/* ── Reset & Variables ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:        #25D366;
  --green-dark:   #128C7E;
  --green-light:  #e8f5e9;
  --green-glow:   rgba(37,211,102,.18);
  --dark:         #0d1117;
  --dark-2:       #111b21;
  --dark-3:       #1a2a35;
  --white:        #ffffff;
  --gray-50:      #f8fafc;
  --gray-100:     #f1f5f9;
  --gray-200:     #e2e8f0;
  --gray-400:     #94a3b8;
  --gray-600:     #475569;
  --gray-800:     #1e293b;
  --blue:         #3b82f6;
  --orange:       #f59e0b;
  --purple:       #8b5cf6;
  --teal:         #14b8a6;
  --radius-sm:    8px;
  --radius:       14px;
  --radius-lg:    20px;
  --radius-xl:    28px;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.08);
  --shadow:       0 4px 20px rgba(0,0,0,.08);
  --shadow-lg:    0 12px 40px rgba(0,0,0,.12);
  --shadow-xl:    0 24px 60px rgba(0,0,0,.16);
  --font:         'Inter', system-ui, -apple-system, sans-serif;
  --max-w:        1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--gray-800);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
code {
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  font-size: .9em;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .22s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37,211,102,.35);
}
.btn-primary:hover {
  background: #1ebe5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,211,102,.45);
}
.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
}
.btn-ghost:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
  color: var(--gray-800);
}
.btn-nav {
  background: var(--green);
  color: #fff;
  padding: 9px 20px;
  font-size: 14px;
  border-radius: var(--radius-sm);
}
.btn-nav:hover { background: #1ebe5a; }
.btn-lg  { padding: 14px 28px; font-size: 16px; border-radius: var(--radius); }
.btn-xl  { padding: 16px 36px; font-size: 17px; border-radius: var(--radius); }

/* ── Navbar ────────────────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow .3s;
}
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  color: var(--gray-800);
  flex-shrink: 0;
}
.logo-bubble { font-size: 26px; }
.logo-name strong { color: var(--green); }

.nav-links {
  display: flex;
  gap: 28px;
  flex: 1;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  transition: color .2s;
}
.nav-links a:hover { color: var(--green); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-600);
  border-radius: 2px;
  transition: all .3s;
}

/* ── Section Helpers ───────────────────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  background: var(--green-light);
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--gray-800);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 17px;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--dark-2) 0%, var(--dark) 60%, #0a1f14 100%);
  padding: 140px 0 80px;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse, rgba(37,211,102,.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37,211,102,.12);
  border: 1px solid rgba(37,211,102,.25);
  color: var(--green);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .6; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -.02em;
}
.highlight {
  color: var(--green);
  position: relative;
}
.highlight::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green), transparent);
  border-radius: 2px;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,.7);
  line-height: 1.7;
  margin-bottom: 36px;
}
.hero-desc strong { color: var(--green); }

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}
.hstat { text-align: center; }
.hstat-val {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: var(--green);
}
.hstat-lbl {
  font-size: 12px;
  color: rgba(255,255,255,.5);
  margin-top: 2px;
}
.hstat-sep {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,.12);
}

.hero-visual { position: relative; }

.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
}
.hero-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 32px 80px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.06);
  transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
  transition: transform .4s ease;
}
.hero-img:hover { transform: perspective(1000px) rotateY(0deg) rotateX(0deg); }

.hero-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  animation: float 3s ease-in-out infinite;
}
.hero-float-1 { bottom: -16px; left: -20px; animation-delay: 0s; }
.hero-float-2 { top: -16px; right: -20px; animation-delay: 1.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
.float-icon { font-size: 24px; }
.float-val  { font-size: 16px; font-weight: 800; color: var(--gray-800); }
.float-lbl  { font-size: 11px; color: var(--gray-400); }

.hero-wave {
  position: absolute;
  bottom: -1px; left: 0; right: 0;
}
.hero-wave svg { display: block; width: 100%; }

/* ── Logos Bar ─────────────────────────────────────────────────────────────── */
.logos-bar {
  background: var(--gray-50);
  padding: 32px 0;
  border-bottom: 1px solid var(--gray-200);
}
.logos-label {
  text-align: center;
  font-size: 13px;
  color: var(--gray-400);
  font-weight: 500;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.logos-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.logo-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  box-shadow: var(--shadow-sm);
  transition: all .2s;
}
.logo-chip:hover {
  border-color: var(--green);
  color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ── Features ──────────────────────────────────────────────────────────────── */
.features {
  padding: 100px 0;
  background: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.feat-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all .25s ease;
}
.feat-card:hover {
  border-color: var(--green);
  box-shadow: 0 8px 32px rgba(37,211,102,.1);
  transform: translateY(-4px);
}
.feat-card--large {
  grid-column: span 1;
}
.feat-card--dark {
  background: var(--dark-2);
  border-color: rgba(255,255,255,.08);
  color: var(--white);
}
.feat-card--dark h3 { color: var(--white); }
.feat-card--dark p  { color: rgba(255,255,255,.65); }

.feat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.feat-icon--green  { background: rgba(37,211,102,.12); }
.feat-icon--blue   { background: rgba(59,130,246,.12); }
.feat-icon--orange { background: rgba(245,158,11,.12); }
.feat-icon--purple { background: rgba(139,92,246,.12); }
.feat-icon--teal   { background: rgba(20,184,166,.12); }
.feat-icon--white  { background: rgba(255,255,255,.1); }

.feat-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 10px;
}
.feat-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}
.feat-tag {
  display: inline-block;
  background: var(--green-light);
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-top: 14px;
}
.feat-stats-row {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.feat-mini-stat {
  flex: 1;
  background: rgba(255,255,255,.06);
  border-radius: var(--radius-sm);
  padding: 10px;
  text-align: center;
}
.feat-mini-stat span {
  display: block;
  font-size: 11px;
  color: rgba(255,255,255,.45);
  margin-bottom: 4px;
}
.feat-mini-stat strong {
  font-size: 15px;
  color: var(--green);
}

/* ── How It Works ──────────────────────────────────────────────────────────── */
.how-it-works {
  padding: 100px 0;
  background: var(--gray-50);
}

.steps-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.step-card {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all .25s;
}
.step-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.step-num {
  position: absolute;
  top: 20px; right: 20px;
  font-size: 48px;
  font-weight: 900;
  color: var(--gray-200);
  line-height: 1;
  letter-spacing: -.03em;
}
.step-icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.step-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-card p {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.6;
}
.step-code {
  background: var(--dark);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.code-line {
  font-family: 'Fira Code', monospace;
  font-size: 13px;
  color: rgba(255,255,255,.85);
}
.code-cmd { color: var(--green); margin-right: 8px; }

.step-img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-top: 16px;
  border: 1px solid var(--gray-200);
}

.step-metrics {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}
.step-metric {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
}
.step-metric--green  { background: #e8f5e9; color: #2e7d32; }
.step-metric--blue   { background: #e3f2fd; color: #1565c0; }
.step-metric--orange { background: #fff3e0; color: #e65100; }

.step-arrow {
  font-size: 28px;
  color: var(--gray-400);
  margin-top: 80px;
  flex-shrink: 0;
}

/* ── Screenshots ───────────────────────────────────────────────────────────── */
.screenshots {
  padding: 100px 0;
  background: var(--white);
}

.screenshots-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}
.ss-tab {
  padding: 10px 22px;
  border-radius: 20px;
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-600);
  cursor: pointer;
  transition: all .2s;
}
.ss-tab:hover { border-color: var(--green); color: var(--green); }
.ss-tab.active {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.screenshots-panels { position: relative; }
.ss-panel { display: none; }
.ss-panel.active { display: block; }

.ss-img-wrap {
  background: var(--gray-100);
  border-radius: var(--radius-xl);
  padding: 24px;
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}
.ss-img-wrap img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.ss-img-wrap--square { max-width: 640px; margin: 0 auto; }

.ss-caption {
  text-align: center;
  margin-top: 20px;
  font-size: 15px;
  color: var(--gray-600);
}
.ss-caption strong { color: var(--gray-800); }

/* ── Tech Section ──────────────────────────────────────────────────────────── */
.tech-section {
  padding: 100px 0;
  background: var(--gray-50);
}

.tech-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.tech-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 32px;
}
.tech-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.tech-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}
.tech-dot--green  { background: var(--green); box-shadow: 0 0 8px rgba(37,211,102,.5); }
.tech-dot--blue   { background: var(--blue); }
.tech-dot--orange { background: var(--orange); }
.tech-dot--purple { background: var(--purple); }
.tech-item strong { display: block; font-size: 15px; margin-bottom: 2px; }
.tech-item span   { font-size: 13px; color: var(--gray-600); }

/* Architecture Diagram */
.tech-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.arch-box {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  min-width: 110px;
  box-shadow: var(--shadow);
  transition: all .2s;
}
.arch-box:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.arch-box--phone  { border-color: var(--green); }
.arch-box--server { border-color: var(--blue); }
.arch-box--cf     { border-color: var(--orange); }
.arch-box--browser{ border-color: var(--purple); }
.arch-icon  { font-size: 32px; margin-bottom: 8px; }
.arch-label { font-size: 13px; font-weight: 700; color: var(--gray-800); line-height: 1.3; }
.arch-sub   { font-size: 11px; color: var(--gray-400); margin-top: 4px; }
.arch-arrow { font-size: 24px; color: var(--gray-400); }
.arch-col   { display: flex; flex-direction: column; gap: 12px; }

/* ── API Section ───────────────────────────────────────────────────────────── */
.api-section {
  padding: 100px 0;
  background: var(--white);
}

.api-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.api-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  transition: all .2s;
}
.api-card:hover {
  border-color: var(--green);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.api-method {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.api-method--get  { background: #dcfce7; color: #166534; }
.api-method--post { background: #dbeafe; color: #1e40af; }
.api-path {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 8px;
  background: var(--white);
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--gray-200);
}
.api-card p {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.5;
}
.api-card p code {
  background: var(--gray-100);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--green-dark);
}

/* ── CTA Section ───────────────────────────────────────────────────────────── */
.cta-section {
  padding: 100px 0;
  background: var(--gray-50);
}

.cta-card {
  position: relative;
  background: linear-gradient(135deg, var(--dark-2) 0%, var(--dark-3) 100%);
  border-radius: var(--radius-xl);
  padding: 72px 60px;
  overflow: hidden;
  text-align: center;
}
.cta-glow {
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 400px;
  background: radial-gradient(ellipse, rgba(37,211,102,.2) 0%, transparent 70%);
  pointer-events: none;
}
.cta-content { position: relative; z-index: 1; }
.cta-card h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
}
.cta-card p {
  font-size: 17px;
  color: rgba(255,255,255,.65);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.cta-install { text-align: left; }
.install-label {
  font-size: 12px;
  color: rgba(255,255,255,.4);
  margin-bottom: 6px;
  font-weight: 500;
}
.install-code {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}
.install-code code {
  color: var(--green);
  font-size: 14px;
}
.copy-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,.4);
  cursor: pointer;
  padding: 2px;
  transition: color .2s;
}
.copy-btn:hover { color: var(--green); }
.cta-note {
  font-size: 14px;
  color: rgba(255,255,255,.4);
}

/* ── Footer ────────────────────────────────────────────────────────────────── */
.footer {
  background: var(--dark);
  padding: 60px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .logo-bubble { font-size: 28px; }
.footer-brand .logo-name   { color: var(--white); font-size: 18px; }
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,.45);
  margin-top: 12px;
  max-width: 280px;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  gap: 60px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,255,255,.5);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  margin-bottom: 10px;
  transition: color .2s;
}
.footer-col a:hover { color: var(--green); }

.footer-bottom {
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom span {
  font-size: 13px;
  color: rgba(255,255,255,.35);
}
.footer-note { font-style: italic; }

/* ── Animations ────────────────────────────────────────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-inner       { grid-template-columns: 1fr; text-align: center; }
  .hero-visual      { display: none; }
  .hero-actions     { justify-content: center; }
  .hero-stats       { justify-content: center; }
  .features-grid    { grid-template-columns: repeat(2, 1fr); }
  .tech-inner       { grid-template-columns: 1fr; }
  .tech-diagram     { justify-content: center; }
  .api-grid         { grid-template-columns: repeat(2, 1fr); }
  .footer-inner     { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links, .btn-nav { display: none; }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: var(--white);
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    gap: 16px;
    z-index: 999;
  }
  .nav-links.open + .btn-nav {
    display: block;
    margin: 0 24px 20px;
  }

  .hero { padding: 100px 0 60px; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-row { flex-direction: column; }
  .step-arrow { display: none; }
  .api-grid { grid-template-columns: 1fr; }
  .cta-card { padding: 48px 24px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .footer-links { flex-direction: column; gap: 32px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .logos-row { gap: 8px; }
  .screenshots-tabs { flex-wrap: wrap; }
  .tech-diagram { flex-direction: column; align-items: center; }
  .arch-arrow { transform: rotate(90deg); }
  .arch-col { flex-direction: row; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 32px; }
  .section-title { font-size: 26px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}