:root {
  --ink: #18344f;
  --ink-strong: #102a43;
  --muted: #61758a;
  --subtle: #8a9caf;
  --line: #dce6ef;
  --surface: #ffffff;
  --surface-soft: #f5f8fb;
  --surface-blue: #eef7fd;
  --blue: #247ec2;
  --blue-dark: #17689f;
  --sky: #63b2e7;
  --green: #2f8f6b;
  --amber: #b77724;
  --coral: #c85f55;
  --shadow-sm: 0 8px 24px rgba(24, 52, 79, 0.08);
  --shadow-lg: 0 22px 58px rgba(24, 52, 79, 0.14);
  --content: 1200px;
  --reading: 780px;
  --header-height: 72px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 28px);
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.is-locked { overflow: hidden; }

a { color: inherit; text-decoration: none; }
button, input { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }
img { max-width: 100%; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 8px 12px;
  transform: translateY(-150%);
  border-radius: 4px;
  background: var(--ink-strong);
  color: #fff;
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  min-height: var(--header-height);
  border-bottom: 1px solid rgba(220, 230, 239, 0.9);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
}

.nav-wrap {
  width: min(var(--content), calc(100% - 40px));
  min-height: var(--header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink-strong);
  font-size: 1.08rem;
  font-weight: 800;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 6px;
  object-fit: cover;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  position: relative;
  padding: 22px 0 20px;
  color: #40576e;
  font-size: 0.92rem;
  font-weight: 650;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] { color: var(--blue); }

.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 15px;
  left: 0;
  height: 2px;
  background: var(--sky);
}

.nav-contact {
  min-height: 38px;
  padding: 7px 15px !important;
  border: 1px solid #bed5e8;
  border-radius: 6px;
  color: var(--blue) !important;
}

.nav-contact::after { display: none !important; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-size: 1.35rem;
}

.page-width {
  width: min(var(--content), calc(100% - 40px));
  margin: 0 auto;
}

.eyebrow {
  display: block;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.page-hero {
  padding: 72px 0 58px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(480px, 1.12fr);
  gap: 70px;
  align-items: center;
}

.page-hero h1,
.product-hero h1 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.page-hero h1 { max-width: 8em; }

.page-hero-lede,
.product-lede {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.hero-product-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid #d4e2ed;
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-lg);
}

.hero-product-shot img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-product-shot figcaption {
  padding: 12px 15px;
  border-top: 1px solid var(--line);
  background: #fbfdff;
  color: var(--subtle);
  font-size: 0.78rem;
}

.section-block { padding: 76px 0; }
.section-block.alt { background: var(--surface-soft); }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  line-height: 1.25;
  text-wrap: balance;
}

.section-head p {
  max-width: 540px;
  margin: 0;
  color: var(--muted);
}

.scene-toolbar {
  position: sticky;
  top: var(--header-height);
  z-index: 70;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 12px 28px -22px rgba(24, 52, 79, 0.35);
}

.scene-toolbar-inner {
  width: min(var(--content), calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 70px;
}

.scene-filters {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
}

.scene-filters::-webkit-scrollbar { display: none; }

.scene-filter {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 6px 13px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: #536a81;
  font-size: 0.85rem;
  font-weight: 650;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.scene-filter:hover { background: var(--surface-soft); color: var(--ink); }
.scene-filter.is-active {
  border-color: #a9cee9;
  background: var(--surface-blue);
  color: var(--blue-dark);
}

.scene-results {
  min-height: 70vh;
  background: #fff;
}

.scene-results-head {
  display: block;
  margin-bottom: 20px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.scene-results-head h1 {
  max-width: 780px;
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(2.1rem, 3.2vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: 0;
  text-wrap: balance;
}

.scene-summary {
  width: min(100%, 560px);
  padding: 16px 0 0;
}

.scene-summary p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.recommendation {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 0;
  overflow: hidden;
  border: 1px solid #0c2033;
  border-radius: 10px;
  background: linear-gradient(135deg, #163d61 0%, #102a43 58%, #0d2338 100%);
  box-shadow: 0 24px 54px rgba(16, 42, 67, 0.26);
  transition: box-shadow 0.22s ease;
}

.recommendation:hover {
  box-shadow: 0 28px 62px rgba(16, 42, 67, 0.34);
}

.recommendation[hidden],
.assessment-catalog-head[hidden] { display: none; }

.recommendation-main {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 34px;
  align-items: center;
  min-height: 360px;
  padding: 38px;
  transition: background 0.2s ease;
}

.recommendation-main:hover { background: rgba(255, 255, 255, 0.04); }

.recommendation-main:hover .text-link span[aria-hidden] { transform: translateX(4px); }

.recommendation-copy .eyebrow { color: #7fc3ef; }

.recommendation-copy h2 {
  margin: 0 0 14px;
  color: #fff;
  font-size: clamp(1.55rem, 2.2vw, 2.05rem);
  line-height: 1.28;
  text-wrap: balance;
}

.recommendation-copy p {
  margin: 0 0 24px;
  color: rgba(255, 255, 255, 0.72);
}

.recommendation .text-link { color: #8ecef5; }
.recommendation .text-link:hover { color: #c4e6fb; }

.recommendation-shot {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: var(--surface-blue);
}

.recommendation-shot img {
  display: block;
  width: 100%;
  height: 250px;
  padding: 16px;
  object-fit: contain;
  object-position: center;
}

.recommendation-shot figcaption {
  display: none;
}

.recommendation-side {
  padding: 36px 30px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

.recommendation-side h3 {
  margin: 0 0 18px;
  color: #fff;
  font-size: 1rem;
}

.supporting-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.supporting-list li {
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.supporting-list li:first-child { border-top: 0; padding-top: 2px; }

.supporting-list a {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.supporting-list a:hover strong { color: #8ecef5; }
.supporting-list a:hover .supporting-thumb { border-color: #8ecef5; }

.supporting-thumb {
  display: block;
  width: 68px;
  height: 68px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 6px;
  background: rgba(238, 247, 253, 0.96);
  transition: border-color 0.18s ease;
}

.supporting-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  padding: 7px;
  object-fit: contain;
}

.supporting-copy { display: block; min-width: 0; }
.supporting-list strong { display: block; color: rgba(255, 255, 255, 0.92); font-size: 0.92rem; line-height: 1.45; transition: color 0.18s ease; }
.supporting-copy > span { display: block; margin-top: 3px; color: rgba(255, 255, 255, 0.6); font-size: 0.78rem; line-height: 1.6; }

.assessment-catalog-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 64px;
  align-items: end;
  margin-top: 76px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.assessment-catalog-head h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  line-height: 1.25;
}

.assessment-catalog-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-weight: 750;
  transition: color 0.18s ease;
}

.text-link span[aria-hidden] { transition: transform 0.18s ease; }
.text-link:hover { color: var(--blue-dark); }
.text-link:hover span[aria-hidden] { transform: translateX(4px); }

.product-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.search-field {
  position: relative;
  width: min(100%, 360px);
}

.search-field input {
  width: 100%;
  min-height: 42px;
  padding: 9px 42px 9px 13px;
  border: 1px solid #cad8e4;
  border-radius: 6px;
  outline: none;
  background: #fff;
  color: var(--ink);
}

.search-field input:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 3px rgba(99, 178, 231, 0.18);
}

.search-clear {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 30px;
  height: 30px;
  transform: translateY(-50%);
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
}

.search-clear:hover { background: var(--surface-soft); }
.product-list {
  border-top: 1px solid var(--line);
}

.product-list[hidden],
.assessment-groups[hidden] { display: none; }

.product-row {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(280px, 1.35fr) 180px 28px;
  gap: 30px;
  align-items: center;
  min-height: 118px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line);
}

.product-row-media {
  display: none;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f5f8fb;
}

.product-row-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.assessment-groups { margin-top: 2px; }

.assessment-group {
  padding: 52px 0 18px;
  border-top: 1px solid var(--line);
}

.assessment-group-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  max-width: 760px;
  margin-bottom: 24px;
}

.assessment-group-head > span {
  padding-top: 6px;
  border-top: 2px solid var(--sky);
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.assessment-group-head h2 {
  margin: 0 0 6px;
  color: var(--ink-strong);
  font-size: 1.45rem;
  line-height: 1.35;
}

.assessment-group-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

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

.assessment-card-grid .product-row {
  grid-template-columns: minmax(0, 0.9fr) minmax(220px, 1.1fr);
  grid-template-areas:
    "title media"
    "description media"
    "tags media"
    "arrow media";
  grid-template-rows: auto 1fr auto auto;
  gap: 10px 24px;
  align-items: start;
  min-height: 310px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.assessment-card-grid .product-row.is-linked:hover {
  transform: translateY(-3px);
  border-color: #a9cdea;
  background: #fff;
  box-shadow: 0 18px 40px rgba(28, 58, 88, 0.13);
}

.assessment-card-grid .product-row h3 {
  grid-area: title;
  font-size: 1.12rem;
  line-height: 1.45;
}

.assessment-card-grid .scene-priority { display: none; }

.assessment-card-grid .product-row p {
  grid-area: description;
  font-size: 0.86rem;
  line-height: 1.72;
}

.assessment-card-grid .product-row-media {
  grid-area: media;
  display: block;
  align-self: stretch;
  min-height: 250px;
  padding: 14px;
  background: var(--surface-blue);
}

.assessment-card-grid .product-tags { grid-area: tags; }

.assessment-card-grid .product-row-arrow {
  grid-area: arrow;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 750;
  transition: transform 0.18s ease;
}

.assessment-card-grid .product-row.is-linked:hover .product-row-arrow { transform: translateX(4px); }

.assessment-card-grid .product-row-arrow::before {
  content: "查看产品";
  margin-right: 8px;
}

.product-row[hidden] { display: none; }

.product-row { transition: background 0.18s ease, box-shadow 0.18s ease; }

.product-row.is-linked:hover {
  background: #f6fafd;
  box-shadow: inset 3px 0 0 var(--sky);
}

.product-row h3 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 1rem;
  line-height: 1.5;
  transition: color 0.18s ease;
}

.product-row.is-linked:hover h3 { color: var(--blue-dark); }

.scene-priority {
  display: block;
  width: max-content;
  margin-bottom: 6px;
  padding-left: 8px;
  border-left: 2px solid var(--blue);
  color: var(--blue);
  font-size: 0.7rem;
  font-weight: 800;
  line-height: 1.2;
}

.scene-priority[hidden] { display: none; }

.product-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.product-tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 9px;
  border-left: 2px solid #8ec8e9;
  border-radius: 0 4px 4px 0;
  background: #f2f7fa;
  color: #506a80;
  font-size: 0.73rem;
  line-height: 1.3;
}

.product-row-arrow {
  color: var(--blue);
  font-size: 1.15rem;
  text-align: right;
}

.product-row-status {
  color: var(--subtle);
  font-size: 0.75rem;
  text-align: right;
}

.empty-state {
  display: none;
  padding: 38px 0;
  color: var(--muted);
  text-align: center;
}

.empty-state.is-visible { display: block; }

.selection-note {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 70px;
  align-items: start;
}

.selection-note h2 {
  margin: 0;
  color: var(--ink-strong);
  font-size: 2rem;
  line-height: 1.25;
}

.decision-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.decision-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.decision-list strong { color: var(--ink); }
.decision-list span { color: var(--muted); }

.site-footer {
  padding: 48px 0 30px;
  background: var(--ink-strong);
  color: rgba(255, 255, 255, 0.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 48px;
}

.footer-grid h2,
.footer-grid h3 { margin-top: 0; color: #fff; }
.footer-grid h2 { font-size: 1.45rem; }
.footer-grid h3 { font-size: 0.9rem; }
.footer-grid p,
.footer-grid a { font-size: 0.84rem; }
.footer-grid a { display: block; padding: 4px 0; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.14); font-size: 0.75rem; }

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 9px 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 750;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.primary-button { background: var(--blue); color: #fff; box-shadow: 0 10px 24px rgba(36,126,194,0.2); }
.primary-button:hover { background: var(--blue-dark); transform: translateY(-2px); }
.secondary-button { border-color: #bdd0df; background: #fff; color: var(--ink); }
.secondary-button:hover { border-color: var(--sky); background: var(--surface-blue); }

/* Product detail */
.product-hero {
  padding: 38px 0 0;
  background: #fff;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 44px;
  color: var(--subtle);
  font-size: 0.8rem;
}

.breadcrumb span:not(:last-child) { color: #c3d1df; }
.breadcrumb span:last-child { color: var(--muted); }
.breadcrumb a { transition: color 0.15s ease; }
.breadcrumb a:hover { color: var(--blue); }

.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 46px;
  align-items: start;
}

.product-hero-grid > div { max-width: 780px; }

.product-hero h1 {
  max-width: none;
  font-size: clamp(1.9rem, 2.6vw, 2.45rem);
  line-height: 1.3;
  white-space: nowrap;
}

.audience-line {
  margin-top: 24px;
  color: #49647b;
  font-size: 0.87rem;
}

.audience-line strong { color: var(--ink); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.product-proof {
  margin-top: 54px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-item {
  min-height: 124px;
  padding: 24px;
  border-left: 1px solid var(--line);
}

.proof-item:first-child { border-left: 0; }
.proof-item strong { display: block; color: var(--ink-strong); font-size: 1.32rem; letter-spacing: 0.01em; }
.proof-item span { display: block; margin-top: 5px; color: var(--muted); font-size: 0.8rem; }

.workflow-band {
  padding: 64px 0;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.workflow-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 26px;
}

.workflow-head h2 { margin: 0; color: var(--ink-strong); font-size: 1.75rem; }
.workflow-head p { max-width: 500px; margin: 0; color: var(--muted); font-size: 0.9rem; }

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(var(--steps, 5), minmax(0, 1fr));
  margin: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid #d3e0ec;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  list-style: none;
}

.workflow-steps li {
  position: relative;
  min-height: 114px;
  padding: 20px 18px;
  border-left: 1px solid #e3ecf4;
}

.workflow-steps li:first-child { border-left: 0; }
.workflow-steps b {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--surface-blue);
  color: var(--blue-dark);
  font-size: 0.72rem;
}
.workflow-steps strong { display: block; margin-top: 10px; color: var(--ink); font-size: 0.92rem; line-height: 1.45; }
.workflow-steps span { display: block; margin-top: 4px; color: var(--subtle); font-size: 0.72rem; }

.detail-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, var(--reading));
  gap: 86px;
  align-items: start;
  justify-content: center;
  padding-top: 78px;
  padding-bottom: 90px;
}

.toc {
  position: sticky;
  top: calc(var(--header-height) + 30px);
  padding-top: 8px;
}

.toc h2 {
  margin: 0 0 12px;
  color: var(--subtle);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
  list-style: none;
}

.toc a {
  display: block;
  padding: 8px 0 8px 15px;
  border-left: 2px solid transparent;
  transform: translateX(-1px);
  color: var(--muted);
  font-size: 0.81rem;
  line-height: 1.45;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.toc a:hover,
.toc a.is-active {
  border-left-color: var(--blue);
  color: var(--blue-dark);
}

.toc a.is-active { font-weight: 700; }

.article-body { min-width: 0; }

/* ── Product Definition Summary ── */
.product-definition {
  margin: 0 0 44px;
  padding: 24px 28px;
  border-left: 3px solid var(--blue);
  background: var(--surface-blue);
  border-radius: 0 8px 8px 0;
}

.product-definition-label {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-definition p {
  margin: 0;
  color: var(--ink);
  font-size: 0.95rem;
  line-height: 1.9;
}

.product-definition strong {
  color: var(--ink-strong);
  font-weight: 700;
}

.article-intro {
  margin: 0 0 74px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
  color: #4b647b;
  font-size: 1.08rem;
  line-height: 2;
}

.article-section {
  padding: 0 0 82px;
  scroll-margin-top: calc(var(--header-height) + 28px);
}

.section-number {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.article-section h2 {
  margin: 0 0 22px;
  color: var(--ink-strong);
  font-size: clamp(1.65rem, 3.2vw, 2.45rem);
  line-height: 1.35;
  text-wrap: balance;
}

.article-section h3 {
  margin: 40px 0 12px;
  color: var(--ink);
  font-size: 1.16rem;
}

.article-section p,
.article-section li {
  color: #506980;
  line-height: 1.95;
}

.article-section p { margin: 0 0 18px; }
.article-section strong { color: var(--ink); }
.article-section ul { padding-left: 1.2em; }
.article-section li { margin-bottom: 8px; }

.feature-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 28px 0 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature-facts div {
  padding: 18px 16px;
  border-left: 1px solid var(--line);
}

.feature-facts div:first-child { border-left: 0; }
.feature-facts strong { display: block; color: var(--ink-strong); font-size: 1.02rem; }
.feature-facts span { display: block; margin-top: 4px; color: var(--subtle); font-size: 0.75rem; }

.product-figure {
  margin: 30px 0 12px;
}

.image-zoom {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 1px solid #d5e1eb;
  border-radius: 8px;
  background: #fff;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.image-zoom img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.25s ease;
}

.image-zoom:hover {
  border-color: #aecfe7;
  box-shadow: 0 14px 34px rgba(24, 52, 79, 0.12);
}

.image-zoom:hover img { transform: scale(1.01); }

.product-figure figcaption {
  margin-top: 9px;
  color: var(--subtle);
  font-size: 0.76rem;
}

.dual-figure {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.dual-figure .product-figure { margin: 0; }
.dual-figure .image-zoom { height: 100%; }
.dual-figure img { height: 100%; object-fit: cover; object-position: top; }

.advisor-band {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  margin: 0 0 80px;
  padding: 30px;
  border-left: 4px solid var(--green);
  border-radius: 0 8px 8px 0;
  background: #f3f8f6;
}

.advisor-band img {
  width: 130px;
  height: 130px;
  border-radius: 6px;
  object-fit: cover;
}

.advisor-band h2 { margin: 0 0 8px; color: var(--ink-strong); font-size: 1.35rem; }
.advisor-band p { margin: 0; color: var(--muted); }

.detail-cta {
  padding: 72px 0;
  border-top: 1px solid var(--line);
  background: var(--surface-blue);
}

.detail-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.detail-cta h2 { margin: 0 0 9px; color: var(--ink-strong); font-size: 2rem; }
.detail-cta p { margin: 0; color: var(--muted); }

.related-products {
  padding: 70px 0;
  border-top: 1px solid var(--line);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.related-item {
  min-height: 150px;
  padding: 25px;
  border-left: 1px solid var(--line);
  transition: background 0.18s ease;
}

.related-item:hover { background: #fafcfe; }

.related-item:first-child { border-left: 0; }
.related-item span { color: var(--subtle); font-size: 0.72rem; }
.related-item h3 { margin: 8px 0 10px; color: var(--ink-strong); font-size: 1rem; line-height: 1.5; }
.related-item a { color: var(--blue); font-size: 0.82rem; font-weight: 700; }

/* Dialogs */
.modal-backdrop,
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 150;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(12, 30, 47, 0.7);
}

.modal-backdrop.is-open,
.lightbox.is-open { display: flex; }

.contact-dialog {
  position: relative;
  width: min(920px, 100%);
  max-height: min(720px, calc(100vh - 40px));
  overflow-y: auto;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow-lg);
}

.dialog-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 30px 20px;
  border-bottom: 1px solid var(--line);
}

.dialog-header h2 { margin: 0; color: var(--ink-strong); font-size: 1.55rem; }
.dialog-header p { margin: 4px 0 0; color: var(--muted); font-size: 0.85rem; }

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-size: 1.25rem;
}

.icon-button:hover { background: var(--surface-soft); }

.contact-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  padding: 26px 30px 32px;
}

.contact-option {
  padding: 0 24px;
  border-left: 1px solid var(--line);
  text-align: center;
}

.contact-option:first-child { border-left: 0; }
.contact-option img { display: block; width: 190px; height: 190px; margin: 0 auto 14px; object-fit: contain; }
.contact-option strong { display: block; color: var(--ink-strong); }
.contact-option span { display: block; color: var(--muted); font-size: 0.78rem; }

.lightbox {
  flex-direction: column;
  gap: 12px;
}

.lightbox-inner {
  position: relative;
  width: min(1180px, 100%);
  max-height: calc(100vh - 70px);
}

.lightbox img {
  display: block;
  width: 100%;
  max-height: calc(100vh - 88px);
  object-fit: contain;
  border-radius: 4px;
  background: #fff;
}

.lightbox .icon-button {
  position: absolute;
  top: 10px;
  right: 10px;
  border-color: rgba(255,255,255,0.3);
  background: rgba(14,35,54,0.78);
  color: #fff;
}

.lightbox-caption { color: rgba(255,255,255,0.85); font-size: 0.8rem; text-align: center; }

.floating-contact {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 80;
  min-height: 44px;
  padding: 9px 15px;
  border: 0;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  font-weight: 750;
  box-shadow: 0 12px 30px rgba(24, 52, 79, 0.22);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.floating-contact:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(24, 52, 79, 0.26);
}

@media (max-width: 1040px) {
  .page-hero-grid,
  .product-hero-grid { grid-template-columns: 1fr; gap: 38px; }
  .page-hero h1 { max-width: 12em; }
  .product-hero h1 { white-space: normal; }
  .recommendation { grid-template-columns: 1fr; }
  .recommendation-side { border-top: 1px solid rgba(255, 255, 255, 0.14); border-left: 0; }
  .detail-shell { grid-template-columns: 190px minmax(0, 1fr); gap: 50px; }
  .product-row { grid-template-columns: minmax(220px, 0.9fr) minmax(250px, 1.2fr) 160px 28px; gap: 20px; }
  .assessment-card-grid .product-row,
  .assessment-card-grid .product-row:last-child:nth-child(odd) {
    grid-template-columns: minmax(0, 0.9fr) minmax(180px, 1.1fr);
    grid-template-areas:
      "title media"
      "description media"
      "tags media"
      "arrow media";
    grid-template-rows: auto 1fr auto auto;
    gap: 10px 18px;
  }
}

@media (max-width: 820px) {
  :root { --header-height: 64px; }
  .nav-wrap { min-height: var(--header-height); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .main-nav {
    position: absolute;
    top: var(--header-height);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 16px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: var(--shadow-sm);
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 12px 6px; }
  .main-nav a[aria-current="page"]::after { display: none; }
  .nav-contact { margin-top: 5px; text-align: center; }

  .page-hero { padding: 54px 0 44px; }
  .page-hero-grid { grid-template-columns: 1fr; }
  .page-hero h1,
  .product-hero h1 { font-size: 2.55rem; }
  .section-block { padding: 56px 0; }
  .section-head { display: block; }
  .section-head p { margin-top: 12px; }

  .scene-toolbar { position: static; }
  .scene-toolbar-inner { min-height: 0; padding: 12px 0 5px; }
  .scene-filters { width: 100%; }
  .scene-results-head { display: block; }
  .scene-summary { padding-top: 18px; }

  .recommendation-main { grid-template-columns: 1fr; min-height: 0; padding: 28px; }
  .recommendation-shot img { height: auto; }
  .assessment-catalog-head { grid-template-columns: 1fr; gap: 12px; margin-top: 56px; }
  .product-tools { align-items: stretch; flex-direction: column; }
  .search-field { width: 100%; }
  .product-row { grid-template-columns: minmax(0, 1fr) 26px; gap: 9px 16px; min-height: 0; padding: 22px 2px; }
  .product-row p { grid-column: 1 / -1; }
  .product-tags { grid-column: 1 / -1; }
  .product-row-status { grid-column: 2; grid-row: 1; }
  .product-row-arrow { grid-column: 2; grid-row: 1; }
  .assessment-card-grid { grid-template-columns: 1fr; }
  .assessment-card-grid .product-row,
  .assessment-card-grid .product-row:last-child:nth-child(odd) {
    grid-column: auto;
    grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
    grid-template-areas:
      "title media"
      "description media"
      "tags media"
      "arrow media";
    grid-template-rows: auto 1fr auto auto;
    min-height: 300px;
    padding: 24px;
  }
  .assessment-card-grid .product-row.is-linked:hover { padding: 24px; }
  .assessment-card-grid .product-row p { grid-column: auto; }
  .assessment-card-grid .product-row-media {
    min-height: 240px;
    aspect-ratio: auto;
  }
  .assessment-card-grid .product-tags { grid-column: auto; }
  .assessment-card-grid .product-row-arrow { grid-column: auto; grid-row: auto; }
  .selection-note { grid-template-columns: 1fr; gap: 28px; }

  .product-hero { padding-top: 24px; }
  .breadcrumb { margin-bottom: 28px; }
  .product-hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .product-proof { margin-top: 42px; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-item:nth-child(odd) { border-left: 0; }
  .proof-item:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .workflow-head { display: block; }
  .workflow-head p { margin-top: 9px; }
  .workflow-steps { display: grid; grid-template-columns: repeat(2, 1fr); }
  .workflow-steps li { border-top: 1px solid #e3ecf4; }
  .workflow-steps li:nth-child(-n + 2) { border-top: 0; }
  .workflow-steps li:nth-child(odd) { border-left: 0; }

  .detail-shell { display: block; padding-top: 0; }
  .toc {
    position: sticky;
    top: var(--header-height);
    z-index: 60;
    margin: 0 -20px 48px;
    padding: 0 20px;
    overflow-x: auto;
    border-bottom: 1px solid var(--line);
    background: rgba(255,255,255,0.97);
  }
  .toc h2 { display: none; }
  .toc ol { display: flex; width: max-content; border-left: 0; }
  .toc a { padding: 13px 12px; border-bottom: 2px solid transparent; border-left: 0; transform: none; white-space: nowrap; }
  .toc a.is-active { border-bottom-color: var(--blue); border-left-color: transparent; }
  .article-intro { margin-bottom: 56px; }
  .product-definition { padding: 20px 22px; margin-bottom: 36px; }
  .article-section { padding-bottom: 64px; }
  .dual-figure { grid-template-columns: 1fr; }
  .advisor-band { grid-template-columns: 95px 1fr; padding: 22px; }
  .advisor-band img { width: 95px; height: 95px; }
  .detail-cta-inner { align-items: flex-start; flex-direction: column; gap: 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-item { border-top: 1px solid var(--line); border-left: 0; }
  .related-item:first-child { border-top: 0; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
  .contact-options { grid-template-columns: 1fr; }
  .contact-option { display: grid; grid-template-columns: 120px 1fr; align-items: center; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line); border-left: 0; text-align: left; }
  .contact-option:first-child { border-top: 0; }
  .contact-option img { width: 120px; height: 120px; margin: 0; }
}

@media (max-width: 560px) {
  .page-width,
  .nav-wrap,
  .scene-toolbar-inner { width: min(100% - 28px, var(--content)); }
  .brand span { font-size: 1rem; }
  .page-hero h1,
  .product-hero h1 { font-size: 2.08rem; }
  .page-hero-lede,
  .product-lede { font-size: 0.98rem; }
  .page-hero { padding-top: 44px; }
  .scene-results { padding-top: 44px; }
  .scene-results-head h1 { font-size: 2.08rem; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .primary-button,
  .secondary-button { width: 100%; }
  .recommendation-main { padding: 22px; }
  .recommendation-copy h2 { font-size: 1.35rem; }
  .recommendation-side { padding: 25px 22px; }
  .assessment-group { padding-top: 42px; }
  .assessment-group-head { grid-template-columns: 32px minmax(0, 1fr); gap: 10px; }
  .assessment-group-head h2 { font-size: 1.25rem; }
  .assessment-card-grid .product-row,
  .assessment-card-grid .product-row:last-child:nth-child(odd) {
    grid-template-columns: 1fr;
    grid-template-areas:
      "title"
      "description"
      "media"
      "tags"
      "arrow";
    gap: 14px;
    min-height: 0;
    padding: 20px;
  }
  .assessment-card-grid .product-row.is-linked:hover { padding: 20px; }
  .assessment-card-grid .product-row-media {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }
  .selection-note h2 { font-size: 1.7rem; }
  .decision-list li { grid-template-columns: 1fr; gap: 4px; }

  .proof-grid { grid-template-columns: 1fr; }
  .toc {
    margin-right: -14px;
    margin-left: -14px;
    padding-right: 14px;
    padding-left: 14px;
  }
  .proof-item,
  .proof-item:nth-child(odd) { min-height: 0; border-top: 1px solid var(--line); border-left: 0; }
  .proof-item:first-child { border-top: 0; }
  .workflow-band { padding: 48px 0; }
  .workflow-steps { grid-template-columns: 1fr; }
  .workflow-steps li,
  .workflow-steps li:nth-child(-n + 2),
  .workflow-steps li:nth-child(odd) { min-height: 0; border-top: 1px solid #e3ecf4; border-left: 0; }
  .workflow-steps li:first-child { border-top: 0; }
  .feature-facts { grid-template-columns: 1fr; }
  .feature-facts div { border-top: 1px solid var(--line); border-left: 0; }
  .feature-facts div:first-child { border-top: 0; }
  .advisor-band { grid-template-columns: 1fr; }
  .advisor-band img { width: 110px; height: 110px; }
  .detail-cta h2 { font-size: 1.65rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
  .floating-contact { right: 12px; bottom: 12px; min-height: 42px; padding: 8px 12px; }
  .dialog-header { padding: 22px 20px 16px; }
  .contact-options { padding: 10px 20px 22px; }
  .contact-option { grid-template-columns: 92px 1fr; }
  .contact-option img { width: 92px; height: 92px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}