/* ==========================================================================
   盈嘉体育 · 全站共享样式
   文件：/assets/site.css
   版本：V3.1
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --color-bg: #F5EFE6;
  --color-bg-panel: #FFFFFF;
  --color-bg-dark: #1A1C1B;
  --color-bg-rock: #3F4240;
  --color-text: #1A1C1B;
  --color-text-secondary: #63707A;
  --color-text-on-dark: #F5EFE6;
  --color-accent: #B5593B;
  --color-accent-400: #C0765C;
  --color-accent-dark: #8E3F32;
  --color-moss: #5C6A4E;
  --color-gold: #C79A3B;
  --color-sand: #D8C9B4;

  --font-heading: "Segoe UI Variable", "Inter Tight", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  --header-h: 80px;
  --container-w: 1440px;
  --border-thick: 3px;
  --border-thin: 1px;
  --radius-capsule: 999px;
  --radius-panel: 16px;
  --shadow-hard: 6px 6px 0 var(--color-accent);
  --shadow-dark: 6px 6px 0 var(--color-bg-rock);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  --font-body-size: 0.9375rem;
  --font-body-lh: 1.6;
  --font-index-size: 0.75rem;
}

/* ---------- 2. Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scrollbar-color: var(--color-bg-rock) var(--color-bg);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-top: var(--header-h);
  font-family: var(--font-body);
  font-size: var(--font-body-size);
  line-height: var(--font-body-lh);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

#main-content {
  flex: 1 0 auto;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-heading);
  text-wrap: balance;
}

p {
  margin: 0;
  overflow-wrap: break-word;
}

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

ul,
ol {
  list-style: none;
}

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

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

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-bg-rock);
  border-radius: 6px;
  border: 2px solid var(--color-bg);
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- 3. 无障碍跳转 ---------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 2000;
  padding: 10px 20px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border: var(--border-thick) solid var(--color-text);
  border-radius: 8px;
  transform: translateY(-400%);
  transition: transform 0.2s var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 4. 阅读进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  z-index: 2000;
  pointer-events: none;
}

/* ---------- 5. 头部：悬浮胶囊导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px clamp(12px, 3vw, 32px) 0;
  pointer-events: none;
}

.nav-capsule {
  position: relative;
  max-width: var(--container-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-bg-panel);
  border: var(--border-thick) solid var(--color-text);
  border-radius: var(--radius-capsule);
  box-shadow: var(--shadow-hard);
  padding: 6px 10px 6px 14px;
  pointer-events: auto;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  padding-right: 4px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.0625rem;
  border-radius: 12px 12px 12px 2px;
  border: 2px solid var(--color-text);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text);
  white-space: nowrap;
}

.brand-version {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--color-gold);
  color: var(--color-text);
  padding: 2px 8px;
  border-radius: var(--radius-capsule);
  border: 1px solid var(--color-text);
  white-space: nowrap;
}

.site-nav {
  margin-left: auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: block;
  padding: 8px 13px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-capsule);
  white-space: nowrap;
  transition: color 0.2s, background-color 0.2s;
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.nav-link[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: var(--border-thin) solid var(--color-sand);
  border-radius: var(--radius-capsule);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.header-status:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

.header-status[aria-pressed="true"] {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.header-status[aria-pressed="true"] .status-dot {
  background: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(199, 154, 59, 0.35);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-moss);
  box-shadow: 0 0 0 2px rgba(92, 106, 78, 0.25);
  flex-shrink: 0;
}

.status-text {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-text);
  color: var(--color-bg);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  margin-left: 2px;
  transition: background-color 0.2s, transform 0.2s;
}

.nav-toggle:hover {
  background: var(--color-accent);
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.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);
}

/* ---------- 6. 按钮族 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border: 2px solid var(--color-text);
  border-radius: var(--radius-capsule);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  box-shadow: 3px 3px 0 var(--color-text);
  transition: transform 0.15s, box-shadow 0.15s, background-color 0.15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--color-text);
}

.btn:active {
  transform: translate(3px, 3px);
  box-shadow: none;
}

.btn-dark {
  background: var(--color-text);
  color: var(--color-bg);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-accent:hover {
  background: var(--color-accent-dark);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-sand);
  box-shadow: none;
}

.btn-ghost:hover {
  border-color: var(--color-text);
  box-shadow: none;
}

.btn-gold {
  background: var(--color-gold);
  color: var(--color-text);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.8125rem;
  box-shadow: 2px 2px 0 var(--color-text);
}

.btn-sm:hover {
  box-shadow: 1px 1px 0 var(--color-text);
}

.btn-sm:active {
  box-shadow: none;
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: auto;
  background-color: var(--color-bg-dark);
  background-image:
    linear-gradient(rgba(245, 239, 230, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 239, 230, 0.02) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--color-text-on-dark);
}

.site-footer::before {
  content: "";
  display: block;
  height: 6px;
  background: linear-gradient(100deg, var(--color-accent) 0%, var(--color-accent) 55%, var(--color-gold) 55%, var(--color-gold) 100%);
}

.footer-shell {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 60px 40px 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(245, 239, 230, 0.14);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
}

.footer-brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: 10px 10px 10px 2px;
  border: 2px solid var(--color-text);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-on-dark);
}

.footer-brand-version {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  background: var(--color-gold);
  color: var(--color-text);
  padding: 2px 8px;
  border-radius: var(--radius-capsule);
  border: 1px solid var(--color-text);
}

.footer-about {
  margin-top: 18px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(245, 239, 230, 0.72);
  max-width: 36ch;
}

.footer-trust {
  margin-top: 18px;
  font-size: 0.75rem;
  line-height: 1.65;
  color: rgba(245, 239, 230, 0.5);
  padding-left: 12px;
  border-left: 2px solid var(--color-gold);
  max-width: 44ch;
}

.trust-mark {
  color: var(--color-gold);
  margin-right: 4px;
  font-size: 0.625rem;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 18px;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(245, 239, 230, 0.75);
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--color-bg);
  padding-left: 4px;
}

.footer-contact-line {
  font-size: 0.875rem;
  color: rgba(245, 239, 230, 0.75);
  line-height: 1.6;
}

.footer-contact-sub {
  font-size: 0.75rem;
  color: rgba(245, 239, 230, 0.45);
  line-height: 1.6;
  margin-top: 2px;
}

.footer-address {
  font-size: 0.8125rem;
  color: rgba(245, 239, 230, 0.5);
  line-height: 1.6;
  margin-top: 10px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
}

.footer-copyright {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(245, 239, 230, 0.42);
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: rgba(245, 239, 230, 0.42);
}

/* ---------- 8. 布局与容器工具 ---------- */
.container {
  width: min(100% - 48px, var(--container-w));
  margin-inline: auto;
}

.section {
  padding: 72px 0;
}

.section--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.section--rock {
  background: var(--color-bg-rock);
  color: var(--color-text-on-dark);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

/* ---------- 9. 页首标题组 ---------- */
.page-head {
  padding: calc(var(--header-h) + 40px) 0 40px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--font-index-size);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--color-accent);
}

.page-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 6rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-top: 16px;
}

.section--dark .page-title,
.section--rock .page-title {
  color: var(--color-text-on-dark);
}

.lead {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 450;
  line-height: 1.5;
  color: var(--color-text-secondary);
  max-width: 56ch;
  margin-top: 18px;
}

.section--dark .lead,
.section--rock .lead {
  color: rgba(245, 239, 230, 0.75);
}

/* ---------- 10. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.breadcrumbs a {
  color: var(--color-accent);
  transition: color 0.2s;
}

.breadcrumbs a:hover {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

.breadcrumbs .sep {
  color: var(--color-sand);
  margin: 0 2px;
}

/* ---------- 11. 面板与窗口 ---------- */
.panel {
  background: var(--color-bg-panel);
  border: var(--border-thick) solid var(--color-text);
  box-shadow: 6px 6px 0 var(--color-sand);
  padding: 24px;
  border-radius: var(--radius-panel);
}

.panel-accent {
  border-color: var(--color-accent);
  box-shadow: 6px 6px 0 var(--color-accent);
}

.window-frame {
  position: relative;
  background: var(--color-bg-panel);
  border: var(--border-thick) solid var(--color-text);
  box-shadow: var(--shadow-dark);
  padding: 24px;
  border-radius: 12px;
}

.window-frame::before {
  content: "";
  display: block;
  height: 10px;
  margin: -24px -24px 20px;
  background:
    radial-gradient(circle at 12px 5px, var(--color-accent) 3.5px, transparent 4px),
    radial-gradient(circle at 30px 5px, var(--color-gold) 3.5px, transparent 4px),
    radial-gradient(circle at 48px 5px, var(--color-moss) 3.5px, transparent 4px),
    var(--color-bg-dark);
  border-bottom: 1px solid var(--color-sand);
  border-radius: 9px 9px 0 0;
}

/* ---------- 12. 数据块与索引 ---------- */
.stat {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  box-shadow: 3px 3px 0 var(--color-sand);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
}

.stat-value--gold {
  color: var(--color-gold);
}

.stat-value--moss {
  color: var(--color-moss);
}

.stat-value--accent {
  color: var(--color-accent);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.index-num {
  font-family: var(--font-mono);
  font-size: var(--font-index-size);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  line-height: 1;
}

/* ---------- 13. 媒体占位 ---------- */
.media-frame {
  position: relative;
  background: var(--color-bg-rock);
  border: 2px solid var(--color-text);
  min-height: 200px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(245, 239, 230, 0.18);
  pointer-events: none;
}

.media-frame::after {
  content: attr(data-label);
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(245, 239, 230, 0.55);
  padding: 8px 14px;
  background: rgba(26, 28, 27, 0.6);
  border: 1px solid rgba(245, 239, 230, 0.14);
}

.media-frame > img,
.media-frame > picture,
.media-frame > video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 14. 斜切标签 ---------- */
.diag-badge {
  display: inline-block;
  padding: 8px 22px 8px 18px;
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.diag-badge--accent {
  background: var(--color-accent);
}

.diag-badge--gold {
  background: var(--color-gold);
  color: var(--color-text);
}

/* ---------- 15. 滚动显现 ---------- */
body.js-enabled .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

body.js-enabled .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .header-status {
    display: none;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 14px);
    left: 0;
    right: 0;
    background: var(--color-bg-panel);
    border: var(--border-thick) solid var(--color-text);
    border-radius: 16px;
    box-shadow: var(--shadow-hard);
    padding: 14px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s var(--ease-out), transform 0.25s var(--ease-out), visibility 0.25s;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: 10px;
    white-space: normal;
  }

  .nav-link[aria-current="page"] {
    color: var(--color-bg);
  }

  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    --header-h: 72px;
  }

  .nav-capsule {
    padding: 5px 8px 5px 12px;
    border-width: 2px;
    box-shadow: 4px 4px 0 var(--color-accent);
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 0.9375rem;
    border-radius: 10px 10px 10px 2px;
  }

  .brand-name {
    font-size: 1rem;
    letter-spacing: 0.04em;
  }

  .brand-version {
    display: none;
  }

  .header-actions .btn {
    padding: 5px 12px;
    font-size: 0.75rem;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .footer-shell {
    padding: 44px 20px 24px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
  }

  .footer-brand-col {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  .page-head {
    padding-top: calc(var(--header-h) + 28px);
  }

  .section {
    padding: 48px 0;
  }

  .window-frame,
  .panel {
    padding: 18px;
    box-shadow: 4px 4px 0 var(--color-sand);
  }

  .window-frame::before {
    margin: -18px -18px 14px;
  }
}

/* ---------- 17. 动效降级 ---------- */
@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;
    transition-delay: 0s !important;
  }

  body.js-enabled .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}