/* ============================================================
   华体育赛事 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

:root {
  --signal-red: #D9242B;
  --deep-red: #9E1116;
  --pitch-green: #0E2B24;
  --charcoal: #15181A;
  --ink: #0B0D0E;
  --neon-mint: #3FE0B4;
  --mint-soft: #A8F2DC;
  --paper: #F5F2EA;
  --paper-dim: #E2DED2;
  --slate: #6B7276;
  --focus-gold: #FFD166;

  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --pill: 999px;

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: "Spline Sans Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --dur: 220ms;
  --rail-gutter: 0px;
}

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

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

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

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

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

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

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

table { border-collapse: collapse; }

/* ---------- 基础排版 ---------- */
html { scroll-behavior: smooth; }

body {
  padding-inline-end: var(--rail-gutter);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--charcoal);
  background-image:
    radial-gradient(110% 70% at 88% -10%, rgba(63, 224, 180, 0.10), transparent 62%),
    radial-gradient(90% 60% at -10% 8%, rgba(217, 36, 43, 0.12), transparent 58%);
  background-repeat: no-repeat;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
  text-wrap: balance;
}

p { text-wrap: pretty; }

strong { font-weight: 700; }

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

::selection {
  background: var(--signal-red);
  color: var(--paper);
}

/* ---------- 通用工具 ---------- */
.container {
  width: 100%;
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: var(--pill);
  background: var(--neon-mint);
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline-offset: 3px;
}

.section { padding-block: clamp(48px, 7vw, 96px); }

.section--paper {
  background: var(--paper);
  color: var(--charcoal);
}

.section--pitch {
  background: var(--pitch-green);
  color: var(--paper);
}

.section-head {
  display: grid;
  gap: 14px;
  max-width: 62ch;
}

.section-title {
  font-size: clamp(30px, 4.2vw, 48px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--neon-mint);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--signal-red);
}

.section--paper .eyebrow { color: var(--deep-red); }

.lede {
  max-width: 34ch;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.85;
  color: rgba(245, 242, 234, 0.78);
}

.section--paper .lede { color: #454B4E; }

.prose {
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
}

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

.prose a {
  color: var(--deep-red);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* 栅格 */
.grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.grid > * { grid-column: span 12; }

@media (min-width: 760px) {
  .col-4 { grid-column: span 4; }
  .col-5 { grid-column: span 5; }
  .col-7 { grid-column: span 7; }
  .col-8 { grid-column: span 8; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.btn--sm { font-size: 14px; padding: 9px 18px; }

.btn--primary {
  background: var(--signal-red);
  color: var(--paper);
}

.btn--primary:hover { background: var(--deep-red); }

.btn--ghost {
  background: transparent;
  border-color: rgba(245, 242, 234, 0.28);
  color: var(--paper);
}

.btn--ghost:hover {
  background: rgba(63, 224, 180, 0.12);
  border-color: var(--neon-mint);
  color: var(--mint-soft);
}

.btn--quiet {
  background: transparent;
  border-color: var(--paper-dim);
  color: var(--charcoal);
}

.btn--quiet:hover {
  background: var(--paper-dim);
  border-color: var(--charcoal);
}

.btn:active { transform: translateY(1px); }

/* ---------- 字标 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 4px 6px 4px 4px;
  border-radius: var(--radius-sm);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: 14px;
  background: var(--signal-red);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
}

.brand__text {
  display: grid;
  gap: 1px;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--paper);
}

.brand__tagline {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: rgba(245, 242, 234, 0.62);
}

.brand--footer .brand__mark {
  background: var(--pitch-green);
  color: var(--neon-mint);
  box-shadow: inset 0 0 0 1px rgba(63, 224, 180, 0.4);
}

/* ============================================================
   头部
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--charcoal);
  border-bottom: 1px solid rgba(168, 242, 220, 0.14);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(220px, 34%);
  height: 3px;
  background: linear-gradient(90deg, var(--signal-red), rgba(217, 36, 43, 0));
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
  padding-block: 10px;
}

.brand-slot { flex: 0 0 auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: auto;
}

.site-nav__brand { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 500;
  color: rgba(245, 242, 234, 0.78);
  transition: color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
  background: rgba(63, 224, 180, 0.12);
}

.site-nav__link[aria-current="page"] {
  background: var(--signal-red);
  border-color: var(--signal-red);
  color: var(--paper);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-mint);
  flex: 0 0 auto;
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: 10px;
  padding-inline-start: 12px;
  border-inline-start: 1px solid rgba(245, 242, 234, 0.14);
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  border-radius: 14px;
  border: 1px solid rgba(168, 242, 220, 0.28);
  background: rgba(63, 224, 180, 0.08);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.nav-toggle:hover { background: rgba(63, 224, 180, 0.18); }

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--mint-soft);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle__bars { position: relative; }

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-6px) rotate(-45deg); }

/* 阅读进度线 */
.site-header__progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--signal-red), var(--neon-mint));
  pointer-events: none;
}

/* ============================================================
   右侧赛程轨道
   ============================================================ */
.rail { display: none; }

.rail__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.rail__title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--mint-soft);
}

.rail__toggle {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  border: 1px solid rgba(63, 224, 180, 0.3);
  background: rgba(63, 224, 180, 0.08);
}

.rail__toggle-bars,
.rail__toggle-bars::before {
  display: block;
  width: 12px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon-mint);
}

.rail__toggle-bars { position: relative; }

.rail__toggle-bars::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
}

.rail__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-block-start: 12px;
  overflow-y: auto;
  padding-block-end: 4px;
}

.rail__list {
  display: grid;
  gap: 6px;
}

.rail__item {
  display: grid;
  gap: 2px;
  padding: 9px 8px;
  border-radius: var(--radius-sm);
  background: rgba(245, 242, 234, 0.05);
  border: 1px solid rgba(63, 224, 180, 0.12);
}

.rail__league {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--paper);
  line-height: 1.3;
}

.rail__span {
  font-family: var(--font-mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
  color: rgba(168, 242, 220, 0.72);
}

.rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(245, 242, 234, 0.32);
}

.rail__dot--live { background: var(--neon-mint); }

.rail__foot {
  margin-block-start: auto;
  padding-block-start: 10px;
  border-block-start: 1px solid rgba(63, 224, 180, 0.16);
}

.rail__shortcut {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 40px;
  border-radius: var(--pill);
  background: var(--signal-red);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
}

.rail__shortcut:hover { background: var(--deep-red); }

.rail__path {
  position: fixed;
  right: calc(var(--rail-gutter) + 10px);
  bottom: 24px;
  z-index: 90;
  width: 236px;
  padding: 18px;
  border-radius: var(--radius-md);
  background: var(--paper);
  color: var(--charcoal);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.rail__path-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--deep-red);
}

.rail__steps {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-block: 10px 14px;
  font-size: 13px;
  font-weight: 700;
}

.rail__steps li {
  padding: 5px 10px;
  border-radius: var(--pill);
  background: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.rail__steps li + li::before {
  content: "→";
  position: absolute;
  margin-inline-start: -20px;
  font-family: var(--font-body);
  color: var(--slate);
}

.rail__steps li + li { position: relative; padding-inline-start: 22px; }

.rail__path-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  width: 100%;
  border-radius: var(--pill);
  background: var(--pitch-green);
  color: var(--mint-soft);
  font-size: 13px;
  font-weight: 700;
}

.rail__path-link:hover { background: var(--ink); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid rgba(63, 224, 180, 0.16);
  background-image:
    radial-gradient(80% 60% at 100% 0%, rgba(63, 224, 180, 0.10), transparent 60%),
    radial-gradient(70% 50% at 0% 100%, rgba(217, 36, 43, 0.12), transparent 62%);
  background-repeat: no-repeat;
}

.site-footer__inner {
  padding-block: clamp(44px, 6vw, 76px) 26px;
}

.site-footer__top {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  grid-template-columns: 1fr;
}

.footer-brand {
  display: grid;
  gap: 14px;
  align-content: start;
  max-width: 32ch;
}

.footer-brand__note {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  color: rgba(168, 242, 220, 0.72);
}

.footer-col {
  display: grid;
  gap: 14px;
  align-content: start;
}

.footer-col__title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--mint-soft);
  padding-block-end: 10px;
  border-block-end: 1px solid rgba(168, 242, 220, 0.22);
}

.footer-list {
  display: grid;
  gap: 4px;
  font-size: 14px;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding-block: 4px;
  color: rgba(245, 242, 234, 0.8);
  transition: color var(--dur) var(--ease);
}

.footer-list a:hover { color: var(--neon-mint); }

.footer-list--plain { gap: 10px; }

.footer-list--plain li {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(245, 242, 234, 0.78);
}

.footer-list__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(168, 242, 220, 0.66);
}

.site-footer__meta {
  display: grid;
  gap: 10px 26px;
  margin-block-start: clamp(30px, 4vw, 46px);
  padding-block: 16px;
  border-block: 1px solid rgba(168, 242, 220, 0.16);
}

.meta-fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  font-size: 13px;
}

.meta-fact__key {
  font-family: var(--font-serif);
  font-size: 13px;
  color: rgba(245, 242, 234, 0.6);
}

.meta-fact__value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--neon-mint);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-block-start: 20px;
}

.site-footer__legal {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  line-height: 1.7;
  color: rgba(245, 242, 234, 0.62);
}

/* ============================================================
   通用内容组件
   ============================================================ */
.card {
  padding: clamp(20px, 3vw, 32px);
  border-radius: var(--radius-lg);
  background: var(--pitch-green);
  border: 1px solid rgba(63, 224, 180, 0.18);
  color: var(--paper);
}

.card--paper {
  background: var(--paper);
  border-color: var(--paper-dim);
  color: var(--charcoal);
}

.card--pitch {
  background: linear-gradient(160deg, var(--pitch-green), var(--ink));
}

.card__title {
  font-size: clamp(20px, 2.2vw, 26px);
  margin-block-end: 10px;
}

.card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: rgba(168, 242, 220, 0.76);
}

.card--paper .card__meta { color: var(--slate); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
  white-space: nowrap;
}

.pill--red { background: var(--signal-red); color: var(--paper); }

.pill--mint {
  background: rgba(63, 224, 180, 0.16);
  border-color: rgba(63, 224, 180, 0.42);
  color: var(--mint-soft);
}

.pill--outline {
  background: transparent;
  border-color: var(--paper-dim);
  color: var(--slate);
}

.stat { display: grid; gap: 4px; }

.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 72px);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--neon-mint);
}

.stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(245, 242, 234, 0.7);
}

.card--paper .stat__label,
.section--paper .stat__label { color: var(--slate); }

.section--paper .stat__value { color: var(--deep-red); }

/* 图片容器基础规则（页面阶段放 <img class="media__inner">） */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(63, 224, 180, 0.18);
  background-color: var(--pitch-green);
  background-image:
    radial-gradient(120% 90% at 82% 0%, rgba(63, 224, 180, 0.20), transparent 62%),
    repeating-linear-gradient(90deg, rgba(245, 242, 234, 0.07) 0 1px, transparent 1px 64px),
    linear-gradient(160deg, #0E2B24, #15181A 72%);
}

.media--wide { aspect-ratio: 16 / 9; }

.media__inner {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 数据表 */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--paper-dim);
  background: var(--paper);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 460px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--charcoal);
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  border-block-end: 1px solid var(--paper-dim);
}

.data-table thead th {
  position: sticky;
  top: 0;
  background: var(--pitch-green);
  color: var(--mint-soft);
  font-family: var(--font-body);
  font-weight: 700;
}

.data-table tbody th:first-child,
.data-table tbody td:first-child {
  position: sticky;
  left: 0;
  background: var(--paper);
  font-family: var(--font-body);
  font-weight: 700;
}

/* 标签页 */
.tabs { display: grid; gap: 22px; }

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  border-radius: var(--pill);
  background: rgba(245, 242, 234, 0.06);
  border: 1px solid rgba(63, 224, 180, 0.16);
  width: fit-content;
  max-width: 100%;
}

.tab {
  min-height: 44px;
  padding: 9px 18px;
  border-radius: var(--pill);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: rgba(245, 242, 234, 0.76);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.tab:hover { color: var(--paper); background: rgba(63, 224, 180, 0.14); }

.tab[aria-selected="true"] {
  background: var(--signal-red);
  color: var(--paper);
}

.tabpanel {
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 32px);
  background: var(--pitch-green);
  border: 1px solid rgba(63, 224, 180, 0.18);
}

.tabpanel[hidden] { display: none; }

.section--paper .tabpanel {
  background: var(--paper);
  border-color: var(--paper-dim);
  color: var(--charcoal);
}

/* 面包屑与内链 */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: rgba(245, 242, 234, 0.66);
}

.section--paper .breadcrumbs { color: var(--slate); }

.breadcrumbs__item { display: inline-flex; align-items: center; gap: 8px; }

.breadcrumbs__item a {
  padding-block: 4px;
  border-block-end: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.breadcrumbs__item a:hover {
  color: var(--neon-mint);
  border-block-end-color: var(--neon-mint);
}

.breadcrumbs__sep { color: rgba(168, 242, 220, 0.5); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-weight: 700;
  color: var(--neon-mint);
  transition: gap var(--dur) var(--ease), color var(--dur) var(--ease);
}

.link-arrow::after { content: "→"; }

.link-arrow:hover { gap: 14px; color: var(--mint-soft); }

.section--paper .link-arrow { color: var(--deep-red); }

/* ============================================================
   响应式：平板与手机
   ============================================================ */
@media (max-width: 1080px) {
  .site-nav__list { gap: 0; }
  .site-nav__link { padding: 0 11px; font-size: 14px; }
  .site-nav__actions { padding-inline-start: 8px; margin-inline-start: 6px; }
  .site-nav__actions .btn--ghost { display: none; }
}

@media (max-width: 959px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 120;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "list"
      "actions";
    gap: 18px;
    max-height: 86vh;
    overflow-y: auto;
    margin: 0;
    padding: 22px 20px calc(22px + env(safe-area-inset-bottom));
    border-top-left-radius: 26px;
    border-top-right-radius: 26px;
    border: 1px solid rgba(63, 224, 180, 0.22);
    border-bottom: 0;
    background: var(--charcoal);
    box-shadow: 0 -28px 70px rgba(0, 0, 0, 0.62);
    transform: translateY(112%);
    transition: transform var(--dur) var(--ease);
  }

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

  .site-nav__brand {
    grid-area: brand;
    display: grid;
    gap: 4px;
    padding: 16px 18px;
    border-radius: var(--radius-md);
    background: var(--pitch-green);
    border: 1px solid rgba(63, 224, 180, 0.24);
  }

  .site-nav__brand-name {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 900;
    letter-spacing: -0.02em;
  }

  .site-nav__brand-note {
    font-size: 12px;
    color: rgba(168, 242, 220, 0.76);
  }

  .site-nav__list {
    grid-area: list;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    justify-content: stretch;
  }

  .site-nav__link {
    width: 100%;
    min-height: 52px;
    justify-content: flex-start;
    padding: 0 16px;
    border-radius: var(--radius-sm);
    border-color: rgba(245, 242, 234, 0.12);
    font-size: 16px;
    color: rgba(245, 242, 234, 0.86);
  }

  .site-nav__link[aria-current="page"] { border-color: var(--signal-red); }

  .site-nav__actions {
    grid-area: actions;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
    border: 0;
  }

  .site-nav__actions .btn { flex: 1 1 140px; }
  .site-nav__actions .btn--ghost { display: inline-flex; }

  html.nav-open { overflow: hidden; }
}

@media (min-width: 600px) and (max-width: 959px) {
  .site-nav {
    grid-template-columns: 210px minmax(0, 1fr);
    grid-template-areas:
      "brand list"
      "brand actions";
    align-items: start;
  }
}

@media (max-width: 560px) {
  .site-header__inner { min-height: 66px; gap: 12px; }
  .brand__mark { width: 38px; height: 38px; font-size: 20px; border-radius: 12px; }
  .brand__name { font-size: 17px; }
  .brand__tagline { font-size: 11px; }
  .site-footer__bottom { flex-direction: column; }
}

@media (min-width: 720px) {
  .site-footer__top { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
  .site-footer__meta { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .site-footer__top { grid-template-columns: 1.4fr 0.9fr 0.9fr 1.4fr; }
  .footer-col--contact { grid-column: auto; }
}

@media (min-width: 1200px) {
  :root { --rail-gutter: 92px; }
  html.rail-collapsed { --rail-gutter: 46px; }

  .rail {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 55;
    width: var(--rail-gutter);
    padding: 16px 12px;
    background: linear-gradient(180deg, var(--pitch-green), var(--ink) 78%);
    border-inline-start: 1px solid rgba(63, 224, 180, 0.18);
    color: var(--mint-soft);
    transition: width var(--dur) var(--ease), padding var(--dur) var(--ease);
  }

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

  .rail__title { writing-mode: vertical-rl; letter-spacing: 0.3em; }

  html.rail-collapsed .rail { padding: 16px 7px; align-items: center; }
  html.rail-collapsed .rail__title { display: none; }
  html.rail-collapsed .rail__body { display: none; }
  html.rail-collapsed .rail__head { flex-direction: column; }

  .rail__path { right: calc(var(--rail-gutter) + 12px); }
}

/* ---------- 动效降级 ---------- */
@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;
  }

  .site-nav { transition: none; }
  .site-header__progress { transition: none; }
}