:root {
  color-scheme: light;
  --ink: #16201f;
  --muted: #667370;
  --line: #dce4e1;
  --canvas: #f3f6f5;
  --surface: #ffffff;
  --primary: #146b5d;
  --primary-strong: #0b5448;
  --primary-soft: #e0f0eb;
  --coral: #c84f3d;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { min-width: 320px; min-height: 100%; background: var(--canvas); }
body { margin: 0; color: var(--ink); }
button, input { font: inherit; }
[hidden] { display: none !important; }

.access-shell { min-height: 100dvh; display: grid; place-items: center; padding: max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left)); }
.access-panel { width: min(100%, 410px); padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: 0 18px 48px rgba(20, 45, 40, .1); }
.access-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 38px; }
.access-brand > span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 8px; color: #fff; background: var(--primary); font-weight: 900; }
.access-brand > div { display: grid; gap: 1px; }
.access-brand strong { font-size: 16px; }
.access-brand small { color: var(--muted); font-size: 11px; }
.lock-mark { display: grid; place-items: center; width: 54px; height: 54px; margin-bottom: 20px; border-radius: 8px; color: var(--primary); background: var(--primary-soft); }
.lock-mark svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.eyebrow { margin: 0 0 6px; color: var(--primary); font-size: 12px; font-weight: 800; }
h1 { margin: 0; font-size: 30px; line-height: 1.2; letter-spacing: 0; }
.access-copy { margin: 10px 0 25px; color: var(--muted); font-size: 14px; line-height: 1.6; }
form { display: grid; }
label { margin-bottom: 8px; color: var(--muted); font-size: 12px; font-weight: 700; }
input { width: 100%; height: 52px; padding: 0 14px; border: 1px solid #c7d2cf; border-radius: 7px; color: var(--ink); background: #fff; font-size: 18px; letter-spacing: 4px; }
input:focus { outline: 3px solid rgba(20, 107, 93, .18); border-color: var(--primary); }
input[aria-invalid="true"] { border-color: var(--coral); }
.form-error { margin: 8px 0 0; color: var(--coral); font-size: 12px; line-height: 1.5; }
button { min-height: 50px; display: inline-flex; align-items: center; justify-content: center; gap: 8px; margin-top: 14px; padding: 0 20px; border: 1px solid var(--primary); border-radius: 7px; color: #fff; background: var(--primary); cursor: pointer; font-weight: 800; }
button:hover { background: var(--primary-strong); }
button:disabled { opacity: .58; cursor: wait; }
button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.access-note { margin: 22px 0 0; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; line-height: 1.6; }

@media (max-width: 440px) {
  .access-shell { align-items: start; padding-top: max(42px, env(safe-area-inset-top)); }
  .access-panel { padding: 24px 20px; }
  .access-brand { margin-bottom: 32px; }
  h1 { font-size: 27px; }
}