:root {
  color: #172033;
  background: #f5f7fb;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  --blue: #1f6feb;
  --blue-dark: #174fb7;
  --teal: #0f9f9a;
  --ink: #172033;
  --muted: #64748b;
  --line: #d8e0ec;
  --soft: #eef5ff;
  --panel: #ffffff;
  --shadow: 0 22px 60px rgba(30, 41, 59, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, #f8fbff 0%, #eef4fb 52%, #f8fafc 100%);
}

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

button,
input,
select {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(216, 224, 236, 0.72);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  font-weight: 900;
}

.brand img {
  width: 118px;
  height: 44px;
  object-fit: contain;
}

.brand span {
  white-space: nowrap;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: #334155;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-header nav a:hover {
  color: var(--blue);
}

.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(42px, 7vw, 92px) clamp(20px, 6vw, 88px) 64px;
}

.hero-copy {
  max-width: 680px;
}

.hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.45rem, 5.4vw, 5.4rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero p {
  max-width: 620px;
  margin: 24px 0 0;
  color: #475569;
  font-size: 1.08rem;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-action,
.secondary-action,
.panel-title button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  padding: 0 20px;
  font-weight: 850;
}

.primary-action {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 14px 28px rgba(31, 111, 235, 0.22);
}

.primary-action:hover {
  background: var(--blue-dark);
}

.secondary-action {
  border: 1px solid var(--line);
  background: #fff;
  color: #1f2937;
}

.release-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.93rem;
}

.release-line strong {
  color: var(--blue);
}

.hero-visual {
  position: relative;
  min-height: 520px;
}

.client-window {
  position: relative;
  z-index: 2;
  width: min(690px, 100%);
  margin-left: auto;
  overflow: hidden;
  border: 1px solid #cbd7e8;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.window-top {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: #f8fafc;
}

.window-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #cbd5e1;
}

.window-body {
  min-height: 360px;
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  background: #f8fafc;
}

.preview-sidebar {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 24px;
  border-right: 1px solid var(--line);
  background: #fff;
}

.preview-sidebar strong {
  font-size: 1.1rem;
}

.preview-sidebar span {
  border-radius: 6px;
  background: var(--soft);
  padding: 10px;
  color: #1d4ed8;
  font-weight: 750;
}

.preview-main {
  display: grid;
  align-content: center;
  gap: 22px;
  padding: 32px;
}

.preview-prompt {
  border: 1px solid #c7d8f4;
  border-radius: 8px;
  background: #fff;
  padding: 20px;
  color: #172033;
  font-size: 1.22rem;
  font-weight: 850;
}

.preview-log {
  display: grid;
  gap: 10px;
}

.preview-log span {
  border-left: 3px solid var(--teal);
  background: #ecfdf5;
  padding: 10px 12px;
  color: #047857;
  font-weight: 750;
}

.board-image {
  position: absolute;
  right: 0;
  bottom: -28px;
  z-index: 1;
  width: min(280px, 42%);
  filter: drop-shadow(0 24px 34px rgba(15, 23, 42, 0.18));
}

.workflow-section,
.support-section,
.admin-shell {
  padding: 70px clamp(20px, 6vw, 88px);
}

.section-heading {
  max-width: 760px;
}

.section-heading h2,
.support-section h2,
.admin-intro h1,
.panel-title h2 {
  margin: 0;
  color: var(--ink);
  line-height: 1.18;
}

.section-heading h2,
.support-section h2,
.admin-intro h1 {
  font-size: clamp(2rem, 3.6vw, 3.4rem);
}

.section-heading p,
.support-section p,
.admin-intro p,
.panel-title p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.workflow-grid article,
.support-section,
.admin-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.workflow-grid article {
  padding: 24px;
}

.workflow-grid span {
  color: var(--teal);
  font-weight: 900;
}

.workflow-grid h3 {
  margin: 16px 0 0;
  font-size: 1.16rem;
}

.workflow-grid p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.support-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.65fr);
  gap: 40px;
  margin: 10px clamp(20px, 6vw, 88px) 80px;
  padding: 34px;
}

.support-section ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.support-section li {
  border-radius: 6px;
  background: #f8fafc;
  padding: 13px 14px;
  color: #334155;
  font-weight: 750;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 6vw, 88px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.admin-page {
  background: #f5f7fb;
}

.admin-shell {
  display: grid;
  gap: 22px;
}

.hidden {
  display: none !important;
}

.admin-app {
  display: grid;
  gap: 22px;
}

.admin-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px;
}

.admin-intro .admin-message {
  grid-column: 1 / -1;
}

.admin-message {
  min-height: 24px;
  margin-top: 14px;
  font-weight: 800;
}

.admin-message.success {
  color: #067647;
}

.admin-message.error {
  color: #b42318;
}

.admin-login-panel {
  width: min(520px, 100%);
  margin: 48px auto 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 28px;
  box-shadow: var(--shadow);
}

.admin-login-panel h1 {
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 3rem);
}

.admin-login-form {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.admin-login-form label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 800;
}

.admin-login-form input,
.admin-login-form button {
  min-height: 44px;
  border-radius: 6px;
}

.admin-login-form input {
  border: 1px solid #cfd8e6;
  padding: 0 12px;
  outline: none;
}

.admin-login-form button,
.logout-button {
  border: 0;
  background: var(--blue);
  color: #fff;
  font-weight: 850;
  cursor: pointer;
}

.logout-button {
  min-height: 40px;
  border-radius: 6px;
  padding: 0 16px;
}

.admin-panel {
  padding: 24px;
}

.panel-title {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 22px;
}

.panel-title button {
  border: 0;
  background: var(--blue);
  color: #fff;
}

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

.account-form label,
.model-config-form label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 800;
}

.account-form input,
.model-config-form input {
  min-height: 42px;
  border: 1px solid #cfd8e6;
  border-radius: 6px;
  padding: 0 12px;
  outline: none;
}

.model-config-form {
  display: grid;
  grid-template-columns: minmax(260px, 1.1fr) minmax(180px, 0.7fr) minmax(220px, 0.9fr);
  gap: 16px;
  align-items: end;
}

.model-config-status {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
}

.model-config-status span {
  color: var(--muted);
  font-weight: 800;
}

.model-config-status button[type="submit"] {
  min-height: 42px;
  border: 0;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  padding: 0 16px;
  font-weight: 850;
  cursor: pointer;
}

.list-toolbar {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(180px, 0.28fr) auto;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}

.list-toolbar label {
  display: grid;
  gap: 8px;
  color: #344054;
  font-weight: 800;
}

.list-toolbar input,
.list-toolbar select {
  min-height: 42px;
  border: 1px solid #cfd8e6;
  border-radius: 6px;
  background: #fff;
  padding: 0 12px;
  outline: none;
}

.secondary-button {
  min-height: 42px;
  border: 1px solid #cfd8e6;
  border-radius: 6px;
  background: #fff;
  color: #1f2937;
  padding: 0 14px;
  font-weight: 800;
  cursor: pointer;
}

.user-table {
  display: grid;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.user-table > div {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1.35fr;
  gap: 12px;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line-soft, #e7ecf3);
}

.user-table > div:first-child {
  background: #f8fafc;
}

.user-table > div:last-child {
  border-bottom: 0;
}

.user-table .empty-row {
  grid-template-columns: 1fr;
  color: var(--muted);
  font-weight: 750;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.table-actions button {
  min-height: 30px;
  border: 1px solid #cfd8e6;
  border-radius: 6px;
  background: #fff;
  color: #1f2937;
  padding: 0 10px;
  font-weight: 750;
}

.table-actions button:hover {
  border-color: #93c5fd;
  color: var(--blue);
}

.table-actions .danger-button {
  border-color: #fecdca;
  color: #b42318;
}

.table-actions .danger-button:hover {
  border-color: #f97066;
  color: #912018;
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    align-items: flex-start;
    flex-direction: column;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .site-header nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero,
  .support-section,
  .account-form,
  .model-config-form,
  .list-toolbar {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 420px;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .support-section {
    margin-left: 20px;
    margin-right: 20px;
  }
}

@media (max-width: 620px) {
  .brand img {
    width: 96px;
  }

  .hero h1 {
    font-size: 2.15rem;
  }

  .hero-actions,
  .site-footer,
  .panel-title,
  .admin-intro {
    flex-direction: column;
  }

  .admin-intro {
    grid-template-columns: 1fr;
  }

  .client-window {
    min-width: 560px;
  }

  .hero-visual {
    overflow: auto;
  }

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

  .user-table > div {
    min-width: 860px;
  }
}