:root {
  --bg: #f5f3ee;
  --surface: #fffdf8;
  --ink: #17211d;
  --muted: #6f7a73;
  --line: #e3ded2;
  --accent: #1f7a5a;
  --accent-dark: #14543f;
  --accent-soft: #e4f2eb;
  --warn: #a35a17;
  --danger: #b43a32;
  --shadow: 0 18px 50px rgba(35, 45, 40, .08);
  --radius: 18px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(31, 122, 90, .10), transparent 32rem),
    radial-gradient(circle at 92% 8%, rgba(209, 150, 76, .10), transparent 30rem),
    var(--bg);
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: .02em;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 11px;
  background: var(--ink);
  color: #fff;
  font-size: 16px;
}

.nav { display: flex; align-items: center; gap: 18px; }
.nav-link { color: var(--muted); font-size: 14px; }
.nav-link:hover { color: var(--ink); }

.link-button {
  border: 0;
  background: none;
  color: var(--muted);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  padding: 0;
}
.link-button:hover { color: var(--danger); }

.page {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 64px;
  flex: 1;
}

.footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 22px 0 30px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
  padding: 54px 0 46px;
}

.hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(38px, 5.2vw, 66px);
  line-height: 1.08;
  letter-spacing: -.045em;
  font-weight: 750;
}

.eyebrow {
  display: inline-block;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 5px 11px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none !important; }
.required { color: var(--danger); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.code-card { padding: 32px; }

.label {
  display: block;
  margin: 16px 0 7px;
  font-size: 13px;
  font-weight: 700;
  color: #3b463f;
}

.input, .code-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  padding: 12px 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, .code-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(31, 122, 90, .12);
}

.code-input {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: .38em;
  text-align: center;
  padding: 16px 8px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 11px;
  padding: 10px 16px;
  font: inherit;
  font-size: 14px;
  font-weight: 650;
  cursor: pointer;
  transition: transform .12s, background .15s, border-color .15s;
  text-decoration: none;
  white-space: nowrap;
}
.button:hover { text-decoration: none; transform: translateY(-1px); }
.button:disabled { opacity: .45; cursor: not-allowed; transform: none; }

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.button-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.button-ghost { background: transparent; }
.button-danger { color: var(--danger); border-color: #ecc9c5; background: #fff7f6; }
.button-small { padding: 6px 10px; font-size: 12.5px; border-radius: 9px; }
.button-block { width: 100%; margin-top: 18px; padding: 13px 16px; }

.hint { color: var(--muted); font-size: 12.5px; margin: 14px 0 0; }
.subtle-link { display: inline-block; margin-top: 18px; color: var(--muted); font-size: 13px; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 30px;
}
.step { padding: 8px 6px; }
.step span { color: var(--accent); font-weight: 800; font-size: 12px; letter-spacing: .12em; }
.step h3 { margin: 8px 0 4px; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 13.5px; }

.narrow { max-width: 440px; margin: 44px auto 0; }
.title { margin: 12px 0 8px; font-size: clamp(27px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -.03em; }

.stack { display: block; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.advanced { margin-top: 14px; border-top: 1px dashed var(--line); padding-top: 12px; }
.advanced summary { cursor: pointer; color: var(--muted); font-size: 13px; }

.alert {
  border-radius: 12px;
  padding: 11px 14px;
  font-size: 14px;
  margin: 14px 0;
  border: 1px solid;
}
.alert-error { background: #fff5f3; border-color: #f0cbc6; color: #8f2b24; }
.alert-success { background: #f0faf5; border-color: #bfe4d2; color: #175c43; }

.admin-head { margin: 8px 0 18px; }
.admin-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 18px;
  margin-bottom: 18px;
}
.stat-card { display: flex; flex-direction: column; }
.plain-list { padding-left: 20px; margin: 12px 0 18px; color: #3d4842; }
.plain-list li { margin: 7px 0; }
.stat { margin-top: auto; padding-top: 18px; border-top: 1px dashed var(--line); display: flex; align-items: baseline; gap: 10px; }
.stat-number { font-size: 36px; font-weight: 750; letter-spacing: -.04em; }

.section { margin-top: 18px; }
.section-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.section-head h2 { margin: 8px 0 0; font-size: 20px; }
.admin-grid h2 { margin: 8px 0 10px; font-size: 22px; }

.table-wrap { overflow-x: auto; }

.search-form {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 4px 0 8px;
}
.search-form .input { flex: 1 1 260px; max-width: 380px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th {
  text-align: left;
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
td { padding: 13px 10px; border-bottom: 1px solid #eee9dd; vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
.actions { display: flex; align-items: center; gap: 8px; }
.inline { display: inline; margin: 0; }
.empty { text-align: center; color: var(--muted); padding: 30px 10px; }

.mono { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
.code-pill {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 7px;
  background: #f1eee5;
  font-size: 13px;
  letter-spacing: .12em;
}

.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
}
.badge-active { background: var(--accent-soft); color: var(--accent-dark); }
.badge-expired { background: #f3efe7; color: #7b746a; }
.badge-revoked { background: #fae6e4; color: var(--danger); }

.created-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  border-radius: 16px;
  background: linear-gradient(120deg, #133c2e, #1f7a5a);
  color: #fff;
  margin: 16px 0 18px;
}
.created-strip .eyebrow { background: rgba(255,255,255,.16); color: #fff; }
.created-code { display: block; font-size: 34px; letter-spacing: .18em; font-family: Consolas, monospace; margin-top: 4px; }
.created-strip .button-ghost { color: #fff; border-color: rgba(255,255,255,.35); }

.share-line {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: -6px 0 18px;
}
.share-line a { color: var(--accent, #1f7a5a); word-break: break-all; }

.upload-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin: 20px 0 24px;
}
.quota { width: min(360px, 100%); }
.quota-line { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12.5px; margin-bottom: 8px; }
.progress { height: 9px; border-radius: 999px; background: #e7e2d6; overflow: hidden; }
.progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), #59b48d); border-radius: inherit; }

.upload-card { padding: 22px; }
.dropzone {
  border: 2px dashed #cfc8b8;
  border-radius: 16px;
  padding: 46px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .12s;
  outline: none;
}
.dropzone:hover, .dropzone:focus, .dropzone.dragover {
  border-color: var(--accent);
  background: #f7fcf9;
}
.dropzone h2 { margin: 8px 0 4px; font-size: 19px; }
.dropzone p { margin: 0; font-size: 13px; }
.drop-icon {
  width: 48px; height: 48px; margin: 0 auto;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 24px;
  font-weight: 700;
}

.queue { margin-top: 14px; display: grid; gap: 9px; }
.queue-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}
.queue-name { font-size: 13.5px; font-weight: 650; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue-status { font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.queue-status.ok { color: var(--accent-dark); }
.queue-status.bad { color: var(--danger); }
.queue-item .progress { grid-column: 1 / -1; height: 6px; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 10;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 840px) {
  .hero { grid-template-columns: 1fr; gap: 30px; padding-top: 28px; }
  .steps { grid-template-columns: 1fr; gap: 10px; }
  .admin-grid { grid-template-columns: 1fr; }
  .upload-head { flex-direction: column; align-items: stretch; }
  .quota { width: 100%; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .topbar, .page, .footer { width: calc(100% - 28px); }
  .card { padding: 20px; }
  .created-strip { flex-direction: column; align-items: flex-start; }
  th, td { padding-left: 7px; padding-right: 7px; }
  .actions { flex-wrap: wrap; }
}