.page-contact {
  --contact-panel: linear-gradient(160deg, rgba(16, 26, 60, 0.92), rgba(9, 15, 36, 0.88));
  --contact-line: rgba(154, 168, 199, 0.16);
  position: relative;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: -140px 0 auto 0;
  height: 560px;
  background:
    radial-gradient(48% 62% at 20% 20%, rgba(45, 212, 191, 0.14), transparent 70%),
    radial-gradient(42% 58% at 82% 4%, rgba(255, 159, 67, 0.12), transparent 74%);
  pointer-events: none;
  z-index: 0;
}

.page-contact > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-crumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-mast {
  padding: clamp(20px, 3.4vw, 36px) 0 clamp(28px, 4.6vw, 56px);
}

.page-contact .contact-mast__rail {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-mast__rail-num {
  color: var(--c-teal);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-contact .contact-mast__rail-text {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--c-dust);
  letter-spacing: 0.04em;
}

.page-contact .contact-mast__rail-dots {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.page-contact .contact-mast__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  align-items: center;
}

.page-contact .contact-mast h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 64px);
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--c-snow);
  margin: 10px 0 16px;
}

.page-contact .contact-mast__lede {
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.75;
  color: var(--c-dust);
  max-width: 46ch;
  margin: 0 0 22px;
}

.page-contact .contact-mast__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .contact-mast__media {
  margin: 0;
  position: relative;
}

.page-contact .contact-mast__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-soft);
  filter: saturate(1.05);
}

.page-contact .contact-mast__media figcaption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-mist);
  letter-spacing: 0.03em;
}

/* ---------- 分屏骨架 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

/* ---------- 左侧渠道区 ---------- */
.page-contact .contact-rail {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-l);
  border: 1px solid var(--contact-line);
  background: var(--contact-panel);
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .channel {
  position: relative;
  padding: 16px 18px 16px 20px;
  border-radius: var(--radius-m);
  background: rgba(7, 13, 31, 0.55);
  border: 1px solid var(--line-faint);
  overflow: hidden;
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--c-teal), rgba(45, 212, 191, 0));
}

.page-contact .channel--mail::before {
  background: linear-gradient(180deg, var(--c-ember), rgba(255, 159, 67, 0));
}

.page-contact .channel--addr::before {
  background: linear-gradient(180deg, var(--c-flag-blue), rgba(76, 141, 255, 0));
}

.page-contact .channel:hover {
  border-color: rgba(45, 212, 191, 0.36);
  background: rgba(16, 26, 60, 0.72);
}

.page-contact .channel__label {
  display: block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-mist);
  margin-bottom: 6px;
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-snow);
  text-decoration: none;
  word-break: break-word;
  overflow-wrap: anywhere;
  user-select: all;
  transition: color 160ms var(--ease);
}

.page-contact .channel__value--static {
  user-select: text;
  font-family: var(--font-body);
  font-size: clamp(15px, 2vw, 17px);
  font-weight: 500;
  line-height: 1.6;
}

.page-contact a.channel__value:hover {
  color: var(--c-teal);
}

.page-contact .channel__hint {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-contact .channel__value:focus-visible,
.page-contact .contact-rail .btn:focus-visible {
  outline: 2px solid var(--c-teal);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-contact .contact-rail__index {
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
}

.page-contact .contact-rail__index .toc__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .contact-rail__index .toc__link {
  display: block;
  padding: 7px 0 7px 14px;
  position: relative;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-dust);
  text-decoration: none;
  transition: color 140ms var(--ease);
}

.page-contact .contact-rail__index .toc__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 1px;
  background: var(--c-mist);
  transform: translateY(-50%);
}

.page-contact .contact-rail__index .toc__link:hover,
.page-contact .contact-rail__index .toc__link:focus-visible,
.page-contact .contact-rail__index .toc__link[aria-current="true"] {
  color: var(--c-teal);
}

.page-contact .contact-rail__index .toc__link[aria-current="true"]::before {
  background: var(--c-teal);
  width: 12px;
}

/* ---------- 右侧内容流 ---------- */
.page-contact .contact-flow {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
}

.page-contact .flow-block {
  scroll-margin-top: 96px;
}

.page-contact .flow-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  margin-bottom: 12px;
}

.page-contact .flow-block__num {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-ember);
}

.page-contact .flow-block h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.1vw, 30px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-snow);
  margin: 0;
}

.page-contact .flow-block__lede {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-dust);
  margin: 0 0 20px;
}

/* 咨询前准备 */
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .prep-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-faint);
  background: rgba(16, 26, 60, 0.42);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .prep-list__item:hover {
  border-color: rgba(45, 212, 191, 0.32);
  transform: translateY(-2px);
}

.page-contact .prep-list__num {
  font-size: 13px;
  color: var(--c-teal);
  letter-spacing: 0.06em;
  padding-top: 3px;
}

.page-contact .prep-list__body h3 {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-snow);
  margin: 0 0 6px;
}

.page-contact .prep-list__body p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-dust);
  margin: 0;
}

/* 服务时间 */
.page-contact .hours {
  display: grid;
  gap: 14px;
  padding: clamp(18px, 3vw, 26px);
  border-radius: var(--radius-l);
  border: 1px solid var(--contact-line);
  background: linear-gradient(120deg, rgba(45, 212, 191, 0.09), rgba(16, 26, 60, 0.86) 42%, rgba(255, 159, 67, 0.08));
}

.page-contact .hours__main {
  display: grid;
  gap: 4px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .hours__label {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-dust);
}

.page-contact .hours__value {
  font-size: clamp(30px, 5.4vw, 46px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-teal);
  letter-spacing: -0.01em;
}

.page-contact .hours__note {
  font-size: 13px;
  color: var(--c-mist);
}

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

.page-contact .hours__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-dust);
}

.page-contact .hours__item .flag-dot {
  margin-top: 8px;
}

.page-contact .hours__item strong {
  color: var(--c-snow);
  font-weight: 600;
}

/* 地址与备案 */
.page-contact .addr {
  display: grid;
  gap: 16px;
}

.page-contact .addr__list {
  margin: 0;
  display: grid;
  gap: 1px;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line-faint);
  background: var(--line-faint);
}

.page-contact .addr__row {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(7, 13, 31, 0.72);
}

.page-contact .addr__term {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

.page-contact .addr__desc {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--c-snow);
}

.page-contact .addr__desc--mono {
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--c-ember);
  overflow-wrap: anywhere;
}

.page-contact .addr__aside {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
  padding-left: 14px;
  border-left: 2px solid rgba(76, 141, 255, 0.5);
  margin: 0;
}

/* 合作方向 */
.page-contact .partner__media {
  margin: 0 0 18px;
}

.page-contact .partner__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-soft);
}

.page-contact .partner__media figcaption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--c-mist);
}

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

.page-contact .partner__item {
  padding: 16px 18px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-faint);
  background: rgba(16, 26, 60, 0.4);
}

.page-contact .partner__item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-snow);
  margin: 0 0 6px;
}

.page-contact .partner__item p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-dust);
  margin: 0;
}

.page-contact .partner__note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
  margin: 0;
}

/* ---------- 常见场景 ---------- */
.page-contact .contact-scenarios {
  margin-top: clamp(48px, 7vw, 88px);
  padding-top: clamp(34px, 5vw, 52px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 96px;
}

.page-contact .contact-scenarios h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--c-snow);
  margin: 8px 0 12px;
}

.page-contact .contact-scenarios__lede {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-dust);
  max-width: 60ch;
  margin: 0;
}

.page-contact .scenarios {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-contact .scenario {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 20px;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-faint);
  background: rgba(16, 26, 60, 0.5);
  text-decoration: none;
  color: inherit;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .scenario:hover,
.page-contact .scenario:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(45, 212, 191, 0.42);
  background: rgba(16, 26, 60, 0.82);
}

.page-contact .scenario:focus-visible {
  outline: 2px solid var(--c-teal);
  outline-offset: 3px;
}

.page-contact .scenario__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-snow);
  margin: 0;
}

.page-contact .scenario__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-dust);
  margin: 0;
}

.page-contact .scenario__more {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--c-teal);
}

.page-contact .scenario__more::after {
  content: " →";
}

/* ---------- 结尾 ---------- */
.page-contact .contact-tail {
  margin-top: clamp(44px, 6vw, 76px);
}

.page-contact .contact-tail__inner {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3.6vw, 36px);
  border-radius: var(--radius-l);
  border: 1px solid rgba(45, 212, 191, 0.26);
  background: linear-gradient(140deg, rgba(45, 212, 191, 0.12), rgba(10, 17, 40, 0.92) 58%, rgba(255, 159, 67, 0.1));
}

.page-contact .contact-tail h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--c-snow);
  margin: 0 0 10px;
}

.page-contact .contact-tail__copy p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-dust);
  margin: 0;
  max-width: 58ch;
}

.page-contact .contact-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .scenarios {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .scenario:nth-child(even) {
    margin-top: 18px;
  }

  .page-contact .partner__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .partner__item:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-mast__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .addr__row {
    grid-template-columns: 116px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

  .page-contact .contact-tail__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: clamp(20px, 4vw, 44px);
  }

  .page-contact .contact-tail__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
  }

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

  .page-contact .partner__item:first-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .scenario,
  .page-contact .prep-list__item,
  .page-contact .channel {
    transition: none;
  }

  .page-contact .scenario:hover,
  .page-contact .scenario:focus-visible,
  .page-contact .prep-list__item:hover {
    transform: none;
  }
}