* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* Content typography. Product-page header/footer retain their original styles. */
main {
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --type-body: 1rem;
  --type-lead: 1.0625rem;
  --type-card-title: 1.125rem;
  --type-small: .875rem;
  --type-meta: .75rem;
  --weight-medium: 500;
  --weight-semibold: 600;
  --text-body: light-dark(#514a42, #d2cabe);
  --text-secondary: light-dark(#655e55, #b5aea3);
  --text-meta: light-dark(#716b63, #a49e95);
  --status-success: light-dark(#526526, #aabc70);
  --status-failure: light-dark(#b13932, #f28d83);
  --status-failure-surface: light-dark(#f5e7e2, #3c2b28);
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: 1.65;
  color: var(--text-body);
}
main :is(h1, h2, h3, h4, dt) { color: var(--ink); }
main :is(h1, h2, h3) { font-family: var(--font-heading); font-weight: 400; }
main h2 { line-height: 1.2; letter-spacing: -.025em; }
main h3 { font-size: 1.375rem; line-height: 1.3; letter-spacing: -.015em; margin-bottom: 12px; }
main strong { font-weight: var(--weight-semibold); }
main :is(.step-content, .answer) strong { color: var(--ink); }
main a { text-decoration-thickness: 1px; }

body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.65; }
a { color: var(--accent-green); text-underline-offset: .25em; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .65; }
:focus-visible { outline: 3px solid var(--accent-green); outline-offset: 5px; }
[hidden] { display: none !important; }
.shell { max-width: 1164px; padding-inline: 32px; margin-inline: auto; }
.header { background: var(--paper); padding: 0 2rem; line-height: normal; }
.header-row { max-width: 1100px; margin: 0 auto; display: flex; gap: 2rem; align-items: flex-start; padding: 2rem 0 1.25rem; }
.header-brand-column { flex: 1; }
.header-app-store-badge-column { margin-left: auto; }
.header-app-store-badge-column img { height: 3.5rem; width: auto; }
.brand-lockup { display: inline-flex; align-items: center; gap: 1rem; text-decoration: none; }
.brand-lockup:hover { text-decoration: none; }
.brand-icon { width: 3.75rem; height: 3.75rem; border-radius: .95rem; box-shadow: 0 18px 35px var(--shadow); }
.brand-wordmark { display: flex; flex-direction: column; }
.brand-name { font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif; font-size: 2.2rem; font-weight: 400; color: var(--ink); line-height: 1; }
.brand-subtitle { font-size: 1rem; color: var(--muted-ink); }
p { margin: 0 0 1.2rem; }
h1, h2, h3 { font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif; font-weight: 500; margin: 0 0 1.2rem; }
h1 { font-size: clamp(3rem, 5.3vw, 4.5rem); line-height: 1.04; letter-spacing: -.045em; }
h2 { font-size: clamp(1.65rem, 2.6vw, 2.2rem); line-height: 1.12; letter-spacing: -.035em; }
h3 { font-size: 1.3rem; line-height: 1.2; }
.eyebrow { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; font-size: .875rem; line-height: 1.65; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; color: var(--accent-green); margin: 0 0 18px; }
.hero { background: radial-gradient(circle at top left, rgba(176, 112, 64, 0.12), transparent 34%), linear-gradient(180deg, var(--paper) 0%, var(--paper-hero) 100%); }
.hero-content { display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; gap: 50px; padding-block: 58px 80px; }
.hero-copy > p:not(.eyebrow):not(.small) { max-width: 530px; font-size: var(--type-lead); }
.actions { display: flex; flex-direction: column; gap: 22px; align-items: flex-start; margin-block: 28px 14px; }
.app-store-link { display: inline-block; line-height: 0; }
.app-store-link img { height: 3.5rem; width: auto; }
.small { font-size: var(--type-small, .875rem); line-height: 1.5; color: var(--text-secondary, var(--muted-ink)); margin: 0; }
/* Both pictures contribute their real height to the shared grid row.
   Padding reserves room for rotation and shadows outside those bounds. */
.reading-scene { display: grid; min-width: 0; width: 88%; margin-inline: auto; padding: 16px 12px 28px; isolation: isolate; }
.reading-device { position: relative; display: block; grid-area: 1 / 1; align-self: start; min-width: 0; isolation: isolate; }
.reading-device::before { content: ""; position: absolute; z-index: -1; inset: 4% 5%; border-radius: 11% / 5.5%; box-shadow: 0 14px 22px var(--shadow); }
.reading-device img { display: block; width: 100%; height: auto; }
.reading-device-phone { width: 53%; justify-self: end; transform: rotate(3deg); }
.reading-device-palma { width: 55%; justify-self: start; margin-top: 32px; transform: rotate(-2deg); z-index: 1; }
.explanation { background: var(--paper-deep); padding-block: 56px; }
.explanation-grid { display: grid; grid-template-columns: 1fr 1.35fr; column-gap: 70px; align-items: start; }
.explanation-grid > .eyebrow { grid-column: 1 / -1; }
.explanation p:last-child { margin-bottom: 0; }
.getting-started { padding-block: 76px; }
.section-heading { max-width: 720px; }
.sync-options { margin: 24px 0 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 44px; }
.sync-options article { border-top: 1px solid var(--line); padding-top: 20px; }
.sync-options h4 { display: flex; align-items: center; gap: .6rem; margin: 0 0 12px; font-family: var(--font-body); font-size: var(--type-body); font-weight: var(--weight-semibold); line-height: 1.4; }
.sync-options p { color: var(--text-body); }
.setup-steps { list-style: none; padding: 0; margin: 36px 0 0; }
.setup-steps > li { display: grid; grid-template-columns: 2.75rem minmax(0, 1fr); gap: 24px; padding-block: 32px; border-top: 1px solid var(--line); }
.setup-steps > li:last-child { padding-bottom: 0; }
.step-label { display: grid; place-items: center; width: 2.75rem; height: 2.75rem; border-radius: 50%; color: var(--accent-green); background: color-mix(in srgb, var(--accent-green) 18%, var(--paper)); font-weight: 600; line-height: 1; }
.step-content > p { max-width: 760px; }
.step-content > p:last-child, .sync-options p { margin-bottom: 0; }
button { background: var(--paper); color: var(--accent-green); border: 1px solid var(--line); padding: 8px 12px; border-radius: 7px; font-size: .875rem; font-weight: 600; }
.status-dot { display: inline-block; flex: 0 0 8px; width: 8px; height: 8px; border-radius: 50%; background: var(--muted-ink); }
.status-dot[data-state="ok"] { background: var(--accent-green); }
.status-dot[data-state="failed"] { background: var(--status-failure); }
.status-dot[data-state="failed"] + [role="status"] { color: var(--status-failure); }
.troubleshooting { padding-block: 56px 64px; border-top: 1px solid var(--line); }
.help-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(290px, 1fr); gap: 48px; margin-top: 32px; align-items: start; }
.help-questions details { border-top: 1px solid var(--line); padding-block: 20px; scroll-margin-top: 24px; }
.help-questions summary { position: relative; display: block; list-style: none; cursor: pointer; color: var(--ink); font-size: var(--type-body); font-weight: var(--weight-semibold); line-height: 1.5; padding: 0 8px 0 26px; }
.help-questions summary::-webkit-details-marker { display: none; }
.help-questions summary::before { content: ""; position: absolute; left: 2px; top: .5em; width: 0; height: 0; border-top: 4px solid transparent; border-bottom: 4px solid transparent; border-left: 6px solid var(--text-secondary); }
.help-questions details[open] > summary { color: var(--accent-green); }
.help-questions details[open] > summary::before { transform: rotate(90deg); border-left-color: var(--accent-green); }
.answer { margin: 18px 0 0 26px; }
.answer p:last-child { margin-bottom: 0; }
.answer ul { margin: 0; padding-left: 1.2rem; }
.answer li + li { margin-top: 12px; }
.answer li::marker { color: var(--accent-green); }
.matching-options { margin: 20px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.matching-options > div { padding: 20px; border-radius: 16px; background: var(--paper-deep); border: 1px solid var(--line); min-width: 0; }
.matching-options dt { font-size: var(--type-body); line-height: 1.4; font-weight: var(--weight-semibold); margin-bottom: 12px; }
.matching-options dd { margin: 0; }
.matching-example { background: var(--paper-deep); padding: 14px 16px; border-radius: 8px; }
.answer code { font-size: .9em; color: var(--ink); overflow-wrap: anywhere; }
.server-panel { padding: 24px; border-radius: 16px; background: var(--paper-deep); border: 1px solid var(--line); min-width: 0; }
.server-panel-heading { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.server-panel-heading h3 { display: flex; align-items: center; gap: 8px; margin: 0; font-family: var(--font-body); font-size: var(--type-card-title); font-weight: var(--weight-semibold); line-height: 1.4; letter-spacing: 0; }
.server-description { line-height: 1.5; }
.server-panel #check-status { display: inline-flex; align-items: center; justify-content: center; width: 2.5rem; height: 2.5rem; flex: none; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: color-mix(in srgb, var(--accent-green) 12%, var(--paper)); font-size: .875rem; font-weight: 600; line-height: 1.4; }
.server-panel #check-status:hover:not(:disabled) { background: color-mix(in srgb, var(--accent-green) 20%, var(--paper)); }
.refresh-icon { width: 1rem; height: 1rem; flex: none; background: currentColor; -webkit-mask: url("/site/images/arrow.clockwise.svg") center / contain no-repeat; mask: url("/site/images/arrow.clockwise.svg") center / contain no-repeat; }
.server-list { list-style: none; padding: 0; margin: 22px 0 0; }
.server-list li { padding-block: 20px; border-top: 1px solid var(--line); }
.server-list li:last-child { padding-bottom: 0; }
.server-name { display: flex; align-items: center; gap: 9px; margin-bottom: 4px; color: var(--ink); font-size: var(--type-body); line-height: 1.4; }
.server-name strong { font-weight: var(--weight-semibold); }
.server-address { display: block; font-family: var(--font-body); font-size: var(--type-small); line-height: 1.5; color: var(--text-secondary); overflow-wrap: anywhere; user-select: all; }
.server-check { display: flex; flex-direction: column; align-items: flex-start; gap: 7px; margin-top: 12px; }
.server-result { display: inline-flex; align-items: center; gap: 7px; padding: 4px 9px; border-radius: 6px; font-size: var(--type-small); line-height: 1.4; font-weight: var(--weight-medium); color: var(--text-secondary); background: var(--paper); }
.server-result:has([data-state="ok"]) { color: var(--status-success); background: color-mix(in srgb, var(--accent-green) 10%, var(--paper-deep)); }
.server-result:has([data-state="failed"]) { color: var(--status-failure); background: var(--status-failure-surface); }
.server-result .status-dot { width: 6px; height: 6px; flex-basis: 6px; }
.server-checked-at { font-size: var(--type-meta); line-height: 1.5; color: var(--text-meta); font-variant-numeric: tabular-nums; }
.reader-guides { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 28px; }
.reader-guides h3 { margin-bottom: 8px; }
.reader-guides p { margin: 0; }
.reader-guide-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 24px; }
.reader-guide-card { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--paper-deep); color: var(--text-body); text-decoration: none; }
.reader-guide-heading, .reader-guide-heading:hover { color: var(--ink); text-decoration: none; }
.reader-guide-heading { display: flex; align-items: center; gap: 12px; font-size: var(--type-card-title); line-height: 1.4; }
.reader-guide-heading strong { font-weight: var(--weight-semibold); }
.reader-guide-icon { display: inline-block; width: 2rem; height: 1.75rem; flex: 0 0 2rem; background: currentColor; -webkit-mask: var(--server-icon) center / auto 100% no-repeat; mask: var(--server-icon) center / auto 100% no-repeat; }
.reader-guide-description { color: var(--text-body); }
.reader-guide-action { color: var(--accent-green); font-size: var(--type-small); line-height: 1.5; font-weight: var(--weight-semibold); margin-top: auto; }
.support-section { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--line); }
.support-copy { max-width: 640px; }
.support-copy h3 { margin-bottom: 8px; }
.support-link { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; padding-block: 10px; color: var(--accent-green); font-size: var(--type-body); font-weight: var(--weight-semibold); text-decoration: none; }
.support-link:hover { text-decoration: underline; }
.skip-link { position: absolute; top: -100px; left: 16px; padding: 12px; background: var(--paper); z-index: 1; }
.skip-link:focus { top: 12px; }
@media (max-width: 800px) {
  .hero-content { gap: 30px; grid-template-columns: 1fr; padding-block: 32px 48px; }
  .hero-copy > p:not(.eyebrow):not(.small) { max-width: none; }
  .reading-scene { grid-row: 1; max-width: 340px; width: 90%; }
  .explanation-grid { grid-template-columns: 1fr; }
  .help-grid { grid-template-columns: 1fr; gap: 28px; }

  .sync-options { grid-template-columns: 1fr; gap: 20px; }
  .setup-steps > li { gap: 18px; }
  .getting-started { padding-block: 48px; }
}
@media (max-width: 480px) {
  .shell { padding-inline: 22px; }
  .server-panel { padding: 18px; }
  .matching-options, .reader-guide-cards { grid-template-columns: 1fr; }
  .setup-steps > li { grid-template-columns: 2.25rem minmax(0, 1fr); gap: 14px; }
  .step-label { width: 2.25rem; height: 2.25rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@media only screen and (max-width: 744px) {
  .header { padding: 0 1.25rem; text-align: center; }
  .header-row { flex-wrap: wrap; }
  .header-app-store-badge-column { display: none; }
  .brand-lockup { justify-content: flex-start; text-align: left; margin: 0 auto; }
  .brand-subtitle { font-size: .95rem; }
}

.server-icon { display: inline-block; flex: 0 0 1.5rem; width: 1.5rem; height: 1.5rem; background-color: currentColor; -webkit-mask: var(--server-icon) center / contain no-repeat; mask: var(--server-icon) center / contain no-repeat; }
.server-icon-koreader { --server-icon: url('/site/images/koreader-logo.svg'); }
.server-icon-leaf { --server-icon: url('/site/images/leaf-logo.svg'); }

.server-health-icon { display: inline-block; width: 1.25rem; height: 1.25rem; flex: none; background: currentColor; -webkit-mask: url("/site/images/waveform.path.ecg.svg") center / contain no-repeat; mask: url("/site/images/waveform.path.ecg.svg") center / contain no-repeat; }

.server-project-icon { display: inline-block; width: 1.5rem; height: 1.25rem; flex: 0 0 1.5rem; background: currentColor; -webkit-mask: var(--server-icon) center / auto 100% no-repeat; mask: var(--server-icon) center / auto 100% no-repeat; }
.server-icon-crosspoint { --server-icon: url('/site/images/crosspoint-logo.svg'); }

.server-project-link, .server-project-link:hover { color: var(--ink); text-decoration: none; }

.server-affiliation { margin-top: 20px; font-size: var(--type-meta); line-height: 1.6; color: var(--text-secondary); }