:root {
  --bg: #ffffff;
  --soft: #f6f8fc;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e6ebf2;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff4ff;
  --header: 72px;
  --radius: 20px;
  --font: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow: 0 24px 80px rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 16px);
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 560px;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(ellipse 70% 60% at 80% 0%, rgba(37, 99, 235, 0.1), transparent 55%);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.08em 0.4em;
}

.container {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.slim {
  width: min(760px, calc(100% - 48px));
}

.header {
  position: sticky;
  top: 0;
  z-index: 30;
  height: var(--header);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: 1.05rem;
}

.logo img { border-radius: 8px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  margin: 6px auto;
  background: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn svg,
.btn img { width: 18px; height: 18px; flex: 0 0 auto; }

.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

.btn-primary {
  background: var(--blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

.btn-dark {
  background: #111827;
  color: #fff;
}

.btn-dark:hover {
  background: #030712;
  transform: translateY(-1px);
}

.btn-ghost {
  background: #fff;
  border-color: #e5e7eb;
  color: #111827;
}

.btn-ghost:hover { background: #f9fafb; }

.hero {
  position: relative;
  z-index: 1;
  padding: 56px 0 64px;
  text-align: left;
  background: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 0;
}

.hero-copy {
  min-width: 0;
}

.hero h1 {
  font-size: clamp(2.6rem, 4.8vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 700;
  margin-bottom: 22px;
  color: #111827;
}

h1 span {
  color: #2563eb;
}

.lede {
  font-size: 1.125rem;
  color: #6b7280;
  max-width: 36rem;
  margin: 0 0 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.stage { min-width: 0; }

.hero-shot {
  width: 100%;
  height: auto;
  aspect-ratio: 1128 / 790;
  object-fit: contain;
  display: block;
  border: 0;
  box-shadow: none;
}

.section { padding: 96px 0; }

.section-soft { background: var(--soft); }

#usecase {
  border-bottom: 1px solid var(--line);
}

.section-intro {
  text-align: left;
  max-width: 36rem;
  margin: 0 0 40px;
}

.section-intro h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.045em;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-intro p {
  color: var(--muted);
  font-size: 1.05rem;
}

.feat-sheet {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
}

.feat-sheet article {
  padding: 28px 32px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feat-sheet article:nth-child(2n) {
  border-right: 0;
}

.feat-sheet article:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.feat-sheet svg {
  width: 22px;
  height: 22px;
  color: var(--blue);
  margin-bottom: 14px;
}

.feat-sheet h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.feat-sheet p {
  color: var(--muted);
  font-size: 0.95rem;
}

.uses {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 48px;
}

.uses article {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.uses svg {
  width: 22px;
  height: 22px;
  color: var(--blue);
  margin-bottom: 14px;
}

.uses h3 {
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.uses p { color: var(--muted); }

kbd {
  display: inline-block;
  min-width: 1.7em;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 8px;
  background: #fff;
  font: 700 0.78rem var(--font);
  text-align: center;
}

.privacy-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 48px 52px;
}

.privacy-copy h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.045em;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 12px;
}

.privacy-copy p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34rem;
}

.privacy-copy a {
  display: inline-block;
  margin-top: 22px;
  color: var(--blue);
  font-weight: 600;
}

.privacy-copy a:hover { text-decoration: underline; }

.privacy-points {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.privacy-points li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.privacy-points svg {
  width: 22px;
  height: 22px;
  color: var(--blue);
}

.privacy-points strong {
  font-size: 0.95rem;
  font-weight: 600;
}

.faq-intro {
  text-align: center;
  max-width: none;
  margin: 0 0 32px;
}

#faq {
  padding-top: 56px;
}

.faq details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 4px 22px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 16px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.faq details[open] summary::after {
  transform: rotate(225deg);
  margin-top: 10px;
}

.faq p {
  color: var(--muted);
  padding-bottom: 16px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 28px;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr;
  gap: 32px 24px;
  align-items: start;
  margin-bottom: 32px;
}

.footer-brand {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
  width: max-content;
  max-width: 100%;
  justify-self: start;
}

.footer-grid .footer-brand { color: var(--text); }

.footer-brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  flex: 0 0 auto;
}

.footer-brand span {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--text);
}

.footer-grid > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding-left: 32px;
}

.footer-grid a {
  color: var(--muted);
  width: max-content;
}
.footer-grid a:hover { color: var(--text); }
.footer-grid .footer-brand:hover span { color: var(--blue); }

.footer-copy {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  font-size: 0.85rem;
}

.contact-form {
  margin: 28px 0 36px;
}

.contact-form .btn {
  margin-top: 4px;
}

.contact-done {
  margin: 28px 0 36px;
}

.contact-done h2 {
  font-size: 1.8rem;
  letter-spacing: -0.04em;
  margin: 0 0 8px;
}

.contact-done p {
  color: var(--muted);
}

.support-email {
  margin-top: 8px;
  color: var(--muted);
}

.support-email span {
  user-select: all;
}

.prose {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px 88px;
}

.prose h1 {
  font-size: 2.6rem;
  text-align: left;
  margin-bottom: 8px;
}

.prose .meta { color: var(--muted); margin-bottom: 28px; }

.prose h2 {
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  margin: 32px 0 10px;
}

.prose p,
.prose li { color: var(--muted); margin-bottom: 10px; }

.prose ul { padding-left: 18px; margin-bottom: 14px; }

.prose a { color: var(--blue); font-weight: 600; }

.uninstall {
  padding: 48px 0 88px;
}

.uninstall-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: start;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 48px 52px;
}

.uninstall-copy img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  margin-bottom: 18px;
}

.uninstall-copy h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.045em;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 12px;
}

.uninstall-copy p {
  color: var(--muted);
  font-size: 1.05rem;
}

.uninstall-label {
  font-weight: 600;
  margin-bottom: 12px;
}

.uninstall-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.uninstall-chips label {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
}

.uninstall-chips label:hover { border-color: #c5d0e0; }

.uninstall-chips label:has(input:checked) {
  border-color: var(--blue);
  background: var(--blue-soft);
  color: var(--blue-dark);
}

.uninstall-chips input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 16px;
  color: var(--text);
}

.field input[type="text"],
.field input[type="email"],
.field textarea {
  font: inherit;
  font-weight: 400;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
}

.field textarea { resize: vertical; min-height: 88px; }

.honey {
  position: absolute;
  left: -9999px;
  opacity: 0;
}

.uninstall-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 8px;
}

.uninstall-done h2 {
  font-size: 1.8rem;
  letter-spacing: -0.04em;
  margin-bottom: 8px;
}

.uninstall-done p { color: var(--muted); margin-bottom: 16px; }

.uninstall-done a {
  color: var(--blue);
  font-weight: 600;
}

.welcome-page {
  position: relative;
  z-index: 1;
  padding: 48px 0 96px;
}

.welcome-hero {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 56px;
}

.welcome-hero img,
.welcome-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin: 0 auto 22px;
}

.welcome-mark {
  display: grid;
  place-items: center;
  background: var(--blue);
  color: #fff;
}

.welcome-mark svg {
  width: 28px;
  height: 28px;
}

.welcome-hero h1 {
  font-size: clamp(2.6rem, 5vw, 3.8rem);
  letter-spacing: -0.045em;
  line-height: 1.08;
  font-weight: 800;
  margin-bottom: 16px;
}

.welcome-hero p {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.65;
}

.welcome-hero .welcome-tagline {
  margin-bottom: 14px;
}

.welcome-guide {
  list-style: none;
  max-width: 720px;
  margin: 0 auto 64px;
}

.welcome-guide li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.welcome-guide li:first-child { padding-top: 0; }
.welcome-guide li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.welcome-guide-num {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--blue);
  color: #fff;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.04em;
  display: grid;
  place-items: center;
}

.welcome-guide-body h2 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.welcome-guide-body p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.welcome-shortcuts {
  margin-bottom: 48px;
}

.welcome-shortcuts h2 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.welcome-keys {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.welcome-keys article {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px 24px;
  background: var(--soft);
}

.welcome-combo {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: #94a3b8;
  font-weight: 600;
}

.welcome-combo kbd {
  font-size: 0.95rem;
  padding: 0.35em 0.7em;
  background: #fff;
}

.welcome-keys article > p:last-child {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 500;
}

.welcome-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: #0f172a;
  color: #fff;
  border-radius: 20px;
  padding: 32px 36px;
}

.welcome-cta h2 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.welcome-cta p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
}

.welcome-cta .btn {
  flex: none;
  background: #fff;
  color: #0f172a;
  padding: 10px 16px;
  font-size: 0.875rem;
}

.welcome-cta .btn:hover {
  background: #2563eb;
  color: #fff;
  transform: translateY(-1px);
}

kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.82em;
  font-weight: 600;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 0.2em 0.5em;
}

[data-os-label="mac"] {
  display: none;
}

html[data-os="mac"] [data-os-label="win"] {
  display: none;
}

html[data-os="mac"] kbd[data-os-label="mac"] {
  display: inline-block;
}

html[data-os="mac"] :not(kbd)[data-os-label="mac"] {
  display: inline;
}

.form-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 900px) {
  .hero-inner,
  .feat-sheet,
  .uses,
  .privacy-card,
  .uninstall-card,
  .welcome-keys,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid > div {
    padding-left: 0;
  }

  .feat-sheet article {
    border-right: 0;
  }

  .feat-sheet article:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .feat-sheet article:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    inset: var(--header) 0 auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; }

  .hero { padding-top: 40px; }
  .privacy-card,
  .uninstall-card { padding: 28px 22px; }
  .welcome-page { padding-top: 24px; }
  .welcome-cta {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 22px;
  }
  .welcome-guide-num {
    width: 44px;
    height: 44px;
    font-size: 1.15rem;
    border-radius: 12px;
  }
  .welcome-guide li {
    grid-template-columns: 44px 1fr;
    gap: 16px;
  }
}