.page-contact {
  --pc-gutter: clamp(16px, 3.4vw, 44px);
  --pc-sec-gap: clamp(46px, 6.4vw, 92px);
  --pc-line: rgba(159, 184, 174, .22);
  --pc-line-soft: rgba(159, 184, 174, .12);
  color: var(--fog);
  overflow-x: clip;
}

.page-contact .pc-shell {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-inline: var(--pc-gutter);
}

/* ---------- 页头 ---------- */
.page-contact .pc-head {
  position: relative;
  padding-block: clamp(24px, 4.6vw, 52px) clamp(22px, 3.4vw, 34px);
}

.page-contact .pc-head::before {
  content: "";
  position: absolute;
  inset: 0 calc(var(--pc-gutter) * -1);
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 96% at 8% 0%, #000 0%, transparent 74%);
  mask-image: radial-gradient(120% 96% at 8% 0%, #000 0%, transparent 74%);
}

.page-contact .pc-crumb {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sage);
}

.page-contact .pc-crumb a {
  color: var(--sage);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .pc-crumb a:hover,
.page-contact .pc-crumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

.page-contact .pc-crumb .sep {
  color: rgba(159, 184, 174, .45);
}

.page-contact .pc-crumb [aria-current="page"] {
  color: var(--amber);
}

.page-contact .pc-head__label {
  position: relative;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  color: var(--cyan);
}

.page-contact .pc-head__title {
  position: relative;
  margin: clamp(14px, 2vw, 22px) 0 0;
  padding-inline-start: .06em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -.015em;
  transform: var(--tilt);
  transform-origin: left center;
}

.page-contact .pc-head__lead {
  position: relative;
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.3vw, 1.16rem);
  line-height: 1.9;
  color: rgba(241, 246, 242, .86);
}

/* ---------- 首屏配图 ---------- */
.page-contact .pc-hero {
  position: relative;
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--pc-line);
  background: var(--grass);
  overflow: hidden;
}

.page-contact .pc-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(53, 224, 176, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 224, 176, .09) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-contact .pc-hero__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--fog);
  background: rgba(4, 15, 12, .82);
  border-top: 1px solid var(--line-cyan);
  border-right: 1px solid var(--line-cyan);
}

/* ---------- 章节骨架 ---------- */
.page-contact .pc-sec {
  padding-block: var(--pc-sec-gap);
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .pc-sec__head {
  display: grid;
  gap: 12px;
  max-width: 68ch;
  margin-bottom: clamp(26px, 3.8vw, 48px);
}

.page-contact .pc-sec__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .pc-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.2vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-contact .pc-sec__intro {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--sage);
}

/* ---------- 场景卡 ---------- */
.page-contact .pc-scenes {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .pc-scene {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.6vw, 32px);
  background: var(--night);
}

.page-contact .pc-scene::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color .28s var(--ease);
}

.page-contact .pc-scene:hover::before,
.page-contact .pc-scene:focus-within::before {
  border-color: var(--orange);
}

.page-contact .pc-scene__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--amber);
}

.page-contact .pc-scene__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 1.9vw, 1.42rem);
  line-height: 1.3;
}

.page-contact .pc-scene__who {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(241, 246, 242, .88);
}

.page-contact .pc-scene__need {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--pc-line);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--sage);
}

.page-contact .pc-scene__need strong {
  color: var(--cyan);
  font-weight: 600;
}

.page-contact .pc-scene__actions {
  margin-top: auto;
  padding-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 联系方式 ---------- */
.page-contact .pc-contact {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

.page-contact .pc-contact__list {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .pc-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "key key"
    "val btn";
  gap: 8px 14px;
  align-items: center;
  padding: 16px 18px;
  background: var(--panel);
}

.page-contact .pc-contact__key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-contact .pc-contact__val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: clamp(.92rem, 1.5vw, 1.06rem);
  line-height: 1.5;
  color: var(--fog);
  word-break: break-word;
}

.page-contact .pc-contact__val--text {
  font-family: var(--font-display);
  font-size: clamp(.95rem, 1.5vw, 1.08rem);
  word-break: normal;
}

.page-contact .pc-contact__row .copy-btn {
  grid-area: btn;
  white-space: nowrap;
  font-size: 12px;
  padding: 6px 14px;
}

.page-contact .copy-btn[data-copied="true"] {
  color: var(--cyan);
  border-color: var(--line-cyan);
}

.page-contact .pc-contact__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--blue);
  font-size: .92rem;
  line-height: 1.8;
  color: var(--sage);
  max-width: 56ch;
}

.page-contact .pc-contact__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--pc-line);
  background: var(--grass);
  overflow: hidden;
}

.page-contact .pc-contact__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .pc-contact__figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--fog);
  background: rgba(4, 15, 12, .84);
  border-top: 1px solid var(--blue);
  border-right: 1px solid var(--blue);
}

/* ---------- 流程时间线 ---------- */
.page-contact .pc-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .pc-flow__step {
  position: relative;
  padding: 20px 0 20px 28px;
}

.page-contact .pc-flow__step::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--pc-line);
}

.page-contact .pc-flow__step:first-child::before {
  top: 30px;
}

.page-contact .pc-flow__step:last-child::before {
  bottom: calc(100% - 34px);
}

.page-contact .pc-flow__dot {
  position: absolute;
  left: 0;
  top: 26px;
  width: 13px;
  height: 13px;
  background: var(--night);
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .pc-flow__step:hover .pc-flow__dot {
  background: var(--cyan);
}

.page-contact .pc-flow__tag {
  display: inline-block;
  margin: 0 0 8px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--amber);
  border: 1px solid rgba(255, 200, 87, .34);
}

.page-contact .pc-flow__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-contact .pc-flow__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--sage);
}

.page-contact .pc-flow__out {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.6;
  color: var(--cyan);
}

.page-contact .pc-flow__aside {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--pc-line-soft);
  font-size: .92rem;
  line-height: 1.8;
  color: var(--sage);
}

.page-contact .pc-flow__aside a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 155, 255, .4);
}

.page-contact .pc-flow__aside a:hover,
.page-contact .pc-flow__aside a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* ---------- 材料清单 ---------- */
.page-contact .pc-materials__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .pc-mat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px 22px;
  background: var(--night);
  transition: background-color .25s var(--ease);
}

.page-contact .pc-mat:hover {
  background: var(--grass);
}

.page-contact .pc-mat__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .pc-mat__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
}

.page-contact .pc-mat__body p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 看台共建 ---------- */
.page-contact .pc-build {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.page-contact .pc-build__ways {
  display: grid;
  gap: 18px;
}

.page-contact .pc-way {
  position: relative;
  padding-left: 20px;
  border-left: 1px solid var(--pc-line);
}

.page-contact .pc-way::before {
  content: "";
  position: absolute;
  left: -3px;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--blue);
}

.page-contact .pc-way h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
}

.page-contact .pc-way p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--sage);
}

.page-contact .pc-build__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
  align-content: start;
}

.page-contact .pc-stat {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: var(--panel);
}

.page-contact .pc-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  line-height: 1;
  color: var(--cyan);
}

.page-contact .pc-stat__label {
  font-size: .84rem;
  line-height: 1.6;
  color: var(--sage);
}

/* ---------- 常见问题 ---------- */
.page-contact .pc-faq {
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .pc-faq details {
  border-top: 1px solid var(--pc-line);
}

.page-contact .pc-faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 46px 18px 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  transition: color .25s var(--ease);
}

.page-contact .pc-faq summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-faq summary::after {
  content: "+";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--cyan);
}

.page-contact .pc-faq details[open] summary::after {
  content: "–";
}

.page-contact .pc-faq summary:hover,
.page-contact .pc-faq summary:focus-visible {
  color: var(--cyan);
}

.page-contact .pc-faq__body {
  padding: 0 0 20px;
  max-width: 72ch;
}

.page-contact .pc-faq__body p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--sage);
}

.page-contact .pc-faq__body a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 155, 255, .4);
}

.page-contact .pc-faq__body a:hover,
.page-contact .pc-faq__body a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .pc-materials__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .pc-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-flow__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-contact .pc-flow__step {
    padding: 30px 18px 0 0;
  }

  .page-contact .pc-flow__step::before {
    left: 0;
    right: 0;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .page-contact .pc-flow__step:first-child::before {
    top: 6px;
  }

  .page-contact .pc-flow__step:last-child::before {
    bottom: auto;
  }

  .page-contact .pc-flow__dot {
    top: 0;
    left: 0;
  }
}

@media (hover: hover) and (min-width: 860px) {
  .page-contact .pc-flow__out {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .32s var(--ease), opacity .32s var(--ease);
  }

  .page-contact .pc-flow__step:hover .pc-flow__out,
  .page-contact .pc-flow__step:focus-within .pc-flow__out {
    max-height: 90px;
    opacity: 1;
  }
}

@media (min-width: 980px) {
  .page-contact .pc-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, .88fr);
    align-items: start;
  }

  .page-contact .pc-build {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-contact .pc-head__title {
    transform: none;
  }

  .page-contact .pc-contact__row {
    grid-template-areas:
      "key key"
      "val val"
      "btn btn";
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .pc-contact__row .copy-btn {
    justify-self: start;
  }

  .page-contact .pc-build__stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-scene::before,
  .page-contact .pc-flow__dot,
  .page-contact .pc-mat,
  .page-contact .pc-flow__out {
    transition: none;
  }

  .page-contact .pc-head__title {
    transform: none;
  }
}