/* ==========================================================================
   DƯỢC SĨ HOÀI - BỘ 3 TAM GIÁC VÀNG
   Clean, Pure CSS Modern Design System (Desktop, Tablet & Mobile Responsive)
   ========================================================================== */

:root {
  /* Color Palette */
  --primary-900: #0c1e33;
  --primary-800: #102a43;
  --primary-700: #193b68;
  --primary-600: #0f4c81;
  --primary-500: #1d72b8;
  --primary-100: #e0f2fe;
  --primary-50:  #f0f9ff;

  --gold-700: #b45309;
  --gold-600: #d97706;
  --gold-500: #f59e0b;
  --gold-400: #fbbf24;
  --gold-100: #fef3c7;
  --gold-50:  #fffbeb;

  --emerald-700: #047857;
  --emerald-600: #059669;
  --emerald-500: #10b981;
  --emerald-100: #d1fae5;
  --emerald-50:  #ecfdf5;

  --rose-700: #be123c;
  --rose-600: #e11d48;
  --rose-500: #f43f5e;
  --rose-100: #ffe4e6;
  --rose-50:  #fff1f2;

  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white:     #ffffff;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
  --shadow-glow: 0 0 25px rgba(245, 158, 11, 0.25);
  --shadow-glow-blue: 0 0 25px rgba(15, 76, 129, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Borders & Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.65;
  color: var(--slate-800);
  background-color: var(--slate-50);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.top-announcement {
  background: linear-gradient(90deg, #102a43, #0f4c81);
  color: #ffffff;
  padding: 8px 16px;
  font-size: 13.5px;
  font-weight: 500;
  text-align: center;
}

.top-announcement span {
  color: var(--gold-400);
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.brand-info {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--primary-800);
  line-height: 1.2;
  letter-spacing: -0.2px;
}

.brand-subtitle {
  font-size: 12px;
  font-weight: 600;
  color: var(--gold-600);
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hotline-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--primary-700);
  font-size: 15px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background: var(--primary-50);
  transition: all var(--transition-fast);
}

.hotline-link:hover {
  background: var(--primary-100);
  color: var(--primary-900);
}

.hotline-icon {
  width: 18px;
  height: 18px;
  fill: var(--primary-600);
}

.btn-header-cta {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: var(--white);
  padding: 10px 20px;
  font-size: 14.5px;
  font-weight: 700;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  position: relative;
  overflow: hidden;
  animation: bounceCTA 3.2s infinite ease-in-out 0.8s;
}

.btn-header-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerLightSweep 3s infinite ease-in-out;
}

.btn-header-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 18px rgba(217, 119, 6, 0.45);
  animation-play-state: paused;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 60px 0 70px;
  background: radial-gradient(1000px 500px at 50% -50px, #e0f2fe 0%, #ffffff 70%, #f8fafc 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--gold-100);
  border: 1px solid var(--gold-400);
  color: var(--gold-700);
  font-weight: 800;
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.hero-badge-tag .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--gold-600);
  box-shadow: 0 0 0 0 rgba(217, 119, 6, 0.7);
  animation: pulseAnimation 1.8s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 119, 6, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(217, 119, 6, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 119, 6, 0); }
}

/* ==========================================================================
   Micro-Animations: Bounce, Shimmer, Pulse, Beacon & Glow Effects
   ========================================================================== */

/* 1. Smooth, rhythmic vertical Bounce for CTA buttons */
@keyframes bounceCTA {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) scale(1);
  }
  40% {
    transform: translateY(-9px) scale(1.025);
  }
  60% {
    transform: translateY(-4px) scale(1.012);
  }
}

/* 2. Shimmer sweep effect reflecting light across buttons */
@keyframes shimmerLightSweep {
  0% {
    left: -100%;
  }
  30% {
    left: 140%;
  }
  100% {
    left: 140%;
  }
}

/* 3. Blinking live radar / beacon dots */
@keyframes beaconBlink {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.8);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.85);
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }
}

@keyframes beaconBlinkRed {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(225, 29, 72, 0.8);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.85);
    box-shadow: 0 0 0 8px rgba(225, 29, 72, 0);
  }
}

/* 4. Text glow blinking highlight */
@keyframes textGlowBlink {
  0%, 100% {
    color: #e11d48;
    text-shadow: 0 0 0 rgba(225, 29, 72, 0);
  }
  50% {
    color: #be123c;
    text-shadow: 0 0 14px rgba(225, 29, 72, 0.6);
  }
}

/* 5. Breathing card border glow for Form & Featured Product */
@keyframes borderGlowPulse {
  0%, 100% {
    box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.25), 0 0 16px rgba(245, 158, 11, 0.3);
    border-color: rgba(245, 158, 11, 0.7);
  }
  50% {
    box-shadow: 0 20px 45px -5px rgba(0, 0, 0, 0.35), 0 0 32px rgba(245, 158, 11, 0.65);
    border-color: rgba(245, 158, 11, 1);
  }
}

/* 6. Mobile sticky CTA heartbeat pulse */
@keyframes mobileCtaPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 4px 14px rgba(217, 119, 6, 0.4);
  }
  50% {
    transform: scale(1.04);
    box-shadow: 0 8px 24px rgba(217, 119, 6, 0.75);
  }
}

/* Beacon Dot Classes */
.beacon-dot-live {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--emerald-500);
  animation: beaconBlink 1.5s infinite ease-in-out;
  margin-right: 6px;
  vertical-align: middle;
}

.beacon-dot-urgent {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--rose-500);
  animation: beaconBlinkRed 1.4s infinite ease-in-out;
  margin-right: 6px;
  vertical-align: middle;
}

.hero-title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 900;
  color: var(--primary-900);
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero-title .highlight-red {
  color: var(--rose-600);
  position: relative;
  display: inline-block;
  animation: textGlowBlink 2.2s infinite ease-in-out;
}

.hero-quote-box {
  background: #ffffff;
  border-left: 4px solid var(--primary-600);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
  font-size: 16.5px;
  font-style: italic;
  color: var(--slate-700);
  line-height: 1.6;
}

.hero-quote-box strong {
  color: var(--primary-800);
  font-style: normal;
}

.symptoms-checklist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}

.symptom-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  font-size: 15px;
  font-weight: 600;
  color: var(--slate-800);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.symptom-item:hover {
  transform: translateY(-2px);
  border-color: var(--primary-500);
}

.symptom-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--rose-100);
  color: var(--rose-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 13px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.btn-primary-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #ffffff;
  padding: 16px 32px;
  font-size: 17px;
  font-weight: 800;
  border-radius: var(--radius-full);
  box-shadow: 0 8px 20px rgba(217, 119, 6, 0.35);
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.2px;
  position: relative;
  overflow: hidden;
  animation: bounceCTA 2.5s infinite ease-in-out;
}

.btn-primary-large::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerLightSweep 3s infinite ease-in-out;
}

.btn-primary-large:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 30px rgba(217, 119, 6, 0.55);
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  animation-play-state: paused;
}

.btn-secondary-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: var(--primary-700);
  border: 2px solid var(--primary-600);
  padding: 14px 26px;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.btn-secondary-large:hover {
  background: var(--primary-50);
  color: var(--primary-900);
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13.5px;
  color: var(--slate-600);
  font-weight: 500;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-item svg {
  width: 16px;
  height: 16px;
  fill: var(--emerald-600);
}

/* Hero Visual Card */
.hero-visual-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: #ffffff;
  border: 4px solid #ffffff;
}

.hero-visual-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.hero-floating-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: rgba(16, 42, 67, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 14px 18px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 14px;
}

.floating-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 22px;
  flex-shrink: 0;
}

.floating-badge-text h4 {
  font-size: 15px;
  font-weight: 800;
  color: var(--gold-400);
  margin-bottom: 2px;
}

.floating-badge-text p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.35;
}

/* ==========================================================================
   Section Common Styling
   ========================================================================== */
.section {
  padding: 70px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.section-tag.gold {
  background: var(--gold-100);
  color: var(--gold-700);
}

.section-tag.rose {
  background: var(--rose-100);
  color: var(--rose-700);
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-900);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}

.section-desc {
  font-size: 17px;
  color: var(--slate-600);
  line-height: 1.6;
}

/* ==========================================================================
   Section 2: Pain Points (Những đêm như thế này)
   ========================================================================== */
.bg-light-blue {
  background-color: #f0f7ff;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pain-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--rose-100);
}

.pain-card-img-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.pain-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.pain-card-body {
  padding: 22px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.pain-time-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--rose-50);
  color: var(--rose-700);
  font-size: 12.5px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  width: fit-content;
}

.pain-card-title {
  font-size: 19px;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 10px;
  line-height: 1.35;
}

.pain-card-desc {
  font-size: 15px;
  color: var(--slate-600);
  line-height: 1.55;
}

/* ==========================================================================
   Section 3: Vòng xoáy suy giảm sức khỏe
   ========================================================================== */
.degradation-wrapper {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--slate-200);
}

.degradation-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 36px;
  position: relative;
}

.degradation-step-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  position: relative;
  transition: all var(--transition-fast);
}

.degradation-step-card:hover {
  background: #ffffff;
  box-shadow: var(--shadow-md);
  border-color: var(--rose-500);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--rose-600);
  color: #ffffff;
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--slate-800);
  line-height: 1.4;
}

.degradation-conclusion {
  background: linear-gradient(135deg, #fff1f2, #ffe4e6);
  border: 2px dashed var(--rose-500);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
  text-align: center;
}

.degradation-conclusion p {
  font-size: 19px;
  font-weight: 800;
  color: var(--rose-700);
  line-height: 1.5;
}

/* ==========================================================================
   Section 4: 3 Nền tảng vi chất bên trong
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.pillar-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--slate-200);
  border-top: 6px solid var(--primary-600);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.pillar-card:nth-child(1) { border-top-color: #0284c7; }
.pillar-card:nth-child(2) { border-top-color: #d97706; }
.pillar-card:nth-child(3) { border-top-color: #059669; }

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

.pillar-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: var(--primary-50);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}

.pillar-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--primary-900);
  margin-bottom: 12px;
}

.pillar-symptom-tag {
  background: var(--slate-100);
  color: var(--slate-700);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 16px;
  display: inline-block;
}

.pillar-solution {
  font-size: 15.5px;
  color: var(--slate-700);
  line-height: 1.6;
}

.pillar-arrow {
  color: var(--primary-600);
  font-weight: 700;
  margin-right: 4px;
}

/* ==========================================================================
   Section 5: Giới thiệu Dược sĩ Hoài
   ========================================================================== */
.expert-section {
  background: linear-gradient(135deg, #0f2b48 0%, #102a43 100%);
  color: #ffffff;
  overflow: hidden;
}

.expert-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: center;
}

.expert-portrait-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 4px solid rgba(255, 255, 255, 0.15);
}

.expert-portrait-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.expert-experience-badge {
  position: absolute;
  top: 24px;
  left: 24px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: #ffffff;
  padding: 12px 20px;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.exp-years {
  font-size: 26px;
  font-weight: 900;
  line-height: 1;
}

.exp-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.expert-content .section-tag {
  background: rgba(245, 158, 11, 0.2);
  color: var(--gold-400);
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.expert-content h2 {
  font-size: 36px;
  font-weight: 900;
  line-height: 1.25;
  color: #ffffff;
  margin-bottom: 20px;
}

.expert-content h2 span {
  color: var(--gold-400);
}

.expert-quote {
  font-size: 17.5px;
  line-height: 1.7;
  color: #e2e8f0;
  margin-bottom: 28px;
  font-style: italic;
  border-left: 3px solid var(--gold-400);
  padding-left: 18px;
}

.expert-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 34px;
}

.expert-point-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  color: #f1f5f9;
}

.expert-point-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--gold-500);
  color: var(--slate-900);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   Section 6: Chi tiết Bộ 3 Tam Giác Vàng
   ========================================================================== */
.products-wrapper {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.product-row-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--slate-200);
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 40px;
  align-items: center;
  transition: all var(--transition-normal);
}

.product-row-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-500);
}

.product-row-card.featured {
  border: 2px solid var(--gold-500);
  box-shadow: var(--shadow-glow);
  animation: borderGlowPulse 4s infinite ease-in-out;
}

.product-media-box {
  background: var(--slate-50);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 1px solid var(--slate-100);
}

.product-media-box img {
  max-height: 320px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

.product-row-card:hover .product-media-box img {
  transform: scale(1.05);
}

.product-origin-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--slate-700);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.product-details {
  display: flex;
  flex-direction: column;
}

.product-type-pill {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-600);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.product-name {
  font-size: 28px;
  font-weight: 900;
  color: var(--slate-900);
  line-height: 1.25;
  margin-bottom: 10px;
}

.product-tagline {
  font-size: 16px;
  font-weight: 600;
  color: var(--gold-700);
  margin-bottom: 16px;
}

.product-spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.product-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15.5px;
  color: var(--slate-700);
  line-height: 1.5;
}

.spec-check {
  color: var(--emerald-600);
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}

.product-card-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-card-order {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-700);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 15px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn-card-order::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerLightSweep 3.5s infinite ease-in-out;
}

.btn-card-order:hover {
  background: var(--primary-800);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 16px rgba(15, 76, 129, 0.35);
}

.dosage-badge {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--slate-600);
  background: var(--slate-100);
  padding: 8px 14px;
  border-radius: var(--radius-full);
}

.product-disclaimer {
  font-size: 13px;
  color: var(--slate-500);
  font-style: italic;
  margin-top: 14px;
  line-height: 1.45;
  display: block;
}

.brand-gold-title {
  font-size: 21px;
  font-weight: 800;
  color: var(--primary-900);
  display: flex;
  align-items: center;
  letter-spacing: -0.3px;
}

/* ==========================================================================
   Section 7: Cơ chế Tam Giác Vàng (Combo Hoàn Hảo)
   ========================================================================== */
.triangle-section {
  background: radial-gradient(circle at center, #ffffff 0%, #f1f5f9 100%);
}

.triangle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.triangle-image-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--slate-200);
  text-align: center;
  overflow: hidden;
}

.triangle-image-card img {
  max-height: 540px;
  width: 100%;
  margin: 0 auto;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.triangle-details h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-900);
  margin-bottom: 20px;
  line-height: 1.3;
}

.synergy-card-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}

.synergy-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  border-left: 4px solid var(--slate-400);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.synergy-card.magie { border-left-color: #0284c7; }
.synergy-card.canxi { border-left-color: #d97706; }
.synergy-card.d3    { border-left-color: #059669; }

.synergy-header {
  font-size: 16px;
  font-weight: 800;
  color: var(--slate-900);
}

.synergy-desc {
  font-size: 15px;
  color: var(--slate-600);
  line-height: 1.5;
}

.triangle-summary-box {
  background: var(--gold-50);
  border: 1px solid var(--gold-400);
  border-radius: var(--radius-lg);
  padding: 20px;
  font-size: 16px;
  color: var(--gold-700);
  font-weight: 700;
  line-height: 1.6;
}

/* ==========================================================================
   Section 8: Quà Tặng Đặc Quyền & Đồng Hành 1-1
   ========================================================================== */
.companion-card-centered {
  max-width: 840px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1.5px solid var(--gold-300);
}

.companion-desc {
  font-size: 16px;
  color: var(--slate-600);
  line-height: 1.6;
  margin-bottom: 24px;
}

.companion-card-centered h3 {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary-900);
  margin-bottom: 14px;
  line-height: 1.3;
}

.gift-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold-100);
  color: var(--gold-700);
  border: 1px solid var(--gold-400);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 13.5px;
  margin-bottom: 16px;
  width: fit-content;
}

.gifts-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.gifts-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.gift-item {
  background: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.gift-item:hover {
  transform: translateX(4px);
  border-color: var(--gold-500);
}

.gift-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gold-100);
  color: var(--gold-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.gift-item-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--slate-800);
  line-height: 1.4;
}

/* ==========================================================================
   Section 8B: Feedback / Đánh giá của khách hàng (Chuẩn mẫu ảnh gửi)
   ========================================================================== */
.feedback-section {
  background: #f8fafc;
  padding: 60px 0;
}

.feedback-widget-card {
  max-width: 680px;
  margin: 0 auto;
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 30px 24px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--slate-200);
}

.feedback-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.feedback-title {
  font-size: 19px;
  font-weight: 800;
  color: #111827;
  margin: 0 0 6px 0;
  line-height: 1.3;
}

.feedback-rating-line {
  display: flex;
  align-items: center;
  gap: 8px;
}

.feedback-score-number {
  font-size: 18px;
  font-weight: 800;
  color: #111827;
}

.feedback-stars-gold {
  color: #f59e0b;
  font-size: 18px;
  letter-spacing: 2px;
}

.feedback-see-more-link {
  font-size: 14px;
  font-weight: 600;
  color: #6b7280;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
  white-space: nowrap;
}

.feedback-see-more-link:hover {
  color: var(--primary-600);
}

.see-more-arrow {
  font-size: 18px;
  line-height: 1;
}

.feedback-divider {
  height: 1px;
  background: #f1f5f9;
  margin: 14px 0 16px 0;
}

.feedback-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.fb-filter-tag {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #475569;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.fb-filter-tag.active {
  background: #fffbeb;
  border-color: #f59e0b;
  color: #b45309;
}

.fb-filter-tag:hover {
  border-color: #f59e0b;
}

.fb-view-original-btn {
  margin-left: auto;
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1d4ed8;
}

.fb-original-screenshot-wrap {
  margin-bottom: 24px;
  padding: 16px;
  background: #f8fafc;
  border-radius: 12px;
  border: 1px dashed #cbd5e1;
  text-align: center;
}

.screenshot-caption {
  font-size: 13px;
  color: #64748b;
  font-weight: 600;
  margin-bottom: 12px;
}

.fb-original-img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.feedback-reviews-list {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.feedback-item {
  padding-bottom: 24px;
  border-bottom: 1px solid #f1f5f9;
}

.feedback-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.feedback-user-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.feedback-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #e2e8f0;
}

.feedback-user-top {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.fb-verified-badge {
  font-size: 11.5px;
  color: #16a34a;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.feedback-username {
  font-size: 15.5px;
  font-weight: 800;
  color: #111827;
  line-height: 1.2;
}

.feedback-stars-small {
  color: #f59e0b;
  font-size: 13px;
  letter-spacing: 2px;
  margin-top: 3px;
  display: flex;
  align-items: center;
}

.feedback-date {
  font-size: 12px;
  color: #94a3b8;
  font-weight: 500;
  letter-spacing: normal;
  margin-left: 6px;
}

.feedback-product-type {
  font-size: 13px;
  color: #6b7280;
  margin-bottom: 10px;
}

.feedback-item.hidden {
  display: none;
}

.feedback-comment-text {
  font-size: 14.5px;
  line-height: 1.6;
  color: #1f2937;
  margin-bottom: 14px;
}

.feedback-photos-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.fb-photo-thumb {
  width: 105px;
  height: 105px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  background: #f8fafc;
}

.fb-photo-thumb:hover {
  transform: scale(1.04);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.fb-photo-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feedback-card-footer {
  text-align: center;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid #f1f5f9;
}

/* Photo Lightbox Modal */
.photo-lightbox-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 99999;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.photo-lightbox-modal.active {
  display: flex;
}

.photo-lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.photo-lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.photo-lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: transparent;
  color: #ffffff;
  border: none;
  font-size: 36px;
  cursor: pointer;
  line-height: 1;
}

/* ==========================================================================
   Section 9: Form Nhận Tư Vấn Chốt Đơn
   ========================================================================== */
.form-section {
  background: linear-gradient(135deg, #0c1e33 0%, #102a43 100%);
  color: #ffffff;
  padding: 80px 0;
  position: relative;
}

.form-wrapper-card {
  max-width: 760px;
  margin: 0 auto;
  background: #ffffff;
  color: var(--slate-900);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  position: relative;
  border: 2px solid var(--gold-400);
  animation: borderGlowPulse 3.5s infinite ease-in-out;
}

.form-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--gold-100);
  color: var(--gold-700);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
}

.form-title {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary-900);
  line-height: 1.25;
  margin-bottom: 10px;
  text-align: center;
}

.form-subtitle {
  font-size: 16px;
  color: var(--slate-600);
  text-align: center;
  margin-bottom: 30px;
  line-height: 1.5;
}

.lead-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--slate-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-label .required {
  color: var(--rose-600);
}

.form-input {
  width: 100%;
  height: 52px;
  padding: 0 18px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--slate-300);
  background: var(--slate-50);
  font-size: 16px;
  color: var(--slate-900);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-600);
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(15, 76, 129, 0.12);
}

/* Issue Selection Checkboxes */
.issues-selection-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.issue-checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--slate-50);
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--slate-800);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.issue-checkbox-label:hover {
  border-color: var(--primary-500);
  background: #ffffff;
}

.issue-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-600);
  cursor: pointer;
}

.issue-checkbox-label.checked {
  background: var(--primary-50);
  border-color: var(--primary-600);
  color: var(--primary-900);
  font-weight: 700;
}

.btn-submit-lead {
  background: linear-gradient(135deg, var(--gold-500) 0%, var(--gold-600) 100%);
  color: #ffffff;
  font-size: 18px;
  font-weight: 800;
  padding: 18px 24px;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(217, 119, 6, 0.4);
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 10px;
  width: 100%;
  position: relative;
  overflow: hidden;
  animation: bounceCTA 2.6s infinite ease-in-out;
}

.btn-submit-lead::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerLightSweep 3s infinite ease-in-out 1.2s;
}

.btn-submit-lead:hover {
  transform: translateY(-3px) scale(1.015);
  box-shadow: 0 16px 36px rgba(217, 119, 6, 0.6);
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  animation-play-state: paused;
}

.form-privacy-note {
  font-size: 13px;
  color: var(--slate-500);
  text-align: center;
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #081422;
  color: #94a3b8;
  padding: 60px 0 100px;
  font-size: 14.5px;
  line-height: 1.7;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 0.8fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand h4 {
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.footer-brand p {
  color: #cbd5e1;
  margin-bottom: 16px;
}

.footer-col h5 {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--gold-500);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #64748b;
}

/* ==========================================================================
   Scroll Progress Indicator & Quick Navigation (Mobile & Tablet)
   ========================================================================== */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3.5px;
  background: linear-gradient(90deg, #10b981 0%, var(--gold-500) 50%, #f59e0b 100%);
  z-index: 10001;
  transition: width 0.1s cubic-bezier(0.2, 0, 0, 1);
  box-shadow: 0 1px 6px rgba(217, 119, 6, 0.4);
}

.mobile-quick-nav {
  display: none;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 64px;
  z-index: 990;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.quick-nav-track {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}

.quick-nav-track::-webkit-scrollbar {
  display: none;
}

.quick-nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 13px;
  border-radius: var(--radius-full);
  background: var(--slate-100);
  color: var(--slate-700);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.04);
  -webkit-tap-highlight-color: transparent;
}

.quick-nav-pill:active {
  transform: scale(0.96);
}

.quick-nav-pill.active {
  background: var(--primary-50);
  color: var(--primary-700);
  border-color: var(--primary-300);
  font-weight: 700;
}

.quick-nav-pill.highlight {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.3);
  font-weight: 700;
}

/* Floating Back to Top Button */
.btn-back-to-top {
  position: fixed;
  right: 16px;
  bottom: 84px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #ffffff;
  color: var(--primary-700);
  border: 1.5px solid var(--primary-200);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 995;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}

.btn-back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-back-to-top:hover,
.btn-back-to-top:active {
  background: var(--primary-50);
  border-color: var(--primary-600);
  transform: scale(1.05);
}

/* ==========================================================================
   Mobile Fixed Bottom Navigation Bar (Safe Area Aware)
   ========================================================================== */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--slate-200);
  padding: 10px 16px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  padding-left: calc(16px + env(safe-area-inset-left, 0px));
  padding-right: calc(16px + env(safe-area-inset-right, 0px));
  box-shadow: 0 -4px 18px rgba(0, 0, 0, 0.08);
}

.mobile-bottom-actions {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 10px;
}

.btn-mobile-call {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--primary-50);
  color: var(--primary-700);
  border: 1.5px solid var(--primary-600);
  padding: 12px 14px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 14.5px;
}

.btn-mobile-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-600));
  color: #ffffff;
  padding: 12px 16px;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 14.5px;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.35);
  position: relative;
  overflow: hidden;
  animation: mobileCtaPulse 2s infinite ease-in-out;
}

.btn-mobile-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  animation: shimmerLightSweep 2.5s infinite ease-in-out;
}

/* ==========================================================================
   Modal / Toast Notification
   ========================================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
  animation: modalPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalPop {
  0% { transform: scale(0.9); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--emerald-100);
  color: var(--emerald-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 18px;
}

.modal-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-900);
  margin-bottom: 10px;
}

.modal-desc {
  font-size: 15.5px;
  color: var(--slate-600);
  line-height: 1.55;
  margin-bottom: 24px;
}

.btn-modal-close {
  background: var(--primary-700);
  color: #ffffff;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 15.5px;
  transition: all var(--transition-fast);
}

.btn-modal-close:hover {
  background: var(--primary-800);
}

/* ==========================================================================
   Responsive Breakpoints (Desktop, Laptop, Tablet & Mobile)
   ========================================================================== */

/* Laptops & Tablets (< 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-visual-card {
    max-width: 540px;
    margin: 0 auto;
  }

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

  .degradation-steps {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .expert-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .expert-portrait-card {
    max-width: 480px;
    margin: 0 auto;
  }

  .product-row-card {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .product-media-box {
    max-width: 420px;
    margin: 0 auto;
  }

  .triangle-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .companion-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .gifts-grid-2col {
    grid-template-columns: 1fr;
  }

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

/* Tablets & Mobile (< 768px) */
@media (max-width: 768px) {
  body {
    font-size: 15.5px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .site-header .container {
    height: 64px;
  }

  .brand-logo {
    height: 38px;
  }

  .brand-title {
    font-size: 15.5px;
  }

  .header-actions .hotline-link,
  .header-actions .btn-header-cta {
    display: none;
  }

  .hero-section {
    padding: 24px 0 36px;
  }

  .hero-title {
    font-size: 26px;
    line-height: 1.3;
  }

  .symptoms-checklist {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .btn-primary-large,
  .btn-secondary-large {
    width: 100%;
  }

  /* Compact section vertical rhythm to reduce mobile scroll fatigue */
  .section {
    padding: 34px 0;
  }

  .section-header {
    margin-bottom: 22px;
  }

  .section-title {
    font-size: 24px;
    line-height: 1.3;
  }

  .section-desc {
    font-size: 15px;
    line-height: 1.5;
  }

  .pain-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .pain-card-img-wrap {
    height: 160px;
  }

  .degradation-wrapper {
    padding: 20px 16px;
  }

  .degradation-steps {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pillar-card {
    padding: 20px 18px;
  }

  .expert-content h2 {
    font-size: 24px;
  }

  .product-row-card {
    padding: 20px 16px;
  }

  .product-name {
    font-size: 22px;
  }

  .product-card-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .companion-card-centered {
    padding: 24px 16px;
  }

  .companion-card-centered h3 {
    font-size: 21px;
  }

  .feedback-section {
    padding: 32px 0;
  }

  .feedback-widget-card {
    padding: 18px 14px;
  }

  .feedback-title {
    font-size: 17px;
  }

  .fb-photo-thumb {
    width: 82px;
    height: 82px;
  }

  .fb-view-original-btn {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }

  .form-wrapper-card {
    padding: 24px 18px;
  }

  .form-title {
    font-size: 24px;
  }

  .issues-selection-grid {
    grid-template-columns: 1fr;
  }

  /* iOS Safari 16px input zoom bug prevention */
  input[type="text"],
  input[type="tel"],
  input[type="email"],
  select,
  textarea {
    font-size: 16px !important;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer {
    padding-bottom: calc(105px + env(safe-area-inset-bottom, 0px));
  }

  .mobile-quick-nav {
    display: block;
  }

  .mobile-bottom-bar {
    display: block;
  }

  .btn-back-to-top {
    bottom: calc(84px + env(safe-area-inset-bottom, 0px));
  }
}