.page-contact {
  --cc-cut: 18px;
  --cc-cut-sm: 8px;
  --cc-line: 1px solid var(--ink-700);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(26px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 32px;
}

.page-contact .contact-hero__copy {
  min-width: 0;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-soft);
}

.page-contact .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-contact .breadcrumb__sep {
  color: var(--ink-600);
}

.page-contact .contact-hero .section-head__eyebrow {
  margin-top: 22px;
}

.page-contact .contact-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__quick li {
  padding: 7px 13px 6px;
  border: var(--cc-line);
  background: var(--ink-800);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(var(--cc-cut) 0, 100% 0, 100% calc(100% - var(--cc-cut)), calc(100% - var(--cc-cut)) 100%, 0 100%, 0 var(--cc-cut));
}

.page-contact .contact-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-hero__media .media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 18px 12px;
  background: linear-gradient(to top, rgba(8, 21, 15, 0.92), rgba(8, 21, 15, 0));
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* ---------- 找到我们 ---------- */
.page-contact .reach {
  padding: clamp(6px, 2vw, 18px) 0 clamp(40px, 6vw, 72px);
}

.page-contact .reach .section-head__eyebrow {
  margin-top: 0;
}

.page-contact .channels {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .channel {
  min-width: 0;
}

.page-contact .channel__inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  padding: 24px 22px 26px;
}

.page-contact .channel__icon {
  display: block;
  width: 34px;
  height: 34px;
  color: var(--cyan);
}

.page-contact .channel__icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-contact .channel__label {
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-soft);
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(16px, 2.1vw, 20px);
  line-height: 1.4;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .channel__more {
  margin-top: auto;
  padding-top: 6px;
}

.page-contact .channel__more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  border-bottom: 1px dashed rgba(22, 227, 201, 0.4);
  padding-bottom: 2px;
}

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

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

.page-contact .channel__more-text {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .region {
  position: relative;
  margin-top: 34px;
  overflow: hidden;
  border: var(--cc-line);
  clip-path: polygon(var(--cc-cut) 0, 100% 0, 100% calc(100% - var(--cc-cut)), calc(100% - var(--cc-cut)) 100%, 0 100%, 0 var(--cc-cut));
}

.page-contact .region__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  opacity: 0.72;
}

.page-contact .region__bar {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: linear-gradient(to top, rgba(8, 21, 15, 0.95) 40%, rgba(8, 21, 15, 0));
}

.page-contact .region__dot {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(22, 227, 201, 0.16);
}

.page-contact .region__text {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text);
}

/* ---------- 写信之前 ---------- */
.page-contact .prep {
  padding: clamp(8px, 2vw, 20px) 0 clamp(44px, 6vw, 76px);
}

.page-contact .prep .section-head__eyebrow {
  margin-top: 0;
}

.page-contact .prep__grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-contact .prep-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px 24px;
  border: var(--cc-line);
  background: var(--ink-800);
  text-decoration: none;
  color: inherit;
  clip-path: polygon(var(--cc-cut) 0, 100% 0, 100% calc(100% - var(--cc-cut)), calc(100% - var(--cc-cut)) 100%, 0 100%, 0 var(--cc-cut));
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.page-contact .prep-card:hover,
.page-contact .prep-card:focus-visible {
  background: var(--ink-700);
  border-color: var(--cyan-deep);
}

.page-contact .prep-card__num {
  font-size: 26px;
  line-height: 1;
  color: var(--cyan-deep);
}

.page-contact .prep-card__title {
  margin: 0;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .prep-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .prep-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 合作方向色带 ---------- */
.page-contact .coop {
  margin: clamp(8px, 2vw, 20px) 0 clamp(44px, 6vw, 76px);
}

.page-contact .coop__band {
  padding: clamp(32px, 5vw, 60px) 0;
  border-top: 1px solid rgba(22, 227, 201, 0.28);
  border-bottom: 1px solid rgba(255, 176, 32, 0.28);
  background:
    linear-gradient(104deg, rgba(22, 227, 201, 0.13) 0%, rgba(12, 127, 114, 0.10) 38%, rgba(255, 176, 32, 0.10) 74%, rgba(255, 90, 43, 0.09) 100%);
}

.page-contact .coop__head {
  max-width: 62ch;
}

.page-contact .coop__head .section-head__eyebrow {
  margin-top: 0;
}

.page-contact .coop__grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-contact .coop-item {
  padding: 22px 22px 24px;
  border-left: 3px solid var(--cyan);
  background: rgba(14, 36, 28, 0.72);
}

.page-contact .coop-item:nth-child(2) {
  border-left-color: var(--amber);
}

.page-contact .coop-item:nth-child(3) {
  border-left-color: var(--alert);
}

.page-contact .coop-item__tag {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--text-soft);
}

.page-contact .coop-item__title {
  margin: 10px 0 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .coop-item__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 响应节奏 ---------- */
.page-contact .rhythm {
  padding: clamp(4px, 1vw, 12px) 0 clamp(48px, 7vw, 84px);
}

.page-contact .rhythm__inner {
  display: grid;
  gap: 30px;
}

.page-contact .rhythm__aside .section-head__eyebrow {
  margin-top: 0;
}

.page-contact .rhythm__title {
  margin: 12px 0 0;
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .rhythm__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-contact .rhythm__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-contact .rhythm__step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  padding: 20px 0;
  border-top: var(--cc-line);
  align-items: start;
}

.page-contact .rhythm__step:last-child {
  border-bottom: var(--cc-line);
}

.page-contact .rhythm__mark {
  font-size: 22px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-contact .rhythm__step-title {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.5;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .rhythm__step-text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 订阅 ---------- */
.page-contact .subscribe {
  padding-bottom: clamp(12px, 3vw, 28px);
}

.page-contact .sub-panel {
  display: grid;
  gap: 26px;
  padding: clamp(26px, 4.4vw, 46px);
  background: var(--paper);
  color: var(--ink-900);
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.page-contact .sub-panel__eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan-deep);
}

.page-contact .sub-panel__title {
  margin: 12px 0 0;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-contact .sub-panel__text {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: #2F4A40;
}

.page-contact .sub-panel__field {
  min-width: 0;
}

.page-contact .sub-panel__label {
  display: block;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: #436156;
}

.page-contact .sub-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.page-contact .sub-input {
  flex: 1 1 200px;
  min-width: 0;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink-900);
  background: #FFFFFF;
  border: 1px solid #BED3CB;
  clip-path: polygon(var(--cc-cut-sm) 0, 100% 0, 100% calc(100% - var(--cc-cut-sm)), calc(100% - var(--cc-cut-sm)) 100%, 0 100%, 0 var(--cc-cut-sm));
  transition: border-color var(--dur-fast) var(--ease);
}

.page-contact .sub-input::placeholder {
  color: #7C948B;
}

.page-contact .sub-input:focus,
.page-contact .sub-input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
  border-color: var(--cyan-deep);
}

.page-contact .sub-btn {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  font-size: 14px;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--ink-900);
  background: var(--cyan);
  cursor: pointer;
  clip-path: polygon(var(--cc-cut-sm) 0, 100% 0, 100% calc(100% - var(--cc-cut-sm)), calc(100% - var(--cc-cut-sm)) 100%, 0 100%, 0 var(--cc-cut-sm));
  transition: background var(--dur-fast) var(--ease);
}

.page-contact .sub-btn:hover {
  background: var(--cyan-bright);
}

.page-contact .sub-hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #5A7268;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channels .channel:last-child {
    grid-column: 1 / -1;
  }

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

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

  .page-contact .coop__grid .coop-item:last-child {
    grid-column: 1 / -1;
  }

  .page-contact .sub-panel {
    grid-template-columns: 2fr 3fr;
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-contact .channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .channels .channel:last-child {
    grid-column: auto;
  }

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

  .page-contact .coop__grid .coop-item:last-child {
    grid-column: auto;
  }

  .page-contact .rhythm__inner {
    grid-template-columns: 2fr 3fr;
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .rhythm__aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal],
  .page-contact .prep-card,
  .page-contact .sub-input,
  .page-contact .sub-btn {
    transition: none;
    transform: none;
  }
}