.page-contact {
  --pc-gap: clamp(24px, 5vw, 56px);
  --pc-line: var(--line);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.75;
}

.page-contact a {
  color: var(--blue);
}

.page-contact .container {
  width: 100%;
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  padding: clamp(18px, 4vw, 42px) 0 0;
}

.page-contact .contact-hero__frame {
  position: relative;
  border: 2px solid var(--pc-line);
  background:
    radial-gradient(130% 90% at 100% 0%, rgba(255, 90, 31, 0.17), transparent 62%),
    linear-gradient(158deg, #171B1F 0%, #0E1114 72%);
  padding: clamp(22px, 5vw, 52px);
  overflow: hidden;
}

.page-contact .contact-hero__frame::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px dashed rgba(243, 233, 219, 0.14);
  pointer-events: none;
}

.page-contact .contact-hero__frame::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 255, 61, 0.14), transparent 70%);
  pointer-events: none;
}

.page-contact .contact-hero__kicker {
  margin: 20px 0 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-contact .contact-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #F6EFE4;
}

.page-contact .contact-hero__lead {
  max-width: 60ch;
  margin: 0 0 30px;
  color: #CBD2D6;
  font-size: clamp(15px, 1.6vw, 17px);
}

.page-contact .contact-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  margin: 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 120px;
}

.page-contact .contact-hero__stats .stat__num {
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 700;
  color: var(--orange);
  line-height: 1.05;
}

.page-contact .contact-hero__stats .stat__label {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 章节标题 ---------- */
.page-contact .contact-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding-bottom: 16px;
  border-bottom: 2px solid var(--pc-line);
}

.page-contact .contact-head .chapter__num {
  margin: 0;
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-contact .contact-head .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: #F4EDE2;
}

.page-contact .contact-head .chapter__note {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .contact-head.is-current .chapter__num {
  color: var(--lime);
}

/* ---------- 01 三类咨询 ---------- */
.page-contact .contact-triage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .triage-card {
  position: relative;
  padding: 28px 22px 22px;
  background: #14181C;
  border: 2px solid var(--pc-line);
  transition: transform 160ms ease, border-color 160ms ease;
}

.page-contact .triage-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: var(--orange);
}

.page-contact .triage-card--usage::before { background: var(--blue); }
.page-contact .triage-card--fix::before { background: var(--orange); }
.page-contact .triage-card--biz::before { background: var(--green); }

.page-contact .triage-card:hover {
  transform: translateY(-3px);
  border-color: var(--orange);
}

.page-contact .triage-card__tag {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .triage-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  color: #F4EDE2;
}

.page-contact .triage-card__text {
  margin: 0 0 18px;
  font-size: 15px;
  color: #C4CBD0;
}

.page-contact .triage-card__route {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: #DCE2E5;
}

.page-contact .triage-card__route .mono {
  display: inline-block;
  margin-right: 8px;
  color: var(--orange);
  letter-spacing: 0.14em;
}

/* ---------- 02 联系方式 ---------- */
.page-contact .contact-reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .reach-plate {
  padding: clamp(22px, 4vw, 38px);
  background: #14181C;
  border: 2px solid var(--pc-line);
}

.page-contact .reach-plate__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-contact .reach-item {
  padding: 20px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .reach-item:first-of-type {
  border-top: 0;
  padding-top: 12px;
}

.page-contact .reach-item__label {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .reach-item__note {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.page-contact .copy-btn {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 14px;
  width: 100%;
  padding: 12px 14px;
  text-align: left;
  background: rgba(243, 233, 219, 0.03);
  border: 2px dashed var(--pc-line);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 90, 31, 0.09);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-contact .copy-btn[data-state="copied"] {
  border-color: var(--green);
  background: rgba(47, 163, 107, 0.13);
}

.page-contact .copy-btn__value {
  font-size: clamp(15px, 2.7vw, 20px);
  word-break: break-all;
  color: #F4EDE2;
}

.page-contact .copy-btn__hint {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .copy-btn[data-state="copied"] .copy-btn__hint {
  color: var(--green);
}

.page-contact .reach-call {
  display: inline-block;
  font-size: clamp(22px, 4.2vw, 32px);
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #F4EDE2;
  text-decoration: none;
  border-bottom: 3px solid var(--orange);
  padding-bottom: 2px;
  transition: color 160ms ease;
}

.page-contact .reach-call:hover {
  color: var(--orange);
}

.page-contact .reach-plate__foot {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}

.page-contact .reach-plate__foot a {
  color: var(--blue);
}

.page-contact .media {
  margin: 0;
  border: 2px solid var(--pc-line);
  background: #14181C;
}

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

.page-contact .media__caption {
  display: block;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 03 更正与线索 ---------- */
.page-contact .contact-fix__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .fix-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--pc-line);
}

.page-contact .fix-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px 20px;
  padding: 22px 0;
  border-bottom: 2px solid var(--pc-line);
  transition: background-color 160ms ease;
}

.page-contact .fix-step:hover {
  background: rgba(255, 90, 31, 0.05);
}

.page-contact .fix-step__num {
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange);
}

.page-contact .fix-step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  color: #F4EDE2;
}

.page-contact .fix-step__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  color: #C4CBD0;
}

.page-contact .contact-fix__plate {
  padding: 26px 24px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 2px solid var(--paper-ink);
  box-shadow: 8px 8px 0 var(--orange);
}

.page-contact .contact-fix__plate .plate__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange-deep);
}

.page-contact .contact-fix__plate .plate__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 21px;
  color: var(--paper-ink);
}

.page-contact .contact-fix__plate .plate__text {
  margin: 0 0 16px;
  font-size: 15px;
  color: #2B2F34;
}

.page-contact .contact-fix__link {
  margin: 0;
}

.page-contact .contact-fix__link a {
  color: var(--orange-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange-deep);
}

/* ---------- 04 内容合作 ---------- */
.page-contact .contact-coop__grid {
  gap: 20px;
}

.page-contact .coop-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px;
  background: var(--brown);
  border: 2px solid var(--pc-line);
  transition: transform 160ms ease, border-color 160ms ease;
}

.page-contact .coop-card:hover {
  transform: translateY(-3px);
  border-color: var(--orange);
}

.page-contact .coop-card .card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .coop-card__key {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-contact .coop-card .card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  color: #F4EDE2;
}

.page-contact .coop-card .card__text {
  margin: 0;
  font-size: 15px;
  color: #C6CDD2;
}

.page-contact .coop-card .card__meta {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .contact-coop__foot {
  margin: 26px 0 0;
  padding: 16px 18px;
  border-left: 6px solid var(--green);
  background: rgba(47, 163, 107, 0.08);
  font-size: 14px;
  color: #D3DADF;
}

/* ---------- 05 回复节奏 ---------- */
.page-contact .contact-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

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

.page-contact .rhythm-item {
  padding: 20px 0;
  border-top: 2px solid var(--pc-line);
}

.page-contact .rhythm-item:last-child {
  border-bottom: 2px solid var(--pc-line);
}

.page-contact .rhythm-item__key {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-contact .rhythm-item__val {
  display: block;
  margin: 6px 0 8px;
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  color: #F4EDE2;
}

.page-contact .rhythm-item__desc {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  color: #C4CBD0;
}

/* ---------- 页尾引导 ---------- */
.page-contact .contact-tail {
  background: var(--paper);
  color: var(--paper-ink);
  border-top: 2px solid var(--paper-ink);
  border-bottom: 2px solid var(--paper-ink);
}

.page-contact .contact-tail__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 30px);
  color: var(--paper-ink);
}

.page-contact .contact-tail__text {
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.85;
  color: #2B2F34;
}

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

.page-contact .contact-tail .btn--primary {
  background: var(--orange);
  border-color: var(--paper-ink);
  color: var(--paper-ink);
  box-shadow: 4px 4px 0 var(--paper-ink);
}

.page-contact .contact-tail .btn--primary:hover {
  background: var(--orange-deep);
  color: var(--paper);
}

.page-contact .contact-tail .btn--ghost {
  border-color: var(--paper-ink);
  color: var(--paper-ink);
  background: transparent;
}

.page-contact .contact-tail .btn--ghost:hover {
  background: var(--paper-ink);
  color: var(--paper);
}

/* ---------- 回顶 ---------- */
.page-contact .to-top {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 9px 12px;
  background: var(--orange);
  color: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--orange-deep);
  font: inherit;
  cursor: pointer;
}

.page-contact .to-top__label {
  font-size: 10px;
  letter-spacing: 0.16em;
}

.page-contact .to-top__num {
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

/* ---------- 断点：窄屏小优化 ---------- */
@media (max-width: 400px) {
  .page-contact .contact-hero__frame {
    padding: 20px 16px;
  }
  .page-contact .fix-step {
    grid-template-columns: 1fr;
  }
  .page-contact .copy-btn {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 断点：平板 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-triage__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .contact-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 断点：桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-head {
    grid-template-columns: 96px minmax(0, 1fr);
    grid-template-areas:
      "num title"
      "num note";
    column-gap: 28px;
    row-gap: 8px;
    align-items: start;
  }
  .page-contact .contact-head .chapter__num { grid-area: num; }
  .page-contact .contact-head .chapter__title { grid-area: title; }
  .page-contact .contact-head .chapter__note { grid-area: note; }

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

  .page-contact .contact-reach__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .contact-fix__body {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .contact-fix__plate {
    position: sticky;
    top: 96px;
  }

  .page-contact .contact-rhythm__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .contact-rhythm__media {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__frame {
    padding: 56px 60px;
  }
  .page-contact .contact-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.78fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .triage-card,
  .page-contact .coop-card,
  .page-contact .copy-btn,
  .page-contact .fix-step,
  .page-contact .reach-call {
    transition: none;
  }
  .page-contact .triage-card:hover,
  .page-contact .coop-card:hover {
    transform: none;
  }
}
</main>