:root {
  --bg: #faf9f6;
  --bg-2: #f3f1ec;
  --ink: #0a0a0a;
  --ink-2: #1f1f1d;
  --muted: #6b6b66;
  --muted-2: #9a978f;
  --line: #e6e3dc;
  --line-2: #d9d5cc;
  --accent: oklch(0.72 0.12 65);
  --accent-ink: oklch(0.45 0.13 60);
  --shadow-sm: 0 1px 2px rgba(10,10,10,0.04);
  --shadow-md: 0 8px 30px rgba(10,10,10,0.06);
  --shadow-lg: 0 24px 60px rgba(10,10,10,0.10);
  --font: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, monospace;
  --maxw: 1180px;
}

* { box-sizing: border-box; -webkit-font-smoothing: antialiased; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); font-family: var(--font); }
body { font-size: 17px; line-height: 1.55; letter-spacing: -0.005em; text-rendering: optimizeLegibility; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .wrap { padding: 0 20px; } }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.display {
  font-family: var(--font);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.98;
  color: var(--ink);
}

.h1 { font-size: clamp(48px, 7.5vw, 96px); }
.h2 { font-size: clamp(34px, 4.4vw, 56px); letter-spacing: -0.03em; line-height: 1.02; font-weight: 500; }
.h3 { font-size: clamp(22px, 2.2vw, 28px); letter-spacing: -0.02em; line-height: 1.15; font-weight: 500; }

.sub {
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.5;
  color: var(--muted);
  max-width: 56ch;
  text-wrap: pretty;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, color 120ms ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.985); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: #2a2a28; }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-secondary:hover { background: rgba(10,10,10,0.04); }
.btn-ghost { background: transparent; color: var(--ink); padding: 0 14px; height: 40px; }
.btn-ghost:hover { background: rgba(10,10,10,0.05); }

.section { padding: clamp(80px, 11vw, 160px) 0; }
.section-tight { padding: clamp(60px, 8vw, 110px) 0; }

.divider { border-top: 1px solid var(--line); }

.tag-pill {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--bg-2);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250,249,246,0.78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  font-size: 14px; color: var(--ink-2); padding: 8px 12px; border-radius: 6px;
}
.nav-links a:hover { background: rgba(10,10,10,0.05); }
.nav-right { display: flex; align-items: center; gap: 6px; }
.lang-toggle {
  display: inline-flex;
  height: 28px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  overflow: hidden;
  font-size: 12px;
  font-family: var(--mono);
  letter-spacing: 0.05em;
}
.lang-toggle button {
  background: transparent; border: 0; padding: 0 10px; color: var(--muted); cursor: pointer;
}
.lang-toggle button.active { background: var(--ink); color: var(--bg); }

@media (max-width: 820px) {
  .nav-links { display: none; }
}

/* hero */
.hero { padding-top: clamp(48px, 7vw, 96px); padding-bottom: clamp(48px, 7vw, 96px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; gap: 48px; } }

.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 32px; }
.hero-meta { margin-top: 18px; font-size: 13px; color: var(--muted); font-family: var(--mono); letter-spacing: 0.02em; }

/* phone */
.phone-stage { display: flex; justify-content: center; }
.phone {
  width: 320px;
  height: 660px;
  background: #0a0a0a;
  border-radius: 48px;
  padding: 12px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.04) inset;
  position: relative;
}
.phone::before {
  content: ""; position: absolute; top: 18px; left: 50%; transform: translateX(-50%);
  width: 110px; height: 28px; border-radius: 18px; background: #0a0a0a; z-index: 3;
}
.phone-screen {
  width: 100%; height: 100%;
  background: #faf9f6;
  border-radius: 36px;
  overflow: hidden;
  position: relative;
  display: flex; flex-direction: column;
}
.phone-status {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 28px 0;
  font-size: 12px; font-weight: 600; color: #0a0a0a;
}
.phone-header {
  padding: 36px 24px 18px;
  display: flex; justify-content: space-between; align-items: flex-end;
}
.phone-header h4 { margin: 0; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); font-weight: 600; font-family: var(--mono); }
.phone-header h3 { margin: 6px 0 0; font-size: 22px; font-weight: 500; letter-spacing: -0.02em; color: var(--ink); }
.phone-header .day { font-size: 11px; font-family: var(--mono); color: var(--muted-2); }

.phone-list {
  flex: 1; padding: 6px 16px 16px; display: flex; flex-direction: column; gap: 4px;
  overflow: hidden;
}
.phone-item {
  display: grid; grid-template-columns: 56px 1fr auto; gap: 10px; align-items: center;
  padding: 12px 12px; border-radius: 14px;
  background: transparent;
  animation: slideIn 600ms cubic-bezier(0.22, 1, 0.36, 1) backwards;
}
.phone-item + .phone-item { border-top: 1px solid var(--line); border-radius: 0; }
.phone-item .t {
  font-family: var(--mono); font-size: 11px; color: var(--muted-2); letter-spacing: 0.02em;
}
.phone-item .h {
  font-size: 14px; font-weight: 500; color: var(--ink); letter-spacing: -0.01em;
}
.phone-item .s {
  font-size: 11.5px; color: var(--muted); margin-top: 2px;
}
.phone-item .dot {
  width: 6px; height: 6px; border-radius: 999px; background: var(--ink); opacity: 0.18;
}
.phone-item.now .dot { background: var(--accent); opacity: 1; box-shadow: 0 0 0 4px oklch(0.72 0.12 65 / 0.18); }

@keyframes slideIn {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

.phone-footer {
  padding: 10px 16px 18px;
  border-top: 1px solid var(--line);
  display: flex; justify-content: center;
}
.phone-input {
  width: 100%;
  height: 36px;
  background: var(--bg-2);
  border-radius: 12px;
  display: flex; align-items: center;
  padding: 0 14px;
  font-size: 12px; color: var(--muted);
  font-family: var(--mono);
}
.phone-input .caret {
  margin-left: 2px;
  width: 1px; height: 13px; background: var(--ink); animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* how it works */
.how-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 64px; }
@media (max-width: 820px) { .how-grid { grid-template-columns: 1fr; gap: 12px; } }
.how-card {
  padding: 32px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--bg);
  display: flex; flex-direction: column; gap: 16px;
  min-height: 240px;
}
.how-card .n { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.1em; }
.how-card h3 { margin: 0; }
.how-card p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.55; }

/* use cases */
.uses-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin-top: 64px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
@media (max-width: 820px) { .uses-grid { grid-template-columns: 1fr; } }
.use-card {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 40px 32px;
  display: flex; flex-direction: column; gap: 14px;
  min-height: 320px;
  background: var(--bg);
}
.use-card .imgph {
  flex: 1; min-height: 140px;
  background:
    repeating-linear-gradient(135deg, transparent 0 8px, rgba(10,10,10,0.05) 8px 9px),
    var(--bg-2);
  border-radius: 10px;
  display: flex; align-items: flex-end; padding: 12px;
  font-family: var(--mono); font-size: 10.5px; color: var(--muted); letter-spacing: 0.06em;
  text-transform: uppercase;
}
.use-card h3 { margin: 0; }
.use-card p { margin: 0; color: var(--muted); font-size: 15px; }

/* chat */
.chat-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; align-items: center; }
@media (max-width: 920px) { .chat-grid { grid-template-columns: 1fr; gap: 48px; } }

.messenger {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 460px;
  width: 100%;
}
.messenger-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.messenger-avatar {
  width: 36px; height: 36px; border-radius: 999px;
  background: var(--ink);
  display: flex; align-items: center; justify-content: center;
}
.messenger-avatar svg { width: 16px; height: 16px; }
.messenger-head .name { font-size: 14px; font-weight: 500; }
.messenger-head .status { font-size: 11.5px; color: var(--muted); font-family: var(--mono); }

.bubbles { padding: 22px 18px; display: flex; flex-direction: column; gap: 10px; min-height: 320px; background: var(--bg); }
.bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-line;
}
.bubble.ai { background: var(--bg-2); color: var(--ink); align-self: flex-start; border-bottom-left-radius: 6px; }
.bubble.you { background: var(--ink); color: var(--bg); align-self: flex-end; border-bottom-right-radius: 6px; }
.messenger-input {
  border-top: 1px solid var(--line);
  padding: 12px 16px;
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--muted);
}
.messenger-input .field {
  flex: 1; background: var(--bg-2); border-radius: 999px; height: 36px;
  display: flex; align-items: center; padding: 0 14px; font-family: var(--mono); font-size: 12px;
}

/* pricing */
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-top: 64px; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
@media (max-width: 820px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card {
  padding: 40px 36px;
  display: flex; flex-direction: column; gap: 22px;
  background: var(--bg);
  min-height: 420px;
}
.price-card.paid { background: var(--ink); color: var(--bg); }
.price-card.paid .tag-pill { background: rgba(255,255,255,0.08); color: var(--bg); }
.price-card.paid .num { color: var(--bg); }
.price-card.paid .unit { color: rgba(250,249,246,0.6); }
.price-card.paid .points li { color: rgba(250,249,246,0.78); }
.price-card.paid .points li::before { background: var(--bg); }
.price-card.paid .btn-primary { background: var(--bg); color: var(--ink); }
.price-card.paid .btn-primary:hover { background: #eeece5; }

.price-num { display: flex; align-items: baseline; gap: 10px; }
.price-num .num { font-size: 64px; letter-spacing: -0.04em; font-weight: 500; line-height: 1; }
.price-num .unit { font-size: 14px; color: var(--muted); }

.points { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.points li { position: relative; padding-left: 22px; font-size: 15px; color: var(--ink-2); }
.points li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 10px; height: 1px; background: var(--ink); opacity: 0.5;
}

/* download */
.dl-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
@media (max-width: 820px) { .dl-grid { grid-template-columns: 1fr; gap: 32px; } }
.dl-buttons { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.store-btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 12px 20px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--bg);
  border-radius: 14px;
  min-width: 200px;
}
.store-btn:hover { background: #2a2a28; }
.store-btn svg { width: 22px; height: 22px; flex-shrink: 0; }
.store-btn .small { font-size: 10.5px; opacity: 0.7; letter-spacing: 0.04em; }
.store-btn .big { font-size: 16px; font-weight: 500; margin-top: 1px; }

.dl-photo {
  aspect-ratio: 4 / 5;
  background:
    repeating-linear-gradient(135deg, transparent 0 10px, rgba(10,10,10,0.05) 10px 11px),
    var(--bg-2);
  border-radius: 18px;
  display: flex; align-items: flex-end; padding: 18px;
  font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* faq */
.faq-list { margin-top: 48px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; background: transparent; border: 0; padding: 24px 0;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  font-size: 18px; font-weight: 500; letter-spacing: -0.01em; color: var(--ink); text-align: left;
}
.faq-q .plus { width: 14px; height: 14px; position: relative; flex-shrink: 0; }
.faq-q .plus::before, .faq-q .plus::after {
  content: ""; position: absolute; background: var(--ink);
}
.faq-q .plus::before { left: 0; right: 0; top: 6.5px; height: 1px; }
.faq-q .plus::after { top: 0; bottom: 0; left: 6.5px; width: 1px; transition: transform 200ms ease; }
.faq-item.open .faq-q .plus::after { transform: scaleY(0); }
.faq-a {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 240ms ease;
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a > div { overflow: hidden; }
.faq-a p { margin: 0 0 24px; max-width: 64ch; color: var(--muted); font-size: 16px; line-height: 1.6; }

/* footer */
.footer { padding: 64px 0 40px; border-top: 1px solid var(--line); margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 820px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer h5 { font-size: 11px; font-family: var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; font-weight: 600; }
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { font-size: 14px; color: var(--ink-2); }
.footer ul a:hover { color: var(--ink); text-decoration: underline; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 40px; margin-top: 48px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); font-family: var(--mono); letter-spacing: 0.04em; }

/* section header layout */
.section-head { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: end; }
@media (max-width: 820px) { .section-head { grid-template-columns: 1fr; gap: 16px; } }
.section-head .kicker-col { display: flex; flex-direction: column; gap: 12px; }

/* logo wordmark */
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 500; letter-spacing: -0.025em; font-size: 18px; color: var(--ink);
}
.logo .mark {
  width: 14px; height: 14px; background: var(--ink); transform: rotate(45deg);
  border-radius: 2px;
}