*{box-sizing:border-box}body{margin:0;font:14px/1.4 system-ui,sans-serif;background:#120b1f;color:#eee}
header{display:flex;align-items:center;gap:12px;padding:14px 24px;border-bottom:1px solid #2c1f45}h1{font-size:18px;margin:0;flex:1}
.pill{font-size:12px;color:#b9a6e0;border:1px solid #4a3470;border-radius:99px;padding:3px 10px}
button{background:#2a1c44;color:#eee;border:1px solid #4a3470;border-radius:8px;padding:6px 12px;cursor:pointer}button.on{background:#7b4dff;border-color:#7b4dff}button:disabled{opacity:.4;cursor:not-allowed}
main{display:grid;grid-template-columns:minmax(300px,1fr) 1.3fr;gap:24px;padding:24px}@media(max-width:860px){main{grid-template-columns:1fr}}
#drop{display:flex;align-items:center;justify-content:center;min-height:260px;border:2px dashed #4a3470;border-radius:12px;cursor:pointer;overflow:hidden}
#drop.has{min-height:60px}#imageCanvas{display:block;margin-top:8px;border-radius:12px;max-width:100%;cursor:crosshair}
.hint{color:#9a8bb8;font-size:12px}.ctrl{display:flex;gap:20px;flex-wrap:wrap;margin-bottom:12px}#wheel{border-radius:50%;cursor:pointer}
.modes{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}.ctrl label{display:block;margin:8px 0}input[type=range]{width:200px;vertical-align:middle}
.scheme h4{margin:14px 0 6px;font-weight:500;color:#cbbcf0}.row{display:flex;gap:8px;flex-wrap:wrap}
.sw{width:108px;background:#1c1330;border-radius:8px;overflow:hidden;cursor:pointer;font-size:11px}.sw i{display:block;height:56px}.sw b,.sw span{display:block;padding:0 8px}.sw b{padding-top:6px}.sw span{color:#B8B4CC;font-size:11px}.sw span:last-child{padding-bottom:6px}
#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#7b4dff;padding:8px 16px;border-radius:8px;opacity:0;transition:opacity .3s}
.sw.empty i{background:#2a2438}.sw.empty{cursor:default}
#wheel{touch-action:none}.cw{position:relative;display:inline-block;max-width:100%}#selCanvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;margin-top:0}#imageCanvas.rc{cursor:cell}
#steps{margin:8px 0;color:#9a8bb8}#steps span.on{color:#fff;font-weight:600}.sep{width:8px}#drop.over{border-color:#7b4dff;background:#1c1330}

#schemes.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(420px,1fr));gap:8px}.sw{position:relative}.sw .lk{position:absolute;top:2px;right:4px;text-decoration:none;font-size:11px;opacity:.35;cursor:pointer}.sw:hover .lk,.sw .lk.on{opacity:1}

.imgpal .ipbar{display:flex;height:44px;border-radius:10px;overflow:hidden;margin:12px 0 10px;gap:2px}.imgpal .ipbar i{min-width:4px}.imgpal .sw b{font-size:14px}
#dominant .row{flex-wrap:nowrap;overflow-x:auto}#dominant .sw{flex:0 0 92px;width:92px}.expg{margin-top:12px;padding:8px 10px;border:1px solid #3a2f55;border-radius:8px}.expg h5{margin:0 0 6px;font-size:12px;color:#cbbcf0;font-weight:500}
.imgpal .row{flex-wrap:nowrap;overflow-x:auto}.imgpal .sw{flex:0 0 92px}.expg h5{flex-basis:100%}.expg{flex-wrap:wrap}
#dominant .row,.imgpal .row{-webkit-mask-image:linear-gradient(90deg,#000 85%,transparent);mask-image:linear-gradient(90deg,#000 85%,transparent);padding-right:40px}
.gen{background:#21173a;border:1px solid #5b3fd6;border-radius:12px;padding:10px 12px;margin-bottom:10px}.gen h5{margin:0 0 8px;font-size:13px;color:#e4dcff;font-weight:600}.gen .modes button{font-size:14px;padding:8px 14px}
.pv .pvc{background:#111;border-radius:10px;padding:10px;text-align:center}.pv .pvc canvas{max-width:100%;max-height:70vh;height:auto;width:auto}.pv button.pri{background:#7B4DFF;color:#fff}
main{grid-template-columns:1fr 1fr;gap:32px;padding:24px}.left{position:relative}.cw{display:block}#imageCanvas{width:100%;height:auto;margin-top:0}
#drop.has{position:absolute;left:0;right:0;top:0;min-height:0;height:44px;z-index:3;opacity:0;transition:opacity .2s;background:rgba(18,11,31,.75);border-radius:12px 12px 0 0}.left:hover #drop.has{opacity:1}
.left>*+*,.right>*+*{margin-top:24px}.imgpal .ipbar{margin:0 0 12px}
.gen{margin-top:24px}.gen .seg{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid #5b3fd6;border-radius:10px;overflow:hidden;margin-bottom:12px}.gen .seg button{border:0;border-radius:0;padding:10px 0;font-size:14px}.gen .seg button+button{border-left:1px solid #5b3fd6}
.gen .gp{min-height:28px;margin-bottom:12px}.gen .big{width:100%;padding:12px;font-size:15px;font-weight:600}.gen .dd{display:flex;gap:8px;align-items:center;margin-top:12px;font-size:12px;color:#9a8bb8}.gen .dd button{padding:4px 10px;font-size:12px}
#pvm{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:50}.pvbox{background:#1a1030;border-radius:14px;padding:16px;max-width:92vw;max-height:92vh;display:flex;flex-direction:column}.pvbar{display:flex;gap:8px;align-items:center;margin-bottom:12px}
.pvc{overflow:auto;background:repeating-conic-gradient(#2a2438 0 25%,#221c30 0 50%) 0 0/20px 20px;border-radius:10px;text-align:center}.pvc canvas{max-width:80vw;max-height:76vh;width:auto;height:auto;display:block;margin:auto}
main{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.right,.left{min-width:0}#imageCanvas{max-height:72vh;object-fit:contain;background:#0d0818;border-radius:12px}
.gen .seg{grid-template-columns:repeat(5,1fr)}.gen .gp{min-height:0;display:flex;align-items:center;gap:12px}.stp{display:inline-flex;align-items:center;border:1px solid #5b3fd6;border-radius:8px;overflow:hidden}.stp button{border:0;border-radius:0;padding:4px 12px}.stp b{min-width:28px;text-align:center}
.pvc{background-color:#f4f2f7!important;background-image:linear-gradient(45deg,#e6e2ec 25%,transparent 25%,transparent 75%,#e6e2ec 75%),linear-gradient(45deg,#e6e2ec 25%,transparent 25%,transparent 75%,#e6e2ec 75%)!important;background-size:16px 16px!important;background-position:0 0,8px 8px!important}#imageCanvas{max-height:none}
.stp button:disabled{opacity:.35;cursor:default}.pvbar .stp{margin-left:12px}
#dropOv{position:fixed;inset:0;z-index:99;display:none;align-items:center;justify-content:center;background:rgba(18,11,31,.78);border:3px dashed #7b4dff;font-size:28px;color:#fff;pointer-events:none}#dropOv.on{display:flex}#pasteMenu{position:fixed;z-index:100;background:#241a3a;border:1px solid #5b3fd6;border-radius:8px;padding:8px 14px;cursor:pointer;font-size:13px}#pasteMenu:hover{background:#33255a}.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);z-index:101;background:#241a3a;border:1px solid #5b3fd6;padding:8px 16px;border-radius:8px;font-size:13px}
#dropOv{background:rgba(0,0,0,.7);border:0;flex-direction:column;gap:8px}#dropOv::before{content:'';position:absolute;inset:16px;border:2px dashed #7b4dff;border-radius:16px}#dropOv small{font-size:12px;color:rgba(255,255,255,.6)}

/* left image: full width, natural aspect, scroll if taller than viewport remainder; no letterbox */
.cw{display:block!important;background:transparent!important;border-radius:12px;width:100%;overflow-x:hidden;overflow-y:auto;position:relative;scrollbar-width:thin;scrollbar-color:#3a2a55 transparent}
.cw::-webkit-scrollbar{width:6px}.cw::-webkit-scrollbar-thumb{background:#3a2a55;border-radius:3px}.cw::-webkit-scrollbar-track{background:transparent}
#imageCanvas{width:100%!important;height:auto!important;max-width:100%!important;max-height:none!important;object-fit:unset!important;background:transparent!important;display:block;border-radius:12px;margin:0}
#selCanvas{display:block;pointer-events:none}

.stage{display:block;width:100%}
.left.port .stage{display:flex;align-items:flex-start;gap:12px}
.left.port .stage .cw{flex:0 0 60%;width:60%;max-width:60%}
.left.port #dominant{flex:1 1 40%;min-width:0;margin-top:0!important}
.left.port #dominant .scheme{margin:0}
.left.port #dominant .row{flex-direction:column;flex-wrap:nowrap;overflow-x:hidden;overflow-y:auto;max-height:inherit;-webkit-mask-image:none;mask-image:none;padding-right:0;gap:8px}
.left.port #dominant .sw{flex:0 0 auto;width:100%}
.left:not(.port) #dominant .row{flex-direction:row}

/* —— KnotColor official glass-b chrome (layout unchanged) —— */
:root{
  --kc-bg:#100f13;--kc-surface:#19171d;--kc-raised:#211e25;
  --kc-line:rgba(241,237,249,.12);--kc-text:#f2eff5;--kc-secondary:#c4becb;--kc-muted:#9e97a5;
  --kc-violet:#7c63ff;--kc-violet-soft:#c8bcff;
  --kc-radius-control:10px;--kc-radius-card:16px;
  --glass-ink:#f5f1ff;--glass-muted:#c1b8d1;--glass-focus:#d2bcff;
  --glass-surface:rgba(37,29,51,.76);--glass-edge:rgba(225,211,255,.24);
  --glass-ease:cubic-bezier(.16,1,.3,1);--kc-ease:cubic-bezier(.22,1,.36,1);
  --pri-grad:linear-gradient(140deg,#815bd6,#6541b5);
  --card-grad:linear-gradient(140deg,rgba(100,81,124,.28),rgba(39,31,52,.86) 58%,rgba(65,48,87,.54));
  --hdr-grad:linear-gradient(120deg,rgba(180,156,220,.16),rgba(24,18,35,.52) 52%,rgba(115,87,157,.17));
}
html{color-scheme:dark;background-color:#100d19;
  background-image:radial-gradient(ellipse 80vw 70vh at 14% 10%,rgba(109,69,184,.25),transparent 75%),radial-gradient(ellipse 65vw 60vh at 88% 28%,rgba(67,91,139,.16),transparent 78%),linear-gradient(145deg,#100d19,#171020 54%,#0d111b);
  background-attachment:fixed;background-repeat:no-repeat}
body{margin:0;font:14px/1.55 Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:transparent!important;color:var(--glass-ink)}
.site-header,header.site-header{
  display:flex;align-items:center;gap:14px;height:64px;padding:0 max(24px,calc((100% - 1200px)/2));
  border:1px solid rgba(232,219,255,.24)!important;border-bottom:1px solid var(--kc-line)!important;border-radius:0!important;
  background:var(--hdr-grad)!important;
  backdrop-filter:blur(10px) saturate(130%);-webkit-backdrop-filter:blur(10px) saturate(130%);
  box-shadow:inset 0 1px 0 #ffffff25,inset 0 -1px 0 #ffffff08;
  position:sticky;top:0;z-index:40
}
.site-header .brand{display:inline-flex;align-items:center;gap:8px;color:var(--glass-ink)!important;text-decoration:none;font-weight:600;font-size:15px;letter-spacing:0}
.site-header .brand img{width:28px;height:28px;border-radius:8px;display:block}
.site-header nav{display:flex;gap:clamp(12px,1.8vw,24px);margin-right:auto}
.site-header nav a{color:var(--glass-ink);text-decoration:none;font-size:14px;transition:color .16s var(--kc-ease)}
.site-header nav a:hover{color:var(--kc-violet-soft)}
.site-header h1{display:none}
.pill{font-size:12px;color:var(--kc-violet-soft);border:1px solid var(--glass-edge);border-radius:99px;padding:3px 10px;background:rgba(255,255,255,.04)}
.language-switch,#lang{min-width:36px;min-height:36px;border-radius:8px;padding:6px 10px;font-weight:600;
  background:linear-gradient(140deg,#ffffff0d,#ffffff04);border:1px solid var(--glass-edge);color:var(--glass-ink);
  box-shadow:inset 0 1px 0 #ffffff12}
button{background:linear-gradient(140deg,#ffffff0d,#ffffff04);color:var(--glass-ink);border:1px solid var(--glass-edge);
  border-radius:var(--kc-radius-control);padding:6px 12px;cursor:pointer;
  transition:background-color .22s ease,border-color .22s ease,box-shadow .25s ease,transform .3s var(--glass-ease)}
button:hover{border-color:#cfb7ff88;box-shadow:inset 0 1px 0 #ffffff23,0 5px 16px #08051038}
button.on,button.pri,.pv button.pri,.gen .big{
  background:var(--pri-grad)!important;border-color:transparent!important;color:#fff!important;
  box-shadow:0 8px 18px #7c63ff33}
button:disabled{opacity:.4;cursor:not-allowed;transform:none!important}
button:focus-visible,a:focus-visible{outline:2px solid var(--glass-focus)!important;outline-offset:4px}
.hint,#steps,.gen .dd{color:var(--glass-muted)!important}
#steps span.on{color:var(--glass-ink);font-weight:600}
.scheme h4,.expg h5,.gen h5{color:var(--kc-violet-soft)!important;font-weight:600;letter-spacing:-.02em}
.sw{background:var(--card-grad)!important;border:1px solid var(--glass-edge);border-radius:12px;
  box-shadow:inset 0 1px 0 #ffffff1c,0 8px 22px #08051028}
.sw span{color:var(--kc-secondary)!important}
.sw.empty i{background:var(--kc-raised)}
#drop{border:2px dashed rgba(225,211,255,.35);border-radius:var(--kc-radius-card);color:var(--glass-muted);
  background:linear-gradient(138deg,rgba(240,228,255,.08),rgba(137,106,177,.06))}
#drop.over,#dropOv::before{border-color:var(--kc-violet)!important}
#drop.has{background:rgba(16,15,19,.75);border-radius:var(--kc-radius-card) var(--kc-radius-card) 0 0}
.gen,.expg,.pvbox,#pasteMenu,.toast{
  background:var(--card-grad)!important;border:1px solid var(--glass-edge)!important;
  border-radius:var(--kc-radius-card)!important;
  box-shadow:inset 0 1px 0 #ffffff1c,inset 0 -1px 0 #ffffff06,0 16px 42px #08051030!important;
  color:var(--glass-ink)}
.gen .seg,.stp{border:1px solid var(--glass-edge)!important;border-radius:12px;overflow:hidden;
  background:linear-gradient(120deg,#ffffff09,#ffffff02);box-shadow:inset 0 1px 0 #ffffff0b}
.gen .seg button,.stp button{border-radius:0;border:0;background:transparent}
.gen .seg button+button,.stp button+button{border-left:1px solid var(--glass-edge)}
.gen .seg button.on,.modes button.on{background:linear-gradient(145deg,#c5a7ff42,#9a77ef28)!important;border-color:#ddc9ff66!important;color:#fff!important;
  box-shadow:inset 0 1px 0 #ffffff40,0 5px 14px #09051230}
#toast{background:var(--pri-grad)!important;border:0;color:#fff}
.cw{border-radius:var(--kc-radius-card);scrollbar-color:rgba(198,180,230,.35) transparent}
.cw::-webkit-scrollbar-thumb{background:rgba(198,180,230,.35)}
#imageCanvas{border-radius:var(--kc-radius-card)}
#pvm{background:rgba(8,5,16,.72);backdrop-filter:blur(8px)}
@supports not (backdrop-filter:blur(1px)){.site-header,header.site-header{background:#292135!important}}