/* SuguNavi — 製品LP（依存なし・ビルド不要） */

:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --surface: #ffffff;
  --fg: #0f172a;
  --fg-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #eff4ff;
  --accent-fg: #ffffff;
  --warn: #f59e0b;
  --code-bg: #0f172a;
  --code-fg: #e2e8f0;
  --shadow: 0 20px 50px rgba(15, 23, 42, .12), 0 2px 6px rgba(15, 23, 42, .06);
  --radius: 14px;
  --font: system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "PingFang SC", "PingFang TC", "Apple SD Gothic Neo", "Noto Sans JP", "Noto Sans SC", "Noto Sans TC", "Noto Sans KR", "Yu Gothic UI", "Meiryo", "Microsoft YaHei", "Malgun Gothic", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #0f172a;
    --surface: #131c2e;
    --fg: #e2e8f0;
    --fg-2: #cbd5e1;
    --muted: #94a3b8;
    --line: #243047;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-soft: #15233d;
    --accent-fg: #0b1220;
    --code-bg: #060b16;
    --shadow: 0 20px 50px rgba(0, 0, 0, .45);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.8 var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3 { line-height: 1.35; margin: 0; letter-spacing: .01em; }
p { margin: 0; }
a { color: var(--accent); }
code {
  font-family: var(--mono);
  font-size: .88em;
  background: var(--accent-soft);
  padding: .1em .4em;
  border-radius: 5px;
  overflow-wrap: anywhere;
}
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }
.muted { color: var(--muted); }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-fg); padding: 8px 14px; border-radius: 8px;
}
.skip:focus { top: 12px; }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 44px; padding: 10px 20px; border-radius: 10px;
  font-weight: 700; font-size: 15px; text-decoration: none; white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-sm { min-height: 38px; padding: 7px 14px; font-size: 14px; }
.btn-lg { min-height: 52px; padding: 13px 26px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: var(--surface); color: var(--fg); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-light { background: #fff; color: #1e3a8a; }
.btn-light:hover { background: #e0e7ff; }
.btn-outline-light { color: #fff; border-color: rgba(255, 255, 255, .55); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .1); border-color: #fff; }

/* ナビ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.6) blur(10px);
  backdrop-filter: saturate(1.6) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 9px; color: var(--fg); text-decoration: none; font-weight: 800; font-size: 17px; white-space: nowrap; }
.logo-mark { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: var(--accent-fg); display: grid; place-items: center; }
.logo-mark svg { width: 19px; height: 19px; }
.nav-links { display: flex; gap: 22px; margin-left: 12px; }
.nav-links a { color: var(--fg-2); text-decoration: none; font-size: 14.5px; font-weight: 600; }
.nav-links a:hover { color: var(--accent); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.lang-switch { position: relative; }
.lang-btn {
  height: 34px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--surface); color: var(--fg); font: inherit; font-size: 13px; font-weight: 700; cursor: pointer;
}
.lang-btn:hover { border-color: var(--accent); color: var(--accent); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 30; margin: 0; padding: 6px;
  list-style: none; min-width: 148px; background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; box-shadow: var(--shadow);
}
.lang-item {
  display: block; width: 100%; text-align: left; border: 0; background: transparent; color: var(--fg);
  font: inherit; font-size: 14px; font-weight: 600; padding: 8px 10px; border-radius: 7px; cursor: pointer;
}
.lang-item:hover, .lang-item[aria-checked="true"] { background: var(--accent-soft); color: var(--accent); }
.link-quiet { color: var(--fg-2); text-decoration: none; font-size: 14.5px; font-weight: 600; }
.link-quiet:hover { color: var(--accent); }

/* ヒーロー */
.hero {
  padding: 72px 0 88px;
  background:
    radial-gradient(900px 420px at 85% -10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    radial-gradient(600px 300px at -10% 20%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%);
}
.hero-in { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.eyebrow { color: var(--accent); font-weight: 800; font-size: 13.5px; letter-spacing: .08em; margin-bottom: 14px; }
.hero h1 { font-size: clamp(26px, 3.4vw, 42px); font-weight: 900; letter-spacing: -.005em; }
.hero h1 .hl {
  display: inline-block;
  background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 26%, transparent) 62%);
  padding: 0 .05em;
}
.lead { margin-top: 22px; font-size: 17px; color: var(--fg-2); max-width: 36em; }
.lead strong { color: var(--fg); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-cta.center { justify-content: center; }
.hero-points { display: flex; flex-wrap: wrap; gap: 6px 18px; list-style: none; padding: 0; margin: 22px 0 0; color: var(--muted); font-size: 14px; }
.hero-points li::before { content: "✓"; color: var(--accent); font-weight: 800; margin-right: 6px; }

/* ヒーローのモック */
.mock {
  border-radius: 14px; background: var(--surface); border: 1px solid var(--line);
  box-shadow: var(--shadow); overflow: hidden; font-size: 12px; line-height: 1.5;
  min-width: 0;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 10px 12px; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.mock-url { margin-left: 10px; flex: 1; min-width: 0; padding: 3px 10px; border-radius: 6px; background: var(--surface); color: var(--muted); font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-body { position: relative; display: grid; grid-template-columns: 110px 1fr; min-height: 420px; }
.mock-side { display: flex; flex-direction: column; gap: 4px; padding: 14px 10px; border-right: 1px solid var(--line); background: var(--bg-alt); color: var(--muted); }
.mock-side b { color: var(--fg); font-size: 11.5px; margin-bottom: 8px; }
.mock-side span { padding: 4px 8px; border-radius: 6px; }
.mock-side span.on { background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.mock-main { padding: 16px 18px; min-width: 0; }
.mock-h { font-size: 16px; font-weight: 800; margin-bottom: 10px; }
.mock-tabs { display: flex; gap: 14px; border-bottom: 1px solid var(--line); margin-bottom: 14px; color: var(--muted); }
.mock-tabs span { padding-bottom: 6px; }
.mock-tabs span.on { color: var(--fg); font-weight: 700; box-shadow: inset 0 -2px 0 var(--accent); }
.mock-card { position: relative; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; max-width: 170px; }
.mock-row { width: 100%; }
.mock-line { display: block; height: 8px; border-radius: 4px; background: var(--line); }
.mock-line.w60 { width: 60%; } .mock-line.w40 { width: 40%; }
.mock-target, .mock-btn2 { padding: 6px 14px; border-radius: 7px; border: 1px solid var(--line); background: var(--surface); font-weight: 700; }
.mock-target {
  outline: 3px solid var(--accent); outline-offset: 4px;
  animation: mockpulse 1.6s ease-in-out infinite;
}
@keyframes mockpulse {
  0%, 100% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 22%, transparent); }
  50% { box-shadow: 0 0 0 12px color-mix(in srgb, var(--accent) 8%, transparent); }
}
.mock-tip {
  position: relative; margin-top: 4px; padding: 7px 10px; border-radius: 8px;
  background: #1e293b; color: #fff; font-weight: 600; font-size: 11.5px; max-width: 190px;
}
.mock-tip::before { content: ""; position: absolute; top: -5px; left: 18px; width: 10px; height: 10px; background: inherit; transform: rotate(45deg); }
@media (prefers-color-scheme: dark) { .mock-tip { background: #f8fafc; color: #0f172a; } }
.mock-chat {
  position: absolute; right: 12px; bottom: 12px; width: 205px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 10px; display: flex; flex-direction: column; gap: 7px;
}
.mock-chat-hd { display: flex; align-items: center; justify-content: space-between; font-weight: 800; font-size: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
.mock-seg { display: inline-flex; background: var(--bg-alt); border-radius: 999px; padding: 2px; font-size: 10.5px; font-weight: 700; color: var(--muted); }
.mock-seg em, .mock-seg span { font-style: normal; padding: 1px 8px; border-radius: 999px; }
.mock-seg em { background: var(--surface); color: var(--fg); box-shadow: 0 1px 2px rgba(0, 0, 0, .15); }
.mock-msg { padding: 6px 9px; border-radius: 10px; max-width: 92%; }
.mock-msg.u { align-self: flex-end; background: var(--accent); color: var(--accent-fg); border-bottom-right-radius: 3px; }
.mock-msg.a { align-self: flex-start; background: var(--bg-alt); border-bottom-left-radius: 3px; }
.mock-input { margin-top: 2px; padding: 6px 9px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); background: var(--bg-alt); }
@media (prefers-reduced-motion: reduce) { .mock-target { animation: none; } }

/* セクション共通 */
.section { padding: 96px 0; }
.section.alt { background: var(--bg-alt); }
.sec-title { font-size: clamp(24px, 3vw, 34px); font-weight: 900; }
.sec-lead { margin-top: 16px; color: var(--fg-2); font-size: 16.5px; max-width: 44em; }
.eyebrow.center + .sec-title { margin-bottom: 48px; }
.note { margin-top: 20px; color: var(--muted); font-size: 13.5px; }

/* 課題 */
.problem { padding-top: 72px; padding-bottom: 72px; border-top: 1px solid var(--line); }
.problem-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 36px; }
.problem-card { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--fg-2); font-size: 15px; }
.problem-card .q { color: var(--fg); font-weight: 800; font-size: 16.5px; margin-bottom: 8px; }

/* 特長 */
.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.feature { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.f-icon { width: 44px; height: 44px; border-radius: 11px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 16px; }
.f-icon svg { width: 22px; height: 22px; }
.feature h3 { font-size: 19px; margin-bottom: 8px; }
.feature p { color: var(--fg-2); font-size: 15px; }

/* しくみ */
.how { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.how-copy p { margin-top: 18px; color: var(--fg-2); }
.how-copy p.muted { color: var(--muted); font-size: 14px; }
.loop { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; position: relative; }
.loop li { display: flex; gap: 16px; padding: 20px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.loop-n { flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); font-weight: 800; display: grid; place-items: center; }
.loop b { font-size: 16.5px; }
.loop p { color: var(--fg-2); font-size: 14.5px; margin-top: 2px; }

/* 導入ステップ */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; counter-reset: s; }
.step { padding: 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); position: relative; }
.step-n { display: inline-block; font-size: 12px; font-weight: 800; letter-spacing: .1em; color: var(--accent); background: var(--accent-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 14px; }
.step h3 { font-size: 18px; margin-bottom: 8px; }
.step p { color: var(--fg-2); font-size: 14.5px; }
.code-card { margin-top: 28px; border-radius: var(--radius); overflow: hidden; background: var(--code-bg); border: 1px solid var(--line); }
.code-hd { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; color: #94a3b8; font-size: 13px; border-bottom: 1px solid rgba(148, 163, 184, .2); }
.copy { font: inherit; font-weight: 700; color: #e2e8f0; background: rgba(148, 163, 184, .18); border: 0; border-radius: 7px; padding: 5px 12px; cursor: pointer; min-height: 32px; }
.copy:hover { background: rgba(148, 163, 184, .3); }
.code-card pre { margin: 0; padding: 18px 16px; overflow-x: auto; }
.code-card code { background: none; padding: 0; color: var(--code-fg); font-size: 13.5px; word-break: normal; white-space: pre; }

/* 安全設計 */
.safety { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.safety-item { padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--accent); }
.safety-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.safety-item p { color: var(--fg-2); font-size: 14.5px; }

/* 料金 */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; padding: 30px 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.plan.featured { border: 2px solid var(--accent); box-shadow: var(--shadow); }
.badge { position: absolute; top: -13px; left: 26px; background: var(--accent); color: var(--accent-fg); font-size: 12px; font-weight: 800; padding: 3px 12px; border-radius: 999px; }
.plan h3 { font-size: 18px; }
.price { margin-top: 12px; display: flex; align-items: baseline; gap: 4px; flex-wrap: wrap; }
.price b { font-size: 34px; font-weight: 900; letter-spacing: -.01em; }
.price span { color: var(--muted); font-size: 14px; }
.plan-desc { margin-top: 6px; color: var(--muted); font-size: 14px; }
.plan ul { list-style: none; padding: 0; margin: 20px 0 26px; display: flex; flex-direction: column; gap: 8px; flex: 1; font-size: 14.5px; color: var(--fg-2); }
.plan li { padding-left: 24px; position: relative; }
.plan li::before { content: ""; position: absolute; left: 2px; top: .55em; width: 12px; height: 7px; border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent); transform: rotate(-45deg); }

/* FAQ */
.faq { margin-top: 36px; display: flex; flex-direction: column; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 52px 18px 20px; font-weight: 700; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 22px; font-weight: 400; color: var(--muted); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 20px 20px; color: var(--fg-2); font-size: 15px; }

/* CTA */
.cta { padding: 88px 0; background: linear-gradient(135deg, #1d4ed8, #1e3a8a); color: #fff; text-align: center; }
@media (prefers-color-scheme: dark) { .cta { background: linear-gradient(135deg, #1e3a8a, #172554); } }
.cta h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 900; }
.cta p { margin-top: 16px; color: #dbeafe; }
.fab-hint { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: #fff; color: #1d4ed8; font-weight: 900; font-size: 14px; vertical-align: -3px; }
.cta .hero-cta { margin-top: 28px; }

/* フッター */
.footer { padding: 28px 0 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13.5px; }
.footer-in { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer nav { display: flex; gap: 18px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--accent); }

/* レスポンシブ */
@media (max-width: 960px) {
  .hero-in, .how { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .hero { padding: 48px 0 64px; }
  .safety, .problem-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav-links { display: none; }
}
@media (max-width: 760px) {
  .features, .steps, .plans, .safety, .problem-grid { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 64px 0; }
  .eyebrow.center + .sec-title { margin-bottom: 32px; }
  .plans { gap: 26px; }
  br.pc { display: none; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  body { font-size: 15px; }
  .lead { font-size: 15.5px; }
  .hero-cta .btn { flex: 1 1 100%; }
  .nav-in { gap: 10px; }
  .link-quiet { display: none; }
  .logo { font-size: 15px; }
  .mock-body { grid-template-columns: minmax(0, 1fr); min-height: 440px; }
  .mock-side { display: none; }
  .mock-chat { left: 12px; right: 12px; width: auto; }
  .feature, .step, .plan { padding: 22px; }
}