:root{color-scheme:light;--bg:#efefed;--surface:#fff;--canvas:#f5f5f3;--field:#f2f2f0;--ink:#1b1b18;--ink-2:#4a4a45;--ink-3:#6c6c66;--border:color-mix(in srgb,#1b1b18 12%,transparent);--border-strong:color-mix(in srgb,#1b1b18 18%,transparent);--accent:#2c73de;--accent-hover:#225fba;--accent-subtle:#ebf2fc;--success:#2f7d4f;--success-subtle:#eaf4ee;--warn-subtle:#f8f0e3;--danger:#c4442a;--danger-subtle:#f9ebe7;--shadow:#1b1b18;--sans:-apple-system,BlinkMacSystemFont,'SF Pro Text','PingFang SC','Helvetica Neue','Microsoft YaHei',system-ui,sans-serif;--serif:'New York','Iowan Old Style',Charter,'Songti SC','Noto Serif CJK SC',Georgia,serif;--script:'Snell Roundhand','Apple Chancery','Segoe Script','Brush Script MT','Kaiti SC','STKaiti',cursive;--mono:ui-monospace,'SF Mono','JetBrains Mono',Menlo,Consolas,monospace}
@media (prefers-color-scheme:dark){:root{color-scheme:dark;--bg:#161615;--surface:#222220;--canvas:#1b1b1a;--field:#2c2c2a;--ink:#ececea;--ink-2:#c2c2bc;--ink-3:#9b9b94;--border:color-mix(in srgb,#ececea 12%,transparent);--border-strong:color-mix(in srgb,#ececea 18%,transparent);--accent:#5a92e5;--accent-hover:#76a6ec;--accent-subtle:#1d2a3d;--success:#6cc08f;--success-subtle:#1c2d23;--warn-subtle:#33281a;--danger:#ef6e55;--danger-subtle:#3a201a;--shadow:#000}}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-underline-offset:.18em}button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::selection{background:var(--accent-subtle)}
.top{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;max-width:1120px;margin:0 auto;padding:18px 24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em}.brand small{font-weight:400;color:var(--ink-3);font-size:13px}
.mark{width:22px;height:22px;border-radius:6px;background:var(--ink);color:var(--surface);display:grid;place-items:center;font:700 13px/1 var(--sans)}
.who{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:var(--ink-2);font-size:13px}.actor{margin-right:4px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:36px;padding:0 18px;border-radius:999px;border:0;background:var(--field);color:var(--ink);font-weight:500;cursor:pointer}
.btn:hover{background:color-mix(in srgb,var(--field) 80%,var(--ink) 8%)}.btn.primary{background:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-hover)}
.btn.small{min-height:30px;padding:0 14px;font-size:13px}.btn.ghost{background:transparent;color:var(--ink-3)}.btn.ghost:hover{color:var(--ink);background:var(--field)}
.btn.danger{background:var(--danger-subtle);color:var(--danger)}.btn.block{width:100%}.btn:disabled{opacity:.45;cursor:default}
.panel{max-width:1120px;margin:0 auto 28px;background:var(--surface);border-radius:16px;overflow:hidden;box-shadow:0 1px 2px color-mix(in srgb,var(--shadow) 6%,transparent),0 8px 28px color-mix(in srgb,var(--shadow) 6%,transparent)}
.hero,.thanks{padding:44px 56px 32px;border-bottom:1px solid var(--border)}.hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end}
.eyebrow{font-size:12px;color:var(--accent);font-weight:500;letter-spacing:.02em;margin:0 0 10px}
h1{font:600 30px/1.2 var(--serif);letter-spacing:-.01em;margin:0 0 12px;text-wrap:balance}h2{font:600 17px/1.35 var(--sans);margin:0}
.lede{color:var(--ink-2);font-size:15px;line-height:1.65;max-width:62ch;margin:0}.mode{color:var(--ink-3);font-size:12.5px;margin:12px 0 0}.mode:empty{display:none}
.steps{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.steps li{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3);padding:6px 12px 6px 6px;border-radius:999px;background:var(--canvas)}
.steps li::before{content:attr(data-n);width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-weight:600;font-size:11px;background:var(--surface);border:1px solid var(--border-strong);color:var(--ink-2)}
.steps li.done{color:var(--ink-2)}.steps li.done::before{content:"✓";background:var(--success);border-color:var(--success);color:var(--surface)}
.steps li.now{background:var(--accent-subtle);color:var(--accent);font-weight:500}.steps li.now::before{background:var(--accent);border-color:var(--accent);color:#fff}
.thanks{display:grid;grid-template-columns:auto minmax(0,1fr);gap:28px;align-items:start;padding-top:52px}
.seal{width:76px;height:76px;border-radius:50%;background:var(--success-subtle);display:grid;place-items:center;color:var(--success);font:600 34px/1 var(--sans)}.seal.wait{background:var(--accent-subtle);color:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:10px}.thanks .actions{margin-top:20px}
.notice{margin:0;padding:10px 56px;font-size:13px;color:var(--ink-2);background:var(--canvas);border-bottom:1px solid var(--border)}.notice:empty{display:none}.notice.error{color:var(--danger);background:var(--danger-subtle)}
.body{display:grid;grid-template-columns:minmax(0,1fr) 380px}
.reader{padding:36px 56px 44px;border-right:1px solid var(--border);background:var(--canvas);min-width:0}
.meta{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;font-size:12px;color:var(--ink-3);margin-bottom:16px}
.chip{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:var(--surface);border:1px solid var(--border);color:var(--ink-2)}
.hash{font-family:var(--mono);font-size:11px;overflow-wrap:anywhere}
.paper{background:#fff;color:#1b1b18;border-radius:12px;padding:44px 52px;box-shadow:0 1px 2px rgba(27,27,24,.06),0 0 0 1px rgba(27,27,24,.07);max-height:70vh;overflow:auto;font:15px/1.75 var(--serif);overflow-wrap:anywhere}
.paper h1{font-size:24px;line-height:1.3;margin:0 0 10px}.paper h2{font:600 19px/1.35 var(--serif);margin:28px 0 8px}.paper h3,.paper h4{font:600 16px/1.4 var(--serif);margin:22px 0 6px}
.paper p,.paper ul,.paper ol,.paper blockquote{margin:0 0 12px}.paper ul,.paper ol{padding-left:22px}.paper blockquote{border-left:3px solid #d9d9d4;padding-left:14px;color:#4a4a45}
.paper code{font:13px var(--mono);background:#f2f2f0;border-radius:4px;padding:1px 4px}.paper hr{border:0;border-top:1px solid #d9d9d4;margin:22px 0}.paper a{color:#2c73de}
.tablewrap{overflow-x:auto;margin:0 0 14px}.paper table{border-collapse:collapse;width:100%;font:13px/1.5 var(--sans)}.paper th,.paper td{border-bottom:1px solid #e6e6e2;padding:7px 8px;text-align:left;vertical-align:top}.paper th{color:#6c6c66;font-weight:500}
.progress{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12px;color:var(--ink-3)}.bar{flex:1;height:4px;border-radius:999px;background:var(--field);overflow:hidden}.bar i{display:block;height:100%;width:0;background:var(--accent);border-radius:999px}
.side{padding:30px 32px 36px;display:flex;flex-direction:column;gap:24px;min-width:0}.side>section,#sign-form{display:flex;flex-direction:column;gap:14px}
.hint,small{display:block;color:var(--ink-3);font-size:12.5px;line-height:1.55;margin:0}small:empty,.hint:empty{display:none}
label{display:block;font-size:12.5px;color:var(--ink-2);font-weight:500}
input:not([type=checkbox]),textarea,select{display:block;width:100%;border:1px solid var(--border);background:var(--field);color:var(--ink);border-radius:8px;padding:9px 12px;margin-top:6px;font-weight:400}
input:not([type=checkbox]):focus,textarea:focus,select:focus{background:var(--surface);border-color:var(--border-strong);outline:none}textarea{min-height:64px;resize:vertical}
fieldset{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}fieldset:empty{display:none}legend{font-size:12.5px;font-weight:500;color:var(--ink-2);margin-bottom:8px;padding:0}
fieldset label,.checkline{display:flex;gap:10px;align-items:flex-start;font-weight:400;font-size:13px;line-height:1.45}input[type=checkbox]{flex:none;width:16px;height:16px;margin:2px 0 0;accent-color:var(--accent)}
@font-face{font-family:cla-sig-signature;src:url(/cla-sig-signature.ttf) format('truetype');font-display:swap}@font-face{font-family:cla-sig-formal;src:url(/cla-pdf-font.ttf) format('truetype');font-display:swap}@font-face{font-family:cla-sig-pen;src:url(/cla-sig-pen.ttf) format('truetype');font-display:swap}@font-face{font-family:cla-sig-hand;src:url(/cla-sig-hand.ttf) format('truetype');font-display:swap}
.flabel{display:block;font-size:12.5px;color:var(--ink-2);font-weight:500}.styles{display:grid;gap:8px;margin:6px 0 6px}
.sty{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;width:100%;min-height:54px;text-align:left;border:1px solid var(--border);border-radius:10px;padding:4px 14px;background:var(--surface);color:var(--ink);cursor:pointer}
.sty:hover{border-color:var(--border-strong)}.sty.on{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.sty small{font-size:11.5px}
.sample{font-size:28px;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sample.empty{color:var(--ink-3)}
.s-signature{font:34px/1.3 cla-sig-signature,var(--script)}.s-formal{font:28px/1.35 cla-sig-formal,var(--script)}.s-pen{font:19px/1.6 cla-sig-pen,var(--script)}.s-hand{font:25px/1.4 cla-sig-hand,var(--script)}
.status-row{display:flex;justify-content:space-between;gap:16px;font-size:13px;padding:8px 0;border-bottom:1px solid var(--border)}.status-row strong{font-weight:500;text-align:right}
.callout{border-radius:8px;padding:10px 12px;font-size:12.5px;line-height:1.5;background:var(--accent-subtle);color:var(--ink-2);margin:0}.callout.warn{background:var(--warn-subtle)}
details{border-top:1px solid var(--border);padding-top:14px}summary{cursor:pointer;color:var(--ink-2);font-size:13px}details[open] summary{margin-bottom:12px}details .actions{margin-top:12px}
.restart{display:flex;flex-direction:column;gap:10px}.withdraw{border-top:1px solid var(--border);padding-top:14px}.withdraw-panel{display:flex;flex-direction:column;gap:12px;margin-top:12px;padding:16px;border-radius:12px;background:var(--canvas)}
.foot{max-width:1120px;margin:0 auto;padding:4px 24px 40px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px 24px;color:var(--ink-3);font-size:12.5px}.foot p{margin:0;max-width:62ch}
@media (max-width:860px){.top{padding:14px 16px}.brand small{display:none}.panel{border-radius:12px;margin:0 8px 24px}.hero,.thanks{grid-template-columns:1fr;padding:30px 22px 24px}.notice{padding:10px 22px}.body{grid-template-columns:1fr}.reader{padding:22px;border-right:0}.paper{padding:26px 22px;max-height:none}.side{padding:22px}h1{font-size:25px}.foot{flex-direction:column;padding:4px 16px 32px}}