/*
  每日大赛原创主页设计哲学：机能未来主义 + 赛道杂志拼贴风。
  关键原则：不做居中模板感，不用俗套紫渐变，不用统一圆角，不用 Inter。
  每个模块都围绕“每日大赛原创主页 + 视频 + 改装 + AI + 社区”组织视觉层级。
*/
:root {
  --bg: #0c1017;
  --panel: #121926;
  --panel-soft: #192335;
  --ink: #f4efe7;
  --muted: #aab6c8;
  --line: rgba(255,255,255,0.1);
  --accent: #ff7e2f;
  --accent-soft: #ffd09c;
  --mint: #7ee6d3;
  --gold: #f6c55f;
  --shadow: 0 30px 60px rgba(0,0,0,0.36);
  --radius: 22px;
  --radius-tight: 14px;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(126,230,211,0.08), transparent 22%),
    linear-gradient(180deg, #0a0f16 0%, #111a26 45%, #0b1016 100%);
  color: var(--ink);
  line-height: 1.75;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
video { display: block; width: 100%; height: 100%; object-fit: cover; }
.noise-wrap, .noise-wrap * { display: none !important; max-height: 0 !important; overflow: hidden !important; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(10, 15, 22, 0.78);
  border-bottom: 1px solid var(--line);
}
.header-shell {
  min-height: 82px;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 18px;
}
.brand-lockup { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand-lockup__icon { width: 52px; height: 52px; border-radius: 16px; box-shadow: var(--shadow); }
.brand-lockup__logo { width: min(360px, 48vw); min-width: 180px; }
.main-nav { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 10px; }
.nav-link {
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  transition: 180ms ease;
}
.nav-link:hover { color: var(--ink); border-color: rgba(255,126,47,0.5); background: rgba(255,126,47,0.12); }
.nav-toggle {
  display: none;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: transparent;
  color: var(--ink);
}

.hero-section { padding: 38px 0 24px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.88fr; gap: 28px; align-items: stretch; }
.hero-copy {
  padding: 42px;
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(145deg, rgba(18,25,38,0.94), rgba(12,16,23,0.92));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -80px -80px auto;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(255,126,47,0.35), transparent 70%);
  filter: blur(20px);
}
.eyebrow, .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(126,230,211,0.1);
  border: 1px solid rgba(126,230,211,0.25);
  color: var(--mint);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
h1, h2, h3, h4, h5, h6 { font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif; margin: 0; line-height: 1.18; }
h1 { font-size: clamp(2.4rem, 4.8vw, 4.9rem); margin-top: 18px; max-width: 12ch; }
h2 { font-size: clamp(1.8rem, 3.1vw, 3rem); }
h3 { font-size: 1.22rem; }
p { margin: 0; color: var(--muted); }
.hero-lead { margin-top: 18px; font-size: 1.03rem; max-width: 62ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button-primary, .button-secondary, .text-link { transition: 180ms ease; }
.button-primary, .button-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 22px; border-radius: 999px; font-weight: 700;
}
.button-primary { background: linear-gradient(135deg, #ff7e2f, #ffb04d); color: #10151e; }
.button-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 30px rgba(255,126,47,0.24); }
.button-secondary { border: 1px solid rgba(255,255,255,0.14); color: var(--ink); }
.button-secondary:hover { background: rgba(255,255,255,0.06); }
.hero-notes { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-notes span {
  padding: 9px 12px; border-radius: 14px; background: rgba(255,255,255,0.06); color: #dde7f5; font-size: 14px;
}
.hero-panel { display: grid; gap: 18px; }
.panel-image { width: 100%; border-radius: 26px; border: 1px solid rgba(255,255,255,0.08); box-shadow: var(--shadow); }
.tall-image { min-height: 100%; object-fit: cover; }
.floating-panel {
  padding: 22px; border-radius: 24px; background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03)); border: 1px solid rgba(255,255,255,0.08);
}
.floating-panel ul, .bullet-panel ul, .footer-links { margin: 14px 0 0; padding-left: 18px; color: var(--muted); }
.floating-panel li, .bullet-panel li, .footer-links li { margin-bottom: 8px; }
.metrics-section { padding: 0 0 30px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat-card { padding: 22px; border-radius: 22px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); box-shadow: var(--shadow); }
.stat-card strong { display: block; font-size: 2rem; color: var(--accent-soft); margin-bottom: 6px; }

.section-shell { padding: 34px 0; }
.dark-band { background: rgba(10, 14, 20, 0.55); border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }
.warm-band { background: linear-gradient(180deg, rgba(255,126,47,0.06), rgba(255,126,47,0.02)); }
.section-heading { display: grid; gap: 14px; margin-bottom: 22px; max-width: 68ch; }
.section-split .split-grid,
.showcase-grid,
.community-layout,
.page-hero__grid,
.footer-grid { display: grid; gap: 22px; }
.section-split .split-grid { grid-template-columns: 1.15fr 0.85fr; align-items: stretch; }
.showcase-grid { grid-template-columns: 1.05fr 0.95fr; align-items: stretch; }
.reverse-grid { grid-template-columns: 0.95fr 1.05fr; }
.community-layout { grid-template-columns: 1.1fr 0.9fr; align-items: start; }
.page-hero { padding: 32px 0 16px; }
.page-hero__grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.breadcrumb a { color: #dfe7f1; }

.bullet-panel, .json-panel, .prose-panel {
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.json-panel { white-space: pre-wrap; overflow: auto; color: #d7e0ef; font-size: 14px; }
.prose-panel p + p { margin-top: 16px; }

.info-grid, .video-grid, .article-grid, .expert-grid { display: grid; gap: 18px; }
.info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.compact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-card, .article-card, .expert-card {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
}
.info-card h3, .article-card h3, .expert-card h3 { margin-bottom: 10px; }
.article-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-meta, .expert-card__label { color: var(--gold); font-size: 13px; margin-bottom: 10px; letter-spacing: 0.06em; text-transform: uppercase; }
.text-link { display: inline-flex; margin-top: 14px; color: var(--mint); font-weight: 700; }
.text-link:hover { opacity: 0.86; }
.expert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.video-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.video-card {
  border-radius: 24px;
  overflow: hidden;
  background: #0f1621;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  transition: transform 180ms ease, border-color 180ms ease;
}
.video-card:hover { transform: translateY(-4px); border-color: rgba(255,126,47,0.55); }
.video-card__media-wrap { position: relative; aspect-ratio: 4 / 5; overflow: hidden; background: #111; }
.video-card__media { height: 100%; object-fit: cover; filter: saturate(0.95) contrast(1.02); }
.video-card__body { padding: 18px; display: grid; gap: 10px; }
.play-badge {
  position: absolute; inset: auto auto 18px 18px;
  padding: 10px 16px; border-radius: 999px; border: 0;
  background: rgba(255,126,47,0.92); color: #11161f; font-weight: 800;
  opacity: 0; transform: translateY(12px); pointer-events: none; transition: 180ms ease;
}
.video-card:hover .play-badge,
.video-card.is-hover .play-badge { opacity: 1; transform: translateY(0); }
.video-chip {
  position: absolute; top: 16px; left: 16px; padding: 7px 10px; border-radius: 999px;
  background: rgba(10,15,22,0.74); border: 1px solid rgba(255,255,255,0.14); color: var(--ink); font-size: 13px;
}

.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 18px 22px; border-radius: 20px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); }
.faq-item summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.faq-item p { margin-top: 12px; }

.final-cta__box {
  display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center;
  padding: 28px; border-radius: 28px; background: linear-gradient(135deg, rgba(255,126,47,0.16), rgba(126,230,211,0.1)); border: 1px solid rgba(255,255,255,0.08);
}

.site-footer { padding: 30px 0 44px; border-top: 1px solid rgba(255,255,255,0.08); background: rgba(7,10,16,0.88); }
.footer-grid { grid-template-columns: 1.2fr 0.7fr 0.8fr; align-items: start; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand__icon { width: 48px; height: 48px; border-radius: 14px; }
.footer-brand__logo { width: min(280px, 100%); }
.update-line { margin-top: 14px; color: var(--accent-soft); font-weight: 700; }

.toast-note {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  padding: 14px 18px; border-radius: 16px; background: rgba(10,15,22,0.96); color: var(--ink);
  border: 1px solid rgba(255,126,47,0.4); box-shadow: var(--shadow); opacity: 0; transform: translateY(8px); pointer-events: none; transition: 180ms ease;
}
.toast-note.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1100px) {
  .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .info-grid, .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid, .section-split .split-grid, .showcase-grid, .reverse-grid, .community-layout, .page-hero__grid, .footer-grid, .final-cta__box { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .header-shell { grid-template-columns: 1fr auto; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    display: none; grid-column: 1 / -1; justify-content: flex-start; padding-bottom: 10px;
  }
  .main-nav.is-open { display: flex; }
  .brand-lockup__logo { width: min(220px, 56vw); }
  .hero-copy { padding: 28px; }
  .info-grid, .compact-grid, .article-grid, .expert-grid, .video-grid, .stat-grid { grid-template-columns: 1fr; }
  .container { width: min(var(--max), calc(100% - 22px)); }
}