/* =========================================================
   大发竞界 — 全站共享样式
   文件位置 /assets/site.css
   ========================================================= */

/* ---------- 1. 变量与重置 ---------- */
:root {
  --deep-space: #050714;
  --night-blue: #0A1024;
  --galaxy-blue: #15245A;
  --star-white: #EAF2FF;
  --muted-blue: #9DB1E3;
  --gold-halo: #F5C96B;
  --gold-deep: #B8823B;
  --lake-teal: #3FD9C7;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-line: rgba(255, 255, 255, 0.16);
  --content-max: 1280px;
  --header-h: 64px;
  --radius: 16px;
  --font-display: 'Inter', 'HarmonyOS Sans SC', 'Source Han Sans SC', sans-serif;
  --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
  --font-body: 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--star-white);
  background:
    radial-gradient(ellipse at 80% -10%, rgba(21, 36, 90, 0.65) 0%, transparent 60%),
    radial-gradient(ellipse at 10% 110%, rgba(21, 36, 90, 0.45) 0%, transparent 55%),
    radial-gradient(circle at 25% 35%, rgba(234, 242, 255, 0.06) 0%, transparent 1.5px),
    radial-gradient(circle at 72% 60%, rgba(245, 201, 107, 0.05) 0%, transparent 1.5px),
    radial-gradient(circle at 40% 85%, rgba(234, 242, 255, 0.04) 0%, transparent 1.2px),
    var(--deep-space);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

ul, ol {
  list-style: none;
}

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

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

input, select, textarea {
  font: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.25;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

/* ---------- 2. 焦点与无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--gold-halo);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 18px;
  background: var(--gold-halo);
  color: var(--deep-space);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-20px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.skip-link:focus-visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

#main-content {
  outline: none;
  min-height: 70vh;
  padding-top: var(--header-h);
}

/* ---------- 3. 顶部命令栏 Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 7, 20, 0.65);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(5, 7, 20, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
  min-height: var(--header-h);
}

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--star-white);
  transition: color 0.25s ease;
}

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

.brand-mark {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  transition: transform 0.3s var(--ease-out), filter 0.3s ease;
}

.brand:hover .brand-mark {
  transform: rotate(18deg) scale(1.05);
  filter: drop-shadow(0 0 8px rgba(245, 201, 107, 0.5));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-sub {
  font-size: 0.68rem;
  color: var(--muted-blue);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.brand:hover .brand-sub {
  color: rgba(157, 177, 227, 0.85);
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--star-white);
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--gold-halo);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link[aria-current="page"] {
  color: var(--gold-halo);
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-halo), rgba(245, 201, 107, 0.2));
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--gold-deep);
}

.nav-link:hover .nav-index,
.nav-link[aria-current="page"] .nav-index {
  color: var(--gold-halo);
}

/* 头部工具 */
.header-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 10px;
  border: 1px solid var(--glass-line);
  border-radius: 999px;
  background: var(--glass-bg);
  font-size: 0.74rem;
  color: var(--muted-blue);
  white-space: nowrap;
}

.status-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lake-teal);
}

.status-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid rgba(63, 217, 199, 0.45);
  animation: status-pulse 2.2s ease-out infinite;
}

@keyframes status-pulse {
  0%   { transform: scale(0.4); opacity: 1; }
  80%  { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(1.6); opacity: 0; }
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1px solid var(--glass-line);
  border-radius: 10px;
  background: var(--glass-bg);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--gold-halo);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--star-white);
  transition: transform 0.3s var(--ease-out), opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- 4. 阅读进度条 ---------- */
.progress-track {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1100;
  background: rgba(234, 242, 255, 0.05);
  pointer-events: none;
}

.progress-track span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold-halo), var(--lake-teal));
  will-change: width;
}

/* ---------- 5. 页脚 Footer ---------- */
.site-footer {
  margin-top: clamp(64px, 10vw, 120px);
  background:
    radial-gradient(ellipse at 20% 110%, rgba(21, 36, 90, 0.55) 0%, transparent 55%),
    radial-gradient(ellipse at 85% -20%, rgba(245, 201, 107, 0.05) 0%, transparent 45%),
    var(--night-blue);
  border-top: 1px solid var(--glass-line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.footer-brand-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--star-white);
  transition: color 0.25s ease;
}

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

.footer-brand .brand-mark {
  width: 40px;
  height: 40px;
  color: var(--gold-halo);
}

.footer-tagline {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--muted-blue);
  margin-top: 10px;
  max-width: 360px;
}

.footer-trust {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 2px solid var(--gold-deep);
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--muted-blue);
  max-width: 460px;
}

.footer-contact {
  margin-top: 20px;
  font-size: 0.82rem;
  color: var(--muted-blue);
  line-height: 1.9;
}

.footer-contact h3 {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--star-white);
  margin-bottom: 6px;
}

.footer-contact li {
  white-space: nowrap;
}

.footer-col h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-halo);
  margin-bottom: 14px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--muted-blue);
  font-size: 0.92rem;
  transition: color 0.2s ease, padding-left 0.25s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--gold-halo);
  padding-left: 5px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 18px 24px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.82rem;
  color: var(--muted-blue);
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

/* ---------- 6. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.94rem;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-halo) 0%, var(--gold-deep) 100%);
  color: var(--deep-space);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 201, 107, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--star-white);
  border-color: var(--glass-line);
}

.btn-ghost:hover {
  border-color: var(--gold-halo);
  color: var(--gold-halo);
  transform: translateY(-2px);
}

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

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  font-size: 0.84rem;
  color: var(--muted-blue);
}

.breadcrumbs a {
  color: var(--muted-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumbs a:hover {
  color: var(--gold-halo);
}

.breadcrumbs .sep {
  opacity: 0.45;
  font-family: var(--font-mono);
}

.breadcrumbs [aria-current="page"] {
  color: var(--star-white);
}

/* ---------- 8. 布局容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(48px, 8vw, 96px) 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-halo);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 3.8vw, 2.9rem);
  line-height: 1.18;
  color: var(--star-white);
}

.section-desc {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--muted-blue);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.span-3, .span-4, .span-5, .span-6, .span-7, .span-8 {
  grid-column: 1 / -1;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* ---------- 9. 玻璃卡片与通用组件 ---------- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 28px;
}

.glass-card.hoverable {
  transition: transform 0.3s var(--ease-out), border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card.hoverable:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 201, 107, 0.45);
  box-shadow: 0 18px 44px rgba(5, 7, 20, 0.6);
}

.serif-accent {
  font-family: var(--font-serif);
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--muted-blue);
}

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

/* 图片容器占位 */
.img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(21, 36, 90, 0.45), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--glass-line);
}

.img-frame::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

.img-frame[data-ratio="4-3"]::before { padding-top: 75%; }
.img-frame[data-ratio="1-1"]::before { padding-top: 100%; }
.img-frame[data-ratio="3-4"]::before { padding-top: 133.34%; }
.img-frame[data-ratio="21-9"]::before { padding-top: 42.86%; }

/* ---------- 10. 滚动显现协议 ---------- */
[data-js] [data-scroll-spy] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

[data-js] [data-scroll-spy][data-active] {
  opacity: 1;
  transform: none;
}

/* ---------- 11. 响应式断点 ---------- */
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .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; }
  .span-3 { grid-column: span 3; }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    z-index: -1;
    background: rgba(5, 7, 20, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0s linear 0.25s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .nav-list {
    display: block;
    padding: 12px 16px 20px;
  }

  .nav-list li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 8px;
  }

  .nav-list li:last-child a {
    border-bottom: none;
  }

  .nav-link[aria-current="page"]::after {
    left: auto;
    right: auto;
    top: 50%;
    left: 0;
    width: 3px;
    height: 20px;
    transform: translateY(-50%);
    background: linear-gradient(180deg, var(--gold-halo), rgba(245, 201, 107, 0.1));
    border-radius: 3px;
  }

  .nav-index {
    width: 22px;
    color: var(--gold-deep);
  }

  .status-pill {
    display: none;
  }
}

@media (max-width: 980px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .header-inner {
    padding: 0 16px;
  }

  .container {
    padding: 0 16px;
  }

  .brand-sub {
    font-size: 0.62rem;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }
}

/* ---------- 12. 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;
    scroll-behavior: auto !important;
  }

  [data-js] [data-scroll-spy] {
    opacity: 1;
    transform: none;
  }

  .status-dot::after {
    animation: none;
  }

  .site-header,
  .site-nav,
  .nav-toggle span,
  .glass-card.hoverable,
  .brand .brand-mark {
    transition: none !important;
  }
}