:root {
  --ink: #111827;
  --muted: #657284;
  --blue: #2459e8;
  --blue-soft: rgba(36, 89, 232, 0.12);
  --cyan: #75ccff;
  --line: rgba(96, 122, 170, 0.22);
  --line-strong: rgba(36, 89, 232, 0.36);
  --card: rgba(255, 255, 255, 0.76);
  --page: 1200px;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(60, 82, 125, 0.12);
  --ease: cubic-bezier(0.19, 1, 0.22, 1);
  font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 16%, rgba(117, 204, 255, 0.36), transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(128, 82, 255, 0.16), transparent 28%),
    radial-gradient(circle at 76% 72%, rgba(36, 89, 232, 0.12), transparent 34%),
    linear-gradient(135deg, #eef8ff 0%, #f8fbff 46%, #f1f0ff 100%);
  color: var(--ink);
}

a {
  color: inherit;
}

.site-shell {
  position: relative;
  min-height: 100dvh;
  padding: 28px 0 64px;
}

.site-shell::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(120deg, rgba(36, 89, 232, 0.08) 1px, transparent 1px),
    linear-gradient(30deg, rgba(117, 204, 255, 0.08) 1px, transparent 1px);
  background-size: 140px 140px, 180px 180px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 76%);
  content: "";
}

.nav {
  position: sticky;
  top: 26px;
  z-index: 20;
  display: grid;
  grid-template-columns: max-content 1fr max-content;
  width: min(calc(100% - 48px), var(--page));
  align-items: center;
  gap: 28px;
  margin: 0 auto;
  padding: 10px 12px 10px 18px;
  border: 1px solid rgba(36, 89, 232, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 18px 42px rgba(33, 64, 120, 0.09);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: inline-block;
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  clip-path: polygon(0 0, 45% 0, 100% 55%, 100% 100%, 0 100%);
}

.nav-links {
  display: flex;
  justify-content: flex-end;
  gap: 30px;
  color: #4d5b72;
  font-size: 13px;
  font-weight: 620;
}

.nav-links a,
.button,
.ghost-button {
  text-decoration: none;
}

.nav-links a {
  position: relative;
  transition: color 180ms ease;
}

.nav-links a::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -9px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  opacity: 0;
  transform: scaleX(0.45);
  transition: opacity 180ms ease, transform 180ms var(--ease);
  content: "";
}

.nav-links a:hover,
.nav-links a.is-current {
  color: var(--blue);
}

.nav-links a.is-current::after {
  opacity: 0.9;
  transform: scaleX(1);
}

.button,
.ghost-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 720;
  transition: transform 220ms var(--ease), border-color 220ms ease, box-shadow 220ms ease;
}

.button {
  border: 1px solid rgba(36, 89, 232, 0.28);
  background: linear-gradient(135deg, #2459e8, #4f83ff);
  color: white;
  box-shadow: 0 16px 34px rgba(36, 89, 232, 0.22);
}

.ghost-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
  color: var(--blue);
}

.button:hover,
.ghost-button:hover,
.case-card:hover,
.solution-card:hover {
  transform: translateY(-3px);
}

.button:active,
.ghost-button:active {
  transform: translateY(-1px) scale(0.985);
}

.button:focus-visible,
.ghost-button:focus-visible,
.filter-chip:focus-visible,
.case-card:focus-visible,
.solution-card:focus-visible {
  outline: 2px solid rgba(36, 89, 232, 0.34);
  outline-offset: 3px;
}

.hero,
.section,
.footer {
  width: min(calc(100% - 48px), var(--page));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(280px, 0.26fr);
  gap: 40px;
  padding: 138px 0 74px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #1f5eff;
  font-size: 12px;
  font-weight: 420;
  letter-spacing: 0.14em;
  line-height: 1.45;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 26px;
  font-size: clamp(54px, 7.2vw, 104px);
  font-weight: 280;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

h2 {
  max-width: 760px;
  margin-bottom: 0;
  font-size: clamp(38px, 5vw, 70px);
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.hero-copy {
  max-width: 610px;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.78;
}

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

.hero-panel,
.info-panel,
.case-card,
.solution-card,
.detail-panel,
.contact-panel,
.media-frame,
.form-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel {
  align-self: end;
  padding: 26px;
}

.hero-panel strong {
  display: block;
  margin-bottom: 12px;
  color: var(--blue);
  font-size: 46px;
  font-weight: 260;
  letter-spacing: -0.05em;
}

.hero-panel span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

.section {
  padding: 74px 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.66fr) minmax(280px, 0.34fr);
  gap: 46px;
  align-items: end;
  margin-bottom: 36px;
}

.section-head p:last-child {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.featured-section {
  padding-bottom: 26px;
}

.featured-section .section-head {
  display: block;
  max-width: 760px;
  margin-bottom: 30px;
}

.featured-section .section-head p {
  max-width: 660px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.case-browser-controls {
  padding-top: 0;
  padding-bottom: 0;
}

.case-browser-controls .filters {
  margin-bottom: 0;
}

.case-browser-controls + .case-audience-section {
  padding-top: 46px;
}

.filter-chip {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.58);
  color: #526277;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 620;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.filter-chip:hover {
  border-color: rgba(36, 89, 232, 0.26);
  color: var(--blue);
}

.filter-chip.is-active {
  border-color: var(--line-strong);
  background: rgba(36, 89, 232, 0.1);
  color: var(--blue);
  box-shadow: 0 8px 20px rgba(36, 89, 232, 0.08);
}

.case-grid,
.solution-grid,
.related-grid,
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-catalog-groups {
  display: grid;
  grid-template-columns: 1fr;
}

.case-audience-section + .case-audience-section {
  border-top: 1px solid var(--line);
}

.case-audience-section[hidden] {
  display: none;
}

.case-card,
.solution-card {
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  transition: transform 240ms var(--ease), border-color 220ms ease;
}

.case-card:hover,
.solution-card:hover {
  border-color: var(--line-strong);
}

.case-media {
  position: relative;
  height: 214px;
  overflow: hidden;
  border-bottom: 1px solid rgba(96, 122, 170, 0.16);
  background: rgba(255, 255, 255, 0.5);
}

.case-media.has-copy::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(1, 35, 38, 0.9) 0%, rgba(1, 35, 38, 0.66) 48%, rgba(1, 35, 38, 0) 82%);
}

.case-media-copy {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 20px 21px;
  color: #f8ffff;
  pointer-events: none;
}

.case-media-copy__eyebrow {
  color: #75f5fb;
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.12em;
  line-height: 1.3;
}

.case-media-copy strong {
  max-inline-size: 8.8em;
  font-size: clamp(20px, 1.7vw, 25px);
  font-weight: 340;
  letter-spacing: -0.055em;
  line-height: 1.14;
  text-wrap: balance;
}

.case-media img,
.case-media video,
.media-frame img,
.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-body,
.solution-card,
.detail-panel,
.form-card {
  padding: 24px;
}

.case-meta,
.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.case-meta span,
.detail-meta span,
.tag {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #4d627e;
  font-size: 11px;
  font-weight: 680;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case-card h3,
.solution-card h3 {
  margin-bottom: 12px;
  font-size: 24px;
  font-weight: 340;
  line-height: 1.25;
}

.case-title {
  display: inline;
}

.case-year {
  display: inline-block;
  margin-left: 0.42em;
  color: #5c7291;
  opacity: 0.5;
  font-size: 0.5em;
  font-weight: 520;
  letter-spacing: 0.08em;
  line-height: 1;
  vertical-align: baseline;
  white-space: nowrap;
}

.case-detail-topline .case-year {
  color: #557096;
  font-size: 0.38em;
}

.case-card p,
.solution-card p,
.detail-panel p,
.form-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.solution-card ul,
.detail-panel ul {
  counter-reset: item;
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.solution-card li,
.detail-panel li {
  counter-increment: item;
  color: #344056;
  font-size: 14px;
  line-height: 1.55;
}

.solution-card li::before,
.detail-panel li::before {
  color: var(--blue);
  content: counter(item, decimal-leading-zero);
  margin-right: 9px;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.45fr);
  gap: 20px;
  align-items: start;
}

.media-frame {
  overflow: hidden;
  min-height: 420px;
}

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

.gallery-grid a {
  overflow: hidden;
  height: 180px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
}

.case-detail-topline,
.case-artwork-section,
.case-video-section {
  width: min(calc(100% - 48px), 1120px);
  margin: 0 auto;
}

.case-detail-topline {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 116px 0 42px;
}

.case-detail-topline h1 {
  margin-bottom: 0;
  font-size: clamp(42px, 5vw, 72px);
}

.case-detail-back {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  margin-bottom: 24px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.case-detail-back::before {
  content: "\2190";
  margin-right: 8px;
}

.case-detail-back:hover {
  border-color: rgba(36, 89, 232, 0.34);
  background: #fff;
  transform: translateX(-2px);
}

.case-detail-back[hidden] {
  display: none;
}

.case-artwork-section {
  padding-bottom: 78px;
}

.case-artwork-stack {
  display: grid;
  gap: 36px;
}

.case-artwork {
  width: 100%;
  margin: 0;
}

.case-artwork img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}

.case-artwork-video {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: #fff;
}

.case-artwork-video .case-artwork-base {
  position: relative;
  z-index: 0;
}

.case-artwork-video .case-artwork-blank,
.case-artwork-video .case-artwork-video-media {
  position: absolute;
  left: var(--slot-left);
  width: var(--slot-width);
}

.case-artwork-video .case-artwork-blank {
  z-index: 1;
  top: calc(var(--slot-top) - var(--slot-bleed));
  left: calc(var(--slot-left) - var(--slot-bleed));
  width: calc(var(--slot-width) + var(--slot-bleed) * 2);
  height: calc(var(--slot-height) + var(--slot-bleed) * 2);
  border-radius: calc(var(--slot-radius) + 24px);
  background: #fff;
}

.case-artwork-video .case-artwork-blank--base {
  background: transparent;
}

.case-artwork-video .case-artwork-video-media {
  z-index: 2;
  top: var(--slot-top);
  left: calc(var(--slot-left) - var(--slot-left-bleed));
  width: calc(var(--slot-width) + var(--slot-left-bleed));
  height: var(--slot-height);
  border: 0;
  border-radius: var(--slot-radius);
  background: #fff;
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.16);
  object-fit: cover;
}

.case-artwork-video .case-artwork-frame {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.case-artwork-video .case-artwork-frame-top {
  clip-path: inset(0 0 calc(100% - var(--slot-top)) 0);
}

.case-artwork-video .case-artwork-frame-left {
  clip-path: inset(var(--slot-top) calc(100% - var(--slot-left)) calc(100% - var(--slot-top) - var(--slot-height)) 0);
}

.case-artwork-video .case-artwork-frame-right {
  clip-path: inset(var(--slot-top) 0 calc(100% - var(--slot-top) - var(--slot-height)) calc(var(--slot-left) + var(--slot-width)));
}

.case-artwork-video .case-artwork-frame-bottom {
  clip-path: inset(calc(var(--slot-top) + var(--slot-height)) 0 0 0);
}

.case-video-section {
  padding: 0 0 78px;
}

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

.video-grid video {
  display: block;
  width: 100%;
  max-height: min(72vh, 760px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #08101a;
  object-fit: contain;
}

.case-video-section.is-aux-video-layout {
  display: grid;
  grid-template-columns: 500px minmax(0, 1fr);
  gap: clamp(36px, 7vw, 96px);
  align-items: center;
}

.is-aux-video-layout .section-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  align-self: stretch;
  gap: 0;
  margin: 0;
}

.is-aux-video-layout .case-video-icon-line {
  display: block;
  width: 100%;
  margin-bottom: 28px;
}

.is-aux-video-layout .case-video-label {
  display: block;
  width: 160px;
  height: 35px;
  object-fit: contain;
}

.is-aux-video-layout .case-video-title {
  display: block;
  width: 100%;
  margin: 0;
  font-size: clamp(38px, 4.6vw, 64px);
  line-height: 1.12;
  letter-spacing: -0.045em;
  white-space: nowrap;
}

.is-aux-video-layout .case-video-title {
  color: var(--ink);
  font-weight: 760;
}

.is-aux-video-layout .case-video-subtitle {
  display: block;
  width: 100%;
  max-width: none;
  margin: 8px 0 0;
  color: var(--blue);
  font-size: 66px;
  white-space: nowrap;
}

.is-aux-video-layout .case-video-description {
  max-width: 520px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  white-space: nowrap;
}

.is-aux-video-layout .video-grid {
  grid-template-columns: 1fr;
  justify-items: end;
  box-sizing: border-box;
  padding-right: 150px;
}

.is-aux-video-layout .video-grid video {
  width: 300px;
  max-width: 100%;
  height: auto;
  max-height: none;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(320px, 0.42fr);
  gap: 20px;
  align-items: stretch;
}

.form-card label {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  color: #344056;
  font-size: 13px;
  font-weight: 640;
}

.form-card input,
.form-card textarea,
.form-card select {
  width: 100%;
  border: 1px solid rgba(96, 122, 170, 0.26);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  outline: none;
  padding: 13px 14px;
}

.form-card input::placeholder,
.form-card textarea::placeholder {
  color: #7a8799;
  opacity: 1;
}

.form-card input:focus,
.form-card textarea:focus,
.form-card select:focus {
  border-color: rgba(36, 89, 232, 0.42);
  box-shadow: 0 0 0 3px rgba(36, 89, 232, 0.1);
}

.form-card textarea {
  min-height: 150px;
  resize: vertical;
}

.form-helper {
  margin: -2px 0 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.contact-output[hidden] {
  display: none;
}

.contact-output textarea {
  min-height: 176px;
  color: #344056;
  line-height: 1.65;
}

.status {
  min-height: 24px;
  margin-top: 14px;
  color: var(--blue);
  font-size: 13px;
  line-height: 1.5;
}

.footer {
  padding-top: 40px;
  color: #69788b;
  font-size: 13px;
}

@media (max-width: 960px) {
  .nav {
    grid-template-columns: 1fr max-content;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .section-head,
  .detail-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .case-grid,
  .solution-grid,
  .related-grid,
  .gallery-grid,
  .video-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-shell {
    padding-top: 18px;
  }

  .nav > .button {
    min-height: 38px;
    padding: 0 14px;
    font-size: 12px;
    white-space: nowrap;
  }

  .nav,
  .hero,
  .section,
  .footer {
    width: min(calc(100% - 28px), var(--page));
  }

  .nav {
    width: min(362px, calc(100% - 28px));
    padding-right: 8px;
    margin-right: auto;
    margin-left: 14px;
  }

  .brand span:last-child {
    display: none;
  }

  .hero {
    padding-top: 92px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(32px, 9vw, 42px);
    letter-spacing: -0.025em;
    line-height: 1.08;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .hero-copy {
    max-width: 100%;
    font-size: 16px;
    line-height: 1.72;
    overflow-wrap: anywhere;
  }

  h2 {
    font-size: clamp(34px, 10vw, 46px);
  }

  .case-grid,
  .solution-grid,
  .related-grid,
  .gallery-grid,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .case-detail-topline,
  .case-artwork-section,
  .case-video-section {
    width: min(calc(100% - 28px), var(--page));
  }

  .case-detail-topline {
    align-items: start;
    flex-direction: column;
    padding: 92px 0 28px;
  }

  .case-artwork-section {
    padding-bottom: 48px;
  }

  .case-artwork-stack {
    gap: 20px;
  }

  .case-video-section {
    padding-bottom: 48px;
  }

  .case-video-section.is-aux-video-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .is-aux-video-layout .section-head {
    gap: 18px;
  }

  .is-aux-video-layout .case-video-title {
    font-size: clamp(30px, 8.8vw, 44px);
  }
}