:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-2: #202532;
  --text: #f7f2e8;
  --muted: #b8b2a9;
  --accent: #f0a34a;
  --accent-2: #ee6d7a;
  --accent-3: #70c7b7;
  --line: rgba(255,255,255,.11);
  --shadow: 0 18px 55px rgba(0,0,0,.28);
  --radius: 22px;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(238,109,122,.14), transparent 35%),
    radial-gradient(circle at 88% 12%, rgba(112,199,183,.12), transparent 32%),
    var(--bg);
  font-family: Inter, "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}
a { color: inherit; }
img { max-width: 100%; }
button, input, select, textarea { font: inherit; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 999; padding: 10px 14px; background: #fff; color: #111; border-radius: 10px; }
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(15,17,23,.78);
  border-bottom: 1px solid var(--line);
}
.header-inner, .container { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
.header-inner { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-weight: 850; letter-spacing: .02em; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 13px; background: linear-gradient(135deg, var(--accent-2), var(--accent)); box-shadow: 0 10px 25px rgba(238,109,122,.22); }
.nav { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.nav a, .nav button { color: var(--muted); text-decoration: none; border: 0; background: transparent; padding: 8px 11px; border-radius: 10px; cursor: pointer; }
.nav a:hover, .nav a:focus-visible, .nav button:hover, .nav button:focus-visible { background: rgba(255,255,255,.07); color: #fff; outline: none; }
.hero { padding: 72px 0 42px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 34px; align-items: center; }
.eyebrow { color: var(--accent-3); font-size: .83rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.25; margin-top: 0; }
h1 { font-size: clamp(2.35rem, 7vw, 5.6rem); letter-spacing: -.055em; margin-bottom: 20px; }
h2 { font-size: clamp(1.7rem, 4vw, 2.65rem); letter-spacing: -.035em; }
h3 { font-size: 1.2rem; }
.lead { color: var(--muted); font-size: clamp(1rem, 2vw, 1.18rem); max-width: 760px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 45px; padding: 10px 17px; border: 1px solid transparent; border-radius: 14px; text-decoration: none; font-weight: 800; cursor: pointer; transition: transform .15s ease, filter .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); filter: brightness(1.04); }
.btn-primary { color: #1a1210; background: linear-gradient(135deg, var(--accent), #ffd181); }
.btn-secondary { color: #fff; border-color: var(--line); background: rgba(255,255,255,.055); }
.hero-card, .card, .article, .notice, .metric, .tool-panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025));
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}
.hero-card { min-height: 370px; padding: 26px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; position: relative; }
.hero-card::before { content: ""; position: absolute; inset: -20% -30% auto auto; width: 270px; height: 270px; border-radius: 50%; background: rgba(240,163,74,.18); filter: blur(12px); }
.hero-icon { font-size: 5.5rem; position: relative; }
.hero-list { position: relative; display: grid; gap: 11px; }
.hero-list div { display: flex; gap: 10px; color: var(--muted); }
.section { padding: 42px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 20px; }
.section-head p { color: var(--muted); margin: 0; max-width: 620px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card { padding: 22px; }
.card-link { text-decoration: none; transition: transform .16s ease, border-color .16s ease; }
.card-link:hover { transform: translateY(-3px); border-color: rgba(240,163,74,.55); }
.card .icon { font-size: 2.4rem; margin-bottom: 12px; }
.card p { color: var(--muted); margin-bottom: 0; }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: .78rem; font-weight: 800; color: #f9e9cb; border: 1px solid rgba(240,163,74,.35); background: rgba(240,163,74,.1); border-radius: 999px; padding: 4px 9px; }
.metric { padding: 18px; }
.metric strong { display: block; font-size: 1.6rem; }
.metric span { color: var(--muted); font-size: .9rem; }
.notice { padding: 18px 20px; border-left: 4px solid var(--accent-3); color: var(--muted); }
.article { padding: clamp(22px, 4vw, 42px); }
.article p, .article li { color: #d4cec4; }
.article h2 { margin-top: 2.2em; }
.article h3 { margin-top: 1.7em; }
.article code { color: #ffe2a8; background: rgba(255,255,255,.06); padding: 2px 6px; border-radius: 6px; }
.breadcrumbs { padding: 26px 0 0; color: var(--muted); font-size: .9rem; }
.breadcrumbs a { text-decoration: none; }
.ad-slot { display: none; min-height: 100px; border: 1px dashed rgba(255,255,255,.15); border-radius: 16px; align-items: center; justify-content: center; color: var(--muted); margin: 22px 0; }
.site-footer { margin-top: 60px; padding: 34px 0; border-top: 1px solid var(--line); color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start; }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 18px; }
.footer-links a { text-decoration: none; }
.small { font-size: .86rem; color: var(--muted); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-3); box-shadow: 0 0 0 5px rgba(112,199,183,.12); }
.install-banner { display: none; position: fixed; z-index: 60; right: 16px; bottom: 16px; width: min(360px, calc(100% - 32px)); padding: 16px; border-radius: 18px; border: 1px solid var(--line); background: #202532; box-shadow: var(--shadow); }
.install-banner.show { display: block; }
.install-banner p { color: var(--muted); margin: 5px 0 12px; }
.form-row { display: grid; gap: 7px; margin-bottom: 15px; }
label { font-weight: 750; }
input, select, textarea { width: 100%; color: #fff; background: #10131a; border: 1px solid var(--line); border-radius: 12px; padding: 11px 12px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(240,163,74,.12); }
textarea { min-height: 120px; resize: vertical; }
hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
@media (max-width: 860px) {
  .hero-grid, .grid-3 { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
  .hero-card { min-height: 300px; }
  .nav a:nth-child(3), .nav a:nth-child(4) { display: none; }
}
@media (max-width: 650px) {
  .grid-2 { grid-template-columns: 1fr; }
  .header-inner { min-height: 62px; }
  .brand span:last-child { display: none; }
  .section-head, .footer-grid { display: block; }
  .footer-links { margin-top: 16px; }
  .article { border-left: 0; border-right: 0; border-radius: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

.update-notice { display:none; position:fixed; z-index:80; left:50%; bottom:18px; transform:translateX(-50%); width:min(720px,calc(100% - 32px)); padding:16px 18px; gap:18px; align-items:center; justify-content:space-between; border:1px solid rgba(112,199,183,.42); border-radius:18px; background:#202532; box-shadow:var(--shadow); }
.update-notice.show { display:flex; }
.update-notice p { margin:3px 0 0; color:var(--muted); }
.update-notice .actions { margin-top:0; flex-shrink:0; }
.roadmap-meta { display:flex; align-items:center; justify-content:space-between; gap:12px; color:var(--muted); font-size:.84rem; margin-bottom:14px; }
.card ul { color:var(--muted); padding-left:1.25rem; }
button:disabled { opacity:.58; cursor:wait; transform:none!important; }
@media (max-width:650px) { .update-notice { display:none; align-items:stretch; } .update-notice.show { display:block; } .update-notice .actions { margin-top:12px; } }
.dev-status-section { margin-bottom: 32px; }
.dev-status-list { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
.dev-status-item { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; padding: 12px 18px; border-radius: 14px; background: var(--panel-2); border: 1px solid var(--line); font-size: .98rem; }
.dev-status-badge { display: inline-block; min-width: 48px; text-align: center; padding: 3px 10px; border-radius: 8px; background: var(--accent-2); color: #fff; font-weight: 700; font-size: .92rem; margin-right: 6px; }
.dev-status-cat { color: var(--accent-3); font-size: .92rem; margin-right: 8px; }
.dev-status-desc { color: var(--muted); font-size: .93rem; }
@media (max-width: 700px) {
  .dev-status-item { flex-direction: column; align-items: flex-start; gap: 4px; padding: 11px 12px; }
  .dev-status-list { gap: 10px; }
}