:root{--o:#1e88d6;--o2:#8fd3ea;--n:#0b4f8f;--bg:#f6f8fb;--card:#fff;--tx:#1b2735;--mut:#5d6b7c;--bd:#e3e8ef;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0c1624;--card:#13243a;--tx:#e8eef6;--mut:#9fb0c4;--bd:#243a57}}
:root[data-theme="dark"]{--bg:#0c1624;--card:#13243a;--tx:#e8eef6;--mut:#9fb0c4;--bd:#243a57}
*{box-sizing:border-box}html{scroll-padding-top:env(safe-area-inset-top,0px)}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.6 "Segoe UI",Roboto,Arial,sans-serif}
header{background:var(--n);color:#fff;padding:14px 20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:26px;letter-spacing:-1px}
.logo i{width:34px;height:34px;border-radius:9px;background:var(--o);display:grid;place-items:center;font-style:normal;color:#fff;font-size:20px}
.logo b{color:var(--o2)}
header small{opacity:.8;margin-left:auto}
.hero{background:linear-gradient(120deg,var(--n),#1e88d6);color:#fff;padding:36px 20px 70px;text-align:center}
.hero h1{margin:0 0 8px;font-size:clamp(24px,5vw,38px)}.hero h1 span{color:var(--o2)}
.hero p{margin:0 auto;max-width:640px;opacity:.85}
nav{max-width:1000px;margin:-40px auto 0;padding:0 14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px}
nav button{font:inherit;text-align:left;cursor:pointer;background:var(--card);color:var(--tx);border:2px solid var(--bd);border-radius:14px;padding:12px 14px;box-shadow:0 4px 14px #0001}
nav button b{display:block;color:var(--o);font-size:13px}
nav button.on{border-color:var(--o);background:var(--o);color:#fff}nav button.on b{color:#fff}
main{max-width:1000px;margin:22px auto 40px;padding:0 14px}
section{display:none}section.on{display:block}
h2{margin:6px 0;color:var(--n)}@media (prefers-color-scheme:dark){h2{color:#fff}}
:root[data-theme="light"] h2{color:var(--n)}
.lead{color:var(--mut);margin:0 0 16px}
.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:16px 18px;margin-bottom:14px}
.card h3{margin:0 0 8px;font-size:17px}
.tag{display:inline-block;background:var(--o);color:#fff;border-radius:999px;font-size:12px;padding:1px 10px;margin-right:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
ul{margin:6px 0;padding-left:20px}
.flow{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:8px 0}
.flow span{background:var(--bg);border:1px solid var(--bd);border-radius:8px;padding:4px 10px;font-size:14px}
.flow em{color:var(--o);font-style:normal;font-weight:700}
.gp{border-left:4px solid var(--o)}
.matrix{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.matrix div{border-radius:10px;padding:12px;text-align:center;font-size:14px;background:var(--bg);border:1px dashed var(--o)}
.matrix .top{background:var(--o);color:#fff;border-style:solid}
footer{text-align:center;color:var(--mut);font-size:13px;padding:0 14px 28px}
.lg{background:#fff;border-radius:12px;padding:6px 12px;display:inline-flex}.lg img{height:44px;display:block}.hero{display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap;text-align:left}.hero .mas{width:min(220px,50vw);height:auto}.hero div{max-width:520px}@media(max-width:600px){.hero{text-align:center}}
.logo,.logo i{display:none}.hero h1{font-size:clamp(20px,4.6vw,34px);line-height:1.3}.hero .l1{white-space:nowrap;color:#fff}.hero .l1 span{color:var(--o2)}.hero div{max-width:none}.big{font-size:19px;line-height:1.7}.big h3{font-size:24px;color:var(--o)}.big p{margin:10px 0}
.lg2{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px;font-size:15px}.lg2 span{padding:3px 12px;border-radius:999px;border:2px solid var(--o)}.lg2 .a{background:var(--o);color:#fff}
.lane h3{font-size:20px;color:var(--o);margin:0 0 12px}.pf{display:flex;flex-direction:column;align-items:stretch}
.st{position:relative;display:flex;align-items:center;gap:12px;background:var(--o);color:#fff;border:2px solid var(--o);border-radius:12px;padding:11px 14px;font-size:17px;font-weight:600;margin-bottom:26px}
.st.u{background:var(--card);color:var(--tx)}
.st i{flex:none;width:30px;height:30px;border-radius:50%;background:#fff;color:var(--o);display:grid;place-items:center;font-style:normal;font-weight:800;font-size:15px}
.st.u i{background:var(--o);color:#fff}
.st:not(:last-child)::after{content:"";position:absolute;left:28px;bottom:-24px;height:22px;width:0;border-left:3px solid var(--o2)}
.st:not(:last-child)::before{content:"";position:absolute;left:21px;bottom:-26px;border:7px solid transparent;border-top:9px solid var(--o2);border-bottom:0}
.st:last-child{margin-bottom:0}
@media(min-width:760px){#s1 .grid{grid-template-columns:1fr 1fr}}
nav{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}nav button{font-size:32px;line-height:1.25;padding:16px 18px}nav button b{font-size:26px}@media(max-width:600px){nav button{font-size:24px;padding:12px 14px}nav button b{font-size:19px}}header{padding:12px 28px}.lg img{height:52px}header small{font-size:18px;font-weight:600}
.hero{padding:26px 20px 64px;gap:28px}.hero .mas{width:min(170px,38vw)}.hero h1{font-size:clamp(22px,3.4vw,32px)}
nav{max-width:1100px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px;overflow-x:auto;margin-top:-34px}
nav button{font-size:clamp(14px,1.7vw,19px);font-weight:700;line-height:1.3;padding:14px 12px;text-align:center;min-width:150px;display:flex;flex-direction:column;justify-content:center;gap:2px}
nav button b{font-size:clamp(12px,1.3vw,15px);display:block}
@media(max-width:600px){header{padding:10px 14px}.lg img{height:40px}header small{font-size:14px}nav{padding:0 10px}nav button{font-size:14px;padding:10px 8px;min-width:120px}nav button b{font-size:12px}}
.ex .chips,.ex .gen{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin:14px 0}.ex .chips>div:not(.arr){flex:1;min-width:160px;background:var(--bg);border:2px solid var(--o);border-radius:12px;padding:10px 14px;font-weight:700;font-size:19px}.ex small{display:block;font-weight:500;color:var(--mut);font-size:14px}
.ex .arr{display:flex;align-items:center;color:var(--o);font-size:28px;font-weight:800}.ex .gi{background:var(--card);border:2px solid var(--o);border-radius:12px;padding:10px 14px;font-weight:700;flex:1;min-width:150px;text-align:center}.ex .gm{background:var(--o);color:#fff;border-radius:12px;padding:12px 16px;font-weight:800;flex:1;min-width:170px;display:flex;align-items:center;justify-content:center;text-align:center}
.tw{overflow-x:auto}.ex table{width:100%;border-collapse:collapse;font-size:17px;min-width:560px}.ex th{background:var(--o);color:#fff;text-align:left;padding:10px 12px}.ex td{padding:10px 12px;border-bottom:1px solid var(--bd);vertical-align:top}
.demo h3{font-size:22px;color:var(--o)}.demo fieldset{border:2px solid var(--bd);border-radius:12px;margin:0 0 12px;padding:10px 14px}.demo legend{font-weight:800;color:var(--o);padding:0 8px;font-size:18px}
.fg{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:10px 14px}.fg label{display:block;font-size:15px;font-weight:600}.fg input,.fg select{width:100%;margin-top:3px;font:inherit;font-size:16px;padding:8px 10px;border:2px solid var(--bd);border-radius:8px;background:var(--bg);color:var(--tx)}.fg input.bad{border-color:#d93025;background:#d9302518}
.miss{background:#d9302514;border:2px solid #d93025;border-radius:10px;padding:10px 14px;margin:10px 0;font-size:16px}
.dbtn{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0}.dbtn button{font:inherit;font-size:17px;font-weight:700;border-radius:10px;padding:10px 20px;cursor:pointer;border:2px solid var(--o)}.go{background:var(--o);color:#fff}.sec{background:var(--card);color:var(--o)}
.note{color:var(--mut);font-size:15px;margin-bottom:8px}.dtabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.dtabs button{font:inherit;font-size:15px;border:2px solid var(--o);background:var(--card);color:var(--tx);border-radius:8px;padding:6px 10px;cursor:pointer}.dtabs button.on{background:var(--o);color:#fff}
.paper{background:#fff;color:#111;font:15px/1.6 "Times New Roman",serif;padding:22px 26px;border-radius:6px;border:1px solid #bbb;max-height:520px;overflow:auto}.paper h4{text-align:center;margin:8px 0;font-size:17px}.paper p{margin:4px 0}.paper .c{text-align:center}.paper .fn{background:#fff3a8;padding:0 3px}
.abar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:6px 0 12px}.abar button{font:inherit;font-size:16px;font-weight:700;border-radius:10px;padding:8px 16px;cursor:pointer;border:2px solid var(--o)}.abar span{font-size:15px;color:var(--mut)}.abar b{color:var(--o)}.lv{display:inline-block;border-radius:999px;padding:1px 12px;font-size:14px;font-weight:700;color:#fff;white-space:nowrap}.l1{background:#d93025}.l2{background:#e8910c}.l3{background:#5d6b7c}.t4h{margin:18px 0 6px;font-size:20px;color:var(--o)}.t4acc{background:var(--bg);border:2px dashed var(--o);border-radius:12px;padding:12px 14px;margin:12px 0;font-size:16px}.t4acc label{display:block;margin:6px 0}.t4res{margin-top:8px;font-size:16px;padding:10px 12px;border-radius:10px;background:var(--card);border:2px solid var(--bd)}.t4res.ok{border-color:#1a9a4b;background:#1a9a4b18}.t4res.no{border-color:#d93025;background:#d9302514}
.t4 .sec,.t4 select{font:inherit;font-size:15px;border:2px solid var(--o);border-radius:8px;padding:6px 12px;background:var(--card);color:var(--tx);cursor:pointer}.t4qq{border:2px solid var(--bd);border-radius:12px;padding:10px 14px;margin:8px 0;font-size:16px}.t4qq label{display:block;margin:4px 0;cursor:pointer}.t4qq.w{border-color:#d93025}