.page-contact {
  --c-rail-top: 96px;
  color: var(--board);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(92px, 15vw, 156px) 0 clamp(30px, 5vw, 60px);
  background:
    radial-gradient(130% 92% at 10% -10%, rgba(15, 76, 58, .9) 0%, rgba(11, 61, 46, 0) 64%),
    linear-gradient(180deg, var(--shadow-deep) 0%, var(--field) 100%);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(26px, 5vw, 48px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-contact .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-contact .hero-grid {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: end;
}

.page-contact h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.12;
  color: var(--board);
}

.page-contact .hero-lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.8;
  color: rgba(244, 247, 242, .82);
}

.page-contact .hero-mail {
  position: relative;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(232, 255, 58, .34);
  background: linear-gradient(158deg, rgba(232, 255, 58, .09) 0%, rgba(7, 42, 32, .74) 60%);
  overflow: hidden;
}

.page-contact .hero-mail::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(232, 255, 58, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(232, 255, 58, .07) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}

.page-contact .hero-mail-label {
  position: relative;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .hero-mail-value {
  position: relative;
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(18px, 3.6vw, 42px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--fluro);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .hero-mail-foot {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-contact .hero-mail-time {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .copy-btn {
  flex: none;
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  border: 1px solid var(--fluro);
  background: transparent;
  color: var(--fluro);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible,
.page-contact .copy-btn.is-copied {
  background: var(--fluro);
  color: var(--field);
}

/* ---------- 通栏窄图 ---------- */
.page-contact .contact-banner {
  padding: clamp(20px, 4vw, 42px) 0 0;
  background: var(--field);
}

.page-contact .channel-banner {
  margin: 0;
}

.page-contact .channel-banner img {
  display: block;
  width: 100%;
  height: clamp(150px, 28vw, 320px);
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(.62) brightness(.84) contrast(1.06);
}

.page-contact .channel-banner figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mist);
}

/* ---------- 主体三栏 ---------- */
.page-contact .contact-body {
  padding: clamp(44px, 7vw, 92px) 0 clamp(48px, 8vw, 104px);
  background: var(--field);
}

.page-contact .contact-columns {
  display: grid;
  gap: clamp(34px, 5vw, 56px);
}

.page-contact .column-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 29px);
  line-height: 1.26;
  letter-spacing: -.01em;
  color: var(--board);
}

.page-contact .column-lead {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 242, .78);
}

/* 渠道卡 */
.page-contact .channel-stack {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-contact .channel-card {
  position: relative;
  padding: 20px 18px 20px 20px;
  border: 1px solid rgba(214, 222, 214, .2);
  background: linear-gradient(150deg, rgba(244, 247, 242, .07) 0%, rgba(7, 42, 32, .66) 72%);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--fluro);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(232, 255, 58, .5);
  box-shadow: 0 16px 32px rgba(7, 42, 32, .55);
}

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  transform: scaleY(1);
}

.page-contact .channel-tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--fluro);
}

.page-contact .channel-name {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--board);
}

.page-contact .channel-value {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.62;
  color: var(--board);
  overflow-wrap: anywhere;
}

.page-contact .channel-value.mono {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--fluro);
}

.page-contact .channel-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* 来意分流 */
.page-contact .intent-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-contact .chip {
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--board);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .chip:hover,
.page-contact .chip:focus-visible {
  border-color: var(--fluro);
  color: var(--fluro);
}

.page-contact .chip[aria-pressed="true"] {
  background: var(--fluro);
  border-color: var(--fluro);
  color: var(--field);
}

.page-contact .intent-list {
  display: grid;
  gap: 16px;
}

.page-contact .intent-item {
  padding: 18px 20px;
  border-left: 2px solid var(--mid);
  background: rgba(244, 247, 242, .05);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .intent-item:hover,
.page-contact .intent-item:focus-within {
  border-left-color: var(--fluro);
  background: rgba(244, 247, 242, .085);
}

.page-contact .intent-item h3 {
  margin: 0 0 11px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .01em;
  color: var(--board);
}

.page-contact .intent-item ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-contact .intent-item li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 247, 242, .78);
}

.page-contact .intent-item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 1px;
  background: var(--fluro);
}

/* 右侧信息条 */
.page-contact .rail-inner {
  display: grid;
  gap: 18px;
}

.page-contact .rail-block {
  padding: 20px 18px;
  border: 1px solid rgba(214, 222, 214, .22);
  background: rgba(7, 42, 32, .62);
}

.page-contact .rail-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--board);
}

.page-contact .rail-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .rail-list li {
  position: relative;
  padding-left: 15px;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(244, 247, 242, .75);
}

.page-contact .rail-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 5px;
  height: 5px;
  background: var(--fluro);
  opacity: .85;
}

.page-contact .rail-facts {
  margin: 0 0 16px;
  display: grid;
  gap: 11px;
}

.page-contact .rail-facts > div {
  display: grid;
  gap: 3px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(214, 222, 214, .14);
}

.page-contact .rail-facts dt {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-contact .rail-facts dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--board);
  overflow-wrap: anywhere;
}

.page-contact .rail-facts dd.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--fluro);
}

.page-contact .rail-block .copy-btn {
  width: 100%;
}

.page-contact .rail-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-contact .rail-links a {
  display: block;
  padding-bottom: 9px;
  font-size: 13.5px;
  color: rgba(244, 247, 242, .8);
  text-decoration: none;
  border-bottom: 1px solid rgba(214, 222, 214, .12);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-contact .rail-links a:hover,
.page-contact .rail-links a:focus-visible {
  color: var(--fluro);
  padding-left: 6px;
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-partner {
  padding: clamp(48px, 8vw, 100px) 0;
  background: linear-gradient(180deg, var(--field) 0%, var(--shadow-deep) 100%);
}

.page-contact .partner-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-contact .partner-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .partner-figure img {
  display: block;
  width: 100%;
  height: clamp(200px, 44vw, 430px);
  object-fit: cover;
  filter: saturate(.6) brightness(.85) contrast(1.06);
}

.page-contact .partner-figure figcaption {
  padding: 12px 14px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mist);
  background: rgba(7, 42, 32, .7);
}

.page-contact .partner-copy h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--board);
}

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

.page-contact .partner-list li {
  padding: 18px 0;
  border-top: 1px solid rgba(214, 222, 214, .2);
}

.page-contact .partner-list li:last-child {
  border-bottom: 1px solid rgba(214, 222, 214, .2);
}

.page-contact .partner-list h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--board);
}

.page-contact .partner-list h3::before {
  content: "";
  flex: none;
  width: 12px;
  height: 2px;
  background: var(--fluro);
}

.page-contact .partner-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 247, 242, .76);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-next {
  padding: clamp(40px, 7vw, 80px) 0 clamp(56px, 9vw, 110px);
  border-top: 1px solid rgba(232, 255, 58, .35);
  background: var(--shadow-deep);
}

.page-contact .next-inner {
  display: grid;
  gap: 26px;
}

.page-contact .next-copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--board);
}

.page-contact .next-text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 242, .78);
}

.page-contact .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .channel-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 780px) {
  .page-contact .next-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-contact .next-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-contact .partner-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6.4fr);
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-columns {
    grid-template-columns: minmax(0, 3.2fr) minmax(0, 6.2fr) minmax(0, 2.9fr);
    gap: clamp(26px, 3vw, 46px);
  }

  .page-contact .channel-stack {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .page-contact .rail-inner {
    position: sticky;
    top: var(--c-rail-top);
  }
}