/* ============================================================
   博澳体育安卓 · Site Core CSS
   设计语言：深蓝 × 荧光绿 · 数据档案夹 · 非对称编辑部版式
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root {
  --color-bg-deep: #0A1E3F;
  --color-green: #00FF88;
  --color-orange: #FF5A36;
  --color-cream: #F7F3EC;
  --color-gray: #B8BCC4;
  --color-moss: #5C7A54;
  --color-terra: #C97E63;
  --color-ink: #0D2B45;
  --color-slate: #2B3B4D;
  --color-laser: rgba(0, 255, 136, 0.15);

  --font-display: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-data: "DIN Alternate", "Roboto Condensed", "Arial Narrow", "Helvetica Neue", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", monospace;

  --container-width: 1200px;
  --header-height: 72px;
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 200ms;
  --duration-mid: 400ms;
  --duration-drag: 600ms;

  --shadow-card: 0 8px 32px rgba(10, 30, 63, 0.12);
  --shadow-nav: 0 4px 24px rgba(10, 30, 63, 0.25);
  --shadow-btn: 0 4px 16px rgba(255, 90, 54, 0.35);
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::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: 0.9375rem;
  line-height: 1.7;
  color: var(--color-ink);
  background-color: var(--color-cream);
  -webkit-font-smoothing: antialiased;
}

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

input,
button,
textarea,
select {
  font: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 0.5em;
  color: var(--color-ink);
}

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

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

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

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

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(43, 59, 77, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  font-family: var(--font-mono);
  background: var(--color-slate);
  color: var(--color-cream);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
}

blockquote {
  border-left: 3px solid var(--color-green);
  padding-left: 1em;
  margin: 1.5em 0;
  color: var(--color-slate);
  font-style: italic;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th,
td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(184, 188, 196, 0.3);
}

th {
  font-weight: 600;
  background: rgba(43, 59, 77, 0.06);
  color: var(--color-ink);
}

::selection {
  background: rgba(0, 255, 136, 0.3);
  color: var(--color-ink);
}

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

/* ---------- 3. 布局容器 ---------- */
.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container--narrow {
  max-width: 760px;
}

.main-content {
  min-height: 70vh;
  position: relative;
}

.main-content:focus {
  outline: none;
}

.section {
  padding: clamp(48px, 8vw, 96px) 0;
  position: relative;
}

.section--dark {
  background: var(--color-bg-deep);
  color: rgba(247, 243, 236, 0.85);
}

.section--dark .section-title {
  color: var(--color-cream);
}

/* ---------- 4. 跳到主内容 ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 2000;
  padding: 12px 24px;
  background: var(--color-green);
  color: var(--color-ink);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: top var(--duration-fast) var(--ease-out);
}

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

/* ---------- 5. 阅读进度条 ---------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-green), var(--color-orange));
  z-index: 2000;
  pointer-events: none;
  border-radius: 0 2px 2px 0;
}

/* ---------- 6. 页头 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--duration-mid) var(--ease-out),
              box-shadow var(--duration-mid) var(--ease-out);
}

.site-header.is-solid {
  background: rgba(10, 30, 63, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-nav);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-height);
}

/* ---------- 7. 品牌 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--color-cream);
  white-space: nowrap;
}

.brand__tagline {
  display: none;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-green);
  border-left: 2px solid var(--color-green);
  padding-left: 12px;
  white-space: nowrap;
}

@media (min-width: 640px) {
  .brand__tagline {
    display: inline;
  }
}

.brand--footer .brand__logo {
  font-size: 1.5rem;
}

.brand--footer .brand__tagline {
  display: inline;
}

/* ---------- 8. 主导航 ---------- */
.main-nav {
  display: flex;
  align-items: center;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.main-nav__list a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(247, 243, 236, 0.85);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.main-nav__list a:hover {
  color: var(--color-cream);
  background: rgba(255, 255, 255, 0.08);
}

.main-nav__list a[aria-current="page"] {
  color: var(--color-green);
  background: rgba(0, 255, 136, 0.14);
  font-weight: 600;
}

/* ---------- 9. 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(10, 30, 63, 0.65);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.nav-toggle__bar {
  height: 2px;
  background: var(--color-cream);
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

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

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

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

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-orange);
  color: var(--color-ink);
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background: #ff6b4a;
  box-shadow: 0 8px 24px rgba(255, 90, 54, 0.45);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-green);
  color: var(--color-green);
}

.btn-outline:hover {
  background: rgba(0, 255, 136, 0.1);
}

.btn-outline--light {
  background: transparent;
  border: 1.5px solid var(--color-moss);
  color: var(--color-moss);
}

.btn-outline--light:hover {
  background: rgba(92, 122, 84, 0.1);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

.header-cta {
  display: none;
  padding: 10px 20px;
  font-size: 0.8125rem;
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  background: var(--color-bg-deep);
  color: rgba(247, 243, 236, 0.8);
  font-size: 0.875rem;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0, 255, 136, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.site-footer__slogan {
  position: absolute;
  bottom: -0.15em;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 900;
  line-height: 1;
  color: rgba(247, 243, 236, 0.03);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  padding: 64px 24px 32px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

@media (min-width: 640px) {
  .site-footer__top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .site-footer__top {
    grid-template-columns: 2fr 1fr 1.1fr 0.9fr;
    gap: 48px;
  }
}

.site-footer__about {
  margin-top: 16px;
  max-width: 36ch;
  color: rgba(247, 243, 236, 0.7);
  font-size: 0.875rem;
}

.site-footer__trust {
  margin-top: 16px;
  font-size: 0.8125rem;
  color: rgba(247, 243, 236, 0.55);
  border-left: 3px solid var(--color-green);
  padding-left: 16px;
  max-width: 48ch;
  line-height: 1.8;
}

.site-footer__heading {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: 16px;
}

.footer-nav,
.footer-contact,
.footer-legal {
  display: grid;
  gap: 10px;
}

.footer-nav a,
.footer-legal a {
  display: inline-block;
  color: rgba(247, 243, 236, 0.75);
  transition: color var(--duration-fast) var(--ease-out),
              padding-left var(--duration-fast) var(--ease-out);
}

.footer-nav a:hover,
.footer-legal a:hover {
  color: var(--color-green);
  padding-left: 4px;
}

.footer-contact {
  color: rgba(247, 243, 236, 0.75);
}

.footer-contact__label {
  display: inline-block;
  width: 3em;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-green);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(184, 188, 196, 0.18);
  font-size: 0.8125rem;
  color: rgba(247, 243, 236, 0.5);
}

/* ---------- 12. 返回顶部 ---------- */
.footer-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-green);
  color: var(--color-ink);
  font-size: 1.25rem;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 255, 136, 0.4);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity var(--duration-mid) var(--ease-out),
              transform var(--duration-mid) var(--ease-out),
              visibility 0s linear var(--duration-mid);
}

.footer-top.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity var(--duration-mid) var(--ease-out),
              transform var(--duration-mid) var(--ease-out),
              visibility 0s;
}

/* ---------- 13. 排版组件 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-green);
}

.section-label::before {
  content: "";
  width: 24px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-ink);
  margin-top: 8px;
}

.section-title--light {
  color: var(--color-cream);
}

.data-number {
  font-family: var(--font-data);
  font-weight: 900;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  color: var(--color-green);
  font-variant-numeric: tabular-nums;
}

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

/* ---------- 14. 数据组件 ---------- */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-cream);
  border: 1px solid rgba(184, 188, 196, 0.4);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
  border-color: rgba(0, 255, 136, 0.5);
}

.card--dark {
  background: var(--color-bg-deep);
  color: var(--color-cream);
  border-color: transparent;
}

.card--dark:hover {
  border-color: rgba(0, 255, 136, 0.35);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: rgba(0, 255, 136, 0.12);
  color: var(--color-green);
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.tag--orange {
  background: rgba(255, 90, 54, 0.14);
  color: var(--color-orange);
}

.tag--slate {
  background: rgba(43, 59, 77, 0.1);
  color: var(--color-slate);
}

/* ---------- 15. 面包屑 ---------- */
.breadcrumb {
  font-size: 0.8125rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.breadcrumb__list li {
  display: flex;
  align-items: center;
}

.breadcrumb__list li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--color-gray);
  font-size: 0.75rem;
}

.breadcrumb a {
  color: var(--color-ink);
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out);
}

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

.breadcrumb [aria-current="page"] {
  color: var(--color-slate);
  font-weight: 600;
}

/* ---------- 16. 图片框架 ---------- */
.image-frame {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    linear-gradient(rgba(0, 255, 136, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.06) 1px, transparent 1px),
    linear-gradient(140deg, var(--color-slate) 0%, var(--color-bg-deep) 100%);
  background-size: 32px 32px, 32px 32px, 100% 100%;
  min-height: 180px;
}

.image-frame[data-ratio="16/9"] {
  aspect-ratio: 16 / 9;
}

.image-frame[data-ratio="4/3"] {
  aspect-ratio: 4 / 3;
}

.image-frame[data-ratio="1/1"] {
  aspect-ratio: 1 / 1;
}

.image-frame[data-ratio="21/9"] {
  aspect-ratio: 21 / 9;
}

.image-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, var(--color-laser), transparent 50%);
  pointer-events: none;
  z-index: 2;
}

/* ---------- 17. 滚动效果 ---------- */
.js [data-animate] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-mid) var(--ease-out),
              transform var(--duration-mid) var(--ease-out);
}

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

[data-scroll-spy] {
  transition: opacity var(--duration-mid) var(--ease-out);
}

[data-scroll-spy].is-active {
  opacity: 1;
}

[data-section] {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

/* ---------- 18. 移动端断点 ---------- */
@media (max-width: 859px) {
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-deep);
    padding: 48px 24px 32px;
    transform: translateX(105%);
    transition: transform var(--duration-mid) var(--ease-out);
    overflow-y: auto;
    z-index: 999;
    flex-direction: column;
    align-items: stretch;
  }

  .main-nav::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
      linear-gradient(rgba(0, 255, 136, 0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0, 255, 136, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
  }

  .main-nav[data-open="true"] {
    transform: translateX(0);
  }

  .main-nav__list {
    position: relative;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .main-nav__list a {
    display: block;
    padding: 14px 16px;
    font-size: 1.0625rem;
    font-weight: 600;
    color: rgba(247, 243, 236, 0.9);
    border-radius: var(--radius-sm);
  }

  .main-nav__list a:hover {
    background: rgba(255, 255, 255, 0.06);
  }

  .main-nav__list a[aria-current="page"] {
    background: rgba(0, 255, 136, 0.14);
    color: var(--color-green);
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none !important;
  }

  .site-header__inner {
    gap: 12px;
  }
}

@media (min-width: 860px) {
  .nav-toggle {
    display: none;
  }

  .header-cta {
    display: inline-flex;
  }
}

/* ---------- 19. 无障碍与减少动效 ---------- */
@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;
    transition-delay: 0s !important;
  }

  .footer-top {
    transition: none;
  }

  .js [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}