/* ========== 天博赛场 · 全站共享样式 /assets/site.css ========== */

/* ---------- CSS 变量 ---------- */
:root {
  --clr-primary: #0B3D2E;
  --clr-gold: #D4AF37;
  --clr-cta: #FF6B35;
  --clr-cream: #F5F5F0;
  --clr-ink: #111F1B;
  --clr-muted: #E8E4D8;
  --clr-gray: #4A6572;
  --clr-deep: #263A34;

  --font-headline: 'Oswald', 'Arial Narrow', 'Haettenschweiler', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  --container: 1200px;
  --radius-sharp: 4px;
  --radius-pill: 999px;
  --shadow-capsule: 0 14px 44px rgba(3, 9, 7, 0.34);
  --shadow-card: 0 10px 30px rgba(11, 61, 46, 0.14);
  --ease: 180ms ease;
}

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

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: 0.01em;
  color: var(--clr-deep);
  background: var(--clr-cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.15;
  color: var(--clr-ink);
}

p {
  margin: 0;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ease);
}

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

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

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

:focus-visible {
  outline: 2px solid var(--clr-cta);
  outline-offset: 3px;
  border-radius: 2px;
}

#main-content {
  outline: none;
  scroll-margin-top: 28px;
}

/* ---------- 通用工具 ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.section {
  padding-block: clamp(64px, 9vh, 112px);
}

.page-content {
  padding-top: clamp(96px, 14vh, 140px);
  padding-bottom: clamp(48px, 8vh, 96px);
}

.page-bg {
  background-color: var(--clr-cream);
  background-image:
    linear-gradient(rgba(11, 61, 46, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 61, 46, 0.035) 1px, transparent 1px);
  background-size: 32px 32px;
}

.bg-primary {
  background: var(--clr-primary);
  color: rgba(245, 245, 240, 0.78);
}

.bg-primary .section-title {
  color: var(--clr-cream);
}

.bg-primary .section-subtitle {
  color: rgba(245, 245, 240, 0.64);
}

.bg-ink {
  background: var(--clr-ink);
  color: rgba(245, 245, 240, 0.72);
}

.data-font {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
}

/* ---------- 杂志式章节标题 ---------- */
.section-head {
  margin-bottom: 44px;
}

.section-index {
  display: block;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--clr-gold);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.875rem, 4.5vw, 3.25rem);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.section-title::after {
  content: "";
  display: block;
  width: 54px;
  height: 3px;
  background: var(--clr-gold);
  margin-top: 14px;
}

.section-subtitle {
  margin-top: 16px;
  max-width: 56ch;
  color: var(--clr-gray);
  font-size: 1.0625rem;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-sharp);
  font-family: var(--font-headline);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  cursor: pointer;
  transition: background var(--ease), color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-cta {
  background: var(--clr-cta);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.28);
}

.btn-cta:hover {
  background: #E85A28;
  color: #fff;
  box-shadow: 0 12px 28px rgba(255, 107, 53, 0.35);
}

.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-cream);
  border-color: var(--clr-primary);
}

.btn-primary:hover {
  background: var(--clr-deep);
  color: var(--clr-gold);
}

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

.btn-outline:hover {
  border-color: var(--clr-gold);
  color: var(--clr-gold);
  background: rgba(11, 61, 46, 0.04);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font-size: 0.8125rem;
  color: var(--clr-gray);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--clr-gold);
  font-family: var(--font-data);
}

.breadcrumb a:hover {
  color: var(--clr-gold);
}

.breadcrumb [aria-current="page"] {
  color: var(--clr-primary);
  font-weight: 600;
}

/* ---------- 栅格 ---------- */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

@media (max-width: 900px) {
  .grid-cards,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .grid-cards,
  .grid-2,
  .grid-4 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ---------- 悬浮胶囊头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 24px;
  pointer-events: none;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 12px 20px;
  background: var(--clr-cta);
  color: #fff;
  border-radius: var(--radius-sharp);
  font-family: var(--font-headline);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transform: translateY(-140%);
  transition: transform 160ms ease;
  pointer-events: auto;
}

.skip-link:focus {
  transform: none;
  color: #fff;
}

.header-inner {
  position: relative;
  margin-left: auto;
  margin-right: 0;
  max-width: 1040px;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 8px 8px 20px;
  background: rgba(17, 31, 27, 0.9);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-capsule);
  pointer-events: auto;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.header-inner:hover {
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow: 0 18px 52px rgba(3, 9, 7, 0.4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--clr-cream);
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background:
    linear-gradient(135deg, var(--clr-gold) 0 5px, transparent 5px),
    var(--clr-primary);
  border: 1px solid var(--clr-gold);
  border-radius: var(--radius-sharp);
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--clr-gold);
  transition: background var(--ease), color var(--ease);
}

.brand:hover .brand-mark {
  background: var(--clr-gold);
  color: var(--clr-ink);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-headline);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--clr-cream);
  transition: color var(--ease);
}

.brand:hover .brand-name {
  color: var(--clr-gold);
}

.brand-en {
  font-family: var(--font-data);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--clr-gold);
}

.main-nav {
  margin-left: auto;
}

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

.nav-link {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(245, 245, 240, 0.72);
  transition: color var(--ease), background var(--ease);
}

.nav-link:hover {
  color: var(--clr-gold);
  background: rgba(11, 61, 46, 0.55);
}

.nav-link[aria-current="page"] {
  color: var(--clr-gold);
  background: rgba(11, 61, 46, 0.8);
  font-weight: 600;
}

.header-cta {
  margin-left: auto;
  flex-shrink: 0;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--clr-cta);
  color: #fff;
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: background var(--ease), transform var(--ease), box-shadow var(--ease);
}

.header-cta:hover {
  background: #E85A28;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 50%;
  background: rgba(11, 61, 46, 0.7);
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--clr-gold);
  transition: transform var(--ease), opacity var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(4) {
  transform: translateY(-3.5px) rotate(-45deg);
}

.scroll-progress {
  position: absolute;
  left: 26px;
  right: 26px;
  bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background: rgba(212, 175, 55, 0.14);
  overflow: hidden;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--clr-gold);
  border-radius: inherit;
}

@media (min-width: 821px) and (max-width: 1100px) {
  .header-inner {
    gap: 12px;
  }

  .nav-link {
    padding-inline: 10px;
    font-size: 0.8125rem;
  }
}

@media (max-width: 820px) {
  .site-header {
    padding: 12px 14px;
  }

  .header-inner {
    margin-left: 0;
    max-width: none;
    padding: 6px 6px 6px 14px;
    gap: 10px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-name {
    font-size: 0.9375rem;
    letter-spacing: 0.05em;
  }

  .brand-en {
    font-size: 0.5625rem;
    letter-spacing: 0.16em;
  }

  .header-cta {
    margin-left: auto;
    padding: 9px 16px;
    font-size: 0.75rem;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    margin-left: 0;
    background: rgba(17, 31, 27, 0.97);
    border: 1px solid rgba(212, 175, 55, 0.25);
    border-radius: 20px;
    padding: 16px;
    box-shadow: var(--shadow-capsule);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
  }

  .main-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

  .nav-link {
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 1rem;
  }

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

  .scroll-progress {
    left: 16px;
    right: 16px;
    bottom: 4px;
  }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 8vw, 120px);
  background: var(--clr-ink);
  color: rgba(245, 245, 240, 0.72);
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-gold), rgba(212, 175, 55, 0.2) 60%, var(--clr-cta));
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 48px;
  right: 40px;
  width: 180px;
  height: 180px;
  background: repeating-linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0 2px, transparent 2px 12px);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr 1fr;
  gap: 48px;
  padding-block: 56px 48px;
}

.footer-col,
.footer-col-brand,
.footer-col-links,
.footer-col-contact {
  min-width: 0;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-headline);
  font-size: 1.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-cream);
}

.footer-logo:hover {
  color: var(--clr-gold);
}

.footer-logo-mark {
  display: inline-block;
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  background: var(--clr-gold);
  transform: rotate(45deg);
}

.footer-trust {
  margin-top: 18px;
  max-width: 44ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(245, 245, 240, 0.58);
}

.footer-heading {
  margin-bottom: 18px;
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--clr-gold);
}

.footer-list li + li {
  margin-top: 10px;
}

.footer-list a {
  font-size: 0.9375rem;
  color: rgba(245, 245, 240, 0.7);
}

.footer-list a:hover {
  color: var(--clr-gold);
}

.footer-contact-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  line-height: 1.65;
  font-size: 0.875rem;
  color: rgba(245, 245, 240, 0.78);
}

.footer-contact-list li + li {
  margin-top: 10px;
}

.footer-label {
  flex: 0 0 auto;
  min-width: 32px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-gold);
}

.footer-hours {
  margin-top: 18px;
  border-left: 2px solid var(--clr-gold);
  padding-left: 12px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(245, 245, 240, 0.5);
}

.footer-bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.16);
  padding-block: 18px;
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  font-size: 0.8125rem;
  color: rgba(245, 245, 240, 0.46);
}

.footer-icp {
  font-family: var(--font-data);
  letter-spacing: 0.08em;
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .footer-col-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-block: 40px 32px;
  }

  .site-footer::after {
    width: 100px;
    height: 100px;
    top: 24px;
    right: 16px;
  }
}

/* ---------- 数据卡片 ---------- */
.data-card {
  background: var(--clr-primary);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-sharp);
  padding: 24px;
  color: rgba(245, 245, 240, 0.76);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.data-card:hover {
  transform: translateY(-3px);
  border-color: var(--clr-gold);
  box-shadow: var(--shadow-card);
}

.data-card-label {
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--clr-gold);
}

.data-card-value {
  display: block;
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 2.5rem;
  font-weight: 500;
  line-height: 1.15;
  color: var(--clr-cream);
}

.data-card-foot {
  margin-top: 8px;
  font-size: 0.875rem;
  color: rgba(245, 245, 240, 0.55);
}

.data-card[data-tone="light"] {
  background: var(--clr-muted);
  border-color: rgba(17, 31, 27, 0.08);
  color: var(--clr-deep);
}

.data-card[data-tone="light"] .data-card-label {
  color: var(--clr-primary);
}

.data-card[data-tone="light"] .data-card-value {
  color: var(--clr-primary);
}

.data-card[data-tone="light"] .data-card-foot {
  color: var(--clr-gray);
}

.data-card[data-tone="light"]:hover {
  border-color: var(--clr-gold);
  box-shadow: var(--shadow-card);
}

.data-bar {
  margin-top: 14px;
  height: 6px;
  border-radius: 0;
  overflow: hidden;
}

.data-card .data-bar {
  background: rgba(245, 245, 240, 0.16);
}

.data-card[data-tone="light"] .data-bar {
  background: rgba(17, 31, 27, 0.14);
}

.data-bar > span {
  display: block;
  width: var(--bar-w, 0%);
  height: 100%;
  background: var(--clr-gold);
}

/* ---------- 数据表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--clr-muted);
  border-radius: var(--radius-sharp);
  background: var(--clr-cream);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  color: var(--clr-deep);
}

.data-table thead th {
  padding: 14px 16px;
  background: var(--clr-primary);
  color: var(--clr-gold);
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: left;
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 16px;
  border-top: 1px solid var(--clr-muted);
  font-variant-numeric: tabular-nums;
}

.data-table tbody tr:nth-child(even) td {
  background: var(--clr-muted);
}

.data-table td:first-child {
  font-family: var(--font-data);
  font-size: 0.875rem;
}

/* ---------- 图片容器 ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sharp);
  background:
    repeating-linear-gradient(135deg, rgba(11, 61, 46, 0.06) 0 2px, transparent 2px 10px),
    linear-gradient(180deg, rgba(11, 61, 46, 0.03), rgba(11, 61, 46, 0.08)),
    var(--clr-muted);
  aspect-ratio: 16 / 10;
}

.img-frame[data-ratio="wide"] {
  aspect-ratio: 21 / 9;
}

.img-frame[data-ratio="tall"] {
  aspect-ratio: 4 / 5;
}

.img-frame[data-ratio="square"] {
  aspect-ratio: 1 / 1;
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.img-frame:hover img {
  transform: scale(1.02);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .img-frame:hover img {
    transform: none;
  }
}