/* ==========================================================================
   DESIGN SYSTEM & CUSTOM STYLES - SUTURAS EM ALÇAS
   Visual Identity: Oriental Classic / Luxury Medical (Beige, Dark Green, Gold)
   ========================================================================== */

/* Variables */
:root {
  --color-bg-light: #FAF7F0;       /* Parchment/Linen light background */
  --color-bg-card: #FFFFFF;
  --color-primary: #0B2C1B;        /* Deep emerald/forest green */
  --color-primary-dark: #061F13;   /* Near-black jade */
  --color-accent-gold: #E4B34F;    /* Bright gold */
  --color-accent-darkgold: #D4A33B;/* Darker antique gold */
  --color-text-dark: #1E2B22;      /* Off-black dark green text */
  --color-text-light: #F0F4F1;     /* Light grayish green */
  --color-text-muted: #6B7C72;     /* Muted sage */
  --color-border: #E5E0D5;
  --color-danger: #D9534F;
  --font-serif: 'Cinzel', Georgia, serif;
  --font-sans: 'Montserrat', sans-serif;
  --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-sm: 0 4px 12px rgba(11, 44, 27, 0.05);
  --shadow-md: 0 8px 24px rgba(11, 44, 27, 0.1);
  --shadow-lg: 0 16px 40px rgba(11, 44, 27, 0.15);
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  background-color: var(--color-bg-light);
  font-family: var(--font-sans);
  color: var(--color-text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100%;
}

/* Language Selection System Visibility */
body.lang-pt .lang-en, body.lang-pt .lang-es {
  display: none !important;
}

body.lang-en .lang-pt, body.lang-en .lang-es {
  display: none !important;
}

body.lang-es .lang-pt, body.lang-es .lang-en {
  display: none !important;
}

/* Base Components & Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  border-radius: 4px;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  gap: 10px;
  white-space: nowrap; /* Prevent button text from wrapping */
}

.btn-gold {
  background-color: var(--color-accent-gold);
  color: var(--color-primary-dark);
  border-color: var(--color-accent-gold);
  box-shadow: 0 4px 15px rgba(228, 179, 79, 0.3);
}

.btn-gold:hover {
  background-color: var(--color-accent-darkgold);
  border-color: var(--color-accent-darkgold);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(228, 179, 79, 0.4);
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent-gold);
  border-color: var(--color-accent-gold);
}

.btn-outline:hover {
  background-color: var(--color-accent-gold);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1rem;
  letter-spacing: 0.5px;
}

.btn-header {
  padding: 10px 20px;
  font-size: 0.85rem;
}

/* Header & Floating Language Switcher */
.lang-selector-floating {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  background-color: rgba(6, 31, 19, 0.85);
  border: 1px solid var(--color-accent-gold);
  border-radius: 30px;
  padding: 4px;
  display: flex;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(8px);
}

.lang-btn {
  background: none;
  border: none;
  color: var(--color-text-light);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn.active {
  background-color: var(--color-accent-gold);
  color: var(--color-primary-dark);
}

/* Navigation Header */
.main-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding: 16px 0;
  z-index: 1050; /* Raised above cursor glow (z-index: 1000) to prevent click interception */
  background-color: var(--color-primary-dark);
  border-bottom: 1px solid rgba(228, 179, 79, 0.15);
}

/* Integrated Header Language Selector */
.lang-selector-header {
  display: inline-flex;
  background-color: rgba(6, 31, 19, 0.6);
  border: 1px solid rgba(228, 179, 79, 0.3);
  border-radius: 20px;
  padding: 2px;
  margin-right: 12px;
  align-items: center;
}

.lang-selector-header .lang-btn {
  background: none;
  border: none;
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 15px;
  cursor: pointer;
  transition: var(--transition);
}

.lang-selector-header .lang-btn.active {
  background-color: var(--color-accent-gold);
  color: var(--color-primary-dark);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px; /* Minimum safety margin between blocks */
}

.logo-wrapper {
  max-width: 320px; /* Reduced to 320px to allow menu links to display on a single line */
  width: 100%;
}

.header-logo {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.nav-menu {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex: 1; /* Center elements with safety margin */
}

.nav-menu a {
  font-family: var(--font-sans);
  color: #FFFFFF; /* High contrast for dark green gradient header */
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: var(--transition);
  position: relative;
  white-space: nowrap; /* Prevent menu item text from wrapping */
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent-gold);
  transition: var(--transition);
}

.nav-menu a:hover {
  color: var(--color-accent-gold);
}

.nav-menu a:hover::after {
  width: 100%;
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding-top: 160px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background-color: var(--color-bg-light);
  overflow: hidden;
}

/* Background overlay with subtle oriental mountain parchment */
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 80% 20%, rgba(228, 179, 79, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(11, 44, 27, 0.03) 0%, transparent 60%);
  z-index: 1;
}

/* Oriental Accent Drawings (SVG-based or background images) */
.oriental-accent {
  position: absolute;
  opacity: 0.08;
  pointer-events: none;
  z-index: 1;
}

.bamboo-left {
  left: 0;
  bottom: 0;
  width: 300px;
  height: 600px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 200'%3E%3Cpath d='M10,200 Q20,150 15,100 T25,0 M15,100 Q5,80 0,60 M17,80 Q25,60 30,40 M19,50 Q30,30 25,0 M13,130 Q3,110 0,90 M16,110 Q26,90 35,80' stroke='%230B2C1B' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: contain;
}

.mountains-bg {
  right: 0;
  bottom: 0;
  width: 600px;
  height: 400px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 100'%3E%3Cpath d='M0,100 L30,60 L70,85 L120,40 L160,75 L200,50 L200,100 Z' fill='none' stroke='%230B2C1B' stroke-width='1'/%3E%3Cpath d='M20,100 L50,75 L80,90 L110,65 L150,85 L200,68' fill='none' stroke='%230B2C1B' stroke-dasharray='2 2' stroke-width='0.75'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: bottom right;
  background-size: contain;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-badge {
  background-color: rgba(11, 44, 27, 0.08);
  border: 1px solid rgba(11, 44, 27, 0.15);
  padding: 8px 16px;
  border-radius: 30px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-badge i {
  color: var(--color-accent-gold);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  line-height: 1.2;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title .highlight {
  position: relative;
  display: inline-block;
  color: var(--color-accent-gold);
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 4px;
  background-color: rgba(228, 179, 79, 0.2);
  z-index: -1;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-dark);
  margin-bottom: 36px;
  font-weight: 300;
}

.hero-metrics {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  background-color: rgba(255, 255, 255, 0.6);
  padding: 16px 24px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  backdrop-filter: blur(4px);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-num {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.metric-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: 600;
}

.metric-divider {
  width: 1px;
  background-color: var(--color-border);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero Image Wrapper with Oriental border corners */
.hero-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.oriental-frame {
  position: relative;
  padding: 16px;
  background-color: var(--color-bg-light);
  box-shadow: var(--shadow-lg);
  border-radius: 4px;
  border: 1px solid rgba(11, 44, 27, 0.1);
}

.hero-image {
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: 2px;
  display: block;
  object-fit: cover;
  filter: contrast(1.02) brightness(0.98);
}

/* Oriental border corners as decorative elements */
.frame-border-corner {
  position: absolute;
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-accent-gold);
  pointer-events: none;
}

.frame-border-corner.top-left {
  top: 8px;
  left: 8px;
  border-right: none;
  border-bottom: none;
}

.frame-border-corner.top-right {
  top: 8px;
  right: 8px;
  border-left: none;
  border-bottom: none;
}

.frame-border-corner.bottom-left {
  bottom: 8px;
  left: 8px;
  border-right: none;
  border-top: none;
}

.frame-border-corner.bottom-right {
  bottom: 8px;
  right: 8px;
  border-left: none;
  border-top: none;
}

.floating-tag {
  position: absolute;
  background-color: var(--color-primary-dark);
  border: 1px solid var(--color-accent-gold);
  color: var(--color-text-light);
  padding: 10px 16px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  z-index: 3;
}

.shanghai-tag {
  left: -20px;
  bottom: 60px;
  animation: float-slow 4s ease-in-out infinite alternate;
}

.speaker-tag {
  right: -20px;
  top: 60px;
  animation: float-slow 4s ease-in-out infinite alternate-reverse;
}

.tag-icon {
  color: var(--color-accent-gold);
  font-size: 1.1rem;
}

.tag-text {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Philosophy Strip (Quotes) */
.philosophy-strip {
  background-color: var(--color-primary-dark);
  padding: 40px 0;
  border-top: 1px solid var(--color-accent-gold);
  border-bottom: 1px solid var(--color-accent-gold);
  color: var(--color-text-light);
  position: relative;
  z-index: 10;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  align-items: center;
  gap: 32px;
}

.philosophy-divider {
  height: 50px;
  background-color: rgba(228, 179, 79, 0.3);
}

.philosophy-text-card {
  text-align: center;
}

.quote-text {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--color-text-light);
  line-height: 1.5;
  letter-spacing: 0.5px;
}

/* Section Header Styling */
.section-header {
  margin-bottom: 56px;
}

.section-tagline {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent-gold);
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--color-primary);
  font-weight: 600;
}

.section-separator {
  width: 60px;
  height: 2px;
  background-color: var(--color-accent-gold);
  margin: 16px auto 0;
}

/* Technique Section */
.technique-section {
  padding: 100px 0;
  background-color: var(--color-bg-light);
  position: relative;
}

.technique-intro {
  margin-bottom: 64px;
}

.intro-card-primary {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 48px;
  box-shadow: var(--shadow-sm);
  align-items: center;
}

.intro-left h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 20px;
  line-height: 1.4;
}

.intro-left p {
  color: var(--color-text-dark);
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 400;
}

.tag-highlight {
  display: inline-block;
  background-color: rgba(11, 44, 27, 0.05);
  border-left: 3px solid var(--color-accent-gold);
  padding: 12px 20px;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
  margin-top: 16px;
}

.poster-container {
  border: 1px solid rgba(11, 44, 27, 0.15);
  padding: 10px;
  background-color: var(--color-bg-light);
  box-shadow: var(--shadow-md);
  border-radius: 4px;
}

.poster-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

/* Key Pillars Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.pillar-card {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  padding: 40px 32px;
  border-radius: 4px;
  border-bottom: 4px solid var(--color-accent-gold);
  transition: var(--transition);
}

.pillar-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  background-color: var(--color-primary-dark);
}

.pillar-icon {
  font-size: 2.2rem;
  color: var(--color-accent-gold);
  margin-bottom: 24px;
}

.pillar-card h4 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.pillar-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  opacity: 0.9;
  line-height: 1.6;
  font-weight: 300;
}

/* Showcase Section - Before/After Slider & Diagrams */
.showcase-section {
  padding: 100px 0;
  background-color: #FAF7F0; /* Cream background */
  border-top: 1px solid var(--color-border);
}

.slider-wrapper {
  max-width: 800px;
  margin: 0 auto 64px;
}

.slider-instructions {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-weight: 600;
}

/* Before and After slider widget styles */
.before-after-container {
  position: relative;
  width: 100%;
  height: 500px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-accent-gold);
  background-color: var(--color-primary-dark);
}

.before-after-container .img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
}

/* Real Patient face backgrounds for before/after comparison */
.background-img {
  background-image: url('assets/slider_after.jpg');
  z-index: 1;
}

.foreground-img {
  background-image: url('assets/slider_before.jpg');
  z-index: 2;
  width: 50%; /* Adjusted dynamically by JS */
}

/* Overlays containing the vector lines */
.vector-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Make sure vector SVGs scale properly */
.vector-svg {
  width: 100%;
  height: 100%;
}

.status-label {
  position: absolute;
  bottom: 20px;
  background-color: rgba(6, 31, 19, 0.85);
  border: 1px solid var(--color-accent-gold);
  color: var(--color-text-light);
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  z-index: 4;
}

.before-label {
  left: 20px;
}

.after-label {
  right: 20px;
}

/* Handle element */
.slider-handle {
  position: absolute;
  top: 0;
  left: 50%; /* Adjusted by JS */
  width: 4px;
  height: 100%;
  background-color: var(--color-accent-gold);
  z-index: 5;
  cursor: ew-resize;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.handle-line {
  width: 2px;
  height: 50%;
  background-color: var(--color-accent-gold);
}

.handle-button {
  width: 44px;
  height: 44px;
  background-color: var(--color-accent-gold);
  border: 2px solid var(--color-primary-dark);
  border-radius: 50%;
  color: var(--color-primary-dark);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  font-size: 0.9rem;
}

/* Diagram Cards Grid below comparison */
.diagram-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.diagram-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 40px 32px;
  border-radius: 4px;
  position: relative;
  transition: var(--transition);
}

.diagram-card:hover {
  border-color: var(--color-accent-gold);
  box-shadow: var(--shadow-md);
}

.diagram-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: rgba(228, 179, 79, 0.18);
  font-weight: 700;
  position: absolute;
  top: 20px;
  right: 24px;
  line-height: 1;
}

.diagram-card h5 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary);
  margin-bottom: 16px;
  font-weight: 600;
}

.diagram-card p {
  font-size: 0.85rem;
  color: var(--color-text-dark);
  line-height: 1.6;
}

/* Authority Section */
.authority-section {
  position: relative;
  padding: 100px 0;
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  overflow: hidden;
  border-top: 1px solid var(--color-accent-gold);
  border-bottom: 1px solid var(--color-accent-gold);
}

.oriental-bamboo-bg {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 400px;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 200'%3E%3Cpath d='M20,200 L40,0 M15,180 Q35,160 50,140 M30,120 Q50,90 60,60 M25,60 Q45,30 35,0 M30,150 Q50,130 65,120' stroke='%23FAF7F0' stroke-width='1.2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: cover;
  pointer-events: none;
}

.authority-container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.authority-image-container {
  display: flex;
  justify-content: center;
}

.framed-image {
  position: relative;
  padding: 12px;
  background-color: var(--color-primary);
  border: 1px solid rgba(228, 179, 79, 0.4);
  box-shadow: var(--shadow-lg);
  border-radius: 4px;
}

.auth-img {
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: 2px;
  display: block;
}

.oriental-border {
  position: absolute;
  inset: 6px;
  border: 1px solid var(--color-accent-gold);
  pointer-events: none;
  opacity: 0.5;
}

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

.authority-name {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--color-accent-gold);
  font-weight: 600;
  margin-bottom: 12px;
}

.authority-bio-highlight {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 32px;
  line-height: 1.5;
}

.credential-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.credential-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.cred-icon {
  font-size: 1.25rem;
  color: var(--color-accent-gold);
  background-color: rgba(228, 179, 79, 0.1);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(228, 179, 79, 0.25);
}

.cred-text {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.cred-text strong {
  color: var(--color-accent-gold);
}

.quote-box {
  border-left: 3px solid var(--color-accent-gold);
  padding-left: 20px;
  background-color: rgba(255, 255, 255, 0.03);
  padding: 16px 20px;
  border-radius: 0 4px 4px 0;
}

.auth-quote {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-light);
  opacity: 0.85;
}

/* Transformation CTA Strip */
.transformation-strip {
  background-color: var(--color-accent-gold);
  padding: 64px 0;
  color: var(--color-primary-dark);
}

.transformation-strip h2 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.transformation-strip .lead {
  max-width: 800px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.5;
}

.strip-buttons {
  display: flex;
  justify-content: center;
}

.transformation-strip .btn-gold {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-light);
  box-shadow: 0 4px 15px rgba(11, 44, 27, 0.25);
}

.transformation-strip .btn-gold:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-accent-gold);
}

/* Program Section */
.program-section {
  padding: 100px 0;
  background-color: var(--color-bg-light);
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 56px;
}

.module-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition);
}

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

.module-header {
  background-color: var(--color-primary);
  padding: 24px;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 2px solid var(--color-accent-gold);
}

.module-num {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-gold);
  opacity: 0.9;
}

.module-header h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.module-body {
  padding: 24px;
}

.module-body ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.module-body li {
  font-size: 0.88rem;
  color: var(--color-text-dark);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  line-height: 1.5;
}

.module-body li i {
  color: var(--color-accent-gold);
  font-size: 1rem;
  margin-top: 2px;
}

/* Bonus Box */
.bonus-box {
  background-color: rgba(228, 179, 79, 0.08);
  border: 1px solid var(--color-accent-gold);
  border-radius: 4px;
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: center;
}

.bonus-icon {
  font-size: 2.5rem;
  color: var(--color-accent-gold);
  background-color: var(--color-primary);
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-accent-gold);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.bonus-content h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
  font-weight: 700;
}

.bonus-content p {
  font-size: 0.9rem;
  color: var(--color-text-dark);
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
  padding: 100px 0;
  background-color: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
}

.faq-accordion-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-light);
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--color-accent-gold);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  cursor: pointer;
  outline: none;
}

.question-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  padding-right: 16px;
}

.faq-toggle-icon {
  font-size: 0.9rem;
  color: var(--color-accent-gold);
  transition: var(--transition);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

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

.faq-answer p {
  padding: 0 24px 24px;
  font-size: 0.92rem;
  color: var(--color-text-dark);
  line-height: 1.6;
}

.faq-image-container {
  margin: 0 auto 24px;
  width: calc(100% - 48px);
  max-width: 440px; /* beautifully proportioned layout */
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(228, 179, 79, 0.25);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-primary-dark);
}

.faq-illustrative-img {
  width: 100%;
  aspect-ratio: 682 / 1024; /* aspect-ratio match for visual assets */
  height: auto;
  display: block;
  object-fit: contain;
}

/* Final Conversion Section */
.final-cta-section {
  padding: 120px 0;
  background-color: var(--color-primary-dark);
  position: relative;
  background-image: 
    radial-gradient(circle at center, rgba(228, 179, 79, 0.06) 0%, transparent 70%);
}

.oriental-frame-small {
  max-width: 700px;
  margin: 0 auto;
  border: 2px solid var(--color-accent-gold);
  padding: 48px;
  border-radius: 4px;
  position: relative;
  background-color: rgba(11, 44, 27, 0.4);
  backdrop-filter: blur(4px);
}

/* Chinese-style double border for luxury look */
.oriental-frame-small::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(228, 179, 79, 0.3);
  pointer-events: none;
}

.cta-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--color-accent-gold);
  font-weight: 600;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 36px;
  font-weight: 300;
  line-height: 1.6;
}

/* Footer styling */
.footer {
  background-color: #04140C;
  color: var(--color-text-muted);
  padding: 48px 0;
  border-top: 1px solid rgba(228, 179, 79, 0.15);
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-logo {
  max-width: 540px; /* 3x larger logo at the bottom */
  width: 100%;
  margin-bottom: 12px;
  filter: drop-shadow(0 2px 10px rgba(228, 179, 79, 0.25));
}

.footer-logo-img {
  width: 100%;
  height: auto;
}

.copyright {
  font-size: 0.8rem;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent-gold);
}

/* Scientific / Anatomical Basis Illustration */
.anatomy-illustration-wrapper {
  margin-top: 80px;
  text-align: center;
  border-top: 1px dashed var(--color-border);
  padding-top: 60px;
}

.anatomy-science-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.anatomy-science-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.anatomy-card-primary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.anatomy-img-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: 16px;
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition);
}

.anatomy-img-card:hover {
  border-color: var(--color-accent-gold);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.anatomy-img-container {
  width: 100%;
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.anatomy-science-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: var(--transition);
}

.anatomy-caption {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 16px 8px 8px;
  text-align: center;
  line-height: 1.4;
  border-top: 1px solid rgba(11, 44, 27, 0.05);
  width: 100%;
  margin-top: 16px;
}

/* Real Clinical Cases Gallery (Continuous Carousel - Section 2) */
.cases-gallery-wrapper {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  overflow: hidden;
  padding: 60px 0 80px;
  background-color: var(--color-primary-dark);
  border-top: 1px solid rgba(228, 179, 79, 0.4);
  border-bottom: 1px solid rgba(228, 179, 79, 0.4);
}

.cases-gallery-wrapper .gallery-title {
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.cases-gallery-wrapper .gallery-subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  margin-bottom: 40px;
}

.cases-carousel-container {
  width: 100%;
  overflow: hidden;
  display: flex;
}

.cases-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: scroll-infinite 30s linear infinite;
}

.cases-track:hover {
  animation-play-state: paused;
}

.cases-track .case-card {
  flex: 0 0 350px;
  background-color: var(--color-primary);
  border: 1px solid rgba(228, 179, 79, 0.15);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.cases-track .case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent-gold);
}

.cases-track .case-img-container {
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  background-color: #061F13;
}

.cases-track .case-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.cases-track .case-card:hover .case-img {
  transform: scale(1.04);
}

.cases-track .case-overlay {
  background-color: var(--color-primary-dark);
  border-top: 2px solid var(--color-accent-gold);
  padding: 16px;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

@keyframes scroll-infinite {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* Autoplay Full-Width Technique Video Showcase */
.video-showcase-section {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  overflow: hidden;
  background-color: var(--color-primary-dark);
  border-top: 1px solid rgba(228, 179, 79, 0.3);
  border-bottom: 1px solid rgba(228, 179, 79, 0.3);
}

.video-full-bleed-container {
  width: 100%;
  height: 540px; /* height 540px as requested by user */
  position: relative;
}

.showcase-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  .video-full-bleed-container {
    height: 320px; /* adjusted height on mobile for perfect view */
  }
}

/* Shimmer Animation on Buttons */
.btn-shimmer {
  position: relative;
  overflow: hidden;
}

.btn-shimmer::after {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 50%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-20deg);
  animation: btn-shine 3.5s infinite ease-in-out;
}

@keyframes btn-shine {
  0% {
    left: -150%;
  }
  20% {
    left: 150%;
  }
  100% {
    left: 150%;
  }
}

/* Dynamic Mouse Gradient Glow Backdrop */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
  mix-blend-mode: screen;
  opacity: 0.15;
  background: radial-gradient(
    400px circle at var(--mouse-x, -500px) var(--mouse-y, -500px),
    rgba(228, 179, 79, 0.18),
    rgba(11, 44, 27, 0.08) 60%,
    transparent 100%
  );
  transition: opacity 0.3s ease;
}

/* Animations */
@keyframes float-slow {
  0% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-10px);
  }
}

/* RESPONSIVE LAYOUTS (MOBILE OPTIMIZATION) */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-content {
    align-items: center;
    text-align: center;
  }
  
  .hero-badge, .hero-metrics, .hero-buttons {
    justify-content: center;
  }
  
  .shanghai-tag {
    left: 0;
  }
  
  .speaker-tag {
    right: 0;
  }
  
  .authority-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .intro-card-primary {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .pillars-grid, .diagram-grid, .modules-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .cases-track .case-card {
    flex: 0 0 300px;
  }

  .anatomy-card-primary {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 768px) {
  /* Navigation mobile behavior overlay */
  .main-header {
    background-color: var(--color-primary-dark); /* Solid dark green on mobile menu as well */
    box-shadow: var(--shadow-sm);
    position: fixed;
    padding: 16px 0;
    border-bottom: 1px solid rgba(228, 179, 79, 0.15);
    z-index: 1050;
  }
  
  .header-container {
    padding: 0 16px; /* Reduced padding on mobile header to fit all elements */
    gap: 12px;
  }
  
  .logo-wrapper {
    max-width: 175px; /* Enlarged mobile logo size for better branding readability */
  }
  
  .hero-title {
    font-size: 1.8rem !important; /* Smaller size on mobile to prevent cutting off text */
    line-height: 1.3;
  }
  
  .hero-metrics {
    flex-direction: column !important;
    gap: 16px !important;
    align-items: center !important;
    width: 100% !important;
  }
  
  .metric-divider {
    display: none !important;
  }
  
  .hero-image-wrapper {
    position: relative;
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  
  .floating-tag {
    position: static !important; /* Stack vertically to prevent cutting off on mobile edges */
    transform: none !important;
    width: 100% !important;
    max-width: 320px !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
  }
  
  .mobile-menu-toggle {
    display: block;
    z-index: 1060; /* Raised above menu items */
    color: #FFFFFF; /* High contrast icon */
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-primary-dark);
    flex-direction: column;
    padding: 100px 40px 40px;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 1040;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-menu a {
    color: var(--color-text-light);
    font-size: 1.1rem;
    padding: 10px 0;
  }
  
  .nav-menu a:hover {
    color: var(--color-accent-gold);
  }
  
  .header-actions .btn-header {
    display: none; /* Hide top CTA on mobile navbar to avoid clutter */
  }
  
  .nav-menu .btn-mobile-nav {
    display: block !important;
    margin-top: 20px;
  }
  
  .hero-section {
    padding-top: 120px;
  }
  
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .philosophy-divider {
    width: 50%;
    height: 1px;
    margin: 0 auto;
  }
  
  .before-after-container {
    height: 350px;
  }
  
  .bonus-box {
    flex-direction: column;
    text-align: center;
  }
  
  .oriental-frame-small {
    padding: 24px;
  }
  
  .cta-title {
    font-size: 1.6rem;
  }
  
  .cases-track .case-card {
    flex: 0 0 260px;
  }
}