/* ==========================================================================
   深度触达 DEEPTOUCH — V4 sections（直播电商 / AI 服务 / 商业策划）
   ========================================================================== */

/* ------------------------------------------------------- shared v4 bits -- */
.section-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 30px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--ink);
}
.section-cta p {
  max-width: 34em;
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.6;
}
.section-cta--tight { margin-top: 26px; padding-top: 0; border-top: 0; }

/* --------------------------------------------------------- 01 直播电商 -- */
.live-pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--line);
}
.live-pillar {
  position: relative;
  padding: 20px 24px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.live-pillar:hover { background: var(--paper-3); transform: translateY(-3px); }
.live-pillar__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.live-pillar__no { font-family: var(--mono); font-size: 9px; color: var(--gold-deep); }
.live-pillar__en {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.live-pillar h3 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 600;
}
.live-pillar__desc {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.live-pillar ul { margin-top: 14px; }
.live-pillar li {
  position: relative;
  padding-left: 12px;
  margin-top: 5px;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink-2);
}
.live-pillar li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 4px;
  height: 1px;
  background: var(--gold-deep);
}

.live-scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(30px, 5vw, 64px);
  align-items: center;
  margin-top: clamp(38px, 4.6vw, 58px);
  padding-top: clamp(24px, 3.2vw, 36px);
  border-top: 1px solid var(--ink);
}
.live-scene__copy h3 {
  margin-top: 12px;
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 600;
  line-height: 1.35;
}
.live-scene__copy > p {
  margin-top: 14px;
  max-width: 30em;
  font-size: 13px;
  line-height: 1.9;
  color: var(--ink-2);
}
.live-scene__copy .clientline { margin-top: 18px; }
.live-scene .phones { max-width: 520px; margin-left: auto; }

.live-hits { margin-top: clamp(44px, 5vw, 68px); }
.live-hits__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }

/* live case index — image-led */
.case-wall-block { margin-top: clamp(42px, 4.8vw, 62px); }
.case-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}
.case-tile {
  border: 1px solid var(--line);
  background: var(--paper-3);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.case-tile:hover { border-color: var(--gold); transform: translateY(-3px); }
.case-tile__media {
  position: relative;
  isolation: isolate;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #07111c;
}
.case-tile__media::before {
  content: "";
  position: absolute;
  inset: -12%;
  z-index: 0;
  background-image: var(--img);
  background-size: cover;
  background-position: center;
  filter: blur(24px) brightness(0.45) saturate(0.85);
  transform: scale(1.12);
}
.case-tile__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 9px;
  filter: drop-shadow(0 14px 22px rgba(0, 0, 0, 0.45));
  transition: transform 0.5s var(--ease);
}
.case-tile:hover .case-tile__media img { transform: scale(1.025); }
.case-tile__tag {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 2;
  padding: 3px 7px;
  border: 1px solid rgba(120, 219, 234, 0.32);
  background: rgba(5, 13, 23, 0.76);
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--cyan);
}
.case-tile__tag[data-partner] {
  border-color: rgba(228, 180, 92, 0.5);
  color: var(--gold);
}
.case-tile__body { padding: 12px 13px 14px; }
.case-tile__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.case-tile__brand {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
}
.case-tile__head span {
  font-family: var(--mono);
  font-size: 7.5px;
  line-height: 1.5;
  color: var(--ink-3);
  text-align: right;
}
.case-tile__gmv {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 8px;
}
.case-tile__gmv b {
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold-deep);
}
.case-tile__gmv span {
  font-family: var(--mono);
  font-size: 8px;
  color: var(--ink-3);
}
.case-tile__meta {
  margin-top: 7px;
  font-size: 10.5px;
  line-height: 1.65;
  color: var(--ink-2);
}
.case-wall__note {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.7;
  color: var(--ink-3);
}
.case-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}
.case-legend span { display: inline-flex; align-items: center; gap: 6px; }
.case-dot { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.case-dot--self { background: var(--cyan); }
.case-dot--partner { background: var(--gold); }
.case-more {
  grid-column: span 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 26px;
  background: var(--ink);
  border: 1px solid var(--ink);
  overflow: hidden;
}
.case-more__label {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  color: rgba(245, 241, 230, 0.55);
}
.case-more h4 {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: clamp(24px, 2.2vw, 32px);
  line-height: 1.28;
  font-weight: 600;
  color: var(--paper);
}
.case-more__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
  margin-top: 18px;
  padding: 0;
  list-style: none;
}
.case-more__list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 7px 0;
  border-bottom: 1px solid rgba(245, 241, 230, 0.14);
  font-size: 10px;
  line-height: 1.5;
  color: rgba(245, 241, 230, 0.55);
}
.case-more__list span { font-size: 12.5px; color: rgba(245, 241, 230, 0.92); }
.case-more__note { margin-top: 14px; font-size: 10px; line-height: 1.7; color: rgba(245, 241, 230, 0.45); }

/* seven joint cases — real page renders, kept inside the wide card */
.case-more--gallery {
  justify-content: flex-start;
  padding: 18px 20px 19px;
}
.case-more__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.case-more--gallery h4 {
  margin-top: 6px;
  font-size: clamp(20px, 1.65vw, 24px);
  line-height: 1.25;
}
.case-more__hint {
  margin-top: 2px;
  flex: none;
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: rgba(245, 241, 230, 0.38);
  white-space: nowrap;
}
.case-more__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 9px;
  margin-top: 12px;
}
.case-mini {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}
.case-mini__media {
  display: block;
  aspect-ratio: 1.9 / 1;
  overflow: hidden;
  border: 1px solid rgba(245, 241, 230, 0.14);
  background: #0a1622;
  transition: border-color 0.3s var(--ease);
}
.case-mini__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.02);
  transition: transform 0.45s var(--ease), filter 0.3s var(--ease);
}
.case-mini:hover .case-mini__media { border-color: rgba(228, 180, 92, 0.55); }
.case-mini:hover .case-mini__media img { transform: scale(1.06); filter: saturate(1.06); }
.case-mini__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.case-mini__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 5px;
  min-width: 0;
}
.case-mini__top b {
  overflow: hidden;
  font-family: var(--serif);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
  color: rgba(245, 241, 230, 0.94);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.case-mini__top i {
  flex: none;
  font-family: var(--mono);
  font-style: normal;
  font-size: 6.5px;
  letter-spacing: 0.04em;
  line-height: 1.3;
  color: rgba(245, 241, 230, 0.45);
  white-space: nowrap;
}
.case-mini__data {
  overflow: hidden;
  font-family: var(--mono);
  font-size: 7.5px;
  letter-spacing: 0.01em;
  line-height: 1.5;
  color: var(--gold);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.case-mini--cta {
  grid-column: span 2;
  justify-content: space-between;
  gap: 5px;
  padding: 10px 12px;
  border: 1px solid rgba(228, 180, 92, 0.3);
  background: rgba(228, 180, 92, 0.055);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.case-mini--cta:hover {
  border-color: rgba(228, 180, 92, 0.65);
  background: rgba(228, 180, 92, 0.09);
}
.case-mini__kicker {
  font-family: var(--mono);
  font-size: 6.5px;
  letter-spacing: 0.12em;
  color: rgba(245, 241, 230, 0.4);
}
.case-mini--cta b {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  color: rgba(245, 241, 230, 0.94);
}
.case-mini--cta em {
  font-style: normal;
  font-size: 8px;
  line-height: 1.5;
  color: rgba(228, 180, 92, 0.85);
}
.case-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.case-meta > div { padding: 17px 20px; border-right: 1px solid var(--line); }
.case-meta > div:last-child { border-right: 0; }
.case-meta__label {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
}
.case-meta p:not(.case-meta__label) {
  margin-top: 8px;
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.case-index__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--gold);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  color: var(--gold-deep);
}
.case-index__link:hover { color: var(--gold); }
.hit-card {
  position: relative;
  padding: 22px 24px 24px;
  border: 1px solid var(--line);
  background: var(--paper-3);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.hit-card:hover { transform: translateY(-3px); border-color: var(--gold); }
.hit-card .hit__num { font-size: 44px; }
.hit-card .hit__desc { max-width: 30em; }

/* ----------------------------------------------------------- 02 AI 服务 -- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--line);
}
.ai-card {
  display: flex;
  flex-direction: column;
  padding: 20px 22px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.18);
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}
.ai-card:hover { background: var(--paper-3); transform: translateY(-3px); }
.ai-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.ai-card__icon { width: 34px; height: 34px; color: var(--cyan-deep); }
.ai-card__icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ai-card__no { font-family: var(--mono); font-size: 9px; color: var(--gold-deep); }
.ai-card h3 {
  margin-top: 16px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.35;
}
.ai-card h3 a { transition: color 0.25s var(--ease); }
.ai-card h3 a:hover { color: var(--gold-deep); }
.ai-card__en {
  margin-top: 2px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.ai-card__blurb {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.ai-card ul { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 12px; }
.ai-card li {
  padding: 3px 7px;
  border: 1px solid var(--line);
  font-size: 10px;
  line-height: 1.5;
  color: var(--ink-2);
}
.ai-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.02em;
}
.ai-card__foot a { color: var(--gold-deep); }
.ai-card__foot a:hover { text-decoration: underline; }
.ai-card__foot a:last-child { color: var(--ink-3); }

.ai-directions { margin-top: clamp(46px, 5.4vw, 72px); }
.ai-detail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--line);
}
.ai-detail__card {
  display: flex;
  flex-direction: column;
  padding: 20px 24px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}
.ai-detail__card:hover { background: var(--paper-3); }
.ai-detail__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.ai-detail__no { font-family: var(--mono); font-size: 9px; color: var(--gold-deep); }
.ai-detail__en {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.ai-detail__card h3 {
  margin-top: 8px;
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 600;
}
.ai-detail__desc {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.ai-detail__points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}
.ai-detail__points li {
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.6;
  color: var(--ink-2);
}
.ai-detail__out {
  margin-top: 16px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ink-2);
}
.ai-detail__out span {
  margin-right: 8px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.08em;
  color: var(--gold-deep);
}
.ai-detail__course {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.04em;
  color: var(--gold-deep);
}
.ai-detail__course:hover { text-decoration: underline; }

/* --------------------------------------------------------- 03 商业策划 -- */
.planning-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--line);
}
.plan-card {
  padding: 20px 24px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}
.plan-card:hover { background: var(--paper-3); }
.plan-card__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}
.plan-card__no { font-family: var(--mono); font-size: 9px; color: var(--gold-deep); }
.plan-card__en {
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.plan-card h3 {
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
}
.plan-card__desc {
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-2);
}
.plan-card__deliver {
  margin-top: 14px;
  padding-top: 9px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 8.5px;
  line-height: 1.7;
  color: var(--gold-deep);
}

.planning-flow {
  margin-top: clamp(44px, 5.2vw, 68px);
  padding-top: clamp(24px, 3.2vw, 36px);
  border-top: 1px solid var(--ink);
}

.planning-cross {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}
.cross-card {
  position: relative;
  padding: 24px 26px 26px;
  border: 1px solid var(--ink);
  background: var(--paper-3);
  transition: background 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease);
}
.cross-card:hover {
  background: var(--space);
  border-color: var(--space);
  color: var(--paper);
}
.cross-card__tag {
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.12em;
  color: var(--gold-deep);
  transition: color 0.35s var(--ease);
}
.cross-card:hover .cross-card__tag { color: var(--gold); }
.cross-card h3 {
  margin-top: 8px;
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 600;
}
.cross-card p {
  margin-top: 8px;
  max-width: 30em;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-2);
  transition: color 0.35s var(--ease);
}
.cross-card:hover p { color: var(--paper-72); }
.cross-card__go {
  position: absolute;
  right: 24px;
  bottom: 20px;
  font-family: var(--mono);
  font-size: 17px;
  color: var(--gold-deep);
  transition: color 0.35s var(--ease), transform 0.35s var(--ease);
}
.cross-card:hover .cross-card__go { color: var(--gold); transform: translateX(4px); }

/* --------------------------------------------------- 05 关于我们的子区块 -- */
#cases { padding-top: clamp(50px, 5.8vw, 84px); padding-bottom: clamp(50px, 5.8vw, 84px); }
#contact { padding-block: clamp(50px, 5.8vw, 84px); }
.cases-head, .contact-block { margin-bottom: 24px; }
.band--space .sec-head__no {
  font-size: 42px;
  line-height: 1.05;
  padding-top: 4px;
  letter-spacing: -0.02em;
}
#ecosystem .sec-head { margin-bottom: 26px; }

@media (max-width: 1180px) {
  .ai-card__foot { font-size: 8px; }
  .brand__sub { font-size: 7px; padding-left: 7px; }
}