.page-contact {
  --pc-shadow: 0 26px 60px -30px rgba(10, 43, 36, .48);
  --pc-shadow-soft: 0 14px 32px -22px rgba(10, 43, 36, .34);
  --pc-line: rgba(10, 43, 36, .12);
  position: relative;
}

.page-contact .section {
  padding-block: clamp(44px, 6.5vw, 92px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-top: clamp(20px, 3vw, 40px);
  background:
    radial-gradient(120% 90% at 92% 4%, rgba(255, 178, 122, .28), transparent 58%),
    radial-gradient(80% 70% at 4% 96%, rgba(10, 43, 36, .07), transparent 60%);
}

.page-contact .contact-hero__grid {
  align-items: end;
  row-gap: clamp(30px, 4.5vw, 52px);
  margin-top: clamp(18px, 3vw, 32px);
}

.page-contact .contact-hero__intro .eyebrow {
  color: var(--flame-deep);
}

.page-contact .contact-hero__intro .display--l {
  font-size: clamp(31px, 5.2vw, 62px);
  line-height: 1.08;
  letter-spacing: .015em;
  margin: 14px 0 20px;
  max-width: 17ch;
}

.page-contact .contact-hero__intro .lede {
  max-width: 38em;
}

.page-contact .contact-hero__intro .tag-row {
  margin-top: 24px;
}

.page-contact .contact-hero__figure .figure__frame--wide {
  transform: rotate(-1.1deg);
  border-radius: var(--r-lg) var(--r-lg) var(--r-lg) 60px;
  overflow: hidden;
}

.page-contact .contact-hero__figure .figure__img,
.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 渠道 + 准备 ---------- */

.page-contact .contact-body {
  background: linear-gradient(180deg, rgba(228, 232, 230, .55), transparent 42%);
}

.page-contact .contact-body__grid {
  row-gap: clamp(30px, 4.5vw, 56px);
}

.page-contact .contact-card {
  position: relative;
  background: linear-gradient(168deg, var(--ink) 0%, var(--ink-2) 78%, var(--ink-3) 100%);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: clamp(26px, 3.4vw, 42px);
  box-shadow: var(--pc-shadow);
  overflow: hidden;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 32%, rgba(255, 106, 26, .3), transparent 68%);
  pointer-events: none;
}

.page-contact .contact-card__tag {
  color: var(--flame);
  letter-spacing: .22em;
}

.page-contact .contact-card .display--m {
  margin: 12px 0 14px;
}

.page-contact .contact-card__lede {
  color: rgba(250, 247, 240, .76);
  font-size: 15px;
  line-height: 1.78;
  margin: 0 0 22px;
  max-width: 32em;
}

.page-contact .contact-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .contact-card .contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid rgba(250, 247, 240, .16);
}

.page-contact .contact-card .contact-row__key {
  font-size: 12px;
  letter-spacing: .16em;
  color: rgba(250, 247, 240, .58);
}

.page-contact .contact-card .contact-row__val {
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-card .contact-row__val--mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
  font-size: 16px;
}

.page-contact .contact-card .contact-row:last-child .contact-row__val--mono {
  color: var(--flame-soft);
}

.page-contact .contact-card__note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(250, 247, 240, .6);
  border-left: 2px solid var(--flame);
  padding-left: 12px;
}

/* 准备清单 */

.page-contact .prep-col .index-tag {
  color: var(--flame-deep);
}

.page-contact .prep-col .display--m {
  margin: 12px 0 16px;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.16;
  max-width: 20ch;
}

.page-contact .prep-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  align-items: start;
  padding: 15px 18px;
  border-radius: var(--r-md);
  background: var(--cool);
  border-left: 3px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .prep-list__item:has(input:checked) {
  background: #ffffff;
  border-left-color: var(--flame);
  box-shadow: var(--pc-shadow-soft);
}

.page-contact .prep-list input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 19px;
  height: 19px;
  margin: 3px 0 0;
  border: 2px solid var(--gray);
  border-radius: 6px;
  background: var(--paper);
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .prep-list input[type="checkbox"]::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(-45deg) scale(0);
  transition: transform var(--dur) var(--ease);
}

.page-contact .prep-list input[type="checkbox"]:checked {
  background: var(--flame);
  border-color: var(--flame);
}

.page-contact .prep-list input[type="checkbox"]:checked::after {
  transform: rotate(-45deg) scale(1);
}

.page-contact .prep-list input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: 2px;
}

.page-contact .prep-list__label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
}

.page-contact .prep-list__hint {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.72;
  color: var(--text-2);
}

.page-contact .prep-figure {
  margin: 30px 0 0;
}

.page-contact .prep-figure .figure__frame--square {
  border-radius: 60px var(--r-md) var(--r-md) var(--r-md);
  overflow: hidden;
}

.page-contact .prep-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 处理节奏 ---------- */

.page-contact .flow {
  background: linear-gradient(180deg, rgba(228, 232, 230, .7), rgba(250, 247, 240, 0) 72%);
}

.page-contact .flow__head {
  max-width: 60ch;
  margin-bottom: clamp(26px, 3.4vw, 44px);
}

.page-contact .flow__head .index-tag {
  color: var(--flame-deep);
}

.page-contact .flow__head .display--m {
  margin: 12px 0 0;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.16;
}

.page-contact .flow__track {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  position: relative;
}

.page-contact .flow-step {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--pc-line);
  border-radius: var(--r-md);
  padding: 18px 20px 20px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .flow-step[open] {
  border-color: var(--flame);
  box-shadow: var(--pc-shadow-soft);
}

.page-contact .flow-step__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .flow-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--flame-deep);
  background: rgba(255, 106, 26, .12);
  border-radius: 999px;
  padding: 4px 10px;
  flex: none;
}

.page-contact .flow-step__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: .01em;
}

.page-contact .flow-step__body {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-2);
  max-width: 34em;
}

/* ---------- 合作与授权 ---------- */

.page-contact .partner-panel {
  position: relative;
  background: linear-gradient(150deg, var(--ink-2) 0%, var(--ink) 62%, #061C18 100%);
  color: var(--paper);
  border-radius: var(--r-lg);
  padding: clamp(28px, 4vw, 56px);
  overflow: hidden;
}

.page-contact .partner-panel::before {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -110px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 1px solid rgba(255, 178, 122, .24);
  pointer-events: none;
}

.page-contact .partner-panel__tag {
  color: var(--flame);
  letter-spacing: .22em;
}

.page-contact .partner-panel__grid {
  row-gap: clamp(26px, 3.6vw, 44px);
  margin-top: 16px;
}

.page-contact .partner-panel .display--m {
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.16;
  margin: 0 0 18px;
  max-width: 18ch;
}

.page-contact .partner-panel__lede {
  margin: 0 0 14px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(250, 247, 240, .8);
  max-width: 34em;
}

.page-contact .partner-panel__exlabel {
  font-size: 12px;
  letter-spacing: .16em;
  color: rgba(250, 247, 240, .56);
  margin: 0 0 12px;
}

.page-contact .subject-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .subject-list__item {
  display: grid;
  gap: 6px;
  padding: 15px 18px;
  border-radius: var(--r-md);
  background: rgba(250, 247, 240, .07);
  border-left: 3px solid var(--flame);
}

.page-contact .subject-list__code {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: .01em;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .subject-list__note {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(250, 247, 240, .62);
}

/* ---------- 自助入口 ---------- */

.page-contact .selfserve__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3.2vw, 40px);
}

.page-contact .selfserve__head .index-tag {
  color: var(--flame-deep);
}

.page-contact .selfserve__head .display--m {
  margin: 12px 0 14px;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.16;
}

.page-contact .selfserve__grid {
  row-gap: 14px;
}

.page-contact .selfserve-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  border-radius: var(--r-md);
  background: var(--cool);
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--text);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .selfserve-card:hover,
.page-contact .selfserve-card:focus-visible {
  background: #ffffff;
  border-color: var(--flame);
  transform: translateY(-4px);
}

.page-contact .selfserve-card__idx {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--flame-deep);
}

.page-contact .selfserve-card__title {
  font-size: 16px;
  line-height: 1.62;
  font-weight: 600;
  flex: 1;
}

.page-contact .selfserve-card__go {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gray);
}

.page-contact .selfserve-card:hover .selfserve-card__go {
  color: var(--flame-deep);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .flow__track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 981px) {
  .page-contact .contact-card-col {
    position: relative;
  }

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

@media (min-width: 1025px) {
  .page-contact .flow__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .flow__track::before {
    content: "";
    position: absolute;
    top: 34px;
    left: 6%;
    right: 6%;
    height: 1px;
    background: repeating-linear-gradient(90deg, rgba(10, 43, 36, .2) 0 10px, transparent 10px 20px);
    z-index: 0;
  }

  .page-contact .flow-step {
    position: relative;
    z-index: 1;
  }
}

@media (max-width: 699px) {
  .page-contact .contact-hero__figure .figure__frame--wide {
    transform: none;
    border-radius: var(--r-md);
  }

  .page-contact .prep-figure .figure__frame--square {
    border-radius: var(--r-md);
  }

  .page-contact .contact-card {
    border-radius: var(--r-md);
  }

  .page-contact .partner-panel {
    border-radius: var(--r-md);
  }
}