.page-contact {
  --contact-line: rgba(30, 74, 102, .95);
  --contact-soft: rgba(57, 230, 255, .22);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(3rem, 8vw, 6rem);
  background:
    radial-gradient(130% 100% at 88% -10%, rgba(110, 79, 130, .34), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-hero__bg {
  position: absolute;
  top: 0;
  right: 0;
  width: min(82%, 1000px);
  height: 100%;
  pointer-events: none;
  opacity: .34;
}

.page-contact .contact-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  max-width: 100%;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(258deg, rgba(6, 24, 38, .1) 0%, rgba(6, 24, 38, .82) 55%, var(--ink) 92%);
}

.page-contact .contact-hero .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  margin-top: clamp(1.75rem, 5vw, 3rem);
}

.page-contact .contact-hero__title {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin-top: clamp(1rem, 2.5vw, 1.5rem);
  max-width: 40rem;
  color: var(--steel);
}

.page-contact .contact-hero__quick {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  max-width: 42rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  background: var(--contact-line);
  border: 1px solid var(--contact-line);
}

.page-contact .quick-line {
  padding: .95rem 1.1rem;
  background: rgba(3, 32, 46, .9);
}

.page-contact .quick-line__label {
  display: block;
  margin-bottom: .4rem;
  font-size: .72rem;
  letter-spacing: .2em;
  color: var(--steel);
}

.page-contact .quick-line__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(.88rem, 3.2vw, 1.05rem);
  color: var(--cyan);
  word-break: break-all;
  line-height: 1.4;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.5rem, 4vw, 2rem);
}

/* 展签式联系卡 */
.page-contact .signboard {
  position: relative;
  padding: clamp(1.25rem, 3.5vw, 1.9rem);
  background: linear-gradient(165deg, rgba(11, 39, 64, .96), rgba(3, 32, 46, .98));
  border: 1px solid var(--contact-line);
}

.page-contact .signboard::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 34px;
  height: 34px;
  border-top: 2px solid var(--gold);
  border-left: 2px solid var(--gold);
}

.page-contact .signboard::after {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 34px;
  height: 34px;
  border-bottom: 2px solid var(--cyan);
  border-right: 2px solid var(--cyan);
  opacity: .7;
}

.page-contact .signboard__head {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-contact .signboard__row {
  display: grid;
  gap: .28rem;
  padding: .85rem 0;
  border-top: 1px solid rgba(30, 74, 102, .7);
}

.page-contact .signboard__row:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-contact .signboard__label {
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--steel-dim);
}

.page-contact .signboard__value {
  font-size: .95rem;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .signboard__note {
  margin: 1.1rem 0 0;
  padding-top: .9rem;
  border-top: 1px dashed rgba(30, 74, 102, .9);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 合作场景 ---------- */
.page-contact .scenes {
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
}

.page-contact .scenes__head {
  max-width: 46rem;
}

.page-contact .scenes__title,
.page-contact .channels__title,
.page-contact .flow__title {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.6vw, 2.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .scenes__lede,
.page-contact .channels__lede,
.page-contact .flow__lede {
  margin: .9rem 0 0;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .scene-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.75rem, 5vw, 3rem);
  background: var(--contact-line);
  border: 1px solid var(--contact-line);
}

.page-contact .scene {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .6rem 1.1rem;
  padding: clamp(1.25rem, 3.5vw, 2rem);
  background: var(--panel);
  outline: none;
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}

.page-contact .scene::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s var(--ease);
}

.page-contact .scene:hover,
.page-contact .scene:focus {
  background: #05293a;
  box-shadow: inset 0 0 0 1px rgba(57, 230, 255, .22);
}

.page-contact .scene:hover::before,
.page-contact .scene:focus::before {
  transform: scaleY(1);
}

.page-contact .scene__num {
  font-size: clamp(1.5rem, 4.6vw, 2.1rem);
  line-height: 1;
  padding-top: .1rem;
}

.page-contact .scene__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .scene__desc {
  margin: .55rem 0 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .scene__hint {
  grid-column: 1 / -1;
  margin: .85rem 0 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--steel-dim);
}

.page-contact .scene__hint::before {
  content: "▸ ";
  color: var(--cyan);
}

.page-contact .scene__prep {
  grid-column: 1 / -1;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .45s var(--ease), opacity .3s var(--ease), margin-top .35s var(--ease);
}

.page-contact .scene:hover .scene__prep,
.page-contact .scene:focus .scene__prep {
  max-height: 14rem;
  margin-top: .9rem;
  opacity: 1;
}

.page-contact .scene__prep-label {
  display: block;
  margin-bottom: .3rem;
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .scene__prep-text {
  margin: 0;
  padding-top: .65rem;
  border-top: 1px dashed rgba(30, 74, 102, .9);
  font-size: .86rem;
  line-height: 1.75;
  color: var(--cyan-soft);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channels {
  border-top: 1px solid var(--contact-line);
  background: var(--ink);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(.85rem, 2.2vw, 1.4rem);
  margin-top: clamp(1.75rem, 5vw, 3rem);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(1.3rem, 3.2vw, 1.9rem);
  background: var(--panel);
  border: 1px solid var(--contact-line);
  transition: border-color .3s var(--ease), box-shadow .35s var(--ease), transform .3s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 26px;
  height: 26px;
  border-top: 2px solid rgba(57, 230, 255, .55);
  border-left: 2px solid rgba(57, 230, 255, .55);
  transition: border-color .3s var(--ease);
}

.page-contact .channel:hover {
  transform: translateY(-3px);
  border-color: rgba(244, 184, 96, .65);
  box-shadow: 0 22px 46px -30px rgba(57, 230, 255, .8);
}

.page-contact .channel:hover::before {
  border-color: var(--gold);
}

.page-contact .channel--primary {
  background: linear-gradient(160deg, rgba(11, 39, 64, .98), rgba(3, 32, 46, .98));
  border-color: rgba(244, 184, 96, .45);
}

.page-contact .channel__label {
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--steel);
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.4vw, 1.2rem);
  line-height: 1.5;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .channel__value--addr {
  font-family: var(--font-body);
  font-size: .98rem;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .channel__hint {
  margin: 0;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .channel__tag {
  align-self: flex-start;
  margin-top: auto;
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.page-contact .channels__note {
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 1.1rem 1.25rem;
  border-left: 3px solid var(--gold);
  background: rgba(11, 39, 64, .7);
  font-size: .88rem;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 流程 ---------- */
.page-contact .flow {
  border-top: 1px solid var(--contact-line);
  background:
    linear-gradient(180deg, var(--ink) 0%, rgba(110, 79, 130, .26) 46%, var(--ink) 100%);
}

.page-contact .flow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.25rem);
}

.page-contact .flow__figure {
  margin: 0;
}

.page-contact .flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--contact-line);
  object-fit: cover;
}

.page-contact .flow__caption {
  margin: .75rem 0 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--steel-dim);
}

.page-contact .flow__head {
  max-width: 34rem;
}

.page-contact .flow-step {
  border-top: 1px solid rgba(30, 74, 102, .85);
}

.page-contact .flow-step:last-of-type {
  border-bottom: 1px solid rgba(30, 74, 102, .85);
}

.page-contact .flow-step:first-of-type {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
}

.page-contact .flow-step__summary {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: 1rem 0;
  list-style: none;
  cursor: pointer;
}

.page-contact .flow-step__summary::-webkit-details-marker {
  display: none;
}

.page-contact .flow-step__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--gold);
}

.page-contact .flow-step[open] .flow-step__summary::after {
  content: "−";
}

.page-contact .flow-step__index {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--gold);
  background: rgba(3, 32, 46, .95);
  border: 1px solid var(--contact-line);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease), color .3s var(--ease);
}

.page-contact .flow-step[open] .flow-step__index {
  border-color: var(--gold);
  color: var(--gold-soft);
  box-shadow: 0 0 0 4px rgba(244, 184, 96, .12);
}

.page-contact .flow-step__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .flow-step__body {
  padding: 0 0 1.15rem 3.2rem;
}

.page-contact .flow-step__body p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 收束 ---------- */
.page-contact .closing {
  border-top: 1px solid var(--contact-line);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-contact .closing__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .closing__block {
  padding: clamp(1.3rem, 3.2vw, 2rem);
  background: rgba(3, 32, 46, .82);
  border: 1px solid var(--contact-line);
}

.page-contact .closing__block--quiet {
  background: rgba(110, 79, 130, .2);
  border-color: rgba(110, 79, 130, .5);
}

.page-contact .closing__addr {
  margin: .75rem 0 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .closing__meta {
  margin: .7rem 0 0;
  font-size: .86rem;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .closing__icp {
  margin: 1.1rem 0 0;
  padding-top: .85rem;
  border-top: 1px solid rgba(30, 74, 102, .7);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--steel-dim);
}

.page-contact .closing__links {
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .closing__links li {
  border-top: 1px solid rgba(232, 244, 250, .1);
}

.page-contact .closing__links li:first-child {
  border-top: 0;
}

.page-contact .closing__links a {
  display: block;
  padding: .7rem 0;
  font-size: .9rem;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  transition: color .25s var(--ease), padding-left .25s var(--ease);
}

.page-contact .closing__links a:hover,
.page-contact .closing__links a:focus-visible {
  color: var(--cyan);
  padding-left: .4rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .contact-hero__quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .scene-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .closing__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-contact .flow__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-contact .flow__figure {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 759px) {
  .page-contact .scene__hint {
    display: none;
  }

  .page-contact .scene__prep {
    max-height: none;
    margin-top: .9rem;
    opacity: 1;
  }

  .page-contact .scene__desc,
  .page-contact .channel__hint,
  .page-contact .flow-step__body p {
    font-size: .9rem;
  }

  .page-contact .flow-step__body {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .scene,
  .page-contact .scene__prep,
  .page-contact .scene::before,
  .page-contact .channel,
  .page-contact .flow-step__index,
  .page-contact .closing__links a {
    transition: none;
  }

  .page-contact .channel:hover {
    transform: none;
  }
}