:root{--ink:#15231d;--muted:#66736d;--green:#18a572;--green-dark:#087a50;--soft:#f3f8f5;--line:#dfe9e4;--blue:#eef2ff;--danger:#a13b3b}*{box-sizing:border-box}body{margin:0;background:#f2f5f3;color:var(--ink);font-family:Pretendard,"Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif}.mobile-shell{max-width:640px;min-height:100vh;margin:0 auto;padding:18px 18px 48px;background:#fff}.mobile-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:8px 0 18px;border-bottom:1px solid var(--line)}.mobile-header small{display:block;color:var(--green);font-weight:800;letter-spacing:.08em}.mobile-header h1{margin:5px 0 0;font-size:1.65rem}.mobile-header>a,.mobile-header summary{color:var(--green-dark);font-weight:700;text-decoration:none;cursor:pointer;list-style:none}.mobile-header details{position:relative}.mobile-header details nav{position:absolute;right:0;top:34px;z-index:10;width:150px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 34px #173d2a22;overflow:hidden}.mobile-header details nav a{display:block;padding:12px 14px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}.lead{font-size:1.04rem;line-height:1.65;color:#425149;margin:24px 0}.stack-form{display:grid;gap:18px}.stack-form label{display:grid;gap:8px;font-weight:750}.stack-form input,.stack-form textarea{width:100%;border:1px solid #cfdcd5;border-radius:12px;padding:14px 15px;font:inherit;color:var(--ink);background:#fbfcfb;outline:none}.stack-form textarea{min-height:92px;resize:vertical;line-height:1.5}.stack-form input:focus,.stack-form textarea:focus{border-color:var(--green);box-shadow:0 0 0 4px #18a5721c;background:#fff}.stack-form label small{font-weight:500;color:var(--muted)}button{border:0;border-radius:13px;padding:16px 18px;background:var(--green);color:#fff;font:inherit;font-weight:850;cursor:pointer;box-shadow:0 7px 18px #0b8d5c26}.alert{padding:14px 16px;margin:18px 0;border-radius:12px;line-height:1.5}.alert.success{background:#eaf8f1;color:#08613f}.alert.error{background:#fff0f0;color:var(--danger)}.empty{margin:30px 0;padding:32px 18px;text-align:center;background:var(--soft);border-radius:14px;color:var(--muted)}.my-card{margin:18px 0;padding:20px;border:1px solid var(--line);border-radius:16px;background:#fff}.my-card time{color:var(--muted);font-size:.86rem}.my-card h2{margin:8px 0 16px}.my-card dl{display:grid;grid-template-columns:64px 1fr;gap:9px 12px;margin:0}.my-card dt{font-weight:800;color:var(--green-dark)}.my-card dd{margin:0;line-height:1.5}@media(max-width:380px){.mobile-shell{padding-left:14px;padding-right:14px}.mobile-header h1{font-size:1.4rem}}

.stack-form select{width:100%;border:1px solid #cfdcd5;border-radius:12px;padding:14px 15px;font:inherit;color:var(--ink);background:#fbfcfb}.stack-form select:focus{border-color:var(--green);box-shadow:0 0 0 4px #18a5721c;background:#fff}.hub-shell .week-grid{display:grid;gap:14px;margin-top:8px}.week-card{display:block;padding:18px 20px;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:inherit;position:relative}.week-card.open{background:#fff;box-shadow:0 8px 22px #0b8d5c14}.week-card.soon{background:#f7f9f8;opacity:.72}.week-card .week-no{display:block;color:var(--green-dark);font-weight:800;font-size:.82rem;letter-spacing:.06em}.week-card h2{margin:6px 0 4px;font-size:1.15rem}.week-card p{margin:0;color:var(--muted);font-size:.92rem;line-height:1.5}.week-badge{position:absolute;right:18px;top:18px;font-size:.76rem;font-weight:800;padding:4px 10px;border-radius:999px}.badge-open{background:#e7f7f0;color:var(--green-dark)}.badge-soon{background:#eef0ef;color:var(--muted)}