.page-contact {
  --pc-card-pad: 20px;
  --pc-gap: 16px;
  color: var(--white);
  font-family: var(--f-body);
}

.page-contact .breadcrumb {
  margin: 18px 0 26px;
  font-size: 0.82rem;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 24px;
  padding-bottom: 6px;
}

.page-contact .hero-intro {
  position: relative;
  padding: 22px 18px 22px 20px;
  border-left: 2px solid var(--acid);
  background: linear-gradient(135deg, rgba(20, 92, 58, 0.55) 0%, rgba(10, 15, 12, 0) 62%);
}

.page-contact h1 {
  margin: 10px 0 14px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.6vw, 3.2rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.page-contact .lead {
  max-width: 48ch;
  margin: 0;
  color: var(--grey);
  font-size: 1rem;
  line-height: 1.85;
}

.page-contact h2 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-contact .hero-grid {
  display: grid;
  gap: var(--pc-gap);
}

/* 联系卡 */
.page-contact .contact-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: var(--pc-card-pad);
  background: var(--stand);
  border: 1px solid var(--line);
}

.page-contact .contact-card__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.26;
}

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

.page-contact .contact-card__mail {
  margin: 12px 0 0;
  padding: 4px 0 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: clamp(1.05rem, 5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--acid);
  word-break: break-all;
  cursor: copy;
  user-select: all;
  -webkit-user-select: all;
  transition: color var(--t-fast) var(--ease);
}

.page-contact .contact-card__mail:hover {
  color: var(--acid-soft);
}

.page-contact .contact-card__mail:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 4px;
}

.page-contact .contact-card__hint {
  margin: 10px 0 0;
  color: var(--grey);
  font-size: 0.85rem;
  line-height: 1.7;
}

.page-contact .contact-card__list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
}

.page-contact .contact-card__list div {
  display: grid;
  gap: 2px;
}

.page-contact .contact-card__list dt {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .contact-card__list dd {
  margin: 0;
  color: var(--white);
  font-size: 0.98rem;
  line-height: 1.6;
}

.page-contact .mono {
  font-family: var(--f-mono);
  letter-spacing: 0.05em;
}

/* 右侧小卡 */
.page-contact .hero-aside {
  display: grid;
  gap: var(--pc-gap);
  align-content: start;
}

.page-contact .brief-card {
  padding: 18px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-top: 2px solid var(--acid);
}

.page-contact .brief-list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0;
}

.page-contact .brief-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 8px;
  color: var(--grey);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-contact .brief-list span {
  padding-top: 2px;
  font-family: var(--f-mono);
  font-size: 0.74rem;
  color: var(--acid);
}

.page-contact .hero-links {
  display: grid;
  gap: 8px;
}

.page-contact .hero-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  color: var(--white);
  font-size: 0.92rem;
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .hero-links a::after {
  content: "→";
  font-family: var(--f-mono);
  color: var(--acid);
}

.page-contact .hero-links a:hover {
  border-color: var(--turf);
  transform: translateX(2px);
}

.page-contact .hero-links a:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

/* ---------- 通用区块 ---------- */
.page-contact .block {
  margin-top: clamp(44px, 7vw, 76px);
}

.page-contact .block__head {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.page-contact .block__lede {
  max-width: 58ch;
  margin: 0;
  color: var(--grey);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ---------- 01 三类来信 ---------- */
.page-contact .scene-list {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}

.page-contact .scene {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px 18px;
  background: var(--ink);
  border: 1px solid var(--line);
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .scene:hover {
  transform: translateY(-2px);
  border-color: var(--turf);
}

.page-contact .scene:focus-within {
  border-color: var(--acid);
}

.page-contact .scene__num {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--acid);
}

.page-contact .scene h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-contact .scene p {
  margin: 0;
  color: var(--grey);
  font-size: 0.93rem;
  line-height: 1.78;
}

.page-contact .scene .scene__tip {
  margin-top: 2px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--steel);
  font-size: 0.85rem;
}

/* ---------- 02 响应节奏 ---------- */
.page-contact .split-grid {
  display: grid;
  gap: 28px;
}

.page-contact .stat-row {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
}

.page-contact .stat {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.page-contact .stat__num {
  margin: 0 0 6px;
  font-family: var(--f-mono);
  font-size: clamp(1.7rem, 6vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--acid);
}

.page-contact .stat__label {
  margin: 0;
  color: var(--grey);
  font-size: 0.82rem;
  line-height: 1.65;
}

.page-contact .pace-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--turf);
  color: var(--steel);
  font-size: 0.86rem;
  line-height: 1.8;
}

.page-contact .timeline {
  list-style: none;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 2px 0 0 18px;
  border-left: 1px solid var(--line);
}

.page-contact .timeline li {
  position: relative;
  padding-bottom: 20px;
}

.page-contact .timeline li:last-child {
  padding-bottom: 0;
}

.page-contact .timeline li::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--acid);
}

.page-contact .timeline h3 {
  margin: 0 0 5px;
  font-size: 0.98rem;
  font-weight: 700;
}

.page-contact .timeline p {
  margin: 0;
  color: var(--grey);
  font-size: 0.9rem;
  line-height: 1.75;
}

/* ---------- 03 合作方向 ---------- */
.page-contact .partner-strip {
  list-style: none;
  display: flex;
  gap: 10px;
  margin: 0 0 20px;
  padding: 0 0 6px;
  overflow-x: auto;
}

.page-contact .partner-strip li {
  flex: 0 0 auto;
  padding: 7px 13px;
  border: 1px solid var(--acid);
  background: rgba(200, 255, 61, 0.06);
  color: var(--acid);
  font-family: var(--f-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-contact .partner-strip li:nth-child(even) {
  border-color: var(--cyan);
  background: rgba(111, 231, 200, 0.06);
  color: var(--cyan);
}

.page-contact .note-card {
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--turf);
}

.page-contact .note-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 700;
}

.page-contact .note-card p {
  margin: 0;
  color: var(--grey);
  font-size: 0.91rem;
  line-height: 1.78;
}

/* ---------- 04 反馈表单 ---------- */
.page-contact .feedback-grid {
  display: grid;
  gap: 24px;
}

.page-contact .feedback-fields {
  display: grid;
  gap: 14px;
}

.page-contact .field {
  display: grid;
  gap: 6px;
}

.page-contact .field label,
.page-contact .topic-field legend {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-contact .field input[type="text"],
.page-contact .field textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 0;
  color: var(--white);
  font-family: var(--f-body);
  font-size: 0.94rem;
  line-height: 1.6;
  transition: border-color var(--t-fast) var(--ease);
}

.page-contact .field input[type="text"]::placeholder,
.page-contact .field textarea::placeholder {
  color: var(--steel);
}

.page-contact .field input[type="text"]:hover,
.page-contact .field textarea:hover {
  border-color: var(--turf);
}

.page-contact .field input[type="text"]:focus-visible,
.page-contact .field textarea:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 1px;
  border-color: var(--acid);
}

.page-contact .field textarea {
  min-height: 108px;
  resize: vertical;
}

.page-contact .topic-field {
  margin: 0;
  padding: 12px 14px 14px;
  border: 1px solid var(--line);
}

.page-contact .topic-field legend {
  padding: 0 6px;
}

.page-contact .topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.page-contact .topic-tags label {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--grey);
  font-family: var(--f-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .topic-tags label:hover {
  border-color: var(--turf);
  color: var(--white);
}

.page-contact .topic-tags input:checked + label {
  border-color: var(--acid);
  background: rgba(200, 255, 61, 0.09);
  color: var(--acid);
}

.page-contact .topic-tags input:focus-visible + label {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.page-contact .privacy-line {
  margin: 2px 0 0;
  color: var(--steel);
  font-size: 0.82rem;
  line-height: 1.75;
}

.page-contact .privacy-line a {
  color: var(--acid-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .privacy-line a:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

.page-contact .feedback-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .draft-card {
  padding: 16px;
  background: var(--stand);
  border: 1px solid var(--line);
}

.page-contact .draft {
  margin: 10px 0 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  line-height: 1.9;
  color: var(--acid-soft);
  white-space: pre-wrap;
  overflow-x: auto;
}

.page-contact .checklist {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .checklist h3 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 700;
}

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

.page-contact .checklist li {
  position: relative;
  padding-left: 16px;
  color: var(--grey);
  font-size: 0.88rem;
  line-height: 1.65;
}

.page-contact .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--acid);
}

.page-contact .checklist__tail {
  margin: 12px 0 0;
  color: var(--steel);
  font-size: 0.82rem;
  line-height: 1.7;
}

/* ---------- 收尾 ---------- */
.page-contact .closing {
  margin-top: clamp(48px, 8vw, 82px);
  border: 1px solid var(--line);
  display: grid;
}

.page-contact .closing__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--stand);
}

.page-contact .closing__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.page-contact .closing__body {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 22px 20px;
  background: var(--stand);
}

.page-contact .closing__body p {
  max-width: 42ch;
  margin: 0;
  color: var(--grey);
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-contact .closing__body .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .contact-hero {
    gap: 30px;
  }

  .page-contact .hero-intro {
    padding: 28px 26px 28px 28px;
  }

  .page-contact .scene-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-card {
    padding: 26px;
  }

  .page-contact .feedback-fields {
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }

  .page-contact .split-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .page-contact .feedback-grid {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 34px;
  }

  .page-contact .closing {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .page-contact .closing__media {
    aspect-ratio: auto;
    min-height: 290px;
  }

  .page-contact .closing__body {
    padding: 34px 32px;
    align-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .scene,
  .page-contact .hero-links a,
  .page-contact .contact-card__mail,
  .page-contact .topic-tags label {
    transition: none;
  }

  .page-contact .scene:hover,
  .page-contact .hero-links a:hover {
    transform: none;
  }
}