.tut-header { text-align: center; padding: 40px 24px 24px; position: relative; z-index: 2; }
.lore-back { font-family: var(--font-mono); font-size: 12px; color: var(--teal); text-decoration: none; letter-spacing: 2px; display: inline-block; margin-bottom: 16px; transition: all 0.2s; border: 1px solid var(--teal-dim); padding: 6px 14px; }
.lore-back:hover { background: rgba(0,200,200,0.1); border-color: var(--teal); }
.lore-logo { font-family: var(--font-title); font-size: 28px; font-weight: 700; letter-spacing: 6px; color: var(--teal); margin-bottom: 6px; }
.lore-sub { font-family: var(--font-mono); font-size: 11px; color: var(--dim); letter-spacing: 3px; }
.header-line { width: 120px; height: 1px; background: linear-gradient(90deg, transparent, var(--teal-dim), transparent); margin: 16px auto 0; }

.tut-wrap { max-width: 720px; margin: 0 auto; padding: 0 24px 80px; position: relative; z-index: 2; }

/* 터미널 */
.tut-terminal { background: #0a0f0f; border: 1px solid var(--teal); margin-bottom: 20px; min-height: 360px; display: flex; flex-direction: column; }
.tut-terminal-bar { display: flex; align-items: center; gap: 6px; padding: 10px 16px; background: var(--teal); border-bottom: 1px solid var(--border); }
.signal-group { display: inline-flex; align-items: flex-end; gap: 2px; }
.signal-group .bar { width: 4px; border-radius: 1px; }
.signal-default .bar { background: #0a0f0f; }
.signal-default .bar:nth-child(1) { height: 6px; }
.signal-default .bar:nth-child(2) { height: 9px; }
.signal-default .bar:nth-child(3) { height: 12px; }
.tut-terminal-title { font-family: var(--font-mono); font-size: 11px; color: var(--bg); letter-spacing: 2px; margin-left: 8px; }
.tut-lines { flex: 1; padding: 20px; display: flex; flex-direction: column; gap: 6px; overflow:hidden; }
.tut-line { font-family: var(--font-mono); font-size: 13px; line-height: 1.8; opacity: 0; overflow-wrap:anywhere; word-break:break-all; }
.tut-line.show { opacity: 1; }
.tut-line.sheep { color: var(--teal); }
.tut-line.system { color: var(--dim); }
.tut-line.warn { color: var(--yellow); }
.tut-line.normal { color: rgba(255,255,255,0.75); }
.tut-line.blank { height: 8px; }
.tut-line.indent { padding-left: 20px; color: rgba(255,255,255,0.6); }
.tut-cursor { font-family: var(--font-mono); color: var(--teal); padding: 0 20px 16px; animation: blink 1s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* 네비게이션 */
.tut-nav { display: flex; align-items: center; justify-content: space-between; }
.tut-nav-btn { font-family: var(--font-mono); font-size: 12px; letter-spacing: 2px; color: var(--teal); background: none; border: 1px solid var(--teal-dim); padding: 10px 20px; cursor: pointer; transition: all 0.2s; }
.tut-nav-btn:hover:not(:disabled) { background: rgba(0,200,200,0.08); }
.tut-nav-btn:disabled { color: var(--dim); border-color: var(--border); cursor: not-allowed; }
.tut-nav-step { font-family: var(--font-mono); font-size: 12px; color: var(--dim); letter-spacing: 2px; }
@media (max-width: 600px) {
    .tut-wrap { padding:0 16px 60px; }
    .lore-logo { font-size:22px; letter-spacing:4px; }
    .tut-terminal { min-height:280px; }
    .tut-line { font-size:12px; line-height:1.7; }
    .tut-nav-btn { padding:8px 14px; font-size:11px; }
}