/* ==========================================================================
   火博体育 · 共享样式表 /assets/site.css
   炭黑底噪 + 熔岩橙主场 + 电光青客场 + 粗野主义边框
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --ink-950: #0B0D0F;
  --ink-800: #15191D;
  --brown-900: #2A1B14;
  --brand: #FF5A1F;
  --brand-soft: #FF8A3D;
  --data: #16E0D2;
  --data-deep: #0B7C78;
  --cream: #F6E9D8;
  --warm: #FFF8EE;
  --ash: #9AA3A8;
  --alert: #FF3B30;

  --line: rgba(255, 248, 238, 0.14);
  --line-strong: rgba(255, 248, 238, 0.28);
  --cream-line: rgba(42, 27, 20, 0.18);

  --font-display: "Oswald", "Bebas Neue", "PingFang SC", "Hiragino Sans GB",
    "Source Han Sans SC", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular,
    Menlo, Consolas, "Courier New", monospace;

  --wrap: 1320px;
  --gutter: clamp(16px, 3vw, 40px);
  --gap: clamp(12px, 1.6vw, 20px);
  --radius: 0px;
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, 0.55);
  --t: 180ms ease-out;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.02em;
  color: var(--warm);
  background-color: var(--ink-950);
  background-image:
    linear-gradient(rgba(255, 248, 238, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 248, 238, 0.022) 1px, transparent 1px),
    radial-gradient(circle at 10% -8%, rgba(255, 90, 31, 0.16), transparent 46%),
    radial-gradient(circle at 92% 1%, rgba(22, 224, 210, 0.11), transparent 42%);
  background-size: 64px 64px, 64px 64px, auto, auto;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
  background-attachment: scroll;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

::selection {
  background: var(--brand);
  color: var(--ink-950);
}

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

/* ---------- 3. 基础排版 ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 900; line-height: 1.05; letter-spacing: -0.01em; }
p { text-wrap: pretty; }
strong { color: var(--brand); font-weight: 700; }

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 300;
  transform: translateY(-140%);
  background: var(--brand);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 12px 20px;
  text-decoration: none;
  border: 2px solid var(--ink-950);
}
.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 5. 主体区域 ---------- */
.site-main {
  display: block;
  min-height: 50vh;
}

/* ---------- 6. 页头：居中刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink-950);
  border-bottom: 1px solid var(--line-strong);
}

.site-header::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--brand) 0 38%,
    var(--data) 38% 62%,
    var(--brand-soft) 62% 100%
  );
}

.header-rail {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.rail {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.rail--end { justify-content: flex-end; }

.rail-link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ash);
  text-decoration: none;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color var(--t), border-color var(--t), background-color var(--t);
}
.rail-link:hover {
  color: var(--warm);
  background: var(--ink-800);
  border-color: var(--line-strong);
}

.rail-link--solid {
  color: var(--ink-950);
  background: var(--brand);
  border-color: var(--brand);
  font-weight: 700;
}
.rail-link--solid:hover {
  background: var(--brand-soft);
  border-color: var(--brand-soft);
  color: var(--ink-950);
}

.rail-num { color: var(--brand); margin-right: 6px; }
.rail-link--solid .rail-num { color: var(--ink-950); }

/* 刊头 */
.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  line-height: 1;
  padding: 2px 10px;
  transition: transform var(--t);
}
.masthead:hover { transform: translateY(-1px); }

.masthead__name {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.1vw, 2.3rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--warm);
}

.masthead__rule {
  display: block;
  width: clamp(96px, 20vw, 220px);
  height: 2px;
  margin: 7px 0 6px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
}

.masthead__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ash);
  white-space: nowrap;
}

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--warm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: border-color var(--t), color var(--t), background-color var(--t);
}
.nav-toggle:hover { border-color: var(--brand); color: var(--brand); }
.nav-toggle[aria-expanded="true"] { border-color: var(--brand); color: var(--brand); background: rgba(255, 90, 31, 0.1); }

.nav-toggle__bars { display: grid; gap: 3px; }
.nav-toggle__bars i {
  display: block;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform var(--t), opacity var(--t);
}
.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); }

/* 主导航（编号章节条） */
.site-nav {
  max-width: var(--wrap);
  margin: 0 auto;
  border-top: 1px solid var(--line);
}

.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 2px;
}

.site-nav__item { display: flex; }

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 18px;
  text-decoration: none;
  color: var(--ash);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-bottom: 3px solid transparent;
  transition: color var(--t), background-color var(--t), border-color var(--t);
}
.site-nav__link:hover {
  color: var(--warm);
  background: var(--ink-800);
  border-bottom-color: var(--brand-soft);
}
.site-nav__link[aria-current="page"] {
  color: var(--warm);
  background: rgba(255, 90, 31, 0.09);
  border-bottom-color: var(--brand);
}

.site-nav__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--brand);
}

/* 滚动进度条 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--brand), var(--brand-soft) 45%, var(--data));
  z-index: 2;
  transition: width 90ms linear;
}

/* ---------- 7. 页脚：深棕黑复古出版区 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 110px);
  background: var(--brown-900);
  color: var(--cream);
  border-top: 3px solid var(--brand);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(246, 233, 216, 0.05) 0 1px,
    transparent 1px 96px
  );
}

.footer-grid {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(36px, 6vw, 72px) var(--gutter) clamp(24px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: clamp(28px, 4vw, 56px);
}

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

.footer-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--data);
  margin-bottom: 14px;
}

.footer-title {
  font-size: clamp(1.35rem, 2.7vw, 2rem);
  font-weight: 900;
  line-height: 1.15;
  color: var(--warm);
  margin-bottom: 14px;
}

.footer-text {
  color: rgba(246, 233, 216, 0.74);
  font-size: 14.5px;
  line-height: 1.75;
  max-width: 46ch;
  margin-bottom: 22px;
}

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

.footer-col__title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 16px;
}

.footer-links {
  display: grid;
  gap: 9px;
}

.footer-links a {
  display: inline-block;
  color: rgba(246, 233, 216, 0.82);
  font-size: 14.5px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t), padding-left var(--t);
}
.footer-links a:hover {
  color: var(--warm);
  border-bottom-color: var(--data);
  padding-left: 4px;
}

.footer-contact {
  font-style: normal;
  display: grid;
  gap: 12px;
}

.footer-contact__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(246, 233, 216, 0.86);
  line-height: 1.6;
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--brand);
  min-width: 44px;
  padding-top: 3px;
  flex: none;
}

.footer-contact__value { word-break: break-word; }

.footer-note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(246, 233, 216, 0.56);
  border-left: 2px solid var(--brand);
  padding-left: 12px;
  max-width: 44ch;
}

.footer-bottom {
  position: relative;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter) 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  border-top: 1px solid rgba(246, 233, 216, 0.16);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(246, 233, 216, 0.6);
}
.footer-bottom p { margin: 0; }
.footer-icp { color: rgba(246, 233, 216, 0.78); }

/* ---------- 8. 通用容器与章节 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(40px, 7vw, 88px); }
.section--tight { padding-block: clamp(24px, 4vw, 48px); }

.section--cream {
  background: var(--cream);
  color: var(--brown-900);
}
.section--ink { background: var(--ink-800); }

.section__head {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 28px);
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 36px);
  border-bottom: 1px solid var(--line-strong);
}
.section--cream .section__head { border-bottom-color: var(--cream-line); }

.section__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 0.85;
  color: var(--brand);
  font-variant-numeric: tabular-nums;
}

.section__title {
  font-size: clamp(1.4rem, 3.4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.06;
  color: var(--warm);
  margin: 0;
}
.section--cream .section__title { color: var(--brown-900); }

.section__lead {
  margin-left: auto;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ash);
}
.section--cream .section__lead { color: rgba(42, 27, 20, 0.7); }

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

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px var(--gutter) 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ash);
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--brand);
}
.breadcrumbs a { color: var(--ash); text-decoration: none; transition: color var(--t); }
.breadcrumbs a:hover { color: var(--warm); }
.breadcrumbs [aria-current="page"] { color: var(--warm); }

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border: 1px solid var(--brand);
  border-radius: var(--radius);
  background: var(--brand);
  color: var(--ink-950);
  font-weight: 700;
  font-size: 14.5px;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: background-color var(--t), color var(--t), border-color var(--t),
    transform var(--t), box-shadow var(--t);
}
.btn:hover {
  background: var(--brand-soft);
  border-color: var(--brand-soft);
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
}

.btn--ghost {
  background: transparent;
  color: var(--warm);
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  background: rgba(22, 224, 210, 0.08);
  border-color: var(--data);
  color: var(--data);
}

.btn--data {
  background: var(--data);
  border-color: var(--data);
  color: var(--ink-950);
}
.btn--data:hover {
  background: #3ff0e3;
  border-color: #3ff0e3;
}

.btn--cream {
  background: var(--cream);
  border-color: var(--cream);
  color: var(--brown-900);
}
.btn--cream:hover {
  background: var(--warm);
  border-color: var(--warm);
  color: var(--brown-900);
}

/* ---------- 11. 数据与标签 ---------- */
.data-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
  margin-bottom: 8px;
}

.data-figure {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--warm);
}
.data-figure--brand { color: var(--brand); }
.data-figure--data { color: var(--data); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 5px 9px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  white-space: nowrap;
}
.tag--home { color: var(--brand); }
.tag--away { color: var(--data); }

/* ---------- 12. Bento 网格 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.bento__cell {
  grid-column: span 4;
  position: relative;
  padding: clamp(16px, 2vw, 26px);
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  min-width: 0;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t);
}
.bento__cell:hover {
  transform: translate(-2px, -2px);
  border-color: var(--brand);
  box-shadow: var(--shadow-hard);
}

.bento__cell--wide { grid-column: span 8; }
.bento__cell--half { grid-column: span 6; }
.bento__cell--third { grid-column: span 4; }
.bento__cell--full { grid-column: span 12; }

.bento__cell--accent {
  background:
    linear-gradient(150deg, rgba(255, 90, 31, 0.18), rgba(255, 90, 31, 0) 62%),
    var(--ink-800);
}
.bento__cell--data {
  background:
    linear-gradient(150deg, rgba(22, 224, 210, 0.15), rgba(22, 224, 210, 0) 62%),
    var(--ink-800);
}
.bento__cell--accent:hover { border-color: var(--brand); }
.bento__cell--data:hover { border-color: var(--data); }

/* ---------- 13. 图片容器 ---------- */
.figure-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background-color: var(--ink-800);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255, 90, 31, 0.08) 0 10px,
    rgba(22, 224, 210, 0.06) 10px 20px,
    transparent 20px 30px
  );
}
.figure-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--data));
}

.figure-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure-frame--ratio-16x9 { aspect-ratio: 16 / 9; }
.figure-frame--ratio-4x3 { aspect-ratio: 4 / 3; }
.figure-frame--ratio-1x1 { aspect-ratio: 1 / 1; }

.figure-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 12px 14px;
  background: linear-gradient(0deg, rgba(11, 13, 15, 0.92), rgba(11, 13, 15, 0));
  color: var(--warm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- 14. 布局工具 ---------- */
.stack { display: grid; gap: var(--gap); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* ---------- 15. 显现微交互 ---------- */
[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 260ms ease-out, transform 260ms ease-out;
}
[data-js="on"] [data-reveal="in"] {
  opacity: 1;
  transform: none;
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1180px) {
  .bento__cell { grid-column: span 6; }
  .bento__cell--wide { grid-column: span 12; }
  .bento__cell--half { grid-column: span 6; }
  .bento__cell--third { grid-column: span 6; }

  .footer-grid { grid-template-columns: 1.4fr 1fr; }
  .footer-col--contact { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .rail-link { display: none; }
  .nav-toggle { display: inline-flex; }

  .header-rail { padding: 12px var(--gutter); gap: 8px; }

  .masthead { align-items: center; padding: 0 6px; }
  .masthead__tag { font-size: 9px; letter-spacing: 0.22em; }

  .site-nav {
    display: none;
    border-top: 1px solid var(--line);
    background: var(--ink-800);
  }
  .site-nav[data-open] {
    display: block;
    animation: nav-drop 200ms ease-out;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--gutter) 16px;
  }
  .site-nav__item { display: block; }
  .site-nav__link {
    width: 100%;
    padding: 15px 4px 15px 12px;
    border-bottom: 1px solid var(--line);
    border-left: 3px solid transparent;
    font-size: 15px;
  }
  .site-nav__link:hover { border-bottom-color: var(--line); }
  .site-nav__link[aria-current="page"] {
    border-bottom-color: var(--line);
    border-left-color: var(--brand);
    background: rgba(255, 90, 31, 0.08);
  }

  .section__lead { margin-left: 0; max-width: none; }
}

@keyframes nav-drop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

@media (max-width: 760px) {
  .bento__cell,
  .bento__cell--wide,
  .bento__cell--half,
  .bento__cell--third,
  .bento__cell--full { grid-column: span 12; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--contact { grid-column: auto; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 420px) {
  .masthead__tag { display: none; }
  .masthead__rule { margin: 6px 0 0; }
  .nav-toggle__text { display: none; }
}

/* ---------- 17. 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;
  }

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

  .bento__cell:hover,
  .btn:hover,
  .masthead:hover { transform: none; }
}