/* ============================================================
   ВПН для Телеграма — telegramvpn-ru.mom
   Палитра: Telegram blue, светлая тема
   Шрифты: Outfit (заголовки) + Work Sans (тело)
   Оси: HeroA gradient+form / NavB transparent->solid /
        CardsF large icon top / ButtonsC sharp /
        SectionsA alternating / FAQa accordion /
        FooterA 4-col dark / AnimB fade+scale
   ============================================================ */

:root {
  --primary: #229ED9;
  --primary-dark: #1781B5;
  --accent: #00C4FF;
  --accent-2: #5BD8FF;
  --bg: #FFFFFF;
  --bg-alt: #F2F8FC;
  --bg-deep: #E5F2FA;
  --text: #0E2233;
  --text-muted: #4F6B7E;
  --border: #D7E6F0;
  --card-bg: #FFFFFF;
  --footer-bg: #0C2433;
  --footer-bg-2: #0A1C28;
  --radius: 2px;
  --radius-sharp: 0px;
  --shadow-sm: 0 1px 3px rgba(11, 51, 79, 0.08);
  --shadow: 0 8px 24px rgba(11, 51, 79, 0.10);
  --shadow-strong: 0 18px 48px rgba(11, 51, 79, 0.18);
  --grad-primary: linear-gradient(135deg, #229ED9 0%, #00C4FF 100%);
  --grad-soft: linear-gradient(180deg, #F2F8FC 0%, #FFFFFF 100%);
  --grad-hero: radial-gradient(1200px 600px at 12% 20%, rgba(0, 196, 255, 0.22), transparent 60%),
               radial-gradient(900px 500px at 92% 6%, rgba(34, 158, 217, 0.30), transparent 60%),
               linear-gradient(135deg, #1781B5 0%, #229ED9 45%, #5BD8FF 100%);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Work Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-dark); }

h1, h2, h3, h4, h5 {
  font-family: 'Outfit', system-ui, sans-serif;
  color: var(--text);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
h3 { font-size: 1.18rem; }

p { color: var(--text); }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 22px; }

/* ============================================================
   HEADER (B: transparent -> solid white on scroll)
   ============================================================ */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 0;
  background: transparent;
  transition: background .28s ease, box-shadow .28s ease, padding .28s ease;
}
.header.scrolled {
  background: #FFFFFF;
  box-shadow: 0 1px 0 var(--border), 0 8px 22px rgba(11, 51, 79, 0.06);
  padding: 12px 0;
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.12rem;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}
.logo img { width: 36px; height: 36px; }
.header.scrolled .logo { color: var(--text); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 500;
  font-size: 0.96rem;
  transition: color .2s ease;
}
.nav-links a:hover { color: #FFFFFF; }
.header.scrolled .nav-links a { color: var(--text); }
.header.scrolled .nav-links a:hover { color: var(--primary); }

.nav-links a.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  background: var(--accent);
  color: #000000;
  font-weight: 800;
  border-radius: var(--radius);
  letter-spacing: 0.01em;
  border: 2px solid var(--accent);
  transition: background .2s ease, transform .15s ease;
}
.nav-links a.nav-cta:hover {
  background: var(--accent-2);
  color: #000000;
  transform: translateY(-1px);
}
.header.scrolled .nav-links a.nav-cta { color: #000000; }

.burger {
  display: none;
  width: 40px; height: 40px;
  background: transparent;
  border: 0;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.burger span {
  width: 24px;
  height: 2px;
  background: #FFFFFF;
  transition: background .2s ease;
}
.header.scrolled .burger span { background: var(--text); }

.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--footer-bg);
  z-index: 200;
  padding: 80px 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transform: translateX(105%);
  transition: transform .35s ease;
}
.mobile-nav.active { transform: translateX(0); }
.mobile-nav a {
  color: #E8F4FB;
  font-size: 1.18rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 14px;
}
.mobile-nav .btn { margin-top: 10px; align-self: flex-start; }
.mobile-nav .close-btn {
  position: absolute;
  top: 22px; right: 22px;
  width: 40px; height: 40px;
  background: transparent;
  color: #FFFFFF;
  border: 0;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* ============================================================
   BUTTONS (C: sharp corners)
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.01em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 6px 16px rgba(34, 158, 217, 0.32);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(23, 129, 181, 0.45);
}

.btn-accent {
  background: var(--accent);
  color: #062436;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #062436;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-ghost:hover {
  background: var(--primary);
  color: #FFFFFF;
}

.btn-arrow::after {
  content: '\2192';
  display: inline-block;
  margin-left: 4px;
  transition: transform .2s ease;
}
.btn-arrow:hover::after { transform: translateX(4px); }

/* ============================================================
   HERO (A: gradient + form-card overlay)
   ============================================================ */

.hero {
  position: relative;
  padding: 150px 0 100px;
  background: var(--grad-hero);
  color: #FFFFFF;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 18% 30%, rgba(255, 255, 255, 0.4), transparent 50%),
    radial-gradient(2px 2px at 78% 22%, rgba(255, 255, 255, 0.35), transparent 50%),
    radial-gradient(2px 2px at 36% 72%, rgba(255, 255, 255, 0.3), transparent 50%),
    radial-gradient(2px 2px at 88% 78%, rgba(255, 255, 255, 0.35), transparent 50%);
  pointer-events: none;
}
.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 56px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}
.hero h1 {
  color: #FFFFFF;
  margin-bottom: 22px;
}
.hero h1 .accent-text {
  background: linear-gradient(90deg, #C9F1FF 0%, #FFFFFF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.1rem;
  line-height: 1.65;
  margin-bottom: 30px;
  max-width: 560px;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 36px;
}
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
}
.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.92);
}
.trust-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  display: inline-block;
}
.trust-badge strong { color: #FFFFFF; font-weight: 700; }

.hero-card {
  background: #FFFFFF;
  color: var(--text);
  padding: 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-strong);
  position: relative;
}
.hero-card::before {
  content: '';
  position: absolute;
  inset: -8px;
  background: linear-gradient(135deg, rgba(0, 196, 255, 0.4), rgba(255, 255, 255, 0));
  z-index: -1;
}
.hero-card-title {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 6px;
}
.hero-card-sub {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 22px;
}
.hero-card-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.hero-card-row:last-of-type { border-bottom: 0; }
.hcr-icon {
  width: 42px; height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  color: var(--primary);
  flex-shrink: 0;
}
.hcr-text { flex: 1; }
.hcr-text strong {
  display: block;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text);
}
.hcr-text span {
  display: block;
  color: var(--text-muted);
  font-size: 0.86rem;
}
.hcr-status {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--primary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.hcr-status.ok { color: #1FA963; }
.hero-card-cta {
  display: block;
  margin-top: 22px;
  width: 100%;
  text-align: center;
}

/* ============================================================
   STATS BAR
   ============================================================ */

.stats-bar {
  background: #FFFFFF;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item .stat-num {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 2.1rem;
  color: var(--primary);
  display: block;
  line-height: 1.1;
}
.stat-item .stat-label {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============================================================
   SECTIONS (A: alternating white / grey)
   ============================================================ */

.section { padding: 90px 0; background: var(--bg); }
.section-alt { background: var(--bg-alt); }

.section-eyebrow {
  display: inline-block;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}
.section-title {
  text-align: center;
  margin: 0 auto 14px;
  max-width: 760px;
}
.section-eyebrow.fade-up,
.section-title.fade-up,
.section-subtitle.fade-up { display: block; text-align: center; }

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 auto 56px;
}

/* ============================================================
   FEATURES (Cards F: large icon top)
   ============================================================ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.feature-card {
  background: var(--card-bg);
  padding: 38px 28px 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: left;
  transition: transform .25s ease, box-shadow .25s ease, border-color .2s ease;
  position: relative;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}
.feature-icon {
  width: 64px;
  height: 64px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-primary);
  color: #FFFFFF;
  margin-bottom: 22px;
  position: relative;
}
.feature-icon::after {
  content: '';
  position: absolute;
  inset: -3px -3px auto auto;
  width: 14px;
  height: 14px;
  background: var(--accent);
}
.feature-card h3 { margin-bottom: 10px; font-size: 1.18rem; }
.feature-card p { color: var(--text-muted); font-size: 0.96rem; line-height: 1.7; }

/* ============================================================
   PLATFORMS / DOWNLOAD
   ============================================================ */

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.download-card {
  background: var(--card-bg);
  padding: 32px 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--text);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.download-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
  color: var(--text);
}
.download-icon {
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  color: var(--primary);
  flex-shrink: 0;
  transition: background .2s ease, color .2s ease;
}
.download-card:hover .download-icon {
  background: var(--primary);
  color: #FFFFFF;
}
.download-card h3 {
  font-size: 1.08rem;
  margin-bottom: 2px;
}
.download-card p {
  color: var(--text-muted);
  font-size: 0.86rem;
  margin: 0;
}

/* ============================================================
   WHY-US text block
   ============================================================ */

.text-block {
  max-width: 880px;
  margin: 0 auto;
}
.text-block p {
  margin-bottom: 18px;
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--text);
}
.text-block p:last-child { margin-bottom: 0; }

/* ============================================================
   CTA BANNER
   ============================================================ */

.cta-banner {
  background: var(--grad-primary);
  color: #FFFFFF;
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 18% 30%, rgba(255, 255, 255, 0.15), transparent 60%),
    radial-gradient(600px 300px at 82% 70%, rgba(0, 0, 0, 0.10), transparent 60%);
}
.cta-banner .container { position: relative; }
.cta-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.cta-banner h2 { color: #FFFFFF; margin-bottom: 14px; }
.cta-banner p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.06rem;
  max-width: 640px;
  margin: 0 auto 28px;
}

/* ============================================================
   FAQ (A: accordion)
   ============================================================ */

.faq-grid {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 6px 18px rgba(34, 158, 217, 0.12);
}
.faq-question {
  width: 100%;
  background: transparent;
  border: 0;
  padding: 22px 56px 22px 24px;
  text-align: left;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 1.04rem;
  color: var(--text);
  cursor: pointer;
  position: relative;
  transition: color .2s ease;
}
.faq-question:hover { color: var(--primary); }
.faq-question::after {
  content: '+';
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.6rem;
  color: var(--primary);
  font-weight: 400;
  transition: transform .25s ease;
  line-height: 1;
}
.faq-item.open .faq-question::after { transform: translateY(-50%) rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .25s ease;
  padding: 0 24px;
}
.faq-answer p {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.72;
}
.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 24px 22px;
}

/* ============================================================
   FOOTER (A: 4 dark columns)
   ============================================================ */

.footer {
  background: var(--footer-bg);
  color: #C8DAE6;
  padding: 70px 0 28px;
}
.footer .logo { color: #FFFFFF; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-about p {
  color: #92ABBD;
  font-size: 0.94rem;
  margin-top: 18px;
  line-height: 1.7;
}
.footer-col h4 {
  color: #FFFFFF;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: #92ABBD;
  font-size: 0.94rem;
  transition: color .2s ease;
}
.footer-col ul li a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: #6F8696;
  font-size: 0.86rem;
}
.footer-eng { font-family: 'Outfit', sans-serif; letter-spacing: 0.04em; }

/* ============================================================
   INSTRUCTION PAGE
   ============================================================ */

.instr-hero {
  padding: 150px 0 70px;
  background: var(--grad-hero);
  color: #FFFFFF;
  text-align: center;
}
.instr-hero h1 { color: #FFFFFF; margin-bottom: 14px; }
.instr-hero p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.08rem;
  max-width: 640px;
  margin: 0 auto;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  max-width: 980px;
  margin: 0 auto;
}
.step-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 30px;
  position: relative;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--grad-primary);
  color: #FFFFFF;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.4rem;
  margin-bottom: 22px;
}
.step-card h2 {
  font-size: 1.4rem;
  margin-bottom: 12px;
}
.step-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 14px;
}
.step-card ul {
  list-style: none;
  padding: 0;
  margin: 14px 0 22px;
}
.step-card ul li {
  position: relative;
  padding: 6px 0 6px 28px;
  font-size: 0.96rem;
  color: var(--text);
}
.step-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 14px;
  height: 2px;
  background: var(--primary);
}

.tip-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 980px;
  margin: 0 auto;
}
.tip-card {
  background: #FFFFFF;
  border-left: 4px solid var(--primary);
  padding: 24px 26px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.tip-card h3 { font-size: 1.06rem; margin-bottom: 8px; }
.tip-card p { color: var(--text-muted); font-size: 0.95rem; }

.after-pay {
  background: var(--bg-alt);
  padding: 40px 30px;
  border-radius: var(--radius);
  max-width: 980px;
  margin: 0 auto;
}
.after-pay h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}
.after-pay p {
  color: var(--text);
  margin-bottom: 22px;
}
.platforms-mini {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}
.platform-mini {
  background: #FFFFFF;
  padding: 16px 8px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text);
}
.platform-mini .pm-icon {
  display: block;
  margin: 0 auto 8px;
  color: var(--primary);
}

.instr-cta {
  text-align: center;
  margin-top: 60px;
}
.instr-cta h2 { margin-bottom: 12px; }
.instr-cta p {
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   FADE-UP + SCALE animation (Anim B)
   ============================================================ */

.fade-up {
  opacity: 0;
  transform: translateY(28px) scale(0.96);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

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

@media (max-width: 980px) {
  .nav-links { display: none; }
  .burger { display: flex; }
  .hero { padding: 130px 0 80px; }
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .hero-card { max-width: 460px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .steps-grid { grid-template-columns: 1fr; }
  .tip-grid { grid-template-columns: 1fr; }
  .platforms-mini { grid-template-columns: repeat(3, 1fr); }
  .section { padding: 70px 0; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.55rem; }
  .hero { padding: 120px 0 64px; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .platforms-mini { grid-template-columns: repeat(2, 1fr); }
  .cta-banner { padding: 60px 0; }
  .section { padding: 56px 0; }
  .feature-card { padding: 30px 22px 24px; }
  .step-card { padding: 28px 22px; }
  .after-pay { padding: 28px 20px; }
  .faq-question { padding: 18px 50px 18px 18px; font-size: 0.98rem; }
  .faq-item.open .faq-answer { padding: 0 18px 18px; }
  .faq-answer { padding: 0 18px; }
  .instr-hero { padding: 130px 0 56px; }
}