/* 璟云科技官方网站 — 产业智能 · 企业蓝 */

:root {
  --blue-900: #061a3d;
  --blue-800: #0b3d91;
  --blue-700: #1452b8;
  --blue-500: #3b7dd8;
  --blue-300: #7eb3f0;
  --blue-100: #d6e6f8;
  --blue-50: #eef4fb;
  --ink: #142033;
  --ink-soft: #2f3e52;
  --line: rgba(11, 61, 145, 0.12);
  --white: #ffffff;
  --surface: #f5f8fc;
  --hero-overlay: linear-gradient(
    180deg,
    rgba(6, 26, 61, 0.55) 0%,
    rgba(6, 26, 61, 0.35) 45%,
    rgba(6, 26, 61, 0.72) 100%
  );
  --font-display: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --font-body: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Source Han Sans SC", sans-serif;
  --max: 1180px;
  --header-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.65;
  font-weight: 400;
  text-rendering: auto;
  -webkit-font-smoothing: subpixel-antialiased;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease),
    backdrop-filter 0.35s var(--ease);
}

.site-header.is-solid {
  background: rgba(6, 26, 61, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 28px rgba(6, 26, 61, 0.25);
}

.header-inner {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  flex-shrink: 0;
}

.brand-mark {
  height: 40px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-text span {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  opacity: 0.95;
  text-transform: uppercase;
}

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

.nav a {
  color: #fff;
  font-size: 0.95rem;
  position: relative;
  transition: color 0.2s;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--blue-300);
  transition: width 0.25s var(--ease);
}

.nav a:hover,
.nav a.is-active {
  color: var(--white);
}

.nav a:hover::after,
.nav a.is-active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 18px !important;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 2px;
  transition: background 0.25s, border-color 0.25s !important;
}

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

.nav-cta:hover {
  background: var(--white);
  color: var(--blue-800) !important;
  border-color: var(--white);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  color: var(--white);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s, opacity 0.25s;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  color: var(--white);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--blue-900) center/cover no-repeat;
  transform: scale(1.06);
  animation: heroZoom 18s var(--ease) forwards;
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-overlay);
}

.hero-circuit {
  position: absolute;
  inset: auto 0 0 0;
  height: 42%;
  background-image: url("../assets/circuit.svg");
  background-size: 720px;
  opacity: 0.18;
  pointer-events: none;
  mask-image: linear-gradient(180deg, transparent, #000 40%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(100% - 48px, 760px);
  margin: 0 0 0 clamp(28px, 6vw, 88px);
  padding: 0 0 96px;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 5.6rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.05;
  margin: 0 0 18px;
  animation: riseIn 0.9s var(--ease) 0.15s both;
}

.hero-bar {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  background: var(--blue-800);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 22px;
  animation: riseIn 0.9s var(--ease) 0.3s both;
}

.hero-bar span {
  opacity: 0.7;
}

.hero-support {
  max-width: 36em;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 32px;
  animation: riseIn 0.9s var(--ease) 0.45s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  animation: riseIn 0.9s var(--ease) 0.6s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 26px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border-radius: 2px;
  transition: transform 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--white);
  color: var(--blue-800);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--blue-100);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.55);
  color: var(--white);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--white);
}

.hero-scroll {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  animation: floatY 2.2s ease-in-out infinite;
}

.hero-scroll i {
  width: 1px;
  height: 28px;
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.8));
}

/* ---------- Quick entries (LOL-style rail) ---------- */

.quick-rail {
  background: var(--blue-900);
  color: var(--white);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.quick-item {
  padding: 28px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.25s;
  position: relative;
  overflow: hidden;
}

.quick-item:last-child {
  border-right: none;
}

.quick-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--blue-500);
  transform: scaleY(0);
  transition: transform 0.3s var(--ease);
}

.quick-item:hover {
  background: rgba(59, 125, 216, 0.15);
}

.quick-item:hover::before {
  transform: scaleY(1);
}

.quick-item strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 6px;
  font-weight: 600;
}

.quick-item span {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ---------- Sections ---------- */

.section {
  padding: 96px 0;
  position: relative;
}

.section-head {
  margin-bottom: 48px;
  max-width: 40em;
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 12px;
  font-weight: 600;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 700;
  color: var(--blue-900);
  margin: 0 0 14px;
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

/* About */

.about {
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(59, 125, 216, 0.08), transparent),
    linear-gradient(180deg, var(--white), var(--blue-50));
}

.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-copy p {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.pillars {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pillar {
  padding: 22px 24px;
  background: var(--white);
  border-left: 4px solid var(--blue-800);
  box-shadow: 0 10px 30px rgba(11, 61, 145, 0.06);
  transform: translateY(16px);
  opacity: 0;
  transition: transform 0.5s var(--ease), opacity 0.5s var(--ease),
    box-shadow 0.25s;
}

.pillar.is-inview {
  transform: translateY(0);
  opacity: 1;
}

.pillar:nth-child(2) {
  border-left-color: var(--blue-500);
  margin-left: 18px;
}

.pillar:nth-child(3) {
  border-left-color: var(--blue-300);
  margin-left: 36px;
}

.pillar-level {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--blue-500);
  text-transform: uppercase;
}

.pillar h3 {
  margin: 6px 0 8px;
  font-size: 1.2rem;
  color: var(--blue-900);
}

.pillar p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* Products */

.products {
  background: var(--white);
}

.product-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.product-tab {
  padding: 10px 16px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  border-radius: 2px;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.product-tab:hover {
  border-color: var(--blue-500);
  color: var(--blue-800);
}

.product-tab.is-active {
  background: var(--blue-800);
  border-color: var(--blue-800);
  color: var(--white);
}

.product-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background:
    linear-gradient(135deg, rgba(11, 61, 145, 0.04), transparent 50%),
    var(--blue-50);
  border: 1px solid var(--line);
  min-height: 320px;
}

.product-panel.is-active {
  display: grid;
  animation: fadePanel 0.45s var(--ease);
}

.product-panel h3 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--blue-900);
  margin: 0 0 8px;
}

.product-en {
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--blue-500);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.product-panel > div > p {
  color: var(--ink-soft);
  margin: 0 0 22px;
}

.point-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}

.point-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.92rem;
  color: var(--ink);
}

.point-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  background: var(--blue-500);
  border-radius: 1px;
}

.product-visual {
  min-height: 240px;
  background:
    radial-gradient(circle at 30% 30%, rgba(59, 125, 216, 0.25), transparent 55%),
    linear-gradient(160deg, var(--blue-800), var(--blue-900));
  color: var(--white);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.product-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../assets/circuit.svg");
  background-size: 480px;
  opacity: 0.2;
}

.product-visual span {
  position: relative;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  opacity: 0.95;
}

.product-visual strong {
  position: relative;
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-top: 8px;
  letter-spacing: 0.06em;
}

/* Solutions */

.solutions {
  background:
    linear-gradient(180deg, var(--blue-50), var(--white));
}

.solution-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-item {
  padding: 28px 26px 30px;
  border-top: 3px solid var(--blue-800);
  background: var(--white);
  box-shadow: 0 12px 32px rgba(11, 61, 145, 0.05);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  opacity: 0;
  transform: translateY(20px);
}

.solution-item.is-inview {
  opacity: 1;
  transform: translateY(0);
}

.solution-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(11, 61, 145, 0.1);
}

.solution-item:nth-child(2) {
  border-top-color: var(--blue-500);
}
.solution-item:nth-child(3) {
  border-top-color: #2a9d8f;
}
.solution-item:nth-child(4) {
  border-top-color: #e09f3e;
}
.solution-item:nth-child(5) {
  border-top-color: #4a6fa5;
}

.solution-item h3 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--blue-900);
}

.solution-item p {
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  font-size: 0.8125rem;
  padding: 4px 10px;
  background: var(--blue-50);
  color: var(--blue-800);
  border: 1px solid var(--line);
}

/* Cases */

.cases {
  background: var(--blue-900);
  color: var(--white);
}

.cases .section-head h2 {
  color: var(--white);
}

.cases .section-head p {
  color: rgba(255, 255, 255, 0.7);
}

.cases .section-label {
  color: var(--blue-300);
}

.case-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

.case-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding-right: 8px;
  position: sticky;
  top: 88px;
}

.case-nav button {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 8px;
  align-items: start;
  text-align: left;
  min-height: 46px;
  padding: 10px 12px;
  color: rgba(255, 255, 255, 0.78);
  border-left: 2px solid transparent;
  font-size: 0.9rem;
  line-height: 1.45;
}

.case-nav button i {
  font-style: normal;
  font-variant-numeric: tabular-nums;
  color: var(--blue-300);
}

.case-nav button:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

.case-nav button.is-active {
  color: var(--white);
  border-left-color: var(--blue-300);
  background: rgba(59, 125, 216, 0.18);
}

.case-pages {
  min-width: 0;
}

.case-board {
  background: var(--white);
  color: var(--ink);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.case-board-head span {
  display: inline-block;
  color: var(--blue-800);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.case-board h3 {
  margin: 8px 0 0;
  color: var(--blue-900);
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.35;
}

.case-board .case-metrics {
  margin-top: 16px;
}

.case-board .case-metrics span {
  color: var(--blue-800);
  border-color: rgba(11, 61, 145, 0.2);
  background: var(--blue-50);
}

.case-sheet {
  margin-top: 18px;
}

.case-sheet.sides {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.35fr) minmax(0, 0.95fr);
  gap: 12px;
  align-items: stretch;
}

.case-sheet.plant {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-plant-top {
  background: var(--blue-50);
}

.case-plant-top h4 {
  display: inline-block;
  width: auto;
  margin: 14px 14px 8px;
  padding: 4px 16px;
  border-radius: 999px;
  background: var(--blue-800);
  color: #fff;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
}

.case-plant-body {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.72fr);
  gap: 12px;
  align-items: start;
}

.case-plant-points {
  margin: 4px 16px 16px;
  padding: 0 0 0 1.15em;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.75;
}

.case-plant-points li + li {
  margin-top: 12px;
}

.case-hot {
  color: #c0392b;
  font-weight: 700;
}

.case-sheet.poster {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  gap: 12px;
  align-items: start;
}

.case-brand {
  display: block;
  width: calc(100% - 28px);
  height: auto;
  margin: 18px 14px 18px;
  object-fit: contain;
  object-position: left center;
  background: transparent;
}

.case-sheet.arch {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.45fr);
  gap: 12px;
  align-items: start;
}

.case-arch-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.case-sheet.arch .case-figstack {
  padding: 0;
  background: #fff;
  border: 1px solid rgba(11, 61, 145, 0.12);
}

.case-sheet.arch .case-figstack img {
  background: #fff;
  border: 0;
}

.case-sheet.split,
.case-sheet.metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
  align-items: stretch;
}

.case-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.case-figstack,
.case-figgrid {
  display: grid;
  gap: 10px;
}

.case-figstack {
  padding: 0 6px 12px;
}

.case-figgrid {
  margin-top: 14px;
}

.case-figgrid.n2,
.case-figgrid.n4 {
  grid-template-columns: 1fr 1fr;
}

.case-figgrid.n3 {
  grid-template-columns: repeat(3, 1fr);
}

.case-figgrid.five {
  grid-template-columns: repeat(6, 1fr);
}

.case-figgrid.five img {
  grid-column: span 2;
}

.case-figgrid.five img:nth-child(n + 4) {
  grid-column: span 3;
}

.case-figgrid.wide {
  grid-template-columns: 1fr 1fr;
}

.case-figstack img,
.case-figgrid img {
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  object-position: center;
  display: block;
  background: #f3f7fb;
  border: 1px solid rgba(11, 61, 145, 0.12);
}

.case-figstack img {
  height: auto;
  aspect-ratio: auto;
  max-height: none;
}

.case-metric-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 0 12px 14px;
}

.case-metric-board span {
  display: grid;
  grid-template-columns: 92px 1fr;
  align-items: center;
  gap: 12px;
  background: #fff;
  border-left: 4px solid var(--blue-500);
  padding: 12px 14px;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.4;
}

.case-metric-board b {
  margin: 0;
  text-align: right;
  color: var(--blue-800);
  font-size: 1.45rem;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.case-metric-board.cols2 {
  grid-template-columns: 1fr 1fr;
  gap: 22px 28px;
  align-content: start;
  padding: 18px 8px 8px 4px;
}

.case-metric-board.cols2 span {
  display: block;
  background: transparent;
  border-left: 4px solid #3b7dd8;
  padding: 2px 0 4px 14px;
  color: #3a4553;
  font-size: 0.95rem;
}

.case-metric-board.cols2 b {
  display: block;
  margin-bottom: 6px;
  text-align: left;
  color: #1c2430;
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
}

.case-metric-board.cols2 span.is-note {
  display: flex;
  align-items: center;
  min-height: 72px;
  color: #1c2430;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
}

.case-client {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 14px 6px;
}

.case-client b {
  color: #061a3d;
  font-size: 1.05rem;
  white-space: nowrap;
}

.case-client img {
  height: 58px;
  width: auto;
  max-width: 280px;
  object-fit: contain;
  object-position: left center;
  background: transparent;
}

.case-life h4.is-label {
  margin: 8px 0 4px;
  padding: 4px 14px 0;
  background: transparent;
  color: #061a3d;
  font-size: 1.02rem;
  letter-spacing: 0;
}

.case-life .lead.blue {
  color: #1d4e89;
}

.case-life .lead.red {
  color: #b42318;
}

.case-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: stretch;
}

.case-sheet .case-cols {
  margin-top: 0;
}

.case-cols.n2 {
  grid-template-columns: 1fr 1fr;
}

.case-cols.n3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.case-col {
  display: flex;
  flex-direction: column;
  background: var(--blue-50);
  min-width: 0;
  height: 100%;
}

.case-col h4 {
  margin: 0 0 14px;
  padding: 10px 14px;
  background: var(--blue-800);
  color: var(--white);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.case-col p {
  margin: 0 14px 10px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.75;
}

.case-col p:first-child {
  margin-top: 14px;
}

.case-note {
  margin: 12px 0 0;
  padding: 12px 14px;
  background: var(--blue-800);
  color: #fff;
  font-size: 0.92rem;
  line-height: 1.7;
  text-align: center;
}

.case-group {
  padding: 0 14px 8px;
}

.case-group h5 {
  margin: 4px 0 8px;
  padding: 6px 10px;
  background: var(--blue-800);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
}

.case-chips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 0;
  padding: 0 14px 14px;
  list-style: none;
}

.case-group .case-chips {
  padding: 0 0 8px;
}

.case-sheet.sides .case-chips {
  grid-template-columns: 1fr;
}

.case-chips li {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 6px 8px;
  background: #fff;
  color: #061a3d;
  border: 1px solid rgba(11, 61, 145, 0.28);
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.4;
  text-align: center;
}

.case-chips li:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.case-pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.case-pager button {
  flex: 0 0 112px;
  padding: 8px 0;
  color: #fff;
  border: 1px solid rgba(126, 179, 240, 0.45);
  font-size: 0.875rem;
  text-align: center;
}

.case-pager button:hover {
  background: rgba(255, 255, 255, 0.08);
}

.case-count {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.875rem;
  text-align: center;
  line-height: 1.45;
}


.case-industry {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--blue-300);
  margin-bottom: 14px;
}

.case-detail h3 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  margin: 0 0 18px;
  line-height: 1.35;
}

.case-detail p {
  margin: 0;
  color: rgba(255, 255, 255, 0.94);
  font-size: 1.02rem;
  max-width: 46em;
  line-height: 1.7;
}

.case-points {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  max-width: 46em;
}

.case-points li {
  position: relative;
  padding-left: 16px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
  line-height: 1.6;
}

.case-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--blue-300);
}

.case-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.case-block {
  margin-top: 22px;
}

.case-block h4 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--blue-300);
}

.case-block p + p {
  margin-top: 10px;
}

.case-group h5 {
  margin: 10px 0 8px;
  padding: 6px 10px;
  background: #0b3d91;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
}

.case-metrics span {
  padding: 8px 14px;
  border: 1px solid rgba(126, 179, 240, 0.35);
  color: var(--blue-100);
  font-size: 0.85rem;
}

/* Clients */

.clients {
  background: var(--blue-50);
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
}

.client-grid figure {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-height: 84px;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid rgba(11, 61, 145, 0.12);
  border-radius: 12px;
}

.client-grid img {
  width: 100%;
  height: 52px;
  object-fit: contain;
}

/* Capabilities */

.capabilities {
  background: var(--white);
}

.cap-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.cap-item {
  background: var(--white);
  padding: 32px 24px;
  transition: background 0.25s;
}

.cap-item:hover {
  background: var(--blue-50);
}

.cap-item h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  color: var(--blue-900);
}

.cap-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* Contact */

.contact {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(120deg, rgba(6, 26, 61, 0.88), rgba(11, 61, 145, 0.78)),
    url("../assets/hero-bg.jpg") center/cover no-repeat;
  color: var(--white);
  text-align: center;
}

.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin: 0 0 14px;
  letter-spacing: 0.06em;
}

.contact > .container > p {
  margin: 0 auto 28px;
  max-width: 28em;
  color: rgba(255, 255, 255, 0.94);
}

.contact-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 36px;
  margin-top: 36px;
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.94);
}

.contact-meta strong {
  color: var(--white);
  font-weight: 700;
}

/* Footer */

.site-footer {
  background: #040e22;
  color: rgba(255, 255, 255, 0.82);
  padding: 36px 0;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.footer-brand {
  color: var(--white);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
}

.footer-beian {
  color: inherit;
  text-decoration: none;
}

.footer-beian:hover {
  color: var(--white);
  text-decoration: underline;
}

/* Reveal */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

/* Animations */

@keyframes riseIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroZoom {
  to {
    transform: scale(1);
  }
}

@keyframes floatY {
  0%,
  100% {
    transform: translate(-50%, 0);
  }
  50% {
    transform: translate(-50%, 8px);
  }
}

@keyframes fadePanel {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .client-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .about-grid,
  .product-panel.is-active,
  .case-layout,
  .case-sheet.sides,
  .case-sheet.split,
  .case-sheet.arch,
  .case-sheet.poster,
  .case-plant-body,
  .case-sheet.metrics,
  .case-cols.n2,
  .case-cols.n3,
  .case-figgrid.n2,
  .case-figgrid.n3,
  .case-figgrid.n4,
  .case-figgrid.five,
  .case-figgrid.wide {
    grid-template-columns: 1fr;
  }

  .case-figgrid.five img,
  .case-figgrid.five img:nth-child(n + 4) {
    grid-column: auto;
  }


  .solution-list {
    grid-template-columns: 1fr 1fr;
  }

  .cap-row {
    grid-template-columns: 1fr 1fr;
  }

  .quick-rail-inner {
    grid-template-columns: 1fr 1fr;
  }

  .quick-item:nth-child(2) {
    border-right: none;
  }

  .quick-item:nth-child(1),
  .quick-item:nth-child(2) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .pillar:nth-child(2),
  .pillar:nth-child(3) {
    margin-left: 0;
  }

  .case-nav {
    flex-direction: row;
    overflow-x: auto;
    max-height: none;
    gap: 8px;
    padding-bottom: 8px;
    position: static;
  }

  .case-nav button {
    white-space: nowrap;
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .case-nav button.is-active {
    border-left: none;
    border-bottom-color: var(--blue-300);
  }
}

@media (max-width: 720px) {
  .client-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(6, 26, 61, 0.96);
    padding: 12px 20px 20px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav a {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-cta {
    margin-top: 12px;
    text-align: center;
  }

  .hero-content {
    padding-bottom: 88px;
  }

  .solution-list,
  .cap-row,
  .quick-rail-inner,
  .point-list {
    grid-template-columns: 1fr;
  }

  .quick-item {
    border-right: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .product-panel {
    padding: 24px;
  }

  .case-board {
    padding: 20px 16px 16px;
  }

  .case-pager {
    flex-wrap: wrap;
    justify-content: center;
  }

  .case-count {
    flex-basis: 100%;
    order: -1;
  }

  .section {
    padding: 72px 0;
  }
}