/* ==========================================================================
   宝威赛场 · 共享样式 /assets/site.css
   结构：00 重置 → 01 变量 → 02 基础排版 → 03 通用组件 → 04 页头 → 05 页脚
   ========================================================================== */

/* ---------- 00 重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

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

ul, ol { padding-left: 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; }

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

/* ---------- 01 变量 ---------- */
:root {
  --frame-green-900: #0B2B24;
  --board-green-700: #16453A;
  --pitch-ink-950: #06120F;
  --signal-orange-600: #E0521B;
  --signal-orange-300: #FF8A4C;
  --cool-blue-200: #C3D0D6;
  --slate-blue-500: #4A6470;
  --paper-cream: #F6F3EC;
  --wine-800: #5C1F2E;
  --indigo-700: #25315C;
  --pure-white: #FFFFFF;

  --fg: #06120F;
  --fg-soft: #4A6470;
  --paper: #F6F3EC;
  --line: rgba(74, 100, 112, 0.28);
  --line-strong: #C3D0D6;
  --line-on-dark: rgba(195, 208, 214, 0.22);

  --font-display: "Barlow Condensed", "Oswald", "Archivo Narrow", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "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", "SFMono-Regular", ui-monospace, Menlo, Consolas, "Courier New", monospace;

  --shell: min(1180px, calc(100% - 2.75rem));
  --ease: cubic-bezier(.2, .7, .2, 1);
  --dur: 320ms;
  --gap-block: clamp(2.75rem, 6vw, 5.5rem);
  --shadow-print: 5px 5px 0 rgba(11, 43, 36, 0.10);
  --shadow-print-dark: 6px 6px 0 rgba(6, 18, 15, 0.35);
}

@media (max-width: 640px) {
  :root { --shell: min(1180px, calc(100% - 1.75rem)); }
}

/* ---------- 02 基础排版 ---------- */
body {
  background: var(--paper);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--fg);
}

h1 { font-size: clamp(2.2rem, 5vw, 4.4rem); }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.55rem); line-height: 1.25; }
h4 { font-size: 1.05rem; line-height: 1.35; letter-spacing: 0.02em; }

p { text-wrap: pretty; }

.mono,
.num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.02em;
}

:focus-visible {
  outline: 2px solid var(--signal-orange-600);
  outline-offset: 3px;
}

.masthead :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--signal-orange-300);
}

/* ---------- 03 通用组件 ---------- */
.shell {
  width: var(--shell);
  margin-inline: auto;
}

.section { padding-block: var(--gap-block); }
.section--paper { background: var(--paper); }
.section--board { background: var(--board-green-700); color: var(--paper); }
.section--green { background: var(--frame-green-900); color: var(--paper); }
.section--wine { background: var(--wine-800); color: var(--paper); }
.section--indigo { background: var(--indigo-700); color: var(--paper); }

.section--board h1, .section--board h2, .section--board h3,
.section--green h1, .section--green h2, .section--green h3,
.section--wine h1, .section--wine h2, .section--wine h3,
.section--indigo h1, .section--indigo h2, .section--indigo h3 { color: var(--pure-white); }

.section__head {
  display: grid;
  gap: 0.6rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-blue-500);
}

.kicker::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--signal-orange-600);
}

.section--board .kicker,
.section--green .kicker,
.section--wine .kicker,
.section--indigo .kicker { color: var(--cool-blue-200); }

/* 中文长文 */
.prose { color: var(--fg); }
.prose > * + * { margin-top: 1.1em; }
.prose p,
.prose li { max-width: 36em; }
.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; margin-bottom: 0.5em; }
.prose ul { display: grid; gap: 0.55em; }
.prose ul li { position: relative; padding-left: 1.4em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--signal-orange-600);
}
.prose strong { font-weight: 600; color: var(--frame-green-900); }
.prose a {
  color: var(--frame-green-900);
  text-decoration: underline;
  text-decoration-color: var(--signal-orange-600);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
  transition: color var(--dur) var(--ease);
}
.prose a:hover { color: var(--signal-orange-600); }

/* 栅格 */
.grid { display: grid; gap: clamp(1rem, 2.5vw, 2rem); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }

@media (max-width: 860px) {
  .grid--2,
  .grid--3,
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

/* 印刷标签 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.08);
  color: var(--paper);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
}
.tag--signal { background: var(--signal-orange-600); color: var(--pure-white); }
.tag--wine { background: var(--wine-800); color: var(--pure-white); }
.tag--indigo { background: var(--indigo-700); color: var(--pure-white); }
.tag--paper { background: var(--paper); color: var(--frame-green-900); }
.tag--on-dark {
  background: rgba(255, 255, 255, 0.07);
  color: var(--paper);
  box-shadow: inset 0 0 0 1px rgba(195, 208, 214, 0.28);
}

/* 按钮 */
.btn {
  --btn-bg: var(--frame-green-900);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.62rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border-radius: 1px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--signal { --btn-bg: var(--signal-orange-600); --btn-fg: var(--pure-white); }
.btn--signal:hover { --btn-bg: var(--signal-orange-300); --btn-fg: var(--pitch-ink-950); }
.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--frame-green-900);
  box-shadow: inset 0 0 0 1px var(--frame-green-900);
}
.btn--ghost:hover { --btn-bg: var(--frame-green-900); --btn-fg: var(--paper); }

/* 纸张卡片 */
.panel {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  background: var(--pure-white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-print);
}
.panel--board {
  background: var(--board-green-700);
  border-color: rgba(195, 208, 214, 0.28);
  color: var(--paper);
  box-shadow: var(--shadow-print-dark);
}
.panel--wine { background: var(--wine-800); border-color: rgba(255, 255, 255, 0.18); color: var(--paper); box-shadow: var(--shadow-print-dark); }
.panel--indigo { background: var(--indigo-700); border-color: rgba(255, 255, 255, 0.18); color: var(--paper); box-shadow: var(--shadow-print-dark); }
.panel--board h2, .panel--board h3, .panel--board h4,
.panel--wine h2, .panel--wine h3, .panel--wine h4,
.panel--indigo h2, .panel--indigo h3, .panel--indigo h4 { color: var(--pure-white); }

/* 数据表 */
.table-scroll {
  overflow-x: auto;
  background: var(--pure-white);
  border: 1px solid var(--line);
}
.data-table { min-width: 520px; font-size: 0.95rem; }
.data-table caption {
  padding: 0.7rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-align: left;
  text-transform: uppercase;
  color: var(--slate-blue-500);
}
.data-table th {
  padding: 0.7rem 0.9rem;
  background: var(--board-green-700);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-align: left;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(195, 208, 214, 0.3);
}
.data-table td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid rgba(195, 208, 214, 0.55);
  vertical-align: top;
}
.data-table tbody tr:nth-child(odd) { background: var(--paper); }
.data-table tbody tr:hover { background: rgba(255, 138, 76, 0.14); }
.data-table td.num,
.data-table th.num { text-align: right; }

/* 图片容器基础规则（页面阶段放入 img 或占位） */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--board-green-700);
  border: 1px solid var(--line);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}
.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 0.45rem 0.7rem;
  background: rgba(6, 18, 15, 0.82);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(246, 243, 236, 0.18);
}

/* 面包屑 */
.breadcrumb {
  width: var(--shell);
  margin-inline: auto;
  padding: 1.1rem 0 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--slate-blue-500);
}
.breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.breadcrumb__item { display: inline-flex; align-items: center; gap: 0.4rem; }
.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--slate-blue-500);
  opacity: 0.55;
}
.breadcrumb__link {
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.breadcrumb__link:hover { color: var(--frame-green-900); border-bottom-color: var(--signal-orange-600); }
.breadcrumb__current { color: var(--frame-green-900); font-weight: 600; }

/* 滚动显现（由 JS 添加 .reveal） */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 04 页头 ---------- */
.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--signal-orange-600);
  color: var(--pure-white);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus-visible { transform: translateY(0); }

.masthead {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--frame-green-900);
  color: var(--paper);
  border-bottom: 1px solid var(--line-on-dark);
  box-shadow: 0 10px 24px -18px rgba(6, 18, 15, 0.95);
}

.masthead__inner {
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  grid-template-areas:
    "brand utility cta"
    "nav nav nav";
  align-items: center;
  gap: 0.55rem 1.25rem;
  padding-block: 0.7rem 0;
}

.masthead__brand {
  grid-area: brand;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.masthead__mark {
  flex: none;
  width: 8px;
  height: 30px;
  background: var(--signal-orange-600);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), 50% 100%, 0 calc(100% - 7px));
}

.masthead__names { display: grid; min-width: 0; }

.masthead__title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.masthead__brand:hover .masthead__title { color: var(--signal-orange-300); }

.masthead__sub {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1.5;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(246, 243, 236, 0.55);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.masthead__utility {
  grid-area: utility;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.masthead__mail {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(246, 243, 236, 0.72);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.masthead__mail:hover { color: var(--signal-orange-300); border-bottom-color: var(--signal-orange-300); }

.masthead__cta { grid-area: cta; }

.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid rgba(195, 208, 214, 0.35);
  border-radius: 1px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--paper);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover { border-color: var(--signal-orange-300); background: rgba(255, 255, 255, 0.06); }

.nav-toggle__bars { display: grid; gap: 3px; width: 16px; }
.nav-toggle__bar {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle.is-open .nav-toggle__bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.primary-nav {
  grid-area: nav;
  margin-top: 0.55rem;
  border-top: 1px solid var(--line-on-dark);
}

.primary-nav__list {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
}

.primary-nav__item { flex: 1 1 0; min-width: 0; }

.primary-nav__link {
  position: relative;
  display: grid;
  gap: 0.1rem;
  height: 100%;
  padding: 0.55rem 0.7rem 1rem;
  transition: background var(--dur) var(--ease);
}
.primary-nav__item + .primary-nav__item .primary-nav__link { border-left: 1px solid var(--line-on-dark); }
.primary-nav__link:hover { background: rgba(255, 255, 255, 0.05); }

.primary-nav__index {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(246, 243, 236, 0.45);
  transition: color var(--dur) var(--ease);
}

.primary-nav__label {
  font-size: 0.94rem;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: rgba(246, 243, 236, 0.92);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--dur) var(--ease);
}

.primary-nav__note {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: rgba(246, 243, 236, 0.62);
  opacity: 0;
  transform: translateY(-3px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.primary-nav__link:hover .primary-nav__note,
.primary-nav__link:focus-visible .primary-nav__note,
.primary-nav__link[aria-current="page"] .primary-nav__note {
  opacity: 1;
  transform: none;
}

.primary-nav__link:hover .primary-nav__label { color: var(--pure-white); }
.primary-nav__link:hover .primary-nav__index { color: var(--signal-orange-300); }

.primary-nav__link[aria-current="page"] { background: rgba(255, 255, 255, 0.06); }
.primary-nav__link[aria-current="page"] .primary-nav__index { color: var(--signal-orange-300); }
.primary-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0.7rem;
  width: 26px;
  height: 3px;
  background: var(--signal-orange-600);
  box-shadow: 0 0 12px rgba(224, 82, 27, 0.55);
}

.site-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: rgba(195, 208, 214, 0.16);
  pointer-events: none;
}
.site-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--signal-orange-600), var(--signal-orange-300));
  transition: width 120ms linear;
}

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

/* 页头 · 平板 */
@media (max-width: 1080px) {
  .primary-nav__label { font-size: 0.86rem; }
  .primary-nav__link { padding: 0.5rem 0.55rem 0.95rem; }
  .masthead__sub { letter-spacing: 0.1em; }
}

/* 页头 · 移动 */
@media (max-width: 900px) {
  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas:
      "brand toggle cta"
      "nav nav nav";
    gap: 0.5rem 0.6rem;
    padding-block: 0.6rem 0;
  }

  .masthead__utility { display: none; }
  .nav-toggle { display: inline-flex; }
  .masthead__cta { padding: 0.52rem 0.75rem; font-size: 0.68rem; letter-spacing: 0.08em; }

  .primary-nav {
    display: none;
    margin-top: 0.5rem;
    border-top: 1px solid var(--line-on-dark);
  }

  .primary-nav[data-open="true"] {
    display: block;
    max-height: calc(100vh - 8rem);
    overflow-y: auto;
    padding-bottom: 0.5rem;
  }

  .primary-nav__list { flex-direction: column; }
  .primary-nav__item { flex: none; }
  .primary-nav__item + .primary-nav__item .primary-nav__link { border-left: 0; }
  .primary-nav__item + .primary-nav__item { border-top: 1px solid var(--line-on-dark); }

  .primary-nav__link {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
    column-gap: 0.6rem;
    padding: 0.8rem 0.35rem 0.85rem;
  }
  .primary-nav__index { grid-row: 1; }
  .primary-nav__label { grid-row: 1; font-size: 1rem; }
  .primary-nav__note {
    grid-column: 2;
    grid-row: 2;
    opacity: 1;
    transform: none;
  }
  .primary-nav__link[aria-current="page"]::before { left: 0.35rem; top: 0.2rem; }
  .primary-nav__link[aria-current="page"] { background: rgba(255, 255, 255, 0.05); }
}

@media (max-width: 640px) {
  .masthead__sub { display: none; }
  .masthead__title { font-size: 1.05rem; }
  .masthead__mark { height: 24px; width: 7px; }
  .nav-toggle__text { display: none; }
  .nav-toggle { padding: 0.5rem; }
}

/* ---------- 05 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--frame-green-900);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7px;
  background: repeating-linear-gradient(90deg, var(--signal-orange-600) 0 3px, transparent 3px 15px);
  opacity: 0.9;
}

.footer__frame {
  width: var(--shell);
  margin-inline: auto;
  padding: clamp(1.9rem, 4vw, 3.4rem) 0 clamp(1.4rem, 3vw, 2.1rem);
}

.footer__brand-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 1rem;
  padding-bottom: 1.3rem;
  border-bottom: 1px solid var(--line-on-dark);
}

.footer__brand { min-width: 0; }

.footer__wordmark {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 3.1rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.footer__tagline {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: rgba(246, 243, 236, 0.62);
}

.footer__scale {
  width: 132px;
  height: 34px;
  background:
    linear-gradient(90deg, var(--signal-orange-600) 0 3px, transparent 3px) 0 100% / 100% 12px no-repeat,
    repeating-linear-gradient(90deg, rgba(195, 208, 214, 0.55) 0 1px, transparent 1px 11px) 0 100% / 100% 34px no-repeat;
  opacity: 0.75;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.2rem, 3vw, 2.5rem);
  padding: clamp(1.5rem, 3vw, 2.4rem) 0;
}

.footer__col { min-width: 0; }

.footer__heading {
  margin-bottom: 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line-on-dark);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal-orange-300);
}

.footer__list { display: grid; gap: 0.55rem; }
.footer__item { min-width: 0; }

.footer__link {
  display: inline-block;
  font-size: 0.94rem;
  color: rgba(246, 243, 236, 0.86);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer__link::before {
  content: "›";
  margin-right: 0.45rem;
  font-family: var(--font-mono);
  color: var(--signal-orange-300);
}
.footer__link:hover { color: var(--pure-white); border-bottom-color: var(--signal-orange-600); }

.footer__lines {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line-on-dark);
}

.footer__line {
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(246, 243, 236, 0.78);
  overflow-wrap: anywhere;
}

.footer__line--mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: rgba(246, 243, 236, 0.86);
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line-on-dark);
}

.footer__hours {
  max-width: 48ch;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(246, 243, 236, 0.7);
}

.footer__legal {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: rgba(246, 243, 236, 0.55);
}

.footer__closing {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.8;
  letter-spacing: 0.1em;
  color: rgba(246, 243, 236, 0.45);
}

@media (max-width: 860px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__scale { width: 96px; height: 28px; }
}

@media (max-width: 520px) {
  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__brand-row { grid-template-columns: minmax(0, 1fr); }
  .footer__scale { display: none; }
}

/* ---------- 06 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .btn:hover { transform: none; }
  .site-progress__bar { transition: none; }
}