:root {
  color-scheme: dark;
  --bg: #061022;
  --bg-deep: #030b18;
  --surface: #09172a;
  --surface-strong: #0b1d35;
  --line: #1c3551;
  --line-bright: #176f9b;
  --text: #f7faff;
  --muted: #a3b4c9;
  --muted-strong: #c8d4e2;
  --cyan: #16b5ff;
  --cyan-bright: #55ceff;
  --mint: #43e5ad;
  --danger: #ff9fab;
  --shadow: 0 24px 80px rgba(0, 5, 14, 0.38);
  --container: 1180px;
  --content: 820px;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  font-family:
    Inter, "Segoe UI Variable", "Segoe UI", system-ui, -apple-system,
    BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 76% 8%, rgba(11, 139, 205, 0.18), transparent 28rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  font-size: 17px;
  line-height: 1.65;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(rgba(87, 202, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(87, 202, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
  content: "";
  pointer-events: none;
}

a {
  color: var(--cyan-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:hover {
  color: #a9ebff;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--cyan-bright);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  color: #00111e;
  background: var(--cyan-bright);
  font-weight: 800;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid rgba(49, 91, 128, 0.58);
  background: rgba(4, 14, 29, 0.9);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 20px;
  font-weight: 780;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand img {
  width: 43px;
  height: 43px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  position: relative;
  color: var(--muted-strong);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
}

.site-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: -12px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  content: "";
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 94px 0 104px;
  border-bottom: 1px solid rgba(32, 61, 90, 0.72);
}

.hero::after {
  position: absolute;
  z-index: -1;
  top: 8%;
  right: -11rem;
  width: 38rem;
  height: 38rem;
  border: 1px solid rgba(40, 187, 255, 0.14);
  border-radius: 50%;
  box-shadow:
    0 0 0 80px rgba(40, 187, 255, 0.03),
    0 0 0 160px rgba(40, 187, 255, 0.02);
  content: "";
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.75fr);
  align-items: center;
  gap: clamp(48px, 8vw, 112px);
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(48px, 6vw, 78px);
  font-weight: 790;
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.hero__lead {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--muted-strong);
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.58;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 760;
  text-decoration: none;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

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

.button--primary {
  color: #00111e;
  background: linear-gradient(180deg, #35c5ff, #0ba8ee);
  box-shadow: 0 13px 34px rgba(0, 149, 221, 0.2);
}

.button--primary:hover {
  color: #00111e;
  background: linear-gradient(180deg, #68d6ff, #1bb9ff);
}

.button--secondary {
  border-color: #1e92c8;
  color: var(--text);
  background: rgba(4, 18, 35, 0.5);
}

.button--secondary:hover {
  border-color: var(--cyan-bright);
  color: var(--text);
  background: rgba(16, 78, 111, 0.22);
}

.hero__note {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.product-frame {
  position: relative;
  width: min(100%, 430px);
  margin-inline: auto;
  padding: 18px;
  border: 1px solid rgba(54, 192, 255, 0.4);
  border-radius: 30px;
  background: linear-gradient(150deg, rgba(12, 42, 71, 0.85), rgba(4, 15, 30, 0.96));
  box-shadow: var(--shadow);
}

.product-frame::before {
  position: absolute;
  z-index: -1;
  inset: 12% 8% -4%;
  border-radius: 40%;
  background: rgba(0, 163, 236, 0.22);
  filter: blur(64px);
  content: "";
}

.product-frame img {
  width: 100%;
  height: auto;
  border-radius: 17px;
}

.section {
  padding: 96px 0;
  border-bottom: 1px solid rgba(32, 61, 90, 0.7);
}

.section--soft {
  background: linear-gradient(180deg, rgba(8, 29, 53, 0.35), rgba(3, 12, 25, 0.05));
}

.section__heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(300px, 1fr);
  gap: 64px;
  align-items: end;
  margin-bottom: 62px;
}

.section__heading h2,
.privacy-hero h1 {
  margin: 0;
  font-size: clamp(36px, 4.8vw, 58px);
  font-weight: 780;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.section__heading p {
  max-width: 650px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.feature-list li {
  position: relative;
  min-height: 190px;
  padding: 34px 42px 34px 0;
  border-bottom: 1px solid var(--line);
}

.feature-list li:nth-child(odd) {
  padding-right: 54px;
  border-right: 1px solid var(--line);
}

.feature-list li:nth-child(even) {
  padding-left: 54px;
}

.feature-list h3,
.steps h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 22px;
  line-height: 1.25;
}

.feature-list p,
.steps p {
  margin: 0;
  color: var(--muted);
}

.feature-index {
  display: block;
  margin-bottom: 22px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 820;
  letter-spacing: 0.12em;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  position: relative;
  padding: 0 48px 0 0;
}

.steps li:not(:last-child)::after {
  position: absolute;
  top: 25px;
  right: 24px;
  width: 48px;
  border-top: 1px dashed var(--line-bright);
  content: "";
}

.step-number {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  margin-bottom: 26px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan-bright);
  font-weight: 820;
}

.privacy-band {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.25fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: start;
}

.privacy-band h2 {
  margin: 0;
  font-size: clamp(36px, 4.5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.check-list {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 38px;
  color: var(--muted-strong);
}

.check-list li::before {
  position: absolute;
  top: 0.16em;
  left: 0;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border: 1px solid rgba(67, 229, 173, 0.6);
  border-radius: 50%;
  color: var(--mint);
  content: "✓";
  font-size: 14px;
  font-weight: 900;
}

.compatibility {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--line);
}

.compatibility article {
  padding: 36px;
  background: rgba(5, 18, 35, 0.96);
}

.compatibility h3 {
  margin: 0 0 12px;
  font-size: 21px;
}

.compatibility p {
  margin: 0;
  color: var(--muted);
}

.final-cta {
  padding: 88px 0 96px;
  text-align: center;
}

.final-cta h2 {
  max-width: 760px;
  margin: 0 auto;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.final-cta p {
  max-width: 650px;
  margin: 24px auto 34px;
  color: var(--muted);
}

.site-footer {
  padding: 34px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links a {
  color: var(--muted-strong);
}

.privacy-page {
  background:
    radial-gradient(circle at 50% 0%, rgba(11, 139, 205, 0.12), transparent 34rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

.privacy-hero {
  padding: 82px 0 58px;
  border-bottom: 1px solid var(--line);
}

.privacy-hero__inner {
  max-width: 920px;
}

.privacy-meta {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.privacy-intro {
  max-width: 820px;
  margin: 28px 0 0;
  color: var(--muted-strong);
  font-size: 19px;
}

.privacy-layout {
  display: grid;
  grid-template-columns: 290px minmax(0, var(--content));
  justify-content: space-between;
  gap: 70px;
  padding-top: 64px;
  padding-bottom: 96px;
}

.privacy-sidebar {
  align-self: start;
}

.privacy-sidebar__sticky {
  position: sticky;
  top: 108px;
  display: grid;
  gap: 18px;
}

.summary-panel,
.toc,
.deletion-box {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(6, 20, 38, 0.72);
}

.summary-panel,
.toc {
  padding: 24px;
}

.summary-panel h2,
.toc h2 {
  margin: 0 0 18px;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.summary-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.summary-list li {
  position: relative;
  padding-left: 27px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.4;
}

.summary-list li::before {
  position: absolute;
  top: 0.08em;
  left: 0;
  color: var(--mint);
  content: "✓";
  font-weight: 900;
}

.toc ol {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  counter-reset: toc;
  list-style: none;
}

.toc li {
  counter-increment: toc;
}

.toc a {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
  text-decoration: none;
}

.toc a::before {
  color: var(--cyan);
  content: counter(toc) ".";
  font-weight: 800;
}

.toc a:hover {
  color: var(--text);
}

.privacy-content {
  min-width: 0;
}

.privacy-section {
  padding: 0 0 48px;
  margin: 0 0 48px;
  border-bottom: 1px solid var(--line);
}

.privacy-section:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.privacy-section h2 {
  margin: 0 0 22px;
  color: var(--cyan-bright);
  font-size: clamp(25px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.privacy-section h3 {
  margin: 30px 0 10px;
  color: var(--text);
  font-size: 19px;
}

.privacy-section p,
.privacy-section li {
  color: var(--muted-strong);
}

.privacy-section p {
  margin: 0 0 18px;
}

.privacy-section ul,
.privacy-section ol {
  display: grid;
  gap: 12px;
  padding-left: 24px;
}

.privacy-section strong {
  color: var(--text);
}

.data-table {
  width: 100%;
  margin: 28px 0;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 15px;
}

.data-table th,
.data-table td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table tr:last-child td {
  border-bottom: 0;
}

.data-table th {
  width: 32%;
  color: var(--text);
  background: rgba(11, 37, 65, 0.75);
}

.data-table td {
  color: var(--muted-strong);
  background: rgba(5, 19, 36, 0.6);
}

.notice {
  margin: 26px 0;
  padding: 20px 22px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--muted-strong);
  background: rgba(11, 66, 96, 0.2);
}

.deletion-box {
  margin-top: 26px;
  padding: 26px;
}

.deletion-box h3 {
  margin-top: 0;
}

.contact-block {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  margin-top: 22px;
}

@media (max-width: 980px) {
  .site-nav {
    gap: 18px;
  }

  .hero__grid,
  .privacy-band,
  .privacy-layout {
    grid-template-columns: 1fr;
  }

  .hero__copy {
    max-width: 760px;
  }

  .product-frame {
    width: min(100%, 400px);
  }

  .privacy-sidebar__sticky {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

  .privacy-layout {
    gap: 42px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .site-header__inner {
    min-height: 70px;
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding-block: 12px;
  }

  .brand {
    font-size: 18px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .site-nav {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 5px;
  }

  .site-nav a {
    flex: 0 0 auto;
    font-size: 13px;
  }

  .site-nav a[aria-current="page"]::after {
    bottom: -5px;
  }

  .hero {
    padding: 64px 0 72px;
  }

  .hero__grid {
    gap: 52px;
  }

  .hero h1 {
    font-size: clamp(42px, 13vw, 62px);
  }

  .section {
    padding: 72px 0;
  }

  .section__heading {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 42px;
  }

  .feature-list,
  .steps,
  .compatibility,
  .privacy-sidebar__sticky {
    grid-template-columns: 1fr;
  }

  .feature-list li,
  .feature-list li:nth-child(odd),
  .feature-list li:nth-child(even) {
    min-height: auto;
    padding: 28px 0;
    border-right: 0;
  }

  .steps {
    gap: 46px;
  }

  .steps li {
    padding-right: 0;
  }

  .steps li:not(:last-child)::after {
    display: none;
  }

  .compatibility article {
    padding: 28px;
  }

  .privacy-hero {
    padding: 58px 0 42px;
  }

  .privacy-layout {
    padding-top: 42px;
    padding-bottom: 70px;
  }

  .toc {
    display: none;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tr {
    border-bottom: 1px solid var(--line);
  }

  .data-table tr:last-child {
    border-bottom: 0;
  }

  .data-table th,
  .data-table td {
    border-bottom: 0;
  }

  .data-table th {
    padding-bottom: 6px;
  }

  .data-table td {
    padding-top: 6px;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}