.page-contact {
  --contact-cut: 18px;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--fog);
  overflow-x: hidden;
}

.page-contact .contact-inner {
  width: min(100% - 2 * clamp(18px, 4vw, 48px), var(--max));
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-crumbs {
  padding-top: clamp(14px, 3vw, 24px);
  background: var(--mist);
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-contact .breadcrumbs a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

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

.page-contact .crumb-sep {
  color: var(--board);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(22px, 4vw, 40px) clamp(38px, 7vw, 84px);
  background: linear-gradient(158deg, #DCEAF0 0%, var(--mist) 46%, var(--fog) 100%);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  top: -34%;
  width: 66vw;
  height: 66vw;
  max-width: 640px;
  max-height: 640px;
  border-radius: 50%;
  border: 1px solid rgba(31, 138, 122, 0.18);
  box-shadow: inset 0 0 0 46px rgba(216, 165, 74, 0.06);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 5vw, 44px);
  align-items: center;
}

.page-contact .contact-hero__kicker {
  margin: 0 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--jade);
}

.page-contact .contact-hero__kicker::before {
  content: "";
  width: 26px;
  height: 3px;
  background: var(--cinnabar);
  transform: skewX(-18deg);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-size: clamp(38px, 8.4vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .contact-hero__title span {
  display: inline-block;
  color: var(--jade);
  box-shadow: inset 0 -0.14em 0 rgba(216, 165, 74, 0.55);
}

.page-contact .contact-hero__lede {
  margin: clamp(16px, 3vw, 24px) 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: #2C4A4F;
}

.page-contact .contact-chips {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .contact-chip {
  padding: 6px 12px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--night);
  background: rgba(244, 248, 247, 0.85);
  border: 1px solid rgba(31, 138, 122, 0.28);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.page-contact .contact-hero__media {
  margin: 0;
  position: relative;
  transform: rotate(-1.2deg);
  clip-path: polygon(0 22px, 22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
  background: var(--board);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 合作方向 + 联系卡 ---------- */
.page-contact .contact-board {
  padding-block: clamp(34px, 6vw, 76px);
  background: var(--fog);
}

.page-contact .contact-board__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-contact .contact-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: clamp(18px, 3vw, 26px);
  border-bottom: 1px solid var(--board);
}

.page-contact .contact-head .num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--jade);
}

.page-contact .contact-head h2 {
  margin: 0;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .contact-head p {
  grid-column: 1 / -1;
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .partner-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .partner-card {
  position: relative;
  padding: 20px 18px 18px;
  background: #FBFDFC;
  border: 1px solid var(--board);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-contact .partner-card:hover,
.page-contact .partner-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  background: #FFFFFF;
}

.page-contact .partner-card__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 22px;
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: #4A3608;
  background: var(--glow);
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
}

.page-contact .partner-card__title {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .partner-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #33535A;
}

.page-contact .partner-card__fit {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--board);
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-contact .partner-card__fit span {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--jade);
  border: 1px solid rgba(31, 138, 122, 0.4);
}

.page-contact .reach-card {
  position: relative;
  padding: clamp(22px, 4vw, 30px);
  background: linear-gradient(158deg, var(--night) 0%, #17333D 100%);
  color: var(--fog);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-contact .reach-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 4px;
  height: 46px;
  background: var(--cinnabar);
}

.page-contact .reach-card__title {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-contact .reach-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .reach-item {
  padding-top: 14px;
  border-top: 1px solid rgba(244, 248, 247, 0.16);
}

.page-contact .reach-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .reach-item__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .reach-item__value {
  display: block;
  margin-top: 6px;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.5;
  color: var(--fog);
  overflow-wrap: anywhere;
}

.page-contact .reach-item__value--mono {
  font-family: var(--font-mono);
  font-size: clamp(13px, 2vw, 15.5px);
  letter-spacing: 0.01em;
}

.page-contact .reach-card__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(244, 248, 247, 0.24);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 248, 247, 0.76);
}

/* ---------- 来信建议 ---------- */
.page-contact .contact-mail {
  padding-block: clamp(34px, 6vw, 76px);
  background: linear-gradient(180deg, var(--mist) 0%, #E6F0EF 100%);
}

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

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

.page-contact .mail-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15.5px;
  line-height: 1.78;
  color: #2C4A4F;
}

.page-contact .mail-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 10px;
  width: 11px;
  height: 11px;
  background: var(--jade);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-contact .mail-template {
  margin-top: clamp(20px, 3vw, 28px);
  background: #FBFDFC;
  border: 1px solid var(--board);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-contact .mail-template > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--jade);
}

.page-contact .mail-template > summary::-webkit-details-marker {
  display: none;
}

.page-contact .mail-template > summary::after {
  content: "＋";
  font-size: 15px;
  color: var(--gold);
}

.page-contact .mail-template[open] > summary::after {
  content: "－";
}

.page-contact .mail-template > summary:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: -2px;
}

.page-contact .mail-template__body {
  padding: 14px 18px 20px;
  border-top: 1px dashed var(--board);
}

.page-contact .mail-sample {
  margin: 0 0 10px;
  padding: 10px 14px;
  background: var(--glow);
  color: #3B2E12;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-contact .mail-sample__label {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: #8A6A1E;
}

.page-contact .mail-points {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .mail-points li::marker {
  color: var(--jade);
}

.page-contact .contact-shot {
  margin: 0;
}

.page-contact .contact-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-contact .contact-shot__cap {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 合作流程 ---------- */
.page-contact .flow-band {
  padding-block: clamp(34px, 6vw, 78px);
  background: linear-gradient(160deg, var(--night) 0%, #142E38 100%);
  color: var(--fog);
}

.page-contact .flow-band .contact-head {
  border-bottom-color: rgba(244, 248, 247, 0.2);
}

.page-contact .flow-band .contact-head .num {
  color: var(--gold);
}

.page-contact .flow-band .contact-head h2 {
  color: var(--fog);
}

.page-contact .flow-band .contact-head p {
  color: rgba(244, 248, 247, 0.74);
}

.page-contact .flow-wrap {
  position: relative;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .flow-arc {
  display: none;
}

.page-contact .flow-track {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .flow-step {
  padding: 18px 18px 20px;
  background: rgba(244, 248, 247, 0.06);
  border: 1px solid rgba(244, 248, 247, 0.18);
  border-left: 3px solid var(--gold);
}

.page-contact .flow-step__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .flow-step__title {
  margin: 6px 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--fog);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 248, 247, 0.78);
}

/* ---------- 常见咨询入口 ---------- */
.page-contact .help-band {
  padding-block: clamp(34px, 6vw, 78px);
  background: var(--mist);
}

.page-contact .help-grid {
  display: grid;
  gap: 12px;
}

.page-contact .help-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 6px 14px;
  padding: 18px 20px;
  background: var(--fog);
  border: 1px solid var(--board);
  border-left: 4px solid var(--jade);
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-contact .help-card:hover,
.page-contact .help-card:focus-visible {
  transform: translateX(3px);
  border-left-color: var(--cinnabar);
  background: #FDFFFE;
  outline: none;
}

.page-contact .help-card:focus-visible {
  outline: 2px solid var(--jade);
  outline-offset: 2px;
}

.page-contact .help-card__title {
  grid-column: 1;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .help-card__arrow {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--jade);
}

.page-contact .help-card__text {
  grid-column: 1 / -1;
  margin: 0;
  font-size: 13.8px;
  line-height: 1.68;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-contact .contact-hero__media {
    transform: rotate(-1.6deg) translateY(-10px);
  }

  .page-contact .contact-mail__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .contact-shot {
    margin-top: 32px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-board__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .contact-board__side {
    position: sticky;
    top: 32px;
  }
}

@media (min-width: 860px) {
  .page-contact .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .flow-arc {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: -14px;
    width: 100%;
    height: 118px;
    z-index: 0;
    pointer-events: none;
  }

  .page-contact .flow-step {
    padding-top: 44px;
    background: linear-gradient(180deg, rgba(244, 248, 247, 0.1), rgba(244, 248, 247, 0.04));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .partner-card,
  .page-contact .help-card {
    transition: none;
  }

  .page-contact .partner-card:hover,
  .page-contact .partner-card:focus-within,
  .page-contact .help-card:hover,
  .page-contact .help-card:focus-visible {
    transform: none;
  }
}