:root {
  --red-600: #E53935;
  --red-500: #F44336;
  --red-200: #FFCDD2;
  --blue-600: #0066CC;
  --ink: #1F1F1F;
  --muted: #666666;
  --surface: #FFFFFF;
  --bg: #F5F5F5;
  --line: #E0E0E0;
  --shadow: 0 24px 60px rgba(19, 19, 19, 0.18);
}

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

body {
  font-family: "Sora", "Noto Sans Batak", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top, #FFF5F4 0%, #F9FAFB 45%, #F5F5F5 100%);
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(224, 224, 224, 0.6);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  margin-right: 16px;
}

.lang-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.lang-select {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
  color: var(--ink);
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  gap: 20px;
  font-size: 0.95rem;
  color: var(--muted);
}

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

.nav-toggle {
  display: none;
  border: none;
  background: transparent;
}

.nav-lang {
  display: none;
  align-items: center;
  gap: 10px;
}

.hamburger {
  width: 24px;
  height: 2px;
  background: var(--ink);
  position: relative;
  display: block;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--ink);
}

.hamburger::before {
  top: -7px;
}

.hamburger::after {
  top: 7px;
}

.hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  gap: 48px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.6rem, 4vw, 3.6rem);
  line-height: 1.05;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.btn {
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--red-500);
  color: #fff;
  box-shadow: 0 12px 30px rgba(244, 67, 54, 0.35);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(244, 67, 54, 0.4);
}

.btn.ghost {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}

.hero-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--muted);
}

.hero-card {
  background: var(--surface);
  border-radius: 24px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(224, 224, 224, 0.8);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 18px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.card-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--red-200);
}

.card-title {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
}

.card-body {
  padding: 22px;
}

.card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 18px;
  color: var(--muted);
}

.swap {
  color: var(--blue-600);
  font-size: 1.2rem;
}

.input-block,
.output-block {
  border-radius: 16px;
  padding: 14px 16px;
  background: #F9FAFB;
  margin-bottom: 14px;
  border: 1px solid #EEF0F2;
}

.output-block {
  background: #FFF5F4;
  border-color: #FFD6D6;
}

.input-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 6px;
}

.output-text {
  font-family: "Noto Sans Batak", "Sora", sans-serif;
  font-size: 1.4rem;
}

.chip-row {
  display: flex;
  gap: 10px;
}

.chip {
  background: #fff;
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
}

.hero-glow {
  position: absolute;
  inset: -20% 10% auto;
  height: 300px;
  background: radial-gradient(circle, rgba(244, 67, 54, 0.2), transparent 70%);
  z-index: -1;
}

section {
  padding: 72px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: 10px;
}

.section-title p {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}

.feature {
  background: #fff;
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(19, 19, 19, 0.08);
}

.feature h3 {
  margin-bottom: 10px;
}

.feature p {
  color: var(--muted);
}

.how {
  background: #fff;
}

.steps {
  display: grid;
  gap: 18px;
  margin-bottom: 32px;
}

.step {
  display: flex;
  gap: 18px;
  padding: 20px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #F9FAFB;
}

.step-number {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--red-500);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: linear-gradient(120deg, #FFF1F1, #FFFFFF);
  border-radius: 22px;
  padding: 24px;
  border: 1px solid #FFDADA;
}

.fonts {
  background: #F9FAFB;
}

.fonts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: center;
}

.font-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tag {
  padding: 8px 12px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.85rem;
}

.font-card {
  background: #fff;
  border-radius: 22px;
  padding: 28px;
  border: 1px solid var(--line);
  box-shadow: 0 20px 50px rgba(19, 19, 19, 0.08);
}

.font-title {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: 12px;
}

.font-sample {
  font-family: "Noto Sans Batak", "Sora", sans-serif;
  font-size: 2rem;
  margin-bottom: 8px;
}

.font-caption {
  color: var(--muted);
}

.learn {
  background: #fff;
}

.learn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  align-items: center;
}

.learn-card {
  background: linear-gradient(140deg, #FFECEC, #FFFFFF 60%);
  border-radius: 22px;
  padding: 28px;
  border: 1px solid #FFDADA;
}

.learn-meta {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--blue-600);
  font-weight: 600;
}

.learn-copy p {
  color: var(--muted);
}

.faq {
  background: #F9FAFB;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.faq-item {
  background: #fff;
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--line);
}

.faq-item p {
  color: var(--muted);
}

.download {
  background: #fff;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  align-items: center;
}

.download-card {
  display: grid;
  gap: 16px;
}

.stat {
  background: #F9FAFB;
  border-radius: 18px;
  padding: 20px;
  border: 1px solid var(--line);
}

.stat p {
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  color: var(--muted);
}

.footer h3 {
  color: var(--ink);
}

.footer-title {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  margin-bottom: 8px;
  color: var(--muted);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .nav-actions {
    display: none;
  }

  .nav-menu {
    position: absolute;
    right: 4vw;
    top: 70px;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 20px 40px rgba(19, 19, 19, 0.1);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav-menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-lang {
    display: flex;
  }

  .cta-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 80px 0 56px;
  }

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