/* ===================================================================
   利来体育 · 共享样式表 /assets/site.css
   框架式导航：全高左竖栏 + 顶部窄条共同构成页面边框
   =================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--topbar-h) + var(--strip-h) + 20px);
}

body,
h1, h2, h3, h4, p, ul, ol, li, figure, blockquote { margin: 0; }

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

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

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

a { color: inherit; }

table { border-spacing: 0; }

[hidden] { display: none !important; }

/* ---------- 变量 ---------- */
:root {
  --pitch-deep: #0B2E23;
  --pitch-mid: #12402F;
  --line-green: #2E6F52;
  --board-blue: #8FA6B8;
  --grid-grey: #D5DEE5;
  --card-yellow: #FFC61A;
  --card-red: #CC2B22;
  --paper: #F6F7F4;
  --ink: #101A16;
  --pitch-soft: #E8F0EA;

  --rail-w: 84px;
  --topbar-h: 58px;
  --strip-h: 44px;
  --shell-max: 1320px;
  --gutter: clamp(18px, 3.2vw, 44px);

  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;

  --ease: cubic-bezier(.22, .7, .28, 1);
  --t-fast: 140ms;
  --t-mid: 240ms;

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

/* ---------- 基础排版 ---------- */
body {
  background-color: var(--pitch-deep);
  background-image:
    repeating-linear-gradient(90deg, rgba(143, 166, 184, .05) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(143, 166, 184, .035) 0 1px, transparent 1px 88px);
  color: var(--pitch-soft);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-underline-offset: 3px;
}

@media (min-width: 900px) {
  body {
    padding-left: var(--rail-w);
    padding-top: var(--topbar-h);
  }
}

@media (max-width: 899px) {
  body { padding-top: calc(var(--topbar-h) + var(--strip-h)); }
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .03em;
  line-height: 1.2;
  color: var(--paper);
}

strong { color: var(--paper); }

code, kbd, samp, .mono { font-family: var(--font-mono); }

:focus-visible {
  outline: 3px solid var(--card-yellow);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ===================================================================
   跳至正文
   =================================================================== */
.skip-link {
  position: fixed;
  top: -72px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  background: var(--card-yellow);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .06em;
  padding: 11px 22px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: top var(--t-fast) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible { top: 12px; }

/* ===================================================================
   头部框架
   =================================================================== */
.site-header {
  position: relative;
  z-index: 100;
}

/* --- 左侧全高竖栏 --- */
.header-rail {
  position: fixed;
  z-index: 90;
  background: var(--pitch-mid);
  border-right: 1px solid var(--line-green);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  overscroll-behavior: contain;
}

@media (min-width: 900px) {
  .header-rail {
    top: 0; left: 0; bottom: 0;
    width: var(--rail-w);
    padding: 16px 0 18px;
    overflow-y: auto;
    overflow-x: hidden;
  }
}

@media (max-width: 899px) {
  .header-rail {
    top: var(--topbar-h);
    left: 0; right: 0;
    height: var(--strip-h);
    flex-direction: row;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    overflow-x: auto;
    overflow-y: hidden;
    border-right: 0;
    border-bottom: 1px solid var(--line-green);
  }
}

.rail-mark {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  height: 40px;
  flex: 0 0 auto;
}

.mark-card {
  flex: 1;
  border-radius: 5px;
  background: var(--line-green);
}

.mark-card--yellow { background: var(--card-yellow); }
.mark-card--red { background: var(--card-red); }

.rail-group,
.rail-topics {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.rail-label {
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--board-blue);
  writing-mode: vertical-rl;
  text-orientation: upright;
}

.league-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.league-chip {
  appearance: none;
  background: transparent;
  border: 1px solid transparent;
  color: var(--board-blue);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: .16em;
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding: 10px 7px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.league-chip:hover {
  border-color: var(--line-green);
  background: rgba(46, 111, 82, .35);
  color: var(--paper);
}

.league-chip[aria-pressed="true"] {
  background: var(--card-yellow);
  border-color: var(--card-yellow);
  color: var(--ink);
  font-weight: 700;
}

.topic-link {
  display: block;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--board-blue);
  text-decoration: none;
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding: 8px 5px;
  border-radius: var(--radius-pill);
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.topic-link:hover {
  color: var(--card-yellow);
  background: rgba(255, 198, 26, .12);
}

.rail-foot {
  margin-top: auto;
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--line-green);
  writing-mode: vertical-rl;
  text-orientation: upright;
}

@media (max-height: 780px) and (min-width: 900px) {
  .rail-foot { display: none; }
  .league-chip { padding: 7px 6px; font-size: 12px; }
  .topic-link { padding: 6px 5px; font-size: 11px; }
}

/* 移动端：竖栏变为横向可滑动条 */
@media (max-width: 899px) {
  .rail-mark { flex-direction: row; width: 40px; height: 26px; }
  .rail-group,
  .rail-topics {
    flex-direction: row;
    align-items: center;
    width: auto;
    gap: 4px;
    flex: 0 0 auto;
  }
  .rail-label {
    writing-mode: horizontal-tb;
    letter-spacing: .12em;
    color: var(--line-green);
  }
  .league-rail { flex-direction: row; width: auto; gap: 4px; }
  .league-chip {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-size: 12px;
    letter-spacing: .08em;
    padding: 6px 12px;
    white-space: nowrap;
  }
  .topic-link {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    font-size: 12px;
    letter-spacing: .08em;
    padding: 6px 10px;
    white-space: nowrap;
  }
  .rail-topics::before {
    content: "";
    width: 1px;
    height: 20px;
    background: var(--line-green);
    flex: 0 0 auto;
  }
  .rail-foot { display: none; }
}

/* --- 顶部窄条 --- */
.header-top {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 80;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 0 var(--gutter);
  background: linear-gradient(180deg, rgba(11, 46, 35, .99), rgba(11, 46, 35, .94));
  border-bottom: 1px solid var(--line-green);
  backdrop-filter: blur(6px);
}

@media (min-width: 900px) {
  .header-top { left: var(--rail-w); }
}

.brand {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--paper);
  transition: color var(--t-fast) var(--ease);
}

.brand-line {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--board-blue);
}

.brand:hover .brand-name { color: var(--card-yellow); }

/* --- 主导航 --- */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 22px);
}

.nav-item { list-style: none; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--grid-grey);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 2px;
  height: 2px;
  background: var(--card-yellow);
  transition: right var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.nav-link:hover { color: #fff; }
.nav-link:hover::after { right: 0; }

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

.nav-link[aria-current="page"]::after {
  right: 0;
  background: var(--card-red);
}

@media (max-width: 899px) {
  .site-nav {
    position: fixed;
    top: calc(var(--topbar-h) + var(--strip-h));
    left: 0; right: 0;
    z-index: 70;
    display: block;
    background: var(--pitch-mid);
    border-bottom: 1px solid var(--line-green);
    padding: 12px var(--gutter) 22px;
    max-height: calc(100vh - var(--topbar-h) - var(--strip-h));
    overflow-y: auto;
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--t-fast) var(--ease),
                opacity var(--t-fast) var(--ease),
                visibility var(--t-fast) var(--ease);
  }

  .site-nav[data-open] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-link {
    display: block;
    padding: 13px 12px;
    font-size: 16px;
    border-radius: var(--radius-sm);
    border-bottom: 1px solid rgba(46, 111, 82, .35);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    background: rgba(255, 198, 26, .1);
    color: var(--card-yellow);
  }
}

/* --- 顶部工具区 --- */
.header-tools {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.season-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--line-green);
  color: var(--grid-grey);
  border-radius: var(--radius-pill);
  padding: 7px 14px;
  font-size: 13px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.season-btn:hover {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
}

.season-btn[aria-expanded="true"] {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
  background: rgba(255, 198, 26, .1);
}

.season-btn-label {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--board-blue);
}

.season-btn-value {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.season-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 120;
  min-width: 172px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  background: var(--pitch-mid);
  border: 1px solid var(--line-green);
  border-radius: var(--radius-md);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .45);
}

.season-panel[hidden] { display: none; }

.season-option {
  appearance: none;
  text-align: left;
  background: transparent;
  border: 1px solid transparent;
  color: var(--grid-grey);
  font-size: 14px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.season-option:hover {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
}

.season-option[aria-pressed="true"] {
  background: var(--card-yellow);
  color: var(--ink);
  font-weight: 700;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: transparent;
  border: 1px solid var(--line-green);
  color: var(--pitch-soft);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.nav-toggle:hover {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--card-red);
  background: rgba(204, 43, 34, .22);
  color: #fff;
}

.nav-bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px;
  height: 12px;
}

.nav-bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
}

@media (max-width: 620px) {
  .season-btn-label { display: none; }
}

@media (max-width: 400px) {
  .nav-toggle-text { display: none; }
}

/* --- 滚动进度 --- */
.scroll-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  overflow: hidden;
}

.progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--card-yellow), var(--card-red));
  transition: width 90ms linear;
}

/* ===================================================================
   页脚
   =================================================================== */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--pitch-mid), var(--pitch-deep));
  border-top: 1px solid var(--line-green);
  color: var(--pitch-soft);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0;
  width: min(240px, 40vw);
  height: 3px;
  background: var(--card-yellow);
}

.footer-inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1.15fr 2fr 1.15fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.footer-mark {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  height: 40px;
  margin-bottom: 16px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--paper);
}

.footer-brand-line {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--board-blue);
}

.footer-note {
  margin: 14px 0 20px;
  max-width: 27em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grid-grey);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.footer-col { min-width: 0; }

.footer-col-title {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--card-yellow);
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-link {
  display: inline-block;
  font-size: 14px;
  color: var(--grid-grey);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.footer-link:hover {
  color: var(--card-yellow);
  border-bottom-color: var(--card-yellow);
}

.footer-link[aria-current="page"] {
  color: var(--card-yellow);
  border-bottom-color: var(--card-red);
}

.footer-contact {
  display: flex;
  flex-direction: column;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-row {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
}

.contact-label {
  min-width: 34px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--board-blue);
}

.contact-value {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--paper);
  word-break: break-all;
}

.contact-value--plain {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--grid-grey);
  word-break: normal;
}

.copy-btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-green);
  color: var(--board-blue);
  border-radius: var(--radius-pill);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 3px 10px;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}

.copy-btn:hover {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
}

.copy-btn[data-copied="true"] {
  border-color: var(--card-yellow);
  background: var(--card-yellow);
  color: var(--ink);
  font-weight: 700;
}

.contact-note {
  margin-top: 16px;
  max-width: 28em;
  font-size: 13px;
  line-height: 1.8;
  color: var(--board-blue);
}

.copy-status {
  min-height: 1.5em;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--card-yellow);
}

.footer-bottom {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 16px var(--gutter) 24px;
  border-top: 1px solid rgba(46, 111, 82, .5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--board-blue);
}

.footer-legal { margin: 0; }

.footer-icp {
  margin: 0;
  font-family: var(--font-mono);
}

@media (max-width: 1024px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ===================================================================
   通用容器与栅格
   =================================================================== */
.container {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.container--wide { max-width: 1520px; }
.container--tight { max-width: 760px; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.4vw, 32px);
}

.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-12 { grid-column: span 12; }

@media (max-width: 960px) {
  .span-3, .span-4, .span-5, .span-6,
  .span-7, .span-8, .span-9 { grid-column: span 6; }
}

@media (max-width: 620px) {
  .span-3, .span-4, .span-5, .span-6,
  .span-7, .span-8, .span-9 { grid-column: span 12; }
}

.divider {
  height: 1px;
  border: 0;
  margin: clamp(24px, 4vw, 48px) 0;
  background: linear-gradient(90deg, var(--line-green), rgba(46, 111, 82, 0));
}

/* ===================================================================
   面包屑
   =================================================================== */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 16px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--board-blue);
}

.breadcrumb-item {
  color: var(--board-blue);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.breadcrumb-item:hover { color: var(--card-yellow); }

.breadcrumb-item[aria-current="page"] {
  color: var(--grid-grey);
  border-bottom: 1px solid var(--card-red);
}

.breadcrumb-sep { color: var(--line-green); }

/* ===================================================================
   按钮
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--yellow {
  background: var(--card-yellow);
  color: var(--ink);
}

.btn--yellow:hover { background: #FFD451; }

.btn--red {
  background: var(--card-red);
  color: #fff;
}

.btn--red:hover { background: #E0362D; }

.btn--outline {
  border-color: var(--line-green);
  color: var(--pitch-soft);
}

.btn--outline:hover {
  border-color: var(--card-yellow);
  color: var(--card-yellow);
}

.btn--sm {
  padding: 9px 17px;
  font-size: 13px;
}

/* ===================================================================
   章节头
   =================================================================== */
.section { padding: clamp(40px, 6vw, 88px) 0; }
.section--tight { padding-top: clamp(22px, 3vw, 40px); }
.section--flush { padding-bottom: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--card-yellow);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--card-red);
}

.section-title {
  margin-bottom: 14px;
  font-size: clamp(28px, 4.6vw, 46px);
  letter-spacing: .04em;
}

.section-note {
  max-width: 42em;
  font-size: 14px;
  color: var(--board-blue);
}

/* ===================================================================
   面板 / 卡片
   =================================================================== */
.panel {
  background: var(--pitch-mid);
  border: 1px solid rgba(46, 111, 82, .7);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 34px);
}

.panel--paper {
  background: var(--paper);
  border-color: var(--grid-grey);
  color: var(--ink);
}

.panel--paper h1,
.panel--paper h2,
.panel--paper h3,
.panel--paper .section-title { color: var(--ink); }

.panel--paper .section-note,
.panel--paper .card-text { color: #43535C; }

.panel--bleed {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  margin-right: calc(-1 * var(--gutter));
}

.card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--pitch-mid);
  border: 1px solid rgba(46, 111, 82, .75);
  border-radius: var(--radius-lg);
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.card:hover {
  border-color: var(--card-yellow);
  background: #144735;
}

.card-title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--paper);
}

.card-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--board-blue);
}

.stat-card {
  position: relative;
  overflow: hidden;
  padding: 22px 24px;
  background: var(--pitch-mid);
  border: 1px solid rgba(46, 111, 82, .75);
  border-radius: var(--radius-lg);
}

.stat-card::after {
  content: "";
  position: absolute;
  right: -32px;
  top: -32px;
  width: 104px;
  height: 104px;
  border: 1px solid rgba(46, 111, 82, .6);
  border-radius: 50%;
  pointer-events: none;
}

/* 对照带 */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  background: var(--line-green);
  border: 1px solid var(--line-green);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.stat-strip__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--pitch-mid);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--card-yellow);
  font-variant-numeric: tabular-nums;
}

.stat-value--red { color: var(--card-red); }
.stat-value--plain { color: var(--paper); }

.stat-label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--board-blue);
}

/* ===================================================================
   数据表
   =================================================================== */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: rgba(18, 64, 47, .55);
  border: 1px solid var(--line-green);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.data-table caption {
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--board-blue);
  border-bottom: 1px solid var(--line-green);
}

.data-table th,
.data-table td {
  padding: 11px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid rgba(46, 111, 82, .5);
}

.data-table thead th {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--board-blue);
  background: rgba(11, 46, 35, .6);
}

.data-table td.num,
.data-table th.num { text-align: right; }

.data-table tbody tr:hover { background: rgba(255, 198, 26, .08); }
.data-table tbody tr:last-child td { border-bottom: 0; }

.panel--paper .table-wrap {
  background: #fff;
  border-color: var(--grid-grey);
}

.panel--paper .data-table { color: var(--ink); }

.panel--paper .data-table th,
.panel--paper .data-table td { border-bottom-color: var(--grid-grey); }

.panel--paper .data-table thead th {
  color: #43535C;
  background: var(--pitch-soft);
}

.panel--paper .data-table tbody tr:nth-child(even) { background: var(--pitch-soft); }

/* ===================================================================
   标签 / 胶囊
   =================================================================== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border: 1px solid var(--line-green);
  border-radius: var(--radius-pill);
  background: rgba(11, 46, 35, .5);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--board-blue);
}

.chip--yellow {
  background: var(--card-yellow);
  border-color: var(--card-yellow);
  color: var(--ink);
  font-weight: 700;
}

.chip--red {
  background: var(--card-red);
  border-color: var(--card-red);
  color: #fff;
  font-weight: 700;
}

.chip--blue {
  background: rgba(143, 166, 184, .16);
  border-color: var(--board-blue);
  color: var(--grid-grey);
}

.tag {
  display: inline-block;
  padding: 2px 10px;
  border: 1px dashed rgba(143, 166, 184, .6);
  border-radius: var(--radius-pill);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--board-blue);
}

.meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--board-blue);
}

/* ===================================================================
   折叠抽屉
   =================================================================== */
.drawer {
  background: rgba(18, 64, 47, .5);
  border: 1px solid var(--line-green);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.drawer + .drawer { margin-top: 10px; }

.drawer-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--grid-grey);
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.drawer-summary::-webkit-details-marker { display: none; }

.drawer-summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--card-yellow);
}

.drawer[open] .drawer-summary::after { content: "–"; }

.drawer-summary:hover {
  background: rgba(46, 111, 82, .4);
  color: var(--paper);
}

.drawer-body {
  padding: 4px 18px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--board-blue);
}

/* ===================================================================
   正文 / 注释 / 目录
   =================================================================== */
.prose {
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
}

.prose p { margin-bottom: 1.2em; }

.prose h2,
.prose h3 {
  margin: 1.6em 0 .6em;
  color: var(--paper);
}

.prose h3 { font-size: 20px; }

.prose ul,
.prose ol {
  margin: 0 0 1.2em;
  padding-left: 1.25em;
  list-style: disc;
}

.prose li { margin-bottom: .4em; }

.prose a {
  color: var(--card-yellow);
  text-decoration: none;
  border-bottom: 1px solid var(--line-green);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.prose a:hover {
  color: #fff;
  border-bottom-color: var(--card-red);
}

.note {
  max-width: 42em;
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--card-yellow);
  font-size: 14px;
  line-height: 1.8;
  color: var(--board-blue);
}

.note--red { border-left-color: var(--card-red); }

.toc {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

.toc-link {
  display: block;
  padding-left: 12px;
  border-left: 2px solid transparent;
  color: var(--board-blue);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.toc-link:hover {
  color: var(--card-yellow);
  border-left-color: var(--card-yellow);
}

.toc-link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--card-red);
}

/* 轮次分隔 */
.round-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: clamp(28px, 4vw, 52px) 0 18px;
  color: var(--board-blue);
}

.round-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-green), rgba(46, 111, 82, 0));
}

.round-marker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--card-yellow);
}

/* ===================================================================
   图片容器
   =================================================================== */
.image-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid rgba(46, 111, 82, .7);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(46, 111, 82, .35), rgba(11, 46, 35, .92));
}

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

.image-frame--16x9 { aspect-ratio: 16 / 9; }
.image-frame--4x3 { aspect-ratio: 4 / 3; }
.image-frame--1x1 { aspect-ratio: 1 / 1; }
.image-frame--3x4 { aspect-ratio: 3 / 4; }
.image-frame--wide { aspect-ratio: 21 / 9; }
.image-frame--bleed { margin-inline: calc(-1 * var(--gutter)); border-radius: 0; }

.image-frame--placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(143, 166, 184, .14) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(90deg, rgba(143, 166, 184, .14) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.image-frame figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 16px 12px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grid-grey);
  background: linear-gradient(180deg, rgba(11, 46, 35, 0), rgba(11, 46, 35, .92));
}

/* ===================================================================
   进入视口
   =================================================================== */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

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

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .progress-bar { transition: none; }
}