/* ==========================================================================
   site.css · 乐竞体育站 共享外壳
   记分牌框架 + 暖纸档案
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --ink: #0E1B2A;
  --ink-deep: #111318;
  --red: #E5322D;
  --red-deep: #C42622;
  --cyan: #26D9D3;
  --cyan-ink: #0E8F8B;
  --yellow: #F5E63D;
  --paper: #F3E9DA;
  --paper-warm: #EADCC8;
  --paper-edge: #DCC9B3;
  --slate: #6A7480;
  --green: #2FBF8F;
  --white: #FFFFFF;

  --font-display: 'Noto Sans SC Condensed', 'Source Han Sans SC Heavy', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-mono: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;

  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 2px;

  --h1: clamp(44px, 8vw, 120px);
  --h2: clamp(28px, 4vw, 56px);
  --step-0: clamp(16px, 1.4vw, 18px);
  --step-1: clamp(20px, 2vw, 24px);

  --shadow-card: 0 1px 0 var(--paper-edge), 0 12px 28px -22px rgba(14, 27, 42, .75);
  --shadow-panel: 0 18px 40px -32px rgba(14, 27, 42, .95);
}

/* ---------- 2. 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-deep);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; }

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

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

/* ---------- 3. 排版工具 ---------- */
.h-display {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--h1);
  line-height: .92;
  letter-spacing: -.02em;
}

.h-section {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--h2);
  line-height: 1.04;
  letter-spacing: -.01em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--red);
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 26px;
  height: 3px;
  background: var(--red);
}

.lede {
  max-width: 62ch;
  font-size: clamp(17px, 1.9vw, 21px);
  line-height: 1.7;
  color: var(--ink);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.03em;
}

.prose {
  max-width: 68ch;
}

.prose p + p { margin-top: 1em; }

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(40px, 6vw, 88px);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 32px);
}

.grid-split {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.45fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: start;
}

@media (max-width: 900px) {
  .grid-split { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }
}

/* ---------- 5. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.1;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--red {
  background: var(--red);
  color: var(--white);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .22);
}
.btn--red:hover { background: var(--red-deep); }

.btn--ink {
  background: var(--ink);
  color: var(--paper);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .35);
}
.btn--ink:hover { background: var(--ink-deep); }

.btn--cyan {
  background: var(--cyan);
  color: var(--ink);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .18);
}
.btn--cyan:hover { background: #1FC2BC; }

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

.btn--sm {
  padding: 9px 15px;
  font-size: 13px;
}

/* ---------- 6. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: transparent;
}

.tag--red { color: var(--red); }
.tag--cyan { color: var(--cyan-ink); }
.tag--ink { color: var(--ink); }
.tag--yellow {
  background: var(--yellow);
  color: var(--ink);
  border-color: transparent;
}

/* ---------- 7. 卡片 ---------- */
.card {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--white);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.card--paper { background: var(--paper-warm); }

.card--ink {
  background: var(--ink);
  color: var(--paper);
  border-color: rgba(243, 233, 218, .14);
  box-shadow: var(--shadow-panel);
}

.card__index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--slate);
}

.card--ink .card__index { color: var(--cyan); }

/* ---------- 8. 图片容器（页面阶段放占位图） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--ink);
  border-radius: var(--radius);
}

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

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--portrait { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--slant {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.media-frame--edge::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: var(--red);
}

.figure {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
}

.figure__caption {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--slate);
}

.figure__caption::before {
  content: "FIG";
  color: var(--red);
  font-weight: 700;
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
}

.breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-edge);
}

.breadcrumb a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--paper-edge);
}

/* ---------- 10. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: var(--gutter);
  top: 6px;
  z-index: 120;
  padding: 10px 18px;
  background: var(--yellow);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
  transform: translateY(-180%);
  transition: transform .18s ease;
}

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

/* ---------- 11. 头部：框架式记分牌 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 3px solid var(--red);
}

.frame-rail {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
  padding: 5px var(--gutter);
  overflow: hidden;
  background: var(--ink-deep);
  border-bottom: 1px solid rgba(243, 233, 218, .1);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  white-space: nowrap;
  color: rgba(243, 233, 218, .68);
}

.rail-mark {
  color: var(--cyan);
}

.rail-meta {
  color: rgba(243, 233, 218, .52);
}

.rail-util {
  margin-left: auto;
  color: var(--yellow);
}

.frame-main {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 10px var(--gutter);
}

.brand {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-left: 12px;
  color: var(--paper);
  text-decoration: none;
}

.brand::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--red);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -.02em;
  border-radius: var(--radius);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .2);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .02em;
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .16em;
  color: rgba(243, 233, 218, .55);
}

.site-nav {
  justify-self: end;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__list a {
  display: block;
  padding: 9px 12px;
  color: rgba(243, 233, 218, .82);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.site-nav__list a:hover {
  color: var(--white);
  background: rgba(38, 217, 211, .14);
  border-color: rgba(38, 217, 211, .45);
}

.site-nav__list a[aria-current="page"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 700;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .18);
}

.frame-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  background: var(--red);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  border-radius: var(--radius);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .22);
  transition: background-color .18s ease;
}

.frame-cta::after {
  content: "\2192";
  font-family: var(--font-mono);
  font-size: 13px;
}

.frame-cta:hover { background: var(--red-deep); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--ink-deep);
  color: var(--paper);
  border: 1px solid rgba(243, 233, 218, .3);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

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

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
}

.nav-toggle__bars i {
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
}

/* ---------- 12. 头部响应式 ---------- */
@media (max-width: 1080px) {
  .rail-meta { display: none; }
}

@media (max-width: 1000px) {
  .site-header { scroll-padding-top: 110px; }

  .frame-main {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .nav-toggle { display: inline-flex; }

  .frame-cta { display: none; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    justify-self: stretch;
    padding: 8px var(--gutter) 22px;
    max-height: calc(100vh - 96px);
    max-height: calc(100dvh - 96px);
    overflow-y: auto;
    background: var(--ink);
    border-top: 1px solid rgba(243, 233, 218, .14);
    border-bottom: 3px solid var(--red);
    box-shadow: 0 26px 44px -32px rgba(0, 0, 0, .95);
  }

  .site-nav[data-open] { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
  }

  .site-nav__list li + li { margin-top: 0; }

  .site-nav__list a {
    padding: 15px 10px;
    font-size: 16px;
    border: 0;
    border-bottom: 1px dashed rgba(243, 233, 218, .18);
    border-radius: 0;
  }

  .site-nav__list a[aria-current="page"] {
    color: var(--cyan);
    background: rgba(38, 217, 211, .14);
    box-shadow: inset 4px 0 0 var(--cyan);
  }
}

@media (max-width: 760px) {
  .rail-util { display: none; }

  .rail-mark {
    max-width: 70vw;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .brand__sub { display: none; }
}

/* ---------- 13. 页脚：档案索引 + 记分卡 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--paper);
  color: var(--ink-deep);
  border-top: 4px solid var(--ink);
}

.site-footer::before {
  content: "";
  display: block;
  height: 8px;
  background:
    repeating-linear-gradient(
      90deg,
      var(--red) 0 48px,
      var(--ink) 48px 96px,
      var(--cyan) 96px 144px,
      var(--yellow) 144px 192px
    );
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.05fr 1.6fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) var(--gutter) clamp(24px, 3vw, 40px);
}

.footer-brand__kicker {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .22em;
  color: var(--red);
}

.footer-brand__name {
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.01em;
}

.footer-brand__line {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 4px solid var(--cyan);
  font-family: var(--font-serif);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.footer-brand__meta {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--slate);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 36px);
}

.footer-group__title {
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--ink);
}

.footer-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-group li + li { margin-top: 8px; }

.footer-group a {
  display: inline-block;
  font-size: 14.5px;
  color: var(--ink-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}

.footer-group a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.footer-contact {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
}

.footer-contact .footer-group__title {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.footer-contact__list { margin: 0; }

.footer-contact__list div + div { margin-top: 12px; }

.footer-contact__list dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: rgba(243, 233, 218, .58);
}

.footer-contact__list dd {
  margin: 2px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.footer-contact__note {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(243, 233, 218, .22);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(243, 233, 218, .62);
}

.footer-contact__cta { margin-top: 16px; }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 16px var(--gutter) 30px;
  border-top: 1px solid var(--paper-edge);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--slate);
}

.footer-legal__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-legal__links a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--paper-edge);
  padding-bottom: 1px;
}

.footer-legal__links a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.footer-legal__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 1000px) {
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 14. 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(12px, 2.5vw, 28px);
  bottom: clamp(12px, 2.5vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--yellow);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .14em;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.to-top[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover { background: var(--cyan); }

/* ---------- 15. 渐显协议 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .26s ease, transform .26s ease;
}

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

/* ---------- 16. 深色 / 浅色分区快捷类 ---------- */
.on-ink {
  background: var(--ink);
  color: var(--paper);
}

.on-paper {
  background: var(--paper);
  color: var(--ink-deep);
}

/* ---------- 17. 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

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

  .to-top {
    opacity: 1;
    transform: none;
  }

  .btn:hover { transform: none; }
}