/* 蘑菇视频 - 侘寂禅意美学主样式 */
:root {
  --color-bg: #f5f2ed;
  --color-bg2: #ede9e2;
  --color-text: #2c2c2c;
  --color-muted: #7a7268;
  --color-accent: #8b7355;
  --color-line: #d4cfc7;
  --color-ink: #1a1a1a;
  --color-fog: #b8b0a4;
  --color-clay: #a08060;
  --color-moss: #6b7c5c;
  --font-main: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'STHeiti', sans-serif;
  --radius: 2px;
  --transition: 0.4s ease;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.04em;
}

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

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

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245,242,237,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-ink);
}

.site-logo span { color: var(--color-clay); }

.main-nav { display: flex; gap: 0; }

.main-nav a {
  padding: 8px 16px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  transition: color var(--transition);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 1px;
  background: var(--color-clay);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.main-nav a:hover { color: var(--color-ink); }
.main-nav a:hover::after { transform: scaleX(1); }

/* ===== SEARCH BAR ===== */
.search-bar-wrap {
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-line);
  padding: 10px 24px;
}

.search-bar-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
}

.search-bar-inner input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 9px 16px;
  font-size: 13px;
  font-family: var(--font-main);
  color: var(--color-text);
  outline: none;
  letter-spacing: 0.04em;
}

.search-bar-inner input::placeholder { color: var(--color-fog); }

.search-btn {
  background: var(--color-clay);
  color: #fff;
  border: none;
  padding: 9px 20px;
  font-size: 13px;
  font-family: var(--font-main);
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background var(--transition);
}

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

/* ===== HERO / BANNER ===== */
.hero {
  position: relative;
  height: 88vh;
  min-height: 520px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: brightness(0.72) saturate(0.8);
  transition: transform 8s ease;
}

.hero:hover .hero-bg { transform: scale(1.04); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(30,25,20,0.18) 0%, rgba(30,25,20,0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #f0ece6;
  padding: 0 24px;
}

.hero-content h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 300;
  letter-spacing: 0.18em;
  line-height: 1.4;
  margin-bottom: 16px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.3);
}

.hero-content p {
  font-size: clamp(13px, 1.8vw, 17px);
  letter-spacing: 0.12em;
  opacity: 0.85;
  margin-bottom: 36px;
}

.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn-primary {
  display: inline-block;
  padding: 12px 36px;
  border: 1px solid rgba(240,236,230,0.7);
  color: #f0ece6;
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: all var(--transition);
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(4px);
}

.btn-primary:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
  border-color: #fff;
}

.btn-secondary {
  display: inline-block;
  padding: 12px 36px;
  border: 1px solid rgba(240,236,230,0.4);
  color: rgba(240,236,230,0.75);
  font-size: 13px;
  letter-spacing: 0.12em;
  transition: all var(--transition);
}

.btn-secondary:hover { color: #f0ece6; border-color: rgba(240,236,230,0.7); }

/* ===== SECTION COMMON ===== */
.section { padding: 80px 24px; }
.section-alt { background: var(--color-bg2); }

.section-inner { max-width: 1200px; margin: 0 auto; }

.section-header { text-align: center; margin-bottom: 56px; }

.section-header h2 {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 13px;
  color: var(--color-muted);
  letter-spacing: 0.08em;
  max-width: 480px;
  margin: 0 auto;
}

.section-divider {
  width: 40px;
  height: 1px;
  background: var(--color-clay);
  margin: 16px auto 0;
}

/* ===== VIDEO CARDS ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

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

.video-card:hover {
  box-shadow: 0 8px 32px rgba(100,80,60,0.12);
  transform: translateY(-3px);
}

.video-thumb {
  position: relative;
  aspect-ratio: 3/2;
  overflow: hidden;
  background: var(--color-bg2);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease, filter 0.6s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.06);
  filter: brightness(0.85) saturate(0.9);
}

/* 自然光影斑驳纹理呼吸效果 */
.video-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 40% at 30% 40%, rgba(255,240,200,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 70% 60%, rgba(180,160,120,0.12) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.video-card:hover .video-thumb::after { opacity: 1; }

.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

.video-card:hover .play-btn { opacity: 1; }

.play-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.play-icon::after {
  content: '';
  border-left: 18px solid var(--color-clay);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}

.video-info { padding: 16px 18px 18px; }

.video-info h3 {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.6;
  margin-bottom: 8px;
  color: var(--color-ink);
}

.video-info p {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.video-meta {
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: var(--color-fog);
  letter-spacing: 0.04em;
}

.video-meta span::before { margin-right: 3px; }

/* ===== STORY SECTION ===== */
.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.story-img {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

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

.story-text h2 {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 400;
  letter-spacing: 0.12em;
  margin-bottom: 20px;
  color: var(--color-ink);
}

.story-text p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 2;
  letter-spacing: 0.06em;
}

/* ===== IMAGERY WALL ===== */
.imagery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.imagery-item {
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: var(--radius);
  position: relative;
}

.imagery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.imagery-item:hover img { transform: scale(1.08); }

/* ===== CREATORS ===== */
.creators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 32px;
}

.creator-card { text-align: center; }

.creator-avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 14px;
  border: 2px solid var(--color-line);
}

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

.creator-card h3 {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.creator-card p { font-size: 12px; color: var(--color-muted); letter-spacing: 0.06em; }

/* ===== REVIEWS ===== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}

.review-card::before {
  content: '\201C';
  position: absolute;
  top: 12px;
  left: 18px;
  font-size: 48px;
  color: var(--color-line);
  font-family: Georgia, serif;
  line-height: 1;
}

.review-content {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.9;
  letter-spacing: 0.04em;
  padding-top: 20px;
  margin-bottom: 16px;
}

.review-user {
  font-size: 12px;
  color: var(--color-fog);
  letter-spacing: 0.08em;
}

/* ===== FAQ ===== */
.faq-list { max-width: 760px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--color-line);
  padding: 20px 0;
}

.faq-q {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-q::after {
  content: '+';
  font-size: 20px;
  color: var(--color-clay);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item.open .faq-q::after { transform: rotate(45deg); }

.faq-a {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.9;
  letter-spacing: 0.04em;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.open .faq-a { max-height: 200px; padding-top: 12px; }

/* ===== PARTNERS ===== */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  align-items: center;
}

.partner-item {
  width: 120px;
  height: 48px;
  background: var(--color-bg2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--color-fog);
  letter-spacing: 0.06em;
  transition: border-color var(--transition);
}

.partner-item:hover { border-color: var(--color-clay); }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  color: var(--color-ink);
}

.contact-info p {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 2;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.qr-placeholder {
  width: 120px;
  height: 120px;
  background: var(--color-bg2);
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--color-fog);
  letter-spacing: 0.04em;
  margin-top: 20px;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-ink);
  color: rgba(240,236,230,0.7);
  padding: 48px 24px 32px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 24px;
}

.footer-brand { font-size: 18px; font-weight: 500; color: #f0ece6; letter-spacing: 0.1em; }
.footer-brand small { display: block; font-size: 11px; font-weight: 300; opacity: 0.6; margin-top: 4px; letter-spacing: 0.06em; }

.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a { font-size: 12px; letter-spacing: 0.06em; transition: color var(--transition); }
.footer-links a:hover { color: #f0ece6; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.04em;
  opacity: 0.55;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  font-size: 12px;
  color: var(--color-fog);
  letter-spacing: 0.04em;
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-clay); }
.breadcrumb span { margin: 0 6px; }

/* ===== INNER PAGE HERO ===== */
.inner-hero {
  padding: 64px 24px 48px;
  text-align: center;
  background: var(--color-bg2);
  border-bottom: 1px solid var(--color-line);
}

.inner-hero h1 {
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 300;
  letter-spacing: 0.16em;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.inner-hero p {
  font-size: 13px;
  color: var(--color-muted);
  letter-spacing: 0.08em;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== AI MODULE ===== */
.ai-demo {
  background: var(--color-bg2);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}

.ai-demo h3 {
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  color: var(--color-ink);
}

.ai-prompt-box {
  display: flex;
  gap: 0;
  max-width: 480px;
  margin: 0 auto 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.ai-prompt-box input {
  flex: 1;
  border: none;
  background: var(--color-bg);
  padding: 10px 16px;
  font-size: 13px;
  font-family: var(--font-main);
  outline: none;
  color: var(--color-text);
}

.ai-prompt-box button {
  background: var(--color-clay);
  color: #fff;
  border: none;
  padding: 10px 20px;
  font-size: 12px;
  font-family: var(--font-main);
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: background var(--transition);
}

.ai-prompt-box button:hover { background: var(--color-accent); }

.ai-result {
  font-size: 13px;
  color: var(--color-muted);
  font-style: italic;
  letter-spacing: 0.06em;
  min-height: 40px;
}

/* ===== MOBILE NAV ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .story-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .imagery-grid { grid-template-columns: repeat(2, 1fr); }
}

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

  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    padding: 12px 0;
  }

  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 24px; }

  .video-grid { grid-template-columns: 1fr 1fr; }
  .creators-grid { grid-template-columns: repeat(3, 1fr); }
  .section { padding: 56px 16px; }
  .hero { height: 70vh; }
  .footer-top { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .imagery-grid { grid-template-columns: 1fr; }
  .creators-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
}

/* ===== LAZY LOAD ===== */
img[loading="lazy"] { opacity: 0; transition: opacity 0.5s ease; }
img.loaded { opacity: 1; }

/* ===== WABI TEXTURE ===== */
.wabi-texture {
  position: relative;
}

.wabi-texture::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}