/* ==========================================================================
   火博体育赛场 — /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ========================================================================== */

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

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

h1, h2, h3, h4 { text-wrap: balance; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink:         #0E1113;
  --panel:       #171C1F;
  --panel-2:     #1D2427;
  --line:        #2A3134;

  --orange:      #FF6A1A;
  --orange-soft: #FFB27A;
  --blue:        #2E7BF6;
  --blue-soft:   #7FD4FF;
  --green:       #4C9A5B;
  --moss:        #8A9B6E;
  --clay:        #C97B4A;

  --paper:       #F2EDE4;
  --paper-dim:   #DCD6CC;
  --muted:       #A9AEB2;

  --font-sans: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", Arial, sans-serif;
  --font-serif: Georgia, "Songti SC", "Noto Serif SC", "SimSun", serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1240px;
  --gutter: 20px;

  --shadow-hard: 5px 5px 0 rgba(0, 0, 0, 0.55);
  --shadow-soft: 3px 3px 0 rgba(0, 0, 0, 0.4);
  --dur: 0.18s;
}

/* ---------- 3. 焦点与可达性 ---------- */
:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  top: -72px;
  left: 14px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--orange);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: 2px solid var(--ink);
  transition: top var(--dur) ease;
}

.skip-link:focus {
  top: 14px;
}

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

/* ==========================================================================
   5. 头部
   ========================================================================== */
.site-header {
  position: relative;
  z-index: 40;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

/* --- 5.1 报头栏 --- */
.header-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  padding-block: 18px 14px;
}

.live-status {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--green);
}

.live-dot {
  width: 8px;
  height: 8px;
  flex: none;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(76, 154, 91, 0.16);
  animation: hb-pulse 2.4s ease-in-out infinite;
}

@keyframes hb-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}

/* --- 5.2 字标 --- */
.brand {
  justify-self: center;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--dur) ease, transform var(--dur) ease;
}

.brand:hover,
.brand:focus-visible {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.brand-mark {
  font-size: clamp(1.25rem, 2.4vw, 1.72rem);
  font-weight: 800;
  letter-spacing: 0.09em;
  line-height: 1.05;
  color: var(--paper);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--moss);
  white-space: nowrap;
}

/* --- 5.3 工具组 --- */
.bar-tools {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-search {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color var(--dur) ease, background var(--dur) ease,
              transform var(--dur) ease;
}

.search-key {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--blue-soft);
}

.search-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.header-search:hover,
.header-search:focus-visible {
  border-color: var(--blue);
  background: #1B2530;
  transform: translateY(-2px);
}

/* --- 5.4 移动导航按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.14em;
  transition: border-color var(--dur) ease, background var(--dur) ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--orange);
  background: var(--panel-2);
}

.nav-toggle-bars {
  position: relative;
  width: 16px;
  height: 2px;
  flex: none;
  background: var(--orange);
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--orange);
}

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

/* --- 5.5 居中栏目条 --- */
.site-nav {
  border-top: 1px solid var(--line);
  background: #101416;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: stretch;
}

.nav-list li {
  border-left: 1px solid var(--line);
}

.nav-list li:last-child {
  border-right: 1px solid var(--line);
}

.nav-list a {
  display: block;
  padding: 12px 24px;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--muted);
  position: relative;
  transition: color var(--dur) ease, background var(--dur) ease;
}

.nav-list a:hover {
  color: var(--paper);
  background: var(--panel);
}

.nav-list a[aria-current="page"] {
  color: var(--ink);
  background: var(--orange);
  font-weight: 700;
}

/* --- 5.6 比分滚动带 --- */
.score-ribbon {
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding-block: 8px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.ribbon-track {
  display: flex;
  width: max-content;
  animation: hb-ribbon 52s linear infinite;
}

@keyframes hb-ribbon {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.ribbon-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-inline: 20px;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
}

.ribbon-tag {
  color: var(--green);
  font-weight: 700;
}

.ribbon-score {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.08em;
}

/* ==========================================================================
   6. 页脚
   ========================================================================== */
.site-footer {
  margin-top: 80px;
  background: #0A0D0E;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 34px;
  padding-block: 54px 38px;
}

.footer-brand {
  display: inline-block;
  padding-bottom: 9px;
  border-bottom: 3px solid var(--clay);
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  color: var(--paper);
}

.footer-text {
  margin-top: 14px;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.footer-text--micro {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--moss);
}

.footer-title {
  margin-bottom: 15px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.footer-list li {
  margin-bottom: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

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

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

.footer-list--plain li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
  overflow-wrap: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 18px 28px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-legal a {
  color: var(--muted);
  transition: color var(--dur) ease;
}

.footer-legal a:hover,
.footer-legal a:focus-visible {
  color: var(--blue-soft);
}

.to-top {
  padding: 8px 15px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  transition: border-color var(--dur) ease, color var(--dur) ease,
              transform var(--dur) ease;
}

.to-top:hover,
.to-top:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
  transform: translateY(-2px);
}

/* ==========================================================================
   7. 通用组件
   ========================================================================== */

/* --- 7.1 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
  transition: transform var(--dur) ease, background var(--dur) ease,
              border-color var(--dur) ease, color var(--dur) ease,
              box-shadow var(--dur) ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translate(-2px, -2px);
  border-color: var(--orange-soft);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.55);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
  font-weight: 800;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
}

.btn--quiet {
  background: transparent;
  box-shadow: none;
  border-color: var(--line);
  color: var(--blue-soft);
}

.btn--quiet:hover,
.btn--quiet:focus-visible {
  border-color: var(--blue);
  color: var(--paper);
  transform: translateY(-2px);
  box-shadow: none;
}

/* --- 7.2 面包屑 --- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  padding-block: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li::after {
  content: "/";
  margin-inline: 9px;
  color: var(--line);
}

.breadcrumb li:last-child::after {
  content: "";
  margin: 0;
}

.breadcrumb a {
  color: var(--blue-soft);
  transition: color var(--dur) ease;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--paper);
}

/* --- 7.3 章节骨架 --- */
.section {
  margin-top: 68px;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 24px;
}

.section-title {
  position: relative;
  padding-bottom: 11px;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.25;
  color: var(--paper);
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 54px;
  height: 3px;
  background: var(--clay);
}

.eyebrow {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--blue-soft);
}

.lead {
  max-width: 62ch;
  font-size: clamp(1.02rem, 1.5vw, 1.16rem);
  line-height: 1.8;
  color: var(--paper-dim);
}

/* --- 7.4 Bento 栅格 --- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

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

@media (min-width: 768px) {
  .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; }
}

/* --- 7.5 卡片 --- */
.card {
  position: relative;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) ease, border-color var(--dur) ease,
              box-shadow var(--dur) ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--orange-soft);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.6);
}

.card--data:hover { border-color: var(--orange); }
.card--read:hover { border-color: var(--blue); }

/* --- 7.6 图片容器（页面阶段放置图片） --- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: var(--panel);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.06);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(14, 17, 19, 0) 40%, rgba(14, 17, 19, 0.85) 100%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 3px);
}

.media-frame figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

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

/* --- 7.7 标签与数字 --- */
.tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.tag--orange { color: var(--orange);    border-color: rgba(255, 106, 26, 0.42); }
.tag--blue   { color: var(--blue-soft); border-color: rgba(46, 123, 246, 0.42); }
.tag--green  { color: var(--green);     border-color: rgba(76, 154, 91, 0.42); }

.stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.4em;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.stat-num .unit {
  margin-left: 0.08em;
  font-size: 0.62em;
  font-weight: 500;
  color: var(--muted);
}

/* --- 7.8 进入显现协议 --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.38s ease, transform 0.38s ease;
}

[data-reveal="in"] {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   8. 响应式
   ========================================================================== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    padding-block: 46px 32px;
  }
}

@media (max-width: 901px) {
  .live-status {
    display: none;
  }

  .header-bar {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding-block: 14px 12px;
  }

  .brand {
    justify-self: start;
    padding: 7px 13px;
    gap: 9px;
  }

  .brand-sub {
    display: none;
  }

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

  .site-nav {
    display: none;
  }

  .site-nav[data-open] {
    display: block;
    animation: hb-nav-in 0.18s ease-out;
  }

  .nav-list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .nav-list li {
    border-left: 0;
    border-right: 0;
    border-top: 1px solid var(--line);
  }

  .nav-list li:first-child {
    border-top: 0;
  }

  .nav-list a {
    padding: 15px 20px;
    font-size: 15px;
  }
}

@keyframes hb-nav-in {
  from { opacity: 0; transform: translateY(-5px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .header-search .search-hint {
    display: none;
  }

  .header-search {
    padding: 9px 12px;
  }

  .score-ribbon {
    padding-block: 6px;
  }

  .ribbon-item {
    padding-inline: 14px;
    font-size: 11px;
  }

  .section {
    margin-top: 52px;
  }

  .site-footer {
    margin-top: 60px;
  }
}

@media (max-width: 600px) {
  :root {
    --gutter: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-block: 38px 26px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-legal {
    gap: 16px;
  }

  .card {
    padding: 18px;
  }
}

/* ==========================================================================
   9. 减少动态偏好
   ========================================================================== */
@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;
  }

  .ribbon-track {
    width: auto;
    flex-wrap: wrap;
    animation: none;
    transform: none;
  }

  .live-dot {
    animation: none;
  }

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