:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f1f4f9;
  --text: #0f172a;
  --muted: #5b6577;
  --border: #e3e8f0;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: #eaf1ff;
  --accent-2: #06b6d4;
  --warn-soft: #fff6e5;
  --danger: #dc2626;
  --warn: #d97706;
  --ok: #16a34a;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 16px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, 0.04), 0 16px 40px rgba(37, 99, 235, 0.14);
  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0b1020;
    --surface: #131a2c;
    --surface-2: #182136;
    --text: #e8ecf4;
    --muted: #9aa5b8;
    --border: #243049;
    --accent: #60a5fa;
    --accent-strong: #93c5fd;
    --accent-soft: #15233f;
    --accent-2: #22d3ee;
    --warn-soft: #2d2412;
    --danger: #f87171;
    --warn: #fbbf24;
    --ok: #4ade80;
    --shadow-sm: none;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b1020;
  --surface: #131a2c;
  --surface-2: #182136;
  --text: #e8ecf4;
  --muted: #9aa5b8;
  --border: #243049;
  --accent: #60a5fa;
  --accent-strong: #93c5fd;
  --accent-soft: #15233f;
  --accent-2: #22d3ee;
  --warn-soft: #2d2412;
  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #4ade80;
  --shadow-sm: none;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Noto Sans JP", system-ui, -apple-system, "Hiragino Sans", sans-serif;
  font-feature-settings: "palt";
  line-height: 1.8;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; border-radius: 6px; }

/* ---------- 共通の枠 ---------- */
.site-bar, body > header, main, footer { max-width: 760px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }

.site-bar {
  max-width: none;
  position: sticky;
  top: 0;
  z-index: 10;
  padding-top: 12px;
  padding-bottom: 12px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
}
.site-bar-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; max-width: 720px; margin: 0 auto; }
.site-bar-inner .logo { margin: 0; max-width: none; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 720px;
  margin: 0 auto;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
}
.logo:hover { color: var(--text); }
.logo-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  transition: transform 0.4s var(--ease);
}
.logo:hover .logo-mark { transform: rotate(-8deg) scale(1.06); }
.logo-mark svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; }

body > header { padding-top: 28px; }
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--muted); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }

h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.1rem);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: 0.01em;
  margin: 10px 0 8px;
}
h2 {
  font-size: 1.2rem;
  font-weight: 800;
  margin: 48px 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
main > h2::before, .related h2::before, .features h2::before {
  content: "";
  width: 4px;
  height: 1.1em;
  border-radius: 4px;
  background: linear-gradient(var(--accent), var(--accent-2));
}
h3 { font-size: 1rem; font-weight: 700; margin: 24px 0 4px; }
.lead { color: var(--muted); margin-top: 0; }
p { margin: 0 0 12px; }

/* ---------- カード・フォーム ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}

label { display: block; font-weight: 700; font-size: 0.92rem; margin: 16px 0 6px; }
label:first-child { margin-top: 0; }

input, select, textarea {
  width: 100%;
  font: inherit;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
input:hover, select:hover, textarea:hover { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}
textarea { resize: vertical; }
input[type="date"] { cursor: pointer; }
input[type="range"] { padding: 0; border: 0; background: transparent; box-shadow: none; accent-color: var(--accent); }
input[type="checkbox"] { accent-color: var(--accent); width: 18px; height: 18px; }

label.check { display: flex; align-items: center; gap: 10px; font-weight: 500; margin: 12px 0 0; cursor: pointer; }
label.check:first-child { margin-top: 0; }
label.check input { width: 18px; margin: 0; }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.row label { font-size: 0.85rem; }

button {
  font: inherit;
  font-weight: 700;
  padding: 11px 20px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), opacity 0.2s;
}
button:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35); }
button:active { transform: translateY(0) scale(0.98); }
button:disabled { opacity: 0.5; cursor: default; transform: none; }
button.remove { background: transparent; color: var(--muted); border: 1.5px solid var(--border); box-shadow: none; flex: 0 0 auto; }
button.remove:hover { color: var(--danger); border-color: var(--danger); }
.row > button { flex: 0 0 auto; }

.result {
  background: linear-gradient(135deg, var(--accent-soft), color-mix(in srgb, var(--accent-soft) 60%, var(--surface)));
  border-color: color-mix(in srgb, var(--accent) 20%, transparent);
  animation: pop-in 0.35s var(--ease);
}
.big { font-size: 1.6rem; font-weight: 800; white-space: nowrap; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 8px 0 0; }
.note {
  background: var(--warn-soft);
  border: 1px solid color-mix(in srgb, var(--warn) 25%, transparent);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.9rem;
  margin: 32px 0;
}

@keyframes pop-in {
  from { opacity: 0; transform: translateY(6px) scale(0.99); }
  to { opacity: 1; transform: none; }
}

/* ---------- 表 ---------- */
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 700; font-size: 0.85rem; }
tbody tr { transition: background 0.15s; }
tbody tr:hover { background: var(--surface-2); }
tr.current td { font-weight: 800; color: var(--accent); }
.scroll { overflow-x: auto; border-radius: var(--radius-sm); }
table.compact { font-size: 0.85rem; }
table.compact th, table.compact td { white-space: nowrap; text-align: center; padding: 8px 4px; }
table.compact th:first-child, table.compact td:first-child { text-align: left; }

/* ---------- 各ツール固有 ---------- */
.appliance .head { margin-bottom: 4px; }
.appliance .head input { font-weight: 700; }
.appliance .row label { font-size: 0.85rem; margin-top: 8px; }
.costs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 16px 0 0; }
.costs div { text-align: center; background: var(--surface-2); border-radius: var(--radius-sm); padding: 8px 4px; }
.costs dt { color: var(--muted); font-size: 0.78rem; }
.costs dd { margin: 0; white-space: nowrap; font-weight: 700; font-variant-numeric: tabular-nums; }

.pay { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 0; }
.pay > div { background: var(--surface); border-radius: var(--radius-sm); padding: 12px 14px; }
.pay dt { color: var(--muted); font-size: 0.82rem; }
.pay dd { margin: 0; font-size: 1.35rem; font-weight: 800; white-space: nowrap; font-variant-numeric: tabular-nums; }
.pay .input dd { color: var(--muted); font-weight: 500; }

.generated {
  display: block;
  margin: 20px 0 14px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1.5px dashed color-mix(in srgb, var(--accent) 40%, var(--border));
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  word-break: break-all;
  min-height: 1.8em;
}
.times { margin: 0; display: grid; gap: 8px; }
.times div { background: var(--surface); border-radius: var(--radius-sm); padding: 10px 14px; }
.times dt { color: var(--muted); font-size: 0.82rem; }
.times dd { margin: 0; font-weight: 800; font-size: 1.1rem; }
.warnings, .findings { padding-left: 0; list-style: none; margin: 14px 0 0; }
.warnings li { background: var(--warn-soft); border-radius: var(--radius-sm); padding: 10px 14px; margin: 8px 0; font-size: 0.9rem; }
.level-weak, .verdict.danger { color: var(--danger); }
.level-fair, .verdict.warn { color: var(--warn); }
.level-strong, .level-very-strong, .verdict.ok { color: var(--ok); }
.verdict { font-weight: 800; font-size: 1.15rem; margin-top: 0; }
.domain { word-break: break-all; white-space: normal; }
.finding {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin: 10px 0;
  font-size: 0.9rem;
  animation: pop-in 0.35s var(--ease) both;
}
.finding:nth-child(2) { animation-delay: 0.05s; }
.finding:nth-child(3) { animation-delay: 0.1s; }
.finding:nth-child(4) { animation-delay: 0.15s; }
.finding.danger { border-left-color: var(--danger); }
.finding.warn { border-left-color: var(--warn); }
.finding .tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  margin-right: 8px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
}
.finding.danger .tag { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); }
.finding.warn .tag { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }

/* ---------- 出典・関連ツール ---------- */
.sources { padding-left: 1.2em; font-size: 0.9rem; color: var(--muted); }
.sources li { margin: 4px 0; }
.related { margin-top: 56px; }
.related ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.related li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 40px 12px 16px;
  font-size: 0.88rem;
  color: var(--muted);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
}
.related li::after {
  content: "→";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  transition: transform 0.25s var(--ease);
}
.related li:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.related li:hover::after { transform: translate(4px, -50%); }
.related a { font-weight: 700; text-decoration: none; }
.related a::before { content: ""; position: absolute; inset: 0; }

/* ---------- フッター ---------- */
footer { margin-top: 72px; padding-top: 24px; padding-bottom: 40px; color: var(--muted); font-size: 0.82rem; border-top: 1px solid var(--border); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 6px 20px; padding-top: 8px; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--accent); }

/* ---------- トップページ ---------- */
.hero {
  position: relative;
  max-width: none !important;
  padding: 56px 20px 48px !important;
  margin-bottom: 8px;
  background:
    radial-gradient(600px 300px at 15% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    radial-gradient(500px 280px at 90% 20%, color-mix(in srgb, var(--accent-2) 16%, transparent), transparent 70%);
  overflow: hidden;
}
.hero > * { max-width: 720px; margin-left: auto; margin-right: auto; position: relative; }
.hero h1 {
  font-size: clamp(2rem, 7vw, 3rem);
  line-height: 1.2;
  background: linear-gradient(120deg, var(--text) 30%, var(--accent) 70%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead { font-size: 1.05rem; }
.badges { list-style: none; padding: 0; margin-top: 20px; display: flex; flex-wrap: wrap; gap: 8px; }
.badges li {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px 6px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}
.badges li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }

.category h2 { font-size: 0.8rem; font-weight: 800; letter-spacing: 0.14em; color: var(--muted); margin: 40px 0 14px; }
.tool-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 22px 22px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s;
}
.tool-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease);
}
.tool-card:hover, .tool-card:focus-visible {
  color: var(--text);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}
.tool-card:hover::before, .tool-card:focus-visible::before { transform: scaleX(1); }
.tool-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 6px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  transition: transform 0.35s var(--ease), background 0.35s, color 0.35s;
}
.tool-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tool-card:hover .tool-icon { transform: scale(1.08) rotate(-4deg); background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
.tool-name { font-weight: 800; font-size: 1.08rem; line-height: 1.5; display: flex; align-items: center; gap: 8px; }
.tool-name::after { content: "→"; color: var(--accent); opacity: 0; transform: translateX(-6px); transition: opacity 0.3s, transform 0.3s var(--ease); }
.tool-card:hover .tool-name::after { opacity: 1; transform: none; }
.tool-desc { font-size: 0.9rem; color: var(--muted); line-height: 1.75; }
.tool-when { margin-top: auto; padding-top: 10px; font-size: 0.78rem; color: var(--muted); border-top: 1px dashed var(--border); }

.features dl { margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.features dl div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.features dt { font-weight: 800; margin-bottom: 4px; }
.features dd { margin: 0; color: var(--muted); font-size: 0.88rem; }

/* 404 などの簡易一覧 */
.tools { list-style: none; padding: 0; }
.tools li { margin: 12px 0; }
.tools a { font-weight: 700; }

@media (max-width: 480px) {
  .card { padding: 20px 18px; }
  .tool-grid, .features dl { grid-template-columns: 1fr; }
  .hero { padding: 40px 20px 32px !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- ライト／ダーク切り替え ---------- */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  flex: 0 0 auto;
}
.theme-toggle:hover { transform: rotate(-15deg); box-shadow: var(--shadow); border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .icon-sun { display: block; }
  :root:not([data-theme]) .theme-toggle .icon-moon { display: none; }
}
body, .card, .tool-card, .site-bar, input, select, textarea { transition-property: background-color, border-color, color, transform, box-shadow; }

/* ---------- セキュリティ診断 ---------- */
.scan { text-align: center; padding: 36px 24px 28px; }
.gauge { position: relative; width: 200px; height: 200px; margin: 0 auto 16px; }
.gauge svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.gauge circle { fill: none; stroke-width: 10; }
.gauge-track { stroke: var(--surface-2); }
.gauge-bar {
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-dasharray: calc(var(--p) * 1) 100;
  transition: stroke 0.4s;
}
.done-ok .gauge-bar { stroke: var(--ok); }
.done-warn .gauge-bar { stroke: var(--warn); }
.done-danger .gauge-bar { stroke: var(--danger); }
.gauge-center { position: absolute; inset: 0; display: flex; align-items: baseline; justify-content: center; padding-top: 70px; gap: 4px; }
.gauge-value { font-size: 3.4rem; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.gauge-unit { color: var(--muted); font-weight: 700; }
.scanning .gauge svg { animation: spin 1.1s linear infinite; }
.scanning .gauge-bar { stroke-dasharray: 22 100; }
@keyframes spin { to { transform: rotate(270deg); } }
.scan-status { min-height: 1.8em; color: var(--muted); }
.scan-status .verdict { font-size: 1.2rem; }
.scan-button { font-size: 1.05rem; padding: 14px 36px; margin: 8px 0 4px; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.check-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  animation: pop-in 0.35s var(--ease) both;
}
.check-item:nth-child(2) { animation-delay: 0.08s; }
.check-item:nth-child(3) { animation-delay: 0.16s; }
.check-item:nth-child(4) { animation-delay: 0.24s; }
.check-badge { flex: 0 0 auto; min-width: 48px; text-align: center; font-size: 0.75rem; font-weight: 800; border-radius: 999px; padding: 3px 10px; margin-top: 2px; }
.check-item.ok .check-badge { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.check-item.warn .check-badge { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.check-item.danger .check-badge { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); }
.check-detail { margin: 2px 0 4px; font-size: 0.9rem; }
.check-advice { margin: 0; font-size: 0.85rem; color: var(--muted); }
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; margin: 0; }
.info-grid div { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 14px; }
.info-grid dt { color: var(--muted); font-size: 0.78rem; }
.info-grid dd { margin: 0; font-weight: 700; word-break: break-word; }