/* Lash Training Kit — B2B Design System */
/* LashPlus Corporation Limited */

:root {
  --bg: #fafafa;
  --text: #1a1a1a;
  --text-secondary: #555;
  --subtle: #767676;
  --accent: #c44536;
  --accent-hover: #a8372b;
  --accent-light: rgba(196,69,54,.08);
  --card: #fff;
  --border: #e8e8e8;
  --gold: #b8860b;
  --surface: #f5f0eb;
  --surface-2: #faf7f2;
  --dark: #1a1a1a;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.5px;
  color: var(--text);
  text-decoration: none;
}
.logo span {
  color: var(--accent);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  transition: all .2s ease;
  font-family: var(--font);
  font-size: 15px;
  padding: 12px 28px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(196,69,54,.3);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
}
.btn-wa {
  background: #25D366;
  color: #fff;
  font-size: 16px;
  padding: 14px 36px;
}
.btn-wa:hover {
  background: #1fb855;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(37,211,102,.3);
}
.btn-wa svg {
  width: 20px;
  height: 20px;
}
.btn-sm {
  font-size: 14px;
  padding: 8px 20px;
}

/* ── Hero ── */
.hero {
  padding: 100px 0 72px;
  text-align: center;
  background: linear-gradient(170deg, #faf7f2 0%, #f5f0eb 40%, #fafafa 100%);
}
.hero .badge {
  display: inline-block;
  background: #fff;
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: .8px;
  text-transform: uppercase;
  border: 1px solid rgba(184,134,11,.15);
  box-shadow: var(--shadow);
}
.hero h1 {
  font-size: clamp(32px, 5.5vw, 50px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.hero .subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── 4-in-1 Training Scenarios ── */
.scenarios {
  padding: 80px 0;
}
.scenarios h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}
.section-sub {
  color: var(--subtle);
  margin-bottom: 48px;
  font-size: 16px;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.scenario-card {
  background: #fff;
  padding: 36px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform .2s ease, box-shadow .2s ease;
}
.scenario-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.sc-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.sc-icon.s1 { background: #fef2f2; color: var(--accent); }
.sc-icon.s2 { background: #fff7ed; color: #d97706; }
.sc-icon.s3 { background: #eff6ff; color: #2563eb; }
.sc-icon.s4 { background: #f0fdf4; color: #16a34a; }
.scenario-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.scenario-card p {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Technical Specs ── */
.specs {
  padding: 72px 0;
  background: var(--surface);
  border-radius: 20px;
  margin: 0 auto 72px;
  max-width: 1080px;
}
.specs h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: -.5px;
}
.specs-table {
  max-width: 760px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.specs-table .row {
  display: flex;
  border-bottom: 1px solid var(--border);
}
.specs-table .row:last-child {
  border-bottom: none;
}
.specs-table .row > div {
  padding: 15px 24px;
  flex: 1;
  font-size: 14px;
}
.specs-table .row > div:first-child {
  font-weight: 600;
  background: var(--surface-2);
  max-width: 240px;
  color: var(--text);
}

/* ── Kit Contents ── */
.kit-contents {
  padding: 80px 0;
}
.kit-contents h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}
.kit-contents .section-sub {
  text-align: center;
}
.kit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 20px;
}
.kit-item {
  background: #fff;
  padding: 28px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}
.kit-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(196,69,54,.3) 100%);
  opacity: 0;
  transition: opacity .25s ease;
  border-radius: var(--radius) var(--radius) 0 0;
}
.kit-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border);
}
.kit-item:hover::before {
  opacity: 1;
}
.kit-item .item-icon {
  width: 62px;
  height: 62px;
  background: var(--surface-2);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  color: var(--accent);
}
.kit-item h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.35;
}
.kit-item .qty {
  font-size: 12.5px;
  color: var(--subtle);
}

/* ── OEM Process ── */
.oem-process {
  padding: 80px 0;
  background: var(--surface);
  border-radius: 20px;
  margin: 0 auto 72px;
  max-width: 1080px;
}
.oem-process h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}
.oem-process .section-sub {
  text-align: center;
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.step {
  background: #fff;
  padding: 32px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform .2s ease;
  position: relative;
}
.step:hover {
  transform: translateY(-3px);
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.step h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
}
.step p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── Volume Tiers ── */
.tiers {
  padding: 80px 0;
}
.tiers h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}
.tiers .section-sub {
  text-align: center;
}
.tier-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tier-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: transform .2s ease, box-shadow .2s ease;
}
.tier-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.tier-card.highlighted {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-md);
  background: linear-gradient(180deg, #fff 0%, rgba(196,69,54,.03) 100%);
}
.tier-header {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.tier-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.tier-card.highlighted .tier-badge {
  background: var(--accent);
  color: #fff;
}
.tier-qty {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1;
  color: var(--accent);
}
.tier-unit {
  font-size: 13px;
  color: var(--subtle);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.tier-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tier-details li {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
  padding-left: 4px;
}
.tier-details li strong {
  color: var(--text);
  font-weight: 600;
}

/* ── Why Us ── */
.why-us {
  padding: 72px 0;
  background: var(--surface);
  border-radius: 20px;
  margin: 0 auto 72px;
  max-width: 1080px;
}
.why-us h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -.5px;
}
.why-us .section-sub {
  text-align: center;
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.why-card {
  background: #fff;
  padding: 32px 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .2s ease;
}
.why-card:hover {
  transform: translateY(-2px);
}
.why-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.w-icon-svg {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--surface-2);
  padding: 9px;
  flex-shrink: 0;
  color: var(--accent);
}
.why-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── CTA Section ── */
.cta-section {
  padding: 88px 24px;
  text-align: center;
  background: linear-gradient(165deg, var(--dark) 0%, #2d2d2d 100%);
  border-radius: 20px;
  margin: 0 auto 48px;
  max-width: 1080px;
}
.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -.5px;
}
.cta-section p {
  color: rgba(255,255,255,.7);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  font-size: 16px;
}
.contact-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}
.contact-card {
  background: rgba(255,255,255,.08);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-size: 14px;
  transition: background .2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}
.contact-card:hover {
  background: rgba(255,255,255,.15);
}

/* ── FAQ ── */
.faq {
  padding: 64px 0 96px;
}
.faq h2 {
  font-size: 30px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: -.5px;
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-item summary {
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  color: var(--subtle);
  transition: transform .25s ease, color .25s ease;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}
.faq-item[open] summary::after {
  content: "−";
  color: var(--accent);
}
.faq-item .answer {
  font-size: 14.5px;
  color: var(--text-secondary);
  padding-top: 14px;
  line-height: 1.75;
  max-width: 660px;
}

/* ── Footer ── */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
footer .company {
  font-size: 13px;
  color: var(--subtle);
}
footer .links {
  display: flex;
  gap: 24px;
  font-size: 13px;
}
footer .links a {
  color: var(--subtle);
  text-decoration: none;
  transition: color .15s ease;
}
footer .links a:hover {
  color: var(--text);
}

/* ── Mobile Sticky CTA ── */
.mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #fff;
  padding: 12px 20px;
  box-shadow: 0 -2px 12px rgba(0,0,0,.1);
  border-top: 1px solid var(--border);
}
.mobile-cta .btn-wa {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 15px;
}

/* ── Scroll Animations ── */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease-out, transform .6s ease-out;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .scenario-card {
    padding: 28px 24px;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .tier-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .why-grid {
    grid-template-columns: 1fr;
  }
  .kit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .hero {
    padding: 60px 0 48px;
  }
  .hero h1 {
    font-size: 28px;
  }
  .hero .subtitle {
    font-size: 16px;
  }
  .mobile-cta {
    display: block;
  }
  footer .container {
    flex-direction: column;
    text-align: center;
  }
  .specs, .oem-process, .why-us, .cta-section {
    border-radius: 0;
    margin-left: -24px;
    margin-right: -24px;
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (max-width: 480px) {
  .process-steps {
    grid-template-columns: 1fr;
  }
  .tier-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .tier-card {
    padding: 24px 16px;
  }
  .tier-qty {
    font-size: 30px;
  }
  .kit-grid {
    grid-template-columns: 1fr 1fr;
  }
  .kit-item {
    padding: 20px 16px;
  }
  .specs-table .row > div:first-child {
    max-width: 140px;
    font-size: 13px;
  }
  .specs-table .row > div:last-child {
    font-size: 13px;
  }
}