:root{
  --ink:#172033;--muted:#5d687b;--line:#dce3ec;--bg:#f4f7fb;--card:#fff;
  --primary:#1769d2;--primary-dark:#0d4d9d;--primary-soft:#eaf3ff;--accent:#079b91;--ok:#087b59;--warn:#98500b;
  --radius:14px;--max:1160px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(circle at 50% -220px,#e5f4ff 0,rgba(229,244,255,0) 520px),var(--bg);color:var(--ink);font:16px/1.72 var(--font);text-rendering:optimizeLegibility}
a{color:var(--primary);text-decoration-color:rgba(23,105,210,.38);text-underline-offset:3px;transition:color .15s ease,background .15s ease,border-color .15s ease}
a:hover{color:var(--primary-dark);text-decoration-color:currentColor}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.site-head{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 4px 18px rgba(38,64,102,.055)}
.site-head .wrap{display:flex;align-items:center;gap:22px;min-height:68px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:850;font-size:22px;letter-spacing:.04em}
.logo:hover{color:var(--ink)}
.logo-img{display:block;flex:0 0 auto;width:40px;height:40px;aspect-ratio:1/1;object-fit:contain;border-radius:11px;box-shadow:0 5px 14px rgba(16,119,185,.2)}
.logo small{font-weight:500;font-size:12.5px;color:var(--muted);letter-spacing:0;margin-left:1px}
.nav{display:flex;flex-wrap:wrap;gap:2px 18px;margin-left:auto}
.nav a{color:#374257;text-decoration:none;font-size:15px;font-weight:560;padding:9px 1px;border-bottom:2px solid transparent}
.nav a:hover{color:var(--primary)}
.nav a:focus-visible{outline:3px solid rgba(23,105,210,.2);outline-offset:3px;border-radius:4px}
.nav-toggle{display:none;margin-left:auto;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit;cursor:pointer}
@media (max-width:760px){.nav-toggle{display:block}.nav{display:none;width:100%;flex-direction:column;padding-bottom:10px}.nav-open .nav{display:flex}}
main{padding:32px 0 60px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:10px}.crumbs a{color:var(--primary);font-weight:600}
h1{font-size:34px;font-weight:820;letter-spacing:-.025em;line-height:1.25;margin:0 0 12px}
h2{font-size:24px;font-weight:790;letter-spacing:-.015em;line-height:1.38;margin:40px 0 13px}
h3{font-size:18px;font-weight:760;margin:23px 0 7px}
.lead{font-size:17.5px;line-height:1.8;color:var(--muted);margin:0 0 22px;max-width:800px}
.hero{text-align:center;padding:34px 0 12px}
.hero h1{font-size:42px;background:linear-gradient(105deg,#172033 18%,#1769d2 68%,#079b91);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{margin:0 auto 20px}
.badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;font-size:13.5px;color:#46536a;margin-bottom:20px}
.badges span{padding:4px 10px;border:1px solid #d9e6ef;border-radius:999px;background:rgba(255,255,255,.82)}
.badges span::before{content:"✓ ";color:var(--ok);font-weight:700}
.ad-slot{position:relative;min-height:96px;margin:20px 0;padding:20px 10px 8px;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#fff}
.ad-label{position:absolute;top:5px;left:10px;color:#8a91a5;font-size:11px;line-height:1}
.ad-slot .adsbygoogle{min-height:68px}
/* dropzone */
.drop{background:#fff;border:2px dashed #b8c3e6;border-radius:16px;padding:26px 20px;text-align:center;transition:border-color .15s,background .15s}
.drop.over{border-color:var(--primary);background:var(--primary-soft)}
.drop p{margin:6px 0;color:var(--muted);font-size:15px}
.drop .row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 18px;border-radius:9px;border:1px solid var(--primary);background:var(--primary);color:#fff;font:700 15px var(--font);cursor:pointer;text-decoration:none;box-shadow:0 4px 10px rgba(23,105,210,.14)}
.btn:hover{background:var(--primary-dark);color:#fff}
.btn.ghost{background:#fff;color:var(--primary)}
.btn.ghost:hover{background:var(--primary-soft);color:var(--primary-dark)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.urlrow{display:flex;gap:8px;max-width:640px;margin:14px auto 0}
.urlrow input{flex:1;min-width:0;min-height:44px;border:1px solid #c8cfe0;border-radius:9px;padding:0 12px;font:15px var(--font)}
.preview{display:none;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;margin-top:14px;text-align:left}
.preview.on{display:flex;flex-wrap:wrap}
.preview img{width:120px;height:120px;object-fit:contain;background:#eef0f6;border-radius:10px}
.preview .pinfo{flex:1 1 240px;font-size:14px;color:var(--muted)}
.preview .pinfo b{color:var(--ink);font-size:15px;word-break:break-all}
.status{font-size:14px;margin-top:6px}
.status.err{color:#b42318}.status.ok{color:var(--ok)}
/* engines */
.groups{display:flex;flex-direction:column;gap:18px;margin-top:20px}
.group{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.group h2,.group h3{margin:0 0 4px;font-size:18px}
.group .gdesc{font-size:14px;color:var(--muted);margin:0 0 12px}
.egrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.eng{display:flex;flex-direction:column;align-items:flex-start;gap:2px;min-height:64px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fafbff;font:inherit;text-align:left;cursor:pointer;color:var(--ink);text-decoration:none}
.eng:hover{border-color:var(--primary);background:var(--primary-soft)}
.eng b{font-size:15px}
.eng small{font-size:12.5px;color:var(--muted);line-height:1.45}
.eng .tag{font-size:11px;padding:1px 6px;border-radius:4px;background:#fff1e6;color:var(--warn);margin-left:4px;font-weight:600}
.eng .tag.cn{background:#e7f6ef;color:var(--ok)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#151a2d;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;max-width:90vw;z-index:99;opacity:0;transition:opacity .2s;pointer-events:none}
.toast.on{opacity:1}
/* tools */
.tool{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-top:16px}
.tool .controls{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:flex-end;margin-bottom:14px}
.tool label{display:flex;flex-direction:column;gap:5px;font-size:14px;font-weight:600}
.tool select,.tool input[type=number]{min-height:42px;border:1px solid #c8cfe0;border-radius:8px;padding:0 10px;font:15px var(--font);background:#fff}
.tool input[type=range]{width:200px;accent-color:var(--primary)}
.kv{width:100%;border-collapse:collapse;font-size:14.5px}
.kv td{border-bottom:1px solid #eceff5;padding:8px 6px;vertical-align:top}
.kv td:first-child{color:var(--muted);width:34%}
.map{height:340px;border-radius:12px;margin:12px 0;border:1px solid var(--line)}
.split{display:flex;flex-wrap:wrap;gap:20px}.split>*{flex:1 1 320px;min-width:0}
.swatches{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.sw{border:1px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;background:#fff;font:inherit;padding:0;text-align:left}
.sw span{display:block;height:70px}
.sw code{display:block;padding:6px 8px;font:600 13px var(--mono)}
.sw small{display:block;padding:0 8px 6px;color:var(--muted);font-size:12px}
.results{display:flex;flex-direction:column;gap:10px}
.res{display:flex;flex-wrap:wrap;gap:12px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:10px}
.res img{width:72px;height:72px;object-fit:cover;border-radius:8px;background:#eef0f6}
.res .rinfo{flex:1 1 200px;font-size:14px}
.good{color:var(--ok);font-weight:700}
/* content */
.layout{display:flex;flex-wrap:wrap;gap:32px;margin-top:8px}
.content{flex:999 1 620px;min-width:0}
.aside{flex:1 1 250px;min-width:0}
.prose{max-width:780px}
.prose p,.prose li{color:#303a4e}
.prose a{font-weight:650;text-decoration:underline;text-decoration-thickness:1px}
.prose ol li,.prose ul li{margin:4px 0}
.prose table{border-collapse:collapse;width:100%;font-size:15px;margin:10px 0 18px}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.prose th{background:#eef1f8}
.tbl{overflow-x:auto}
.note{background:var(--primary-soft);border-radius:10px;padding:12px 14px;font-size:15px}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:14px;font-size:15px}
.side-box h3{margin:0 0 6px;font-size:16px}
.side-box ul{margin:0;padding-left:18px}.side-box a{font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--primary)}
.card b{display:block;font-size:16px;margin-bottom:2px}
.card span{font-size:14px;color:var(--muted)}
.faq h3{margin-top:18px}
.site-foot{border-top:1px solid var(--line);background:#fff;font-size:14px;color:var(--muted)}
.site-foot .wrap{display:flex;flex-wrap:wrap;gap:12px 36px;justify-content:space-between;padding:24px 20px}
.site-foot a{color:var(--muted)}
.site-foot nav{display:flex;flex-wrap:wrap;gap:6px 16px}
@media (max-width:600px){.site-head .wrap{gap:12px;min-height:62px}.logo{font-size:20px}.logo-img{width:36px;height:36px}.logo small{display:none}.hero{padding-top:24px}.hero .lead{font-size:16px}.badges{gap:6px}.badges span{padding:3px 8px}h1,.hero h1{font-size:28px}.urlrow{flex-direction:column}.tool{padding:14px}.map{height:260px}}

.searchbox{border-color:#c7d2fb;background:#fbfcff}
.sb-actions{display:flex;flex-wrap:wrap;gap:12px;margin:6px 0 4px}
.btn.big{min-height:54px;padding:0 28px;font-size:17px;border-radius:11px}
span.btn[aria-disabled]{background:#e6e9f2;border-color:#e6e9f2;color:#8a91a5;cursor:default}
.sb-note{font-size:13.5px;color:var(--muted);margin:6px 0 0}
.gdesc.ok{color:var(--ok);font-weight:600}
.sb-wait{display:flex;align-items:center;gap:10px;min-height:54px;font-size:15.5px;color:var(--ink)}
.spin{width:22px;height:22px;border:3px solid #cdd6f5;border-top-color:var(--primary);border-radius:50%;animation:dss-spin .8s linear infinite;flex:none}
@keyframes dss-spin{to{transform:rotate(360deg)}}
@media (max-width:600px){.sb-actions .btn{flex:1 1 140px}}
/* ===== 工作台：左图右功能 ===== */
.workspace{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start;margin-top:6px}
.ws-left{flex:1 1 300px;max-width:380px;position:sticky;top:16px}
.ws-right{flex:999 1 520px;min-width:0}
.ws-left .drop{padding:20px 14px}
.ws-left .urlrow{flex-direction:column}
.ws-left .preview{margin-top:12px;padding:12px}
.ws-left .preview.on{display:block}
.ws-left .preview img{width:100%;height:auto;max-height:340px;object-fit:contain;display:block}
.ws-left .preview .pinfo{margin-top:10px}
.ws-left .preview [data-reset]{width:100%;margin-top:10px}
.workspace:not(.ws-idle) .drop{padding:12px 14px}
.workspace:not(.ws-idle) .drop > p{display:none}
.ops{background:#fff;border:1px solid var(--line);border-radius:16px;padding:4px 18px}
.op-row{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid #eef0f5;align-items:flex-start}
.op-row:last-child{border-bottom:0}
.op-label{flex:0 0 72px;font-weight:700;font-size:15px;padding-top:9px}
.op-search .op-label{color:var(--primary)}
.op-items{flex:1;display:flex;flex-wrap:wrap;gap:8px;align-items:center;min-width:0}
.op{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid #d5dbea;border-radius:9px;background:#f7f9ff;font:500 14.5px var(--font);color:var(--ink);cursor:pointer;text-decoration:none}
.op:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}
.op.big{min-height:48px;padding:0 22px;font-size:16px;font-weight:700}
.op.go{background:var(--primary);border-color:var(--primary);color:#fff}
.op.go:hover{background:var(--primary-dark);color:#fff}
.op[aria-disabled]{background:#eef0f5;border-color:#eef0f5;color:#9aa1b2;cursor:default}
.op-hint{font-size:13.5px;color:var(--muted)}
.op-hint.ok{color:var(--ok)}.op-hint.err{color:#b42318;font-weight:600}
.op-wait{display:flex;align-items:center;gap:10px;min-height:48px;font-size:15px}
.op-more{margin-left:auto;font-size:13px;font-weight:650;color:var(--primary)}
.ws-idle .ops .op:not(.big){opacity:.55}
.ws-right .tool{margin-top:14px}
.res .btn{min-height:40px}
@media (max-width:860px){.ws-left{position:static;max-width:none}}
@media (max-width:600px){.op-row{flex-direction:column;gap:8px}.op-label{flex:none;padding-top:0}.op.big{flex:1 1 140px;justify-content:center}.op-more{margin-left:0}}
/* ===== 图片素材搜索 ===== */
.kw{margin-top:28px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 22px 18px;box-shadow:0 8px 26px rgba(38,64,102,.045)}
.kw h2{margin:0 0 4px}
.kw h3{margin:22px 0 2px;font-size:17px}
.kw-head p{margin:0 0 12px;color:var(--muted);font-size:15px}
.kw-bar input{width:100%;min-height:50px;border:2px solid var(--primary);border-radius:11px;padding:0 14px;font:16px var(--font)}
.kgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;margin-top:8px}
.kcard{border:1px solid var(--line);border-radius:12px;padding:13px;background:#fbfcff;display:flex;flex-direction:column;gap:7px;margin:0;transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}
.kcard:hover,.kcard:focus-within{border-color:#abc9ee;box-shadow:0 7px 18px rgba(38,64,102,.075);transform:translateY(-1px)}
.kt{display:flex;align-items:center;gap:8px;min-width:0}
.kt i{flex:none;display:inline-grid;place-items:center;width:28px;height:28px;border-radius:7px;background:var(--primary-soft);color:var(--primary);font-style:normal;font-weight:700;font-size:14px}
.kt b{font-size:15.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kbadge{margin-left:auto;flex:none;font-size:11.5px;padding:1px 7px;border-radius:5px;background:#fff1e6;color:var(--warn)}
.kcard p{margin:0;font-size:13px;color:var(--muted);line-height:1.5;min-height:39px}
.krow{display:flex;gap:6px}
.krow input{flex:1;min-width:0;min-height:40px;border:1px solid #c8cfe0;border-radius:8px;padding:0 10px;font:14.5px var(--font)}
.krow .op{flex:none;min-height:40px;white-space:nowrap}
.kw-note{margin:18px 0 0;font-size:13px;color:var(--muted);line-height:1.6;border-top:1px solid #eef0f5;padding-top:12px}
.kw .gdesc{margin:2px 0 4px;font-size:14px;color:var(--muted)}
.channel-block{scroll-margin-top:18px;margin-top:24px;padding-top:2px;border-top:1px solid #eef0f5}
.channel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:10px}
.channel-grid a{display:flex;flex-direction:column;min-width:0;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:#fafbff;color:var(--ink);text-decoration:none}
.channel-grid a:hover{border-color:var(--primary);background:var(--primary-soft)}
.channel-grid b{font-size:14.5px}.channel-grid span{font-size:12.5px;color:var(--muted)}
@media (max-width:800px){.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:430px){.channel-grid{grid-template-columns:1fr}}