.page-hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 80% at 30% 0%, rgba(124,92,255,.22), transparent 70%); pointer-events: none; }
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(1.75rem, 5vw, 3rem); margin-bottom: .6rem; }
.page-hero p { max-width: 620px; font-size: 1.05rem; }
@media (max-width: 640px) { .page-hero { padding: 40px 0 32px; } .page-hero p { font-size: .95rem; } }

.doc-layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 4rem; padding: 56px 0 96px; }
.doc-nav { position: sticky; top: 84px; align-self: start; max-height: calc(100dvh - 120px); overflow-y: auto; }
.doc-nav h5 { font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-3); margin: 1.25rem 0 .5rem; }
.doc-nav h5:first-child { margin-top: 0; }
.doc-nav a { display: block; padding: .35rem 0; font-size: .86rem; color: var(--fg-1); border-left: 2px solid transparent; padding-left: .75rem; margin-left: -2px; transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.doc-nav a:hover { color: var(--cyan); }
.doc-nav a.active { color: var(--fg-0); border-color: var(--cyan); }
.doc-content { max-width: 720px; min-width: 0; }
.doc-content h2 { font-size: 1.7rem; margin-top: 3rem; padding-top: 1rem; }
.doc-content h2:first-child { margin-top: 0; }
.doc-content h3 { font-size: 1.15rem; margin-top: 2rem; }
.doc-content p, .doc-content li { font-size: .95rem; color: var(--fg-1); }
.doc-content ul { padding-left: 1.2rem; }
.doc-content li { margin-bottom: .35rem; }
.doc-content pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r); padding: 1rem 1.15rem; overflow-x: auto; -webkit-overflow-scrolling: touch; font-size: .82rem; line-height: 1.7; margin: 1.1rem 0; }
.doc-content pre code { background: none; border: none; padding: 0; color: var(--fg-0); }
.callout { border-left: 3px solid var(--cyan); background: rgba(34,211,238,.08); padding: .9rem 1.1rem; border-radius: 0 var(--r) var(--r) 0; margin: 1.2rem 0; font-size: .92rem; }
.callout.warn { border-color: var(--amber); background: rgba(251,191,36,.08); }

@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; gap: 1.5rem; padding: 32px 0 64px; }
  .doc-nav { position: static; max-height: none; display: flex; gap: .5rem; overflow-x: auto; padding-bottom: .5rem; margin-bottom: 1rem; border-bottom: 1px solid var(--line); -webkit-overflow-scrolling: touch; }
  .doc-nav h5 { display: none; }
  .doc-nav a { flex: 0 0 auto; white-space: nowrap; border-left: none; border: 1px solid var(--line); padding: .4rem .8rem; border-radius: 999px; margin: 0; font-size: .8rem; }
  .doc-nav a.active { border-color: var(--cyan); background: rgba(34,211,238,.1); }
}

.model-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); gap: 1.1rem; }
.model-card { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.3rem; display: flex; flex-direction: column; gap: .6rem; transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.model-card:hover { transform: translateY(-3px); border-color: var(--line-2); }
.model-card .mc-head { display: flex; justify-content: space-between; align-items: flex-start; gap: .6rem; }
.model-card h3 { margin: 0; font-size: 1rem; }
.model-card .mc-badge { font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; background: rgba(34,211,238,.15); color: var(--cyan); border: 1px solid rgba(34,211,238,.3); flex: 0 0 auto; }
.model-card .mc-badge.gpu { background: rgba(124,92,255,.15); color: var(--violet-2); border-color: rgba(124,92,255,.3); }
.model-card p { font-size: .84rem; margin: 0; }
.model-card .mc-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; padding-top: .8rem; border-top: 1px solid var(--line); font-family: var(--mono); font-size: .7rem; }
.model-card .mc-meta div span { display: block; color: var(--fg-3); letter-spacing: .06em; text-transform: uppercase; margin-bottom: 2px; font-size: .6rem; }
.model-card .mc-meta div b { color: var(--fg-0); font-weight: 600; }

.roadmap { display: grid; gap: 1rem; }
.rm-item { display: grid; grid-template-columns: 88px 1fr; gap: 1.2rem; padding: 1rem 1.2rem; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r); }
.rm-item .rm-tag { font-family: var(--mono); font-size: .72rem; padding: .25rem .55rem; border-radius: 999px; align-self: start; justify-self: start; background: rgba(124,92,255,.15); color: var(--violet-2); border: 1px solid rgba(124,92,255,.3); }
.rm-item .rm-tag.done { background: rgba(52,211,153,.15); color: var(--green); border-color: rgba(52,211,153,.3); }
.rm-item h4 { margin: 0 0 .3rem; }
.rm-item p { font-size: .87rem; margin: 0; color: var(--fg-2); }
@media (max-width: 560px) { .rm-item { grid-template-columns: 1fr; gap: .6rem; padding: .9rem; } }

.page-footer { margin-top: 0; }