/* ================================================================
   ROSA 珂薔美甲工作室 — styles.css
   字體用途：
   - --font-serif: Playfair Display + Noto Serif TC（品牌大標、section title）
   - --font-sans:  Inter + Noto Sans TC（UI、內文、按鈕、導覽列）
   色票：象牙白 / 香檳金 / 霧粉 / 裸膚 / 灰玫瑰
   ================================================================ */

/* ======================== ROOT VARIABLES ======================== */
:root {
  /* 色票 */
  --c-bg:           #FAF8F5;   /* 象牙白背景 */
  --c-surface:      #F5EDE8;   /* 奶油底面 */
  --c-surface-2:    #EDE0DB;   /* 較深奶油 */
  --c-primary:      #C9A96E;   /* 香檳金 */
  --c-primary-dark: #A88A52;   /* 深香檳金（hover） */
  --c-accent:       #D4A5A0;   /* 霧玫瑰 */
  --c-accent-light: #E8D5CF;   /* 淡霧粉 */
  --c-accent-pale:  #F5EDEA;   /* 極淡粉 */
  --c-text:         #2C2420;   /* 深棕文字 */
  --c-text-soft:    #6B5E59;   /* 中性棕 */
  --c-text-muted:   #9A8C88;   /* 暖灰 */
  --c-border:       rgba(201, 169, 110, 0.2);
  --c-border-soft:  rgba(212, 165, 160, 0.18);
  --c-overlay:      rgba(44, 36, 32, 0.48);

  /* 字體 */
  --font-serif: 'Playfair Display', 'Noto Serif TC', Georgia, serif;
  --font-sans:  'Inter', 'Noto Sans TC', system-ui, sans-serif;

  /* 字級 */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;

  /* 圓角 */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;
  --radius-full: 999px;

  /* 陰影 */
  --shadow-sm: 0 1px 4px rgba(44,36,32,0.06);
  --shadow-md: 0 4px 20px rgba(44,36,32,0.08);
  --shadow-lg: 0 8px 40px rgba(44,36,32,0.12);
  --shadow-gold: 0 4px 24px rgba(201,169,110,0.2);

  /* 間距 */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* 過渡 */
  --transition: 0.3s ease;
  --transition-slow: 0.6s ease;

  /* 最大寬度 */
  --max-w: 1200px;
  --max-w-narrow: 800px;
}

/* ======================== RESET & BASE ======================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

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

address { font-style: normal; }

/* ======================== TYPOGRAPHY ======================== */
h1, h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h3, h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.4;
}

/* ======================== LAYOUT ======================== */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-3xl) 0;
}

.section-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  color: var(--c-text);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--c-text-soft);
  max-width: 600px;
  margin-bottom: var(--space-2xl);
}

/* ======================== BUTTONS ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: all var(--transition);
  cursor: pointer;
  border: 1.5px solid transparent;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.btn-primary:hover {
  background: var(--c-primary-dark);
  border-color: var(--c-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-gold);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.8);
}

.btn-outline {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-full { width: 100%; }

/* ======================== NAVIGATION ======================== */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: all var(--transition);
}

/* Scrolled state */
.nav-header.scrolled {
  background: rgba(250, 248, 245, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  transition: opacity var(--transition);
}

.nav-logo:hover { opacity: 0.8; }

.nav-logo-en {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.15em;
  transition: color var(--transition);
}

.nav-logo-zh {
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.nav-header.scrolled .nav-logo-en { color: var(--c-text); }
.nav-header.scrolled .nav-logo-zh { color: var(--c-text-muted); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 400;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-full);
  color: rgba(255,255,255,0.85);
  transition: all var(--transition);
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.nav-header.scrolled .nav-link {
  color: var(--c-text-soft);
}

.nav-header.scrolled .nav-link:hover {
  color: var(--c-primary);
  background: var(--c-accent-pale);
}

.nav-cta {
  margin-left: var(--space-sm);
  font-size: var(--text-sm);
  padding: 0.625rem 1.5rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: #fff;
  transition: all var(--transition);
  border-radius: 2px;
}

.nav-header.scrolled .nav-toggle span {
  background: var(--c-text);
}

/* ======================== HERO ======================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

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

/* 漸層遮罩：讓文字清晰可讀 */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(44,36,32,0.62) 0%,
    rgba(44,36,32,0.35) 60%,
    rgba(201,169,110,0.18) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 8rem var(--space-md) 6rem;
}

.hero-eyebrow {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, var(--text-6xl));
  color: #fff;
  margin-bottom: var(--space-md);
  max-width: 720px;
}

.hero-title em {
  font-style: italic;
  color: var(--c-accent-light);
}

.hero-subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: rgba(255,255,255,0.82);
  margin-bottom: var(--space-xl);
  max-width: 520px;
  line-height: 1.8;
}

.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.trust-num {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: #fff;
  line-height: 1;
}

.trust-num sup {
  font-size: 0.6em;
  vertical-align: super;
}

.trust-label {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.05em;
}

.trust-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.25);
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.6);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  transition: opacity var(--transition);
  z-index: 1;
}

.hero-scroll:hover { opacity: 0.8; }

.hero-scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
  animation: scroll-line 1.8s ease-in-out infinite;
}

.hero-scroll-text {
  text-transform: uppercase;
  font-size: 10px;
}

@keyframes scroll-line {
  0%   { transform: scaleY(1); transform-origin: top; }
  50%  { transform: scaleY(0.4); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(1); transform-origin: bottom; }
}

/* ======================== PAIN POINTS ======================== */
.pain-section {
  background: var(--c-bg);
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.pain-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  transition: all var(--transition);
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-border);
}

.pain-icon {
  font-size: 1.8rem;
  margin-bottom: var(--space-sm);
}

.pain-card h3 {
  font-size: var(--text-base);
  color: var(--c-text);
  margin-bottom: var(--space-xs);
}

.pain-card p {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.7;
}

.pain-cta {
  text-align: center;
  padding: var(--space-xl);
  background: linear-gradient(135deg, var(--c-accent-pale), var(--c-surface));
  border-radius: var(--radius-xl);
  border: 1px solid var(--c-border-soft);
}

.pain-cta-text {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--c-text-soft);
  margin-bottom: var(--space-md);
  font-style: italic;
}

/* ======================== STATS ======================== */
.stats-section {
  background: var(--c-surface);
  padding: var(--space-2xl) 0;
}

.stats-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1;
}

.stat-suffix {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  color: var(--c-primary);
}

.stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  margin-top: 0.5rem;
  letter-spacing: 0.04em;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--c-border);
}

/* ======================== SERVICES ======================== */
.services-section {
  background: var(--c-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.service-card {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-primary));
  opacity: 0;
  transition: opacity var(--transition);
}

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

.service-card:hover::before {
  opacity: 1;
}

.service-card--highlight {
  background: linear-gradient(135deg, #fff 0%, var(--c-accent-pale) 100%);
  border-color: var(--c-accent);
}

.service-card--combo {
  border-color: var(--c-primary);
}

.service-badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: var(--c-accent);
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

.service-badge--gold {
  background: var(--c-primary);
}

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

.service-name {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--c-text);
}

.service-target {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--c-border-soft);
}

.service-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.service-list li {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  padding-left: 1.2em;
  position: relative;
}

.service-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--c-primary);
  font-size: 0.7em;
  top: 0.35em;
}

.service-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xs);
  border-top: 1px solid var(--c-border-soft);
}

.service-time {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
}

.service-price {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--c-primary);
}

.service-cta {
  margin-top: auto;
  font-size: var(--text-xs);
  padding: 0.625rem 1.25rem;
}

/* Service card cover image — bleeds to card edges via negative margins */
.service-card-img {
  margin: calc(-1 * var(--space-xl)) calc(-1 * var(--space-md)) 0.25rem;
  aspect-ratio: 3/2;
  overflow: hidden;
}

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

.service-card:hover .service-card-img img {
  transform: scale(1.05);
}

/* ======================== STYLE GALLERY ======================== */
.styles-section {
  background: var(--c-surface);
}

.style-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--c-border-soft);
}

.style-tab {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  color: var(--c-text-soft);
  transition: all var(--transition);
  border: 1.5px solid transparent;
}

.style-tab:hover {
  color: var(--c-primary);
  border-color: var(--c-border);
  background: #fff;
}

.style-tab.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}

.style-tab:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}

.style-panel {
  display: none;
}

.style-panel.active {
  display: block;
}

.style-desc {
  margin-bottom: var(--space-xl);
}

.style-desc p {
  font-size: var(--text-lg);
  color: var(--c-text-soft);
  max-width: 700px;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.style-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.style-tags span {
  font-size: var(--text-xs);
  padding: 0.25rem 0.875rem;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-full);
  color: var(--c-text-soft);
  letter-spacing: 0.04em;
}

.style-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.style-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.style-card-img-wrap {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
}

.style-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.style-card:hover .style-card-img-wrap img {
  transform: scale(1.04);
}

.style-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(44,36,32,0.6) 0%, transparent 55%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-sm);
  opacity: 0;
  transition: opacity var(--transition);
}

.style-card:hover .style-card-overlay {
  opacity: 1;
}

.style-card-overlay span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.08em;
}

.style-card-label {
  font-size: var(--text-xs);
  color: var(--c-text-soft);
  padding: 0.75rem var(--space-sm);
  text-align: center;
  letter-spacing: 0.04em;
}

/* ======================== WHY US ======================== */
.why-section {
  background: var(--c-bg);
}

.why-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.why-image {
  position: sticky;
  top: 7rem;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
}

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

.why-content { padding: var(--space-sm) 0; }

.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

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

.why-num {
  font-family: var(--font-serif);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.08em;
  min-width: 2rem;
  padding-top: 0.25rem;
}

.why-text h3 {
  font-size: var(--text-base);
  color: var(--c-text);
  margin-bottom: 0.4rem;
}

.why-text p {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.8;
}

/* Process photo showcase strip */
.process-showcase {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-top: var(--space-2xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.process-showcase-img {
  aspect-ratio: 1;
  overflow: hidden;
}

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

.process-showcase-img:hover img {
  transform: scale(1.06);
}

/* ======================== PROCESS ======================== */
.process-section {
  background: var(--c-surface);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: start;
  gap: 0;
}

.process-step {
  text-align: center;
  padding: var(--space-md) var(--space-xs);
  position: relative;
}

.process-num {
  font-family: var(--font-serif);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.process-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.process-step h3 {
  font-size: var(--text-sm);
  color: var(--c-text);
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: var(--text-xs);
  color: var(--c-text-soft);
  line-height: 1.7;
}

.process-connector {
  align-self: center;
  height: 1px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  opacity: 0.4;
  margin-top: -2.5rem;
}

/* ======================== STUDIO ======================== */
.studio-section {
  background: var(--c-bg);
}

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

.studio-main {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
}

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

.studio-main:hover img { transform: scale(1.03); }

.studio-main-caption, .studio-sub-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(to top, rgba(44,36,32,0.7), transparent);
  color: rgba(255,255,255,0.9);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
}

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

.studio-sub {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  flex: 1;
}

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

.studio-sub:hover img { transform: scale(1.04); }

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

.hygiene-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--c-surface);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.25rem;
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  transition: all var(--transition);
}

.hygiene-badge:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.hygiene-icon { font-size: 1rem; }

/* ======================== TESTIMONIALS ======================== */
.testimonials-section {
  background: var(--c-surface);
  overflow: hidden;
}

.testimonial-carousel {
  position: relative;
}

.testimonial-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  transition: transform 0.5s ease;
}

/* 輪播模式 */
.testimonial-carousel.is-carousel .testimonial-track {
  display: flex;
  width: 100%;
  overflow: hidden;
}

.testimonial-carousel.is-carousel .testimonial-card {
  flex: 0 0 calc(33.333% - var(--space-sm));
}

.testimonial-card {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.testimonial-stars {
  color: var(--c-primary);
  font-size: var(--text-base);
  letter-spacing: 0.1em;
}

.testimonial-card blockquote {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.85;
  flex: 1;
  font-style: italic;
}

.testimonial-footer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.testimonial-name {
  display: block;
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--c-text);
  font-style: normal;
}

.testimonial-context {
  display: block;
  font-size: var(--text-xs);
  color: var(--c-text-muted);
}

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

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--c-border);
  background: #fff;
  font-size: 1.25rem;
  color: var(--c-text-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.carousel-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-accent-pale);
}

.carousel-btn:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-border);
  border: none;
  padding: 0;
  transition: all var(--transition);
  cursor: pointer;
}

.carousel-dot.active {
  background: var(--c-primary);
  width: 24px;
  border-radius: 4px;
}

/* ======================== SPECIAL OFFER ======================== */
.offer-section {
  background: var(--c-bg);
}

.offer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  background: linear-gradient(135deg, var(--c-surface) 0%, var(--c-accent-pale) 100%);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.offer-eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: var(--space-xs);
}

.offer-title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  color: var(--c-text);
  margin-bottom: var(--space-sm);
}

.offer-text {
  font-size: var(--text-base);
  color: var(--c-text-soft);
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.offer-list {
  margin-bottom: var(--space-md);
}

.offer-list li {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  padding: 0.3rem 0 0.3rem 1.4rem;
  position: relative;
  border-bottom: 1px solid var(--c-border-soft);
}

.offer-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--c-primary);
  font-weight: 700;
}

.offer-price {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.offer-original {
  font-size: var(--text-lg);
  color: var(--c-text-muted);
  text-decoration: line-through;
}

.offer-now {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--c-primary);
}

.offer-note {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  margin-top: var(--space-sm);
}

.offer-calendar {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--c-border-soft);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.calendar-title {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--c-text);
}

.calendar-list {
  flex: 1;
}

.calendar-list li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--c-border-soft);
}

.calendar-list li:last-child { border-bottom: none; }

.cal-month {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-primary);
}

.cal-note {
  font-size: var(--text-xs);
  color: var(--c-text-soft);
}

/* ======================== FAQ ======================== */
.faq-section {
  background: var(--c-surface);
}

.faq-list {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--c-border-soft);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  gap: var(--space-sm);
  text-align: left;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--c-text);
  transition: color var(--transition);
}

.faq-question:hover { color: var(--c-primary); }

.faq-question[aria-expanded="true"] { color: var(--c-primary); }

.faq-icon {
  flex-shrink: 0;
  font-size: 1.25rem;
  color: var(--c-primary);
  transition: transform var(--transition);
  font-weight: 300;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-answer.open {
  max-height: 300px;
  padding-bottom: var(--space-md);
}

.faq-answer p {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.85;
}

/* ======================== CONTACT ======================== */
.contact-section {
  background: var(--c-bg);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-lead {
  font-size: var(--text-lg);
  color: var(--c-text-soft);
  line-height: 1.8;
  margin: var(--space-md) 0 var(--space-xl);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.contact-list li {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.7;
}

.contact-list a {
  color: var(--c-primary);
}

.contact-list a:hover { text-decoration: underline; }

.contact-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.contact-socials {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1.5px solid var(--c-border);
  color: var(--c-text-soft);
  transition: all var(--transition);
}

.social-btn span {
  font-weight: 700;
  color: var(--c-primary);
}

.social-btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-accent-pale);
}

.map-placeholder {
  background: var(--c-surface);
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  color: var(--c-text-muted);
  font-size: var(--text-sm);
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Form */
.contact-form-wrap {
  background: #fff;
  border: 1px solid var(--c-border-soft);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.form-title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--c-text);
  margin-bottom: 0.25rem;
}

.form-note {
  font-size: var(--text-xs);
  color: var(--c-text-muted);
  margin-bottom: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-md);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--c-text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(201,169,110,0.12);
}

.form-group input.invalid,
.form-group select.invalid {
  border-color: #e88080;
}

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

.form-error {
  font-size: var(--text-xs);
  color: #c0564a;
  min-height: 1rem;
}

.form-success {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  color: #fff;
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.form-success h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: var(--c-text);
  margin-bottom: var(--space-xs);
}

.form-success p {
  font-size: var(--text-sm);
  color: var(--c-text-soft);
  line-height: 1.8;
}

/* ======================== FOOTER ======================== */
.footer {
  background: var(--c-text);
  color: rgba(255,255,255,0.75);
  padding: var(--space-2xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--space-xl);
}

.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: var(--space-sm);
}

.footer-logo-en {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.15em;
}

.footer-logo-zh {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.1em;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-md);
  font-style: italic;
}

.footer-socials {
  display: flex;
  gap: var(--space-sm);
}

.footer-socials a {
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  padding: 0.3rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.footer-socials a:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
}

.footer-nav h4,
.footer-contact h4 {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}

.footer-nav a:hover { color: var(--c-primary); }

.footer-contact address p {
  font-size: var(--text-sm);
  margin-bottom: 0.5rem;
}

.footer-contact a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

.footer-contact a:hover { color: var(--c-primary); }

.footer-hours {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
  margin-top: var(--space-sm);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}

.footer-demo-note a {
  color: var(--c-primary);
  transition: opacity var(--transition);
}

.footer-demo-note a:hover { opacity: 0.8; }

/* ======================== BACK TO TOP ======================== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-gold);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 900;
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
}

.back-to-top:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}

/* ======================== ANIMATIONS ======================== */
.animate-fade-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.65s; }

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

.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ======================== RESPONSIVE ======================== */

/* Tablet */
@media (max-width: 1024px) {
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .style-grid { grid-template-columns: repeat(2, 1fr); }
  .why-inner { grid-template-columns: 1fr; }
  .why-image { position: static; aspect-ratio: 16/9; }
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
  }
  .process-connector { display: none; }
  .process-step:nth-child(3) { grid-column: 3; }
  .offer-inner { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--c-bg);
    align-items: center;
    justify-content: center;
    gap: 2rem;
    z-index: 999;
  }
  .nav-links.open .nav-link {
    font-size: var(--text-xl);
    color: var(--c-text);
  }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
}

/* Mobile */
@media (max-width: 640px) {
  .process-showcase { grid-template-columns: repeat(3, 1fr); }
  .process-showcase-img:nth-child(4),
  .process-showcase-img:nth-child(5) { display: none; }
  :root {
    --space-3xl: 5rem;
    --space-2xl: 3.5rem;
  }

  .pain-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .style-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl) var(--space-md);
  }
  .stat-divider { display: none; }
  .studio-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-trust { flex-direction: column; align-items: flex-start; gap: var(--space-md); }
  .trust-divider { display: none; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; }
  .offer-inner { padding: var(--space-xl); }
  .style-tabs { gap: 0.25rem; }
  .style-tab { font-size: var(--text-xs); padding: 0.4rem 0.875rem; }
  .testimonial-track { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .back-to-top { bottom: 1.25rem; right: 1.25rem; }
}

/* 極小螢幕 */
@media (max-width: 380px) {
  .style-grid { grid-template-columns: 1fr; }
}