/* =========================================================
   米兰赛场 · 共享样式 /assets/site.css
   骨架：技术蓝图网格 / 红黑近单色 / 单一亮橙点睛
   ========================================================= */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: var(--ink-900);
  background-image: repeating-linear-gradient(90deg, rgba(46, 46, 54, .38) 0 1px, transparent 1px 96px);
}

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

ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0B0B0D;
  --ink-700: #17171B;
  --ink-line: #2E2E36;
  --rosso-600: #C8102E;
  --rosso-400: #E63950;
  --rosso-900: #6E0A1C;
  --orange: #FF6A13;
  --blue: #3B6FD4;
  --paper: #F4F1EC;
  --slate: #8A8A95;

  --paper-90: rgba(244, 241, 236, .90);
  --paper-72: rgba(244, 241, 236, .72);
  --paper-52: rgba(244, 241, 236, .52);
  --paper-14: rgba(244, 241, 236, .14);
  --paper-08: rgba(244, 241, 236, .08);

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

  --fs-12: 12px;
  --fs-14: 14px;
  --fs-18: 18px;
  --fs-24: 24px;
  --fs-36: 36px;
  --fs-56: clamp(38px, 4.6vw, 56px);
  --fs-88: clamp(48px, 7.4vw, 88px);
  --fs-168: clamp(54px, 11.6vw, 168px);

  --shell-w: 1440px;
  --gutter: clamp(20px, 4.2vw, 64px);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --shadow-plate: 0 1px 0 rgba(255, 255, 255, .04);
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.16; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 3.6vw, 52px); }
h2 { font-size: clamp(24px, 2.6vw, 36px); }
h3 { font-size: var(--fs-24); }
p { text-wrap: pretty; }

::selection { background: var(--rosso-600); color: var(--paper); }

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

#main-content { scroll-margin-top: 140px; }

/* ---------- 4. 布局工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid { display: grid; gap: 24px; }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.hairline {
  height: 0;
  border: 0;
  border-top: 1px solid var(--ink-line);
}

/* ---------- 5. 文字与标签 ---------- */
.display {
  font-size: var(--fs-168);
  font-weight: 200;
  line-height: .92;
  letter-spacing: -.02em;
}

.display--md {
  font-size: var(--fs-88);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -.02em;
}

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: .02em;
}

.index-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.index-label::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--rosso-600);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--ink-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper-72);
}

.stat { display: flex; flex-direction: column; gap: 6px; }

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0;
  color: var(--paper);
}

.stat__unit {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--slate);
  text-transform: uppercase;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--rosso-600);
  background: var(--rosso-600);
  color: var(--paper);
  font-size: var(--fs-14);
  line-height: 1;
  letter-spacing: .08em;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.btn:hover { background: var(--rosso-400); border-color: var(--rosso-400); }

.btn--ghost { background: transparent; border-color: var(--ink-line); color: var(--paper); }
.btn--ghost:hover { background: transparent; border-color: var(--orange); color: var(--orange); }

.btn--accent {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
  font-weight: 700;
}
.btn--accent:hover { background: #ff8340; border-color: #ff8340; color: var(--ink-900); }

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  padding-block: 14px;
  border-bottom: 1px solid var(--ink-line);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--slate);
}

.breadcrumb__list > li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--ink-line);
}

.breadcrumb__link { color: var(--paper-72); border-bottom: 1px solid transparent; transition: color .2s var(--ease), border-color .2s var(--ease); }
.breadcrumb__link:hover { color: var(--paper); border-color: var(--orange); }

/* ---------- 8. 正文 ---------- */
.prose {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--paper-90);
}

.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 2em; font-size: var(--fs-24); }
.prose h3 { margin-top: 1.6em; font-size: var(--fs-18); }
.prose a { border-bottom: 1px solid var(--rosso-600); }
.prose a:hover { border-color: var(--orange); color: var(--orange); }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose ul li { list-style: none; position: relative; padding-left: 14px; }
.prose ul li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 1px; background: var(--rosso-600); }
.prose ol { list-style: decimal; }

/* ---------- 9. 展签面板 / 数据表 / 图片容器 ---------- */
.plate {
  border: 1px solid var(--ink-line);
  background: var(--ink-700);
  box-shadow: var(--shadow-plate);
}

.plate__cap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ink-line);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.plate__body { padding: 18px 14px; }

.data-table {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--ink-line);
  text-align: right;
  white-space: nowrap;
}

.data-table th {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--slate);
  text-transform: uppercase;
}

.data-table th:first-child,
.data-table td:first-child { text-align: left; }

.data-table tbody tr:hover { background: rgba(200, 16, 46, .07); }

.figure {
  margin: 0;
  border: 1px solid var(--ink-line);
  background: var(--ink-700);
  box-shadow: var(--shadow-plate);
}

.figure__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--ink-900);
}

.figure__media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--square .figure__media { aspect-ratio: 1 / 1; }
.figure--tall .figure__media { aspect-ratio: 3 / 4; }

.figure__caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 14px;
  border-top: 1px solid var(--ink-line);
  font-size: 12px;
  color: var(--slate);
}

/* ---------- 10. 折叠面板 ---------- */
.accordion { border-top: 1px solid var(--ink-line); }

.accordion__item { border-bottom: 1px solid var(--ink-line); }

.accordion__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 0;
  text-align: left;
  font-size: 16px;
  color: var(--paper);
  transition: color .2s var(--ease);
}

.accordion__btn::after {
  content: "＋";
  flex: none;
  font-family: var(--font-mono);
  color: var(--slate);
  transition: color .2s var(--ease);
}

.accordion__btn:hover { color: var(--orange); }
.accordion__btn[aria-expanded="true"]::after { content: "－"; color: var(--orange); }

.accordion__panel {
  max-width: 720px;
  padding-bottom: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-72);
}

/* ---------- 11. 左栏章节索引 ---------- */
.section-nav__link {
  display: block;
  padding: 8px 0 8px 14px;
  border-left: 1px solid var(--ink-line);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.section-nav__link:hover { color: var(--paper-90); }
.section-nav__link.is-active { color: var(--paper); border-left-color: var(--orange); }

/* ---------- 12. 显现动效 ---------- */
[data-reveal] {
  opacity: 1;
  transform: none;
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

html[data-reveal="on"] [data-reveal] { opacity: 0; transform: translateY(8px); }
html[data-reveal="on"] [data-reveal].is-visible { opacity: 1; transform: none; }

/* ---------- 13. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--orange);
  color: var(--ink-900);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  transition: top .2s var(--ease);
}

.skip-link:focus { top: 12px; }

/* =========================================================
   14. 页头
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 11, 13, .95);
  border-bottom: 1px solid var(--ink-line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-progress {
  position: relative;
  height: 2px;
  background: rgba(46, 46, 54, .9);
}

.header-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .1s linear;
}

.header-upper {
  display: grid;
  grid-template-rows: 1fr;
  opacity: 1;
  background: var(--ink-900);
  border-bottom: 1px solid var(--ink-line);
  transition: grid-template-rows .35s var(--ease), opacity .25s var(--ease);
}

.site-header[data-condensed] .header-upper {
  grid-template-rows: 0fr;
  opacity: 0;
}

.header-upper__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
  min-height: 0;
  overflow: hidden;
  padding-top: 18px;
  padding-bottom: 18px;
}

/* 品牌 */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand__mark {
  flex: none;
  width: 18px;
  height: 18px;
  border: 1px solid var(--rosso-600);
  background: linear-gradient(90deg, var(--rosso-600) 0 50%, var(--ink-900) 50% 100%);
}

.brand__text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.brand__name {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .06em;
  color: var(--paper);
}

.brand__line {
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: .16em;
  color: var(--slate);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-upper__meta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: none;
}

/* 赛季切换器 */
.season-switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.season-switch__label {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.season-switch__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--ink-line);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--paper);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.season-switch__btn:hover { border-color: var(--orange); color: var(--orange); }

.season-switch__caret {
  width: 6px;
  height: 6px;
  margin-top: -3px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}

.season-switch__btn[aria-expanded="true"] .season-switch__caret { transform: rotate(-135deg); margin-top: 3px; }

.season-switch__panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 80;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(320px, 76vw);
  max-height: 280px;
  overflow-y: auto;
  padding: 1px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .55);
}

.season-switch__opt {
  width: 100%;
  padding: 8px 6px;
  background: var(--ink-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--slate);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

.season-switch__opt:hover { background: var(--rosso-600); color: var(--paper); }
.season-switch__opt[aria-pressed="true"] { background: var(--orange); color: var(--ink-900); font-weight: 700; }

.header-mail {
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--slate);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.header-mail:hover { color: var(--paper); border-color: var(--rosso-600); }

/* 下层导航 */
.site-nav {
  position: relative;
  background: var(--ink-700);
  border-bottom: 1px solid var(--ink-line);
}

.site-nav::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 5;
  background: rgba(11, 11, 13, .78);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), visibility .25s linear;
}

.site-nav[data-open]::before { opacity: 1; visibility: visible; }

.site-nav__inner {
  position: relative;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-nav__unit {
  flex: none;
  margin-left: auto;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--slate);
}

.nav-list {
  display: flex;
  flex: 1 1 auto;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 2px;
}

.nav-list__item { display: flex; }

.nav-list__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 15px 18px;
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--paper-90);
  transition: color .2s var(--ease);
}

.nav-list__link::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--slate);
  opacity: .5;
  transition: background-color .2s var(--ease), opacity .2s var(--ease);
}

.nav-list__link::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 1px;
  background: var(--paper);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s var(--ease);
}

.nav-list__link:hover { color: var(--paper); }
.nav-list__link:hover::before { background: var(--paper); opacity: .9; }
.nav-list__link:hover::after { transform: scaleX(1); }

.nav-list__link[aria-current="page"] { color: var(--paper); font-weight: 700; }
.nav-list__link[aria-current="page"]::before { background: var(--rosso-600); opacity: 1; }
.nav-list__link[aria-current="page"]::after { background: var(--rosso-600); transform: scaleX(1); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 15px 4px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--paper);
}

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 10px;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--paper);
  transition: transform .25s var(--ease);
}

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

.site-nav[data-open] .nav-toggle__bars::before { transform: translateY(4.5px) rotate(45deg); }
.site-nav[data-open] .nav-toggle__bars::after { transform: translateY(-4.5px) rotate(-45deg); }

.site-nav[data-open] .nav-toggle { color: var(--orange); }
.site-nav[data-open] .nav-toggle__bars::before,
.site-nav[data-open] .nav-toggle__bars::after { background: var(--orange); }

/* =========================================================
   15. 页脚
   ========================================================= */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 96px;
  border-top: 1px solid var(--rosso-600);
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--rosso-900) 100%);
}

/* 赛季索引带 */
.footer-season {
  padding-block: 36px;
  border-bottom: 1px solid var(--paper-14);
}

.footer-season__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 18px 40px;
}

.footer-season__head { flex: 0 0 180px; }

.footer-season__title {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--paper-72);
}

.footer-season__note {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--slate);
}

.footer-season__list {
  flex: 1 1 420px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.footer-season__item {
  padding: 3px 8px;
  border: 1px solid var(--paper-14);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--paper-72);
}

.footer-season__cta {
  flex: 0 0 100%;
  align-self: flex-start;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--paper);
  border-bottom: 1px solid var(--orange);
  padding-bottom: 2px;
  transition: color .2s var(--ease);
}

.footer-season__cta:hover { color: var(--orange); }

/* 主体 */
.footer-main {
  padding-block: 48px;
  border-bottom: 1px solid var(--paper-14);
}

.footer-main__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.4fr;
  gap: 36px 48px;
}

.footer-brand { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }

.footer-brand__link {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--paper);
}

.footer-brand__note {
  max-width: 340px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-72);
}

.footer-nav__title,
.footer-contact__title {
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--paper-52);
}

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 18px;
}

.footer-nav__list a {
  font-size: 14px;
  color: var(--paper-90);
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.footer-nav__list a:hover { color: var(--paper); border-color: var(--orange); }

.footer-contact__item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--paper-08);
  font-size: 13px;
}

.footer-contact__item:first-child { border-top: 0; padding-top: 0; }

.footer-contact__label {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--paper-52);
  padding-top: 3px;
}

.footer-contact__value {
  color: var(--paper-90);
  word-break: break-word;
}

.footer-contact__value--mono { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .01em; }

a.footer-contact__value { border-bottom: 1px solid transparent; transition: color .2s var(--ease), border-color .2s var(--ease); }
a.footer-contact__value:hover { color: var(--orange); border-color: var(--orange); }

/* 法务行 */
.footer-legal { padding-block: 22px 32px; }

.footer-legal__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 28px;
  font-size: 12px;
  color: var(--paper-52);
}

.footer-legal__links { display: flex; flex-wrap: wrap; gap: 10px 20px; }

.footer-legal__links a {
  color: var(--paper-72);
  padding-bottom: 1px;
  border-bottom: 1px solid var(--paper-14);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.footer-legal__links a:hover { color: var(--paper); border-color: var(--orange); }

.footer-legal__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
}

.footer-legal__sep { color: var(--paper-14); }

.footer-legal__copy {
  flex: 1 1 100%;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper-52);
}

/* =========================================================
   16. 响应式
   ========================================================= */
@media (max-width: 1080px) {
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .footer-main__inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .site-nav__unit { display: none; }

  .nav-list {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    z-index: 7;
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    width: min(320px, 78vw);
    padding: 84px 0 40px;
    overflow-y: auto;
    background: var(--ink-700);
    border-left: 1px solid var(--ink-line);
    transform: translateX(101%);
    transition: transform .3s var(--ease);
  }

  .site-nav[data-open] .nav-list { transform: translateX(0); }

  .nav-list__item { width: 100%; }

  .nav-list__link {
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
  }

  .nav-list__link::after { left: 24px; right: 24px; }

  body.nav-open { overflow: hidden; }

  .footer-season__head { flex: 1 1 100%; }
}

@media (max-width: 720px) {
  .header-mail { display: none; }
  .brand__line { display: none; }
  .header-upper__inner { padding-top: 14px; padding-bottom: 14px; }
  .header-upper__meta { gap: 10px; }
  .footer-main__inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-nav__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-footer { margin-top: 64px; }
}

@media (max-width: 560px) {
  .grid--12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .season-switch__label { display: none; }
  .season-switch__panel { grid-template-columns: repeat(3, minmax(0, 1fr)); width: min(280px, 86vw); }
  .footer-contact__item { grid-template-columns: 1fr; gap: 2px; }
  .footer-contact__label { padding-top: 0; }
  .figure--wide .figure__media { aspect-ratio: 16 / 9; }
}

/* =========================================================
   17. 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;
  }

  .header-progress__bar { transition: none; }
  .nav-list { transition: none; }
  html[data-reveal="on"] [data-reveal] { opacity: 1; transform: none; }
}