/* ==========================================================================
   万合足球 · 共享站点样式  /assets/site.css
   档案柜与球场边线交叠：奶油纸质底 + 堆叠面板 + 赛区色相标签
   ========================================================================== */

/* ---------- 变量 ---------- */
:root {
  color-scheme: light;

  --cream: #F5F0E6;
  --cream-2: #EFE8DA;
  --paper: #E8DFCE;
  --ink: #221E1B;
  --ink-2: #3A342E;
  --green: #14512F;
  --green-deep: #0E3A22;
  --orange: #E4712B;
  --orange-deep: #A8451A;
  --slate: #4A5A6A;
  --lime: #C8F03C;

  --zone-c: #2E6E72;
  --zone-s: #B4552F;
  --zone-w: #C99A2E;
  --zone-e: #4E7A3A;
  --zone-o: #6B5B7A;

  --line: rgba(34, 30, 27, 0.14);
  --line-2: rgba(34, 30, 27, 0.30);
  --line-cream: rgba(245, 240, 230, 0.22);

  --wrap-max: 1200px;
  --gutter: clamp(18px, 4vw, 44px);

  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-xl: 40px;
  --pill: 999px;

  --shadow: 0 1px 0 rgba(34, 30, 27, 0.05), 0 18px 34px -26px rgba(34, 30, 27, 0.55);
  --ease: cubic-bezier(0.22, 0.72, 0.28, 1);

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "IBM Plex Mono", "Roboto Mono", SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5, p,
figure, blockquote, dl, dd { margin: 0; }

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

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }

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

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

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

/* ---------- 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--cream);
  background-image: linear-gradient(180deg, rgba(232, 223, 206, 0.55) 0, rgba(232, 223, 206, 0) 420px);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

h1 { font-size: clamp(32px, 5.6vw, 62px); }
h2 { font-size: clamp(26px, 3.8vw, 42px); }
h3 { font-size: clamp(19px, 2.4vw, 25px); }
h4 { font-size: clamp(17px, 2vw, 20px); }

/* ---------- 布局 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(40px, 6vw, 80px); }
.section--tight { padding-block: clamp(24px, 3.4vw, 44px); }

.stack {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 22px);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 3fr); }

.surface--paper { background: var(--paper); }
.surface--green { background: var(--green); color: var(--cream); }

/* ---------- 章节锚点与文本 ---------- */
.section-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
}
.section-mark::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
  margin-left: 6px;
}
.section-mark-num { color: var(--orange-deep); }
.section-mark-dash {
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--line-2);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.lede {
  max-width: 62ch;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.7;
  color: var(--ink-2);
}

.prose { max-width: 68ch; }
.prose p { margin-bottom: 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose h3 { margin: 1.5em 0 0.55em; }
.prose ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 0.55em;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

.rule-line {
  height: 1px;
  border: 0;
  background: var(--line);
  margin: 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: var(--pill);
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.3;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn:hover {
  background: var(--green);
  border-color: var(--green);
  color: var(--cream);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}
.btn--primary:hover {
  background: var(--orange-deep);
  border-color: var(--orange-deep);
  color: #FFF4E8;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--ink);
}
.btn--ghost:hover {
  background: var(--paper);
  border-color: var(--ink-2);
  color: var(--ink);
}

/* ---------- 胶囊与赛区标签 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.6;
  white-space: nowrap;
}
.pill--zone-c { background: var(--zone-c); border-color: transparent; color: #FFFFFF; }
.pill--zone-s { background: var(--zone-s); border-color: transparent; color: #FFFFFF; }
.pill--zone-w { background: var(--zone-w); border-color: transparent; color: var(--ink); }
.pill--zone-e { background: var(--zone-e); border-color: transparent; color: #FFFFFF; }
.pill--zone-o { background: var(--zone-o); border-color: transparent; color: #FFFFFF; }

/* ---------- 面板与卡片 ---------- */
.panel {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 34px);
}
.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.panel-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.2vw, 24px);
  letter-spacing: -0.01em;
  line-height: 1.22;
}
.panel--green {
  background: var(--green);
  border-color: transparent;
  color: var(--cream);
}
.panel--green .panel-title,
.panel--green h2,
.panel--green h3 { color: var(--cream); }
.panel--green .eyebrow,
.panel--green .label { color: rgba(245, 240, 230, 0.65); }

.card {
  position: relative;
  background: var(--cream-2);
  border: 1px solid var(--line);
  border-radius: var(--r-lg) var(--r-sm) var(--r-lg) var(--r-lg);
  padding: clamp(18px, 2.4vw, 26px);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.card:hover {
  border-color: var(--orange);
  background: var(--cream);
}

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  background-color: var(--paper);
  background-image: linear-gradient(135deg, rgba(20, 81, 47, 0.12), rgba(74, 90, 106, 0.16));
  aspect-ratio: 16 / 10;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 数据 ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.stat-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

/* ---------- 折叠内容组 ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion-item { border-bottom: 1px solid var(--line); }

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}
.accordion-trigger:hover { color: var(--orange-deep); }

.accordion-icon {
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  transition: transform 0.22s ease-out, background-color 0.22s ease-out, border-color 0.22s ease-out, color 0.22s ease-out;
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.accordion-panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  visibility: hidden;
  transition: max-height 0.22s ease-out, opacity 0.22s ease-out, visibility 0.22s ease-out;
}
.accordion-panel[data-open] {
  max-height: 900px;
  opacity: 1;
  visibility: visible;
}
.accordion-panel-inner { padding: 0 4px 18px; }

/* ---------- 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 14px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
}
.crumbs a { transition: color 0.18s var(--ease); }
.crumbs a:hover { color: var(--orange-deep); }
.crumbs-sep { opacity: 0.5; }

/* ---------- 显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
[data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- 跳至主要内容 ---------- */
.skip-link {
  position: absolute;
  left: 14px;
  top: -70px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--cream);
  border-radius: 0 0 var(--r-md) var(--r-md);
  font-size: 14px;
  font-weight: 700;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 0; }

/* ==========================================================================
   头部
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(245, 240, 230, 0.94);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  width: 100%;
  max-width: var(--wrap-max);
  margin-inline: auto;
  padding: 12px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* 品牌锁标：左端 */
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  min-width: 0;
}
.brand-mark {
  width: 44px;
  height: 44px;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--green);
  color: var(--lime);
  border-radius: 16px 16px 16px 5px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: -0.03em;
  box-shadow: 0 10px 18px -14px rgba(20, 81, 47, 0.95);
}
.brand-text {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.brand-rule { color: var(--orange); font-weight: 900; }
.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate);
  white-space: nowrap;
}

/* 右端：栏目胶囊组 + 索引 + 移动按钮 */
.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.primary-nav { min-width: 0; }

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

.nav-link {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink-2);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-link:hover {
  background: var(--paper);
  border-color: var(--line);
}
.nav-link[aria-current="page"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--cream);
}

/* 常驻索引按钮 */
.index-dock {
  position: relative;
  flex: 0 0 auto;
}
.index-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--line-2);
  background: var(--cream);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.index-toggle:hover {
  border-color: var(--orange);
  background: var(--cream-2);
}
.index-toggle-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 240, 60, 0.28);
}

.index-panel {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  z-index: 90;
  min-width: 208px;
  padding: 14px;
  background: var(--ink);
  color: var(--cream);
  border-radius: var(--r-md);
  box-shadow: 0 26px 44px -26px rgba(34, 30, 27, 0.85);
}
.index-dock[data-open] .index-panel { display: block; }

.index-panel-label {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(245, 240, 230, 0.58);
}
.index-link {
  display: block;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.index-link:hover {
  background: rgba(245, 240, 230, 0.10);
  border-color: var(--line-cream);
  color: var(--lime);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--line-2);
  background: var(--cream);
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 700;
  line-height: 1.4;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--ink-2); background: var(--cream-2); }

.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}
.nav-toggle-bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.nav-toggle-text { white-space: nowrap; }

/* 中宽桌面收紧栏目胶囊 */
@media (max-width: 1240px) and (min-width: 1081px) {
  .nav-link { padding: 8px 9px; font-size: 13px; }
  .brand-name { font-size: 18px; }
}

/* 移动 / 平板：导航折叠为纵向清单 */
@media (max-width: 1080px) {
  .nav-toggle { display: inline-flex; }

  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    padding: 12px var(--gutter) 20px;
    background: var(--cream);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 36px -28px rgba(34, 30, 27, 0.85);
  }
  .primary-nav[data-open] { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-link {
    display: block;
    padding: 13px 16px;
    border-radius: var(--r-md);
    border: 1px solid var(--line);
    font-size: 16px;
  }
  .nav-link:hover { background: var(--paper); }
  .nav-link[aria-current="page"] {
    background: var(--green);
    border-color: var(--green);
    color: var(--cream);
  }
}

@media (max-width: 640px) {
  .header-inner { padding: 10px var(--gutter); }
  .brand-sub { display: none; }
  .brand-rule { display: none; }
  .brand-name { font-size: 17px; }
  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
    border-radius: 14px 14px 14px 4px;
  }
  .index-toggle { padding: 8px 11px; font-size: 12.5px; }
  .nav-toggle { padding: 8px 12px; }
  .nav-toggle-text { display: none; }
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
  margin-top: clamp(56px, 8vw, 110px);
  background-color: var(--ink);
  background-image:
    radial-gradient(120% 100% at 90% -20%, rgba(20, 81, 47, 0.92) 0%, rgba(20, 81, 47, 0) 60%),
    radial-gradient(80% 70% at 0% 112%, rgba(228, 113, 43, 0.18) 0%, rgba(228, 113, 43, 0) 62%);
  color: #EFE8DA;
  border-top: 5px solid var(--green);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.35fr 0.9fr;
  gap: clamp(24px, 3.4vw, 46px);
  padding-block: clamp(38px, 5vw, 64px) clamp(28px, 3.6vw, 48px);
}

.footer-lockup {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.3vw, 24px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--cream);
}
.footer-dot { color: var(--orange); }

.footer-tagline {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.footer-note {
  margin-top: 16px;
  max-width: 32ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(239, 232, 218, 0.62);
}

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: rgba(239, 232, 218, 0.5);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-link {
  display: inline-block;
  font-size: 14.5px;
  line-height: 1.5;
  color: rgba(239, 232, 218, 0.86);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-link:hover {
  color: var(--lime);
  border-bottom-color: rgba(200, 240, 60, 0.45);
}
.footer-link--wide { max-width: 26ch; }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 32px;
  align-items: baseline;
  justify-content: space-between;
  padding-block: 20px 30px;
  border-top: 1px solid var(--line-cream);
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(239, 232, 218, 0.58);
}
.footer-legal-line { max-width: 64ch; }
.footer-year {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--lime);
}

@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   通用响应式
   ========================================================================== */
@media (max-width: 900px) {
  .grid--2,
  .grid--3,
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

/* ==========================================================================
   动效降级
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .accordion-panel { transition: none; }
}