:root {
  --brand: #165dff;
  --brand-dark: #0f3fb4;
  --bg: #f7fafe;
  --white: #ffffff;
  --dark: #1e293b;
  --gray: #64748b;
  --line: #e2e8f0;
  --soft: #eef5ff;
  --good: #0f9f6e;
  --bad: #d74a4a;
  --shadow: 0 12px 38px rgba(22, 93, 255, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--dark);
  font-family: "PingFang SC", "Microsoft YaHei", Inter, system-ui, sans-serif;
  line-height: 1.6;
}

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

.site-shell,
.admin-shell,
.report-shell,
.payment-shell,
.workspace-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 18px;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 24px 0 36px;
  padding: 16px 28px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: 999px;
  box-shadow: 0 8px 30px rgba(22, 93, 255, 0.07);
  backdrop-filter: blur(14px);
}

.logo {
  color: var(--brand);
  font-size: 22px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  color: var(--gray);
  font-size: 15px;
}

.nav-links a:hover {
  color: var(--brand);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 54px 20px 74px;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% 10% auto;
  height: 420px;
  background: radial-gradient(circle, rgba(22, 93, 255, 0.12), rgba(247, 250, 254, 0) 68%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  position: relative;
  margin: 0;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.18;
  letter-spacing: 0;
}

.hero h1 span {
  color: var(--brand);
}

.hero-copy {
  position: relative;
  max-width: 780px;
  margin: 24px auto 36px;
  color: var(--gray);
  font-size: 18px;
}

.hero-actions,
.admin-head {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 8px 24px rgba(22, 93, 255, 0.2);
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-primary:disabled {
  cursor: wait;
  opacity: 0.75;
  transform: none;
}

.btn-secondary {
  background: var(--white);
  color: var(--dark);
  border: 1px solid var(--line);
}

.value-grid,
.feature-grid,
.step-grid,
.report-grid,
.stats-grid {
  display: grid;
  gap: 22px;
}

.value-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 70px;
}

.value-grid article,
.feature-grid article,
.step-grid article,
.report-grid article,
.stats-grid article,
.admin-panel,
.report-section {
  background: var(--white);
  border: 1px solid rgba(226, 232, 240, 0.85);
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.value-grid article {
  padding: 24px;
  text-align: center;
}

.value-grid span,
.step-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--brand);
  font-weight: 800;
}

.value-grid h3,
.feature-grid h3,
.step-grid h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.value-grid p,
.feature-grid p,
.step-grid p {
  margin: 0;
  color: var(--gray);
}

.section,
.steps,
.compare,
.assessment {
  margin: 0 0 82px;
}

.steps {
  margin-inline: -20px;
  padding: 58px 20px 70px;
  background: var(--white);
}

.section-title {
  max-width: 720px;
  margin: 0 auto 34px;
  text-align: center;
}

.section-title h2,
.assessment h2,
.admin-head h1,
.report-hero h1 {
  margin: 0 0 10px;
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: 0;
}

.section-title p,
.assessment p,
.muted {
  margin: 0;
  color: var(--gray);
}

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

.feature-grid article {
  padding: 32px;
}

.feature-grid article:hover,
.value-grid article:hover {
  box-shadow: var(--shadow);
}

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

.step-grid article {
  padding: 26px;
  text-align: center;
}

.compare-table {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 1px solid var(--line);
}

.compare-row:last-child {
  border-bottom: 0;
}

.compare-row span {
  padding: 18px;
}

.compare-row.head {
  background: var(--brand);
  color: #fff;
  font-weight: 800;
}

.good {
  color: var(--good);
  font-weight: 700;
}

.bad {
  color: var(--bad);
  font-weight: 700;
}

.assessment {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 36px;
  align-items: start;
  padding: 42px;
  background: var(--white);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.assessment-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.assessment-form label {
  display: grid;
  gap: 8px;
  color: var(--gray);
  font-size: 14px;
  font-weight: 700;
}

.assessment-form input,
.assessment-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 14px;
  color: var(--dark);
  font: inherit;
  outline: none;
}

.assessment-form input:focus,
.assessment-form textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(22, 93, 255, 0.1);
}

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

.form-message {
  grid-column: 1 / -1;
  min-height: 24px;
  margin: 0;
  color: var(--gray);
}

.form-message.success {
  color: var(--good);
}

.form-message.error {
  color: var(--bad);
}

.footer {
  padding: 30px 0 46px;
  color: var(--gray);
  text-align: center;
}

.admin-shell,
.report-shell,
.payment-shell {
  padding: 42px 0 64px;
}

.admin-head {
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 24px;
}

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

.stats-grid strong {
  display: block;
  color: var(--brand);
  font-size: 34px;
  line-height: 1;
}

.stats-grid span {
  color: var(--gray);
}

.admin-panel {
  padding: 28px;
}

.admin-panel h2,
.report-section h2,
.report-grid h2 {
  margin: 0 0 18px;
  font-size: 22px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 780px;
}

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--gray);
  font-size: 13px;
}

td a,
.back-link {
  color: var(--brand);
  font-weight: 700;
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
}

.report-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
  padding: 34px;
  background: linear-gradient(135deg, var(--white), #eef5ff);
  border: 1px solid rgba(226, 232, 240, 0.85);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.score-card {
  display: grid;
  place-items: center;
  width: 138px;
  height: 138px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
}

.score-card span {
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
}

.score-card strong {
  font-size: 16px;
}

.report-section,
.report-grid article {
  padding: 28px;
  margin-bottom: 22px;
}

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

.report-grid ul,
.report-section ul {
  margin: 0;
  padding-left: 20px;
  color: var(--gray);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--brand);
  font-weight: 700;
}

.unlock-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 24px;
  padding: 20px;
  border: 1px solid rgba(22, 93, 255, 0.18);
  border-radius: 16px;
  background: var(--soft);
}

.unlock-box strong {
  display: block;
  margin-bottom: 4px;
  color: var(--dark);
  font-size: 18px;
}

.unlock-box p {
  margin: 0;
  color: var(--gray);
}

.payment-hero {
  max-width: 820px;
  margin: 0 auto 28px;
  text-align: center;
}

.payment-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.2;
}

.payment-hero p {
  margin: 0;
  color: var(--gray);
  font-size: 17px;
}

.payment-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.plan-card.featured {
  border-color: rgba(22, 93, 255, 0.35);
  box-shadow: var(--shadow);
}

.plan-badge {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.plan-badge.secondary {
  background: var(--soft);
  color: var(--brand);
}

.plan-card h2 {
  margin: 0 0 10px;
  font-size: 26px;
}

.price {
  margin-bottom: 18px;
  color: var(--brand);
  font-size: 42px;
  font-weight: 900;
}

.price span {
  margin-left: 4px;
  color: var(--gray);
  font-size: 18px;
  font-weight: 700;
}

.plan-card ul {
  margin: 0 0 24px;
  padding-left: 20px;
  color: var(--gray);
}

.success-panel {
  max-width: 760px;
  margin: 68px auto 0;
  padding: 48px;
  border: 1px solid rgba(22, 93, 255, 0.18);
  border-radius: 28px;
  background: var(--white);
  box-shadow: var(--shadow);
  text-align: center;
}

.success-mark {
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--good);
  color: #fff;
  font-size: 34px;
  font-weight: 900;
}

.success-panel h1 {
  margin: 0 0 12px;
  font-size: 42px;
}

.success-panel p {
  color: var(--gray);
}

.workspace-shell {
  padding: 28px 0 64px;
}

.workspace-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding: 16px 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.workspace-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.workspace-hero > div:first-child,
.subscription-card,
.today-panel,
.tool-hero,
.tool-form,
.tool-preview,
.keyword-board article,
.draft-card {
  border: 1px solid rgba(226, 232, 240, 0.85);
  border-radius: 22px;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.workspace-hero > div:first-child,
.subscription-card {
  padding: 32px;
}

.workspace-hero h1,
.tool-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1.2;
}

.workspace-hero p,
.tool-hero p,
.workspace-card p,
.draft-card p {
  margin: 0;
  color: var(--gray);
}

.subscription-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.subscription-card span {
  color: var(--gray);
  font-size: 14px;
}

.subscription-card strong {
  margin: 6px 0;
  color: var(--brand);
  font-size: 34px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-bottom: 24px;
}

.workspace-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  padding: 30px;
  border: 1px solid rgba(226, 232, 240, 0.85);
  border-radius: 22px;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.workspace-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.workspace-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--brand);
  font-weight: 900;
}

.workspace-card h2 {
  margin: 0 0 10px;
  font-size: 26px;
}

.workspace-card strong {
  margin-top: auto;
  color: var(--brand);
}

.today-panel {
  padding: 28px;
}

.today-panel h2,
.tool-preview h2,
.keyword-board h2,
.draft-card h2 {
  margin: 0 0 16px;
  font-size: 24px;
}

.today-panel ol,
.tool-preview ul,
.keyword-board ul {
  margin: 0;
  padding-left: 20px;
  color: var(--gray);
}

.tool-hero {
  margin-bottom: 24px;
  padding: 34px;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: start;
}

.tool-form {
  display: grid;
  gap: 16px;
  padding: 28px;
}

.tool-form label {
  display: grid;
  gap: 8px;
  color: var(--gray);
  font-size: 14px;
  font-weight: 700;
}

.tool-form input,
.tool-form textarea,
.tool-form select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 14px;
  color: var(--dark);
  font: inherit;
  outline: none;
}

.tool-preview,
.draft-card {
  padding: 28px;
}

.keyword-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.keyword-board article {
  padding: 28px;
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    border-radius: 24px;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    gap: 14px;
    flex-wrap: wrap;
  }

  .value-grid,
  .feature-grid,
  .step-grid,
  .stats-grid,
  .report-grid,
  .assessment,
  .payment-grid,
  .workspace-hero,
  .workspace-grid,
  .tool-layout,
  .keyword-board {
    grid-template-columns: 1fr;
  }

  .assessment {
    padding: 28px;
  }

  .assessment-form {
    grid-template-columns: 1fr;
  }

  .report-hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .unlock-box {
    align-items: flex-start;
    flex-direction: column;
  }

  .workspace-nav {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .site-shell,
  .admin-shell,
  .report-shell,
  .payment-shell,
  .workspace-shell {
    width: min(100% - 24px, 1240px);
  }

  .hero {
    padding-inline: 0;
  }

  .hero-copy {
    font-size: 16px;
  }

  .compare-row {
    grid-template-columns: 1fr;
  }

  .compare-row span {
    padding: 12px 16px;
  }

  .admin-head {
    align-items: flex-start;
    flex-direction: column;
  }
}