:root {
  color-scheme: dark;
  --bg: #101414;
  --bg-accent: #16211f;
  --panel: rgba(12, 17, 16, 0.86);
  --panel-soft: rgba(22, 30, 28, 0.76);
  --text: #edf4ef;
  --muted: #a6b6ae;
  --line: rgba(186, 214, 199, 0.16);
  --accent: #74d7a7;
  --accent-deep: #1f7d55;
  --danger: #ff8a8a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(116, 215, 167, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(52, 95, 78, 0.28), transparent 24%),
    linear-gradient(180deg, #0c0f0f 0%, #101414 48%, #141917 100%);
}

button,
input,
textarea,
a {
  font: inherit;
}

.shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 28px auto 48px;
}

.hero,
.notice-card,
.panel,
.import-card,
.batch-card,
.status {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  gap: 24px;
  padding: 28px;
  border-radius: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.2rem, 6vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.lead {
  margin-top: 16px;
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.inline-link {
  color: var(--accent);
}

.hero-actions {
  display: grid;
  align-content: start;
  gap: 10px;
}

.button,
.inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.button:hover,
.inline-button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #08100c;
  background: linear-gradient(135deg, #c8ffd9 0%, var(--accent) 100%);
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line);
}

.button.ghost {
  color: var(--muted);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.08);
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.notice-card,
.panel,
.import-card,
.batch-card,
.status {
  border-radius: 22px;
}

.notice-card {
  padding: 18px 18px 20px;
}

.notice-card h2 {
  margin-bottom: 10px;
  font-size: 1.04rem;
}

.notice-card p,
.import-copy p {
  color: var(--muted);
  line-height: 1.75;
}

.workspace {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.panel {
  padding: 18px;
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-head label,
.field span {
  font-size: 0.94rem;
  font-weight: 700;
}

.panel-head span {
  color: var(--muted);
  font-size: 0.82rem;
}

textarea,
input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  outline: none;
  background: var(--panel-soft);
  color: var(--text);
}

textarea {
  min-height: 440px;
  padding: 16px 18px;
  resize: vertical;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.88rem;
  line-height: 1.6;
}

input {
  min-height: 48px;
  padding: 0 16px;
}

select {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  outline: none;
  background: var(--panel-soft);
  color: var(--text);
  padding: 12px 14px;
}

.group-select {
  min-height: 180px;
}

textarea:focus,
input:focus,
select:focus {
  border-color: rgba(116, 215, 167, 0.55);
  box-shadow: 0 0 0 4px rgba(116, 215, 167, 0.1);
}

.field-help {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.import-card {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: 22px;
  margin-top: 18px;
  padding: 22px;
}

.import-copy h2 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.batch-card {
  margin-top: 18px;
  padding: 22px;
}

.batch-copy {
  max-width: 860px;
}

.batch-copy h2 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.batch-copy p {
  color: var(--muted);
  line-height: 1.75;
}

.batch-workspace {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.batch-textarea {
  min-height: 340px;
}

.import-fields {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.password-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) max-content;
  gap: 10px;
  align-items: center;
}

.inline-button {
  min-height: 48px;
  padding: 0 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
}

.status {
  margin-top: 18px;
  padding: 14px 18px;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
  border-color: rgba(255, 138, 138, 0.28);
}

@media (max-width: 980px) {
  .hero,
  .import-card,
  .batch-workspace,
  .workspace,
  .notice-grid {
    grid-template-columns: 1fr;
  }

  .panel-head {
    display: grid;
  }

  h1 {
    max-width: none;
  }

  textarea {
    min-height: 320px;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(100vw - 20px, 1180px);
    margin-top: 10px;
    margin-bottom: 24px;
  }

  .hero,
  .notice-card,
  .panel,
  .import-card,
  .batch-card,
  .status {
    border-radius: 18px;
  }

  .hero,
  .import-card,
  .batch-card,
  .panel {
    padding: 16px;
  }

  .button,
  .inline-button,
  input {
    width: 100%;
  }

  .password-wrap {
    grid-template-columns: 1fr;
  }
}