.page-contact {
  --contact-gap: clamp(16px, 2.4vw, 22px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact > section:not(.contact-hero) {
  padding-block: clamp(40px, 6.4vw, 78px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  margin-top: calc(-1 * var(--header-h));
  padding: calc(var(--header-h) + clamp(20px, 4vw, 40px)) 0 clamp(36px, 6vw, 68px);
  background:
    radial-gradient(115% 78% at 90% 4%, rgba(23, 224, 200, .17), transparent 62%),
    radial-gradient(85% 68% at -4% 14%, rgba(255, 106, 31, .20), transparent 64%),
    linear-gradient(158deg, var(--ink-blue) 12%, var(--steel-blue) 88%);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -34%;
  width: 58%;
  aspect-ratio: 1 / 1;
  border-radius: 46% 54% 38% 62% / 52% 42% 58% 48%;
  background: linear-gradient(140deg, rgba(23, 224, 200, .16), rgba(23, 224, 200, 0) 68%);
  pointer-events: none;
}

.page-contact .contact-hero .breadcrumb {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--neutral-blue);
}

.page-contact .contact-hero .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--edge-blue);
}

.page-contact .contact-hero .breadcrumb__list a {
  color: var(--neutral-blue);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumb__list a:hover {
  color: var(--amber);
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(16px, 3vw, 28px);
}

.page-contact .contact-hero__eyebrow {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-contact .contact-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(31px, 6.2vw, 54px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: .008em;
  color: var(--mist-white);
  text-wrap: balance;
}

.page-contact .contact-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(16px, 1.7vw, 17.5px);
  line-height: 1.75;
  color: rgba(242, 245, 249, .82);
}

.page-contact .contact-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--edge-blue);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-float);
}

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

/* ---------- 三色事项卡 ---------- */

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

.page-contact .case-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px;
  background: var(--steel-blue);
  border: 1px solid var(--edge-blue);
  border-top: 3px solid var(--neutral-blue);
  border-radius: var(--radius-m);
}

.page-contact .case-card--lineup { border-top-color: var(--signal-orange); }
.page-contact .case-card--v4 { border-top-color: var(--neon-cyan); }
.page-contact .case-card--help { border-top-color: var(--neutral-blue); }

.page-contact .case-card .tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  padding: 4px 11px;
  border-radius: 999px;
}

.page-contact .case-card .tag--lineup {
  color: var(--amber);
  background: rgba(255, 106, 31, .16);
}

.page-contact .case-card .tag--v4 {
  color: var(--neon-cyan);
  background: rgba(23, 224, 200, .14);
}

.page-contact .case-card .tag--help {
  color: var(--mist-white);
  background: rgba(143, 163, 188, .18);
}

.page-contact .case-card__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(19px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.32;
  color: var(--mist-white);
}

.page-contact .case-card__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(242, 245, 249, .76);
}

.page-contact .case-card__more {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--edge-blue);
}

.page-contact .case-card__more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--amber);
}

.page-contact .case-card__more summary::-webkit-details-marker { display: none; }

.page-contact .case-card__more summary::after {
  content: "＋";
  font-size: 15px;
  line-height: 1;
  color: var(--neutral-blue);
  transition: transform var(--dur) var(--ease);
}

.page-contact .case-card__more[open] summary::after {
  content: "－";
  color: var(--signal-orange);
}

.page-contact .case-card__more summary:hover { color: var(--mist-white); }

.page-contact .case-card__list {
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .case-card__list li {
  position: relative;
  padding-left: 15px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--neutral-blue);
}

.page-contact .case-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: currentColor;
  opacity: .85;
}

/* ---------- 联系方式 ---------- */

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

.page-contact .channel-card {
  display: grid;
  gap: 10px;
  padding: 26px 24px;
  border: 1px solid var(--edge-blue);
  border-radius: var(--radius-m);
  background: linear-gradient(152deg, rgba(143, 163, 188, .12), rgba(11, 26, 46, 0) 70%), var(--steel-blue);
}

.page-contact .channel-card--mail {
  background: linear-gradient(152deg, rgba(255, 106, 31, .14), rgba(11, 26, 46, 0) 72%), var(--steel-blue);
}

.page-contact .channel-card--phone {
  background: linear-gradient(152deg, rgba(23, 224, 200, .13), rgba(11, 26, 46, 0) 72%), var(--steel-blue);
}

.page-contact .channel-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--edge-blue);
  color: var(--inner-accent, var(--signal-orange));
  background: rgba(11, 26, 46, .55);
}

.page-contact .channel-card--mail { --inner-accent: var(--signal-orange); }
.page-contact .channel-card--phone { --inner-accent: var(--neon-cyan); }

.page-contact .channel-card__label {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--neutral-blue);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.6vw, 19px);
  line-height: 1.5;
  color: var(--mist-white);
  word-break: break-all;
}

.page-contact .channel-card .copy-btn {
  justify-self: start;
  margin-top: 6px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist-white);
  background: rgba(242, 245, 249, .06);
  border: 1px solid var(--edge-blue);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .channel-card .copy-btn:hover {
  border-color: var(--signal-orange);
  background: rgba(255, 106, 31, .16);
}

.page-contact .channel-card .copy-btn:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

.page-contact .contact-channels__note {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--neutral-blue);
}

/* ---------- 回复节奏 ---------- */

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

.page-contact .timing-tile {
  padding: 20px 20px 22px;
  border-radius: var(--radius-m);
  border-left: 3px solid var(--signal-orange);
  background: var(--paper-grey);
  color: var(--ink-blue);
}

.page-contact .timing-tile__time {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-blue);
}

.page-contact .timing-tile__label {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: rgba(11, 26, 46, .62);
}

.page-contact .timing-tile__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(11, 26, 46, .82);
}

.page-contact .contact-timing__panel {
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(22px, 3.4vw, 32px);
  border-radius: var(--radius-m);
}

.page-contact .contact-timing__panel-title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 600;
  color: var(--mist-white);
}

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

.page-contact .checklist li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(242, 245, 249, .8);
}

.page-contact .checklist li::before {
  content: "";
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: .32em;
  border: 1.5px solid var(--neon-cyan);
  border-radius: 4px;
}

.page-contact .checklist .mono-id {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  background: rgba(23, 224, 200, .14);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 14px;
}

/* ---------- 通信地址 ---------- */

.page-contact .contact-address__shell {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(26px, 4.6vw, 50px);
  border-radius: var(--radius-l);
  background: var(--paper-grey);
  color: var(--ink-blue);
}

.page-contact .contact-address__eyebrow {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: rgba(11, 26, 46, .55);
}

.page-contact .contact-address__text h2 {
  margin: 12px 0 0;
  font-family: var(--font-narrow);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-blue);
}

.page-contact .contact-address__intro {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(11, 26, 46, .78);
}

.page-contact .contact-address__lines {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 20px 0 0;
  padding: 16px 18px;
  border-radius: var(--radius-s);
  background: rgba(11, 26, 46, .06);
  border-left: 3px solid var(--signal-orange);
  font-family: var(--font-mono);
  font-size: clamp(14.5px, 1.9vw, 16.5px);
  font-style: normal;
  line-height: 1.6;
  color: var(--ink-blue);
}

.page-contact .contact-address__icon {
  flex: 0 0 auto;
  color: var(--alert-red);
  margin-top: 2px;
}

.page-contact .contact-address__hint {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(11, 26, 46, .66);
}

.page-contact .contact-address__media {
  margin: 0;
  aspect-ratio: 10 / 7;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid rgba(11, 26, 46, .14);
}

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

/* ---------- 内容合作 ---------- */

.page-contact .theme-band {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  margin-bottom: clamp(24px, 4vw, 38px);
  border-left: 3px solid var(--neon-cyan);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: linear-gradient(90deg, rgba(23, 224, 200, .16), rgba(11, 26, 46, 0) 78%);
}

.page-contact .theme-band__label {
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--neon-cyan);
}

.page-contact .contact-partner__body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .contact-partner__col h2 {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--mist-white);
}

.page-contact .contact-partner__col p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(242, 245, 249, .8);
}

.page-contact .contact-partner__col--aside {
  padding: 24px 22px;
  border: 1px solid var(--edge-blue);
  border-radius: var(--radius-m);
  background: rgba(18, 38, 63, .7);
}

.page-contact .contact-partner__aside-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .partner-list {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .partner-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(242, 245, 249, .78);
}

.page-contact .partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .58em;
  width: 7px;
  height: 1.5px;
  background: var(--neon-cyan);
}

.page-contact .contact-partner__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--neutral-blue);
}

/* ---------- 相关入口 ---------- */

.page-contact .contact-next {
  border-top: 1px solid var(--edge-blue);
}

.page-contact .contact-next h2 {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-family: var(--font-narrow);
  font-size: clamp(21px, 3.2vw, 28px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--mist-white);
}

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

.page-contact .contact-next__link {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--edge-blue);
  border-radius: var(--radius-m);
  background: rgba(18, 38, 63, .5);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .contact-next__link:hover {
  border-color: var(--signal-orange);
  background: rgba(255, 106, 31, .1);
  transform: translateY(-2px);
}

.page-contact .contact-next__link:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 2px;
}

.page-contact .contact-next__link-title {
  font-family: var(--font-narrow);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist-white);
}

.page-contact .contact-next__link-desc {
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--neutral-blue);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }

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

@media (min-width: 840px) {
  .page-contact .contact-cases__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-contact .contact-address__shell {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-contact .contact-partner__body {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-hero__quick .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .page-contact .channel-card__value {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-next__link,
  .page-contact .channel-card .copy-btn,
  .page-contact .case-card__more summary::after {
    transition: none;
  }

  .page-contact .contact-next__link:hover {
    transform: none;
  }
}