:root {
  --bg: #060607; --card: #1f1f1f; --line: #2c2c2e; --ink: #f2f2f2;
  --muted: #9a9aa0; --acid: #d4ff4f; --err: #ff6b6b;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 48px 20px 80px; }
.head h1 { font-size: 32px; margin: 0 0 4px; letter-spacing: -0.02em; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 24px; margin-top: 24px;
}
.card section { margin-bottom: 28px; }
.card h2 { font-size: 18px; margin: 0 0 16px; }
.card h3 { font-size: 15px; margin: 0 0 8px; }
label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--muted); }
input[type=text], input[type=email], input[type=url], input:not([type]), textarea {
  display: block; width: 100%; margin-top: 6px; padding: 10px 12px;
  background: #141414; border: 1px solid var(--line); border-radius: 8px;
  color: var(--ink); font: inherit;
}
input[type=file] { display: block; margin-top: 6px; color: var(--muted); }
input:focus, textarea:focus { outline: none; border-color: var(--acid); }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin: 0 0 14px; }
legend { padding: 0 6px; font-size: 13px; color: var(--muted); }
label.opt { display: inline-flex; align-items: center; gap: 8px; margin: 4px 16px 4px 0; color: var(--ink); }
label.opt input { width: auto; margin: 0; }
.deliv { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 16px; }
.opt-tag { font-size: 11px; text-transform: uppercase; color: var(--muted); letter-spacing: .08em; }
button {
  background: var(--acid); color: #000; border: 0; border-radius: 8px;
  padding: 12px 28px; font: inherit; font-weight: 700; cursor: pointer;
}
button:disabled { opacity: .4; cursor: not-allowed; }
button.link { background: none; color: var(--err); padding: 0; font-weight: 400; }
.banner {
  background: #2a2000; border: 1px solid #5a4a00; color: #ffd75e;
  border-radius: 8px; padding: 14px 16px; margin-top: 20px;
}
.banner.ok { background: #0f2a12; border-color: #1f5a26; color: #7fe08a; }
.banner code { display: block; margin: 8px 0; word-break: break-all; color: var(--ink); }
.err {
  white-space: pre-wrap; background: #2a0f0f; border: 1px solid #5a1f1f;
  color: var(--err); border-radius: 8px; padding: 14px 16px; margin-top: 20px;
}
ul.files { list-style: none; padding: 0; margin: 0; }
ul.files li { display: flex; gap: 12px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
ul.files .kind { text-transform: uppercase; font-size: 11px; color: var(--acid); letter-spacing: .08em; }
ul.files a { color: var(--ink); }
.center { text-align: center; }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 24px; }

/* 语言切换菜单（样式对齐总站切换器：母语名靠左、短码靠右、当前项高亮） */
.lang { display: flex; justify-content: flex-end; margin-bottom: 12px; }
details.lang-menu { position: relative; }
details.lang-menu summary {
  list-style: none; cursor: pointer; user-select: none;
  display: inline-flex; align-items: center; gap: 12px;
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--ink); font-size: 14px;
}
details.lang-menu summary::-webkit-details-marker { display: none; }
details.lang-menu summary:hover, details.lang-menu[open] summary { border-color: var(--acid); }
details.lang-menu ul {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 10;
  min-width: 240px; margin: 0; padding: 6px; list-style: none;
  background: #0f0f10; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, .55);
}
details.lang-menu li a {
  display: flex; justify-content: space-between; align-items: center; gap: 32px;
  padding: 10px 14px; border-radius: 6px; color: var(--ink); text-decoration: none; font-size: 15px;
}
details.lang-menu li a:hover { background: #1c1c1e; }
details.lang-menu li a.active { background: var(--ink); color: #000; }
details.lang-menu .code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; letter-spacing: .14em; color: var(--muted);
}
details.lang-menu li a.active .code { color: #555; }