:root{--bg: #0a0e14;--panel: #121823;--panel-2: #1a2230;--line: #25303f;--text: #e8eef6;--muted: #8a99ad;--accent: #38e8ff;--accent-dim: #1e6f7e;--done: #37f5a0;--warn: #ffb347;--danger: #ff5c6c;--radius: 12px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased}button{cursor:pointer;font:inherit;border-radius:8px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);padding:8px 14px;transition:background .15s,border-color .15s,transform .05s}button:hover{border-color:var(--accent-dim)}button:active{transform:translateY(1px)}button.primary{background:var(--accent);color:#04141a;border-color:transparent;font-weight:600}button.primary:hover{filter:brightness(1.05)}button.primary.big{padding:12px 28px;font-size:16px}button.ghost{background:transparent}button.small{padding:4px 10px;font-size:12px}.app{display:flex;flex-direction:column;height:100%}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--line);background:var(--panel)}.brand{display:flex;align-items:center;gap:12px}.logo{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-dim));color:#04141a;font-size:20px;font-weight:700}.brandTitle{font-weight:700;letter-spacing:.3px}.brandTag{font-size:12px;color:var(--muted)}.topActions{display:flex;align-items:center;gap:10px}.langToggle{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.langToggle button{border:none;border-radius:0;background:transparent;padding:8px 12px;font-size:12px}.langToggle button.active{background:var(--accent);color:#04141a;font-weight:600}.sampleSwitch{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}.sampleSwitch button{border:none;border-radius:0;background:transparent;padding:8px 12px;font-size:13px;color:var(--muted)}.sampleSwitch button.active{background:var(--panel-2);color:var(--accent);font-weight:600}.main{flex:1;min-height:0;display:flex}.landing{flex:1;display:grid;place-items:center;padding:24px}.landingCard{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px;max-width:460px;width:100%;text-align:center}.landingKicker{color:var(--accent);font-size:12px;text-transform:uppercase;letter-spacing:1px}.landingCard h1{margin:8px 0 16px;font-size:28px}.landingSteps{text-align:left;margin:0 auto 20px;max-width:300px;color:var(--text);line-height:1.9}.landingHint{color:var(--muted);font-size:14px;margin-bottom:22px}.stage{flex:1;display:grid;place-items:center;padding:16px;min-height:0}.videoWrap{position:relative;width:100%;max-width:960px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#000}.video{display:block;width:100%;height:auto;transform:scaleX(-1)}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.stageTop{position:absolute;top:12px;left:12px;right:12px;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text);background:#0a0e148c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);padding:6px 10px;border-radius:8px}.stageTop .sep{color:var(--muted)}.stageTop .topRight{margin-left:auto;display:flex;gap:8px;pointer-events:auto}.stageTop button{pointer-events:auto}.stageTop button.on{border-color:var(--accent);color:var(--accent)}.statusDot{width:9px;height:9px;border-radius:50%;background:var(--muted)}.statusDot.ok{background:var(--done);box-shadow:0 0 8px var(--done)}.statusDot.warn{background:var(--warn)}.stepChips{position:absolute;top:52px;left:12px;display:flex;flex-direction:column;gap:6px}.chip{font-size:12px;padding:6px 12px;border-radius:999px;background:#121823b3;border:1px solid var(--line);color:var(--muted)}.chip.active{border-color:var(--accent);color:var(--accent)}.chip.done{border-color:var(--done);color:var(--done)}.chip.done:before{content:"✓ "}.stepCard{position:absolute;left:50%;bottom:16px;transform:translate(-50%);width:min(440px,calc(100% - 32px));background:#0a0e14d1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;pointer-events:auto}.stepCardHead{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--accent)}.stepTitle{font-size:20px;font-weight:700;margin:4px 0}.stepInstruction{color:var(--muted);font-size:14px;margin-bottom:12px}.holdBar{height:6px;background:var(--panel-2);border-radius:99px;overflow:hidden}.holdFill{height:100%;background:var(--done);transition:width .12s linear}.stepHint{font-size:12px;color:var(--muted);margin:8px 0 12px}.stepCard .primary{width:100%}.centerCard{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#0a0e14d9;border:1px solid var(--line);border-radius:var(--radius);padding:24px 28px;text-align:center;max-width:80%}.centerCard.error{border-color:var(--danger);color:var(--danger)}.finished{pointer-events:auto}.finishedCheck{width:64px;height:64px;margin:0 auto 12px;display:grid;place-items:center;border-radius:50%;background:var(--done);color:#04141a;font-size:36px;font-weight:700}.finishedTitle{font-size:24px;font-weight:700}.finishedBody{color:var(--muted);margin:6px 0 18px}.finishedActions{display:flex;gap:10px;justify-content:center}.settingsPanel{position:absolute;top:52px;right:12px;width:min(340px,calc(100% - 24px));max-height:calc(100% - 72px);overflow-y:auto;background:#0a0e14eb;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:var(--radius);padding:14px;pointer-events:auto;display:flex;flex-direction:column;gap:10px}.settingsHead{display:flex;align-items:center;justify-content:space-between;font-weight:700}.settingsDetect{display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--muted);align-items:center}.settingsDetect .ok{color:var(--done)}.settingsDetect .off{color:var(--danger);opacity:.6}.settingsHint{font-size:11px;color:var(--muted);margin:0}.tuneRow{border:1px solid var(--line);border-radius:8px;padding:10px;display:flex;flex-direction:column;gap:6px}.tuneRow.current{border-color:var(--accent)}.tuneTop{display:flex;align-items:center;justify-content:space-between;gap:8px}.tuneName{font-size:13px;font-weight:600}.tuneTop code{font-size:10px;color:var(--muted)}.tuneMeter{position:relative;height:10px;background:var(--panel-2);border-radius:99px;overflow:hidden}.meterFill{height:100%;transition:width .08s linear}.meterThr{position:absolute;top:-2px;bottom:-2px;width:2px;background:#fff;opacity:.85;overflow:visible}.tuneLabels{font-size:11px;color:var(--muted)}.tuneSlider{display:flex;flex-direction:column;gap:2px;font-size:11px;color:var(--muted)}.tuneSlider input{width:100%;accent-color:var(--accent)}@media (max-width: 600px){.brandTag,.stepChips{display:none}}