.page-contact {
  --pc-pad: clamp(20px, 2.6vw, 32px);
  --pc-gap: clamp(16px, 2.4vw, 28px);
  --pc-line: 1px solid var(--slate-700);
  --pc-line-strong: 1px solid var(--slate-600);
  --pc-section: clamp(56px, 8vw, 112px);
}

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

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  padding-top: clamp(20px, 3.5vw, 36px);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fog-500);
}

.page-contact .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  color: var(--slate-600);
}

.page-contact .breadcrumbs a {
  color: var(--fog-500);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

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

.page-contact .breadcrumbs [aria-current="page"] {
  color: var(--fog-200);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(30px, 5vw, 60px) clamp(42px, 6vw, 84px);
  border-bottom: var(--pc-line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -46%;
  right: -14%;
  width: min(640px, 78vw);
  aspect-ratio: 1 / 1;
  background-color: var(--ink-900);
  clip-path: polygon(14% 0, 100% 11%, 86% 100%, 0 82%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: clamp(18px, 6vw, 92px);
  bottom: clamp(18px, 4vw, 46px);
  width: 2px;
  height: clamp(40px, 8vw, 92px);
  background-color: var(--signal-green);
  opacity: 0.85;
  pointer-events: none;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--fog-500);
  margin: 0;
}

.page-contact .contact-hero__title {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 68px);
  font-weight: 200;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper-050);
}

.page-contact .contact-hero__lede {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--fog-200);
}

.page-contact .contact-hero__stamp {
  display: inline-block;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 8px 14px;
  border: var(--pc-line-strong);
  background-color: rgba(18, 26, 40, 0.55);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--fog-500);
}

/* ---------- 通用区块 ---------- */
.page-contact .section {
  padding-block: var(--pc-section);
}

.page-contact .section-index {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-green);
}

.page-contact h2 {
  margin: 0;
  font-size: clamp(23px, 3.3vw, 38px);
  font-weight: 300;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--paper-050);
}

.page-contact h3 {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 400;
  line-height: 1.45;
  color: var(--paper-050);
}

.page-contact .lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: var(--fog-200);
}

/* ---------- 渠道卡组 ---------- */
.page-contact .channels__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
}

.page-contact .channels__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background-color: var(--slate-600);
  border: var(--pc-line-strong);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: var(--pc-pad);
  background-color: rgba(10, 15, 26, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.page-contact .channel-card__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--fog-500);
}

.page-contact .channel-card__label {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--fog-200);
}

.page-contact .channel-card__value {
  display: block;
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--paper-050);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
  transition: color var(--dur) var(--ease);
}

.page-contact .channel-card__value--mail {
  font-size: clamp(13.5px, 1.1vw, 16px);
  letter-spacing: -0.01em;
}

.page-contact .channel-card__value--tel {
  font-size: clamp(23px, 2.6vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--signal-green);
}

.page-contact .channel-card__value--addr {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0;
}

.page-contact a.channel-card__value:hover,
.page-contact a.channel-card__value:focus-visible {
  color: var(--signal-green);
}

.page-contact a.channel-card__value--tel:hover,
.page-contact a.channel-card__value--tel:focus-visible {
  color: var(--paper-050);
}

.page-contact .channel-card__note {
  margin: auto 0 0;
  padding-top: 10px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--fog-500);
}

.page-contact .channels__figure {
  margin: 0;
  border: var(--pc-line-strong);
  background-color: var(--ink-900);
  overflow: hidden;
}

.page-contact .channels__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.05);
}

/* ---------- 边界说明 ---------- */
.page-contact .boundaries__head {
  max-width: 68ch;
}

.page-contact .boundaries__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-contact .boundary {
  padding: clamp(22px, 2.6vw, 30px);
  border: var(--pc-line);
  border-left: 2px solid var(--signal-green);
  background-color: var(--ink-900);
}

.page-contact .boundary--off {
  border-left-color: var(--amber-400);
}

.page-contact .boundary__list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .boundary__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--fog-200);
}

.page-contact .boundary__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background-color: var(--fog-500);
}

.page-contact .boundary--off .boundary__list li::before {
  background-color: var(--amber-400);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .checklist__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 54px);
}

.page-contact .checklist__figure {
  margin: 0;
  border: var(--pc-line-strong);
  background-color: var(--ink-900);
  overflow: hidden;
}

.page-contact .checklist__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.03);
}

.page-contact .checklist__lede {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog-200);
}

.page-contact .checklist__items {
  display: grid;
  gap: 1px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  background-color: var(--slate-700);
  border: var(--pc-line);
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(15px, 1.9vw, 21px);
  background-color: var(--ink-900);
}

.page-contact .check-item__box {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--slate-600);
}

.page-contact .check-item__box::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 10px;
  height: 10px;
  background-color: var(--green-deep);
  opacity: 0.55;
}

.page-contact .check-item__title {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper-050);
}

.page-contact .check-item__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--fog-500);
}

/* ---------- 分类分段切换 ---------- */
.page-contact .routes__tabs {
  margin-top: clamp(26px, 3.4vw, 44px);
}

.page-contact .routes__tablist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  padding: 0;
  background-color: var(--slate-700);
  border: var(--pc-line);
}

.page-contact .routes__tab {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 15px 16px;
  border: 0;
  border-radius: 0;
  background-color: var(--ink-900);
  color: var(--fog-200);
  font-family: var(--font-body);
  font-size: 14.5px;
  letter-spacing: 0.02em;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .routes__tab .tab-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fog-500);
  transition: color var(--dur) var(--ease);
}

.page-contact .routes__tab:hover {
  color: var(--paper-050);
  background-color: var(--ink-800);
}

.page-contact .routes__tab[aria-selected="true"] {
  background-color: var(--ink-800);
  color: var(--paper-050);
  box-shadow: inset 0 -2px 0 var(--signal-green);
}

.page-contact .routes__tab[aria-selected="true"] .tab-num {
  color: var(--signal-green);
}

.page-contact .routes__tab:focus-visible {
  outline: 2px solid var(--signal-green);
  outline-offset: -2px;
}

.page-contact .routes__panel {
  margin-top: -1px;
  padding: clamp(24px, 3vw, 40px);
  border: var(--pc-line);
  background-color: var(--ink-900);
}

.page-contact .routes__panel[hidden] {
  display: none;
}

.page-contact .routes__panel:focus-visible {
  outline: 2px solid var(--signal-green);
  outline-offset: -2px;
}

.page-contact .routes__panel p {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog-200);
}

.page-contact .panel__points {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .panel__points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--fog-500);
}

.page-contact .panel__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 7px;
  height: 1px;
  background-color: var(--green-deep);
}

.page-contact .panel__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  margin-top: 22px;
  padding: 0 18px;
  border: 1px solid var(--slate-600);
  color: var(--paper-050);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .panel__link::after {
  content: "→";
  color: var(--signal-green);
}

.page-contact .panel__link:hover,
.page-contact .panel__link:focus-visible {
  border-color: var(--signal-green);
  color: var(--signal-green);
}

/* ---------- 信息整理与草稿 ---------- */
.page-contact .draft__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 54px);
}

.page-contact .draft__intro p {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--fog-200);
}

.page-contact .draft__alert {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--amber-400);
  background-color: rgba(255, 147, 48, 0.07);
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--fog-200);
}

.page-contact .draft__fields {
  display: grid;
  gap: 14px;
  padding: var(--pc-pad);
  border: var(--pc-line-strong);
  background-color: var(--ink-800);
}

.page-contact .field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.page-contact .field__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--fog-500);
}

.page-contact .field__input {
  box-sizing: border-box;
  width: 100%;
  min-height: 44px;
  padding: 11px 13px;
  border: 1px solid var(--slate-600);
  border-radius: var(--radius);
  background-color: var(--ink-950);
  color: var(--paper-050);
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.6;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .field__input::placeholder {
  color: var(--fog-500);
  opacity: 0.85;
}

.page-contact .field__input:focus-visible {
  outline: 2px solid var(--signal-green);
  outline-offset: 1px;
  border-color: var(--signal-green);
}

.page-contact .draft__template {
  margin-top: clamp(28px, 3.6vw, 48px);
  border: var(--pc-line-strong);
  background-color: var(--ink-900);
}

.page-contact .draft__template-title {
  margin: 0;
  padding: 14px 20px;
  border-bottom: var(--pc-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--signal-green);
}

.page-contact .draft__template pre {
  margin: 0;
  padding: clamp(18px, 2.4vw, 28px);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--fog-200);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channels__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .routes__tablist {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-contact .boundaries__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(24px, 3.4vw, 56px);
  }
}

@media (min-width: 900px) {
  .page-contact .draft__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .checklist__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .channels__layout {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 0.32fr);
    align-items: stretch;
  }

  .page-contact .channels__figure {
    aspect-ratio: auto;
    height: 100%;
  }
}

@media (max-width: 719px) {
  .page-contact .contact-hero::before {
    top: -20%;
    right: -34%;
    width: min(420px, 96vw);
    opacity: 0.75;
  }

  .page-contact .contact-hero::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}