:root {
  --bg: #f7f3ef;
  --bg-soft: #fffaf6;
  --ink: #1a1410;
  --muted: #5c524a;
  --line: #e4d8ce;
  --brand: #c41e4a;
  --brand-deep: #8f1234;
  --accent: #d97706;
  --card: #ffffff;
  --shadow: 0 12px 40px rgba(26, 20, 16, 0.08);
  --radius: 14px;
  --max: 1120px;
  --font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  padding-top: 0;
  overflow-x: hidden;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(196, 30, 74, 0.12), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(217, 119, 6, 0.1), transparent 55%),
    linear-gradient(180deg, #faf6f2 0%, var(--bg) 40%, #f3ebe4 100%);
  line-height: 1.75;
  font-size: 16px;
}

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

a {
  color: var(--brand-deep);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--brand);
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-top {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: auto !important;
  width: 100% !important;
  max-width: 100vw !important;
  margin: 0 !important;
  z-index: 2147483000 !important;
  background: #f7f3ef;
  border-bottom: 1px solid #e4d8ce;
  /* 不要使用 transform / backdrop-filter，部分浏览器会导致 fixed 失效并随页面滚动 */
}

.site-top-spacer {
  display: block;
  width: 100%;
  height: 72px;
  pointer-events: none;
  visibility: hidden;
}

.site-header {
  position: relative;
  width: 100%;
  background: transparent;
  border-bottom: 1px solid rgba(228, 216, 206, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  align-items: center;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--brand);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 0;
  cursor: pointer;
  color: var(--ink);
}

.nav-toggle-icon {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  position: relative;
  transition: background 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, top 0.2s ease;
}

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

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

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

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

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

.hero {
  padding: 3.2rem 0 2.4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  color: var(--ink);
  font-weight: 400;
}

.hero-copy .lead {
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36em;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.78rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #fff;
  box-shadow: 0 10px 24px rgba(196, 30, 74, 0.28);
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.05);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  color: var(--brand);
  border-color: rgba(196, 30, 74, 0.35);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  width: 100%;
  border-radius: 22px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.7);
  animation: floaty 6s ease-in-out infinite;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: auto -8% -8% auto;
  width: 42%;
  height: 42%;
  background: radial-gradient(circle, rgba(196, 30, 74, 0.22), transparent 70%);
  z-index: -1;
  pointer-events: none;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.section {
  padding: 2.6rem 0;
}

.section-head {
  margin-bottom: 1.4rem;
}

.section-head h2 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.3;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 46em;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.4rem;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--ink);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose h3 {
  margin: 1.6rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
}

.prose ul,
.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
  color: var(--muted);
}

.prose li {
  margin-bottom: 0.35rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.feature-card img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
  background: #efe6df;
}

.feature-card .body {
  padding: 0.95rem 1rem 1.1rem;
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
}

.shot-grid figure {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.shot-grid img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top;
}

.shot-grid figcaption {
  padding: 0.65rem 0.75rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
  align-items: center;
}

.split.reverse .text { order: 2; }
.split.reverse .media { order: 1; }

.split .media img {
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  object-position: top;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-cloud a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: rgba(196, 30, 74, 0.08);
  border: 1px solid rgba(196, 30, 74, 0.16);
  color: var(--brand-deep);
  font-size: 0.9rem;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin-bottom: 0.7rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
}

.faq details p {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.breadcrumb {
  padding: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
}

.page-hero {
  padding: 1.6rem 0 0.4rem;
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 400;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 42em;
}

.site-footer {
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
  background: rgba(255, 250, 246, 0.85);
  padding: 2rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.5rem;
}

.site-footer h3 {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
}

.site-footer p,
.site-footer li {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.4rem;
}

.copyright {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin: 0 0 0.6rem;
  font-weight: 400;
}

.error-page p {
  color: var(--muted);
  margin: 0 0 1.2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  animation: reveal 0.7s ease forwards;
}

.reveal.delay-1 { animation-delay: 0.12s; }
.reveal.delay-2 { animation-delay: 0.24s; }

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero-grid,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .split.reverse .text,
  .split.reverse .media {
    order: initial;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .shot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .site-top-spacer {
    height: 64px;
  }

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

  .header-inner {
    position: relative;
    flex-wrap: nowrap;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 0.75rem 0.75rem;
    margin: 0;
    background: #f7f3ef;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 20;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 0.65rem 0.4rem;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .feature-grid,
  .shot-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 1.8rem;
  }

  .hero-visual img,
  .split .media img,
  .feature-card img,
  .shot-grid img {
    max-height: none;
  }
}