/* ==========================================================================
   冠竞体育赛场 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件 / 响应式
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

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

ul[class],
ol[class] { list-style: none; }

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

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

a { color: var(--cyan); text-decoration: none; }

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 色板 */
  --ink-900: #070B22;
  --ink-800: #0B1030;
  --ink-700: #131A44;
  --line-blue: #1E2A6B;
  --cyan: #2BE3D6;
  --gold: #F2C46B;
  --green: #7CFF6B;
  --paper: #F7F1E3;
  --mist: #9AA4C8;
  --red: #E5484D;
  --white: #FFFFFF;

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

  /* 节奏 */
  --container: 1280px;
  --pad-edge: clamp(18px, 6vw, 88px);
  --header-h: 98px;
  --blueprint-24: 24px;
  --blueprint-96: 96px;
}

/* ---------- 3. 基础排版与蓝图背景 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(to right, rgba(30, 42, 107, 0.55) 0 1px, transparent 1px var(--blueprint-96)),
    repeating-linear-gradient(to bottom, rgba(30, 42, 107, 0.55) 0 1px, transparent 1px var(--blueprint-96)),
    repeating-linear-gradient(to right, rgba(30, 42, 107, 0.22) 0 1px, transparent 1px var(--blueprint-24)),
    repeating-linear-gradient(to bottom, rgba(30, 42, 107, 0.22) 0 1px, transparent 1px var(--blueprint-24));
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
}

h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p { max-width: 36em; }

::selection {
  background: var(--cyan);
  color: var(--ink-800);
}

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

#main-content:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -6px;
}

body.nav-locked { overflow: hidden; }

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 400;
  padding: 10px 16px;
  background: var(--gold);
  color: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 2px;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

.skip-link:focus-visible,
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 5. 头部 ---------- */
.site-header {
  --header-h: 98px;
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  height: var(--header-h);
  background: transparent;
  border-bottom: 0;
  transition: height 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header[data-scrolled="true"] {
  --header-h: 64px;
  background: rgba(11, 16, 48, 0.97);
  box-shadow: 0 1px 0 var(--line-blue), 0 24px 48px -40px #000000;
}

.site-header[data-open="true"] {
  background: var(--ink-800);
  box-shadow: 0 1px 0 var(--line-blue);
}

/* 顶部标尺 */
.header-ruler {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 18px;
  flex: 0 0 auto;
  padding-inline: var(--pad-edge);
  overflow: hidden;
  background: rgba(19, 26, 68, 0.6);
  border-bottom: 1px solid var(--line-blue);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(154, 164, 200, 0.78);
  transition: height 0.25s ease, opacity 0.2s ease;
}

.site-header[data-scrolled="true"] .header-ruler {
  height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}

.header-ruler__label { white-space: nowrap; }

.header-ruler__label--end { color: rgba(242, 196, 107, 0.72); }

.header-ruler__ticks {
  flex: 1 1 auto;
  height: 6px;
  min-width: 24px;
  background-image: repeating-linear-gradient(to right, var(--line-blue) 0 1px, transparent 1px 8px);
}

/* 主行 */
.header-inner {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-edge);
  min-height: 0;
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--paper);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--ink-700);
  border: 1px solid var(--cyan);
  color: var(--gold);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15px;
  letter-spacing: 0.04em;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.brand:hover .brand-mark,
.footer-brand:hover .brand-mark {
  border-color: var(--gold);
  color: var(--cyan);
}

.brand-text {
  display: grid;
  gap: 3px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.01em;
  line-height: 1.1;
  color: var(--paper);
  white-space: nowrap;
}

.brand-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  line-height: 1;
}

.brand-version {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid rgba(242, 196, 107, 0.45);
  border-radius: 2px;
  color: var(--gold);
}

.brand-coord {
  color: var(--mist);
  opacity: 0.7;
}

/* 导航 */
.primary-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: navidx;
}

.nav-item {
  counter-increment: navidx;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45em;
  padding: 10px 12px;
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 0.18s ease;
}

.nav-link::before {
  content: counter(navidx, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--mist);
  opacity: 0.6;
  transform: translateY(-0.35em);
  transition: color 0.18s ease, opacity 0.18s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 3px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s ease;
}

.nav-link:hover { color: var(--cyan); }

.nav-link:hover::after { transform: scaleX(1); }

.nav-link:hover::before {
  color: var(--gold);
  opacity: 1;
}

.nav-link[aria-current="page"] { color: var(--cyan); }

.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--cyan);
}

.nav-link[aria-current="page"]::before {
  color: var(--gold);
  opacity: 1;
}

/* 右侧工具 */
.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex: 0 0 auto;
}

.header-search {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--line-blue);
  border-radius: 2px;
  background: transparent;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  line-height: 1;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.header-search:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.header-search-icon { flex: 0 0 auto; }

.header-cta {
  padding: 9px 14px;
  font-size: 13px;
  letter-spacing: 0.06em;
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--line-blue);
  border-radius: 2px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  line-height: 1;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.nav-toggle-bars {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  flex: 0 0 auto;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.22s ease, top 0.22s ease, bottom 0.22s ease;
}

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

.site-header[data-open="true"] .nav-toggle-bars::before {
  top: 5px;
  transform: rotate(45deg);
}

.site-header[data-open="true"] .nav-toggle-bars::after {
  bottom: 5.5px;
  transform: rotate(-45deg);
}

/* 阅读进度线 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
  pointer-events: none;
  opacity: 0.9;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  --btn-fg: var(--cyan);
  --btn-bd: var(--cyan);
  --btn-bg: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.8em 1.2em;
  border: 1px solid var(--btn-bd);
  border-radius: 2px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease,
              box-shadow 0.18s ease, transform 0.18s ease;
}

.btn:hover {
  box-shadow: 5px 5px 0 -1px rgba(43, 227, 214, 0.3);
  transform: translate(-1px, -1px);
}

.btn:active { transform: translate(0, 0); }

.btn--gold {
  --btn-fg: var(--ink-800);
  --btn-bd: var(--gold);
  --btn-bg: var(--gold);
}

.btn--gold:hover { box-shadow: 5px 5px 0 -1px rgba(242, 196, 107, 0.38); }

.btn--ghost {
  --btn-fg: var(--paper);
  --btn-bd: var(--line-blue);
}

.btn--ghost:hover {
  --btn-fg: var(--cyan);
  --btn-bd: var(--cyan);
}

.btn--sm {
  padding: 0.6em 0.9em;
  font-size: 12px;
  letter-spacing: 0.08em;
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35em;
  list-style: none;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.4em;
  color: var(--line-blue);
}

.breadcrumb a { color: var(--mist); }
.breadcrumb a:hover { color: var(--cyan); }

.breadcrumb [aria-current="page"] { color: var(--gold); }

/* ---------- 8. 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-edge);
}

.section { padding-block: clamp(44px, 6.5vw, 96px); }

.section--narrow {
  max-width: 720px;
  margin-inline: auto;
}

.section--wide { max-width: none; }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px 28px;
  margin-bottom: 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-blue);
}

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

.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.stack > * + * { margin-top: var(--stack-gap, 18px); }

.rule {
  height: 1px;
  border: 0;
  background: var(--line-blue);
  margin-block: 24px;
}

.edge-cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

/* ---------- 9. 文字组件 ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--white);
}

.lead {
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.75;
  color: var(--mist);
  max-width: 34em;
}

.prose { max-width: 34em; font-size: 16px; line-height: 1.75; }
.prose > * + * { margin-top: 1em; }
.prose h3 { margin-top: 1.6em; }
.prose strong { color: var(--white); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.annotation {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.annotation--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.3em;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ---------- 10. 标签与卡片 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.25em 0.6em;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  color: var(--cyan);
  white-space: nowrap;
}

.tag--cyan { color: var(--cyan); }
.tag--gold { color: var(--gold); }
.tag--green { color: var(--green); }
.tag--red { color: var(--red); background: rgba(229, 72, 77, 0.12); }

.card {
  position: relative;
  display: block;
  padding: 22px 22px 24px 26px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: border-left-color 0.2s ease, background-color 0.2s ease;
}

.card:hover {
  border-left-color: var(--gold);
  background: #16204099;
}

.card__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.card:hover .card__index { color: var(--gold); }

.card__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.card p { color: var(--mist); font-size: 14px; }

/* 数字锚点 */
.stat {
  display: grid;
  gap: 6px;
  padding-block: clamp(16px, 3vw, 28px);
}

.stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--white);
}

.stat__value--green { color: var(--green); }
.stat__value--gold { color: var(--gold); }
.stat__value--cyan { color: var(--cyan); }

.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ---------- 11. 折叠面板 ---------- */
.fold {
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
  border-left: 2px solid var(--line-blue);
  transition: border-left-color 0.2s ease;
}

.fold + .fold { margin-top: 10px; }
.fold[open] { border-left-color: var(--cyan); }

.fold__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

.fold__summary::-webkit-details-marker { display: none; }

.fold__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.fold[open] .fold__summary::after { content: "–"; }
.fold__summary:hover { color: var(--cyan); }

.fold__body {
  padding: 14px 18px 18px;
  border-top: 1px solid rgba(30, 42, 107, 0.8);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

.fold__body > * + * { margin-top: 0.8em; }

/* ---------- 12. 响应式图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: var(--ratio, 16 / 9);
  width: 100%;
  background:
    linear-gradient(160deg, rgba(43, 227, 214, 0.14), transparent 55%),
    linear-gradient(340deg, rgba(242, 196, 107, 0.1), transparent 60%),
    var(--ink-700);
  border: 1px solid var(--line-blue);
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(43, 227, 214, 0.14) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom, rgba(43, 227, 214, 0.14) 0 1px, transparent 1px 48px);
  mix-blend-mode: screen;
}

.media-frame--tall { --ratio: 4 / 5; }
.media-frame--square { --ratio: 1 / 1; }
.media-frame--wide { --ratio: 21 / 9; }

.media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  padding: 4px 8px;
  background: rgba(11, 16, 48, 0.82);
  border: 1px solid var(--line-blue);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--paper);
}

/* ---------- 13. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 104px);
  background:
    linear-gradient(180deg, rgba(19, 26, 68, 0.72), transparent 42%),
    var(--ink-800);
  border-top: 1px solid var(--line-blue);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: min(320px, 42%);
  background: repeating-linear-gradient(to right, var(--cyan) 0 24px, transparent 24px 40px);
  opacity: 0.7;
}

.footer-top { padding-block: clamp(40px, 6vw, 78px); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.5fr;
  gap: 36px 28px;
  align-items: start;
}

.footer-col { min-width: 0; }

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.footer-tagline {
  margin-top: 16px;
  max-width: 20em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.footer-coord {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
  opacity: 0.72;
}

.footer-version {
  margin-top: 16px;
  font-size: 10px;
  letter-spacing: 0.16em;
}

.footer-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.footer-heading::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  flex: 0 0 auto;
}

.footer-list {
  display: grid;
  gap: 9px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 14px;
  color: var(--mist);
  line-height: 1.6;
  transition: color 0.18s ease, transform 0.18s ease;
}

.footer-link::before {
  content: "";
  width: 8px;
  height: 1px;
  background: var(--line-blue);
  transition: background-color 0.18s ease, width 0.18s ease;
}

.footer-link:hover {
  color: var(--cyan);
  transform: translateX(4px);
}

.footer-link:hover::before {
  background: var(--gold);
  width: 14px;
}

.footer-contact {
  display: grid;
  gap: 12px;
}

.footer-contact-item {
  display: grid;
  gap: 3px;
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mist);
  opacity: 0.8;
}

.footer-contact-value {
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.footer-note {
  margin-top: 16px;
  padding-left: 10px;
  border-left: 2px solid var(--gold);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 24em;
}

.footer-bottom {
  border-top: 1px solid var(--line-blue);
  background: rgba(11, 16, 48, 0.65);
  padding-block: 18px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.footer-copy { max-width: none; }

.footer-icp {
  color: var(--mist);
  opacity: 0.9;
}

/* ---------- 14. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ---------- 15. 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-link { padding: 10px 9px; font-size: 14px; }
  .nav-link::after { left: 9px; right: 9px; }
  .header-search-text { display: none; }
}

@media (max-width: 1000px) {
  .site-header { --header-h: 84px; }
  .site-header[data-scrolled="true"] { --header-h: 64px; }

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

  .primary-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    display: block;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 10px var(--pad-edge) 28px;
    background: rgba(11, 16, 48, 0.99);
    border-top: 1px solid var(--line-blue);
    border-bottom: 1px solid var(--line-blue);
    box-shadow: 0 30px 60px -30px #000000;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  }

  .site-header[data-open="true"] .primary-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    padding: 15px 0;
    width: 100%;
    font-size: 17px;
    border-bottom: 1px dashed rgba(30, 42, 107, 0.9);
  }

  .nav-link::after {
    left: 0;
    right: auto;
    bottom: 8px;
    width: 42px;
  }

  .nav-link::before { font-size: 10px; }

  .header-inner { gap: 12px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }
  .footer-col--brand { grid-column: 1 / -1; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 18px; }
  .col-4,
  .col-6,
  .col-8,
  .col-12 { grid-column: 1 / -1; }
  .col-4 { grid-column: span 3; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .header-ruler { font-size: 8.5px; letter-spacing: 0.14em; }
  .header-ruler__label--end { display: none; }
  .header-cta { display: none; }
  .brand-name { font-size: 15px; }
  .brand-coord { display: none; }
  .brand-mark { width: 38px; height: 38px; font-size: 13px; }

  .grid-12 { grid-template-columns: 1fr; }
  .col-4 { grid-column: 1 / -1; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-legal { flex-direction: column; align-items: flex-start; gap: 6px; }
  .footer-note { max-width: none; }
}

@media (min-width: 1001px) {
  .primary-nav { position: static; }
}

/* ---------- 16. 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] {
    opacity: 1;
    transform: none;
  }

  .header-progress { transition: none; }
}