/* ==================================================================
   利来体育综合中国站 · 全站共享样式 /assets/site.css
   创意：高原数据看板 —— 模块化信息板 + 杂志刊头 + 档案资料卡
   ================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: rgba(27, 94, 128, 0.12);
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

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

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

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

:root {
  --color-primary: #1B5E80;
  --color-primary-dark: #0F3D54;
  --color-accent-orange: #FF6B35;
  --color-accent-gold: #F2A900;
  --color-bg: #F5F7FA;
  --color-surface: #FFFFFF;
  --color-border: #DCE3EB;
  --color-text: #1A2B3C;
  --color-muted: #5A6B7B;
  --gradient-primary: linear-gradient(135deg, #1B5E80 0%, #0F3D54 100%);

  --font-headline: 'Noto Sans SC', sans-serif;
  --font-body: 'Source Sans Pro', 'Noto Sans SC', sans-serif;
  --font-mono: 'Roboto Mono', monospace;

  --space-xs: 0.375rem;
  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  --container: 1240px;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 10px rgba(15, 61, 84, 0.07);
  --shadow-md: 0 12px 30px rgba(15, 61, 84, 0.14);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Base / 中文排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    linear-gradient(35deg, rgba(27, 94, 128, 0.05) 0%, transparent 42%),
    linear-gradient(145deg, rgba(242, 169, 0, 0.04) 68%, transparent 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  color: var(--color-text);
  line-height: 1.25;
}

h1 {
  font-size: clamp(2.125rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.015em;
}

h2 {
  font-size: clamp(1.625rem, 3.2vw, 2.25rem);
  font-weight: 800;
}

h3 {
  font-size: 1.3125rem;
  font-weight: 700;
}

h4 {
  font-size: 1.0625rem;
  font-weight: 700;
}

p {
  max-width: 68ch;
}

a {
  color: var(--color-primary);
  text-underline-offset: 0.2em;
  transition: color 0.2s ease;
}

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

:focus-visible {
  outline: 3px solid var(--color-accent-orange);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background: rgba(255, 107, 53, 0.25);
}

/* ---------- 3. Layout / 通用容器 ---------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.page-wrap {
  padding-block: var(--space-lg);
}

.section {
  padding-block: var(--space-lg);
}

.section--tint {
  background: linear-gradient(180deg, rgba(27, 94, 128, 0.06), rgba(27, 94, 128, 0.02));
  border-block: 1px solid var(--color-border);
}

.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-muted); }
.text-center { text-align: center; }

/* ---------- 4. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translate(-50%, -140%);
  z-index: 1000;
  padding: 0.625rem 1.25rem;
  background: var(--color-primary-dark);
  color: #fff;
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  box-shadow: var(--shadow-md);
  transition: transform 0.25s var(--ease);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.375rem;
  border-radius: 999px;
  border: 2px solid transparent;
  font-family: var(--font-headline);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s ease, border-color 0.2s ease;
}

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

.btn--accent {
  background: var(--color-accent-orange);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.32);
}

.btn--accent:hover {
  background: #e85a2a;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(27, 94, 128, 0.28);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(27, 94, 128, 0.34);
}

.btn--outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(27, 94, 128, 0.08);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ---------- 6. Header / 杂志刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(15, 61, 84, 0.06);
}

.site-header__inner {
  position: relative;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1.25rem 3.5rem 1rem;
}

.masthead__rule {
  flex: 1 1 0;
  max-width: 220px;
  height: 2px;
  opacity: 0.32;
  background: linear-gradient(90deg, transparent, var(--color-primary));
}

.masthead__rule--right {
  background: linear-gradient(90deg, var(--color-primary), transparent);
}

.masthead__center {
  flex: 0 0 auto;
  text-align: center;
  line-height: 1.2;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.375rem;
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--font-headline);
}

.brand__mark {
  font-size: clamp(1.875rem, 4.5vw, 2.625rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-primary-dark);
  line-height: 1.1;
}

.brand__edition {
  font-size: clamp(0.9375rem, 1.8vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-primary);
  padding-left: 0.75rem;
  margin-left: 0.375rem;
  border-left: 3px solid var(--color-accent-orange);
  line-height: 1.4;
}

.masthead__slug {
  display: block;
  margin-top: 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--color-muted);
  text-transform: uppercase;
}

/* ---------- 7. 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__bar {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-primary);
  transition: transform 0.25s var(--ease), opacity 0.2s ease;
}

.nav-toggle__label {
  font-size: 0.8125rem;
  font-weight: 700;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) 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(-6px) rotate(-45deg);
}

/* ---------- 8. Site Nav ---------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0 0.75rem;
  border-top: 1px solid var(--color-border);
}

.site-nav__links {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.125rem;
}

.site-nav__links a {
  display: inline-block;
  padding: 0.5rem 0.9375rem;
  border-radius: 999px;
  font-family: var(--font-headline);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.4;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav__links a:hover {
  color: var(--color-primary);
  background: rgba(27, 94, 128, 0.08);
}

.site-nav__links a[aria-current="page"] {
  color: #fff;
  background: var(--color-primary);
}

.site-nav__cta {
  flex: 0 0 auto;
  padding-block: 0.5rem;
  font-size: 0.8125rem;
}

/* ---------- 9. 阅读进度条 ---------- */
.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent-orange) 0 55%, var(--color-accent-gold) 55% 100%);
  z-index: 2;
}

/* ---------- 10. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.breadcrumb__item {
  color: var(--color-muted);
  text-decoration: none;
}

.breadcrumb__item:hover {
  color: var(--color-primary);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
}

.breadcrumb__sep {
  font-family: var(--font-mono);
  opacity: 0.5;
}

/* ---------- 11. 编号章节 ---------- */
.chapter {
  max-width: 760px;
  margin-bottom: var(--space-md);
}

.chapter__num {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-accent-orange);
  text-transform: uppercase;
}

.chapter__num::after {
  content: "";
  width: 2.25rem;
  height: 2px;
  background: currentColor;
}

.chapter__title {
  margin-top: 0.375rem;
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* ---------- 12. Bento 拼贴栅格 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.bento__cell {
  grid-column: span 4;
}

.bento__cell--wide {
  grid-column: span 8;
}

.bento__cell--full {
  grid-column: span 12;
}

/* ---------- 13. 资料卡 / 信息板 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(27, 94, 128, 0.4);
  box-shadow: var(--shadow-md);
}

.card--data {
  border-top: 4px solid var(--color-primary);
}

.card--data::after {
  content: "";
  position: absolute;
  top: -4px;
  right: 1rem;
  width: 3.25rem;
  height: 4px;
  background: var(--color-accent-gold);
  border-radius: 0 0 4px 4px;
}

.card--archive {
  border-left: 4px solid var(--color-accent-orange);
}

.card--archive::before {
  content: "档";
  position: absolute;
  top: 0.875rem;
  right: 0.875rem;
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 4px;
  background: rgba(255, 107, 53, 0.12);
  color: var(--color-accent-orange);
  font-family: var(--font-headline);
  font-size: 0.75rem;
  font-weight: 800;
}

.card__kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.card__title {
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.35;
}

.card__stat {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
}

.metric {
  display: grid;
  gap: 0.1875rem;
  padding: 1rem 1.125rem;
  background: rgba(255, 255, 255, 0.65);
  border-left: 3px solid var(--color-accent-gold);
  border-radius: var(--radius-sm);
}

.metric__value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.metric__label {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* ---------- 14. 标签 ---------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.125rem 0 0;
  padding: 0;
  list-style: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.6875rem;
  border-radius: 999px;
  background: rgba(27, 94, 128, 0.09);
  color: var(--color-primary);
  font-family: var(--font-headline);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

.tag--gold {
  background: rgba(242, 169, 0, 0.16);
  color: #8a5d00;
}

.tag--orange {
  background: rgba(255, 107, 53, 0.14);
  color: #c84e20;
}

/* ---------- 15. 装饰分隔线 ---------- */
.divider {
  height: 8px;
  border: 0;
  margin: var(--space-md) auto;
  border-radius: 4px;
  background: repeating-linear-gradient(90deg,
    var(--color-accent-orange) 0 32px,
    var(--color-accent-gold) 32px 48px,
    transparent 48px 80px,
    var(--color-primary) 80px 116px,
    transparent 116px 160px);
  opacity: 0.55;
  max-width: 960px;
}

/* ---------- 16. 图片容器（页面阶段放图） ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.65) 0%, rgba(255, 255, 255, 0) 30%),
    linear-gradient(135deg, rgba(27, 94, 128, 0.14) 0%, rgba(15, 61, 84, 0.28) 100%);
}

.media--wide {
  aspect-ratio: 21 / 9;
}

.media--portrait {
  aspect-ratio: 4 / 5;
}

.media img,
.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* ---------- 17. 滚动显现 ---------- */
[data-reveal] {
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

/* ---------- 18. Footer / 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: var(--space-xl);
  padding: var(--space-xl) 0 var(--space-md);
  background: var(--color-primary-dark);
  background-image: var(--gradient-primary);
  color: rgba(255, 255, 255, 0.78);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg,
    var(--color-accent-orange) 0 30%,
    var(--color-accent-gold) 30% 55%,
    rgba(255, 255, 255, 0.18) 55% 100%);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -100px;
  bottom: -120px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.footer__columns {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.25fr;
  gap: var(--space-xl);
}

.footer__col {
  display: grid;
  align-content: start;
  gap: 0.875rem;
}

.footer__brand {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.04em;
}

.footer__brand span {
  color: var(--color-accent-gold);
  font-weight: 700;
}

.footer__trust {
  margin-top: var(--space-sm);
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9375rem;
  line-height: 1.85;
  max-width: 34ch;
}

.footer__head {
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-bottom: var(--space-sm);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer__list {
  display: grid;
  gap: 0.625rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.footer__list a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s ease, padding-left 0.2s var(--ease);
}

.footer__list a:hover {
  color: #fff;
  padding-left: 0.3125rem;
}

.footer__contact-item {
  display: grid;
  gap: 0.125rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9375rem;
}

.footer__contact-type {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
}

.footer__bottom {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__copyright,
.footer__icp {
  margin: 0;
}

/* ---------- 19. Responsive / 响应式 ---------- */
@media (max-width: 860px) {
  .container {
    padding-inline: 1.125rem;
  }

  .masthead {
    padding: 0.875rem 0;
    gap: 0.75rem;
  }

  .masthead__rule {
    display: none;
  }

  .masthead__center {
    flex: 1;
    text-align: center;
  }

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

  .site-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-top: 0;
    padding: 0.25rem 0 0.875rem;
  }

  .site-nav[data-open="true"],
  .site-nav.is-open {
    display: flex;
    animation: navFade 0.25s var(--ease);
  }

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

  .site-nav__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0.125rem;
  }

  .site-nav__links a {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    background: rgba(27, 94, 128, 0.04);
  }

  .site-nav__links a:hover {
    background: rgba(27, 94, 128, 0.1);
  }

  .site-nav__links a[aria-current="page"] {
    background: var(--color-primary);
  }

  .site-nav__cta {
    margin-top: 0.75rem;
    justify-content: center;
  }

  .bento__cell,
  .bento__cell--wide,
  .bento__cell--full {
    grid-column: span 12;
  }

  .footer__columns {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (min-width: 861px) and (max-width: 1080px) {
  .bento__cell {
    grid-column: span 6;
  }

  .bento__cell--wide {
    grid-column: span 12;
  }
}

@media (max-width: 380px) {
  .masthead {
    gap: 0.375rem;
  }

  .brand__mark {
    font-size: 1.625rem;
  }

  .brand__edition {
    font-size: 0.875rem;
    padding-left: 0.5rem;
  }

  .masthead__slug {
    font-size: 0.5625rem;
    letter-spacing: 0.14em;
  }

  .site-nav__cta {
    width: 100%;
  }
}

/* ---------- 20. Motion Access / 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;
  }

  [data-reveal] {
    transition: none;
  }

  .btn:hover,
  .card:hover {
    transform: none;
  }
}