:root{--bg: #eef1f2;--paper: #ffffff;--ink: #18232b;--muted: #5b6b73;--line: #d5dde0;--teal: #246b60;--teal-ink: #ffffff;--teal-soft: #dcede8;--lamp: #e3a93a;--lamp-soft: #fbefd4;--warn: #b4472f;--bubble: #f2f5f6;--f-display: "Gowun Batang", "Nanum Myeongjo", serif;--f-body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;--f-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;--radius: 14px;--nav-h: 60px;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #12191d;--paper: #1a2328;--ink: #e4ebed;--muted: #93a4ab;--line: #2c3a40;--teal: #6cc2b1;--teal-ink: #0f1e1b;--teal-soft: #1e3a35;--lamp: #f0be5c;--lamp-soft: #3a3020;--warn: #e58b74;--bubble: #222d33;color-scheme:dark}}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%}a{color:var(--teal)}h1,h2,h3{margin:0}code{font-family:var(--f-mono);font-size:.9em}.page{max-width:480px;min-height:100dvh;margin:0 auto;background:var(--paper);display:flex;flex-direction:column}.page.with-nav{padding-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom))}.pad{padding:16px}.pad-x{padding:8px 16px 0}.stack{display:flex;flex-direction:column;gap:14px}.stack-sm{display:flex;flex-direction:column;gap:8px}.row{display:flex;align-items:center}.between{justify-content:space-between;gap:8px}.gap{gap:10px}.gap-sm{gap:6px}.grow{flex:1;min-width:0}.center{text-align:center}.muted{color:var(--muted)}.small{font-size:.85rem}.mono{font-family:var(--f-mono)}.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.error{color:var(--warn);margin:0}.label{font-weight:600}.section-title{font-size:1rem;font-weight:600}.appbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:8px;height:56px;padding:0 8px;background:var(--paper);border-bottom:1px solid var(--line)}.appbar-title{flex:1;font-size:1.05rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.appbar-spacer{width:8px}.appbar-right{min-width:40px;display:flex;justify-content:flex-end}.icon-btn{border:0;background:transparent;color:var(--ink);font-size:1.5rem;line-height:1;width:40px;height:40px;border-radius:10px;cursor:pointer}.icon-btn.small{font-size:1.1rem;width:32px;height:32px}.icon-btn:hover{background:var(--bubble)}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;height:calc(var(--nav-h) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:var(--paper);border-top:1px solid var(--line);z-index:5}.bottom-nav a{display:flex;align-items:center;justify-content:center;color:var(--muted);text-decoration:none;font-size:.85rem}.bottom-nav a.active{color:var(--teal);font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:12px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:inherit;font-weight:500;text-decoration:none;cursor:pointer}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--teal);border-color:var(--teal);color:var(--teal-ink)}.btn-ghost{background:transparent}.btn-warn{background:var(--warn);border-color:var(--warn);color:#fff}.btn-warn-ghost{color:var(--warn)}.btn-block{width:100%}.btn-small{min-height:34px;padding:0 12px;font-size:.85rem}.link{border:0;background:none;padding:0;color:var(--teal);font:inherit;text-decoration:underline;cursor:pointer}.input{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);font:inherit}.input:focus,.btn:focus-visible{outline:2px solid var(--teal);outline-offset:1px}.check-row,.radio-row{display:flex;gap:10px;align-items:flex-start;padding:6px 0}.check-row input,.radio-row input{margin-top:4px;width:18px;height:18px;accent-color:var(--teal)}.radio-list{border:0;padding:0;margin:0 0 8px}.consent{padding:8px 12px;border:1px solid var(--line);border-radius:12px}.card{padding:14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}.card-link{display:block;color:inherit;text-decoration:none}.card-link:hover{border-color:var(--teal)}.notice{padding:12px 14px;border-radius:12px;font-size:.9rem}.notice-info{background:var(--teal-soft)}.notice-lamp{background:var(--lamp-soft)}.notice-warn{background:var(--lamp-soft);color:var(--warn)}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{display:inline-block;padding:2px 10px;border-radius:999px;background:var(--bubble);font-size:.8rem;border:0;color:var(--ink)}.chip-teal{background:var(--teal-soft)}.chip-lamp{background:var(--lamp-soft)}.chip-btn{cursor:pointer;font:inherit;font-size:.85rem;padding:4px 12px}.list{list-style:none;margin:0;padding:0}.list-item{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 0;border-bottom:1px solid var(--line)}.start{padding:32px 20px calc(24px + env(safe-area-inset-bottom));justify-content:space-between;gap:24px}.start-hero{margin-top:12vh}.brand{font-family:var(--f-display);font-size:3rem;font-weight:700;color:var(--teal)}.tagline{font-family:var(--f-display);font-size:1.2rem;margin:4px 0 0}.promises{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.promises li{padding-left:14px;border-left:3px solid var(--lamp)}.steps{margin:0;padding-left:20px;color:var(--muted);font-size:.9rem}.steps .current{color:var(--ink);font-weight:600}.kw-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.kw-item{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:8px 4px 8px 12px;border:1px solid var(--line);border-radius:12px}.kw-name{font-weight:600}.kw-item .icon-btn{margin-left:auto}.hero-card{background:var(--teal-soft);border-color:transparent}.big-number{font-family:var(--f-display);font-size:2.6rem;font-weight:700;line-height:1.1;color:var(--teal)}.big-number span{font-size:1.2rem;margin-left:2px}.invite{display:flex;flex-direction:column;gap:10px;border-color:var(--lamp)}.invite-title{font-family:var(--f-display);font-size:1.3rem}.common-list{list-style:none;margin:0;padding:8px 12px;background:var(--bubble);border-radius:12px}.nick-row{flex-wrap:wrap}.chat-page{height:100dvh}.chat-head{padding:8px 16px;border-bottom:1px solid var(--line)}.messages{flex:1;overflow-y:auto;padding:12px 16px;display:flex;flex-direction:column;gap:10px}.msg{max-width:80%;align-self:flex-start}.msg-me{align-self:flex-end;text-align:right}.msg-name{font-size:.8rem;color:var(--muted);margin-bottom:2px}.msg-bubble{display:inline-block;padding:8px 12px;border-radius:14px;background:var(--bubble);white-space:pre-wrap;word-break:break-word;text-align:left}.msg-me .msg-bubble{background:var(--teal);color:var(--teal-ink)}.msg-time{font-size:.7rem;color:var(--muted);margin-top:2px}.msg-system{align-self:center;max-width:90%;padding:6px 12px;border-radius:10px;background:var(--lamp-soft);font-size:.85rem;text-align:center}.composer{padding:10px 12px calc(10px + env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--paper)}.sheet-backdrop{position:fixed;inset:0;background:#0006;display:flex;align-items:flex-end;justify-content:center;z-index:20}.sheet{width:100%;max-width:480px;max-height:85dvh;overflow-y:auto;background:var(--paper);border-radius:18px 18px 0 0;padding:8px 16px calc(20px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:10px}.sheet-handle{width:40px;height:4px;border-radius:2px;background:var(--line);margin:4px auto 6px}.sheet-title{font-size:1.05rem}