:root{--accent:#2f6f73;--accent-deep:#24595c;--accent-soft:#2f6f731a;--danger:#a14138;--gold:#b07c39;--ink:#25211c;--line:#e2d9cc;--line-strong:#cfc2b2;--muted:#746b60;--page-x:clamp(18px, 4vw, 40px);--paper:#f6f0e6;--paper-deep:#ebe0d2;--shadow:0 14px 35px #32261814;--shadow-soft:0 2px 10px #3226180d;--shadow-lift:0 24px 60px -20px #32261847;--radius:14px;--surface:#fffaf1;--font-sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-serif:"Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Songti SC", "Source Han Serif SC", "Noto Serif SC", "Noto Serif CJK SC", serif;color:var(--muted);font-family:var(--font-sans);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;font-weight:500;line-height:1.5}*{box-sizing:border-box}body{background-color:var(--paper);background-image:radial-gradient(52rem 40rem at 12% -8%,#2f6f731f,#0000 60%),radial-gradient(48rem 38rem at 108% 4%,#b07c3921,#0000 58%),radial-gradient(60rem 50rem at 50% 120%,#2f6f7314,#0000 60%);background-repeat:no-repeat;background-attachment:fixed;min-width:320px;min-height:100svh;margin:0}a{color:inherit}button,input{font-family:inherit}svg{flex:none}#root,.app-shell{min-height:100svh}.topbar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);min-height:64px;padding:0 var(--page-x);z-index:20;background:#fffaf1b8;justify-content:space-between;align-items:center;display:flex;position:sticky;top:0}.brand{color:var(--ink);font-family:var(--font-serif);letter-spacing:.01em;align-items:center;gap:11px;font-size:1.18rem;font-weight:700;text-decoration:none;display:inline-flex}.brand-mark{background:linear-gradient(150deg, var(--accent), var(--accent-deep));color:#fff;border-radius:9px;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex;box-shadow:0 4px 12px #2f6f734d}.topbar-meta{color:var(--muted);align-items:center;gap:12px;font-size:.9rem;display:flex}.workspace{max-width:1180px;padding:48px var(--page-x) 72px;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:28px;margin:0 auto;display:grid}.workspace.single{grid-template-columns:minmax(0,760px);justify-content:center}.home-shell{place-items:center;min-height:100svh;display:grid;position:relative;overflow:hidden}.home-aura{pointer-events:none;position:absolute;inset:0}.home-aura:before,.home-aura:after{content:"";filter:blur(60px);border-radius:999px;position:absolute}.home-aura:before{background:radial-gradient(circle,#2f6f7338,#0000 70%);width:32rem;height:32rem;top:-8rem;left:-10rem}.home-aura:after{background:radial-gradient(circle,#b07c3933,#0000 70%);width:30rem;height:30rem;bottom:-10rem;right:-8rem}.home-hero{max-width:660px;padding:64px var(--page-x);text-align:center;z-index:1;justify-items:center;gap:22px;display:grid;position:relative}.home-badge{border:1px solid var(--line);box-shadow:var(--shadow-soft);color:var(--ink);background:#fffaf1cc;border-radius:999px;align-items:center;gap:8px;padding:8px 15px;font-size:.85rem;font-weight:720;display:inline-flex}.home-badge svg{color:var(--accent)}.home-hero .eyebrow{justify-content:center}.home-title{white-space:normal;max-width:14em;font-size:clamp(2.3rem,6vw,3.6rem);line-height:1.12}.home-lede{max-width:30em;margin:0 auto;font-size:1.12rem;line-height:1.75}.home-action{justify-items:center;gap:12px;margin-top:6px;display:grid}.home-start-button{width:fit-content;min-height:52px;padding:0 30px;font-size:1.02rem;box-shadow:0 14px 30px -10px #2f6f7399}.home-hint{color:var(--muted);font-size:.88rem}.home-steps{grid-template-columns:repeat(3,1fr);gap:12px;width:100%;margin:18px 0 0;padding:0;list-style:none;display:grid}.home-step{border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);text-align:left;background:#fffaf1a8;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:14px 16px;display:grid}.home-step-icon{background:var(--accent-soft);color:var(--accent);border-radius:10px;justify-content:center;align-items:center;width:38px;height:38px;display:inline-flex}.home-step-text strong{color:var(--ink);font-size:.96rem;display:block}.home-step-text small{color:var(--muted);font-size:.82rem;line-height:1.4}.eyebrow{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;align-items:center;gap:8px;font-size:.8rem;font-weight:760;display:inline-flex}.eyebrow:before{content:"";opacity:.55;background:currentColor;width:26px;height:1px;display:inline-block}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--ink);font-family:var(--font-serif);letter-spacing:.005em}h1{max-width:720px;font-size:4.4rem;font-weight:700;line-height:1.04}h2{font-size:1.55rem;font-weight:700;line-height:1.18}h3{font-size:1.05rem;font-weight:700}.lede{color:var(--muted);max-width:610px;font-size:1.08rem;line-height:1.7}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.panel.pad{padding:26px}.create-panel{align-self:center;gap:22px;display:grid}.form-stack{gap:18px;display:grid}.field{gap:8px;display:grid}.field-row{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:12px;display:grid}label,.field-label{color:var(--ink);font-size:.92rem;font-weight:720}input{border:1px solid var(--line-strong);color:var(--ink);font:inherit;background:#fff;border-radius:8px;width:100%;min-height:46px;padding:0 14px;transition:border-color .16s,box-shadow .16s}input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #2f6f7329}button,.button-link{cursor:pointer;font:inherit;white-space:nowrap;border:0;border-radius:8px;justify-content:center;align-items:center;gap:9px;min-height:44px;padding:0 16px;font-weight:760;text-decoration:none;transition:background .16s,border-color .16s,color .16s,transform .16s;display:inline-flex}button:disabled{cursor:not-allowed;opacity:.58}button:not(:disabled):hover,.button-link:hover{transform:translateY(-1px)}.primary{background:var(--accent);color:#fff}.primary:hover{background:var(--accent-deep)}.secondary{border:1px solid var(--line-strong);color:var(--ink);background:#fff}.danger{background:var(--danger);color:#fff}.icon-button{border:1px solid var(--line);color:var(--muted);background:#fff;width:40px;min-height:40px;padding:0}.muted{color:var(--muted)}.small{font-size:.9rem}.status-line{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.pill{border:1px solid var(--line);color:var(--muted);border-radius:999px;align-items:center;gap:7px;min-height:30px;padding:0 11px;font-size:.85rem;font-weight:720;display:inline-flex}.pill.open{color:var(--accent);background:#2f6f731a;border-color:#2f6f7333}.pill.closed{color:var(--danger);background:#a141381a;border-color:#a1413833}.host-grid{max-width:1520px;padding:34px var(--page-x) 72px;grid-template-columns:minmax(260px,330px) minmax(320px,.9fr) minmax(420px,1.35fr);align-items:start;gap:24px;margin:0 auto;display:grid}.qr-panel{align-self:start;position:sticky;top:24px}.submissions-panel{align-self:start;gap:16px;display:grid}.panel-header{justify-content:space-between;align-items:start;gap:16px;display:flex}.privacy-switch{border:1px solid var(--line-strong);color:var(--muted);background:#fff;flex:none;min-height:38px;padding:0 12px}.privacy-switch[aria-checked=true]{color:var(--accent);background:#2f6f731a;border-color:#2f6f7347}.host-results{align-self:start;gap:20px;display:grid}.qr-wrap{border:1px solid var(--line);background:#fff;border-radius:8px;justify-content:center;align-items:center;padding:18px;display:grid}.link-box{background:var(--paper);border:1px solid var(--line);color:var(--muted);border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;padding:10px 12px;font-size:.88rem;display:grid}.link-box code{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.metric-row{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.metric{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);padding:14px 16px}.metric-value{color:var(--ink);font-family:var(--font-serif);font-size:1.85rem;font-weight:700;line-height:1}.metric-label{color:var(--muted);margin-top:7px;font-size:.8rem}.submissions{gap:10px;display:grid}.submission-item{border:1px solid var(--line);background:#fff;border-radius:8px;gap:12px;padding:14px;display:grid}.submission-heading{justify-content:space-between;align-items:start;gap:14px;display:flex}.submission-heading strong{color:var(--ink)}.submission-meta{color:var(--muted);flex:none;place-items:flex-end end;gap:2px;font-size:.82rem;line-height:1.25;display:grid}.submission-books{flex-wrap:wrap;gap:8px;display:flex}.submission-book{background:var(--paper);border:1px solid var(--line);color:var(--ink);overflow-wrap:anywhere;border-radius:999px;max-width:100%;padding:7px 10px;font-size:.88rem;line-height:1.2}.result-list{gap:12px;animation:.26s both rise-in;display:grid}.result-panel{gap:14px;padding:18px;display:grid}.result{background:linear-gradient(180deg, #fff, var(--surface));border:1px solid var(--line-strong);border-radius:var(--radius);gap:12px;padding:16px 18px;display:grid;position:relative}.result:before{background:linear-gradient(180deg, var(--accent), var(--gold));border-radius:var(--radius) 0 0 var(--radius);content:"";width:3px;position:absolute;inset:0 auto 0 0}.result-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.result-pair{flex-wrap:wrap;align-items:center;gap:9px;display:flex}.result-amp{color:var(--muted);font-size:.85rem}.person-chip{background:var(--paper);border:1px solid var(--line);color:var(--ink);border-radius:8px;padding:7px 12px;font-weight:760}.score-badge{align-items:baseline;gap:6px;display:inline-flex}.score{color:var(--accent);font-family:var(--font-serif);font-size:1.85rem;font-weight:700;line-height:1}.score-label{color:var(--muted);font-size:.78rem;font-weight:700}.result-summary{color:var(--muted);font-size:.88rem;line-height:1.6}.shared-books{flex-wrap:wrap;gap:7px;display:flex}.shared-book{background:var(--paper);border:1px solid var(--line);color:var(--ink);overflow-wrap:anywhere;border-radius:999px;align-items:center;gap:7px;max-width:100%;padding:4px 11px 4px 5px;font-size:.84rem;font-weight:600;line-height:1.2;display:inline-flex}.shared-book-cover{object-fit:cover;border-radius:4px;width:19px;height:26px}.leader-teams-panel{gap:18px;display:grid}.leader-picker{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;display:grid}.leader-option{border:1px solid var(--line);color:var(--ink);text-align:center;white-space:normal;background:#fff;place-items:center;gap:4px;min-height:58px;padding:10px 12px;display:grid}.leader-option[aria-pressed=true]{color:var(--accent);background:#2f6f731a;border-color:#2f6f734d}.leader-option small{color:var(--muted);font-size:.76rem;font-weight:700}.team-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));align-items:start;gap:12px;display:grid}.team-card{border:1px solid var(--line-strong);background:#fff;border-radius:8px;align-content:start;gap:14px;padding:16px;display:grid}.team-card-header{justify-content:space-between;align-items:start;gap:12px;display:flex}.team-card-header strong,.team-member strong{color:var(--ink)}.team-title{color:var(--muted);text-transform:uppercase;font-size:.78rem;font-weight:760}.team-members{gap:8px;display:grid}.team-member{background:var(--paper);border:1px solid var(--line);border-radius:8px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 12px;display:grid}.leader-badge{color:var(--accent);margin-top:2px;font-size:.76rem;font-weight:760;display:block}.team-score{color:var(--accent);font-weight:820}.team-shared-books{flex-wrap:wrap;grid-column:1/-1;gap:6px;display:flex}.team-shared-book{border:1px solid var(--line);color:var(--muted);overflow-wrap:anywhere;background:#fff;border-radius:999px;max-width:100%;padding:5px 8px;font-size:.78rem;font-weight:700;line-height:1.2}.join-panel{gap:22px;display:grid}.book-input-list{gap:14px;display:grid}.book-input-row{grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:10px;display:grid}.empty-state{background:var(--paper);border:1px dashed var(--line-strong);color:var(--muted);border-radius:8px;padding:22px}.message{border-radius:8px;padding:12px 14px;font-weight:700}.message.error{color:var(--danger);background:#a141381a}.message.success{color:var(--accent);background:#2f6f731a}.loading-page{color:var(--muted);place-items:center;min-height:60svh;display:grid}@keyframes rise-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (width<=900px){.workspace,.host-grid{grid-template-columns:1fr;padding-top:26px}.qr-panel{position:static}.metric-row{grid-template-columns:1fr}}@media (width<=560px){.topbar{flex-direction:column;justify-content:center;align-items:flex-start;gap:8px;padding-top:12px;padding-bottom:12px}h1{font-size:2.45rem}.home-steps,.field-row,.book-input-row,.link-box{grid-template-columns:1fr}.panel-header{flex-direction:column}button,.button-link{width:100%}}