:root {
  --white: #fafaf8;
  --panel: #f3f1ec;
  --border: #e2ded5;
  --muted: #8a857c;
  --body: #3a3731;
  --strong: #16130e;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--white);
  color: var(--body);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
[hidden] { display: none !important; }

a { color: var(--strong); text-decoration: none; transition: opacity 0.15s; }
a:hover { opacity: 0.6; }

h1, h2, h3 {
  font-family: var(--font-serif);
  color: var(--strong);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 { font-size: 64px; line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: 36px; margin-bottom: 32px; }
h3 { font-size: 22px; margin-bottom: 10px; }

.lede { font-size: 17px; color: var(--muted); max-width: 540px; margin: 16px auto 0; }

.meta { font-size: 12px; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; margin-top: 24px; }
.meta.small { font-size: 11px; margin-top: 32px; }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(250, 250, 248, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--strong);
}
.brand-icon { width: 24px; height: 24px; }
.brand-type { height: 18px; width: auto; }
.nav nav { display: flex; gap: 28px; }
.nav nav a { font-size: 13px; color: var(--body); }

/* Hero */
.hero {
  padding: 120px 32px 60px;
  text-align: center;
}
.hero-inner { max-width: 720px; margin: 0 auto; }
.hero-logo { width: 128px; height: 128px; margin: 0 auto 32px; opacity: 0.9; }
.cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 36px;
  flex-wrap: wrap;
}
.btn {
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all 0.2s;
  display: inline-block;
}
.btn-primary {
  background: var(--strong);
  color: var(--white);
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--strong);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--strong); opacity: 1; }

/* Hero shot */
.hero-shot {
  max-width: 1100px;
  margin: 40px auto 120px;
  padding: 0 32px;
}
.hero-shot img {
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 40px 80px -40px rgba(22, 19, 14, 0.25);
}
.theme-toggle {
  display: inline-flex;
  margin: 24px auto 0;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  background: var(--white);
  gap: 2px;
}
.hero-shot { text-align: center; }
.hero-shot img { display: inline-block; }
.theme-btn {
  background: transparent;
  border: 0;
  padding: 8px 20px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  border-radius: 999px;
  transition: all 0.2s;
  letter-spacing: 0.02em;
}
.theme-btn:hover { color: var(--strong); }
.theme-btn.is-active {
  background: var(--strong);
  color: var(--white);
}

/* Story */
.story {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 32px 80px;
  text-align: center;
}
.story-inner h2 {
  font-size: 32px;
  margin-bottom: 28px;
}
.story-inner p {
  color: var(--body);
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 18px;
  text-align: left;
}
.story-inner p:last-child {
  margin-bottom: 0;
}

/* Privacy banner */
.privacy-banner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
}
.privacy-inner {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px 56px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.privacy-inner h2 {
  font-size: 28px;
  margin-bottom: 20px;
}
.privacy-inner p {
  color: var(--body);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 16px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.privacy-inner p:last-of-type {
  margin-bottom: 0;
}
.privacy-inner strong {
  color: var(--strong);
}
.privacy-inner code {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 12px;
  background: var(--white);
  padding: 1px 6px;
  border-radius: 4px;
}

/* YubiKey banner */
.yubikey-banner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 32px 0;
}
.yubikey-inner {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 48px 56px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
  position: relative;
}
.yubikey-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--strong);
  border: 1px solid var(--strong);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 20px;
}
.yubikey-inner h2 {
  font-size: 28px;
  margin: 0 0 20px;
}
.yubikey-inner p {
  color: var(--body);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 auto 16px;
  max-width: 600px;
  text-align: left;
}
.yubikey-inner p:last-of-type { margin-bottom: 0; }
.yubikey-inner strong { color: var(--strong); }

/* Hero badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--strong);
  border: 1px solid var(--strong);
  border-radius: 999px;
  padding: 8px 18px;
  opacity: 0.85;
  transition: opacity 0.15s;
}
.hero-badge:hover { opacity: 1; }

.new-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--strong);
  border: 1px solid var(--strong);
  border-radius: 999px;
  padding: 2px 8px;
  margin-left: 6px;
  vertical-align: middle;
}

/* Features */
.features {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px;
  text-align: center;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 48px;
  text-align: left;
}
.tile {
  background: var(--white);
  padding: 36px 32px;
}
.tile h3 { font-size: 20px; }
.tile p { color: var(--muted); margin: 0; font-size: 14px; line-height: 1.7; }
.tile code {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 12px;
  background: var(--panel);
  padding: 1px 6px;
  border-radius: 4px;
}

/* Screens */
.screens {
  max-width: 1100px;
  margin: 60px auto;
  padding: 60px 32px;
  text-align: center;
}
.screens-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 48px;
  text-align: left;
}
.screens-grid figure { margin: 0; }
.screens-grid img {
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px -30px rgba(22, 19, 14, 0.2);
}
.screens-grid figcaption {
  font-family: var(--font-serif);
  font-size: 16px;
  font-style: italic;
  color: var(--muted);
  margin-top: 14px;
  text-align: center;
}

.context-block {
  margin-top: 100px;
  padding-top: 80px;
  border-top: 1px solid var(--border);
  text-align: center;
}
.context-block h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--strong);
  margin-bottom: 20px;
}
.context-block > p {
  max-width: 620px;
  margin: 0 auto 56px;
  font-size: 16px;
  color: var(--body);
  line-height: 1.8;
}
.context-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  text-align: left;
}
.context-grid figure { margin: 0; }
.context-grid img {
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px -30px rgba(22, 19, 14, 0.2);
}
.context-grid figcaption {
  font-family: var(--font-serif);
  font-size: 15px;
  font-style: italic;
  color: var(--muted);
  margin-top: 12px;
  text-align: center;
}

/* Download */
.download {
  max-width: 900px;
  margin: 80px auto;
  padding: 80px 32px;
  text-align: center;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.downloads {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 48px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.dl {
  padding: 28px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--white);
  transition: all 0.2s;
  text-align: center;
}
.dl:hover {
  border-color: var(--strong);
  transform: translateY(-2px);
  opacity: 1;
}
.dl.highlight {
  border-color: var(--strong);
  background: var(--panel);
}
.dl-os {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--strong);
  margin-bottom: 6px;
}
.dl-desc { font-size: 12px; color: var(--muted); }

/* Install help ("first-time install" guide under the download buttons) */
.install-help {
  max-width: 560px;
  margin: 36px auto 0;
  text-align: left;
}
.install-help-title {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--strong);
  text-align: center;
  margin: 0 0 16px;
  font-weight: 500;
}
.install-help-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 20px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel, var(--white));
}
.install-help-grid h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--strong);
  margin: 0 0 10px;
}
.install-help-grid p {
  font-size: 13px;
  color: var(--body);
  margin: 0 0 10px;
  line-height: 1.5;
}
.install-help-grid em {
  font-style: italic;
  color: var(--muted);
}
.install-help-grid ol {
  font-size: 13px;
  color: var(--body);
  line-height: 1.6;
  padding-left: 20px;
  margin: 0;
}
.install-help-grid code {
  font-family: monospace;
  font-size: 12px;
  background: var(--white);
  padding: 1px 5px;
  border-radius: 3px;
  border: 1px solid var(--border);
}
.install-help-note {
  margin-top: 16px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  line-height: 1.6;
}

/* Donate */
.donate {
  max-width: 900px;
  margin: 0 auto 80px;
  padding: 80px 32px;
  text-align: center;
}
.donate-inner {
  max-width: 620px;
  margin: 0 auto;
}
.donate-inner h2 {
  margin-bottom: 24px;
}
.donate-inner p {
  color: var(--body);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 16px;
}
.donate-sign {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 28px !important;
}
.donate .btn {
  margin-top: 8px;
}

/* Footer */
footer {
  padding: 60px 32px 80px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}
.footer-inner .links { display: flex; gap: 28px; font-size: 13px; }
.whisper {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(22, 19, 14, 0.92);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: zoom-out;
  animation: lb-fade 0.18s ease-out;
}
.lightbox[hidden] { display: none; }
.lightbox-img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  cursor: default;
}
.lightbox-close {
  position: absolute;
  top: 24px;
  right: 28px;
  background: transparent;
  border: 0;
  color: var(--white);
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s;
  padding: 4px 12px;
}
.lightbox-close:hover { opacity: 1; }
@keyframes lb-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.zoomable { cursor: zoom-in; transition: opacity 0.15s; }
.zoomable:hover { opacity: 0.92; }

/* Mobile */
@media (max-width: 768px) {
  h1 { font-size: 44px; }
  h2 { font-size: 28px; }
  .hero { padding: 80px 24px 40px; }
  .hero-shot { margin: 20px auto 60px; padding: 0 16px; }
  .grid { grid-template-columns: 1fr; }
  .screens-grid { grid-template-columns: 1fr; gap: 32px; }
  .context-grid { grid-template-columns: 1fr; gap: 32px; }
  .context-block { margin-top: 60px; padding-top: 48px; }
  .context-block h3 { font-size: 26px; }
  .downloads { grid-template-columns: 1fr; }
  .install-help-grid { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
  .nav nav { gap: 16px; }
  .nav nav a:nth-child(1), .nav nav a:nth-child(2), .nav nav a:nth-child(4), .nav nav a:nth-child(5) { display: none; }
  .features, .screens, .download, .donate, .story { padding: 48px 20px; }
  .story-inner h2 { font-size: 26px; }
  .privacy-banner { padding: 0 16px; }
  .privacy-inner { padding: 32px 24px; }
  .yubikey-banner { padding: 32px 16px 0; }
  .yubikey-inner { padding: 32px 24px; }
}