:root {
  --text: #142033;
  --muted: #63758b;
  --line: rgba(20, 32, 51, 0.1);
  --blue: #1778ff;
  --cyan: #27d9ff;
  --gold: #f1bd52;
  --dark: #111a2a;
  --page-gutter: clamp(20px, 5vw, 92px);
  --hero-content-width: 980px;
  --wide-content-width: 1180px;
  --panel-content-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, Arial, "Microsoft YaHei", sans-serif;
  background: #f7fafd;
  overflow-x: hidden;
}

#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(90deg, rgba(9, 39, 100, 0.98), rgba(18, 142, 159, 0.86) 38%, rgba(61, 48, 143, 0.9) 67%, rgba(108, 87, 133, 0.9)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 36px, rgba(4, 15, 52, 0.18) 36px 72px);
}

.mouse-glow {
  pointer-events: none;
  position: fixed;
  left: 50%;
  top: 38%;
  z-index: -2;
  width: 520px;
  height: 520px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.22), rgba(39, 217, 255, 0.1) 34%, transparent 68%);
  filter: blur(8px);
  transition: transform 0.16s ease-out;
}

.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 20;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-gutter);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #111827;
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 34px);
}

.nav a {
  color: #111827;
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease;
}

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

.launcher-main {
  min-height: 100vh;
  background: #f7fafd;
}

.launcher-hero {
  min-height: 560px;
  display: grid;
  place-items: center;
  padding: 110px 24px 70px;
  color: #fff;
  text-align: center;
  background:
    radial-gradient(circle at 50% 24%, rgba(39, 217, 255, 0.3), transparent 34%),
    linear-gradient(135deg, #071a3b 0%, #0e5975 46%, #2f2b72 100%);
}

.launcher-hero-inner {
  width: min(900px, 100%);
}

.launcher-hero h1 {
  font-size: clamp(46px, 7vw, 82px);
}

.launcher-subtitle {
  width: min(720px, 100%);
  margin: 24px auto 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.8;
}

.launcher-download {
  width: min(390px, 100%);
  min-height: 82px;
  margin: 36px auto 0;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: #07111f;
  text-decoration: none;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.24);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.launcher-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 68px rgba(0, 0, 0, 0.3);
}

.launcher-download-icon {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 3px solid #0a1828;
  border-radius: 50%;
}

.launcher-download-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: #0a1828;
  stroke-width: 4.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.launcher-download strong,
.launcher-download small {
  display: block;
  text-align: left;
}

.launcher-download strong {
  font-size: 20px;
}

.launcher-download small {
  margin-top: 4px;
  color: #6b7c91;
  font-size: 13px;
}

.launcher-meta {
  margin-top: 30px;
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

.launcher-overview {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 96px 0;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(460px, 1.15fr);
  gap: clamp(46px, 7vw, 90px);
  align-items: center;
}

.launcher-copy > p:not(.eyebrow) {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}

.launcher-points {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 28px;
}

.launcher-points div {
  padding-top: 16px;
  border-top: 2px solid #dce9f6;
}

.launcher-points strong,
.launcher-points span {
  display: block;
}

.launcher-points strong {
  color: #142d55;
  font-size: 17px;
}

.launcher-points span {
  margin-top: 7px;
  color: var(--muted);
  line-height: 1.65;
}

.launcher-preview {
  margin: 0;
}

.launcher-preview img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(20, 32, 51, 0.12);
  border-radius: 8px;
  box-shadow: 0 28px 70px rgba(20, 40, 78, 0.16);
}

.launcher-preview figcaption {
  margin-top: 12px;
  color: #7b8ba0;
  font-size: 13px;
  text-align: center;
}

.launcher-steps {
  padding: 84px clamp(20px, 6vw, 92px) 104px;
  background: #fff;
}

.launcher-step-grid {
  width: min(1080px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: #dfe8f2;
  border: 1px solid #dfe8f2;
}

.launcher-step-grid article {
  min-height: 220px;
  padding: 34px;
  background: #fff;
}

.launcher-step-grid article > span {
  color: var(--blue);
  font-weight: 900;
}

.launcher-step-grid h3 {
  margin: 28px 0 12px;
  font-size: 22px;
}

.launcher-step-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 142px var(--page-gutter) 76px;
  color: #fff;
  text-align: center;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 64px 0 0;
  z-index: -1;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.055) 0 36px, rgba(11, 32, 89, 0.18) 36px 72px),
    linear-gradient(180deg, rgba(2, 9, 28, 0.14) 0%, rgba(24, 32, 62, 0.34) 58%, rgba(255, 227, 214, 0.3) 100%);
  mix-blend-mode: normal;
}

.hero-inner {
  width: min(var(--hero-content-width), 100%);
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--blue);
}

h1 {
  margin: 0;
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: clamp(68px, 10vw, 136px);
  line-height: 1.08;
  font-weight: 900;
  text-shadow: 0 0 34px rgba(255, 255, 255, 0.48), 0 12px 38px rgba(9, 23, 62, 0.36);
  letter-spacing: 0;
}

.subtitle {
  width: min(760px, 100%);
  margin: 34px auto 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2.1vw, 24px);
  line-height: 1.75;
}

.hero-actions {
  margin-top: 42px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.subscribe-row {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-width: min(480px, 88vw);
  justify-content: center;
  height: 88px;
  padding: 0 46px;
  border-radius: 999px;
  color: #030712;
  text-decoration: none;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  background: rgba(244, 252, 255, 0.9);
  box-shadow: 0 22px 48px rgba(20, 39, 91, 0.22);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 28px 62px rgba(20, 39, 91, 0.28);
}

.download-icon {
  width: 48px;
  height: 48px;
  border: 4px solid #04070c;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.download-icon svg {
  width: 31px;
  height: 31px;
  fill: none;
  stroke: #04070c;
  stroke-width: 5.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ghost-btn,
.subscribe-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  background: linear-gradient(135deg, #1677ff, #23c7ff);
  box-shadow: 0 16px 34px rgba(22, 119, 255, 0.3);
}

.version {
  margin: 26px 0 0;
  color: rgba(255, 255, 255, 0.92);
  font-size: 14px;
  font-weight: 300;
}

.support-strip {
  width: min(820px, 100%);
  margin-left: auto;
  margin-right: auto;
  margin-top: 68px;
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 15px;
  font-weight: 800;
}

.support-strip span {
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  color: #fff;
  background: rgba(11, 20, 42, 0.24);
  backdrop-filter: blur(12px);
}

.section {
  padding: 92px var(--page-gutter);
  background: #f7fafd;
}

.guide-page {
  background: #f7fafd;
}

.guide-page .site-header {
  position: sticky;
}

.guide-main {
  min-height: 100vh;
  padding-top: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(23, 120, 255, 0.12), transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(39, 217, 255, 0.1), transparent 34%),
    #f7fafd;
}

.guide-hero {
  padding: 82px clamp(20px, 6vw, 92px) 42px;
  text-align: center;
}

.guide-hero h1 {
  color: #142033;
  font-size: clamp(42px, 7vw, 82px);
  text-shadow: none;
}

.guide-hero p:not(.eyebrow) {
  width: min(760px, 100%);
  margin: 24px auto 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: 18px;
}

.guide-content {
  width: min(1020px, calc(100% - 40px));
  margin: 0 auto;
  padding: 0 0 72px;
  display: grid;
  gap: 18px;
}

.doc-card {
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid rgba(20, 32, 51, 0.08);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 58px rgba(24, 39, 75, 0.07);
}

.doc-card h2 {
  font-size: clamp(24px, 3vw, 34px);
  margin-bottom: 16px;
}

.doc-card p,
.doc-card li {
  color: var(--muted);
  line-height: 1.85;
}

.doc-card ul {
  margin: 0;
  padding-left: 22px;
}

.doc-btn {
  margin-top: 20px;
}

.launcher-guide-hero {
  padding-bottom: 54px;
}

.launcher-guide-hero h1 {
  font-size: clamp(42px, 6vw, 72px);
}

.launcher-primary-download {
  min-height: 60px;
  margin-top: 30px;
  padding: 0 30px;
  gap: 12px;
  border-radius: 8px;
  font-size: 18px;
}

.launcher-primary-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-size: 21px;
  line-height: 1;
}

.launcher-badges {
  margin-top: 24px;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.launcher-badges span {
  padding: 8px 13px;
  border: 1px solid rgba(23, 120, 255, 0.14);
  border-radius: 999px;
  color: #3e5877;
  background: rgba(255, 255, 255, 0.74);
  font-size: 13px;
}

.launcher-content {
  width: min(1240px, calc(100% - 48px));
}

.launcher-intro-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(34px, 5vw, 64px);
  align-items: center;
}

.launcher-feature-list {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.launcher-feature-list div {
  padding-top: 14px;
  border-top: 2px solid #e2ebf5;
}

.launcher-feature-list strong,
.launcher-feature-list span {
  display: block;
}

.launcher-feature-list strong {
  color: #142d55;
}

.launcher-feature-list span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.launcher-card-preview {
  margin: 0;
}

.launcher-card-preview img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(20, 32, 51, 0.12);
  border-radius: 8px;
  box-shadow: 0 24px 58px rgba(24, 39, 75, 0.14);
}

.launcher-card-preview figcaption {
  margin-top: 10px;
  color: #7b8ba0;
  font-size: 13px;
  text-align: center;
}

.launcher-guide-steps {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.launcher-guide-steps > div {
  min-height: 170px;
  padding: 24px;
  border: 1px solid #e2ebf5;
  border-radius: 8px;
  background: #f8fbff;
}

.launcher-guide-steps span,
.launcher-guide-steps strong {
  display: block;
}

.launcher-guide-steps span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.launcher-guide-steps strong {
  margin-top: 20px;
  color: #142d55;
  font-size: 18px;
}

.launcher-guide-steps p {
  margin: 10px 0 0;
  font-size: 14px;
}

.launcher-path-lead {
  max-width: 820px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.launcher-path-card code,
.launcher-version-card code {
  padding: 2px 7px;
  border-radius: 4px;
  color: #075fc6;
  background: #edf6ff;
  font-family: Consolas, "Microsoft YaHei", monospace;
  font-size: 0.94em;
  overflow-wrap: anywhere;
}

.launcher-path-grid {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  gap: 0;
}

.launcher-path-step {
  min-width: 0;
  margin: 0;
  padding-right: 28px;
}

.launcher-path-step + .launcher-path-step {
  padding-right: 0;
  padding-left: 28px;
  border-left: 1px solid #dfe8f2;
}

.launcher-path-media {
  height: 330px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid #dfe8f2;
  border-radius: 8px;
  background: #f4f8fc;
}

.launcher-path-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.launcher-path-step figcaption {
  margin-top: 18px;
}

.launcher-path-step figcaption span,
.launcher-path-step figcaption strong {
  display: block;
}

.launcher-path-step figcaption span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.launcher-path-step figcaption strong {
  margin-top: 8px;
  color: #142d55;
  font-size: 19px;
}

.launcher-path-step figcaption p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.launcher-path-note {
  margin-top: 26px;
  padding-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px 16px;
  flex-wrap: wrap;
  border-top: 1px solid #dfe8f2;
  color: var(--muted);
}

.launcher-path-note strong {
  color: #142d55;
}

.launcher-version-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: center;
  border-left: 4px solid #1778ff;
}

.launcher-version-card > div:first-child > p:last-child {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.launcher-version-action {
  min-width: 240px;
  text-align: center;
}

.launcher-version-download {
  min-width: 220px;
  border-radius: 8px;
}

.launcher-version-action > span {
  display: block;
  margin-top: 13px;
  color: #6b7c91;
  font-size: 13px;
}

.launcher-version-action strong {
  color: #142d55;
  font-size: 15px;
}

.launcher-notice-card {
  border-left: 4px solid var(--gold);
}

.section-head {
  width: min(840px, 100%);
  margin: 0 auto 34px;
  text-align: center;
}

.section-lead {
  margin: 16px auto 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

h2 {
  margin: 0;
  color: #16243a;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.2;
}

.feature-grid {
  width: min(var(--wide-content-width), 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.safety-section {
  background: #ffffff;
}

.safety-card {
  min-height: 232px;
}

.safety-card .card-icon {
  color: #0d6ce8;
  background: #e9f4ff;
}

.safety-note {
  width: min(var(--wide-content-width), 100%);
  margin: 18px auto 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding: 18px 22px;
  border-left: 3px solid #f1bd52;
  border-radius: 0 8px 8px 0;
  color: #53677f;
  background: #f4f8fd;
}

.safety-note strong {
  color: #142d55;
  font-weight: 900;
}

.safety-note span {
  line-height: 1.78;
}

.feature-card,
.guide-panel,
.subscribe-card,
.contact-card {
  border: 1px solid rgba(20, 32, 51, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 22px 70px rgba(24, 39, 75, 0.08);
  backdrop-filter: blur(16px);
}

.feature-card {
  min-height: 250px;
  padding: 26px;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: #eef6ff;
  color: var(--blue);
  font-weight: 900;
}

.feature-card h3 {
  margin: 28px 0 12px;
  font-size: 24px;
}

.feature-card p,
.guide-intro,
.subscribe-card p,
.contact-card p {
  color: var(--muted);
  line-height: 1.8;
  margin: 0;
}

.guide-section,
.subscribe-section,
.contact-section {
  padding-top: 48px;
}

.guide-panel,
.subscribe-card,
.contact-card {
  width: min(var(--panel-content-width), 100%);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 54px);
}

.guide-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px;
}

.guide-intro {
  margin-top: 18px;
}

.guide-list {
  display: grid;
  gap: 14px;
}

.guide-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.guide-item strong {
  color: #15223a;
}

.guide-item span {
  color: var(--muted);
  line-height: 1.7;
}

.subscribe-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.contact-card {
  text-align: center;
}

.qq-box {
  margin: 26px auto 0;
  width: fit-content;
  min-width: 260px;
  padding: 18px 28px;
  border-radius: 18px;
  background: #f0f6ff;
  color: var(--blue);
  font-size: 24px;
  font-weight: 900;
}

.footer {
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 28px 20px 40px;
  color: #72839a;
  background: #f7fafd;
}

@media (min-width: 1440px) {
  :root {
    --page-gutter: clamp(72px, 5.5vw, 112px);
    --hero-content-width: 1180px;
    --wide-content-width: 1360px;
    --panel-content-width: 1280px;
  }

  .hero {
    padding-top: 150px;
    padding-bottom: 88px;
  }

  .subtitle {
    width: min(860px, 100%);
    margin-top: 38px;
  }

  .hero-actions {
    margin-top: 48px;
  }

  .support-strip {
    width: min(920px, 100%);
    gap: 18px;
    justify-content: space-between;
  }

  .section {
    padding-top: 104px;
    padding-bottom: 104px;
  }

  .section-head {
    width: min(920px, 100%);
    margin-bottom: 42px;
  }

  .feature-grid {
    gap: 24px;
  }

  .feature-card {
    min-height: 268px;
    padding: 32px;
  }
}

@media (min-width: 1920px) {
  :root {
    --page-gutter: clamp(96px, 6vw, 144px);
    --hero-content-width: 1360px;
    --wide-content-width: 1560px;
    --panel-content-width: 1480px;
  }

  .site-header {
    height: 72px;
  }

  .hero::after {
    inset: 72px 0 0;
  }

  .hero {
    padding-top: 164px;
    padding-bottom: 104px;
  }

  .hero-inner {
    min-height: calc(100vh - 268px);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .subtitle {
    width: min(980px, 100%);
  }

  .download-btn {
    min-width: 520px;
  }

  .support-strip {
    width: min(1040px, 100%);
    margin-top: 78px;
    gap: 24px;
  }

  .support-strip span {
    flex: 1 1 0;
    min-width: 0;
  }

  .section {
    padding-top: 116px;
    padding-bottom: 116px;
  }

  .section-head {
    width: min(1020px, 100%);
    margin-bottom: 50px;
  }

  .feature-grid {
    gap: 28px;
  }

  .feature-card {
    min-height: 286px;
    padding: 36px;
  }

  .launcher-content {
    width: min(1480px, calc(100% - 192px));
  }

  .launcher-path-media {
    height: 390px;
  }
}

@media (min-width: 901px) and (max-width: 1439px) {
  .hero {
    padding-top: 118px;
    padding-bottom: 54px;
  }

  .hero h1 {
    font-size: 104px;
  }

  .subtitle {
    margin-top: 28px;
    font-size: 21px;
  }

  .hero-actions {
    margin-top: 34px;
  }

  .download-btn {
    height: 80px;
    font-size: 34px;
  }

  .version {
    margin-top: 20px;
  }

  .subscribe-row {
    margin-top: 16px;
  }

  .support-strip {
    margin-top: 42px;
  }
}

@media (min-width: 901px) and (max-width: 1180px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site-header {
    height: auto;
    min-height: 64px;
    align-items: flex-start;
    padding: 14px 20px;
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    gap: 20px;
    padding-bottom: 2px;
  }

  .hero {
    padding-top: 170px;
  }

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

  .subscribe-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .safety-note {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .launcher-overview {
    grid-template-columns: 1fr;
  }

  .launcher-step-grid {
    grid-template-columns: 1fr;
  }

  .launcher-page .site-header {
    width: 100%;
  }

  .launcher-page .nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px 12px;
    overflow: visible;
  }

  .launcher-page .nav a {
    min-width: 0;
    font-size: 13px;
    text-align: center;
  }

  .launcher-intro-card {
    grid-template-columns: 1fr;
  }

  .launcher-path-grid,
  .launcher-version-card {
    grid-template-columns: 1fr;
  }

  .launcher-path-step,
  .launcher-path-step + .launcher-path-step {
    padding: 0;
    border-left: 0;
  }

  .launcher-path-step + .launcher-path-step {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #dfe8f2;
  }

  .launcher-version-card {
    gap: 28px;
  }

  .launcher-version-action {
    min-width: 0;
    text-align: left;
  }

  .launcher-card-preview {
    max-width: 700px;
    margin: 0 auto;
  }
}

@media (max-width: 560px) {
  .hero {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-inner {
    width: 100%;
  }

  .hero h1 {
    font-size: 60px;
    white-space: nowrap;
  }

  .subtitle {
    margin-top: 24px;
    font-size: 18px;
  }

  .launcher-primary-download {
    width: 100%;
    padding: 0 18px;
    font-size: 16px;
  }

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

  .launcher-path-media {
    height: 260px;
  }

  .launcher-path-note {
    align-items: flex-start;
    flex-direction: column;
  }

  .launcher-version-download {
    width: 100%;
  }

  .launcher-guide-steps > div {
    min-height: 0;
  }
  .download-btn {
    width: 100%;
    min-width: 0;
    height: 72px;
    gap: 10px;
    padding: 0 14px;
    font-size: 24px;
  }

  .download-icon {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    font-size: 26px;
    border-width: 3px;
  }

  .download-btn > span:last-child {
    white-space: nowrap;
  }

  .version {
    font-size: 12px;
    line-height: 1.7;
  }

  .support-strip {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 48px;
  }

  .guide-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .launcher-hero {
    min-height: 520px;
    padding-top: 190px;
  }

  .launcher-hero h1 {
    max-width: 100%;
    font-size: clamp(36px, 11vw, 46px);
    overflow-wrap: anywhere;
  }

  .launcher-points {
    grid-template-columns: 1fr;
  }

  .launcher-download {
    width: calc(100% - 24px);
    padding-inline: 20px;
  }

  .launcher-meta {
    gap: 10px 18px;
  }
}

@media (max-width: 380px) {
  .hero h1 {
    font-size: 52px;
  }

  .download-btn {
    font-size: 22px;
  }
}