:root{--bg: #0b0e14;--panel: #141925;--border: #2a3346;--text: #e6e6e6;--text3: #8b95a7;--accent: #3b82f6;--green: #34d399;--orange: #fbbf24;--red: #f87171}body.light{--bg: #f6f7f9;--panel: #ffffff;--border: #d8dde6;--text: #1b2230;--text3: #6b7585}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Space Grotesk,system-ui,sans-serif}.kst-loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--text3)}.kst-auth{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}.kst-login{width:320px;max-width:90vw;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:28px 24px}.kst-login h1{font-size:20px;margin-bottom:4px}.kst-sub{font-size:13px;color:var(--text3);margin-bottom:18px}.kst-login input{width:100%;padding:10px 12px;margin-bottom:10px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px}.kst-login button{width:100%;padding:10px;background:var(--accent);border:none;border-radius:8px;color:#fff;font-size:14px;font-weight:600;cursor:pointer}.kst-login button:disabled{opacity:.6;cursor:default}.kst-err{color:var(--red);font-size:12px;margin-top:10px}.kst-topbar{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--border)}.kst-user{margin-left:auto;color:var(--text3);font-size:13px}.kst-topbar button{background:transparent;border:1px solid var(--border);color:var(--text);border-radius:8px;padding:5px 10px;cursor:pointer}.kst-main{padding:24px 16px;max-width:760px}.kst-main p{margin-bottom:12px;line-height:1.5}.kst-note{color:var(--text3);font-size:13px}code{background:var(--panel);padding:1px 6px;border-radius:5px}.kst-setlist{list-style:none;display:grid;gap:8px;margin-top:12px}.kst-setbtn{width:100%;text-align:left;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);cursor:pointer;display:flex;flex-direction:column;gap:4px}.kst-setbtn:hover{border-color:var(--accent)}.kst-setmeta{color:var(--text3);font-size:12px}.kst-quiz{max-width:640px}.kst-quiz-head{display:flex;justify-content:space-between;color:var(--text3);font-size:13px;margin-bottom:12px}.kst-question{font-size:18px;line-height:1.4;margin-bottom:16px}.kst-options{display:grid;gap:8px}.kst-opt{text-align:left;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 14px;color:var(--text);cursor:pointer}.kst-opt:hover:not(:disabled){border-color:var(--accent)}.kst-opt:disabled{cursor:default}.kst-opt.ok{border-color:var(--green);background:color-mix(in srgb,var(--green) 14%,var(--panel))}.kst-opt.bad{border-color:var(--red);background:color-mix(in srgb,var(--red) 14%,var(--panel))}.kst-opt.sel{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,var(--panel))}.kst-timer{font-variant-numeric:tabular-nums}.kst-timer.low{color:var(--red);font-weight:600}.kst-expl{margin-top:12px;padding:10px 12px;background:var(--panel);border-left:3px solid var(--accent);border-radius:6px;font-size:14px;color:var(--text3)}.kst-actions{display:flex;gap:10px;margin-top:16px}.kst-actions button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:9px 16px;cursor:pointer;font-weight:600}.kst-actions button.ghost{background:transparent;border:1px solid var(--border);color:var(--text);font-weight:400}.kst-score{font-size:28px;font-weight:700;margin:8px 0 4px}.kst-nav{display:flex;gap:4px}.kst-nav button,.kst-tabs button{background:transparent;border:1px solid transparent;color:var(--text3);border-radius:8px;padding:5px 12px;cursor:pointer}.kst-nav button.on,.kst-tabs button.on{color:var(--text);border-color:var(--border);background:var(--panel)}.kst-tabs{display:flex;gap:6px;margin-bottom:16px}.kst-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px}.kst-row label,.kst-import label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--text3)}.kst-row input,.kst-row select,.kst-import input{background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:7px 10px;font-size:14px}.kst-import label{margin-bottom:10px}.kst-prompt{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:10px;color:var(--text);padding:12px;font-family:ui-monospace,monospace;font-size:12px;line-height:1.4;resize:vertical}.kst-plan{list-style:none;margin-top:12px;display:grid;gap:6px}.kst-plan li{padding:8px 12px;border-radius:8px;border:1px solid var(--border);font-size:13px}.kst-plan li.ok{border-left:3px solid var(--green)}.kst-plan li.bad{border-left:3px solid var(--red);color:var(--text3)}.kst-ok{color:var(--green);margin-top:10px}.kst-cov{margin:6px 0 16px}.kst-seal{color:var(--green);font-weight:600}.kst-block{border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin-bottom:10px}.kst-block-head{display:flex;gap:12px;align-items:center;margin-bottom:8px}.kst-objs{list-style:none;display:grid;gap:6px}.kst-objs li{display:flex;align-items:center;gap:8px;font-size:13px}.kst-dot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}.kst-obj-text{flex:1;color:var(--text)}.kst-obj-n{color:var(--text3);font-size:12px;white-space:nowrap}.kst-obj-n.red{color:var(--red)}.kst-stats{font-size:13px;color:var(--text3);white-space:nowrap}.kst-theme{display:inline-flex;align-items:center;gap:4px}.kst-theme input[type=color]{width:24px;height:24px;border:1px solid var(--border);border-radius:6px;background:none;padding:0;cursor:pointer}.kst-theme button{background:transparent;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:2px 8px;cursor:pointer}.kst-badges{list-style:none;display:grid;gap:8px;margin-top:12px}.kst-badges li{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--border);border-radius:10px}.kst-badges li.locked{opacity:.55}.kst-badges li.got{border-left:3px solid var(--green)}.kst-badge-icon{font-size:18px}.kst-badge-text{display:flex;flex-direction:column;gap:2px;flex:1}