/**
 * DOUBLE Machinery AI content style library.
 * Final scoped presentation layer for product, case and blog AI content.
 * Version: 2026-08-08 B
 */

.ai-product-detail,
.db-product-detail,
.product-optimized-content,
.ai-case-story,
.ai-blog-guide,
.ai-hotkey-entry {
  --ai-v2-primary: var(--site-theme-color, #025cc0);
  --ai-v2-primary-rgb: var(--site-theme-rgb, 2, 92, 192);
  --ai-v2-navy: #0b2848;
  --ai-v2-navy-deep: #071b33;
  --ai-v2-blue-soft: #edf5ff;
  --ai-v2-blue-pale: #f6faff;
  --ai-v2-cyan: #13a4c7;
  --ai-v2-orange: #e66b19;
  --ai-v2-orange-soft: #fff4e9;
  --ai-v2-green: #16845b;
  --ai-v2-green-soft: #ebf7f2;
  --ai-v2-red: #c9453d;
  --ai-v2-ink: #132d4c;
  --ai-v2-copy: #4c6077;
  --ai-v2-muted: #75859a;
  --ai-v2-line: #d9e4ef;
  --ai-v2-surface: #fff;
  --ai-v2-shadow: 0 14px 36px rgba(12, 45, 82, .09);
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  color: var(--ai-v2-copy);
  font-family: Arial, "Helvetica Neue", sans-serif;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.ai-product-detail *,
.db-product-detail *,
.product-optimized-content *,
.ai-case-story *,
.ai-blog-guide *,
.ai-hotkey-entry * {
  box-sizing: border-box;
}

.ai-product-detail h2,
.db-product-detail h2,
.product-optimized-content h2,
.ai-case-story h2,
.ai-blog-guide h2,
.ai-hotkey-entry h2 {
  position: relative;
  margin: 38px 0 17px;
  padding: 0 0 12px 18px;
  border-bottom: 1px solid var(--ai-v2-line);
  color: var(--ai-v2-ink);
  font-size: clamp(24px, 2.2vw, 32px);
  font-weight: 750;
  line-height: 1.28;
  letter-spacing: -.015em;
}

.ai-product-detail h2::before,
.db-product-detail h2::before,
.product-optimized-content h2::before,
.ai-case-story h2::before,
.ai-blog-guide h2::before,
.ai-hotkey-entry h2::before {
  position: absolute;
  top: .16em;
  bottom: .32em;
  left: 0;
  width: 5px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--ai-v2-primary), var(--ai-v2-cyan));
  content: "";
}

.ai-product-detail h3,
.db-product-detail h3,
.product-optimized-content h3,
.ai-case-story h3,
.ai-blog-guide h3,
.ai-hotkey-entry h3 {
  margin: 28px 0 11px;
  color: #164d87;
  font-size: clamp(19px, 1.6vw, 23px);
  font-weight: 700;
  line-height: 1.35;
}

.ai-product-detail .ai-grid,
.ai-product-detail .ai-feature-grid,
.db-product-detail .ai-grid,
.db-product-detail .ai-feature-grid,
.product-optimized-content .ai-grid,
.product-optimized-content .ai-feature-grid,
.ai-case-story .ai-grid,
.ai-case-story .ai-feature-grid,
.ai-blog-guide .ai-grid,
.ai-blog-guide .ai-feature-grid,
.ai-hotkey-entry .ai-grid,
.ai-hotkey-entry .ai-feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0 26px;
}

.ai-product-detail .ai-card,
.ai-product-detail .ai-feature-card,
.db-product-detail .ai-card,
.db-product-detail .ai-feature-card,
.product-optimized-content .ai-card,
.product-optimized-content .ai-feature-card,
.ai-case-story .ai-card,
.ai-case-story .ai-feature-card,
.ai-blog-guide .ai-card,
.ai-blog-guide .ai-feature-card,
.ai-hotkey-entry .ai-card,
.ai-hotkey-entry .ai-feature-card {
  position: relative;
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--ai-v2-line);
  border-radius: 16px;
  background: var(--ai-v2-surface);
  box-shadow: 0 9px 26px rgba(12, 45, 82, .065);
}

.ai-product-detail .ai-note,
.ai-product-detail .ai-takeaway,
.db-product-detail .ai-note,
.db-product-detail .ai-takeaway,
.product-optimized-content .ai-note,
.product-optimized-content .ai-takeaway,
.ai-case-story .ai-note,
.ai-case-story .ai-takeaway,
.ai-blog-guide .ai-note,
.ai-blog-guide .ai-takeaway,
.ai-hotkey-entry .ai-note,
.ai-hotkey-entry .ai-takeaway {
  position: relative;
  margin: 22px 0;
  padding: 18px 20px 18px 50px;
  border: 1px solid #cfe0f3;
  border-radius: 14px;
  background: var(--ai-v2-blue-soft);
  color: #315474;
}

.ai-product-detail .ai-note::before,
.ai-product-detail .ai-takeaway::before,
.db-product-detail .ai-note::before,
.db-product-detail .ai-takeaway::before,
.product-optimized-content .ai-note::before,
.product-optimized-content .ai-takeaway::before,
.ai-case-story .ai-note::before,
.ai-case-story .ai-takeaway::before,
.ai-blog-guide .ai-note::before,
.ai-blog-guide .ai-takeaway::before,
.ai-hotkey-entry .ai-note::before,
.ai-hotkey-entry .ai-takeaway::before {
  position: absolute;
  top: 17px;
  left: 17px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--ai-v2-primary);
  color: #fff;
  content: "i";
  font-size: 13px;
  font-weight: 800;
  line-height: 22px;
  text-align: center;
}

.ai-product-detail .ai-table-wrap,
.db-product-detail .ai-table-wrap,
.product-optimized-content .ai-table-wrap,
.ai-case-story .ai-table-wrap,
.ai-blog-guide .ai-table-wrap,
.ai-hotkey-entry .ai-table-wrap {
  width: 100%;
  max-width: 100%;
  margin: 22px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--ai-v2-line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 9px 26px rgba(12, 45, 82, .055);
  -webkit-overflow-scrolling: touch;
}

.ai-product-detail th,
.db-product-detail th,
.product-optimized-content th,
.ai-case-story th,
.ai-blog-guide th,
.ai-hotkey-entry th {
  background: var(--ai-v2-primary);
  color: #fff;
}

.ai-product-detail a,
.db-product-detail a,
.product-optimized-content a,
.ai-case-story a,
.ai-blog-guide a,
.ai-hotkey-entry a {
  color: var(--ai-v2-primary);
  text-decoration-color: rgba(var(--ai-v2-primary-rgb), .35);
  text-underline-offset: 3px;
}

/* Verified image composition */
.ai-product-detail .ai-content-media,
.db-product-detail .ai-content-media,
.product-optimized-content .ai-content-media,
.ai-case-story .ai-content-media,
.ai-blog-guide .ai-content-media,
.ai-hotkey-entry .ai-content-media {
  display: block;
  width: min(100%, 920px);
  margin: 28px auto 32px;
  padding: 0;
  overflow: hidden;
  border: 1px solid #d7e2ee;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 15px 36px rgba(9, 43, 81, .1);
}

.ai-product-detail .ai-content-media.ai-media-inline,
.db-product-detail .ai-content-media.ai-media-inline,
.product-optimized-content .ai-content-media.ai-media-inline,
.ai-case-story .ai-content-media.ai-media-inline,
.ai-blog-guide .ai-content-media.ai-media-inline,
.ai-hotkey-entry .ai-content-media.ai-media-inline {
  display: inline-block;
  width: auto;
  max-width: 100%;
  margin: .45em .55em;
  vertical-align: middle;
}

.ai-product-detail .ai-content-media img,
.db-product-detail .ai-content-media img,
.product-optimized-content .ai-content-media img,
.ai-case-story .ai-content-media img,
.ai-blog-guide .ai-content-media img,
.ai-hotkey-entry .ai-content-media img,
.ai-product-detail img.ai-content-image,
.db-product-detail img.ai-content-image,
.product-optimized-content img.ai-content-image,
.ai-case-story img.ai-content-image,
.ai-blog-guide img.ai-content-image,
.ai-hotkey-entry img.ai-content-image {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  object-fit: contain;
}

.ai-product-detail .ai-content-media figcaption,
.db-product-detail .ai-content-media figcaption,
.product-optimized-content .ai-content-media figcaption,
.ai-case-story .ai-content-media figcaption,
.ai-blog-guide .ai-content-media figcaption,
.ai-hotkey-entry .ai-content-media figcaption {
  padding: 10px 15px 12px;
  border-top: 1px solid #e2e9f1;
  background: #f8fafc;
  color: var(--ai-v2-muted);
  font-size: 13px;
  line-height: 1.55;
  text-align: center;
}

.ai-product-detail .ai-content-media-grid,
.db-product-detail .ai-content-media-grid,
.product-optimized-content .ai-content-media-grid,
.ai-case-story .ai-content-media-grid,
.ai-blog-guide .ai-content-media-grid,
.ai-hotkey-entry .ai-content-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  width: 100%;
  margin: 28px 0 32px;
}

.ai-product-detail .ai-content-media-grid > .ai-content-media,
.db-product-detail .ai-content-media-grid > .ai-content-media,
.product-optimized-content .ai-content-media-grid > .ai-content-media,
.ai-case-story .ai-content-media-grid > .ai-content-media,
.ai-blog-guide .ai-content-media-grid > .ai-content-media,
.ai-hotkey-entry .ai-content-media-grid > .ai-content-media {
  width: 100%;
  height: 100%;
  margin: 0;
}

.ai-product-detail .ai-media-offset,
.db-product-detail .ai-media-offset,
.product-optimized-content .ai-media-offset,
.ai-case-story .ai-media-offset,
.ai-blog-guide .ai-media-offset,
.ai-hotkey-entry .ai-media-offset {
  width: min(88%, 820px);
  margin-right: 0;
}

.ai-product-detail .ai-media-detail,
.db-product-detail .ai-media-detail,
.product-optimized-content .ai-media-detail,
.ai-case-story .ai-media-detail,
.ai-blog-guide .ai-media-detail,
.ai-hotkey-entry .ai-media-detail {
  width: min(82%, 760px);
}

/* Product: technical blueprint */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-technical {
  padding: clamp(20px, 3.2vw, 38px);
  border: 1px solid #c9dced;
  border-top: 5px solid var(--ai-v2-primary);
  border-radius: 18px;
  background-color: #fbfdff;
  background-image:
    linear-gradient(rgba(var(--ai-v2-primary-rgb), .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--ai-v2-primary-rgb), .045) 1px, transparent 1px);
  background-size: 24px 24px;
  box-shadow: var(--ai-v2-shadow);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-technical h2 {
  border-bottom: 2px solid var(--ai-v2-primary);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-technical .ai-card {
  border-left: 4px solid var(--ai-v2-primary);
  border-radius: 8px 15px 15px 8px;
  background: rgba(255, 255, 255, .95);
}

/* Product: production process */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-process {
  counter-reset: ai-v2-process;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-process :is(.ai-grid, .ai-feature-grid) {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-process :is(.ai-card, .ai-feature-card) {
  counter-increment: ai-v2-process;
  padding-top: 66px;
  border: 0;
  background: linear-gradient(155deg, #f7fbff, #e8f3ff);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-process :is(.ai-card, .ai-feature-card)::before {
  position: absolute;
  top: 18px;
  left: 20px;
  width: 34px;
  height: 34px;
  border-radius: 50% 50% 50% 9px;
  background: linear-gradient(135deg, var(--ai-v2-primary), var(--ai-v2-cyan));
  color: #fff;
  content: counter(ai-v2-process, decimal-leading-zero);
  font-size: 12px;
  font-weight: 800;
  line-height: 34px;
  text-align: center;
}

/* Product: feature cards */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-feature-grid :is(.ai-grid, .ai-feature-grid) {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-feature-grid :is(.ai-card, .ai-feature-card) {
  overflow: hidden;
  border: 0;
  border-radius: 18px;
  box-shadow: 0 15px 34px rgba(12, 45, 82, .11);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-feature-grid :is(.ai-card, .ai-feature-card)::before {
  display: block;
  width: 48px;
  height: 5px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--ai-v2-primary), #54a7ff);
  content: "";
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-feature-grid :is(.ai-card, .ai-feature-card):nth-child(3n+2)::before {
  background: linear-gradient(90deg, var(--ai-v2-cyan), #62d5e7);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-feature-grid :is(.ai-card, .ai-feature-card):nth-child(3n)::before {
  background: linear-gradient(90deg, var(--ai-v2-orange), #f2a05c);
}

/* Product: parameter comparison */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-comparison {
  padding: clamp(18px, 3vw, 34px);
  border: 1px solid #dce5ee;
  border-radius: 18px;
  background: #f4f7fa;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-comparison .ai-card {
  border-top: 4px solid var(--ai-v2-primary);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-comparison th {
  background: var(--ai-v2-navy);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-comparison tbody tr:hover td {
  background: #eaf3fd;
}

/* Product: application scenes */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-application :is(.ai-card, .ai-feature-card) {
  border: 0;
  background: linear-gradient(145deg, #edf6ff, #fff);
  box-shadow: inset 0 0 0 1px #d6e6f5, 0 10px 24px rgba(12, 45, 82, .06);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-application :is(.ai-card, .ai-feature-card):nth-child(even) {
  background: linear-gradient(145deg, #eef9f7, #fff);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-application :is(.ai-card, .ai-feature-card) :is(h3, h4)::after {
  display: block;
  width: 36px;
  height: 3px;
  margin-top: 8px;
  border-radius: 3px;
  background: var(--ai-v2-orange);
  content: "";
}

/* Product: project planning */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project {
  padding: clamp(20px, 3.4vw, 40px);
  border-radius: 20px;
  background: linear-gradient(145deg, var(--ai-v2-navy-deep), #0a4a7e 62%, #066a91);
  box-shadow: 0 20px 46px rgba(7, 35, 67, .2);
  color: rgba(255, 255, 255, .84);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project :is(h2, h3, h4) {
  border-color: rgba(255, 255, 255, .18);
  color: #fff;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project h2::before {
  background: var(--ai-v2-orange);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project :is(.ai-card, .ai-feature-card) {
  border-color: rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .1);
  box-shadow: none;
  color: rgba(255, 255, 255, .87);
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project :is(.ai-card, .ai-feature-card) :is(h3, h4) {
  color: #fff;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project a,
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-project li::marker {
  color: #9ee8ff;
}

/* Product: maintenance guide */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-maintenance :is(.ai-note, .ai-takeaway) {
  border-color: #f1c8a9;
  background: var(--ai-v2-orange-soft);
  color: #70472c;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-maintenance :is(.ai-note, .ai-takeaway)::before {
  background: var(--ai-v2-orange);
  content: "!";
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-maintenance :is(.ai-card, .ai-feature-card) {
  border-left: 4px solid var(--ai-v2-orange);
  background: linear-gradient(90deg, #fffaf5, #fff);
}

/* Product: compact data */
:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-compact {
  max-width: 920px;
  margin-right: auto;
  margin-left: auto;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-compact :is(.ai-grid, .ai-feature-grid) {
  display: block;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-compact :is(.ai-card, .ai-feature-card) {
  margin: 0 0 14px;
  padding: 16px 0;
  border-width: 0 0 1px;
  border-radius: 0;
  box-shadow: none;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-compact h2 {
  padding-left: 0;
}

:is(.ai-product-detail, .db-product-detail, .product-optimized-content).ai-style-compact h2::before {
  display: none;
}

/* Case: project dossier */
.ai-case-story.ai-case-style-dossier {
  padding: clamp(20px, 3.3vw, 38px);
  border: 1px solid var(--ai-v2-line);
  border-radius: 20px;
  background: linear-gradient(145deg, #fff, #f3f8fd);
  box-shadow: var(--ai-v2-shadow);
}

.ai-case-story.ai-case-style-dossier .ai-grid:first-of-type .ai-card {
  border: 0;
  background: linear-gradient(145deg, var(--ai-v2-navy), #124e83);
  color: #dceaf7;
}

.ai-case-story.ai-case-style-dossier .ai-grid:first-of-type .ai-card :is(h3, h4) {
  color: #fff;
}

/* Case: requirements and solution */
.ai-case-story.ai-case-style-challenge {
  counter-reset: ai-v2-case-step;
}

.ai-case-story.ai-case-style-challenge .ai-card {
  counter-increment: ai-v2-case-step;
  padding-left: 72px;
  border-left: 0;
}

.ai-case-story.ai-case-style-challenge .ai-card::before {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--ai-v2-primary), var(--ai-v2-cyan));
  color: #fff;
  content: counter(ai-v2-case-step);
  font-weight: 800;
  line-height: 36px;
  text-align: center;
}

.ai-case-story.ai-case-style-challenge .ai-card:nth-child(even) {
  background: #f3f8fd;
}

/* Case: delivery timeline */
.ai-case-story.ai-case-style-timeline {
  padding: clamp(18px, 3vw, 34px);
  border-radius: 18px;
  background: #f3f7fb;
}

.ai-case-story.ai-case-style-timeline .ai-timeline::before {
  background: linear-gradient(var(--ai-v2-primary), var(--ai-v2-cyan));
}

.ai-case-story.ai-case-style-timeline .ai-timeline > * {
  border-left: 4px solid var(--ai-v2-primary);
  box-shadow: 0 9px 22px rgba(12, 45, 82, .07);
}

/* Case: engineering acceptance */
.ai-case-story.ai-case-style-engineering {
  padding-top: 26px;
  border-top: 6px solid var(--ai-v2-primary);
}

.ai-case-story.ai-case-style-engineering :is(.ai-card, .ai-takeaway) {
  border-radius: 8px;
  background: #f2f6fa;
  box-shadow: none;
}

.ai-case-story.ai-case-style-engineering th {
  background: var(--ai-v2-navy);
}

/* Case: compact */
.ai-case-story.ai-case-style-compact {
  max-width: 900px;
  margin-right: auto;
  margin-left: auto;
}

.ai-case-story.ai-case-style-compact .ai-card {
  padding: 0 0 16px;
  border-width: 0 0 1px;
  border-radius: 0;
  box-shadow: none;
}

/* Blog: buyer guide */
.ai-blog-guide.ai-blog-style-guide {
  max-width: 940px;
  margin-right: auto;
  margin-left: auto;
}

.ai-blog-guide.ai-blog-style-guide > p:first-of-type {
  padding: 20px 23px;
  border-left: 4px solid var(--ai-v2-primary);
  border-radius: 0 14px 14px 0;
  background: var(--ai-v2-blue-pale);
  color: #365575;
  font-size: 17px;
}

.ai-blog-guide.ai-blog-style-guide .ai-toc {
  border-color: #cfe0f3;
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/* Blog: comparison decision */
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