/* =========================================================
   6688体育·中国站 — /assets/site.css
   草原夜空蓝底 · 主场炽热橙焦点 · 荧光绿数据高亮
   ========================================================= */

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

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

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

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

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

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

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  --night: #081A30;
  --night-deep: #050F1C;
  --deep: #0F2746;
  --orange: #FF6A1A;
  --orange-soft: #FFA45C;
  --lime: #B8FF4D;
  --cyan: #4DD8E6;
  --white: #F2F6FC;
  --body-text: #DCE6F5;
  --muted: #9FB2CC;
  --line: #274667;
  --warn: #FF5C5C;

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-1: 0 1px 0 rgba(255, 255, 255, .03), 0 12px 30px rgba(2, 8, 18, .45);
  --shadow-2: 0 22px 60px rgba(2, 8, 18, .62);
  --edge: 1px solid var(--line);

  --ease: cubic-bezier(.2, .7, .3, 1);
  --container: 1200px;
}

/* ---------- 3. Base ---------- */
body {
  background-color: var(--night);
  color: var(--body-text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 夜空光晕与草原轨迹线 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(920px 540px at 90% -12%, rgba(255, 106, 26, .20), transparent 70%),
    radial-gradient(760px 520px at -12% 28%, rgba(77, 216, 230, .09), transparent 72%),
    radial-gradient(600px 600px at 50% 120%, rgba(15, 39, 70, .9), transparent 70%);
}

h1, h2, h3, h4 {
  color: var(--white);
  font-weight: 900;
  letter-spacing: -.015em;
  line-height: 1.18;
}

strong { color: var(--white); font-weight: 700; }

a { text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(255, 106, 26, .35);
  color: var(--white);
}

.container {
  width: min(var(--container), 100% - 40px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--orange);
  color: #180800;
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top .18s var(--ease);
}

.skip-link:focus {
  top: 0;
}

/* ---------- 4. 通用排版组件 ---------- */
.section {
  padding: clamp(40px, 7vw, 84px) 0;
}

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  margin-bottom: 30px;
  border-bottom: var(--edge);
}

.section__title {
  font-size: clamp(22px, 3.4vw, 34px);
  letter-spacing: -.02em;
}

.section__desc {
  max-width: 52ch;
  color: var(--muted);
  font-size: 14px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--orange);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--orange);
}

.vlabel {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .42em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-hero {
  position: relative;
  padding: clamp(46px, 8vw, 96px) 0 clamp(30px, 5vw, 56px);
  overflow: hidden;
}

.page-hero__title {
  font-size: clamp(30px, 6vw, 64px);
  letter-spacing: -.03em;
  line-height: 1.05;
}

.page-hero__note {
  margin-top: 16px;
  max-width: 60ch;
  color: var(--muted);
}

.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  font-size: clamp(20px, 2.6vw, 26px);
  margin-top: 2em;
}

.prose h3 {
  font-size: 18px;
  margin-top: 1.6em;
}

.prose ul { list-style: none; }

.prose li {
  position: relative;
  padding-left: 20px;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

/* ---------- 5. 按钮与状态 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 22px;
  border: var(--edge);
  border-radius: 10px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease),
              box-shadow .18s var(--ease);
}

.btn--primary {
  background: linear-gradient(135deg, var(--orange), #FF8A3D);
  border-color: transparent;
  color: #1A0A00;
  box-shadow: 0 10px 28px rgba(255, 106, 26, .30);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(255, 106, 26, .38);
}

.btn--ghost {
  background: rgba(15, 39, 70, .55);
  border-color: var(--line);
  color: var(--white);
}

.btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange-soft);
}

.btn--block { width: 100%; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 3px 10px;
  border: var(--edge);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
  white-space: nowrap;
}

.tag--live {
  color: var(--lime);
  border-color: rgba(184, 255, 77, .45);
}

.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  animation: tagPulse 1.9s var(--ease) infinite;
}

@keyframes tagPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(184, 255, 77, .5); }
  50% { opacity: .55; box-shadow: 0 0 0 5px rgba(184, 255, 77, 0); }
}

/* ---------- 6. 数据组件 ---------- */
.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 600;
  letter-spacing: -.03em;
  color: var(--white);
  line-height: 1.05;
}

.stat__label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}

.delta--up { color: var(--lime); }
.delta--down { color: var(--warn); }

/* ---------- 7. 卡片 ---------- */
.card {
  position: relative;
  padding: 22px;
  border: var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(15, 39, 70, .92), rgba(8, 26, 48, .78));
  box-shadow: var(--shadow-1);
}

.card--floating {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  transform: translateZ(0);
}

.card--floating::before {
  content: "";
  position: absolute;
  top: 0;
  left: 22px;
  width: 54px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), transparent);
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.card__title {
  font-size: 17px;
  font-weight: 800;
}

.card__body { color: var(--body-text); }

.card__meta {
  margin-top: 14px;
  padding-top: 12px;
  border-top: var(--edge);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 8. 网格 ---------- */
.grid {
  display: grid;
  gap: 20px;
}

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

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--line);
  font-family: var(--font-mono);
}

.breadcrumb__link {
  color: var(--cyan);
  transition: color .18s var(--ease);
}

.breadcrumb__link:hover { color: var(--orange-soft); }

/* ---------- 10. 展开组 ---------- */
.accordion {
  border-top: var(--edge);
}

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

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 20px 4px;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  transition: color .18s var(--ease);
}

.accordion__trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--orange);
  border-bottom: 2px solid var(--orange);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .2s var(--ease);
}

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

.accordion__trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg) translate(-4px, -2px);
}

.accordion__trigger:hover { color: var(--orange-soft); }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .24s var(--ease);
}

.accordion__panel[data-open="true"] { grid-template-rows: 1fr; }

.accordion__inner {
  overflow: hidden;
  color: var(--body-text);
  font-size: 15px;
}

.accordion__inner > p { padding: 0 4px 20px; }

/* ---------- 11. 时间轴（更新日志式） ---------- */
.timeline {
  position: relative;
  padding-left: 26px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--orange), rgba(39, 70, 103, .2));
}

.timeline__item {
  position: relative;
  padding-bottom: 26px;
}

.timeline__marker {
  position: absolute;
  left: -26px;
  top: 7px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--orange);
  border-radius: 50%;
  background: var(--night);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, .10);
}

.timeline__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.timeline__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .06em;
}

/* ---------- 12. 媒体容器（页面阶段放置图片） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--deep), var(--night));
  box-shadow: var(--shadow-1);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(255, 106, 26, .16), transparent 55%);
}

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

.media-frame > img,
.media-frame > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 14px 16px;
  font-size: 13px;
  color: var(--white);
  background: linear-gradient(0deg, rgba(5, 15, 28, .92), transparent);
}

/* ---------- 13. 装饰与显现 ---------- */
.trajectory {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--line) 20%, var(--orange) 60%, transparent);
  opacity: .7;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(8, 26, 48, .94);
  border-bottom: var(--edge);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header__flare {
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(114deg,
    transparent 0 40%,
    rgba(255, 106, 26, .17) 40% 56%,
    rgba(77, 216, 230, .07) 56% 68%,
    transparent 68%);
}

.header__bar {
  position: relative;
  padding: 10px 0;
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--white);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 10px 10px 10px 2px;
  background: linear-gradient(140deg, var(--orange), var(--orange-soft));
  color: #1A0A00;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.04em;
  box-shadow: 0 6px 18px rgba(255, 106, 26, .35);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .01em;
}

.brand__tagline {
  font-size: 11px;
  letter-spacing: .32em;
  color: var(--muted);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 1;
  min-width: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}

.nav__item { display: flex; }

.nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 9px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: color .18s var(--ease), background .18s var(--ease),
              border-color .18s var(--ease);
}

.nav__index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .06em;
  color: rgba(159, 178, 204, .5);
  transition: color .18s var(--ease);
}

.nav__link:hover {
  color: var(--white);
  background: rgba(255, 106, 26, .10);
  border-color: var(--line);
}

.nav__link:hover .nav__index { color: var(--orange-soft); }

.nav__link[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 106, 26, .14);
  border-color: rgba(255, 106, 26, .45);
}

.nav__link[aria-current="page"] .nav__index { color: var(--orange); }

.header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.action-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: var(--edge);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.action-chip--ghost {
  color: var(--muted);
  background: rgba(15, 39, 70, .55);
}

.action-chip--ghost:hover {
  color: var(--white);
  border-color: var(--orange);
}

.action-chip--accent {
  color: #1A0A00;
  background: linear-gradient(135deg, var(--orange), var(--orange-soft));
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(255, 106, 26, .28);
}

.action-chip--accent:hover {
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: var(--edge);
  border-radius: 10px;
  background: rgba(15, 39, 70, .8);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: border-color .18s var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  width: 16px;
  height: 10px;
  flex: 0 0 auto;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transition: transform .18s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  transform: translateY(4px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-toggle__label { letter-spacing: .1em; }

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--orange), var(--lime));
  box-shadow: 0 0 12px rgba(255, 106, 26, .55);
  transition: width .1s linear;
}

/* ---------- 15. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  border-top: var(--edge);
  background: linear-gradient(180deg, rgba(15, 39, 70, .55), var(--night-deep));
  color: var(--muted);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 180px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
}

.footer__inner {
  padding: 54px 0 30px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.footer__brand { margin-bottom: 14px; }

.footer__desc {
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.8;
}

.footer__contact {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}

.footer__contact-item { line-height: 1.7; }

.footer__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--white);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer__link {
  font-size: 14px;
  color: var(--muted);
  transition: color .18s var(--ease);
}

.footer__link:hover { color: var(--orange-soft); }

.footer__link--strong {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
}

.footer__link--strong:hover { color: var(--orange-soft); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 42px;
  padding-top: 20px;
  border-top: var(--edge);
}

.footer__legal-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.footer__legal-link {
  font-size: 13px;
  color: var(--muted);
  transition: color .18s var(--ease);
}

.footer__legal-link:hover { color: var(--white); }

.footer__meta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(159, 178, 204, .8);
}

.footer__icp {
  padding: 2px 9px;
  border: var(--edge);
  border-radius: 999px;
  letter-spacing: .04em;
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1080px) {
  .nav__link { padding: 9px 8px; font-size: 13px; }
  .header__inner { gap: 14px; }
  .footer__grid { grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr)); gap: 24px; }
}

@media (max-width: 960px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand-col { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .header__inner { gap: 12px; }

  .header__nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 0 18px;
    background: rgba(6, 19, 35, .99);
    border-bottom: var(--edge);
    box-shadow: var(--shadow-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .18s var(--ease), transform .18s var(--ease),
                visibility .18s var(--ease);
  }

  .header__nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 0 16px;
  }

  .nav__link {
    justify-content: flex-start;
    padding: 13px 12px;
    font-size: 16px;
    border-radius: 10px;
  }

  .header__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin: 14px 16px 0;
    padding-top: 14px;
    border-top: var(--edge);
  }

  .action-chip { justify-content: center; padding: 12px 16px; }

  .nav-toggle { display: inline-flex; margin-left: auto; }

  .header__flare { width: 60%; }
}

@media (max-width: 767px) {
  .container { width: min(var(--container), 100% - 28px); }

  body { font-size: 15px; }

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

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

  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }

  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .brand__tagline { letter-spacing: .24em; }
}

@media (max-width: 400px) {
  .brand__name { font-size: 15px; }
  .brand__mark { width: 36px; height: 36px; font-size: 13px; }
  .nav-toggle__label { display: none; }
}

/* ---------- 17. 无障碍与动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}