:root {
  color-scheme: dark;
  --ink: #f6f9ff;
  --muted: #96a6bc;
  --line: rgba(151, 175, 210, 0.16);
  --panel: rgba(13, 28, 49, 0.76);
  --panel-strong: #0d1b2d;
  --blue: #4f7cff;
  --cyan: #65d6ff;
  --green: #51e3b4;
  --bg: #07111f;
  --bg-deep: #040a13;
  --shell: 1180px;
  --radius: 24px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(45, 92, 220, 0.18), transparent 28rem),
    radial-gradient(circle at 18% 42%, rgba(50, 181, 230, 0.07), transparent 25rem),
    var(--bg);
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #07111f;
  background: #fff;
  border-radius: 8px;
  transform: translateY(-150%);
}

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

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

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.76);
  backdrop-filter: blur(18px);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 3px;
  padding: 8px 7px;
  background: linear-gradient(145deg, #5e8cff, #244dbd);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(32, 85, 220, 0.32);
}

.brand-mark i { display: block; border-radius: 3px; background: white; }
.brand-mark i:nth-child(1) { height: 9px; opacity: 0.72; }
.brand-mark i:nth-child(2) { height: 16px; }
.brand-mark i:nth-child(3) { height: 12px; opacity: 0.84; }

.nav-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 14px rgba(81, 227, 180, 0.8);
}

.hero {
  position: relative;
  min-height: 670px;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(50px, 8vw, 120px);
  padding-block: 92px;
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 12% -16% auto 48%;
  height: 420px;
  background: repeating-linear-gradient(90deg, transparent 0 77px, rgba(92, 135, 210, 0.06) 78px 79px), repeating-linear-gradient(0deg, transparent 0 77px, rgba(92, 135, 210, 0.06) 78px 79px);
  mask-image: radial-gradient(circle at center, black 10%, transparent 70%);
}

.eyebrow,
.kicker {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow { display: flex; gap: 9px; margin: 0 0 22px; }

.eyebrow span {
  padding: 7px 10px;
  border: 1px solid rgba(101, 214, 255, 0.18);
  border-radius: 999px;
  background: rgba(101, 214, 255, 0.06);
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(48px, 6.2vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h1 em {
  color: transparent;
  background: linear-gradient(95deg, #74a0ff, #67deff 70%);
  -webkit-background-clip: text;
  background-clip: text;
  font-style: normal;
}

.hero-lead {
  max-width: 610px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

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

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 13px;
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.button:hover { transform: translateY(-2px); }
.button:focus-visible, button:focus-visible { outline: 3px solid rgba(101, 214, 255, 0.5); outline-offset: 3px; }

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, #608cff, #345fd8);
  box-shadow: 0 14px 34px rgba(36, 82, 203, 0.34), inset 0 1px rgba(255, 255, 255, 0.18);
}

.button-primary:hover { box-shadow: 0 18px 38px rgba(36, 82, 203, 0.46), inset 0 1px rgba(255, 255, 255, 0.18); }

.button-quiet { color: #dbe7f9; border-color: var(--line); background: rgba(255, 255, 255, 0.035); }
.button-quiet:hover { border-color: rgba(125, 157, 211, 0.35); background: rgba(255, 255, 255, 0.06); }

.download-icon {
  width: 15px;
  height: 18px;
  display: inline-block;
  border-bottom: 2px solid currentColor;
  position: relative;
}

.download-icon::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0;
  width: 2px;
  height: 12px;
  background: currentColor;
}

.download-icon::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
}

.download-note { margin: 17px 0 0; color: #71839d; font-size: 12px; }

.release-card {
  position: relative;
  overflow: hidden;
  min-height: 450px;
  padding: 28px;
  border: 1px solid rgba(120, 157, 220, 0.22);
  border-radius: 30px;
  background: linear-gradient(155deg, rgba(23, 51, 87, 0.88), rgba(8, 19, 35, 0.93));
  box-shadow: 0 38px 90px rgba(0, 0, 0, 0.34), inset 0 1px rgba(255, 255, 255, 0.08);
}

.release-card::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  right: -115px;
  top: -120px;
  border-radius: 50%;
  background: rgba(53, 103, 255, 0.24);
  filter: blur(30px);
}

.window-lights { display: flex; gap: 7px; margin-bottom: 45px; }
.window-lights i { width: 8px; height: 8px; border-radius: 50%; background: #3f72f5; box-shadow: 0 0 12px currentColor; }
.window-lights i:nth-child(2) { background: #45d2e9; }
.window-lights i:nth-child(3) { background: #50d8aa; }

.release-card-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.release-card-head p { margin-bottom: 7px; color: var(--muted); font-size: 13px; }
.release-card-head h2 { margin: 0; font-size: 48px; letter-spacing: -0.05em; }
.release-badge { padding: 7px 10px; color: var(--green); border: 1px solid rgba(81, 227, 180, 0.2); border-radius: 999px; background: rgba(81, 227, 180, 0.08); font-size: 11px; font-weight: 800; text-transform: uppercase; }

.release-facts { margin: 32px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.release-facts div { padding-top: 16px; border-top: 1px solid var(--line); }
.release-facts dt { color: #72859f; font-size: 11px; }
.release-facts dd { margin: 6px 0 0; color: #e9f1fc; font-size: 13px; font-weight: 650; }

.mini-workspaces { display: grid; grid-template-columns: 1.18fr 1fr 0.82fr; gap: 9px; align-items: end; }
.mini-workspaces span { position: relative; height: 62px; border: 1px solid rgba(91, 135, 223, 0.2); border-radius: 10px; background: rgba(62, 98, 166, 0.11); }
.mini-workspaces span:nth-child(2) { height: 80px; }
.mini-workspaces b { position: absolute; top: 9px; left: 9px; width: 6px; height: 6px; border-radius: 50%; background: #4f7cff; box-shadow: 10px 0 #65d6ff; }

.trust-strip { border-block: 1px solid var(--line); background: rgba(4, 12, 22, 0.48); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-grid > div { min-height: 138px; display: flex; align-items: center; gap: 18px; padding: 28px clamp(16px, 3vw, 38px); border-right: 1px solid var(--line); }
.trust-grid > div:first-child { padding-left: 0; }
.trust-grid > div:last-child { border-right: 0; }
.trust-number { color: #355184; font-size: 12px; font-weight: 800; }
.trust-grid p { margin: 0; }
.trust-grid strong { display: block; margin-bottom: 7px; font-size: 14px; }
.trust-grid small { color: var(--muted); font-size: 12px; }

.section { padding-block: 120px; }
.section-heading { max-width: 650px; margin-bottom: 48px; }
.kicker { margin-bottom: 18px; }
.section-heading h2, .verification h2, .final-cta h2 { margin-bottom: 20px; font-size: clamp(38px, 5vw, 60px); line-height: 1.06; letter-spacing: -0.045em; }
.section-heading > p:last-child, .verification-copy > p:last-of-type { max-width: 600px; color: var(--muted); line-height: 1.8; }

.feature-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 16px; }
.feature-card { min-height: 350px; display: flex; flex-direction: column; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(155deg, rgba(15, 35, 60, 0.74), rgba(8, 19, 34, 0.76)); }
.feature-index { color: #4b668c; font-size: 11px; font-weight: 800; }
.feature-card h3 { margin: auto 0 11px; font-size: 21px; }
.feature-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; line-height: 1.75; }

.workspace-visual { height: 135px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 34px 10px 24px; padding: 15px; border: 1px solid rgba(90, 133, 213, 0.16); border-radius: 18px; background: rgba(3, 10, 19, 0.36); }
.workspace-visual i { position: relative; border: 1px solid rgba(98, 145, 235, 0.18); border-radius: 8px; background: linear-gradient(145deg, rgba(71, 113, 204, 0.17), rgba(26, 53, 93, 0.08)); }
.workspace-visual i::before { content: ""; position: absolute; top: 8px; left: 8px; width: 5px; height: 5px; border-radius: 50%; background: #4f7cff; box-shadow: 9px 0 #65d6ff; }

.feature-glyph { width: 110px; height: 110px; display: grid; place-items: center; margin: 54px auto 38px; color: #72dfff; border: 1px solid rgba(101, 214, 255, 0.16); border-radius: 50%; background: radial-gradient(circle, rgba(57, 124, 255, 0.19), transparent 70%); box-shadow: 0 0 50px rgba(41, 94, 216, 0.12); }
.feature-glyph-switch { position: relative; }
.feature-glyph-switch i { position: absolute; width: 44px; height: 22px; border-top: 2px solid currentColor; }
.feature-glyph-switch i::after { content: ""; position: absolute; right: 0; top: -5px; width: 8px; height: 8px; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); }
.feature-glyph-switch i:nth-child(2) { transform: rotate(180deg); }
.feature-glyph-text { font-size: 25px; font-weight: 700; }
.feature-glyph-text span { font-size: 16px; transform: translate(8px, 10px); }

.install-section { width: 100%; border-block: 1px solid var(--line); background: linear-gradient(150deg, rgba(12, 28, 48, 0.78), rgba(5, 13, 24, 0.88)); }
.install-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(50px, 9vw, 130px); }
.install-heading { margin: 0; }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 54px 1fr; gap: 18px; padding: 27px 0; border-top: 1px solid var(--line); }
.steps li:last-child { border-bottom: 1px solid var(--line); }
.steps li > span { color: var(--cyan); font-size: 12px; font-weight: 800; }
.steps h3 { margin-bottom: 8px; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.verification { display: grid; grid-template-columns: 0.9fr 1.1fr; align-items: center; gap: clamp(40px, 7vw, 95px); }
.verification h2 { font-size: clamp(35px, 4.5vw, 54px); }
.command { margin-top: 24px; overflow-x: auto; padding: 15px 17px; border: 1px solid var(--line); border-radius: 12px; background: #040b14; color: #bcd0eb; font-size: 12px; }
.command code { white-space: nowrap; }
.checksum-card { padding: 28px; border: 1px solid rgba(94, 138, 221, 0.22); border-radius: var(--radius); background: var(--panel); box-shadow: 0 24px 58px rgba(0, 0, 0, 0.2); }
.checksum-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: 0.12em; }
.checksum-head button { padding: 7px 11px; color: var(--cyan); border: 1px solid rgba(101, 214, 255, 0.18); border-radius: 8px; background: rgba(101, 214, 255, 0.06); cursor: pointer; }
.checksum-card > code { display: block; color: #e5efff; font-family: Consolas, ui-monospace, monospace; font-size: 14px; line-height: 1.75; overflow-wrap: anywhere; }
.checksum-card dl { margin: 25px 0 0; padding-top: 20px; border-top: 1px solid var(--line); }
.checksum-card dl div { display: grid; grid-template-columns: 55px 1fr; gap: 12px; margin-top: 10px; }
.checksum-card dt { color: #71839d; font-size: 11px; }
.checksum-card dd { margin: 0; color: #aebed3; font-size: 11px; overflow-wrap: anywhere; }
.copy-status { min-height: 18px; margin: 12px 0 0; color: var(--green); font-size: 12px; }

.notice { display: grid; grid-template-columns: 46px 1fr; gap: 20px; margin-bottom: 120px; padding: 28px; border: 1px solid rgba(255, 191, 93, 0.17); border-radius: 18px; background: rgba(255, 171, 55, 0.045); }
.notice-icon { width: 38px; height: 38px; display: grid; place-items: center; color: #ffcc7a; border: 1px solid rgba(255, 204, 122, 0.25); border-radius: 50%; font-family: Georgia, serif; font-weight: 700; }
.notice h2 { margin-bottom: 8px; font-size: 17px; }
.notice p { margin: 0; color: #a99984; font-size: 13px; line-height: 1.75; }

.final-cta { position: relative; overflow: hidden; margin-bottom: 90px; padding: 72px 28px; border: 1px solid rgba(98, 144, 231, 0.2); border-radius: 30px; background: linear-gradient(135deg, rgba(29, 66, 126, 0.55), rgba(9, 22, 40, 0.9)); text-align: center; }
.final-cta::after { content: ""; position: absolute; inset: auto 20% -150px; height: 260px; background: #2f67e3; border-radius: 50%; filter: blur(100px); opacity: 0.3; }
.final-cta > * { position: relative; z-index: 1; }
.final-cta h2 { margin-bottom: 12px; }
.final-cta > p:not(.kicker) { margin-bottom: 28px; color: var(--muted); }

footer { border-top: 1px solid var(--line); }
.footer-row { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #667990; font-size: 11px; }
.footer-row p { margin: 0; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-block: 70px; }
  .hero-copy { max-width: 700px; }
  .release-card { min-height: 390px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-large { grid-column: 1 / -1; }
  .install-layout, .verification { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .nav-row { min-height: 66px; }
  .brand { font-size: 12px; }
  .nav-meta { font-size: 11px; }
  .hero { min-height: auto; gap: 46px; padding-block: 58px 70px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .release-card { min-height: 0; padding: 22px; border-radius: 22px; }
  .release-card-head h2 { font-size: 42px; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid > div, .trust-grid > div:first-child { min-height: 104px; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-grid > div:last-child { border-bottom: 0; }
  .section { padding-block: 88px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-large { grid-column: auto; }
  .feature-card { min-height: 330px; }
  .verification { gap: 34px; }
  .checksum-card { padding: 22px; }
  .checksum-card dl div { grid-template-columns: 1fr; gap: 4px; }
  .notice { grid-template-columns: 1fr; margin-bottom: 88px; padding: 22px; }
  .final-cta { margin-bottom: 60px; padding-block: 58px; border-radius: 22px; }
  .footer-row { min-height: 110px; flex-direction: column; justify-content: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}