/* ============================================================
   VOLTBRIDGE AI — THEME
   Dark premium · Syne display · DM Sans body
   Accent: electric amber #F5A623 (energie + argent)
   ============================================================ */

:root {
  --bg:          #08080e;
  --bg-surface:  #0f0f1a;
  --bg-card:     #14141f;
  --bg-card-alt: #181826;
  --fg:          #eeeef5;
  --fg-muted:    #7878a0;
  --fg-faint:    #3a3a55;
  --accent:      #F5A623;
  --accent-dim:  rgba(245, 166, 35, 0.10);
  --accent-glow: rgba(245, 166, 35, 0.20);
  --green:       #1ac98e;
  --border:      rgba(255, 255, 255, 0.07);
  --border-accent: rgba(245, 166, 35, 0.25);
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --font-display: 'Syne', system-ui, sans-serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --max-w:        1160px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
.accent { color: var(--accent); }

/* BUTTONS */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #08080e;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
  white-space: nowrap;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px var(--accent-glow); }
.btn-primary:active { transform: translateY(0); opacity: 0.9; }
.btn-primary.btn-large { font-size: 1.05rem; padding: 1rem 2.5rem; }

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--fg-muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--fg-faint); color: var(--fg); }

/* NAV */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  background: rgba(8, 8, 14, 0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 0.55rem; }
.logo-icon { font-size: 1.3rem; filter: drop-shadow(0 0 10px var(--accent-glow)); }
.logo-text { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; letter-spacing: -0.03em; }

.nav-cta {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: -0.01em;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s, box-shadow 0.2s;
}
.nav-cta:hover { background: rgba(245, 166, 35, 0.18); box-shadow: 0 0 16px var(--accent-glow); }

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 9rem 2rem 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%; right: -15%;
  width: 900px; height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,166,35,0.07) 0%, transparent 65%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%; left: -10%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26,201,142,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { max-width: 820px; margin: 0 auto; position: relative; animation: fadeUp 0.6s ease both; }

.hero-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1.75rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-actions { display: flex; align-items: center; gap: 1.5rem; margin-bottom: 3.5rem; flex-wrap: wrap; }
.hero-hint { font-size: 0.85rem; color: var(--fg-muted); }

.hero-proof { display: flex; align-items: center; gap: 2.5rem; padding-top: 2.5rem; border-top: 1px solid var(--border); }
.proof-item { display: flex; flex-direction: column; gap: 0.2rem; }
.proof-val { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; letter-spacing: -0.03em; color: var(--accent); }
.proof-label { font-size: 0.8rem; color: var(--fg-muted); max-width: 130px; line-height: 1.4; }
.proof-sep { width: 1px; height: 40px; background: var(--border); flex-shrink: 0; }

/* SECTION COMMON */
.section-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* FUNNEL */
.funnel {
  padding: 7rem 2rem;
  background: var(--bg-surface);
}
.funnel-inner { max-width: 700px; margin: 0 auto; }
.funnel-header { text-align: center; margin-bottom: 2.5rem; }
.funnel-header h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 3vw, 2.2rem); letter-spacing: -0.03em; margin-bottom: 0.85rem; }
.funnel-sub { color: var(--fg-muted); font-size: 1rem; max-width: 540px; margin: 0 auto; line-height: 1.7; }

.funnel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}
.funnel-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
}

.funnel-step { display: none; }
.funnel-step.active { display: block; }

.step-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.75rem; }
.step-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  white-space: nowrap;
}
.step-title { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; }

.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field label { font-size: 0.85rem; font-weight: 500; color: var(--fg-muted); }
.field label .required { color: var(--accent); }

.field input,
.field select,
.field textarea {
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  outline: none;
  width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
  -webkit-appearance: none;
}
.field input:focus,
.field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%237878a0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.field select option { background: var(--bg-card-alt); color: var(--fg); }

.input-with-hint { position: relative; }
.input-hint { display: block; font-size: 0.78rem; color: var(--fg-faint); margin-top: 0.35rem; }

.step-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 1.75rem; gap: 1rem; }
.funnel-step .btn-primary,
.funnel-step .btn-ghost { margin-top: 1.75rem; }
.step-nav .btn-primary,
.step-nav .btn-ghost { margin-top: 0; }

.success-state, .error-state, .loading-state { text-align: center; padding: 2rem 0; }
.success-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(26, 201, 142, 0.15);
  color: var(--green);
  font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
  border: 1px solid rgba(26, 201, 142, 0.3);
}
.success-state h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; margin-bottom: 0.75rem; color: var(--green); }
.success-state p { color: var(--fg-muted); max-width: 380px; margin: 0 auto; }

.error-msg {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 1rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-state p { color: var(--fg-muted); font-size: 0.9rem; }

.funnel-legal { text-align: center; font-size: 0.78rem; color: var(--fg-faint); margin-top: 1.25rem; }

/* HOW */
.how { padding: 7rem 0; }
.how h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 3vw, 2.2rem); letter-spacing: -0.03em; margin-bottom: 3.5rem; max-width: 560px; }
.how-steps { display: flex; flex-direction: column; }
.how-step { display: flex; gap: 2rem; align-items: flex-start; padding: 2rem 0; }
.step-badge {
  font-family: var(--font-display); font-weight: 800; font-size: 0.8rem; letter-spacing: 0.05em;
  color: var(--accent); background: var(--accent-dim); border: 1px solid var(--border-accent);
  min-width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.step-content h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; letter-spacing: -0.02em; margin-bottom: 0.6rem; }
.step-content p { color: var(--fg-muted); font-size: 0.95rem; line-height: 1.7; max-width: 600px; }
.how-connector { width: 2px; height: 24px; background: linear-gradient(to bottom, var(--border-accent), var(--border)); margin-left: calc(22px - 1px); }

/* BENEFITS */
.benefits { padding: 7rem 0; background: var(--bg-surface); }
.benefits h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 3vw, 2.2rem); letter-spacing: -0.03em; margin-bottom: 3rem; max-width: 640px; }
.benefits-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.benefit-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 2rem;
  transition: border-color 0.25s, transform 0.25s;
}
.benefit-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
.benefit-icon {
  width: 44px; height: 44px;
  background: var(--accent-dim); border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-bottom: 1.25rem;
}
.benefit-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1rem; letter-spacing: -0.02em; margin-bottom: 0.6rem; }
.benefit-card p { color: var(--fg-muted); font-size: 0.9rem; line-height: 1.65; }

/* AUDIENCE */
.audience { padding: 7rem 0; }
.audience h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 3vw, 2.2rem); letter-spacing: -0.03em; margin-bottom: 3rem; max-width: 640px; }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.audience-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 1.5rem 1.5rem 1.75rem;
  display: flex; flex-direction: column; gap: 0.35rem;
  transition: border-color 0.2s;
}
.audience-item:hover { border-color: var(--fg-faint); }
.audience-icon { font-size: 1.6rem; margin-bottom: 0.5rem; display: block; }
.audience-label { font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; letter-spacing: -0.02em; }
.audience-desc { font-size: 0.82rem; color: var(--fg-muted); }

/* NUMBERS */
.numbers { padding: 6rem 0; background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.numbers h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 2.5vw, 1.9rem); letter-spacing: -0.03em; margin-bottom: 3rem; }
.numbers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; }
.number-item { display: flex; flex-direction: column; gap: 0.5rem; }
.number-value { font-family: var(--font-display); font-weight: 800; font-size: clamp(2.2rem, 4vw, 3rem); letter-spacing: -0.04em; color: var(--accent); line-height: 1; }
.number-label { color: var(--fg-muted); font-size: 0.9rem; max-width: 200px; line-height: 1.5; }

/* CTA FINAL */
.cta-final { padding: 7rem 0; }
.cta-box {
  background: var(--bg-card); border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg); padding: 3.5rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 3rem; position: relative; overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute; top: -60%; right: -10%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta-text h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 2.5vw, 1.9rem); letter-spacing: -0.03em; margin-bottom: 0.75rem; max-width: 480px; }
.cta-text p { color: var(--fg-muted); font-size: 0.95rem; max-width: 420px; }

/* CLOSING */
.closing { padding: 8rem 0; text-align: center; }
.closing h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(2rem, 4.5vw, 3rem); letter-spacing: -0.03em; line-height: 1.15; max-width: 680px; margin: 0 auto 1.5rem; }
.closing-sub { color: var(--fg-muted); font-size: 1.05rem; margin-bottom: 2.5rem; }
.closing-hint { margin-top: 1rem; font-size: 0.82rem; color: var(--fg-faint); }

/* PROBLEM (kept for backwards compat) */
.problem { padding: 7rem 0; }
.problem-header { margin-bottom: 3.5rem; }
.problem-header h2 { font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.2rem); font-weight: 800; letter-spacing: -0.03em; max-width: 680px; }
.problem-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.problem-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 2rem; transition: border-color 0.2s; }
.problem-card:hover { border-color: var(--fg-faint); }
.problem-icon { font-size: 1.3rem; color: var(--accent); margin-bottom: 1rem; }
.problem-card h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; margin-bottom: 0.65rem; }
.problem-card p { color: var(--fg-muted); font-size: 0.9rem; line-height: 1.65; }

/* FOOTER */
.footer { padding: 3rem 0; border-top: 1px solid var(--border); }
.footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2rem; }
.footer-brand { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.footer-name { font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; }
.footer-tagline { color: var(--fg-faint); font-size: 0.8rem; margin-left: 0.25rem; }
.footer-links { display: flex; gap: 1.5rem; justify-content: center; }
.footer-links a { font-size: 0.85rem; color: var(--fg-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--fg); }
.footer-legal { display: flex; flex-direction: column; align-items: flex-end; gap: 0.25rem; }
.footer-legal span { font-size: 0.78rem; color: var(--fg-faint); }

/* ANIMATIONS */
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ============================================================
   FILE UPLOAD STYLES
   ============================================================ */
.upload-area {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2.5rem 1.5rem;
  background: var(--bg-card-alt);
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}

.upload-placeholder:hover {
  border-color: var(--accent);
  background: rgba(245, 166, 35, 0.05);
}

.upload-icon {
  font-size: 2rem;
  display: block;
}

.upload-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fg);
}

.upload-hint {
  font-size: 0.8rem;
  color: var(--fg-muted);
  display: block;
}

.upload-selected {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(26, 201, 142, 0.08);
  border: 1px solid rgba(26, 201, 142, 0.3);
  border-radius: var(--radius-sm);
  width: 100%;
}

.upload-filename {
  font-size: 0.9rem;
  color: var(--fg);
  word-break: break-word;
  flex: 1;
  font-family: monospace;
}

.upload-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg-muted);
  cursor: pointer;
  font-weight: 700;
  transition: background 0.2s, color 0.2s;
  flex-shrink: 0;
}

.upload-remove:hover {
  background: rgba(255, 107, 107, 0.1);
  color: #ff6b6b;
  border-color: #ff6b6b;
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

@media (max-width: 900px) {
  .benefits-grid, .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-box { flex-direction: column; text-align: center; padding: 2.5rem 2rem; gap: 2rem; }
  .cta-text h2, .cta-text p { max-width: 100%; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-brand { justify-content: center; }
  .footer-legal { align-items: center; }
}

@media (max-width: 768px) {
  /* NAV */
  .nav { padding: 0.75rem 1rem; }
  .logo-text { font-size: 0.9rem; }
  .nav-cta { font-size: 0.75rem; padding: 0.4rem 0.9rem; }

  /* HERO */
  .hero { padding: 6.5rem 1rem 3rem; min-height: auto; }
  .hero::before { width: 500px; height: 500px; }
  .hero::after { width: 350px; height: 350px; }
  .hero h1 { font-size: clamp(1.8rem, 5vw, 3.2rem); margin-bottom: 1.25rem; }
  .hero-label { font-size: 0.65rem; padding: 0.3rem 0.75rem; margin-bottom: 1.5rem; }
  .hero-sub { font-size: 1rem; margin-bottom: 1.75rem; }
  .hero-actions { gap: 1rem; margin-bottom: 2.5rem; }
  .hero-actions .btn-primary { width: 100%; text-align: center; }
  .hero-hint { display: none; }
  .hero-proof { flex-direction: column; gap: 1.25rem; padding-top: 1.75rem; }
  .proof-item { flex-direction: row; align-items: center; gap: 0.75rem; }
  .proof-val { font-size: 1.25rem; }
  .proof-label { max-width: 100%; font-size: 0.75rem; }
  .proof-sep { display: none; }

  /* FUNNEL */
  .funnel { padding: 4rem 1rem; }
  .funnel-card { padding: 1.5rem; }
  .funnel-header h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); }
  .field-grid { grid-template-columns: 1fr; gap: 1rem; }
  .field { gap: 0.4rem; }
  .field label { font-size: 0.8rem; }
  .field input, .field select, .field textarea { padding: 0.65rem 0.85rem; font-size: 0.9rem; }
  .funnel-legal { font-size: 0.72rem; margin-top: 1rem; }
  .step-nav { gap: 0.75rem; flex-direction: column-reverse; }
  .step-nav .btn-primary, .step-nav .btn-ghost { width: 100%; }
  .upload-placeholder { padding: 2rem 1rem; }

  /* HOW */
  .how { padding: 3.5rem 0; }
  .how h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-bottom: 2.5rem; }
  .how-step { gap: 1rem; padding: 1.5rem 0; }
  .step-badge { min-width: 40px; height: 40px; font-size: 0.7rem; }
  .step-content h3 { font-size: 0.95rem; }
  .step-content p { font-size: 0.88rem; }
  .how-connector { margin-left: calc(20px - 1px); }

  /* BENEFITS */
  .benefits { padding: 3.5rem 0; }
  .benefits h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-bottom: 2.5rem; }
  .benefits-grid, .audience-grid, .problem-grid, .numbers-grid { grid-template-columns: 1fr; gap: 1rem; }
  .benefit-card { padding: 1.5rem; }
  .benefit-icon { width: 40px; height: 40px; margin-bottom: 1rem; }
  .benefit-card h3 { font-size: 0.95rem; }
  .benefit-card p { font-size: 0.85rem; }

  /* AUDIENCE */
  .audience { padding: 3.5rem 0; }
  .audience h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-bottom: 2.5rem; }
  .audience-item { padding: 1.25rem; }
  .audience-label { font-size: 0.9rem; }
  .audience-desc { font-size: 0.8rem; }

  /* NUMBERS */
  .numbers { padding: 4rem 0; }
  .numbers h2 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); margin-bottom: 2.5rem; }
  .numbers-grid { gap: 1.5rem; }
  .number-value { font-size: clamp(1.8rem, 4vw, 2.4rem); }
  .number-label { font-size: 0.85rem; }

  /* CTA FINAL */
  .cta-final { padding: 3.5rem 0; }
  .cta-box { padding: 2rem 1.5rem; gap: 1.5rem; }
  .cta-text h2 { font-size: clamp(1.3rem, 2.5vw, 1.6rem); margin-bottom: 0.5rem; }
  .cta-text p { font-size: 0.9rem; }

  /* CLOSING */
  .closing { padding: 4.5rem 0; }
  .closing h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); margin-bottom: 1.25rem; }
  .closing-sub { font-size: 0.95rem; margin-bottom: 2rem; }

  /* PROBLEM */
  .problem { padding: 3.5rem 0; }
  .problem-header h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin-bottom: 2.5rem; }
  .problem-card { padding: 1.5rem; }
  .problem-card h3 { font-size: 0.95rem; }
  .problem-card p { font-size: 0.85rem; }

  /* FOOTER */
  .footer { padding: 2.5rem 0; }
  .footer-inner { padding: 0 1rem; gap: 1rem; }
  .footer-brand { justify-content: center; }
  .footer-links { gap: 1rem; flex-wrap: wrap; }
  .footer-links a { font-size: 0.8rem; }
  .footer-legal { align-items: center; }
  .footer-legal span { font-size: 0.72rem; }

  /* SECTION COMMON */
  .section-inner { padding: 0 1rem; }
  .section-tag { font-size: 0.65rem; }
}

@media (max-width: 540px) {
  /* EXTRA SMALL SCREENS (320px - 540px) */

  /* NAV */
  .nav { padding: 0.6rem 0.75rem; }
  .logo { gap: 0.4rem; }
  .logo-icon { font-size: 1.1rem; }
  .logo-text { font-size: 0.85rem; letter-spacing: -0.02em; }
  .nav-cta { font-size: 0.7rem; padding: 0.35rem 0.75rem; }

  /* HERO */
  .hero { padding: 5.5rem 0.75rem 2.5rem; }
  .hero::before { width: 350px; height: 350px; top: -20%; right: -20%; }
  .hero::after { width: 250px; height: 250px; bottom: -15%; left: -15%; }
  .hero-inner { animation: none; }
  .hero h1 { font-size: clamp(1.5rem, 4.5vw, 2.8rem); margin-bottom: 1rem; line-height: 1.2; }
  .hero-label { font-size: 0.6rem; padding: 0.25rem 0.65rem; margin-bottom: 1.25rem; }
  .hero-sub { font-size: 0.95rem; line-height: 1.6; margin-bottom: 1.5rem; }
  .hero-actions { flex-direction: column; gap: 0.75rem; margin-bottom: 2rem; }
  .hero-actions .btn-primary { width: 100%; padding: 0.75rem 1.5rem; font-size: 0.9rem; }
  .hero-proof { padding-top: 1.5rem; gap: 1rem; }
  .proof-item { gap: 0.5rem; }
  .proof-val { font-size: 1rem; }
  .proof-label { font-size: 0.7rem; }

  /* FUNNEL */
  .funnel { padding: 3rem 0.75rem; }
  .funnel-card { padding: 1.25rem; border-radius: 12px; }
  .funnel-header h2 { font-size: clamp(1.2rem, 2.8vw, 1.6rem); margin-bottom: 0.75rem; }
  .funnel-sub { font-size: 0.9rem; }
  .step-header { gap: 0.75rem; margin-bottom: 1.5rem; }
  .step-number { font-size: 0.65rem; padding: 0.25rem 0.65rem; }
  .step-title { font-size: 1rem; }
  .field { gap: 0.35rem; }
  .field label { font-size: 0.75rem; font-weight: 500; }
  .field input, .field select, .field textarea {
    padding: 0.6rem 0.75rem;
    font-size: 0.88rem;
    min-height: 44px;
  }
  .upload-placeholder { padding: 1.75rem 1rem; gap: 0.5rem; }
  .upload-icon { font-size: 1.75rem; }
  .upload-text { font-size: 0.88rem; }
  .upload-hint { font-size: 0.75rem; }
  .upload-selected { padding: 0.75rem 1rem; gap: 0.75rem; }
  .upload-filename { font-size: 0.8rem; }
  .upload-remove { width: 24px; height: 24px; }
  .step-nav { gap: 0.5rem; }
  .step-nav .btn-primary, .step-nav .btn-ghost {
    width: 100%;
    padding: 0.7rem 1.25rem;
    font-size: 0.88rem;
    min-height: 44px;
  }
  .funnel-step .btn-primary { width: 100%; }
  .funnel-legal { font-size: 0.68rem; margin-top: 0.75rem; }

  /* HOW */
  .how { padding: 3rem 0; }
  .how h2 { font-size: clamp(1.2rem, 2.8vw, 1.6rem); margin-bottom: 2rem; }
  .how-step { gap: 0.85rem; padding: 1.25rem 0; }
  .step-badge { min-width: 36px; height: 36px; font-size: 0.65rem; }
  .step-content h3 { font-size: 0.9rem; margin-bottom: 0.5rem; }
  .step-content p { font-size: 0.83rem; }
  .how-connector { margin-left: calc(18px - 1px); height: 18px; }

  /* BENEFITS */
  .benefits { padding: 3rem 0; }
  .benefits h2 { font-size: clamp(1.2rem, 2.8vw, 1.6rem); margin-bottom: 2rem; }
  .benefit-card { padding: 1.25rem; border-radius: 12px; }
  .benefit-icon { width: 36px; height: 36px; margin-bottom: 0.85rem; font-size: 0.8rem; }
  .benefit-card h3 { font-size: 0.9rem; }
  .benefit-card p { font-size: 0.83rem; }

  /* AUDIENCE */
  .audience { padding: 3rem 0; }
  .audience h2 { font-size: clamp(1.2rem, 2.8vw, 1.6rem); margin-bottom: 2rem; }
  .audience-item { padding: 1rem; }
  .audience-icon { font-size: 1.4rem; margin-bottom: 0.4rem; }
  .audience-label { font-size: 0.88rem; }
  .audience-desc { font-size: 0.75rem; }

  /* NUMBERS */
  .numbers { padding: 3rem 0; }
  .numbers h2 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); margin-bottom: 2rem; }
  .number-value { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
  .number-label { font-size: 0.8rem; }

  /* CTA FINAL */
  .cta-final { padding: 3rem 0; }
  .cta-box { padding: 1.75rem 1rem; gap: 1.25rem; border-radius: 16px; }
  .cta-text h2 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); margin-bottom: 0.4rem; }
  .cta-text p { font-size: 0.88rem; }

  /* CLOSING */
  .closing { padding: 3.5rem 0; }
  .closing h2 { font-size: clamp(1.4rem, 3.5vw, 2.2rem); margin-bottom: 1rem; }
  .closing-sub { font-size: 0.9rem; margin-bottom: 1.5rem; }
  .closing-hint { font-size: 0.75rem; }

  /* FOOTER */
  .footer { padding: 2rem 0; }
  .footer-inner { padding: 0 0.75rem; gap: 0.75rem; }
  .footer-brand { gap: 0.4rem; }
  .footer-name { font-size: 0.85rem; }
  .footer-tagline { font-size: 0.7rem; margin-left: 0.2rem; }
  .footer-links { gap: 0.75rem; }
  .footer-links a { font-size: 0.75rem; }
  .footer-legal span { font-size: 0.65rem; }

  /* SECTION COMMON */
  .section-inner { padding: 0 0.75rem; }
  .section-tag { font-size: 0.6rem; padding: 0.25rem 0.65rem; margin-bottom: 0.75rem; }

  /* BTN */
  .btn-primary { padding: 0.7rem 1.5rem; font-size: 0.88rem; min-height: 44px; }
  .btn-ghost { padding: 0.65rem 1.1rem; font-size: 0.85rem; min-height: 44px; }
}