@import url('https://fonts.googleapis.com/css2?family=Cormorant%20Garamond:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================================
   SUZHOU CHANGLIAN TEXTILE — PREMIUM PRODUCTION STYLESHEET
   Corporate Premium | B2B Textile Manufacturer
   Version: 2.0 | Built to $25,000 Agency Standard
   ============================================================ */

/* ============================================================
   1. CUSTOM PROPERTIES
   ============================================================ */

:root {
  --primary: #1B2A4A;
  --primary-rgb: 27, 42, 74;
  --primary-light: color-mix(in srgb, #1B2A4A 15%, white);
  --primary-medium: color-mix(in srgb, #1B2A4A 40%, white);
  --primary-dark: color-mix(in srgb, #1B2A4A, black 20%);
  --secondary: #C41E3A;
  --secondary-light: color-mix(in srgb, #C41E3A 8%, white);
  --secondary-dark: color-mix(in srgb, #C41E3A, black 15%);
  --accent: #F5ECD7;
  --accent-light: color-mix(in srgb, #F5ECD7 15%, white);
  --accent-warm: color-mix(in srgb, #F5ECD7 60%, white);
  --surface: #ffffff;
  --surface-elevated: #f8f9fa;
  --surface-subtle: #f4f6f8;
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --text-on-dark: #f7fafc;
  --text-on-primary: #ffffff;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;

  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
  --shadow-colored: 0 8px 32px rgba(var(--primary-rgb), 0.2);
  --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.06);

  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  --nav-height: 72px;
  --section-pad: clamp(4rem, 8vw, 7rem);
  --container-pad: clamp(1rem, 4vw, 3rem);
}

/* ============================================================
   2. RESET + BASE
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
  tab-size: 4;
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  background-color: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
  hyphens: auto;
}

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

a:hover {
  color: var(--secondary);
}

a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  padding: 0;
}

button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

::-moz-selection {
  background-color: var(--primary);
  color: var(--text-on-primary);
}

hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2rem 0;
}

/* ============================================================
   3. TYPOGRAPHY SCALE
   ============================================================ */

h1,
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-primary);
}

h2,
.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
}

h3,
.display-3 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

h4,
.display-4 {
  font-family: var(--font-body);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-primary);
}

h5 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

h6 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

.text-lg {
  font-size: 1.2rem;
  line-height: 1.6;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.5;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.lead {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--text-secondary);
  font-weight: 400;
}

.overline {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
  font-family: var(--font-body);
  display: block;
  margin-bottom: 0.75rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.section-label::before,
.section-label::after {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background-color: var(--secondary);
}

/* ============================================================
   4. LAYOUT
   ============================================================ */

.container {
  max-width: 1200px;
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container-wide {
  max-width: 1400px;
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container-narrow {
  max-width: 800px;
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--section-pad);
  position: relative;
}

.section-sm {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section-dark {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, color-mix(in srgb, var(--primary) 85%, var(--secondary)) 100%);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}

.section-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(196, 30, 58, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark h5,
.section-dark p {
  color: var(--text-on-dark);
}

.section-dark p {
  color: rgba(247, 250, 252, 0.8);
}

.section-accent {
  background: linear-gradient(
    160deg,
    var(--primary-light) 0%,
    color-mix(in srgb, var(--accent) 30%, white) 50%,
    var(--primary-light) 100%
  );
  position: relative;
  overflow: hidden;
}

.section-accent::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231B2A4A' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.6;
}

.section-surface {
  background-color: var(--surface-elevated);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

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

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }
.gap-6 { gap: 3rem; }

/* ============================================================
   5. NAVIGATION
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition:
    background-color var(--transition),
    box-shadow var(--transition),
    backdrop-filter var(--transition);
}

.nav::before {
  content: "";
  position: absolute;
  inset: 0;
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: backdrop-filter var(--transition), -webkit-backdrop-filter var(--transition);
  pointer-events: none;
}

.nav.scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 1px 0 var(--border-color), var(--shadow-md);
}

.nav.scrolled::before {
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.nav.scrolled .nav-logo {
  color: var(--primary);
}

.nav.scrolled .nav-link {
  color: var(--text-secondary);
}

.nav.scrolled .nav-link:hover {
  color: var(--primary);
}

.nav-inner {
  max-width: 1200px;
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-on-dark);
  letter-spacing: -0.01em;
  line-height: 1.1;
  transition: color var(--transition);
  flex-shrink: 0;
}

.nav-logo span {
  display: block;
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-body);
  opacity: 0.7;
  margin-top: 2px;
}

.nav.scrolled .nav-logo span {
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(247, 250, 252, 0.9);
  letter-spacing: 0.015em;
  position: relative;
  padding-block: 0.25rem;
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--secondary), color-mix(in srgb, var(--secondary) 60%, transparent));
  border-radius: var(--radius-full);
  transition:
    left var(--transition),
    right var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
  left: 0;
  right: 0;
}

.nav-link:hover {
  color: var(--text-on-dark);
}

.nav-link.active {
  color: var(--text-on-dark);
  font-weight: 600;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.nav-cta {
  padding: 0.55rem 1.4rem;
  background: var(--secondary);
  color: var(--text-on-primary);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition:
    background-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--secondary-dark);
  color: var(--text-on-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(196, 30, 58, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition);
  flex-shrink: 0;
}

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

.nav.scrolled .nav-toggle:hover {
  background-color: var(--surface-elevated);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--text-on-dark);
  border-radius: var(--radius-full);
  transition:
    transform var(--transition),
    opacity var(--transition),
    width var(--transition);
}

.nav.scrolled .nav-toggle span {
  background-color: var(--text-primary);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.nav-mobile-overlay {
  display: none;
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  flex-direction: column;
  padding: 2rem var(--container-pad);
  gap: 0.5rem;
  border-top: 1px solid var(--border-color);
  overflow-y: auto;
  transform: translateY(-10px);
  opacity: 0;
  transition:
    opacity var(--transition),
    transform var(--transition);
}

.nav-mobile-overlay.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.nav-mobile-link {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color var(--transition);
  font-family: var(--font-display);
}

.nav-mobile-link:hover {
  color: var(--secondary);
}

.nav-mobile-cta {
  margin-top: 1.5rem;
  align-self: flex-start;
}

/* ============================================================
   6. HERO
   ============================================================ */

.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--primary-dark) 0%,
    var(--primary) 45%,
    color-mix(in srgb, var(--primary) 75%, var(--secondary)) 100%
  );
  padding-top: var(--nav-height);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 60% 50% at 75% 50%, rgba(245, 236, 215, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(196, 30, 58, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 30% 30% at 90% 10%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.04) 100%);
  clip-path: ellipse(55% 100% at 50% 100%);
  pointer-events: none;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(255, 255, 255, 0.012) 40px,
      rgba(255, 255, 255, 0.012) 41px
    );
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(245, 236, 215, 0.12);
  border: 1px solid rgba(245, 236, 215, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.75rem;
  backdrop-filter: blur(8px);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--secondary);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  color: var(--text-on-dark);
  margin-bottom: 1.5rem;
  max-width: 780px;
}

.hero-title .accent-word {
  background: linear-gradient(135deg, var(--accent) 0%, color-mix(in srgb, var(--accent) 70%, var(--secondary)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline;
}

.hero-title .highlight-word {
  color: var(--secondary);
  font-style: italic;
}

.hero-subtitle {
  font-size: 1.2rem;
  line-height: 1.65;
  color: rgba(247, 250, 252, 0.78);
  max-width: 580px;
  margin-bottom: 2.5rem;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  letter-spacing: 0.01em;
  transition:
    background-color var(--transition),
    transform var(--transition-bounce),
    box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.hero-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.hero-cta:hover::before {
  opacity: 1;
}

.hero-cta-primary {
  background: var(--secondary);
  color: var(--text-on-primary);
  box-shadow: 0 4px 20px rgba(196, 30, 58, 0.4);
}

.hero-cta-primary:hover {
  background: var(--secondary-dark);
  color: var(--text-on-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(196, 30, 58, 0.5);
}

.hero-cta-outline {
  background: transparent;
  color: var(--text-on-dark);
  border: 2px solid rgba(247, 250, 252, 0.3);
}

.hero-cta-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(247, 250, 252, 0.6);
  color: var(--text-on-dark);
  transform: translateY(-2px);
}

.hero-cta-arrow {
  width: 18px;
  height: 18px;
  transition: transform var(--transition);
}

.hero-cta:hover .hero-cta-arrow {
  transform: translateX(3px);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
}

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

.hero-stat-number {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--text-on-dark);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: rgba(247, 250, 252, 0.6);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.15);
  flex-shrink: 0;
}

/* ============================================================
   7. CARDS
   ============================================================ */

.card {
  background: var(--surface