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

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: #111827;
  background: #ffffff;
  line-height: 1.6;
}

.container {
  max-width: 75rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
#header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #e5e7eb;
}

.notice {
  text-align: center;
  padding: 0.5rem;
  font-size: 13.5px;

  color: #1e40af;
  background: #eff6ff;
}

.notice > a {
  color: inherit;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;

  cursor: pointer;
}

.logo-icon {
  width: 2rem;
  aspect-ratio: 1/1;
  background: #2563eb;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.25rem;
  color: #111827;
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: #6b7280;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.nav-link:hover {
  color: #111827;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.theme-toggle {
  background: transparent;
  border: none;
  outline: none;

  font-size: 1.15rem;
}

/* Buttons */
.btn {
  padding: 0.625rem 1.5rem;
  border-radius: 0.325rem;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  display: inline-block;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: #2563eb;
  color: white;
}

.btn-primary:hover {
  background: #1d4ed8;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
}

/* Hero */
.hero {
  background: linear-gradient(to bottom, #ffffff, #f9fafb);
  padding: 6rem 1.5rem 8rem;
}

.hero-content {
  text-align: center;
  max-width: 56rem;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.highlight {
  position: relative;
  display: inline-block;
}

.highlight::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 12px;
  background: #10b981;
  border-radius: 4px;
  opacity: 0.5;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: #6b7280;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.hero__btns {
  display: flex;
  gap: 1.75rem;
  max-width: 28rem;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.hero__btns .btn-primary {
  height: 3rem;
  white-space: nowrap;
}

.watch-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  color: #6b7280;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: color 0.2s;
  font-family: inherit;

  text-decoration: none;
}

.watch-btn:hover {
  color: #111827;
}

.play-icon {
  width: 2rem;
  aspect-ratio: 1/1;
  border-radius: 50%;
  background: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2563eb;
  font-size: 0.75rem;
  padding-left: 4px;
}

.watch-btn:hover .play-icon {
  background: rgba(37, 99, 235, 0.1);
}

.trust-indicators {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #9ca3af;
}

.check-icon {
  width: 20px;
  aspect-ratio: 1/1;
  color: #10b981;
}

/* Sections */
.section {
  padding: 6rem 1.5rem;
}

.section-white {
  background: #ffffff;
}

.section-gray {
  background: #f9fafb;
}

.section-blue {
  background: linear-gradient(to bottom right, #2563eb, #1d4ed8);
  color: white;
}

.section-dark {
  background: #111827;
  color: white;
}

.video__box {
  display: flex;
  justify-content: center;
}

.video__box video {
  width: 65%;
  height: 100%;
  object-fit: cover;

  border-radius: 0.325rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: #6b7280;
  max-width: 42rem;
  margin: 0 auto;
}

.section-blue .section-subtitle,
.section-dark .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

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

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Cards */
.card {
  padding: 1.5rem;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  transition: all 0.2s;
}

.card:hover {
  border-color: #d1d5db;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.card-icon {
  width: 3rem;
  aspect-ratio: 1/1;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.card-icon-red {
  background: #fef2f2;
  color: #ef4444;
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-text {
  color: #6b7280;
  line-height: 1.6;
}

/* Feature Cards */
.feature-card {
  padding: 2rem;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  transition: all 0.2s;
}

.feature-card:hover {
  border-color: #2563eb;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.05);
}

.feature-icon {
  width: 3.5rem;
  aspect-ratio: 1/1;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.feature-text {
  color: #6b7280;
  line-height: 1.6;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.step {
  position: relative;
}

.step-number {
  font-size: 3.75rem;
  font-weight: 900;
  color: #e4e5e9;
  margin-bottom: 1rem;
}

.step-icon {
  width: 4rem;
  aspect-ratio: 1/1;
  background: rgba(16, 185, 129, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.step-text {
  color: #6b7280;
  line-height: 1.6;
}

/* Brands */
.brands {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.brand-tag {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.875rem;
}

.brand-tag-green {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.brand-tag-gray {
  background: #f3f4f6;
  color: #6b7280;
}

.info-box {
  margin-top: 3rem;
  padding: 1.5rem;
  background: #eff6ff;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 12px;
  text-align: center;
}

.info-box p {
  color: #1e40af;
  line-height: 1.6;
}

.sectioin-gray__disclaimer {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: #9ca3af;
}

/* Pricing */
#pricing .container {
  padding: 0rem 0.5rem;
}

.pricing-card {
  max-width: 28rem;
  margin: 0 auto;
  background: linear-gradient(to bottom right, #2563eb, #1d4ed8);
  border-radius: 16px;
  padding: 2rem;
  color: white;
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.2);
}

.pricing-header {
  text-align: center;
  margin-bottom: 2rem;
}

.pricing-header h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.price {
  font-size: 3rem;
  font-weight: 900;
}

.price-small {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
}

.features-list {
  list-style: none;
  margin-bottom: 2rem;
}

.features-list li {
  display: flex;
  align-items: start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.pricing-card .btn {
  width: 100%;
  background: white;
  color: #2563eb;
  padding: 1rem;
}

.pricing-card .btn:hover {
  background: #f0f9ff;
}

.pricing-note {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.pricing-info {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: #6b7280;
}

/* Principles */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.principle {
  display: flex;
  align-items: start;
  gap: 1rem;
}

.principle-icon {
  width: 3rem;
  aspect-ratio: 1/1;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.principle-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.principle-text {
  color: #6b7280;
  line-height: 1.6;
}

.quote {
  max-width: 48rem;
  margin: 4rem auto 0;
  padding: 2rem;
  background: white;
  border-left: 4px solid #2563eb;
  border-radius: 0 12px 12px 0;
}

.quote-text {
  font-size: 1.25rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.quote-author {
  font-size: 0.875rem;
  color: #6b7280;
  font-weight: 600;
}

/* FAQ */
.faq {
  max-width: 48rem;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item:hover {
  border-color: #d1d5db;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1.125rem;
  font-weight: 600;
  color: #111827;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.2s;
}

.faq-question:hover {
  background: #f9fafb;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: #6b7280;
  line-height: 1.6;
  display: none;
}

.faq-answer ul {
  margin-block: 0.75rem;
  list-style: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  transition: transform 0.2s;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.contact {
  text-align: center;
  margin-top: 3rem;
  color: #6b7280;
}

.contact a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 500;
}

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

/* Footer */
footer {
  background: #111827;
  color: white;
  padding: 4rem 1.5rem;
}

.footer-brand .logo-text {
  color: #e5e7eb;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: #9ca3af;
  line-height: 1.6;
  max-width: 24rem;
}

.footer-section h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #9ca3af;
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid #374151;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: #9ca3af;
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1.15rem;
}

.social-links a {
  color: #9ca3af;
  transition: color 0.2s;
}

.social-links a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 56.25rem) {
  .video__box video {
    width: 80%;
  }
}

@media (max-width: 48rem) {
  .notice {
    font-size: 13px;
  }

  .nav {
    display: none;
  }

  .header-cta .btn-primary {
    display: none;
  }

  .hero__btns {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

  .hero__btns .btn-primary {
    width: 100%;
  }

  .trust-indicators {
    flex-direction: column;
    align-items: center;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 31.25rem) {
  .video__box video {
    width: 90%;
  }
}

/* =========================
   Dark Mode
========================= */

body.dark {
  background: #0b1220;
  color: #e5e7eb;
}

/* Header */
body.dark #header {
  background: rgba(11, 18, 32, 0.85);
  border-bottom: 1px solid #1f2937;
}

body.dark .notice {
  color: #fff;
  background: #142344;
}

/* Navigation & text */
body.dark .logo-text,
body.dark .nav-link,
body.dark .section-title,
body.dark .faq-question {
  color: #e5e7eb;
}

body.dark .nav-link:hover {
  color: #ffffff;
}

body.dark .section-subtitle,
body.dark .card-text,
body.dark .feature-text,
body.dark .step-text,
body.dark .principle-text,
body.dark .pricing-info,
body.dark .contact,
body.dark .footer-links a,
body.dark .footer-brand p {
  color: #9ca3af;
}

/* Hero */
body.dark .hero {
  background: linear-gradient(to bottom, #0b1220, #111827);
}

body.dark .hero-subtitle {
  color: #9ca3af;
}

body.dark .highlight::after {
  background: rgba(16, 185, 129, 0.6);
}

/* Buttons */
body.dark .btn-primary {
  background: #3b82f6;
}

body.dark .btn-primary:hover {
  background: #2563eb;
}

body.dark .btn-secondary {
  background: #10b981;
}

body.dark .btn-secondary:hover {
  background: #059669;
}

/* Watch button */
body.dark .watch-btn {
  color: #9ca3af;
}

body.dark .watch-btn:hover {
  color: #ffffff;
}

body.dark .play-icon {
  background: #020617;
}

/* Inputs */
body.dark .email-input {
  background: #020617;
  border-color: #1f2937;
  color: #e5e7eb;
}

body.dark .email-input::placeholder {
  color: #6b7280;
}

/* Sections */
body.dark .section-white {
  background: #0b1220;
}

body.dark .section-gray {
  background: #111827;
}

/* Cards */
body.dark .card,
body.dark .feature-card,
body.dark .faq-item,
body.dark .quote {
  background: #0f172a;
  border-color: #1f2937;
}

body.dark .card:hover,
body.dark .feature-card:hover {
  border-color: #374151;
}

/* Icons */
body.dark .card-icon-red {
  background: rgba(239, 68, 68, 0.15);
}

/* Steps */
body.dark .step-number {
  color: #1f2937;
}

/* Brands */
body.dark .brand-tag-gray {
  background: #020617;
  color: #9ca3af;
}

/* Info box */
body.dark .info-box {
  background: rgba(37, 99, 235, 0.15);
  border-color: rgba(37, 99, 235, 0.3);
}

body.dark .info-box p {
  color: #bfdbfe;
}

/* Pricing */
body.dark .pricing-card {
  background: linear-gradient(to bottom right, #1e3a8a, #1e40af);
}

body.dark .pricing-card .btn {
  background: #ffffff;
  color: #1e40af;
}

body.dark .pricing-card .btn:hover {
  background: #e0f2fe;
}

/* FAQ */
body.dark .faq-question:hover {
  background: #020617;
}

/* Footer */
body.dark footer {
  background: #020617;
}

body.dark .footer-bottom {
  border-top: 1px solid #1f2937;
}

body.dark .social-links a {
  color: #9ca3af;
}

body.dark .social-links a:hover {
  color: #ffffff;
}

/* Utilities Class */
.btn--hide {
  display: none;
}