:root{--ink: #10212b;--muted: #657681;--sea: #0d2f46;--blue: #1e7890;--pale: #edf8f8;--paper: #f8f3e8;--gold: #e6b85d;--line: rgba(13, 47, 70, .12);--shadow: 0 18px 48px rgba(20, 42, 54, .16)}*{box-sizing:border-box}body{min-height:100vh;margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;letter-spacing:0;background:radial-gradient(circle at 18% 8%,rgba(30,120,144,.18),transparent 24rem),linear-gradient(180deg,#f2fbfb 0%,var(--paper) 52%,#eaf4f4 100%)}button,input,select,textarea{font:inherit}button{border:0;cursor:pointer}.phone-shell{width:min(100%,520px);min-height:100vh;margin:0 auto;padding:max(18px,env(safe-area-inset-top)) 16px calc(88px + env(safe-area-inset-bottom))}.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}.brand-mark{display:grid;width:44px;height:44px;place-items:center;border-radius:10px;color:#fff;font-weight:900;background:var(--sea)}.kicker{margin:0 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