/* ============================================================
   浩瀚体育 · 全局共享样式
   保存路径 /assets/site.css
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-night);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  color: inherit;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
  margin: 0;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

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

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

button { cursor: pointer; }

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

/* ---------- 2. CSS 变量 ---------- */
:root {
  --color-night: #0B1B3F;
  --color-accent: #FF6B2C;
  --color-blue: #2F4F8F;
  --color-green: #1F8A70;
  --color-red: #C0392B;
  --color-ivory: #F2F0E9;
  --color-gray-blue: #B3C1DB;
  --color-warm-gray: #E8E5DD;
  --color-deep: #071228;

  --font-heading: 'Space Grotesk', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: system-ui, -apple-system, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'Roboto Mono', 'SF Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;

  --sidebar-width: 240px;
  --content-max: 1400px;
  --transition-fast: 200ms ease;
  --transition-medium: 300ms ease;

  --color-text-primary: var(--color-ivory);
  --color-text-secondary: var(--color-gray-blue);
}

/* ---------- 3. 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- 4. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  background-color: var(--color-accent);
  color: var(--color-night);
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 4px 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  transition: top var(--transition-fast);
}

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

@media (min-width: 1025px) {
  .skip-link {
    left: calc(var(--sidebar-width) + 1rem);
  }
}

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1.2;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

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

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-night);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: #FF8A5C;
  border-color: #FF8A5C;
  box-shadow: 0 4px 16px rgba(255, 107, 44, 0.35);
}

.btn-outline {
  border-color: rgba(255, 107, 44, 0.6);
  color: var(--color-accent);
  background-color: transparent;
}

.btn-outline:hover {
  background-color: rgba(255, 107, 44, 0.1);
  border-color: var(--color-accent);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1.0625rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ---------- 6. 桌面端整体骨架 ---------- */
@media (min-width: 1025px) {
  body {
    padding-left: var(--sidebar-width);
  }
}

/* ---------- 7. 站点头部 / 侧边轨道 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  width: var(--sidebar-width);
  background-color: var(--color-night);
  border-right: 1px solid var(--color-deep);
  color: var(--color-ivory);
  pointer-events: auto;
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 55%, transparent 55%);
  z-index: 2;
  pointer-events: none;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 5px,
    rgba(47, 79, 143, 0.15) 5px,
    rgba(47, 79, 143, 0.15) 7px
  );
  pointer-events: none;
}

.site-header__drawer {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 2.25rem 1.25rem 1.75rem;
  overflow-y: auto;
}

.site-header__brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
}

.brand__symbol {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.75rem;
  line-height: 1;
  color: var(--color-ivory);
  letter-spacing: -0.03em;
  position: relative;
}

.brand__symbol::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 70%;
  height: 3px;
  background: var(--color-accent);
  transform: skewX(-20deg);
  border-radius: 1px;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-gray-blue);
  letter-spacing: 0.08em;
}

/* 公告标签 */
.header-announcement {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(179, 193, 219, 0.15);
  border-left: 3px solid var(--color-accent);
  background: rgba(47, 79, 143, 0.2);
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-gray-blue);
}

.header-announcement__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.375rem;
}

/* 主导航 */
.site-nav {
  flex: 1;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: 2px;
  color: var(--color-gray-blue);
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.site-nav__link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: var(--color-accent);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-ivory);
  background: linear-gradient(90deg, rgba(255, 107, 44, 0.12) 0%, rgba(47, 79, 143, 0.2) 100%);
}

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

.site-nav__index {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--color-accent);
  opacity: 0.75;
  min-width: 1.5em;
}

.site-nav__link[aria-current="page"] .site-nav__index {
  opacity: 1;
}

/* 头部 CTA */
.header-cta {
  margin-top: auto;
}

/* 移动端汉堡按钮（桌面端隐藏） */
.nav-toggle {
  display: none;
}

/* 遮罩（桌面端隐藏） */
.nav-scrim {
  display: none;
}

/* ---------- 8. 移动端 / 抽屉导航 ---------- */
@media (max-width: 1024px) {
  .site-header {
    inset: 0;
    width: auto;
    background: transparent;
    border-right: none;
    display: block;
    pointer-events: none;
  }

  .site-header::before,
  .site-header::after {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1200;
    width: 48px;
    height: 48px;
    background-color: var(--color-night);
    border: 1px solid rgba(242, 240, 233, 0.25);
    border-radius: 4px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
    pointer-events: auto;
  }

  .nav-toggle__bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-ivory);
    border-radius: 1px;
    transition:
      transform var(--transition-fast),
      opacity var(--transition-fast);
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-header__drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 1100;
    width: min(320px, 85vw);
    height: 100vh;
    overflow-y: auto;
    padding: 4.5rem 1.5rem 2rem;
    background-color: var(--color-night);
    border-right: 1px solid var(--color-deep);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
    transform: translateX(-100%);
    visibility: hidden;
    transition:
      transform var(--transition-medium),
      visibility 0s var(--transition-medium);
    pointer-events: auto;
  }

  .site-header[data-open] .site-header__drawer {
    transform: translateX(0);
    visibility: visible;
    transition:
      transform var(--transition-medium),
      visibility 0s;
  }

  .nav-scrim {
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: block;
    background-color: rgba(7, 18, 40, 0.72);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-medium);
  }

  .site-header[data-open] .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }
}

/* 小高度设备：抽屉减少纵向留白 */
@media (max-height: 600px) and (max-width: 1024px) {
  .site-header__drawer {
    gap: 1rem;
    padding-top: 4rem;
  }

  .header-announcement {
    display: none;
  }
}

/* ---------- 9. 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1300;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-blue));
  box-shadow: 0 0 8px rgba(255, 107, 44, 0.4);
  pointer-events: none;
  transition: width 0.1s ease-out;
}

@media (min-width: 1025px) {
  .scroll-progress {
    left: var(--sidebar-width);
  }
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  background-color: var(--color-deep);
  color: var(--color-gray-blue);
  border-top: 4px solid var(--color-accent);
  font-size: 0.9375rem;
}

.site-footer::before {
  content: '';
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 30%, var(--color-blue) 100%);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 3rem clamp(1.5rem, 5vw, 4rem) 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 2.5rem;
}

.site-footer .brand {
  margin-bottom: 1rem;
}

.site-footer__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-gray-blue);
  max-width: 30rem;
}

.site-footer__heading {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ivory);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 107, 44, 0.4);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.site-footer__list li {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  font-size: 0.875rem;
  line-height: 1.5;
}

.site-footer__key {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--color-accent);
  min-width: 2.5em;
  flex-shrink: 0;
}

.site-footer__value {
  color: var(--color-gray-blue);
  flex: 1;
}

.site-footer__list--link li {
  display: block;
}

.site-footer__list--link a {
  display: inline-block;
  padding: 0.25rem 0;
  color: var(--color-gray-blue);
  transition: color var(--transition-fast);
}

.site-footer__list--link a:hover {
  color: var(--color-accent);
}

.site-footer__meta {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(179, 193, 219, 0.15);
  padding-top: 1.75rem;
  margin-top: 1.5rem;
}

.site-footer__trust {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(179, 193, 219, 0.7);
  margin-bottom: 1rem;
}

.site-footer__meta-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.site-footer__icp {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--color-gray-blue);
}

.site-footer__copyright {
  font-size: 0.875rem;
  color: var(--color-gray-blue);
}

/* ---------- 11. 通用内容组件 ---------- */

/* 内容容器 */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 4rem);
}

/* 面包屑 */
.breadcrumb {
  padding: 1.25rem 0;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gray-blue);
}

.breadcrumb__item:not(:last-child)::after {
  content: '→';
  font-family: var(--font-data);
  color: var(--color-accent);
  margin-left: 0.25rem;
}

.breadcrumb__item a {
  color: var(--color-gray-blue);
  transition: color var(--transition-fast);
}

.breadcrumb__item a:hover {
  color: var(--color-accent);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--color-ivory);
  font-weight: 500;
}

/* 区块 */
.section {
  padding: clamp(2.5rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
}

.section--dark {
  background-color: var(--color-night);
  color: var(--color-text-primary);
}

.section--light {
  background-color: var(--color-warm-gray);
  color: var(--color-deep);
}

.section--deep {
  background-color: var(--color-deep);
  color: var(--color-gray-blue);
}

/* 章节标题 */
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: inherit;
}

.section-title--accent {
  position: relative;
  padding-left: 1rem;
}

.section-title--accent::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 4px;
  background: var(--color-accent);
  transform: skewX(-10deg);
}

/* 题眉 */
.overline {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: block;
}

/* 网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }

@media (max-width: 768px) {
  .grid {
    gap: 1rem;
  }

  .col-span-4,
  .col-span-5,
  .col-span-6,
  .col-span-7,
  .col-span-8,
  .col-span-12 {
    grid-column: span 12;
  }
}

/* 图片容器 */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background-color: var(--color-deep);
  background-image: linear-gradient(135deg, rgba(47, 79, 143, 0.25), rgba(7, 18, 40, 0.5));
}

.img-frame--16x9 {
  aspect-ratio: 16 / 9;
}

.img-frame--3x2 {
  aspect-ratio: 3 / 2;
}

.img-frame--square {
  aspect-ratio: 1 / 1;
}

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

.img-frame::after {
  content: attr(data-caption);
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  color: var(--color-ivory);
  background: linear-gradient(transparent, rgba(7, 18, 40, 0.85));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.img-frame:hover::after,
.img-frame:focus-within::after {
  opacity: 1;
}

/* 数据高亮 */
.data-highlight {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.data-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-gray-blue);
  text-transform: uppercase;
}

/* ---------- 12. 平板与移动端响应调整 ---------- */
@media (max-width: 1024px) {
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .site-footer__brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer__brand-col {
    grid-column: auto;
  }

  .site-footer__meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* ---------- 13. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .scroll-progress {
    transition: none;
  }
}