.page-contact {
  --pc-cut: 18px;
  background: var(--ink-green);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- Hero ---------- */
.contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 76px) 0 clamp(48px, 8vw, 92px);
  background: var(--ink-green);
}

.contact-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  pointer-events: none;
}

.contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 86% 10%, rgba(12, 27, 51, 0.92), transparent 62%),
    linear-gradient(180deg, rgba(7, 19, 15, 0.42) 0%, rgba(7, 19, 15, 0.88) 58%, var(--ink-green) 100%);
}

.contact-hero__inner {
  position: relative;
  z-index: 1;
}

.contact-hero__kicker {
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.contact-hero__title {
  margin: 16px 0 0;
  max-width: 19ch;
  font-family: var(--sans);
  font-size: clamp(28px, 6.6vw, 60px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.contact-hero__lead {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--chalk);
}

.contact-hero__channels {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  margin-top: 36px;
}

.channel {
  position: relative;
  padding: 20px 26px 24px 20px;
  background: var(--stand-slate);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, calc(100% - var(--pc-cut)) 100%, 0 100%);
  transition: transform 0.28s var(--ease), background-color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.channel--fix {
  border-color: rgba(201, 255, 61, 0.34);
}

.channel--suggest {
  border-color: rgba(210, 84, 60, 0.4);
}

.channel--coop {
  border-color: rgba(242, 245, 236, 0.24);
}

.channel:hover,
.channel:focus-within {
  transform: translateY(-4px);
  background: var(--night-blue);
}

.channel__index {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.channel--suggest .channel__index {
  color: var(--brick);
}

.channel--coop .channel__index {
  color: var(--paper);
}

.channel__title {
  margin: 10px 0 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.channel__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--chalk);
}

.channel__subj {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 1.6;
  color: var(--lime);
  overflow-wrap: anywhere;
}

.channel--suggest .channel__subj {
  color: var(--brick);
}

.channel--coop .channel__subj {
  color: var(--paper);
}

/* ---------- 联络信息版心 ---------- */
.contact-reach {
  background: var(--ink-green);
}

.info-plate {
  padding: clamp(22px, 4vw, 44px);
  background: var(--stand-slate);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.reach-head {
  padding-bottom: 24px;
}

.reach-head__index {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.reach-head__title {
  margin: 12px 0 0;
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.reach-head__note {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--chalk);
}

.info-lines {
  list-style: none;
  margin: 0;
  padding: 0;
}

.info-line {
  display: grid;
  gap: 7px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.info-line__key {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--chalk);
}

.info-line__key::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--lime);
  flex: none;
}

.info-line__val {
  font-family: var(--mono);
  font-size: clamp(14px, 2.6vw, 19px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.info-line--mail .info-line__val {
  font-size: clamp(16px, 3.4vw, 26px);
  color: var(--lime);
}

.info-line__note {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--chalk);
}

/* ---------- 写法 ---------- */
.contact-how {
  background: var(--night-blue);
}

.how-list {
  margin-top: 10px;
  border-bottom: 1px solid var(--line);
}

.how-row {
  display: grid;
  gap: 14px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.how-row__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.how-row__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.how-row__tag {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.how-row__subject {
  display: inline-block;
  margin: 0 0 12px;
  padding: 7px 11px;
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 1.5;
  color: var(--ink-green);
  background: var(--lime);
  overflow-wrap: anywhere;
}

.how-row__body p {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--chalk);
}

.how-row__need {
  list-style: none;
  margin: 0;
  padding: 0;
}

.how-row__need li {
  position: relative;
  margin-bottom: 7px;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--paper);
}

.how-row__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--lime-dim);
}

/* ---------- 回复节奏 ---------- */
.contact-reply {
  background: var(--ink-green);
}

.reply-grid {
  display: grid;
  gap: 16px;
}

.reply-card {
  padding: 22px 20px 24px;
  background: var(--night-blue);
  border-left: 2px solid var(--lime);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.reply-card:hover {
  transform: translateY(-3px);
  border-left-color: var(--brick);
}

.reply-card__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brick);
}

.reply-card__title {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.reply-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--chalk);
}

/* ---------- 坐标 ---------- */
.contact-place {
  background: var(--night-blue);
}

.place {
  display: grid;
  gap: 26px;
}

.place__index {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--lime);
}

.place__title {
  margin: 12px 0 0;
}

.place__para {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--chalk);
}

.place__meta {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--chalk);
}

.place__figure {
  margin: 0;
}

.place__figure .media-frame__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 先看这些 ---------- */
.contact-prep {
  background: var(--ink-green);
}

.prep-links {
  display: grid;
  gap: 14px;
}

.prep-link {
  display: grid;
  gap: 6px;
  padding: 20px 20px 20px 18px;
  text-decoration: none;
  background: transparent;
  border: 1px solid var(--line);
  border-left: 1px solid var(--line-strong);
  transition: transform 0.24s var(--ease), background-color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.prep-link:hover,
.prep-link:focus-visible {
  transform: translateY(-3px);
  background: var(--stand-slate);
  border-color: var(--lime-line);
}

.prep-link__no {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.prep-link__title {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.prep-link__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--chalk);
}

.prep-link__go {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brick);
}

/* ---------- 结尾大邮箱 ---------- */
.contact-signoff {
  padding: clamp(46px, 9vw, 96px) 0 clamp(54px, 10vw, 110px);
  background: linear-gradient(180deg, var(--ink-green) 0%, var(--stand-slate) 100%);
  border-top: 1px solid var(--line);
}

.contact-signoff__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--chalk);
}

.contact-signoff__mail {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: clamp(19px, 5.2vw, 56px);
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--lime);
  word-break: break-word;
}

.contact-signoff__tip {
  margin: 20px 0 0;
  max-width: 50ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--chalk);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .contact-hero__lead {
    font-size: 16px;
  }

  .contact-hero__channels {
    grid-template-columns: 1.05fr 0.92fr 1.28fr;
    gap: 16px;
    margin-top: 44px;
  }

  .channel {
    padding: 24px 30px 28px 24px;
  }

  .info-line {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 20px;
  }

  .info-line__key {
    grid-row: span 2;
    align-self: start;
    padding-top: 4px;
  }

  .info-line__note {
    grid-column: 2;
  }

  .reply-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .reply-card:nth-child(2) {
    margin-top: 14px;
  }

  .reply-card:nth-child(3) {
    margin-top: 28px;
  }

  .prep-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .how-row {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: 36px;
    align-items: start;
    padding: 34px 0;
  }

  .how-row__head {
    flex-direction: column;
    gap: 8px;
  }

  .place {
    grid-template-columns: 1fr 1fr;
    column-gap: 52px;
    align-items: center;
  }

  .place__figure {
    order: 2;
  }

  .place__text {
    order: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .reply-card,
  .page-contact .prep-link {
    transition: opacity 0.2s linear;
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within,
  .page-contact .reply-card:hover,
  .page-contact .prep-link:hover,
  .page-contact .prep-link:focus-visible {
    transform: none;
  }
}