:root{--ink:#173f31;--green:#237656;--lime:#c7ec78;--paper:#fffdfa;--soft:#f2f4eb;--muted:#64736d;--line:#dfe5df;--orange:#ff7648;--max:1120px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:86px}body{margin:0;background:var(--paper);color:#1d2e28;font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}h1,h2,h3{line-height:1.2;letter-spacing:-.02em}p{margin-top:0}.wrap{width:min(calc(100% - 40px),var(--max));margin:auto}.top{position:sticky;top:0;z-index:20;height:70px;background:rgba(255,253,250,.93);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:900}.mark{display:grid;place-items:center;width:36px;height:36px;border-radius:12px;background:var(--ink);color:var(--lime)}.nav-actions{display:flex;align-items:center;gap:10px}.nav-link{color:var(--muted);font-size:14px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border:0;border-radius:999px;background:var(--ink);color:white;font-weight:800;cursor:pointer}.hero{padding:76px 0 62px;background:linear-gradient(135deg,#eff6e6,#f7efe3);border-bottom:1px solid var(--line)}.label{display:inline-block;margin-bottom:12px;color:var(--green);font-size:13px;font-weight:900;letter-spacing:.12em}.hero h1{max-width:800px;margin:0 0 18px;font-size:clamp(42px,7vw,72px)}.hero p{max-width:720px;color:var(--muted);font-size:18px}.meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.meta span{padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.62);font-size:13px;font-weight:700}.layout{display:grid;grid-template-columns:260px 1fr;gap:62px;padding:62px 0 100px}.toc{position:sticky;top:100px;align-self:start;padding:22px;border:1px solid var(--line);border-radius:20px;background:white}.toc b{display:block;margin-bottom:12px}.toc a{display:block;padding:8px 10px;border-radius:10px;color:var(--muted);font-size:14px}.toc a:hover,.toc a.active{background:var(--soft);color:var(--green);font-weight:800}.toc-note{margin:15px 0 0;padding-top:15px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.content{min-width:0}.notice{display:flex;gap:14px;margin-bottom:44px;padding:20px;border-left:4px solid var(--orange);border-radius:0 16px 16px 0;background:#fff2eb}.notice b{white-space:nowrap}.notice p{margin:0;color:#6d554b}.chapter{padding:0 0 64px;margin-bottom:64px;border-bottom:1px solid var(--line)}.chapter:last-child{border-bottom:0}.chapter-number{display:grid;place-items:center;width:46px;height:46px;margin-bottom:20px;border-radius:15px;background:var(--ink);color:var(--lime);font-weight:900}.chapter h2{margin:0 0 12px;font-size:34px}.chapter-intro{max-width:720px;color:var(--muted)}.step-list{counter-reset:item;display:grid;gap:14px;margin-top:28px}.step{position:relative;padding:22px 22px 22px 66px;border:1px solid var(--line);border-radius:18px;background:white}.step:before{counter-increment:item;content:counter(item);position:absolute;left:20px;top:22px;display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--lime);color:var(--ink);font-weight:900}.step h3{margin:1px 0 6px;font-size:18px}.step p{margin:0;color:var(--muted)}.path{display:inline-flex;align-items:center;flex-wrap:wrap;gap:6px;margin:8px 0 4px;padding:6px 10px;border-radius:8px;background:var(--soft);color:var(--green);font-size:13px;font-weight:800}.tip{margin-top:18px;padding:17px 19px;border-radius:15px;background:var(--soft);color:#445850;font-size:14px}.tip strong{color:var(--green)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:26px}.card{padding:22px;border:1px solid var(--line);border-radius:18px;background:white}.card .emoji{font-size:24px}.card h3{margin:12px 0 7px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:14px}.table-wrap{overflow:auto;margin-top:24px;border:1px solid var(--line);border-radius:16px}table{width:100%;border-collapse:collapse;min-width:620px;background:white}th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}th{background:var(--soft);color:var(--ink)}td{color:var(--muted)}tr:last-child td{border:0}.faq details{margin:10px 0;border:1px solid var(--line);border-radius:15px;background:white}.faq summary{padding:18px 20px;cursor:pointer;font-weight:800}.faq details p{padding:0 20px 18px;margin:0;color:var(--muted)}.footer{padding:42px 0;background:var(--ink);color:#bdcdc7}.footer-row{display:flex;justify-content:space-between;gap:24px;align-items:center}.footer b{display:block;color:white;font-size:18px}.backtop{position:fixed;right:20px;bottom:20px;display:none;width:46px;height:46px;border:0;border-radius:50%;background:var(--ink);color:white;box-shadow:0 10px 28px rgba(23,63,49,.25);cursor:pointer}.backtop.show{display:block}
    @media(max-width:820px){.layout{grid-template-columns:1fr;gap:25px}.toc{position:static}.toc b{margin-bottom:8px}.toc-links{display:flex;gap:6px;overflow:auto;padding-bottom:4px}.toc a{white-space:nowrap;background:var(--soft)}.toc-note{display:none}.grid{grid-template-columns:1fr}.footer-row{align-items:flex-start;flex-direction:column}}@media(max-width:540px){.wrap{width:min(calc(100% - 28px),var(--max))}.hero{padding:52px 0 44px}.hero h1{font-size:42px}.layout{padding-top:34px}.nav-link{display:none}.chapter{padding-bottom:48px;margin-bottom:48px}.chapter h2{font-size:29px}.step{padding:58px 18px 20px}.step:before{left:18px;top:17px}.notice{display:block}.notice b{display:block;margin-bottom:5px}}@media print{.top,.toc,.backtop,.print-hide{display:none!important}.hero{padding:24px 0;background:white}.hero h1{font-size:38px}.layout{display:block;padding:28px 0}.chapter{break-inside:avoid-page;padding-bottom:25px;margin-bottom:25px}.step,.card,.notice{break-inside:avoid}.footer{background:white;color:#333;border-top:1px solid #ccc}.footer b{color:#111}}
    .layout{grid-template-columns:260px minmax(0,1fr)}.toc{min-width:0;overflow:hidden}@media(max-width:820px){.layout{grid-template-columns:minmax(0,1fr)}}
