:root {
  color-scheme: light;
  --ink: #17242e;
  --ink-soft: #31424d;
  --muted: #60717b;
  --paper: #f5f7f4;
  --surface: #ffffff;
  --line: #d9e3df;
  --teal: #087f83;
  --teal-bright: #10a6a8;
  --teal-dark: #075f63;
  --teal-soft: #def3ef;
  --navy: #102f39;
  --navy-light: #194753;
  --warm: #f4ebe0;
  --warning: #7b4a16;
  --amber: #d47c24;
  --shadow-sm: 0 12px 34px rgba(31, 54, 62, 0.08);
  --shadow: 0 28px 80px rgba(31, 54, 62, 0.15);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 3%, rgba(86, 201, 193, 0.16), transparent 31rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", sans-serif;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
a { color: var(--teal-dark); text-underline-offset: 0.16em; }
a:hover { color: var(--teal); }
:focus-visible { outline: 3px solid #ef9f43; outline-offset: 3px; }
.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 20;
  padding: 0.6rem 1rem;
  border-radius: 0.6rem;
  background: var(--ink);
  color: white;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(217, 227, 223, 0.82);
  background: rgba(245, 247, 244, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.nav {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  min-height: 4.6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: var(--ink); text-decoration: none; font-weight: 760; }
.brand-mark {
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  border-radius: 0.75rem;
  color: white;
  background: linear-gradient(145deg, #0d9ca0, #08666c);
  box-shadow: 0 8px 20px rgba(8, 127, 131, 0.25);
}
.nav-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1.15rem; font-size: 0.9rem; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav-links a:hover { color: var(--teal-dark); }
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 750; }

main { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
.eyebrow { margin: 0 0 0.8rem; color: var(--teal-dark); font-size: 0.78rem; font-weight: 780; letter-spacing: 0.14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.28; letter-spacing: -0.025em; }
h1 { margin: 0; font-size: clamp(2.7rem, 6.5vw, 5.7rem); }
h1 span { color: var(--teal-dark); }
h2 { margin: 0 0 1rem; font-size: clamp(1.85rem, 4vw, 3rem); }
h3 { margin: 0 0 0.55rem; font-size: 1.12rem; }
.lead { max-width: 42rem; margin: 1.35rem 0 0; color: var(--ink-soft); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.muted { color: var(--muted); }
.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-head { max-width: 44rem; margin-bottom: 2rem; }
.section-head.wide { max-width: 56rem; }

.hero { padding: clamp(4.5rem, 9vw, 8rem) 0 clamp(3.5rem, 7vw, 6rem); display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(22rem, 0.92fr); gap: clamp(2rem, 6vw, 5rem); align-items: center; }
.hero-copy { min-width: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3.15rem; padding: 0.75rem 1.35rem; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font-weight: 750; transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--teal-dark); color: white; box-shadow: 0 12px 28px rgba(7, 95, 99, 0.2); }
.button.primary:hover { background: var(--teal); color: white; }
.button.secondary { border-color: var(--line); background: rgba(255, 255, 255, 0.72); color: var(--ink); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0.65rem 1.25rem; margin: 1.6rem 0 0; padding: 0; list-style: none; color: var(--ink-soft); font-size: 0.88rem; font-weight: 650; }
.hero-facts li::before { content: "✓"; margin-right: 0.4rem; color: var(--teal); font-weight: 800; }
.hero-footnote { max-width: 38rem; margin: 1rem 0 0; color: var(--muted); font-size: 0.78rem; }

.product-preview { position: relative; padding: 1.15rem; border: 1px solid rgba(206, 221, 216, 0.92); border-radius: 1.8rem; background: rgba(255, 255, 255, 0.92); box-shadow: var(--shadow); transform: rotate(1deg); }
.product-preview::before { content: ""; position: absolute; z-index: -1; inset: 10% -6% -6% 10%; border-radius: 2rem; background: linear-gradient(145deg, rgba(21, 165, 164, 0.21), rgba(7, 95, 99, 0.05)); transform: rotate(-3deg); }
.preview-topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.25rem 0.25rem 0.9rem; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
.preview-topbar > div { display: flex; align-items: center; gap: 0.5rem; }
.status-dot { width: 0.65rem; height: 0.65rem; display: inline-block; border-radius: 999px; background: #ee4f55; box-shadow: 0 0 0 4px rgba(238, 79, 85, 0.11); }
.privacy-badge { padding: 0.32rem 0.65rem; border-radius: 999px; background: var(--teal-soft); color: var(--teal-dark); font-size: 0.72rem; font-weight: 750; }
.preview-transcript { padding: 1rem 0.25rem; }
.preview-label { margin: 0 0 0.55rem; color: var(--muted); font-size: 0.72rem; font-weight: 750; letter-spacing: 0.09em; text-transform: uppercase; }
.utterance { display: grid; grid-template-columns: 3.1rem 1fr; gap: 0.65rem; align-items: start; padding: 0.58rem 0; font-size: 0.86rem; }
.speaker { font-size: 0.72rem; font-weight: 800; }
.speaker.patient { color: #6259c8; }
.speaker.doctor { color: var(--teal); }
.preview-draft { padding: 0.9rem; border-radius: 1rem; background: #eff7f5; }
.preview-draft-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.preview-draft-title span { padding: 0.22rem 0.55rem; border-radius: 999px; background: var(--warm); color: var(--warning); font-size: 0.68rem; font-weight: 800; }
.soap-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem; }
.soap-grid > div { min-height: 5rem; padding: 0.7rem; border: 1px solid rgba(8, 127, 131, 0.11); border-radius: 0.75rem; background: white; }
.soap-grid b { color: var(--teal); }
.soap-grid p { margin: 0.3rem 0 0; color: var(--ink-soft); font-size: 0.75rem; line-height: 1.55; }
.preview-caption { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.65rem; text-align: center; }

.trust-strip { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 1.2rem; background: rgba(255, 255, 255, 0.7); box-shadow: var(--shadow-sm); }
.trust-strip > div { padding: 1rem 1.25rem; }
.trust-strip > div + div { border-left: 1px solid var(--line); }
.trust-strip strong, .trust-strip span { display: block; }
.trust-strip strong { font-size: 0.92rem; }
.trust-strip span { color: var(--muted); font-size: 0.76rem; }

.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.pain-card { padding: 1.5rem; border-top: 3px solid var(--teal); border-radius: 0 0 1.2rem 1.2rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.card-number { display: block; margin-bottom: 1.6rem; color: var(--teal); font-size: 0.75rem; font-weight: 800; letter-spacing: 0.12em; }
.pain-card p { margin: 0; color: var(--muted); font-size: 0.93rem; }

.audience-section { border-top: 1px solid var(--line); }
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.audience-card { position: relative; overflow: hidden; padding: clamp(1.5rem, 4vw, 2.3rem); border: 1px solid var(--line); border-radius: 1.5rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.audience-card::after { content: ""; position: absolute; width: 12rem; height: 12rem; right: -5rem; top: -6rem; border-radius: 50%; background: var(--teal-soft); opacity: 0.7; }
.audience-card.locum::after { background: var(--warm); }
.audience-tag { margin: 0 0 1rem; color: var(--teal-dark); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.08em; }
.audience-card h3 { max-width: 28rem; font-size: clamp(1.35rem, 3vw, 2rem); }
.audience-card > p:not(.audience-tag, .policy-note) { color: var(--muted); }
.check-list { margin: 1.4rem 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding: 0.38rem 0 0.38rem 1.6rem; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 800; }
.policy-note { margin: 1.2rem 0 0; padding: 0.85rem 1rem; border-radius: 0.8rem; background: var(--warm); color: var(--warning); font-size: 0.78rem; }

.workflow-section { border-top: 1px solid var(--line); }
.workflow-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.workflow-list li { display: grid; grid-template-columns: 4rem 1fr; gap: 1.5rem; align-items: start; padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.workflow-number { width: 3rem; height: 3rem; display: grid; place-items: center; border-radius: 999px; background: var(--teal-dark); color: white; font-weight: 800; }
.workflow-list h3 { margin-bottom: 0.25rem; font-size: 1.3rem; }
.workflow-list p { max-width: 52rem; margin: 0; color: var(--muted); }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.85rem; }
.feature-card { padding: 1.3rem; border: 1px solid var(--line); border-radius: 1.15rem; background: rgba(255,255,255,0.82); }
.feature-icon { width: 2.5rem; height: 2.5rem; display: grid; place-items: center; margin-bottom: 1.1rem; border-radius: 0.8rem; background: var(--teal-soft); color: var(--teal-dark); font-weight: 850; }
.feature-card p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.privacy-panel { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); padding: clamp(2rem, 5vw, 4rem); border-radius: 2rem; background: linear-gradient(145deg, var(--navy), var(--navy-light)); color: white; box-shadow: var(--shadow); }
.eyebrow.light { color: #83ded8; }
.privacy-intro > p:not(.eyebrow) { color: rgba(255,255,255,0.74); }
.light-link { color: #8ce2dd; }
.light-link:hover { color: white; }
.privacy-links { display: flex; flex-wrap: wrap; gap: 0.7rem 1.35rem; margin-top: 1.25rem; }
.privacy-points { display: grid; gap: 0.8rem; }
.privacy-points article { display: grid; grid-template-columns: 2.4rem 1fr; gap: 1rem; padding: 1rem; border: 1px solid rgba(255,255,255,0.12); border-radius: 1rem; background: rgba(255,255,255,0.06); }
.privacy-points strong { color: #79d7d1; font-size: 0.72rem; }
.privacy-points h3 { margin: 0; }
.privacy-points p { margin: 0.15rem 0 0; color: rgba(255,255,255,0.68); font-size: 0.86rem; }

.security-overview { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: clamp(2rem, 6vw, 5rem); padding: clamp(2rem, 5vw, 4rem); border-radius: 2rem; background: linear-gradient(145deg, var(--navy), var(--navy-light)); color: white; box-shadow: var(--shadow); }
.security-overview h2 { max-width: 18rem; }
.security-overview > div > p:not(.eyebrow) { max-width: 32rem; margin-bottom: 0; color: rgba(255,255,255,0.74); }
.security-principles { display: grid; gap: 0.8rem; }
.security-principle { display: grid; grid-template-columns: 2.4rem 1fr; gap: 1rem; padding: 1rem; border: 1px solid rgba(255,255,255,0.12); border-radius: 1rem; background: rgba(255,255,255,0.06); }
.security-principle strong { color: #79d7d1; font-size: 0.72rem; }
.security-principle h3 { margin: 0; color: white; }
.security-principle p { margin: 0.15rem 0 0; color: rgba(255,255,255,0.68); font-size: 0.86rem; }
.security-prose { padding-top: clamp(3rem, 6vw, 5rem); }
.security-flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.85rem; margin: 1.5rem 0 2.3rem; }
.security-flow article { padding: 1.25rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(255,255,255,0.72); }
.security-flow strong { display: block; margin-bottom: 0.8rem; color: var(--teal); font-size: 0.72rem; letter-spacing: 0.1em; }
.security-flow h3 { margin-bottom: 0.3rem; }
.security-flow p { margin: 0; color: var(--muted); font-size: 0.88rem; }
.security-boundary { margin: 1.5rem 0 2.2rem; padding: 1.25rem 1.4rem; border: 1px solid var(--line); border-left: 3px solid var(--teal); border-radius: 0.3rem 1rem 1rem 0.3rem; background: rgba(222, 243, 239, 0.45); }
.security-boundary h3 { margin-bottom: 0.25rem; }
.security-boundary p { margin: 0; color: var(--ink-soft); }

.usecase-grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 1rem; }
.use-cases-page .page-head h1 { font-size: clamp(2.8rem, 5.5vw, 4.4rem); }
.usecase-card { padding: clamp(1.6rem, 4vw, 2.4rem); border: 1px solid var(--line); border-radius: 1.5rem; background: rgba(255,255,255,0.82); box-shadow: var(--shadow-sm); }
.usecase-card.online { border-color: rgba(8,127,131,0.3); background: linear-gradient(145deg, #e5f6f2, #fff); }
.usecase-tag { display: inline-flex; margin: 0 0 1rem; padding: 0.28rem 0.65rem; border-radius: 999px; background: var(--teal-soft); color: var(--teal-dark); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.05em; }
.usecase-card h3 { max-width: 28rem; font-size: clamp(1.35rem, 3vw, 2rem); }
.usecase-card > p { color: var(--muted); }
.usecase-list { margin: 1.4rem 0 0; padding: 0; list-style: none; }
.usecase-list li { position: relative; padding: 0.38rem 0 0.38rem 1.6rem; }
.usecase-list li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 800; }
.usecase-note { margin: 1rem 0 0; padding: 0.9rem 1rem; border-left: 2px solid var(--line); color: var(--muted); font-size: 0.8rem; }
.usage-safety { margin-top: clamp(3rem, 7vw, 5rem); padding: clamp(1.6rem, 4vw, 2.5rem); border-radius: 1.5rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.usage-safety-head { max-width: 43rem; }
.usage-safety-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.85rem; }
.usage-safety-grid article { padding: 1.2rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(245,247,244,0.78); }
.usage-safety-grid h3 { margin-bottom: 0.3rem; }
.usage-safety-grid p { margin: 0; color: var(--muted); font-size: 0.88rem; }

.pricing-heading { display: grid; grid-template-columns: 1fr 0.72fr; gap: 3rem; align-items: end; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.pricing-card { padding: clamp(1.5rem, 4vw, 2.25rem); border: 1px solid var(--line); border-radius: 1.4rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.pricing-card.featured { border-color: rgba(8,127,131,0.35); }
.plan-top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.plan-device { font-size: 1.25rem; font-weight: 800; }
.plan-status { padding: 0.3rem 0.65rem; border-radius: 999px; background: var(--teal-soft); color: var(--teal-dark); font-size: 0.72rem; font-weight: 750; }
.trial { margin: 1.6rem 0 0.45rem; color: var(--muted); }
.trial strong { color: var(--teal); }
.price { margin: 0; font-size: clamp(1.8rem, 4vw, 2.4rem); font-weight: 800; letter-spacing: -0.04em; }
.price span { margin-right: 0.55rem; color: var(--muted); font-size: 0.78rem; font-weight: 650; letter-spacing: 0; }
.plain-list { margin: 1.5rem 0 0; padding: 1.2rem 0 0; border-top: 1px solid var(--line); list-style: none; color: var(--muted); font-size: 0.88rem; }
.plain-list li + li { margin-top: 0.4rem; }
.plain-list li::before { content: "—"; margin-right: 0.5rem; color: var(--teal); }
.availability-note { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem 1rem; margin-top: 1rem; padding: 1rem 1.2rem; border-radius: 1rem; background: var(--teal-soft); }
.availability-note strong { color: var(--teal-dark); }
.availability-note span { color: var(--muted); font-size: 0.82rem; }
.section-footnote { margin: 1rem 0 0; padding-left: 0.9rem; border-left: 2px solid var(--line); color: var(--muted); font-size: 0.8rem; }
.network-note { margin: 0.65rem 0 0; color: var(--muted); font-size: 0.8rem; }

.pre-registration-section { display: grid; grid-template-columns: 0.88fr 1.12fr; gap: clamp(2rem, 6vw, 5rem); padding: clamp(2rem, 5vw, 4rem); border-radius: 2rem; background: linear-gradient(140deg, #dff5f1, #f7eee2); }
.pre-registration-copy > p:not(.eyebrow) { max-width: 34rem; color: var(--ink-soft); }
.pre-registration-points { margin: 1.4rem 0 0; padding: 0; list-style: none; color: var(--ink-soft); font-size: 0.9rem; }
.pre-registration-points li { position: relative; padding: 0.32rem 0 0.32rem 1.55rem; }
.pre-registration-points li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 800; }
.pre-registration-form { padding: clamp(1.35rem, 3vw, 2rem); border: 1px solid rgba(8,127,131,0.2); border-radius: 1.25rem; background: rgba(255,255,255,0.84); box-shadow: var(--shadow-sm); }
.form-field + .form-field, .consent-check { margin-top: 1rem; }
.form-field label { display: block; margin-bottom: 0.4rem; font-size: 0.88rem; font-weight: 750; }
.form-field input[type="email"] { width: 100%; min-height: 3.1rem; padding: 0.7rem 0.85rem; border: 1px solid var(--line); border-radius: 0.75rem; color: var(--ink); background: white; font: inherit; }
.form-field input[type="email"]:focus { border-color: var(--teal); outline: 3px solid rgba(16,166,168,0.18); outline-offset: 1px; }
.form-field p, .form-footnote { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.78rem; }
.form-honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.consent-check { display: flex; gap: 0.65rem; align-items: flex-start; color: var(--ink-soft); font-size: 0.82rem; line-height: 1.55; }
.consent-check input { width: 1rem; height: 1rem; flex: 0 0 auto; margin-top: 0.2rem; accent-color: var(--teal-dark); }
.pre-registration-form .button { width: 100%; margin-top: 1.15rem; }
.form-status { min-height: 1.75rem; margin: 0.7rem 0 0; color: var(--teal-dark); font-size: 0.86rem; font-weight: 650; }
.form-status[data-state="error"] { color: #9b4d1a; }

.faq-section { display: grid; grid-template-columns: 0.5fr 1fr; gap: clamp(2rem, 7vw, 6rem); border-top: 1px solid var(--line); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 1.25rem 2.4rem 1.25rem 0; cursor: pointer; font-weight: 750; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 0.25rem; top: 1.05rem; color: var(--teal); font-size: 1.4rem; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: -0.35rem 0 1.35rem; color: var(--muted); font-size: 0.92rem; }

.final-message { padding: clamp(3rem, 7vw, 5rem); border-radius: 2rem; background: linear-gradient(140deg, #dff5f1, #f7eee2); text-align: center; }
.final-message p:not(.eyebrow) { max-width: 42rem; margin: 0 auto 1.5rem; color: var(--ink-soft); }
.final-message .final-footnote { margin: 0.9rem auto 0; color: var(--muted); font-size: 0.8rem; }
.legal-notice { padding-top: 2rem; }
.notice { margin: 1.5rem 0; padding: 1.1rem 1.2rem; border-left: 4px solid var(--teal); border-radius: 0.25rem 0.9rem 0.9rem 0.25rem; background: var(--teal-soft); }
.notice.warning { border-left-color: #cf7d25; background: var(--warm); color: var(--warning); }

.page-head { max-width: 48rem; padding: 4rem 0 2rem; }
.prose { max-width: 52rem; padding-bottom: 5rem; }
.prose h2 { margin-top: 2.8rem; padding-top: 0.4rem; font-size: 1.5rem; }
.prose h3 { margin-top: 1.5rem; }
.prose li + li { margin-top: 0.42rem; }
.prose table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; }
.prose th, .prose td { padding: 0.75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; min-width: 9rem; }
.prose th { background: #eef2f0; }
.contact { padding: 1.4rem; border: 1px solid var(--line); border-radius: 1rem; background: white; }
.card { padding: 1.35rem; border: 1px solid var(--line); border-radius: 1.2rem; background: var(--surface); }
.card p { margin: 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }

.site-footer { margin-top: 5rem; border-top: 1px solid var(--line); }
.footer-inner { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; padding: 2rem 0 3rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: 0.86rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .product-preview { max-width: 38rem; margin: 0 auto; transform: none; }
  .pain-grid, .feature-grid { grid-template-columns: 1fr 1fr; }
  .privacy-panel, .security-overview, .faq-section, .usecase-grid, .pre-registration-section { grid-template-columns: 1fr; }
  .pricing-heading { grid-template-columns: 1fr; gap: 0; }
}

@media (max-width: 680px) {
  html { scroll-padding-top: 0; }
  .site-header { position: static; }
  .nav { align-items: flex-start; padding: 0.9rem 0; flex-direction: column; gap: 0.75rem; }
  .nav-links { width: 100%; gap: 0.35rem 0.85rem; font-size: 0.8rem; }
  .hero { padding-top: 3.2rem; }
  .hero h1 { font-size: clamp(2.5rem, 13vw, 4.2rem); }
  .use-cases-page .page-head h1 { font-size: clamp(2.25rem, 9vw, 2.8rem); }
  .hero-actions .button { width: 100%; }
  .product-preview { overflow: hidden; }
  .trust-strip, .pain-grid, .audience-grid, .feature-grid, .pricing-grid, .security-flow, .usage-safety-grid, .grid { grid-template-columns: 1fr; }
  .trust-strip > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .workflow-list li { grid-template-columns: 3rem 1fr; gap: 0.85rem; }
  .workflow-number { width: 2.5rem; height: 2.5rem; }
  .soap-grid { grid-template-columns: 1fr; }
  .pricing-card { padding: 1.4rem; }
  .final-message { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}