.page-contact {
  background: var(--ink-green);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

/* ---------- 首屏分屏联系台 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(0.75rem, 2.5vw, 1.5rem);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--rule);
  margin-top: clamp(1rem, 3vw, 1.75rem);
}

.page-contact .contact-hero__panel {
  position: relative;
  padding: clamp(1.75rem, 4.5vw, 3.25rem) clamp(1rem, 3.5vw, 2.75rem) clamp(1.75rem, 4vw, 3rem);
  background:
    radial-gradient(130% 80% at 0% 0%, rgba(18, 58, 48, 0.9), transparent 62%),
    var(--ink-green);
  overflow: hidden;
}

.page-contact .contact-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 13px);
  opacity: 0.85;
  pointer-events: none;
}

.page-contact .contact-hero__art {
  display: block;
  width: 100%;
  height: clamp(84px, 17vw, 132px);
  object-fit: cover;
  opacity: 0.5;
  margin-bottom: clamp(1.1rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--rule);
}

.page-contact h1 {
  margin: 0;
  font-size: clamp(1.95rem, 5.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lead {
  margin: clamp(0.9rem, 2.5vw, 1.35rem) 0 0;
  max-width: 40ch;
  font-size: clamp(0.95rem, 2.2vw, 1.0625rem);
  line-height: 1.75;
  color: var(--mint);
}

/* 联系渠道行 */
.page-contact .channels {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
}

.page-contact .channels__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  padding-block: 1.05rem;
  border-top: 1px solid var(--rule);
}

.page-contact .channels__row:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-contact .channels__icon {
  color: var(--slate);
  line-height: 0;
  padding-top: 0.2rem;
}

.page-contact .channels__row--mail .channels__icon {
  color: var(--lime);
}

.page-contact .channels__icon--amber {
  color: var(--amber);
}

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

.page-contact .channels__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .channels__value {
  margin: 0.3rem 0 0;
  font-size: clamp(1rem, 2.4vw, 1.125rem);
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channels__value--mono {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.9vw, 1.5rem);
  letter-spacing: -0.01em;
  color: var(--lime);
}

.page-contact .channels__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .channels__value a:hover,
.page-contact .channels__value a:focus-visible {
  border-bottom-color: currentColor;
}

.page-contact .channels__note {
  margin: 0.4rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mint);
}

.page-contact .channels__cta {
  display: inline-block;
  margin-top: 0.85rem;
  text-decoration: none;
}

/* ---------- 右侧浅纸准备清单 ---------- */
.page-contact .prep {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(1.5rem, 4.5vw, 3rem) clamp(1rem, 3.5vw, 2.75rem);
  position: relative;
}

.page-contact .prep::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, rgba(6, 18, 14, 0.28) 0 1px, transparent 1px 11px);
  pointer-events: none;
}

.page-contact .prep__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-contact .prep h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-contact .prep__intro {
  margin: 0.7rem 0 0;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(6, 18, 14, 0.78);
}

.page-contact .prep__list {
  list-style: none;
  margin: clamp(1rem, 3vw, 1.6rem) 0 0;
  padding: 0;
}

.page-contact .prep__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: start;
  padding-block: 0.8rem;
  border-top: 1px solid rgba(6, 18, 14, 0.16);
}

.page-contact .prep__item:last-child {
  border-bottom: 1px solid rgba(6, 18, 14, 0.16);
}

.page-contact .prep__box {
  width: 20px;
  height: 20px;
  margin: 0.15rem 0 0;
  accent-color: var(--ink-green);
  cursor: pointer;
}

.page-contact .prep__label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: start;
  cursor: pointer;
}

.page-contact .prep__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.12rem 0.4rem;
  border: 1px solid rgba(6, 18, 14, 0.28);
  border-radius: 2px;
  color: var(--ink);
  background: transparent;
  transition: background-color 140ms ease, color 140ms ease;
}

.page-contact .prep__box:checked + .prep__label .prep__num {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-contact .prep__box:focus-visible + .prep__label {
  outline: 2px solid var(--field-green);
  outline-offset: 3px;
}

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

.page-contact .prep__text strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-contact .prep__hint {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(6, 18, 14, 0.66);
}

.page-contact .prep__figure {
  margin: clamp(1.25rem, 3.5vw, 2rem) 0 0;
}

.page-contact .prep__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(6, 18, 14, 0.18);
  object-fit: cover;
}

/* ---------- 四步流程 ---------- */
.page-contact .flow {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  background: var(--field-green);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-contact .flow__head {
  display: grid;
  gap: 0.9rem;
}

.page-contact .flow h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .flow__entry {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mint);
  max-width: 62ch;
}

.page-contact .flow__entry .tag {
  margin-right: 0.5rem;
  vertical-align: 0.06em;
}

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

.page-contact .flow__steps {
  list-style: none;
  margin: clamp(1.25rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  counter-reset: none;
}

.page-contact .flow__step {
  background: var(--ink-green);
  padding: 1.15rem 1rem 2.1rem;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 16px));
  transition: background-color 180ms ease;
}

.page-contact .flow__step:hover {
  background: #0d2a23;
}

.page-contact .flow__step h3 {
  margin: 0.45rem 0 0;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-contact .flow__step p {
  margin: 0.55rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mint);
}

.page-contact .flow__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem !important;
  letter-spacing: 0.06em;
  color: var(--amber) !important;
  border-top: 1px solid var(--rule);
  padding-top: 0.55rem;
  margin-top: 0.85rem !important;
}

/* ---------- 合作与内容协作 ---------- */
.page-contact .coop {
  padding-block: clamp(2.25rem, 5.5vw, 4rem) clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .coop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-contact .coop__main h2 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .coop__main p {
  margin: 0.85rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mint);
  max-width: 56ch;
}

.page-contact .coop__main .btn {
  margin-top: 1.35rem;
  text-decoration: none;
  display: inline-block;
}

.page-contact .coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.page-contact .coop__list li {
  position: relative;
  padding: 0.85rem 0 0.85rem 0.95rem;
  border-left: 2px solid var(--amber);
  background: linear-gradient(90deg, rgba(18, 58, 48, 0.85), transparent 92%);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .coop__list .tag {
  display: inline-block;
  margin-right: 0.45rem;
}

.page-contact .coop__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-contact .coop__stat {
  margin: 0;
  background: var(--ink-green);
  padding: 1rem 0.9rem 1.1rem;
}

.page-contact .coop__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-contact .coop__stat-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--mint);
}

/* ---------- 常见联系场景 ---------- */
.page-contact .cases {
  padding-block: clamp(1.75rem, 4.5vw, 3rem) clamp(2rem, 5vw, 3.5rem);
}

.page-contact .cases h2 {
  margin: 0 0 clamp(0.75rem, 2vw, 1.25rem);
  font-size: clamp(1.4rem, 3.8vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .cases__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .cases__row {
  display: grid;
  gap: 0.35rem;
  padding-block: 1rem;
  border-top: 1px solid var(--rule);
}

.page-contact .cases__row:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-contact .cases__name {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-contact .cases__need {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mint);
}

.page-contact .cases__link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 163, 60, 0.45);
  padding-bottom: 2px;
}

.page-contact .cases__link:hover,
.page-contact .cases__link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 结尾入口 ---------- */
.page-contact .outro {
  background: var(--field-green);
  border-top: 1px solid var(--rule);
  padding-block: clamp(2rem, 5vw, 3.25rem);
}

.page-contact .outro h2 {
  margin: 0;
  font-size: clamp(1.4rem, 3.8vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .outro__lead {
  margin: 0.7rem 0 0;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mint);
}

.page-contact .outro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: clamp(1.25rem, 3.5vw, 2rem);
}

.page-contact .outro__card {
  display: block;
  padding: 1.1rem 1rem 1.25rem;
  background: var(--ink-green);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), 0 100%);
  text-decoration: none;
  border-left: 2px solid var(--rule);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-contact .outro__card:hover,
.page-contact .outro__card:focus-visible {
  border-left-color: var(--lime);
  background: #0d2a23;
}

.page-contact .outro__title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .outro__desc {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--mint);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-contact .coop__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 780px) {
  .page-contact .flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-contact .cases__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.75fr) auto;
    gap: 1.5rem;
    align-items: baseline;
    padding-block: 1.15rem;
  }

  .page-contact .cases__link {
    justify-self: end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 42fr 58fr;
  }

  .page-contact .contact-hero__panel {
    border-right: 1px solid var(--rule);
  }

  .page-contact .coop__grid {
    grid-template-columns: 1.65fr 1fr;
    align-items: start;
  }

  .page-contact .flow__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: end;
    gap: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .flow__step,
  .page-contact .outro__card,
  .page-contact .prep__num {
    transition: none;
  }
}