:root{--bg: #f5f7fb;--surface: #ffffff;--surface-soft: #f8fafc;--text: #172033;--muted: #667085;--line: #dfe5ec;--primary: #0e6f68;--primary-dark: #09554f;--primary-soft: #e8f4f2;--danger: #b42318;--danger-soft: #fef3f2;--warning: #b54708;--warning-soft: #fffaeb;--success: #027a48;--success-soft: #ecfdf3;--info: #175cd3;--info-soft: #eff8ff;--shadow: 0 16px 40px rgba(16, 24, 40, .08);--radius-lg: 22px;--radius-md: 14px;--radius-sm: 10px}*{box-sizing:border-box}html{min-width:320px}body{margin:0;min-height:100vh;font-family:Pretendard,Noto Sans KR,Apple SD Gothic Neo,Malgun Gothic,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at 10% 0%,rgba(14,111,104,.11),transparent 31%),var(--bg)}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.hidden{display:none!important}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr)}.auth-hero{padding:clamp(40px,7vw,96px);display:flex;flex-direction:column;justify-content:space-between;color:#fff;background:linear-gradient(145deg,#072c42f5,#0e6f68f0),linear-gradient(30deg,#0c3153,#0e6f68);position:relative;overflow:hidden}.auth-hero:before,.auth-hero:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.14);border-radius:999px}.auth-hero:before{width:420px;height:420px;right:-170px;top:-140px}.auth-hero:after{width:280px;height:280px;right:50px;bottom:-180px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;position:relative;z-index:1}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:#ffffff24;border:1px solid rgba(255,255,255,.2);font-size:24px}.hero-copy{position:relative;z-index:1;max-width:660px}.hero-copy h1{margin:0 0 18px;font-size:clamp(38px,5vw,68px);line-height:1.08;letter-spacing:-.05em}.hero-copy 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