:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #f1f4fb;
  --ink: #101828;
  --muted: #667085;
  --line: #e5eaf2;
  --blue: #2458ff;
  --blue-soft: #eef3ff;
  --green: #1f9d75;
  --amber: #b7791f;
  --shadow: 0 18px 50px rgba(16, 24, 40, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(36, 88, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #fbfcff 0%, var(--bg) 58%, #f7f9fd 100%);
  color: var(--ink);
  font-family: "SF Pro Display", "Segoe UI", "PingFang SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: linear-gradient(135deg, #2458ff, #5f83ff);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  box-shadow: 0 18px 30px rgba(36, 88, 255, 0.22);
}

.brand-copy {
  display: grid;
  gap: 4px;
}

.brand-copy strong {
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.brand-eyebrow,
.eyebrow,
.card-kicker {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

.nav a.is-active,
.nav-cta {
  background: var(--blue-soft);
  border-color: rgba(36, 88, 255, 0.2);
  color: var(--blue);
}

.hero,
.portal-hero,
.section,
.portal-card,
.upload-shell {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 28px;
  padding: 36px;
}

.hero h1,
.portal-hero h1 {
  margin: 10px 0 0;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.lede {
  margin: 18px 0 0;
  max-width: 64ch;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.78;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 16px 28px rgba(36, 88, 255, 0.2);
}

.button.secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--ink);
}

.hero-points {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

.hero-panel {
  display: grid;
}

.preview-card {
  height: 100%;
  padding: 24px;
  border-radius: calc(var(--radius-xl) - 4px);
  background: linear-gradient(180deg, #0f1a32 0%, #14254d 100%);
  color: #eff4ff;
}

.preview-card h2 {
  margin: 12px 0 0;
  font-size: 1.5rem;
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.preview-stack {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.preview-line {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.preview-line strong {
  color: #9ab4ff;
  font-size: 1.05rem;
}

.preview-line h3,
.step-card h3,
.mode-card h3,
.output-card h3,
.focus-card h3,
.choice-item strong,
.mini-project strong,
.portal-card h2,
.cta-card h2 {
  margin: 0;
  font-size: 1.06rem;
  letter-spacing: -0.02em;
}

.preview-line p,
.step-card p,
.mode-card p,
.output-card p,
.focus-card p,
.choice-item p,
.mini-project p,
.cta-card p {
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.section {
  margin-top: 18px;
  padding: 28px;
}

.section-accent {
  background: linear-gradient(180deg, #fcfdff 0%, #f2f6ff 100%);
}

.section-heading h2 {
  margin: 10px 0 0;
  font-size: 1.9rem;
  letter-spacing: -0.04em;
}

.steps,
.focus-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.two-up,
.outputs,
.portal-grid {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

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

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

.step-card,
.mode-card,
.output-card,
.focus-card,
.cta-card,
.portal-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
}

.step-index {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 700;
}

.mode-lede {
  min-height: 56px;
}

.compact-list {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.cta-section {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: linear-gradient(180deg, #111a2f 0%, #15254a 100%);
  color: #eef3ff;
  border-color: transparent;
}

.cta-card p {
  color: #ccd9f7;
}

.portal-main {
  display: grid;
  gap: 18px;
}

.upload-main {
  display: grid;
  gap: 18px;
}

.portal-hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 32px;
}

.choice-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.choice-item,
.mini-project {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.project-list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.mini-project {
  display: grid;
  gap: 6px;
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.mini-project.is-selected {
  border-color: rgba(36, 88, 255, 0.22);
}

.mini-status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 700;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 700;
}

.status-board {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.status-summary h3 {
  margin: 0;
  font-size: 1.16rem;
  letter-spacing: -0.03em;
}

.status-summary p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.stage-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.stage-pill {
  display: grid;
  place-items: center;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
}

.stage-pill.is-done {
  background: var(--surface-soft);
  color: var(--ink);
}

.stage-pill.is-current {
  border-color: rgba(36, 88, 255, 0.26);
  background: var(--blue-soft);
  color: var(--blue);
}

.upload-shell {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: 18px;
  padding: 18px;
}

.upload-sidebar,
.upload-workspace {
  display: grid;
  gap: 18px;
}

.mode-toggle {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mode-option {
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  text-align: left;
  font: inherit;
  font-weight: 700;
}

.mode-option.is-active {
  border-color: rgba(36, 88, 255, 0.22);
  background: var(--blue-soft);
  color: var(--blue);
}

.helper-copy {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.upload-grid,
.inline-fields,
.validation-grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.upload-grid,
.inline-fields,
.validation-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.upload-box,
.validation-item {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px dashed #cfd8e7;
  border-radius: var(--radius-md);
  background: #fff;
}

.upload-box input {
  margin-top: 10px;
}

.upload-label,
.field span,
.validation-item strong {
  font-weight: 700;
}

.upload-desc,
.validation-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

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

.field input,
.field select {
  min-height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.result-box {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: var(--muted);
  line-height: 1.72;
}

@media (max-width: 1080px) {
  .hero,
  .upload-shell,
  .two-up,
  .portal-grid,
  .outputs,
  .steps,
  .focus-grid {
    grid-template-columns: 1fr;
  }

  .cta-card,
  .portal-hero {
    flex-direction: column;
    align-items: start;
  }

  .upload-grid,
  .inline-fields,
  .validation-grid,
  .stage-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding: 18px 0 42px;
  }

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

  .hero,
  .section,
  .portal-hero,
  .portal-card {
    padding: 22px;
  }

  .hero h1,
  .portal-hero h1 {
    font-size: clamp(2rem, 11vw, 3rem);
  }
}