:root{
  --blue:#0868f5;
  --blue2:#0b7dff;
  --blue-dark:#0b2b68;
  --text:#0b1f49;
  --muted:#667797;
  --line:#dbe8fb;
  --soft:#f5f9ff;
  --card:#ffffff;
  --shadow:0 12px 32px rgba(11, 72, 150, .10);
  --radius:16px;
  --max:1360px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;min-height:100%;font-family:"Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--text);background:#fff;}
a{text-decoration:none;color:inherit}
button,select,input{font-family:inherit}
img{max-width:100%;display:block}
.page{min-height:100vh;overflow-x:hidden;background:linear-gradient(180deg,#f9fcff 0,#fff 55%)}
.container{width:min(var(--max), calc(100vw - 64px));margin:0 auto}
.tools-header{height:80px;background:rgba(255,255,255,.96);border-bottom:1px solid #e5edf8;box-shadow:0 4px 16px rgba(17,56,112,.06);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
.tools-header .inner{height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand-mark{width:58px;height:58px;object-fit:contain;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;gap:4px;min-width:0}
.brand-title{font-size:28px;line-height:1;font-weight:900;letter-spacing:.5px;color:#101828;white-space:nowrap}
.brand-subtitle{font-size:14px;line-height:1;color:#5d6a7c;white-space:nowrap;letter-spacing:.5px}
.nav{display:flex;align-items:center;gap:58px;font-size:17px;font-weight:800;color:#111c3d;white-space:nowrap}
.nav a{position:relative;padding:26px 0;color:#15213c}
.nav a.active,.nav a:hover{color:var(--blue)}
.nav a.active::after{content:"";position:absolute;left:2px;right:2px;bottom:8px;height:4px;background:var(--blue);border-radius:99px}
.hero-tools{position:relative;overflow:hidden;background:linear-gradient(110deg,#eef7ff 0%,#f7fbff 45%,#eef6ff 100%);border-bottom:1px solid #e6f0ff;}
.hero-tools::before{content:"";position:absolute;inset:0;background:radial-gradient(620px 300px at 82% 50%,rgba(54,132,255,.18),transparent 65%),radial-gradient(550px 280px at 25% 44%,rgba(100,180,255,.12),transparent 70%);pointer-events:none}
.hero-tools .bg-line{position:absolute;inset:auto 0 0 0;height:170px;opacity:.62;background:linear-gradient(170deg,transparent 0 38%,rgba(62,139,255,.12) 38% 40%,transparent 40% 100%)}
.hero-tools .inner{position:relative;min-height:330px;display:grid;grid-template-columns:minmax(0, 1.05fr) minmax(460px,.9fr);align-items:center;gap:52px;padding:48px 0 34px}
.hero-title{font-size:42px;line-height:1.12;margin:0 0 18px;font-weight:900;letter-spacing:.5px;color:#061a3f}
.hero-copy{font-size:18px;line-height:1.8;margin:0 0 25px;color:#263a5f;font-weight:500}
.search-box{width:min(520px,100%);height:54px;background:#fff;border:1px solid #d7e6fb;border-radius:12px;box-shadow:0 8px 24px rgba(34,88,160,.08);display:flex;align-items:center;gap:13px;padding:0 18px;color:#8795ad;font-size:16px}
.search-box::before{content:"⌕";font-size:30px;line-height:1;color:#7c8ca8;transform:rotate(-15deg)}
.feature-card{min-height:230px;background:rgba(255,255,255,.92);border:1px solid #e0ecfb;border-radius:22px;box-shadow:var(--shadow);display:grid;grid-template-columns:1.05fr .92fr;align-items:center;gap:14px;padding:28px 28px 28px 30px;position:relative;overflow:hidden}
.feature-info{display:grid;grid-template-columns:88px minmax(0,1fr);column-gap:20px;align-items:start}.tool-icon{width:72px;height:72px;border-radius:18px;display:grid;place-items:center;font-size:16px;font-weight:900;color:#fff;position:relative;box-shadow:0 10px 24px rgba(8,104,245,.18)}.tool-icon::before{content:"";width:40px;height:48px;border:4px solid currentColor;border-radius:5px 12px 5px 5px;background:rgba(255,255,255,.16);position:absolute}.tool-icon span{position:relative;z-index:2;display:inline-flex;align-items:center;justify-content:center;height:24px;min-width:44px;padding:0 8px;border-radius:5px;background:currentColor;color:#fff;filter:brightness(.96);font-size:14px;box-shadow:0 3px 10px rgba(0,0,0,.08)}.icon-cad{background:linear-gradient(135deg,#eef6ff,#dbeaff);color:#0b66e9}.icon-cad span{background:#0b66e9}.icon-shp{background:linear-gradient(135deg,#e8fffb,#d9f7f0);color:#15b8a6}.icon-shp span{background:#15b8a6}.icon-kml{background:linear-gradient(135deg,#f8efff,#eadfff);color:#8b3df0}.icon-kml span{background:#8b3df0}.icon-json{background:linear-gradient(135deg,#fff6e8,#ffead2);color:#ef8b12}.icon-json span{background:#ef8b12}.feature-card h2{font-size:28px;line-height:1.2;margin:0 0 8px;color:#071d4a}.badge{display:inline-flex;align-items:center;justify-content:center;margin-left:8px;height:26px;padding:0 10px;border-radius:99px;background:var(--blue);color:#fff;font-size:14px;font-weight:800;vertical-align:middle}.feature-card p{font-size:16px;line-height:1.8;color:#405477;margin:0 0 20px}.primary-btn{display:inline-flex;align-items:center;justify-content:center;height:48px;min-width:178px;border-radius:9px;border:0;background:linear-gradient(135deg,#0968f6,#075bd8);color:#fff;font-size:17px;font-weight:900;box-shadow:0 10px 20px rgba(8,104,245,.20);cursor:pointer}.primary-btn .arr{font-size:25px;margin-left:14px;line-height:1}.map-art{height:170px;position:relative}.map-art::before{content:"";position:absolute;width:200px;height:118px;left:8px;top:36px;border-radius:24px;transform:rotate(-9deg);background:linear-gradient(145deg,rgba(255,255,255,.4),rgba(153,198,255,.18));border:2px solid rgba(91,151,255,.28);box-shadow:0 28px 36px rgba(58,120,210,.12)}.map-art::after{content:"";position:absolute;width:40px;height:40px;left:104px;top:38px;border-radius:50% 50% 50% 0;background:#2f80ff;transform:rotate(-45deg);box-shadow:0 9px 24px rgba(8,104,245,.25)}.map-art .dot{position:absolute;left:120px;top:52px;width:14px;height:14px;background:#fff;border-radius:50%;z-index:2}.map-art .path{position:absolute;left:66px;top:92px;width:105px;height:34px;border-bottom:3px dashed rgba(8,104,245,.46);border-radius:0 0 80px 80px;transform:rotate(-8deg)}.section{padding:28px 0}.section-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 18px}.section-title{font-size:24px;font-weight:900;color:#111827;margin:0;display:flex;align-items:center;gap:12px}.section-title::before{content:"";width:5px;height:22px;background:var(--blue);border-radius:99px}.more-link{font-size:16px;color:var(--blue);font-weight:800}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px 20px}.tool-card{min-height:148px;background:#fff;border:1px solid #e1ebf7;border-radius:14px;box-shadow:0 6px 20px rgba(13,45,93,.05);display:grid;grid-template-columns:86px minmax(0,1fr);gap:10px;align-items:center;padding:20px;position:relative;transition:.18s ease}.tool-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(13,45,93,.1)}.tool-card.recommend{border:2px solid var(--blue)}.star{position:absolute;right:0;top:0;width:34px;height:34px;background:#0b66e9;color:#fff;border-radius:0 12px 0 12px;display:grid;place-items:center;font-size:18px}.tool-card h3{margin:0 0 7px;font-size:20px;line-height:1.25;color:#111827}.tool-card p{margin:0 0 12px;color:#4d607d;font-size:14px;line-height:1.65}.small-btn{display:inline-flex;align-items:center;justify-content:center;height:30px;min-width:92px;padding:0 14px;border:1px solid #9ec4ff;border-radius:5px;color:#0b66e9;background:#fafdff;font-size:14px;font-weight:800}.round-icon{width:72px;height:72px;border-radius:18px;display:grid;place-items:center}.globe{background:#e8fff3;color:#12b76a}.globe::before{content:"◎";font-size:54px;font-weight:900}.pipe{background:#eaf2ff;color:#0b66e9}.pipe::before{content:"┳";font-size:52px;font-weight:900}.cube{background:#f2e9ff;color:#8d41ed}.cube::before{content:"◇";font-size:58px;font-weight:900;transform:rotate(45deg)}.stack{background:#fff2df;color:#f28a0c}.stack::before{content:"▰";font-size:46px;filter:drop-shadow(0 -12px 0 currentColor) drop-shadow(0 12px 0 currentColor)}.recommend-row{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.rec-card{height:76px;background:#fff;border:1px solid #e1ebf7;border-radius:12px;box-shadow:0 6px 18px rgba(13,45,93,.05);display:grid;grid-template-columns:42px 58px minmax(0,1fr) 28px;align-items:center;gap:10px;padding:12px 18px}.rec-no{width:32px;height:32px;border-radius:7px;background:#0b66e9;color:#fff;display:grid;place-items:center;font-size:20px;font-weight:900}.rec-no.green{background:#12b76a}.rec-no.cyan{background:#14b8b6}.rec-mini{width:46px;height:46px;border-radius:12px}.rec-card strong{display:block;font-size:17px;margin-bottom:3px}.rec-card span{display:block;color:#52627d;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chev{color:#7b8aa6;font-size:28px}.contact-strip{width:min(var(--max), calc(100vw - 48px));margin:18px auto 8px;background:linear-gradient(135deg,#0868f5 0%,#0b7dff 58%,#0466e9 100%);border-radius:10px;min-height:104px;color:#fff;display:grid;grid-template-columns:1.25fr 1.05fr 170px;gap:26px;align-items:center;padding:18px 28px;box-shadow:0 12px 26px rgba(8,104,245,.22)}.contact-left{display:grid;grid-template-columns:72px minmax(0,1fr);align-items:center;gap:20px}.phone-circle{width:62px;height:62px;border-radius:50%;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:36px}.contact-left h2{margin:0 0 4px;font-size:26px;line-height:1.2}.contact-left p{margin:0;font-size:13px;line-height:1.7;opacity:.96}.contact-mid{display:grid;grid-template-columns:1fr 1fr;gap:10px 20px;border-left:1px solid rgba(255,255,255,.25);padding-left:24px}.contact-item{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;white-space:nowrap}.contact-item.wide{grid-column:1/-1}.contact-item i{font-style:normal;font-size:22px}.site-btn{height:48px;border-radius:8px;background:#fff;color:#075bd8;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:900;font-size:16px;box-shadow:0 8px 18px rgba(0,0,0,.08)}.legal{width:min(var(--max), calc(100vw - 64px));margin:0 auto 8px;display:flex;justify-content:space-between;gap:18px;align-items:center;color:#6b7280;font-size:14px}.legal-right{display:flex;gap:24px;align-items:center}.tool-page .main-area{position:relative;overflow:hidden;background:linear-gradient(110deg,#f2f8ff 0,#f8fbff 52%,#eef6ff 100%);padding:36px 0 12px;border-bottom:1px solid #e6f0ff}.tool-page .main-area::after{content:"";position:absolute;right:42px;top:20px;width:380px;height:210px;background:radial-gradient(circle at 65% 45%,rgba(8,104,245,.18),transparent 18%),linear-gradient(145deg,rgba(255,255,255,.15),rgba(55,140,255,.08));border:2px solid rgba(8,104,245,.18);border-radius:28px;transform:rotate(-9deg);pointer-events:none}.tool-page .main-head{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:40px;align-items:start}.tool-title{font-size:46px;letter-spacing:1px;line-height:1.12;margin:0 0 12px;color:#061744;font-weight:950}.tool-sub{font-size:18px;color:#273a5d;margin:0 0 12px;font-weight:600}.privacy-note{display:flex;align-items:center;gap:8px;color:#0868f5;font-size:15px;font-weight:800}.privacy-note::before{content:"♥";font-size:18px}.step-flow{display:grid;grid-template-columns:1fr 28px 1fr 28px 1fr;gap:18px;align-items:center;margin:22px 0 14px;position:relative;z-index:2}.flow-card{height:78px;background:#fff;border:1px solid #d7e6fb;border-radius:9px;display:grid;grid-template-columns:68px minmax(0,1fr);align-items:center;padding:0 22px;box-shadow:0 8px 20px rgba(13,45,93,.04)}.flow-no{width:42px;height:42px;background:#0868f5;color:#fff;border-radius:50%;display:grid;place-items:center;font-size:20px;font-weight:900}.flow-card strong{font-size:18px;display:block}.flow-card span{font-size:14px;color:#607391}.flow-arr{text-align:center;color:#8493aa;font-size:34px}.work-grid{display:grid;grid-template-columns:minmax(0, 1fr) 382px;gap:18px;margin-top:8px}.panel{background:rgba(255,255,255,.72);border:1px solid #dce9fb;border-radius:10px;box-shadow:0 6px 18px rgba(13,45,93,.04);padding:16px 18px}.panel + .panel{margin-top:8px}.panel-title{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;margin:0 0 12px}.num{width:28px;height:28px;background:#0868f5;border-radius:50%;color:#fff;display:grid;place-items:center;font-weight:900}.upload-row{display:grid;grid-template-columns:minmax(0,1fr) 132px;gap:18px;align-items:center}.dropzone{height:76px;border:1.5px dashed #7cb5ff;border-radius:7px;display:grid;place-items:center;text-align:center;background:rgba(255,255,255,.54);cursor:pointer}.dropzone strong{display:block;font-size:16px}.dropzone span{display:block;color:#657895;margin-top:6px;font-size:14px}.read-btn{height:48px;border:0;border-radius:7px;background:linear-gradient(135deg,#0868f5,#075bd8);color:#fff;font-size:17px;font-weight:900}.file-line{margin-top:12px;color:#53667f;font-size:14px}.form-row{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:18px}.field label{display:block;font-weight:900;margin-bottom:6px}.field select{width:100%;height:38px;border:1px solid #cfe0f7;border-radius:5px;background:#fff;color:#344767;padding:0 12px}.scope-fixed{height:38px;border:1px solid #cfe0f7;border-radius:5px;background:#f7fbff;color:#0b3d91;padding:0 12px;display:flex;align-items:center;font-weight:900}
.hint{font-size:12.5px;color:#64748b;line-height:1.6;margin-top:8px}.info-row{display:grid;grid-template-columns:1.35fr .85fr;gap:12px;margin-top:10px}.info-box{min-height:72px;background:#f9fcff;border:1px solid #dce9fb;border-radius:7px;display:grid;grid-template-columns:58px 1fr;align-items:center;padding:10px 12px;overflow:hidden}.info-icon{width:38px;height:38px;border-radius:50%;background:#e8f2ff;color:#0868f5;display:grid;place-items:center;font-size:24px}.info-box strong{display:block}.info-box span{display:block;color:#607391;line-height:1.45;white-space:normal;word-break:break-word;overflow-wrap:anywhere}.convert-grid{display:grid;grid-template-columns:.9fr 1fr;gap:24px}.result-box{min-height:112px;background:#f9fcff;border:1px solid #dce9fb;border-radius:7px;display:grid;place-items:center;text-align:center;color:#6b7280}.result-box strong{display:block;color:#263a5d;margin-bottom:6px}.op-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}.outline-btn{height:38px;background:#fff;border:1px solid #b6d3ff;border-radius:5px;color:#0b66e9;font-weight:900}.download-row{display:grid;grid-template-columns:1fr 120px 120px;gap:10px}.download-disabled,.preview-disabled{height:38px;border:0;border-radius:5px;background:#a3a3a3;color:#fff;font-weight:900}.preview-btn{height:38px;border:1px solid #0868f5;border-radius:5px;background:#fff;color:#0868f5;font-weight:900;cursor:pointer}.preview-btn:hover{background:#eef6ff;box-shadow:0 8px 18px rgba(8,104,245,.12)}.help-card{background:#fff;border:1px solid #dce9fb;border-radius:8px;padding:17px 18px;margin-bottom:10px}.help-title{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:900;margin-bottom:12px}.help-title i{font-style:normal;color:#0868f5;font-size:26px}.help-card h4{margin:6px 0 8px;font-size:16px}.help-card ol{margin:0 0 0 22px;padding:0;color:#374a6b;font-size:14px;line-height:1.8}.help-card p{margin:0;color:#374a6b;font-size:14px;line-height:1.75}.status-ok{color:#12b76a}.status-warn{color:#f79009}@media(max-width:1100px){.nav{gap:24px}.hero-tools .inner,.feature-card,.tool-page .main-head,.work-grid{grid-template-columns:1fr}.tool-grid{grid-template-columns:repeat(2,1fr)}.contact-strip{grid-template-columns:1fr}.contact-mid{border-left:0;padding-left:0}.legal{flex-direction:column}.step-flow{grid-template-columns:1fr}.flow-arr{display:none}}@media(max-width:680px){.container{width:calc(100vw - 28px)}.tools-header,.tools-header .inner{height:auto}.tools-header .inner{align-items:flex-start;flex-direction:column;padding:12px 0}.nav{gap:16px;font-size:14px;flex-wrap:wrap}.brand-title{font-size:22px}.brand-subtitle{font-size:12px}.brand-mark{width:46px;height:46px}.hero-tools .inner{padding:30px 0;min-height:auto}.hero-title,.tool-title{font-size:32px}.tool-grid,.recommend-row,.form-row,.info-row,.convert-grid,.op-btns,.download-row{grid-template-columns:1fr}.tool-card{grid-template-columns:70px 1fr}.contact-strip{width:calc(100vw - 24px);padding:16px}.contact-left{grid-template-columns:1fr}.contact-mid{grid-template-columns:1fr}.legal{width:calc(100vw - 28px);font-size:12px}.legal-right{flex-direction:column;gap:4px}}