.hero-aside-mobile-tag {
  display: none;
}

.hero-kicker-mobile {
  display: none;
}

/* =========================
   BRANDS SECTION
   ========================= */

.brands-section {
  background: var(--color-bg-alt);
  padding: 30px 0;
}

.brands-title {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.brands-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 48px;
}

.brand-logo {
  height: 30px;
}

/* =========================
   VALUE AREAS
   ========================= */

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

.section-heading {
  text-align: center;
}

.section-subheading {
  text-align: center;
  max-width: 560px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.value-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 240px;
}

.value-card-body {
  padding: 20px 20px 24px;
}

.value-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.spacer {
  height: 1px;
  width: 90%;
  border: 0.5px solid var(--color-border);
  margin: 10px 0 16px;
}

.value-card-text {
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 22px;
}

.skill-list-label {
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-muted);
  opacity: 0.8;
}

.skill-list-box {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* =========================
   HOW I WORK SECTION
   ========================= */

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

.work-style-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.work-style-kicker {
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.work-style-text {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 42rem;
}

.work-style-subkicker {
  text-transform: uppercase;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.work-style-highlights {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.highlight-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.4rem 1.6rem;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.07);
}

.highlight-number {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.highlight-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

.highlight-text {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* =========================
   TIMELINE SECTION
   ========================= */

.timeline-section {
  background: var(--color-bg);
  overflow: hidden;
}

.timeline-container {
  width: var(--max-width);
  margin: 0 auto;
  border-radius: 2px;
}

.timeline-container::after {
  content: "";
  display: table;
  clear: both;
}

#timeline {
  position: relative;
}

#timeline::before {
  content: "";
  position: absolute;
  top: 14rem;
  left: 25px;
  height: calc(100% - 14rem);
  border-left: 0.14em dashed var(--color-border);
}

.timeline-block {
  position: relative;
  margin: 2em 0;
}

.timeline-block::after {
  content: "";
  display: table;
  clear: both;
}

.timeline-block:first-child {
  margin-top: 0;
}

.timeline-block:last-child {
  margin-bottom: 0;
}

.timeline-img {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  border: 0.14em dashed var(--color-border);
  /* Desktop-only sizing is defined later at >=1170 originally.*/
}

.timeline-img-center {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.8rem;
  height: 0.8rem;
  background: #000;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.timeline-content {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1em;
}

.timeline-content::after {
  content: "";
  display: table;
  clear: both;
}

.timeline-content h2 {
  font-size: 1.1rem;
  color: #000;
  margin: 0 0 5px;
}

.timeline-content p {
  margin: 1em 0;
  line-height: 1.6;
  font-size: 0.9rem;
}

.timeline-content .cd-right {
  color: #000;
  display: inline-block;
  font-size: 0.8125rem;
}

/* Info row inside timeline cards */
.timeline-content-info {
  background: var(--color-bg-alt);
  padding: 5px 10px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  border-radius: 2px;
  margin-top: 1rem;
}

.timeline-content-info .date-range-icon-box {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: middle;
  margin-right: 6px;
  color: var(--color-text-muted);
}

.timeline-content-info-date {
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-content .content-tags-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: left;
}

/* Org logos */
.cd-right-orgnization-logo img {
  height: 34px;
  vertical-align: middle;
}

.cd-right-orgnization-logo img.ssit { height: 38px; }
.cd-right-orgnization-logo img.tsinghua { height: 40px; }
.cd-right-orgnization-logo img.mit { height: 34px; }
.cd-right-orgnization-logo img.mushang { height: 36px; }
.cd-right-orgnization-logo img.inxeption { height: 38px; }
.cd-right-orgnization-logo img.ibm { height: 30px; }
.cd-right-orgnization-logo img.lehigh { height: 48px; }

.cd-right-orgnization {
  margin-top: 10px;
  font-weight: 600;
  font-size: 1rem;
}

.cd-right-duration {
  margin-top: 4px;
  font-size: 0.8rem;
  color: #666;
}

.cd-right-connecterdot {
  margin: 0 6px;
  color: #666;
}

/* Default arrow (desktop overrides later) */
.timeline-content::before {
  content: "";
  position: absolute;
  top: 30px;
  right: 100%;
  height: 0;
  width: 0;
  border: 7px solid transparent;
  border-right: 7px solid #333C42;
}

.timeline-content .cd-right-mobile {
  display: none;
}

/* =========================
   CASE STUDY TEASER
   ========================= */

.case-section {
  padding-bottom: 0;
  background: var(--color-bg);
}

.case-layout {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 24px;
  align-items: center;
}

.case-title {
  font-size: 22px;
  margin-bottom: 10px;
}

.case-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 24px 0 36px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.case-block {
  background: #eee;
  height: 84px;
  border-radius: 12px;
}

.case-block--tall {
  grid-row: span 2;
  height: 180px;
}

/* =========================
   CARD ANIMATION AREA
   ========================= */

.projects-visual {
  position: relative;
  width: 320px;
  height: 250px;
  margin-top: 30px;
  margin-left: 100px;
}

.card {
  position: absolute;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.3);
  transition: transform 0.55s ease, box-shadow 0.55s ease;
}

.card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
}

/* Sizes */
.card-1,
.card-2,
.card-3 {
  width: 150px;
  height: 120px;
}

.card-4 {
  width: 180px;
  height: 120px;
}

/* Thumbnail positioning */
.thumbnail-card-1 { object-position: 30% 78%; }
.thumbnail-card-2 { object-position: 68% 60%; }
.thumbnail-card-3 { object-position: 50% 50%; }
.thumbnail-card-4 { object-position: 50% 20%; }

/* Stacked state */
.card-1 {
  transform: translate(80px, 40px) rotate(5deg);
  z-index: 4;
}

.card-2 {
  transform: translate(10px, 90px) rotate(-2deg);
  z-index: 3;
}

.card-3 {
  transform: translate(180px, 60px) rotate(-10deg);
  z-index: 4;
  transition: height 0.4s ease, transform 0.4s ease;
}

.card-4 {
  transform: translate(60px, 120px) rotate(15deg);
  z-index: 3;
  transition: width 0.4s ease, transform 0.4s ease;
}

/* Flat state on hover/expanded */
.projects-visual.expanded .card {
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.projects-visual.expanded .card-1 { transform: translate(0px, 0px); }
.projects-visual.expanded .card-2 { transform: translate(160px, 0px); }

.projects-visual.expanded .card-3 {
  transform: translate(320px, 0px);
  width: 150px;
  height: 250px;
}

.projects-visual.expanded .card-4 {
  transform: translate(0px, 130px);
  width: 310px;
  height: 120px;
}

.projects-visual.expanded .thumbnail-card-3 { object-position: 44% 50%; }
.projects-visual.expanded .thumbnail-card-4 { object-position: 50% 90%; }

/* =========================
   RESPONSIVE
   ========================= */

/* ---------- TABLET (<= 1023px) ---------- */
@media (max-width: 1023px) {

  .hero-kicker-desktop {
    display: none;
  }

  .hero-kicker-mobile {
    display: block;
  }

  /* Brands */
  .brands-row {
    flex-wrap: wrap;
    gap: 28px;
    padding: 12px 12px 0;
  }

  .brand-logo {
    height: 26px;
  }

  /* Value: 3 -> 2 cols */
  .value-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .work-style-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .timeline-container {
    width: 100%;
    padding: 0 14px;
  }

  #timeline::before {
    left: 24px;
    top: 10.5rem;
    height: calc(100% - 10.5rem);
  }

  .timeline-img {
    width: 26px;
    height: 26px;
    left: -2px;
    top: 18px;
  }

  .timeline-block {
    padding-left: 2.5rem;
  }

  .timeline-content {
    padding: 1.2rem;
    width: 100%;
  }

  .timeline-content::before {
    content: "";
    position: absolute;
    left: auto;
    right: calc(100% - 5px);
    width: 12px;
    height: 12px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-right: none;
    border-top: none;
    box-sizing: border-box;
    transform: translateY(-50%) rotate(45deg);
  }

  .timeline-content .cd-right {
    display: flex;
    flex-direction: column;
    gap: 6px; 
    align-items: flex-start;
    text-align: left;

    position: static;
    width: auto;
    left: auto;
    right: auto;
    top: auto;
  }
  .timeline-content h2 {
    font-size: 1rem;
  }

  .cd-right-orgnization-logo {
    grid-column: 1;
    grid-row: 1 / span 2; /* spans both text lines */
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    gap: 16px;
  }

  .cd-right-orgnization {
    grid-column: 2;
    grid-row: 1;
    margin-top: 0;
    line-height: 1.6;
  }

  .cd-right-duration {
    grid-column: 2;
    grid-row: 2;
    margin-top: 0;
  }

  .timeline-content .cd-right-desktop {
    display: none;
  }

  .timeline-content .cd-right-mobile {
    display: block;
  }

  .timeline-content .timeline-job-title {
    display: none;
  }
  

  /* Case: stack + center visual */
  .case-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  /* Keep the cards stacked as the default layout */

  .projects-visual {
    position: relative;
    margin: 18px auto 0;
    width: 100%;
    max-width: 340px;
    height: 280px;
    padding-left: 24px; 
  }

  /* Make sure the stacked transforms are used on mobile */
  .card-1 { transform: translate(44px, 26px) rotate(5deg); }
  .card-2 { transform: translate(0px, 78px) rotate(-2deg); }
  .card-3 { transform: translate(160px, 44px) rotate(-10deg); }
  .card-4 { transform: translate(40px, 120px) rotate(12deg); }

  /* Disable the desktop "expanded" (hover) behavior on mobile */
  .projects-visual.expanded .card-1 { transform: translate(44px, 26px) rotate(5deg); }
  .projects-visual.expanded .card-2 { transform: translate(0px, 78px) rotate(-2deg); }
  .projects-visual.expanded .card-3 { transform: translate(160px, 44px) rotate(-10deg); width: 140px; height: 110px; }
  .projects-visual.expanded .card-4 { transform: translate(40px, 120px) rotate(12deg); width: 170px; height: 110px; }
  .projects-visual.expanded .thumbnail-card-3 { object-position: 50% 50%; }
  .projects-visual.expanded .thumbnail-card-4 { object-position: 50% 20%; }

  .card {
    transition: none;
  }
}

/* ---------- MOBILE (<= 767px) ---------- */
@media (max-width: 767px) {
  

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 58px; /* optional */
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-text {
    font-size: 1rem;
  }

  /* Put tags above aside */
  .hero-tags {
    order: 1;
  }

  .hero-aside-mobile-tag {
    display: block;
  }
  .hero-aside-desktop-tag {
    display: none;
  }

  .hero-aside {
    order: 2;
  }

  .hero-meta {
    display: none;
  }

  /* Value: 2 -> 1 col + subheading padding */
  .value-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section-heading {
    font-size: 1.4rem;
  }

  .section-subheading {
    padding: 0 14px;
    max-width: 100%;
  }

  /* Work style: tighten spacing */
  .work-style-grid { gap: 2.2rem; }
  .highlight-card { padding: 1.1rem 1.2rem; }
  .work-style-text { font-size: 1rem; }

  /* Timeline: date row stacks on small screens */
  .timeline-content-info-date {
    display: block;
    width: 100%;
  }

  /* Projects visual: tighter fit + smaller cards */
  .projects-visual {
    max-width: 340px;
    height: 260px;
  }

  .card-1,
  .card-2,
  .card-3 {
    width: 140px;
    height: 110px;
  }

  .card-4 {
    width: 170px;
    height: 110px;
  }

  /* Reposition stacked layout for narrow screens */
  .card-1 { transform: translate(44px, 26px) rotate(5deg); }
  .card-2 { transform: translate(0px, 78px) rotate(-2deg); }
  .card-3 { transform: translate(160px, 44px) rotate(-10deg); }
  .card-4 { transform: translate(40px, 120px) rotate(12deg); }
}

/* desktop version of the timeline layout. */
@media (min-width: 1024px) {
  #timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .timeline-block {
    margin: 4em 0;
  }

  .timeline-img {
    width: 30px;
    height: 30px;
    left: 50%;
    margin-left: -15px;
    margin-top: 15px;
  }

  .timeline-content {
    margin-left: 0;
    padding: 2.2em;
    width: 44%;
  }

  .timeline-content::before {
    content: "";
    position: absolute;
    left: calc(100% - 5px);
    width: 12px;
    height: 12px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-left: none;
    border-bottom: none;
    box-sizing: border-box;
    transform: translateY(-50%) rotate(45deg);
  }

  .timeline-content .cd-right {
    position: absolute;
    width: calc(100% - 3.1875rem);
    left: 126%;
    top: 18px;
    font-size: 1rem;
  }

  .timeline-block:nth-child(even) .timeline-content {
    float: right;
  }

  .timeline-block:nth-child(even) .timeline-content::before {
    left: auto;
    right: calc(100% - 5px);
    border: 1px solid var(--color-border);
    border-right: none;
    border-top: none;
  }

  .timeline-block:nth-child(even) .timeline-content .cd-right {
    left: auto;
    right: 126%;
    top: 18px;
    text-align: right;
  }

  .timeline-block:nth-child(even) .timeline-content .cd-right .cd-right-orgnization-logo {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
    align-items: center;
  }
}