:root {
  color-scheme: dark;
  --ink-0: #000000;
  --ink-1: #0a0a0c;
  --ink-2: #11131a;
  --ink-3: #1b1d25;
  --ink-4: #282c37;
  --paper-92: rgb(255 255 255 / 0.92);
  --paper-72: rgb(255 255 255 / 0.72);
  --paper-64: rgb(255 255 255 / 0.64);
  --paper-56: rgb(255 255 255 / 0.56);
  --paper-40: rgb(255 255 255 / 0.40);
  --paper-24: rgb(255 255 255 / 0.24);
  --paper-12: rgb(255 255 255 / 0.12);
  --paper-08: rgb(255 255 255 / 0.08);
  --accent: #6b9fe4;
  --accent-2: #9bc2f2;
  --cyan: #22d3ee;
  --success: #3bd07e;
  --warning: #f5b342;
  --danger: #f0555b;
  --max: 1160px;
  --radius-card: 18px;
  --radius-panel: 28px;
  --shadow: 0 24px 90px rgb(0 0 0 / 0.38);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--ink-0);
}

body {
  min-height: 100%;
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% -14%, rgb(107 159 228 / 0.2), transparent 30rem),
    linear-gradient(180deg, #0e121b 0%, var(--ink-1) 42%, var(--ink-0) 100%);
  color: var(--paper-92);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  z-index: -2;
  background-image:
    radial-gradient(circle, rgb(255 255 255 / 0.32) 0 1px, transparent 1px),
    radial-gradient(circle, rgb(155 194 242 / 0.26) 0 1px, transparent 1px);
  background-position: 12px 20px, 48px 72px;
  background-size: 96px 96px, 132px 132px;
  mask-image: linear-gradient(180deg, black, transparent 72%);
  opacity: 0.16;
  animation: star-drift 42s linear infinite;
}

body::after {
  z-index: -1;
  background: radial-gradient(circle at 50% 0%, rgb(107 159 228 / 0.16), transparent 32rem);
  opacity: 0.72;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  color: #c6dcff;
}

.shell {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--paper-08);
  background: rgb(10 10 12 / 0.62);
  backdrop-filter: blur(22px) saturate(170%);
  -webkit-backdrop-filter: blur(22px) saturate(170%);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 66px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--paper-92);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 0 36px rgb(107 159 228 / 0.35);
}

.brand small {
  display: block;
  margin-top: -3px;
  color: var(--paper-40);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--paper-72);
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.nav-links a:hover,
.button:hover {
  transform: translateY(-1px);
  color: var(--paper-92);
  border-color: var(--paper-12);
  background: rgb(255 255 255 / 0.06);
}

.button.primary {
  color: #07111f;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  border-color: rgb(255 255 255 / 0.22);
  box-shadow: 0 14px 42px rgb(107 159 228 / 0.24);
}

.button.primary:hover {
  color: #07111f;
  background: linear-gradient(135deg, #c2dcff, #74a9f2);
}

.button:active,
.nav-links a:active {
  transform: translateY(1px) scale(0.99);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.82fr);
  gap: clamp(28px, 5vw, 74px);
  align-items: center;
  min-height: calc(100dvh - 66px);
  padding: clamp(44px, 7vw, 84px) 0 70px;
}

.hero-copy {
  animation: rise 600ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent-2);
  box-shadow: 0 0 24px var(--accent);
}

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

figure {
  margin: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(44px, 7.4vw, 92px);
  line-height: 0.96;
  letter-spacing: -0.048em;
}

.lead {
  max-width: 660px;
  margin-bottom: 30px;
  color: var(--paper-72);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.hero-actions.compact {
  margin-bottom: 0;
}

.home {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(28px, 6vw, 82px);
  align-items: center;
  min-height: calc(100dvh - 66px);
  padding: clamp(42px, 8vw, 92px) 0;
}

.home-copy {
  animation: rise 560ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

.home-icon {
  display: block;
  width: 72px;
  height: 72px;
  margin-bottom: 24px;
  border-radius: 20px;
  box-shadow: 0 18px 60px rgb(107 159 228 / 0.22);
}

.home h1 {
  margin-bottom: 16px;
  font-size: clamp(52px, 9vw, 110px);
}

.home .lead {
  max-width: 520px;
}

.home-preview {
  padding: 10px;
  border-radius: 34px;
  animation: rise 620ms cubic-bezier(0.16, 1, 0.3, 1) 80ms both;
}

.home-preview img {
  display: block;
  width: 100%;
  border-radius: 26px;
}

.simple-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin-bottom: 84px;
  border: 1px solid var(--paper-08);
  border-radius: 20px;
  background: var(--paper-08);
}

.simple-points div {
  padding: 22px;
  background: rgb(15 17 24 / 0.74);
}

.simple-points strong {
  display: block;
  margin-bottom: 6px;
  color: var(--paper-92);
  font-size: 17px;
}

.simple-points span {
  color: var(--paper-56);
  font-size: 14px;
}

.proof-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 620px;
}

.proof {
  padding: 14px;
  border: 1px solid var(--paper-08);
  border-radius: 16px;
  background: rgb(255 255 255 / 0.045);
}

.proof strong {
  display: block;
  color: var(--paper-92);
  font-size: 20px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.proof span {
  color: var(--paper-56);
  font-size: 12px;
}

.visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 620px;
  animation: rise 680ms cubic-bezier(0.16, 1, 0.3, 1) 120ms both;
}

.visual::before {
  content: "";
  position: absolute;
  width: min(74vw, 560px);
  aspect-ratio: 1;
  border-radius: 999px;
  background:
    radial-gradient(circle at 45% 38%, rgb(155 194 242 / 0.26), transparent 28%),
    radial-gradient(circle at 58% 62%, rgb(34 211 238 / 0.18), transparent 33%);
  filter: blur(18px);
  animation: aura-breathe 7s ease-in-out infinite;
}

.phone-stack {
  position: relative;
  width: min(100%, 430px);
  min-height: 560px;
}

.phone {
  position: absolute;
  width: 260px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 0.16);
  border-radius: 36px;
  background: #050509;
  box-shadow: 0 30px 90px rgb(0 0 0 / 0.56), inset 0 0 0 8px rgb(255 255 255 / 0.035);
}

.phone img {
  display: block;
  width: 100%;
  height: auto;
}

.phone.main {
  left: 50%;
  top: 30px;
  z-index: 3;
  transform: translateX(-50%);
  animation: float-main 6.6s ease-in-out infinite;
}

.phone.side {
  left: 0;
  top: 138px;
  z-index: 2;
  width: 210px;
  opacity: 0.72;
  transform: rotate(-8deg);
  animation: float-side 7.4s ease-in-out infinite;
}

.phone.side-right {
  right: 0;
  left: auto;
  top: 172px;
  transform: rotate(7deg);
  animation-delay: -1.5s;
}

.glass {
  position: relative;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 0.13);
  background:
    linear-gradient(135deg, rgb(255 255 255 / 0.12), rgb(255 255 255 / 0.035)),
    rgb(18 20 28 / 0.54);
  backdrop-filter: blur(26px) saturate(165%);
  -webkit-backdrop-filter: blur(26px) saturate(165%);
  box-shadow: var(--shadow), inset 0 1px 0 rgb(255 255 255 / 0.16);
}

.glass::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 0%, rgb(255 255 255 / 0.18), transparent 32%),
    linear-gradient(90deg, transparent, rgb(255 255 255 / 0.055), transparent);
}

.section {
  padding: 72px 0;
}

.section.tight {
  padding-top: 28px;
}

.section-head {
  max-width: 720px;
  margin-bottom: 28px;
}

.section-head h2,
.content-hero h1 {
  margin-bottom: 12px;
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.section-head p,
.content-hero p {
  color: var(--paper-64, var(--paper-72));
  font-size: 17px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.9fr;
  gap: 14px;
}

.feature-card {
  min-height: 230px;
  padding: 24px;
  border-radius: var(--radius-card);
  animation: reveal linear both;
  animation-timeline: view();
  animation-range: entry 0% cover 28%;
}

.feature-card.wide {
  grid-row: span 2;
  min-height: 474px;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.feature-card p {
  color: var(--paper-56);
}

.card-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  border-radius: 14px;
  color: #07111f;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  font-weight: 850;
  box-shadow: 0 18px 40px rgb(107 159 228 / 0.2);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--paper-08);
  border-radius: var(--radius-panel);
  background: var(--paper-08);
}

.metric {
  padding: 24px;
  background: rgb(15 17 24 / 0.74);
}

.metric strong {
  display: block;
  margin-bottom: 4px;
  color: var(--paper-92);
  font-size: clamp(26px, 4vw, 42px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.metric span {
  color: var(--paper-56);
  font-size: 13px;
}

.content-page {
  max-width: 920px;
  padding: 54px 0 80px;
}

.content-hero {
  margin-bottom: 24px;
  padding: 34px;
  border-radius: var(--radius-panel);
}

.updated {
  margin-bottom: 0;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 750;
}

.content-grid {
  display: grid;
  gap: 14px;
}

.content-card {
  padding: 26px;
  border-radius: var(--radius-card);
}

.content-card h2 {
  margin-bottom: 10px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.content-card p,
.content-card li {
  color: var(--paper-64, var(--paper-72));
}

.content-card p:last-child,
.content-card ul:last-child {
  margin-bottom: 0;
}

.callout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0;
}

.callout > div {
  padding: 18px;
  border: 1px solid var(--paper-08);
  border-radius: 16px;
  background: rgb(107 159 228 / 0.09);
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

.callout span {
  color: var(--paper-56);
  font-size: 13px;
}

.faq {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.footer {
  padding: 32px 0 44px;
  border-top: 1px solid var(--paper-08);
  color: var(--paper-40);
  font-size: 13px;
}

.footer .shell {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes aura-breathe {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.76;
  }
  50% {
    transform: scale(1.06);
    opacity: 1;
  }
}

@keyframes float-main {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-12px);
  }
}

@keyframes float-side {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -9px;
  }
}

@keyframes star-drift {
  to {
    background-position: 12px 116px, 48px 204px;
  }
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 12px 0;
    gap: 10px;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 44px;
  }

  .home {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .visual {
    min-height: 520px;
  }

  .phone-stack {
    min-height: 500px;
  }

  .phone {
    width: 230px;
  }

  .phone.side {
    width: 176px;
  }

  .proof-row,
  .simple-points,
  .feature-grid,
  .metric-strip,
  .callout,
  .faq {
    grid-template-columns: 1fr;
  }

  .feature-card.wide {
    min-height: 260px;
  }

  .footer .shell {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 24px, var(--max));
  }

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

  .button {
    width: 100%;
  }

  .visual {
    min-height: 440px;
  }

  .phone-stack {
    min-height: 430px;
  }

  .phone {
    width: 200px;
    border-radius: 30px;
  }

  .phone.side {
    width: 150px;
  }

  .content-hero,
  .content-card {
    padding: 22px;
  }
}

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

@media (prefers-reduced-transparency: reduce) {
  .glass,
  .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: #11131a;
  }
}