/* ==========================================================================
   2025 中国龙银币 · 高端暗金主题
   ========================================================================== */

:root {
  --bg: #0c0a07;
  --bg-soft: #12100b;
  --bg-card: #17130d;
  --bg-card-2: #1d1810;
  --line: rgba(201, 166, 92, 0.22);
  --line-strong: rgba(214, 178, 102, 0.55);
  --gold: #c9a65c;
  --gold-bright: #ecd28f;
  --gold-deep: #8a6d33;
  --text: #e9e2d0;
  --text-muted: #a99e85;
  --text-dim: #7d7460;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --container: 1200px;
  --pad-x: 32px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.gold-text {
  background: linear-gradient(135deg, #f6e7b4 0%, #d9b866 38%, #b8893f 62%, #f0d98f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--gold-bright);
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(12, 10, 7, 0.88);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.header-inner {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-seal {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 24px;
  color: #1a1408;
  background: linear-gradient(150deg, #f3e2a8, #c9a65c 55%, #9a7734);
  border-radius: 6px;
  box-shadow: 0 4px 18px rgba(201, 166, 92, 0.35), inset 0 0 0 1px rgba(255, 240, 200, 0.5);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-family: var(--serif); font-size: 19px; letter-spacing: 4px; color: var(--gold-bright); }
.brand-text em { font-style: normal; font-size: 10px; letter-spacing: 2.5px; color: var(--text-dim); }

.site-nav { display: flex; gap: 38px; }
.site-nav a {
  position: relative;
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--text-muted);
  padding: 6px 0;
  transition: color 0.3s;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--ease), left 0.3s var(--ease);
}
.site-nav a:hover, .site-nav a.active { color: var(--gold-bright); }
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; left: 0; }

/* 语言切换器（下拉） */
.lang-switch {
  position: relative;
  margin-left: 18px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  z-index: 100010;           /* 高于水印(9999)，确保可点可见 */
}
.lang-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 5px 10px;
  border-radius: 4px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.25s;
}
.lang-trigger:hover { color: var(--gold-bright); border-color: var(--line); background: rgba(201,166,92,0.06); }
.lang-current { font-weight: 600; color: var(--gold-bright); }
.lang-arrow {
  font-size: 10px;
  color: var(--text-dim);
  transition: transform 0.25s;
}
.lang-switch.open .lang-arrow { transform: rotate(180deg); color: var(--gold-bright); }
.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 150px;
  background: var(--bg-card-2);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 6px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.25s;
  z-index: 100011;            /* 高于水印(9999)，确保下拉在最上层 */
}
.lang-switch.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.lang-dropdown a {
  display: block;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 4px;
  transition: all 0.2s;
  white-space: nowrap;
}
.lang-dropdown a:hover { color: var(--gold-bright); background: rgba(201,166,92,0.1); }
.lang-dropdown a.active {
  color: #1a1408;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  font-weight: 600;
}

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  animation: heroZoom 12s var(--ease) forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero-mask {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(12, 10, 7, 0.35) 0%, rgba(12, 10, 7, 0.82) 70%, rgba(12, 10, 7, 0.96) 100%),
    linear-gradient(to bottom, rgba(12,10,7,0.75) 0%, rgba(12,10,7,0.25) 40%, rgba(12,10,7,0.9) 100%);
}
.hero-vertical {
  position: absolute;
  right: calc((100vw - var(--container)) / 2 - 90px);
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 12px;
  color: rgba(236, 210, 143, 0.55);
  border-right: 1px solid var(--line);
  padding-right: 18px;
}
.hero-content { position: relative; padding-top: 76px; }
.hero-tag {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--gold-bright);
  border: 1px solid var(--line-strong);
  padding: 8px 22px;
  border-radius: 2px;
  background: rgba(20, 16, 9, 0.5);
  margin-bottom: 34px;
}
.hero-title { font-family: var(--serif); font-weight: 700; }
.hero-title span {
  font-size: clamp(44px, 7vw, 88px);
  letter-spacing: 10px;
  text-shadow: 0 4px 40px rgba(0, 0, 0, 0.6);
}
.hero-sub {
  margin-top: 28px;
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--text-muted);
  letter-spacing: 1.5px;
}
.hero-stats {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 960px;
}
.hero-stat {
  border-left: 1px solid var(--line);
  padding-left: 20px;
}
.hero-stat strong {
  display: block;
  font-family: var(--serif);
  font-size: 48px;
  line-height: 1.2;
  color: var(--gold-bright);
  font-weight: 700;
  text-shadow: 0 2px 16px rgba(0,0,0,0.6);
}
.hero-stat strong .unit { font-size: 20px; margin-left: 6px; color: var(--gold); letter-spacing: 2px; }
.hero-stat span { font-size: 16px; color: var(--text-muted); letter-spacing: 1px; font-weight: 500; }
.hero-stat-wide strong { font-size: 38px; letter-spacing: 2px; }

.scroll-hint {
  position: absolute;
  left: 50%; bottom: 34px;
  transform: translateX(-50%);
  width: 26px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  display: flex; justify-content: center;
}
.scroll-hint span {
  width: 3px; height: 8px;
  margin-top: 9px;
  background: var(--gold);
  border-radius: 2px;
  animation: scrollDot 1.8s infinite;
}
@keyframes scrollDot {
  0% { opacity: 0; transform: translateY(-4px); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ---------- 通用区块 ---------- */
.section { position: relative; padding: 110px 0; }
.section-dark { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.section-head { text-align: center; margin-bottom: 70px; }
.section-en {
  font-size: 12px;
  letter-spacing: 8px;
  color: var(--gold-deep);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(30px, 3.6vw, 42px);
  font-weight: 700;
  letter-spacing: 8px;
  color: var(--gold-bright);
}
.section-line {
  display: block;
  width: 70px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 22px auto 0;
  position: relative;
}
.section-line::before {
  content: "◆";
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  font-size: 8px;
  color: var(--gold);
  background: var(--bg);
  padding: 0 8px;
}
.section-dark .section-line::before { background: var(--bg-soft); }
.section-desc { margin-top: 26px; color: var(--text-muted); font-size: 15.5px; letter-spacing: 1px; }

.sub-title {
  text-align: center;
  margin: 80px 0 44px;
  font-family: var(--serif);
}
.sub-title span {
  display: inline-block;
  font-size: 24px;
  letter-spacing: 6px;
  color: var(--gold-bright);
  position: relative;
  padding: 0 30px;
}
.sub-title span::before, .sub-title span::after {
  content: "";
  position: absolute; top: 50%;
  width: 46px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-deep));
}
.sub-title span::before { right: 100%; background: linear-gradient(90deg, transparent, var(--gold-deep)); }
.sub-title span::after { left: 100%; background: linear-gradient(90deg, var(--gold-deep), transparent); }
.sub-title em {
  display: block;
  margin-top: 12px;
  font-style: normal;
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--text-dim);
  letter-spacing: 2px;
}

/* ---------- 概述 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 70px;
  align-items: center;
}
.about-text .lead {
  font-family: var(--serif);
  font-size: 21px;
  line-height: 2;
  color: var(--text);
  margin-bottom: 24px;
}
.about-text .lead em { font-style: normal; color: var(--gold-bright); }
.about-text p { color: var(--text-muted); margin-bottom: 18px; letter-spacing: 0.5px; }
.about-text strong { color: var(--gold-bright); font-weight: 600; }
.about-points { margin-top: 34px; display: grid; gap: 18px; }
.about-points li {
  display: flex; align-items: center; gap: 18px;
  padding: 16px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(201,166,92,0.06), transparent 60%);
  border-radius: 4px;
}
.about-points i {
  font-style: normal;
  font-family: var(--serif);
  font-size: 20px;
  color: var(--gold);
  border: 1px solid var(--line-strong);
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 50%;
  flex-shrink: 0;
}
.about-points div { display: flex; flex-direction: column; }
.about-points strong { font-family: var(--serif); font-size: 17px; letter-spacing: 2px; }
.about-points span { font-size: 13px; color: var(--text-dim); letter-spacing: 1px; }

.about-coins { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.coin-card {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: transform 0.5s var(--ease), border-color 0.5s;
}
.coin-card:hover { transform: translateY(-6px); border-color: var(--line-strong); }
.coin-card img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
.coin-card figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 30px 16px 14px;
  background: linear-gradient(to top, rgba(8, 6, 3, 0.92), transparent);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
}
.coin-card figcaption b {
  display: inline-block;
  font-family: var(--serif);
  font-size: 16px;
  color: var(--gold-bright);
  margin-right: 10px;
  letter-spacing: 3px;
}

/* ---------- 四大品种 ---------- */
.variety-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.variety-card {
  position: relative;
  padding: 40px 38px 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(160deg, var(--bg-card-2), var(--bg-card) 70%);
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
  overflow: hidden;
}
.variety-card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px 200px at 20% 0%, rgba(201,166,92,0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.45s;
}
.variety-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: 0 20px 50px rgba(0,0,0,0.45); }
.variety-card:hover::before { opacity: 1; }
.variety-no {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--gold-deep);
  letter-spacing: 3px;
}
.variety-card h3 {
  font-family: var(--serif);
  font-size: 26px;
  letter-spacing: 5px;
  color: var(--gold-bright);
  margin: 12px 0 18px;
}
.variety-card h3 small { font-size: 15px; color: var(--text-dim); letter-spacing: 2px; }
.variety-card p { color: var(--text-muted); font-size: 15px; }
.variety-card p strong, .variety-card li strong { color: var(--text); font-weight: 600; }
.variety-img {
  margin: 18px 0 20px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-card-2);
}
.variety-img img {
  display: block;
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center 30%;
  transition: transform 0.6s var(--ease);
}
.variety-card:hover .variety-img img { transform: scale(1.06); }

/* 封装龙特色卡：左文右图布局 */
.variety-featured .variety-body {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}
.variety-featured .variety-text { flex: 1; min-width: 0; }
.variety-featured .variety-img {
  flex: 0 0 280px;
  margin: 0;
  border-radius: 4px;
}
.variety-featured .variety-img img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top center;
  background: #fff;
}
@media (max-width: 640px) {
  .variety-featured .variety-body {
    flex-direction: column;
    gap: 20px;
  }
  .variety-featured .variety-img { flex: 0 0 auto; align-self: center; }
}
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.tag-list li {
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--gold);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 4px 14px;
  background: rgba(201,166,92,0.07);
}
.feature-list { margin-top: 18px; display: grid; gap: 12px; }
.feature-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--text-muted);
}
.feature-list li::before {
  content: "❖";
  position: absolute; left: 0; top: 0;
  color: var(--gold);
  font-size: 12px;
}
.variety-featured {
  grid-column: span 2;
  border-color: var(--line-strong);
  background:
    linear-gradient(160deg, rgba(201,166,92,0.12), rgba(23,19,13,0.6) 55%),
    var(--bg-card);
}
.variety-badge {
  position: absolute;
  top: 0; right: 38px;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  color: #1a1408;
  font-size: 13px;
  letter-spacing: 3px;
  padding: 7px 18px;
  border-radius: 0 0 4px 4px;
  font-weight: 600;
}

/* ---------- 获奖殊荣 ---------- */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
  max-width: 1040px;
  margin: 0 auto;
}
.award-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(170deg, rgba(201,166,92,0.1), rgba(23,19,13,0.6) 55%), var(--bg-card);
  transition: transform 0.5s var(--ease), box-shadow 0.5s;
}
.award-card:hover { transform: translateY(-8px); box-shadow: 0 26px 60px rgba(0,0,0,0.55); }
.award-img {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #0a0805;
}
.award-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.award-card:hover .award-img img { transform: scale(1.05); }
.award-body { padding: 30px 32px 34px; }
.award-rank {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 3px;
  color: #1a1408;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  padding: 5px 16px;
  border-radius: 2px;
  font-weight: 600;
  margin-bottom: 18px;
}
.award-body h3 {
  font-family: var(--serif);
  font-size: 28px;
  letter-spacing: 5px;
  color: var(--gold-bright);
  margin-bottom: 6px;
}
.award-en {
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.award-desc { font-size: 14.5px; color: var(--text-muted); line-height: 1.95; }
.award-desc strong { color: var(--gold-bright); font-weight: 600; }
.awards-note {
  text-align: center;
  max-width: 760px;
  margin: 48px auto 0;
  padding: 22px 30px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 1px;
  line-height: 2;
}
.awards-note-mark { color: var(--gold); margin: 0 10px; }

/* ---------- 银尾版别 ---------- */
.variant-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.variant-card {
  position: relative;
  text-align: center;
  padding: 22px 20px 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(170deg, var(--bg-card-2), var(--bg-card));
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.variant-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: 0 18px 44px rgba(0,0,0,0.45); }
.variant-img {
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  background: #0a0805;
  aspect-ratio: 4 / 3;
}
.variant-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--ease);
}
.variant-card:hover .variant-img img { transform: scale(1.06); }
.variant-card h3 { font-family: var(--serif); font-size: 20px; letter-spacing: 5px; color: var(--gold-bright); margin-bottom: 12px; }
.variant-card p { color: var(--text-muted); font-size: 13.5px; line-height: 1.8; }
.variant-card p strong { color: var(--text); font-weight: 600; }
.variant-card-top {
  border-color: var(--line-strong);
  background:
    radial-gradient(380px 180px at 50% 0%, rgba(236,210,143,0.12), transparent 70%),
    linear-gradient(170deg, #241d10, var(--bg-card));
}
.variant-card-top h3 { color: #f6e7b4; }
.variant-note {
  text-align: center;
  margin: 40px auto 0;
  max-width: 760px;
  color: var(--text-dim);
  font-size: 14.5px;
  letter-spacing: 1px;
  padding-top: 30px;
  border-top: 1px dashed var(--line);
}

/* ---------- NGC 评级 ---------- */
.grade-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: start;
}
.grade-score {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 26px;
}
.grade-score strong {
  font-family: var(--serif);
  font-size: 88px;
  line-height: 1;
  font-weight: 700;
}
.grade-score span { font-size: 15px; color: var(--text-dim); letter-spacing: 4px; }
.grade-intro p { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.grade-intro strong { color: var(--gold-bright); }
.grade-labels { display: grid; gap: 12px; margin: 26px 0; }
.grade-labels div {
  display: flex; align-items: center; justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 12px 20px;
  background: rgba(201,166,92,0.05);
}
.grade-labels b { font-family: var(--serif); color: var(--gold-bright); letter-spacing: 3px; font-size: 16px; }
.grade-labels span { font-size: 13px; color: var(--text-dim); letter-spacing: 1px; }
.grade-tip { font-size: 13.5px !important; color: var(--text-dim) !important; }

.grade-bars {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 38px 36px;
  background: linear-gradient(160deg, rgba(201,166,92,0.07), transparent 60%), var(--bg-card);
}
.bars-title { font-family: var(--serif); font-size: 19px; letter-spacing: 4px; color: var(--gold-bright); margin-bottom: 32px; text-align: center; }
.bar-row { margin-bottom: 26px; }
.bar-meta { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.bar-meta b { font-size: 14.5px; letter-spacing: 2px; color: var(--text); }
.bar-meta span { font-size: 13px; color: var(--gold); font-variant-numeric: tabular-nums; }
.bar-track { height: 10px; background: rgba(201,166,92,0.1); border-radius: 5px; overflow: hidden; }
.bar-fill {
  height: 100%;
  width: 0;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold) 60%, var(--gold-bright));
  box-shadow: 0 0 14px rgba(201,166,92,0.4);
  transition: width 1.4s var(--ease);
}
.bars-note { text-align: right; font-size: 12.5px; color: var(--text-dim); margin-top: 18px; letter-spacing: 1px; }

/* ---------- 号码玩法 ---------- */
.numbers-section { overflow: hidden; }
.numbers-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.16;
  filter: saturate(0.6);
}
.numbers-section .container { position: relative; }

.digit-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.digit-card {
  text-align: center;
  padding: 28px 18px 24px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 15, 10, 0.72);
  backdrop-filter: blur(4px);
  transition: transform 0.4s var(--ease), border-color 0.4s, background 0.4s;
}
.digit-card:hover { transform: translateY(-5px); border-color: var(--line-strong); background: rgba(30, 24, 14, 0.9); }
.digit-card b {
  font-family: var(--serif);
  font-size: 44px;
  line-height: 1;
  display: block;
  margin-bottom: 14px;
}
.digit-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; letter-spacing: 0.5px; }

.special-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.special-card {
  padding: 40px 42px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: linear-gradient(150deg, rgba(201,166,92,0.1), transparent 55%), var(--bg-card);
  text-align: center;
}
.special-card h3 { font-family: var(--serif); font-size: 26px; letter-spacing: 8px; color: var(--gold-bright); margin-bottom: 18px; }
.special-nums {
  font-family: var(--serif);
  font-size: 30px;
  letter-spacing: 10px;
  color: var(--gold);
  margin-bottom: 22px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.special-card p { color: var(--text-muted); font-size: 14.5px; text-align: left; }
.special-card strong { color: var(--gold-bright); }

.layer-bars { max-width: 860px; margin: 0 auto; display: grid; gap: 18px; }
.layer-row { display: grid; grid-template-columns: 170px 1fr; gap: 24px; align-items: center; }
.layer-meta b { display: block; font-family: var(--serif); font-size: 18px; letter-spacing: 3px; color: var(--gold-bright); text-align: right; }
.layer-meta span { display: block; font-size: 12px; color: var(--text-dim); text-align: right; letter-spacing: 1px; }
.layer-track { height: 42px; background: rgba(201,166,92,0.07); border: 1px solid var(--line); border-radius: 4px; overflow: hidden; display: flex; align-items: center; }
.layer-fill {
  height: 100%;
  width: 0;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, rgba(138,109,51,0.55), rgba(201,166,92,0.85));
  border-right: 1px solid var(--gold-bright);
  transition: width 1.4s var(--ease);
  white-space: nowrap;
}
.layer-fill em {
  font-style: normal;
  font-size: 13px;
  color: #f5ead0;
  padding-left: 16px;
  letter-spacing: 1px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.layer-sum { text-align: center; margin-top: 30px; color: var(--text-dim); font-size: 14px; letter-spacing: 2px; }

.advance-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  max-width: 960px;
  margin: 0 auto;
}
.advance-card {
  position: relative;
  padding: 42px 40px 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(165deg, var(--bg-card-2), var(--bg-card) 70%);
}
.advance-card h3 { font-family: var(--serif); font-size: 26px; letter-spacing: 6px; color: var(--gold-bright); margin-bottom: 16px; }
.advance-card p { color: var(--text-muted); font-size: 14.5px; }
.advance-card strong { color: var(--text); }
.advance-stat {
  display: flex; align-items: baseline; gap: 14px;
  margin: 24px 0 18px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.advance-stat strong { font-family: var(--serif); font-size: 34px; color: var(--gold-bright); }
.advance-stat span { font-size: 14px; color: var(--gold); letter-spacing: 2px; }
.advance-detail { font-size: 13px !important; color: var(--text-dim) !important; line-height: 1.9; }
.advance-card-top {
  border-color: var(--line-strong);
  background: linear-gradient(165deg, rgba(201,166,92,0.14), rgba(23,19,13,0.7) 60%), var(--bg-card);
}
.advance-crown {
  position: absolute;
  top: -13px; left: 36px;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  color: #1a1408;
  font-size: 12.5px;
  letter-spacing: 3px;
  padding: 4px 16px;
  border-radius: 3px;
  font-weight: 600;
}

.hall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.hall-card {
  position: relative;
  padding: 36px 30px 30px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(170deg, var(--bg-card-2), var(--bg-card));
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.hall-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: 0 18px 44px rgba(0,0,0,0.45); }
.hall-card h3 { font-family: var(--serif); font-size: 23px; letter-spacing: 5px; color: var(--gold-bright); margin-bottom: 10px; }
.hall-example {
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 3px;
  color: var(--gold);
  margin-bottom: 16px;
}
.hall-card p { font-size: 13.5px; color: var(--text-muted); line-height: 1.8; min-height: 76px; }
.hall-count {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.hall-count strong { font-family: var(--serif); font-size: 21px; color: var(--gold-bright); }
.hall-count span { font-size: 13px; color: var(--gold); }
.hall-card-king {
  border-color: var(--gold);
  background:
    radial-gradient(500px 240px at 50% 0%, rgba(236,210,143,0.14), transparent 70%),
    linear-gradient(170deg, #241d10, #17130d);
  box-shadow: 0 0 0 1px rgba(201,166,92,0.25), 0 18px 50px rgba(0,0,0,0.5);
}
.hall-rank {
  position: absolute;
  top: -13px; left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  color: #1a1408;
  font-size: 12.5px;
  letter-spacing: 3px;
  padding: 4px 18px;
  border-radius: 3px;
  font-weight: 600;
}
.hall-note {
  margin: 40px auto 0;
  max-width: 880px;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
  line-height: 2;
  letter-spacing: 0.5px;
}

.fun-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}
.fun-card {
  padding: 30px 22px 26px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 15, 10, 0.72);
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.fun-card:hover { transform: translateY(-5px); border-color: var(--line-strong); }
.fun-card h3 { font-family: var(--serif); font-size: 18px; letter-spacing: 3px; color: var(--gold-bright); margin-bottom: 14px; line-height: 1.5; }
.fun-card h3 small { font-size: 12px; color: var(--text-dim); letter-spacing: 1px; }
.fun-nums {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 1px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 14px;
  text-align: center;
}
.fun-card p { font-size: 12.5px; color: var(--text-muted); line-height: 1.8; }

/* ---------- 结语 ---------- */
.epilogue { padding: 120px 0; }
.epilogue-card {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(160deg, rgba(201,166,92,0.08), transparent 55%), var(--bg-card);
}
.epilogue-card img { width: 100%; height: 100%; object-fit: cover; min-height: 420px; }
.epilogue-text { padding: 56px 56px 56px 0; }
.epilogue-en { font-size: 12px; letter-spacing: 8px; color: var(--gold-deep); margin-bottom: 12px; }
.epilogue-text h2 { font-family: var(--serif); font-size: 34px; letter-spacing: 8px; color: var(--gold-bright); margin-bottom: 26px; }
.epilogue-quote {
  font-family: var(--serif);
  font-size: 21px;
  color: var(--gold-bright);
  letter-spacing: 3px;
  margin-bottom: 24px;
  padding-left: 18px;
  border-left: 2px solid var(--gold);
}
.epilogue-text p { color: var(--text-muted); font-size: 15px; margin-bottom: 16px; }
.epilogue-text strong { color: var(--text); font-weight: 600; }
.epilogue-wish {
  margin-top: 28px;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2.1;
  color: var(--text) !important;
  letter-spacing: 2px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 44px;
  text-align: center;
  background: var(--bg-soft);
}
.site-footer .brand-seal { margin: 0 auto 20px; }
.site-footer p { font-size: 13.5px; color: var(--text-muted); letter-spacing: 2px; }
.footer-note { margin-top: 10px; font-size: 12px !important; color: var(--text-dim) !important; letter-spacing: 1px !important; }

/* ---------- 滚动显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-vertical { display: none; }
  .digit-grid { grid-template-columns: repeat(3, 1fr); }
  .fun-grid { grid-template-columns: repeat(3, 1fr); }
  .hall-grid { grid-template-columns: repeat(2, 1fr); }
  .variant-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  :root { --pad-x: 22px; }
  .section { padding: 80px 0; }
  .site-nav { gap: 20px; }
  .site-nav a { font-size: 13px; letter-spacing: 1px; }
  .brand-text em { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-coins { max-width: 560px; margin: 0 auto; }
  .variety-grid { grid-template-columns: 1fr; }
  .variety-featured { grid-column: auto; }
  .variant-grid { grid-template-columns: repeat(2, 1fr); max-width: 560px; margin: 0 auto; }
  .grade-grid { grid-template-columns: 1fr; gap: 44px; }
  .special-grid, .advance-grid { grid-template-columns: 1fr; }
  .awards-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .layer-row { grid-template-columns: 130px 1fr; gap: 14px; }
  .hall-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .hall-card p { min-height: 0; }
  .digit-grid { grid-template-columns: repeat(2, 1fr); }
  .fun-grid { grid-template-columns: 1fr 1fr; }
  .epilogue-card { grid-template-columns: 1fr; }
  .epilogue-card img { min-height: 280px; }
  .epilogue-text { padding: 40px 32px 48px; }
}

@media (max-width: 560px) {
  .header-inner { height: 64px; }
  .brand-seal { width: 38px; height: 38px; font-size: 20px; }
  .brand-text strong { font-size: 16px; letter-spacing: 2px; }
  .site-nav { display: none; }
  .hero-title span { letter-spacing: 5px; }
  .hero-stat strong { font-size: 34px; }
  .hero-stat-wide strong { font-size: 26px; }
  .digit-grid, .fun-grid { grid-template-columns: 1fr; }
  .variant-grid { grid-template-columns: 1fr; max-width: 420px; }
  .layer-row { grid-template-columns: 1fr; gap: 6px; }
  .layer-meta b, .layer-meta span { text-align: left; }
  .grade-bars { padding: 28px 20px; }
  .variety-card, .special-card, .advance-card { padding: 32px 26px; }
}

/* ==========================================================================
   全屏防盗水印 · 小颖直播间
   ========================================================================== */
.watermark {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  pointer-events: none;        /* 不阻挡任何点击/滚动 */
  user-select: none;
  -webkit-user-select: none;
  z-index: 9999;               /* 盖在所有内容之上，截图可见 */
}
.watermark-inner {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  transform: rotate(-22deg);
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='340' height='210'%3E%3Ctext x='170' y='118' font-size='26' font-family='PingFang SC, Microsoft YaHei, Noto Sans SC, sans-serif' fill='%23f6e7b4' text-anchor='middle' opacity='1'%3E%E5%B0%8F%E9%A2%96%E7%9B%B4%E6%92%AD%E9%97%B4%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
  opacity: 0.3;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.55));
}

/* 打印时也保留水印 */
@media print {
  .watermark { position: absolute; }
}

/* ---------- 联系我们 ---------- */
.contact-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 48px 52px;
  background: linear-gradient(150deg, rgba(201,166,92,0.08), transparent 55%), var(--bg-card);
}
.contact-text p {
  color: var(--text-muted);
  font-size: 15.5px;
  line-height: 2;
  margin-bottom: 16px;
}
.contact-text b { color: var(--gold-bright); font-weight: 600; }
.contact-thanks {
  margin-top: 24px !important;
  font-family: var(--serif);
  font-size: 17px !important;
  letter-spacing: 2px;
  color: var(--gold) !important;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}
.contact-qrs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.qr-card {
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px 18px 22px;
  background: linear-gradient(170deg, var(--bg-card-2), var(--bg-card));
  transition: transform 0.4s var(--ease), border-color 0.4s;
}
.qr-card:hover { transform: translateY(-5px); border-color: var(--line-strong); }
.qr-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 4px;
  background: #fff;
  margin-bottom: 16px;
}
.qr-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.qr-card figcaption b {
  display: block;
  font-family: var(--serif);
  font-size: 17px;
  letter-spacing: 3px;
  color: var(--gold-bright);
  margin-bottom: 4px;
}
.qr-card figcaption span {
  font-size: 12.5px;
  color: var(--text-dim);
  letter-spacing: 1px;
}

@media (max-width: 900px) {
  .contact-card { grid-template-columns: 1fr; gap: 36px; padding: 36px 28px; }
  .contact-qrs { max-width: 420px; margin: 0 auto; }
}

/* ==========================================================================
   二级页面 · 通用模块（详情页 / 面包屑 / 数据统计 / CTA）
   ========================================================================== */

/* ---------- 紧凑页头 ---------- */
.page-hero {
  position: relative;
  padding: 168px 0 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center 32%;
  opacity: 0.20;
  filter: saturate(0.65);
}
.page-hero-mask {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(12,10,7,0.82) 0%, rgba(12,10,7,0.55) 48%, var(--bg) 100%);
}
.page-hero .container { position: relative; }

/* 面包屑：置于 .container 内，左缘与页头品牌章、正文内容对齐 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 32px;
}
.breadcrumb a { color: var(--text-muted); transition: color 0.3s; }
.breadcrumb a:hover { color: var(--gold-bright); }
.breadcrumb .sep { color: var(--gold-deep); font-size: 11px; }
.breadcrumb .current { color: var(--gold); }

.page-hero-tag {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--gold-bright);
  border: 1px solid var(--line-strong);
  padding: 7px 20px;
  border-radius: 2px;
  background: rgba(20, 16, 9, 0.5);
  margin-bottom: 28px;
}
.page-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 52px);
  letter-spacing: 8px;
  color: var(--gold-bright);
  text-shadow: 0 4px 30px rgba(0,0,0,0.6);
}
.page-subtitle {
  margin-top: 22px;
  max-width: 780px;
  font-size: clamp(15px, 1.6vw, 17px);
  color: var(--text-muted);
  letter-spacing: 1.5px;
}

/* ---------- 金句引语 ---------- */
.detail-quote {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  padding: 4px 20px 0;
}
.detail-quote blockquote {
  font-family: var(--serif);
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 2.1;
  letter-spacing: 3px;
  color: var(--gold-bright);
}
.detail-quote blockquote::before { content: "「"; color: var(--gold-deep); }
.detail-quote blockquote::after { content: "」"; color: var(--gold-deep); }
.detail-quote p {
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 15px;
  letter-spacing: 1px;
}

/* ---------- 详情图文（复用 about-grid 布局） ---------- */
.detail-figure {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-card);
  transition: border-color 0.45s;
}
.detail-figure:hover { border-color: var(--line-strong); }
.detail-figure img { width: 100%; display: block; }
.detail-figure figcaption {
  padding: 14px 20px;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 1px;
  border-top: 1px solid var(--line);
  text-align: center;
  line-height: 1.8;
}
.detail-figure figcaption b { color: var(--gold); font-weight: 600; }

/* ---------- 数据统计卡 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 64px;
}
.stat-card {
  position: relative;
  text-align: center;
  padding: 34px 22px 30px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: linear-gradient(170deg, var(--bg-card-2), var(--bg-card));
  transition: transform 0.45s var(--ease), border-color 0.45s, box-shadow 0.45s;
}
.stat-card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: 0 18px 44px rgba(0,0,0,0.45); }
.stat-card strong {
  display: block;
  font-family: var(--serif);
  font-size: 78px;
  line-height: 1.1;
  font-weight: 700;
  color: var(--gold-bright);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  text-shadow: 0 0 20px rgba(236,210,143,0.38), 0 2px 6px rgba(0,0,0,0.5);
}
.stat-card strong .unit { font-size: 20px; margin-left: 6px; color: var(--gold); letter-spacing: 2px; font-weight: 400; vertical-align: 0.25em; opacity: 0.8; }
.stat-card span {
  display: block;
  margin-top: 14px;
  font-size: 15.5px;
  color: var(--text-muted);
  letter-spacing: 2px;
}
.stat-card em {
  display: block;
  margin-top: 8px;
  font-style: normal;
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 1.5px;
}
.stat-card-top strong {
  font-size: 104px;
  background: linear-gradient(180deg, #f7e7b0 0%, #e8c76a 55%, #b88a32 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 24px rgba(232,199,106,0.45));
}
.stat-card-top {
  border-color: var(--line-strong);
  background:
    radial-gradient(380px 200px at 50% 0%, rgba(236,210,143,0.12), transparent 70%),
    linear-gradient(170deg, #241d10, var(--bg-card));
}

/* 分布数据条（复用 .bar-row / .bar-track / .bar-fill） */
.dist-bars {
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 38px 36px;
  background: linear-gradient(160deg, rgba(201,166,92,0.07), transparent 60%), var(--bg-card);
}
.dist-note { text-align: center; font-size: 12.5px; color: var(--text-dim); margin-top: 26px; letter-spacing: 1px; }

/* ---------- 主页「了解更多」入口 ---------- */
.variant-more { text-align: center; margin-top: 34px; }
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  letter-spacing: 3px;
  color: var(--gold);
  padding: 10px 26px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: rgba(201,166,92,0.06);
  transition: all 0.35s var(--ease);
}
.more-link:hover {
  color: #1a1408;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  border-color: transparent;
  box-shadow: 0 10px 28px rgba(201,166,92,0.3);
}
.more-link strong { font-weight: 600; }
.more-link .more-arrow { transition: transform 0.3s var(--ease); }
.more-link:hover .more-arrow { transform: translateX(5px); }

/* ---------- 详情页收尾卡 + CTA ---------- */
.detail-close {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 56px 56px 50px;
  background:
    radial-gradient(600px 260px at 50% 0%, rgba(236,210,143,0.1), transparent 70%),
    linear-gradient(160deg, rgba(201,166,92,0.08), transparent 55%), var(--bg-card);
}
.detail-close h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: 6px;
  color: var(--gold-bright);
  margin-bottom: 24px;
}
.detail-close p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 2.1;
  letter-spacing: 0.8px;
  max-width: 720px;
  margin: 0 auto 16px;
}
.detail-close p strong { color: var(--gold-bright); font-weight: 600; }
.cta-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 38px;
}
.btn-gold, .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 34px;
  border-radius: 2px;
  font-size: 15px;
  letter-spacing: 3px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.35s var(--ease);
}
.btn-gold {
  color: #1a1408;
  border: 1px solid transparent;
  background: linear-gradient(135deg, #f3e2a8, #c9a65c);
  font-weight: 600;
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,166,92,0.35); }
.btn-ghost {
  color: var(--text-muted);
  border: 1px solid var(--line);
  background: transparent;
}
.btn-ghost:hover { color: var(--gold-bright); border-color: var(--line-strong); transform: translateY(-2px); }

/* ---------- 二级页响应式 ---------- */
@media (max-width: 1080px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .page-hero { padding: 132px 0 60px; }
  .page-title { letter-spacing: 5px; }
  .dist-bars { padding: 30px 24px; }
  .detail-close { padding: 44px 30px 40px; }
}
@media (max-width: 560px) {
  .stat-grid { grid-template-columns: 1fr; }
  .stat-card strong { font-size: 64px; }
  .stat-card-top strong { font-size: 84px; }
  .stat-card strong .unit { font-size: 17px; }
  .breadcrumb { margin-bottom: 24px; }
  .btn-gold, .btn-ghost { padding: 12px 24px; font-size: 14px; letter-spacing: 2px; }
}