.page-contact {
  --contact-edge: 1px solid var(--wire);
  background: var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-contact .breadcrumbs {
  padding-top: clamp(1rem, 3vw, 1.75rem);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--wire);
}

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

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--amber);
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0;
}

.page-contact .section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.4vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0.55rem 0 0;
  color: var(--paper);
}

.page-contact .section__lead {
  margin: 0.9rem 0 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 首屏工作台 ---------- */

.page-contact .desk {
  display: grid;
  gap: clamp(1.4rem, 4vw, 3rem);
  padding-top: clamp(1.4rem, 4vw, 2.75rem);
}

.page-contact .desk__copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0.6rem 0 0;
  color: var(--paper);
  transform: scaleX(0.95);
  transform-origin: left center;
}

.page-contact .desk__lead {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  font-size: 0.97rem;
  line-height: 1.85;
  color: var(--paper);
  opacity: 0.86;
}

.page-contact .desk__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 1.25rem 0 0;
}

.page-contact .desk__meta-text {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .desk__frame {
  margin: 0;
  padding: 0.55rem;
  border: var(--contact-edge);
  background: var(--ink-800);
}

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

.page-contact .desk__badge {
  margin-top: 0.6rem;
  padding-top: 0.55rem;
  border-top: var(--contact-edge);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  color: var(--mist);
}

/* ---------- 反馈类型选择器 ---------- */

.page-contact .picker-block {
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .picker {
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
  border: var(--contact-edge);
  background: var(--wire);
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .picker__item {
  position: relative;
  display: flex;
  min-width: 0;
}

.page-contact .picker__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .picker__card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1 1 auto;
  min-width: 0;
  padding: clamp(1.05rem, 2.6vw, 1.5rem);
  background: var(--ink-800);
  cursor: pointer;
  transition: background var(--ease);
}

.page-contact .picker__card::before {
  content: "";
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 0.5rem;
  height: 0.5rem;
  border: 1px solid var(--wire);
  border-radius: 50%;
  background: transparent;
  transition: background var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-contact .picker__card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--amber);
  transition: width var(--ease);
}

.page-contact .picker__input:checked + .picker__card {
  background: var(--sapphire);
}

.page-contact .picker__input:checked + .picker__card::before {
  background: var(--lime);
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(200, 255, 77, 0.22);
}

.page-contact .picker__input:checked + .picker__card::after {
  width: 100%;
}

.page-contact .picker__input:focus-visible + .picker__card {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-contact .picker__card:hover {
  background: var(--ink-800);
  box-shadow: inset 0 0 0 1px var(--amber);
}

.page-contact .picker__input:checked + .picker__card:hover {
  background: var(--sapphire-bright);
  box-shadow: none;
}

.page-contact .picker__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-contact .picker__input:checked + .picker__card .picker__num {
  color: var(--lime);
}

.page-contact .picker__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.25;
  color: var(--paper);
}

.page-contact .picker__desc {
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mist);
  margin-top: auto;
}

.page-contact .picker__input:checked + .picker__card .picker__desc {
  color: rgba(247, 250, 255, 0.9);
}

.page-contact .picker__flag {
  padding-top: 0.5rem;
  border-top: 1px solid var(--wire);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .picker__input:checked + .picker__card .picker__flag {
  color: rgba(247, 250, 255, 0.86);
  border-top-color: rgba(247, 250, 255, 0.28);
}

/* ---------- 反馈材料 + 联系侧栏 ---------- */

.page-contact .workbench {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .workbench__main .section__lead {
  max-width: 52ch;
}

.page-contact .ledger {
  list-style: none;
  margin: clamp(1.3rem, 3vw, 1.9rem) 0 0;
  padding: 0;
  border-top: var(--contact-edge);
}

.page-contact .ledger__row {
  display: grid;
  gap: 0.35rem;
  padding: 1.05rem 0;
  border-bottom: var(--contact-edge);
}

.page-contact .ledger__key {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .ledger__val {
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.88;
}

.page-contact .materials {
  margin-top: 1.4rem;
  border: var(--contact-edge);
  background: rgba(11, 31, 51, 0.6);
}

.page-contact .materials__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.05rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .materials__summary::-webkit-details-marker {
  display: none;
}

.page-contact .materials__summary::after {
  content: "+";
  font-size: 1rem;
  line-height: 1;
  color: var(--lime);
}

.page-contact .materials[open] .materials__summary::after {
  content: "−";
}

.page-contact .materials__summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-contact .materials__list {
  list-style: none;
  margin: 0;
  padding: 0 1.05rem 1.15rem;
  display: grid;
  gap: 0.6rem;
}

.page-contact .materials__list li {
  position: relative;
  padding-left: 0.95rem;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .materials__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.42rem;
  height: 1px;
  background: var(--amber);
}

.page-contact .workbench__side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-contact .sidecard {
  border: var(--contact-edge);
  background: var(--ink-800);
  padding: clamp(1.05rem, 2.6vw, 1.5rem);
}

.page-contact .sidecard__head {
  margin: 0 0 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-contact .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
  padding: 0.85rem 0;
  border-bottom: var(--contact-edge);
}

.page-contact .contact-line:last-child {
  border-bottom: 0;
  padding-bottom: 0.2rem;
}

.page-contact .contact-line__label {
  flex: 0 0 100%;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .contact-line__value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .copy {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  padding: 0.32rem 0.58rem;
  background: transparent;
  color: var(--amber);
  border: 1px solid var(--wire);
  cursor: pointer;
  transition: border-color var(--ease), color var(--ease), background var(--ease);
}

.page-contact .copy:hover,
.page-contact .copy:focus-visible {
  border-color: var(--amber);
  background: rgba(244, 183, 64, 0.1);
}

.page-contact .copy__state {
  margin-left: 0.35rem;
  color: var(--lime);
}

.page-contact .sidecard--note {
  background: transparent;
}

.page-contact .sidecard__note-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--paper);
}

.page-contact .sidecard__note-text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .sidecard__note-text a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
}

.page-contact .sidecard__note-text a:hover,
.page-contact .sidecard__note-text a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 响应节奏色带 ---------- */

.page-contact .cadence {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  padding: clamp(1.9rem, 5vw, 3.4rem) 0;
  border-top: 1px solid rgba(247, 250, 255, 0.2);
  border-bottom: 1px solid rgba(247, 250, 255, 0.2);
  color: var(--paper);
}

.page-contact .cadence .section__title {
  color: var(--paper);
}

.page-contact .cadence .eyebrow {
  color: var(--amber);
}

.page-contact .cadence__lead {
  margin: 0.9rem 0 0;
  max-width: 62ch;
  font-size: 0.93rem;
  line-height: 1.85;
  color: rgba(247, 250, 255, 0.82);
}

.page-contact .cadence__grid {
  display: grid;
  gap: 1px;
  margin-top: 1.6rem;
  background: rgba(247, 250, 255, 0.22);
  border: 1px solid rgba(247, 250, 255, 0.22);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .cadence__item {
  background: var(--wine);
  padding: 1.15rem 1.1rem;
}

.page-contact .cadence__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 3.4vw, 1.85rem);
  letter-spacing: -0.01em;
  color: var(--amber);
}

.page-contact .cadence__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(247, 250, 255, 0.84);
}

/* ---------- 处理流程 ---------- */

.page-contact .flow {
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .flow__body {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
}

.page-contact .flow__scale {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 0.4rem;
}

.page-contact .flow__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--wire);
  border: var(--contact-edge);
}

.page-contact .flow__step {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1rem 1.05rem;
  background: var(--ink-900);
  text-decoration: none;
  color: inherit;
  transition: background var(--ease), box-shadow var(--ease);
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-visible {
  background: var(--ink-800);
  box-shadow: inset 3px 0 0 var(--amber);
  outline: none;
}

.page-contact .flow__node {
  flex: 0 0 auto;
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--amber);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
}

.page-contact .flow__text {
  display: block;
  min-width: 0;
}

.page-contact .flow__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--paper);
}

.page-contact .flow__desc {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .flow__media {
  margin: 0;
  border: var(--contact-edge);
  padding: 0.55rem;
  background: var(--ink-800);
}

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

.page-contact .flow__media figcaption {
  margin-top: 0.55rem;
  padding-top: 0.5rem;
  border-top: var(--contact-edge);
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 提交前小检查 ---------- */

.page-contact .precheck {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  padding: clamp(1.9rem, 5vw, 3.4rem) 0;
  background: var(--sand);
  color: var(--ink-900);
}

.page-contact .precheck .eyebrow {
  color: var(--wine);
}

.page-contact .precheck .section__title {
  color: var(--ink-900);
}

.page-contact .precheck__inner {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-contact .precheck__lead {
  margin: 0.85rem 0 0;
  max-width: 46ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--ink-800);
}

.page-contact .checks {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .checks__item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-800);
}

.page-contact .checks__box {
  position: relative;
  flex: 0 0 auto;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.2rem;
  border: 1px solid var(--wire);
  background: transparent;
}

.page-contact .checks__box::after {
  content: "";
  position: absolute;
  left: 0.3rem;
  top: 0.08rem;
  width: 0.28rem;
  height: 0.55rem;
  border-right: 2px solid var(--sapphire);
  border-bottom: 2px solid var(--sapphire);
  transform: rotate(42deg);
}

.page-contact .precheck__links {
  display: grid;
  gap: 0;
  align-content: start;
  border-top: 1px solid rgba(44, 74, 107, 0.45);
}

.page-contact .checklink {
  display: block;
  padding: 0.9rem 0.2rem;
  border-bottom: 1px solid rgba(44, 74, 107, 0.45);
  text-decoration: none;
  color: var(--ink-900);
  transition: padding-left var(--ease), border-color var(--ease);
}

.page-contact .checklink:hover,
.page-contact .checklink:focus-visible {
  padding-left: 0.65rem;
  border-bottom-color: var(--sapphire);
  outline: none;
}

.page-contact .checklink__t {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  color: var(--ink-900);
}

.page-contact .checklink__d {
  display: block;
  margin-top: 0.22rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--ink-800);
  opacity: 0.82;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .picker {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .ledger__row {
    grid-template-columns: minmax(7rem, 0.3fr) minmax(0, 1fr);
    gap: 1.2rem;
    align-items: baseline;
  }

  .page-contact .ledger__key {
    padding-top: 0.2rem;
  }
}

@media (min-width: 900px) {
  .page-contact .desk {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-contact .flow__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .precheck__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .workbench {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
    align-items: start;
  }

  .page-contact .workbench__side {
    position: sticky;
    top: 6.5rem;
  }
}

@media (min-width: 1080px) {
  .page-contact .picker {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>