/* ============================================================
   江南体育官方网站 / 江南赛点 Site Kit 共享样式
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-rendering: optimizeLegibility; scroll-behavior: smooth; }
body { min-height: 100vh; font-family: var(--font-body); font-size: 15px; line-height: 1.7; color: var(--text-main); background: var(--c-bg); overflow-x: hidden; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 900; line-height: 1.15; color: #ffffff; text-transform: uppercase; letter-spacing: 0.5px; }
p { overflow-wrap: break-word; }
[hidden] { display: none !important; }

/* ---------- Variables ---------- */
:root {
  --c-bg: #0a0a0a;
  --c-deep: #0b1a2e;
  --c-gray: #2a2a2a;
  --c-orange: #ff5e18;
  --c-red: #e8302a;
  --c-yellow: #ffd400;
  --c-green: #ccff00;
  --text-main: #ffffff;
  --text-body: rgba(255,255,255,0.82);
  --text-muted: rgba(255,255,255,0.55);
  --text-faint: rgba(255,255,255,0.35);
  --font-display: Impact, 'Arial Black', 'PingFang SC', 'Microsoft YaHei', 'Heiti SC', 'SimHei', sans-serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', 'Consolas', monospace;
  --container-max: 1240px;
  --container-pad: 20px;
  --border-w: 2px;
  --shadow-hard: 8px 8px 0 rgba(0,0,0,0.85);
  --transition: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---------- Utility ---------- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding-left: var(--container-pad); padding-right: var(--container-pad); }
.visually-hidden { position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important; margin: -1px !important; overflow: hidden !important; clip: rect(0,0,0,0) !important; white-space: nowrap !important; border: 0 !important; }

/* ---------- Focus ---------- */
:focus-visible { outline: 3px solid var(--c-yellow); outline-offset: 2px; }

/* ---------- Skip Link ---------- */
.skip-link { position: absolute; top: -100px; left: 0; z-index: 9999; background: var(--c-orange); color: #fff; padding: 10px 20px; font-weight: 800; font-size: 14px; letter-spacing: 1px; transition: top 0.2s ease; }
.skip-link:focus { top: 0; color: #fff; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 20px; font-family: var(--font-body); font-size: 14px; font-weight: 800; line-height: 1.3; letter-spacing: 1px; text-transform: uppercase; text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: all var(--transition); white-space: nowrap; }
.btn-primary { background: var(--c-orange); color: #fff; border-color: var(--c-orange); transform: skewX(-6deg); box-shadow: 0 0 0 rgba(255, 94, 24, 0); }
.btn-primary > span { display: inline-block; transform: skewX(6deg); }
.btn-primary:hover { background: var(--c-red); border-color: var(--c-red); box-shadow: 4px 4px 0 var(--c-yellow); transform: skewX(-6deg) translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border-color: var(--c-gray); }
.btn-outline:hover { border-color: var(--c-orange); color: var(--c-orange); }
.btn-dark { background: var(--c-bg); color: #fff; border-color: var(--c-bg); }
.btn-dark:hover { background: var(--c-orange); border-color: var(--c-orange); }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-sm { padding: 6px 14px; font-size: 12px; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 1000; background: var(--c-bg); border-bottom: var(--border-w) solid var(--c-gray); }

/* 上层通告条 */
.header-top { background: var(--c-deep); border-bottom: 1px solid rgba(255,255,255,0.08); position: relative; overflow: hidden; }
.header-top::after { content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 140px; background: linear-gradient(90deg, transparent, var(--c-orange)); opacity: 0.28; clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%); }
.header-top-inner { display: flex; justify-content: space-between; align-items: center; min-height: 34px; position: relative; z-index: 1; }
.header-slogan { font-size: 12px; font-weight: 700; color: rgba(255,255,255,0.85); letter-spacing: 3px; text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-slogan::before { content: '// '; color: var(--c-orange); font-family: var(--font-mono); font-weight: 900; }
.live-indicator { display: inline-flex; align-items: center; gap: 6px; color: var(--c-green); font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; white-space: nowrap; }
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-green); animation: live-pulse 1.2s infinite ease-in-out; flex-shrink: 0; }
@keyframes live-pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.75); } }

/* 主栏 */
.header-main { background-color: var(--c-bg); background-image: repeating-linear-gradient(135deg, transparent 0, transparent 14px, rgba(255,94,24,0.025) 14px, rgba(255,94,24,0.025) 16px); }
.header-main-inner { display: flex; align-items: center; min-height: 72px; gap: 16px; position: relative; }

/* 品牌 */
.brand { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; }
.brand-logo { display: inline-block; font-family: var(--font-display); font-size: 24px; font-weight: 900; line-height: 1; color: #fff; background: var(--c-orange); padding: 9px 24px 9px 14px; clip-path: polygon(0 0, 92% 0, 100% 50%, 92% 100%, 0 100%); transform: skewX(-6deg); letter-spacing: 2px; white-space: nowrap; text-transform: uppercase; }
.brand-sub { font-family: var(--font-display); font-size: 10px; font-weight: 900; color: var(--c-orange); border: 2px solid var(--c-orange); padding: 3px 5px 1px; letter-spacing: 2px; transform: skewX(-8deg); text-transform: uppercase; }

/* 导航 */
.site-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; margin-right: 8px; }
.site-nav a { position: relative; display: inline-flex; align-items: center; font-family: var(--font-body); font-size: 15px; font-weight: 700; color: rgba(255,255,255,0.78); padding: 10px 14px; letter-spacing: 0.5px; text-decoration: none; transition: color var(--transition), background var(--transition); white-space: nowrap; }
.site-nav a:hover { color: var(--c-orange); background: rgba(255,94,24,0.08); }
.site-nav a[aria-current="page"] { color: var(--c-orange); }
.site-nav a[aria-current="page"]::after { content: ''; position: absolute; left: 12px; right: 12px; bottom: 0; height: 3px; background: var(--c-orange); transform: skewX(-20deg); }

/* 移动导航按钮 */
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 9px; background: transparent; border: 2px solid var(--c-gray); cursor: pointer; transition: border-color var(--transition); margin-left: auto; flex-shrink: 0; }
.nav-toggle:hover { border-color: var(--c-orange); }
.nav-toggle-line { display: block; width: 100%; height: 2px; background: #fff; transition: transform var(--transition), opacity var(--transition); }
.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; }
.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 订阅提醒 */
.subscribe-wrap { position: relative; flex-shrink: 0; }
.btn-subscribe { background: var(--c-orange); color: #fff; border: none; font-weight: 800; padding: 10px 18px; transform: skewX(-6deg); transition: all var(--transition); text-transform: uppercase; letter-spacing: 1px; font-size: 14px; white-space: nowrap; box-shadow: 0 0 0 rgba(0,0,0,0); }
.btn-subscribe .btn-label { display: inline-block; transform: skewX(6deg); }
.btn-subscribe:hover { background: var(--c-red); box-shadow: 4px 4px 0 var(--c-yellow); transform: skewX(-6deg) translateY(-2px); }
.subscribe-panel { position: absolute; right: 0; top: calc(100% + 12px); width: 300px; background: var(--c-deep); border: 2px solid var(--c-orange); padding: 20px; z-index: 2000; box-shadow: 10px 10px 0 rgba(0,0,0,0.6); display: none; }
.subscribe-panel[data-open] { display: block; animation: panel-in 0.25s ease-out; }
@keyframes panel-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.subscribe-panel-title { font-family: var(--font-display); font-size: 16px; font-weight: 900; color: var(--c-orange); letter-spacing: 2px; margin-bottom: 8px; }
.subscribe-panel-copy { font-size: 13px; line-height: 1.6; color: var(--text-body); margin-bottom: 14px; }

/* ---------- Footer ---------- */
.site-footer { position: relative; background-color: var(--c-deep); background-image: repeating-linear-gradient(-45deg, transparent 0, transparent 22px, rgba(255,255,255,0.015) 22px, rgba(255,255,255,0.015) 23px); color: var(--text-body); border-top: 4px solid var(--c-orange); margin-top: 72px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 56px 0 32px; }
.footer-col { min-width: 0; }
.footer-logo { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.footer-logo-text { display: inline-block; font-family: var(--font-display); font-size: 22px; font-weight: 900; line-height: 1; color: #fff; background: var(--c-orange); padding: 8px 20px 8px 10px; clip-path: polygon(0 0, 92% 0, 100% 50%, 92% 100%, 0 100%); transform: skewX(-6deg); letter-spacing: 2px; white-space: nowrap; text-transform: uppercase; }
.footer-logo-sub { font-family: var(--font-display); font-size: 10px; font-weight: 900; color: var(--c-orange); border: 2px solid var(--c-orange); padding: 3px 5px 1px; transform: skewX(-8deg); text-transform: uppercase; }
.footer-desc { font-size: 14px; line-height: 1.7; color: var(--text-body); margin-bottom: 18px; max-width: 420px; }
.footer-contact { border-left: 3px solid var(--c-orange); padding-left: 14px; margin-bottom: 18px; }
.footer-contact p { font-size: 13px; line-height: 1.6; color: var(--text-body); margin-bottom: 4px; }
.footer-icp { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); letter-spacing: 1px; }
.footer-title { position: relative; font-family: var(--font-display); font-size: 16px; font-weight: 900; color: #fff; letter-spacing: 2px; margin-bottom: 20px; padding-bottom: 8px; border-bottom: 2px solid var(--c-orange); display: inline-block; text-transform: uppercase; }
.footer-links ul, .footer-legal ul { display: grid; gap: 10px; }
.footer-links a, .footer-legal a { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--text-body); transition: color var(--transition), transform var(--transition); }
.footer-links a::before, .footer-legal a::before { content: '→'; font-family: var(--font-mono); font-size: 13px; color: var(--c-orange); transition: transform var(--transition); }
.footer-links a:hover, .footer-legal a:hover { color: var(--c-orange); }
.footer-links a:hover::before, .footer-legal a:hover::before { transform: translateX(3px); }
.footer-note { margin-top: 24px; padding: 14px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); font-size: 12px; line-height: 1.6; color: var(--text-faint); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; font-size: 13px; color: var(--text-faint); }
.footer-bottom p { letter-spacing: 1px; }

/* ---------- 正文容器 ---------- */
.main-content { min-height: 60vh; padding: 0 0 48px; }

/* ---------- 章节 ---------- */
.section { padding: 48px 0; }
.section-sm { padding: 24px 0; }
.section-lg { padding: 72px 0; }
.section-head { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.section-title { font-family: var(--font-display); font-size: clamp(22px, 3.2vw, 32px); font-weight: 900; color: #fff; letter-spacing: 1.5px; text-transform: uppercase; display: inline-flex; align-items: center; gap: 10px; }
.section-title::before { content: ''; display: inline-block; width: 8px; height: 28px; background: var(--c-orange); transform: skewX(-12deg); flex-shrink: 0; }
.section-sub { font-size: 14px; color: var(--text-muted); margin-top: 6px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0; padding: 18px 0 0; font-size: 13px; color: var(--text-muted); }
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li + li::before { content: '/'; color: var(--c-gray); padding: 0 8px; font-family: var(--font-mono); }
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--c-orange); }
.breadcrumb [aria-current="page"] { color: var(--c-orange); font-weight: 700; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

/* ---------- 卡片 ---------- */
.card { background: var(--c-gray); background: linear-gradient(135deg, rgba(42,42,42,0.95), rgba(11,26,46,0.65)); border: 2px solid #333; padding: 24px; transition: all var(--transition); }
.card:hover { border-color: var(--c-orange); box-shadow: 6px 6px 0 rgba(255,94,24,0.2); transform: translateY(-3px); }
.card-title { font-family: var(--font-display); font-size: 18px; font-weight: 900; color: #fff; margin-bottom: 10px; text-transform: uppercase; }
.card-text { font-size: 14px; line-height: 1.65; color: var(--text-body); }

/* ---------- 标签 ---------- */
.tag { display: inline-flex; align-items: center; font-family: var(--font-mono); font-size: 12px; font-weight: 700; padding: 3px 10px; border: 1px solid var(--c-gray); color: var(--text-body); text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; }
.tag-highlight { background: var(--c-yellow); color: var(--c-bg); border-color: var(--c-yellow); font-weight: 900; }
.tag-new { background: var(--c-green); color: var(--c-bg); border-color: var(--c-green); font-weight: 900; }
.tag-hot { background: transparent; color: var(--c-orange); border-color: var(--c-orange); font-weight: 900; }

/* ---------- 数据数字 ---------- */
.data-number { font-family: var(--font-mono); font-weight: 700; color: var(--c-orange); font-size: 24px; line-height: 1; font-variant-numeric: tabular-nums; }
.data-number-sm { font-size: 18px; }
.data-number-lg { font-size: 36px; }

/* ---------- 图片容器 ---------- */
.img-frame { position: relative; overflow: hidden; background: var(--c-gray); border: 2px solid #333; min-height: 80px; }
.img-frame::before { content: ''; display: block; padding-top: 56.25%; }
.img-frame.is-4x3::before { padding-top: 75%; }
.img-frame.is-1x1::before { padding-top: 100%; }
.img-frame-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.img-frame-plane { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

/* ---------- 图片占位 ---------- */
.media-placeholder { position: relative; overflow: hidden; background: linear-gradient(135deg, #1a1a1a 0%, var(--c-deep) 100%); border: 2px solid var(--c-gray); min-height: 160px; display: flex; align-items: center; justify-content: center; }
.media-placeholder::before { content: ''; position: absolute; top: -20%; left: -10%; width: 120%; height: 12px; background: var(--c-orange); opacity: 0.35; transform: rotate(-12deg); box-shadow: 0 4px 12px rgba(255,94,24,0.3); }
.media-placeholder::after { content: 'IMG'; font-family: var(--font-mono); font-size: 16px; font-weight: 900; color: rgba(255,255,255,0.2); letter-spacing: 6px; z-index: 1; }

/* ---------- 标签页 ---------- */
.tabs { border-bottom: 2px solid var(--c-gray); display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab-btn { flex-shrink: 0; padding: 12px 20px; font-family: var(--font-body); font-size: 14px; font-weight: 800; color: var(--text-muted); background: transparent; border: none; cursor: pointer; position: relative; white-space: nowrap; text-transform: uppercase; letter-spacing: 1px; transition: color var(--transition); }
.tab-btn:hover { color: #fff; }
.tab-btn[aria-selected="true"] { color: var(--c-orange); }
.tab-btn[aria-selected="true"]::after { content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 3px; background: var(--c-orange); transform: skewX(-12deg); }
.tab-panel { padding: 24px 0; }

/* ---------- 折叠面板 ---------- */
.accordion-item { border: 2px solid var(--c-gray); margin-bottom: 12px; background: rgba(255,255,255,0.02); transition: border-color var(--transition); }
.accordion-item[data-open] { border-color: var(--c-orange); }
.accordion-title { width: 100%; text-align: left; padding: 16px 20px; font-family: var(--font-body); font-size: 15px; font-weight: 700; color: #fff; display: flex; justify-content: space-between; align-items: center; gap: 16px; cursor: pointer; }
.accordion-title::after { content: '+'; font-family: var(--font-mono); font-size: 20px; color: var(--c-orange); flex-shrink: 0; transition: transform var(--transition); }
.accordion-item[data-open] .accordion-title::after { content: '−'; }
.accordion-content { padding: 0 20px 16px; font-size: 14px; line-height: 1.65; color: var(--text-body); }

/* ---------- 滚动进度 ---------- */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--c-orange) 0%, var(--c-red) 100%); z-index: 9999; pointer-events: none; }

/* ---------- 返回顶部 ---------- */
.back-to-top { position: fixed; right: 24px; bottom: 24px; z-index: 900; width: 48px; height: 48px; background: var(--c-orange); color: #fff; font-family: var(--font-mono); font-size: 12px; font-weight: 900; letter-spacing: 1px; border: 2px solid var(--c-orange); cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(12px) rotate(2deg); transition: all var(--transition); box-shadow: 0 0 0 rgba(0,0,0,0); }
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0) rotate(0); }
.back-to-top:hover { background: var(--c-bg); color: var(--c-orange); box-shadow: 4px 4px 0 var(--c-orange); }

/* ---------- 滚动显现 ---------- */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-reveal].is-revealed { opacity: 1; transform: translateY(0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1200px) {
  :root { --container-pad: 16px; }
  .site-nav { gap: 0; }
  .site-nav a { padding: 8px 10px; font-size: 14px; }
  .brand-logo { font-size: 22px; padding: 8px 20px 8px 12px; }
  .btn-subscribe { padding: 8px 14px; font-size: 13px; }
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2.2fr 1fr 1fr; }
  .footer-brand { grid-column: auto; }
}

@media (max-width: 1023px) {
  .nav-toggle { display: flex; }
  .header-main-inner { min-height: 62px; gap: 10px; }
  .site-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; background: var(--c-bg); border-top: 3px solid var(--c-orange); border-bottom: 3px solid var(--c-orange); padding: 10px 12px; margin: 0; box-shadow: 0 18px 30px rgba(0,0,0,0.7); }
  .site-nav[data-open] { display: flex; }
  .site-nav a { padding: 14px 16px; font-size: 16px; border-left: 3px solid transparent; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .site-nav a:last-child { border-bottom: none; }
  .site-nav a:hover { background: rgba(255,94,24,0.1); border-left-color: var(--c-orange); }
  .site-nav a[aria-current="page"]::after { display: none; }
  .site-nav a[aria-current="page"] { background: rgba(255,94,24,0.12); border-left-color: var(--c-orange); }
  .subscribe-panel { width: 260px; }
}

@media (max-width: 600px) {
  .header-top-inner { min-height: 30px; }
  .header-slogan { font-size: 11px; letter-spacing: 1px; }
  .live-text { display: none; }
  .brand-logo { font-size: 18px; padding: 7px 18px 7px 10px; }
  .brand-sub { display: none; }
  .btn-subscribe { padding: 7px 10px; font-size: 12px; }
  .nav-toggle { width: 40px; height: 40px; }
  .subscribe-panel { position: fixed; left: 12px; right: 12px; top: 110px; width: auto; }
  .footer-grid { gap: 32px; padding: 40px 0 24px; }
  .section { padding: 32px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- 无障碍 ---------- */
@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; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .live-dot { animation: none; }
}