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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: #0f172a;
  background: #f5f7fb;
}

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

a {
  color: #0f766e;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4 {
  color: #020617;
  margin-top: 0;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  background: rgba(15, 23, 42, 0.96);
  color: #e5e7eb;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.05em;
  color: #e5e7eb;
}

.main-nav {
  flex: 1;
  margin-left: 2rem;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: #e5e7eb;
  font-size: 0.92rem;
  padding: 0.25rem 0.5rem;
  border-radius: 999px;
}

.nav-links a:hover {
  background: rgba(148, 163, 184, 0.2);
  text-decoration: none;
}

.lang-switch {
  display: flex;
  gap: 0.5rem;
  font-size: 0.85rem;
  align-items: center;
}

.lang-switch .active {
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: #0d9488;
  color: #ecfeff;
}

.lang-switch .soon {
  opacity: 0.7;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: #e5e7eb;
  border-radius: 999px;
}

/* Hero */

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-home {
  background: radial-gradient(circle at top left, #0f766e 0, #0f172a 45%, #020617 100%);
  color: #e5e7eb;
}

.hero-sub {
  background: linear-gradient(120deg, #0f766e 0, #022c22 40%, #020617 100%);
  color: #e5e7eb;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-kicker {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #a5f3fc;
  margin-bottom: 0.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 2.5vw + 1rem, 2.7rem);
  margin-bottom: 0.75rem;
  color: #ecfeff;
}

.hero-text {
  font-size: 1rem;
  max-width: 36rem;
  color: #e2e8f0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: #bae6fd;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.65);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-visual img {
  max-width: 360px;
  border-radius: 1.5rem;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

/* Sections */

.section {
  padding: 3rem 0;
}

.section-light {
  background: #eef2ff;
}

.section-notice {
  background: #fef9c3;
}

.section-intro {
  max-width: 40rem;
  color: #4b5563;
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.section-header-row h2 {
  margin-bottom: 0.35rem;
}

/* Typography helpers */

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.section h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

/* Grids & cards */

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: #ffffff;
  border-radius: 1.25rem;
  padding: 1.25rem 1.35rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.card-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 0.75rem;
}

.small-card {
  padding: 1rem 1.1rem;
}

.notice-card {
  border-left: 4px solid #f97316;
}

.testimonials-grid .card,
.blog-card {
  display: flex;
  flex-direction: column;
}

.link-card {
  border-top: 3px solid #0f766e;
}

.usecase-card {
  background: #0f172a;
  color: #e5e7eb;
}

/* Steps */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.steps-horizontal {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.step-card {
  background: #ffffff;
  border-radius: 1.2rem;
  padding: 1.2rem 1.3rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  position: relative;
}

.step-number {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: #0f766e;
  color: #ecfeff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: #22c55e;
  border-color: #22c55e;
  color: #052e16;
  box-shadow: 0 10px 25px rgba(34, 197, 94, 0.45);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 35px rgba(34, 197, 94, 0.6);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border-color: #a5b4fc;
  color: #1e3a8a;
}

.btn-outline:hover {
  background: #e0e7ff;
  text-decoration: none;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  font-size: 0.92rem;
}

.link-arrow::after {
  content: "→";
  margin-left: 0.35rem;
}

/* Lists */

.bullet-list {
  padding-left: 1.1rem;
}

.bullet-list li {
  margin-bottom: 0.3rem;
}

.steps-list {
  padding-left: 1.4rem;
}

.steps-list li {
  margin-bottom: 0.4rem;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.checklist li {
  margin-bottom: 0.4rem;
}

.checklist label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.95rem;
}

.checklist-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.checklist-hint,
.tools-note,
.kb-note,
.blog-note,
.price-footnote,
.tools-note {
  font-size: 0.9rem;
  color: #6b7280;
}

/* FAQ */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border-radius: 0.9rem;
  background: #ffffff;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.07);
  overflow: hidden;
}

.section-light .faq-item {
  background: #e5e7eb;
}

.faq-item-header {
  width: 100%;
  text-align: left;
  padding: 0.85rem 1rem;
  background: transparent;
  border: none;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  padding: 0 1rem;
  transition: max-height 0.18s ease;
  font-size: 0.93rem;
}

.faq-item.open .faq-body {
  padding: 0 1rem 0.9rem;
  max-height: 400px;
}

/* Pricing */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.pricing-card {
  text-align: left;
}

.price-tag {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0.35rem 0;
}

.price-sub {
  font-size: 0.9rem;
  color: #6b7280;
  margin-bottom: 0.8rem;
}

.pricing-card-featured {
  border: 2px solid #22c55e;
  box-shadow: 0 18px 40px rgba(34, 197, 94, 0.45);
}

/* Blog */

.blog-grid {
  align-items: stretch;
}

.blog-card {
  padding: 0;
  overflow: hidden;
}

.blog-thumb {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.blog-card-body {
  padding: 1rem 1.1rem 1.2rem;
}

.blog-category {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #6b21a8;
  margin-bottom: 0.35rem;
}

.blog-excerpt {
  font-size: 0.95rem;
}

.blog-meta {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: #6b7280;
}

/* Testimonials */

.testimonial-card blockquote {
  font-style: italic;
  margin: 0;
}

.testimonial-card figcaption {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: #4b5563;
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

/* Layout helpers */

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.notice-text {
  margin: 0;
  font-size: 0.95rem;
  text-align: center;
  color: #713f12;
}

/* Contact form */

.contact-form {
  background: #ffffff;
  border-radius: 1.25rem;
  padding: 1.5rem 1.6rem;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.form-row {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.form-field {
  flex: 1;
  min-width: 220px;
}

label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid #cbd5f5;
  padding: 0.6rem 0.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  background: #f9fafb;
}

textarea {
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: #6b7280;
  margin: 0 0 1rem;
}

.contact-extra {
  margin-top: 1.5rem;
  font-size: 0.95rem;
}

/* Footer */

.site-footer {
  background: #020617;
  color: #9ca3af;
  padding-top: 2.5rem;
  margin-top: 3rem;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem;
  padding-bottom: 1.5rem;
}

.footer-col h4 {
  color: #e5e7eb;
  margin-top: 0;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: #cbd5f5;
  font-size: 0.9rem;
}

.footer-disclaimer-de,
.footer-disclaimer-en {
  font-size: 0.75rem;
}

.footer-meta {
  margin-top: 0.75rem;
}

.footer-bottom {
  border-top: 1px solid rgba(148, 163, 184, 0.4);
  padding: 0.75rem 0;
  font-size: 0.8rem;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* Responsive */

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-visual {
    order: -1;
  }
  .steps-grid,
  .steps-horizontal,
  .grid-3,
  .grid-4,
  .pricing-grid,
  .two-col {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer-main {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: #020617;
    flex-direction: column;
    padding: 0.75rem 1.25rem 1.25rem;
  }
  .nav-links a {
    padding: 0.35rem 0.5rem;
  }
  .main-nav.open {
    display: block;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 2.5rem;
  }
}