@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=Noto+Sans+SC:wght@400;500;700&display=swap");

:root {
  --line: rgba(40, 30, 10, 0.1);
  --text: #111111;
  --muted: #655f54;
  --shadow: 0 24px 60px rgba(58, 39, 6, 0.12);
  --radius-xl: 34px;
  --radius-lg: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Space Grotesk", "Noto Sans SC", sans-serif;
  background:
    radial-gradient(circle at top center, rgba(255, 255, 255, 0.72) 0%, transparent 32%),
    linear-gradient(180deg, #fbf4e5 0%, #f4e4bd 52%, #efddb2 100%);
}

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

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

.site-shell {
  min-height: 100vh;
}

.site-header,
.page-main {
  width: min(100%, 100vw);
}

.site-header {
  position: fixed;
  top: 16px;
  left: -10px;
  right: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 18px;
  pointer-events: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 248, 230, 0.88);
  box-shadow: var(--shadow);
  pointer-events: auto;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand img {
  width: 46px;
  height: auto;
  object-fit: contain;
}

.nav-cta,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.nav-cta,
.primary-button {
  background: #050505;
  color: #ffffff;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.16);
}

.nav-cta {
  min-height: 42px;
  padding: 0 18px;
  pointer-events: auto;
  font-size: 0.92rem;
}

.secondary-button {
  border: 1px solid rgba(17, 17, 17, 0.16);
  background: rgba(255, 252, 245, 0.86);
}

.nav-cta:hover,
.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.page-main {
  padding: 88px 24px 52px;
}

.hero-banner,
.poster-section {
  width: min(1380px, 100%);
  margin: 0 auto;
}

.hero-banner-inner {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  align-items: center;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 244, 218, 0.92)),
    linear-gradient(180deg, rgba(255, 240, 198, 0.4), transparent);
  box-shadow: var(--shadow);
}

.hero-banner-inner::after {
  content: "";
  position: absolute;
  inset: auto -6% -24% auto;
  width: min(38vw, 460px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 210, 84, 0.26) 0%, rgba(255, 210, 84, 0) 72%);
  pointer-events: none;
}

.hero-banner h1 {
  margin: 18px 0 0;
  letter-spacing: -0.06em;
  line-height: 0.96;
}

.hero-banner h1 {
  max-width: 10ch;
  font-size: clamp(3rem, 8vw, 6.8rem);
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.hero-lead,
.hero-meta,
.section-heading p,
.download-summary {
  max-width: 860px;
  color: var(--muted);
  line-height: 1.8;
}

.hero-lead {
  margin: 24px 0 0;
  font-size: clamp(1.04rem, 1.6vw, 1.2rem);
}

.hero-meta {
  margin: 14px 0 0;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.hero-media {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image {
  width: min(100%, 474px);
  height: auto;
  object-fit: contain;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  display: block;
}

.download-summary {
  margin-top: 18px;
  font-size: 0.96rem;
}

.download-notice {
  margin: 8px 0 0;
  color: #b42318;
  font-size: 0.96rem;
  line-height: 1.8;
}

.poster-section {
  padding-top: 28px;
}

.poster-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.contact-strip {
  display: flex;
  justify-content: center;
  gap: 12px 24px;
  flex-wrap: wrap;
  margin-top: 22px;
  color: var(--muted);
  text-align: center;
  font-size: 0.98rem;
  line-height: 1.8;
}

.poster-frame {
  display: grid;
  place-items: center;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px dashed rgba(17, 17, 17, 0.2);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(249, 233, 193, 0.9)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0));
  box-shadow: var(--shadow);
}

.poster-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-footer {
  width: min(1380px, calc(100% - 48px));
  margin: 32px auto 24px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 249, 237, 0.86);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px 24px;
  flex-wrap: wrap;
  color: var(--muted);
}

.footer-links,
.footer-meta,
.beian-links {
  display: flex;
  align-items: center;
  gap: 12px 18px;
  flex-wrap: wrap;
}

.beian-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.beian-public-security img {
  width: 18px;
  height: 18px;
  object-fit: contain;
  flex: 0 0 auto;
}

@media (max-width: 900px) {
  .site-header {
    padding-left: 18px;
    padding-right: 18px;
  }

  .page-main {
    padding-left: 12px;
    padding-right: 12px;
  }

  .poster-grid {
    grid-template-columns: 1fr;
  }

  .contact-strip {
    font-size: 0.94rem;
  }

  .hero-banner-inner {
    grid-template-columns: 1fr;
  }

  .hero-image {
    width: min(100%, 424px);
    height: auto;
  }

  .site-footer {
    width: min(1380px, calc(100% - 24px));
    padding: 20px 18px;
  }
}

@media (max-width: 640px) {
  .brand {
    gap: 8px;
    padding: 8px 12px;
    font-size: 0.98rem;
  }

  .brand img {
    width: 40px;
  }

  .nav-cta {
    min-height: 38px;
    padding: 0 14px;
    font-size: 0.84rem;
  }

  .hero-banner h1 {
    max-width: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-image {
    width: min(100%, 349px);
    height: auto;
  }

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

  .footer-links,
  .footer-meta,
  .beian-links {
    gap: 10px 14px;
  }
}