* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, 'Segoe UI', Roboto, sans-serif; background: #0d1117; color: #e6edf3; }
.hidden { display: none; }
header { display: flex; align-items: baseline; gap: 16px; padding: 20px 28px; border-bottom: 1px solid #21262d; }
.spacer { flex: 1; }
h1 { font-size: 22px; margin: 0; letter-spacing: 0.5px; }
h2 { font-size: 16px; margin: 0 12px 0 0; }
.tag { color: #8b949e; font-size: 13px; }
section { padding: 20px 28px; }
.row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
button { background: #1f6feb; color: #fff; border: 0; border-radius: 6px; padding: 7px 14px; font-size: 13px; cursor: pointer; }
button:hover { background: #388bfd; }
button:disabled { background: #30363d; cursor: wait; }
button.ghost { background: transparent; border: 1px solid #30363d; color: #8b949e; }
button.ghost:hover { color: #e6edf3; border-color: #8b949e; }
button.watch { border: 0; font-size: 16px; padding: 2px 6px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #21262d; }
th { color: #8b949e; font-weight: 600; }
a { color: #58a6ff; text-decoration: none; }
.badge { padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 700; }
.badge.hot { background: #da3633; color: #fff; }
.badge.medium { background: #9e6a03; color: #fff; }
.reason { color: #8b949e; max-width: 320px; }
.headlines { padding: 10px 12px; background: #161b22; border: 1px solid #21262d; border-radius: 6px; margin-bottom: 12px; font-size: 13px; line-height: 2; }
.hl { display: inline-block; margin: 0 8px 4px 0; padding: 3px 10px; background: #0d1117; border: 1px solid #30363d; border-radius: 12px; cursor: pointer; }
.hl:hover { border-color: #58a6ff; color: #58a6ff; }
input[type=password], input[type=email] { background: #0d1117; border: 1px solid #30363d; border-radius: 6px; color: #e6edf3; padding: 9px 12px; width: 100%; margin: 6px 0; }
.login-box { max-width: 380px; margin: 15vh auto; padding: 32px; background: #161b22; border: 1px solid #21262d; border-radius: 10px; text-align: center; }
.err { color: #f85149; font-size: 13px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; height: 70vh; }
#htmlBox { width: 100%; height: 100%; background: #0d1117; color: #e6edf3; border: 1px solid #30363d; border-radius: 6px; padding: 12px; font-family: monospace; font-size: 12px; resize: none; }
#preview { width: 100%; height: 100%; background: #fff; border: 1px solid #30363d; border-radius: 6px; }
#scanMsg, #edMsg { color: #8b949e; font-size: 13px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; height: auto; } #htmlBox, #preview { height: 50vh; } }