@charset "UTF-8";

/* ═══════════════════════════════════════
   林运焘 · 能量书法 — NGA博物馆风格
   ═══════════════════════════════════════ */

:root {
  --bg: #ffffff;
  --bg-warm: #f7f7f5;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --text-light: #888888;
  --accent: #1a1a1a;
  --accent-hover: #444444;
  --border: #e5e5e5;
  --border-dark: #1a1a1a;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  --font-sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  opacity: 0;
  animation: pageLoad 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.1s forwards;
}

@keyframes pageLoad {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

::selection {
  background: var(--text);
  color: var(--bg);
}

/* ─── Scroll Animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ─── Image Load Fade ─── */
img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

img.loaded,
img[loading="lazy"] {
  opacity: 1;
}

/* ─── Navigation ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.5rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.nav.scrolled {
  padding: 1rem 4rem;
  background: rgba(255,255,255,0.95);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  transition: var(--transition-fast);
}

.nav-brand:hover {
  opacity: 0.7;
}

.nav-brand span {
  font-weight: 300;
  color: var(--text-light);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: var(--transition-fast);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav-links a:hover {
  color: var(--text);
}

.nav-links a.active {
  color: var(--text);
}

.nav-douyin {
  color: var(--text) !important;
  font-weight: 500;
}

.nav-mobile-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ─── Hero ─── */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 8rem 4rem 5rem;
  max-width: 1400px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  width: 100%;
  align-items: center;
}

.hero-text {
  padding-right: 2rem;
}

.hero-kicker {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
  font-weight: 300;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-quote {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text);
  font-style: italic;
  margin-bottom: 3rem;
  padding-left: 1.5rem;
  border-left: 3px solid var(--text);
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-visual {
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-visual img {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: var(--transition-slow);
}

.hero-visual img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border: 1px solid var(--text);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn:hover {
  background: var(--bg);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--text);
}

.btn-outline:hover {
  background: var(--text);
  color: var(--bg);
}

/* ─── Section通用 ─── */
.section {
  padding: 5rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-warm {
  background: var(--bg-warm);
}

.section-head {
  margin-bottom: 3rem;
}

.section-kicker {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 1rem;
}

.section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 400;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  font-weight: 300;
}

/* ─── 作品网格 ─── */
.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.work-item {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition);
}

.work-item img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), filter 0.4s ease;
  display: block;
}

.work-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.work-item:hover img {
  transform: scale(1.05);
}

.work-info {
  padding: 1rem 0 0;
  transition: var(--transition);
}

.work-item:hover .work-info h3 {
  color: var(--accent-hover);
}

.work-info h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 0.2rem;
  transition: color 0.3s ease;
}

.work-info span {
  font-size: 0.75rem;
  color: var(--text-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ─── About ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-image {
  overflow: hidden;
  transition: var(--transition);
}

.about-image:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.about-image img {
  width: 100%;
  transition: transform 0.6s ease;
}

.about-image:hover img {
  transform: scale(1.03);
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.9;
  font-weight: 300;
}

.about-text .highlight {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text);
  font-style: italic;
  margin: 2rem 0;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: block;
  transition: var(--transition);
}

.about-text .highlight:hover {
  padding-left: 1rem;
  border-left: 3px solid var(--text);
}

/* ─── Stats ─── */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat-item {
  padding: 1rem;
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
}

.stat-item h3 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.stat-item:hover h3 {
  color: var(--accent-hover);
}

.stat-item p {
  font-size: 0.7rem;
  color: var(--text-light);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ─── Contact ─── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.contact-item {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  transition: var(--transition);
}

.contact-item:hover {
  transform: translateY(-4px);
  padding-left: 0.5rem;
}

.contact-item h4 {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.8rem;
  transition: color 0.3s ease;
}

.contact-item:hover h4 {
  color: var(--text);
}

.contact-item p {
  font-size: 1rem;
  color: var(--text);
}

.contact-item a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: var(--transition-fast);
}

.contact-item a:hover {
  border-bottom-color: var(--text);
}

/* ─── 价格 ─── */
.price-list {
  max-width: 900px;
  margin: 0 auto;
}

.price-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  cursor: default;
}

.price-item:first-child {
  border-top: 1px solid var(--border);
}

.price-item:hover {
  padding-left: 1rem;
  background: rgba(0,0,0,0.01);
}

.price-item:hover h3 {
  color: var(--text);
}

.price-item h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  transition: color 0.3s ease;
}

.price-item p {
  font-size: 0.85rem;
  color: var(--text-light);
}

.price-item .price {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  white-space: nowrap;
  transition: var(--transition);
}

.price-item:hover .price {
  transform: scale(1.05);
}

/* ─── Footer ─── */
.footer {
  padding: 3rem 4rem;
  border-top: 1px solid var(--border);
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  color: var(--text-light);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: var(--transition-fast);
  position: relative;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width 0.3s ease;
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-links a:hover {
  color: var(--text);
}

/* ─── Page Header ─── */
.page-header {
  padding: 10rem 4rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 400;
  margin-bottom: 1rem;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  font-weight: 300;
  animation: fadeInUp 0.8s ease 0.2s both;
}

/* ─── Timeline ─── */
.timeline {
  max-width: 800px;
  margin: 0 auto;
}

.timeline-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.timeline-item:hover {
  padding-left: 0.5rem;
}

.timeline-item .year {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  transition: color 0.3s ease;
}

.timeline-item:hover .year {
  color: var(--text);
}

.timeline-item h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.timeline-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 300;
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .hero-grid,
  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .hero-visual img {
    max-width: 400px;
    margin: 0 auto;
    display: block;
  }
  
  .works-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 1rem 1.5rem;
  }
  
  .nav.scrolled {
    padding: 0.8rem 1.5rem;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-mobile-btn {
    display: block;
  }
  
  .hero {
    padding: 6rem 1.5rem 3rem;
    min-height: auto;
  }
  
  .section {
    padding: 3rem 1.5rem;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .stats {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  
  .stat-item h3 {
    font-size: 1.6rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  
  .page-header {
    padding: 6rem 1.5rem 3rem;
  }
  
  .price-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .works-grid {
    grid-template-columns: 1fr;
  }
}