/* 한결 튜토리얼: 영상 하나와 장면 목록, 아래에 글로 따라 하기. */
.tut { padding-block: 48px 72px; }
.tut h1 { font-size: clamp(30px, 4vw, 42px); letter-spacing: -.02em; }
.tut > h2 { font-size: 26px; margin-top: 56px; }
.player { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 24px; margin-top: 28px; align-items: start; }
.player video { width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line); background: #000; }
.chapters { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.chapters button { width: 100%; text-align: left; display: flex; gap: 12px; padding: 10px 12px; border-radius: 10px; border: 1px solid transparent; background: none; color: var(--ink); font: inherit; cursor: pointer; }
.chapters button:hover { border-color: var(--line); background: var(--surface); }
.chapters button[aria-current="true"] { background: var(--surface); border-color: var(--brand); }
.chapters time { color: var(--brand); font-variant-numeric: tabular-nums; min-width: 3.2em; }
.walk { list-style: none; counter-reset: s; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 32px; }
.walk li { counter-increment: s; min-width: 0; }
.walk h3 { font-size: 18px; display: flex; gap: 10px; align-items: baseline; }
.walk h3::before { content: counter(s); color: var(--brand); font-variant-numeric: tabular-nums; }
.walk p { color: var(--sub); margin: 6px 0 12px; }
.walk img { border-radius: 10px; border: 1px solid var(--line); }
.more { margin-top: 40px; color: var(--sub); }
@media (max-width: 860px) { .player, .walk { grid-template-columns: minmax(0, 1fr); } }