:root{--bg:#f7f4ee;--surface:#fffdf8;--ink:#151719;--text:#25292d;--muted:#66706d;--line:#e2d9cc;--green:#275c45;--clay:#9b5635;--soft:#ece5d8}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f7f4ee,#fffdf8 340px);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",sans-serif;line-height:1.6}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(1180px,calc(100% - 40px));margin:auto}.topbar{position:sticky;top:0;z-index:10;background:rgba(247,244,238,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;gap:22px;justify-content:space-between;padding:14px 0}.brand{font-weight:900;color:var(--ink);letter-spacing:-.04em;font-size:1.08em}nav{display:flex;gap:14px;flex-wrap:wrap}nav a{font-weight:750;color:#37413d;font-size:.92em}.active{color:var(--clay)}.lang{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:#fff}.lang button{border:0;background:transparent;border-radius:999px;padding:7px 10px;font-weight:800;color:var(--muted);cursor:pointer;font-size:.85em}html[data-lang=en] .lang-en,html[data-lang=zh] .lang-zh{display:inline}html[data-lang=en] .lang-zh,html[data-lang=zh] .lang-en{display:none}html[data-lang=en] [data-lang-button=en],html[data-lang=zh] [data-lang-button=zh]{background:var(--green);color:#fff}.hero-block{padding:54px 0 28px}.hero-block .side-note{margin-top:18px;background:var(--soft);padding:14px 18px;border-radius:8px;font-size:.94em;max-width:680px}.content h1{font-size:clamp(34px,5.5vw,56px);line-height:1.02;letter-spacing:-.05em;color:var(--ink);margin:14px 0}.eyebrow{font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--green);font-size:13px;margin-bottom:6px}.lead{font-size:clamp(17px,2vw,21px);max-width:760px;color:#343a3f;line-height:1.4}.content section{padding:44px 0;border-bottom:1px solid var(--line)}.content section:last-of-type{border-bottom:none}.content h2{font-size:1.48em;letter-spacing:-.03em;color:var(--ink);margin:0 0 12px}.content h3{font-size:1.12em;margin:0 0 8px}.section-head p{color:var(--muted)}.button{display:inline-flex;padding:11px 17px;border:1px solid var(--line);border-radius:999px;background:#fff;font-weight:850;color:var(--ink);margin-right:10px;font-size:.94em}.primary{background:var(--green);color:#fff;border-color:var(--green)}.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0}table{width:100%;border-collapse:collapse;font-size:.94em}thead{border-bottom:2px solid var(--ink)}th{padding:12px 10px;text-align:left;font-weight:800;color:var(--ink);white-space:nowrap}td{padding:10px;border-bottom:1px solid var(--line);vertical-align:top}td strong{display:block;font-weight:800}td small{display:block;color:var(--muted);font-size:.85em}tbody tr:hover{background:var(--soft)}.risk{display:inline-block;padding:3px 9px;border-radius:99px;background:var(--soft);font-weight:800;font-size:.82em}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;margin:14px 0}.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px}.card h3{margin-top:0}.card .muted{color:var(--muted);font-size:.92em}.checklist{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:22px 24px}.checklist ul,.checklist ol{padding-left:20px;margin:8px 0}.checklist li{margin:6px 0}.notice{background:var(--soft);padding:22px 28px;border-radius:10px;margin:20px 0}.notice h2{font-size:1.2em;margin-top:0}.steps{list-style:none;counter-reset:step;padding:0;display:flex;flex-direction:column;gap:22px}.steps li{counter-increment:step;position:relative;padding-left:58px;min-height:40px;font-size:1.02em}.steps li::before{content:counter(step);position:absolute;left:0;top:-2px;width:38px;height:38px;border-radius:99px;background:var(--green);color:#fff;font-weight:900;font-size:1.1em;display:flex;align-items:center;justify-content:center}.steps li strong{display:block}.code-blocks{display:grid;grid-template-columns:1fr 1fr;gap:18px}.code-blocks pre{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:22px;overflow-x:auto;font-size:.88em;margin:0}code{font-family:ui-monospace,"SF Mono","JetBrains Mono","Fira Code",monospace;font-size:.9em}.muted{color:var(--muted)}.source-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:14px}.source-list li{display:flex;flex-direction:column;gap:4px}.source-list p{color:var(--muted);margin:0}.faq-list details{border-bottom:1px solid var(--line);padding:20px 4px}.faq-list summary{font-weight:800;font-size:1.05em;cursor:pointer}.faq-list p{margin:12px 0 4px 0;color:#343a3f}.picker-section{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:32px 28px}.picker-buttons{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 24px}.picker-btn{border:1px solid var(--line);border-radius:999px;padding:12px 18px;background:#fff;font-weight:800;font-size:.92em;cursor:pointer;transition:background .15s}.picker-btn:hover{background:var(--soft)}.picker-btn.active{background:var(--green);color:#fff;border-color:var(--green)}.picker-panel[hidden]{display:none}.panel-card{background:var(--soft);border-radius:10px;padding:22px 24px;margin-top:8px}.panel-card .tools{font-weight:800;color:var(--clay);margin:6px 0 10px}.panel-card .button{margin-top:10px}.footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.9em}@media(max-width:820px){.code-blocks{grid-template-columns:1fr}.hero-block{padding:36px 0 16px}nav{gap:8px}.cards{grid-template-columns:1fr}}