.landing-main {
  padding: 0 0 88px;
}

.landing-page .container {
  width: min(calc(100% - 40px), 1180px);
}

.hero {
  padding: 78px 0 64px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: clamp(36px, 6vw, 74px);
  align-items: center;
}

.hero-copy .eyebrow {
  margin-bottom: 20px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(42px, 5.2vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.055em;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
  margin-top: 9px;
  color: var(--blue);
  font-size: 0.62em;
  line-height: 1.18;
  letter-spacing: -0.035em;
}

.hero-lead {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-visual {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    linear-gradient(180deg, rgba(8, 20, 36, 0.02), rgba(8, 20, 36, 0.28)),
    url("../assets/hero-product-bg.png") center / cover no-repeat;
  box-shadow: 0 28px 70px rgba(20, 46, 75, 0.15);
}

.hero-alert {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 21px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 38px rgba(9, 28, 51, 0.18);
  backdrop-filter: blur(16px);
}

.hero-alert small {
  display: block;
  color: #087f75;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.hero-alert h2 {
  margin: 6px 0 2px;
  font-size: 22px;
}

.hero-alert p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.section {
  padding: 86px 0;
}

.section-head {
  max-width: 780px;
  margin-bottom: 38px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(32px, 4.8vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.section-head p {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  text-wrap: pretty;
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.scene-card {
  min-height: 300px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 25px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 14px 38px rgba(20, 46, 75, 0.055);
}

.scene-icon {
  display: grid;
  width: 70px;
  height: 70px;
  place-items: center;
  border-radius: 22px;
  color: var(--blue);
  background: #edf4ff;
  font-size: 26px;
  font-weight: 900;
}

.scene-icon svg {
  width: 36px;
  height: 36px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.scene-card:nth-child(1) .scene-icon {
  color: #087f75;
  background: #e8faf5;
}

.scene-card:nth-child(2) .scene-icon {
  color: #c84343;
  background: #fff0ef;
}

.scene-card:nth-child(3) .scene-icon {
  color: #c62d55;
  background: #fff0f4;
}

.scene-card:nth-child(4) .scene-icon {
  color: #087fb9;
  background: #eaf7ff;
}

.scene-card small {
  display: block;
  margin-top: 28px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.scene-card h3 {
  margin: 7px 0 8px;
  font-size: 19px;
  line-height: 1.35;
}

.scene-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.75;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.step {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
}

.step b {
  color: var(--blue);
  font-size: 10px;
}

.step h3 {
  margin: 24px 0 7px;
  font-size: 17px;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.proof {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px;
  align-items: center;
  padding: 34px;
  border-radius: 30px;
  color: #f7fbff;
  background:
    radial-gradient(circle at 92% 10%, rgba(113, 230, 216, 0.2), transparent 36%),
    #0b1728;
}

.proof h2 {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 45px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.proof p {
  margin: 14px 0 0;
  color: rgba(247, 251, 255, 0.64);
  font-size: 13px;
}

.proof ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.proof li {
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  color: rgba(247, 251, 255, 0.8);
  background: rgba(255, 255, 255, 0.05);
  font-size: 12px;
}

.limits {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.limit {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 19px;
  background: #fff;
}

.limit h3 {
  margin: 0 0 5px;
  font-size: 15px;
}

.limit p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.install-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.84);
}

.install-card h3 {
  margin: 0;
  font-size: 24px;
}

.install-card p {
  margin: 10px 0 20px;
  color: var(--muted);
  font-size: 13px;
}

.install-card .btn {
  width: 100%;
}

.install-card .btn + .btn {
  margin-top: 8px;
}

.install-qr {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 17px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #f8fbfc;
}

.install-qr img {
  width: 104px;
  height: 104px;
  flex: none;
  border-radius: 10px;
}

.install-qr strong,
.install-qr span {
  display: block;
}

.install-qr strong {
  color: var(--ink);
  font-size: 11px;
}

.install-qr span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 9.5px;
  line-height: 1.55;
}

.unavailable {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  background: #edf1f3;
  font-size: 12px;
  font-weight: 800;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  padding: 19px 2px;
  font-size: 14px;
  font-weight: 750;
  cursor: pointer;
}

.faq-list p {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 12.5px;
}

.closing {
  padding: 40px;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(135deg, #133e78, #0b1728);
}

.closing h2 {
  margin: 0;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.closing p {
  margin: 12px 0 24px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
}

.en-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-left: auto;
}

.en-nav a {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 720;
}

.en-nav a:hover {
  color: var(--blue);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero {
  background:
    linear-gradient(180deg, #ffffff 0%, #f4f8ff 100%);
  border-bottom: 1px solid var(--line);
}

.hero-visual {
  min-height: 585px;
  border-radius: 38px;
}

.hero-visual-label {
  position: absolute;
  top: 18px;
  left: 18px;
  display: grid;
  gap: 4px;
  padding: 12px 15px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 12px 28px rgba(9, 28, 51, 0.11);
  backdrop-filter: blur(14px);
}

.hero-visual-label span {
  color: #087f75;
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.hero-visual-label strong {
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.02em;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.hero-proof strong,
.hero-proof span {
  display: block;
}

.hero-proof strong {
  color: var(--ink);
  font-size: 11px;
}

.hero-proof span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 9.5px;
  line-height: 1.55;
}

.section-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.scene-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.scene-card {
  position: relative;
  display: grid;
  min-height: 290px;
  grid-template-columns: 112px minmax(0, 1fr);
  column-gap: 24px;
  align-content: center;
  padding: 26px;
  overflow: hidden;
  border-radius: 28px;
  background: #ffffff;
  border: 1px solid rgba(16, 36, 59, 0.1);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.scene-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 55px rgba(20, 46, 75, 0.11);
}

.scene-card::after {
  position: absolute;
  right: -54px;
  bottom: -66px;
  width: 160px;
  height: 160px;
  border: 1px solid rgba(21, 89, 214, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(21, 89, 214, 0.025);
  content: "";
}

.scene-card > * {
  position: relative;
  z-index: 1;
}

.scene-card:nth-child(1) {
  background: #fff;
  border-top: 3px solid #10b981;
}

.scene-card:nth-child(2) {
  background: #fff;
  border-top: 3px solid #ef4444;
}

.scene-card:nth-child(3) {
  background: #fff;
  border-top: 3px solid #f0527b;
}

.scene-card:nth-child(4) {
  background: #fff;
  border-top: 3px solid #38bdf8;
}

.scene-icon {
  width: 112px;
  height: 112px;
  grid-row: 1 / 4;
  align-self: center;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 13px 30px rgba(20, 46, 75, 0.08);
}

.scene-icon svg {
  width: 70px;
  height: 70px;
}

.scene-card small {
  align-self: end;
  margin-top: 0;
}

.scene-card h3 {
  align-self: start;
  font-size: 21px;
}

.scene-card p {
  align-self: start;
}

.steps {
  margin-top: 0;
  padding: 28px;
  border: 1px solid #d9e5f2;
  border-radius: 30px;
  background: #ffffff;
  box-shadow: 0 18px 45px rgba(20, 46, 75, 0.06);
}

.step {
  min-height: 180px;
  border-color: var(--line);
  background: #f7faff;
  box-shadow: 0 9px 22px rgba(20, 46, 75, 0.045);
}

.step b {
  color: var(--blue);
}

.step h3 {
  margin-top: 42px;
  color: var(--ink);
}

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

.story-section {
  background: #f8fafc;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof {
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  color: var(--ink);
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgba(20, 46, 75, 0.09);
  padding: 34px;
}

.proof-video {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  background: #050a10;
  box-shadow: 0 24px 55px rgba(0, 0, 0, 0.24);
  line-height: 0;
}

.proof-video video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.proof-copy {
  padding: 12px;
}

.proof-copy .eyebrow {
  border-color: rgba(0, 169, 154, 0.18);
  color: #087f75;
  background: rgba(0, 169, 154, 0.07);
}

.proof h2 {
  color: var(--ink);
}

.proof p {
  color: var(--ink-soft);
}

.proof li {
  border-color: var(--line);
  color: var(--ink-soft);
  background: #f7faf8;
}

.guides-section {
  background: #f8fafc;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.guide-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.guide-links a {
  display: flex;
  min-height: 190px;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 21px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.guide-links a:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(20, 46, 75, 0.09);
}

.guide-links a:nth-child(1),
.guide-links a:nth-child(4) {
  border-top: 3px solid rgba(0, 169, 154, 0.5);
}

.guide-links a:nth-child(2),
.guide-links a:nth-child(5) {
  border-top: 3px solid rgba(238, 128, 98, 0.5);
}

.guide-links a:nth-child(3),
.guide-links a:nth-child(6) {
  border-top: 3px solid rgba(21, 89, 214, 0.5);
}

.guide-links small {
  color: var(--blue);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.guide-links strong {
  margin-top: 23px;
  font-size: 18px;
  line-height: 1.35;
}

.guide-links span {
  margin-top: auto;
  padding-top: 15px;
  color: var(--muted);
  font-size: 11px;
}

.limits-section {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.limits {
  gap: 14px;
}

.limit {
  min-height: 160px;
  border-radius: 22px;
  background: #f8fafb;
}

.install-grid {
  max-width: 900px;
  margin-inline: auto;
}

.install-card {
  position: relative;
  min-height: 230px;
  padding: 30px;
}

.install-card::before {
  display: block;
  width: 44px;
  height: 5px;
  margin-bottom: 34px;
  border-radius: 99px;
  background: #34d399;
  content: "";
}

.install-card:last-child::before {
  background: #38bdf8;
}

.faq-list {
  max-width: 850px;
  margin-inline: auto;
}

.faq-list summary {
  padding: 22px 4px;
  font-size: 15px;
}

.faq-list p {
  padding-right: 38px;
  font-size: 13px;
}

.closing {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
  padding: 42px;
  color: var(--ink);
  background: #eef5ff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgba(20, 46, 75, 0.08);
}

.closing p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.closing h2 {
  color: var(--blue-deep);
}

.closing .btn.secondary {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.landing-page [id] {
  scroll-margin-top: 88px;
}

@media (max-width: 900px) {
  .en-nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 620px) {
  .hero {
    padding-top: 48px;
  }

  .hero h1 {
    font-size: clamp(38px, 11vw, 54px);
  }

  .hero-visual {
    min-height: 400px;
  }

  .section {
    padding: 68px 0;
  }

  .scene-grid,
  .steps,
  .proof,
  .limits,
  .install-grid {
    grid-template-columns: 1fr;
  }

  .hero-proof {
    grid-template-columns: 1fr;
    gap: 13px;
  }

  .guide-links {
    grid-template-columns: 1fr;
  }

  .scene-card {
    display: block;
    min-height: 0;
  }

  .scene-icon {
    margin-bottom: 26px;
  }

  .proof,
  .closing {
    padding: 25px 20px;
  }

  .closing {
    grid-template-columns: 1fr;
  }
}

/* English visual refinement */
:root {
  --ink: #0d2038;
  --ink-soft: #42556b;
  --muted: #6d7c8e;
  --blue: #1766e8;
  --blue-deep: #0a397f;
  --teal: #00a894;
  --paper: #f2f8ff;
  --surface: #ffffff;
  --line: rgba(13, 32, 56, 0.1);
}

html {
  background: #f8fbff;
}

body {
  background:
    radial-gradient(circle at 5% 2%, rgba(56, 139, 255, 0.11), transparent 34rem),
    radial-gradient(circle at 100% 20%, rgba(0, 196, 173, 0.075), transparent 32rem),
    linear-gradient(180deg, #ffffff 0%, #fbfdff 46%, #f8fffd 100%);
}

.site-header {
  border-bottom-color: rgba(13, 32, 56, 0.085);
  background: rgba(255, 255, 255, 0.94);
  box-shadow:
    0 10px 34px rgba(24, 86, 161, 0.055),
    0 1px 0 rgba(255, 255, 255, 0.9) inset;
  backdrop-filter: saturate(160%) blur(20px);
}

.nav-shell {
  min-height: 76px;
}

.brand {
  gap: 11px;
}

.brand img {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  box-shadow: 0 7px 18px rgba(15, 42, 72, 0.09);
}

.brand strong {
  font-size: 15px;
  letter-spacing: 0.025em;
}

.brand span {
  padding-left: 10px;
  border-left: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.en-nav {
  gap: 3px;
  padding: 5px;
  border: 1px solid rgba(13, 32, 56, 0.075);
  border-radius: 999px;
  background: #f5f8fb;
}

.en-nav a {
  min-height: 34px;
  padding: 8px 13px;
  border-radius: 999px;
  color: #536477;
  font-size: 11px;
  transition: color 0.2s ease, background 0.2s ease;
}

.en-nav a:hover {
  color: var(--ink);
  background: #fff;
}

.header-tools {
  gap: 9px;
}

.header-install {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 16px;
  border-radius: 999px;
  color: #fff;
  background: var(--blue);
  box-shadow: 0 8px 20px rgba(27, 95, 211, 0.2);
  font-size: 11px;
  font-weight: 800;
}

.back-link {
  min-height: 40px;
  color: #40536a;
  background: rgba(255, 255, 255, 0.74);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.back-link:hover {
  border-color: rgba(27, 95, 211, 0.28);
  background: #fff;
}

.landing-page .container {
  width: min(calc(100% - 48px), 1220px);
}

.hero {
  position: relative;
  padding: clamp(68px, 7.2vw, 96px) 0 78px;
  background:
    radial-gradient(circle at 3% 8%, rgba(54, 137, 255, 0.16), transparent 34rem),
    radial-gradient(circle at 95% 90%, rgba(0, 189, 166, 0.11), transparent 31rem),
    linear-gradient(145deg, #ffffff 0%, #f6fbff 54%, #f2fcfa 100%);
}

.hero::before {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(23, 102, 232, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 102, 232, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to right, #000, transparent 52%);
  content: "";
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  grid-template-columns: minmax(0, 0.92fr) minmax(390px, 1.08fr);
  gap: clamp(44px, 6vw, 82px);
}

.hero-copy .eyebrow {
  min-height: 32px;
  margin-bottom: 22px;
  border-color: rgba(27, 95, 211, 0.14);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 7px 20px rgba(20, 46, 75, 0.045);
}

.hero h1 {
  max-width: 720px;
  font-size: clamp(44px, 5vw, 70px);
  line-height: 1.01;
  letter-spacing: -0.06em;
}

.hero h1 span {
  max-width: 620px;
  margin-top: 15px;
  color: #24579b;
  font-size: 0.49em;
  line-height: 1.22;
  letter-spacing: -0.035em;
}

.hero-lead {
  max-width: 650px;
  margin-top: 25px;
  font-size: 16px;
  line-height: 1.82;
}

.hero-actions {
  gap: 11px;
  margin-top: 30px;
}

.hero-actions .btn {
  min-height: 51px;
  padding-inline: 22px;
  box-shadow: 0 10px 24px rgba(20, 46, 75, 0.08);
}

.hero-actions .btn:not(.secondary) {
  background: linear-gradient(135deg, #1766e8, #0b4ec6);
  box-shadow: 0 12px 28px rgba(23, 102, 232, 0.25);
}

.hero-proof {
  gap: 8px;
  margin-top: 30px;
  padding-top: 0;
  border-top: 0;
}

.hero-proof > div {
  position: relative;
  min-height: 76px;
  padding: 13px 14px 13px 30px;
  border: 1px solid rgba(13, 32, 56, 0.075);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 8px 24px rgba(31, 92, 164, 0.055);
}

.hero-proof > div::before {
  position: absolute;
  top: 18px;
  left: 14px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(11, 145, 133, 0.09);
  content: "";
}

.hero-proof strong {
  font-size: 11px;
  letter-spacing: 0.015em;
}

.hero-proof span {
  margin-top: 3px;
  font-size: 9.5px;
  line-height: 1.5;
}

.hero-visual {
  min-height: 606px;
  border: 6px solid rgba(255, 255, 255, 0.94);
  border-radius: 41px;
  outline: 1px solid rgba(13, 32, 56, 0.09);
  background:
    linear-gradient(180deg, rgba(7, 21, 38, 0.015), rgba(7, 21, 38, 0.34)),
    url("../assets/hero-product-bg.png") center / cover no-repeat;
  box-shadow:
    0 38px 90px rgba(18, 50, 86, 0.18),
    0 4px 14px rgba(18, 50, 86, 0.08);
}

.hero-visual::after {
  position: absolute;
  inset: 9px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 30px;
  content: "";
  pointer-events: none;
}

.hero-visual-label {
  top: 22px;
  left: 22px;
  padding: 11px 14px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.86);
}

.hero-alert {
  right: 22px;
  bottom: 22px;
  left: 22px;
  padding: 20px 21px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.93);
}

.hero-alert h2 {
  font-size: 23px;
  letter-spacing: -0.025em;
}

.hero-alert p {
  font-size: 10.5px;
}

.section {
  padding: clamp(76px, 8vw, 104px) 0;
}

.section-head {
  max-width: 820px;
  margin-bottom: 42px;
}

.section-head.center {
  max-width: 760px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 13px;
  color: #2460c7;
}

.section-kicker::before {
  width: 20px;
  height: 1px;
  background: currentColor;
  content: "";
}

.section-head h2 {
  color: #10243b;
  font-size: clamp(34px, 4.3vw, 50px);
  line-height: 1.12;
}

#scenes {
  background:
    radial-gradient(circle at 100% 14%, rgba(52, 145, 255, 0.075), transparent 28rem),
    linear-gradient(180deg, #ffffff, #fbfeff);
}

#how-it-works {
  background:
    radial-gradient(circle at 9% 70%, rgba(0, 188, 168, 0.065), transparent 25rem),
    #f9fcff;
}

.section-head p {
  max-width: 740px;
  margin-top: 17px;
  color: #4e6177;
  font-size: 15px;
  line-height: 1.78;
}

.scene-grid {
  gap: 17px;
}

.scene-card {
  --scene-accent: #009e8b;
  --scene-tint: rgba(0, 184, 158, 0.13);
  min-height: 296px;
  grid-template-columns: 104px minmax(0, 1fr);
  column-gap: 25px;
  padding: 28px;
  border: 1px solid rgba(13, 32, 56, 0.085);
  border-top: 1px solid rgba(13, 32, 56, 0.085);
  border-radius: 29px;
  background:
    radial-gradient(circle at 0% 100%, var(--scene-tint), transparent 48%),
    #fff;
  box-shadow: 0 16px 45px rgba(18, 50, 86, 0.055);
}

.scene-card:nth-child(1) {
  --scene-accent: #009e8b;
  --scene-tint: rgba(0, 184, 158, 0.13);
}

.scene-card:nth-child(2) {
  --scene-accent: #e14b4b;
  --scene-tint: rgba(235, 76, 76, 0.12);
}

.scene-card:nth-child(3) {
  --scene-accent: #dd4678;
  --scene-tint: rgba(235, 68, 126, 0.12);
}

.scene-card:nth-child(4) {
  --scene-accent: #078bd6;
  --scene-tint: rgba(7, 148, 225, 0.13);
}

.scene-card::before {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--scene-accent);
  box-shadow: 0 0 0 5px var(--scene-tint);
  content: "";
}

.scene-card:hover {
  border-color: color-mix(in srgb, var(--scene-accent) 18%, transparent);
  box-shadow: 0 28px 65px rgba(18, 50, 86, 0.1);
}

.scene-icon {
  width: 104px;
  height: 104px;
  border: 1px solid color-mix(in srgb, var(--scene-accent) 12%, transparent);
  border-radius: 31px;
  color: var(--scene-accent);
  background: color-mix(in srgb, var(--scene-accent) 12%, #fff);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 14px 30px rgba(18, 50, 86, 0.075);
}

.scene-icon svg {
  width: 62px;
  height: 62px;
  stroke-width: 1.6;
}

.scene-card small {
  padding-right: 16px;
  color: var(--scene-accent);
  font-size: 8.5px;
}

.scene-card h3 {
  color: #10243b;
  font-size: 21px;
  letter-spacing: -0.025em;
}

.scene-card p {
  color: #5a6b7e;
  font-size: 12.5px;
  line-height: 1.75;
}

.steps {
  gap: 14px;
  padding: 26px;
  border-color: rgba(13, 32, 56, 0.085);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 22px 58px rgba(18, 50, 86, 0.065);
}

.step {
  position: relative;
  min-height: 188px;
  padding: 22px;
  border-color: rgba(27, 95, 211, 0.1);
  border-radius: 21px;
  background: linear-gradient(160deg, #ffffff, #edf6ff);
}

.step b {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(27, 95, 211, 0.12);
  border-radius: 11px;
  color: var(--blue);
  background: #fff;
  box-shadow: 0 7px 18px rgba(20, 46, 75, 0.05);
}

.step h3 {
  margin-top: 31px;
  font-size: 16px;
}

.story-section {
  background:
    radial-gradient(circle at 3% 50%, rgba(21, 111, 244, 0.09), transparent 31rem),
    radial-gradient(circle at 100% 75%, rgba(0, 191, 167, 0.07), transparent 28rem),
    linear-gradient(135deg, #f6fbff, #fdfeff 52%, #f5fffd);
}

.proof {
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(32px, 5vw, 62px);
  padding: 34px;
  border-color: rgba(13, 32, 56, 0.085);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 30px 80px rgba(18, 50, 86, 0.09);
}

.proof-video {
  width: 100%;
  max-width: 360px;
  justify-self: center;
  border: 6px solid #101b2b;
  border-radius: 29px;
  box-shadow: 0 27px 60px rgba(5, 15, 29, 0.24);
}

.proof-copy {
  align-self: center;
  padding: 8px 2px;
}

.proof-copy h2 {
  max-width: 590px;
  font-size: clamp(33px, 4.2vw, 48px);
}

.proof-copy > p {
  max-width: 570px;
  font-size: 14px;
}

.proof-copy ul {
  display: grid;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.proof-copy li {
  position: relative;
  padding: 12px 14px 12px 37px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  border-radius: 14px;
  color: #42556b;
  background: #f7fafc;
  font-size: 12px;
}

.proof-copy li::before {
  position: absolute;
  top: 16px;
  left: 15px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(11, 145, 133, 0.09);
  content: "";
}

.guides-section {
  background:
    radial-gradient(circle at 88% 8%, rgba(0, 184, 166, 0.075), transparent 27rem),
    linear-gradient(180deg, #f8fcff, #fdfefe);
}

.guide-links {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.guide-links a {
  position: relative;
  min-height: 206px;
  padding: 25px;
  overflow: hidden;
  border-top: 1px solid rgba(13, 32, 56, 0.09);
  border-radius: 23px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 34px rgba(18, 50, 86, 0.04);
}

.guide-links a::after {
  position: absolute;
  top: 22px;
  right: 23px;
  color: #96a4b4;
  font-size: 17px;
  content: "↗";
  transition: color 0.2s ease, transform 0.2s ease;
}

.guide-links a:hover::after {
  color: var(--blue);
  transform: translate(2px, -2px);
}

.guide-links a:first-child {
  min-height: 230px;
  grid-column: 1 / -1;
  justify-content: center;
  padding: clamp(28px, 4vw, 42px);
  border: 1px solid rgba(27, 95, 211, 0.14);
  background:
    radial-gradient(circle at 86% 20%, rgba(0, 184, 158, 0.2), transparent 22rem),
    radial-gradient(circle at 10% 100%, rgba(45, 131, 255, 0.15), transparent 22rem),
    linear-gradient(135deg, #e9f4ff, #f8fcff 56%, #e9faf6);
}

.guide-links a:first-child small {
  color: #0b8177;
}

.guide-links a:first-child strong {
  max-width: 680px;
  margin-top: 18px;
  color: #103156;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.guide-links a:first-child span {
  color: #3f607d;
  font-size: 12.5px;
}

.guide-links small {
  font-size: 9px;
}

.guide-links strong {
  max-width: 90%;
  font-size: 19px;
  letter-spacing: -0.025em;
}

.guide-links span {
  font-size: 11.5px;
}

.guide-grid .guide-card:first-child {
  min-height: 280px;
  grid-column: 1 / -1;
  justify-content: center;
  padding: clamp(30px, 4vw, 42px);
  border-color: rgba(23, 102, 232, 0.14);
  background:
    radial-gradient(circle at 88% 26%, rgba(0, 184, 158, 0.19), transparent 21rem),
    radial-gradient(circle at 8% 100%, rgba(45, 131, 255, 0.14), transparent 22rem),
    linear-gradient(135deg, #e9f4ff, #f9fcff 58%, #e8faf6);
}

.guide-grid .guide-card:first-child h2 {
  max-width: 760px;
  margin-top: 16px;
  font-size: clamp(28px, 3.3vw, 38px);
  line-height: 1.2;
}

.guide-grid .guide-card:first-child p {
  max-width: 760px;
  color: #47617a;
  font-size: 13px;
}

.article-visual {
  margin: 0 0 34px;
  overflow: hidden;
  border: 1px solid rgba(13, 32, 56, 0.09);
  border-radius: 25px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(18, 50, 86, 0.07);
}

.article-visual img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
}

.article-visual figcaption {
  padding: 13px 17px;
  color: var(--muted);
  background: #f7fafc;
  font-size: 10.5px;
}

.article-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 22px 0 28px;
}

.article-points > div {
  padding: 18px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  border-radius: 17px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.97), rgba(240, 248, 255, 0.95));
}

.article-points strong,
.article-points span {
  display: block;
}

.article-points strong {
  color: var(--ink);
  font-size: 13px;
}

.article-points span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.65;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
  margin: 22px 0 30px;
}

.answer-card {
  position: relative;
  min-height: 170px;
  padding: 21px;
  border: 1px solid rgba(13, 32, 56, 0.085);
  border-radius: 19px;
  background:
    radial-gradient(circle at 100% 0%, rgba(45, 131, 255, 0.075), transparent 13rem),
    #ffffff;
  box-shadow: 0 9px 26px rgba(18, 50, 86, 0.04);
}

.answer-card > span {
  display: inline-grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 9px;
  color: var(--blue);
  background: #edf6ff;
  font-size: 9px;
  font-weight: 850;
}

.answer-card h3 {
  margin: 17px 0 7px;
  font-size: 16px;
}

.answer-card p {
  margin: 0;
  color: #53677d;
  font-size: 12.5px;
  line-height: 1.7;
}

.article-references {
  margin-top: 38px;
  padding: 21px 23px;
  border: 1px solid rgba(13, 32, 56, 0.08);
  border-radius: 18px;
  background: #f8fbfd;
}

.article-references h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

.article-references p,
.article-references li {
  color: var(--muted);
  font-size: 11.5px;
  line-height: 1.65;
}

.article-references ul {
  margin: 8px 0 0;
}

.limits {
  counter-reset: limit;
  gap: 14px;
}

.limit {
  counter-increment: limit;
  position: relative;
  min-height: 154px;
  padding: 24px 24px 24px 70px;
  border-color: rgba(13, 32, 56, 0.085);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.97), rgba(243, 249, 255, 0.95));
}

.limit::before {
  position: absolute;
  top: 23px;
  left: 23px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid rgba(27, 95, 211, 0.12);
  border-radius: 10px;
  color: var(--blue);
  background: #fff;
  content: counter(limit, decimal-leading-zero);
  font-size: 9px;
  font-weight: 850;
}

.limit h3 {
  font-size: 16px;
}

.limit p {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.7;
}

.limits-section {
  background:
    radial-gradient(circle at 8% 16%, rgba(23, 102, 232, 0.075), transparent 25rem),
    #ffffff;
}

.install-section {
  background:
    radial-gradient(circle at 18% 8%, rgba(48, 134, 255, 0.1), transparent 30rem),
    radial-gradient(circle at 88% 88%, rgba(0, 190, 165, 0.08), transparent 29rem),
    linear-gradient(180deg, #fbfdff, #f7fffd);
}

.install-grid {
  max-width: 980px;
  gap: 17px;
}

.install-card {
  display: flex;
  min-height: 410px;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border: 1px solid rgba(13, 32, 56, 0.085);
  border-radius: 28px;
  background:
    radial-gradient(circle at 100% 0%, rgba(0, 193, 151, 0.15), transparent 19rem),
    rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 48px rgba(18, 50, 86, 0.055);
}

.install-card.ios {
  background:
    radial-gradient(circle at 100% 0%, rgba(0, 155, 235, 0.15), transparent 19rem),
    rgba(255, 255, 255, 0.94);
}

.install-card::before {
  display: none;
}

.install-card-head {
  display: flex;
  align-items: center;
  gap: 15px;
}

.install-icon {
  display: grid;
  width: 54px;
  height: 54px;
  flex: none;
  place-items: center;
  border-radius: 17px;
  color: #087f6e;
  background: #e9faf4;
}

.install-card.ios .install-icon {
  color: #1678b5;
  background: #eaf6fe;
}

.install-icon svg {
  width: 31px;
  height: 31px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.install-card-head small,
.install-card-head h3 {
  display: block;
}

.install-card-head small {
  color: var(--muted);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.install-card h3 {
  margin-top: 2px;
  font-size: 22px;
  letter-spacing: -0.03em;
}

.install-card > p {
  min-height: 62px;
  margin: 20px 0 0;
  color: #53677d;
  font-size: 12.5px;
  line-height: 1.72;
}

.install-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 10px;
}

.install-facts span {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid rgba(13, 32, 56, 0.075);
  border-radius: 999px;
  color: #52667a;
  background: #f6f9fb;
  font-size: 9.5px;
  font-weight: 720;
}

.install-actions {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.install-actions .btn {
  width: 100%;
  min-height: 46px;
}

.install-card .install-qr {
  margin-top: auto;
  padding: 11px;
  border-color: rgba(13, 32, 56, 0.075);
  border-radius: 18px;
  background: #f7fafc;
}

.install-qr img {
  width: 94px;
  height: 94px;
}

.install-qr strong {
  font-size: 11.5px;
}

.install-qr span {
  font-size: 9.5px;
}

.faq-list {
  padding: 3px 26px;
  border: 1px solid rgba(13, 32, 56, 0.085);
  border-radius: 25px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 48px rgba(18, 50, 86, 0.045);
}

.faq-list details:last-child {
  border-bottom: 0;
}

.faq-list summary {
  position: relative;
  padding: 21px 42px 21px 2px;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 3px;
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid rgba(13, 32, 56, 0.09);
  border-radius: 50%;
  color: var(--blue);
  background: #f7fafc;
  content: "+";
  font-size: 15px;
  transform: translateY(-50%);
}

.faq-list details[open] summary::after {
  content: "−";
}

.closing {
  position: relative;
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: clamp(32px, 5vw, 52px);
  border: 1px solid rgba(27, 95, 211, 0.11);
  border-radius: 31px;
  background:
    radial-gradient(circle at 88% 28%, rgba(0, 191, 164, 0.14), transparent 20rem),
    radial-gradient(circle at 8% 100%, rgba(45, 130, 255, 0.12), transparent 24rem),
    linear-gradient(135deg, #f1f8ff, #ffffff 59%, #f0fff9);
  box-shadow: 0 24px 64px rgba(18, 50, 86, 0.075);
}

.closing::after {
  position: absolute;
  right: -75px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(27, 95, 211, 0.09);
  border-radius: 50%;
  box-shadow: 0 0 0 38px rgba(27, 95, 211, 0.025);
  content: "";
}

.closing > * {
  position: relative;
  z-index: 1;
}

.closing h2 {
  max-width: 760px;
  font-size: clamp(32px, 4.2vw, 48px);
}

.closing p {
  max-width: 680px;
  font-size: 13px;
  line-height: 1.75;
}

.site-footer {
  padding: 0 20px;
  border-top-color: rgba(13, 32, 56, 0.08);
  background: #fff;
}

.footer-shell {
  display: grid;
  width: min(calc(100% - 8px), 1220px);
  margin-inline: auto;
  grid-template-columns: auto 1fr;
  gap: 18px 34px;
  align-items: center;
  padding: 29px 0 34px;
}

.footer-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  color: var(--ink);
}

.footer-brand strong {
  font-size: 13px;
  letter-spacing: 0.03em;
}

.footer-brand span {
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-shell nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
}

.footer-shell nav a {
  color: #53677d;
  font-size: 10.5px;
  font-weight: 720;
}

.footer-shell small {
  grid-column: 1 / -1;
  padding-top: 18px;
  border-top: 1px solid rgba(13, 32, 56, 0.075);
  color: #7a8898;
  font-size: 9.5px;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(27, 95, 211, 0.28);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .en-nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero-visual {
    min-height: min(680px, 78vw);
  }
}

@media (max-width: 760px) {
  .landing-page .container {
    width: min(calc(100% - 32px), 1220px);
  }

  .scene-grid,
  .guide-links {
    grid-template-columns: 1fr;
  }

  .guide-links a:first-child {
    grid-column: auto;
  }

  .guide-grid .guide-card:first-child {
    grid-column: auto;
  }

  .article-points {
    grid-template-columns: 1fr;
  }

  .answer-grid {
    grid-template-columns: 1fr;
  }

  .proof {
    grid-template-columns: 1fr;
  }

  .proof-video {
    max-width: 390px;
  }

  .limits {
    grid-template-columns: 1fr;
  }

  .limit {
    min-height: 0;
  }
}

@media (max-width: 620px) {
  .nav-shell {
    min-height: 68px;
  }

  .brand span {
    display: none;
  }

  .header-install {
    min-height: 37px;
    padding-inline: 13px;
    font-size: 10px;
  }

  .header-tools .back-link {
    min-height: 37px;
    padding-inline: 11px;
    font-size: 10px;
  }

  .hero {
    padding: 49px 0 62px;
  }

  .hero h1 {
    font-size: clamp(40px, 12vw, 54px);
  }

  .hero h1 span {
    margin-top: 11px;
    font-size: 0.53em;
  }

  .hero-lead {
    font-size: 14.5px;
  }

  .hero-actions {
    display: grid;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-visual {
    min-height: 440px;
    border-width: 4px;
    border-radius: 31px;
  }

  .hero-visual::after {
    inset: 7px;
    border-radius: 23px;
  }

  .hero-alert {
    right: 13px;
    bottom: 13px;
    left: 13px;
    padding: 17px;
  }

  .hero-visual-label {
    top: 14px;
    left: 14px;
  }

  .section {
    padding: 66px 0;
  }

  .section-head {
    margin-bottom: 31px;
  }

  .section-head h2 {
    font-size: clamp(31px, 9vw, 41px);
  }

  .scene-card {
    min-height: 0;
    padding: 24px;
  }

  .scene-card::before {
    top: 24px;
    right: 24px;
  }

  .scene-icon {
    width: 92px;
    height: 92px;
  }

  .scene-icon svg {
    width: 54px;
    height: 54px;
  }

  .steps {
    padding: 17px;
  }

  .proof {
    padding: 22px 18px;
  }

  .proof-copy {
    padding: 2px;
  }

  .guide-links a,
  .guide-links a:first-child {
    min-height: 190px;
    padding: 23px;
  }

  .guide-links a:first-child strong {
    font-size: 25px;
  }

  .install-card {
    min-height: 0;
    padding: 23px;
  }

  .install-card > p {
    min-height: 0;
  }

  .install-card .install-qr {
    margin-top: 18px;
  }

  .faq-list {
    padding-inline: 18px;
  }

  .closing {
    padding: 29px 22px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 15px;
    padding-block: 25px 30px;
  }

  .footer-shell nav {
    justify-content: flex-start;
    gap: 15px;
  }

  .footer-shell small {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}