.page-contact {
  --pc-line: rgba(27, 78, 115, 0.6);
  --pc-line-soft: rgba(27, 78, 115, 0.34);
  --pc-cut: 28px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(38px, 7vw, 84px);
  overflow: hidden;
  background:
    radial-gradient(820px 460px at 88% 4%, rgba(69, 214, 176, 0.10), transparent 62%),
    radial-gradient(620px 420px at 2% 94%, rgba(255, 107, 74, 0.10), transparent 64%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--coral-500), transparent);
  opacity: 0.45;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-contact .contact-hero__copy .breadcrumb {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-contact .contact-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fog-050);
}

.page-contact .contact-hero .lede {
  margin-top: clamp(14px, 2vw, 20px);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-contact .hero-facts {
  display: grid;
  gap: 10px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px dashed var(--pc-line-soft);
  padding-top: clamp(16px, 2.4vw, 22px);
}

.page-contact .hero-facts__item {
  font-size: var(--fs-200);
  color: var(--fog-200);
}

.page-contact .hero-facts__num {
  font-family: var(--font-mono);
  font-size: var(--fs-500);
  color: var(--coral-500);
  margin-right: 8px;
}

.page-contact .hero-visual {
  position: relative;
  padding: clamp(16px, 3vw, 26px);
  background: linear-gradient(150deg, var(--abyss-800), var(--abyss-900));
  border: 1px solid var(--pc-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), calc(100% - 44px) 100%, 0 100%);
}

.page-contact .hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(27, 78, 115, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 78, 115, 0.22) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-contact .hero-visual__svg {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .hero-visual__svg .ln-coral { stroke: var(--coral-500); opacity: 0.85; }
.page-contact .hero-visual__svg .ln-mint { stroke: var(--mint-400); opacity: 0.7; }
.page-contact .hero-visual__svg .ln-mint-soft { stroke: var(--mint-400); opacity: 0.45; }
.page-contact .hero-visual__svg .ln-fog { stroke: var(--fog-400); opacity: 0.6; }
.page-contact .hero-visual__svg .ln-dash { stroke: var(--coral-300); opacity: 0.7; }
.page-contact .hero-visual__svg .nd-coral { fill: var(--coral-500); }
.page-contact .hero-visual__svg .nd-coral-ring { stroke: var(--coral-500); opacity: 0.35; }
.page-contact .hero-visual__svg .nd-mint { fill: var(--mint-400); }
.page-contact .hero-visual__svg .nd-start { fill: var(--fog-050); }

.page-contact .hero-visual__caption {
  position: relative;
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.04em;
  color: var(--fog-400);
}

/* ---------- 通用小节标题 ---------- */
.page-contact .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--fog-050);
}

.page-contact .text-link {
  color: var(--coral-300);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .text-link:hover {
  color: var(--coral-500);
}

/* ---------- 合作方向 ---------- */
.page-contact .coop {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .coop-index {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .coop-index__item {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--pc-line-soft);
}

.page-contact .coop-index__num {
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.06em;
  color: var(--coral-300);
  flex: none;
  padding-top: 3px;
}

.page-contact .coop-index__label {
  font-size: var(--fs-300);
  color: var(--fog-050);
}

.page-contact .coop-index__meta {
  display: block;
  margin-top: 5px;
  font-size: var(--fs-100);
  color: var(--fog-400);
}

.page-contact .coop-list {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-contact .coop-item {
  padding: clamp(18px, 2.8vw, 30px);
  background: linear-gradient(160deg, rgba(18, 58, 87, 0.72), rgba(6, 23, 38, 0.92));
  border: 1px solid var(--pc-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-contact .coop-item:hover {
  border-color: var(--coral-500);
  transform: translateX(4px);
}

.page-contact .coop-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-contact .coop-item__num {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  color: var(--mint-400);
  letter-spacing: 0.06em;
}

.page-contact .coop-item__title {
  margin: 0;
  font-size: var(--fs-500);
  line-height: 1.3;
  color: var(--fog-050);
}

.page-contact .coop-item__text {
  margin: 12px 0 0;
  font-size: var(--fs-300);
  line-height: 1.75;
  color: var(--fog-200);
  max-width: 62ch;
}

.page-contact .coop-figure {
  margin: clamp(22px, 4vw, 36px) 0 0;
}

.page-contact .coop-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  border: 1px solid var(--pc-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-contact .coop-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.03em;
  color: var(--fog-400);
}

/* ---------- 折叠块 ---------- */
.page-contact .fold {
  margin-top: 14px;
  border-top: 1px dashed var(--pc-line-soft);
}

.page-contact .fold__summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0 6px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.04em;
  color: var(--coral-300);
  transition: color 0.24s var(--ease);
}

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

.page-contact .fold__summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex: none;
  border: 1px solid currentColor;
  font-size: 12px;
  line-height: 1;
}

.page-contact .fold[open] .fold__summary::before {
  content: "−";
}

.page-contact .fold__summary:hover {
  color: var(--coral-500);
}

.page-contact .fold__body {
  padding: 4px 0 14px;
  font-size: var(--fs-300);
  line-height: 1.75;
  color: var(--fog-200);
  max-width: 64ch;
}

/* ---------- 流程 ---------- */
.page-contact .flow {
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow__step {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  background: rgba(18, 58, 87, 0.5);
  border: 1px solid var(--pc-line-soft);
  border-top: 3px solid var(--abyss-600);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: background 0.28s var(--ease), border-top-color 0.28s var(--ease);
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  background: rgba(18, 58, 87, 0.82);
  border-top-color: var(--coral-500);
}

.page-contact .flow__num {
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.08em;
  color: var(--coral-500);
}

.page-contact .flow__title {
  margin: 10px 0 0;
  font-size: var(--fs-500);
  line-height: 1.3;
  color: var(--fog-050);
}

.page-contact .flow__text {
  margin: 10px 0 0;
  font-size: var(--fs-300);
  line-height: 1.72;
  color: var(--fog-200);
}

.page-contact .flow__extra {
  margin: 14px 0 0;
  padding-left: 10px;
  min-height: 1.8em;
  border-left: 2px solid var(--mint-400);
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.03em;
  color: var(--mint-400);
  transition: opacity 0.28s var(--ease);
}

@media (hover: hover) and (min-width: 900px) {
  .page-contact .flow__extra {
    opacity: 0;
  }
  .page-contact .flow__step:hover .flow__extra,
  .page-contact .flow__step:focus-within .flow__extra {
    opacity: 1;
  }
}

/* ---------- 伙伴 ---------- */
.page-contact .partner-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-contact .partner-card {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  background: rgba(10, 36, 57, 0.72);
  border: 1px solid var(--pc-line-soft);
  border-left: 3px solid var(--mint-400);
}

.page-contact .partner-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.14em;
  color: var(--mint-400);
}

.page-contact .partner-card__title {
  margin: 12px 0 0;
  font-size: var(--fs-500);
  line-height: 1.3;
  color: var(--fog-050);
}

.page-contact .partner-card__text {
  margin: 10px 0 0;
  font-size: var(--fs-300);
  line-height: 1.75;
  color: var(--fog-200);
}

.page-contact .partner-note {
  margin: clamp(18px, 2.8vw, 26px) 0 0;
  font-size: var(--fs-300);
  line-height: 1.75;
  color: var(--fog-200);
  padding-left: 14px;
  border-left: 1px dashed var(--pc-line);
}

/* ---------- 批量适配 ---------- */
.page-contact .batch {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-contact .batch__col {
  padding: clamp(18px, 2.6vw, 28px);
  background: rgba(18, 58, 87, 0.45);
  border: 1px solid var(--pc-line-soft);
}

.page-contact .batch__col--alt {
  background: rgba(6, 23, 38, 0.6);
  border-style: dashed;
}

.page-contact .batch__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-200);
  letter-spacing: 0.06em;
  color: var(--coral-300);
}

.page-contact .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .chip {
  font-family: inherit;
  font-size: var(--fs-200);
  line-height: 1.4;
  padding: 8px 14px;
  color: var(--fog-200);
  background: rgba(27, 78, 115, 0.28);
  border: 1px solid var(--pc-line);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.24s var(--ease), color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-contact .chip:hover {
  border-color: var(--coral-500);
  color: var(--fog-050);
}

.page-contact .chip[aria-pressed="true"] {
  background: var(--mint-400);
  border-color: var(--mint-400);
  color: var(--ink-900);
}

.page-contact .batch__hint {
  margin: 16px 0 0;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: var(--fog-400);
}

.page-contact .deliver-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .deliver-list__item {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-300);
  line-height: 1.7;
  color: var(--fog-200);
}

.page-contact .deliver-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 10px;
  height: 2px;
  background: var(--mint-400);
}

/* ---------- 问答 ---------- */
.page-contact .qa-grid {
  display: grid;
  gap: clamp(14px, 2.2vw, 20px);
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-contact .fold--card {
  margin-top: 0;
  padding: clamp(16px, 2.4vw, 24px);
  background: rgba(10, 36, 57, 0.6);
  border: 1px solid var(--pc-line-soft);
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .fold--card .fold__summary {
  padding-top: 0;
  font-family: var(--font-body);
  font-size: var(--fs-400);
  letter-spacing: 0;
  color: var(--fog-050);
}

.page-contact .fold--card .fold__summary:hover {
  color: var(--coral-300);
}

.page-contact .fold--card .fold__body {
  padding-bottom: 0;
}

/* ---------- 联系方式（反白区） ---------- */
.page-contact .contact-ways {
  position: relative;
  background:
    radial-gradient(600px 380px at 96% 100%, rgba(255, 107, 74, 0.14), transparent 62%),
    var(--fog-050);
}

.page-contact .contact-ways .eyebrow {
  color: var(--mint-700);
}

.page-contact .contact-ways .section-title {
  color: var(--ink-900);
}

.page-contact .contact-ways .lede {
  color: rgba(10, 21, 32, 0.72);
}

.page-contact .ways-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(24px, 3.6vw, 36px);
}

.page-contact .way-card {
  position: relative;
  padding: clamp(22px, 2.8vw, 28px);
  background: #ffffff;
  border: 1px solid rgba(10, 21, 32, 0.08);
  clip-path: polygon(30px 0, 100% 0, 100% 100%, 0 100%, 0 30px);
}

.page-contact .way-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  background: var(--coral-500);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.page-contact .way-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.1em;
  color: var(--mint-700);
}

.page-contact .way-card__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-300);
  line-height: 1.5;
  color: var(--ink-900);
  word-break: break-word;
}

.page-contact .way-card__text {
  margin: 10px 0 0;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: rgba(10, 21, 32, 0.66);
}

.page-contact .copy-btn {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.06em;
  padding: 6px 12px;
  color: var(--coral-500);
  background: transparent;
  border: 1px solid rgba(255, 107, 74, 0.55);
  cursor: pointer;
  transition: background 0.24s var(--ease), color 0.24s var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--coral-500);
  border-color: var(--coral-500);
  color: #ffffff;
}

.page-contact .ways-foot {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid rgba(10, 21, 32, 0.12);
}

.page-contact .ways-figure {
  margin: 0;
}

.page-contact .ways-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  border: 1px solid rgba(10, 21, 32, 0.1);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-contact .ways-note__lead {
  margin: 0;
  font-size: var(--fs-400);
  line-height: 1.75;
  color: var(--ink-900);
  font-weight: 600;
}

.page-contact .fold--light {
  border-top-color: rgba(10, 21, 32, 0.16);
}

.page-contact .fold--light .fold__summary {
  color: var(--mint-700);
}

.page-contact .fold--light .fold__summary:hover {
  color: var(--coral-500);
}

.page-contact .fold--light .fold__body {
  color: rgba(10, 21, 32, 0.76);
}

.page-contact .ways-note__legal {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-100);
  letter-spacing: 0.04em;
  color: rgba(10, 21, 32, 0.55);
}

.page-contact .ways-note__link {
  margin: 10px 0 0;
  font-size: var(--fs-200);
  line-height: 1.7;
  color: rgba(10, 21, 32, 0.72);
}

.page-contact .contact-ways .text-link {
  color: #B93B22;
}

.page-contact .contact-ways .text-link:hover {
  color: var(--coral-500);
}

/* ---------- 中屏 ---------- */
@media (min-width: 720px) {
  .page-contact .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

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

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }

  .page-contact .coop {
    grid-template-columns: 268px minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .coop__side {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

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

  .page-contact .flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 40px;
    right: -16px;
    width: 18px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--mint-400) 0 4px, transparent 4px 8px);
    transform: rotate(-26deg);
    opacity: 0.8;
  }

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

  .page-contact .partner-card:nth-child(2) {
    margin-top: 28px;
  }

  .page-contact .partner-card:nth-child(3) {
    margin-top: 56px;
  }

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

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

@media (min-width: 1240px) {
  .page-contact .partner-card:nth-child(3) {
    margin-top: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-item,
  .page-contact .flow__step,
  .page-contact .flow__extra,
  .page-contact .chip,
  .page-contact .copy-btn,
  .page-contact .fold__summary {
    transition: none;
  }
}