*{box-sizing:border-box}:root{color:#172033;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f7f9fc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{background:#f7f9fc;min-width:320px;margin:0}button,input{font:inherit}button{cursor:pointer;border:0}button:disabled,input:disabled{cursor:not-allowed;opacity:.55}.auth-page{background:radial-gradient(circle at 20% 8%,#3ecf8e2e,#0000 18rem),radial-gradient(circle at 90% 88%,#5e77ff1a,#0000 18rem);align-content:center;gap:18px;max-width:560px;min-height:100vh;margin:0 auto;padding:32px 20px;display:grid}.hero-card,.auth-card{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#ffffffe6;border:1px solid #17203314;box-shadow:0 18px 48px #1f2f521a}.hero-card{text-align:center;border-radius:24px;padding:24px 26px}.auth-card{border-radius:24px;width:100%;padding:26px}.eyebrow{color:#299463;letter-spacing:.12em;text-transform:uppercase;margin:0 0 8px;font-size:.78rem;font-weight:800}.hero-title,h2{letter-spacing:-.02em;margin:0}.hero-title{color:#1f2e46;max-width:420px;margin:0 auto;font-size:clamp(1.45rem,4vw,2rem);font-weight:700;line-height:1.3}h2{font-size:1.35rem}.hero-description{color:#536070;max-width:390px;margin:12px auto 0;font-size:.95rem;line-height:1.6}.notice{color:#7b4a06;background:#fff8ed;border:1px solid #ffd7a8;border-radius:18px;gap:6px;margin-top:28px;padding:16px 18px;line-height:1.5;display:grid}.card-header{justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:20px;display:flex}.card-description{color:#697589;margin:8px 0 0;font-size:.92rem;line-height:1.45}.session-badge{color:#647084;background:#edf1f7;border-radius:999px;flex:none;padding:6px 10px;font-size:.82rem;font-weight:800}.session-badge.active{color:#137046;background:#dff9ea}.auth-form{gap:13px;display:grid}label{color:#465367;gap:8px;font-size:.9rem;font-weight:800;display:grid}input{color:#172033;background:#fff;border:1px solid #d8dee9;border-radius:14px;outline:none;width:100%;padding:12px 14px;transition:border-color .16s,box-shadow .16s}input:focus{border-color:#3ecf8e;box-shadow:0 0 0 4px #3ecf8e29}.mode-toggle{background:#f3f5f9;border-radius:13px;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:16px;padding:6px;display:grid}.mode-button{color:#5e6a7d;min-height:40px;box-shadow:none;background:0 0;border-radius:10px;font-weight:700;transform:none}.mode-button.active{color:#172033;background:#fff;box-shadow:0 2px 10px #17203314}.mode-button:not(:disabled):hover{box-shadow:none;transform:none}button{color:#fff;background:#172033;border-radius:14px;width:100%;min-height:44px;font-weight:900;transition:transform .16s,box-shadow .16s,background .16s}button:not(:disabled):hover{transform:translateY(-1px);box-shadow:0 12px 26px #17203329}.secondary-button{color:#172033;background:#fff;border:1px solid #d8dee9}.google-button{color:#3c4043;background:#fff;border:1px solid #dadce0;justify-content:center;align-items:center;gap:10px;margin-top:12px;font-weight:700;display:inline-flex}.auth-divider{color:#8a94a6;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin:16px 0 0;font-size:.82rem;font-weight:700;display:grid}.auth-divider:before,.auth-divider:after{content:"";background:#e5e9f0;height:1px}.google-button .google-icon{width:20px;height:20px}.google-button:not(:disabled):hover{background:#f8f9fa;box-shadow:0 1px 2px #3c40434d}.kakao-button{color:#3c1e1e;background:#f7e018;border:1px solid #f7e018;justify-content:center;align-items:center;gap:10px;margin-top:12px;font-weight:700;display:inline-flex}.kakao-button .kakao-icon{width:20px;height:20px}.kakao-button:disabled{opacity:.85}.message{color:#137046;background:#edfdf5;border-radius:14px;margin:16px 0 0;padding:12px 14px;font-weight:700;line-height:1.5}.message.error{color:#b42318;background:#fff0f0}.session-panel{gap:20px;display:grid}dl{gap:12px;margin:0;display:grid}dl div{background:#f6f8fb;border-radius:16px;gap:4px;padding:14px;display:grid}dt{color:#647084;text-transform:uppercase;font-size:.78rem;font-weight:900}dd{overflow-wrap:anywhere;color:#172033;margin:0;font-weight:700}@media (width<=860px){.auth-page{max-width:540px;padding:24px 18px}.hero-card{padding:24px}.hero-title{font-size:clamp(1.35rem,6.5vw,1.85rem)}}@media (width<=520px){.auth-page{gap:14px;padding:16px}.hero-card,.auth-card{border-radius:18px;padding:18px}.card-header{display:grid}.session-badge{width:fit-content}}