html{color-scheme:light}html[data-theme=dark]{color-scheme:dark;--page: #111923;--surface: #1b2635;--soft: #243246;--heading: #30445c;--text: #e5edf7;--muted: #b4c3d5;--link: #8cbeff;--border: #42546a;--input-border: #7c8fa7;--hover: #2a405d;--focus: #90c2ff;--glow: #223750;--success-bg: #183b2c;--success: #a3e5b9;--success-border: #578567;--danger-bg: #49272d;--danger: #ffb7ae;--danger-border: #b87979}html,body{margin:0;min-height:100%}input,select,textarea,dialog{color:var(--text, #1c2c43);background-color:var(--surface, #fff)}.notice{padding:14px 18px;border:1px solid transparent;border-radius:8px;overflow-wrap:anywhere}.notice-success{background:var(--success-bg, #edf6ef);border-color:var(--success-border, #cee3d3);color:var(--success, #28583a)}.notice-error{background:var(--danger-bg, #fcf0f0);border-color:var(--danger-border, #ecd2d2);color:var(--danger, #84383c)}*,*:before,*:after{box-sizing:border-box}body{font-family:Segoe UI,system-ui,sans-serif;color:var(--text, #1c2c43);background:var(--page, #f5f7fa);line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3{line-height:1.2;letter-spacing:-.035em}h1{font-size:clamp(2rem,4vw,3rem);font-weight:650}h2{font-size:1.25rem;font-weight:650}p{color:var(--muted, #59697e)}a{color:var(--link, #165fc4);text-underline-offset:4px}button,input{font:inherit}button{min-height:44px;cursor:pointer;border:1px solid var(--border, #ced8e5);background:var(--surface, #fff);color:var(--text, #263d5a);padding:.6rem 1rem;border-radius:8px;font-weight:600}button:hover:not(:disabled){background:var(--hover, #edf4ff);border-color:var(--focus, #84ace1)}button:disabled{opacity:.55;cursor:default}:focus-visible{outline:3px solid var(--focus, #1269dc);outline-offset:4px}.eyebrow{display:block;color:var(--muted, #38658d);font-size:.7rem;letter-spacing:.16em;font-weight:700;margin-bottom:18px}