/* ============================================================
   Write Edge Hong Kong — production styles
   Tokens and component rules per brand.md
   ============================================================ */
:root {
  --color-primary:     #1A1F90;
  --color-primary-700: #13166A;
  --color-primary-100: #E8E9F5;
  --color-accent:      #E0A82E;
  --color-accent-300:  #F3D58A;
  --color-accent-700:  #C8932A;
  --color-ink:         #14202B;
  --color-slate:       #5C6B7A;
  --color-border:      #E2E5EC;
  --color-surface:     #FFFFFF;
  --color-surface-alt: #F5F7FB;
  --color-success:     #2E7D5B;
  --color-error:       #B33A2E;
  --color-whatsapp:    #25D366;

  --font-body: "Poppins", "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-tc:   "Noto Sans TC", "Poppins", sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(26, 31, 144, 0.05), 0 4px 12px rgba(26, 31, 144, 0.07);
  --shadow-md: 0 4px 8px rgba(26, 31, 144, 0.07), 0 12px 24px rgba(26, 31, 144, 0.11);
  --shadow-lg: 0 8px 24px rgba(26, 31, 144, 0.22);

  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
  --content-max: 1100px;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

:lang(zh-Hant) { font-family: var(--font-tc); }

img { max-width: 100%; }
h1, h2, h3, h4 { margin: 0; }
a { color: var(--color-primary-700); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* Focus ring — brand spec: 3px gold, 2px offset */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============================================================
   Logo lockup
   ============================================================ */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.logo img { display: block; height: 45px; width: auto; }
.logo .suffix {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.22em;
  color: var(--color-primary);
  border-left: 1.5px solid var(--color-border);
  padding-left: 12px;
  line-height: 1;
}
.logo.reverse img { filter: brightness(0) invert(1); }
.logo.reverse .suffix { color: #fff; border-color: rgba(255,255,255,0.35); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  line-height: 1;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 150ms var(--ease), color 150ms var(--ease),
              box-shadow 150ms var(--ease), transform 150ms var(--ease);
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-700); box-shadow: var(--shadow-sm); }
.btn--secondary { background: #fff; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.btn--secondary:hover { background: var(--color-surface-alt); }
.btn--accent { background: var(--color-accent); color: var(--color-primary); }
.btn--accent:hover {
  background: var(--color-accent-700);
  color: #fff;
  box-shadow: 0 6px 14px rgba(224, 168, 46, 0.4);
  transform: translateY(-1px);
}
.btn--sm { height: 36px; padding: 0 16px; font-size: 14px; border-radius: 8px; }
.btn--lg { height: 56px; padding: 0 32px; font-size: 18px; }

/* ============================================================
   Header / nav (sticky)
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 150ms var(--ease);
}
.site-header.is-scrolled { box-shadow: 0 2px 8px rgba(26, 31, 144, 0.07); }
.nav-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 28px;
}
.nav-inner > .logo { flex: none; }
.nav-links ul {
  display: flex;
  flex-wrap: nowrap;
  gap: clamp(14px, 1.5vw, 22px);
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-links a {
  color: var(--color-ink);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  white-space: nowrap;
}
.nav-links a:hover { color: var(--color-primary); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 150ms var(--ease);
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--color-primary); }

.nav-cta { display: flex; align-items: center; gap: 12px; }
.lang-toggle {
  display: inline-flex;
  padding: 4px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-slate);
}
.lang-toggle button {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font: inherit;
  color: inherit;
  min-height: 28px;
}
.lang-toggle button.is-active { background: var(--color-primary); color: #fff; }

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-ink);
  cursor: pointer;
}

.mobile-menu {
  background: var(--color-primary);
  border-top: 1px solid rgba(255,255,255,0.12);
}
.mobile-menu ul { list-style: none; margin: 0; padding: 8px 0; }
.mobile-menu a {
  display: block;
  padding: 14px 32px;
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
}
.mobile-menu a:hover { background: rgba(255,255,255,0.08); }

/* ============================================================
   Announcement banner
   ============================================================ */
.announce-bar {
  background: var(--color-primary);
  color: #fff;
}
.announce-bar + .announce-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.announce-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 28px;
  flex-wrap: wrap;
}
.announce-icon {
  display: inline-flex;
  flex: none;
  color: var(--color-accent-300);
}
.announce-tag {
  flex: none;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--color-accent);
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.announce-text {
  flex: 1 1 240px;
  font-size: 14px;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.92);
}
.announce-cta {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent-300);
  text-decoration: none;
  white-space: nowrap;
  padding: 8px 2px;
  min-height: 28px;
}
.announce-cta:hover { color: #fff; }
.announce-cta svg { flex: none; }

@media (max-width: 640px) {
  .announce-inner { gap: 10px; padding: 12px 20px; }
  .announce-text { flex-basis: 100%; order: 3; font-size: 13px; }
  .announce-cta { order: 4; flex-basis: 100%; justify-content: flex-start; }
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  padding: 80px 32px 96px;
  background: linear-gradient(180deg, var(--color-surface-alt) 0%, #fff 100%);
}
.hero-inner { max-width: var(--content-max); margin: 0 auto; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(224, 168, 46, 0.14);
  color: var(--color-accent-700);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}
.hero-eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  max-width: 18ch;
  color: var(--color-primary);
}
.hero-zh {
  font-family: var(--font-tc);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-slate);
  margin: 0 0 20px;
}
.hero .lede {
  font-size: 19px;
  color: var(--color-ink);
  line-height: 1.55;
  max-width: 56ch;
  margin: 0 0 36px;
}
.hero-ctas { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.hero-meta {
  margin-top: 28px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--color-slate);
}
.hero-meta strong { color: var(--color-primary); font-weight: 600; }
.hero-meta-item { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta-item svg { color: var(--color-primary); width: 16px; height: 16px; flex: none; }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 96px 32px; }
.section--alt { background: var(--color-surface-alt); }
.section-inner { max-width: var(--content-max); margin: 0 auto; }
.section h2 {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 20px;
}
.section-intro {
  font-size: 18px;
  color: var(--color-slate);
  max-width: 60ch;
  margin: 0 0 56px;
  line-height: 1.55;
}
.section-intro--tight { margin-bottom: 0; }
.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-accent-700);
  margin-bottom: 12px;
}
.asset-note {
  margin: 32px 0 0;
  padding: 14px 20px;
  border: 1.5px dashed #C9D0DB;
  border-radius: 8px;
  background: #fff;
  display: inline-flex;
  gap: 12px;
  align-items: center;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  color: var(--color-slate);
  line-height: 1.5;
}
.section--alt .asset-note { background: var(--color-surface); }

/* Why grid */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.why-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.icon-tile {
  width: 56px; height: 56px;
  background: var(--color-primary-100);
  color: var(--color-primary);
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.why-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.why-card p { font-size: 16px; color: var(--color-ink); line-height: 1.55; margin: 0; }

/* ============================================================
   Course cards
   ============================================================ */
.course-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.course-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow 200ms var(--ease), transform 200ms var(--ease);
}
.course-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.course-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--color-accent);
}
.course-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  background: rgba(224, 168, 46, 0.14);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}
.course-card h3 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}
.course-card .ages { color: var(--color-slate); font-size: 15px; margin: 0 0 24px; }
.course-card .desc { font-size: 16px; line-height: 1.55; color: var(--color-ink); margin: 0 0 24px; }
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--color-ink);
}
.feature-list svg { flex: none; color: var(--color-success); margin-top: 3px; }
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  gap: 16px;
}
.price {
  font-weight: 700;
  font-size: 26px;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}
.price small {
  font-weight: 500;
  color: var(--color-slate);
  font-size: 13px;
  margin-left: 6px;
}

/* ============================================================
   Schedule & fees table
   ============================================================ */
.fees-table-wrap {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.fees-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.fees-table thead th {
  background: var(--color-surface-alt);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: left;
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-border);
}
.fees-table thead th.fee { text-align: right; }
.fees-table tbody td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink);
  font-size: 15px;
}
.fees-table tbody tr:last-child td { border-bottom: 0; }
.fees-table .fee {
  font-weight: 600;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.level-pill {
  display: inline-block;
  background: var(--color-primary-100);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.level-pill.secondary { background: rgba(224, 168, 46, 0.18); color: var(--color-accent-700); }
.fees-note {
  margin-top: 24px;
  padding: 20px 24px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: var(--color-ink);
  font-size: 14px;
  line-height: 1.55;
}
.section--alt .fees-note { background: #fff; }
.fees-note svg { color: var(--color-accent-700); flex: none; margin-top: 2px; }

/* ============================================================
   Image placeholders
   ============================================================ */
.photo-ph, .avatar-ph {
  position: relative;
  background-color: #EEF1F7;
  background-image:
    repeating-linear-gradient(135deg, rgba(26,31,144,0.055) 0 1px, transparent 1px 14px),
    radial-gradient(circle at 30% 30%, rgba(255,255,255,0.55), transparent 60%);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.photo-ph {
  border-radius: var(--radius-md);
  display: flex;
  align-items: flex-end;
  padding: 10px;
}
.photo-ph::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='32' height='32' viewBox='0 0 24 24' fill='none' stroke='%231A1F90' stroke-opacity='0.22' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'><rect x='3' y='3' width='18' height='18' rx='2'/><circle cx='9' cy='9' r='2'/><path d='m21 15-3.1-3.1a2 2 0 0 0-2.8 0L6 21'/></svg>") center / 32px no-repeat;
}
.photo-ph .ph-label {
  position: relative;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--color-slate);
  background: rgba(255,255,255,0.92);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  line-height: 1;
}
.avatar-ph { border-radius: var(--radius-pill); flex: none; }
.avatar-ph::before {
  content: "";
  position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231A1F90' stroke-opacity='0.28' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'><circle cx='12' cy='8' r='4'/><path d='M4 21v-1a6 6 0 0 1 6-6h4a6 6 0 0 1 6 6v1'/></svg>") center / 55% no-repeat;
}

/* Teachers */
.teacher-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.teacher-card { text-align: center; }
.teacher-card .avatar-ph { width: 140px; height: 140px; margin: 0 auto 20px; }
.teacher-card h3 { font-size: 20px; font-weight: 700; margin: 0 0 4px; letter-spacing: -0.01em; }
.teacher-card .role {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-700);
  margin-bottom: 12px;
}
.teacher-card .bio { font-size: 15px; color: var(--color-ink); line-height: 1.55; max-width: 32ch; margin: 0 auto; }

/* Gallery */
.gallery-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
  gap: 32px;
}
.gallery-head h2 { margin: 0 0 12px; }
.gallery-head-cta { flex: none; }
.gallery-mosaic {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 220px 220px;
  gap: 16px;
}
.gallery-mosaic .photo-ph:nth-child(1) { grid-column: span 2; grid-row: span 2; }

/* Testimonials */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testi-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.testi-card .quote-mark {
  font-size: 56px;
  line-height: 0.6;
  color: var(--color-accent);
  font-family: Georgia, serif;
  margin: 0 0 12px;
  display: block;
  height: 28px;
}
.testi-card .quote { font-size: 16px; line-height: 1.55; color: var(--color-ink); margin: 0 0 24px; }
.testi-card .testi-by {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}
.testi-card .testi-by .avatar-ph { width: 44px; height: 44px; }
.testi-card .who-name { font-size: 14px; font-weight: 600; color: var(--color-ink); }
.testi-card .who-meta { font-size: 12px; color: var(--color-slate); margin-top: 2px; }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--color-primary);
  color: #fff;
  padding: 64px 32px 32px;
}
.footer-inner { max-width: var(--content-max); margin: 0 auto; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.18);
}
.footer h4 {
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 16px;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 15px; }
.footer ul a:hover { color: #fff; }
.footer .blurb { color: rgba(255,255,255,0.75); font-size: 14px; line-height: 1.55; margin: 16px 0 24px; max-width: 32ch; }
.footer .social { display: flex; gap: 12px; }
.footer .social a {
  width: 40px; height: 40px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: rgba(255,255,255,0.1);
  color: #fff;
  text-decoration: none;
  transition: background-color 150ms var(--ease);
}
.footer .social a:hover { background: rgba(255,255,255,0.2); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  letter-spacing: 0.04em;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   Floating WhatsApp (all screens)
   ============================================================ */
@keyframes wa-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.55); }
  70%  { box-shadow: 0 0 0 14px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

.float-wa {
  display: grid;
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-pill);
  background: var(--color-whatsapp);
  color: #fff;
  place-items: center;
  box-shadow: 1px 6px 24px 0 rgba(7, 94, 84, 0.28);
  z-index: 30;
  text-decoration: none;
  animation: wa-pulse 2.4s ease-out infinite;
  transition: transform 150ms var(--ease), background-color 150ms var(--ease);
}
.float-wa:hover {
  background: #128c7e;
  transform: scale(1.08);
  animation: none;
}
.float-wa:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* Tooltip label */
.float-wa::before {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: #fff;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms var(--ease);
}
.float-wa::after {
  content: "";
  position: absolute;
  right: calc(100% + 4px);
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms var(--ease);
}
.float-wa:hover::before,
.float-wa:hover::after { opacity: 1; }

/* ============================================================
   Responsive
   ============================================================ */
/* Collapse the desktop nav to a hamburger before links get cramped */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: grid; }
}

@media (max-width: 980px) {
  .why-grid, .teacher-grid, .testi-grid { grid-template-columns: 1fr 1fr; }
  .gallery-mosaic { grid-template-columns: repeat(2, 1fr); grid-template-rows: repeat(3, 200px); }
  .gallery-mosaic .photo-ph:nth-child(1) { grid-column: span 2; grid-row: span 1; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .hero h1 { font-size: 44px; }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 76px; }
  .nav-inner { height: 64px; padding: 0 20px; }
  .nav-links { display: none; }
  .hamburger { display: grid; }
  .nav-cta .btn { display: none; }
  .nav-cta { gap: 12px; }

  .hero { padding: 40px 20px 56px; }
  .hero h1 { font-size: 34px; }
  .hero-zh { font-size: 17px; }
  .hero .lede { font-size: 16px; margin-bottom: 28px; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
  .hero-meta { gap: 14px; flex-direction: column; }

  .section { padding: 56px 20px; }
  .section h2 { font-size: 28px; }
  .section-intro { font-size: 16px; margin-bottom: 32px; }

  .fees-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius-lg); }
  .fees-table { min-width: 480px; }
  .fees-table thead th, .fees-table tbody td { padding: 14px 16px; }

  .why-grid, .course-grid, .teacher-grid, .testi-grid { grid-template-columns: 1fr; gap: 16px; }
  .course-card { padding: 24px; }
  .gallery-head { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 28px; }
  .gallery-mosaic { grid-template-columns: 1fr 1fr; grid-template-rows: auto; gap: 8px; }
  .gallery-mosaic .photo-ph { aspect-ratio: 1; }
  .gallery-mosaic .photo-ph:nth-child(1) { grid-column: span 2; aspect-ratio: 2.2 / 1; }

  .footer { padding: 40px 20px 28px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }

}


/* ============================================================
   CMS-driven additions: real media, compositions, detail pages
   ============================================================ */

/* Empty states */
.empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  padding: 40px 28px;
  text-align: center;
  color: var(--color-slate);
}
.empty-state p { margin: 0; }

/* Real uploaded photos (teachers / testimonials) */
.avatar-img {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-pill);
  object-fit: cover;
  display: block;
  margin: 0 auto 20px;
  border: 1px solid var(--color-border);
}
.testi-card .testi-by .avatar-img,
.avatar-img.sm {
  width: 44px;
  height: 44px;
  margin: 0;
}

/* Gallery with real images */
.gallery-mosaic .gallery-photo {
  margin: 0;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.gallery-mosaic .gallery-photo:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery-mosaic .gallery-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.gallery-mosaic .gallery-photo figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-size: 14px;
  color: #fff;
  background: linear-gradient(to top, rgba(20, 32, 43, 0.78), rgba(20, 32, 43, 0));
}

/* Model compositions */
.comp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.comp-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.comp-level {
  display: inline-block;
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary-700);
  background: var(--color-primary-100);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.comp-card h3 { margin: 0 0 10px; color: var(--color-primary); font-size: 21px; }
.comp-excerpt { color: var(--color-slate); margin: 0 0 20px; flex: 1; }
.comp-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* Detail / reader pages */
.section-inner--narrow { max-width: 760px; }
.back-link {
  display: inline-block;
  margin-bottom: 20px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  color: var(--color-primary-700);
}
.back-link:hover { text-decoration: underline; }
.detail-hero h1 { color: var(--color-primary); margin: 14px 0 8px; }
.detail-hero .ages { color: var(--color-slate); font-weight: 600; margin: 0 0 20px; }
.price--lg { font-size: 22px; font-weight: 700; color: var(--color-primary); display: inline-flex; align-items: baseline; }
.price--lg small { font-size: 14px; font-weight: 500; color: var(--color-slate); margin-left: 4px; }
.detail-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.detail-block h2 { color: var(--color-primary); font-size: 22px; margin: 0 0 14px; }
.topic-list { margin: 0; padding-left: 20px; }
.topic-list li { margin-bottom: 10px; }
.composition-body {
  white-space: pre-line;
  font-size: 18px;
  line-height: 1.85;
  color: var(--color-ink);
  margin-top: 24px;
}

@media (max-width: 880px) {
  .comp-grid { grid-template-columns: 1fr; }
  .detail-cols { grid-template-columns: 1fr; gap: 28px; }
  .gallery-mosaic .gallery-photo:nth-child(1) { grid-column: span 2; grid-row: span 1; }
}

/* ============================================================
   Hero full-bleed image carousel (background behind the hero)
   ============================================================ */
.hero--bg {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  aspect-ratio: 2239 / 800;
  min-height: 420px;
  padding-top: 48px;
  padding-bottom: 48px;
  background: var(--color-primary); /* shown until first image paints */
}
/* rotating image layer */
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero--bg .hc-viewport { position: absolute; inset: 0; }
.hero--bg .hc-slide {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity 800ms var(--ease);
}
.hero--bg .hc-slide.is-active { opacity: 1; }
.hero--bg .hc-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
/* copy sits above the image (scrim removed per request) */
.hero--bg .hero-inner { position: relative; z-index: 2; width: 100%; }
.hero--bg h1 { color: var(--color-primary); }
.hero--bg .hero-zh { color: var(--color-slate); }
.hero--bg .lede { color: var(--color-ink); }
.hero--bg .hero-meta { color: var(--color-slate); }
.hero--bg .hero-meta strong { color: var(--color-primary); }
.hero--bg .hero-meta-item svg { color: var(--color-primary); }
.hero--bg .btn--secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.hero--bg .btn--secondary:hover { background: var(--color-surface-alt); }
/* dot indicators */
.hero--bg .hc-dots {
  position: absolute;
  right: 32px;
  bottom: 28px;
  z-index: 3;
  display: flex;
  justify-content: center;
  gap: 4px;
  margin: 0;
}
.hc-dot {
  width: 30px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.hc-dot::after {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.5);
  transition: width 200ms var(--ease), background 200ms var(--ease);
}
.hc-dot.is-active::after { width: 26px; background: var(--color-accent); }

@media (max-width: 760px) {
  .hero--bg {
    aspect-ratio: unset;
    min-height: unset;
    padding: 48px 20px 64px;
    align-items: flex-start;
  }
  .hero--bg .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero--bg .hero-ctas .btn { width: 100%; }
  .hero--bg .hero-meta { flex-direction: column; gap: 10px; }
  .hero--bg .hc-dots { bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .course-card,
  .nav-links a::after,
  .btn { transition: none; }
  .course-card:hover { transform: none; }
  .btn--accent:hover { transform: none; }
  .hc-slide { transition: none; }
}