/* ===== 开心体育 共享样式 /assets/site.css ===== */

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

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

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

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

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

button {
  font: inherit;
  color: inherit;
}

/* 2. 变量 */
:root {
  --ink: #0B0E14;
  --panel: #141A26;
  --line: #26303F;
  --paper: #F2F5F9;
  --silver: #A7B2C3;
  --orange: #FF6B2C;
  --blue: #1E90FF;
  --lime: #39FF14;
  --blue-deep: #0F5FBF;
  --orange-soft: #FFB489;

  --shell: min(1440px, 100%);
  --gutter: clamp(16px, 3vw, 40px);

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: "DIN Condensed", "Roboto Mono", ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --shadow-hard: 8px 8px 0 rgba(11, 14, 20, 0.85);
  --shadow-lift: 6px 6px 0 var(--blue);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* 3. 基础与中文排版 */
body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

a:hover {
  color: var(--orange);
}

strong, b {
  font-weight: 700;
}

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

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

/* 4. 跳转链接 */
.skip-link {
  position: absolute;
  top: -120px;
  left: 16px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--lime);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--orange);
}

.skip-link:focus {
  top: 12px;
  color: var(--ink);
}

/* 5. 布局工具 */
.container {
  width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(28px, 5vw, 64px);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(18px, 3vw, 30px);
  border-bottom: 2px solid var(--line);
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.rule {
  height: 0;
  border: 0;
  border-top: 1px dashed var(--line);
  margin-block: clamp(20px, 3vw, 34px);
}

/* 6. 排版组件 */
.display {
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 6rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--silver);
}

.index-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
}

.index-label::before {
  content: "";
  width: 16px;
  height: 2px;
  background: var(--orange);
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.stat {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 900;
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
}

/* 7. 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  color: var(--paper);
  background: transparent;
  border: 2px solid var(--paper);
  cursor: pointer;
  transition: transform 180ms var(--ease), background-color 180ms var(--ease), color 180ms var(--ease), box-shadow 180ms var(--ease), border-color 180ms var(--ease);
}

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

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--blue);
}

.btn--primary:hover {
  color: var(--ink);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--blue);
}

.btn--primary:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--blue);
}

/* 8. 标签与卡片 */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--silver);
  border: 1px solid var(--line);
  background: rgba(20, 26, 38, 0.8);
}

.chip--live {
  color: var(--lime);
  border-color: var(--lime);
}

.chip--hot {
  color: var(--orange);
  border-color: var(--orange);
}

.panel {
  position: relative;
  padding: clamp(16px, 2.2vw, 26px);
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
}

/* 9. 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: clamp(14px, 2vw, 24px);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--silver);
}

.breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

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

.breadcrumb__sep {
  color: var(--line);
}

.breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* 10. 图片容器基础 */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: 10px 10px 0 rgba(11, 14, 20, 0.85);
}

.media-frame img,
.media-frame svg,
.media-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--std { aspect-ratio: 16 / 10; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--placeholder {
  background-image: repeating-linear-gradient(135deg, var(--panel) 0 12px, rgba(38, 48, 63, 0.9) 12px 14px);
}

.media-frame--halftone::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(11, 14, 20, 0.55) 1px, transparent 1.1px);
  background-size: 5px 5px;
  opacity: 0.5;
  pointer-events: none;
}

.media-frame--speed::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image: repeating-linear-gradient(-38deg, transparent 0 14px, rgba(242, 245, 249, 0.1) 14px 15px);
  pointer-events: none;
}

/* 11. 入场显现 */
[data-reveal] {
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

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

/* 12. 头部命令栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--ink);
  border-bottom: 2px solid var(--line);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent 0 38px, rgba(167, 178, 195, 0.07) 38px 39px);
}

.header-bar {
  position: relative;
  width: var(--shell);
  margin-inline: auto;
  padding: 10px var(--gutter);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "brand nav actions";
  align-items: center;
  gap: clamp(10px, 1.8vw, 28px);
  transition: padding 180ms var(--ease);
}

.brand {
  grid-area: brand;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: var(--paper);
  line-height: 1.2;
}

.brand:hover {
  color: var(--paper);
}

.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  background: var(--orange);
  color: var(--ink);
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 0;
  transform: skewX(-10deg);
  box-shadow: 3px 3px 0 var(--blue);
}

.brand__name {
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.brand__sub {
  padding-left: 8px;
  border-left: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--silver);
  white-space: nowrap;
}

.site-nav {
  grid-area: nav;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  flex: 0 0 auto;
}

.nav-link {
  display: block;
  padding: 7px 9px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

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

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

.header-actions {
  grid-area: actions;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
  white-space: nowrap;
}

.header-status .num {
  color: var(--paper);
  font-size: 13px;
}

.status-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.18);
  animation: status-pulse 2.4s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.18); }
  50% { box-shadow: 0 0 0 6px rgba(57, 255, 20, 0.06); }
}

.header-cta {
  white-space: nowrap;
}

.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: transparent;
  border: 2px solid var(--line);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: 0.16em;
  cursor: pointer;
}

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  background: var(--paper);
  transition: transform 180ms var(--ease), opacity 180ms var(--ease), background-color 180ms var(--ease);
}

.nav-toggle__label {
  line-height: 1;
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--orange);
  color: var(--orange);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar {
  background: var(--orange);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.header-progress {
  height: 3px;
  background: var(--panel);
  overflow: hidden;
}

.header-progress__fill {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--blue) 0%, var(--orange) 60%, var(--lime) 100%);
}

/* 头部压缩态 */
.site-header[data-compact] .header-bar {
  padding-block: 4px;
}

.site-header[data-compact] .brand__sub {
  display: none;
}

.site-header[data-compact] .header-progress {
  height: 2px;
}

.site-header[data-compact] .nav-link {
  padding-block: 5px;
  font-size: 12px;
}

.site-header[data-compact="current"] .nav-link:not([aria-current="page"]) {
  display: none;
}

/* 13. 页脚 */
.site-footer {
  position: relative;
  background: var(--panel);
  border-top: 2px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--orange) 0 28px, var(--ink) 28px 56px, var(--blue) 56px 84px, var(--ink) 84px 112px);
}

.footer-inner {
  width: var(--shell);
  margin-inline: auto;
  padding: clamp(36px, 5vw, 64px) var(--gutter) 22px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.25fr 0.9fr;
  gap: clamp(20px, 3vw, 44px);
}

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

.brand--footer {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 14px;
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

.footer-title::before {
  content: "";
  width: 14px;
  height: 2px;
  background: var(--orange);
}

.footer-text {
  max-width: 36ch;
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--silver);
}

.footer-text--dim {
  font-size: 12px;
  color: rgba(167, 178, 195, 0.78);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 16px;
}

.footer-links a {
  display: inline-block;
  font-size: 13px;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.footer-links a:hover {
  color: var(--paper);
  border-color: var(--orange);
}

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

.contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 8px;
}

.contact-label {
  flex: 0 0 auto;
  min-width: 4.5em;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver);
}

.contact-value {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
}

.copy-btn {
  padding: 1px 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--silver);
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

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

.copy-btn[data-copied] {
  border-color: var(--lime);
  color: var(--lime);
}

.contact-note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--silver);
  border-left: 2px solid var(--line);
  padding-left: 10px;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: clamp(24px, 4vw, 44px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.footer-slogan {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.footer-copy {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.to-top {
  padding: 6px 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
  background: transparent;
  border: 2px solid var(--line);
  color: var(--silver);
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background-color 180ms var(--ease);
}

.to-top:hover {
  border-color: var(--blue);
  color: var(--paper);
  background: rgba(30, 144, 255, 0.12);
}

/* 14. 响应式 */
@media (max-width: 1199px) {
  .header-status__text {
    display: none;
  }

  .header-status {
    padding-right: 2px;
  }
}

@media (max-width: 1023px) {
  .header-bar {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "actions actions";
    row-gap: 10px;
    padding-block: 10px;
  }

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

  .header-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 8px;
  }

  .header-status {
    width: 100%;
  }

  .header-status__text {
    display: inline;
  }

  .header-cta {
    flex: 1 1 132px;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 70;
    padding: 6px var(--gutter) 14px;
    background: var(--ink);
    border-bottom: 2px solid var(--line);
    border-top: 1px solid var(--line);
    box-shadow: 0 22px 40px rgba(0, 0, 0, 0.65);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    padding: 12px 2px;
    font-size: 15px;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
  }

  .nav-link[aria-current="page"] {
    padding-left: 10px;
    border-left-color: var(--paper);
    border-bottom-color: var(--line);
  }

  .site-header[data-compact="current"] .nav-link:not([aria-current="page"]) {
    display: block;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .footer-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand__sub {
    display: none;
  }

  .footer-base {
    align-items: flex-start;
  }
}

@media (max-width: 420px) {
  .header-cta {
    flex: 1 1 100%;
  }

  .footer-links {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* 15. 动效降级 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .status-dot {
    animation: none;
  }

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