:root {
  color-scheme: light;
  --bg: #f0f2f5;
  --panel: #ebedf0;
  --text: #555555;
  --muted: #6b7280;
  --border: #e2e8f0;
}
* { box-sizing: border-box; }
body { margin: 0; padding: 28px 18px; background: var(--bg); color: var(--text); font: 16px/1.6 "Bai Jamjuree", system-ui, sans-serif; }
.container { width: 100%; max-width: 720px; margin: 0 auto; }
.header { display: flex; align-items: center; gap: 14px; margin: 14px 0 32px; }
.logo { display: grid; place-items: center; flex-shrink: 0; width: 54px; height: 66px; border-radius: 4px; background: #1e3d49; color: #fff; font-size: 34px; font-weight: 700; text-decoration: none; }
.brand p { margin: 0; font-size: clamp(18px, 4vw, 25px); font-weight: 700; letter-spacing: .3px; line-height: 1.2; text-transform: uppercase; }
.brand span { color: var(--muted); font-size: 14px; font-weight: 600; letter-spacing: .6px; text-transform: uppercase; }
h1 { font-size: 27px; line-height: 1.25; margin: 0 0 20px; }
h2 { font-size: 20px; line-height: 1.35; margin: 28px 0 8px; }
p { margin: 12px 0; overflow-wrap: anywhere; }
a { color: #24546b; text-underline-offset: 3px; }
.panel { margin: 22px 0; padding: 22px; border: 1px solid var(--border); border-radius: 4px; background: var(--panel); box-shadow: inset 2px 2px 8px rgba(0,0,0,.03), inset -2px -2px 8px rgba(255,255,255,.5); }
.panel h2 { margin-top: 0; }
label { display: block; margin: 18px 0 5px; font-size: 12px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; }
label:first-child { margin-top: 0; }
input { width: 100%; padding: 13px; border: 1px solid #cbd5e1; border-radius: 4px; background: #f7f8fa; color: #3f434c; font: inherit; }
.btn { display: block; width: 100%; margin: 12px 0; padding: 15px 12px; border: 1px solid var(--border); border-radius: 4px; background: linear-gradient(to bottom,#fff,#f8f9fa); box-shadow: 0 5px 9px rgba(0,0,0,.08); color: var(--text); font: 600 14px/1.3 "Bai Jamjuree", system-ui, sans-serif; text-align: center; text-transform: uppercase; text-decoration: none; cursor: pointer; }
.btn:hover:not(:disabled) { border-color: #9ca3af; }
.btn:active:not(:disabled) { box-shadow: inset 0 2px 4px rgba(0,0,0,.06); transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
:focus-visible { outline: 3px solid #477b91; outline-offset: 3px; }
.buttons { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.small { font-size: 13px; color: var(--muted); }
.message { min-height: 30px; font-weight: 600; }
.message[data-error="true"] { color: #a5283b; }
footer { margin-top: 38px; padding-top: 20px; border-top: 1px solid #d2d7df; color: var(--muted); font-size: 12px; }
nav { display: flex; flex-wrap: wrap; gap: 10px 20px; font-size: 14px; }
@media (max-width: 480px) { body { padding: 18px 14px; } .panel { padding: 17px; } .buttons { grid-template-columns: 1fr; } h1 { font-size: 24px; } }