/* C4D Live Bridge landing page (shared by / and /en/). Dark brand page:
   black, purple -> blue accent taken from the logo. */
:root {
  --bg: #07080c;
  --bg2: #0e1118;
  --card: #12161f;
  --line: #222838;
  --fg: #eef1f6;
  --dim: #9aa3b4;
  --faint: #6b7385;
  --purple: #9b4dff;
  --blue: #2f9bff;
  --grad: linear-gradient(90deg, #9b4dff, #2f9bff);
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: "Inter", "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased;
}
:lang(ja) body, body:lang(ja) { line-height: 1.85; }
img { max-width: 100%; display: block; }
a { color: var(--blue); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---- header ---- */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(7,8,12,.86); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.nav .brand { display: flex; align-items: center; text-decoration: none; }
.nav .brand img { height: 26px; width: auto; mix-blend-mode: screen; }
.nav .links { display: flex; gap: 18px; margin-left: auto; font-size: 14px; }
.nav .links a { color: var(--dim); text-decoration: none; }
.nav .links a:hover { color: var(--fg); }
.nav .lang { font-size: 13px; color: var(--dim); text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; white-space: nowrap; }
.nav .buy { font-size: 14px; font-weight: 600; color: #fff; text-decoration: none; background: var(--grad); border-radius: 999px; padding: 7px 16px; white-space: nowrap; }
@media (max-width: 760px) { .nav .links { display: none; } .nav .lang { margin-left: auto; } }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px; font-weight: 600; text-decoration: none; font-size: 15px; }
.btn.primary { color: #fff; background: var(--grad); }
.btn.ghost { color: var(--fg); border: 1px solid #39415a; }
.btn.ghost:hover { border-color: #59627e; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---- hero ---- */
.hero { position: relative; overflow: hidden; padding: 72px 0 64px; }
.hero::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 120%;
  background:
    radial-gradient(520px 300px at 22% 40%, rgba(155,77,255,.22), transparent 70%),
    radial-gradient(520px 300px at 78% 45%, rgba(47,155,255,.20), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero .logo { width: min(620px, 100%); height: auto; mix-blend-mode: screen; margin-bottom: 28px; }
.hero .kicker { color: var(--dim); font-size: 14px; letter-spacing: .04em; margin: 0 0 10px; }
.hero h1 { font-size: clamp(28px, 4.6vw, 46px); line-height: 1.3; margin: 0 0 18px; letter-spacing: -0.01em; }
.hero .lead { color: #c9cfdb; font-size: 17px; max-width: 720px; margin: 0 0 28px; }
.hero .meta { color: var(--faint); font-size: 13px; margin-top: 18px; }

/* ---- sections ---- */
section { padding: 72px 0; }
section.alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-title { font-size: clamp(22px, 3.2vw, 32px); line-height: 1.35; margin: 0 0 10px; }
.sec-lead { color: var(--dim); margin: 0 0 36px; max-width: 720px; }

/* ---- scenarios ---- */
.scenes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 820px) { .scenes { grid-template-columns: 1fr; } }
.scene { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 24px 22px; display: flex; flex-direction: column; }
.scene blockquote { margin: 0 0 14px; font-size: 19px; font-weight: 700; line-height: 1.5; }
.scene blockquote::before { content: "\201C"; color: var(--purple); margin-right: 2px; }
.scene blockquote::after { content: "\201D"; color: var(--blue); margin-left: 2px; }
.scene p { margin: 0 0 12px; color: #c9cfdb; }
.scene .note { font-size: 13px; color: var(--faint); }
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 6px 0 14px; font-size: 13px; }
.flow span { background: #1a2030; border: 1px solid #2a3248; border-radius: 8px; padding: 4px 10px; white-space: nowrap; }
.flow i { font-style: normal; color: var(--blue); }
.flow b { font-weight: 600; background: none; }
.prep { margin: 2px 0 14px; padding: 12px 14px; border-radius: 10px; background: rgba(47,155,255,.08); border: 1px solid rgba(47,155,255,.35); font-size: 14px; color: #d6dbe6; line-height: 1.7; }
.prep b { display: inline-block; margin-right: 8px; font-size: 12px; letter-spacing: .06em; color: #fff; background: var(--blue); border-radius: 6px; padding: 1px 8px; }
.prep a { color: #8cc8ff; }
.tag { margin-top: auto; align-self: flex-start; font-size: 12px; letter-spacing: .06em; color: #cbb4ff; border: 1px solid #4a3a78; border-radius: 999px; padding: 2px 10px; }
.scenes.small .scene blockquote { font-size: 17px; }

/* ---- panel / screenshots ---- */
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 820px) { .panel-grid { grid-template-columns: 1fr; } }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.shots figure { margin: 0; }
.shots img { border-radius: 10px; border: 1px solid var(--line); }
.shots figcaption { font-size: 12px; color: var(--faint); margin-top: 6px; text-align: center; }
.feat { list-style: none; padding: 0; margin: 0; }
.feat li { padding: 12px 0; border-bottom: 1px solid var(--line); }
.feat li:last-child { border-bottom: 0; }
.feat strong { display: block; }
.feat span { color: var(--dim); font-size: 15px; }

/* ---- steps ---- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 700; margin-bottom: 10px; }
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--dim); font-size: 15px; }

/* ---- videos ---- */
.videos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 820px) { .videos { grid-template-columns: 1fr; } }
.video .frame { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #000; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video p { margin: 8px 0 0; color: var(--dim); font-size: 14px; }
.video .yt { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; background: #000; cursor: pointer; }
.video .yt img { display: block; width: 100%; height: 100%; object-fit: cover; transition: opacity .2s; }
.video .yt:hover img { opacity: .85; }
.video .yt-play { position: absolute; left: 50%; top: 50%; width: 68px; height: 48px; margin: -24px 0 0 -34px; border-radius: 12px; background: rgba(15, 17, 24, .82); transition: background .2s; }
.video .yt-play::after { content: ""; position: absolute; left: 27px; top: 14px; border-style: solid; border-width: 10px 0 10px 17px; border-color: transparent transparent transparent #fff; }
.video .yt:hover .yt-play, .video .yt:focus-visible .yt-play { background: var(--purple); }
.video p a { color: var(--dim); margin-left: 6px; white-space: nowrap; }

/* ---- demo + pricing ---- */
.offer { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 820px) { .offer { grid-template-columns: 1fr; } }
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; }
.box.hl { border-color: #4a3a78; box-shadow: 0 0 0 1px rgba(155,77,255,.25), 0 20px 60px -30px rgba(155,77,255,.5); }
.box h3 { margin: 0 0 4px; font-size: 20px; }
.price { font-size: 44px; font-weight: 800; line-height: 1.1; margin: 10px 0 2px; }
.price small { font-size: 15px; font-weight: 400; color: var(--dim); margin-left: 6px; }
.box ul { padding-left: 20px; margin: 14px 0 22px; color: #c9cfdb; }
.box li { margin: 4px 0; }
.box .btns { margin-top: auto; }
.box .fine { font-size: 13px; color: var(--faint); margin: 12px 0 0; }
.howbuy { margin-top: 18px; font-size: 14px; color: var(--dim); }
.howbuy ol { margin: 6px 0 0; padding-left: 20px; }

/* ---- requirements / faq ---- */
.req { width: 100%; border-collapse: collapse; font-size: 15px; }
.req th, .req td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.req th { color: var(--dim); font-weight: 500; width: 28%; }
.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "Q."; color: var(--purple); margin-right: 8px; }
.faq details p { color: #c9cfdb; margin: 10px 0 0; }

/* ---- author / footer ---- */
.author { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.author .mark { width: 54px; height: 54px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; font-weight: 800; }
.author p { margin: 0 0 10px; color: #c9cfdb; }
.author .sig { color: var(--dim); font-size: 14px; margin: 0; }
footer { padding: 36px 0 48px; color: var(--faint); font-size: 13px; border-top: 1px solid var(--line); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
footer a { color: var(--dim); }

/* ---- AE setup cards (getting started) ---- */
.sub-title { font-size: 18px; margin: 34px 0 12px; }
.ae-setup { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 820px) { .ae-setup { grid-template-columns: 1fr; } }
.ae-setup .card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.ae-setup h4 { margin: 0 0 8px; font-size: 16px; }
.ae-setup ol { margin: 0; padding-left: 20px; color: #c9cfdb; font-size: 15px; }
.ae-setup li { margin: 5px 0; }
.ae-setup a { color: #8cc8ff; }

/* ---- scene illustrations (generated with GPT Image 2.5) ---- */
.scene-img { display: block; background: #0e1118; width: calc(100% + 48px); height: auto; max-width: none; margin: -24px -24px 18px; aspect-ratio: 3 / 2; object-fit: cover; border-radius: var(--radius) var(--radius) 0 0; border-bottom: 1px solid var(--line); }
.scenes.small .scene-img { aspect-ratio: 16 / 9; }
.img-note { margin: 14px 0 0; font-size: 12px; color: var(--faint); text-align: right; }