/* =============================================
   天博体育2025 / 全站共享 Site Kit
   ============================================= */
:root {
  --bg: #0B1220;
  --bg-deep: #08101C;
  --panel: #1B2A44;
  --glass: rgba(255, 255, 255, 0.08);
  --white: #F5F7FA;
  --muted: #8A94A6;
  --green: #B8FF2E;
  --orange: #FF6A00;
  --cyan: #00E5A0;
  --red: #FF3B30;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-data: "JetBrains Mono", "SF Mono", ui-monospace, Consolas, monospace;
  --container: 76rem;
  --radius: 0.75rem;
  --h1: clamp(2.8rem, 8vw, 6rem);
  --h2: clamp(2rem, 5vw, 3.5rem);
  --h3: 1.5rem;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 82% -10%, rgba(184, 255, 46, 0.08), transparent 32rem),
    radial-gradient(circle at -8% 110%, rgba(255, 106, 0, 0.07), transparent 30rem);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  color: var(--white);
  margin: 0 0 0.5em;
}

h1 { font-size: var(--h1); }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

a {
  color: var(--white);
  text-decoration: none;
}

button {
  font: inherit;
}

::selection {
  background: var(--green);
  color: var(--bg-deep);
}

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

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

#main-content {
  scroll-margin-top: 2rem;
  outline: none;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -100%;
  z-index: 200;
  background: var(--green);
  color: var(--bg-deep);
  padding: 0.75rem 1.25rem;
  border-radius: 0.25rem;
  font-weight: 700;
  box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.4);
}

.skip-link:focus-visible {
  top: 1rem;
}

/* =============================================
   头部双层导航
   ============================================= */
.site-header {
  position: relative;
  z-index: 50;
  background: linear-gradient(180deg, #0D1626 0%, var(--bg) 100%);
}

.site-header[data-nav-open]::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(3, 8, 16, 0.66);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.header-top {
  background: rgba(27, 42, 68, 0.72);
  border-bottom: 1px solid rgba(184, 255, 46, 0.22);
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.5rem;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-dot {
  flex: none;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0.25rem rgba(184, 255, 46, 0.15);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0.15rem rgba(184, 255, 46, 0.1); }
  50% { box-shadow: 0 0 0 0.4rem rgba(184, 255, 46, 0.02); }
}

.header-quick {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--orange);
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.header-quick::before {
  content: "+";
  color: var(--green);
  font-weight: 900;
}

.header-quick:hover {
  color: var(--green);
}

.header-main {
  position: relative;
  overflow: hidden;
}

.header-main::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  z-index: 2;
  background: linear-gradient(90deg, var(--green) 0 62%, var(--orange) 62% 100%);
}

.header-main-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-block: 1.1rem 0.9rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}

.brand-mark {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  background: var(--green);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: -0.04em;
  clip-path: polygon(0 0, 76% 0, 100% 24%, 100% 100%, 24% 100%, 0 76%);
  box-shadow: 0.25rem 0.25rem 0 rgba(255, 106, 0, 0.35);
  transition: transform 0.2s ease-out;
}

.header-brand:hover .brand-mark {
  transform: rotate(-6deg) scale(1.04);
}

.brand-text {
  display: grid;
  gap: 0.15rem;
  min-width: 0;
}

.brand-name {
  font-size: clamp(1.4rem, 3.4vw, 2.2rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--white);
}

.brand-slogan {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 38vw;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.1rem;
  border: 0;
  border-radius: 0.25rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.12s ease-out, box-shadow 0.12s ease-out, background 0.12s ease-out;
}

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

.btn-quick {
  margin-left: auto;
  background: var(--green);
  color: var(--bg-deep);
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  box-shadow: 0 0.35rem 1.5rem rgba(184, 255, 46, 0.12);
}

.btn-quick::after {
  content: "→";
  font-family: var(--font-data);
}

.btn-quick:hover {
  box-shadow: 0 0.35rem 2rem rgba(184, 255, 46, 0.28);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid rgba(184, 255, 46, 0.6);
  color: var(--green);
  background: rgba(184, 255, 46, 0.05);
}

.btn-outline:hover {
  background: rgba(184, 255, 46, 0.14);
}

/* 移动导航开关 */
.nav-toggle {
  display: none;
}

.nav-toggle-box {
  display: grid;
  gap: 0.3rem;
  width: 1.3rem;
}

.nav-toggle-box span {
  display: block;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.site-header[data-nav-open] .nav-toggle {
  border-color: var(--orange);
  background: rgba(255, 106, 0, 0.15);
}

.site-header[data-nav-open] .nav-toggle-box span:nth-child(1) {
  transform: translateY(0.425rem) rotate(45deg);
}

.site-header[data-nav-open] .nav-toggle-box span:nth-child(2) {
  opacity: 0;
}

.site-header[data-nav-open] .nav-toggle-box span:nth-child(3) {
  transform: translateY(-0.425rem) rotate(-45deg);
}

/* 主导航 */
.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 100;
  height: 100vh;
  height: 100dvh;
  width: min(86vw, 24rem);
  background: rgba(8, 16, 28, 0.96);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-left: 1px solid rgba(184, 255, 46, 0.35);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translate3d(103%, 0, 0);
  transition: transform 0.28s var(--ease);
}

.site-nav[data-open] {
  transform: translate3d(0, 0, 0);
  box-shadow: -1.25rem 0 3rem rgba(0, 0, 0, 0.55);
}

.site-nav-inner {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
}

.site-nav-head {
  display: grid;
  gap: 0.35rem;
}

.site-nav-label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--green);
}

.site-nav-label::before {
  content: "";
  width: 1.5rem;
  height: 2px;
  background: var(--orange);
  flex: none;
}

.site-nav-hint {
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.nav-list {
  list-style: none;
  display: grid;
}

.nav-list li {
  list-style: none;
}

.nav-list a {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0.1rem;
  border-bottom: 1px solid rgba(245, 247, 250, 0.09);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
}

.nav-list a::after {
  content: "→";
  color: var(--green);
  font-family: var(--font-data);
  font-size: 0.8rem;
}

.nav-list a:hover {
  color: var(--green);
}

.nav-list a[aria-current="page"] {
  color: var(--green);
  border-bottom-color: var(--orange);
}

.site-nav-quick {
  display: flex;
  margin-top: auto;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 1px solid rgba(255, 106, 0, 0.7);
  color: var(--orange);
  font-family: var(--font-data);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 0.6rem 0.8rem;
}

.site-nav-quick:hover {
  background: rgba(255, 106, 0, 0.1);
}

/* 移动端断点 */
@media (max-width: 63.999rem) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: rgba(184, 255, 46, 0.12);
    border: 1px solid rgba(245, 247, 250, 0.2);
    border-radius: 0.375rem;
    cursor: pointer;
  }
}

@media (max-width: 42rem) {
  .btn-quick {
    display: none;
  }

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

/* 桌面导航 */
@media (min-width: 64rem) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    transform: none;
    background: transparent;
    border: 0;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .site-nav[data-open] {
    box-shadow: none;
  }

  .site-nav-inner {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    min-height: auto;
    padding-block: 0.2rem 0.6rem;
    border-top: 1px solid rgba(245, 247, 250, 0.08);
  }

  .site-nav-head {
    display: grid;
    gap: 0.15rem;
    padding-right: 1rem;
    border-right: 1px solid rgba(245, 247, 250, 0.12);
  }

  .site-nav-label::before {
    display: none;
  }

  .site-nav-hint {
    font-size: 0.68rem;
  }

  .nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.15rem 1.75rem;
    margin-left: auto;
  }

  .nav-list a {
    border: 0;
    padding: 0.45rem 0.05rem;
    font-size: 0.9rem;
    justify-content: flex-start;
  }

  .nav-list a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--green);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.18s ease-out;
  }

  .nav-list a:hover::after {
    transform: scaleX(1);
  }

  .nav-list a[aria-current="page"] {
    border-bottom: 0;
  }

  .nav-list a[aria-current="page"]::after {
    transform: scaleX(1);
    background: var(--orange);
  }

  .site-nav-quick {
    display: none;
  }
}

/* =============================================
   页脚
   ============================================= */
.site-footer {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  border-top: 1px solid rgba(184, 255, 46, 0.4);
}

.site-footer::before {
  content: "2025";
  position: absolute;
  z-index: 0;
  right: -0.04em;
  bottom: -0.18em;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: clamp(8rem, 22vw, 18rem);
  line-height: 0.75;
  color: rgba(184, 255, 46, 0.045);
  letter-spacing: -0.06em;
  pointer-events: none;
  user-select: none;
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  padding-block: clamp(2.75rem, 6vw, 4.5rem) 2.5rem;
}

.footer-brand {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.footer-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.03em;
  color: var(--white);
  line-height: 1.2;
}

.footer-about {
  max-width: 24rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-nav {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.footer-nav ul {
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.footer-nav a {
  color: var(--muted);
  font-size: 0.88rem;
  transition: color 0.18s ease-out;
}

.footer-nav a:hover {
  color: var(--green);
}

.footer-heading {
  margin-bottom: 0.25rem;
  font-size: 1rem;
  color: var(--white);
  letter-spacing: 0.04em;
}

.footer-contact {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.footer-contact-line {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.footer-note {
  margin-top: 0.5rem;
  border-left: 2px solid var(--orange);
  padding-left: 0.75rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  background: rgba(0, 0, 0, 0.3);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1rem;
  border-top: 1px solid rgba(245, 247, 250, 0.08);
}

.footer-bottom p,
.footer-bottom a,
.footer-bottom button {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.footer-bottom a:hover {
  color: var(--green);
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 0.78rem;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
}

.to-top:hover {
  color: var(--green);
}

.to-top::before {
  content: "↑";
  font-family: var(--font-data);
}

@media (max-width: 63.999rem) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 42rem) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }
}

/* =============================================
   通用正文与基础组件
   ============================================= */
.section {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.section-head {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.section-kicker {
  display: block;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.section-title {
  margin-bottom: 0.25rem;
}

.section-lead {
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.content {
  max-width: 46rem;
}

.content-intro {
  color: var(--muted);
  font-size: 1.125rem;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 1rem;
}

.glass-card {
  background: var(--glass);
  border: 1px solid rgba(245, 247, 250, 0.1);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.accent-line {
  width: 3.5rem;
  height: 2px;
  border: 0;
  margin: 0 0 1.25rem;
  background: linear-gradient(90deg, var(--green), var(--orange));
}

.mono {
  font-family: var(--font-data);
}

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(184, 255, 46, 0.12);
  border: 1px solid rgba(184, 255, 46, 0.24);
  color: var(--green);
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
}

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

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

.index-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.index-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
}

.index-label {
  color: var(--white);
  font-weight: 700;
}

.index-value {
  font-family: var(--font-data);
  font-size: 0.85rem;
  color: var(--green);
}

.timeline {
  list-style: none;
  padding: 0;
  display: grid;
}

.timeline-item {
  position: relative;
  padding: 0 0 1.75rem 1.75rem;
  border-left: 1px solid rgba(184, 255, 46, 0.3);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -0.4rem;
  top: 0.22rem;
  width: 0.8rem;
  height: 0.8rem;
  background: var(--orange);
  transform: rotate(45deg);
  box-shadow: 0 0 0 0.2rem rgba(255, 106, 0, 0.15);
}

.timeline-marker {
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--green);
}

.timeline-title {
  display: block;
  margin: 0.35rem 0 0.4rem;
  font-weight: 700;
  color: var(--white);
}

.timeline-text {
  color: var(--muted);
  font-size: 0.85rem;
}

.panel-details {
  border-radius: var(--radius);
  background: rgba(27, 42, 68, 0.5);
  border: 1px solid rgba(245, 247, 250, 0.1);
  overflow: hidden;
}

.panel-details summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--white);
}

.panel-details summary::-webkit-details-marker {
  display: none;
}

.panel-details summary:hover {
  background: rgba(184, 255, 46, 0.06);
}

.panel-details summary::after {
  content: "+";
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 1.1rem;
  color: var(--green);
}

.panel-details[open] summary::after {
  content: "–";
}

.panel-body {
  padding: 0 1.25rem 1.1rem;
  color: var(--muted);
}

/* 响应式图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--panel), var(--bg-deep));
  border: 1px solid rgba(245, 247, 250, 0.1);
}

.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.32));
  box-shadow: inset 0 0 2rem rgba(0, 0, 0, 0.22);
  pointer-events: none;
}

/* 滚动显现 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}

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

/* 动效偏好 */
@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;
  }

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