:root{--ink:#0f1b2d;--mute:#5b6577;--line:#e3e7ee;--bg:#f6f8fb;--card:#fff;--pri:#2563eb;--pri2:#1d4ed8;--acc:#0f766e;--tbd-bg:#fff4d6;--tbd:#8a5a00;--r:12px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--pri)}a:hover{color:var(--pri2)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
section{margin:40px auto}
h1{font-size:2rem;line-height:1.3;margin:.2em 0 .4em}h2{font-size:1.45rem;margin:0 0 .6em}h3{font-size:1.15rem;margin:0 0 .5em}
.lead{font-size:1.1rem;color:var(--mute);max-width:760px}.small{font-size:.9rem}.muted{color:var(--mute)}.center{text-align:center}
.langbar{background:#eef4ff;border-bottom:1px solid #d6e2ff;text-align:center;padding:8px 40px;font-size:.92rem;position:relative}
.langbar button{position:absolute;right:12px;top:4px;border:0;background:none;font-size:1.3rem;cursor:pointer;color:var(--mute)}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.topin{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo b{display:block;font-size:1.05rem}.logo small{display:block;font-size:.78rem;color:var(--mute);line-height:1.1}
.mark{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;background:var(--pri);color:#fff;font-weight:700;font-size:.8rem;letter-spacing:.5px}
.mark.big{width:64px;height:64px;font-size:1.1rem;border-radius:16px}
.nav{display:flex;gap:4px;flex-wrap:wrap;flex:1}
.nav a{text-decoration:none;color:var(--ink);padding:6px 10px;border-radius:8px;font-size:.95rem}
.nav a.on,.nav a:hover{background:#eef3ff;color:var(--pri2)}
.sw{font-size:.9rem;border:1px solid var(--line);border-radius:999px;padding:4px 12px;text-decoration:none}
.hero{background:linear-gradient(135deg,#0f1b2d,#1e3a6e);color:#fff;margin:0;padding:64px 0 56px}
.hero.sm{padding:44px 0 36px}.hero h1{font-size:2.15rem}.hero .lead{color:#c9d5ea}
.eyebrow{text-transform:none;letter-spacing:.5px;color:#9cc0ff;font-weight:600;margin:0}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.cta.col{flex-direction:column;align-items:flex-start}
.btn{display:inline-block;background:var(--pri);color:#fff;border:0;border-radius:10px;padding:11px 20px;font-size:1rem;text-decoration:none;cursor:pointer;font-weight:600}
.btn:hover{background:var(--pri2);color:#fff}.btn.ghost{background:transparent;color:var(--pri);border:1.5px solid var(--pri)}
.hero .btn.ghost{color:#fff;border-color:#fff}.btn.sm{padding:5px 12px;font-size:.88rem}.btn:disabled{opacity:.45;cursor:default}
.btn.suggest{box-shadow:0 0 0 4px #bcd2ff}
.anchors{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:-30px}
.anchors a{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px 10px;text-align:center;text-decoration:none;color:var(--ink);box-shadow:0 4px 14px rgba(15,27,45,.06)}
.anchors b{font-size:1.5rem;display:block;color:var(--pri2)}.anchors span{font-size:.8rem;color:var(--mute)}.anchors em{display:block;font-style:normal;font-size:.88rem;margin-top:4px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card.link{text-decoration:none;color:var(--ink)}.card.link:hover{border-color:var(--pri)}
.band{background:#eaf1ff;padding:36px 0;margin:48px 0}
.ticks{padding-left:0;list-style:none}.ticks li{padding-left:26px;position:relative;margin:.45em 0}
.ticks li:before{content:"✓";position:absolute;left:0;color:var(--acc);font-weight:700}
.pagehead{margin-top:36px}
.lineh{margin:34px 0 14px;padding-top:10px;border-top:1px solid var(--line)}
.price .amt{font-size:1.7rem;font-weight:700;color:var(--pri2);margin:4px 0 8px}.price .amt span{font-size:.9rem;color:var(--mute);font-weight:400}
.price .who{font-size:.92rem;color:var(--mute)}
.note{background:#fff;border-left:4px solid var(--pri);border-radius:8px;padding:14px 18px;margin:22px 0}.note.soft{border-left-color:var(--acc);background:#f1faf8}
.chap{padding-left:1.3em}.chap li{margin:.35em 0}
.tool label{display:block;font-weight:600;font-size:.95rem;margin:0 0 14px}
input,select,textarea{display:block;width:100%;margin-top:6px;padding:10px 12px;border:1px solid #cfd6e2;border-radius:8px;font:inherit;font-weight:400;background:#fff}
form.card label{display:block;font-weight:600;font-size:.95rem;margin:0 0 14px}
.outbar{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.md{font-size:.95rem;max-height:620px;overflow:auto;border-top:1px solid var(--line);padding-top:10px}
.md h1{font-size:1.25rem}.md h2{font-size:1.05rem;margin:1em 0 .3em}.md ul{padding-left:1.2em;margin:.2em 0}
.pre{white-space:pre-wrap;font-family:inherit;background:var(--bg);border-radius:8px;padding:12px;min-height:160px}
.tag{display:inline-block;font-size:.78rem;border-radius:6px;padding:0 6px;margin-left:4px;vertical-align:1px}
.tag.tbd{background:var(--tbd-bg);color:var(--tbd);border:1px solid #f0d68a}
.legend{font-size:.85rem;color:var(--mute);margin-top:10px}
.foot{background:#0f1b2d;color:#c9d2e0;margin-top:60px;padding:34px 0 20px;font-size:.92rem}
.foot a{color:#9cc0ff}.fcols{display:grid;grid-template-columns:2fr 1fr;gap:20px}.fnote{color:#8e9ab0}.copy{border-top:1px solid #24324a;padding-top:14px;margin-top:20px;color:#8e9ab0}
body.chooser{display:flex;min-height:100vh;align-items:center;justify-content:center;text-align:center}
.choose{padding:30px}.choose .cta{justify-content:center}
@media (max-width:860px){.anchors{grid-template-columns:repeat(3,1fr)}.g3{grid-template-columns:1fr}}
@media (max-width:680px){body{font-size:16px}.g2,.fcols{grid-template-columns:1fr}.anchors{grid-template-columns:repeat(2,1fr);margin-top:-20px}.hero h1{font-size:1.6rem}h1{font-size:1.6rem}.nav{order:3;flex-basis:100%}.topin{padding:8px 0}}