/* TF-AI Code Security ランディングページ(LP)専用スタイル */
:root {
  --bg: #0E1B2E; --band: #122338; --card: #16263E; --fg: #EAF1F7; --muted: #9FB2C5;
  --line: #2E4358; --accent: #2FA38E; --accent-strong: #69C4B0; --on-accent: #06251F;
  --diff-red: #E58F86;
}
html { scroll-behavior: smooth; }
body.lp { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.8 "Hiragino Sans", "Noto Sans JP", "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent-strong); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; background: var(--bg); padding: 8px 12px; z-index: 10; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.top { position: sticky; top: 0; z-index: 5; background: rgba(14, 27, 46, .92);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--fg); font-weight: 800; font-size: 19px; }
.brand img { width: 34px; height: 34px; }
.links { display: flex; gap: 20px; margin-right: auto; }
.links a { color: var(--fg); text-decoration: none; font-size: 15px; }
.links a:hover { color: var(--accent-strong); }
.actions { display: flex; align-items: center; gap: 12px; }
.lang select { font: inherit; font-size: 14px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--fg); min-height: 40px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px;
  border-radius: 999px; font-weight: 700; text-decoration: none; font-size: 15px; border: 2px solid transparent; }
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-strong); }
.btn.ghost { border-color: var(--accent); color: var(--accent-strong); }
.btn.big { min-height: 56px; padding: 0 28px; font-size: 17px; }
.btn:focus-visible, a:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

section { padding: 72px 0; }
.band { background: var(--band); }
h1, h2, h3 { text-wrap: pretty; }
h1 { font-size: clamp(30px, 4.4vw, 48px); line-height: 1.3; margin: 8px 0 16px; letter-spacing: .01em; }
h2 { font-size: clamp(24px, 3vw, 32px); line-height: 1.4; margin: 0 0 28px; }
h3 { font-size: 19px; margin: 0 0 12px; line-height: 1.5; }
.eyebrow { color: var(--accent-strong); font-weight: 700; margin: 0; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.note { color: var(--muted); font-size: 15px; }

.hero { padding-top: 56px; background: linear-gradient(160deg, #0b1626, var(--bg) 55%, #0f2b27 130%); }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.stats { list-style: none; display: flex; gap: 32px; margin: 36px 0 0; padding: 0; }
.stats strong { display: block; font-size: 30px; color: var(--accent-strong); line-height: 1.1; }
.stats span { color: var(--muted); font-size: 14px; }

/* 製品モチーフ: 検出→AI修正→検証合格の diff カード */
.hero-art { display: grid; place-items: center; }
.diff-card { width: min(430px, 100%); background: #0A1523; border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; font: 13px/2 "SF Mono", ui-monospace, "Courier New", monospace;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45); }
.diff-card .fn { color: #5E7A94; display: block; border-bottom: 1px solid #1C3040; padding-bottom: 8px; margin-bottom: 8px; }
.diff-card .ctx { color: #7E93A8; display: block; white-space: pre; }
.diff-card .del { color: var(--diff-red); display: block; white-space: pre; background: rgba(90, 30, 25, .25); }
.diff-card .add { color: var(--accent-strong); display: block; white-space: pre; background: rgba(14, 124, 107, .18); }
.diff-card .verdict { display: inline-block; margin-top: 12px; border: 1px solid var(--accent); color: var(--accent-strong);
  font-size: 11px; letter-spacing: .08em; padding: 2px 12px; border-radius: 999px; font-family: inherit; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 24px; }
.card ul { margin: 0; padding-left: 1.2em; color: var(--muted); }
.card li { margin-bottom: 8px; }
.card p { margin: 0; color: var(--muted); }

.how-grid { display: grid; grid-template-columns: 1fr .8fr; gap: 56px; align-items: center; }
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; }
.steps li { counter-increment: s; position: relative; padding: 0 0 20px 56px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 2px; width: 38px; height: 38px; border-radius: 50%;
  background: var(--accent); color: var(--on-accent); font-weight: 800; display: grid; place-items: center; }
.steps strong { display: block; font-size: 18px; }
.steps span { color: var(--muted); }
.flow-card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 32px; }
.flow-title { font-size: 20px; font-weight: 800; color: var(--accent-strong); margin: 0 0 12px; }

.price-card { max-width: 560px; margin: 0 auto; background: var(--card); border: 1px solid var(--accent); border-radius: 16px;
  padding: 36px 32px; text-align: center; }
.price-card .price { font-size: 56px; font-weight: 800; color: var(--accent-strong); line-height: 1.1; margin: 0 0 8px; }
.price-card p { color: var(--muted); margin: 0 0 6px; }

.final { text-align: center; }
.final h2 { margin-bottom: 20px; }
.final .cta { justify-content: center; }

.foot { border-top: 1px solid var(--line); padding: 32px 0 40px; text-align: center; color: var(--muted); font-size: 14px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: center; margin-bottom: 12px; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { text-decoration: underline; }
.foot p { margin: 4px 0; }
.foot a.copy { color: inherit; }

@media (max-width: 900px) {
  .links { display: none; }
  .bar { justify-content: space-between; }
  .hero-grid, .how-grid { grid-template-columns: 1fr; gap: 32px; }
  .cards { grid-template-columns: 1fr; }
  section { padding: 52px 0; }
}
@media (max-width: 420px) {
  .wrap { padding: 0 16px; }
  .brand span { display: none; }
  .btn.big { width: 100%; }
  .stats { gap: 20px; }
  .diff-card { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }