/* =========================================================
   365赛事 · 共享外壳样式 / assets/site.css
   战术板 + 记分牌 · 侧边赛程轴 · 斜切分区 · 印刷边框
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body,
h1, h2, h3, h4, h5, p,
ul, ol, li,
figure, figcaption,
blockquote { margin: 0; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

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

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

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --ink-900: #0A1E18;
  --ink-850: #14171A;
  --ink-700: #123529;
  --moss-500: #2C5A4B;
  --paper-100: #F2EDE3;
  --paper-300: #D8D1C2;
  --cyan-400: #34F0CE;
  --orange-500: #FF6A2B;
  --gray-450: #7B8A84;
  --red-500: #E04A38;

  /* 版式度量 */
  --rail-w: 72px;
  --max-w: 1320px;
  --shell-pad: clamp(20px, 4vw, 64px);

  /* 字体 */
  --font-display: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  /* 节奏 */
  --ease: cubic-bezier(.22, .8, .28, 1);
  --stack-1: 6px;
  --stack-2: 8px;
}

/* ---------- 3. 基础排版 ---------- */
body {
  padding-left: var(--rail-w);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(rgba(44, 90, 75, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(44, 90, 75, .10) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: -1px -1px;
  background-attachment: fixed;
  color: var(--paper-100);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.05;
}

h1 { font-size: clamp(40px, 7vw, 88px); }
h2 { font-size: clamp(28px, 3.4vw, 44px); line-height: 1.08; }
h3 { font-size: 22px; line-height: 1.25; letter-spacing: -.01em; }

::selection {
  background: var(--cyan-400);
  color: #06201A;
}

:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 3px;
  border-radius: 2px;
}

.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. Skip link ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: calc(var(--rail-w) + 16px);
  z-index: 300;
  padding: 12px 20px;
  background: var(--cyan-400);
  color: #06201A;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .08em;
  border-radius: 2px;
  transition: top .18s var(--ease);
}
.skip-link:focus { top: 16px; }

/* ---------- 5. 侧边赛程轴 ---------- */
.rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 90;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-850) 100%);
  border-right: 1px solid rgba(44, 90, 75, .5);
}

.rail__track {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: rgba(44, 90, 75, .65);
  overflow: hidden;
}

.rail__progress {
  position: absolute;
  inset: 0;
  display: block;
  background: var(--cyan-400);
  transform: scaleY(var(--p, 0));
  transform-origin: top center;
  transition: transform .12s linear;
}

.rail__list {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.rail__node {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 22px;
  color: var(--paper-300);
}

.rail__node::before {
  content: "";
  display: block;
  width: 12px;
  height: 2px;
  background: var(--moss-500);
  transition: width .18s var(--ease), background-color .18s var(--ease);
}

.rail__node:hover::before,
.rail__node:focus-visible::before {
  width: 22px;
  background: var(--cyan-400);
}

.rail__node[data-active]::before {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 3px rgba(52, 240, 206, .18);
}

.rail__label {
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translate(-6px, -50%);
  padding: 4px 10px;
  background: var(--ink-850);
  border: 1px solid rgba(52, 240, 206, .38);
  border-radius: 2px;
  color: var(--paper-100);
  font-size: 11px;
  letter-spacing: .16em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .16s var(--ease), transform .16s var(--ease);
}

.rail__node:hover .rail__label,
.rail__node:focus-visible .rail__label {
  opacity: 1;
  transform: translate(0, -50%);
}

.rail__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rail__action {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(52, 240, 206, .4);
  border-radius: 50%;
  color: var(--cyan-400);
  transition: background-color .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease);
}

.rail__action:hover,
.rail__action:focus-visible {
  background: rgba(52, 240, 206, .14);
  border-color: var(--cyan-400);
  transform: translateY(-1px);
}

.rail__icon {
  position: relative;
  display: block;
  width: 16px;
  height: 16px;
}

.rail__icon--list::before,
.rail__icon--list::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
}
.rail__icon--list::before { top: 3px; box-shadow: 0 5px 0 currentColor; }
.rail__icon--list::after { top: 13px; }

.rail__icon--down::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 2px;
  height: 9px;
  background: currentColor;
  transform: translateX(-50%);
}
.rail__icon--down::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 5px;
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateX(-50%) rotate(45deg);
}

.rail__tip {
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translate(-6px, -50%);
  padding: 5px 10px;
  background: var(--ink-850);
  border: 1px solid rgba(52, 240, 206, .38);
  border-radius: 2px;
  color: var(--paper-100);
  font-size: 11px;
  letter-spacing: .16em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s var(--ease), transform .18s var(--ease);
}

.rail__action:hover .rail__tip,
.rail__action:focus-visible .rail__tip {
  opacity: 1;
  transform: translate(0, -50%);
}

/* ---------- 6. 刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(10, 30, 24, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(44, 90, 75, .5);
  transition: box-shadow .26s var(--ease), border-color .26s var(--ease);
}

.site-header[data-stuck] {
  border-bottom-color: rgba(52, 240, 206, .3);
  box-shadow: 0 14px 34px -20px rgba(0, 0, 0, .95);
}

.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 20px var(--shell-pad) 16px;
  transition: padding .28s var(--ease);
}

.site-header[data-stuck] .masthead {
  padding-top: 10px;
  padding-bottom: 8px;
}

.masthead__status {
  font-size: 11px;
  letter-spacing: .16em;
  line-height: 1.6;
  color: rgba(216, 209, 194, .62);
}

.masthead__brand {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(23px, 2.6vw, 34px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--paper-100);
  white-space: nowrap;
  padding-bottom: 4px;
}

.masthead__brand::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--cyan-400);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .2s var(--ease);
}

.masthead__brand:hover::after,
.masthead__brand:focus-visible::after { transform: scaleX(1); }

.masthead__right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
}

.masthead__contact {
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.6;
  color: rgba(216, 209, 194, .6);
  text-align: right;
}

.masthead__link {
  color: var(--cyan-400);
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}
.masthead__link:hover,
.masthead__link:focus-visible { border-bottom-color: var(--cyan-400); }

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid rgba(52, 240, 206, .38);
  border-radius: 2px;
  color: var(--cyan-400);
  font-size: 12px;
  letter-spacing: .16em;
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus-visible { background: rgba(52, 240, 206, .1); border-color: var(--cyan-400); }
.nav-toggle[aria-expanded="true"] { background: rgba(52, 240, 206, .14); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease), top .2s var(--ease);
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

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

/* ---------- 7. 导航横排 ---------- */
.nav-line {
  border-top: 1px solid rgba(44, 90, 75, .42);
  background: rgba(20, 23, 26, .6);
}

.nav-line__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

.nav-line__item {
  display: flex;
  align-items: center;
  font-size: 13px;
  letter-spacing: .14em;
}

.nav-line__item::after {
  content: "/";
  margin-inline: 6px;
  color: rgba(123, 138, 132, .45);
  font-size: 11px;
}

.nav-line__item:last-child::after { content: none; margin: 0; }

.nav-line__item a {
  position: relative;
  display: inline-block;
  padding: 14px 8px;
  color: var(--paper-300);
  transition: color .18s var(--ease);
}

.nav-line__item a::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 10px;
  height: 1px;
  background: var(--cyan-400);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}

.nav-line__item a:hover,
.nav-line__item a:focus-visible { color: var(--paper-100); }
.nav-line__item a:hover::after,
.nav-line__item a:focus-visible::after { transform: scaleX(1); }

.nav-line__item a[aria-current="page"] { color: var(--cyan-400); }
.nav-line__item a[aria-current="page"]::after { transform: scaleX(1); }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(80px, 10vw, 140px);
  background: var(--ink-900);
  border-top: 1px solid rgba(44, 90, 75, .45);
  overflow: hidden;
}

.footer__band {
  height: 14px;
  background: linear-gradient(90deg, var(--ink-700) 0%, var(--moss-500) 32%, var(--cyan-400) 72%, var(--orange-500) 100%);
  transform: skewY(-1deg) scaleX(1.08);
  transform-origin: left top;
}

.footer__inner { padding-block: 72px 36px; }

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.5fr;
  gap: clamp(32px, 5vw, 80px);
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(44, 90, 75, .35);
}

.footer__title {
  margin-bottom: 20px;
  color: var(--cyan-400);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  line-height: 1.6;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
  color: rgba(216, 209, 194, .82);
  font-size: 14px;
  line-height: 1.6;
  transition: color .18s var(--ease);
}

.footer__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--cyan-400);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}

.footer__link:hover,
.footer__link:focus-visible { color: var(--paper-100); }
.footer__link:hover::after,
.footer__link:focus-visible::after { transform: scaleX(1); }

.footer__contact {
  margin-bottom: 10px;
  color: rgba(216, 209, 194, .78);
  font-size: 14px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.footer__note {
  margin-top: 18px;
  padding-left: 12px;
  border-left: 2px solid var(--orange-500);
  color: var(--gray-450);
  font-size: 12px;
  line-height: 1.75;
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-block: 24px;
  border-bottom: 1px solid rgba(44, 90, 75, .28);
  color: var(--gray-450);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.7;
}

.footer__legal .footer__link { font-size: 12px; }
.footer__copy { font-family: var(--font-mono); letter-spacing: .06em; }

.footer__sign {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 36px;
}

.footer__signature {
  font-family: var(--font-display);
  font-size: clamp(34px, 7vw, 76px);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1;
  color: rgba(242, 237, 227, .12);
  white-space: nowrap;
}

.footer__version {
  flex: none;
  padding: 5px 12px;
  border: 1px solid rgba(255, 106, 43, .45);
  border-radius: 2px;
  color: var(--orange-500);
  font-size: 12px;
  letter-spacing: .24em;
}

/* ---------- 9. 通用布局 ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

.section {
  position: relative;
  padding-block: clamp(64px, 9vw, 128px);
}

.prose {
  max-width: 38em;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .86);
}

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

.prose a {
  color: var(--cyan-400);
  border-bottom: 1px solid rgba(52, 240, 206, .42);
  transition: border-color .18s var(--ease);
}
.prose a:hover,
.prose a:focus-visible { border-bottom-color: var(--cyan-400); }

.prose h2,
.prose h3 { margin-top: 1.6em; margin-bottom: .6em; color: var(--paper-100); }

.grid {
  display: grid;
  gap: clamp(24px, 3vw, 48px);
}

.split {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}

.split--reverse { grid-template-columns: 5fr 7fr; }

/* ---------- 10. 文字组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan-400);
  font-size: 11px;
  letter-spacing: .2em;
  line-height: 1.6;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
}

.annotation {
  color: var(--gray-450);
  font-size: 11px;
  letter-spacing: .16em;
  line-height: 1.7;
}

.num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}

.sticker {
  display: inline-block;
  padding: 4px 10px;
  background: var(--orange-500);
  border-radius: 2px;
  color: #1A0B04;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  line-height: 1.6;
}

.rule {
  height: 1px;
  margin-block: clamp(32px, 5vw, 64px);
  border: 0;
  background: rgba(44, 90, 75, .45);
}

/* ---------- 11. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  line-height: 1.2;
  transition: background-color .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.btn--primary {
  background: var(--cyan-400);
  color: #06201A;
}
.btn--primary:hover,
.btn--primary:focus-visible { background: #5CF6DA; transform: translateY(-1px); }

.btn--ghost {
  background: transparent;
  border-color: rgba(52, 240, 206, .5);
  color: var(--cyan-400);
}
.btn--ghost:hover,
.btn--ghost:focus-visible { background: rgba(52, 240, 206, .1); border-color: var(--cyan-400); }

.btn--sm { padding: 9px 16px; font-size: 12px; }

/* ---------- 12. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 22px;
  color: var(--gray-450);
  font-size: 11px;
  letter-spacing: .16em;
  line-height: 1.6;
}

.breadcrumb a { color: rgba(216, 209, 194, .72); transition: color .18s var(--ease); }
.breadcrumb a:hover,
.breadcrumb a:focus-visible { color: var(--cyan-400); }

.breadcrumb__sep { color: rgba(123, 138, 132, .55); }

/* ---------- 13. 面板 ---------- */
.panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-700);
  border: 1px solid rgba(44, 90, 75, .6);
  border-radius: 2px;
}

.panel--stack {
  box-shadow: var(--stack-1) var(--stack-1) 0 rgba(10, 30, 24, .8),
              calc(var(--stack-1) * 2) calc(var(--stack-1) * 2) 0 rgba(44, 90, 75, .18);
}

/* ---------- 14. 图片容器 ---------- */
.figure {
  position: relative;
  display: block;
  margin: 0;
}

.figure__frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--ink-700);
  border: 1px solid rgba(44, 90, 75, .55);
  box-shadow: var(--stack-2) var(--stack-2) 0 rgba(10, 30, 24, .72);
}

.figure__frame--wide { aspect-ratio: 21 / 9; }
.figure__frame--tall { aspect-ratio: 4 / 5; }
.figure__frame--skew {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 28px));
}

.figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.62) contrast(1.06) brightness(.86);
}

.figure__caption {
  margin-top: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--moss-500);
  color: var(--gray-450);
  font-size: 11px;
  letter-spacing: .14em;
  line-height: 1.7;
}

/* ---------- 15. 响应式 ---------- */
@media (min-width: 900px) and (max-width: 1180px) {
  .nav-line__item a { padding: 13px 10px; font-size: 12px; }
  .masthead__contact { font-size: 10px; }
}

@media (max-width: 899px) {
  body {
    padding-left: 0;
    font-size: 16px;
    background-size: 64px 64px;
  }

  /* 赛程轴收为顶部细进度条 */
  .rail {
    inset: 0 0 auto 0;
    width: auto;
    height: 3px;
    flex-direction: row;
    gap: 0;
    background: rgba(44, 90, 75, .55);
    border-right: 0;
    border-bottom: 0;
    z-index: 100;
  }
  .rail__track {
    position: absolute;
    inset: 0;
    width: auto;
    height: auto;
    transform: none;
    background: transparent;
    overflow: hidden;
  }
  .rail__progress {
    transform: scaleX(var(--p, 0));
    transform-origin: left center;
  }
  .rail__list,
  .rail__actions { display: none; }

  .skip-link { left: 16px; }

  /* 刊头折叠为一行 */
  .masthead {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 14px var(--shell-pad);
  }
  .site-header[data-stuck] .masthead { padding-top: 10px; padding-bottom: 10px; }
  .masthead__status { display: none; }
  .masthead__right { gap: 10px; }
  .masthead__contact { display: none; }
  .nav-toggle { display: inline-flex; }

  /* 导航折叠 */
  .nav-line { display: none; border-top: 0; }
  .nav-line[data-open] {
    display: block;
    border-top: 1px solid rgba(44, 90, 75, .42);
    background: var(--ink-850);
  }
  .nav-line__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--shell-pad) 22px;
  }
  .nav-line__item { font-size: 15px; }
  .nav-line__item::after { display: none; }
  .nav-line__item a {
    display: block;
    padding: 15px 0;
    border-bottom: 1px solid rgba(44, 90, 75, .32);
  }
  .nav-line__item a::after { left: 0; right: 0; bottom: 9px; }

  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__col--contact { grid-column: 1 / -1; }
  .footer__inner { padding-block: 56px 28px; }

  .split,
  .split--reverse { grid-template-columns: 1fr; }
}

@media (max-width: 599px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__sign { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer__legal { flex-direction: column; align-items: flex-start; gap: 8px; }
  .masthead__brand { font-size: 22px; }
}

/* ---------- 16. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    transition-delay: 0ms !important;
  }
}