:root {
  --bg: #edf2f8;
  --paper: rgba(255, 255, 255, 0.92);
  --paper-strong: #ffffff;
  --line: rgba(16, 37, 73, 0.1);
  --line-strong: rgba(16, 37, 73, 0.16);
  --navy: #132a4f;
  --navy-2: #1d4376;
  --navy-3: #325f95;
  --gold: #c79638;
  --gold-soft: rgba(199, 150, 56, 0.14);
  --ink: #18304f;
  --ink-soft: #5f718d;
  --success: #1f7a5d;
  --shadow-lg: 0 28px 70px rgba(18, 40, 77, 0.12);
  --shadow-md: 0 18px 40px rgba(18, 40, 77, 0.09);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1540px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "Source Han Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(49, 93, 148, 0.18), transparent 26%),
    radial-gradient(circle at 88% 8%, rgba(199, 150, 56, 0.14), transparent 18%),
    linear-gradient(180deg, #f9fbff 0%, #eef3f9 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(19, 42, 79, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 42, 79, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: -2;
}
body::after {
  content: "";
  position: fixed;
  inset: auto auto 8% 4%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 101, 160, 0.12), transparent 72%);
  filter: blur(10px);
  pointer-events: none;
  z-index: -1;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.report-shell {
  width: 100%;
  padding: 16px 0 40px;
}

.report-topbar {
  position: sticky;
  top: 14px;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 18px 22px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(249, 251, 255, 0.88);
  backdrop-filter: blur(20px);
  box-shadow: 0 14px 32px rgba(18, 40, 77, 0.08);
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(140deg, var(--navy), var(--navy-3));
  color: #fff;
  font-family: "STZhongsong", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 20px;
  letter-spacing: 2px;
  box-shadow: 0 12px 28px rgba(19, 42, 79, 0.26);
}

.brand-text {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.brand-text strong {
  font-size: 17px;
  line-height: 1.1;
  font-weight: 800;
}

.brand-text small {
  color: var(--ink-soft);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.topbar-actions a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
  transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.topbar-actions a:hover {
  color: var(--navy);
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-1px);
}

.report-layout {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 24px;
  width: min(calc(100% - 32px), var(--max));
  margin: 22px auto 0;
  align-items: start;
}

.report-sidebar {
  position: sticky;
  top: 106px;
  display: grid;
  gap: 18px;
}

.sidebar-panel,
.chapter-card,
.info-card,
.service-card,
.cert-highlight,
.cert-card,
.project-summary,
.project-table-wrap,
.feedback-card,
.contact-grid div {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-md);
}

.sidebar-panel {
  padding: 22px;
  border-radius: var(--radius-xl);
}

.panel-label,
.eyebrow,
.chapter-number,
.section-kicker,
.cover-tag {
  margin: 0 0 12px;
  color: var(--navy-3);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.chapter-number,
.section-kicker,
.cover-tag {
  margin-bottom: 14px;
  color: var(--navy-2);
  font-size: 15px;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.brand-panel h2,
.chapter-card h1,
.chapter-head h2,
.info-card h3,
.cert-copy h3,
.project-card h3 {
  margin: 0;
  color: var(--navy);
  font-family: "STZhongsong", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
}

.brand-panel h2 {
  font-size: 1.35rem;
  line-height: 1.3;
}

.brand-panel p:last-child {
  margin: 14px 0 0;
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 14px;
}

.chapter-nav {
  display: grid;
  gap: 8px;
}

.chapter-link {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 11px 14px;
  border-radius: 14px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 700;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.chapter-link:hover {
  background: rgba(255, 255, 255, 0.88);
  color: var(--navy);
  transform: translateX(2px);
}

.chapter-link.active {
  background: linear-gradient(135deg, rgba(19, 42, 79, 0.98), rgba(50, 95, 149, 0.94));
  color: #fff;
  box-shadow: 0 16px 30px rgba(19, 42, 79, 0.18);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.quick-grid article {
  padding: 14px 12px;
  border-radius: 16px;
  background: rgba(246, 249, 255, 0.9);
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.quick-grid strong {
  display: block;
  color: var(--navy);
  font-size: 1rem;
}

.quick-grid span {
  display: block;
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 12px;
}

.sidebar-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--navy), var(--navy-3));
  color: #fff;
  box-shadow: 0 18px 34px rgba(19, 42, 79, 0.22);
}

.sidebar-cta:hover,
.button:hover {
  transform: translateY(-2px);
}

.report-content {
  display: grid;
  gap: 24px;
}

.chapter-card {
  padding: 32px;
  border-radius: 34px;
}

.chapter-card[data-reveal],
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

.reveal-in {
  opacity: 1;
  transform: translateY(0);
}

.chapter-head {
  max-width: none;
}

.chapter-head h2 {
  font-size: clamp(1.9rem, 2.9vw, 3rem);
  line-height: 1.16;
  white-space: nowrap;
}

.chapter-lead,
.cover-lead,
.capability-list span,
.service-card p,
.summary-item p,
.operation-strip p,
.cert-copy p,
.project-card .section-note,
.feedback-card span,
.contact-grid span,
.project-table td,
.project-table th,
.table-title span {
  color: var(--ink-soft);
  line-height: 1.8;
}

.chapter-lead,
.cover-lead {
  margin: 16px 0 0;
  max-width: 78ch;
  font-size: 1rem;
}

.cover-card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.96), rgba(245, 248, 254, 0.92)),
    radial-gradient(circle at top right, rgba(199, 150, 56, 0.15), transparent 26%);
}

.cover-card::after {
  content: "";
  position: absolute;
  inset: auto 32px 32px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 95, 149, 0.12), transparent 72%);
  pointer-events: none;
}

.cover-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 28px;
  align-items: start;
}

.cover-copy h1 {
  font-size: clamp(3rem, 5.2vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button.primary {
  background: linear-gradient(135deg, var(--navy), var(--navy-3));
  color: #fff;
  box-shadow: 0 16px 30px rgba(19, 42, 79, 0.22);
}

.button.ghost {
  color: var(--navy);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(19, 42, 79, 0.12);
}

.cover-advantage {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.cover-advantage article {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.cover-advantage span {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--gold-soft);
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

.cover-advantage h3 {
  margin: 16px 0 10px;
  color: var(--navy);
  font-size: 1.05rem;
}

.cover-advantage p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.cover-media {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: var(--paper-strong);
  box-shadow: var(--shadow-lg);
}

.cover-media img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
}

.cover-metric-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.cover-metric-band article {
  padding: 18px 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(242, 247, 255, 0.92));
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.cover-metric-band span {
  display: block;
  color: var(--ink-soft);
  font-size: 13px;
}

.cover-metric-band strong {
  display: block;
  margin-top: 8px;
  color: var(--navy);
  font-size: 1.45rem;
}

.summary-grid,
.strength-grid,
.report-service-grid,
.operation-strip,
.feedback-documents,
.contact-grid {
  display: grid;
  gap: 18px;
}

.summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.summary-item {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(244, 248, 255, 0.92));
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.summary-item span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(50, 95, 149, 0.1);
  color: var(--navy-3);
  font-size: 12px;
  font-weight: 800;
}

.summary-item h3 {
  margin: 16px 0 10px;
  color: var(--navy);
  font-size: 1.08rem;
}

.summary-item p {
  margin: 0;
  font-size: 14px;
}

.strength-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.info-card {
  padding: 28px;
  border-radius: 28px;
}

.info-card h3 {
  margin-top: 0;
  font-size: 1.55rem;
}

.story-card p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  line-height: 1.85;
}

.quote-strip {
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--navy), var(--navy-3));
  color: #fff;
}

.quote-strip span {
  display: block;
  margin-bottom: 8px;
  color: rgba(229, 238, 255, 0.82);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.quote-strip strong {
  display: block;
  font-size: 1.05rem;
}

.capability-list {
  display: grid;
  gap: 16px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.capability-list li {
  padding: 18px;
  border-radius: 18px;
  background: rgba(246, 249, 255, 0.92);
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.capability-list strong {
  display: block;
  margin-bottom: 8px;
  color: var(--navy);
}

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

.service-card {
  padding: 24px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(243, 247, 255, 0.92)),
    radial-gradient(circle at top right, rgba(199, 150, 56, 0.18), transparent 34%);
}

.service-index {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--gold-soft);
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

.service-card h3 {
  margin: 18px 0 10px;
  color: var(--navy);
  font-size: 1.08rem;
}

.service-card p {
  margin: 0;
  font-size: 14px;
}

.scene-band {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.scene-band span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid rgba(19, 42, 79, 0.08);
  background: rgba(255, 255, 255, 0.88);
  color: var(--navy);
  font-size: 15px;
  font-weight: 800;
  text-align: center;
}

.operation-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 22px;
}

.operation-strip article {
  padding: 20px 22px;
  border-radius: 22px;
  background: rgba(247, 250, 255, 0.92);
  border: 1px solid rgba(19, 42, 79, 0.08);
}

.operation-strip strong {
  display: block;
  color: var(--navy);
  font-size: 15px;
}

.operation-strip p {
  margin: 10px 0 0;
  font-size: 14px;
}

.cert-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.cert-highlight {
  display: grid;
  grid-template-columns: minmax(320px, 430px) 1fr;
  gap: 24px;
  padding: 26px;
  border-radius: 28px;
}

.cert-highlight.light {
  background: linear-gradient(180deg, rgba(255, 248, 238, 0.96), rgba(255, 255, 255, 0.92));
}

.cert-figure {
  overflow: hidden;
  border-radius: 20px;
  background: #f7f9fd;
  border: 1px solid rgba(19, 42, 79, 0.08);
  display: grid;
  place-items: center;
  min-height: 420px;
}

.cert-figure img,
.cert-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: translateY(var(--cert-shift, 0)) scale(1.04);
  transition: transform 0.45s ease, filter 0.45s ease;
  will-change: transform;
}

.cert-copy h3 {
  margin: 8px 0 12px;
  font-size: 1.35rem;
}

.cert-copy p {
  margin: 0;
  font-size: 14px;
}

.cert-grid {
  grid-column: 1 / -1;
  display: grid;
  gap: 18px;
}

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

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

.cert-card {
  display: grid;
  gap: 14px;
  padding: 22px;
  border-radius: 24px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-grid-system .cert-card {
  padding: 24px;
}

.cert-card img {
  height: 320px;
}

.cert-grid-system .cert-card img {
  height: 420px;
}

.cert-card figcaption {
  text-align: center;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.cert-highlight:hover .cert-figure img,
.cert-card:hover img {
  transform: translateY(var(--cert-shift, 0)) scale(1.09);
  filter: saturate(1.04);
}

.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 52px rgba(20, 43, 78, 0.12);
}

.project-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
  padding: 22px;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--navy), #264f82);
  color: #fff;
}

.project-summary div {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-summary strong {
  display: block;
  font-size: clamp(1.4rem, 2.8vw, 2.3rem);
}

.project-summary span {
  display: block;
  margin-top: 8px;
  color: rgba(222, 234, 255, 0.86);
  font-size: 13px;
}

.filter-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.filter-chip {
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid rgba(19, 42, 79, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.filter-chip:hover {
  transform: translateY(-1px);
  color: var(--navy);
}

.filter-chip.active {
  background: linear-gradient(135deg, var(--navy), var(--navy-3));
  color: #fff;
  border-color: transparent;
}

.featured-projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.project-card {
  display: grid;
  gap: 18px;
  padding: 26px;
  border-radius: 26px;
}

.project-card .tag {
  justify-self: start;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--gold-soft);
  color: #9a7428;
  font-size: 12px;
  font-weight: 800;
}

.project-card h3 {
  font-size: 1.34rem;
  line-height: 1.3;
}

.section-note {
  margin-top: 10px;
  font-size: 14px;
}

.project-meta {
  display: grid;
  gap: 10px;
}

.project-meta div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
}

.project-meta strong {
  color: var(--ink);
}

.project-table-wrap {
  margin-top: 22px;
  padding: 28px;
  border-radius: 28px;
}

.table-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 16px;
}

.table-title h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1.28rem;
}

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

.project-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}

.project-table th,
.project-table td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(19, 42, 79, 0.08);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
}

.project-table th {
  color: var(--navy);
}

.report-gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.gallery-card {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-md);
}

.gallery-card-large {
  grid-column: span 6;
  grid-row: span 2;
  min-height: 580px;
}

.report-gallery-grid .gallery-card:not(.gallery-card-large) {
  grid-column: span 3;
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.gallery-card:hover img {
  transform: scale(1.05);
}

.gallery-card figcaption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(8, 22, 44, 0.74);
  color: #eff4ff;
  font-size: 13px;
  backdrop-filter: blur(8px);
}

.feedback-documents {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
}

.feedback-card {
  display: grid;
  gap: 14px;
  padding: 16px;
  border-radius: 24px;
}

.feedback-card img {
  width: 100%;
  border-radius: 18px;
  background: #fff;
}

.feedback-card.document img {
  aspect-ratio: 4 / 5;
  object-fit: contain;
}

.feedback-card.photo img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feedback-card figcaption {
  display: grid;
  gap: 8px;
}

.feedback-card strong {
  color: var(--navy);
  font-size: 1rem;
}

.feedback-card span {
  font-size: 13px;
}

.feedback-featured {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 18px;
  margin-top: 18px;
}

.feedback-side-stack {
  display: grid;
  gap: 18px;
}

.contact-card {
  background: linear-gradient(145deg, rgba(18, 40, 77, 0.98), rgba(35, 78, 130, 0.96));
  color: #fff;
}

.contact-card .chapter-number,
.contact-card .chapter-lead {
  color: rgba(214, 229, 255, 0.86);
}

.contact-card .chapter-head h2 {
  color: #fff;
}

.contact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.contact-grid div {
  padding: 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
}

.contact-grid span {
  display: block;
  color: rgba(211, 225, 252, 0.82);
  font-size: 12px;
}

.contact-grid strong {
  display: block;
  margin-top: 8px;
  color: #fff;
  font-size: 15px;
  line-height: 1.7;
}

@media (max-width: 1380px) {
  .chapter-head h2 {
    white-space: normal;
  }

  .cover-copy h1 {
    font-size: clamp(2.7rem, 4.4vw, 4.2rem);
  }
}

@media (max-width: 1200px) {
  .report-layout {
    grid-template-columns: 1fr;
  }

  .report-sidebar {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .chapter-nav {
    grid-column: span 2;
  }

  .cover-grid,
  .strength-grid,
  .cert-layout,
  .feedback-featured {
    grid-template-columns: 1fr;
  }

  .cover-advantage,
  .report-service-grid,
  .operation-strip,
  .feedback-documents,
  .contact-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cover-metric-band,
  .project-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cert-highlight {
    grid-template-columns: 1fr;
  }

  .cert-figure {
    min-height: 360px;
  }

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

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

  .report-gallery-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .gallery-card-large,
  .report-gallery-grid .gallery-card:not(.gallery-card-large) {
    grid-column: span 3;
    grid-row: span 1;
    min-height: 340px;
  }
}

@media (max-width: 760px) {
  .report-shell {
    padding-top: 10px;
  }

  .report-topbar {
    width: min(calc(100% - 20px), var(--max));
    padding: 14px 16px;
    border-radius: 24px;
  }

  .topbar-actions {
    display: none;
  }

  .brand-mark {
    width: 48px;
    height: 48px;
    font-size: 18px;
  }

  .brand-text strong {
    font-size: 15px;
  }

  .brand-text small {
    letter-spacing: 0.1em;
  }

  .report-layout {
    width: min(calc(100% - 20px), var(--max));
    gap: 18px;
    margin-top: 16px;
  }

  .report-sidebar {
    grid-template-columns: 1fr;
  }

  .chapter-nav {
    grid-column: auto;
  }

  .chapter-card,
  .sidebar-panel {
    padding: 22px;
    border-radius: 24px;
  }

  .cover-copy h1 {
    font-size: 2.5rem;
  }

  .cover-advantage,
  .summary-grid,
  .strength-grid,
  .report-service-grid,
  .operation-strip,
  .feedback-documents,
  .contact-grid,
  .project-summary,
  .featured-projects,
  .cover-metric-band,
  .cert-grid-system,
  .cert-grid-supporting,
  .scene-band {
    grid-template-columns: 1fr;
  }

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

  .cert-figure {
    min-height: 280px;
  }

  .cert-card img,
  .cert-grid-system .cert-card img {
    height: 260px;
  }

  .report-gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-card-large,
  .report-gallery-grid .gallery-card:not(.gallery-card-large) {
    grid-column: auto;
    min-height: 300px;
  }

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