.page-contact {
  --pc-gap: clamp(22px, 3.6vw, 44px);
  --pc-pad: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(44px, 7vw, 92px);
  overflow-x: clip;
}

.page-contact .crumbs {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 16px 0 6px;
  font-size: 13px;
  color: var(--silver);
}

.page-contact .crumbs__link {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

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

.page-contact .crumbs__item + .crumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-contact .crumbs__current {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.pc-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 58px) 0 clamp(24px, 4vw, 46px);
}

.pc-hero::before {
  content: "";
  position: absolute;
  right: -12%;
  top: -46%;
  width: min(640px, 82vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 242, 196, 0.14), rgba(57, 242, 196, 0) 68%);
  pointer-events: none;
}

.pc-hero::after {
  content: "";
  position: absolute;
  left: -18%;
  bottom: -30%;
  width: min(520px, 70vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, 0.09), rgba(255, 138, 61, 0) 70%);
  pointer-events: none;
}

.pc-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.page-contact .pc-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--white);
  margin: 12px 0 16px;
  text-shadow: 0 0 22px rgba(57, 242, 196, 0.16);
}

.pc-hero .lede {
  max-width: 720px;
  color: var(--silver);
}

.pc-hero__note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 24px 0 0;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.pc-hero__pulse {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(57, 242, 196, 0.5);
  animation: pc-pulse 2.4s var(--ease) infinite;
}

@keyframes pc-pulse {
  0% { box-shadow: 0 0 0 0 rgba(57, 242, 196, 0.45); }
  70% { box-shadow: 0 0 0 12px rgba(57, 242, 196, 0); }
  100% { box-shadow: 0 0 0 0 rgba(57, 242, 196, 0); }
}

/* ---------- 通用标题与导语 ---------- */
.page-contact .pc-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.7vw, 37px);
  line-height: 1.16;
  letter-spacing: -0.006em;
  color: var(--white);
  margin: 10px 0 14px;
}

.page-contact .pc-lede {
  font-size: clamp(15.5px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--silver);
  max-width: 760px;
  margin: 0 0 8px;
}

/* ---------- 两条联系通道 ---------- */
.pc-lines {
  padding: clamp(28px, 4.4vw, 56px) 0;
}

.pc-lines__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.pc-lines__media {
  margin: 0;
}

.pc-chan {
  position: relative;
  margin: 18px 0 0;
  padding: clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 48, 42, 0.92), rgba(11, 31, 26, 0.72));
  box-shadow: var(--shadow-panel);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.pc-chan--phone {
  border-left-color: var(--orange);
}

.pc-chan:hover {
  transform: translateY(-2px);
}

.pc-chan__k {
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--silver);
  margin: 0;
}

.pc-chan__v {
  margin: 8px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 27px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.pc-chan--phone .pc-chan__v {
  color: var(--orange);
}

.pc-chan__d {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 处理节奏 ---------- */
.pc-rhythm {
  padding: clamp(28px, 4.4vw, 56px) 0;
}

.pc-clock {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
}

.pc-clock__labels {
  display: flex;
  justify-content: space-between;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.pc-clock__track {
  position: relative;
  height: 16px;
  margin: 12px 0 20px;
  border-radius: 8px;
  background: rgba(30, 74, 64, 0.5);
  overflow: hidden;
}

.pc-clock__band {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 41.67%;
  width: 33.33%;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--cyan-dim), var(--cyan));
  box-shadow: 0 0 20px rgba(57, 242, 196, 0.34);
}

.pc-clock__band--sync {
  left: 75%;
  width: 8.33%;
  border-radius: 0 8px 8px 0;
  background: linear-gradient(90deg, var(--orange), rgba(255, 138, 61, 0.6));
  box-shadow: 0 0 16px rgba(255, 138, 61, 0.32);
}

.pc-clock__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
}

.pc-clock__legend li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--silver);
}

.pc-clock__dot {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 3px;
}

.pc-clock__dot--cyan { background: var(--cyan); }
.pc-clock__dot--orange { background: var(--orange); }
.pc-clock__dot--silver { background: var(--silver); }

/* ---------- 合作方向 ---------- */
.pc-partner {
  padding: clamp(28px, 4.4vw, 56px) 0;
}

.pc-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(20px, 3vw, 32px);
}

.pc-direc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(18, 48, 42, 0.92), rgba(11, 31, 26, 0.78));
  overflow: hidden;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.pc-direc:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.pc-direc[open] {
  border-color: var(--cyan);
}

.pc-direc__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px clamp(16px, 2.4vw, 22px);
  cursor: pointer;
  list-style: none;
}

.pc-direc__head::-webkit-details-marker {
  display: none;
}

.pc-direc__no {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.pc-direc__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--white);
}

.pc-direc__head::after {
  content: "";
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform var(--t) var(--ease);
  flex: 0 0 auto;
}

.pc-direc[open] .pc-direc__head::after {
  transform: rotate(-135deg);
}

.pc-direc__body {
  padding: 0 clamp(16px, 2.4vw, 22px) 22px;
}

.pc-direc__body > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.pc-direc__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.pc-direc__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.pc-direc__list li:last-child {
  margin-bottom: 0;
}

.pc-direc__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 来信清单 ---------- */
.pc-brief {
  padding: clamp(28px, 4.4vw, 56px) 0;
}

.pc-brief__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.pc-checklist {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.pc-checklist__item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(18, 48, 42, 0.52);
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.pc-checklist__item:hover {
  border-color: rgba(57, 242, 196, 0.5);
}

.pc-checklist__label {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 13px 16px;
  cursor: pointer;
}

.pc-checklist__label input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.pc-checklist__box {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--silver);
  border-radius: 5px;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.pc-checklist__label input:focus-visible + .pc-checklist__box {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.pc-checklist__label input:checked + .pc-checklist__box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.pc-checklist__label input:checked + .pc-checklist__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg);
}

.pc-checklist__txt {
  font-size: 15px;
  line-height: 1.7;
  color: var(--silver);
  transition: color var(--t) var(--ease);
}

.pc-checklist__label input:checked ~ .pc-checklist__txt {
  color: var(--white);
}

.pc-brief__side {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--orange);
  background: linear-gradient(180deg, rgba(18, 48, 42, 0.86), rgba(11, 31, 26, 0.7));
}

.pc-brief__side-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--white);
  margin: 0 0 12px;
}

.pc-brief__side p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.pc-brief__side p:last-child {
  margin-bottom: 0;
}

/* ---------- 通信地址 ---------- */
.pc-address {
  padding: clamp(20px, 3vw, 40px) 0;
}

.pc-address__card {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(18, 48, 42, 0.96), rgba(11, 31, 26, 0.82));
  box-shadow: var(--shadow-panel);
}

.pc-address__card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid rgba(201, 211, 214, 0.16);
  pointer-events: none;
}

.pc-address__card::before {
  content: "";
  position: absolute;
  right: 40px;
  bottom: -150px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 1px solid rgba(57, 242, 196, 0.12);
  pointer-events: none;
}

.pc-address__line {
  position: relative;
  margin: 4px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3vw, 24px);
  letter-spacing: 0.06em;
  color: var(--white);
}

.pc-address__desc {
  position: relative;
  margin: 0;
  max-width: 660px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 更多入口 ---------- */
.pc-fast {
  padding: clamp(28px, 4.4vw, 56px) 0;
}

.pc-fast__list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.pc-fast__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.pc-fast__k {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--silver);
}

.pc-fast__link {
  flex: 0 0 auto;
  font-size: 14.5px;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.pc-fast__link:hover {
  border-color: var(--cyan);
  color: var(--white);
}

/* ---------- 收尾宽幅 ---------- */
.pc-signoff {
  padding-top: clamp(30px, 5vw, 68px);
}

.pc-signoff__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.pc-signoff__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.pc-signoff__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: clamp(20px, 4vw, 46px);
  background: linear-gradient(180deg, rgba(6, 19, 16, 0) 0%, rgba(6, 19, 16, 0.86) 62%, rgba(6, 19, 16, 0.96) 100%);
}

.pc-signoff__line {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 32px);
  letter-spacing: -0.006em;
  color: var(--white);
  text-shadow: 0 0 18px rgba(57, 242, 196, 0.2);
}

.pc-signoff__sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .pc-partner__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .pc-fast__item {
    flex-wrap: nowrap;
  }
}

@media (min-width: 940px) {
  .pc-lines__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 54px);
  }

  .pc-lines__media {
    position: sticky;
    top: 96px;
  }

  .pc-brief__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 54px);
  }

  .pc-clock {
    padding: clamp(26px, 3vw, 38px) clamp(30px, 4vw, 50px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pc-hero__pulse {
    animation: none;
  }

  .pc-chan:hover,
  .pc-direc:hover {
    transform: none;
  }
}
<<<END>>>