/* Layout: left-aligned technical-editorial page; hero pairs the pitch with a sample management console. */
:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --ink: #0e1a2b;
  --muted: #55647a;
  --line: #d8dfe9;
  --accent: #1f4fd1;
  --accent-soft: #e6edfc;
  --accent-ink: #ffffff;
  --signal: #0b8a64;
  --signal-soft: #dff3ec;
  --idle: #8a95a6;
  --console-bg: #0f1a2a;
  --console-fg: #d7e2f1;
  --console-dim: #7f90a8;
  --console-line: #233450;
  --notice-bg: #eef2f8;

  --font-display: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-body: "IBM Plex Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.375rem;
  --step-3: 1.75rem;
  --step-4: clamp(2rem, 4.2vw, 3rem);
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a111b;
    --surface: #111b29;
    --ink: #e5ebf4;
    --muted: #93a2b7;
    --line: #22314a;
    --accent: #7096ff;
    --accent-soft: #17264a;
    --accent-ink: #0a111b;
    --signal: #3fca9b;
    --signal-soft: #10302a;
    --idle: #6c7a90;
    --console-bg: #060c15;
    --console-fg: #d7e2f1;
    --console-dim: #7f90a8;
    --console-line: #1d2b41;
    --notice-bg: #0f1826;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a111b;
  --surface: #111b29;
  --ink: #e5ebf4;
  --muted: #93a2b7;
  --line: #22314a;
  --accent: #7096ff;
  --accent-soft: #17264a;
  --accent-ink: #0a111b;
  --signal: #3fca9b;
  --signal-soft: #10302a;
  --idle: #6c7a90;
  --console-bg: #060c15;
  --console-fg: #d7e2f1;
  --console-dim: #7f90a8;
  --console-line: #1d2b41;
  --notice-bg: #0f1826;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.8;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 0.2em; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.35; text-wrap: balance; margin: 0; }
p { margin: 0; }

.wrap {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Header */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 12px;
  flex-wrap: wrap;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}
.logo svg { width: 28px; height: 28px; flex: none; }
.nav { display: flex; gap: 4px 18px; flex-wrap: wrap; font-size: 0.92rem; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--ink); }

/* Hero */
.hero { padding-block: 64px 56px; }
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 44px;
  align-items: center;
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.hero h1 { font-size: var(--step-4); font-weight: 900; letter-spacing: 0.01em; }
.hero .lead { margin-top: 20px; color: var(--muted); max-width: 34em; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); }

/* Console sample */
.console {
  background: var(--console-bg);
  color: var(--console-fg);
  border-radius: 14px;
  border: 1px solid var(--console-line);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  overflow: hidden;
  box-shadow: 0 24px 48px -28px rgba(8, 18, 36, 0.55);
}
.console-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--console-line);
  color: var(--console-dim);
}
.console-bar strong { color: var(--console-fg); font-weight: 500; }
.sample-tag {
  border: 1px solid var(--console-line);
  border-radius: 999px;
  padding: 1px 10px;
  font-size: 0.72rem;
  white-space: nowrap;
}
.console-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.console-table th, .console-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--console-line);
  vertical-align: middle;
  white-space: nowrap;
}
.console-table th { color: var(--console-dim); font-weight: 400; font-size: 0.74rem; letter-spacing: 0.06em; }
.console-table tr:last-child td { border-bottom: 0; }
.acct small { display: block; color: var(--console-dim); font-size: 0.72rem; }
.state { display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 3px color-mix(in srgb, var(--signal) 25%, transparent); }
.dot.off { background: var(--idle); box-shadow: none; }
.switch {
  display: inline-block;
  width: 34px;
  height: 20px;
  border-radius: 999px;
  background: var(--signal);
  position: relative;
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 17px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
}
.switch.off { background: var(--console-line); }
.switch.off::after { left: 3px; background: var(--console-dim); }
.console-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 11px 16px;
  border-top: 1px solid var(--console-line);
  color: var(--console-dim);
  font-size: 0.74rem;
}
.console-scroll { overflow-x: auto; }
.console-table td:last-child, .console-table th:last-child { text-align: right; }

/* Notice band */
.notice { background: var(--notice-bg); border-block: 1px solid var(--line); }
.notice .wrap { padding-block: 22px; display: flex; gap: 14px; align-items: flex-start; }
.notice svg { flex: none; width: 22px; height: 22px; color: var(--accent); margin-top: 3px; }
.notice p { font-size: 0.95rem; }
.notice strong { font-weight: 700; }

/* Sections */
.section { padding-block: 80px; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 40em; margin-bottom: 40px; }
.section-head h2 { font-size: var(--step-3); font-weight: 900; }
.section-head p { margin-top: 12px; color: var(--muted); }

.features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px 40px;
}
.feature { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.feature svg { width: 28px; height: 28px; color: var(--accent); }
.feature h3 { font-size: var(--step-1); font-weight: 700; }
.feature p { color: var(--muted); font-size: 0.95rem; }

/* Flow */
.flows { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.flow {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  min-width: 0;
}
.flow h3 { font-size: var(--step-2); font-weight: 700; }
.flow .who { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.steps { list-style: none; margin: 22px 0 0; padding: 0; counter-reset: step; display: grid; gap: 16px; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; }
.steps li::before {
  content: counter(step);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: var(--accent);
  background: var(--bg);
}
.steps strong { display: block; font-weight: 700; }
.steps span { color: var(--muted); font-size: 0.92rem; }

/* Pricing */
.plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.plan {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}
.plan-label { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.1em; color: var(--muted); text-transform: uppercase; }
.plan h3 { font-size: var(--step-2); font-weight: 700; }
.price-lines { display: grid; gap: 10px; border-block: 1px solid var(--line); padding-block: 18px; }
.price-line { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.price-line .what { color: var(--muted); font-size: 0.95rem; }
.price { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 1.9rem; font-weight: 500; color: var(--ink); }
.price small { font-family: var(--font-body); font-size: 0.85rem; color: var(--muted); font-weight: 400; margin-left: 4px; }
.plan ul { margin: 0; padding-left: 1.2em; color: var(--muted); font-size: 0.92rem; display: grid; gap: 4px; }
.example {
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
.terms-box {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px 28px;
  font-size: 0.92rem;
}
.terms-box div { min-width: 0; }
.terms-box dt { font-weight: 700; }
.terms-box dd { margin: 2px 0 0; color: var(--muted); }

/* FAQ */
.faq { display: grid; gap: 0; border-top: 1px solid var(--line); max-width: 52em; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 36px 18px 0;
  font-weight: 700;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 16px;
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.2rem;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: 20px; color: var(--muted); max-width: 46em; }

/* Contact */
.contact-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 28px;
  max-width: 44em;
}
.mail { font-family: var(--font-mono); font-size: 1.15rem; user-select: all; overflow-wrap: anywhere; }
.copy-status { font-size: 0.85rem; color: var(--signal); min-height: 1.4em; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 48px 40px; font-size: 0.88rem; color: var(--muted); }
.site-footer .wrap { display: grid; gap: 22px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-links a { color: var(--ink); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }
.disclaimer { max-width: 60em; display: grid; gap: 8px; }

/* Legal pages */
.legal { padding-block: 56px 80px; }
.legal .doc { max-width: 46em; }
.legal h1 { font-size: var(--step-3); font-weight: 900; }
.legal .meta { color: var(--muted); font-size: 0.9rem; margin-top: 10px; }
.legal h2 { font-size: var(--step-1); font-weight: 700; margin-top: 40px; margin-bottom: 10px; }
.legal p, .legal li { font-size: 0.97rem; }
.legal p + p { margin-top: 10px; }
.legal ol, .legal ul { padding-left: 1.4em; margin: 8px 0 0; display: grid; gap: 6px; }
.legal .intro { margin-top: 28px; }
.legal-table-wrap { overflow-x: auto; margin-top: 28px; }
.legal-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; min-width: 520px; }
.legal-table th, .legal-table td { border-bottom: 1px solid var(--line); padding: 14px 12px; vertical-align: top; text-align: left; }
.legal-table th { width: 30%; font-weight: 700; background: var(--surface); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; margin-top: 12px; min-width: 480px; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.data-table th { background: var(--surface); font-weight: 700; }
.back-link { display: inline-block; margin-bottom: 24px; font-size: 0.9rem; }

/* Responsive */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .features { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flows, .plans { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .hero { padding-block: 40px 40px; }
  .section { padding-block: 56px; }
  .features { grid-template-columns: minmax(0, 1fr); }
  .flow, .plan { padding: 22px 18px; }
  .nav { font-size: 0.85rem; gap: 4px 14px; }
}