.page-contact {
  position: relative;
  background: var(--ink-900);
  color: var(--white);
  font-family: var(--font-body);
  padding-bottom: clamp(72px, 10vw, 140px);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 52px) 0 clamp(44px, 6.5vw, 80px);
  background:
    radial-gradient(900px 460px at 88% -14%, var(--cyan-08), transparent 62%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -170px;
  top: 30px;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  border: 1px solid var(--line);
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(46%, 520px);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  pointer-events: none;
}

.page-contact .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

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

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

.page-contact .contact-hero .eyebrow {
  position: relative;
  z-index: 1;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-hero__title {
  position: relative;
  z-index: 1;
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 7.4vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero__lead {
  position: relative;
  z-index: 1;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 64ch;
}

.page-contact .hero-meta {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .hero-meta__item {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--ink-800);
  font-size: 13px;
  line-height: 1.4;
  color: var(--mist);
}

/* 章节头 */
.page-contact .sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: clamp(24px, 4vw, 46px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .sec-head__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .sec-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .sec-head__body .lead {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-16);
  transition: border-color var(--t-fast) var(--ease);
}

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

/* 直接联系 */
.page-contact .band {
  padding: clamp(44px, 6.5vw, 88px) 0 0;
}

.page-contact .band-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .band-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-contact .band-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(20px, 2.6vw, 30px);
  width: 34px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .band-card:hover,
.page-contact .band-card:focus-within {
  border-color: var(--cyan-16);
  transform: translateY(-4px);
}

.page-contact .band-card__icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--cyan-08);
  color: var(--cyan);
}

.page-contact .band-card__label {
  margin: 4px 0 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .band-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(16px, 2.1vw, 21px);
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  user-select: all;
  overflow-wrap: anywhere;
}

.page-contact .band-card__value--pill {
  display: inline-block;
  align-self: flex-start;
  padding: 8px 16px;
  border: 1px solid var(--cyan);
  border-radius: var(--r-pill);
  background: var(--cyan-08);
  color: var(--cyan);
  font-size: clamp(14px, 1.9vw, 17px);
}

.page-contact .band-card__note {
  margin: auto 0 0;
  padding-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* 图文区块 */
.page-contact .contact-figure {
  margin: clamp(28px, 4.4vw, 52px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-contact .contact-figure__cap {
  padding: 16px clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 通用章节节距 */
.page-contact .panel-sec {
  padding: clamp(56px, 9vw, 116px) 0 0;
}

/* 数据疑问 */
.page-contact .feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

.page-contact .checkline {
  position: relative;
  padding: 15px 18px 15px 50px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-contact .checkline:hover {
  border-color: var(--cyan-16);
}

.page-contact .checkline__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.page-contact .checkline__box {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--ink-700);
  z-index: 1;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .checkline__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(40deg) scale(0);
  transition: transform var(--t-fast) var(--ease);
}

.page-contact .checkline__input:checked ~ .checkline__box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .checkline__input:checked ~ .checkline__box::after {
  transform: rotate(40deg) scale(1);
}

.page-contact .checkline__input:focus-visible ~ .checkline__box {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .checkline__text {
  display: block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
}

.page-contact .checklist-wrap .note {
  margin: 14px 0 0;
}

.page-contact .feedback-side {
  padding: clamp(22px, 3vw, 32px);
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-700) 100%);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.page-contact .feedback-side__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .mini-steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  counter-reset: mini;
  display: grid;
  gap: 14px;
}

.page-contact .mini-steps li {
  position: relative;
  counter-increment: mini;
  padding-left: 40px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .mini-steps li::before {
  content: counter(mini, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--amber);
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  padding: 2px 6px;
  font-variant-numeric: tabular-nums;
}

/* 媒体引用 */
.page-contact .press-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .press-card {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--t) var(--ease);
}

.page-contact .press-card:hover {
  border-color: var(--cyan-16);
}

.page-contact .press-card__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .press-card p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-contact .press-card__sample {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  background: var(--cyan-08);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
  padding: 10px 14px;
}

/* 接口与嵌入 */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .coop-card {
  position: relative;
  padding: clamp(24px, 3.2vw, 38px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-contact .coop-card::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid var(--line);
  pointer-events: none;
}

.page-contact .coop-card__tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  background: var(--amber-14);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  font-weight: 700;
}

.page-contact .coop-card__title {
  margin: 16px 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(18px, 2.3vw, 23px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .coop-card p {
  margin: 0 0 18px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-contact .coop-card__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
}

.page-contact .coop-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

/* 合作节奏 */
.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .flow__step {
  position: relative;
  padding: 26px 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  border-color: var(--cyan-16);
  transform: translateY(-3px);
}

.page-contact .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.page-contact .flow__title {
  margin: 14px 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .flow__more {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* 收尾 */
.page-contact .closing {
  padding: clamp(56px, 8vw, 110px) 0 0;
}

.page-contact .closing__inner {
  padding: clamp(28px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(620px 300px at 12% 0%, var(--cyan-08), transparent 70%),
    var(--ink-800);
}

.page-contact .closing__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .closing__text {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .closing__line {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
  user-select: all;
}

/* 移动端优先：断点 */
@media (min-width: 720px) {
  .page-contact .band-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (min-width: 760px) {
  .page-contact .sec-head {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .feedback-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 860px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 28px;
  }

  .page-contact .flow__step::after {
    content: "";
    position: absolute;
    right: -28px;
    top: 40px;
    width: 28px;
    height: 1px;
    background: var(--line);
  }

  .page-contact .flow__step:last-child::after {
    display: none;
  }
}

@media (min-width: 860px) and (hover: hover) {
  .page-contact .flow__more {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height var(--t) var(--ease), opacity var(--t) var(--ease), margin var(--t) var(--ease);
  }

  .page-contact .flow__step:hover .flow__more,
  .page-contact .flow__step:focus-within .flow__more,
  .page-contact .flow__step:focus .flow__more {
    max-height: 160px;
    margin-top: 10px;
    opacity: 1;
  }
}

@media (min-width: 1440px) {
  .page-contact::before {
    content: "";
    position: absolute;
    top: 0;
    right: 22px;
    width: 1px;
    height: 100%;
    background: linear-gradient(180deg, transparent, var(--line) 10%, var(--line) 82%, transparent);
    pointer-events: none;
  }

  .page-contact::after {
    content: "";
    position: absolute;
    top: clamp(200px, 18vw, 300px);
    right: 18px;
    width: 9px;
    height: 130px;
    background: repeating-linear-gradient(180deg, var(--cyan) 0 2px, transparent 2px 12px);
    opacity: 0.45;
    pointer-events: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .band-card,
  .page-contact .flow__step,
  .page-contact .press-card,
  .page-contact .checkline {
    transition: none;
  }
}
</final>