.page-contact {
  background: var(--paper-100);
  color: var(--paper-text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-masthead {
  position: relative;
  background: var(--ink-950);
  color: var(--ink-text);
  padding: clamp(24px, 4vw, 44px) 0 clamp(34px, 5vw, 60px);
  overflow: hidden;
}

.page-contact .contact-masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(47, 227, 224, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(47, 227, 224, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.75;
  pointer-events: none;
}

.page-contact .contact-masthead .container {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(237, 241, 247, 0.55);
}

.page-contact .breadcrumbs a {
  color: rgba(237, 241, 247, 0.55);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--cyan-400);
}

.page-contact .breadcrumbs a[aria-current="page"] {
  color: var(--amber-400);
}

.page-contact .contact-masthead .eyebrow {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact h1 {
  margin: 0 0 20px;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.6vw, 3.4rem);
  line-height: 1.07;
  letter-spacing: -0.018em;
  color: var(--ink-text);
}

.page-contact .contact-masthead .lede {
  margin: 0;
  max-width: 40em;
  font-family: var(--font-editorial);
  font-size: clamp(0.98rem, 1.4vw, 1.14rem);
  line-height: 1.9;
  color: rgba(232, 237, 247, 0.82);
}

.page-contact .contact-hint {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 12px 18px;
  max-width: 32em;
  border: 1px solid rgba(47, 227, 224, 0.3);
  border-left-width: 3px;
  background: rgba(47, 227, 224, 0.06);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

/* ---------- 左右分置 ---------- */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 980px) {
  .page-contact .contact-split {
    grid-template-columns: 45fr 55fr;
    align-items: stretch;
  }
}

/* 左侧深色 */
.page-contact .contact-aside {
  position: relative;
  background: var(--indigo-900);
  color: var(--ink-text);
  padding: clamp(28px, 4vw, 52px) clamp(20px, 3vw, 48px) clamp(36px, 4.6vw, 62px);
}

.page-contact .contact-aside::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 1px;
  background: var(--line-dark);
  display: none;
}

@media (min-width: 980px) {
  .page-contact .contact-aside::after { display: block; }
}

.page-contact .contact-aside__figure {
  position: relative;
  margin: 0 0 clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-contact .contact-aside__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(47, 227, 224, 0.14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(47, 227, 224, 0.14) 1px, transparent 1px);
  background-size: 40px 40px;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-contact .contact-aside__figure img {
  display: block;
  width: 100%;
  height: clamp(130px, 19vw, 210px);
  object-fit: cover;
  filter: saturate(0.9) contrast(1.1) brightness(0.72) hue-rotate(-8deg);
}

.page-contact .contact-aside h2 {
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-dark);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 1.9vw, 1.45rem);
  letter-spacing: -0.005em;
  color: var(--ink-text);
}

.page-contact .contact-cats-title {
  margin-top: clamp(30px, 3.6vw, 44px) !important;
}

.page-contact .contact-lines {
  display: grid;
  gap: 0;
  margin-bottom: 20px;
}

.page-contact .contact-line {
  display: grid;
  gap: 7px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(47, 227, 224, 0.18);
}

.page-contact .contact-line:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-contact .contact-line__label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .contact-line__value {
  font-family: var(--font-mono);
  font-size: clamp(0.92rem, 1.35vw, 1.06rem);
  line-height: 1.55;
  color: var(--ink-text);
  overflow-wrap: anywhere;
  text-decoration: none;
}

.page-contact a.contact-line__value {
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-contact a.contact-line__value:hover,
.page-contact a.contact-line__value:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-contact .contact-note {
  margin: 0 0 clamp(26px, 3.4vw, 40px);
  padding-left: 14px;
  border-left: 2px solid var(--amber-400);
  font-size: 0.84rem;
  line-height: 1.8;
  color: rgba(232, 237, 247, 0.62);
}

.page-contact .contact-cats {
  display: grid;
  gap: 10px;
}

.page-contact .cat-row {
  display: grid;
  gap: 6px;
  padding: 14px 16px 15px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line-soft);
  border-left-width: 3px;
  width: 100%;
}

.page-contact .cat-row--cyan { border-left-color: var(--cyan-400); }
.page-contact .cat-row--grass { border-left-color: var(--grass-500); }
.page-contact .cat-row--orange { border-left-color: var(--orange-500); }
.page-contact .cat-row--amber { border-left-color: var(--amber-400); }

.page-contact .cat-row__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  color: var(--ink-text);
}

.page-contact .cat-row__body {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: rgba(232, 237, 247, 0.68);
}

@media (min-width: 980px) {
  .page-contact .cat-row:nth-child(2) { width: 96%; }
  .page-contact .cat-row:nth-child(3) { width: 99%; }
  .page-contact .cat-row:nth-child(4) { width: 94%; }
}

/* 右侧纸面表单 */
.page-contact .contact-form-panel {
  background: var(--paper-100);
  padding: clamp(30px, 4vw, 56px) clamp(20px, 3.4vw, 62px) clamp(40px, 5vw, 74px);
  border-top: 1px solid var(--line-paper);
}

@media (min-width: 980px) {
  .page-contact .contact-form-panel { border-top: 0; }
}

.page-contact .contact-form-panel h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  letter-spacing: -0.012em;
  color: var(--paper-text);
}

.page-contact .panel-lede {
  margin: 0 0 clamp(24px, 3vw, 34px);
  max-width: 36em;
  font-family: var(--font-editorial);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-contact .contact-form {
  display: grid;
  gap: 20px;
}

.page-contact .form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 700px) {
  .page-contact .form-grid { grid-template-columns: 1fr 1fr; }
  .page-contact .field--full { grid-column: 1 / -1; }
}

.page-contact .field {
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-contact .field__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-500);
}

.page-contact .field__req {
  margin-left: 4px;
  color: var(--orange-500);
}

.page-contact .field input,
.page-contact .field select,
.page-contact .field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid rgba(44, 52, 68, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--paper-text);
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.page-contact .field textarea {
  min-height: 132px;
  resize: vertical;
}

.page-contact .field input::placeholder,
.page-contact .field textarea::placeholder {
  color: rgba(90, 100, 120, 0.62);
}

.page-contact .field input:focus,
.page-contact .field select:focus,
.page-contact .field textarea:focus {
  outline: none;
  border-color: var(--indigo-600);
  background: #ffffff;
  box-shadow: 0 2px 0 0 var(--cyan-400);
}

.page-contact .field input:invalid:not(:placeholder-shown),
.page-contact .field textarea:invalid:not(:placeholder-shown) {
  border-color: var(--rose-500);
}

.page-contact .field__help {
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--slate-500);
}

.page-contact .form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding-top: 6px;
}

.page-contact .form-reset {
  padding: 8px 2px;
  border: 0;
  border-bottom: 1px solid transparent;
  background: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate-500);
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-contact .form-reset:hover,
.page-contact .form-reset:focus-visible {
  color: var(--paper-text);
  border-bottom-color: var(--paper-text);
}

/* ---------- 处理流程 ---------- */
.page-contact .contact-flow {
  background: var(--slate-100);
  border-top: 1px solid var(--line-paper);
  padding: clamp(44px, 5.6vw, 82px) 0;
}

.page-contact .flow-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(28px, 3.6vw, 44px);
}

.page-contact .flow-head .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--indigo-600);
}

.page-contact .flow-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  letter-spacing: -0.014em;
  color: var(--paper-text);
}

.page-contact .flow-head p {
  margin: 0;
  max-width: 40em;
  font-family: var(--font-editorial);
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--slate-500);
}

.page-contact .flow-steps {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line-paper);
  border-top: 1px solid var(--line-paper);
  border-bottom: 1px solid var(--line-paper);
}

@media (min-width: 760px) {
  .page-contact .flow-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1120px) {
  .page-contact .flow-steps { grid-template-columns: repeat(4, 1fr); }
}

.page-contact .flow-step {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 24px 22px 28px;
  background: var(--slate-100);
}

.page-contact .flow-step__num {
  justify-self: start;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--indigo-600);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  color: var(--indigo-600);
}

.page-contact .flow-step:nth-child(1) .flow-step__num { border-bottom-color: var(--cyan-400); }
.page-contact .flow-step:nth-child(2) .flow-step__num { border-bottom-color: var(--grass-500); }
.page-contact .flow-step:nth-child(3) .flow-step__num { border-bottom-color: var(--orange-500); }
.page-contact .flow-step:nth-child(4) .flow-step__num { border-bottom-color: var(--amber-400); }

.page-contact .flow-step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--paper-text);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--slate-500);
}

/* ---------- 素材与引用 ---------- */
.page-contact .contact-usage {
  background: var(--indigo-900);
  color: var(--ink-text);
  padding: clamp(44px, 5.6vw, 82px) 0;
}

.page-contact .usage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-contact .usage-grid { grid-template-columns: 1.05fr 0.95fr; }
}

.page-contact .usage-copy .eyebrow {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .usage-copy h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  letter-spacing: -0.014em;
  color: var(--ink-text);
}

.page-contact .usage-copy p {
  margin: 0 0 16px;
  max-width: 40em;
  font-size: 0.96rem;
  line-height: 1.88;
  color: rgba(232, 237, 247, 0.78);
}

.page-contact .usage-stats {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
}

.page-contact .usage-stat {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
}

.page-contact .usage-stat__num {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  color: var(--amber-400);
}

.page-contact .usage-stat__label {
  font-size: 0.86rem;
  line-height: 1.65;
  color: rgba(232, 237, 247, 0.7);
}

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

.page-contact .usage-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.1) brightness(0.85);
}

/* ---------- 来信之前 ---------- */
.page-contact .contact-routes {
  background: var(--paper-100);
  padding: clamp(40px, 5vw, 74px) 0 clamp(48px, 6vw, 90px);
}

.page-contact .contact-routes .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--indigo-600);
}

.page-contact .contact-routes .flow-head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .route-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line-paper);
  border-top: 1px solid var(--line-paper);
  border-bottom: 1px solid var(--line-paper);
}

@media (min-width: 700px) {
  .page-contact .route-list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1120px) {
  .page-contact .route-list { grid-template-columns: repeat(5, 1fr); }
}

.page-contact .route-item {
  background: var(--paper-100);
}

.page-contact .route-link {
  display: grid;
  gap: 8px;
  align-content: start;
  height: 100%;
  padding: 22px 18px 24px;
  text-decoration: none;
  color: inherit;
  transition: background 200ms ease;
}

.page-contact .route-link:hover,
.page-contact .route-link:focus-visible {
  background: #ffffff;
}

.page-contact .route-link__label {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--paper-text);
}

.page-contact .route-link:hover .route-link__label {
  color: var(--indigo-600);
}

.page-contact .route-link__desc {
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--slate-500);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-link,
  .page-contact .form-reset,
  .page-contact a.contact-line__value,
  .page-contact .field input,
  .page-contact .field select,
  .page-contact .field textarea {
    transition: none;
  }
}