.page-contact {
  --ct-cut: 18px;
  --ct-cut-lg: 24px;
  background: var(--night);
  color: var(--white);
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

.page-contact h1 {
  font-size: clamp(34px, 7vw, var(--step-7));
  font-weight: 900;
  max-width: 16ch;
}

.page-contact h2 {
  font-size: clamp(26px, 5vw, var(--step-5));
  font-weight: 900;
  max-width: 20ch;
}

.page-contact h3 {
  font-size: var(--step-3);
  font-weight: 800;
}

.page-contact p {
  margin: 0;
  line-height: 1.75;
}

.page-contact .mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.page-contact .eyebrow {
  margin-bottom: 14px;
}

/* ---------- 首屏 ---------- */
.ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 34px 0 76px;
  background: linear-gradient(168deg, var(--night) 0%, #0d2036 58%, var(--ink) 100%);
}

.ct-hero::before {
  content: "";
  position: absolute;
  left: -14%;
  right: -14%;
  bottom: 8%;
  height: 42%;
  background: var(--paper);
  opacity: 0.055;
  transform: rotate(-8deg);
  z-index: -1;
}

.ct-hero::after {
  content: "";
  position: absolute;
  right: -6%;
  top: -18%;
  width: 46%;
  height: 120%;
  background: linear-gradient(200deg, rgba(23, 195, 166, 0.16), rgba(23, 195, 166, 0) 68%);
  transform: rotate(-14deg);
  z-index: -1;
}

.ct-hero__inner {
  position: relative;
}

.ct-hero .crumbs {
  margin-bottom: 30px;
}

.ct-hero__lead {
  margin-top: 22px;
  max-width: 60ch;
  font-size: var(--step-2);
  color: rgba(255, 253, 247, 0.8);
}

.ct-hero__facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
}

.ct-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--gold);
  font-size: var(--step-1);
  color: rgba(255, 253, 247, 0.72);
}

.ct-hero__facts .mono {
  font-size: var(--step-3);
  color: var(--gold);
}

.ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

/* ---------- 三条渠道 ---------- */
.ct-channels {
  padding: 0 0 74px;
  background: var(--night);
}

.ct-channels__head {
  margin-bottom: 34px;
}

.ct-channels__intro {
  margin-top: 16px;
  max-width: 58ch;
  color: rgba(255, 253, 247, 0.72);
}

.ct-channels__grid {
  display: grid;
  gap: 20px;
}

.ct-channel {
  --ch: var(--teal);
  --ch-ink: var(--night);
  position: relative;
  padding: 24px 22px 26px;
  background: var(--white);
  color: var(--ink);
  border-top: 5px solid var(--ch);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
  filter: drop-shadow(0 10px 20px rgba(4, 10, 18, 0.34));
  transition: transform 220ms ease, filter 220ms ease;
}

.ct-channel--gold {
  --ch: var(--gold);
  --ch-ink: var(--night);
}

.ct-channel--red {
  --ch: var(--red);
  --ch-ink: var(--white);
}

.ct-channel:hover,
.ct-channel:focus-visible {
  transform: translateY(-6px);
  filter: drop-shadow(0 20px 32px rgba(4, 10, 18, 0.46));
}

.ct-channel:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

.ct-channel__tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  background: var(--ch);
  color: var(--ch-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  clip-path: polygon(0 0, 100% 0, 100% 68%, calc(100% - 8px) 100%, 0 100%);
}

.ct-channel__lead {
  margin-top: 12px;
  color: var(--slate);
  font-size: var(--step-2);
}

.ct-channel__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.ct-channel__list li {
  position: relative;
  padding-left: 20px;
  font-size: var(--step-2);
  line-height: 1.7;
}

.ct-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 2px;
  background: var(--ch);
}

.ct-channel__note {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-light);
  font-size: var(--step-1);
  color: var(--slate);
}

.ct-channel__note .mono {
  color: var(--ink);
  font-weight: 500;
  word-break: break-all;
}

/* ---------- 处理流程 ---------- */
.ct-flow {
  padding: 62px 0 78px;
  background: var(--paper);
  color: var(--ink);
  clip-path: polygon(0 2.4vw, 100% 0, 100% 100%, 0 100%);
}

.ct-flow__intro {
  margin-top: 16px;
  max-width: 60ch;
  color: var(--slate);
}

.ct-flow__list {
  list-style: none;
  margin: 46px 0 0;
  padding: 0;
  display: grid;
  gap: 34px;
  position: relative;
}

.ct-flow__step {
  position: relative;
  padding-top: 58px;
  outline: none;
}

.ct-flow__step:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

.ct-flow__no {
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--night);
  color: var(--gold);
  font-size: var(--step-2);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 66% 100%, 0 100%);
}

.ct-flow__step h3 {
  padding-bottom: 10px;
  border-bottom: 2px solid var(--night);
  display: inline-block;
  min-width: 84px;
}

.ct-flow__step p {
  margin-top: 12px;
  max-width: 42ch;
  color: #2c3a4a;
  font-size: var(--step-2);
}

/* ---------- 表单章节 ---------- */
.ct-form {
  padding: 0 0 82px;
  background: var(--paper);
  color: var(--ink);
}

.ct-form__grid {
  display: grid;
  gap: 40px;
}

.ct-form__intro {
  margin-top: 16px;
  max-width: 52ch;
  color: var(--slate);
}

.ct-fields {
  margin-top: 28px;
  background: var(--white);
  padding: 4px 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut-lg)), calc(100% - var(--ct-cut-lg)) 100%, 0 100%);
  filter: drop-shadow(0 8px 18px rgba(4, 10, 18, 0.14));
}

.ct-field {
  border-bottom: 1px solid var(--line-light);
}

.ct-field:last-child {
  border-bottom: none;
}

.ct-field summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: var(--step-2);
  font-weight: 700;
}

.ct-field summary::-webkit-details-marker {
  display: none;
}

.ct-field summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--step-3);
  color: var(--teal-deep);
  line-height: 1;
}

.ct-field[open] summary::after {
  content: "−";
}

.ct-field[open] summary {
  color: var(--teal-deep);
}

.ct-field__no {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: none;
  background: var(--night);
  color: var(--paper);
  font-size: 13px;
}

.ct-field__hint {
  padding: 0 0 18px 44px;
  font-size: var(--step-2);
  color: var(--slate);
  max-width: 56ch;
}

.ct-form__aside {
  display: grid;
  gap: 26px;
  align-content: start;
}

.ct-form__tips {
  padding: 24px 22px 26px;
  background: var(--night);
  color: var(--white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.ct-form__tips h3 {
  font-size: var(--step-3);
  color: var(--gold);
}

.ct-form__tips ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.ct-form__tips li {
  position: relative;
  padding-left: 18px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: rgba(255, 253, 247, 0.84);
}

.ct-form__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--teal);
  transform: rotate(45deg);
}

.ct-form__tips p {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-size: var(--step-2);
  color: rgba(255, 253, 247, 0.74);
}

.page-contact a {
  color: var(--teal-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ct-form__tips a,
.ct-partners a {
  color: var(--teal);
}

.page-contact a:hover {
  color: var(--gold);
}

.page-contact a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- 客服邮箱与电话 ---------- */
.ct-reach {
  padding: 62px 0 66px;
  background: var(--ink);
  color: var(--white);
}

.ct-reach__grid {
  display: grid;
  gap: 20px;
  margin-top: 34px;
}

.ct-reach__card {
  padding: 26px 22px 28px;
  background: rgba(243, 233, 214, 0.05);
  border-left: 5px solid var(--gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.ct-reach__card--phone {
  border-left-color: var(--red);
}

.ct-reach__value {
  margin-top: 14px;
  font-size: clamp(19px, 4.4vw, var(--step-4));
  color: var(--white);
  word-break: break-all;
}

.ct-reach__card--phone .ct-reach__value {
  color: var(--gold);
}

.ct-reach__body {
  margin-top: 16px;
  max-width: 48ch;
  color: rgba(255, 253, 247, 0.78);
}

.ct-reach__meta {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-dark);
  font-size: var(--step-1);
  color: rgba(255, 253, 247, 0.6);
}

/* ---------- 响应节奏 ---------- */
.ct-timing {
  padding: 6px 0 84px;
  background: var(--ink);
  color: var(--white);
}

.ct-timing__grid {
  display: grid;
  gap: 36px;
}

.ct-timing__main p {
  margin-top: 16px;
  max-width: 58ch;
  color: rgba(255, 253, 247, 0.76);
}

.ct-timing__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.ct-timing__points li {
  padding: 20px 20px 22px;
  background: linear-gradient(140deg, rgba(127, 182, 217, 0.14), rgba(127, 182, 217, 0.03));
  border-top: 3px solid var(--sky);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.ct-timing__points h3 {
  font-size: var(--step-2);
  color: var(--sky);
}

.ct-timing__points p {
  margin-top: 10px;
  font-size: var(--step-2);
  color: rgba(255, 253, 247, 0.76);
}

/* ---------- 通信地址 ---------- */
.ct-address {
  padding: 66px 0 78px;
  background: var(--paper);
  color: var(--ink);
}

.ct-address__grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.ct-address__label {
  margin-top: 26px;
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  color: var(--slate);
}

.ct-address__value {
  margin-top: 8px;
  font-size: clamp(21px, 4.6vw, var(--step-4));
  font-weight: 800;
  line-height: 1.4;
  padding-left: 16px;
  border-left: 4px solid var(--red);
}

.ct-address__col p + p {
  margin-top: 18px;
}

.ct-address__col p {
  max-width: 56ch;
  color: #2c3a4a;
}

.ct-address__col .mono {
  color: var(--ink);
  font-weight: 500;
}

.ct-address__figure {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut-lg)), calc(100% - var(--ct-cut-lg)) 100%, 0 100%);
}

/* ---------- 合作与媒体 ---------- */
.ct-partners {
  padding: 66px 0 88px;
  background: linear-gradient(190deg, var(--night) 0%, #0d2036 62%, var(--ink) 100%);
  color: var(--white);
}

.ct-partners__intro {
  margin-top: 18px;
  max-width: 62ch;
  color: rgba(255, 253, 247, 0.74);
}

.ct-partners__grid {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.ct-partners__item {
  padding: 22px 20px 24px;
  background: rgba(255, 253, 247, 0.05);
  border-bottom: 3px solid var(--teal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.ct-partners__item:nth-child(2) {
  border-bottom-color: var(--gold);
}

.ct-partners__item:nth-child(3) {
  border-bottom-color: var(--red);
}

.ct-partners__item p {
  margin-top: 12px;
  font-size: var(--step-2);
  color: rgba(255, 253, 247, 0.76);
}

.ct-partners__flow {
  margin-top: 32px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
  max-width: 70ch;
  color: rgba(255, 253, 247, 0.78);
}

.ct-partners__flow .mono {
  color: var(--gold);
  word-break: break-all;
}

/* ---------- 图片 ---------- */
.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .ct-hero {
    padding: 46px 0 96px;
  }

  .ct-channels__grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }

  .ct-channel:nth-child(2) {
    margin-top: 40px;
  }

  .ct-channel:nth-child(3) {
    margin-top: 80px;
  }

  .ct-flow__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 56px;
  }

  .ct-flow__list::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 22px;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--slate) 0 12px, transparent 12px 22px);
    opacity: 0.45;
  }

  .ct-flow__no {
    z-index: 1;
  }

  .ct-reach__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ct-timing__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .ct-form__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .ct-address__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .ct-partners__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .ct-hero {
    padding: 54px 0 112px;
  }

  .ct-hero__lead {
    font-size: var(--step-3);
  }

  .ct-channels {
    padding-bottom: 96px;
  }

  .ct-flow {
    padding: 76px 0 92px;
  }

  .ct-form {
    padding-bottom: 100px;
  }

  .ct-reach__card {
    padding: 32px 30px 34px;
  }

  .ct-partners__item {
    padding: 26px 24px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ct-channel,
  .ct-channel:hover,
  .ct-channel:focus-visible {
    transition: none;
    transform: none;
  }
}