/* ============================================================
   /assets/site.css — 非凡体育入口 共享外壳样式
   深墨蓝基座 + 蓝图网格 + 切角面板 + 等宽数字
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

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

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

a { color: inherit; text-decoration: none; }

button, input, select, textarea { font: inherit; color: inherit; }

button { background: none; border: 0; padding: 0; cursor: pointer; }

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

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

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #0B1622;
  --ink-800: #12181D;
  --ink-700: #17293C;
  --steel: #A9B8C6;
  --gray-idx: #7F8F9D;
  --paper: #EDF2F5;
  --cyan: #3FE0C8;
  --orange: #FF6B2C;
  --orange-soft: #FF8A56;
  --track: #0F2A2C;
  --amber: #F2B33D;

  --line: rgba(169, 184, 198, 0.22);
  --line-soft: rgba(169, 184, 198, 0.12);
  --line-cyan: rgba(63, 224, 200, 0.32);

  --shell: 1320px;
  --gutter: 24px;
  --rail-w: 84px;

  --font-display: "Barlow Condensed", "Saira Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --cut: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  --cut-sm: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  --cut-both: polygon(12px 0, 100% 0, calc(100% - 12px) 100%, 0 100%);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. Base & 中文排版 ---------- */
body {
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, rgba(169, 184, 198, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 184, 198, 0.04) 1px, transparent 1px);
  background-size: 88px 100%, 100% 88px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--paper);
}

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

::selection { background: var(--cyan); color: #06131A; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 4. Utilities ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

.u-mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.u-upper { text-transform: uppercase; letter-spacing: 0.08em; }

.stack { display: flex; flex-direction: column; gap: 16px; }
.stack--sm { gap: 8px; }
.stack--lg { gap: 28px; }

.section { padding-block: clamp(32px, 6vw, 72px); }
.section--tight { padding-block: clamp(20px, 3.5vw, 40px); }

.divider-line {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--line), transparent 88%);
  margin-block: clamp(24px, 4vw, 44px);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -70px;
  z-index: 140;
  display: inline-block;
  padding: 10px 18px;
  background: var(--cyan);
  color: #06131A;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  clip-path: var(--cut-both);
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 12px; }

/* ---------- 5. 栅格 & 左轨 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gutter);
}
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

.rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-left: 1px solid var(--line);
  padding-left: 14px;
}
.rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-idx);
}
.rail__item { position: relative; }
.rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--steel);
  transition: color 0.18s var(--ease);
}
.rail__link:hover,
.rail__link[aria-current="page"] { color: var(--cyan); }
.rail__tick {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gray-idx);
  min-width: 26px;
}

/* ---------- 6. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(11, 22, 34, 0.95);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  transition: width 0.12s linear;
}

/* 上层：品牌署名 + 赛季标记 + 辅助入口 */
.header-utility {
  max-height: 84px;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  transition: max-height 0.24s var(--ease), opacity 0.24s var(--ease);
}
.site-header[data-scrolled] .header-utility {
  max-height: 0;
  opacity: 0;
  border-color: transparent;
}
.header-utility__inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 16px 24px;
  padding-block: 9px;
  font-size: 13px;
  color: var(--steel);
}

.brand-sig {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
}
.brand-sig__dot { color: var(--orange); }

.season-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 3px 10px;
  border: 1px solid rgba(242, 179, 61, 0.3);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.season-chip__pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse-ring 2.4s ease-out infinite;
}
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(63, 224, 200, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(63, 224, 200, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 224, 200, 0); }
}

.utility-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}
.utility-nav__link {
  padding: 6px 10px;
  border: 1px solid transparent;
  font-size: 13px;
  color: var(--steel);
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.utility-nav__link:hover {
  color: var(--paper);
  border-color: var(--line);
}
.utility-nav__link[aria-current="page"] { color: var(--cyan); }

/* 中层：品牌标识 + 主栏目 */
.header-main { position: relative; }
.header-main__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 36px);
  padding-block: 12px;
  transition: padding 0.2s var(--ease);
}
.site-header[data-scrolled] .header-main__inner { padding-block: 8px; }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--cyan), var(--orange));
  color: #08131C;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  clip-path: var(--cut-both);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper);
  white-space: nowrap;
}
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-idx);
  white-space: nowrap;
}

.primary-nav { margin-left: auto; }
.primary-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: navidx;
}
.primary-nav__item { counter-increment: navidx; }
.primary-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid transparent;
  font-size: 14.5px;
  color: var(--steel);
  white-space: nowrap;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.primary-nav__link::before {
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--gray-idx);
}
.primary-nav__link:hover {
  color: var(--paper);
  background: var(--ink-700);
  border-color: var(--line);
}
.primary-nav__link[aria-current="page"] {
  color: #06131A;
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}
.primary-nav__link[aria-current="page"]::before { color: rgba(6, 19, 26, 0.6); }

.drawer-meta { display: none; }
.drawer-meta__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-idx);
  margin-bottom: 10px;
}
.drawer-meta__links { display: flex; flex-wrap: wrap; gap: 8px; }
.drawer-meta__link {
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--steel);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.drawer-meta__link:hover { color: var(--cyan); border-color: var(--line-cyan); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.08em;
  clip-path: var(--cut);
}
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.site-header[data-open] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }
.nav-toggle__label { font-family: var(--font-mono); }

/* 下层：快捷入口轨道 */
.quick-rail {
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(15, 42, 44, 0.55), rgba(11, 22, 34, 0));
}
.quick-rail__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-block: 8px;
}
.quick-rail__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-idx);
}
.quick-rail__list {
  display: flex;
  flex: 1 1 auto;
  gap: 8px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: 2px;
}
.quick-rail__list > li { flex: 0 0 auto; scroll-snap-align: start; }
.quick-entry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  background: rgba(18, 24, 29, 0.85);
  color: var(--paper);
  font-size: 13px;
  clip-path: var(--cut-sm);
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.quick-entry:hover {
  color: var(--cyan);
  background: var(--ink-700);
  border-color: var(--line-cyan);
}
.quick-entry__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.quick-entry:hover .quick-entry__idx { color: var(--orange); }
.quick-entry__text { font-weight: 500; white-space: nowrap; }

.quick-rail__cta {
  flex: 0 0 auto;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255, 107, 44, 0.4);
  color: var(--orange);
  font-size: 13px;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.quick-rail__cta:hover { color: var(--orange-soft); border-color: var(--orange-soft); }

/* ---------- 7. Footer ---------- */
.site-footer {
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(15, 42, 44, 0.4), rgba(11, 22, 34, 0.92) 45%),
    var(--ink-900);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, minmax(0, 1fr));
  gap: 32px;
  padding-block: clamp(36px, 6vw, 64px);
}

.footer-brand__mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, var(--cyan), var(--orange));
  color: #08131C;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  clip-path: var(--cut-both);
}
.footer-brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--paper);
}
.footer-brand__note {
  margin-top: 8px;
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--gray-idx);
}

.footer-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer-col__list { display: flex; flex-direction: column; gap: 10px; }
.footer-col__link {
  display: inline-block;
  font-size: 14px;
  color: var(--steel);
  transition: color 0.18s var(--ease), padding-left 0.18s var(--ease);
}
.footer-col__link:hover { color: var(--paper); padding-left: 4px; }
.footer-col__link[aria-current="page"] { color: var(--cyan); }

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  padding-block: 22px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.footer-contact__row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
  font-size: 13.5px;
  color: var(--steel);
}
.footer-contact__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-idx);
}
.footer-contact__val { color: var(--paper); overflow-wrap: anywhere; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding-block: 20px;
}
.footer-legal {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray-idx);
}
.footer-legal__icp { color: var(--steel); }
.footer-legal--muted { margin-left: auto; color: rgba(127, 143, 157, 0.85); }

/* ---------- 8. 通用组件：按钮 / 标签 / 面板 / 数字 ---------- */
.btn {
  --btn-bg: var(--ink-700);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 12px 22px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  clip-path: var(--cut-both);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn:hover { background: var(--ink-700); border-color: var(--line-cyan); color: var(--paper); }
.btn--primary {
  --btn-bg: var(--orange);
  --btn-fg: #0A1420;
  border-color: transparent;
}
.btn--primary:hover { background: var(--orange-soft); color: #0A1420; }
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--cyan);
  border-color: rgba(63, 224, 200, 0.42);
}
.btn--ghost:hover { background: rgba(63, 224, 200, 0.1); color: var(--cyan); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  background: rgba(23, 41, 60, 0.6);
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.tag--cyan { background: var(--cyan); color: #062B26; border-color: transparent; }
.tag--amber { background: var(--amber); color: #2B1D00; border-color: transparent; }
.tag--orange { background: var(--orange); color: #2A0E00; border-color: transparent; }

.index-badge {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--line-cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.panel {
  padding: 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: var(--cut);
}
.panel--raised { background: var(--ink-700); }
.panel--track {
  background: var(--track);
  border-color: rgba(63, 224, 200, 0.16);
}

.stat-block { display: flex; flex-direction: column; gap: 4px; }
.stat-block__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  color: var(--paper);
}
.stat-block__value--cyan { color: var(--cyan); }
.stat-block__value--orange { color: var(--orange); }
.stat-block__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gray-idx);
}
.stat-block--xl .stat-block__value { font-size: clamp(64px, 10vw, 120px); }

/* ---------- 9. 章节头 / 旁注 / 正文 ---------- */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 16px;
  padding-bottom: 12px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--line);
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.section-head__title { font-size: clamp(22px, 2.4vw, 28px); }
.section-head__note {
  margin-left: auto;
  font-size: 13px;
  color: var(--gray-idx);
}

.side-note {
  padding-left: 12px;
  border-left: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--gray-idx);
}

.prose {
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: #D8E1E8;
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(22px, 2.2vw, 26px);
}
.prose h3 {
  margin-top: 1.6em;
  font-size: 19px;
  color: var(--cyan);
}
.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(63, 224, 200, 0.35);
}
.prose ul > li {
  position: relative;
  padding-left: 1.1em;
}
.prose ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs { padding-block: 18px; }
.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray-idx);
}
.breadcrumbs__item { display: flex; align-items: center; gap: 10px; }
.breadcrumbs__item:not(:last-child)::after {
  content: "/";
  color: rgba(169, 184, 198, 0.35);
}
.breadcrumbs__link { color: var(--steel); transition: color 0.18s var(--ease); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs__current { color: var(--paper); }

/* ---------- 11. 图像容器（页面阶段放置占位） ---------- */
.media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
  clip-path: var(--cut);
}
.media__frame {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #12181D 0%, #0F2A2C 100%);
}
.media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(169, 184, 198, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 184, 198, 0.07) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.06);
}
.media__placeholder {
  position: relative;
  z-index: 1;
  padding-inline: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(169, 184, 198, 0.55);
  text-align: center;
}
.media__badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
}
.media__caption {
  position: relative;
  z-index: 1;
  padding: 14px 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--steel);
}
.media--wide .media__frame { aspect-ratio: 21 / 9; }
.media--tall .media__frame { aspect-ratio: 4 / 5; }
.media--square .media__frame { aspect-ratio: 1 / 1; }

/* ---------- 12. 分段切换 ---------- */
.segmented {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: var(--cut);
}
.segmented__btn {
  min-height: 44px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--steel);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.segmented__btn:hover { color: var(--paper); }
.segmented__btn.is-active { background: var(--cyan); color: #062B26; }
.segmented--orange .segmented__btn.is-active { background: var(--orange); color: #2A0E00; }

[data-panel][hidden] { display: none; }

/* ---------- 13. 显现 ---------- */
[data-reveal] { opacity: 1; transform: none; }
html[data-js] [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.38s var(--ease), transform 0.38s var(--ease);
}
html[data-js] [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式 ---------- */
@media (max-width: 1180px) {
  .primary-nav__link { padding: 0 10px; font-size: 14px; }
  .primary-nav__link::before { display: none; }
}

@media (max-width: 1024px) {
  html { scroll-padding-top: 96px; }

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

  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    background: var(--ink-800);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transition: max-height 0.28s var(--ease);
  }
  .site-header[data-open] .primary-nav {
    max-height: min(72vh, 600px);
    overflow-y: auto;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
  }
  .primary-nav__link {
    width: 100%;
    justify-content: space-between;
    min-height: 52px;
    padding: 14px 20px;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
    font-size: 15.5px;
  }
  .primary-nav__link::before { display: inline; }
  .primary-nav__item:last-child .primary-nav__link { border-bottom: 0; }
  .primary-nav__link[aria-current="page"] {
    background: rgba(63, 224, 200, 0.14);
    color: var(--cyan);
    border-left-color: var(--cyan);
  }
  .drawer-meta {
    display: block;
    padding: 14px 20px 18px;
    border-top: 1px solid var(--line-soft);
  }

  .grid-12 { gap: 20px; }
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-7, .col-8, .col-9 { grid-column: span 12; }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .utility-nav { display: none; }
  .header-utility__inner { gap: 12px; }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; }

  body { font-size: 15.5px; }

  .header-utility__inner { padding-block: 7px; }
  .brand-sig { font-size: 11px; letter-spacing: 0.05em; }
  .season-chip { font-size: 11px; padding: 2px 8px; }
  .brand__name { font-size: 17px; }
  .brand__sub { display: none; }
  .brand__mark { width: 34px; height: 34px; font-size: 16px; }

  .quick-rail__label { display: none; }
  .quick-rail__inner { gap: 10px; }

  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-12 {
    grid-column: span 12;
  }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-contact { flex-direction: column; gap: 10px; }
  .footer-legal--muted { margin-left: 0; }
  .section-head__note { margin-left: 0; }
}

/* ---------- 15. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html[data-js] [data-reveal] { opacity: 1; transform: none; }
  .scroll-progress__bar { transition: none; }
  .season-chip__pulse { animation: none; box-shadow: none; }
}