:root {
  --navy: #123d6b;
  --blue: #185c9d;
  --sky: #00a7eb;
  --gold: #f6ab00;
  --coral: #e04237;
  --ink: #10263d;
  --muted: #587086;
  --line: #d9e5ee;
  --paper: #ffffff;
  --mist: #f4f8fb;
  --soft-blue: #e9f4fb;
  --radius-lg: 28px;
  --radius-md: 18px;
  --shadow: 0 18px 48px rgba(15, 59, 103, 0.12);
  color-scheme: light;
  font-family:
    "Pretendard Variable",
    Pretendard,
    "Apple SD Gothic Neo",
    "Noto Sans KR",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  word-break: keep-all;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  z-index: 100;
  left: 16px;
  top: -56px;
  padding: 10px 14px;
  color: #fff;
  background: var(--navy);
  border-radius: 10px;
  text-decoration: none;
}

.skip-link:focus {
  top: 16px;
}

.shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(217, 229, 238, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner,
.footer-inner,
.privacy-callout-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-inner {
  min-height: 80px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  text-decoration: none;
}

.brand img {
  width: 52px;
  height: 54px;
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.15;
}

.brand strong {
  font-size: 16px;
  letter-spacing: -0.04em;
}

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

nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

nav a {
  color: #3a5369;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

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

.hero {
  overflow: hidden;
  padding: 86px 0 76px;
  background:
    radial-gradient(circle at 83% 20%, rgba(0, 167, 235, 0.17), transparent 24rem),
    radial-gradient(circle at 4% 75%, rgba(246, 171, 0, 0.17), transparent 22rem),
    linear-gradient(135deg, #f7fbfe 0%, #eef7fc 56%, #fdfcf8 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
  align-items: center;
  gap: clamp(40px, 7vw, 90px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero h1,
.section-heading h2,
.install-card h2,
.privacy-callout h2 {
  margin: 0;
  color: var(--navy);
  font-weight: 800;
  letter-spacing: -0.07em;
  line-height: 1.18;
}

.hero h1 {
  max-width: 700px;
  font-size: clamp(39px, 5vw, 66px);
}

.hero-text {
  max-width: 600px;
  margin: 24px 0 0;
  color: #496277;
  font-size: 18px;
}

.hero-text strong {
  color: var(--blue);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.button:hover:not(.is-disabled) {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 10px 22px rgba(24, 92, 157, 0.25);
}

.button-primary:hover:not(.is-disabled) {
  background: var(--navy);
}

.button-secondary {
  color: var(--blue);
  background: #fff;
  border: 1px solid #bad3e5;
}

.button-secondary:hover {
  background: var(--soft-blue);
}

.button.is-disabled {
  cursor: not-allowed;
  color: #63768a;
  background: #dce7ee;
  box-shadow: none;
}

.release-note {
  margin: 13px 0 0;
  color: #63768a;
  font-size: 13px;
}

.hero-panel {
  position: relative;
  padding: 24px;
  overflow: hidden;
  color: #183653;
  background: #fff;
  border: 1px solid rgba(198, 219, 235, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-panel::after {
  position: absolute;
  right: -42px;
  bottom: -75px;
  width: 200px;
  height: 200px;
  content: "";
  background: linear-gradient(135deg, var(--gold), var(--coral));
  border-radius: 50%;
  opacity: 0.12;
}

.panel-topline,
.preview-meta,
.draft-preview p {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  font-size: 13px;
  font-weight: 800;
}

.panel-topline {
  color: #315775;
}

.panel-date {
  margin-left: auto;
  color: #7890a4;
  font-size: 12px;
  font-weight: 600;
}

.online-dot {
  width: 8px;
  height: 8px;
  background: #2fad71;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(47, 173, 113, 0.13);
}

.metric-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

.metric {
  display: grid;
  gap: 1px;
  padding: 16px;
  background: #f1f7fb;
  border-radius: 16px;
}

.metric-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #1979bb);
}

.metric span,
.metric small {
  font-size: 12px;
  font-weight: 700;
}

.metric strong {
  font-size: 32px;
  line-height: 1.2;
}

.message-preview,
.draft-preview {
  position: relative;
  z-index: 1;
  margin-top: 14px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.message-preview {
  display: flex;
  gap: 11px;
}

.preview-avatar {
  display: grid;
  flex: 0 0 auto;
  width: 35px;
  height: 35px;
  place-items: center;
  color: #fff;
  background: #1d6aa8;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 800;
}

.preview-meta {
  color: #254b6b;
}

.preview-meta span {
  color: #8a9cad;
  font-weight: 500;
}

.message-preview p:not(.preview-meta) {
  margin: 5px 0 9px;
  color: #4d6579;
  font-size: 13px;
  line-height: 1.55;
}

.tag {
  display: inline-flex;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
}

.tag-praise {
  color: #187143;
  background: #daf5e6;
}

.draft-preview {
  color: #176887;
  background: #eefaff;
  border-color: #c8ebf8;
}

.draft-preview p {
  color: #2580a1;
}

.draft-preview span {
  display: block;
  margin-top: 5px;
  color: #37677a;
  font-size: 13px;
  line-height: 1.5;
}

.trust-strip {
  padding: 26px 0;
  color: #dbeafb;
  background: var(--navy);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.trust-grid div {
  display: grid;
  gap: 3px;
  padding-left: 20px;
  border-left: 2px solid rgba(0, 167, 235, 0.8);
}

.trust-grid strong {
  color: #fff;
  font-size: 15px;
}

.trust-grid span {
  font-size: 13px;
}

.section {
  padding: 104px 0;
}

.section-heading {
  max-width: 710px;
}

.section-heading h2,
.install-card h2,
.privacy-callout h2 {
  font-size: clamp(31px, 4vw, 48px);
}

.section-heading > p:last-child {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-heading.centered {
  margin: 0 auto;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 42px;
}

.feature-card {
  min-height: 245px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.feature-card:hover {
  border-color: #98c9e5;
  box-shadow: 0 14px 30px rgba(24, 92, 157, 0.08);
}

.feature-number {
  display: grid;
  width: 35px;
  height: 35px;
  place-items: center;
  color: var(--blue);
  background: var(--soft-blue);
  border-radius: 10px;
  font-size: 13px;
  font-weight: 900;
}

.feature-card h3 {
  margin: 30px 0 8px;
  color: var(--navy);
  font-size: 19px;
  letter-spacing: -0.04em;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.workflow {
  padding: 100px 0;
  background:
    linear-gradient(90deg, rgba(24, 92, 157, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(24, 92, 157, 0.04) 1px, transparent 1px),
    #f6fafc;
  background-size: 38px 38px;
}

.workflow-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 980px;
  margin: 42px auto 0;
  padding: 0;
  list-style: none;
}

.workflow-list li {
  position: relative;
  min-height: 190px;
  padding: 25px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 26px rgba(21, 70, 112, 0.07);
}

.workflow-list li::after {
  position: absolute;
  top: 50%;
  right: -15px;
  z-index: 1;
  width: 30px;
  height: 2px;
  content: "";
  background: var(--sky);
}

.workflow-list li:last-child::after {
  display: none;
}

.workflow-list li > span {
  display: grid;
  width: 37px;
  height: 37px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 900;
}

.workflow-list strong {
  display: block;
  margin-top: 24px;
  color: var(--navy);
  font-size: 18px;
}

.workflow-list p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.install-card {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 48px;
  padding: clamp(30px, 6vw, 62px);
  color: #d9eaff;
  background: linear-gradient(135deg, var(--navy), #0e528a);
  border-radius: var(--radius-lg);
}

.install-card .eyebrow {
  color: #7bd6ff;
}

.install-card h2 {
  color: #fff;
}

.install-steps {
  margin: 26px 0 0;
  padding-left: 22px;
}

.install-steps li {
  padding-left: 5px;
  margin-top: 8px;
}

.install-caution {
  margin: 22px 0 0;
  padding: 13px 15px;
  color: #fff0c3;
  background: rgba(0, 0, 0, 0.15);
  border-left: 3px solid var(--gold);
  border-radius: 0 10px 10px 0;
  font-size: 13px;
}

.release-card {
  align-self: center;
  padding: 28px;
  color: #2c4d66;
  background: #fff;
  border-radius: var(--radius-md);
}

.release-label {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.release-card strong {
  display: block;
  margin-top: 8px;
  color: var(--navy);
  font-size: 27px;
  letter-spacing: -0.04em;
}

.release-card p {
  margin: 8px 0 17px;
  color: var(--muted);
  font-size: 13px;
}

.text-link {
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
}

.privacy-callout {
  padding: 80px 0;
  color: #d9eaff;
  background: #102d4d;
}

.privacy-callout h2 {
  color: #fff;
}

.privacy-callout-inner > div {
  flex: 1;
}

.privacy-callout p:not(.eyebrow) {
  max-width: 530px;
  margin: 0 0 20px auto;
  font-size: 15px;
}

.button-on-dark {
  min-height: 46px;
  color: var(--navy);
  background: #fff;
}

.button-on-dark:hover {
  background: #dff3ff;
}

.site-footer {
  padding: 28px 0;
  color: #60778a;
  background: #f6fafc;
  font-size: 13px;
}

.footer-brand {
  color: var(--navy);
  font-weight: 800;
}

.footer-brand img {
  width: 38px;
  height: 40px;
  object-fit: contain;
}

.footer-links {
  display: flex;
  gap: 15px;
}

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

.footer-links a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.site-footer p {
  margin: 0;
}

/* 개인정보 안내 페이지 */
.page-hero {
  padding: 74px 0 56px;
  background: linear-gradient(135deg, #eef7fc, #fffdf7);
}

.page-hero .shell {
  max-width: 880px;
}

.page-hero h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(35px, 5vw, 56px);
  letter-spacing: -0.07em;
  line-height: 1.18;
}

.page-hero p:last-child {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.policy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 56px;
  padding: 72px 0 100px;
}

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

.policy-content section {
  padding: 0 0 37px;
  margin-bottom: 37px;
  border-bottom: 1px solid var(--line);
}

.policy-content h2 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 24px;
  letter-spacing: -0.05em;
}

.policy-content p,
.policy-content li {
  color: #4c6579;
}

.policy-content p {
  margin: 0;
}

.policy-content ul {
  display: grid;
  gap: 7px;
  padding-left: 22px;
  margin: 15px 0 0;
}

.policy-content strong {
  color: #234c6e;
}

.policy-box {
  padding: 19px;
  margin-top: 16px;
  background: #f3f8fb;
  border-left: 3px solid var(--sky);
  border-radius: 0 13px 13px 0;
}

.policy-box.warning {
  color: #684d12;
  background: #fff8e8;
  border-left-color: var(--gold);
}

.policy-nav {
  position: sticky;
  top: 104px;
  align-self: start;
  padding: 19px;
  background: var(--mist);
  border-radius: 16px;
}

.policy-nav strong {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 14px;
}

.policy-nav a {
  display: block;
  padding: 5px 0;
  color: #536d82;
  font-size: 13px;
  text-decoration: none;
}

.policy-nav a:hover {
  color: var(--blue);
  text-decoration: underline;
}

@media (max-width: 900px) {
  .hero-grid,
  .install-card,
  .policy-layout {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 560px;
  }

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

  .privacy-callout-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .privacy-callout p:not(.eyebrow) {
    margin-left: 0;
  }

  .policy-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 32px, 1120px);
  }

  .header-inner {
    min-height: 70px;
  }

  .brand img {
    width: 43px;
    height: 45px;
  }

  nav {
    gap: 12px;
  }

  nav a {
    font-size: 12px;
  }

  nav a:first-child {
    display: none;
  }

  .hero {
    padding: 58px 0 52px;
  }

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

  .trust-grid,
  .feature-grid,
  .workflow-list {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    gap: 17px;
  }

  .section {
    padding: 72px 0;
  }

  .workflow {
    padding: 70px 0;
  }

  .workflow-list li {
    min-height: 0;
  }

  .workflow-list li::after {
    top: auto;
    right: auto;
    bottom: -18px;
    left: 50%;
    width: 2px;
    height: 18px;
  }

  .metric-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .page-hero {
    padding: 55px 0 44px;
  }

  .policy-layout {
    padding: 52px 0 72px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}