:root {
  --paper-bg: #faf6ef;
  --paper-surface: #fffdf9;
  --paper-muted: #f5efe4;
  --ink: #2c1810;
  --ink-muted: #5c4a3a;
  --ink-light: #8a7560;
  --brand-brown: #5c4033;
  --brand-brown-dark: #4a3228;
  --brand-red: #8b2500;
  --brand-gold: #c4a574;
  --brand-gold-light: #e8dcc8;
  --border: #d4c4a8;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-card: 0 2px 16px rgba(92, 64, 51, 0.1);
  --font-body: 'DFKai-SB', 'BiauKai', '標楷體', 'KaiTi', '楷体', serif;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    linear-gradient(rgba(250, 246, 239, 0.94), rgba(250, 246, 239, 0.94)),
    radial-gradient(circle at 20% 10%, rgba(196, 165, 116, 0.15), transparent 45%),
    radial-gradient(circle at 80% 90%, rgba(139, 37, 0, 0.06), transparent 40%),
    var(--paper-bg);
  line-height: 1.65;
}

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

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

.container {
  width: min(100% - 32px, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 253, 249, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--brand-gold-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-text {
  min-width: 0;
}

.site-logo {
  flex-shrink: 0;
  display: block;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  opacity: 0;
  animation: logoFadeIn 1.2s ease forwards;
  transition: transform 0.25s ease, filter 0.25s ease;
}

.site-logo--header {
  width: 56px;
  height: 56px;
}

.site-logo--hero {
  width: min(40vw, 200px);
  height: min(40vw, 200px);
  margin: 0 auto 20px;
}

.site-logo:hover {
  transform: translateY(-2px);
  filter: brightness(1.04);
}

@keyframes logoFadeIn {
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-logo {
    animation: logoFadeIn 0.4s ease forwards;
  }

  .site-logo:hover {
    transform: none;
  }
}

.brand-name {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--brand-red);
  letter-spacing: 0.18em;
}

.brand-tag {
  display: block;
  margin-top: 2px;
  font-size: 0.85rem;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.98rem;
  padding: 6px 2px;
}

.site-nav a:hover {
  color: var(--brand-red);
}

.nav-cta {
  padding: 8px 14px !important;
  border-radius: 6px;
  background: var(--brand-brown);
  color: #fff !important;
}

.nav-cta:hover {
  background: var(--brand-brown-dark);
  color: #fff !important;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--paper-surface);
  border-radius: 6px;
  padding: 8px 12px;
  font-family: inherit;
  cursor: pointer;
}

.hero {
  padding: 56px 0 48px;
  text-align: center;
}

.hero-kicker {
  margin: 0 0 12px;
  color: var(--brand-brown);
  letter-spacing: 0.2em;
  font-size: 0.95rem;
}

.hero-title {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--brand-red);
  letter-spacing: 0.12em;
  line-height: 1.35;
}

.hero-lead {
  margin: 0 auto 28px;
  max-width: 42em;
  font-size: 1.08rem;
  color: var(--ink-muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--brand-brown);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-brown-dark);
}

.btn-secondary {
  background: var(--paper-surface);
  color: var(--brand-brown);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--brand-gold);
}

.section {
  padding: 48px 0;
}

.section-alt {
  background: rgba(255, 253, 249, 0.72);
  border-block: 1px solid var(--brand-gold-light);
}

.section-head {
  text-align: center;
  margin-bottom: 32px;
}

.section-head h2 {
  margin: 0 0 8px;
  font-size: 1.75rem;
  color: var(--brand-brown);
  letter-spacing: 0.14em;
}

.section-head p {
  margin: 0;
  color: var(--ink-light);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
  align-items: start;
}

.card {
  background: var(--paper-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
}

.teacher-photo {
  margin: 0;
  aspect-ratio: 1 / 1;
  max-width: 360px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  background: var(--paper-muted);
}

.teacher-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

.teacher-name {
  margin: 0 0 6px;
  font-size: 1.5rem;
  color: var(--brand-red);
}

.teacher-title {
  margin: 0 0 16px;
  color: var(--ink-muted);
}

.prose p {
  margin: 0 0 1em;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.service-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 100%;
}

.service-icon {
  font-size: 1.5rem;
  color: var(--brand-brown);
}

.service-card h3 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--brand-brown);
}

.service-card p {
  margin: 0;
  flex: 1;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.service-card .btn {
  align-self: flex-start;
  margin-top: 4px;
  padding: 8px 14px;
  font-size: 0.92rem;
}

.service-card .btn.is-disabled,
.btn.is-disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.contact-item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--paper-surface);
}

.contact-item strong {
  display: block;
  margin-bottom: 6px;
  color: var(--brand-brown);
}

.contact-item span,
.contact-item a {
  color: var(--ink-muted);
  word-break: break-all;
}

.video-block {
  margin-bottom: 36px;
}

.video-block:last-child {
  margin-bottom: 0;
}

.video-block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.video-block-head h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--brand-brown);
  letter-spacing: 0.08em;
}

.video-block-head a {
  font-size: 0.95rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.video-item {
  margin: 0;
}

.video-embed {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
  box-shadow: var(--shadow-card);
}

.video-embed iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  margin: 10px 4px 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.video-empty {
  margin: 0;
  padding: 18px 16px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
  background: rgba(255, 253, 249, 0.8);
  color: var(--ink-muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.tiktok-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  justify-items: center;
}

.tiktok-item {
  width: min(100%, 605px);
}

.tiktok-embed-wrap {
  width: 100%;
  min-height: 740px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
  box-shadow: var(--shadow-card);
}

.tiktok-embed-frame {
  display: block;
  width: 100%;
  height: 740px;
  border: 0;
}

.placeholder-note {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(232, 220, 200, 0.45);
  border: 1px dashed var(--brand-gold);
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 28px 0 36px;
  text-align: center;
  color: var(--ink-light);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--brand-brown);
}

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

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 16px;
    background: rgba(255, 253, 249, 0.98);
    border-bottom: 1px solid var(--brand-gold-light);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-header .container {
    position: relative;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 36px;
  }
}