:root {
    --bg: #ffffff;
    --bg-alt: #f3f6fb;
    --fg: #0e1525;
    --muted: #556075;
    --border: #dde3ee;
    --surface: #ffffff;
    --primary: #1d4ed8;
    --primary-hover: #1e40af;
    --hero-from: #0b1f4d;
    --hero-to: #1d4ed8;
    --accent: #fca5a5;
    --danger: #b91c1c;
    --warning: #c2410c;
    --official: #15803d;
    --neutral: #4b5563;
    color-scheme: light;
}
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0c0f16;
        --bg-alt: #121723;
        --fg: #e8ecf3;
        --muted: #9aa4b7;
        --border: #232a39;
        --surface: #151b28;
        --primary: #3b82f6;
        --primary-hover: #60a5fa;
        --hero-from: #050b1c;
        --hero-to: #12307a;
        --danger: #ef4444;
        --warning: #f97316;
        --official: #22c55e;
        --neutral: #9ca3af;
        color-scheme: dark;
    }
}
:root[data-theme="dark"] {
    --bg: #0c0f16;
    --bg-alt: #121723;
    --fg: #e8ecf3;
    --muted: #9aa4b7;
    --border: #232a39;
    --surface: #151b28;
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --hero-from: #050b1c;
    --hero-to: #12307a;
    --danger: #ef4444;
    --warning: #f97316;
    --official: #22c55e;
    --neutral: #9ca3af;
    color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
a { color: var(--primary); }
code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .92em; background: var(--bg-alt); padding: 1px 6px; border-radius: 6px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.nav { position: absolute; inset: 0 0 auto; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 16px; max-width: 1120px; margin: 0 auto; padding: 18px 16px; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; text-decoration: none; }
.logo img { border-radius: 8px; }
.nav nav { display: flex; gap: 22px; }
.nav nav a { color: rgba(255, 255, 255, .85); text-decoration: none; font-weight: 600; font-size: 15px; }
.nav nav a:hover { color: #fff; }
@media (max-width: 720px) { .nav nav { display: none; } }

.hero { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 48px; padding: 120px max(16px, calc((100vw - 1088px) / 2)) 80px;
    background: radial-gradient(1200px 600px at 80% 0%, rgba(255, 255, 255, .08), transparent), linear-gradient(160deg, var(--hero-from), var(--hero-to)); color: #fff; }
.eyebrow { display: inline-block; margin: 0 0 18px; padding: 5px 12px; border-radius: 999px; background: rgba(255, 255, 255, .12); font-size: 14px; font-weight: 700; letter-spacing: .02em; }
.hero h1 { margin: 0; font-size: clamp(38px, 6vw, 64px); line-height: 1.04; letter-spacing: -.025em; font-weight: 900; }
.hero h1 span { color: var(--accent); }
.lead { margin: 22px 0 30px; font-size: clamp(18px, 2.2vw, 20px); color: rgba(255, 255, 255, .86); max-width: 560px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; padding: 14px 22px; border-radius: 12px; font: inherit; font-weight: 700; text-decoration: none; cursor: pointer; border: 2px solid transparent; }
.button.primary { background: #fff; color: #0b1f4d; }
.button.primary:hover { background: #e8eefc; }
.button.ghost { border-color: rgba(255, 255, 255, .55); color: #fff; background: transparent; }
.button.ghost:hover { background: rgba(255, 255, 255, .1); }
.section .button.primary, .try .button.primary { background: var(--primary); color: #fff; }
.section .button.primary:hover, .try .button.primary:hover { background: var(--primary-hover); }
.section .button.ghost { border-color: var(--border); color: var(--fg); }
.section .button.ghost:hover { background: var(--bg-alt); }

.phone { justify-self: center; width: 280px; padding: 12px; border-radius: 44px; background: #0a0a0a; box-shadow: 0 40px 80px rgba(0, 0, 0, .45), inset 0 0 0 2px #2a2a2a; transform: rotate(3deg); }
.phone-screen { height: 540px; border-radius: 34px; background: #b91c1c; color: #fff; text-align: center; padding: 52px 20px 20px; display: flex; flex-direction: column; align-items: center; }
.phone-icon { font-size: 54px; line-height: 1; }
.phone-title { margin-top: 10px; font-size: 34px; line-height: 1.02; font-weight: 900; }
.phone-sub { margin-top: 12px; font-weight: 700; }
.phone-host { margin-top: 14px; padding: 6px 10px; border-radius: 8px; background: rgba(0, 0, 0, .28); font: 700 13px ui-monospace, Menlo, monospace; }
.phone-list { margin-top: 14px; padding: 12px; border-radius: 10px; background: rgba(0, 0, 0, .2); font-size: 13px; text-align: left; display: grid; gap: 6px; }
.phone-list span::before { content: "• "; }
.phone-button { margin-top: auto; width: 100%; padding: 12px; border-radius: 12px; background: #fff; color: #111; font-weight: 700; font-size: 14px; }
@media (max-width: 860px) {
    .hero { grid-template-columns: 1fr; padding-top: 100px; }
    .phone { transform: none; width: 250px; }
    .phone-screen { height: 480px; }
}

.try { max-width: 860px; margin: -40px auto 0; position: relative; padding: 28px; border-radius: 20px; background: var(--surface); border: 1px solid var(--border); box-shadow: 0 20px 50px rgba(15, 23, 42, .12); }
@media (max-width: 900px) { .try { margin: 24px 16px 0; padding: 22px 18px; } }
.try h2 { margin: 0; font-size: 24px; }
.try > p { margin: 4px 0 16px; color: var(--muted); }
.try-form { display: flex; gap: 10px; }
.try-form input { flex: 1; min-width: 0; padding: 14px 16px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg); color: var(--fg); font: inherit; }
.try-form input:focus { outline: none; border-color: var(--primary); }
@media (max-width: 520px) { .try-form { flex-direction: column; } }
.examples { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; font-size: 14px; color: var(--muted); }
.examples button { font: inherit; font-family: ui-monospace, Menlo, monospace; font-size: 13px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg-alt); color: var(--fg); cursor: pointer; }
.try-result { margin-top: 18px; padding: 16px 18px; border-radius: 14px; border-left: 6px solid var(--neutral); background: var(--bg-alt); }
.try-result[data-level="danger"] { border-color: var(--danger); }
.try-result[data-level="warning"] { border-color: var(--warning); }
.try-result[data-level="official"] { border-color: var(--official); }
.try-verdict { margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 18px; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: var(--neutral); }
[data-level="danger"] .dot { background: var(--danger); }
[data-level="warning"] .dot { background: var(--warning); }
[data-level="official"] .dot { background: var(--official); }
[data-level="danger"] strong { color: var(--danger); }
[data-level="warning"] strong { color: var(--warning); }
[data-level="official"] strong { color: var(--official); }
.try-result ul { margin: 8px 0 0; padding-left: 22px; }
.try-result ul:empty { display: none; }

.section { max-width: 1120px; margin: 0 auto; padding: 88px 16px 0; }
.section h2 { margin: 0; font-size: clamp(28px, 4vw, 40px); letter-spacing: -.015em; line-height: 1.15; }
.section-lead { max-width: 720px; color: var(--muted); font-size: 19px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; margin-top: 32px; }
.card { padding: 22px; border-radius: 16px; background: var(--bg-alt); border: 1px solid var(--border); }
.card-icon { font-size: 30px; }
.card h3 { margin: 8px 0 6px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }

.install { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; margin-top: 28px; }
.install-card { padding: 26px; border-radius: 18px; border: 1px solid var(--border); background: var(--surface); }
.install-card h3 { margin: 0 0 6px; font-size: 22px; }
.install-card p { margin: 0; color: var(--muted); }
.install-card ol { margin: 16px 0 22px; padding-left: 22px; }
.install-card li { margin-bottom: 8px; }

.faq details { border-bottom: 1px solid var(--border); padding: 16px 0; }
.faq h2 { margin-bottom: 16px; }
.faq summary { cursor: pointer; font-weight: 700; font-size: 18px; }
.faq details p { margin: 10px 0 0; color: var(--muted); }

.footer { max-width: 1120px; margin: 88px auto 0; padding: 28px 16px 40px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.footer p { margin: 4px 0; }
.footer a { color: inherit; }