footer-col__list a {
  position: relative;
  display: inline-block;
  font-size: 14.5px;
  color: var(--body);
  text-decoration: none;
  transition: color 0.22s var(--ease), padding-left 0.22s var(--ease);
}

.footer-col__list a::before {
  content: "—";
  margin-right: 8px;
  color: var(--gold-deep);
  transition: color 0.22s var(--ease);
}

.footer-col__list a:hover { color: var(--foil); padding-left: 4px; }
.footer-col__list a:hover::before { color: var(--gold-light); }

.footer-contact {
  margin-top: clamp(34px, 5vw, 56px);
  padding: clamp(20px, 3vw, 30px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px 34px;
  background: linear-gradient(180deg, rgba(201, 162, 75, 0.07), rgba(201, 162, 75, 0) 58%), var(--ink);
  border: 1px solid var(--line);
}

.footer-contact__row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.footer-contact__val {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--body);
  word-break: break-word;
}

.footer-legal {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 30px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--body-dim);
}

.footer-legal__icp { color: var(--gold-deep); }
.footer-legal__meta { color: var(--body-dim); }

/* ---------- 8. 通用容器与工具 ---------- */
.container {
  width: 100%;
  max-width: var(--w);
  margin-inline: auto;
  padding-inline: var(--gut);
}

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

.rule--gold {
  background: var(--metal);
  opacity: 0.65;
}

.mono { font-family: var(--font-mono); letter-spacing: 0.08em; }
.text-gold { color: var(--gold-light); }
.text-teal { color: var(--teal); }
.text-dim { color: var(--body-dim); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.split {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.stack { display: grid; gap: 24px; }
.stack--lg { gap: 48px; }
.stack--sm { gap: 12px; }

/* ---------- 9. 区块与标题 ---------- */
.section { padding-block: clamp(56px, 9vw, 124px); }
.section--tight { padding-block: clamp(36px, 5vw, 68px); }

.section--paper {
  background: var(--paper);
  color: #201C14;
}

.section__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
  transition: color 0.45s var(--ease);
}

.section__eyebrow::after {
  content: "";
  flex: 1 1 auto;
  max-width: 130px;
  height: 1px;
  background: var(--line);
  transition: background 0.45s var(--ease);
}

[data-section].is-lit .section__eyebrow { color: var(--gold-light); }
[data-section].is-lit .section__eyebrow::after { background: var(--gold); }

.section__title {
  margin-bottom: 18px;
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.2;
}

.section__lede {
  max-width: 44ch;
  font-size: 17px;
  color: var(--body);
}

.section--paper .section__eyebrow { color: var(--gold-deep); }
.section--paper .section__eyebrow::after { background: rgba(20, 18, 12, 0.18); }
.section--paper .section__title { color: #14120C; }
.section--paper .section__lede { color: #44402F; }

/* ---------- 10. 栅格 ---------- */
.grid { display: grid; gap: 32px; }

.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--8-4 { grid-template-columns: 8fr 4fr; }
.grid--5-7 { grid-template-columns: 5fr 7fr; }

.grid--split {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.grid--index {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

/* ---------- 11. 数据卡（金箔裱框） ---------- */
.data-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 34px);
  background: var(--graphite);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-card);
}

.data-card::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--foil-line);
  pointer-events: none;
}

.data-card--focus {
  background: linear-gradient(165deg, #1E1A0E 0%, #0B0C0E 62%);
}

.data-card__label {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.data-card__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.02em;
  background: var(--metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .data-card__value { color: var(--foil); }
}

.data-card__unit {
  margin-left: 8px;
  font-size: 0.38em;
  letter-spacing: 0.08em;
}

.data-card__note {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--body-dim);
  max-width: 40ch;
}

/* ---------- 12. 档案标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  border: 1px solid var(--line-strong);
  background: rgba(201, 162, 75, 0.06);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
  white-space: nowrap;
}

.tag--seal {
  background: var(--seal);
  border-color: var(--seal);
  color: #F7E9DA;
}

.tag--teal {
  background: rgba(34, 211, 197, 0.08);
  border-color: rgba(34, 211, 197, 0.5);
  color: var(--teal);
}

.tag--paper {
  background: rgba(20, 18, 12, 0.05);
  border-color: rgba(20, 18, 12, 0.24);
  color: #5A5340;
}

/* ---------- 13. 档案流水索引 ---------- */
.ledger {
  display: grid;
  border-top: 1px solid var(--line);
}

.ledger__row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background 0.22s var(--ease), padding-left 0.26s var(--ease);
}

.ledger__row:hover {
  background: rgba(201, 162, 75, 0.06);
  padding-left: 14px;
}

.ledger__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.ledger__label {
  font-size: 15.5px;
  color: var(--body);
}

.ledger__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--body-dim);
  white-space: nowrap;
}

/* ---------- 14. 手风琴 ---------- */
.accordion { border-top: 1px solid var(--line); }

.accordion__item { border-bottom: 1px solid var(--line); }

.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--body);
  transition: color 0.22s var(--ease);
}

.accordion__trigger:hover { color: var(--foil); }
.accordion__trigger[aria-expanded="true"] { color: var(--gold-light); }

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line-strong);
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--gold);
}

.accordion__icon::before {
  width: 10px;
  height: 1px;
  transform: translate(-50%, -50%);
}

.accordion__icon::after {
  width: 1px;
  height: 10px;
  transform: translate(-50%, -50%);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.accordion__panel {
  padding: 0 4px 26px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body-dim);
  max-width: 62ch;
}

.accordion__panel[hidden] { display: none; }

/* ---------- 15. 标签筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--body-dim);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.filter-chip:hover {
  color: var(--foil);
  border-color: var(--gold);
}

.filter-chip[aria-pressed="true"] {
  background: var(--metal);
  border-color: var(--foil);
  color: #1A1405;
}

/* ---------- 16. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--foil);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.26s var(--ease), color 0.26s var(--ease), box-shadow 0.26s var(--ease), border-color 0.26s var(--ease);
}

.btn--gold {
  background: linear-gradient(140deg, #8A6A1F 0%, #C9A24B 38%, #EBD08A 55%, #C9A24B 82%);
  border-color: var(--foil);
  color: #1A1405;
}

.btn--gold:hover { box-shadow: 0 16px 38px -18px rgba(235, 208, 138, 0.9); }

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--gold-light);
}

.btn--ghost:hover {
  border-color: var(--gold-light);
  color: var(--foil);
}

.btn--seal {
  background: var(--seal);
  border-color: var(--seal);
  color: #F7E9DA;
}

.btn--seal:hover { background: var(--seal-deep); }

.btn__arrow {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

/* ---------- 17. 面包屑 ---------- */
.breadcrumb {
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--body-dim);
}

.breadcrumb__link {
  color: var(--body-dim);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.breadcrumb__link:hover { color: var(--gold-light); }

.breadcrumb__sep { color: var(--gold-deep); }

.breadcrumb__item[aria-current="page"] { color: var(--gold-light); }

/* ---------- 18. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--graphite);
}

.media-frame__inner {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(201, 162, 75, 0.18), rgba(11, 12, 14, 0.9) 46%, rgba(124, 29, 34, 0.2)),
    repeating-linear-gradient(45deg, rgba(255, 242, 206, 0.05) 0 2px, transparent 2px 7px);
}

.media-frame__inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-light);
  background: linear-gradient(180deg, transparent, rgba(11, 12, 14, 0.82));
}

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

/* ---------- 19. 动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

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

[data-scan] { position: relative; }

[data-scan]::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  opacity: 0;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255, 242, 206, 0.8), transparent);
}

[data-scan].is-in::after { animation: mg-scan 0.48s ease-out 1; }

@keyframes mg-scan {
  0% { width: 0; opacity: 0; }
  18% { opacity: 1; }
  100% { width: 100%; opacity: 0; }
}

[data-section] { scroll-margin-top: calc(var(--header-h) + 24px); }

/* ---------- 20. 响应式 ---------- */
@media (max-width: 1180px) {
  .quarter-badge { display: none; }
}

@media (max-width: 1080px) {
  .grid--7-5,
  .grid--8-4,
  .grid--5-7 { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; max-width: none; }
  .footer-col--brand .footer-note { max-width: 56ch; }
}

@media (max-width: 980px) {
  :root { --header-h: 68px; }

  .site-header__inner { gap: 14px; }

  .brand-lockup__name { font-size: 18px; }
  .brand-lockup__sub { display: none; }

  .nav-toggle { display: block; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 75;
    margin: 0;
    padding: clamp(26px, 6vw, 48px) var(--gut) 48px;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    overflow-y: auto;
    background:
      radial-gradient(120% 80% at 100% 0%, rgba(201, 162, 75, 0.14), transparent 62%),
      var(--ink);
    border-top: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav__list {
    counter-reset: navIdx;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .site-nav__item {
    counter-increment: navIdx;
    position: relative;
    border-bottom: 1px solid var(--line);
  }

  .site-nav__item::after {
    content: "0" counter(navIdx);
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    color: var(--gold-deep);
    pointer-events: none;
  }

  .site-nav__link {
    display: block;
    padding: 20px 4px;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 25px;
    letter-spacing: 0.04em;
    color: var(--body);
  }

  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"]::before { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--gold-light); }
  .site-nav__link[aria-current="page"]::after {
    display: block;
    transform: scaleX(1);
    left: 4px;
    right: auto;
    width: 46px;
  }

  .nav-cta {
    margin-top: 28px;
    justify-content: center;
    padding: 16px 22px;
    font-size: 14px;
  }
}

@media (max-width: 720px) {
  body { font-size: 16.5px; }

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

  .ledger__row {
    grid-template-columns: auto 1fr;
    row-gap: 6px;
  }

  .ledger__meta { grid-column: 2; }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .brand-lockup__mark { width: 34px; height: 34px; flex-basis: 34px; }
  .brand-lockup__name { font-size: 17px; }
  .footer-contact { grid-template-columns: 1fr; }
}

/* ---------- 21. 减弱动效 ---------- */
@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 !important;
    transform: none !important;
  }

  [data-scan]::after { display: none !important; }
}