/* ============================================================
   爱游戏·中国官网 — 共享样式 /assets/site.css
   夜间赛场 · Bento板 · 切角斜线语言
   ============================================================ */

/* ---------- 01 设计变量 ---------- */
:root {
  --color-bg: #0A0E27;
  --color-bg-card: #151B3A;
  --color-accent: #39FF14;
  --color-accent-fire: #FF4D00;
  --color-gold: #FFD700;
  --color-text: #FFFFFF;
  --color-text-dim: #A0A8C8;
  --color-border: #2A3358;
  --color-warning-bg: #3A1D2E;
  --color-light-bg: #F2F2F2;

  --font-heading: Impact, 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: Roboto, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', 'Helvetica Neue', sans-serif;
  --font-data: 'DIN Alternate', 'Roboto Mono', 'SFMono-Regular', Consolas, monospace;

  --container-w: 1200px;
  --header-h: 72px;
  --radius: 6px;
  --radius-lg: 12px;

  --clip-notch: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --fast: 160ms;
  --med: 260ms;
}

/* ---------- 02 Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(1000px 500px at 90% -10%, rgba(57, 255, 20, 0.05), transparent 60%),
    radial-gradient(700px 400px at -5% 25%, rgba(255, 77, 0, 0.04), transparent 55%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-x: clip;
}

#main-content {
  flex: 1 0 auto;
  width: 100%;
}

ul,
ol {
  list-style: none;
}

img,
video,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

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

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

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

/* ---------- 03 中文排版 ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-bottom: 0.75em;
}

h1 { font-size: clamp(36px, 5.5vw, 64px); }
h2 { font-size: clamp(28px, 3.6vw, 44px); }
h3 { font-size: clamp(22px, 2.4vw, 30px); }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }

p {
  margin-bottom: 16px;
}

strong {
  font-weight: 700;
  color: var(--color-text);
}

small {
  font-size: 0.875em;
  color: var(--color-text-dim);
}

/* ---------- 04 布局容器 ---------- */
.content-container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 56px 0;
}

.section-compact {
  padding: 32px 0;
}

/* ---------- 05 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
  background: rgba(10, 14, 39, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 2;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent) 35%, var(--color-gold) 70%, var(--color-accent-fire) 100%);
  opacity: 0.35;
}

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

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 12px 24px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 4px;
  box-shadow: 0 6px 24px rgba(57, 255, 20, 0.4);
  transform: translateY(calc(-100% - 20px));
  transition: transform var(--med) var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: none;
  color: var(--color-bg);
}

/* 滚动进度条 */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 3;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-gold) 55%, var(--color-accent-fire) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 80ms linear;
}

/* 品牌组合 */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  clip-path: var(--clip-notch);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.25);
}

.brand-lockup:focus-visible .brand-mark {
  filter: drop-shadow(0 0 6px var(--color-accent));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--color-text);
  white-space: nowrap;
}

.brand-text small {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--color-text-dim);
  text-transform: uppercase;
}

/* 命令栏导航 */
.command-nav {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  justify-content: center;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-dim);
  border: 1px solid transparent;
  border-radius: 4px;
  position: relative;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.nav-index {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.6;
  letter-spacing: 0.05em;
  transition: opacity var(--fast) var(--ease);
}

.nav-label {
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  background: rgba(57, 255, 20, 0.07);
  border-color: rgba(57, 255, 20, 0.3);
}

.nav-link:hover .nav-index,
.nav-link:focus-visible .nav-index {
  opacity: 1;
}

.nav-link[aria-current="page"] {
  color: var(--color-text);
  background: rgba(57, 255, 20, 0.1);
  border-color: var(--color-accent);
}

.nav-link[aria-current="page"] .nav-index {
  opacity: 1;
}

.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 1px;
  height: 2px;
  background: var(--color-accent);
  transform: skewX(-20deg);
}

/* 头部快捷入口 */
.nav-cta {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 9px 18px 9px 14px;
  background: var(--color-accent-fire);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%, 6px 50%);
  transition: background var(--fast) var(--ease), filter var(--fast) var(--ease);
}

.nav-cta:hover {
  background: var(--color-gold);
  color: var(--color-bg);
}

.nav-cta:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 6px var(--color-accent-fire));
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 44px;
  min-height: 40px;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-card);
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--color-accent);
  background: rgba(57, 255, 20, 0.08);
}

.nav-toggle-lines {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--med) var(--ease), opacity var(--fast) var(--ease), background var(--fast) var(--ease);
}

.nav-toggle-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-dim);
  white-space: nowrap;
}

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

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

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

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

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

/* ---------- 06 页脚 ---------- */
.site-footer {
  flex-shrink: 0;
  position: relative;
  background: var(--color-bg-card);
  border-top: 3px solid var(--color-accent-fire);
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 0;
  right: 0;
  height: 48px;
  background: repeating-linear-gradient(-45deg, transparent 0 14px, rgba(57, 255, 20, 0.04) 14px 28px);
  pointer-events: none;
}

.footer-shell {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 48px 24px 24px;
  position: relative;
}

.footer-primary {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-statement {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 340px;
  margin: 0;
}

.footer-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  display: inline-block;
}

.footer-nav-list li + li,
.footer-contact-list li + li {
  margin-top: 8px;
}

.footer-nav-list a {
  font-size: 14px;
  color: var(--color-text-dim);
  transition: color var(--fast) var(--ease), padding-left var(--fast) var(--ease);
}

.footer-nav-list a:hover,
.footer-nav-list a:focus-visible {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-contact-list li {
  font-size: 14px;
  color: var(--color-text-dim);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
}

.footer-copy,
.footer-icp {
  font-size: 13px;
  color: var(--color-text-dim);
  margin: 0;
}

/* ---------- 07 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: color var(--fast) var(--ease), background var(--fast) var(--ease), border-color var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.1);
}

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: transparent;
  color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.2);
}

.btn--fire {
  background: var(--color-accent-fire);
  border-color: var(--color-accent-fire);
  color: var(--color-text);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%, 8px 50%);
}

.btn--fire:hover,
.btn--fire:focus-visible {
  filter: brightness(1.15);
  color: var(--color-text);
}

.btn--fire:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 6px var(--color-accent-fire));
}

.btn--ghost {
  color: var(--color-text-dim);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--color-text);
  border-color: var(--color-border);
  background: rgba(255, 255, 255, 0.04);
}

/* ---------- 08 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--color-text-dim);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

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

.breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--color-border);
}

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

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--color-accent);
}

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

/* ---------- 09 内容面板 ---------- */
.panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel--emphasis {
  border-left: 3px solid var(--color-accent);
}

.panel-cut {
  position: relative;
  background: var(--color-bg-card);
  padding: 24px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

.panel-cut--glow {
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.1), var(--color-bg-card) 45%);
}

/* ---------- 10 Bento 网格 ---------- */
.grid-bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.grid-bento > * {
  grid-column: span 12;
}

.grid-bento .col-span-3 { grid-column: span 3; }
.grid-bento .col-span-4 { grid-column: span 4; }
.grid-bento .col-span-5 { grid-column: span 5; }
.grid-bento .col-span-6 { grid-column: span 6; }
.grid-bento .col-span-7 { grid-column: span 7; }
.grid-bento .col-span-8 { grid-column: span 8; }
.grid-bento .col-span-9 { grid-column: span 9; }
.grid-bento .col-span-12 { grid-column: span 12; }

/* ---------- 11 区块标题组 ---------- */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-fire);
  background: rgba(255, 77, 0, 0.08);
  border: 1px solid rgba(255, 77, 0, 0.35);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 100%, 6px 100%);
}

.section-title {
  margin-top: 12px;
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.section-desc {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 640px;
}

/* ---------- 12 数据与媒体 ---------- */
.data-stat {
  font-family: var(--font-data);
  font-size: 44px;
  line-height: 1;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.data-stat small {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.4;
  margin-top: 6px;
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
}

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

.media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 14, 39, 0.55) 0%, transparent 55%);
  pointer-events: none;
}

/* ---------- 13 长文与声明 ---------- */
.prose {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-dim);
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  color: var(--color-text);
}

.prose p {
  margin-bottom: 18px;
}

.prose a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.notice-block {
  background: var(--color-warning-bg);
  border-left: 4px solid var(--color-accent-fire);
  padding: 20px 24px;
  border-radius: 0 8px 8px 0;
  margin: 20px 0;
}

.light-block {
  background: var(--color-light-bg);
  color: #222;
  border-radius: 8px;
  padding: 24px;
  margin: 20px 0;
}

.light-block h1,
.light-block h2,
.light-block h3,
.light-block h4 {
  color: #222;
}

.light-block p {
  color: #333;
}

/* ---------- 14 响应式 ---------- */
@media (max-width: 1024px) {
  .nav-link {
    padding: 8px 9px;
    font-size: 13px;
  }
}

@media (max-width: 900px) {
  .header-shell {
    padding: 0 16px;
  }

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

  .nav-cta {
    display: none;
  }

  .command-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    justify-content: flex-start;
    background: var(--color-bg-card);
    border-bottom: 2px solid var(--color-accent);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--med) var(--ease), opacity var(--med) var(--ease), visibility var(--med) var(--ease);
  }

  .command-nav[data-open="true"] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 8px 16px;
    width: 100%;
  }

  .nav-item {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 14px 12px;
    font-size: 16px;
    border: none;
    border-radius: 0;
    border-left: 3px solid transparent;
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    border-left-color: var(--color-accent);
    background: rgba(57, 255, 20, 0.06);
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--color-accent);
    background: rgba(57, 255, 20, 0.08);
  }

  .nav-link[aria-current="page"]::after {
    display: none;
  }

  .grid-bento .col-span-3,
  .grid-bento .col-span-4,
  .grid-bento .col-span-5,
  .grid-bento .col-span-6,
  .grid-bento .col-span-7,
  .grid-bento .col-span-8,
  .grid-bento .col-span-9 {
    grid-column: span 6;
  }

  .grid-bento .col-span-12 {
    grid-column: span 12;
  }

  .footer-primary {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

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

@media (max-width: 600px) {
  .brand-text small {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .grid-bento .col-span-3,
  .grid-bento .col-span-4,
  .grid-bento .col-span-5,
  .grid-bento .col-span-6,
  .grid-bento .col-span-7,
  .grid-bento .col-span-8,
  .grid-bento .col-span-9 {
    grid-column: span 12;
  }

  .footer-primary {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-shell {
    padding: 32px 16px 20px;
  }

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

  .section {
    padding: 40px 0;
  }
}

/* ---------- 15 减少动效 ---------- */
@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-progress {
    display: none;
  }

  .skip-link {
    transition: none;
  }

  .command-nav {
    transition: none;
  }
}