/* ============================================================
   博澳娱乐 · 赛事数据档案 —— 共享层 /assets/site.css
   框架式导航：左右细栏围合成页面边框，中央为数据内容流
   ============================================================ */

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

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

ul, ol { list-style: none; }

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

button, input, select, textarea { font: inherit; color: inherit; background: none; border: 0; }

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

abbr[title] { text-decoration: none; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0B1C2C;
  --ink-950: #071320;
  --panel: #12293D;
  --cyan: #00E5C4;
  --orange: #FF5C1A;
  --grass: #3A7D44;
  --grass-lit: #5FB86C;
  --silver: #B0BEC5;
  --mist: #E6EEF3;
  --graphite: #8A97A3;
  --paper: #F3F6F8;
  --paper-ink: #1B2A36;
  --amber: #FFC24B;

  --rail-w: 72px;
  --top-h: 78px;
  --gap: 24px;
  --maxw: 1440px;

  --font-display: 'Archivo Black', 'Inter', system-ui, 'Source Han Sans SC', 'Noto Sans SC', sans-serif;
  --font-body: 'Inter', 'Source Han Sans SC', system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --hair: rgba(176, 190, 197, 0.18);
  --hair-strong: rgba(176, 190, 197, 0.34);
}

/* ---------- 3. 基础排版 ---------- */
html { -webkit-text-size-adjust: 100%; }

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

body {
  margin: 0;
  padding: var(--top-h) var(--rail-w) 0;
  min-height: 100vh;
  background: var(--ink-900);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

body.is-nav-open { overflow: hidden; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-align: left;
}

h1 { font-size: clamp(40px, 6vw, 64px); }
h2 { font-size: clamp(28px, 4vw, 40px); }
h3 { font-size: clamp(22px, 2.6vw, 28px); }
h4 { font-size: 20px; }

p { margin: 0; }

strong, b { color: var(--mist); font-weight: 700; }

::selection { background: var(--cyan); color: var(--ink-950); }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.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;
}

/* ---------- 4. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 3vw, 40px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.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-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

.section { padding: clamp(48px, 7vw, 96px) 0; }
.section--tight { padding: clamp(28px, 4vw, 56px) 0; }
.section--ink { background: var(--ink-950); }
.section--panel { background: var(--panel); }
.section--paper { background: var(--paper); color: var(--paper-ink); }
.section--paper h1, .section--paper h2, .section--paper h3 { color: var(--paper-ink); }

.narrow { max-width: 68ch; }

.cut-top { clip-path: polygon(0 2vw, 100% 0, 100% 100%, 0 100%); }
.cut-bottom { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2vw), 0 100%); }

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.btn--accent { background: var(--cyan); color: var(--ink-950); border-color: var(--cyan); }
.btn--accent:hover { background: var(--mist); border-color: var(--mist); }

.btn--ghost { background: transparent; color: var(--mist); border-color: var(--orange); }
.btn--ghost:hover { background: rgba(255, 92, 26, 0.14); color: var(--orange); }

.btn--quiet { background: var(--panel); color: var(--mist); border-color: var(--hair-strong); }
.btn--quiet:hover { border-color: var(--cyan); color: var(--cyan); }

.btn--sm { padding: 8px 14px; font-size: 13px; }

/* ---------- 6. 头部框架 ---------- */
.site-header { position: relative; z-index: 70; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 12px 18px;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); }

.frame-top {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: var(--rail-w);
  height: var(--top-h);
  z-index: 70;
  display: grid;
  grid-template-columns: minmax(180px, auto) 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  background: rgba(7, 19, 32, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hair-strong);
}

/* 品牌 */
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }

.brand__mark {
  position: relative;
  flex: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--hair-strong);
  overflow: hidden;
}
.brand__mark::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: var(--cyan);
}
.brand__mark::after {
  content: "";
  position: absolute;
  left: 8px; top: 8px;
  width: 11px; height: 11px;
  border-top: 2px solid var(--orange);
  border-left: 2px solid var(--orange);
}

.brand__text { display: block; min-width: 0; }

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1.2;
  color: var(--mist);
  white-space: nowrap;
}

.brand__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  white-space: nowrap;
}

/* 指标条 */
.metric-strip {
  display: flex;
  align-items: center;
  gap: 22px;
  min-width: 0;
}

.metric-strip__hint {
  flex: none;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
  white-space: nowrap;
  transition: color 0.25s ease;
}
.metric-strip__hint:hover { color: var(--cyan); }

.metric-strip__list {
  display: flex;
  align-items: center;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.metric-strip__list::-webkit-scrollbar { display: none; }

.metric {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 0 18px;
  border-left: 1px dashed var(--hair-strong);
  white-space: nowrap;
}
.metric:first-child { padding-left: 0; border-left: 0; }

.metric__label { font-size: 12px; color: var(--graphite); }

.metric__value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.metric__unit { font-size: 0.7em; color: var(--cyan); }

.metric__delta { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em; }

.is-up { color: var(--grass-lit); }
.is-down { color: var(--orange); }
.is-flat { color: var(--graphite); }

.frame-top__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--hair-strong);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bars span { display: block; height: 2px; background: currentColor; }

.nav-toggle[aria-expanded="true"] { border-color: var(--cyan); color: var(--cyan); }

/* 左栏：竖排栏目索引 */
.frame-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 66;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: calc(var(--top-h) + 20px) 0 20px;
  background: var(--ink-950);
  border-right: 1px solid var(--hair);
}

.frame-nav__list {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  overflow-y: auto;
}

.frame-nav__item { width: 100%; display: flex; justify-content: center; }

.frame-nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--graphite);
  border-left: 2px solid transparent;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}
.frame-nav__link:hover { color: var(--mist); background: rgba(0, 229, 196, 0.07); }

.frame-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.frame-nav__label { display: inline; }

.frame-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(0, 229, 196, 0.09);
}
.frame-nav__link[aria-current="page"] .frame-nav__idx { color: var(--orange); }

.frame-nav__note {
  margin-top: 14px;
  padding-top: 12px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--graphite);
  border-top: 1px solid var(--hair);
}

/* 右栏：当轮数据轨道 */
.frame-rail {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 66;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: calc(var(--top-h) + 20px) 0 20px;
  background: var(--ink-950);
  border-left: 1px solid var(--hair);
}

.frame-rail__title {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--orange);
}

.frame-rail__list { width: 100%; display: flex; flex-direction: column; }

.frame-rail__list li {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 0;
  border-top: 1px solid var(--hair);
}

.frame-rail__k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.frame-rail__v {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan);
}

.frame-rail__link {
  margin-top: auto;
  padding: 12px 8px;
  writing-mode: vertical-rl;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  border: 1px solid var(--hair-strong);
  transition: color 0.25s ease, border-color 0.25s ease;
}
.frame-rail__link:hover { color: var(--cyan); border-color: var(--cyan); }

/* 阅读进度线 */
.scroll-progress {
  position: fixed;
  top: calc(var(--top-h) - 2px);
  left: var(--rail-w);
  right: var(--rail-w);
  height: 2px;
  z-index: 80;
  background: rgba(176, 190, 197, 0.12);
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 120px);
  background: var(--ink-950);
  color: var(--graphite);
  border-top: 1px solid var(--hair);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: min(360px, 62%);
  background: linear-gradient(90deg, var(--cyan) 0 62%, var(--orange) 62% 100%);
}

.footer {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 40px 24px;
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: 28px;
}

.footer__brand { grid-column: span 4; }

.footer__logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.footer__logo-sub {
  padding: 2px 6px;
  border: 1px solid rgba(0, 229, 196, 0.5);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.footer__brandline { margin-top: 8px; font-size: 14px; color: var(--silver); }

.footer__lede { margin-top: 10px; max-width: 36ch; font-size: 13px; line-height: 1.8; }

.footer__cols {
  grid-column: span 5;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 20px;
}

.footer__col-title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.footer__list { display: grid; gap: 9px; }

.footer__list a {
  display: inline-block;
  font-size: 14px;
  color: var(--silver);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer__list a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.footer__local { grid-column: span 3; }
.footer__local .btn { margin-top: 14px; }

.footer__coord {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.footer__contact { grid-column: span 8; }

.footer__pairs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px 24px;
}

.footer__pair dt {
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--graphite);
}

.footer__pair dd { font-size: 14px; line-height: 1.7; color: var(--mist); }

.footer__base {
  grid-column: span 4;
  display: grid;
  gap: 8px;
  align-content: start;
  padding-left: 20px;
  border-left: 1px solid var(--hair);
}

.footer__legal { font-family: var(--font-mono); font-size: 12px; color: var(--silver); }
.footer__copy { font-family: var(--font-mono); font-size: 12px; color: var(--graphite); }
.footer__note { font-size: 12px; line-height: 1.75; }
.footer__note a { color: var(--silver); border-bottom: 1px solid var(--hair-strong); }
.footer__note a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* 返回顶部 */
.back-to-top {
  position: fixed;
  right: calc(var(--rail-w) + 20px);
  bottom: 20px;
  z-index: 75;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(18, 41, 61, 0.94);
  color: var(--mist);
  border: 1px solid var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.back-to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 8. 通用组件 ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hair-strong);
}

.section-head__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.section-head__title { font-family: var(--font-display); letter-spacing: -0.02em; }

.section-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

/* 展签 */
.plate {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(18, 41, 61, 0.65);
  border: 1px solid var(--hair-strong);
  border-left: 3px solid var(--cyan);
}

.plate__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.plate__title { font-family: var(--font-display); font-size: 16px; letter-spacing: -0.01em; color: var(--mist); }

.plate__meta { font-family: var(--font-mono); font-size: 11px; line-height: 1.7; color: var(--graphite); }

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver);
}
.tag--live { border-color: var(--cyan); color: var(--cyan); }
.tag--warn { border-color: var(--amber); color: var(--amber); }
.tag--trend { border-color: var(--grass); color: var(--grass-lit); }

/* 数据卡 */
.card {
  position: relative;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--hair);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: rgba(0, 229, 196, 0.55); }

.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.card__title { font-family: var(--font-display); font-size: 18px; color: var(--mist); }
.card__body { font-size: 15px; color: var(--silver); }

.card__foot {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

/* 指标数字 */
.stat { display: grid; gap: 4px; }

.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 120px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}

.stat__delta { font-family: var(--font-mono); font-size: 12px; color: var(--orange); }

/* 图像容器 */
.figure-block { display: block; }

.figure {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--hair);
}

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.12);
  transition: filter 0.35s ease, transform 0.6s ease;
}
.figure:hover .figure__img { filter: grayscale(0.35) contrast(1.05); transform: scale(1.02); }

.figure--21x9 { aspect-ratio: 21 / 9; }
.figure--16x9 { aspect-ratio: 16 / 9; }
.figure--4x3 { aspect-ratio: 4 / 3; }
.figure--1x1 { aspect-ratio: 1 / 1; }
.figure--3x4 { aspect-ratio: 3 / 4; }

.figure__tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 4px 10px;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.figure__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

/* 正文容器 */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--silver);
}

.prose h2, .prose h3 { margin: 2.2em 0 0.7em; color: var(--mist); }
.prose h2 { font-size: clamp(22px, 2.6vw, 28px); }
.prose h3 { font-size: 20px; }

.prose p { margin: 0 0 1.15em; }

.prose a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }

.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.2em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }

.prose blockquote {
  margin: 1.6em 0;
  padding: 14px 20px;
  background: rgba(18, 41, 61, 0.7);
  border-left: 3px solid var(--orange);
  font-size: 16px;
  color: var(--mist);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--cyan);
}

.prose--paper {
  max-width: 72ch;
  padding: clamp(24px, 4vw, 56px);
  background: var(--paper);
  color: var(--paper-ink);
}
.prose--paper h2, .prose--paper h3, .prose--paper strong, .prose--paper blockquote { color: var(--paper-ink); }
.prose--paper a { color: #0C6E60; }
.prose--paper blockquote { background: rgba(11, 28, 44, 0.06); border-left-color: var(--orange); }

/* 面包屑 */
.breadcrumb {
  padding: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--graphite);
}

.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }

.breadcrumb li + li::before { content: "/"; margin-right: 6px; color: var(--silver); }

.breadcrumb a { color: var(--graphite); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--cyan); }

/* ---------- 9. 显现动效 ---------- */
[data-reveal] { transition: opacity 0.45s ease, transform 0.45s ease; }
[data-reveal].is-hidden { opacity: 0; transform: translateY(16px); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 10. 响应式 ---------- */
@media (max-width: 1079px) {
  :root { --top-h: 104px; }

  body { padding: var(--top-h) 0 0; }

  .frame-top {
    left: 0;
    right: 0;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    gap: 0 16px;
    padding: 8px 16px;
    align-content: center;
  }

  .brand { grid-column: 1; grid-row: 1; }
  .frame-top__actions { grid-column: 2; grid-row: 1; }

  .metric-strip {
    grid-column: 1 / -1;
    grid-row: 2;
    gap: 14px;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--hair);
  }

  .metric-strip__hint { padding-left: 8px; }

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

  .frame-nav {
    position: fixed;
    top: var(--top-h);
    left: 0;
    right: 0;
    bottom: auto;
    width: auto;
    max-height: calc(100vh - var(--top-h));
    display: block;
    overflow-y: auto;
    padding: 8px 20px 24px;
    background: var(--ink-950);
    border-right: 0;
    border-bottom: 1px solid var(--hair-strong);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.24s ease, transform 0.24s ease, visibility 0.24s ease;
  }

  .frame-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .frame-nav__list { display: block; overflow: visible; }

  .frame-nav__item { display: block; width: 100%; }

  .frame-nav__link {
    writing-mode: horizontal-tb;
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 15px 4px;
    font-size: 19px;
    letter-spacing: 0.02em;
    border-left: 0;
    border-bottom: 1px solid var(--hair);
  }

  .frame-nav__link[aria-current="page"] {
    border-left: 0;
    border-bottom-color: var(--cyan);
    background: transparent;
  }

  .frame-nav__note {
    writing-mode: horizontal-tb;
    margin-top: 16px;
    padding-top: 12px;
  }

  .frame-rail { display: none; }

  .scroll-progress { left: 0; right: 0; }

  .footer__brand { grid-column: span 6; }
  .footer__cols { grid-column: span 6; }
  .footer__local { grid-column: span 6; }
  .footer__contact { grid-column: span 12; }
  .footer__base {
    grid-column: span 12;
    padding-left: 0;
    padding-top: 16px;
    border-left: 0;
    border-top: 1px solid var(--hair);
  }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-1, .col-2, .col-3, .col-4 { grid-column: span 3; }
  .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 { grid-column: span 6; }

  .section-head { flex-wrap: wrap; }
  .section-head__meta { margin-left: 0; width: 100%; }
}

@media (max-width: 720px) {
  .frame-top__cta { display: none; }
}

@media (max-width: 640px) {
  :root { --top-h: 96px; }

  body { font-size: 16px; }

  .metric-strip__hint { font-size: 10px; }
  .metric { padding: 0 12px; }
  .metric__value { font-size: 16px; }
  .metric__label { font-size: 11px; }

  .footer { gap: 32px 16px; }
  .footer__brand { grid-column: span 12; }
  .footer__cols { grid-column: span 12; }
  .footer__local { grid-column: span 12; }
  .footer__pairs { grid-template-columns: 1fr; }
  .footer__base { grid-column: span 12; }

  .back-to-top { right: 16px; bottom: 16px; }

  .grid { grid-template-columns: 1fr; }
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 { grid-column: span 1; }
}

/* ---------- 11. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

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

  .figure:hover .figure__img { transform: none; }
}