.page-contact {
  --cut: 22px;
  --cut-sm: 14px;
  display: block;
  padding-bottom: clamp(48px, 7vw, 96px);
  color: var(--mist);
  background-image:
    radial-gradient(90% 58% at 88% 0%, rgba(70, 242, 210, 0.12), transparent 62%),
    radial-gradient(70% 48% at 0% 86%, rgba(242, 184, 75, 0.08), transparent 66%);
  background-repeat: no-repeat;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible,
.page-contact .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏：左侧联络信息 + 右侧主题矩阵 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(20px, 4vw, 44px) clamp(34px, 5vw, 62px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(38px, 9vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--ivory);
}

.page-contact .contact-hero__title span {
  display: block;
  color: var(--cyan);
}

.page-contact .contact-hero__lede {
  max-width: 46ch;
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-lines {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-lines__item {
  display: grid;
  gap: 6px;
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-lines__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-contact .contact-lines__value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.6vw, 24px);
  line-height: 1.25;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-contact a.contact-lines__value:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .contact-lines__value--num {
  color: var(--amber);
  letter-spacing: 0.04em;
  font-weight: 700;
}

.page-contact .contact-lines__note {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

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

.page-contact .hero-shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
}

.page-contact .hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-contact .hero-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 24, 38, 0.1) 0%, rgba(6, 24, 38, 0.82) 100%);
  pointer-events: none;
}

.page-contact .scope-matrix {
  padding: clamp(18px, 2.8vw, 26px);
  background-image: var(--scan), linear-gradient(155deg, rgba(11, 44, 71, 0.94), rgba(6, 24, 38, 0.94));
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-contact .scope-matrix__head {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

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

.page-contact .scope-matrix__item {
  padding: 10px 0 12px;
  border-top: 1px solid var(--line);
}

.page-contact .scope-matrix__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .scope-matrix__title {
  margin: 4px 0 3px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  color: var(--ivory);
}

.page-contact .scope-matrix__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 联系信息卡 ---------- */
.page-contact .contact-block {
  padding-block: clamp(32px, 5vw, 56px);
}

.page-contact .contact-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-contact .contact-block__sub {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

.page-contact .info-card {
  margin-top: 20px;
  padding: clamp(20px, 3vw, 34px);
  background: var(--ivory);
  color: var(--ink);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-contact .info-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .info-card__row {
  display: grid;
  gap: 5px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(16, 20, 24, 0.14);
}

.page-contact .info-card__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .info-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--moss);
}

.page-contact .info-card__value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 3.2vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .info-card__value--addr {
  font-family: var(--font-body);
  font-size: clamp(16px, 2.6vw, 19px);
  letter-spacing: 0.01em;
}

.page-contact .info-card__note {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(16, 20, 24, 0.66);
}

.page-contact .info-card__legal {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(16, 20, 24, 0.18);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(16, 20, 24, 0.6);
}

/* ---------- 提交建议 ---------- */
.page-contact .prep {
  padding-block: clamp(32px, 5vw, 58px);
}

.page-contact .prep__grid {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
}

.page-contact .prep__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: var(--ivory);
}

.page-contact .prep__text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .prep__intro .btn {
  margin-top: 8px;
}

.page-contact .prep-item {
  border-top: 1px solid var(--line);
}

.page-contact .prep-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-item summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .prep-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .prep-item summary::after {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--cyan);
}

.page-contact .prep-item[open] summary::after {
  content: "−";
}

.page-contact .prep-item__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .prep-item__title {
  flex: 1 1 auto;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ivory);
}

.page-contact .prep-item__hint {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--stone);
}

.page-contact .prep-item__body {
  padding: 0 0 20px 28px;
}

.page-contact .prep-item__body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .prep-item__body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 响应说明带 ---------- */
.page-contact .response {
  padding-block: clamp(30px, 5vw, 56px);
}

.page-contact .response__inner {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
}

.page-contact .response__panel {
  padding: clamp(20px, 3vw, 32px);
  background-image: var(--scan), linear-gradient(160deg, rgba(11, 44, 71, 0.96) 0%, rgba(6, 24, 38, 0.96) 100%);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--amber);
}

.page-contact .response__title {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-contact .response__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .response__clock {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0;
}

.page-contact .response__clock-item {
  flex: 1 1 140px;
  padding: 12px 14px;
  background: rgba(6, 24, 38, 0.66);
  border: 1px solid var(--line);
}

.page-contact .response__clock-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.2vw, 34px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .response__clock-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-contact .response__panel .btn {
  margin-top: 14px;
}

.page-contact .response__shot {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .response__shot img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .response__shot figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  background: linear-gradient(180deg, rgba(6, 24, 38, 0) 0%, rgba(6, 24, 38, 0.92) 100%);
}

/* ---------- 合作与纠错 ---------- */
.page-contact .coop {
  padding-block: clamp(32px, 5vw, 58px);
}

.page-contact .coop__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-contact .coop__grid {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.page-contact .coop__card {
  padding: clamp(18px, 2.8vw, 28px);
  background: rgba(11, 44, 71, 0.5);
  border: 1px solid var(--line);
  border-top: 3px solid var(--moss);
}

.page-contact .coop__card--alt {
  border-top-color: var(--clay);
}

.page-contact .coop__card h3 {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-contact .coop__card p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .coop__card .btn {
  margin-top: 8px;
}

/* ---------- 波形收束 ---------- */
.page-contact .signoff {
  padding-block: clamp(28px, 5vw, 52px) 0;
}

.page-contact .signoff__wave {
  display: block;
  width: 100%;
  height: clamp(56px, 8vw, 92px);
  color: var(--cyan);
  opacity: 0.9;
}

.page-contact .signoff__base {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1;
}

.page-contact .signoff__pulse {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-contact .signoff__text {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(15px, 2vw, 19px);
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-contact .strip-row {
  margin-top: clamp(20px, 3.5vw, 34px);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-contact .scope-matrix__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
  }

  .page-contact .prep-item__hint {
    display: inline-block;
  }

  .page-contact .coop__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 780px) {
  .page-contact .info-card__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .info-card__row {
    padding: 0 22px;
    border-bottom: 0;
    border-left: 1px solid rgba(16, 20, 24, 0.16);
    align-content: start;
  }

  .page-contact .info-card__row:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .info-card__row:last-child {
    padding-right: 0;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-contact .prep__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .prep__intro {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }

  .page-contact .response__inner {
    grid-template-columns: minmax(0, 1.14fr) minmax(0, 0.86fr);
    align-items: stretch;
  }

  .page-contact .response__shot img {
    min-height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-lines__value {
    transition: none;
  }
}
<<<END>>>