:root{--btc: #f7931a;--btc-dark: #d97b06;--btc-tint: #fff4e5;--btc-tint-2: #fde8cd;--bg: #fbf9f6;--card: #ffffff;--ink: #241d14;--muted: #7d7265;--border: #ebe4d9;--code-bg: #faf6ef;--good: #1a8754;--bad: #c0392b;--mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}.container{max-width:1020px;margin:0 auto;padding:0 20px 80px}.hero{text-align:center;padding:56px 0 36px}.hero-logo{width:72px;height:72px;border-radius:50%;background:var(--btc);color:#fff;font-size:44px;font-weight:700;line-height:72px;margin:0 auto 18px;box-shadow:0 8px 24px #f7931a59}.hero h1{font-size:clamp(26px,4.5vw,40px);letter-spacing:.01em}.hero h1 em{font-style:normal;color:var(--btc)}.hero-sub{margin-top:10px;color:var(--muted);font-size:16px;max-width:640px;margin-left:auto;margin-right:auto}.pipeline{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:24px;font-size:13px}.pipeline span{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:5px 14px;color:var(--muted)}.pipeline b{color:var(--btc-dark);font-weight:600}.warning{display:flex;gap:10px;align-items:flex-start;background:var(--btc-tint);border:1px solid var(--btc-tint-2);border-radius:12px;padding:12px 16px;font-size:14px;color:#7a4a05;margin-bottom:32px}.section{margin-bottom:40px}.section-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:16px}.step-num{flex:none;width:34px;height:34px;border-radius:50%;background:var(--btc);color:#fff;font-weight:700;font-size:17px;text-align:center;line-height:34px;margin-top:2px}.section-head h2{font-size:22px}.section-sub{color:var(--muted);font-size:14px;margin-top:2px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}.card+.card{margin-top:16px}.toolbar{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center}.toolbar-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted)}.seg{display:inline-flex;background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:3px;gap:2px}.seg-btn{border:none;background:transparent;padding:6px 14px;border-radius:8px;font-size:14px;color:var(--muted);cursor:pointer;font-family:inherit;transition:all .15s}.seg-btn.active{background:var(--btc);color:#fff;font-weight:600;box-shadow:0 2px 6px #f7931a59}.btn{border:none;background:var(--btc);color:#fff;font-weight:600;font-size:14px;font-family:inherit;padding:9px 18px;border-radius:10px;cursor:pointer;transition:background .15s}.btn:hover{background:var(--btc-dark)}.btn-ghost{background:transparent;color:var(--btc-dark);border:1px solid var(--btc-tint-2)}.btn-ghost:hover{background:var(--btc-tint)}input[type=number],input[type=text],input[type=password],input[type=datetime-local],textarea{font-family:inherit;font-size:14px;border:1px solid var(--border);border-radius:10px;padding:8px 12px;background:var(--card);color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s}input:focus,textarea:focus{border-color:var(--btc);box-shadow:0 0 0 3px #f7931a26}input[type=number]{width:130px;font-family:var(--mono)}textarea{width:100%;font-family:var(--mono);resize:vertical}.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;margin:16px 0}.word-chip{display:flex;align-items:baseline;gap:8px;background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:8px 12px;font-family:var(--mono);font-size:14px}.word-chip i{font-style:normal;font-size:11px;color:var(--btc-dark);min-width:16px}.hint-ok{color:var(--good);font-size:13px}.hint-bad{color:var(--bad);font-size:13px}.field{margin-top:14px}.field-head{display:flex;align-items:center;gap:10px;margin-bottom:5px}.field-label{font-size:13px;font-weight:600;color:var(--muted)}.field-value{font-family:var(--mono);font-size:13px;background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:10px 12px;word-break:break-all;line-height:1.6}.field-value.big{font-size:16px;color:var(--btc-dark);font-weight:600;border-color:var(--btc-tint-2);background:var(--btc-tint)}.copy-btn{border:none;background:transparent;color:var(--btc-dark);font-size:12px;font-family:inherit;cursor:pointer;padding:2px 8px;border-radius:6px}.copy-btn:hover{background:var(--btc-tint)}.reveal-btn{border:none;background:transparent;color:var(--muted);font-size:12px;font-family:inherit;cursor:pointer;padding:2px 8px;border-radius:6px}.reveal-btn:hover{background:var(--code-bg)}.addr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(440px,100%),1fr));gap:16px}.addr-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;display:flex;flex-direction:column}.addr-card-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.addr-card-head h3{font-size:16px}.badge{font-size:11px;font-weight:700;letter-spacing:.05em;background:var(--btc);color:#fff;border-radius:6px;padding:2px 8px}.badge-outline{background:transparent;color:var(--btc-dark);border:1px solid var(--btc-tint-2)}.aka{font-size:12px;color:var(--muted);font-family:var(--mono);margin-top:2px}.how{font-size:13.5px;color:var(--muted);margin-top:12px}details.tech{margin-top:14px;border-top:1px dashed var(--border);padding-top:10px}details.tech summary{cursor:pointer;font-size:13px;color:var(--btc-dark);font-weight:600;-webkit-user-select:none;user-select:none}details.tech summary:hover{color:var(--btc)}.table-wrap{overflow-x:auto;margin-top:14px}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;white-space:nowrap}td.mono{font-family:var(--mono);word-break:break-all}.script-box{font-family:var(--mono);font-size:13px;background:#2b2115;color:#f5e9d5;border-radius:10px;padding:14px 16px;overflow-x:auto;line-height:1.9;margin-top:6px}.script-box .op{color:var(--btc);font-weight:600}.script-box .data{color:#9ad1a5}.spend-note{display:flex;gap:10px;background:var(--code-bg);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:13.5px;color:var(--muted);margin-top:14px}.spend-note b{color:var(--ink)}footer{margin-top:56px;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);text-align:center}footer a{color:var(--btc-dark);text-decoration:none}footer a:hover{text-decoration:underline}.foot-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px;margin-top:8px}@media(max-width:560px){.hero{padding:36px 0 24px}.word-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}}