/* ============================================================
   金年会电子游 · 全站共享样式 /assets/site.css
   战术板语汇：深墨蓝底 + 电光青信号 + 限量信号橙
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  color-scheme: dark;
}
body, h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #08192B;
  --ink-800: #0F2740;
  --ink-700: #16324F;
  --cyan: #2ED8C6;
  --cyan-soft: #8AF3E6;
  --signal: #FF7A2F;
  --signal-soft: #FFC08A;
  --mist: #A9BCD2;
  --paper: #F3F7FB;
  --rule: #D7E3EE;
  --on-cyan: #04222A;
  --line-hair: rgba(215, 227, 238, 0.14);
  --line-soft: rgba(215, 227, 238, 0.08);

  --radius-s: 8px;
  --radius-m: 16px;
  --radius-pill: 999px;

  --shell-max: 1200px;
  --gutter: 20px;

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-narrow: "Arial Narrow", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --shadow-panel: 0 18px 40px rgba(3, 10, 20, 0.45);
  --ease-signal: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---------- 3. 基础排版 ---------- */
body {
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.25; }
.mono { font-family: var(--font-mono); letter-spacing: 0.04em; font-weight: 500; }

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

/* ---------- 4. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: 820px; }

.section { padding-block: clamp(40px, 7vw, 88px); }
.section--tight { padding-block: clamp(22px, 4vw, 44px); }

.surface-paper {
  background-color: var(--paper);
  color: var(--ink-700);
}
.surface-paper .page-title,
.surface-paper h1,
.surface-paper h2,
.surface-paper h3 { color: var(--ink-700); }
.surface-paper .lede { color: #3C5A79; }
.surface-paper .eyebrow { color: #0E7A70; }
.surface-paper .eyebrow::before { background-color: #0E7A70; }

.rule {
  height: 1px;
  border: 0;
  background-image: repeating-linear-gradient(90deg, var(--line-hair) 0 1px, transparent 1px 12px);
}

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background-color: var(--cyan);
  color: var(--on-cyan);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: top 0.18s var(--ease-signal);
}
.skip-link:focus { top: 12px; }

/* ---------- 6. 头部浮岛 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-image: linear-gradient(180deg, rgba(8, 25, 43, 0.97) 0%, rgba(8, 25, 43, 0.87) 100%);
  border-bottom: 1px solid var(--line-hair);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: box-shadow 0.24s var(--ease-signal);
}
.site-header.is-scrolled { box-shadow: 0 16px 34px rgba(3, 10, 20, 0.5); }

.header-inner {
  position: relative;
  max-width: var(--shell-max);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px var(--gutter);
  transition: padding 0.24s var(--ease-signal);
}
.site-header.is-scrolled .header-inner { padding-block: 8px; }

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background-color: var(--line-soft);
  overflow: hidden;
}
.header-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background-image: linear-gradient(90deg, var(--cyan), var(--signal));
  transition: width 0.12s linear;
}

/* 品牌岛 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  padding: 4px 10px 4px 4px;
  border-radius: var(--radius-pill);
}
.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 11px;
  background-image: linear-gradient(145deg, #35E2CF 0%, #0B6C66 100%);
  box-shadow: inset 0 0 0 1px rgba(138, 243, 230, 0.55);
}
.brand-mark-line {
  position: absolute;
  left: 7px;
  right: 7px;
  top: 50%;
  height: 2px;
  border-radius: 2px;
  background-color: var(--on-cyan);
  transform: translateY(-50%);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: var(--font-narrow);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--paper);
}
.brand-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-soft);
}

/* 胶囊导航 */
.site-nav { display: flex; align-items: center; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  border-radius: var(--radius-pill);
  background-color: rgba(15, 39, 64, 0.72);
  border: 1px solid var(--line-hair);
}
.nav-item { display: flex; }
.nav-link {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
  transition: color 0.18s var(--ease-signal), background-color 0.18s var(--ease-signal);
}
.nav-link:hover { color: var(--paper); background-color: rgba(46, 216, 198, 0.14); }
.nav-link[aria-current="page"] {
  color: var(--on-cyan);
  background-color: var(--cyan);
}

/* 状态条与右侧区块 */
.header-side {
  display: flex;
  align-items: center;
  gap: 10px;
}
.status-strip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  background-color: rgba(46, 216, 198, 0.08);
  border: 1px solid rgba(46, 216, 198, 0.32);
  white-space: nowrap;
}
.status-dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: var(--cyan);
  box-shadow: 0 0 0 0 rgba(46, 216, 198, 0.55);
  animation: signal-pulse 2.4s var(--ease-signal) infinite;
}
@keyframes signal-pulse {
  0% { box-shadow: 0 0 0 0 rgba(46, 216, 198, 0.5); }
  70% { box-shadow: 0 0 0 7px rgba(46, 216, 198, 0); }
  100% { box-shadow: 0 0 0 0 rgba(46, 216, 198, 0); }
}
.status-label {
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cyan-soft);
}
.status-time {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--paper);
  padding-left: 8px;
  border-left: 1px solid rgba(138, 243, 230, 0.3);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-narrow);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease-signal), color 0.18s var(--ease-signal),
    border-color 0.18s var(--ease-signal), transform 0.18s var(--ease-signal);
}
.btn-signal {
  background-color: var(--signal);
  color: #2A1000;
}
.btn-signal:hover { background-color: var(--signal-soft); }
.btn-ghost {
  background-color: transparent;
  border-color: rgba(215, 227, 238, 0.3);
  color: var(--paper);
}
.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan-soft);
}
.btn:active { transform: translateY(1px); }

/* 移动菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  background-color: rgba(15, 39, 64, 0.92);
  border: 1px solid var(--line-hair);
  color: var(--paper);
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.nav-toggle-bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
}
.nav-toggle-bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background-color: var(--cyan);
  transition: transform 0.18s var(--ease-signal);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: auto;
  background-image: linear-gradient(180deg, var(--ink-900) 0%, #061420 100%);
  border-top: 1px solid var(--line-hair);
  color: var(--mist);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(46, 216, 198, 0.4) 0 1px, transparent 1px 18px);
}
.footer-inner {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding: clamp(38px, 6vw, 60px) var(--gutter) 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}
.footer-logo {
  display: block;
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--paper);
}
.footer-tagline {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-soft);
}
.footer-icp {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(169, 188, 210, 0.85);
}
.footer-title {
  margin-bottom: 14px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--paper);
}
.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}
.footer-list a {
  color: var(--mist);
  transition: color 0.18s var(--ease-signal);
}
.footer-list a:hover { color: var(--cyan); }
.footer-contact li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-label {
  font-family: var(--font-narrow);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: rgba(169, 188, 210, 0.7);
}
.contact-value {
  font-size: 14px;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.footer-bottom {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line-hair);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(169, 188, 210, 0.85);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb { padding-block: 16px 4px; }
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--mist);
}
.breadcrumb-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb-list li + li::before {
  content: "/";
  color: rgba(169, 188, 210, 0.45);
}
.breadcrumb a { color: var(--mist); transition: color 0.18s var(--ease-signal); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--paper); }

/* ---------- 9. 通用排版件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--cyan);
}
.page-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4.6vw, 56px);
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--mist);
}

/* ---------- 10. 面板 / 标签 / 网格 ---------- */
.panel {
  background-color: var(--ink-800);
  border: 1px solid var(--line-hair);
  border-radius: var(--radius-m);
  padding: clamp(18px, 2.4vw, 28px);
}
.panel--outline {
  background-color: transparent;
  border-style: dashed;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(46, 216, 198, 0.35);
  background-color: rgba(46, 216, 198, 0.08);
  color: var(--cyan-soft);
  font-family: var(--font-narrow);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.tag--signal {
  border-color: rgba(255, 122, 47, 0.45);
  background-color: rgba(255, 122, 47, 0.12);
  color: var(--signal-soft);
}

.grid { display: grid; gap: clamp(16px, 2.4vw, 28px); }
.grid-2, .grid-3 { grid-template-columns: 1fr; }

.grid-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 36px);
}

/* ---------- 11. 索引行 ---------- */
.index-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-hair);
}
.index-item { border-bottom: 1px solid var(--line-hair); }
.index-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 4px;
  transition: transform 0.18s var(--ease-signal), color 0.18s var(--ease-signal);
}
.index-link:hover { transform: translateX(4px); color: var(--cyan); }
.index-num {
  min-width: 36px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}
.index-dot {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: rgba(169, 188, 210, 0.45);
  transition: background-color 0.18s var(--ease-signal), box-shadow 0.18s var(--ease-signal);
}
.index-link:hover .index-dot {
  background-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(46, 216, 198, 0.16);
}

/* ---------- 12. 分段切换 ---------- */
.segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--ink-800);
  border: 1px solid var(--line-hair);
}
.segmented [role="tab"] {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  color: var(--mist);
  font-family: var(--font-narrow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.18s var(--ease-signal), color 0.18s var(--ease-signal);
}
.segmented [role="tab"]:hover { color: var(--paper); }
.segmented [role="tab"][aria-selected="true"] {
  background-color: var(--cyan);
  color: var(--on-cyan);
}
[role="tabpanel"][hidden] { display: none; }

/* ---------- 13. 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-hair);
  background-image: linear-gradient(150deg, var(--ink-800) 0%, var(--ink-900) 100%);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(138, 243, 230, 0.18);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }

/* ---------- 14. 进入视口 ---------- */
html.has-js .reveal,
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease-signal), transform 0.5s var(--ease-signal);
}
html.has-js .reveal.is-visible,
html.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 15. 响应式 ---------- */
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
  }
  .site-nav { justify-self: center; }
  .header-side { justify-self: end; }
  .grid-split { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); }
  .grid-split--flip .col-main { grid-column: 2; }
  .grid-split--flip .col-side { grid-column: 1; grid-row: 1; }
}

@media (min-width: 1040px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; }
}

@media (max-width: 1079px) {
  .header-cta { display: none; }
}

@media (max-width: 899px) {
  .site-nav {
    position: absolute;
    left: var(--gutter);
    right: var(--gutter);
    top: calc(100% + 10px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border-radius: var(--radius-m);
    background-color: rgba(15, 39, 64, 0.98);
    border: 1px solid var(--line-hair);
    box-shadow: var(--shadow-panel);
  }
  .site-nav[data-open] { display: flex; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 0;
    background-color: transparent;
    border: 0;
    border-radius: 0;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: var(--radius-s);
    font-size: 14px;
  }
  .header-side { margin-left: auto; }
  .nav-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
  .status-time { display: none; }
  .brand-tagline { font-size: 10px; letter-spacing: 0.14em; }
}

@media (max-width: 520px) {
  .status-strip { display: none; }
  .header-side { margin-left: auto; }
}

/* ---------- 16. 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html.has-js .reveal,
  html.has-js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .index-link:hover { transform: none; }
}