:root{--bg:#0a0a0a;--bg2:#141414;--bg3:#1e1e1e;--bg4:#2a2a2a;--brand:#00e1ff;--brand2:#00c8e6;--accent:#66cdaa;--text:#fff;--text2:#bbb;--text3:#777;--border:rgba(255,255,255,0.08);--b2:rgba(255,255,255,0.12);--r:4px;--rs:6px}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:13px;color:var(--text);background:var(--bg);overflow:hidden;-webkit-font-smoothing:antialiased}
::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#444;border-radius:2px}

.hdr{height:44px;background:var(--bg2);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 14px;flex-shrink:0;z-index:100}
.hdr-l{display:flex;align-items:center;gap:8px}
.hdr-l svg{width:22px;height:22px;stroke:var(--brand);stroke-width:2;fill:none}
.hdr-l span{font-size:16px;font-weight:700;letter-spacing:1px}
.hdr-c{flex:1;text-align:center;font-size:12px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:300px;margin:0 auto}
.hdr-r{display:flex;align-items:center;gap:4px}
.sep{width:1px;height:18px;background:var(--border);margin:0 4px}

.btn-i{width:30px;height:30px;border-radius:var(--r);border:none;background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}
.btn-i:hover{background:var(--bg3);color:var(--text)}
.btn-i:disabled{opacity:.25;cursor:not-allowed}
.btn-i svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.btn-p{display:inline-flex;align-items:center;gap:5px;padding:7px 14px;border-radius:var(--r);border:none;background:var(--brand);color:#000;font-size:12px;font-weight:700;cursor:pointer;transition:all .15s}
.btn-p:hover{background:#33e7ff;transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,225,255,.2)}
.btn-p svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;fill:none}
.btn-s{display:inline-flex;align-items:center;gap:5px;padding:7px 12px;border-radius:var(--r);border:1px solid var(--border);background:var(--bg3);color:var(--text);font-size:12px;cursor:pointer;transition:all .15s;justify-content:center}
.btn-s:hover{border-color:var(--text2);background:var(--bg4)}
.btn-s:active{transform:scale(.97)}

.app{display:flex;height:calc(100vh - 44px);overflow:hidden}

.side{width:220px;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;flex-shrink:0}
.psec{padding:10px 12px}
.psec+.psec{border-top:1px solid var(--border)}
.stitle{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--text3);margin-bottom:6px}
.tgroup{display:flex;flex-direction:column;gap:1px}
.tbtn{display:flex;align-items:center;gap:9px;padding:7px 10px;border-radius:var(--r);border:none;background:transparent;color:var(--text2);font-size:12px;cursor:pointer;transition:all .15s;text-align:left;position:relative}
.tbtn svg{width:16px;height:16px;flex-shrink:0;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round}
.tbtn:hover{background:var(--bg3);color:var(--text)}
.tbtn.on{background:rgba(0,225,255,.1);color:var(--brand)}
.tbtn.on::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:50%;background:var(--brand);border-radius:1px}

.glist{display:flex;flex-direction:column;gap:4px;margin-bottom:8px;max-height:160px;overflow-y:auto}
.gitem{display:flex;align-items:center;gap:8px;padding:5px 6px;border-radius:var(--r);cursor:pointer;transition:all .15s;border:2px solid transparent}
.gitem:hover{background:var(--bg3)}
.gitem.on{border-color:var(--brand);background:rgba(0,225,255,.08)}
.gthumb{width:36px;height:36px;border-radius:3px;object-fit:cover;background:var(--bg3);flex-shrink:0}
.ginfo{flex:1;min-width:0}
.gname{font-size:11px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gdim{font-size:10px;color:var(--text3);margin-top:1px}
.gdel{width:18px;height:18px;border-radius:3px;border:none;background:transparent;color:var(--text3);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .15s;flex-shrink:0;padding:0}
.gdel svg{width:12px;height:12px;stroke:currentColor;stroke-width:2;fill:none}
.gitem:hover .gdel{opacity:1}
.gdel:hover{background:rgba(255,60,60,.2);color:#ff4444}

.carea{flex:1;background:var(--bg);display:flex;flex-direction:column;position:relative;overflow:hidden}
.cwrap{flex:1;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:none;
background-image:linear-gradient(45deg,#111 25%,transparent 25%),linear-gradient(-45deg,#111 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#111 75%),linear-gradient(-45deg,transparent 75%,#111 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0;background-color:var(--bg)}
#mcanvas{position:absolute;z-index:1;box-shadow:0 0 0 1px rgba(255,255,255,.1)}
#mcanvas.hasimg{box-shadow:0 0 0 1px rgba(255,255,255,.15),0 8px 32px rgba(0,0,0,.5)}
#mcanvas.edit{box-shadow:0 0 0 2px rgba(0,225,255,.15),0 0 20px rgba(0,225,255,.08)}
#mkcanvas{position:absolute;z-index:10;pointer-events:auto;touch-action:none}
.cropov{position:absolute;z-index:20;display:none;overflow:hidden}
.cropfr{position:absolute;border:2px dashed var(--brand);cursor:move;z-index:2}
.cropfr.sh{box-shadow:0 0 0 9999px rgba(0,0,0,.6),0 0 0 1px rgba(0,225,255,.15)}
.cropin{position:absolute;inset:0;pointer-events:none}
.cropin::before{content:'';position:absolute;top:33.33%;left:0;right:0;height:1px;background:rgba(255,255,255,.2);box-shadow:0 calc(100%/6) 0 rgba(255,255,255,.2)}
.cropin::after{content:'';position:absolute;left:33.33%;top:0;bottom:0;width:1px;background:rgba(255,255,255,.2);box-shadow:calc(100%/6) 0 0 rgba(255,255,255,.2)}
.ch{position:absolute;width:10px;height:10px;background:var(--brand);border:2px solid var(--bg);border-radius:50%;z-index:5}
.ch:hover{transform:scale(1.4);box-shadow:0 0 8px var(--brand)}
.cnw{top:-5px;left:-5px;cursor:nwse-resize}
.cn{top:-5px;left:50%;transform:translateX(-50%);cursor:ns-resize}
.cn:hover{transform:translateX(-50%) scale(1.4)}
.cne{top:-5px;right:-5px;cursor:nesw-resize}
.ce{top:50%;right:-5px;transform:translateY(-50%);cursor:ew-resize}
.ce:hover{transform:translateY(-50%) scale(1.4)}
.cse{bottom:-5px;right:-5px;cursor:nwse-resize}
.cs{bottom:-5px;left:50%;transform:translateX(-50%);cursor:ns-resize}
.cs:hover{transform:translateX(-50%) scale(1.4)}
.csw{bottom:-5px;left:-5px;cursor:nesw-resize}
.cw{top:50%;left:-5px;transform:translateY(-50%);cursor:ew-resize}
.cw:hover{transform:translateY(-50%) scale(1.4)}
.cdl{position:absolute;top:-24px;left:50%;transform:translateX(-50%);background:var(--brand);color:#000;font-size:10px;font-weight:700;padding:2px 7px;border-radius:3px;white-space:nowrap;pointer-events:none;z-index:6}

.empt{position:absolute;display:flex;flex-direction:column;align-items:center;gap:1px;pointer-events:none;z-index:20}
.empt svg{width:56px;height:56px;stroke:#555;stroke-width:1.5;fill:none}
.empt p{font-size:14px;color:var(--text3);font-weight:500}
.empt p.sm{font-size:11px;color:#444;font-weight:400;margin-bottom:4px}
.empt-upload{display:inline-flex;align-items:center;gap:5px;padding:8px 16px;border-radius:var(--r);border:none;background:var(--brand);color:#000;font-size:12px;font-weight:700;cursor:pointer;transition:all .15s;pointer-events:auto;margin-top:4px}
.empt-upload:hover{background:#33e7ff;transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,225,255,.2)}
.empt-upload svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;fill:none}

.rside{width:260px;background:var(--bg2);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;flex-shrink:0;padding:12px}
.ep{text-align:center;color:var(--text3);padding:30px 0;font-size:12px}
.pg{margin-bottom:14px}
.pgt{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.6px;color:var(--text3);margin-bottom:8px}
.pr{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.pr label{font-size:11px;color:var(--text2);min-width:56px;flex-shrink:0}
.pr input[type=number],.pr input[type=text],.pr select{flex:1;padding:6px 8px;border-radius:var(--r);border:1px solid var(--border);background:var(--bg3);color:var(--text);font-size:12px;outline:none}
.pr input:focus{border-color:var(--brand)}
.pr input[type=range]{flex:1;accent-color:var(--brand)}
.pv{font-size:11px;color:var(--text2);min-width:36px;text-align:right;flex-shrink:0}
.pc{width:28px;height:28px;border-radius:var(--r);border:2px solid var(--border);cursor:pointer;overflow:hidden;flex-shrink:0}
.pc input{width:150%;height:150%;margin:-25% 0 0 -25%;padding:0;border:none;cursor:pointer}
.pa{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.pa .btn-p,.pa .btn-s{flex:1;min-width:80px}
.rps{display:flex;flex-wrap:wrap;gap:4px}
.rp{padding:4px 8px;border-radius:var(--r);border:1px solid var(--border);background:var(--bg3);color:var(--text2);font-size:11px;cursor:pointer;transition:all .15s}
.rp:hover{border-color:var(--text2);color:var(--text)}
.rp.on{border-color:var(--brand);color:var(--brand);background:rgba(0,225,255,.1)}
.fs .pr{margin-bottom:10px}

.ftool{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:3px;padding:5px;background:var(--bg2);border-radius:var(--rs);border:1px solid var(--border);box-shadow:0 -2px 16px rgba(0,0,0,.4);z-index:50}
.ftool .btn-i{width:26px;height:26px}
.ftool .btn-i svg{width:14px;height:14px}

.toast{position:fixed;bottom:70px;left:50%;transform:translateX(-50%) translateY(16px);background:var(--bg2);border:1px solid var(--border);border-radius:var(--rs);padding:9px 18px;font-size:12px;color:var(--text);opacity:0;pointer-events:none;transition:all .25s;z-index:1000;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:var(--accent);color:var(--accent)}
.toast.err{border-color:#ff5555;color:#ff5555}

.prog{position:fixed;inset:0;background:rgba(0,0,0,.65);display:none;align-items:center;justify-content:center;z-index:999}
.pbox{background:var(--bg2);border:1px solid var(--border);border-radius:var(--rs);padding:28px 36px;display:flex;flex-direction:column;align-items:center;gap:14px;min-width:260px}
.pspin{width:28px;height:28px;border:2px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.ptxt{font-size:12px;color:var(--text2)}
.pbar{width:100%;height:3px;background:var(--bg3);border-radius:2px;overflow:hidden}
.pfill{height:100%;width:0%;background:var(--brand);transition:width .2s}

.modov{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:998}
.mod{background:var(--bg2);border:1px solid var(--border);border-radius:var(--rs);padding:22px;min-width:320px;max-width:90vw}
.mod h3{font-size:14px;font-weight:700;margin-bottom:16px}
.fg{margin-bottom:12px}
.fg label{display:block;font-size:11px;color:var(--text2);margin-bottom:5px;text-transform:uppercase;letter-spacing:.4px}
.fg input[type=text],.fg input[type=number]{width:100%;padding:7px 10px;border-radius:var(--r);border:1px solid var(--border);background:var(--bg3);color:var(--text);font-size:12px;outline:none}
.fg input:focus{border-color:var(--brand)}
.rg{display:flex;gap:14px}
.rl{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--text);cursor:pointer}
.rl input{accent-color:var(--brand)}
.fg input[type=range]{width:100%;accent-color:var(--brand)}
.ma{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.ma .btn-s{width:auto}

.bcur,.ccur{position:absolute;pointer-events:none;border-radius:50%;z-index:100;transform:translate(-50%,-50%);display:none}
.bcur{border:1.5px solid rgba(255,255,255,.75);box-shadow:0 0 0 1px rgba(0,0,0,.5),inset 0 0 4px rgba(0,0,0,.3)}
.ccur{border:1.5px solid var(--accent);box-shadow:0 0 0 1px rgba(0,0,0,.5)}

.cwrap.dover::after{content:'释放以上传图片';position:absolute;inset:16px;display:flex;align-items:center;justify-content:center;background:rgba(0,225,255,.04);border:2px dashed var(--brand);border-radius:8px;font-size:14px;font-weight:600;color:var(--brand);z-index:100;pointer-events:none}

.puzzprev{display:grid;gap:4px;margin:10px 0;grid-template-columns:repeat(4,1fr)}
.puzzprev .pcell{background:var(--bg3);border:1px solid var(--border);border-radius:var(--r);min-height:50px;display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--text3);cursor:pointer;overflow:hidden;transition:all .15s}
.puzzprev .pcell:hover{border-color:var(--brand);transform:scale(1.02)}
.puzzprev .pcell img{max-width:100%;max-height:100%;object-fit:cover}
.puzzprev .pcell.hasimg{color:transparent;border-color:var(--accent)}

.picktip{position:fixed;top:60px;left:50%;transform:translateX(-50%);background:var(--bg2);border:1px solid var(--brand);border-radius:var(--r);padding:6px 14px;font-size:11px;color:var(--brand);z-index:200;display:none;box-shadow:0 4px 16px rgba(0,0,0,.4)}
.picktip.show{display:block}

/* 高度仿真吸管光标 */
.pick-cursor {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='30' viewBox='0 0 26 30'%3E%3Cdefs%3E%3ClinearGradient id='tube' x1='0' y1='0' x2='1' y2='0'%3E%3Cstop offset='0%25' stop-color='%23cfcfcf'/%3E%3Cstop offset='25%25' stop-color='%23fafafa'/%3E%3Cstop offset='50%25' stop-color='%23e0e0e0'/%3E%3Cstop offset='75%25' stop-color='%23fefefe'/%3E%3Cstop offset='100%25' stop-color='%23b0b0b0'/%3E%3C/linearGradient%3E%3ClinearGradient id='needle' x1='0' y1='0' x2='1' y2='0'%3E%3Cstop offset='0%25' stop-color='%23999'/%3E%3Cstop offset='40%25' stop-color='%23eee'/%3E%3Cstop offset='100%25' stop-color='%23777'/%3E%3C/linearGradient%3E%3C/defs%3E%3C!-- 玻璃管体 --%3E%3Crect x='9' y='1' width='8' height='17' rx='2.5' fill='url(%23tube)' stroke='%23888' stroke-width='0.9'/%3E%3C!-- 管内液体 --%3E%3Crect x='10.5' y='6' width='5' height='10.5' rx='1.5' fill='%23e74c3c' opacity='0.85'/%3E%3C!-- 液体弯月面 --%3E%3Cellipse cx='13' cy='6' rx='2.5' ry='1.2' fill='%23c0392b' opacity='0.9'/%3E%3C!-- 玻璃高光 --%3E%3Crect x='10' y='2' width='2' height='14' rx='1' fill='%23fff' opacity='0.5'/%3E%3C!-- 吸头 --%3E%3Crect x='6.5' y='18' width='13' height='4.5' rx='2' fill='%23e65c4f' stroke='%23b93b2e' stroke-width='0.7'/%3E%3Crect x='7.5' y='19' width='2' height='2.5' rx='1' fill='%23f9a89e' opacity='0.7'/%3E%3C!-- 金属针尖 --%3E%3Cpolygon points='11.8,22.5 14.2,22.5 13.2,29 12.8,29' fill='url(%23needle)' stroke='%23666' stroke-width='0.6'/%3E%3Cpolygon points='12,22.5 12.8,22.5 13,29 12.5,29' fill='%23fff' opacity='0.25'/%3E%3C!-- 针尖点 --%3E%3Ccircle cx='13' cy='29' r='1' fill='%23555'/%3E%3Ccircle cx='13' cy='29' r='2' fill='none' stroke='%23fff' stroke-width='0.5' opacity='0.6'/%3E%3C/svg%3E") 13 29, crosshair;
}
/* 画布编辑状态指示 */
#mcanvas.edit{box-shadow:0 0 0 2px rgba(0,225,255,.2),0 0 30px rgba(0,225,255,.1)}

/* 画笔光标 */
.bcur,.ccur{position:absolute;pointer-events:none;border-radius:50%;z-index:100;transform:translate(-50%,-50%);display:none;transition:width .1s,height .1s}
.bcur{border:2px solid rgba(255,255,255,.9);box-shadow:0 0 0 1px rgba(0,0,0,.6),inset 0 0 6px rgba(0,0,0,.2)}
.ccur{border:2px solid var(--accent);box-shadow:0 0 0 1px rgba(0,0,0,.6)}

/* 拖拽区域高亮 */
.cwrap.dover::after{content:'释放以上传图片';position:absolute;inset:16px;display:flex;align-items:center;justify-content:center;background:rgba(0,225,255,.06);border:2px dashed var(--brand);border-radius:12px;font-size:15px;font-weight:600;color:var(--brand);z-index:100;pointer-events:none;letter-spacing:1px}

/* 裁剪框 */
.cropfr{position:absolute;border:2px dashed var(--brand);cursor:move;z-index:2;transition:none}
.cropfr.sh{box-shadow:0 0 0 9999px rgba(0,0,0,.65),0 0 0 1px rgba(0,225,255,.1)}

/* ===== 移动端菜单系统 ===== */
.menu-btn{display:none;position:fixed;top:7px;left:14px;z-index:400;width:30px;height:30px;border-radius:var(--r);border:none;background:var(--bg3);color:var(--text2);cursor:pointer;align-items:center;justify-content:center;transition:all .15s}
.menu-btn:hover{background:var(--bg4);color:var(--text)}
.menu-btn svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round;stroke-linejoin:round}
.side-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:250;backdrop-filter:blur(2px)}

/* 768px: 开始精简 header 右侧 */
@media(max-width:768px){
  #btnZoomOut,#btnZoomIn,#zoomValue{display:none}
  .hdr-r .sep:nth-of-type(3){display:none}
}

/* 960px: 移动端侧滑面板激活 */
@media(max-width:960px){
  .menu-btn{display:flex}
  .side{position:fixed;left:0;top:44px;height:calc(100vh - 44px);width:260px;z-index:300;transform:translateX(-105%);transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:4px 0 20px rgba(0,0,0,.5)}
  .side.open{transform:translateX(0)}
  .rside{position:fixed;right:0;top:44px;height:calc(100vh - 44px);width:280px;z-index:300;transform:translateX(105%);transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:-4px 0 20px rgba(0,0,0,.5)}
  .rside.open{transform:translateX(0)}
  .side-overlay.show{display:block}
  .hdr-l{margin-left:40px}
  .hdr-c{max-width:120px}
  .hdr-r{padding-right:42px}
  #btnCopy{display:none}
  .hdr-r .sep:nth-of-type(2){display:none}
}

/* 768px: 进一步精简 */
@media(max-width:768px){
  .hdr-l span{font-size:13px;letter-spacing:0}
  .hdr-l svg{width:18px;height:18px}
  .hdr{padding:0 8px}
  .hdr-l{margin-left:36px}
  #btnRedo{display:none}
  #btnUndo{margin-left:2px}
  .btn-p{padding:5px 8px;font-size:11px}
  .btn-i{width:26px;height:26px}
}

/* 480px: 最小化 */
@media(max-width:480px){
  .side{width:85vw}
  .rside{width:85vw}
  .hdr-c{display:none}
  .hdr-l span{font-size:12px}
  .hdr-r{padding-right:38px}
  .tbtn{padding:10px 6px;font-size:11px;min-height:44px}
  .tbtn svg{width:18px;height:18px}
  .stitle{font-size:10px;padding:8px 12px 4px}
  .psec{padding:6px}
  /* 移动端属性面板优化 */
  .pr{display:flex;align-items:center;gap:6px;margin-bottom:10px;flex-wrap:wrap}
  .pr label{min-width:60px;font-size:11px}
  .pr input[type="range"]{flex:1;min-width:80px}
  .pickcol{padding:4px 6px;font-size:10px!important}
  .pv{min-width:52px;font-size:10px}
  /* 移动端触控优化 */
  .btn-p, .btn-s{min-height:36px;padding:6px 10px}
  .rps{gap:4px}
  .rp{padding:5px 8px;font-size:10px}
}

/* ===== 帮助系统 ===== */
.help-btn{position:fixed;right:20px;bottom:20px;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,#6366f1,#818cf8);color:#fff;font-size:22px;font-weight:700;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:1000;box-shadow:0 4px 14px rgba(99,102,241,0.4);transition:transform .2s,box-shadow .2s;user-select:none}
.help-btn:hover{transform:scale(1.08);box-shadow:0 6px 20px rgba(99,102,241,0.5)}
.help-btn:active{transform:scale(0.95)}
.help-modal{display:none;position:fixed;inset:0;z-index:1001;background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);align-items:center;justify-content:center}
.help-content{width:720px;max-width:92vw;height:82vh;background:var(--bg2);border-radius:14px;border:1px solid var(--border);box-shadow:0 20px 60px rgba(0,0,0,0.4);display:flex;flex-direction:column;overflow:hidden}
.help-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border)}
.help-header h2{font-size:17px;color:var(--text1)}
.help-close{width:34px;height:34px;border:none;border-radius:8px;background:var(--bg3);color:var(--text2);font-size:22px;cursor:pointer}
.help-close:hover{background:var(--hover);color:var(--text2)}
.help-body{flex:1;overflow-y:auto;padding:20px 24px}
.help-tabs{display:flex;gap:6px;margin-bottom:16px;border-bottom:1px solid var(--border);padding-bottom:10px}
.help-tab{padding:6px 10px;border-radius:4px;border:none;background:none;color:var(--text3);font-size:13px;cursor:pointer;transition:.2s}
.help-tab:hover{color:var(--text2);background:var(--bg3)}
.help-tab.active{color:#fff;background:var(--accent)}
.active-btn{color:#fff;background:var(--accent);display:inline-block;padding: 6px 14px;border-radius: 3px;border: 1px solid var(--accent);font-size: 12px; text-decoration: none; transition: .2s;}
.help-panel{display:none}
.help-panel.active{display:block}
.help-docs{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.help-doc-link{display:inline-block;padding:6px 14px;border-radius:8px;background:var(--bg3);border:1px solid var(--border);color:var(--text2);font-size:12px;text-decoration:none;transition:.2s}
.help-doc-link:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.help-table{width:100%;border-collapse:collapse;font-size:13px}
.help-table td{padding:7px 10px;border-bottom:1px solid rgba(255,255,255,0.05);color:var(--text2)}
.help-table td:first-child{width:200px;white-space:nowrap}
.help-table kbd{display:inline-block;padding:2px 8px;border-radius:5px;background:var(--bg3);border:1px solid var(--border);font-family:'SF Mono',monospace;font-size:12px;color:var(--text2)}
.help-tool-group{margin-bottom:14px}
.help-tool-group h4{font-size:13px;color:var(--text2);margin-bottom:6px;border-left:3px solid var(--accent);padding-left:8px}
.help-tool-group p{font-size:12px;color:var(--text2);line-height:1.7;margin-bottom:4px}
.help-tool-group b{color:var(--accent)}
.help-steps{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.help-step{display:flex;gap:12px;align-items:flex-start}
.step-num{width:28px;height:28px;border-radius:50%;flex-shrink:0;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.help-step h4{font-size:13px;color:var(--text2);margin-bottom:2px}
.help-step p{font-size:12px;color:var(--text2);line-height:1.6}
.help-body ul{margin:8px 0 12px 18px;font-size:12px;color:var(--text2);line-height:1.8}
.help-body h3{font-size:14px;color:var(--text2);margin:16px 0 8px}