/* ============================================
   Teown Brand Site — Design System
   ============================================ */

:root {
  /* Brand */
  --color-primary: #125CA9;
  --color-primary-dark: #122F89;
  --color-primary-light: #008CD4;
  --color-primary-ghost: rgba(18, 92, 169, 0.08);

  /* Neutral */
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-bg: #f8f9fa;
  --color-white: #ffffff;

  /* Spacing */
  --section-padding: 100px 0;
  --section-padding-mobile: 64px 0;
  --content-width: 1280px;
  --nav-height: 60px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;
}

/* ============================================
   Reset & Base
   ============================================ */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

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

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

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

/* Keyboard focus visibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -1000px;
  left: 16px;
  z-index: 1000;
  padding: 10px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  font-size: 14px;
}

.skip-link:focus {
  top: 0;
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  box-sizing: border-box;
}

/* ============================================
   Typography
   ============================================ */

.text-primary {
  color: var(--color-primary);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(18, 92, 169, 0.3);
}

.btn--outline {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: inset 0 0 0 1.5px var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary-ghost);
  transform: translateY(-1px);
}

.btn--full {
  width: 100%;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base), box-shadow var(--duration-base);
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo img {
  height: 28px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link--cta {
  color: var(--color-primary);
  font-weight: 600;
}

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 101;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-fast);
}

.nav__toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 768px) {
  .seo-page.nav-open {
    overflow: hidden;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--duration-slow) var(--ease-in-out), visibility 0s var(--duration-slow);
    visibility: hidden;
    padding: 48px 40px;
  }

  .nav__links.active {
    display: flex;
    transform: translateX(0);
    visibility: visible;
    transition: transform var(--duration-slow) var(--ease-in-out);
  }

  .nav__link {
    font-size: 18px;
  }
}

/* ============================================
   Hero
   ============================================ */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-height));
  background: var(--color-bg);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background-image: url("https://teown-static.teown.com/www/images/hero-bg.webp");
  background-size: cover;
  background-position: center;
}

/* Subtle brand-blue grid */
.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 92, 169, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 92, 169, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 0%, transparent 75%);
}

/* Brand glows */
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(18, 92, 169, 0.05) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 82% 78%, rgba(0, 140, 212, 0.045) 0%, transparent 62%),
    radial-gradient(ellipse 40% 60% at 12% 85%, rgba(18, 92, 169, 0.035) 0%, transparent 60%);
}

.hero__content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
  max-width: 720px;
  padding: 80px 24px;
  animation: fadeInUp 0.8s var(--ease-out);
}

.hero__title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--color-text);
  animation: fade-in-up var(--duration-slow) var(--ease-out) both;
}

.hero__title-line {
  display: block;
}

.hero__subtitle {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--color-text-secondary);
  max-width: 600px;
  line-height: 1.6;
  animation: fade-in-up var(--duration-slow) var(--ease-out) 120ms both;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-top: 8px;
  animation: fade-in-up var(--duration-slow) var(--ease-out) 240ms both;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__title,
  .hero__subtitle,
  .hero__actions {
    animation: none;
  }
}

/* ============================================
   Search-friendly Case Pages
   ============================================ */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.cases__fallback {
  grid-column: 1 / -1;
  padding: 32px;
  text-align: center;
  color: var(--color-primary);
  font-weight: 600;
}

.seo-page {
  background: #fff;
}

.case-breadcrumb {
  padding: 28px 0 22px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.case-breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.case-breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: #b8bec8;
}

.case-breadcrumb a:hover {
  color: var(--color-primary);
}

.case-eyebrow {
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.case-index {
  padding-bottom: 112px;
}

.case-index__header {
  max-width: 780px;
  padding: 50px 0 58px;
}

.case-index__header h1,
.case-detail__intro h1,
.case-state h1 {
  margin-top: 12px;
  color: var(--color-text);
  font-size: clamp(36px, 6vw, 68px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.case-index__header > p:last-child {
  max-width: 670px;
  margin-top: 22px;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.75;
}

.case-card__link {
  display: block;
  height: 100%;
}

.case-detail {
  padding-bottom: 112px;
}

.case-detail__hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: end;
  padding: 64px 0 80px;
  border-top: 1px solid var(--color-border);
}

.case-detail__intro h1 {
  max-width: 900px;
}

.case-detail__summary {
  max-width: 760px;
  margin: 26px 0 0;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.8;
}

.case-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 30px;
}

.case-detail__tags span {
  padding: 6px 12px;
  border: 1px solid rgba(18, 92, 169, 0.22);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
}

.case-detail__facts {
  border-top: 2px solid var(--color-primary);
}

.case-detail__facts > div {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

.case-detail__facts dt {
  color: var(--color-text-secondary);
  font-size: 13px;
}

.case-detail__facts dd {
  color: var(--color-text);
  font-size: 14px;
  font-weight: 600;
}

.case-detail__qr {
  display: flex;
  align-items: center;
  gap: 14px;
  width: fit-content;
  margin-top: 30px;
}

.case-detail__qr img {
  width: 96px;
  height: 96px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.case-detail__qr figcaption {
  color: var(--color-text-secondary);
  font-size: 13px;
}

.case-detail__overview,
.case-detail__media,
.case-related {
  padding: 88px 0;
  border-top: 1px solid var(--color-border);
}

.case-section-heading {
  margin-bottom: 34px;
}

.case-section-heading h2 {
  margin-top: 8px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.case-detail__overview > p {
  max-width: 860px;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.9;
}

.case-media-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.case-media-item {
  grid-column: span 4;
  overflow: hidden;
  min-height: 240px;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.case-media-item--lead {
  grid-column: span 8;
  grid-row: span 2;
}

.case-media-item--video {
  grid-column: span 6;
}

.case-media-item img,
.case-media-item video {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: contain;
  background: var(--color-bg);
}

.case-media-item video {
  background: #0d1117;
}

.case-related .case-card {
  box-shadow: none;
}

.case-detail__back {
  padding-top: 8px;
  text-align: center;
}

.case-state {
  min-height: calc(100vh - var(--nav-height) - 100px);
  display: flex;
  align-items: center;
  padding: 80px 0;
}

.case-state p:not(.case-eyebrow) {
  max-width: 600px;
  margin: 22px 0 30px;
  color: var(--color-text-secondary);
  font-size: 17px;
}

@media (max-width: 900px) {
  .case-detail__hero {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .case-media-item,
  .case-media-item--lead,
  .case-media-item--video {
    grid-column: span 6;
    grid-row: auto;
  }
}

@media (max-width: 768px) {
  .case-index,
  .case-detail {
    padding-bottom: 72px;
  }

  .case-index__header,
  .case-detail__hero {
    padding: 38px 0 54px;
  }

  .case-index .cases__grid,
  .case-related .cases__grid {
    display: grid;
    grid-template-columns: 1fr;
    overflow: visible;
    margin: 0;
    padding: 0;
  }

  .case-index .case-card,
  .case-related .case-card {
    width: 100%;
  }

  .case-detail__overview,
  .case-detail__media,
  .case-related {
    padding: 58px 0;
  }

  .case-media-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .case-media-item,
  .case-media-item--lead,
  .case-media-item--video {
    grid-column: 1;
    min-height: 0;
  }

  .case-media-item img,
  .case-media-item video {
    min-height: 0;
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 768px) {
  .hero__actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
  }

  .hero__actions .btn {
    width: 100%;
  }
}

/* ============================================
   Clients Logo Wall
   ============================================ */

.clients {
  padding: 56px 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.clients__label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.clients__wall {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px 56px;
}

.client-item {
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text);
  opacity: 0.55;
  transition: opacity var(--duration-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-item img {
  height: 32px;
  width: auto;
  opacity: 0.5;
  transition: opacity var(--duration-fast);
  filter: grayscale(100%);
}

.client-item:hover img {
  opacity: 0.8;
}

.client-item:hover {
  opacity: 0.8;
}

@media (max-width: 768px) {
  .clients {
    padding: 40px 0;
  }

  .clients__wall {
    gap: 24px 32px;
  }

  .client-item {
    font-size: 18px;
  }
}

/* ============================================
   Section Shared
   ============================================ */

.section {
  padding: var(--section-padding);
  overflow: hidden;
}

.section--alt {
  background: var(--color-bg);
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__title {
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section__header .section__title::after {
  content: "";
  display: block;
  width: 44px;
  height: 3px;
  margin: 14px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.section__title--left::after {
  margin-left: 0;
}

.section__subtitle {
  font-size: 17px;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .section {
    padding: var(--section-padding-mobile);
  }

  .section__header {
    margin-bottom: 36px;
  }
}

/* ============================================
   Cases
   ============================================ */

.cases__filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.cases__filter {
  padding: 7px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: #f3f4f6;
  color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out);
}

.cases__filter:hover {
  background: #e5e7eb;
}

.cases__filter--active {
  background: var(--color-primary);
  color: var(--color-white);
}

.cases__filter--active:hover {
  background: var(--color-primary-dark);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  display: block;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-card.hidden {
  display: none;
}

.case-card__link {
  display: block;
  height: 100%;
  color: inherit;
}

/* Skeleton loading cards */
.case-skeleton {
  aspect-ratio: 5 / 6;
  border-radius: var(--radius-lg);
  background: linear-gradient(100deg, #f1f3f5 40%, #f8f9fa 50%, #f1f3f5 60%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

@keyframes skeleton-shimmer {
  0% { background-position: 120% 0; }
  100% { background-position: -80% 0; }
}

.cases__empty {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
  padding: 32px 0 8px;
}

.cases-page {
  padding-top: 56px;
}

/* Honeypot field — visually hidden, bots fill it */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.case-card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
}

.case-card__image picture {
  display: block;
  width: 100%;
  height: 100%;
}

.case-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.case-card:hover .case-card__image img {
  transform: scale(1.025);
}

.case-card__image span {
  opacity: 0.5;
}

.case-card__body {
  padding: 20px;
}

.case-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
  color: var(--color-text-secondary);
  font-size: 12px;
  line-height: 1.4;
}

.case-card__tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  background: var(--color-primary-ghost);
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.case-card__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.case-card__desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.case-card__action {
  display: inline-block;
  margin-top: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid currentColor;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
}

.cases__more {
  text-align: center;
  margin-top: 36px;
}

@media (max-width: 1024px) {
  .cases__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .cases__filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .cases__filter {
    flex-shrink: 0;
  }

  .cases__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .case-card {
    width: 100%;
  }

  .case-skeleton {
    width: 100%;
  }
}

/* ============================================
   Services
   ============================================ */

.services__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.service-card__icon {
  font-size: 36px;
  margin-bottom: 16px;
  line-height: 1;
}

.service-card__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.service-card__desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

@media (max-width: 1200px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .services__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .service-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: 16px;
    padding: 20px;
  }

  .service-card__icon {
    font-size: 28px;
    margin-bottom: 0;
    flex-shrink: 0;
  }
}

/* ============================================
   About
   ============================================ */

.about__layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 80px;
  align-items: center;
}

.about__text p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.about__text p:last-of-type {
  margin-bottom: 32px;
}

.about__values {
  display: flex;
  gap: 48px;
}

.value-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.value-item strong {
  font-size: 18px;
  font-weight: 650;
  color: var(--color-primary);
}

.value-item span {
  font-size: 13px;
  color: var(--color-text-secondary);
}

.about__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__logo {
  width: 240px;
  height: 240px;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.about__logo img {
  width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  .about__layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__values {
    gap: 28px;
  }

  .about__visual {
    order: -1;
  }

  .about__logo {
    width: 180px;
    height: 180px;
    padding: 32px;
  }
}

/* ============================================
   Contact
   ============================================ */

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: flex-start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact__icon {
  font-size: 20px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.contact__label {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact__info-item a,
.contact__info-item p:last-child {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

/* Form */
.contact__form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ghost);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-feedback {
  margin-top: 12px;
  font-size: 14px;
  text-align: center;
  min-height: 20px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  display: none;
}

.form-feedback.success {
  display: block;
  color: #065f46;
  background: #d1fae5;
  animation: fadeIn 0.3s ease-out;
}

.form-feedback.error {
  display: block;
  color: #991b1b;
  background: #fee2e2;
  animation: fadeIn 0.3s ease-out;
}

@media (max-width: 768px) {
  .contact__layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .contact__form {
    padding: 24px 20px;
  }
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-text);
  padding: 28px 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #d1d5db;
}

@media (max-width: 768px) {
  .footer__inner {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }
}

/* ============================================
   Animations
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out),
              transform 0.6s var(--ease-out);
}

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

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out),
              transform 0.5s var(--ease-out);
}

.stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger.visible > *:nth-child(2) { transition-delay: 80ms; }
.stagger.visible > *:nth-child(3) { transition-delay: 160ms; }
.stagger.visible > *:nth-child(4) { transition-delay: 240ms; }
.stagger.visible > *:nth-child(5) { transition-delay: 320ms; }
.stagger.visible > *:nth-child(6) { transition-delay: 400ms; }

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Utility
   ============================================ */

/* ============================================
   WeChat QR Popup
   ============================================ */

.contact__info-item--clickable {
  cursor: pointer;
  transition: opacity var(--duration-fast);
}

.contact__info-item--clickable:hover {
  opacity: 0.7;
}

.wechat-popup {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fadeIn 0.25s ease-out;
}

.wechat-popup__card {
  background: var(--color-white);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  max-width: 280px;
  width: 100%;
}

.wechat-popup__card img {
  width: 200px;
  height: auto;
  max-height: 300px;
  margin: 0 auto 16px;
  border-radius: 8px;
}

.wechat-popup__card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

/* ============================================
   Case Detail Overlay
   ============================================ */

.case-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.25s var(--ease-out);
}

.case-overlay__content {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 375px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.case-overlay__close {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 24px;
  color: var(--color-white);
  z-index: 10;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.4);
}

/* Carousel */
.case-carousel {
  width: 100%;
  aspect-ratio: 750 / 1580;
  max-height: 60vh;
  overflow: hidden;
  position: relative;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.case-carousel img,
.case-carousel video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.case-carousel video {
  background: #000;
}

.case-carousel__track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  width: 100%;
  height: 100%;
}

.case-carousel__track::-webkit-scrollbar { display: none; }

.case-carousel__track > * {
  scroll-snap-align: start;
  flex: 0 0 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-carousel__dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 5;
}

.case-carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transition: background 0.2s;
}

.case-carousel__dot.active {
  background: #fff;
}

.case-overlay__body {
  padding: 20px;
}

.case-overlay__body h2 {
  font-size: 18px;
  font-weight: 650;
  margin: 8px 0;
  color: var(--color-text);
}

.case-overlay__body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.case-overlay__actions {
  display: flex;
  gap: 10px;
}

.case-overlay__actions .btn {
  flex: 1;
  justify-content: center;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* ============================================
   Teown Case Portfolio UI v2
   Scoped to server-rendered SEO pages.
   ============================================ */

.seo-page {
  --case-paper: #f6f8fb;
  --case-ink: #0d1b2a;
  --case-blue: #125ca9;
  --case-surface: #eaf0f6;
  --case-muted: #526274;
  --case-line: #cfd9e4;
  --case-media: #e4ebf3;
  --color-primary: var(--case-blue);
  --color-primary-dark: #0d4b8d;
  --color-primary-light: #2d78c4;
  --color-primary-ghost: rgba(18, 92, 169, 0.1);
  --color-text: var(--case-ink);
  --color-text-secondary: var(--case-muted);
  --color-border: var(--case-line);
  --color-bg: var(--case-surface);
  --color-white: var(--case-paper);
  color-scheme: light dark;
  color: var(--case-ink);
  background: var(--case-paper);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

.seo-page ::selection {
  color: var(--case-paper);
  background: var(--case-blue);
}

.seo-page .container {
  max-width: 1320px;
  padding-inline: clamp(20px, 4vw, 56px);
}

.seo-page .nav {
  min-height: 72px;
  border-bottom: 1px solid var(--case-line);
  background: var(--case-paper);
  box-shadow: none;
}

.seo-page .nav__inner {
  height: 72px;
}

.seo-page .nav__logo {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.seo-page .nav__logo img {
  width: 130px;
  height: auto;
}

.seo-page .nav__links {
  gap: 30px;
}

.seo-page .nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--case-ink);
  font-size: 14px;
  font-weight: 500;
}

.seo-page .nav__link[aria-current="page"] {
  color: var(--case-blue);
}

.seo-page .nav__link--cta {
  padding-inline: 16px;
  border: 1px solid var(--case-blue);
  border-radius: 4px;
  color: var(--case-blue);
}

.seo-page .nav__toggle {
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.seo-page .nav__toggle span {
  background: var(--case-ink);
}

.seo-page .case-breadcrumb {
  padding: 24px 0;
  color: var(--case-muted);
  font-size: 12px;
}

.seo-page .case-breadcrumb ol {
  gap: 7px;
}

.seo-page .case-breadcrumb li:not(:last-child)::after {
  margin-left: 7px;
  color: var(--case-line);
}

.seo-page .case-breadcrumb a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.seo-page .btn {
  min-height: 48px;
  padding: 12px 24px;
  border-radius: 4px;
  font-size: 14px;
  transition: color 180ms var(--ease-out),
              background-color 180ms var(--ease-out),
              border-color 180ms var(--ease-out),
              transform 120ms var(--ease-out);
}

.seo-page .btn:active {
  transform: scale(0.98);
}

.seo-page .btn--primary {
  background: var(--case-blue);
  color: #f8fbff;
}

.seo-page .btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: none;
  transform: none;
}

.seo-page .btn--outline {
  border: 1px solid var(--case-blue);
  background: transparent;
  box-shadow: none;
  color: var(--case-blue);
}

.seo-page .btn--outline:hover {
  background: var(--color-primary-ghost);
  transform: none;
}

.seo-page a:focus-visible,
.seo-page button:focus-visible,
.seo-page video:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 4px;
}

/* Case index */

.seo-page .case-index {
  padding-bottom: clamp(80px, 10vw, 148px);
}

.seo-page .case-index__header {
  display: block;
  max-width: 940px;
  padding: clamp(36px, 5vw, 68px) 0 clamp(58px, 7vw, 92px);
}

.seo-page .case-index__title {
  max-width: 940px;
}

.seo-page .case-index__label,
.seo-page .case-detail__type {
  margin-bottom: 16px;
  color: var(--case-blue);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.seo-page .case-index__header h1 {
  max-width: 12em;
  margin: 0;
  color: var(--case-ink);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(44px, 6.2vw, 76px);
  font-weight: 600;
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.seo-page .case-index__summary {
  max-width: 680px;
  margin-top: 28px;
  padding: 0;
}

.seo-page .case-index__summary > p:first-child {
  color: var(--case-muted);
  font-size: 16px;
  line-height: 1.75;
}

.seo-page .case-index__count {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 20px;
}

.seo-page .case-index__count strong {
  color: var(--case-blue);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
}

.seo-page .case-index__count span {
  color: var(--case-muted);
  font-size: 13px;
  line-height: 1.5;
}

.seo-page .case-index__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(52px, 5vw, 72px) 28px;
  align-items: stretch;
}

.seo-page .case-index__grid > .case-card:first-child {
  grid-column: auto;
}

.seo-page .case-index__grid > .case-card:nth-child(6n + 2),
.seo-page .case-index__grid > .case-card:nth-child(6n + 5),
.seo-page .case-index__grid > .case-card:nth-child(6n + 6),
.seo-page .case-index__grid > .case-card:nth-child(6n + 3),
.seo-page .case-index__grid > .case-card:nth-child(6n + 4),
.seo-page .case-index__grid > .case-card:nth-child(6n + 7) {
  grid-column: auto;
}

.seo-page .case-card {
  align-self: start;
  display: block;
  height: 100%;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transition: none;
}

.seo-page .case-card:hover {
  transform: none;
  box-shadow: none;
}

.seo-page .case-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.seo-page .case-card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 6px;
  background: var(--case-media);
}

.seo-page .case-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 420ms var(--ease-out), opacity 220ms var(--ease-out);
}

.seo-page .case-card:hover .case-card__image img {
  transform: scale(1.025);
}

.seo-page .case-card__placeholder {
  color: var(--case-muted);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 600;
}

.seo-page .case-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 16px 0 0;
}

.seo-page .case-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
  color: var(--case-muted);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 12px;
  line-height: 1.4;
}

.seo-page .case-card__title {
  margin: 0;
  color: var(--case-ink);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  min-height: 2.5em;
  font-size: clamp(19px, 1.55vw, 22px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.seo-page .case-card__desc {
  max-width: 52ch;
  margin-top: 10px;
  color: var(--case-muted);
  font-size: 15px;
  line-height: 1.7;
  display: -webkit-box;
  min-height: 5.1em;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.seo-page .case-card__action {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  color: var(--case-blue);
  font-size: 13px;
  font-weight: 600;
}

.seo-page .case-card--featured .case-card__link {
  display: flex;
}

.seo-page .case-card--featured .case-card__image {
  aspect-ratio: 4 / 3;
}

.seo-page .case-card--featured .case-card__body {
  padding: 16px 0 0;
}

.seo-page .case-card--featured .case-card__title {
  font-size: clamp(19px, 1.55vw, 22px);
}

.seo-page .case-index__grid > .case-card:nth-child(6n + 3) .case-card__image,
.seo-page .case-index__grid > .case-card:nth-child(6n + 6) .case-card__image {
  aspect-ratio: 4 / 3;
}

.seo-page .case-index .case-card__action {
  display: none;
}

.seo-page .case-index .case-card__link:hover .case-card__title,
.seo-page .case-index .case-card__link:focus-visible .case-card__title {
  color: var(--case-blue);
}

.seo-page .case-index__empty {
  grid-column: 1 / -1;
  padding: 64px 0;
  color: var(--case-muted);
  font-size: 16px;
}

/* Case detail */

.seo-page .case-detail {
  padding-bottom: clamp(80px, 10vw, 148px);
}

.seo-page .case-detail__hero {
  display: grid;
  grid-template-columns: minmax(300px, 4.3fr) minmax(0, 7.7fr);
  gap: clamp(40px, 7vw, 104px);
  align-items: center;
  min-height: 0;
  padding: 56px 0 82px;
  border: 0;
}

.seo-page .case-detail__intro h1 {
  max-width: 9em;
  margin: 0;
  color: var(--case-ink);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.042em;
}

.seo-page .case-detail__summary {
  max-width: 42ch;
  margin: 24px 0 0;
  color: var(--case-muted);
  font-size: 16px;
  line-height: 1.8;
}

.seo-page .case-detail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  margin: 22px 0 28px;
  color: var(--case-muted);
  font-size: 12px;
  list-style: none;
}

.seo-page .case-detail__tags li + li::before {
  content: "/";
  margin: 0 9px;
  color: var(--case-line);
}

.seo-page .case-detail__cover {
  display: grid;
  place-items: center;
  width: 100%;
  min-height: 420px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 6px;
  background: var(--case-media);
}

.seo-page .case-detail__cover img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.seo-page .case-detail__cover span {
  color: var(--case-muted);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(40px, 8vw, 92px);
  font-weight: 600;
}

.seo-page .case-detail__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 28px;
  margin: 0;
  padding: 26px 0 0;
  border-top: 2px solid var(--case-blue);
}

.seo-page .case-detail__facts > div {
  display: block;
  padding: 0;
  border: 0;
}

.seo-page .case-detail__facts dt {
  margin-bottom: 6px;
  color: var(--case-muted);
  font-size: 12px;
}

.seo-page .case-detail__facts dd {
  color: var(--case-ink);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  font-weight: 600;
}

.seo-page .case-detail__qr {
  margin-top: 28px;
}

.seo-page .case-narrative {
  width: min(100%, 75ch);
  margin: clamp(72px, 10vw, 132px) auto 0;
}

.seo-page .case-narrative__section {
  display: grid;
  grid-template-columns: minmax(150px, 0.38fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  padding: 38px 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .case-narrative__section h2 {
  margin: 0;
  color: var(--case-ink);
  font-size: clamp(22px, 2.6vw, 31px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.seo-page .case-narrative__prose,
.seo-page .case-highlight-list {
  max-width: 70ch;
  color: var(--case-muted);
  font-size: 17px;
  line-height: 1.9;
}

.seo-page .case-narrative__prose p + p {
  margin-top: 1.15em;
}

.seo-page .case-highlight-list {
  margin: 0;
  padding: 0;
  counter-reset: case-highlight;
  list-style: none;
}

.seo-page .case-highlight-list li {
  position: relative;
  padding: 0 0 28px 52px;
  counter-increment: case-highlight;
}

.seo-page .case-highlight-list li::before {
  content: counter(case-highlight, decimal-leading-zero);
  position: absolute;
  top: 2px;
  left: 0;
  color: var(--case-blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.seo-page .case-highlight-list h3 {
  margin: 0 0 7px;
  color: var(--case-ink);
  font-size: 18px;
  font-weight: 600;
}

.seo-page .case-detail__media,
.seo-page .case-related {
  padding: clamp(86px, 11vw, 150px) 0 0;
  border: 0;
}

.seo-page .case-section-heading {
  max-width: 620px;
  margin-bottom: clamp(32px, 5vw, 58px);
}

.seo-page .case-section-heading h2 {
  margin: 0;
  color: var(--case-ink);
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.seo-page .case-section-heading p {
  margin-top: 12px;
  color: var(--case-muted);
  font-size: 15px;
  line-height: 1.7;
}

.seo-page .case-media-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.seo-page .case-media-item {
  grid-column: span 5;
  min-height: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 6px;
  background: var(--case-media);
}

.seo-page .case-media-item--lead {
  grid-column: 1 / -1;
  grid-row: auto;
  aspect-ratio: 16 / 9;
}

.seo-page .case-media-item:nth-child(3n) {
  grid-column: span 7;
}

.seo-page .case-media-item:nth-child(3n + 1):not(:first-child) {
  grid-column: span 7;
}

.seo-page .case-media-item:nth-child(3n + 2) {
  grid-column: span 5;
}

.seo-page .case-media-item--video {
  grid-column: span 7;
}

.seo-page .case-media-item img,
.seo-page .case-media-item video {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  background: var(--case-media);
}

.seo-page .case-detail__cover picture,
.seo-page .case-media-item picture {
  display: contents;
}

.seo-page .case-media-item video {
  background: #08111f;
}

.seo-page .case-related .cases__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  align-items: start;
}

.seo-page .case-related .case-card:nth-child(1) {
  grid-column: span 7;
}

.seo-page .case-related .case-card:nth-child(2) {
  grid-column: span 5;
}

.seo-page .case-related .case-card:nth-child(3) {
  grid-column: 1 / -1;
  margin-top: 52px;
}

.seo-page .case-related .case-card:nth-child(3) .case-card__link {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
}

.seo-page .case-related .case-card:nth-child(3) .case-card__body {
  padding-bottom: 8px;
}

.seo-page .case-detail__back {
  padding-top: clamp(72px, 10vw, 128px);
  text-align: left;
}

/* Service and trust pages */
.seo-page .content-page {
  padding-bottom: clamp(88px, 11vw, 156px);
}

.seo-page .content-hero {
  display: grid;
  grid-template-columns: minmax(300px, 5fr) minmax(0, 7fr);
  gap: clamp(40px, 7vw, 96px);
  align-items: end;
  min-height: 620px;
  padding: clamp(52px, 7vw, 96px) 0 clamp(72px, 9vw, 120px);
}

.seo-page .content-hero--text {
  grid-template-columns: minmax(0, 9fr) minmax(120px, 3fr);
  min-height: 520px;
}

.seo-page .content-hero > div {
  max-width: 760px;
}

.seo-page .content-hero__label,
.seo-page .service-card__index {
  margin-bottom: 18px;
  color: var(--case-blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.seo-page .content-hero h1 {
  max-width: 12em;
  margin: 0;
  font-size: clamp(48px, 6.8vw, 92px);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.seo-page .content-hero > div > p:not(.content-hero__label) {
  max-width: 680px;
  margin-top: 30px;
  color: var(--case-muted);
  font-size: clamp(17px, 1.7vw, 22px);
  line-height: 1.75;
}

.seo-page .content-hero .btn {
  margin-top: 34px;
}

.seo-page .content-hero figure {
  min-height: 420px;
  background: var(--case-media);
  overflow: hidden;
}

.seo-page .content-hero figure img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
}

.seo-page .service-index {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  padding: clamp(40px, 7vw, 90px) 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .service-card {
  grid-column: span 5;
  border-top: 3px solid var(--case-ink);
}

.seo-page .service-card--featured,
.seo-page .service-card:nth-child(4) {
  grid-column: span 7;
}

.seo-page .service-card a {
  display: flex;
  min-height: 340px;
  flex-direction: column;
  padding: 28px 8px 18px 0;
}

.seo-page .service-card h2 {
  max-width: 15em;
  margin: 0;
  font-size: clamp(25px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.seo-page .service-card p:not(.service-card__index) {
  max-width: 48em;
  margin-top: 24px;
  color: var(--case-muted);
  line-height: 1.8;
}

.seo-page .service-card span {
  margin-top: auto;
  padding-top: 28px;
  color: var(--case-blue);
  font-weight: 600;
}

.seo-page .content-statement {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: clamp(32px, 7vw, 100px);
  padding: clamp(80px, 11vw, 150px) 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .content-statement h2,
.seo-page .capability-grid > h2,
.seo-page .delivery-flow > h2,
.seo-page .faq-list > h2 {
  margin: 0;
  font-size: clamp(23px, 2.5vw, 34px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.seo-page .content-statement p {
  max-width: 25em;
  margin: 0;
  font-size: clamp(27px, 4vw, 52px);
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.seo-page .capability-grid,
.seo-page .delivery-flow,
.seo-page .faq-list,
.seo-page .contact-layout {
  padding: clamp(80px, 10vw, 132px) 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .capability-grid > div {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  margin-top: 54px;
}

.seo-page .capability-grid article {
  grid-column: span 5;
  min-height: 250px;
  padding: 28px;
  background: var(--case-surface);
}

.seo-page .capability-grid article:nth-child(2),
.seo-page .capability-grid article:nth-child(3) {
  grid-column: span 7;
}

.seo-page .capability-grid h3,
.seo-page .delivery-flow h3 {
  margin: 0 0 18px;
  font-size: 21px;
}

.seo-page .capability-grid p,
.seo-page .delivery-flow p {
  color: var(--case-muted);
  line-height: 1.8;
}

.seo-page .delivery-flow ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin-top: 54px;
  list-style: none;
  counter-reset: delivery;
  border-top: 1px solid var(--case-line);
}

.seo-page .delivery-flow li {
  min-height: 260px;
  padding: 26px 24px 20px 0;
  counter-increment: delivery;
  border-right: 1px solid var(--case-line);
}

.seo-page .delivery-flow li:not(:first-child) {
  padding-left: 24px;
}

.seo-page .delivery-flow li::before {
  content: "0" counter(delivery);
  display: block;
  margin-bottom: 58px;
  color: var(--case-blue);
  font-size: 13px;
  font-weight: 700;
}

.seo-page .content-cases {
  padding: clamp(80px, 11vw, 150px) 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .content-cases .cases__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 28px;
  margin: 0;
}

.seo-page .content-cases .case-card {
  grid-column: span 6;
}

.seo-page .content-cases .case-card--featured {
  grid-column: 1 / -1;
}

.seo-page .faq-list {
  display: grid;
  grid-template-columns: 4fr 8fr;
  gap: clamp(32px, 7vw, 100px);
}

.seo-page .faq-list details {
  border-top: 1px solid var(--case-line);
}

.seo-page .faq-list details:last-child {
  border-bottom: 1px solid var(--case-line);
}

.seo-page .faq-list summary {
  min-height: 64px;
  padding: 20px 36px 20px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 600;
}

.seo-page .faq-list details p {
  max-width: 48em;
  padding: 0 30px 24px 0;
  color: var(--case-muted);
  line-height: 1.8;
}

.seo-page .content-cta {
  max-width: 920px;
  padding: clamp(80px, 11vw, 150px) 0 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .content-cta h2 {
  margin: 0;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

.seo-page .content-cta p {
  max-width: 42em;
  margin-top: 24px;
  color: var(--case-muted);
  font-size: 18px;
}

.seo-page .content-cta .btn {
  margin-top: 30px;
}

.seo-page .contact-layout {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: clamp(40px, 8vw, 110px);
}

.seo-page .contact-layout h2 {
  margin-bottom: 22px;
  font-size: clamp(28px, 3vw, 42px);
}

.seo-page .contact-layout dl {
  margin-top: 44px;
}

.seo-page .contact-layout dl div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .contact-layout dt,
.seo-page .contact-layout aside,
.seo-page .contact-layout > div > p {
  color: var(--case-muted);
}

.seo-page .contact-layout dd a {
  color: var(--case-blue);
}

.seo-page .contact-layout aside {
  padding: 32px;
  background: var(--case-surface);
}

.seo-page .contact-layout aside ul {
  margin: 0 0 32px 1.25em;
  line-height: 2;
}

.seo-page .legal-document {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(48px, 9vw, 128px);
  padding: clamp(60px, 8vw, 110px) 0;
}

.seo-page .legal-document header {
  position: sticky;
  top: 110px;
  align-self: start;
}

.seo-page .legal-document h1 {
  margin: 0;
  font-size: clamp(44px, 6vw, 78px);
  line-height: 1.05;
  letter-spacing: -0.05em;
}

.seo-page .legal-document header > p:not(.content-hero__label) {
  margin-top: 24px;
  color: var(--case-muted);
}

.seo-page .legal-document__meta {
  font-size: 13px;
}

.seo-page .legal-document section {
  padding: 28px 0;
  border-top: 1px solid var(--case-line);
}

.seo-page .legal-document section h2 {
  margin: 0 0 12px;
  font-size: 21px;
}

.seo-page .legal-document section p {
  color: var(--case-muted);
  line-height: 1.9;
}

.seo-page .case-service-link {
  display: flex;
  gap: 18px;
  align-items: baseline;
  margin-top: 64px;
  padding: 24px 0;
  border-top: 1px solid var(--case-line);
  border-bottom: 1px solid var(--case-line);
}

.seo-page .case-service-link a {
  color: var(--case-blue);
  font-weight: 600;
}

.seo-page .case-state {
  min-height: calc(100dvh - 150px);
}

.seo-page .case-state__code {
  margin-bottom: 14px;
  color: var(--case-blue);
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  font-weight: 600;
}

.seo-page .case-state h1 {
  margin: 0;
  font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 600;
}

.seo-page .footer {
  border-top: 1px solid var(--case-line);
  background: var(--case-paper);
}

.seo-page .footer__inner {
  color: var(--case-muted);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
}

.footer__links a:hover {
  color: var(--color-primary);
}

@media (prefers-reduced-motion: no-preference) {
  .seo-page .case-index__title,
  .seo-page .case-detail__intro {
    animation: case-frame-in 560ms var(--ease-out) both;
  }

  .seo-page .case-index__summary,
  .seo-page .case-detail__cover {
    animation: case-frame-in 680ms var(--ease-out) 90ms both;
  }

  .seo-page .case-index__grid > .case-card:first-child {
    animation: case-frame-in 720ms var(--ease-out) 150ms both;
  }
}

@keyframes case-frame-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-color-scheme: dark) {
  .seo-page {
    --case-paper: #08111f;
    --case-ink: #eaf1f8;
    --case-blue: #4c9be8;
    --case-surface: #0e1a2a;
    --case-muted: #9aaec2;
    --case-line: #26384c;
    --case-media: #111f31;
    --color-primary-dark: #6aadee;
    --color-primary-light: #79b8f2;
    --color-primary-ghost: rgba(76, 155, 232, 0.13);
  }

  .seo-page .nav__logo {
    padding: 4px 8px;
    border-radius: 4px;
    background: #f6f8fb;
  }

  .seo-page .btn--primary {
    color: #07101b;
  }
}

@media (max-width: 1024px) {
  .seo-page .case-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .seo-page .case-card--featured .case-card__link {
    display: flex;
  }

  .seo-page .case-detail__hero {
    grid-template-columns: minmax(260px, 5fr) minmax(0, 7fr);
    gap: 44px;
  }
}

@media (max-width: 768px) {
  .seo-page .container {
    padding-inline: 20px;
  }

  .seo-page .nav,
  .seo-page .nav__inner {
    min-height: 64px;
    height: 64px;
  }

  .seo-page .nav__links {
    top: 64px;
    right: 0;
    width: min(84vw, 320px);
    height: calc(100dvh - 64px);
    justify-content: flex-start;
    align-items: stretch;
    gap: 8px;
    padding: 30px 24px;
    border-left: 1px solid var(--case-line);
    background: var(--case-paper);
    box-shadow: none;
  }

  .seo-page .nav__link {
    width: 100%;
    min-height: 48px;
    font-size: 17px;
  }

  .seo-page .nav__link--cta {
    justify-content: center;
    margin-top: 12px;
  }

  .seo-page .case-breadcrumb {
    padding: 14px 0;
  }

  .seo-page .case-breadcrumb a {
    min-height: 38px;
  }

  .seo-page .content-hero,
  .seo-page .content-hero--text,
  .seo-page .content-statement,
  .seo-page .faq-list,
  .seo-page .contact-layout,
  .seo-page .legal-document {
    grid-template-columns: 1fr;
  }

  .seo-page .content-hero {
    gap: 44px;
    min-height: 0;
    padding: 42px 0 72px;
  }

  .seo-page .content-hero h1 {
    font-size: clamp(40px, 12vw, 54px);
  }

  .seo-page .content-hero figure,
  .seo-page .content-hero figure img {
    min-height: 280px;
  }

  .seo-page .service-index,
  .seo-page .capability-grid > div,
  .seo-page .content-cases .cases__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .seo-page .service-card,
  .seo-page .service-card--featured,
  .seo-page .service-card:nth-child(4),
  .seo-page .capability-grid article,
  .seo-page .capability-grid article:nth-child(2),
  .seo-page .capability-grid article:nth-child(3),
  .seo-page .content-cases .case-card,
  .seo-page .content-cases .case-card--featured {
    grid-column: 1;
  }

  .seo-page .service-card a {
    min-height: 300px;
  }

  .seo-page .content-statement {
    gap: 28px;
  }

  .seo-page .content-statement p {
    font-size: 28px;
  }

  .seo-page .delivery-flow ol {
    grid-template-columns: 1fr;
  }

  .seo-page .delivery-flow li,
  .seo-page .delivery-flow li:not(:first-child) {
    min-height: 0;
    padding: 26px 0;
    border-right: 0;
    border-bottom: 1px solid var(--case-line);
  }

  .seo-page .delivery-flow li::before {
    margin-bottom: 22px;
  }

  .seo-page .content-cases .case-card--featured .case-card__link {
    display: block;
  }

  .seo-page .faq-list {
    gap: 40px;
  }

  .seo-page .contact-layout dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .seo-page .legal-document header {
    position: static;
  }

  .seo-page .case-service-link {
    display: block;
  }

  .seo-page .case-service-link a {
    display: inline-block;
    margin-top: 8px;
  }

  .seo-page .case-index__header {
    grid-template-columns: 1fr;
    gap: 34px;
    padding: 36px 0 72px;
  }

  .seo-page .case-index__title,
  .seo-page .case-index__summary {
    grid-column: 1;
    max-width: none;
  }

  .seo-page .case-index__header h1 {
    font-size: clamp(38px, 11vw, 48px);
    letter-spacing: -0.04em;
  }

  .seo-page .case-index__count {
    margin-top: 26px;
  }

  .seo-page .case-index__grid,
  .seo-page .case-related .cases__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 58px;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .seo-page .case-index__grid > .case-card,
  .seo-page .case-related .case-card:nth-child(1),
  .seo-page .case-related .case-card:nth-child(2),
  .seo-page .case-related .case-card:nth-child(3) {
    grid-column: 1 / -1 !important;
    flex: none;
    width: 100%;
    margin: 0;
  }

  .seo-page .case-card--featured .case-card__link,
  .seo-page .case-related .case-card:nth-child(3) .case-card__link {
    display: block;
  }

  .seo-page .case-card--featured .case-card__image,
  .seo-page .case-index__grid > .case-card:nth-child(6n + 3) .case-card__image,
  .seo-page .case-index__grid > .case-card:nth-child(6n + 6) .case-card__image {
    aspect-ratio: 4 / 3;
  }

  .seo-page .case-card--featured .case-card__body,
  .seo-page .case-related .case-card:nth-child(3) .case-card__body {
    padding: 18px 0 0;
  }

  .seo-page .case-card--featured .case-card__title {
    font-size: 28px;
  }

  .seo-page .case-index .case-card__title,
  .seo-page .case-index .case-card__desc {
    min-height: 0;
  }

  .seo-page .case-detail__hero {
    grid-template-columns: 1fr;
    gap: 42px;
    min-height: 0;
    padding: 34px 0 62px;
  }

  .seo-page .case-detail__intro h1 {
    max-width: 10em;
    font-size: clamp(38px, 11vw, 48px);
  }

  .seo-page .case-detail__cover {
    min-height: 0;
  }

  .seo-page .case-detail__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 18px;
  }

  .seo-page .case-detail__media,
  .seo-page .case-related {
    padding-top: 88px;
  }

  .seo-page .case-narrative {
    margin-top: 72px;
  }

  .seo-page .case-narrative__section {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 30px 0;
  }

  .seo-page .case-narrative__prose,
  .seo-page .case-highlight-list {
    font-size: 16px;
    line-height: 1.85;
  }

  .seo-page .case-media-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .seo-page .case-media-item,
  .seo-page .case-media-item--lead,
  .seo-page .case-media-item:nth-child(3n),
  .seo-page .case-media-item:nth-child(3n + 1):not(:first-child),
  .seo-page .case-media-item:nth-child(3n + 2),
  .seo-page .case-media-item--video {
    grid-column: 1;
    aspect-ratio: 4 / 3;
  }

  .seo-page .case-detail__back {
    padding-top: 72px;
  }

  .seo-page .footer__inner {
    font-size: 12px;
  }
}