/* =========================================================
   贝博艾弗森体育 — 全站共享样式
   File: /assets/site.css
   ========================================================= */

/* ---------- CSS 变量 ---------- */
:root {
  --color-navy: #0A1F44;
  --color-navy-deep: #0D2B5B;
  --color-orange: #FF6B35;
  --color-gold: #FFD700;
  --color-offwhite: #F7F9FC;
  --color-white: #FFFFFF;
  --color-ink: #1A1A1A;
  --color-green: #00C48C;
  --color-red: #FF3B30;

  --font-display: 'Montserrat', 'Microsoft YaHei', sans-serif;
  --font-body: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  --font-mono: 'Roboto Mono', 'SFMono-Regular', Consolas, monospace;

  --container-w: 1200px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
}

/* ---------- Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-ink);
  background: var(--color-offwhite);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  list-style: none;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.25;
}

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

#main-content {
  flex: 1;
  width: 100%;
  outline: none;
}

body.nav-lock {
  overflow: hidden;
}

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

/* ---------- 通用容器 ---------- */
.container {
  width: min(var(--container-w), 92%);
  margin-inline: auto;
}

.content-block {
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section-block {
  padding-block: var(--space-6);
}

.section-block--tight {
  padding-block: var(--space-4);
}

/* ---------- 通用栅格 ---------- */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid--2col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4col {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split-screen {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-5);
}

/* ---------- 头部：数据跑马灯 ---------- */
.site-header {
  position: relative;
  z-index: 50;
  background: var(--color-navy);
  color: var(--color-white);
}

.site-header__progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 1100;
  background: var(--color-gold);
  pointer-events: none;
}

.site-header__data {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.4rem var(--space-4);
  overflow: hidden;
  white-space: nowrap;
  background: var(--color-navy-deep);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__data-dot {
  flex-shrink: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

.site-header__data-item {
  flex-shrink: 0;
}

.site-header__data-sep {
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-white);
  opacity: 0.3;
}

.site-header__data-item--hide-sm {
  display: none;
}

/* ---------- 头部：杂志报头 ---------- */
.site-header__mast {
  position: relative;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  justify-content: center;
  align-items: center;
}

.site-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.15rem;
  transition: opacity 0.2s ease;
}

.site-brand:hover {
  opacity: 0.86;
}

.site-brand__kicker {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.1rem;
}

.site-brand__cn {
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1.2;
  color: var(--color-white);
}

.site-brand__divider {
  width: 42px;
  height: 2px;
  margin: 0.28rem auto;
  background: var(--color-orange);
}

.site-brand__en {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

.site-header__edition {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  text-align: right;
  border-right: 2px solid var(--color-orange);
  padding-right: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.site-header__edition-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-gold);
  letter-spacing: 0.12em;
}

.site-header__edition-meta {
  font-size: 0.66rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.14em;
}

.site-header__bang {
  height: 4px;
  background: repeating-linear-gradient(
    -45deg,
    var(--color-orange) 0,
    var(--color-orange) 12px,
    var(--color-gold) 12px,
    var(--color-gold) 18px,
    var(--color-navy-deep) 18px,
    var(--color-navy-deep) 28px
  );
}

/* ---------- 头部：主导航 ---------- */
.site-nav {
  width: 100%;
  background: var(--color-navy-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 0 var(--space-3);
}

.site-nav__item {
  position: relative;
}

.site-nav__item + .site-nav__item::before {
  content: '/';
  position: absolute;
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-orange);
  opacity: 0.35;
  pointer-events: none;
  z-index: 1;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.4rem;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s ease, background 0.2s ease;
}

.site-nav__link::before {
  content: '';
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  background: var(--color-orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.06);
}

.site-nav__link:hover::before,
.site-nav__link[aria-current="page"]::before {
  opacity: 1;
  transform: scale(1);
}

/* ---------- 头部：移动导航按钮 ---------- */
.nav-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  display: none;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.05);
  z-index: 60;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--color-orange);
  background: rgba(255, 255, 255, 0.1);
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 18px;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-toggle__label {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.75);
  letter-spacing: 0.08em;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:first-child {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  left: var(--space-3);
  top: -100px;
  z-index: 1200;
  background: var(--color-orange);
  color: var(--color-white);
  padding: 0.6rem 1.2rem;
  border-radius: 0 0 8px 8px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: 0 6px 20px rgba(10, 31, 68, 0.3);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

/* ---------- 悬浮快捷入口 ---------- */
.quick-support {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 900;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.3rem;
  border-radius: 999px;
  background: var(--color-orange);
  color: var(--color-white);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.38);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.quick-support:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(255, 107, 53, 0.5);
  background: #e85d28;
}

.quick-support__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-white);
  color: var(--color-orange);
  font-weight: 900;
  font-size: 0.8rem;
  line-height: 1;
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--color-navy-deep);
  color: rgba(255, 255, 255, 0.75);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 32%;
  height: 100%;
  pointer-events: none;
  background: repeating-linear-gradient(
    135deg,
    transparent 0,
    transparent 14px,
    rgba(255, 107, 53, 0.04) 14px,
    rgba(255, 107, 53, 0.04) 28px
  );
}

.site-footer__signal {
  position: relative;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--color-orange) 0%,
    var(--color-orange) 22%,
    var(--color-gold) 22%,
    var(--color-gold) 34%,
    var(--color-navy) 34%,
    var(--color-navy) 44%,
    var(--color-orange) 44%,
    var(--color-orange) 66%,
    var(--color-gold) 66%,
    var(--color-gold) 78%,
    var(--color-navy-deep) 78%,
    var(--color-navy-deep) 100%
  );
}

.site-footer__inner {
  position: relative;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: var(--space-6) var(--space-4) var(--space-5);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.5fr;
  gap: var(--space-5);
}

.site-footer__col {
  min-width: 0;
}

.site-footer__brand-cn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--color-white);
  transition: color 0.2s ease;
}

.site-footer__brand-cn:hover {
  color: var(--color-gold);
}

.site-footer__brand-en {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-top: 0.35rem;
}

.site-footer__slogan {
  margin-top: 1rem;
  font-size: 0.8rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
}

.site-footer__version {
  display: inline-block;
  margin-top: 0.7rem;
  padding: 0.28rem 0.6rem;
  border-radius: 3px;
  background: var(--color-orange);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--color-navy);
}

.site-footer__heading {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.site-footer__heading::before {
  content: '';
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  background: var(--color-orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.site-footer__links a {
  display: inline-block;
  position: relative;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.82rem;
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.site-footer__links a::before {
  content: '→';
  position: absolute;
  left: -14px;
  top: 0;
  color: var(--color-orange);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.site-footer__links a:hover {
  color: var(--color-orange);
  padding-left: 8px;
}

.site-footer__links a:hover::before {
  opacity: 1;
}

.site-footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.site-footer__contact-item {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
}

.site-footer__contact-label {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-orange);
  padding-top: 0.08rem;
  min-width: 36px;
}

.site-footer__bottom {
  position: relative;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 1.2rem var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer__copyright {
  letter-spacing: 0.04em;
}

.site-footer__icp {
  letter-spacing: 0.02em;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn--primary {
  background: var(--color-orange);
  color: var(--color-white);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  background: #e85d28;
  box-shadow: 0 12px 30px rgba(255, 107, 53, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}

.btn--ghost:hover {
  background: var(--color-navy);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--gold {
  background: var(--color-gold);
  color: var(--color-navy);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.25);
}

.btn--gold:hover {
  transform: translateY(-2px);
  background: #ffdd22;
  box-shadow: 0 12px 30px rgba(255, 215, 0, 0.35);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  padding: 0.24rem 0.7rem;
  border-radius: 999px;
  background: rgba(10, 31, 68, 0.07);
  color: var(--color-navy);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.tag--gold {
  background: var(--color-gold);
  color: var(--color-navy);
}

.tag--orange {
  background: var(--color-orange);
  color: var(--color-white);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: var(--space-2) 0;
  font-size: 0.8rem;
  color: #6a7280;
}

.breadcrumb a {
  color: var(--color-navy);
  font-weight: 700;
  transition: color 0.15s ease;
}

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

.breadcrumb__sep::before {
  content: '/';
  color: var(--color-orange);
}

/* ---------- 页面标题区 ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-navy);
  color: var(--color-white);
  padding-block: var(--space-6) var(--space-4);
}

.page-hero::after {
  content: '';
  position: absolute;
  right: -6%;
  top: 50%;
  width: 24%;
  height: 220%;
  transform: rotate(18deg);
  background: var(--color-orange);
  opacity: 0.1;
  pointer-events: none;
}

.page-hero__inner {
  position: relative;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.page-hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: 0.03em;
  color: var(--color-white);
}

.page-hero__sub {
  max-width: 56ch;
  margin-top: 0.75rem;
  border-left: 4px solid var(--color-orange);
  padding-left: var(--space-3);
  color: rgba(255, 255, 255, 0.72);
}

.page-hero__meta {
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
}

/* ---------- 图像占位容器 ---------- */
.image-shell {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-deep) 100%);
  box-shadow: 0 10px 30px rgba(10, 31, 68, 0.18);
}

.image-shell::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 30%, rgba(255, 107, 53, 0.22) 50%, transparent 70%),
    radial-gradient(circle at 75% 28%, rgba(255, 215, 0, 0.2), transparent 45%),
    repeating-linear-gradient(135deg, transparent 0, transparent 10px, rgba(255, 255, 255, 0.05) 10px, rgba(255, 255, 255, 0.05) 20px);
}

.image-shell--portrait {
  aspect-ratio: 3 / 4;
}

.image-shell--wide {
  aspect-ratio: 21 / 9;
}

/* ---------- 普通卡片 ---------- */
.card {
  background: var(--color-white);
  border-radius: 12px;
  padding: var(--space-4);
  border-top: 4px solid var(--color-orange);
  box-shadow: 0 6px 24px rgba(10, 31, 68, 0.07);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 38px rgba(10, 31, 68, 0.12);
}

/* ---------- 数据数字 ---------- */
.statistical-number {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-navy);
  letter-spacing: -0.02em;
}

.statistical-number--orange {
  color: var(--color-orange);
}

.statistical-number--gold {
  color: var(--color-gold);
}

/* ---------- 正文容器 ---------- */
.prose {
  max-width: 65ch;
  font-size: 0.98rem;
  line-height: 1.9;
}

.prose p {
  margin-bottom: 1em;
}

.prose h2,
.prose h3 {
  margin-top: 1.8em;
  margin-bottom: 0.6em;
  color: var(--color-navy);
}

.prose ul,
.prose ol {
  padding-left: 1.2em;
  margin-bottom: 1em;
}

.prose li {
  margin-bottom: 0.4em;
}

/* ---------- 技能树（服务路径） ---------- */
.skill-tree {
  position: relative;
  padding-left: var(--space-5);
}

.skill-tree::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-orange) 0%, var(--color-gold) 100%);
}

.skill-tree__step {
  position: relative;
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: 12px;
  border-left: 4px solid var(--color-orange);
  box-shadow: 0 6px 20px rgba(10, 31, 68, 0.07);
}

.skill-tree__step::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-5) + 5px);
  top: var(--space-4);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-orange);
  box-shadow: 0 0 0 3px var(--color-offwhite);
}

.skill-tree__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-orange);
  letter-spacing: 0.08em;
}

.skill-tree__title {
  margin-top: 0.3rem;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--color-navy);
}

.skill-tree__desc {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: #555;
  line-height: 1.7;
}

/* ---------- 纵向注释 ---------- */
.vertical-note {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  color: var(--color-orange);
}

/* ---------- 贵州地域装饰辅助 ---------- */
.pattern-guizhou {
  background-image:
    radial-gradient(circle at 82% 20%, rgba(255, 215, 0, 0.12) 0%, transparent 42%),
    repeating-linear-gradient(45deg, transparent 0, transparent 12px, rgba(255, 107, 53, 0.05) 12px, rgba(255, 107, 53, 0.05) 24px);
}

/* ---------- 平板响应式 ---------- */
@media (max-width: 960px) {
  .grid--4col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5) var(--space-4);
  }
}

/* ---------- 移动端响应式 ---------- */
@media (max-width: 760px) {
  .section-block {
    padding-block: var(--space-5);
  }

  .grid--2col,
  .grid--3col {
    grid-template-columns: 1fr;
  }

  .site-header__data {
    gap: var(--space-2);
    padding-inline: var(--space-3);
    font-size: 0.62rem;
  }

  .site-header__data-item--hide-sm {
    display: inline;
  }

  .site-header__data-item:not(.site-header__data-item--hide-sm) {
    display: none;
  }

  .site-header__data-sep {
    display: none;
  }

  .site-header__mast {
    padding: var(--space-3);
  }

  .site-brand__kicker {
    font-size: 0.5rem;
    letter-spacing: 0.3em;
  }

  .site-brand__cn {
    font-size: 1.45rem;
  }

  .site-header__edition {
    display: none;
  }

  .site-header__bang {
    height: 3px;
  }

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

  .site-nav {
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    border-top: 0;
    transition: max-height 0.3s ease, visibility 0s linear 0.3s;
  }

  .site-nav[data-open="true"] {
    max-height: 80vh;
    visibility: visible;
    overflow-y: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transition: max-height 0.3s ease, visibility 0s;
  }

  .site-nav__list {
    flex-direction: column;
    padding: var(--space-2);
  }

  .site-nav__item + .site-nav__item::before {
    display: none;
  }

  .site-nav__link {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .site-footer__inner {
    padding: var(--space-5) var(--space-3) var(--space-4);
  }

  .site-footer__bottom {
    justify-content: center;
    text-align: center;
  }

  .quick-support {
    right: var(--space-3);
    bottom: var(--space-3);
    padding: 0.7rem 1rem;
  }

  .quick-support__text {
    font-size: 0.78rem;
  }

  .page-hero {
    padding-block: var(--space-5) var(--space-3);
  }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .site-nav,
  .site-nav[data-open="true"] {
    transition: none;
  }
}