/*
  模块名称：AIPD 根入口首页基础样式
  功能描述：定义黑金主题、导航、首屏背景和基础组件
  创建日期：2026-05-17
  作者：Codex
  主要变更：2026-05-17 拆分主题层并强化 OneClub 黑金质感；2026-05-18 优化移动端首屏密度并替换静态电影海报背景
  依赖模块：portal/index.html、portal/assets/portal-sections.css
*/
:root {
  --bg-deepest: #050508;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.12);
  --gold-primary: #e4bf7a;
  --gold-dark: #d4a050;
  --gold-light: #f0d8a8;
  --gold-pale: #f6e8c8;
  --gold-brown: #6b4300;
  --text-primary: #fff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-body: rgba(255, 255, 255, 0.66);
  --text-muted: rgba(255, 255, 255, 0.46);
  --line-soft: rgba(255, 255, 255, 0.1);
  --line-gold: rgba(228, 191, 122, 0.38);
  --container: 1160px;
  --radius: 20px;
  --shadow-gold: 0 18px 50px rgba(228, 191, 122, 0.18);
  color-scheme: dark;
}

@font-face {
  font-family: "MF YaYun";
  src:
    local("MFYaYunNoncommercial"),
    local("造字工房雅韵体（非商用）"),
    url("fonts/MFYaYun_Noncommercial-Regular.otf") format("opentype");
  font-display: swap;
  unicode-range: U+7EC7, U+68A6, U+7A7A, U+95F4;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg-deepest);
  color: var(--text-primary);
  font-family: var(--user-font-family, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", sans-serif);
  overflow-x: hidden;
}

html[data-aipd-font-scale="small"] body { font-size: 15px; }
html[data-aipd-font-scale="large"] body { font-size: 17px; }

body::before {
  position: fixed;
  inset: 0;
  z-index: -4;
  content: "";
  background:
    radial-gradient(circle at 50% 26%, rgba(228, 191, 122, 0.1), transparent 42%),
    radial-gradient(circle at 14% 86%, rgba(212, 160, 80, 0.13), transparent 34%),
    #050508;
}

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

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

.page-shell {
  overflow: hidden;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  height: 64px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 0 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(5, 5, 8, 0.82);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(246, 213, 141, 0.54);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 38%, rgba(255, 224, 137, 0.2), rgba(6, 7, 6, 0.92) 68%);
  box-shadow: inset 0 1px 0 rgba(255, 244, 199, 0.28), 0 0 22px rgba(218, 166, 72, 0.26);
  color: var(--gold-brown);
  font-weight: 800;
  overflow: hidden;
}

.brand-logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-copy strong {
  display: inline-block;
  font-family: "MF YaYun", "MFYaYunNoncommercial", "造字工房雅韵体（非商用）", "Long Cang", "Songti SC", "Source Han Serif SC", STSong, serif;
  font-size: 36px;
  font-weight: 640;
  letter-spacing: -0.04em;
  color: transparent;
  background: linear-gradient(180deg, #fff7db 0%, #efc66d 42%, #9f671e 72%, #f7df98 100%);
  background-clip: text;
  -webkit-background-clip: text;
  text-shadow: 0 0 22px rgba(226, 179, 92, 0.22);
  transform: scaleY(1.3);
  transform-origin: center;
}

.brand-copy small {
  color: var(--text-muted);
  font-size: 11px;
}

.main-nav {
  position: relative;
  display: flex;
  justify-content: center;
  justify-self: center;
  gap: 4px;
  padding: 6px;
  border: 1px solid rgba(228, 191, 122, 0.24);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.025)),
    radial-gradient(circle at 50% 0%, rgba(228, 191, 122, 0.14), transparent 58%),
    rgba(8, 8, 10, 0.72);
  box-shadow:
    inset 0 1px 0 rgba(255, 241, 198, 0.12),
    inset 0 -1px 0 rgba(0, 0, 0, 0.72),
    0 18px 44px rgba(0, 0, 0, 0.32),
    0 0 28px rgba(228, 191, 122, 0.08);
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
  font-weight: 760;
  backdrop-filter: blur(18px);
}

.main-nav::before {
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: inherit;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(228, 191, 122, 0.16), transparent);
  opacity: 0.8;
}

.main-nav a,
.text-link {
  transition: color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.main-nav a {
  position: relative;
  min-width: 72px;
  padding: 10px 16px;
  border-radius: 999px;
  text-align: center;
  line-height: 1;
}

.main-nav a::after {
  position: absolute;
  top: 50%;
  right: -3px;
  width: 1px;
  height: 14px;
  content: "";
  background: linear-gradient(to bottom, transparent, rgba(228, 191, 122, 0.22), transparent);
  transform: translateY(-50%);
}

.main-nav a:last-child::after {
  display: none;
}

.main-nav a:hover,
.main-nav a.active,
.text-link:hover {
  color: var(--gold-primary);
}

.main-nav a:hover,
.main-nav a.active {
  background:
    linear-gradient(180deg, rgba(228, 191, 122, 0.18), rgba(228, 191, 122, 0.06)),
    rgba(255, 255, 255, 0.04);
  box-shadow:
    inset 0 1px 0 rgba(255, 241, 198, 0.18),
    0 8px 20px rgba(0, 0, 0, 0.24),
    0 0 20px rgba(228, 191, 122, 0.14);
  text-shadow: 0 0 18px rgba(228, 191, 122, 0.34);
}

.main-nav a:hover {
  transform: translateY(-1px);
}

.header-cta,
.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.header-cta {
  padding: 0 16px;
  border: 1px solid rgba(228, 191, 122, 0.36);
  background: rgba(228, 191, 122, 0.06);
  color: var(--gold-primary);
}

.auth-entry {
  gap: 9px;
}

.auth-avatar {
  display: grid;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(228, 191, 122, 0.42);
  border-radius: 50%;
  background: radial-gradient(circle at 42% 30%, #fff3c9, #d6a24d 54%, #2c1b07 100%);
  color: #241405;
  font-size: 12px;
  font-weight: 900;
}

.auth-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-section {
  position: relative;
  min-height: 100svh;
  padding: 104px 24px 52px;
  isolation: isolate;
}

.hero-media,
.hero-overlay {
  position: fixed;
  inset: 0;
}

.hero-media {
  z-index: -3;
  overflow: hidden;
  background: #050508;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
  opacity: 0.58;
  filter: saturate(0.86) contrast(1.12) brightness(0.78);
}

.hero-overlay {
  z-index: -2;
  background:
    linear-gradient(to bottom, rgba(5, 5, 8, 0.18) 0%, rgba(5, 5, 8, 0.42) 34%, rgba(5, 5, 8, 0.82) 76%, rgba(5, 5, 8, 0.98) 100%),
    linear-gradient(90deg, rgba(5, 5, 8, 0.72) 0%, rgba(5, 5, 8, 0.28) 42%, rgba(5, 5, 8, 0.62) 100%),
    radial-gradient(circle at 48% 37%, rgba(228, 191, 122, 0.17), transparent 58%);
  pointer-events: none;
}

.hero-overlay::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(246, 232, 200, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 232, 200, 0.022) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.72), transparent 82%);
}

.hero-grid,
.content-band,
.site-footer {
  width: min(100%, var(--container));
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  min-height: 640px;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  justify-items: center;
  gap: 26px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold-primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: "Songti SC", "Source Han Serif SC", STSong, serif;
  font-weight: 900;
  letter-spacing: 0;
}

h1 {
  max-width: min(1360px, calc(100vw - 56px));
  margin-bottom: 18px;
  background: linear-gradient(135deg, #fff7e6 0%, var(--gold-primary) 48%, var(--gold-dark) 100%);
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 18px rgba(228, 191, 122, 0.34));
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.12;
}

.hero-copy h1 {
  white-space: nowrap;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3.8vw, 44px);
  line-height: 1.12;
}

.hero-copy p {
  max-width: 650px;
  margin-right: auto;
  margin-left: auto;
  color: var(--text-body);
  font-size: 18px;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  padding: 0 22px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-pale), var(--gold-dark));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45), var(--shadow-gold);
  color: var(--gold-brown);
}

.btn-secondary {
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

@media (max-width: 620px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 10px 14px 12px;
  }

  .brand {
    justify-content: center;
  }

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

  .brand-copy strong {
    font-size: 28px;
  }

  .brand-copy small {
    font-size: 10px;
  }

  .main-nav {
    width: 100%;
    justify-content: center;
    gap: 4px;
    overflow: visible;
    padding: 5px;
    font-size: 12px;
  }

  .main-nav a {
    min-width: 0;
    padding: 8px 10px;
    line-height: 1;
  }

  .main-nav a::after {
    display: none;
  }

  .hero-section {
    min-height: auto;
    padding: 128px 14px 28px;
  }

  .hero-media img {
    opacity: 0.64;
    object-position: 51% top;
  }

  .hero-overlay {
    background:
      linear-gradient(to bottom, rgba(5, 5, 8, 0.18) 0%, rgba(5, 5, 8, 0.58) 42%, rgba(5, 5, 8, 0.98) 100%),
      linear-gradient(90deg, rgba(5, 5, 8, 0.58), rgba(5, 5, 8, 0.34), rgba(5, 5, 8, 0.62)),
      radial-gradient(circle at 50% 22%, rgba(228, 191, 122, 0.16), transparent 58%);
  }

  .hero-grid {
    min-height: 580px;
    gap: 22px;
  }

  .eyebrow {
    margin-bottom: 10px;
    font-size: 10px;
    letter-spacing: 0.2em;
  }

  h1 {
    max-width: 94vw;
    margin-right: auto;
    margin-bottom: 14px;
    margin-left: auto;
    font-size: clamp(22px, 6.1vw, 30px);
    line-height: 1.18;
  }

  .hero-copy h1 {
    white-space: normal;
  }

  h2 {
    font-size: clamp(24px, 7.5vw, 30px);
  }

  .hero-copy p {
    max-width: 352px;
    font-size: 15px;
    line-height: 1.72;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 22px;
  }

  .btn {
    min-height: 42px;
    padding: 0 18px;
  }
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 700ms ease, transform 700ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}