:root {
  --blue: #0757f9;
  --blue-deep: #033cc2;
  --blue-soft: #eaf2ff;
  --ink: #111827;
  --muted: #687386;
  --line: #e8edf5;
  --card: #ffffff;
  --bg: #f3f6fb;
  --green: #08b68b;
  --orange: #ffae2b;
  --shadow: 0 18px 42px rgba(24, 43, 77, 0.14);
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  background:
    linear-gradient(180deg, #dfe7f2 0, #f7f9fd 420px),
    var(--bg);
  color: var(--ink);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  font: inherit;
}

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

code {
  padding: 3px 7px;
  border-radius: 8px;
  color: var(--blue);
  background: var(--blue-soft);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1120px, calc(100% - 28px));
  min-height: 68px;
  padding: 10px 12px;
  border: 1px solid rgba(232, 237, 245, 0.8);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 16px 40px rgba(24, 43, 77, 0.12);
  transform: translateX(-50%);
  backdrop-filter: blur(16px);
}

.brand,
.site-nav,
.hero-actions,
.trust-row,
.phone-top,
.phone-icons,
.balance-card,
.app-banner,
.service-card,
.download-panel {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  min-width: 200px;
}

.brand-mark,
.sol-word {
  font-weight: 950;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(155deg, var(--blue), var(--blue-deep));
  box-shadow: 0 10px 24px rgba(7, 87, 249, 0.22);
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.site-nav {
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--blue);
}

.header-cta,
.primary-cta,
.secondary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 18px;
  font-weight: 900;
  white-space: nowrap;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.header-cta,
.primary-cta {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 12px 24px rgba(7, 87, 249, 0.24);
}

.secondary-cta {
  color: var(--blue);
  background: var(--blue-soft);
}

.header-cta:hover,
.primary-cta:hover,
.secondary-cta:hover {
  transform: translateY(-1px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, 430px);
  gap: 64px;
  width: min(1120px, calc(100% - 36px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 132px 0 72px;
  align-items: center;
}

.hero-copy {
  max-width: 640px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 950;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(48px, 7vw, 82px);
  line-height: 1.04;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  font-size: 20px;
  letter-spacing: 0;
}

.hero-text {
  max-width: 590px;
  margin-top: 22px;
  color: #4c596c;
  font-size: 18px;
  line-height: 1.75;
  word-break: keep-all;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.trust-row {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.trust-row span {
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 19px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 800;
}

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

.phone-wrap {
  display: grid;
  place-items: center;
}

.phone {
  width: min(100%, 430px);
  overflow: hidden;
  border: 10px solid #111827;
  border-radius: 38px;
  background: var(--bg);
  box-shadow: 0 30px 70px rgba(17, 24, 39, 0.22);
}

.phone-hero {
  min-height: 335px;
  padding: 22px 20px 0;
  color: #fff;
  background:
    radial-gradient(circle at 78% 18%, rgba(255, 255, 255, 0.18) 0 16%, transparent 17%),
    linear-gradient(155deg, #064dff 0%, var(--blue) 54%, var(--blue-deep) 100%);
}

.phone-top {
  justify-content: space-between;
}

.sol-word {
  font-size: 30px;
}

.phone-icons {
  gap: 8px;
}

.phone-icons span {
  width: 38px;
  height: 38px;
  border-radius: 19px;
  background: rgba(255, 255, 255, 0.16);
}

.phone-hero > p {
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  font-weight: 800;
}

.phone-hero h2 {
  margin-top: 10px;
  font-size: 32px;
}

.balance-card {
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding: 20px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(12px);
}

.balance-card span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
  font-weight: 800;
}

.balance-card strong {
  display: block;
  margin-top: 8px;
  font-size: 25px;
}

.balance-card button {
  min-width: 66px;
  height: 36px;
  border-radius: 18px;
  color: var(--blue);
  background: #fff;
  font-weight: 900;
}

.phone-body {
  position: relative;
  z-index: 2;
  margin-top: -26px;
  padding: 20px;
  border-radius: 26px 26px 0 0;
  background: var(--bg);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
  padding: 14px 10px;
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.quick-grid span {
  display: grid;
  place-items: center;
  min-height: 86px;
  color: #263247;
  font-size: 12px;
  font-weight: 900;
  line-height: 1.35;
  text-align: center;
}

.icon,
.feature-icon {
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--blue-soft);
}

.icon {
  width: 38px;
  height: 38px;
  margin: 0 auto 8px;
}

.icon::before,
.feature-icon::before {
  content: "";
  width: 18px;
  height: 18px;
  background: var(--blue);
  mask: var(--mask) center / contain no-repeat;
}

.account {
  --mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 10.5 12 5l9 5.5V13H3v-2.5Zm2 4h3v4H5v-4Zm5.5 0h3v4h-3v-4Zm5.5 0h3v4h-3v-4ZM3 20h18v2H3v-2Z'/%3E%3C/svg%3E");
}

.send {
  --mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='m3 12 18-9-5 18-4-7-9-2Zm8.3.4 2.8 4.9 2.7-9.8-10 5 4.5-.1Z'/%3E%3C/svg%3E");
}

.chart {
  --mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4 19V5h16v14H4Zm3-3h2V9H7v7Zm4 0h2v-4h-2v4Zm4 0h2V7h-2v9Z'/%3E%3C/svg%3E");
}

.doc {
  --mask: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 2h9l5 5v15H6V2Zm8 1.8V8h4.2L14 3.8ZM8 12h8v2H8v-2Zm0 4h8v2H8v-2Z'/%3E%3C/svg%3E");
}

.app-banner {
  justify-content: space-between;
  width: 100%;
  margin-top: 18px;
  padding: 18px;
  border-radius: 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #0438bf);
}

.app-banner small,
.app-banner strong {
  display: block;
}

.app-banner small {
  color: rgba(255, 255, 255, 0.78);
  font-weight: 900;
}

.app-banner strong {
  margin-top: 7px;
  font-size: 20px;
}

.app-banner img {
  width: 70px;
  height: 70px;
}

.service-card {
  gap: 12px;
  min-height: 68px;
  margin-top: 10px;
  padding: 16px;
  border-radius: 18px;
  background: #fff;
}

.service-card p {
  flex: 1;
  color: var(--ink);
  font-weight: 800;
}

.service-card strong {
  font-size: 14px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.blue {
  background: var(--blue);
}

.dot.green {
  background: var(--green);
}

.service-section,
.download-panel {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
}

.service-section {
  padding: 42px 0 74px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 26px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid article {
  min-height: 248px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(24, 43, 77, 0.08);
}

.feature-icon {
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
}

.feature-grid p,
.download-panel p {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.68;
  word-break: keep-all;
}

.download-panel {
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 56px;
  padding: 30px;
  border-radius: 28px;
  color: #fff;
  background: linear-gradient(150deg, #0860ff, #217cff 60%, #05a3e8);
  box-shadow: var(--shadow);
}

.download-panel > div {
  max-width: 520px;
}

.download-panel .eyebrow,
.download-panel p {
  color: rgba(255, 255, 255, 0.8);
}

.download-panel code {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.download-panel .primary-cta {
  color: var(--blue);
  background: #fff;
  box-shadow: none;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(130px, 1fr));
  gap: 10px;
  min-width: 310px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps li {
  min-height: 54px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.14);
  font-weight: 900;
}

.steps span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 14px;
  color: var(--blue);
  background: #fff;
}

@media (max-width: 980px) {
  .site-header {
    position: absolute;
  }

  .site-nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 42px;
    padding-top: 116px;
  }

  .hero-copy {
    max-width: none;
  }

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

  .download-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .steps {
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    top: 10px;
    width: calc(100% - 20px);
    min-height: 62px;
    border-radius: 22px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 16px;
    font-size: 14px;
  }

  .header-cta {
    min-height: 42px;
    padding-inline: 12px;
    border-radius: 16px;
    font-size: 14px;
  }

  .hero,
  .service-section,
  .download-panel {
    width: calc(100% - 24px);
  }

  .hero {
    min-height: auto;
    padding: 100px 0 48px;
  }

  h1 {
    font-size: clamp(40px, 13vw, 56px);
  }

  .hero-text {
    font-size: 16px;
  }

  .phone {
    border-width: 7px;
    border-radius: 32px;
  }

  .phone-hero {
    min-height: 326px;
  }

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

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

  .feature-grid article {
    min-height: 0;
  }

  .download-panel {
    padding: 24px;
  }
}