/* yank · marketing site
 * Design tokens are the single source in the extension repo's
 * docs/visual-design.md ("warm restrained dev-tool"). Keep in sync.
 * No inline styles anywhere — strict CSP (style-src 'self'). */

:root {
  /* surfaces */
  --bg: #fafaf7;
  --bg-app: #ffffff;
  --bg-soft: #f4f4ef;
  --bg-inset: #ededdf;
  --bg-code: #1a1d16;
  --bg-code-ln: #13160f;

  /* ink */
  --ink-1: #1a1a17;
  --ink-2: #4a4a44;
  --ink-3: #7a7a72;
  --ink-4: #b0b0a6;

  /* lines */
  --line: #e8e8df;
  --line-soft: #f0f0e7;

  /* brand · lime (the second run is free) */
  --brand: #b8e856;
  --brand-2: #9ed13c;
  --brand-3: #8ab828;
  --brand-ink: #2a3a0a;
  --brand-bg: #f0f7d9;
  --brand-bg-2: #e3f0b4;
  --brand-ring: rgba(184, 232, 86, 0.45);

  /* mode tri-color: A blue / B red / C green */
  --mode-a: #2563eb;
  --mode-a-bg: #e8f0fe;
  --mode-b: #dc2626;
  --mode-b-bg: #fdeaea;
  --mode-c: #16a34a;
  --mode-c-bg: #e7f6ec;

  /* code syntax */
  --code-fg: #e6e6da;
  --code-dim: #8a8f7e;
  --code-key: #b8e856;
  --code-str: #d7b56d;
  --code-fn: #82b6ff;

  --radius: 10px;
  --radius-sm: 7px;
  --maxw: 1080px;
  --shadow-pop: 0 8px 28px rgba(26, 26, 23, 0.12);
  --shadow-badge: 0 0 0 4px var(--brand-ring);

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo,
    Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink-1);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0;
}

p {
  margin: 0;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.mono {
  font-family: var(--mono);
}

/* ─── nav ─────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 247, 0.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  color: var(--ink-2);
  font-size: 14.5px;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--ink-1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
  background: var(--bg-app);
}

.lang-switch a {
  font-weight: 600;
}

.lang-switch a[aria-current="true"] {
  color: var(--ink-1);
}

.lang-switch .sep {
  color: var(--ink-4);
}

/* ─── buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--brand);
  color: var(--brand-ink);
  border-color: var(--brand-3);
  box-shadow: 0 1px 0 var(--brand-3);
}

.btn-primary:hover {
  background: var(--brand-2);
}

.btn-ghost {
  background: var(--bg-app);
  color: var(--ink-1);
  border-color: var(--line);
}

.btn-ghost:hover {
  background: var(--bg-soft);
}

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

.btn .chrome {
  width: 17px;
  height: 17px;
}

/* ─── hero ────────────────────────────────────────── */
.hero {
  padding: 76px 0 36px;
  text-align: center;
}

.zero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-ink);
  background: var(--brand-bg);
  border: 1px solid var(--brand-2);
  border-radius: 999px;
  padding: 6px 14px;
  box-shadow: var(--shadow-badge);
  margin-bottom: 26px;
}

.zero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-3);
}

.hero h1 {
  font-size: clamp(34px, 5.4vw, 58px);
  font-weight: 800;
  max-width: 16ch;
  margin: 0 auto;
}

.hero h1 .free {
  color: var(--brand-3);
}

.hero .sub {
  margin: 22px auto 0;
  max-width: 56ch;
  font-size: clamp(16px, 2vw, 19px);
  color: var(--ink-2);
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--ink-3);
}

/* ─── code window ─────────────────────────────────── */
.code-window {
  max-width: 720px;
  margin: 52px auto 0;
  background: var(--bg-code);
  border: 1px solid #2a2e23;
  border-radius: var(--radius);
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  text-align: left;
}

.code-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  background: var(--bg-code-ln);
  border-bottom: 1px solid #2a2e23;
}

.code-bar .tdot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #3a3f30;
}

.code-bar .fname {
  margin-left: 10px;
  color: var(--code-dim);
  font-family: var(--mono);
  font-size: 12.5px;
}

.code-bar .zero {
  margin-left: auto;
  color: var(--brand);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
}

.code-body {
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--code-fg);
  overflow-x: auto;
}

.code-body .c {
  color: var(--code-dim);
}
.code-body .k {
  color: var(--code-key);
}
.code-body .s {
  color: var(--code-str);
}
.code-body .f {
  color: var(--code-fn);
}

/* ─── sections ────────────────────────────────────── */
section {
  padding: 64px 0;
}

.section-head {
  text-align: center;
  max-width: 60ch;
  margin: 0 auto 44px;
}

.section-head .eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-3);
}

.section-head h2 {
  font-size: clamp(26px, 3.6vw, 38px);
  font-weight: 800;
  margin-top: 12px;
}

.section-head p {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 17px;
}

/* ─── mode cards (tri-color) ──────────────────────── */
.modes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.mode {
  background: var(--bg-app);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  border-top: 3px solid var(--mode);
}

.mode.a {
  --mode: var(--mode-a);
  --mode-bg: var(--mode-a-bg);
}
.mode.b {
  --mode: var(--mode-b);
  --mode-bg: var(--mode-b-bg);
}
.mode.c {
  --mode: var(--mode-c);
  --mode-bg: var(--mode-c-bg);
}

.mode-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--mode);
  background: var(--mode-bg);
  border-radius: 999px;
  padding: 4px 11px;
}

.mode h3 {
  font-size: 19px;
  margin-top: 16px;
}

.mode p {
  margin-top: 10px;
  color: var(--ink-2);
  font-size: 15px;
}

.mode .tag {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--ink-3);
  font-family: var(--mono);
}

/* ─── scenarios ───────────────────────────────────── */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: var(--bg-app);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.card .num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--brand-3);
}

.card h3 {
  font-size: 18px;
  margin-top: 10px;
}

.card p {
  margin-top: 10px;
  color: var(--ink-2);
  font-size: 15px;
}

/* ─── comparison table ────────────────────────────── */
.compare-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-app);
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 640px;
}

table.compare th,
table.compare td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}

table.compare thead th {
  font-size: 13px;
  color: var(--ink-3);
  font-weight: 600;
  background: var(--bg-soft);
}

table.compare thead th.us {
  color: var(--brand-ink);
  background: var(--brand-bg);
}

table.compare td.us {
  background: var(--brand-bg);
  font-weight: 600;
  color: var(--brand-ink);
}

table.compare tbody td:first-child {
  color: var(--ink-2);
  font-weight: 500;
}

table.compare tr:last-child td {
  border-bottom: none;
}

table.compare tr.grp td {
  background: var(--bg-inset);
  color: var(--ink-1);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ─── pricing ─────────────────────────────────────── */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  align-items: start;
}

.price {
  background: var(--bg-app);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
}

.price.featured {
  border-color: var(--brand-2);
  box-shadow: 0 0 0 1px var(--brand-2);
}

.price .plan {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.price.featured .plan {
  color: var(--brand-3);
}

.price .amount {
  margin-top: 14px;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.price .amount .per {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-3);
}

.price ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.price li {
  display: flex;
  gap: 9px;
  font-size: 14.5px;
  color: var(--ink-2);
  padding: 7px 0;
}

.price li .check {
  color: var(--brand-3);
  flex-shrink: 0;
  font-weight: 700;
}

.price .cta {
  margin-top: 22px;
  width: 100%;
  justify-content: center;
}

/* ─── faq ─────────────────────────────────────────── */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-app);
  padding: 4px 20px;
  margin-bottom: 12px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq summary::after {
  content: "+";
  color: var(--ink-3);
  font-size: 20px;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  padding: 0 0 16px;
  color: var(--ink-2);
  font-size: 15px;
}

/* ─── cta band ────────────────────────────────────── */
.cta-band {
  background: var(--bg-code);
  border-radius: 16px;
  padding: 52px 40px;
  text-align: center;
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
}

.cta-band p {
  color: var(--code-dim);
  margin-top: 14px;
  font-size: 17px;
}

.cta-band .hero-cta {
  margin-top: 28px;
}

/* ─── footer ──────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  padding: 44px 0 56px;
  margin-top: 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer .brand {
  font-size: 16px;
}

.footer-cols {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  margin: 0 0 12px;
}

.footer-col a {
  display: block;
  color: var(--ink-2);
  font-size: 14px;
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--ink-1);
}

.footer-legal {
  margin-top: 36px;
  font-size: 13px;
  color: var(--ink-3);
}

/* ─── responsive ──────────────────────────────────── */
@media (max-width: 860px) {
  .modes,
  .cards,
  .pricing {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
  }
}