/* 胡老师 · 读者书房 — 美术馆气质 */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400&family=Noto+Serif+SC:wght@300;400;500;600&display=swap');
@import url('decor.css');

:root {
  --bg-warm: #f5f1ea;
  --bg-panel: #ebe6dc;
  --bg-card: #faf8f4;
  --ink: #1a1814;
  --ink-soft: #4a4540;
  --ink-muted: #7a736a;
  --accent: #6b5d4f;
  --accent-gold: #9a8468;
  --line: rgba(26, 24, 20, 0.08);
  --line-strong: rgba(26, 24, 20, 0.14);
  --shadow: 0 4px 24px rgba(26, 24, 20, 0.06);
  --shadow-hover: 0 12px 40px rgba(26, 24, 20, 0.1);
  --font-display: 'Cormorant Garamond', 'Noto Serif SC', serif;
  --font-body: 'Noto Serif SC', 'Cormorant Garamond', serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 2px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  max-width: 100%;
}

html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  background: var(--bg-warm);
  line-height: 1.75;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(154, 132, 104, 0.06), transparent),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(245, 241, 234, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(245, 241, 234, 0.95);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.logo span {
  font-weight: 400;
  color: var(--ink-muted);
  font-size: 0.85em;
}

.nav-main {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-main a {
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
}

.nav-main a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-gold);
  transition: width var(--transition);
}

.nav-main a:hover::after,
.nav-main a.active::after {
  width: 100%;
}

.nav-main a.active {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--ink);
  margin: 6px 0;
  transition: var(--transition);
}

main {
  padding-top: 5rem;
  min-height: 100vh;
}

.container {
  width: min(1200px, 92vw);
  margin-left: auto;
  margin-right: auto;
}

.container-narrow {
  width: min(720px, 92vw);
  margin: 0 auto;
}

.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) 0;
  position: relative;
}

.hero-label {
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-md);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 32em;
  margin-bottom: var(--space-xl);
  font-weight: 300;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.8em;
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: all var(--transition);
}

.btn:hover {
  background: var(--ink);
  color: var(--bg-warm);
}

.btn-primary {
  background: var(--ink);
  color: var(--bg-warm);
}

.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink-soft);
}

.btn-ghost:hover {
  border-color: var(--ink);
  color: var(--ink);
  background: transparent;
}

.hero-frame {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: min(280px, 35vw);
  aspect-ratio: 3/4;
  border: 1px solid var(--line-strong);
  opacity: 0.5;
  pointer-events: none;
}

.hero-frame::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid var(--line);
}

@media (max-width: 900px) {
  .hero-frame { display: none; }
}

.section {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--line);
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.section-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent-gold);
  letter-spacing: 0.2em;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.section-link {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

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

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card.card--clickable {
  cursor: pointer;
}

.card.card--clickable:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: var(--space-sm);
}

.card-image {
  aspect-ratio: 4/5;
  background: linear-gradient(145deg, var(--bg-panel) 0%, #ddd8ce 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: relative;
}

.card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,24,20,0.04), transparent 40%);
}

.card-body {
  padding: var(--space-md) var(--space-md) var(--space-lg);
}

.card-tag {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-xs);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
  font-weight: 300;
  margin-bottom: var(--space-md);
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.card-price {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--accent);
}

.card-btn {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.4em 0;
  border-bottom: 1px solid currentColor;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: color var(--transition);
}

.card-btn:hover {
  color: var(--accent-gold);
}

.card-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.about-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-block .placard {
  border-left: 2px solid var(--accent-gold);
  padding-left: var(--space-md);
}

.about-block h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.about-block p {
  color: var(--ink-soft);
  font-weight: 300;
}

.roles {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.role-tag {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  padding: 0.35em 0.9em;
  border: 1px solid var(--line-strong);
  color: var(--ink-muted);
}

@media (max-width: 768px) {
  .about-block { grid-template-columns: 1fr; }
}

.agent-banner {
  background: var(--ink);
  color: var(--bg-warm);
  padding: var(--space-xl);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-lg);
  align-items: center;
  margin: var(--space-xl) 0;
}

.agent-banner h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  margin-bottom: var(--space-xs);
}

.agent-banner p {
  font-weight: 300;
  opacity: 0.85;
  font-size: 0.95rem;
}

.agent-banner .btn {
  border-color: var(--bg-warm);
  color: var(--bg-warm);
  white-space: nowrap;
}

.agent-banner .btn:hover {
  background: var(--bg-warm);
  color: var(--ink);
}

@media (max-width: 600px) {
  .agent-banner {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-nav {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.footer-nav a,
.footer-coming {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
}

.footer-coming {
  opacity: 0.6;
  cursor: default;
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
}

.page-hero {
  padding: var(--space-xl) 0 var(--space-lg);
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.page-hero p {
  color: var(--ink-soft);
  font-weight: 300;
  max-width: 36em;
  margin: 0 auto;
}

.notice-bar {
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-panel);
  border: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-main {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(280px, 85vw);
    height: 100vh;
    background: var(--bg-warm);
    flex-direction: column;
    padding: 5rem var(--space-lg) var(--space-lg);
    border-left: 1px solid var(--line);
    transition: right var(--transition);
    gap: var(--space-md);
  }

  .nav-main.open { right: 0; }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26, 24, 20, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
  }

  .nav-overlay.open {
    opacity: 1;
    visibility: visible;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}