/* ==========================================================
   新莆京平台娱乐 · 全站共享样式
   深紫夜幕 × 鎏金锚点 × 霓虹蓝交互
   ========================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --bg-deep: #0D0B1A;
  --bg-panel: #1A1628;
  --gold-start: #F5D576;
  --gold-end: #B8860B;
  --neon: #00E5FF;
  --text-main: #FFFFFF;
  --text-sub: #B0AEB8;
  --line: #3A2E5A;
  --alert: #FF4D6D;

  --font-head: "Noto Serif SC", "Songti SC", SimSun, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", "Roboto Mono", Consolas, "Courier New", monospace;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;

  --content-width: 1440px;
  --header-h: 72px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 70% 45% at 12% -10%, rgba(184, 134, 11, 0.14), transparent 60%),
    radial-gradient(ellipse 55% 38% at 108% 18%, rgba(0, 229, 255, 0.07), transparent 60%),
    radial-gradient(ellipse 90% 60% at 50% 115%, rgba(245, 213, 118, 0.04), transparent 70%),
    linear-gradient(180deg, #0D0B1A 0%, #0A0815 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

p {
  margin: 0;
}

a {
  color: var(--neon);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

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

ul,
ol {
  list-style: none;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

::selection {
  background: rgba(245, 213, 118, 0.9);
  color: var(--bg-deep);
}

:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 6px;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--neon);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 14px;
  transform: translateY(-180%);
  transition: transform 0.25s ease;
}

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

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

/* ---------- 内容容器 ---------- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 32px;
}

.container-wide {
  max-width: 1600px;
}

.main-content {
  padding-top: calc(var(--header-h) + 24px);
  min-height: 60vh;
}

/* ---------- 悬浮胶囊头部 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 14px 16px 0;
  pointer-events: none;
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--gold-end), var(--gold-start), var(--neon));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.12s linear;
}

.capsule-nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  max-width: calc(var(--content-width) - 32px);
  padding: 10px 14px 10px 20px;
  background: rgba(26, 22, 40, 0.85);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  box-shadow:
    0 10px 36px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(245, 213, 118, 0.1);
  pointer-events: auto;
}

/* 品牌标识 */
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-main);
}

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

.brand-core {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.brand-accent {
  background: linear-gradient(135deg, var(--gold-start), var(--gold-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.brand-suffix {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-sub);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.version-chip {
  padding: 3px 10px;
  border: 1px solid rgba(245, 213, 118, 0.45);
  border-radius: var(--radius-pill);
  background: rgba(245, 213, 118, 0.08);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold-start);
  white-space: nowrap;
}

/* 主导航 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  color: var(--text-sub);
  font-size: 14px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: color 0.25s ease, background 0.25s ease;
}

.nav-link:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link[aria-current="page"] {
  color: var(--bg-deep);
  background: linear-gradient(135deg, var(--gold-start), var(--gold-end));
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(245, 213, 118, 0.28);
}

/* 移动端开关 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(26, 22, 40, 0.9);
  transition: border-color 0.25s ease;
}

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

.nav-toggle-bars {
  position: relative;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-start);
  transition: background 0.2s ease;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-start);
  transition: top 0.25s ease, transform 0.25s ease;
}

.nav-toggle-bars::before {
  top: -6px;
}

.nav-toggle-bars::after {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] {
  border-color: rgba(245, 213, 118, 0.5);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after {
  top: 0;
  transform: rotate(-45deg);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 88px;
  background: linear-gradient(180deg, var(--bg-deep) 0%, #0A0714 100%);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-start), transparent);
}

.site-footer p {
  margin: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1.1fr;
  gap: 48px;
  padding: 56px 0 44px;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-main);
}

.footer-logo:hover {
  color: var(--text-main);
}

.footer-tagline {
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-start);
}

.footer-trust {
  max-width: 46ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-sub);
}

.footer-feedback {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  padding: 7px 18px;
  border: 1px solid rgba(245, 213, 118, 0.35);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-start);
  transition: background 0.25s ease, color 0.25s ease;
}

.footer-feedback:hover {
  background: rgba(245, 213, 118, 0.1);
  color: var(--text-main);
}

.footer-heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-start);
}

.footer-link {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.2s ease, padding-left 0.25s ease;
}

.footer-link:hover {
  padding-left: 6px;
  color: var(--neon);
}

.footer-meta {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
}

.footer-meta.mono-digit {
  font-family: var(--font-mono);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  padding: 18px 0 24px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-sub);
}

.footer-base-sep {
  color: var(--line);
}

/* ---------- 分屏系统 ---------- */
.site-split {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.site-rail {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.site-main-col {
  min-width: 0;
}

/* ---------- 卡片与面板 ---------- */
.panel-card {
  padding: 28px;
  background: linear-gradient(150deg, rgba(26, 22, 40, 0.92), rgba(18, 15, 32, 0.92));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.25s ease;
}

.panel-card:hover {
  border-color: rgba(245, 213, 118, 0.4);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
}

.panel-card--accent {
  border-color: rgba(245, 213, 118, 0.35);
  background: linear-gradient(150deg, rgba(38, 31, 54, 0.95), rgba(24, 20, 40, 0.95));
  box-shadow: inset 0 1px 0 rgba(245, 213, 118, 0.12), 0 10px 34px rgba(184, 134, 11, 0.08);
}

.panel-card--accent:hover {
  border-color: rgba(245, 213, 118, 0.55);
}

/* ---------- 按钮 ---------- */
.btn-gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-pill);
  border: none;
  background: linear-gradient(135deg, var(--gold-start), var(--gold-end));
  color: var(--bg-deep);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 20px rgba(245, 213, 118, 0.22);
  transition: transform 0.2s ease, box-shadow 0.25s ease, filter 0.2s ease;
}

.btn-gold:hover {
  color: var(--bg-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(245, 213, 118, 0.32);
  filter: brightness(1.05);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(26, 22, 40, 0.6);
  color: var(--text-main);
  font-size: 15px;
  font-weight: 600;
  transition: border-color 0.25s ease, color 0.25s ease, transform 0.2s ease;
}

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

/* ---------- 标签与眉标 ---------- */
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: var(--radius-pill);
  background: rgba(0, 229, 255, 0.07);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--neon);
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-start);
}

.section-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-start), transparent);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-size: 13px;
  color: var(--text-sub);
}

.crumb-item {
  display: inline-flex;
  align-items: center;
}

.crumb-item + .crumb-item::before {
  content: "›";
  margin-right: 8px;
  color: var(--line);
  font-family: var(--font-mono);
}

.crumb-link {
  color: var(--text-sub);
}

.crumb-link:hover {
  color: var(--neon);
}

.crumb-current {
  color: var(--gold-start);
  font-weight: 600;
}

/* ---------- 图片容器 ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(150deg, rgba(26, 22, 40, 0.85), rgba(13, 11, 26, 0.85)),
    repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 255, 255, 0.02) 10px, rgba(255, 255, 255, 0.02) 11px);
}

.img-frame[data-img-ratio="16/9"] {
  aspect-ratio: 16 / 9;
}

.img-frame[data-img-ratio="4/3"] {
  aspect-ratio: 4 / 3;
}

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

.img-frame::before {
  content: attr(data-placeholder);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-sub);
  text-align: center;
}

/* ---------- 显现动画 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .site-split {
    grid-template-columns: 1fr;
  }

  .site-rail {
    position: static;
  }
}

@media (max-width: 860px) {
  .capsule-nav {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px 10px 16px;
    border-radius: 26px;
  }

  .brand-suffix {
    display: none;
  }

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

  .main-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding-top: 10px;
    margin-top: 4px;
    border-top: 1px solid var(--line);
  }

  .main-nav[data-open] {
    display: flex;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: 15px;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 44px 0 32px;
  }

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

@media (max-width: 560px) {
  .container {
    padding: 0 20px;
  }

  .panel-card {
    padding: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 0 24px;
  }

  .main-content {
    padding-top: calc(var(--header-h) + 16px);
  }
}

@media (max-width: 400px) {
  .brand-core {
    font-size: 16px;
  }

  .version-chip {
    padding: 2px 8px;
    font-size: 10px;
  }
}

/* ---------- 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;
  }

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