:root {
  color-scheme: light;
  --navy: #132a3a;
  --navy-deep: #0c1e2b;
  --ink: #183142;
  --text: #415966;
  --muted: #687d87;
  --teal: #128678;
  --teal-dark: #0c6b61;
  --teal-soft: #e9f7f4;
  --blue-soft: #eef6fa;
  --gold-soft: #fff8e7;
  --paper: #f7fafb;
  --white: #fff;
  --line: #dce7eb;
  --shadow: 0 20px 55px rgba(19, 42, 58, .1);
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  color: var(--navy);
  font-weight: 800;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #fff;
  box-shadow: 0 12px 28px rgba(18, 134, 120, .22);
}

.button.primary:hover {
  background: var(--teal-dark);
}

.button.ghost {
  border-color: #cbdce2;
  background: rgba(255, 255, 255, .8);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(64px, 9vw, 112px) 0 72px;
  background:
    radial-gradient(circle at 88% 18%, rgba(18, 134, 120, .13), transparent 27%),
    linear-gradient(145deg, #f8fcfd 0%, #edf6f7 55%, #f8fafb 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: -150px;
  right: -100px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(18, 134, 120, .12);
  border-radius: 50%;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(380px, .8fr);
  gap: clamp(40px, 7vw, 82px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  color: var(--teal-dark);
  font-size: .86rem;
  font-weight: 900;
  letter-spacing: .06em;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  border-radius: 999px;
  background: var(--teal);
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--navy);
  line-height: 1.35;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  letter-spacing: -.045em;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.85rem, 4vw, 3rem);
  letter-spacing: -.025em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

p {
  margin-top: 0;
}

.hero-lead {
  max-width: 650px;
  margin-bottom: 28px;
  color: #3d5968;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  font-weight: 600;
}

.hero-lead strong {
  color: var(--teal-dark);
}

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

.hero-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.hero-flow li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 11px 8px 8px;
  border: 1px solid #d3e5e7;
  border-radius: 999px;
  background: rgba(255, 255, 255, .72);
  color: var(--navy);
  font-size: .86rem;
  font-weight: 800;
}

.hero-flow li span {
  display: grid;
  width: 23px;
  height: 23px;
  place-items: center;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  font-size: .76rem;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 28px 0 0;
  padding: 0;
  color: #4c6672;
  font-size: .92rem;
  font-weight: 800;
  list-style: none;
}

.trust-row li::before {
  content: "✓";
  margin-right: 7px;
  color: var(--teal);
  font-weight: 900;
}

.hero-visual {
  position: relative;
}

.hero-frame {
  overflow: hidden;
  border: 1px solid #d2e2e7;
  border-radius: 26px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(19, 42, 58, .16);
}

.hero-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 1.22 / 1;
  object-fit: cover;
  object-position: 63% center;
}

.hero-frame.device-frame {
  background: #f4f5f7;
}

.hero-frame.device-frame img {
  object-fit: contain;
  object-position: center;
}

.assurance {
  position: relative;
  z-index: 2;
  margin-top: -30px;
}

.assurance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}

.assurance-item {
  padding: 24px 27px;
  border-right: 1px solid var(--line);
}

.assurance-item:last-child {
  border-right: 0;
}

.assurance-item strong {
  display: block;
  margin-bottom: 3px;
  color: var(--navy);
}

.assurance-item span {
  color: var(--muted);
  font-size: .9rem;
}

.section {
  padding: clamp(72px, 9vw, 112px) 0;
}

.section.white {
  background: #fff;
}

.section.soft {
  background: var(--blue-soft);
}

.section-heading {
  max-width: 730px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.feature-grid,
.use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card,
.use-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(19, 42, 58, .06);
}

.feature-icon {
  display: inline-grid;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 14px;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-size: 1.25rem;
  font-weight: 900;
}

.feature-card p,
.use-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: .95rem;
}

.screen-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  align-items: start;
}

.screen-shot {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow);
}

.screen-shot img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.screen-copy {
  width: min(100%, 760px);
  margin-inline: auto;
}

.check-list {
  display: grid;
  gap: 15px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 31px;
  color: #425c68;
  font-weight: 700;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  top: .05em;
  left: 0;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: var(--teal-soft);
  color: var(--teal-dark);
  font-size: .78rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: setup;
}

.step {
  position: relative;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  counter-increment: setup;
}

.step::before {
  content: "0" counter(setup);
  display: block;
  margin-bottom: 20px;
  color: var(--teal);
  font-size: 1.5rem;
  font-weight: 900;
}

.step p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: .95rem;
}

.center-action {
  margin: 32px 0 0;
  text-align: center;
}

.honesty-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.honesty-card {
  padding: clamp(26px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
}

.honesty-card.can {
  border-top: 5px solid var(--teal);
}

.honesty-card.cannot {
  border-top: 5px solid #d6a94d;
}

.honesty-card ul {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.honesty-card li {
  padding-left: 22px;
  position: relative;
}

.honesty-card li::before {
  position: absolute;
  left: 0;
  color: var(--teal);
  content: "✓";
  font-weight: 900;
}

.honesty-card.cannot li::before {
  color: #a67822;
  content: "―";
}

.package {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(320px, .55fr);
  gap: 28px;
}

.package-main,
.package-side {
  padding: clamp(30px, 5vw, 48px);
  border-radius: 22px;
}

.package-main {
  color: #dce9ed;
  background: linear-gradient(145deg, var(--navy-deep), #173d4d);
  box-shadow: var(--shadow);
}

.package-main h2,
.package-main h3 {
  color: #fff;
}

.package-main .eyebrow {
  color: #8ed7cc;
}

.package-list {
  display: grid;
  gap: 13px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.package-list li {
  padding: 13px 0 0 25px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  position: relative;
}

.package-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #7dd3c7;
  font-weight: 900;
}

.package-side {
  border: 1px solid #eadcb8;
  background: var(--gold-soft);
}

.package-side p {
  color: #6f654d;
}

.package-side .important {
  margin: 22px 0 0;
  padding: 16px;
  border-radius: 14px;
  background: #fff;
  color: #594b2c;
  font-weight: 800;
}

.faq-list {
  display: grid;
  max-width: 850px;
  gap: 12px;
  margin-inline: auto;
}

details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

summary {
  position: relative;
  padding: 18px 52px 18px 20px;
  color: var(--navy);
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 20px;
  color: var(--teal);
  font-size: 1.35rem;
  transform: translateY(-50%);
}

details[open] summary::after {
  content: "−";
}

details p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--muted);
}

.line-section {
  background: linear-gradient(145deg, #eaf8f5, #f5fbfa);
}

.line-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: clamp(40px, 8vw, 90px);
  align-items: center;
  max-width: 920px;
}

.line-copy .button {
  margin-top: 8px;
}

.requirements {
  margin: 26px 0 18px;
  padding: 24px;
  border: 1px solid #cce5df;
  border-radius: 18px;
  background: rgba(255, 255, 255, .82);
}

.requirements h3 {
  margin-bottom: 16px;
  font-size: 1.25rem;
}

.requirements ul {
  display: grid;
  gap: 15px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.requirements li {
  position: relative;
  padding-left: 31px;
}

.requirements li::before {
  content: "✓";
  position: absolute;
  top: .08em;
  left: 0;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  background: #dff3ee;
  color: var(--teal-dark);
  font-size: .76rem;
  font-weight: 900;
}

.requirements strong,
.requirements span {
  display: block;
}

.requirements strong {
  color: var(--navy);
}

.requirements span {
  margin-top: 2px;
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.65;
}

.shared-network-note {
  color: #58717c;
  font-size: .9rem;
}

.line-card {
  padding: 22px;
  border: 1px solid #cce5df;
  border-radius: 22px;
  background: #fff;
  box-shadow: var(--shadow);
  text-align: center;
}

.line-card img {
  width: min(100%, 168px);
  height: auto;
  margin: 0 auto 12px;
}

.line-card strong {
  display: block;
  color: var(--navy);
}

.line-card span {
  color: var(--muted);
  font-size: .84rem;
}

.site-footer {
  padding: 28px 0;
  color: #b7c8d0;
  background: var(--navy-deep);
  font-size: .88rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: #dce7eb;
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .screen-grid,
  .package,
  .line-wrap {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 650px;
  }

  .feature-grid,
  .use-grid,
  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .hero {
    padding-top: 48px;
  }

  .hero-grid {
    gap: 38px;
  }

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

  .assurance {
    margin-top: 28px;
  }

  .assurance-grid,
  .honesty-grid {
    grid-template-columns: 1fr;
  }

  .assurance-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .assurance-item:last-child {
    border-bottom: 0;
  }

  .line-card {
    width: min(100%, 280px);
    margin-inline: auto;
  }

  .line-card img {
    width: 150px;
  }

  .screen-grid {
    gap: 32px;
  }

  .screen-shot {
    border-radius: 14px;
  }

}