*{box-sizing:border-box}:root{font-family:PingFang SC,Microsoft YaHei,system-ui,sans-serif;--color-primary: #245fca;--color-primary-hover: #1c50b0;--color-primary-active: #174594;--color-primary-soft: #e8f0ff;--color-primary-text: #214f9c;--color-text: #243752;--color-muted: #586b87;--color-border: #c5d2e5;--color-border-soft: #dce5f1;--color-surface: #ffffff;--color-surface-soft: #f3f6fb;--color-danger: #a93446;--radius-control: 10px;--radius-panel: 16px;color:#123789;font-synthesis:none}body{margin:0}.auth-page ::selection,.chat-page ::selection{color:#173d77;background:#d8e7ff}.auth-page input,.chat-page input,.chat-page textarea{caret-color:var(--color-primary)}.auth-page,.auth-page *,.chat-page,.chat-page *{scrollbar-color:#a9bbd4 transparent;scrollbar-width:thin}.auth-page a,.chat-page a{text-underline-offset:3px}button,input{font:inherit}button:focus-visible,a:focus-visible{outline:3px solid #84b8ff;outline-offset:4px}.auth-page button:focus-visible,.auth-page a:focus-visible,.auth-page input[type=checkbox]:focus-visible,.auth-page input[type=radio]:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}.auth-page{color:var(--color-text);color-scheme:light;position:relative;min-height:100svh;overflow:hidden;background-color:#f6faff;background-image:linear-gradient(rgb(112 155 218 / 4%) 1px,transparent 1px),linear-gradient(90deg,rgb(112 155 218 / 4%) 1px,transparent 1px),radial-gradient(ellipse at 73% 5%,#d5e5fc 0%,transparent 29%),radial-gradient(ellipse at 12% 53%,#d9eaff 0%,transparent 38%),radial-gradient(ellipse at 63% 78%,#eaf3ff 0%,transparent 32%);background-size:106px 92px,106px 92px,auto,auto,auto}.site-header{display:flex;align-items:center;height:92px;padding:0 42px}.brand{display:inline-flex;align-items:center;gap:12px;color:#0664ff;text-decoration:none;font-size:28px;font-weight:600;letter-spacing:1px}.brand-mark{width:50px;height:54px}.hero-heading{text-align:center;margin:16px 20px 28px}.hero-heading h1{margin:0;color:#173d77;font-size:clamp(32px,3.2vw,50px);font-weight:700;letter-spacing:-.8px;line-height:1.3}.hero-heading>p{margin:9px 0 0;color:var(--color-muted);font-size:21px;letter-spacing:.4px}.auth-layout{width:min(100% - 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