.page-contact {
  --c-band-y: clamp(2.5rem, 7vw, 5rem);
  --c-gap: clamp(1rem, 2.5vw, 1.75rem);
  --c-ink-soft: rgba(11, 27, 51, 0.76);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact .c-h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.75rem, 4.8vw, 2.75rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: inherit;
}

.page-contact .c-h2--sm {
  font-size: clamp(1.45rem, 3.6vw, 2rem);
}

.page-contact .c-section {
  padding-block: var(--c-band-y);
}

/* 首屏 */
.page-contact .c-hero {
  padding-block: clamp(1.25rem, 4vw, 2.25rem) var(--c-band-y);
}

.page-contact .c-hero__grid {
  display: grid;
  gap: var(--c-gap);
}

.page-contact .c-hero__side {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  background:
    radial-gradient(120% 80% at 12% 0%, rgba(53, 214, 200, 0.16), transparent 62%),
    radial-gradient(90% 70% at 100% 100%, rgba(255, 106, 42, 0.15), transparent 66%),
    linear-gradient(165deg, var(--ink-2), var(--ink-3) 80%);
  overflow: hidden;
}

.page-contact .c-hero__side::after {
  content: "";
  position: absolute;
  inset: auto -30% -55% 20%;
  height: 60%;
  background: repeating-linear-gradient(115deg, rgba(201, 211, 223, 0.06) 0 2px, transparent 2px 14px);
  pointer-events: none;
}

.page-contact .c-hero__side > * {
  position: relative;
  z-index: 1;
}

.page-contact .c-hero__side h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.3rem, 7.4vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .c-hero__lead {
  margin: 0;
  font-size: clamp(0.95rem, 2.4vw, 1.0625rem);
  line-height: 1.75;
  color: var(--cloud);
  max-width: 46ch;
}

.page-contact .c-channels {
  display: grid;
  gap: 1.1rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.page-contact .c-channel {
  display: grid;
  gap: 0.32rem;
  padding-top: 0.9rem;
  border-top: 2px solid var(--line);
}

.page-contact .c-channel__label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .c-channel__value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.8vw, 1.4rem);
  line-height: 1.3;
  color: var(--teal);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .c-channel__value--tel {
  font-size: clamp(1.5rem, 6vw, 2.3rem);
  letter-spacing: 0.01em;
  color: var(--amber);
}

.page-contact .c-channel__note {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--cloud);
}

.page-contact .c-hero__main {
  display: grid;
  gap: clamp(0.9rem, 2.4vw, 1.4rem);
  align-content: start;
  padding: clamp(1.1rem, 3vw, 1.75rem);
  background: var(--mist);
  color: var(--ink);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-contact .c-shot {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--ink-2);
  overflow: hidden;
}

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

.page-contact .c-shot figcaption {
  padding: 0.5rem 0.75rem;
  background: var(--ink);
  color: var(--cloud);
  font-size: 0.75rem;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.page-contact .c-intent {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-contact .c-intent li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  padding-top: 0.7rem;
  border-top: 1px solid rgba(11, 27, 51, 0.18);
}

.page-contact .c-intent__n {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  padding-top: 0.2rem;
}

.page-contact .c-intent strong {
  display: block;
  margin-bottom: 0.15rem;
  font-size: 0.95rem;
  color: var(--ink);
}

.page-contact .c-intent p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-ink-soft);
}

/* 服务时段 */
.page-contact .c-hours {
  padding-block: var(--c-band-y);
  background:
    linear-gradient(180deg, rgba(18, 41, 74, 0.95), rgba(8, 21, 42, 0.98));
  border-block: 2px solid var(--line);
}

.page-contact .c-hours__lead {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  max-width: 62ch;
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--cloud);
}

.page-contact .c-scale {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .c-scale__bar {
  position: relative;
  height: 16px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, rgba(201, 211, 223, 0.22) 0 1px, transparent 1px calc(100% / 9));
  overflow: hidden;
}

.page-contact .c-scale__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--orange), var(--amber));
  transform-origin: left center;
}

.page-contact .c-scale__ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--grass);
}

.page-contact .c-hours__tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-contact .c-hours__tips li {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--line);
  background: rgba(11, 27, 51, 0.55);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .c-hours__tips li:hover,
.page-contact .c-hours__tips li:focus-within {
  border-left-color: var(--orange);
  background: rgba(18, 41, 74, 0.92);
  transform: translateX(4px);
}

.page-contact .c-hours__tips strong {
  font-size: 0.9375rem;
  color: var(--paper);
}

.page-contact .c-hours__tips span {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--cloud);
}

/* 合作类型 */
.page-contact .c-collab__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-contact .c-collab__lead {
  margin: 0 0 clamp(1rem, 2.5vw, 1.5rem);
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--cloud);
  max-width: 52ch;
}

.page-contact .c-collab__intro .c-shot {
  border-color: var(--line);
  margin-top: 0.25rem;
}

.page-contact .c-collab__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
  align-content: start;
}

.page-contact .c-collab__item {
  border: 2px solid var(--line);
  border-left-width: 6px;
  background: var(--ink-3);
  transition: box-shadow var(--dur) var(--ease);
}

.page-contact .c-collab__item:hover {
  box-shadow: var(--shadow-soft);
}

.page-contact .c-collab__item:nth-child(1) { border-left-color: var(--orange); }
.page-contact .c-collab__item:nth-child(2) { border-left-color: var(--teal); }
.page-contact .c-collab__item:nth-child(3) { border-left-color: var(--amber); }
.page-contact .c-collab__item:nth-child(4) { border-left-color: var(--grass); }

.page-contact .c-collab__item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .c-collab__item summary::marker {
  content: "";
}

.page-contact .c-collab__item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--teal);
  line-height: 1;
}

.page-contact .c-collab__item[open] summary::after {
  content: "–";
  color: var(--orange);
}

.page-contact .c-collab__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--cloud);
}

.page-contact .c-collab__title strong {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--paper);
}

.page-contact .c-collab__title em {
  display: block;
  margin-top: 0.2rem;
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--grass);
}

.page-contact .c-collab__body {
  padding: 0 1rem 1.1rem;
  border-top: 1px solid var(--line-soft);
  margin-top: 0.1rem;
}

.page-contact .c-collab__body p {
  margin: 0.85rem 0 0.6rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--cloud);
}

.page-contact .c-collab__body ul {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.4rem;
}

.page-contact .c-collab__body li {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--paper);
  opacity: 0.86;
}

.page-contact .c-collab__body li::marker {
  color: var(--teal);
}

/* 咨询前准备（浅色带） */
.page-contact .c-band {
  padding-block: var(--c-band-y);
  background: var(--mist);
  color: var(--ink);
  border-block: 2px solid var(--line);
}

.page-contact .eyebrow--dark {
  color: var(--orange);
}

.page-contact .c-prep__lead {
  margin: 0 0 clamp(1.25rem, 3vw, 1.9rem);
  max-width: 60ch;
  font-size: 0.975rem;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-contact .c-prep {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .c-prep li {
  padding: 0.9rem 1rem;
  background: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 0 rgba(5, 11, 20, 0.85);
}

.page-contact .c-prep__k {
  display: inline-block;
  margin-bottom: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-contact .c-prep p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-ink-soft);
}

/* 响应节奏 */
.page-contact .c-cadence__track {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-contact .c-cadence__track li {
  padding-top: 0.85rem;
  border-top: 3px solid var(--orange);
}

.page-contact .c-cadence__track li:nth-child(2) { border-top-color: var(--teal); }
.page-contact .c-cadence__track li:nth-child(3) { border-top-color: var(--amber); }

.page-contact .c-cadence__step {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--cloud);
  margin-bottom: 0.4rem;
}

.page-contact .c-cadence__track h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.15rem, 3vw, 1.4rem);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .c-cadence__track p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--cloud);
}

/* 地址与备案 */
.page-contact .c-addr {
  padding-bottom: clamp(3rem, 8vw, 5.5rem);
}

.page-contact .c-addr__card {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 3px solid var(--line);
  box-shadow: var(--shadow-hard);
  background:
    radial-gradient(100% 80% at 100% 0%, rgba(255, 106, 42, 0.15), transparent 60%),
    linear-gradient(150deg, var(--ink-2), var(--ink-3));
}

.page-contact .c-addr__card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 54px;
  height: 54px;
  background: var(--orange);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.page-contact .c-addr__body {
  display: grid;
  gap: 0.45rem;
  margin: 0.4rem 0 1rem;
  font-style: normal;
}

.page-contact .c-addr__line {
  font-size: clamp(0.95rem, 2.4vw, 1.1rem);
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .c-addr__line--mono {
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 2.6vw, 1.05rem);
  color: var(--teal);
}

.page-contact .c-addr__note {
  margin: 0 0 1.1rem;
  max-width: 58ch;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--cloud);
}

.page-contact .c-addr__icp {
  margin: 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--grass);
}

/* 响应式 */
@media (min-width: 620px) {
  .page-contact .c-prep {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .c-cadence__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.04fr);
    align-items: stretch;
  }

  .page-contact .c-collab__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

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

  .page-contact .c-addr__body {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-hours__tips li {
    transition: none;
    transform: none;
  }
}