/* ==========================================================================
   意大利贵宾赌场 · 中国站  共享样式表  /assets/site.css
   框架式导航 + 珠宝色分区 + 硬阴影粗野主义
   ========================================================================== */

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

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

body { margin: 0; }

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

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

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

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

a { color: inherit; }

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

/* ---------- 2. Design tokens ---------- */
:root {
  /* 色板 */
  --black: #0B0B0C;
  --green: #008C45;
  --red: #CD212A;
  --marble: #F4F1EA;
  --champagne: #C8B07A;
  --gold-deep: #8A6E2F;
  --wine: #7A1420;
  --forest: #14342B;
  --indigo: #3B2A5A;
  --graphite: #2A2A2C;
  --muted: #4A4A4E;
  --ivory: #FFFFFF;

  /* 字体 */
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  /* 规格 */
  --frame-w: 272px;
  --gutter: clamp(18px, 3.2vw, 44px);
  --edge: 2px;
  --hard-shadow: 8px 8px 0 var(--black);
  --hard-shadow-sm: 4px 4px 0 var(--black);

  /* 字阶 */
  --fs-12: 12px;
  --fs-14: 14px;
  --fs-16: 16px;
  --fs-20: 20px;
  --fs-28: 28px;
  --fs-44: 44px;
  --fs-72: 72px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.75;
  font-weight: 400;
  color: var(--graphite);
  background-color: var(--marble);
  background-image:
    linear-gradient(0deg, rgba(138, 110, 47, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 110, 47, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

strong, b { font-weight: 600; }

::selection {
  background: var(--green);
  color: var(--ivory);
}

:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 2px;
  box-shadow: 0 0 0 2px var(--black);
}

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  transform: translateY(-240%);
  display: inline-block;
  padding: 10px 18px;
  background: var(--champagne);
  color: var(--black);
  font-size: var(--fs-14);
  font-weight: 700;
  text-decoration: none;
  border: var(--edge) solid var(--black);
  transition: transform 0.18s ease-out;
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 5. 布局与区块 ---------- */
#main-content { display: block; }

.container {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
}

.section {
  padding: clamp(48px, 7vw, 104px) var(--gutter);
  position: relative;
}

.section--marble { background-color: var(--marble); color: var(--graphite); }
.section--black { background-color: var(--black); color: var(--marble); }
.section--wine { background-color: var(--wine); color: var(--ivory); }
.section--forest { background-color: var(--forest); color: var(--ivory); }
.section--indigo { background-color: var(--indigo); color: var(--ivory); }

.section--black .lede,
.section--wine .lede,
.section--forest .lede,
.section--indigo .lede { color: rgba(244, 241, 234, 0.8); }

.section--black h1, .section--black h2, .section--black h3,
.section--wine h1, .section--wine h2, .section--wine h3,
.section--forest h1, .section--forest h2, .section--forest h3,
.section--indigo h1, .section--indigo h2, .section--indigo h3 { color: var(--champagne); }

.divider-flag {
  height: 6px;
  width: 100%;
  border-top: var(--edge) solid var(--black);
  border-bottom: var(--edge) solid var(--black);
  background-image: linear-gradient(90deg,
    var(--green) 0 33.33%,
    var(--marble) 33.33% 66.66%,
    var(--red) 66.66% 100%);
}

/* ---------- 6. 标题与文字 ---------- */
.title-xl {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.04;
  margin: 0;
}

.title-lg {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin: 0;
}

.title-md {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.75rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 70ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
}

.lede {
  font-size: clamp(1rem, 1.35vw, 1.125rem);
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 5px 11px;
  background: var(--black);
  color: var(--champagne);
  border: var(--edge) solid var(--black);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.4;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.eyebrow--gold {
  background: var(--champagne);
  color: var(--black);
  border-color: var(--black);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-deep);
  text-decoration: none;
  border-bottom: var(--edge) solid currentColor;
  padding-bottom: 2px;
  transition: color 0.18s ease-out;
}

.link-more::after {
  content: "→";
  transition: transform 0.18s ease-out;
}

.link-more:hover { color: var(--red); }
.link-more:hover::after { transform: translateX(4px); }

.section--black .link-more,
.section--wine .link-more,
.section--forest .link-more,
.section--indigo .link-more { color: var(--champagne); }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: center;
  text-decoration: none;
  border: var(--edge) solid var(--black);
  box-shadow: var(--hard-shadow-sm);
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out,
              background-color 0.18s ease-out, color 0.18s ease-out,
              border-color 0.18s ease-out;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--black);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--black);
}

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

.btn--gold:hover {
  background: var(--ivory);
  color: var(--black);
}

.btn--ghost {
  background: transparent;
  color: var(--champagne);
  border-color: var(--champagne);
  box-shadow: 4px 4px 0 rgba(200, 176, 122, 0.35);
}

.btn--ghost:hover {
  background: var(--champagne);
  color: var(--black);
  border-color: var(--champagne);
  box-shadow: 6px 6px 0 rgba(200, 176, 122, 0.35);
}

/* ---------- 8. 页头框架 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--black);
  color: var(--marble);
  border-bottom: var(--edge) solid var(--black);
}

.site-header::before {
  content: "";
  display: block;
  height: 5px;
  background-image: linear-gradient(90deg,
    var(--green) 0 33.33%,
    var(--marble) 33.33% 66.66%,
    var(--red) 66.66% 100%);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 62px;
  padding: 8px var(--gutter);
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--champagne);
  text-decoration: none;
  min-width: 0;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  color: var(--champagne);
  border: var(--edge) solid var(--champagne);
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--marble);
  line-height: 1.25;
  white-space: nowrap;
}

.brand__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(200, 176, 122, 0.85);
  line-height: 1.5;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 菜单按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 12px;
  border: var(--edge) solid var(--champagne);
  color: var(--champagne);
  transition: background-color 0.18s ease-out, color 0.18s ease-out;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: var(--champagne);
  color: var(--black);
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--champagne);
  transition: transform 0.2s ease-out, background-color 0.18s ease-out;
}

.nav-toggle__bars { position: relative; }

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.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 { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

.nav-toggle:hover .nav-toggle__bars,
.nav-toggle:hover .nav-toggle__bars::before,
.nav-toggle:hover .nav-toggle__bars::after { background: var(--black); }

.nav-toggle:hover[aria-expanded="true"] .nav-toggle__bars { background: transparent; }

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- 9. 导航 ---------- */
.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(86vw, 360px);
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 92px 24px 32px;
  overflow-y: auto;
  background-color: var(--black);
  background-image: linear-gradient(90deg,
    var(--green) 0 33.33%,
    var(--marble) 33.33% 66.66%,
    var(--red) 66.66% 100%);
  background-repeat: no-repeat;
  background-size: 100% 5px;
  background-position: top left;
  border-left: var(--edge) solid var(--champagne);
  transform: translateX(102%);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1);
}

.site-nav[data-open] { transform: translateX(0); }

.site-nav__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(200, 176, 122, 0.2);
}

.site-nav__item { border-bottom: 1px solid rgba(200, 176, 122, 0.2); }

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 48px;
  padding: 12px 10px 12px 14px;
  color: var(--marble);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.18s ease-out, background-color 0.18s ease-out,
              border-color 0.18s ease-out;
}

.site-nav__link:hover {
  color: var(--champagne);
  background: rgba(200, 176, 122, 0.09);
  border-left-color: rgba(200, 176, 122, 0.5);
}

.site-nav__link[aria-current="page"] {
  color: var(--champagne);
  background: rgba(200, 176, 122, 0.12);
  border-left-color: var(--champagne);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--champagne);
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

.site-nav__label {
  font-size: 15px;
  line-height: 1.5;
}

.header-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

/* 遮罩 */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 65;
  background: rgba(11, 11, 12, 0.62);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease-out;
}

.nav-scrim[data-open] {
  opacity: 1;
  pointer-events: auto;
}

body.nav-open { overflow: hidden; }

/* 滚动进度条 */
.scroll-rail {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  z-index: 80;
  background: rgba(244, 241, 234, 0.14);
}

.scroll-rail__bar {
  display: block;
  height: 100%;
  width: 0;
  background-image: linear-gradient(90deg, var(--green), var(--champagne) 55%, var(--red));
  transition: width 0.12s linear;
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  background: var(--black);
  color: rgba(244, 241, 234, 0.82);
  border-top: var(--edge) solid var(--black);
}

.footer-rule {
  height: 6px;
  background-image: linear-gradient(90deg,
    var(--green) 0 33.33%,
    var(--marble) 33.33% 66.66%,
    var(--red) 66.66% 100%);
}

.footer__inner {
  max-width: 1440px;
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) var(--gutter) clamp(26px, 3vw, 40px);
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.footer__brand { display: flex; flex-direction: column; gap: 12px; }

.footer__name {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--champagne);
}

.footer__intro {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.78);
  max-width: 42ch;
}

.footer__note {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.55);
  max-width: 42ch;
  padding-left: 12px;
  border-left: var(--edge) solid var(--wine);
}

.footer__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

.footer__col { display: flex; flex-direction: column; gap: 14px; }

.footer__col-title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--champagne);
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(200, 176, 122, 0.28);
}

.footer__list { display: flex; flex-direction: column; gap: 10px; }

.footer__link {
  display: inline-block;
  font-size: 14px;
  color: rgba(244, 241, 234, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.footer__link:hover {
  color: var(--champagne);
  border-bottom-color: var(--champagne);
}

.footer-contact {
  margin-top: clamp(32px, 4vw, 56px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid rgba(200, 176, 122, 0.24);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px 28px;
}

.footer-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
}

.footer-contact__label {
  flex: 0 0 auto;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--champagne);
}

.footer-contact__value {
  font-size: 14px;
  color: var(--marble);
  word-break: break-word;
}

.footer-contact__note {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.55);
  max-width: 74ch;
}

.footer__bottom {
  margin-top: clamp(28px, 3.5vw, 44px);
  padding-top: 20px;
  border-top: 1px solid rgba(200, 176, 122, 0.24);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.footer__legal {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: rgba(244, 241, 234, 0.62);
  font-variant-numeric: tabular-nums;
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.footer__icp,
.footer__region {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--champagne);
  font-variant-numeric: tabular-nums;
}

.footer__region { color: rgba(200, 176, 122, 0.75); }

/* ---------- 11. 内容网格与卡片 ---------- */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--ivory);
  border: var(--edge) solid var(--black);
  box-shadow: var(--hard-shadow);
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out,
              border-color 0.18s ease-out;
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  border-color: var(--gold-deep);
  box-shadow: 8px 12px 0 var(--black);
}

.card__tag {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  background: var(--black);
  color: var(--champagne);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}

.card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--graphite);
}

.card__body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.panel {
  background: var(--ivory);
  border: var(--edge) solid var(--black);
  padding: clamp(18px, 2.4vw, 30px);
}

/* ---------- 12. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--black);
  border: var(--edge) solid var(--black);
  box-shadow: var(--hard-shadow);
  aspect-ratio: 4 / 3;
}

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

.media-frame--portrait { aspect-ratio: 4 / 5; }
.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--gold { box-shadow: 8px 8px 0 var(--gold-deep); }

.media-frame__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-deep);
  font-variant-numeric: tabular-nums;
}

.section--black .media-frame__caption,
.section--wine .media-frame__caption,
.section--forest .media-frame__caption,
.section--indigo .media-frame__caption { color: var(--champagne); }

/* ---------- 13. 可展开内容组 ---------- */
.accordion {
  display: flex;
  flex-direction: column;
  border-top: var(--edge) solid var(--black);
}

.accordion__item { border-bottom: var(--edge) solid var(--black); }

.accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  min-height: 48px;
  padding: 16px 6px;
  text-align: left;
  color: var(--graphite);
  transition: color 0.18s ease-out, background-color 0.18s ease-out;
}

.accordion__trigger:hover { background: rgba(138, 110, 47, 0.08); }

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

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  transition: transform 0.2s ease-out;
}

.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.accordion__icon::before {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.accordion__icon::after {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.accordion__item[data-open] .accordion__icon { transform: rotate(45deg); }

.accordion__question {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 600;
  line-height: 1.5;
}

.accordion__panel { display: none; }

.accordion__item[data-open] .accordion__panel {
  display: block;
  animation: panel-in 0.22s ease-out;
}

.accordion__inner {
  padding: 0 6px 20px 30px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

@keyframes panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

.section--black .accordion,
.section--black .accordion__item,
.section--wine .accordion,
.section--wine .accordion__item,
.section--forest .accordion,
.section--forest .accordion__item,
.section--indigo .accordion,
.section--indigo .accordion__item { border-color: rgba(200, 176, 122, 0.5); }

.section--black .accordion__trigger,
.section--wine .accordion__trigger,
.section--forest .accordion__trigger,
.section--indigo .accordion__trigger { color: var(--marble); }

.section--black .accordion__inner,
.section--wine .accordion__inner,
.section--forest .accordion__inner,
.section--indigo .accordion__inner { color: rgba(244, 241, 234, 0.8); }

/* ---------- 14. 标签页 ---------- */
.tabs { display: flex; flex-direction: column; gap: clamp(18px, 2.4vw, 28px); }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tabs__tab {
  min-height: 44px;
  padding: 10px 16px;
  background: var(--ivory);
  color: var(--graphite);
  border: var(--edge) solid var(--black);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: background-color 0.18s ease-out, color 0.18s ease-out;
}

.tabs__tab:hover { background: rgba(200, 176, 122, 0.35); }

.tabs__tab[aria-selected="true"] {
  background: var(--champagne);
  color: var(--black);
}

.tabs__panels { position: relative; }

.tabs__panel { display: block; }

.tabs__panel[hidden] { display: none; }

/* ---------- 15. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-deep);
  font-variant-numeric: tabular-nums;
}

.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumbs__item a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease-out;
}

.breadcrumbs__item a:hover { border-bottom-color: currentColor; }

.breadcrumbs__sep { color: rgba(138, 110, 47, 0.55); }

/* ---------- 16. 滚动显现 ---------- */
.js-enabled [data-reveal] {
  opacity: 0;
  will-change: opacity, transform;
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}

.js-enabled [data-reveal="up"] { transform: translateY(24px); }
.js-enabled [data-reveal="left"] { transform: translateX(-24px); }
.js-enabled [data-reveal="right"] { transform: translateX(24px); }

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

/* ---------- 17. 响应式 ---------- */
@media (min-width: 600px) {
  .footer__cols { grid-template-columns: repeat(3, 1fr); }
  .footer-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .grid--8-4 { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }
  .grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

  .footer__top { grid-template-columns: minmax(220px, 1fr) 2fr; }

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

@media (min-width: 1080px) {
  body {
    padding-left: var(--frame-w);
    background-size: 64px 64px;
  }

  body.nav-open { overflow: visible; }

  /* 左侧固定框架 */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: auto;
    width: var(--frame-w);
    display: flex;
    flex-direction: column;
    border-bottom: none;
    overflow-y: auto;
    overflow-x: hidden;
  }

  .site-header::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 5px;
    background-image: linear-gradient(180deg,
      var(--green) 0 33.33%,
      var(--marble) 33.33% 66.66%,
      var(--red) 66.66% 100%);
  }

  .site-header__inner {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 26px;
    min-height: 0;
    height: 100%;
    padding: 30px 26px 34px;
  }

  .brand { flex-direction: column; align-items: flex-start; gap: 12px; }

  .brand__name { font-size: 20px; white-space: normal; }

  .brand__tag { white-space: normal; }

  .nav-toggle { display: none; }

  .nav-scrim { display: none; }

  .site-nav {
    position: static;
    width: auto;
    flex: 1 1 auto;
    padding: 0;
    overflow: visible;
    transform: none;
    transition: none;
    background-color: transparent;
    background-image: none;
    border-left: none;
  }

  .site-nav__list { border-top: none; }

  .site-nav__item { border-bottom: 1px solid rgba(200, 176, 122, 0.16); }

  .site-nav__link { min-height: 44px; padding: 10px 8px 10px 12px; }

  .header-actions { margin-top: auto; }

  .scroll-rail { left: var(--frame-w); }

  .skip-link { left: calc(var(--frame-w) + 12px); }

  .footer__cols { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1280px) {
  .footer-contact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 18. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.15s !important;
    transition-property: opacity, color, background-color, border-color !important;
  }

  .site-nav { transition-duration: 0.15s !important; }

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

  .btn:hover,
  .btn:active { transform: none; }

  .card:hover,
  .card:focus-within { transform: none; }

  .scroll-rail__bar { transition: none; }
}