:root {
  --bg: #05070c;
  --bg-soft: #0a0e17;
  --card: rgba(16, 21, 34, 0.72);
  --card-solid: #0f1522;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.26);
  --tx: #e6ebf4;
  --tx-dim: #97a3b6;
  --tx-faint: #647089;
  --acc: #8ab4ff;
  --acc-2: #c4b5fd;
  --acc-3: #6ee7d8;
  --hover: rgba(255, 255, 255, 0.06);
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.55);
  --radius: 14px;
  --wrap: 1080px;
}

html[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-soft: #ffffff;
  --card: rgba(255, 255, 255, 0.82);
  --card-solid: #ffffff;
  --line: rgba(30, 41, 59, 0.12);
  --line-strong: rgba(30, 41, 59, 0.24);
  --tx: #111827;
  --tx-dim: #4b5563;
  --tx-faint: #8b94a5;
  --acc: #2563eb;
  --acc-2: #7c3aed;
  --acc-3: #0d9488;
  --hover: rgba(30, 41, 59, 0.06);
  --shadow: 0 10px 40px -12px rgba(30, 41, 59, 0.18);
  --glass: rgba(255, 255, 255, 0.86);
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: "Noto Sans JP", "Inter", -apple-system, "Segoe UI", Meiryo, sans-serif;
  color: var(--tx);
  background: var(--bg);
  overflow-x: hidden;
  line-height: 1.75;
  transition: background 0.4s ease, color 0.4s ease;
}

html[lang="en"] body { font-family: "Inter", "Noto Sans JP", -apple-system, "Segoe UI", Meiryo, sans-serif; }
html[lang="zh"] body { font-family: "Noto Sans SC", "Noto Sans JP", "Inter", -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; }

::selection { background: color-mix(in srgb, var(--acc) 40%, transparent); }

a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

.link {
  color: var(--acc);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: color-mix(in srgb, var(--acc) 45%, transparent);
  transition: text-decoration-color 0.2s;
}
.link:hover { text-decoration-color: var(--acc); }

code {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.88em;
  background: var(--hover);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1em 0.4em;
  white-space: nowrap;
}

main { position: relative; z-index: 1; }

.sec-head { text-align: center; margin: 0 auto 48px; max-width: 720px; }
.sec-head h2 { font-size: clamp(26px, 4.5vw, 38px); margin: 10px 0 12px; letter-spacing: -0.02em; }
.sec-head p { color: var(--tx-dim); margin: 0; }
.sec-head em { font-style: normal; color: var(--acc); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 4px; }

.sec-tag {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--acc);
  background: color-mix(in srgb, var(--acc) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--acc) 28%, transparent);
  border-radius: 999px;
  padding: 5px 14px;
}

section { padding: 96px 24px; position: relative; }
@media (max-width: 720px) { section { padding: 72px 16px; } }

.bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.34;
  transition: opacity 0.5s, background 0.5s;
}
html[data-theme="dark"] .glow-a { background: radial-gradient(circle, #2b55a8 0%, transparent 70%); }
html[data-theme="light"] .glow-a { background: radial-gradient(circle, #bcd3ff 0%, transparent 70%); }
html[data-theme="dark"] .glow-b { background: radial-gradient(circle, #5d3fa8 0%, transparent 70%); }
html[data-theme="light"] .glow-b { background: radial-gradient(circle, #e3d9ff 0%, transparent 70%); }

.glow-a { width: 720px; height: 720px; top: -260px; right: -120px; }
.glow-b { width: 640px; height: 640px; top: 42%; left: -220px; }

.dev-badge {
  position: fixed;
  top: 66px;
  right: 14px;
  z-index: 900;
  display: none;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--acc);
  border: 1px dashed color-mix(in srgb, var(--acc) 50%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(8px);
  padding: 5px 12px;
}
.dev-badge.show { display: block; animation: badgePulse 2.4s ease-in-out infinite; }
@keyframes badgePulse { 50% { opacity: 0.55; } }

.theme-toggle {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 800;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, border-color 0.3s;
}
.theme-toggle:hover { transform: translateY(-2px); border-color: var(--line-strong); }
.theme-toggle svg { width: 20px; height: 20px; position: absolute; transition: opacity 0.35s, transform 0.45s; }
.icon-moon { opacity: 1; transform: rotate(0); }
.icon-sun { opacity: 0; transform: rotate(90deg) scale(0.6); }
html[data-theme="light"] .icon-moon { opacity: 0; transform: rotate(-90deg) scale(0.6); }
html[data-theme="light"] .icon-sun { opacity: 1; transform: rotate(0) scale(1); }

.cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 5;
  opacity: 0;
  transition: opacity 0.4s;
  will-change: transform;
}
@media (min-width: 1080px) and (pointer: fine) {
  .cursor {
    opacity: 0.12;
    background: radial-gradient(circle, var(--acc) 0%, transparent 62%);
  }
  .cursor.lit { opacity: 0.24; }
  html[data-theme="light"] .cursor { mix-blend-mode: multiply; }
}

.site-head {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 700;
  transition: transform 0.4s ease;
}
.site-head.hidden { transform: translateY(-110%); }

.nav {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.02em; }
.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: var(--acc);
}
.brand-mark svg, .brand-mark img { width: 100%; height: 100%; }
.brand-mark img { display: block; }
.brand-mark img.mark-a { transform-origin: 50% 50%; }
.brand-mark .mark-a { animation: markTilt 6s ease-in-out infinite; transform-origin: 16px 16px; }
@keyframes markTilt { 50% { transform: rotate(14deg); } }
html[data-theme="light"] .mark-a,
html[data-theme="light"] .mark-ring { animation: none; }

.nav-links { display: flex; gap: 26px; }
.nav-links a {
  font-size: 14px;
  color: var(--tx-dim);
  transition: color 0.25s;
  position: relative;
}
.nav-links a:hover { color: var(--tx); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 2px;
  background: var(--acc);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.nav-links a:hover::after { transform: scaleX(1); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

.lang-select {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--tx-dim);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 7px 10px;
  cursor: pointer;
  outline: none;
  transition: color 0.25s, border-color 0.25s;
}
.lang-select:hover { color: var(--tx); border-color: var(--line-strong); }
.lang-select option { color: var(--tx); background: var(--card-solid); }

@media (max-width: 640px) {
  .nav-links a:nth-child(4),
  .nav-links a:nth-child(5) { display: none; }
  .nav-right { gap: 14px; }
}

.hero { padding-top: 190px; padding-bottom: 120px; text-align: center; }

.hero-kicker {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--tx-dim);
  border: 1px solid var(--line);
  background: var(--card);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 8px 18px;
  margin: 0 0 26px;
}

.hero h1 {
  font-size: clamp(40px, 7vw, 74px);
  line-height: 1.22;
  letter-spacing: -0.03em;
  margin: 0 0 26px;
  font-weight: 800;
}

.grad {
  background: linear-gradient(100deg, var(--acc) 0%, var(--acc-2) 55%, var(--acc-3) 110%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lead { color: var(--tx-dim); font-size: clamp(15px, 2vw, 17px); margin: 0 0 34px; }
.hero .lead strong { color: var(--tx); font-weight: 700; }

.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 54px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.3s, border-color 0.3s;
}
.btn svg { width: 17px; height: 17px; }
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--acc);
  color: #fff;
  box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--acc) 60%, transparent);
}
html[data-theme="light"] .btn-primary { color: #fff; }
.btn-primary:hover { box-shadow: 0 14px 32px -8px color-mix(in srgb, var(--acc) 65%, transparent); }

.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--tx);
  background: var(--card);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: var(--hover); }

.btn-lg { padding: 15px 30px; font-size: 16px; }

.hero-stats {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: clamp(24px, 6vw, 72px);
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}
.hero-stats li { text-align: center; }
.hero-stats strong {
  display: block;
  font-family: "JetBrains Mono", "Inter", monospace;
  font-size: 30px;
  font-weight: 700;
  background: linear-gradient(100deg, var(--acc), var(--acc-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}
.hero-stats span { font-size: 12.5px; color: var(--tx-faint); display: block; margin-top: 2px; }

.scroll-hint {
  margin: 64px auto 0;
  width: 22px;
  height: 30px;
  color: var(--tx-faint);
  animation: bob 2.2s ease-in-out infinite;
}
.scroll-hint svg { width: 100%; height: 100%; }
@keyframes bob { 50% { transform: translateY(9px); } }

.sp-only { display: none; }
@media (max-width: 640px) { .sp-only { display: inline; } }

.demo { position: relative; }

.desk-wrap { position: relative; max-width: 880px; margin: 0 auto; }

.desk {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  overflow: hidden;
  min-height: 380px;
  display: flex;
  flex-direction: column;
}

.desk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 40%, transparent);
}
.desk-bar h3 { margin: 0; font-size: 13.5px; font-weight: 600; color: var(--tx-dim); }

.desk-nav { display: flex; gap: 4px; }
.desk-nav span {
  width: 26px; height: 24px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--tx-faint);
  font-size: 12px;
  user-select: none;
}
.desk-nav .nav-up {
  border: none;
  transform: rotate(90deg);
  font-size: 13px;
}

.desk-icons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 6px;
  padding: 20px 16px 30px;
  align-items: start;
}

.icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 12px 6px 10px;
  border-radius: 8px;
  text-align: center;
  transition: background 0.15s, outline 0.15s;
  position: relative;
}
.icon .nm {
  font-size: 11.5px;
  color: var(--tx-dim);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-all;
  line-height: 1.4;
  padding: 1px 4px;
  border-radius: 3px;
}
.icon.selected { background: color-mix(in srgb, var(--acc) 16%, transparent); }
.icon.selected .nm { background: color-mix(in srgb, var(--acc) 22%, transparent); color: var(--tx); }

.ic {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  font-size: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 6px 18px -8px rgba(0, 0, 0, 0.6);
  transition: transform 0.18s;
}
.icon:hover .ic { transform: translateY(-2px); }
.icon:hover .nm { color: var(--tx); }

.ic svg { width: 28px; height: 28px; }

.ic-video  { background: linear-gradient(135deg, #6d4aff, #9f6bff); color: #fff; }
.ic-image  { background: linear-gradient(135deg, #0ea5e9, #38bdf8); color: #fff; }
.ic-pdf    { background: linear-gradient(135deg, #dc2626, #f87171); color: #fff; }
.ic-zip    { background: linear-gradient(135deg, #d97706, #fbbf24); color: #fff; }
.ic-folder { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #fff; }
.ic-warn   { background: linear-gradient(135deg, #475569, #64748b); color: #fff; }
.ic-fail   { background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff; }
.ic-ok     { background: linear-gradient(135deg, #059669, #34d399); color: #fff; }

html[data-theme="light"] .ic { box-shadow: 0 6px 14px -8px rgba(30, 41, 59, 0.45); }

.desk-tip { padding: 0 18px 18px; margin: 0; text-align: center; font-size: 12px; color: var(--tx-faint); }

.ctx {
  position: fixed;
  z-index: 1100;
  width: 250px;
  opacity: 0;
  transform: scale(0.96) translateY(-4px);
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.14s ease, transform 0.14s ease, visibility 0.14s;
  transform-origin: top left;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 24px 70px -12px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
  backdrop-filter: blur(22px) saturate(1.5);
  -webkit-backdrop-filter: blur(22px) saturate(1.5);
  overflow: hidden;
}
html[data-theme="light"] .ctx { box-shadow: 0 24px 60px -12px rgba(30, 41, 59, 0.28); }
.ctx.open { opacity: 1; transform: scale(1) translateY(0); pointer-events: auto; visibility: visible; }

.ctx > .ctx-f {
  height: 3px;
  background: linear-gradient(90deg, var(--acc), var(--acc-2));
  flex: none;
}

.ctx-body { padding: 5px; max-height: calc(100vh - 220px); overflow-y: auto; }

.ctx-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  font-size: 13px;
  border-radius: 7px;
  color: var(--tx);
  transition: background 0.1s, color 0.1s;
  white-space: nowrap;
}
.ctx-item:hover { background: color-mix(in srgb, var(--acc) 22%, transparent); color: var(--tx); }
.ctx-item .ct-ic { width: 14px; height: 14px; color: var(--tx-dim); flex: none; }
.ctx-item:hover .ct-ic { color: var(--acc); }
.ctx-item .ct-ic svg { width: 100%; height: 100%; }
.ctx-item .ct-lbl { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.ctx-item .ct-sub { color: var(--tx-faint); font-size: 10.5px; font-family: "JetBrains Mono", monospace; }

.ctx-h {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px 6px;
  color: var(--tx-dim);
}
.ctx-h .ctx-f {
  width: 16px; height: 16px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--acc), var(--acc-2));
}
.ctx-h .n { font-size: 12px; font-weight: 600; }
.ctx-h .t { font-size: 10.5px; color: var(--tx-faint); font-family: "JetBrains Mono", monospace; margin-left: auto; }

.ctx-sep { height: 1px; margin: 4px 8px; background: var(--line); }

.scan-overlay {
  position: absolute;
  inset: 0;
  z-index: 150;
  display: none;
  place-items: center;
  background: color-mix(in srgb, var(--bg) 46%, transparent);
  backdrop-filter: blur(6px);
  border-radius: var(--radius);
}
.scan-overlay.open { display: grid; }

.scan-card {
  width: min(420px, 86%);
  background: var(--card-solid);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 28px;
  text-align: center;
}
.scan-icon { width: 46px; height: 46px; margin: 0 auto 14px; color: var(--acc); animation: breathe 1.8s ease-in-out infinite; }
.scan-icon svg { width: 100%; height: 100%; }
@keyframes breathe { 50% { transform: scale(1.12); } }

.scan-title { font-weight: 800; font-size: 16px; }
.scan-desc { font-size: 12.5px; color: var(--tx-dim); min-height: 20px; margin-top: 3px; }

.scan-track {
  height: 7px;
  background: var(--hover);
  border-radius: 99px;
  overflow: hidden;
  margin: 16px 0 10px;
  border: 1px solid var(--line);
}
.scan-bar {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--acc), var(--acc-2), var(--acc-3));
  background-size: 200% 100%;
  animation: slideHue 1.6s linear infinite;
  transition: width 0.25s ease;
}
@keyframes slideHue { to { background-position: -200% 0; } }

.scan-msg { font-size: 11px; color: var(--tx-faint); }

.rename-bubble {
  position: fixed;
  z-index: 1250;
  background: var(--card-solid);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rename-bubble input {
  font: inherit;
  font-size: 12px;
  color: var(--tx);
  background: var(--bg-soft);
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  padding: 6px 9px;
  width: 200px;
  outline: none;
}
.rename-bubble input:focus { border-color: var(--acc); }
.rename-bubble button {
  font-size: 15px;
  color: var(--tx-dim);
  padding: 4px 6px;
  border-radius: 6px;
  line-height: 1;
}
.rename-bubble button:hover { color: var(--tx); background: var(--hover); }
.rename-backdrop { position: absolute; inset: 0; z-index: 110; display: none; }
.rename-backdrop.show { display: block; }

.philo { text-align: center; padding-top: 40px; padding-bottom: 40px; }
.philo-line {
  font-size: clamp(21px, 3.6vw, 32px);
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 18px;
}
.philo-line em { font-style: normal; color: var(--acc); }
.philo-sub { color: var(--tx-dim); max-width: 660px; margin: 0 auto; font-size: 14.5px; }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1060px;
  margin: 0 auto;
}
@media (max-width: 860px) { .pillars { grid-template-columns: 1fr; } }

.pillar {
  background: linear-gradient(180deg, var(--card), color-mix(in srgb, var(--card) 55%, transparent));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.25s, border-color 0.25s;
}
.pillar:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--acc) 40%, var(--line)); }

.p-ic { width: 30px; height: 30px; color: var(--acc); margin-bottom: 14px; }
.pillar h3 { margin: 0 0 8px; font-size: 17px; }
.pillar p { margin: 0; font-size: 13.5px; color: var(--tx-dim); }
.pillar strong { color: var(--tx); }

.features { max-width: 1060px; margin: 0 auto; }

.feat-row {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 44px;
  align-items: center;
  margin-bottom: 84px;
}
.feat-row.flip { grid-template-columns: 0.95fr 1.05fr; }
.feat-row.flip .feat-shot { order: -1; }

@media (max-width: 860px) {
  .feat-row, .feat-row.flip { grid-template-columns: 1fr; gap: 28px; }
  .feat-row.flip .feat-shot { order: 0; }
}

.feat-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--acc);
  border: 1px solid color-mix(in srgb, var(--acc) 30%, transparent);
  border-radius: 999px;
  padding: 5px 13px;
  margin-bottom: 14px;
}

.feat-copy h3 { font-size: clamp(20px, 3vw, 26px); margin: 0 0 16px; letter-spacing: -0.01em; }

.feat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.feat-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--tx-dim);
}
.feat-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--acc), var(--acc-2));
  transform: rotate(45deg);
}
.feat-list strong { color: var(--tx); font-weight: 700; }

.feat-shot { margin: 0; }
.feat-shot .shot, .gal-item .shot {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
  transition: transform 0.25s, border-color 0.25s;
}
.shot:empty {
  display: grid;
  place-items: center;
  background:
    repeating-linear-gradient(45deg,
      color-mix(in srgb, var(--acc) 3%, transparent) 0 12px,
      transparent 12px 24px),
    var(--card);
}
.shot:empty::after {
  content: "画像を挿入予定";
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--tx-faint);
  border: 1px dashed var(--line-strong);
  border-radius: 999px;
  padding: 8px 18px;
}
.feat-row:hover .shot, .gal-item:hover .shot { transform: translateY(-3px); border-color: color-mix(in srgb, var(--acc) 35%, var(--line)); }
.shot.tall { aspect-ratio: 16 / 16; }

.feat-shot figcaption, .gal-item figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--tx-faint);
  text-align: center;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-height: 340px;
  overflow-y: auto;
}
.conv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  background: var(--card);
  backdrop-filter: blur(10px);
}
.conv-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 18px;
  color: var(--tx-faint);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 40%, transparent);
}
.conv-table th, .conv-table td { padding: 10px 18px; text-align: left; }
.conv-table thead th {
  position: sticky;
  top: 0;
  background: var(--card-solid);
  color: var(--tx-dim);
  font-size: 12px;
  letter-spacing: 0.06em;
  z-index: 2;
  border-bottom: 1px solid var(--line);
}
.conv-table tbody tr { border-bottom: 1px solid var(--line); }
.conv-table tbody tr:last-child { border-bottom: none; }
.conv-table tbody tr td:first-child { color: var(--tx); font-weight: 600; white-space: nowrap; }
.conv-table tbody tr td:last-child { color: var(--tx-dim); }
.conv-table tbody tr:hover { background: var(--hover); }

.arch { max-width: 1060px; margin: 0 auto; }

.arch-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 860px) { .arch-grid { grid-template-columns: 1fr; } }

.arch-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.arch-x {
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 13px;
  color: var(--acc-2);
  border: 1px solid color-mix(in srgb, var(--acc-2) 35%, transparent);
  border-radius: 8px;
  padding: 3px 10px;
}
.arch-card h3 { margin: 14px 0 8px; font-size: 17px; }
.arch-card p { margin: 0 0 12px; font-size: 13.5px; color: var(--tx-dim); }
.arch-card ul { margin: 0; padding-left: 18px; display: grid; gap: 5px; font-size: 13px; color: var(--tx-dim); }

.arch-flow {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 26px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 30px;
  backdrop-filter: blur(10px);
}
@media (max-width: 860px) { .arch-flow { flex-direction: column; } }

.arch-flow svg { width: 300px; height: 150px; flex: none; }
.flow-line {
  fill: none;
  stroke: color-mix(in srgb, var(--acc) 45%, transparent);
  stroke-width: 2;
  stroke-dasharray: 6 8;
  animation: flowDash 2.4s linear infinite;
}
@keyframes flowDash { to { stroke-dashoffset: -28; } }
.flow-dot { fill: var(--acc); }
.flow-chip {
  fill: color-mix(in srgb, var(--acc) 14%, transparent);
  stroke: color-mix(in srgb, var(--acc) 40%, var(--line));
  stroke-width: 1.2;
}
.arch-flow text { font-size: 10px; fill: var(--tx-dim); font-family: "Noto Sans JP", sans-serif; }

.arch-flow p { margin: 0; font-size: 14px; color: var(--tx-dim); }

.install { max-width: 880px; margin: 0 auto; }

.steps { list-style: none; margin: 0 0 40px; padding: 0; display: grid; gap: 14px; counter-reset: step; }

.steps li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 22px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  position: relative;
  backdrop-filter: blur(10px);
}
@media (max-width: 600px) { .steps li { grid-template-columns: 1fr; gap: 8px; } }

.step-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 22px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--acc);
  line-height: 1;
}
html[data-theme="light"] .step-num { -webkit-text-stroke-color: var(--acc-2); }

.steps li h3 { margin: 0 0 6px; font-size: 16.5px; }
.steps li p { margin: 0; font-size: 13.5px; color: var(--tx-dim); }
.steps li .note {
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--acc);
  background: color-mix(in srgb, var(--acc) 7%, transparent);
  border-radius: 0 8px 8px 0;
  font-size: 12.5px;
}

.install-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 50px; }

.reqs {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.reqs h3 { margin: 0 0 12px; font-size: 16px; }
.reqs ul { margin: 0 0 10px; padding-left: 20px; display: grid; gap: 5px; font-size: 13.5px; color: var(--tx-dim); }
.reqs-note { margin: 0; font-size: 12.5px; color: var(--tx-faint); }

.pkg { max-width: 900px; margin: 0 auto; }

.code-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 760px) { .code-grid { grid-template-columns: 1fr; } }

.code-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.code-head {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 35%, transparent);
}
.code-dot { width: 11px; height: 11px; border-radius: 50%; }
.code-dot.r { background: #f87171; }
.code-dot.y { background: #fbbf24; }
.code-dot.g { background: #34d399; }
.code-title { margin-left: auto; margin-right: 14px; font-size: 11.5px; color: var(--tx-faint); font-family: "JetBrains Mono", monospace; }

.code-body {
  margin: 0;
  padding: 18px 20px;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.8;
  overflow-x: auto;
  color: var(--tx);
}
.code-body .cm { color: var(--tx-faint); }

.gallery { max-width: 1060px; margin: 0 auto; }

.gal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
@media (max-width: 760px) { .gal-grid { grid-template-columns: 1fr; } }

.gal-item { margin: 0; }

.faq { max-width: 800px; margin: 0 auto; }

.faq-list { display: grid; gap: 10px; }

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s;
}
.faq-list details[open] { border-color: color-mix(in srgb, var(--acc) 45%, var(--line)); background: color-mix(in srgb, var(--card) 92%, var(--acc) 4%); }

.faq-list summary {
  padding: 17px 22px;
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before {
  content: "+";
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 15px;
  border-radius: 7px;
  color: var(--acc);
  background: color-mix(in srgb, var(--acc) 12%, transparent);
  transition: transform 0.3s ease;
}
.faq-list details[open] summary::before { transform: rotate(45deg); }

.faq-list summary:hover { background: var(--hover); }

.faq-list details p {
  margin: 0;
  padding: 0 22px 19px 56px;
  font-size: 13.5px;
  color: var(--tx-dim);
}

.faq-foot { text-align: center; margin-top: 26px; font-size: 13px; color: var(--tx-dim); }

.final { text-align: center; }

.final-word {
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.5;
  margin: 0 0 30px;
}
.final-actions { margin-bottom: 20px; }
.final-note { color: var(--tx-faint); font-size: 12.5px; margin: 0; }

.site-foot {
  border-top: 1px solid var(--line);
  padding: 44px 24px 30px;
  position: relative;
  z-index: 1;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
}

.foot-top {
  max-width: var(--wrap);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}

.foot-cols { display: flex; gap: 56px; }
@media (max-width: 600px) { .foot-cols { gap: 36px; } }

.foot-col { display: grid; gap: 7px; }
.foot-h {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tx-faint);
  margin-bottom: 4px;
}
.foot-col a { font-size: 13.5px; color: var(--tx-dim); transition: color 0.2s; }
.foot-col a:hover { color: var(--acc); }

.foot-bottom {
  max-width: var(--wrap);
  margin: 34px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--tx-faint);
}
.foot-bottom p { margin: 0; }
.foot-vibe { font-style: italic; }

.modal-bg {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  background: rgba(3, 5, 10, 0.55);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.25s ease;
}
.modal-bg.open { opacity: 1; }
html[data-theme="light"] .modal-bg { background: rgba(30, 41, 59, 0.3); }

.modal {
  width: min(520px, 90vw);
  background: var(--card-solid);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: translateY(16px) scale(0.97);
  transition: transform 0.25s ease;
}
.modal-bg.open .modal { transform: none; }

.modal-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 40%, transparent);
}
.modal-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--acc), var(--acc-2));
}
.modal-title { font-weight: 700; font-size: 15px; }
.modal-x {
  margin-left: auto;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  color: var(--tx-dim);
  font-size: 14px;
  display: grid;
  place-items: center;
  transition: background 0.15s, color 0.15s;
}
.modal-x:hover { background: var(--hover); color: var(--tx); }

.modal-body { padding: 20px 22px 24px; display: grid; gap: 12px; }
.modal-body p { margin: 0; font-size: 13.5px; color: var(--tx-dim); }
.modal-body strong { color: var(--tx); }
.modal-tip {
  font-size: 12px;
  color: var(--acc);
  background: color-mix(in srgb, var(--acc) 8%, transparent);
  border: 1px dashed color-mix(in srgb, var(--acc) 35%, transparent);
  border-radius: 10px;
  padding: 10px 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1000;
  background: linear-gradient(90deg, var(--acc), var(--acc-2), var(--acc-3));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.bg canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}
html[data-theme="light"] body::after { opacity: 0.07; }

.ch { display: inline-block; }

.hero .grad { display: inline-block; white-space: nowrap; text-align: center; }

.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: "";
  position: absolute;
  top: -20%;
  bottom: -20%;
  left: -70%;
  width: 45%;
  transform: skewX(-22deg);
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.42), transparent);
  transition: left 0.55s ease;
  pointer-events: none;
}
.btn-primary:hover::after { left: 135%; }

.tilt {
  position: relative;
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.tilt.tilting { transition: transform 0.07s linear; }
.tilt:hover { transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); }
.tilt::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--acc) 9%, transparent), transparent 65%);
  opacity: 0;
  transition: opacity 0.35s;
}
.tilt:hover::after { opacity: 1; }

.faq-list details[open] p { animation: faqOpen 0.35s ease; }
@keyframes faqOpen { from { opacity: 0; transform: translateY(-6px); } }

@media (prefers-reduced-motion: reduce) {
  .tilt, .tilt:hover { transform: none; }
}