/* =========================================================
   金莎体育 · /assets/site.css
   共享外壳：刊头式头部、竞技场页脚、通用组件
   ========================================================= */

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

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--gold-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }

::selection {
  background: var(--gold);
  color: var(--ink);
}

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 品牌色 */
  --gold: #D9A441;
  --gold-deep: #A9741E;
  --gold-light: #F4D58D;
  --green-deep: #0E3B32;
  --green: #1B5B4A;
  --ink: #111417;
  --graphite: #252B30;
  --paper: #F7F1E6;
  --orange: #F05A28;
  --cyan: #2FE6C8;
  --gray: #8D979C;
  --ink-soft: #4A5257;

  /* 线条与阴影 */
  --line-gold: rgba(217, 164, 65, 0.35);
  --line-gold-soft: rgba(217, 164, 65, 0.18);
  --line-dark: rgba(247, 241, 230, 0.16);
  --line-ink: rgba(17, 20, 23, 0.14);
  --shadow-hard: 5px 5px 0 0 rgba(17, 20, 23, 0.55);
  --shadow-hard-sm: 3px 3px 0 0 rgba(17, 20, 23, 0.5);

  /* 字体 */
  --font-display: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --font-accent: var(--font-display);

  /* 字号阶梯 */
  --step--1: 0.8125rem;
  --step-0: 1rem;
  --step-1: clamp(1.0625rem, 1.3vw, 1.1875rem);
  --step-2: clamp(1.3rem, 2.3vw, 1.85rem);
  --step-3: clamp(1.85rem, 4vw, 3rem);
  --step-4: clamp(2.4rem, 7vw, 6.5rem);

  /* 节奏 */
  --gutter: clamp(1rem, 5vw, 4rem);
  --section-y: clamp(2.5rem, 6.5vw, 5.5rem);
}

/* ---------- 3. 焦点与无障碍 ---------- */
:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 1px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -6rem;
  z-index: 300;
  display: inline-block;
  padding: 0.7rem 1.15rem;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 0 rgba(0, 0, 0, 0.4);
  transition: top 0.22s ease;
}

.skip-link:focus {
  top: 0.75rem;
}

/* ---------- 4. 布局容器 ---------- */
.container {
  width: min(calc(100% - (var(--gutter) * 2)), 1240px);
  margin-inline: auto;
}

#main-content {
  display: block;
  scroll-margin-top: clamp(96px, 16vh, 170px);
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--paper { background: var(--paper); color: var(--ink); }

.section--gold {
  background: var(--gold-light);
  color: var(--ink);
  border-top: 2px solid var(--gold-deep);
  border-bottom: 2px solid var(--gold-deep);
}

.section--dark {
  background: var(--green-deep);
  color: var(--paper);
  background-image:
    linear-gradient(90deg, rgba(217, 164, 65, 0.07) 1px, transparent 1px),
    linear-gradient(0deg, rgba(217, 164, 65, 0.05) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px;
}

.section--dark .h-section,
.section--dark .h-display { color: var(--gold-light); }

.rule {
  height: 0;
  border: 0;
  border-top: 2px solid var(--line-ink);
  margin-block: clamp(1.25rem, 3vw, 2.25rem);
}

.section--dark .rule { border-top-color: var(--line-dark); }

/* ---------- 5. 文字层级 ---------- */
.h-display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-4);
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-wrap: balance;
}

.h-section {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--step-3);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-wrap: balance;
}

.lede {
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 64ch;
}

.section--dark .lede { color: rgba(247, 241, 230, 0.82); }

.body-text {
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 70ch;
}

.body-text + .body-text { margin-top: 1em; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-deep);
  line-height: 1.2;
}

.eyebrow::before {
  content: "";
  display: block;
  width: 1.6rem;
  height: 3px;
  background: var(--orange);
}

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

.figure {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  --btn-bg: var(--gold);
  --btn-fg: var(--ink);
  --btn-bd: var(--gold-deep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.68rem 1.1rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 2px solid var(--btn-bd);
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-hard-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}

.btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: 5px 5px 0 0 rgba(17, 20, 23, 0.5);
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 0 rgba(17, 20, 23, 0.5);
}

.btn-primary {
  --btn-bg: var(--orange);
  --btn-fg: var(--paper);
  --btn-bd: #A8381A;
}

.btn-primary:hover {
  --btn-bg: #FF6A34;
}

.btn-gold {
  --btn-bg: var(--gold);
  --btn-fg: var(--ink);
  --btn-bd: var(--gold-deep);
}

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--paper);
  --btn-bd: rgba(247, 241, 230, 0.42);
  box-shadow: none;
}

.btn-ghost:hover {
  --btn-bg: rgba(247, 241, 230, 0.1);
  --btn-bd: var(--gold);
  --btn-fg: var(--gold-light);
  transform: none;
  box-shadow: none;
}

.btn-ghost:active { transform: none; box-shadow: none; }

.btn-sm {
  padding: 0.44rem 0.82rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

/* ---------- 7. 头部 · 刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(90deg, rgba(217, 164, 65, 0.09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(217, 164, 65, 0.055) 1px, transparent 1px);
  background-size: 64px 64px, 64px 64px;
  border-bottom: 2px solid var(--gold);
  box-shadow: 0 10px 24px -18px rgba(0, 0, 0, 0.9);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem var(--gutter) 0.75rem;
  transition: padding 0.3s ease;
}

.masthead-eyebrow {
  font-family: var(--font-accent);
  font-size: 0.6rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gray);
  transition: opacity 0.3s ease;
}

.wordmark {
  justify-self: center;
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.2vw, 2.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.16em;
  text-indent: 0.16em;
  color: var(--gold);
  text-decoration: none;
  white-space: nowrap;
  text-shadow: 0 2px 0 rgba(169, 116, 30, 0.6);
  transition: font-size 0.3s ease, color 0.2s ease;
}

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

.masthead-meta {
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
}

.refresh-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.26rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--gold-light);
  background: rgba(217, 164, 65, 0.1);
  border: 1.5px solid var(--line-gold);
  border-radius: 999px;
  white-space: nowrap;
}

.refresh-dot {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(240, 90, 40, 0.18);
  flex: none;
}

@media (prefers-reduced-motion: no-preference) {
  .refresh-dot { animation: dotPulse 2.6s ease-in-out 3; }
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(240, 90, 40, 0.18); }
  50% { box-shadow: 0 0 0 6px rgba(240, 90, 40, 0.05); }
}

.chip-link {
  display: inline-block;
  padding: 0.26rem 0.7rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(247, 241, 230, 0.76);
  background: transparent;
  border: 1.5px solid rgba(247, 241, 230, 0.22);
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.chip-link:hover {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold-deep);
}

/* ---------- 8. 头部 · 导航行 ---------- */
.nav-row {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.6vw, 1.5rem);
  padding: 0 var(--gutter) 0.6rem;
  border-top: 1px solid var(--line-gold-soft);
  padding-top: 0.15rem;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.8vw, 1.6rem);
  flex-wrap: wrap;
  justify-content: center;
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 0.62rem 0.2rem 0.52rem;
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: rgba(247, 241, 230, 0.76);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

.nav-link:hover { color: var(--paper); }
.nav-link:hover::after { transform: scaleX(0.55); }

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

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"]::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1.05rem;
  height: 3px;
  background: var(--orange);
  z-index: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  background: transparent;
  color: var(--paper);
  border: 1.5px solid var(--line-gold);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  cursor: pointer;
}

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

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 1rem;
  height: 2px;
  background: var(--gold);
  flex: none;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 1rem;
  height: 2px;
  background: var(--gold);
  transition: transform 0.25s ease, top 0.25s ease;
}

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

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

/* 头部压缩态 */
.site-header.is-compact .masthead {
  padding-top: 0.3rem;
  padding-bottom: 0.28rem;
}

.site-header.is-compact .wordmark { font-size: clamp(1.1rem, 2vw, 1.4rem); }
.site-header.is-compact .masthead-eyebrow { opacity: 0.45; }
.site-header.is-compact .nav-row { padding-bottom: 0.32rem; }
.site-header.is-compact .nav-link { padding-top: 0.42rem; padding-bottom: 0.36rem; }

/* 进度条 */
.progress-track {
  height: 3px;
  background: rgba(217, 164, 65, 0.16);
  overflow: hidden;
}

.progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--gold) 0%, var(--orange) 100%);
}

/* ---------- 9. 右侧快捷索引 ---------- */
.side-index {
  position: fixed;
  right: clamp(0.6rem, 1.6vw, 1.4rem);
  top: 50%;
  transform: translateY(-50%);
  z-index: 70;
  padding: 0.5rem 0.35rem;
  background: rgba(17, 20, 23, 0.86);
  border: 1.5px solid var(--line-gold);
  border-radius: 3px;
  box-shadow: 4px 4px 0 0 rgba(0, 0, 0, 0.35);
}

.side-index-list {
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
}

.side-index-link {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.32rem 0.42rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(247, 241, 230, 0.58);
  text-decoration: none;
  border-radius: 2px;
  white-space: nowrap;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.side-index-mark {
  width: 0.36rem;
  height: 0.36rem;
  border-radius: 50%;
  background: rgba(247, 241, 230, 0.28);
  flex: none;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.side-index-link:hover {
  color: var(--gold-light);
  background: rgba(217, 164, 65, 0.12);
}

.side-index-link[data-active] {
  color: var(--gold-light);
  background: rgba(217, 164, 65, 0.16);
}

.side-index-link[data-active] .side-index-mark {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(240, 90, 40, 0.18);
}

@media (max-width: 1240px) {
  .side-index { display: none; }
}

/* ---------- 10. 页脚 · 竞技场底座 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background-color: var(--green-deep);
  background-image:
    linear-gradient(90deg, rgba(217, 164, 65, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(217, 164, 65, 0.055) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px;
  border-top: 3px solid var(--gold);
}

.footer-watermark {
  position: absolute;
  right: 0;
  bottom: -0.16em;
  z-index: 0;
  font-family: var(--font-display);
  font-size: clamp(5rem, 19vw, 15rem);
  font-weight: 900;
  line-height: 0.72;
  letter-spacing: -0.045em;
  color: rgba(217, 164, 65, 0.07);
  -webkit-text-stroke: 1px rgba(217, 164, 65, 0.16);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}

.footer-shell {
  position: relative;
  z-index: 1;
  padding: clamp(2rem, 5vw, 3.6rem) var(--gutter) clamp(1.6rem, 3vw, 2.4rem);
}

.footer-crown {
  padding-bottom: clamp(1.2rem, 3vw, 2rem);
  border-bottom: 2px solid var(--line-gold);
}

.footer-kicker {
  font-family: var(--font-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-statement {
  margin-top: 0.7rem;
  max-width: 26ch;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.1vw, 2.3rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.85fr 1.15fr 0.9fr;
  gap: clamp(1.2rem, 3vw, 2.6rem);
  padding-block: clamp(1.6rem, 3.5vw, 2.6rem);
}

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

.footer-wordmark {
  display: inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 900;
  letter-spacing: 0.14em;
  color: var(--gold);
  text-decoration: none;
  text-shadow: 0 2px 0 rgba(169, 116, 30, 0.5);
}

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

.footer-note {
  margin-top: 0.75rem;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(247, 241, 230, 0.66);
  max-width: 34ch;
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
  font-family: var(--font-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.footer-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line-gold-soft);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.42rem;
}

.footer-link {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: rgba(247, 241, 230, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.footer-list-contact { gap: 0.7rem; }

.footer-list-contact li {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}

.footer-label {
  font-family: var(--font-accent);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
}

.footer-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: rgba(247, 241, 230, 0.86);
  word-break: break-word;
}

.footer-badge {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.24rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-light);
  border: 1.5px solid var(--line-gold);
  border-radius: 2px;
}

.footer-base {
  position: relative;
  z-index: 1;
  border-top: 2px solid var(--line-gold);
  background: rgba(17, 20, 23, 0.45);
}

.footer-base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.6rem;
  padding: 0.95rem var(--gutter);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: rgba(247, 241, 230, 0.58);
}

.footer-legal,
.footer-icp,
.footer-domain { margin: 0; }

.footer-icp,
.footer-domain { font-family: var(--font-mono); letter-spacing: 0.02em; }

/* ---------- 11. 通用组件 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.breadcrumbs-sep {
  color: var(--gold-deep);
  font-weight: 800;
}

.section--dark .breadcrumbs { color: rgba(247, 241, 230, 0.62); }
.section--dark .breadcrumbs a:hover { color: var(--gold-light); }

.panel {
  position: relative;
  padding: clamp(1.1rem, 3vw, 1.9rem);
  background: var(--graphite);
  color: var(--paper);
  border: 2px solid var(--green);
  border-radius: 3px;
  box-shadow: var(--shadow-hard);
}

.panel--gold { border-color: var(--gold); }

.panel .h-section { color: var(--gold-light); }
.panel .body-text,
.panel .lede { color: rgba(247, 241, 230, 0.78); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.55rem;
  font-family: var(--font-accent);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.5;
  color: var(--gold-deep);
  border: 1.5px solid currentColor;
  border-radius: 2px;
  background: transparent;
}

.tag--solid {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold-deep);
}

.tag--alert {
  color: var(--paper);
  background: var(--orange);
  border-color: #A8381A;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 1.8rem);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* 图片占位容器：页面阶段放入 <img> 即可 */
.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 2px solid var(--green);
  border-radius: 3px;
  background: linear-gradient(135deg, var(--green-deep) 0%, var(--ink) 100%);
  box-shadow: var(--shadow-hard);
}

.media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(217, 164, 65, 0.22);
  pointer-events: none;
}

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

.media-frame--slanted {
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

.media-caption {
  margin-top: 0.6rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--gray);
  letter-spacing: 0.03em;
}

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

html[data-reveal-ready] [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

html[data-reveal-ready] [data-reveal="shown"] {
  opacity: 1;
  transform: none;
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1024px) {
  .chip-link { display: none; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:nth-child(4) { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .site-header { position: sticky; }

  .masthead {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "eyebrow meta"
      "brand brand";
    row-gap: 0.2rem;
    padding-top: 0.5rem;
    padding-bottom: 0.45rem;
    column-gap: 0.6rem;
  }

  .masthead-eyebrow { grid-area: eyebrow; }
  .wordmark {
    grid-area: brand;
    justify-self: center;
    font-size: clamp(1.45rem, 6.4vw, 2rem);
  }
  .masthead-meta { grid-area: meta; }

  .nav-row { flex-wrap: wrap; padding-bottom: 0.5rem; }

  .nav-toggle {
    display: inline-flex;
    order: 1;
  }

  .nav-actions {
    order: 2;
    margin-left: auto;
  }

  .nav-actions .btn { box-shadow: 2px 2px 0 0 rgba(0, 0, 0, 0.5); }

  .site-nav {
    order: 3;
    flex: 1 0 100%;
    display: grid;
    grid-template-rows: 0fr;
    justify-content: stretch;
    transition: grid-template-rows 0.35s ease;
  }

  .site-nav > .nav-list {
    overflow: hidden;
    min-height: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
  }

  .site-nav[data-open] { grid-template-rows: 1fr; }

  .site-nav[data-open] > .nav-list {
    padding-block: 0.35rem 0.5rem;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(247, 241, 230, 0.09);
  }

  .nav-item:last-child { border-bottom: 0; }

  .nav-link {
    display: block;
    width: 100%;
    padding: 0.82rem 0.4rem;
    font-size: 0.98rem;
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    background: rgba(217, 164, 65, 0.12);
    box-shadow: inset 3px 0 0 0 var(--orange);
  }

  .section { padding-block: clamp(2rem, 7vw, 3.5rem); }
}

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col-brand { grid-column: 1 / -1; }
  .footer-col:nth-child(4) { grid-column: auto; }
}

@media (max-width: 680px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 560px) {
  :root { --gutter: 1rem; }

  .refresh-pill {
    font-size: 0.62rem;
    padding: 0.2rem 0.52rem;
    letter-spacing: 0.02em;
  }

  .nav-actions .btn-ghost { display: none; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col-brand { grid-column: auto; }

  .footer-base-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .btn { font-size: 0.84rem; }
}

/* ---------- 13. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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

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