.page-contact {
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ============ 首屏 ============ */
.page-contact .contact-head {
  background: var(--paper);
  color: var(--text);
  border-bottom: 1px solid var(--hair-dark);
}

.page-contact .contact-head__inner {
  padding-top: clamp(30px, 5vw, 64px);
  padding-bottom: clamp(34px, 5.5vw, 72px);
}

.page-contact .contact-head__idx {
  margin: clamp(20px, 3vw, 30px) 0 0;
  display: block;
  color: var(--grey);
}

.page-contact .contact-head__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 850;
  font-size: clamp(44px, 9.5vw, 108px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .contact-head__lede {
  max-width: 62ch;
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(17, 23, 37, 0.82);
}

.page-contact .contact-head__facts {
  list-style: none;
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--hair-dark);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .fact {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
}

.page-contact .fact__num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 3.4vw, 28px);
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .fact__key {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--grey);
}

/* ============ 分栏：左渠道 / 右流程 ============ */
.page-contact .contact-split {
  background: var(--paper);
  color: var(--text);
  padding: clamp(26px, 4vw, 54px) 0 clamp(38px, 6vw, 74px);
}

.page-contact .contact-split__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(34px, 5vw, 46px);
}

.page-contact .contact-board {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 3.6vw, 42px) clamp(20px, 3vw, 34px) clamp(28px, 3.6vw, 40px);
  background: linear-gradient(158deg, var(--deep) 0%, var(--ink) 72%);
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  color: var(--paper);
}

.page-contact .contact-board::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 210px;
  height: 210px;
  background: radial-gradient(circle at 34% 34%, rgba(53, 232, 210, 0.3), transparent 68%);
  pointer-events: none;
}

.page-contact .contact-board__idx {
  display: block;
  color: var(--cyan);
}

.page-contact .contact-board__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 850;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-board__hint {
  margin: 12px 0 0;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--dim);
}

.page-contact .chan {
  display: block;
  position: relative;
  margin-top: 22px;
  padding: 16px 0 16px 16px;
  border-top: 1px solid var(--hair);
  border-left: 3px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.page-contact a.chan:hover,
.page-contact a.chan:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(53, 232, 210, 0.06);
  transform: translateX(2px);
  outline: none;
}

.page-contact .chan--static {
  border-left-color: rgba(123, 91, 255, 0.5);
}

.page-contact .chan__key {
  display: block;
  color: var(--cyan);
}

.page-contact .chan__val {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.42;
  letter-spacing: 0.02em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .chan__val--text {
  font-family: var(--font-body);
  font-size: 16.5px;
  letter-spacing: 0.01em;
  line-height: 1.7;
  overflow-wrap: normal;
}

.page-contact .chan__act {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--dim);
  border-bottom: 1px solid var(--hair-strong);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-contact .contact-board__ticks {
  height: 34px;
  margin-top: 28px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(242, 236, 225, 0.26) 0 1px,
    transparent 1px 15px
  );
}

.page-contact .contact-board__foot {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--grey);
}

/* ---- 右侧流程轴 ---- */
.page-contact .contact-steps__idx {
  display: block;
  color: var(--violet);
}

.page-contact .contact-steps__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 850;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-contact .contact-steps__lede {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: rgba(17, 23, 37, 0.78);
}

.page-contact .steps {
  list-style: none;
  margin: clamp(26px, 3.6vw, 38px) 0 0;
  padding: 0 0 0 28px;
  border-left: 1px solid var(--hair-dark);
}

.page-contact .step {
  position: relative;
  padding: 0 0 clamp(24px, 3vw, 34px);
}

.page-contact .step:last-child {
  padding-bottom: 0;
}

.page-contact .step::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -32px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--paper-2);
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-contact .step:hover::before {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .step__body {
  transition: transform var(--dur) var(--ease);
}

.page-contact .step:hover .step__body {
  transform: translateX(3px);
}

.page-contact .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-contact .step__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.4vw, 21px);
  line-height: 1.4;
  color: var(--text);
}

.page-contact .step__body p {
  margin: 8px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(17, 23, 37, 0.76);
}

.page-contact .contact-steps__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--hair-dark);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(17, 23, 37, 0.72);
}

.page-contact .contact-steps__fig {
  margin: clamp(26px, 3.6vw, 40px) 0 0;
}

/* ============ 服务时段与响应 ============ */
.page-contact .contact-window {
  background: linear-gradient(178deg, var(--ink) 0%, var(--deep) 130%);
  border-top: 1px solid var(--hair);
  padding: clamp(44px, 7vw, 100px) 0;
  color: var(--paper);
}

.page-contact .contact-window__idx {
  display: block;
  color: var(--cyan);
}

.page-contact .contact-window__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 5.2vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-window__cols {
  margin-top: clamp(26px, 4vw, 42px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}

.page-contact .contact-window__text p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--dim);
}

.page-contact .contact-window__text p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-window__stats {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-contact .stat {
  padding: 16px 16px 18px;
  background: var(--ink);
}

.page-contact .stat__k {
  display: block;
  color: var(--grey);
}

.page-contact .stat__v {
  margin: 9px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 20px);
  letter-spacing: 0.03em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .contact-window__fig {
  margin: clamp(32px, 4.6vw, 52px) 0 0;
}

/* ============ 提问前准备 ============ */
.page-contact .contact-prep {
  background: var(--paper);
  color: var(--text);
  padding: clamp(44px, 7vw, 96px) 0;
  border-top: 1px solid var(--hair-dark);
}

.page-contact .contact-prep__idx {
  display: block;
  color: var(--violet);
}

.page-contact .contact-prep__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 850;
  font-size: clamp(28px, 4.6vw, 48px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-contact .contact-prep__lede {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: rgba(17, 23, 37, 0.76);
}

.page-contact .prep-list {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-contact .prep-item {
  position: relative;
  padding: 22px 0 22px 46px;
  border-top: 1px solid var(--hair-dark);
  transition: background-color var(--dur) var(--ease);
}

.page-contact .prep-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 3px;
  height: 0;
  background: var(--cyan);
  transition: height var(--dur) var(--ease);
}

.page-contact .prep-item:hover::after {
  height: calc(100% - 48px);
}

.page-contact .prep-item__n {
  position: absolute;
  left: 14px;
  top: 24px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--grey);
}

.page-contact .prep-item__t {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16.5px, 2.2vw, 19px);
  line-height: 1.45;
  color: var(--text);
}

.page-contact .prep-item p {
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(17, 23, 37, 0.74);
}

/* ============ 渠道用途 ============ */
.page-contact .contact-scope {
  background: var(--ink);
  color: var(--paper);
  border-top: 1px solid var(--hair);
  padding: clamp(44px, 7vw, 100px) 0;
}

.page-contact .contact-scope__idx {
  display: block;
  color: var(--signal);
}

.page-contact .contact-scope__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 850;
  font-size: clamp(28px, 4.6vw, 50px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-scope__lede {
  margin: 14px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--dim);
}

.page-contact .scope-grid {
  margin-top: clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .scope-card {
  position: relative;
  background: var(--deep);
  border: 1px solid var(--hair-strong);
  border-radius: 2px;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .scope-card:hover,
.page-contact .scope-card[open] {
  border-color: var(--cyan);
}

.page-contact .scope-card__sum {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .scope-card__sum::-webkit-details-marker {
  display: none;
}

.page-contact .scope-card__mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--violet);
}

.page-contact .scope-card__label {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15.5px, 2.1vw, 18px);
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .scope-card__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-contact .scope-card__sign::before,
.page-contact .scope-card__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease);
}

.page-contact .scope-card__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-contact .scope-card__sign::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

.page-contact .scope-card[open] .scope-card__sign::after {
  transform: scaleY(0);
}

.page-contact .scope-card__body {
  padding: 0 18px 20px 46px;
  border-top: 1px solid var(--hair);
  padding-top: 16px;
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .scope-list li {
  position: relative;
  padding: 7px 0 7px 16px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .scope-card__p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--dim);
}

.page-contact .contact-scope__foot {
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--hair);
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--grey);
}

.page-contact .contact-scope__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 210, 0.34);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .contact-scope__foot a:hover,
.page-contact .contact-scope__foot a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
  outline: none;
}

/* ============ 图片容器 ============ */
.page-contact .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-contact .contact-head__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .contact-window__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .prep-item:nth-child(2n) {
    padding-left: 34px;
  }

  .page-contact .prep-item:nth-child(2n) .prep-item__n {
    left: 6px;
  }

  .page-contact .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .scope-card:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-split__grid {
    grid-template-columns: minmax(288px, 1fr) minmax(0, 1.72fr);
    column-gap: clamp(32px, 4vw, 68px);
    align-items: start;
  }

  .page-contact .contact-board {
    position: sticky;
    top: 28px;
  }

  .page-contact .contact-window__cols {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 1fr);
    align-items: start;
    column-gap: clamp(34px, 4vw, 60px);
  }

  .page-contact .contact-window__title {
    max-width: 22ch;
  }

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

  .page-contact .scope-card:first-child {
    grid-column: span 1;
  }
}

@media (min-width: 1200px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .prep-item:nth-child(2n) {
    padding-left: 46px;
  }

  .page-contact .prep-item:nth-child(2n) .prep-item__n {
    left: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan,
  .page-contact .chan__act,
  .page-contact .step__body,
  .page-contact .step::before,
  .page-contact .prep-item,
  .page-contact .prep-item::after,
  .page-contact .scope-card,
  .page-contact .scope-card__sign::before,
  .page-contact .scope-card__sign::after,
  .page-contact .contact-scope__foot a {
    transition: none;
  }

  .page-contact a.chan:hover,
  .page-contact a.chan:focus-visible {
    transform: none;
  }

  .page-contact .step:hover .step__body {
    transform: none;
  }
}