/* ==========================================================================
   亚星赛事 · 共享样式表 /assets/site.css
   风格轴：墨绿档案底 + 荧光青信号 + 电光黄数字 + 联赛识别色模块
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  text-underline-offset: 3px;
}

body,
h1, h2, h3, h4, h5, p,
ul, ol, li, figure, figcaption, blockquote,
dl, dd, details, summary, table {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

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

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

/* ---------- 2. 变量 ---------- */
:root {
  /* 基础色 */
  --ink-base: #0B1A17;
  --ink-layer: #10241F;
  --grid-line: #1E3A33;
  --cyan-signal: #35E0C8;
  --electric-yellow: #F2E24B;
  --paper-mist: #DCE7E3;
  --muted-slate: #8FA6A0;
  --focus-ring: #7FF3E4;

  /* 联赛识别色 */
  --league-epl: #B04A8A;
  --league-laliga: #E08A2E;
  --league-seriea: #4C86F0;
  --league-bundesliga: #E85A4F;

  /* 字体 */
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;

  /* 度量 */
  --shell-max: 1320px;
  --gutter: clamp(20px, 4.5vw, 56px);
  --line: 1px solid var(--grid-line);
  --radius: 2px;
  --shadow-soft: 0 1px 0 rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 14px 34px rgba(0, 0, 0, 0.38);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 200ms;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--ink-base);
  background-image:
    linear-gradient(to right, rgba(30, 58, 51, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 51, 0.42) 1px, transparent 1px),
    radial-gradient(120% 90% at 78% -10%, rgba(53, 224, 200, 0.10) 0%, rgba(11, 26, 23, 0) 62%);
  background-size: 88px 88px, 88px 88px, 100% 100%;
  background-attachment: fixed, fixed, fixed;
  color: var(--paper-mist);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--paper-mist);
}

h1 {
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1.06;
  letter-spacing: -0.012em;
}

h2 { font-size: clamp(1.4rem, 2.6vw, 2.1rem); }
h3 { font-size: clamp(1.05rem, 1.6vw, 1.3rem); font-weight: 700; line-height: 1.35; }
h4 { font-size: 1rem; font-weight: 700; }

p { max-width: 78ch; }

a { color: var(--cyan-signal); text-decoration: none; }
a:hover { text-decoration: underline; }

strong { font-weight: 700; color: var(--paper-mist); }

::selection { background: var(--cyan-signal); color: #04211C; }

[id] { scroll-margin-top: 132px; }

/* 等宽数字工具类 */
.num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

/* ---------- 4. 焦点与无障碍 ---------- */
:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.skip-link {
  position: absolute;
  left: 18px;
  top: -80px;
  z-index: 200;
  padding: 11px 20px;
  background: var(--cyan-signal);
  color: #04211C;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius);
  text-decoration: none;
  transition: top 180ms var(--ease);
}

.skip-link:focus { top: 14px; text-decoration: none; }

/* ---------- 5. 布局外壳 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

body > main { position: relative; z-index: 1; }

.stack > * + * { margin-top: clamp(18px, 2.4vw, 30px); }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 32px);
}

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

/* ---------- 6. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 26, 23, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: var(--line);
}

.caliber-bar {
  background: #081412;
  border-bottom: var(--line);
}

.caliber-bar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 34px;
  padding-block: 6px;
}

.caliber-bar__item {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted-slate);
}

.caliber-bar__key {
  color: #4d6b64;
  text-transform: uppercase;
}

.caliber-bar__key::after {
  content: "";
  display: inline-block;
  width: 12px;
  height: 1px;
  margin-left: 9px;
  vertical-align: 3px;
  background: var(--grid-line);
}

.caliber-bar__val { color: var(--paper-mist); }

.header-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(24px, 6vw, 120px);
  padding-block: 18px;
}

/* 品牌署名 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.brand:hover { text-decoration: none; }

.brand__mark {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border: 1px solid var(--grid-line);
  border-radius: 50%;
  transition: border-color var(--dur) var(--ease);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid transparent;
  border-top-color: var(--cyan-signal);
  border-right-color: var(--cyan-signal);
  border-radius: 50%;
  transform: rotate(-42deg);
}

.brand__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cyan-signal);
  transform: translate(-50%, -50%);
}

.brand:hover .brand__mark { border-color: var(--cyan-signal); }

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand__name {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  color: var(--paper-mist);
}

.brand__since {
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted-slate);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  color: var(--paper-mist);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 1px;
  background: var(--cyan-signal);
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background: var(--muted-slate);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5px) rotate(-45deg); }

/* 栏目索引 */
.site-nav { margin-left: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.1vw, 30px);
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  color: var(--paper-mist);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--cyan-signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.site-nav__link:hover { text-decoration: none; }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--cyan-signal); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* 移动 / 平板折叠 */
@media (max-width: 900px) {
  .header-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding-block: 14px;
  }

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

  .site-nav {
    grid-column: 1 / -1;
    margin-left: 0;
    display: none;
    padding-top: 6px;
    padding-bottom: 12px;
    border-top: var(--line);
  }

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

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

  .site-nav__link {
    display: block;
    padding: 13px 2px;
    font-size: 1rem;
    border-bottom: var(--line);
  }

  .site-nav__link::after { display: none; }

  .site-nav__link[aria-current="page"] { padding-left: 16px; }

  .site-nav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    background: var(--cyan-signal);
    transform: translateY(-50%);
  }
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 2;
  margin-top: auto;
  background: #07120F;
  border-top: var(--line);
  color: var(--muted-slate);
  font-size: 0.86rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: clamp(28px, 4vw, 60px);
  padding-block: clamp(44px, 6vw, 80px);
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 22px;
}

.footer-brand__name {
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  color: var(--paper-mist);
}

.footer-brand__note {
  font-family: var(--font-serif);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--muted-slate);
}

.footer-kicker {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-signal);
  margin-bottom: 16px;
}

.footer-statement {
  max-width: 34ch;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  line-height: 1.95;
  color: var(--muted-slate);
}

.footer-links {
  display: grid;
  gap: 10px;
}

.footer-links__item { display: block; }

.footer-links a {
  color: var(--paper-mist);
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-links a:hover {
  color: var(--cyan-signal);
  border-bottom-color: var(--cyan-signal);
  text-decoration: none;
}

.footer-contact {
  display: grid;
  gap: 14px;
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: #4d6b64;
}

.footer-contact__val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--paper-mist);
  word-break: break-word;
}

.footer-baseline {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 28px;
  padding-block: 22px;
  border-top: var(--line);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted-slate);
}

.footer-baseline__group { display: inline-block; }

@media (max-width: 980px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col--statement { grid-column: 1 / -1; }
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 24px; }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col--statement { grid-column: auto; }
  .footer-links { grid-template-columns: minmax(0, 1fr); }
  .footer-baseline { justify-content: flex-start; }
}

/* ---------- 8. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  background: transparent;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  color: var(--paper-mist);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.btn:hover {
  border-color: var(--cyan-signal);
  color: var(--cyan-signal);
  text-decoration: none;
}

.btn--primary {
  background: var(--cyan-signal);
  border-color: var(--cyan-signal);
  color: #04211C;
  font-weight: 700;
}

.btn--primary:hover {
  background: var(--focus-ring);
  border-color: var(--focus-ring);
  color: #04211C;
}

.btn--ghost { color: var(--muted-slate); }

/* ---------- 9. 面包屑 ---------- */
.breadcrumb {
  padding-block: 20px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--muted-slate);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted-slate);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--grid-line);
}

.breadcrumb a {
  color: var(--muted-slate);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.breadcrumb a:hover { color: var(--cyan-signal); }

/* ---------- 10. 正文容器与章节抬头 ---------- */
.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.7em; }
.prose p { color: var(--paper-mist); }
.prose .note,
.prose .muted { color: var(--muted-slate); font-size: 0.9rem; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan-signal);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--cyan-signal);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: clamp(24px, 3vw, 40px);
  border-bottom: var(--line);
}

.section-head__title { font-size: clamp(1.35rem, 2.4vw, 2rem); }

.section-head__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted-slate);
}

/* ---------- 11. 数据组件 ---------- */
.ledger { border-top: var(--line); }

.ledger__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 18px;
  padding: 13px 10px;
  border-bottom: var(--line);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.ledger__row:hover {
  background: rgba(53, 224, 200, 0.05);
  border-bottom-color: var(--cyan-signal);
}

.ledger__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--electric-yellow);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted-slate);
}

.tag--epl { color: #DE8CBB; border-color: rgba(176, 74, 138, 0.55); }
.tag--laliga { color: #EFA65E; border-color: rgba(224, 138, 46, 0.55); }
.tag--seriea { color: #8FB2F6; border-color: rgba(76, 134, 240, 0.55); }
.tag--bundesliga { color: #F68C82; border-color: rgba(232, 90, 79, 0.55); }

/* ---------- 12. 模块卡片 ---------- */
.card {
  background: var(--ink-layer);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 32px);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.card:hover {
  border-color: var(--cyan-signal);
  box-shadow: var(--shadow-lift);
}

.card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: var(--line);
}

.card--epl { border-top: 2px solid var(--league-epl); }
.card--laliga { border-top: 2px solid var(--league-laliga); }
.card--seriea { border-top: 2px solid var(--league-seriea); }
.card--bundesliga { border-top: 2px solid var(--league-bundesliga); }

/* ---------- 13. 图片容器 ---------- */
.figure {
  display: grid;
  gap: 10px;
  margin: 0;
}

.figure__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  background-color: #0d211c;
  background-image:
    linear-gradient(to right, rgba(30, 58, 51, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 51, 0.6) 1px, transparent 1px),
    linear-gradient(150deg, #122c26 0%, #0B1A17 78%);
  background-size: 40px 40px, 40px 40px, 100% 100%;
}

.figure__frame--tall { aspect-ratio: 4 / 5; }
.figure__frame--wide { aspect-ratio: 21 / 9; }
.figure__frame--square { aspect-ratio: 1 / 1; }

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

.figure__caption {
  font-family: var(--font-serif);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--muted-slate);
}

/* ---------- 14. 折叠口径说明 ---------- */
.caliber-fold {
  background: var(--ink-layer);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
}

.caliber-fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--muted-slate);
  transition: color var(--dur) var(--ease);
}

.caliber-fold__summary::-webkit-details-marker { display: none; }
.caliber-fold__summary::after { content: "＋"; color: var(--cyan-signal); }

.caliber-fold__summary:hover { color: var(--paper-mist); }

.caliber-fold[open] .caliber-fold__summary {
  color: var(--paper-mist);
  border-bottom: var(--line);
}

.caliber-fold[open] .caliber-fold__summary::after { content: "－"; }

.caliber-fold__body {
  padding: 14px 16px;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--muted-slate);
}

/* ---------- 15. 动效协议 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan-signal) 0%, var(--electric-yellow) 100%);
  pointer-events: none;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

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

/* ---------- 16. 偏好降级 ---------- */
@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;
  }

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

  .scroll-progress { display: none; }
}