.page-contact {
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(56px, 8vw, 104px);
  overflow-x: hidden;
}

.page-contact .ct-crumbs {
  padding-top: clamp(18px, 3vw, 28px);
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.page-contact .ct-crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏分屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  padding-block: clamp(26px, 4vw, 44px) clamp(40px, 6vw, 76px);
  border-bottom: 2px solid var(--edge);
}

.page-contact .ct-eyebrow {
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-contact .ct-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.1rem, 5.6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-hero__lede {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--edge);
}

.page-contact .ct-line {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-top: 1px solid var(--edge);
}

.page-contact .ct-line__ico {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--edge);
  color: var(--cyan);
  background: var(--ink-800);
}

.page-contact .ct-line__body {
  display: block;
  min-width: 0;
}

.page-contact .ct-line__k {
  display: block;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-contact .ct-line__v {
  display: block;
  font-family: var(--ff-mono);
  font-size: clamp(1rem, 2.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--cyan-lt);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

.page-contact .ct-line__v--plain {
  font-family: var(--ff-sans);
  font-weight: 500;
  font-size: clamp(0.95rem, 1.9vw, 1.15rem);
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .ct-line__n {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .ct-hero__media {
  position: relative;
  margin: 0;
  min-height: 240px;
  border: 2px solid var(--edge);
  background: var(--ink-800);
  box-shadow: 0 8px 0 var(--ink-700);
  overflow: hidden;
}

.page-contact .ct-hero__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
  filter: brightness(0.72) saturate(0.9);
}

.page-contact .ct-hero__badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 9px 13px;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-lt);
}

/* ---------- 主体分栏 ---------- */
.page-contact .ct-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(36px, 5vw, 68px);
}

.page-contact .ct-sec {
  padding-block: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--edge);
}

.page-contact .ct-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .ct-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-contact .ct-sec__num {
  font-family: var(--ff-mono);
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--edge);
}

.page-contact .ct-sec__title {
  margin: 0;
  font-size: clamp(1.25rem, 2.5vw, 1.7rem);
  font-weight: 900;
  line-height: 1.25;
  color: var(--paper);
}

.page-contact .ct-sec__lede {
  margin: 0 0 22px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-sec__lede a,
.page-contact .ct-route__p a,
.page-contact .ct-formbox__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  transition: border-color 0.18s ease;
}

.page-contact .ct-sec__lede a:hover,
.page-contact .ct-route__p a:hover,
.page-contact .ct-formbox__foot a:hover,
.page-contact .ct-sec__lede a:focus-visible,
.page-contact .ct-route__p a:focus-visible,
.page-contact .ct-formbox__foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 01 问题分类 ---------- */
.page-contact .ct-routes {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .ct-route {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--edge);
  transition: background-color 0.18s ease;
}

.page-contact .ct-route:last-child {
  border-bottom: 1px solid var(--edge);
}

.page-contact .ct-route:hover {
  background: var(--ink-800);
}

.page-contact .ct-route__n {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--orange);
  padding-top: 3px;
}

.page-contact .ct-route__c {
  min-width: 0;
}

.page-contact .ct-route__h {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .ct-route__p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .ct-route__via {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12.5px;
  color: var(--mist);
}

/* ---------- 02 准备清单 ---------- */
.page-contact .ct-two {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.page-contact .ct-prep {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
}

.page-contact .ct-prep li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 0;
  border-top: 1px dashed var(--edge);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper);
}

.page-contact .ct-prep li:last-child {
  border-bottom: 1px dashed var(--edge);
}

.page-contact .ct-prep__k {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 12px;
  color: var(--ink-900);
  background: var(--cyan);
  font-weight: 700;
}

.page-contact .ct-prep__note {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--orange);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-fig {
  margin: 0;
  border: 2px solid var(--edge);
  background: var(--ink-800);
  box-shadow: 0 8px 0 var(--ink-700);
  overflow: hidden;
}

.page-contact .ct-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: brightness(0.8) saturate(1.05);
}

/* ---------- 03 合作 ---------- */
.page-contact .ct-coop {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}

.page-contact .ct-coop__item {
  display: grid;
  grid-template-columns: minmax(66px, auto) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 3px solid var(--violet);
  transition: border-left-color 0.18s ease, transform 0.18s ease;
}

.page-contact .ct-coop__item:hover {
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

.page-contact .ct-coop__n {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .ct-coop__t {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .ct-coop__tail {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 34em;
}

/* ---------- 04 回复时间 ---------- */
.page-contact .ct-when {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .ct-when li {
  position: relative;
  padding: 12px 0 12px 20px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  border-top: 1px solid var(--edge);
}

.page-contact .ct-when li:last-child {
  border-bottom: 1px solid var(--edge);
}

.page-contact .ct-when li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}

.page-contact .ct-when__k {
  display: inline-block;
  margin-right: 6px;
  color: var(--orange);
  font-weight: 700;
}

/* ---------- 右栏留言 ---------- */
.page-contact .ct-aside {
  min-width: 0;
}

.page-contact .ct-formbox {
  border: 2px solid var(--edge);
  background: var(--ink-800);
  box-shadow: 0 8px 0 var(--ink-700);
  border-radius: var(--r);
  padding: clamp(20px, 2.6vw, 30px);
}

.page-contact .ct-formbox__eyebrow {
  margin: 0 0 12px;
  color: var(--violet);
}

.page-contact .ct-formbox__title {
  margin: 0 0 10px;
  font-size: clamp(1.2rem, 2.2vw, 1.45rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .ct-formbox__intro {
  margin: 0 0 22px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-field {
  margin: 0 0 20px;
  min-width: 0;
}

.page-contact .ct-field > label,
.page-contact .ct-field legend {
  display: block;
  padding: 0;
  margin-bottom: 8px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .ct-field input[type="text"],
.page-contact .ct-field input[type="email"],
.page-contact .ct-field textarea {
  display: block;
  width: 100%;
  box-sizing: border-box;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--edge);
  border-radius: 0;
  color: var(--paper);
  font-family: var(--ff-sans);
  font-size: 15px;
  line-height: 1.6;
  padding: 7px 0 9px;
  transition: box-shadow 0.18s ease, border-color 0.18s ease;
}

.page-contact .ct-field textarea {
  resize: vertical;
  min-height: 96px;
}

.page-contact .ct-field input:focus,
.page-contact .ct-field textarea:focus {
  outline: none;
  border-bottom-color: var(--cyan);
  box-shadow: inset 0 -2px 0 var(--cyan);
}

.page-contact .ct-field input:user-invalid,
.page-contact .ct-field textarea:user-invalid {
  border-bottom-color: var(--orange);
  box-shadow: inset 0 -2px 0 var(--orange);
}

.page-contact .ct-radios {
  display: grid;
  gap: 0;
}

.page-contact .ct-radio {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  column-gap: 10px;
  align-items: center;
  padding: 9px 0;
  border-bottom: 1px dashed var(--edge);
  cursor: pointer;
}

.page-contact .ct-radio:last-child {
  border-bottom: 0;
}

.page-contact .ct-radio input {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 14px;
  height: 14px;
  margin: 0;
  border: 2px solid var(--edge);
  background: transparent;
  transition: border-color 0.18s ease;
}

.page-contact .ct-radio input:checked {
  border-color: var(--cyan);
}

.page-contact .ct-radio input:checked::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--cyan);
}

.page-contact .ct-radio input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .ct-radio__label {
  font-size: 14.5px;
  color: var(--paper);
}

.page-contact .ct-radio__hint {
  display: none;
  grid-column: 2;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--cyan-lt);
}

.page-contact .ct-radio input:checked ~ .ct-radio__hint {
  display: block;
}

.page-contact .ct-send {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  box-sizing: border-box;
  margin-top: 4px;
  box-shadow: 0 8px 0 var(--edge);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .ct-send:hover,
.page-contact .ct-send:focus-visible {
  transform: translateY(2px);
  box-shadow: 0 4px 0 var(--edge);
}

.page-contact .ct-formbox__foot {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--edge);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-formbox__foot .mono {
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .ct-two {
    grid-template-columns: minmax(0, 1fr) minmax(0, 230px);
    gap: 28px;
  }

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

  .page-contact .ct-coop__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .ct-coop__n {
    font-size: 2rem;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .ct-hero__media {
    min-height: 420px;
  }

  .page-contact .ct-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, 372px);
    align-items: start;
  }

  .page-contact .ct-aside {
    position: sticky;
    top: calc(var(--bar-h-sm) + 18px);
  }
}

@media (max-width: 899px) {
  .page-contact .ct-hero__media {
    min-height: 220px;
    order: -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-route,
  .page-contact .ct-coop__item,
  .page-contact .ct-send,
  .page-contact .ct-line__v {
    transition: none;
  }

  .page-contact .ct-send:hover,
  .page-contact .ct-send:focus-visible {
    transform: none;
  }
}