/* =========================================================
   8868体育 · Site Kit 共享样式
   作用域：全站共享 — 页头/页脚/基础组件
   ========================================================= */

/* ---------- 01. 变量与重置 ---------- */
:root {
  /* 品牌色板 */
  --bg-primary: #0A1F24;
  --bg-card: #1D3B40;
  --bg-glass: rgba(29, 59, 64, 0.55);
  --bg-glass-strong: rgba(29, 59, 64, 0.85);
  --accent-green: #C8F04B;
  --accent-orange: #FF7A00;
  --text-light: #F5F5F0;
  --text-dim: #B8D9D4;
  --accent-deep: #803D22;
  --warn: #E04E2A;

  /* 字体 */
  --font-display: 'Archivo Black', 'Arial Black', 'PingFang SC', 'Microsoft YaHei', 'Heiti SC', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 字号阶梯 */
  --fs-hero: clamp(3rem, 10vw, 7rem);
  --fs-section: clamp(2rem, 5vw, 3.5rem);
  --fs-subtitle: 1.5rem;
  --fs-body: 1rem;
  --fs-micro: 0.75rem;

  /* 布局 */
  --container: 1200px;
  --container-wide: 1440px;
  --container-pad: clamp(20px, 4vw, 40px);
  --header-h: 72px;
  --topbar-h: 36px;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --speed: 0.3s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-light);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
}

ul,
ol {
  padding-left: 1.5em;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

/* ---------- 02. 可访问性 ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 3000;
  padding: 10px 24px;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-size: 0.875rem;
  font-weight: 800;
  font-family: var(--font-display);
  text-decoration: none;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: top 0.3s var(--ease);
}

.skip-link:focus-visible {
  top: 16px;
}

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

::selection {
  background: var(--accent-green);
  color: var(--bg-primary);
}

/* ---------- 03. 容器与排版 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--narrow {
  max-width: 46rem;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + var(--topbar-h) + 12px);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
  color: var(--text-light);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

/* ---------- 04. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.site-header[data-scrolled] {
  background: var(--bg-primary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange), transparent 85%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.6s var(--ease);
  pointer-events: none;
}

.site-header[data-scrolled]::after {
  transform: scaleX(1);
}

/* 滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 2000;
  pointer-events: none;
}

/* 顶部快捷栏 */
.topbar {
  position: relative;
  background: rgba(10, 31, 36, 0.68);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(184, 217, 212, 0.12);
  transition: background var(--speed) var(--ease);
  overflow: hidden;
}

.topbar::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 100%;
  background: linear-gradient(115deg, transparent 42%, rgba(200, 240, 75, 0.08) 50%, transparent 58%);
  pointer-events: none;
}

.site-header[data-scrolled] .topbar {
  background: rgba(10, 31, 36, 0.88);
}

.topbar__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--topbar-h);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.topbar__zone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.topbar__zone::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(200, 240, 75, 0.6);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.topbar__link {
  color: var(--text-dim);
  text-decoration: none;
  padding: 3px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--speed), border-color var(--speed);
  font-weight: 500;
}

.topbar__link:hover {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

.topbar__btn {
  display: inline-flex;
  align-items: center;
  padding: 3px 14px;
  background: var(--accent-green);
  color: var(--bg-primary);
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 999px;
  transition: background var(--speed), transform var(--speed), box-shadow var(--speed);
  box-shadow: 0 0 0 rgba(200, 240, 75, 0);
}

.topbar__btn:hover {
  background: var(--accent-orange);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 122, 0, 0.25);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-light);
  flex-shrink: 0;
}

.brand__mark {
  width: 34px;
  height: 34px;
  fill: var(--accent-green);
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px rgba(200, 240, 75, 0.25));
  transition: filter var(--speed);
}

.brand:hover .brand__mark {
  filter: drop-shadow(0 0 10px rgba(200, 240, 75, 0.5));
}

.brand__text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-light);
  white-space: nowrap;
}

.brand__text span {
  color: var(--accent-green);
}

.brand--footer .brand__mark {
  fill: var(--accent-orange);
  filter: drop-shadow(0 0 6px rgba(255, 122, 0, 0.2));
}

.brand--footer:hover .brand__mark {
  filter: drop-shadow(0 0 12px rgba(255, 122, 0, 0.4));
}

.brand--footer .brand__text span {
  color: var(--accent-orange);
}

/* 主栏 */
.site-header__bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
  padding-top: 8px;
  padding-bottom: 8px;
}

/* 主导航 */
.site-nav__list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2px;
  padding-left: 0;
}

.site-nav__link {
  position: relative;
  display: block;
  padding: 10px 15px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text-light);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--speed);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 5px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  border-radius: 2px;
  transform: scaleX(0) skewX(-35deg);
  transform-origin: left center;
  transition: transform var(--speed) var(--ease);
}

.site-nav__link:hover {
  color: var(--accent-green);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1) skewX(-35deg);
}

.site-nav__link[aria-current="page"] {
  color: var(--accent-green);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(200, 240, 75, 0.35);
  border-radius: 8px;
  cursor: pointer;
  transition: border-color var(--speed), background var(--speed);
}

.nav-toggle:hover {
  border-color: var(--accent-green);
  background: rgba(200, 240, 75, 0.06);
}

.nav-toggle__line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--accent-green);
  border-radius: 2px;
  transition: transform 0.32s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0.3);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 返回顶部 */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid rgba(200, 240, 75, 0.35);
  border-radius: 999px;
  background: rgba(10, 31, 36, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--accent-green);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease), visibility 0s linear var(--speed), background var(--speed) var(--ease);
}

.back-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.back-top:hover {
  background: var(--accent-green);
  color: var(--bg-primary);
  border-color: var(--accent-green);
}

.back-top__icon {
  width: 18px;
  height: 18px;
}

.back-top__label {
  line-height: 1;
  font-family: var(--font-display);
  font-size: 0.75rem;
}

/* ---------- 05. 页脚 ---------- */
.site-footer {
  position: relative;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 85% 0%, rgba(200, 240, 75, 0.05) 0%, transparent 55%),
    radial-gradient(ellipse at 10% 100%, rgba(255, 122, 0, 0.04) 0%, transparent 55%),
    linear-gradient(180deg, var(--bg-primary) 0%, #050D0F 100%);
  padding-top: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-green), var(--accent-orange), transparent);
  opacity: 0.75;
  z-index: 1;
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0px,
    transparent 42px,
    rgba(200, 240, 75, 0.018) 42px,
    rgba(200, 240, 75, 0.018) 43px
  );
  pointer-events: none;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
}

.site-footer__top {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.5rem, 3vw, 2rem) clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid rgba(184, 217, 212, 0.1);
}

.footer-brand {
  grid-column: span 4;
}

.footer-columns {
  grid-column: span 5;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 2vw, 2rem);
}

.footer-aside {
  grid-column: span 3;
}

.footer-brand__slogan {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--accent-green);
  margin-top: 12px;
}

.footer-brand__note {
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 21em;
}

.footer-column__title {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-orange);
  margin-bottom: 14px;
}

.footer-column__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 0;
}

.footer-column__link {
  display: inline-block;
  padding: 3px 0;
  font-size: 0.875rem;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--speed), border-color var(--speed), transform var(--speed);
}

.footer-column__link:hover {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
  transform: translateX(3px);
}

.footer-aside__item {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-dim);
}

.footer-aside__item + .footer-aside__item {
  margin-top: 8px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 18px 0 26px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: rgba(184, 217, 212, 0.55);
}

.site-footer__icp {
  letter-spacing: 0.08em;
  padding-left: 10px;
  border-left: 1px solid rgba(184, 217, 212, 0.2);
}

.site-footer__address {
  margin-left: auto;
}

/* ---------- 06. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 28px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--speed) var(--ease);
}

.btn:active {
  transform: translateY(2px) scale(0.98);
}

.btn--primary {
  background: var(--accent-green);
  color: var(--bg-primary);
  box-shadow: 0 4px 18px rgba(200, 240, 75, 0.2);
}

.btn--primary:hover {
  background: transparent;
  border-color: var(--accent-green);
  color: var(--accent-green);
  box-shadow: none;
}

.btn--secondary {
  background: var(--accent-orange);
  color: var(--bg-primary);
  box-shadow: 0 4px 18px rgba(255, 122, 0, 0.18);
}

.btn--secondary:hover {
  background: transparent;
  border-color: var(--accent-orange);
  color: var(--accent-orange);
  box-shadow: none;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(200, 240, 75, 0.45);
  color: var(--accent-green);
}

.btn--ghost:hover {
  background: rgba(200, 240, 75, 0.08);
  border-color: var(--accent-green);
}

/* ---------- 07. 分区与标题 ---------- */
.section {
  position: relative;
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section-head {
  max-width: 44rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-section);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-light);
}

.section-title::before {
  content: "";
  display: inline-block;
  width: 0.34em;
  height: 0.34em;
  margin-right: 0.28em;
  background: var(--accent-green);
  transform: translateY(-0.08em) skewX(-18deg);
  border-radius: 2px;
}

.section-subtitle {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 38em;
}

/* ---------- 08. 面包屑 ---------- */
.breadcrumbs {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.breadcrumbs__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-left: 0;
  font-size: 0.8125rem;
  color: var(--text-dim);
}

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

.breadcrumbs__item:not(:last-child)::after {
  content: "/";
  color: rgba(184, 217, 212, 0.35);
  font-size: 0.75rem;
}

.breadcrumbs__link {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--speed);
}

.breadcrumbs__link:hover {
  color: var(--accent-green);
}

.breadcrumbs__current {
  color: var(--text-light);
  font-weight: 600;
}

/* ---------- 09. 卡片与标签 ---------- */
.glass-card {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid rgba(184, 217, 212, 0.14);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  opacity: 0.65;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  border: 1px solid rgba(184, 217, 212, 0.12);
  transition: border-color var(--speed), transform var(--speed), box-shadow var(--speed);
}

.card:hover {
  border-color: rgba(200, 240, 75, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.25);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem);
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.tag--green {
  background: rgba(200, 240, 75, 0.12);
  color: var(--accent-green);
  border-color: rgba(200, 240, 75, 0.32);
}

.tag--orange {
  background: rgba(255, 122, 0, 0.12);
  color: var(--accent-orange);
  border-color: rgba(255, 122, 0, 0.32);
}

/* ---------- 10. 数据指标 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}

.stat-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem;
  text-align: center;
  border: 1px solid rgba(184, 217, 212, 0.1);
  transition: border-color var(--speed), transform var(--speed), box-shadow var(--speed);
}

.stat-item:hover {
  border-color: var(--accent-green);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}

.stat-item__value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--accent-green);
  line-height: 1.15;
}

.stat-item__label {
  margin-top: 4px;
  font-size: 0.8125rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* ---------- 11. 布局工具 ---------- */
.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.content-grid__aside {
  position: sticky;
  top: calc(var(--header-h) + var(--topbar-h) + 24px);
}

.prose {
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-light);
  margin: 2.4em 0 0.7em;
  line-height: 1.25;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-light);
  margin: 2em 0 0.5em;
}

.prose p {
  margin-bottom: 1.25em;
}

.prose a {
  color: var(--accent-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 240, 75, 0.35);
  transition: border-color var(--speed);
}

.prose a:hover {
  border-bottom-color: var(--accent-green);
}

.prose ul,
.prose ol {
  margin-bottom: 1.25em;
  padding-left: 1.6em;
}

.prose li {
  margin-bottom: 0.375em;
}

.prose blockquote {
  border-left: 3px solid var(--accent-orange);
  padding-left: 1.25em;
  margin: 1.5em 0;
  color: var(--text-light);
  font-style: italic;
}

.prose strong {
  color: var(--text-light);
  font-weight: 600;
}

/* ---------- 12. 图片占位基础 ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  background-color: var(--bg-card);
  background-image:
    linear-gradient(135deg, rgba(200, 240, 75, 0.05) 0%, transparent 40%, rgba(255, 122, 0, 0.05) 100%);
  overflow: hidden;
  border-radius: var(--radius-md);
  isolation: isolate;
}

.img-frame::before {
  content: "";
  display: block;
}

.img-frame--16-9::before {
  padding-bottom: 56.25%;
}

.img-frame--4-3::before {
  padding-bottom: 75%;
}

.img-frame--wide::before {
  padding-bottom: 40.625%;
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0px,
    transparent 14px,
    rgba(200, 240, 75, 0.04) 14px,
    rgba(200, 240, 75, 0.04) 15px
  );
}

/* ---------- 13. 装饰元素 ---------- */
.diag-stripes {
  position: relative;
  overflow: hidden;
}

.diag-stripes::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0px,
    transparent 26px,
    rgba(200, 240, 75, 0.05) 26px,
    rgba(200, 240, 75, 0.05) 27px
  );
  pointer-events: none;
  z-index: 0;
}

.diag-stripes > * {
  position: relative;
  z-index: 1;
}

.section-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: clamp(2rem, 5vw, 3.5rem) 0;
  color: var(--accent-green);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-divider::before {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, rgba(200, 240, 75, 0.35));
}

.section-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, rgba(200, 240, 75, 0.35), transparent);
}

/* ---------- 14. 内页首屏基础 ---------- */
.page-hero {
  position: relative;
  padding: clamp(4.5rem, 9vw, 7.5rem) 0 clamp(2.5rem, 5vw, 4rem);
  overflow: hidden;
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text-light);
  max-width: 12em;
}

.page-hero__subtitle {
  margin-top: 14px;
  max-width: 36rem;
  color: var(--text-dim);
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.6;
}

/* ---------- 15. 显现动画 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.js-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.08s;
}

.reveal-delay-2 {
  transition-delay: 0.16s;
}

.reveal-delay-3 {
  transition-delay: 0.24s;
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 991px) {
  .content-grid {
    grid-template-columns: 1fr;
  }

  .content-grid__aside {
    position: static;
  }

  .footer-brand {
    grid-column: span 12;
  }

  .footer-columns {
    grid-column: span 7;
  }

  .footer-aside {
    grid-column: span 5;
  }

  /* 移动导航 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: calc(-1 * var(--container-pad));
    right: calc(-1 * var(--container-pad));
    background: var(--bg-primary);
    border-top: 1px solid rgba(200, 240, 75, 0.16);
    border-bottom: 1px solid rgba(200, 240, 75, 0.16);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.35);
    padding: 12px var(--container-pad) 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0s linear 0.28s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.28s var(--ease), transform 0.28s var(--ease);
    max-height: calc(100vh - var(--topbar-h) - var(--header-h));
    overflow-y: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__item + .site-nav__item {
    border-top: 1px solid rgba(184, 217, 212, 0.08);
  }

  .site-nav__link {
    padding: 14px 8px;
    font-size: 0.9375rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link:hover {
    color: var(--accent-green);
    padding-left: 16px;
    background: rgba(200, 240, 75, 0.05);
  }

  .site-nav__link[aria-current="page"] {
    color: var(--accent-green);
    background: rgba(200, 240, 75, 0.06);
  }
}

@media (max-width: 767px) {
  .footer-columns {
    grid-column: span 12;
  }

  .footer-aside {
    grid-column: span 12;
  }

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

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .site-footer__address {
    margin-left: 0;
  }

  .site-footer__icp {
    padding-left: 0;
    border-left: none;
  }

  .back-top {
    bottom: 20px;
    right: 20px;
    padding: 10px 14px;
  }

  .back-top__label {
    display: none;
  }

  .back-top__icon {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 575px) {
  :root {
    --header-h: 60px;
    --topbar-h: 32px;
  }

  .topbar__zone {
    display: none;
  }

  .topbar__actions {
    gap: 12px;
  }

  .topbar__link {
    font-size: 0.7rem;
  }

  .topbar__btn {
    padding: 2px 12px;
    font-size: 0.68rem;
  }

  .brand__text {
    font-size: 1.2rem;
  }

  .brand__mark {
    width: 30px;
    height: 30px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .footer-column {
    border-bottom: 1px solid rgba(184, 217, 212, 0.08);
    padding-bottom: 1rem;
  }

  .footer-column:last-child {
    border-bottom: none;
  }
}

/* ---------- 17. 偏好降级 ---------- */
@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;
  }

  .js-ready [data-reveal],
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .back-top,
  .skip-link,
  .site-nav,
  .nav-toggle__line {
    transition: none;
  }
}