:root {
  --accent: #1d4e89;
  --accent-dark: #163d6b;
  --accent-soft: #eef3f9;
  --accent-line: #c9d8ea;
  --ink: #142233;
  --ink-2: #3c4a5c;
  --muted: #5d6a7a;
  --line: #e2e7ee;
  --bg: #ffffff;
  --bg-2: #f6f8fb;
  --low: #23704f;
  --low-soft: #e7f4ee;
  --warn: #8a5a00;
  --warn-soft: #fdf3dc;
  --bad: #a1302b;
  --radius: 10px;
  --font: "Noto Sans", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "Noto Sans Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); font-size: 16px; line-height: 1.65; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; }
h1, h2, h3 { line-height: 1.25; margin: 0; letter-spacing: -0.01em; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.num { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.tiny { font-size: 12.5px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid #7aa7dc; outline-offset: 2px; }

/* nav */
.nav { border-bottom: 1px solid var(--line); background: #fff; position: sticky; top: 0; z-index: 10; }
.nav .wrap { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; min-height: 44px; min-width: 44px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 18px; letter-spacing: -0.01em; flex: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links { display: none; gap: 24px; margin-left: 24px; }
.nav-links a { color: var(--ink-2); text-decoration: none; font-size: 15px; }
.nav-links a:hover { color: var(--accent); }
.nav-end { margin-left: auto; display: flex; align-items: center; gap: 4px; min-width: 0; }
.nav-login { color: var(--ink-2); text-decoration: none; font-size: 15px; padding: 0 8px; min-height: 44px; display: inline-flex; align-items: center; white-space: nowrap; }
@media (min-width: 860px) { .nav-links { display: flex; } }
@media (max-width: 400px) { .nav .wrap { gap: 8px; padding: 0 14px; } .nav .brand span { display: none; } .nav .btn { padding: 8px 12px; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: #fff; font: inherit; font-weight: 600; font-size: 15px; text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--accent-dark); color: #fff; }
.btn.ghost { background: #fff; color: var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); color: var(--accent-dark); }
.btn.big { min-height: 52px; padding: 12px 28px; font-size: 16px; }
.btn.small { min-height: 36px; padding: 6px 14px; font-size: 14px; }
.btn.danger { background: #fff; color: var(--bad); border-color: #e3b9b6; }
.btn[disabled] { opacity: .55; cursor: default; }
.nav .btn { min-height: 40px; padding: 8px 14px; font-size: 14px; }

/* hero */
.hero { padding: 56px 0 64px; background: linear-gradient(180deg, var(--bg-2), #fff 70%); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; gap: 40px; }
.eyebrow { font-size: 15px; font-weight: 600; color: var(--accent); margin-bottom: 14px; }
.hero h1 { font-size: clamp(30px, 6.4vw, 46px); font-weight: 750; margin-bottom: 18px; }
.hero .sub { font-size: 17.5px; color: var(--ink-2); max-width: 38em; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 28px; }
.cta-note { font-size: 14px; color: var(--muted); }
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1fr 1.08fr; align-items: center; gap: 56px; } .hero { padding: 80px 0 88px; } }

/* product screen */
.screen { border: 1px solid var(--line); border-radius: 14px; background: #fff; box-shadow: 0 1px 2px rgba(20,34,51,.05), 0 18px 40px -18px rgba(20,34,51,.25); overflow: hidden; }
.screen-bar { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--bg-2); font-size: 13px; color: var(--muted); }
.screen-bar b { color: var(--ink); font-weight: 600; }
.sample { margin-left: auto; font-size: 12.5px; font-weight: 600; color: var(--warn); background: var(--warn-soft); padding: 2px 9px; border-radius: 99px; white-space: nowrap; }
.row { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.row-top { display: flex; gap: 10px; align-items: baseline; justify-content: space-between; }
.row-title { font-weight: 600; font-size: 15px; line-height: 1.4; }
.row-meta { font-size: 13px; color: var(--muted); margin-top: 2px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip { font-size: 12.5px; padding: 3px 9px; border-radius: 99px; background: var(--accent-soft); color: var(--accent-dark); white-space: nowrap; }
.chip.low { background: var(--low-soft); color: var(--low); font-weight: 600; }
.chip.plain { background: var(--bg-2); color: var(--ink-2); }
.deadline { font-size: 12.5px; color: var(--ink-2); white-space: nowrap; }
.prices { font-size: 13px; color: var(--ink-2); margin-top: 6px; }

/* sections */
section { padding: 52px 0; }
@media (min-width: 760px) { section { padding: 72px 0; } }
@media (max-width: 759px) { .screen .row.extra { display: none; } .hero { padding: 40px 0 48px; } .sec-head { margin-bottom: 24px; } }
section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 680px; margin-bottom: 36px; }
.sec-head h2 { font-size: clamp(24px, 4.4vw, 32px); font-weight: 700; margin-bottom: 12px; }
.sec-head p { color: var(--ink-2); font-size: 17px; }
.grid { display: grid; gap: 20px; }
@media (min-width: 760px) { .grid.two { grid-template-columns: 1fr 1fr; } .grid.three { grid-template-columns: repeat(3, 1fr); } .grid.four { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .grid.four { grid-template-columns: repeat(4, 1fr); } }
.card { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; padding: 24px; }
.card h3 { font-size: 17px; margin-bottom: 8px; }
.card p { color: var(--ink-2); font-size: 15px; }

.stat-n { font-size: 40px; font-weight: 750; color: var(--accent); line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat-t { color: var(--ink-2); font-size: 15px; margin-top: 8px; }
.stat-src { font-size: 12.5px; color: var(--muted); margin-top: 10px; }

.steps { counter-reset: s; display: grid; gap: 20px; }
.step { position: relative; padding: 24px 24px 24px 72px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.step::before { counter-increment: s; content: counter(s); position: absolute; left: 24px; top: 22px; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: 15px; }
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { color: var(--ink-2); font-size: 15px; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(3, 1fr); } }

.feat { border-top: 2px solid var(--accent); padding-top: 16px; }
.feat h3 { font-size: 17px; margin-bottom: 8px; }
.feat p { color: var(--ink-2); font-size: 15px; }
.who { display: grid; gap: 0; border-top: 1px solid var(--line); }
.who div { display: grid; gap: 4px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.who b { font-size: 16px; }
.who span { color: var(--ink-2); font-size: 15px; }
@media (min-width: 760px) { .who div { grid-template-columns: 220px 1fr; gap: 24px; } }

.mail { border: 1px solid var(--line); border-radius: 12px; background: #fff; font-size: 14px; overflow: hidden; }
.mail-head { padding: 14px 18px; border-bottom: 1px solid var(--line); background: var(--bg-2); font-size: 13px; color: var(--muted); }
.mail-head b { color: var(--ink); }
.mail-body { padding: 18px; }
.mail-body ol { padding-left: 20px; margin: 10px 0 0; }
.mail-body li { margin-bottom: 14px; }
.mail-body li:last-child { margin-bottom: 0; }

/* forms */
.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label, .label { font-size: 14px; font-weight: 600; color: var(--ink); }
input[type=text], input[type=email], input[type=password], input[type=search], input:not([type]), select, textarea {
  font: inherit; font-size: 16px; color: var(--ink); width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #c8d0db; border-radius: 8px; background: #fff;
}
textarea { min-height: 96px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 3px solid #b9d0ec; border-color: var(--accent); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--ink-2); }
.check input { width: 18px; height: 18px; margin-top: 4px; flex: none; }
.inline-form { display: flex; gap: 10px; flex-wrap: wrap; }
.inline-form input { flex: 1 1 200px; min-width: 0; }
.inline-form .btn { flex: none; }
.msg { padding: 12px 14px; border-radius: 8px; font-size: 14.5px; margin: 12px 0; }
.msg.err { background: #fbeceb; color: var(--bad); }
.msg.ok { background: var(--low-soft); color: var(--low); }
.msg.info { background: var(--accent-soft); color: var(--accent-dark); }
[hidden] { display: none !important; }

/* price */
.price-card { max-width: 520px; border: 2px solid var(--accent); border-radius: 14px; padding: 32px; background: #fff; }
.price { font-size: 48px; font-weight: 750; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.price small { font-size: 17px; font-weight: 500; color: var(--muted); letter-spacing: 0; }
.ticks { list-style: none; padding: 0; margin: 20px 0 24px; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 28px; color: var(--ink-2); }
.ticks li::before { content: ""; position: absolute; left: 4px; top: 7px; width: 12px; height: 7px; border-left: 2.5px solid var(--low); border-bottom: 2.5px solid var(--low); transform: rotate(-45deg); }

/* faq */
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; padding: 16px 32px 16px 0; font-weight: 600; font-size: 16.5px; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 22px; color: var(--accent); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 0 18px; color: var(--ink-2); max-width: 46em; }

.band { background: var(--accent); color: #fff; text-align: center; padding: 64px 0; }
.band h2 { font-size: clamp(24px, 4.4vw, 32px); margin-bottom: 12px; }
.band p { color: #d6e2f1; margin-bottom: 26px; }
.band .btn { background: #fff; color: var(--accent); border-color: #fff; }
.band .btn:hover { background: var(--accent-soft); }

footer.foot { border-top: 1px solid var(--line); padding: 32px 0 40px; font-size: 14px; color: var(--muted); }
footer.foot .wrap { display: grid; gap: 10px; }
footer.foot a { color: var(--ink-2); }
.syng-legal-links a { margin: 0 2px; }

/* app */
.app-main { padding: 32px 0 64px; min-height: 60vh; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin: 20px 0 24px; overflow-x: auto; }
.tabs a { padding: 10px 14px; text-decoration: none; color: var(--ink-2); font-size: 15px; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a[aria-current=page] { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.panel + .panel { margin-top: 16px; }
.panel-pad { padding: 20px; }
.list .row { padding: 16px 20px; }
.list .row-title a { color: var(--ink); text-decoration: none; }
.list .row-title a:hover { color: var(--accent); text-decoration: underline; }
.kv { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: 8px 18px; font-size: 15px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.stats-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; grid-template-columns: repeat(2, 1fr); }
.stats-grid > div { background: #fff; padding: 16px; }
.stats-grid b { display: block; font-size: 24px; font-variant-numeric: tabular-nums; color: var(--ink); }
.stats-grid span { font-size: 13px; color: var(--muted); }
@media (min-width: 760px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } .stats-grid.three { grid-template-columns: repeat(3, 1fr); } }
table.t { width: 100%; border-collapse: collapse; font-size: 14px; }
table.t th, table.t td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.t th { font-size: 13px; color: var(--muted); font-weight: 600; }
table.t td.r, table.t th.r { text-align: right; }
.scroll-x { overflow-x: auto; }
.pick { display: grid; gap: 8px; }
.pick label { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; font-size: 14.5px; }
.pick label:hover { border-color: var(--accent-line); }
.pick input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.code { font-family: var(--mono); font-size: 13.5px; color: var(--ink-2); }
.prov-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr)); gap: 2px 6px; }
.prov-grid label { display: flex; gap: 10px; align-items: center; font-size: 14px; padding: 4px 8px; min-height: 44px; border-radius: 6px; cursor: pointer; min-width: 0; overflow-wrap: anywhere; }
.prov-grid input { width: 22px; height: 22px; flex: none; margin: 0; }
.prov-grid label:hover { background: var(--bg-2); }
.loading { color: var(--muted); padding: 24px 20px; }
.spin { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--accent-line); border-top-color: var(--accent); border-radius: 50%; animation: sp 0.8s linear infinite; vertical-align: -2px; margin-right: 8px; }
@keyframes sp { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spin { animation: none; } }
.auth-box { max-width: 440px; margin: 48px auto; padding: 0 20px; }
.auth-box h1 { font-size: 26px; margin-bottom: 8px; }
.auth-box .lead { color: var(--ink-2); margin-bottom: 24px; }
.back { font-size: 14px; text-decoration: none; }
.pill { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 99px; background: var(--bg-2); color: var(--ink-2); }
.pill.new { background: var(--accent); color: #fff; }
.note { font-size: 13px; color: var(--muted); }
.ai-out { white-space: pre-wrap; background: var(--bg-2); border-radius: 8px; padding: 14px 16px; font-size: 14.5px; }