:root {
  --bg: #f7f3ed;
  --bg-soft: #fbf8f4;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --surface-ink: rgba(16, 24, 40, 0.94);
  --text: #17202f;
  --muted: #5f6b7a;
  --line: rgba(23, 32, 47, 0.08);
  --shadow: 0 28px 80px rgba(54, 57, 66, 0.08);
  --accent-cyan: #11bfd5;
  --accent-cyan-soft: rgba(17, 191, 213, 0.12);
  --accent-green: #70c650;
  --accent-green-soft: rgba(112, 198, 80, 0.12);
  --accent-ink: #132135;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --font-display: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "IBM Plex Mono", "Cascadia Code", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  background:
    radial-gradient(circle at top left, rgba(17, 191, 213, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(112, 198, 80, 0.12), transparent 28%),
    linear-gradient(180deg, #fcfaf7 0%, var(--bg) 100%);
}

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

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 30px rgba(30, 34, 45, 0.06);
}

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

.brand-lockup img {
  width: 170px;
  height: auto;
  flex-shrink: 0;
}

.brand-lockup span {
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.site-nav a {
  padding: 8px 0;
}

.hero-section,
.survey-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 28px;
  align-items: center;
}

.hero-copy,
.survey-hero-visual,
.hero-visual-card,
.guidance-card,
.survey-section,
.info-card,
.product-card,
.workflow-step,
.agent-card,
.cta-banner,
.showcase-frame,
.summary-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 40px;
}

.eyebrow-pill,
.section-heading span,
.product-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: rgba(255, 255, 255, 0.68);
}

.hero-copy h1,
.survey-hero h1 {
  margin: 18px 0 14px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero-lead,
.section-heading p,
.survey-section-heading p,
.summary-card p,
.info-card p,
.workflow-step p,
.agent-card p,
.cta-banner p,
.guidance-card p,
.survey-hero p,
.field-help,
.submit-hint p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 28px;
}

.hero-badges span {
  padding: 12px 14px;
  border-radius: 999px;
  border: 1px solid rgba(23, 32, 47, 0.06);
  background: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

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

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.primary-button {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-cyan), #0f98e8);
  box-shadow: 0 12px 30px rgba(17, 191, 213, 0.24);
}

.secondary-button {
  color: var(--text);
  border-color: rgba(23, 32, 47, 0.12);
  background: rgba(255, 255, 255, 0.72);
}

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

.hero-visual-card,
.survey-hero-visual,
.showcase-frame {
  padding: 18px;
}

.diagram-card {
  display: grid;
  gap: 18px;
  padding: 26px;
}

.diagram-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 220px) minmax(0, 1fr);
  gap: 16px;
  align-items: center;
}

.diagram-node,
.diagram-center,
.workflow-ribbon span,
.role-chip,
.survey-note-card {
  border: 1px solid rgba(23, 32, 47, 0.08);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.78);
}

.diagram-node {
  padding: 22px;
}

.diagram-node span,
.note-kicker {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.diagram-node strong,
.diagram-center strong {
  display: block;
  margin-bottom: 10px;
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.diagram-node p,
.diagram-center span,
.survey-note-card ul {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.diagram-center {
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  background:
    radial-gradient(circle at center, rgba(17, 191, 213, 0.12), transparent 52%),
    rgba(255, 255, 255, 0.78);
}

.diagram-orb {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(17, 191, 213, 0.4), rgba(17, 191, 213, 0.08)),
    #fff;
  box-shadow:
    inset 0 0 0 8px rgba(255, 255, 255, 0.72),
    0 0 0 16px rgba(17, 191, 213, 0.08);
}

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

.workflow-ribbon span {
  padding: 14px 12px;
  text-align: center;
  font-size: 14px;
}

.info-strip,
.product-grid,
.agent-grid,
.survey-guidance,
.researcher-grid {
  display: grid;
  gap: 20px;
}

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

.product-grid,
.survey-guidance,
.researcher-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-strip {
  margin: 22px 0 0;
}

.info-card,
.product-card,
.workflow-step,
.agent-card,
.summary-card,
.guidance-card {
  padding: 28px;
}

.info-card h2,
.summary-card h3,
.workflow-step h3,
.agent-card h3,
.guidance-card h2,
.product-card h3 {
  margin: 0 0 10px;
}

.section-block {
  margin-top: 28px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 14px 0 10px;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.left-aligned {
  margin-bottom: 0;
}

.product-card ul,
.agent-card ul,
.guidance-card ul,
.summary-card ul,
.survey-section ul,
.survey-guidance ol {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.accent-cyan {
  background: linear-gradient(180deg, rgba(17, 191, 213, 0.1), rgba(255, 255, 255, 0.84));
}

.accent-green {
  background: linear-gradient(180deg, rgba(112, 198, 80, 0.12), rgba(255, 255, 255, 0.84));
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}

.workflow-step strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  border-radius: 18px;
  font-size: 18px;
  color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
}

.role-frame {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: flex-start;
  padding: 26px;
}

.role-chip {
  padding: 13px 18px;
  color: var(--accent-ink);
  font-weight: 700;
}

.role-frame p {
  width: 100%;
  margin: 6px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.agent-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.agent-portrait {
  width: 74px;
  height: 74px;
  padding: 8px;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(17, 191, 213, 0.12), rgba(112, 198, 80, 0.12));
}

.agent-portrait img {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  object-fit: cover;
}

.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 28px;
  padding: 28px 32px;
}

.cta-banner span,
.submit-hint strong {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.cta-banner h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.survey-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.survey-hero-visual {
  align-self: stretch;
}

.survey-note-card {
  padding: 28px;
}

.survey-note-card h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.survey-guidance {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.survey-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.survey-section {
  padding: 28px;
}

.survey-section-heading {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.survey-section-heading > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 16px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
}

.survey-section-heading h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.03em;
}

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

.question-block {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
  padding: 22px;
  border: 1px solid rgba(23, 32, 47, 0.06);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.62);
}

.question-block legend {
  padding: 0 8px;
  font-weight: 700;
  font-size: 17px;
}

.question-block label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text);
  line-height: 1.6;
}

.question-block input[type="text"],
.question-block textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(23, 32, 47, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.84);
  color: var(--text);
  font: inherit;
}

.question-block input[type="radio"],
.question-block input[type="checkbox"] {
  margin-top: 4px;
  accent-color: #10a8dd;
}

.rating-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rating-row label {
  min-width: 56px;
  justify-content: center;
  padding: 12px 14px;
  border: 1px solid rgba(23, 32, 47, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
}

.researcher-section {
  background: linear-gradient(180deg, rgba(17, 191, 213, 0.06), rgba(255, 255, 255, 0.84));
}

.survey-submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.submit-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.form-status {
  min-height: 28px;
  padding: 0 4px;
  color: var(--muted);
}

.form-status.is-success {
  color: #1d7f3b;
}

.form-status.is-error {
  color: #bf3f43;
}

@media (max-width: 1080px) {
  .hero-section,
  .survey-hero,
  .info-strip,
  .product-grid,
  .agent-grid,
  .survey-guidance,
  .summary-grid,
  .researcher-grid,
  .workflow-steps,
  .diagram-stage,
  .workflow-ribbon {
    grid-template-columns: 1fr;
  }

  .cta-banner,
  .survey-submit-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100vw - 20px, 1280px);
    padding-top: 14px;
  }

  .site-header {
    position: static;
    border-radius: 28px;
    padding: 14px 16px;
  }

  .site-nav {
    display: none;
  }

  .brand-lockup {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .brand-lockup img {
    width: 156px;
  }

  .hero-copy,
  .hero-visual-card,
  .survey-hero-visual,
  .info-card,
  .product-card,
  .workflow-step,
  .agent-card,
  .survey-section,
  .summary-card,
  .guidance-card,
  .cta-banner,
  .survey-submit-row {
    padding: 22px;
  }

  .hero-copy h1,
  .survey-hero h1 {
    font-size: 40px;
  }

  .section-heading h2,
  .cta-banner h2 {
    font-size: 30px;
  }

  .question-block {
    padding: 18px;
  }
}