/* ============================================================
   SILK 思綺美睫工作室 — styles.css
   Mobile-first, BEM-like, pure CSS, no frameworks
   ============================================================ */

/* ── 1. CSS Custom Properties ── */
:root {
  /* Colors */
  --color-bg: #FAF7F2;
  --color-bg-warm: #F5F0E8;
  --color-surface: #FFFFFF;
  --color-surface-soft: #FDF9F5;
  --color-gold: #C9A880;
  --color-gold-light: #E8D5B7;
  --color-gold-dark: #A8845A;
  --color-rose: #E8D0CB;
  --color-rose-dark: #C4A49B;
  --color-text: #2C2926;
  --color-text-mid: #5A524E;
  --color-text-muted: #7A7170;
  --color-text-light: #A89E9B;
  --color-border: #E8E2D8;
  --color-border-light: #F0EBE3;

  /* Typography */
  --font-serif: 'Cormorant Garamond', 'Noto Serif TC', Georgia, serif;
  --font-sans: 'Inter', 'Noto Sans TC', sans-serif;

  /* Spacing scale */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 5rem;
  --space-3xl: 7.5rem;

  /* Section padding */
  --section-py: 5rem;
  --section-py-lg: 7.5rem;

  /* Borders */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 4px rgba(44, 41, 38, 0.06);
  --shadow-md: 0 4px 20px rgba(44, 41, 38, 0.08);
  --shadow-lg: 0 12px 40px rgba(44, 41, 38, 0.12);
  --shadow-card: 0 2px 16px rgba(44, 41, 38, 0.07);
  --shadow-card-hover: 0 10px 40px rgba(44, 41, 38, 0.14);
  --shadow-gold: 0 4px 20px rgba(201, 168, 128, 0.30);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-base: 0.28s ease;
  --transition-slow: 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Nav */
  --nav-height: 72px;

  /* Container */
  --container-max: 1200px;
  --container-px: 1.5rem;
}

/* ── 2. Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

address { font-style: normal; }

/* ── 3. Utility: Container ── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

/* ── 4. Utility: Scroll Animations ── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94) calc(var(--stagger, 0) * 0.12s),
    transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94) calc(var(--stagger, 0) * 0.12s);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── 5. Section Header ── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin-bottom: var(--space-sm);
}

.eyebrow--light {
  color: rgba(232, 213, 183, 0.85);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.25;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.01em;
}

.section-title--light {
  color: var(--color-surface);
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.8;
}

/* ── 6. Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: var(--radius-full);
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--gold {
  background-color: var(--color-gold);
  color: var(--color-surface);
  border: 1.5px solid var(--color-gold);
}
.btn--gold:hover {
  background-color: var(--color-gold-dark);
  border-color: var(--color-gold-dark);
  box-shadow: var(--shadow-gold);
}

.btn--outline-gold {
  background-color: transparent;
  color: var(--color-gold-dark);
  border: 1.5px solid var(--color-gold);
}
.btn--outline-gold:hover {
  background-color: var(--color-gold);
  color: var(--color-surface);
  box-shadow: var(--shadow-gold);
}

.btn--outline-light {
  background-color: transparent;
  color: rgba(255, 255, 255, 0.92);
  border: 1.5px solid rgba(255, 255, 255, 0.55);
}
.btn--outline-light:hover {
  background-color: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.85);
  color: #fff;
}

.btn--lg {
  padding: 0.95rem 2.25rem;
  font-size: 0.95rem;
}

.btn--full {
  width: 100%;
}

/* ── 7. Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    backdrop-filter var(--transition-base);
}

.nav.scrolled {
  background-color: rgba(250, 247, 242, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__logo {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-silk {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.04em;
  line-height: 1;
  transition: color var(--transition-fast);
}

.nav__logo-zh {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
}

.nav.scrolled .nav__logo-silk { color: var(--color-text); }
.nav:not(.scrolled) .nav__logo-silk { color: rgba(255,255,255,0.95); }
.nav:not(.scrolled) .nav__logo-zh { color: rgba(255,255,255,0.65); }

.nav__menu {
  flex: 1;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  justify-content: center;
}

.nav__link {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.nav:not(.scrolled) .nav__link {
  color: rgba(255,255,255,0.82);
}
.nav:not(.scrolled) .nav__link:hover {
  color: #fff;
  background-color: rgba(255,255,255,0.12);
}

.nav.scrolled .nav__link {
  color: var(--color-text-mid);
}
.nav.scrolled .nav__link:hover {
  color: var(--color-text);
  background-color: var(--color-bg-warm);
}

.nav__cta {
  flex-shrink: 0;
  padding: 0.55rem 1.4rem;
  font-size: 0.82rem;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
  margin-left: auto;
  flex-shrink: 0;
}

.nav__hamburger-line {
  display: block;
  height: 1.5px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.nav:not(.scrolled) .nav__hamburger { color: rgba(255,255,255,0.9); }
.nav.scrolled .nav__hamburger { color: var(--color-text); }

.nav__hamburger.is-open .nav__hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger.is-open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.is-open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 900px) {
  .nav__menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: rgba(250, 247, 242, 0.98);
    backdrop-filter: blur(16px);
    padding: var(--space-md) var(--container-px) var(--space-lg);
    border-top: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition:
      transform var(--transition-base),
      opacity var(--transition-base);
  }

  .nav__menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }

  .nav__link {
    color: var(--color-text-mid) !important;
    padding: 0.7rem 0.5rem;
    width: 100%;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.95rem;
  }

  .nav__link:hover {
    color: var(--color-text) !important;
    background-color: transparent !important;
  }

  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  .nav__container { gap: 0; }
}

/* ── 8. Hero Section ── */
.hero {
  position: relative;
  min-height: 100svh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(20, 16, 12, 0.62) 0%,
    rgba(30, 22, 14, 0.50) 50%,
    rgba(20, 16, 12, 0.65) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: 8rem;
}

.hero__eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.8s 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 400;
  color: #fff;
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
  max-width: 700px;
  opacity: 0;
  animation: fadeUp 0.9s 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__title em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-gold-light);
}

.hero__subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.05rem);
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.04em;
  opacity: 0;
  animation: fadeUp 0.9s 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
  opacity: 0;
  animation: fadeUp 0.9s 0.75s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__trust {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.9s 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__trust-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hero__trust-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: #fff;
  line-height: 1;
}

.hero__trust-label {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.06em;
}

.hero__trust-divider {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.22);
  flex-shrink: 0;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  animation: fadeUp 0.9s 1.1s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
  animation: scrollPulse 2.2s ease-in-out infinite;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.5; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.1); }
}

/* ── 9. Pain Points Section ── */
.pain {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg);
}

.pain__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.pain__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.pain__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-gold-light);
}

.pain__card-icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.pain__card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.6rem;
}

.pain__card-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.pain__cta {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-warm);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.pain__cta-text {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

/* ── 10. Stats Section ── */
.stats {
  background: var(--color-text);
  padding-block: var(--space-2xl);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg) var(--space-xl);
  text-align: center;
}

.stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.stats__num {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 400;
  color: var(--color-gold-light);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stats__label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.08em;
}

/* ── 11. Services Section ── */
.services {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg-warm);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  position: relative;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-gold-light);
}

.service-card--addon {
  background: var(--color-surface-soft);
  border-style: dashed;
}

.service-card--featured {
  background: linear-gradient(135deg, #2C2926 0%, #3D3530 100%);
  border-color: var(--color-gold);
  border-width: 1.5px;
}

.service-card--featured .service-card__name-zh,
.service-card--featured .service-card__name-en,
.service-card--featured .service-card__target,
.service-card--featured .service-card__features li,
.service-card--featured .service-card__time,
.service-card--featured .service-card__cycle {
  color: rgba(255, 255, 255, 0.85);
}

.service-card--featured .service-card__price {
  color: var(--color-gold-light);
}

.service-card__badge {
  position: absolute;
  top: -1px;
  right: var(--space-md);
  background: var(--color-gold);
  color: var(--color-surface);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.85rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.service-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
}

.service-card__names {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.service-card__name-zh {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.2;
}

.service-card__name-en {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
}

.service-card__price {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-gold-dark);
  white-space: nowrap;
  text-align: right;
  flex-shrink: 0;
}

.service-card__price-from {
  font-size: 0.72rem;
  font-family: var(--font-sans);
  font-weight: 400;
  display: block;
  color: var(--color-text-light);
  text-align: right;
}

.service-card--featured .service-card__price-from {
  color: rgba(255,255,255,0.45);
}

.service-card__target {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.service-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: 0.25rem;
  flex: 1;
}

.service-card__features li {
  font-size: 0.825rem;
  color: var(--color-text-mid);
  padding-left: 1rem;
  position: relative;
  line-height: 1.5;
}

.service-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-gold);
}

.service-card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--color-border-light);
}

.service-card--featured .service-card__meta {
  border-color: rgba(255,255,255,0.1);
}

.service-card__time,
.service-card__cycle {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

.service-card__cta {
  margin-top: auto;
  width: 100%;
  text-align: center;
}

/* ── 12. Style Gallery Section ── */
.styles {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg);
}

.styles__tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.styles__tab {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  padding: 0.55rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.styles__tab:hover {
  color: var(--color-text);
  border-color: var(--color-gold-light);
}

.styles__tab--active {
  background: var(--color-gold);
  color: var(--color-surface);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-gold);
}

.styles__panel {
  display: none;
}

.styles__panel--active {
  display: block;
}

.styles__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
}

.style-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.style-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.style-card__img-wrap {
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.style-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.style-card:hover .style-card__img {
  transform: scale(1.05);
}

.style-card__body {
  padding: var(--space-md);
}

.style-card__name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.3rem;
  line-height: 1.3;
}

.style-card__name span {
  display: block;
  font-size: 0.72rem;
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.06em;
  margin-top: 0.1rem;
  font-style: normal;
}

.style-card__desc {
  font-size: 0.8rem;
  color: var(--color-gold-dark);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.style-card__meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.6rem;
  font-size: 0.75rem;
}

.style-card__meta dt {
  color: var(--color-text-light);
  font-weight: 500;
}

.style-card__meta dd {
  color: var(--color-text-mid);
}

.styles__note {
  text-align: center;
  margin-top: var(--space-xl);
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* ── 13. Why Us Section ── */
.why-us {
  padding-block: var(--section-py-lg);
  background-color: var(--color-surface-soft);
}

.why-us__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: flex-start;
}

.why-us__image-col {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
}

.why-us__img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.why-us__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.why-us__img-wrap:hover .why-us__img {
  transform: scale(1.03);
}

.why-us__content-col {
  padding-top: var(--space-sm);
}

.why-us__content-col .section-title {
  text-align: left;
  margin-bottom: var(--space-xl);
}

.why-us__content-col .eyebrow {
  display: block;
}

.why-us__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  counter-reset: none;
}

.why-us__item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}

.why-us__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.why-us__num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 300;
  color: var(--color-gold-light);
  line-height: 1;
  flex-shrink: 0;
  width: 2.8rem;
}

.why-us__item-body {
  flex: 1;
}

.why-us__item-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.why-us__item-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* ── 14. Process Section ── */
.process {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg);
}

.process__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: flex-start;
}

.process__steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.process__step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
  padding-block: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
  position: relative;
}

.process__step:last-child {
  border-bottom: none;
}

.process__step-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  width: 2.5rem;
  text-align: center;
  padding-top: 0.2rem;
}

.process__step-body {
  flex: 1;
}

.process__step-num {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.process__step-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.3rem;
}

.process__step-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.process__image {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

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

/* ── 15. Studio Section ── */
.studio {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg-warm);
}

.studio__layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  align-items: stretch;
}

.studio__main {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.studio__subs {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.studio__sub {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.studio__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.studio__main:hover .studio__img,
.studio__sub:hover .studio__img {
  transform: scale(1.03);
}

.studio__img--main {
  aspect-ratio: 4 / 3;
}

.studio__img--sub {
  aspect-ratio: 16 / 9;
  min-height: 160px;
}

.studio__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
}

.studio__badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.6rem 1.4rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.studio__badge:hover {
  border-color: var(--color-gold-light);
  box-shadow: var(--shadow-sm);
}

.studio__badge-icon {
  font-size: 1rem;
  line-height: 1;
}

.studio__badge-text {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-mid);
  letter-spacing: 0.02em;
}

/* ── 16. Testimonials Section ── */
.testimonials {
  padding-block: var(--section-py-lg);
  background-color: var(--color-surface-soft);
  overflow: hidden;
}

.testimonials__carousel-wrap {
  position: relative;
}

.testimonials__carousel {
  display: flex;
  gap: var(--space-md);
  overflow: hidden;
  cursor: grab;
  user-select: none;
}

.testimonials__carousel.is-dragging {
  cursor: grabbing;
}

.testimonial-card {
  flex: 0 0 calc(33.333% - var(--space-sm));
  min-width: 280px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.testimonial-card.is-active {
  border-color: var(--color-gold-light);
  box-shadow: var(--shadow-card-hover);
}

.testimonial-card__stars {
  color: var(--color-gold);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.testimonial-card__quote {
  font-size: 0.875rem;
  color: var(--color-text-mid);
  line-height: 1.85;
  flex: 1;
  font-style: normal;
  border: none;
  padding: 0;
  margin: 0;
}

.testimonial-card__author {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border-light);
}

.testimonial-card__name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  font-style: normal;
}

.testimonial-card__info {
  font-size: 0.75rem;
  color: var(--color-text-light);
  letter-spacing: 0.03em;
}

.testimonials__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.testimonials__btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.testimonials__btn:hover {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
  color: #fff;
  box-shadow: var(--shadow-gold);
}

.testimonials__dots {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.testimonials__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  cursor: pointer;
  padding: 0;
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast),
    width var(--transition-base);
}

.testimonials__dot--active {
  background: var(--color-gold);
  width: 20px;
  border-radius: var(--radius-full);
}

/* ── 17. Offer Section ── */
.offer {
  position: relative;
  padding-block: var(--space-3xl);
  overflow: hidden;
}

.offer__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.offer__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.offer__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(30, 22, 14, 0.85) 0%,
    rgba(44, 34, 22, 0.80) 60%,
    rgba(30, 22, 14, 0.88) 100%
  );
}

.offer__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.offer__lead {
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.85;
}

.offer__box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(232, 213, 183, 0.22);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  max-width: 780px;
  margin-inline: auto;
  backdrop-filter: blur(8px);
}

.offer__includes {
  text-align: left;
  flex: 1;
  min-width: 240px;
}

.offer__includes-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-gold-light);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.04em;
}

.offer__includes-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.offer__includes-list li {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}

.offer__includes-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.78rem;
}

.offer__price-col {
  text-align: center;
  flex-shrink: 0;
}

.offer__price-block {
  margin-bottom: var(--space-md);
}

.offer__original {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: line-through;
  margin-bottom: 0.3rem;
}

.offer__price {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-gold-light);
  line-height: 1;
}

.offer__note {
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.6;
  max-width: 240px;
  margin-inline: auto;
}

.offer__calendar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm) var(--space-lg);
  max-width: 800px;
  margin-inline: auto;
}

.offer__calendar-item {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.02em;
}

/* ── 18. FAQ Section ── */
.faq {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg);
}

.faq__list {
  max-width: 740px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

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

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none;
  border: none;
}

.faq__question:hover {
  color: var(--color-gold-dark);
}

.faq__question[aria-expanded="true"] {
  color: var(--color-gold-dark);
}

.faq__icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    transform var(--transition-base);
}

.faq__icon::before,
.faq__icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  border-radius: 2px;
}

.faq__icon::before {
  width: 10px;
  height: 1.5px;
}

.faq__icon::after {
  width: 1.5px;
  height: 10px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.faq__question[aria-expanded="true"] .faq__icon::after {
  transform: rotate(90deg);
  opacity: 0;
}

.faq__question[aria-expanded="true"] .faq__icon {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
  color: #fff;
}

.faq__answer {
  overflow: hidden;
}

.faq__answer[hidden] {
  display: none;
}

.faq__answer p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.85;
  padding-bottom: var(--space-md);
}

/* ── 19. Contact Section ── */
.contact {
  padding-block: var(--section-py-lg);
  background-color: var(--color-bg-warm);
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
  align-items: flex-start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact__info-item {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.contact__info-icon {
  font-size: 1.2rem;
  line-height: 1.5;
  flex-shrink: 0;
  width: 2rem;
}

.contact__info-item strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.contact__info-item p {
  font-size: 0.9rem;
  color: var(--color-text-mid);
  line-height: 1.6;
}

.contact__info-item a:hover {
  color: var(--color-gold-dark);
}

.contact__info-note {
  font-size: 0.78rem !important;
  color: var(--color-text-light) !important;
}

.contact__social {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.contact__social-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.contact__social-btn--line:hover {
  border-color: #06C755;
  background: rgba(6, 199, 85, 0.06);
  color: #06C755;
}

.contact__social-btn--ig:hover {
  border-color: #E1306C;
  background: rgba(225, 48, 108, 0.05);
  color: #E1306C;
}

.contact__map {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.contact__map-placeholder {
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--color-bg-warm) 0%, var(--color-bg) 100%);
}

.contact__map-icon {
  font-size: 2rem;
  line-height: 1;
}

.contact__map-placeholder p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* Form */
.contact__form-col {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text-mid);
  letter-spacing: 0.02em;
}

.form-required {
  color: var(--color-gold-dark);
  margin-left: 0.1rem;
}

.form-input {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  width: 100%;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  outline: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--color-text-light);
}

.form-input:focus {
  border-color: var(--color-gold);
  background: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(201, 168, 128, 0.14);
}

.form-input.has-error {
  border-color: #e05a5a;
  background: #fff8f8;
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1L6 7L11 1' stroke='%237A7170' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  font-size: 0.75rem;
  color: #e05a5a;
  min-height: 1em;
  letter-spacing: 0.01em;
}

.form-success {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(201, 168, 128, 0.1);
  border: 1px solid var(--color-gold-light);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}

.form-success[hidden] {
  display: none;
}

.form-success__icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-gold);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
}

.form-success strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.form-success p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ── 20. Footer ── */
.footer {
  background: var(--color-text);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--space-lg);
}

.footer__logo {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  margin-bottom: var(--space-sm);
}

.footer__logo-silk {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-gold-light);
  letter-spacing: 0.04em;
  line-height: 1;
}

.footer__logo-zh {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.06em;
}

.footer__tagline {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
  font-style: italic;
  margin-bottom: var(--space-md);
  font-family: var(--font-serif);
  letter-spacing: 0.04em;
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.footer__social-link:hover {
  border-color: var(--color-gold);
  color: var(--color-gold-light);
  background-color: rgba(201, 168, 128, 0.1);
}

.footer__nav-title {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: var(--space-sm);
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__nav-link {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-gold-light);
}

.footer__address {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__address p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

.footer__address a:hover {
  color: var(--color-gold-light);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer__copy {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.25);
}

.footer__demo {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.2);
}

.footer__demo a {
  color: rgba(255, 255, 255, 0.32);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer__demo a:hover {
  color: rgba(255, 255, 255, 0.55);
}

/* ── 21. Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast),
    opacity var(--transition-base);
  opacity: 0;
}

.back-to-top:not([hidden]) {
  opacity: 1;
}

.back-to-top[hidden] {
  display: flex;
  opacity: 0;
  pointer-events: none;
}

.back-to-top:hover {
  background-color: var(--color-gold);
  color: #fff;
  transform: translateY(-3px);
}

/* ── 22. Responsive: Tablet ── */
@media (min-width: 640px) {
  :root {
    --container-px: 2rem;
  }

  .stats__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .styles__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  :root {
    --section-py: 6rem;
    --section-py-lg: 8rem;
    --container-px: 2.5rem;
  }

  .styles__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .testimonial-card {
    flex: 0 0 calc(50% - var(--space-sm) / 2);
  }
}

@media (min-width: 1024px) {
  :root {
    --section-py: 7.5rem;
    --section-py-lg: 9rem;
  }

  .testimonial-card {
    flex: 0 0 calc(33.333% - var(--space-md) * 2 / 3);
  }
}

/* ── 23. Responsive: Collapse Two-Column ── */
@media (max-width: 900px) {
  .why-us__inner {
    grid-template-columns: 1fr;
  }

  .why-us__image-col {
    position: static;
  }

  .why-us__img-wrap {
    aspect-ratio: 16 / 9;
  }

  .process__grid {
    grid-template-columns: 1fr;
  }

  .process__image {
    position: static;
    aspect-ratio: 16 / 9;
    order: -1;
  }

  .studio__layout {
    grid-template-columns: 1fr;
  }

  .studio__subs {
    flex-direction: row;
  }

  .contact__layout {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  :root {
    --container-px: 1.25rem;
    --section-py: 4rem;
    --section-py-lg: 5.5rem;
    --space-2xl: 3.5rem;
    --space-3xl: 5rem;
  }

  .hero__ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__trust {
    gap: var(--space-md);
  }

  .hero__trust-divider {
    height: 28px;
  }

  .pain__grid {
    grid-template-columns: 1fr;
  }

  .services__grid {
    grid-template-columns: 1fr;
  }

  .styles__tabs {
    gap: 0.35rem;
  }

  .styles__tab {
    padding: 0.45rem 1rem;
    font-size: 0.78rem;
  }

  .styles__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .studio__subs {
    flex-direction: column;
  }

  .offer__box {
    flex-direction: column;
    text-align: center;
  }

  .offer__includes {
    text-align: center;
  }

  .contact__form-col {
    padding: var(--space-md);
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  .testimonial-card {
    flex: 0 0 85vw;
    min-width: 0;
  }
}

/* ── 24. Focus Styles (accessibility) ── */
:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
  border-radius: 3px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* ── 25. Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html { scroll-behavior: auto; }
}