:root {
  --bg: #0a0c10;
  --bg-2: #0e1116;
  --panel: #11141a;
  --panel-2: #161a21;
  --line: #1c2027;
  --line-2: #262b34;
  --text: #ecf0f5;
  --text-2: #c8cfd8;
  --muted: #7a8493;
  --dim: #555e6b;
  --accent: #34d399;
  --accent-soft: #a7f3d0;
  --accent-2: #60a5fa;
  --red: #f87171;
  --amber: #fbbf24;
  --warn-tint: rgba(251,191,36,.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, system-ui, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
:lang(ja) { line-height: 1.7; letter-spacing: 0; }
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3, :lang(ja) h4 { letter-spacing: -0.01em; }
:lang(ja) h1 { line-height: 1.18; }
:lang(ja) h2 { line-height: 1.25; }
:lang(ja) .lede, :lang(ja) .section-lede, :lang(ja) .principles p, :lang(ja) .stage p,
:lang(ja) .ad-text, :lang(ja) .access-copy p, :lang(ja) .bigline p { line-height: 1.75; }
:lang(ja) .overline { letter-spacing: .08em; }
body { overflow-x: hidden; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); }
.mono, code { font-family: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, monospace; font-size: 0.9em; color: var(--text-2); }
.dim { color: var(--dim); }
em { font-style: italic; color: var(--muted); font-weight: 400; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ─── Nav ─── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,12,16,.78);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 40px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 32px;
  align-items: center;
}

.brand {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--text);
}
.brand:hover { color: var(--text); opacity: .9; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(52,211,153,.15), rgba(96,165,250,.10));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.05);
}
.brand.small .brand-mark { width: 22px; height: 22px; }
.brand-mark svg { display: block; }
.brand-name { font-weight: 650; font-size: 15px; letter-spacing: -0.01em; }
.brand-tld {
  background: linear-gradient(90deg, var(--accent-soft), var(--accent) 50%, var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-weight: 700;
}

.nav-links {
  display: flex; gap: 28px; justify-self: center;
}
.nav-links a {
  color: var(--muted); font-size: 13.5px; font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover { color: var(--text); }

.nav-meta { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  overflow: hidden;
}
.lang-toggle button {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .08em;
  padding: 6px 9px;
  cursor: pointer;
  transition: color .15s, background .15s;
}
.lang-toggle button + button { border-left: 1px solid var(--line-2); }
.lang-toggle button:hover { color: var(--text); }
.lang-toggle button.active {
  background: rgba(52,211,153,.14);
  color: var(--accent);
}
.build {
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--dim);
}
.btn-primary, .btn-secondary, .nav-cta {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: inherit; font-size: 13.5px; font-weight: 600;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s, background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #06231a;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-soft); color: #06231a; }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--line-2);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent-soft); }
.btn-primary .arr, .btn-secondary .arr { transition: transform .15s; }
.btn-primary:hover .arr, .btn-secondary:hover .arr { transform: translateX(2px); }

/* ─── Type primitives ─── */
.overline {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
h1, h2, h3, h4 {
  font-weight: 650;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--text);
}
h1 {
  font-size: clamp(36px, 4.6vw, 56px);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 600;
  text-wrap: balance;
}
h2 {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.12;
}
h3 { font-size: 19px; line-height: 1.3; }
h4 { font-size: 16px; line-height: 1.3; }

.section { padding: 110px 0; border-top: 1px solid var(--line); }
.section.dark { background: var(--bg-2); }
.section-head { max-width: 720px; margin-bottom: 60px; }
.section-lede {
  font-size: 17px;
  color: var(--text-2);
  margin: 14px 0 0;
  max-width: 640px;
}

/* ─── Hero ─── */
.hero { padding: 90px 0 110px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: start;
}
.hero-copy h1 { margin-bottom: 26px; }
.lede {
  font-size: 17.5px;
  line-height: 1.6;
  color: var(--text-2);
  margin: 0 0 32px;
  max-width: 580px;
  text-wrap: pretty;
}
.hero-actions {
  display: flex; gap: 12px; align-items: center;
  margin-bottom: 48px;
}
.hero-actions .btn-primary { padding: 11px 18px; font-size: 14px; }
.hero-actions .btn-secondary { padding: 11px 16px; font-size: 14px; }

.hero-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  max-width: 540px;
}
.hero-meta > div { display: flex; flex-direction: column; gap: 4px; }
.meta-k {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
}
.meta-v { font-size: 13.5px; color: var(--text-2); }

/* ─── Intercept artifact (hero right) ─── */
.intercept {
  background: #06080b;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,.6), inset 0 0 0 1px rgba(255,255,255,.015);
}
.intercept-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.015);
}
.intercept-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}
.intercept-meta {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--dim);
}
.intercept-body {
  margin: 0;
  padding: 18px 20px 22px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
}
.intercept-body .m { color: var(--accent); }
.intercept-body .src { color: var(--accent-2); }
.intercept-body .ar { color: var(--dim); }
.intercept-body .srv { color: var(--text); }
.intercept-body .str { color: #fbbf24; }
.intercept-body .dim { color: var(--dim); }
.intercept-body .rule { color: var(--accent); }
.intercept-body .block {
  color: var(--red);
  font-weight: 600;
}
.intercept-body .warn-bg {
  display: inline-block;
  background: var(--warn-tint);
  padding: 0 4px;
  border-left: 2px solid var(--amber);
  margin: 2px 0;
  color: #fed7aa;
}

/* ─── Bigline (single sharp stat block) ─── */
.bigline {
  padding: 80px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
}
.bigline p {
  font-size: clamp(24px, 2.8vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 24px;
  max-width: 860px;
  font-weight: 500;
}
.bigline-meta {
  font-size: 14.5px;
  color: var(--muted);
  max-width: 720px;
  line-height: 1.65;
}

/* ─── Stages ─── */
.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.stage {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,.012), transparent);
}
.stage-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 14px;
}
.stage h3 { margin-bottom: 10px; }
.stage p {
  font-size: 14.5px;
  color: var(--muted);
  margin: 0 0 20px;
  line-height: 1.6;
}
.snippet {
  margin: 0;
  padding: 14px 16px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-2);
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre;
}
.snippet .prompt { color: var(--accent); }
.snippet .dim { color: var(--dim); }
.snippet .str { color: #fbbf24; }

/* ─── Alert detail (intercept showcase) ─── */
.alert-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  align-items: start;
}
.alert-detail {
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: var(--panel);
  padding: 28px 30px;
}
.ad-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.ad-rule {
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 6px;
}
.ad-where { color: var(--muted); font-size: 13.5px; }
.ad-where .dot { color: var(--dim); margin: 0 6px; }
.sev {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .1em;
  padding: 4px 9px;
  border-radius: 4px;
  white-space: nowrap;
}
.sev.high { background: rgba(248,113,113,.12); color: var(--red); border: 1px solid rgba(248,113,113,.25); }

.ad-block { margin-bottom: 22px; }
.ad-block:last-child { margin-bottom: 0; }
.ad-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 10px;
}
.ad-block pre {
  margin: 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  line-height: 1.7;
  color: #fed7aa;
  background: var(--warn-tint);
  border-left: 2px solid var(--amber);
  padding: 12px 14px;
  border-radius: 0 6px 6px 0;
  overflow-x: auto;
  white-space: pre-wrap;
}
.ad-text {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-2);
  line-height: 1.6;
}

.alert-feed {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-2);
  padding: 18px 0 8px;
}
.af-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 20px 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.af-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
}
.af-count { font-size: 12px; color: var(--muted); }
.alert-feed ul { list-style: none; margin: 0; padding: 0; }
.af-item {
  display: grid;
  grid-template-columns: 50px 1fr auto;
  grid-template-rows: auto auto;
  gap: 2px 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
}
.af-item:last-child { border-bottom: 0; }
.af-sev {
  grid-row: span 2;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px; letter-spacing: .08em;
  font-weight: 700;
  align-self: center;
  text-align: center;
  padding: 3px 0;
  border-radius: 3px;
}
.af-item.high .af-sev { color: var(--red); background: rgba(248,113,113,.1); }
.af-item.med  .af-sev { color: var(--amber); background: rgba(251,191,36,.1); }
.af-item.low  .af-sev { color: var(--accent-2); background: rgba(96,165,250,.1); }
.af-rule {
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--text);
}
.af-where { font-size: 12px; color: var(--muted); }
.af-time {
  grid-row: span 2;
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--dim);
  align-self: center;
}

/* ─── Coverage table ─── */
.coverage {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.coverage thead th {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
  text-align: left;
  font-weight: 500;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-2);
}
.coverage tbody td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.coverage tbody tr:hover { background: rgba(255,255,255,.012); }
.coverage td:first-child { font-weight: 500; color: var(--text); }
.coverage td:nth-child(2) {
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--muted);
}
.status {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .06em;
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid var(--line-2);
}
.status.ok { color: var(--accent); border-color: rgba(52,211,153,.3); background: rgba(52,211,153,.08); }
.status.beta { color: var(--muted); }
.coverage-foot {
  margin-top: 20px;
  font-size: 13.5px;
  color: var(--muted);
}

/* ─── Principles ─── */
.principles {
  list-style: none;
  counter-reset: principle;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.principles li {
  counter-increment: principle;
  display: grid;
  grid-template-columns: 80px 1fr;
  column-gap: 32px;
  row-gap: 8px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.principles li:last-child { border-bottom: 1px solid var(--line); }
.principles li::before {
  content: "0" counter(principle);
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: .08em;
  align-self: start;
  padding-top: 4px;
}
.principles h4 { grid-column: 2; }
.principles p  { grid-column: 2; }
.principles h4 { margin-bottom: 8px; font-weight: 600; }
.principles p {
  margin: 0;
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.65;
  max-width: 720px;
}

/* ─── Access ─── */
.access { padding: 110px 0; border-top: 1px solid var(--line); background: var(--bg-2); }
.access-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.access-copy h2 { margin-bottom: 18px; }
.access-copy p {
  font-size: 15.5px;
  color: var(--text-2);
  margin: 0 0 14px;
  line-height: 1.6;
  max-width: 460px;
}
.access-foot { color: var(--muted); font-size: 14px; }

.access-form {
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 28px 28px 24px;
  display: flex; flex-direction: column; gap: 18px;
}
.access-form label {
  display: flex; flex-direction: column; gap: 8px;
}
.access-form label > span {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
}
.access-form input,
.access-form textarea {
  background: var(--bg);
  border: 1px solid var(--line-2);
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
  padding: 11px 13px;
  border-radius: 6px;
  outline: none;
  resize: vertical;
  transition: border-color .15s, background .15s;
}
.access-form input:focus,
.access-form textarea:focus {
  border-color: var(--accent);
  background: rgba(52,211,153,.04);
}
.access-form input::placeholder,
.access-form textarea::placeholder { color: var(--dim); }
.access-form button {
  align-self: flex-start;
  background: var(--accent);
  color: #06231a;
  font-family: inherit;
  font-weight: 650;
  font-size: 14px;
  padding: 11px 18px;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s, transform .15s;
}
.access-form button:hover { background: var(--accent-soft); }
.access-form button .arr { transition: transform .15s; }
.access-form button:hover .arr { transform: translateX(2px); }
.form-footnote {
  font-size: 12.5px;
  color: var(--dim);
}
/* Honeypot — hide off-screen but keep submittable for bots that fill all fields. */
.hp-field {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* ─── Footer ─── */
.footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  gap: 48px;
  align-items: start;
}
.footer-tag { color: var(--muted); font-size: 13.5px; margin-top: 12px; max-width: 280px; }
.footer-cols {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 48px;
}
.footer-h {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 14px;
}
.footer-cols a {
  display: block;
  color: var(--muted);
  font-size: 13.5px;
  padding: 4px 0;
}
.footer-cols a:hover { color: var(--text); }
.footer-meta {
  text-align: right;
  font-size: 12.5px;
  color: var(--dim);
  font-family: "JetBrains Mono", monospace;
  display: flex; flex-direction: column; gap: 4px;
}
.footer-parent {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.footer-parent a {
  color: var(--text-2);
  font-weight: 500;
  border-bottom: 1px dotted var(--line-2);
}
.footer-parent a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .alert-row { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: 1fr; gap: 16px; }
  .access-inner { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; text-align: left; }
  .footer-meta { text-align: left; }
  .section { padding: 80px 0; }
  .hero { padding: 60px 0 70px; }
}
@media (max-width: 640px) {
  .container, .nav-inner { padding: 0 24px; }
  .nav-meta .build { display: none; }
  .hero-meta { grid-template-columns: 1fr; gap: 18px; }
  .principles li { grid-template-columns: 1fr; gap: 8px; }
  .principles li::before { padding-top: 0; }
  .coverage { font-size: 13px; }
  .coverage thead th, .coverage tbody td { padding: 10px 8px; }
  .coverage td:nth-child(3) { display: none; }
  .footer-cols { grid-template-columns: 1fr; gap: 24px; }
}