:root{--bg:#f5f7f3;--surface:#fff;--surface-soft:#edf6f1;--ink:#14231f;--muted:#65736f;--line:#dfe7e2;--brand:#216b5b;--brand-dark:#155044;--accent:#ddf1e8;--danger:#b34242;--shadow:0 14px 36px #1d3d3314;--radius:20px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-.045em;margin-bottom:12px;font-size:clamp(2rem,6vw,3.75rem);line-height:1.04}h2{letter-spacing:-.02em;margin-bottom:6px;font-size:1.25rem}h3{margin-bottom:4px;font-size:1rem}.shell{width:min(1120px,100% - 32px);margin-inline:auto}.narrow{width:min(480px,100% - 32px)}.page-space{padding-block:42px 100px}.grow{flex:1}.min-width-zero{min-width:0}.muted{color:var(--muted)}.center{text-align:center;align-items:center}.full-width{width:100%}.top-gap{margin-top:18px}.app-header{z-index:20;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#f5f7f3e6;border-bottom:1px solid #dfe7e2d9;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;min-height:70px;display:flex}.brand{align-items:center;gap:10px;font-size:1.08rem;font-weight:800;display:inline-flex}.brand-mark{background:var(--brand);color:#fff;border-radius:12px;place-items:center;width:38px;height:38px;font-size:.78rem;display:grid;box-shadow:0 8px 16px #216b5b33}.header-user{align-items:center;gap:16px;font-size:.88rem;display:flex}.button{border:1px solid var(--brand);background:var(--brand);color:#fff;border-radius:12px;justify-content:center;align-items:center;min-height:46px;padding:10px 18px;font-weight:750;transition:transform .15s,background .15s;display:inline-flex}.button:hover{background:var(--brand-dark);transform:translateY(-1px)}.button-large{min-height:52px;padding-inline:22px}.button-small{min-height:38px;padding:7px 13px;font-size:.88rem}.button-secondary{color:var(--brand);background:#fff}.button-secondary:hover{background:var(--surface-soft)}.button-quiet{border-color:var(--line);color:var(--ink);background:0 0}.button-quiet:hover{background:#fff}.text-link{color:var(--brand);font-weight:700}.landing{padding-block:54px 80px}.hero-card{color:#fff;box-shadow:var(--shadow);background:linear-gradient(140deg,#173f37 0%,#216b5b 55%,#3f8c73 100%);border-radius:32px;padding:clamp(36px,8vw,82px);position:relative;overflow:hidden}.hero-card:after{content:"";border:50px solid #ffffff14;border-radius:50%;width:340px;height:340px;position:absolute;bottom:-120px;right:-80px}.hero-card h1{max-width:720px}.hero-card p{color:#d8ece5;max-width:600px;margin-bottom:28px;font-size:1.1rem}.hero-card .button{z-index:1;color:var(--brand-dark);background:#fff;border-color:#fff;position:relative}.eyebrow{color:#4d8e7d;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px;font-size:.75rem;font-weight:850}.hero-card .eyebrow{color:#a9d5c8}.feature-grid{grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px;display:grid}.feature-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:26px}.feature-card p{color:var(--muted);margin-bottom:0}.step{background:var(--accent);width:34px;height:34px;color:var(--brand);border-radius:50%;place-items:center;margin-bottom:24px;font-weight:850;display:grid}.card{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:24px;box-shadow:0 6px 22px #1d3d3309}.auth-card{flex-direction:column;padding:clamp(28px,7vw,44px);display:flex}.auth-card h1{font-size:2.15rem}.auth-card>p{margin-bottom:26px}.stack{flex-direction:column;gap:16px;width:100%;display:flex}label{color:#344943;flex-direction:column;gap:7px;font-size:.83rem;font-weight:750;display:flex}input,select{width:100%;min-height:48px;color:var(--ink);background:#fff;border:1px solid #cedbd5;border-radius:11px;outline:none;padding:10px 13px}input:focus,select:focus{border-color:var(--brand);box-shadow:0 0 0 3px #216b5b1f}.success-icon,.empty-icon{background:var(--accent);width:56px;height:56px;color:var(--brand);border-radius:18px;place-items:center;margin:0 auto 22px;font-size:1.6rem;font-weight:900;display:grid}.flash{border:1px solid;border-radius:12px;flex-wrap:wrap;justify-content:space-between;gap:8px 14px;margin-bottom:20px;padding:12px 14px;font-size:.9rem;display:flex}.flash a{font-weight:800;text-decoration:underline}.flash-success{color:#185b4b;background:#e9f7f1;border-color:#acd7c8}.flash-error{color:#8c3030;background:#fff0f0;border-color:#edbbbb}.page-heading,.circle-title-row{justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px;display:flex}.page-heading h1,.circle-title-row h1{margin-bottom:0;font-size:clamp(2rem,5vw,3rem)}.two-column{grid-template-columns:minmax(0,1.5fr) minmax(280px,.7fr);align-items:start;gap:24px;display:grid}.circle-list{flex-direction:column;gap:12px;display:flex}.circle-card{border:1px solid var(--line);background:#fff;border-radius:16px;align-items:center;gap:16px;padding:18px;transition:transform .15s,box-shadow .15s;display:flex}.circle-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.circle-card h2{margin:0 0 2px}.circle-card p{color:var(--muted);margin:0;font-size:.88rem}.circle-avatar,.member-avatar{background:var(--accent);color:var(--brand);border-radius:14px;flex:none;place-items:center;font-weight:850;display:grid}.circle-avatar{width:50px;height:50px}.large-avatar{width:70px;height:70px;margin-bottom:18px;font-size:1.2rem}.chevron{color:#8aa198;font-size:2rem;font-weight:300}.empty-state{text-align:center;padding-block:48px}.empty-state p{color:var(--muted);margin-bottom:0}.empty-state.compact{padding-block:32px}.sticky-card{position:sticky;top:94px}.back-link{color:var(--brand);margin-bottom:18px;font-size:.9rem;font-weight:750;display:inline-block}.total-block{flex-direction:column;align-items:end;display:flex}.total-block span{color:var(--muted);font-size:.8rem}.total-block strong{font-size:1.5rem}.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:20px;display:grid}.summary-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;justify-content:center;min-height:130px;padding:22px;display:flex}.summary-card span,.summary-card small{color:var(--muted)}.summary-card strong{margin-block:2px;font-size:1.7rem}.summary-primary{background:var(--brand);color:#fff;border-color:#0000}.summary-primary span,.summary-primary small{color:#c4e1d8}.dashboard-grid{grid-template-columns:minmax(0,1.55fr) minmax(280px,.75fr);align-items:start;gap:20px;display:grid}.dashboard-main,.dashboard-side{flex-direction:column;gap:20px;min-width:0;display:flex}.dashboard-side{position:sticky;top:90px}.accent-card{background:linear-gradient(135deg,#fff,#f1faf6);border-color:#b9dacf}.section-heading{justify-content:space-between;gap:16px;margin-bottom:20px;display:flex}.section-heading p{color:var(--muted);margin-bottom:0;font-size:.88rem}.expense-form{align-items:end;gap:12px;display:flex}.amount-field{flex:none;width:165px}.activity-list{flex-direction:column;display:flex}.activity-row{border-top:1px solid var(--line);align-items:center;gap:14px;padding:15px 0;display:flex}.activity-row:first-child{border-top:0;padding-top:0}.activity-row:last-child{padding-bottom:0}.date-tile{background:var(--surface-soft);border-radius:10px;flex-direction:column;flex:none;align-items:center;width:45px;padding:5px;display:flex}.date-tile span{color:var(--muted);text-transform:uppercase;font-size:.67rem}.date-tile strong{font-size:1.1rem}.activity-row h3{text-overflow:ellipsis;white-space:nowrap;margin-bottom:2px;overflow:hidden}.activity-row p{color:var(--muted);margin:0;font-size:.8rem}.activity-amount{flex-direction:column;flex:none;align-items:end;display:flex}.link-button{color:var(--brand);background:0 0;border:0;padding:0;font-size:.73rem;font-weight:700}.danger{color:var(--danger)}.settlement-list{flex-direction:column;gap:10px;display:flex}.settlement-row{background:var(--surface-soft);border-radius:11px;justify-content:space-between;align-items:center;gap:16px;padding:13px 14px;font-size:.9rem;display:flex}.settled-banner{background:var(--surface-soft);color:var(--brand);text-align:center;border-radius:12px;padding:16px;font-weight:800}.record-payment{border-top:1px solid var(--line);margin-top:18px;padding-top:16px}.record-payment summary{color:var(--brand);cursor:pointer;font-weight:750}.payment-history{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}.payment-history p{color:var(--muted);margin-bottom:5px;font-size:.8rem}.member-list{flex-direction:column;gap:15px;display:flex}.member-row{align-items:center;gap:10px;font-size:.8rem;display:flex}.member-avatar{border-radius:12px;width:38px;height:38px;font-size:.72rem}.member-row strong,.member-row small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.member-row small{color:var(--muted)}.positive{color:var(--brand);font-weight:800}.negative{color:var(--danger);font-weight:800}.pending-list{border-top:1px solid var(--line);margin-top:20px;padding-top:15px}.pending-list p{color:var(--muted);text-overflow:ellipsis;margin-bottom:4px;font-size:.8rem;overflow:hidden}.mobile-nav{display:none}@media (max-width:820px){.feature-grid,.two-column,.dashboard-grid{grid-template-columns:1fr}.sticky-card,.dashboard-side{position:static}.dashboard-side{order:-1}.feature-card{padding:22px}}@media (max-width:620px){.shell,.narrow{width:min(100% - 22px,1120px)}.desktop-only{display:none}.page-space{padding-top:26px}.landing{padding-top:18px}.hero-card{border-radius:24px;padding:34px 24px}.hero-card h1{font-size:2.35rem}.hero-card p{font-size:1rem}.feature-grid{grid-template-columns:1fr}.page-heading,.circle-title-row{flex-direction:column;align-items:start;gap:10px}.total-block{align-items:start}.summary-grid{grid-template-columns:1fr 1fr;gap:10px}.summary-card{min-height:112px;padding:16px}.summary-card strong{font-size:1.35rem}.card{border-radius:16px;padding:18px}.expense-form{flex-direction:column;align-items:stretch}.amount-field,.expense-form .button{width:100%}.activity-row{gap:10px}.activity-amount strong{font-size:.9rem}.settlement-row{flex-direction:column;align-items:start;gap:4px}.circle-page{padding-bottom:115px}.mobile-nav{z-index:30;border:1px solid var(--line);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffffff5;border-radius:16px;grid-template-columns:repeat(3,1fr);padding:7px;display:grid;position:fixed;bottom:12px;left:12px;right:12px;box-shadow:0 16px 44px #1550442e}.mobile-nav a{color:var(--brand);text-align:center;border-radius:10px;padding:9px 4px;font-size:.78rem;font-weight:800}.mobile-nav a:first-child{background:var(--brand);color:#fff}}