:root {
  color-scheme: dark;
  --bg: #070a0d;
  --bg-soft: #0d1116;
  --panel: rgba(16, 23, 29, 0.88);
  --panel-solid: #111820;
  --panel-2: #16212a;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(88, 238, 220, 0.35);
  --text: #f4f8f8;
  --muted: #9eacb1;
  --cyan: #43eadb;
  --green: #7dff9e;
  --blue: #6ba8ff;
  --amber: #ffd27a;
  --red: #ff6f89;
  --radius: 8px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 8%, rgba(67, 234, 219, 0.14), transparent 28rem),
    radial-gradient(circle at 12% 28%, rgba(107, 168, 255, 0.09), transparent 22rem),
    linear-gradient(180deg, #070a0d 0%, #0c1115 54%, #07090c 100%);
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
select,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(67, 234, 219, 0.72);
  border-radius: 50%;
  color: var(--cyan);
  background: rgba(67, 234, 219, 0.08);
  box-shadow: 0 0 28px rgba(67, 234, 219, 0.22);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 72px;
  padding: 0 clamp(18px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 10, 13, 0.86);
  backdrop-filter: blur(18px);
}

.site-nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a:hover,
.footer a:hover,
.side-nav a:hover {
  color: var(--cyan);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(67, 234, 219, 0.46);
}

.btn.primary {
  border-color: rgba(67, 234, 219, 0.55);
  background: linear-gradient(135deg, rgba(67, 234, 219, 0.26), rgba(125, 255, 158, 0.16));
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.035);
}

.btn.large {
  min-height: 48px;
  padding: 0 24px;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(42px, 7vw, 86px) clamp(18px, 5vw, 72px) 48px;
}

.kicker {
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.home-copy h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(42px, 6.2vw, 88px);
  line-height: 1.03;
}

.lead {
  max-width: 660px;
  color: #cad5d7;
  font-size: 20px;
  line-height: 1.72;
}

.hero-actions,
.quick-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.quick-stats {
  margin-top: 34px;
}

.quick-stats div {
  min-width: 140px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.quick-stats strong,
.quick-stats span {
  display: block;
}

.quick-stats span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.product-preview {
  overflow: hidden;
  border: 1px solid rgba(67, 234, 219, 0.25);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(150deg, rgba(17, 24, 32, 0.96), rgba(7, 10, 13, 0.98));
  background-size: 38px 38px, 38px 38px, auto;
  box-shadow: var(--shadow);
}

.preview-top {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
}

.preview-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
}

.preview-top span:nth-child(2) {
  background: var(--amber);
}

.preview-top span:nth-child(3) {
  background: var(--red);
}

.preview-top strong {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
}

.preview-shell {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
}

.preview-shell aside,
.preview-card,
.preview-chat,
.capability-grid article,
.flow-list,
.billing-band,
.model-panel,
.conversation-panel,
.history-panel,
.panel,
.metric-grid article,
.price-row div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(16, 23, 29, 0.78);
}

.preview-shell aside {
  display: grid;
  gap: 10px;
  align-content: start;
  min-height: 460px;
  padding: 14px;
}

.preview-shell b {
  color: var(--muted);
  font-size: 12px;
}

.preview-shell i {
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-style: normal;
  background: rgba(255, 255, 255, 0.035);
}

.preview-shell i.active {
  color: var(--text);
  background: rgba(67, 234, 219, 0.12);
}

.preview-shell section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.preview-card {
  min-height: 120px;
  padding: 16px;
}

.preview-card span,
.model-card-small span {
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
}

.preview-card strong {
  display: block;
  margin-top: 34px;
  font-size: 18px;
}

.preview-card.active {
  border-color: var(--line-strong);
}

.preview-chat {
  grid-column: 1 / -1;
  min-height: 310px;
  padding: 18px;
}

.preview-chat p {
  padding: 14px;
  border-radius: var(--radius);
  color: #dbe7e7;
  background: rgba(255, 255, 255, 0.05);
  line-height: 1.65;
}

.result-frame {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  min-height: 180px;
  margin-top: 18px;
}

.result-frame span {
  border: 1px solid rgba(67, 234, 219, 0.2);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 38%, rgba(67, 234, 219, 0.3), transparent 38%),
    linear-gradient(155deg, rgba(107, 168, 255, 0.14), rgba(125, 255, 158, 0.08));
}

.section {
  padding: clamp(42px, 6vw, 78px) clamp(18px, 5vw, 72px);
}

.section-title h2,
.split-section h2,
.billing-band h2 {
  max-width: 820px;
  margin-bottom: 0;
  font-size: clamp(28px, 4.4vw, 52px);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.capability-grid article {
  padding: 22px;
}

.capability-grid span {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
}

.capability-grid h3 {
  margin: 20px 0 10px;
  font-size: 24px;
}

.capability-grid p,
.muted-text,
.flow-list span,
.billing-band p,
.history-item span {
  color: var(--muted);
  line-height: 1.65;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
  gap: 24px;
  align-items: start;
}

.flow-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 22px;
  list-style: none;
}

.flow-list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.billing-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 clamp(18px, 5vw, 72px) 52px;
  padding: 28px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(18px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.app-body {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 6%, rgba(67, 234, 219, 0.1), transparent 24rem),
    linear-gradient(180deg, #070a0d, #0b1014);
}

.app-sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 22px 16px;
  border-right: 1px solid var(--line);
  background: rgba(8, 12, 16, 0.96);
}

.app-brand {
  margin-bottom: 28px;
}

.category-nav {
  display: grid;
  gap: 10px;
}

.category-nav button {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px;
  min-height: 62px;
  padding: 13px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  text-align: left;
  cursor: pointer;
}

.category-nav button.active {
  border-color: var(--line-strong);
  background: rgba(67, 234, 219, 0.12);
}

.category-nav em {
  color: var(--muted);
  font-size: 12px;
  font-style: normal;
}

.wallet-mini {
  margin-top: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.wallet-mini span,
.wallet-mini strong {
  display: block;
}

.wallet-mini span {
  color: var(--muted);
  font-size: 13px;
}

.wallet-mini strong {
  margin-top: 8px;
  color: var(--green);
  font-size: 28px;
}

.app-main {
  min-width: 0;
  padding: 24px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.app-header h1 {
  margin-bottom: 0;
  font-size: 32px;
}

.status-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.status-strip span {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  font-size: 13px;
}

.workspace-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr) 280px;
  gap: 16px;
  min-height: calc(100vh - 124px);
}

.model-panel,
.conversation-panel,
.history-panel {
  min-width: 0;
  padding: 16px;
}

.panel-title,
.conversation-top,
.prompt-actions,
.queue-head,
.panel-head,
.admin-header,
.task {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-title h2,
.conversation-top h2 {
  margin-bottom: 0;
}

.panel-title span,
.model-meta span,
.api-box span {
  color: var(--muted);
  font-size: 13px;
}

.model-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.model-card-small {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  text-align: left;
  cursor: pointer;
}

.model-card-small.active {
  border-color: var(--line-strong);
  background: linear-gradient(135deg, rgba(67, 234, 219, 0.12), rgba(107, 168, 255, 0.08));
}

.model-card-small strong {
  font-size: 17px;
}

.model-card-small p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.conversation-panel {
  display: grid;
  grid-template-rows: auto minmax(360px, 1fr) auto;
  gap: 14px;
}

.model-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.model-meta span {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
}

.chat-output {
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 14px;
  min-height: 360px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    rgba(0, 0, 0, 0.13);
  background-size: 34px 34px, 34px 34px, auto;
}

.message {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  max-width: 760px;
}

.message span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: rgba(67, 234, 219, 0.13);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
}

.message p {
  margin-bottom: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.055);
  line-height: 1.65;
}

.message.user {
  justify-self: end;
}

.message.user span {
  color: var(--green);
  background: rgba(125, 255, 158, 0.12);
}

.result-stage {
  display: grid;
  min-height: 280px;
}

.video-result,
.image-result,
.text-result,
.audio-result {
  display: grid;
  place-items: center;
  min-height: 280px;
  border: 1px solid rgba(67, 234, 219, 0.22);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 44%, rgba(67, 234, 219, 0.22), transparent 28%),
    linear-gradient(145deg, rgba(107, 168, 255, 0.12), rgba(125, 255, 158, 0.08));
}

.play-core {
  width: 72px;
  height: 72px;
  border: 1px solid rgba(67, 234, 219, 0.7);
  border-radius: 50%;
  box-shadow: 0 0 46px rgba(67, 234, 219, 0.22);
}

.video-result p,
.image-result p,
.audio-result p {
  color: var(--muted);
}

.image-result {
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 12px;
  padding: 16px;
}

.image-result div {
  min-height: 132px;
  border: 1px solid rgba(67, 234, 219, 0.2);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 60% 38%, rgba(125, 255, 158, 0.22), transparent 32%),
    linear-gradient(135deg, rgba(67, 234, 219, 0.12), rgba(107, 168, 255, 0.12));
}

.text-result {
  align-content: start;
  justify-items: stretch;
  padding: 18px;
}

.text-result p {
  margin-bottom: 12px;
  color: #dbe7e7;
  line-height: 1.8;
}

.audio-result .wave {
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 96px;
}

.audio-result .wave span {
  width: 8px;
  border-radius: 999px;
  background: var(--cyan);
}

.audio-result .wave span:nth-child(1) { height: 24px; }
.audio-result .wave span:nth-child(2) { height: 58px; }
.audio-result .wave span:nth-child(3) { height: 36px; }
.audio-result .wave span:nth-child(4) { height: 72px; }
.audio-result .wave span:nth-child(5) { height: 42px; }

.prompt-box {
  display: grid;
  gap: 12px;
}

.prompt-tools {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
}

textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(0, 0, 0, 0.22);
}

textarea {
  min-height: 114px;
  padding: 13px;
  resize: vertical;
  line-height: 1.65;
}

select {
  min-height: 38px;
  padding: 0 10px;
}

.prompt-actions span {
  color: var(--muted);
  font-size: 13px;
}

.history-item {
  display: grid;
  gap: 7px;
  margin-top: 12px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}

.history-item.active {
  border-color: rgba(125, 255, 158, 0.28);
}

.api-box {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
}

.api-box code {
  overflow-wrap: anywhere;
  color: var(--green);
}

.admin-body {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 26px 20px;
  border-right: 1px solid var(--line);
  background: #090d11;
}

.side-nav {
  display: grid;
  gap: 8px;
  margin-top: 34px;
}

.side-nav a {
  padding: 12px 14px;
  border-radius: var(--radius);
  color: var(--muted);
}

.side-nav .active {
  color: var(--text);
  background: rgba(67, 234, 219, 0.1);
}

.admin-main {
  padding: 30px;
}

.admin-header {
  margin-bottom: 22px;
}

.admin-header h1 {
  margin-bottom: 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metric-grid article {
  padding: 18px;
}

.metric-grid span,
.metric-grid em {
  color: var(--muted);
  font-style: normal;
}

.metric-grid strong {
  display: block;
  margin: 12px 0;
  font-size: 32px;
}

.admin-grid {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 14px;
  margin-top: 14px;
}

.panel {
  padding: 20px;
}

.wide-panel {
  grid-column: 1 / -1;
}

.model-status p,
.risk-row {
  display: grid;
  gap: 12px;
}

.model-status p {
  grid-template-columns: 1fr auto;
  margin: 14px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
}

th,
td {
  padding: 13px 8px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--muted);
  font-weight: 600;
}

.pill {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 12px;
}

.pill.ok {
  color: var(--green);
  background: rgba(125, 255, 158, 0.12);
}

.pill.warn {
  color: var(--amber);
  background: rgba(255, 210, 122, 0.12);
}

.risk-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.risk-row div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.risk-row span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

@media (max-width: 1180px) {
  .workspace-layout {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .history-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 980px) {
  .home-hero,
  .split-section,
  .app-body,
  .admin-body {
    grid-template-columns: 1fr;
  }

  .app-sidebar,
  .sidebar {
    position: static;
    height: auto;
  }

  .category-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .workspace-layout,
  .capability-grid,
  .metric-grid,
  .admin-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .conversation-panel,
  .history-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  .site-header {
    flex-wrap: wrap;
    gap: 14px;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .site-nav {
    order: 3;
    justify-content: space-between;
    width: 100%;
    margin-left: 0;
  }

  .home-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .preview-shell,
  .preview-shell section,
  .capability-grid,
  .workspace-layout,
  .metric-grid,
  .admin-grid,
  .risk-row,
  .prompt-tools {
    grid-template-columns: 1fr;
  }

  .preview-shell aside {
    min-height: auto;
  }

  .billing-band,
  .app-header,
  .prompt-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .category-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .app-main,
  .admin-main {
    padding: 16px;
  }
}