:root {
  --background: #f7f8fe;
  --surface: #ffffff;
  --surface-muted: #eef1fb;
  --text: #10172d;
  --muted: #63708e;
  --primary: #504dff;
  --primary-dark: #3835df;
  --cyan: #06a9d6;
  --success: #1fab7e;
  --danger: #ef6357;
  --orange: #f59a3c;
  --border: #e3e7f3;
  --shadow: 0 24px 70px rgba(29, 39, 89, 0.1);
  --radius: 25px;
  --container: 1160px;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--background);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 82% 8%, rgba(80, 77, 255, 0.09), transparent 26rem),
    radial-gradient(circle at 10% 23%, rgba(0, 182, 216, 0.07), transparent 24rem),
    var(--background);
  color: var(--text);
}

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

p {
  margin: 0;
  line-height: 1.72;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.045em;
  color: var(--text);
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(227, 231, 243, 0.72);
  background: rgba(247, 248, 254, 0.8);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1.1rem;
  font-weight: 720;
  letter-spacing: -0.035em;
}

.brand img {
  display: block;
  border-radius: 13px;
  box-shadow: 0 7px 18px rgba(70, 78, 196, 0.2);
}

.nav-links {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: 31px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 560;
}

.nav-links a:hover,
.footer-links a:hover {
  color: var(--primary);
}

.button {
  display: inline-flex;
  min-height: 53px;
  padding: 0 25px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font-size: 0.96rem;
  font-weight: 650;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
  box-shadow: 0 15px 31px rgba(80, 77, 255, 0.2);
}

.button:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
  box-shadow: 0 18px 36px rgba(80, 77, 255, 0.28);
}

.button-small {
  min-height: 44px;
  padding: 0 19px;
  border-radius: 14px;
  font-size: 0.9rem;
}

.button-secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: none;
}

.button-secondary:hover {
  background: #f0f3ff;
  box-shadow: none;
}

.button-light {
  background: white;
  color: var(--primary);
  box-shadow: 0 14px 34px rgba(12, 19, 45, 0.13);
}

.button-light:hover {
  background: #eef1ff;
  color: var(--primary-dark);
}

.hero {
  min-height: 674px;
  display: grid;
  grid-template-columns: 0.93fr 1fr;
  gap: 24px;
  align-items: center;
  padding: 54px 0 42px;
}

.eyebrow {
  margin-bottom: 18px;
  color: var(--primary);
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  font-weight: 750;
}

.hero h1 {
  max-width: 500px;
  font-size: clamp(2.9rem, 5.2vw, 4.5rem);
  line-height: 1.13;
}

.hero h1 span {
  background: linear-gradient(100deg, var(--primary), #008ed0);
  color: transparent;
  background-clip: text;
}

.lead {
  max-width: 490px;
  margin-top: 24px;
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 37px;
}

.trust-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 19px;
  margin-top: 41px;
  font-size: 0.78rem;
  color: var(--muted);
}

.trust-strip span {
  padding-right: 19px;
  border-right: 1px solid var(--border);
}

.trust-strip span:last-child {
  padding-right: 0;
  border-right: 0;
}

.trust-strip strong {
  display: block;
  color: var(--text);
  font-size: 0.88rem;
}

.hero-art {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.hero-art img {
  position: relative;
  width: min(100%, 560px);
  height: auto;
  filter: drop-shadow(0 35px 38px rgba(18, 25, 52, 0.12));
}

.glow {
  position: absolute;
  inset: 65px 48px 50px 92px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(80, 77, 255, 0.23), rgba(2, 176, 218, 0.06) 52%, transparent 70%);
  filter: blur(18px);
}

.section {
  padding: 82px 0;
}

.section-heading {
  max-width: 650px;
  margin-bottom: 43px;
}

.section-heading h2,
.demo-copy h2,
.privacy h2,
.cta h2 {
  font-size: clamp(2rem, 3.2vw, 2.7rem);
  line-height: 1.2;
}

.section-heading.center {
  margin: 0 auto 43px;
  text-align: center;
}

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

.feature {
  min-height: 245px;
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.feature-wide {
  grid-column: span 2;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 26px;
  border-radius: 15px;
  font-size: 1.35rem;
  font-weight: bold;
}

.feature-icon.blue {
  color: #147bdc;
  background: #e6f2ff;
}

.feature-icon.indigo {
  color: var(--primary);
  background: #eeedff;
}

.feature-icon.cyan {
  color: #038eaf;
  background: #e1f9ff;
}

.feature-icon.orange {
  color: #de790f;
  background: #fff0df;
}

.feature h3 {
  margin-bottom: 12px;
  font-size: 1.22rem;
}

.feature p {
  font-size: 0.92rem;
}

.demo-section {
  padding: 88px 0;
  background: #eef1fc;
}

.demo-layout {
  display: grid;
  grid-template-columns: 0.86fr 1fr;
  align-items: center;
  gap: 78px;
}

.demo-copy p:not(.eyebrow) {
  margin-top: 22px;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  font-weight: 580;
  color: var(--text);
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
}

.check-list li::before {
  content: "✓";
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #dff8ee;
  color: var(--success);
  font-weight: bold;
}

.demo-card {
  max-width: 540px;
  padding: 21px;
  border-radius: 29px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.demo-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 22px 22px 20px;
  border-radius: 20px;
  background: linear-gradient(120deg, #5652ff, #05a9da);
  color: white;
}

.demo-header p {
  margin-bottom: 6px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.84rem;
}

.demo-header strong {
  font-size: 1.34rem;
  letter-spacing: -0.03em;
}

.cloud-pill {
  border-radius: 30px;
  padding: 7px 10px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 0.73rem;
  font-weight: 700;
}

.task-form {
  display: grid;
  grid-template-columns: 1fr 88px 46px;
  gap: 8px;
  margin: 16px 0;
}

.task-form input,
.task-form select {
  width: 100%;
  min-height: 47px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: #f8f9fd;
  color: var(--text);
  padding: 0 12px;
  font: inherit;
}

.task-form input:focus,
.task-form select:focus {
  outline: 2px solid rgba(80, 77, 255, 0.35);
  border-color: var(--primary);
}

.task-form button {
  min-height: 47px;
  border: 0;
  border-radius: 13px;
  background: var(--primary);
  color: white;
  font-size: 1.55rem;
  cursor: pointer;
}

.task-list {
  display: grid;
  gap: 9px;
  min-height: 194px;
}

.demo-task {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 57px;
  padding: 10px 12px;
  border-radius: 15px;
  background: #f6f8fc;
}

.complete-button {
  flex: none;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: transparent;
  cursor: pointer;
}

.demo-task.priority-urgent .complete-button {
  border-color: var(--danger);
}

.demo-task.priority-high .complete-button {
  border-color: var(--orange);
}

.demo-task.completed .complete-button {
  border-color: var(--success);
  background: var(--success);
  position: relative;
}

.demo-task.completed .complete-button::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 6px;
  height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.task-label {
  flex: 1;
  min-width: 0;
}

.task-label strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.92rem;
}

.task-label span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.74rem;
}

.completed .task-label strong {
  color: var(--muted);
  text-decoration: line-through;
}

.task-badge {
  padding: 5px 7px;
  border-radius: 8px;
  color: var(--muted);
  background: #ecf0f8;
  font-size: 0.7rem;
  font-weight: 650;
}

.priority-urgent .task-badge {
  color: #cf473e;
  background: #ffebe9;
}

.priority-high .task-badge {
  color: #c36a0c;
  background: #fff0df;
}

.empty-demo {
  display: grid;
  place-items: center;
  min-height: 190px;
  color: var(--muted);
  text-align: center;
}

.demo-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 15px;
  padding: 10px 4px 2px;
  color: var(--muted);
  font-size: 0.82rem;
}

.text-button {
  border: 0;
  background: transparent;
  color: var(--primary);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.platform-section {
  padding: 94px 0 102px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.platform-grid article {
  padding: 35px 30px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.platform-label {
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: bold;
  letter-spacing: 0.14em;
}

.platform-grid h3 {
  margin: 18px 0 13px;
  font-size: 1.3rem;
}

.privacy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 45px;
  margin-bottom: 96px;
  padding: 46px 50px;
  border-radius: 30px;
  background: #e9f5fb;
}

.privacy div {
  max-width: 760px;
}

.privacy p:not(.eyebrow) {
  margin-top: 14px;
}

.cta {
  padding: 76px 0 83px;
  background: linear-gradient(115deg, #302dd1, #087eba);
  text-align: center;
}

.cta-content {
  display: grid;
  justify-items: center;
  gap: 17px;
}

.cta h2,
.cta p {
  color: white;
}

.cta p {
  max-width: 480px;
  opacity: 0.83;
}

.site-footer {
  background: #0e162b;
  color: #edf2ff;
}

.footer-layout {
  min-height: 105px;
  display: flex;
  align-items: center;
  gap: 35px;
}

.footer-brand {
  margin-right: auto;
}

.footer-links {
  display: flex;
  gap: 25px;
  color: #bdc7de;
  font-size: 0.9rem;
}

.footer-layout p {
  color: #7e8ba8;
  font-size: 0.83rem;
}

.document {
  max-width: 800px;
  min-height: calc(100vh - 183px);
  padding: 74px 0 94px;
}

.document h1 {
  font-size: clamp(2.35rem, 4vw, 3.2rem);
}

.document .updated {
  margin: 16px 0 55px;
  font-size: 0.9rem;
}

.document-lead {
  margin-top: 19px;
  margin-bottom: 53px;
  font-size: 1.06rem;
}

.document section {
  padding: 27px 0;
  border-bottom: 1px solid var(--border);
}

.document section h2 {
  margin-bottom: 14px;
  font-size: 1.35rem;
}

.document section a {
  color: var(--primary);
  font-weight: 600;
}

details {
  margin: 0 0 12px;
  padding: 18px 19px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
}

details summary {
  cursor: pointer;
  font-weight: 620;
}

details p {
  margin-top: 12px;
}

.contact-box {
  margin-top: 26px;
  padding: 31px !important;
  border: 0 !important;
  border-radius: var(--radius);
  background: #eef0ff;
}

.contact-box .button {
  margin-top: 22px;
  color: #fff;
}

.compact .footer-layout {
  justify-content: center;
  min-height: 72px;
}

.sr-only {
  position: absolute;
  overflow: hidden;
  width: 1px;
  height: 1px;
  clip-path: inset(50%);
}

@media (max-width: 940px) {
  .nav-links {
    display: none;
  }

  .nav {
    justify-content: space-between;
  }

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

  .hero {
    padding-top: 72px;
  }

  .hero-art {
    justify-content: center;
  }

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

  .demo-copy {
    max-width: 620px;
  }

  .demo-card {
    max-width: none;
  }
}

@media (max-width: 660px) {
  .container {
    width: min(var(--container), calc(100% - 32px));
  }

  .site-header .button-small {
    display: none;
  }

  .hero {
    min-height: 0;
    padding: 54px 0 24px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-art {
    margin-top: 24px;
  }

  .section,
  .demo-section,
  .platform-section {
    padding: 62px 0;
  }

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

  .feature-wide {
    grid-column: auto;
  }

  .demo-layout {
    gap: 39px;
  }

  .demo-card {
    padding: 14px;
  }

  .task-form {
    grid-template-columns: 1fr 72px 42px;
  }

  .privacy {
    flex-direction: column;
    align-items: flex-start;
    padding: 31px 25px;
    margin-bottom: 62px;
  }

  .footer-layout {
    flex-direction: column;
    justify-content: center;
    padding: 30px 0;
    gap: 17px;
  }

  .footer-brand {
    margin-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}