.page-contact {
  --ct-gap: clamp(20px, 4vw, 48px);
  position: relative;
  padding-top: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(40px, 6vw, 88px);
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, var(--hair-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair-soft) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-contact figure { margin: 0; }
.page-contact img { display: block; max-width: 100%; height: auto; }

.page-contact .ct-crumbs { padding-bottom: clamp(14px, 2vw, 22px); }

/* ---------- 首屏 ---------- */
.ct-hero {
  display: grid;
  gap: var(--ct-gap);
  padding-bottom: clamp(28px, 5vw, 60px);
}

.ct-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 8.4vw, 96px);
  line-height: 0.94;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.ct-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.8;
  color: rgba(242, 245, 234, 0.84);
}

.ct-relay {
  margin-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--hair);
}

.ct-relay__row {
  padding: clamp(14px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--hair);
}

.ct-relay__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.ct-relay__label::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--signal);
}

.ct-relay__value {
  margin: 10px 0 0;
  font-family: var(--font-num);
  font-size: clamp(18px, 3.6vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
  user-select: all;
}

.ct-relay__value--num { color: var(--signal); }

.ct-relay__note {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.ct-hero__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.ct-note-card {
  position: relative;
  padding: clamp(16px, 2.6vw, 24px);
  border: 1px solid var(--hair);
  background: linear-gradient(155deg, rgba(13, 43, 34, 0.92), rgba(7, 21, 28, 0.94));
}

.ct-note-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--signal);
  border-left: 2px solid var(--signal);
}

.ct-note-card::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 16px;
  height: 16px;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.ct-note-card .tag { display: inline-block; }

.ct-note-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.3;
  color: var(--paper);
}

.ct-note-card__body {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 三条路径 ---------- */
.ct-routes { padding-block: clamp(26px, 4vw, 52px) 0; }

.ct-routes__head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.ct-routes__list {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hair);
}

.ct-route {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--hair);
}

.ct-route__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--line);
}

.ct-route__body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.2;
  color: var(--paper);
}

.ct-route__val {
  margin: 8px 0 0;
  font-family: var(--font-num);
  font-size: clamp(15px, 2.1vw, 19px);
  line-height: 1.4;
  color: var(--signal);
  overflow-wrap: anywhere;
  user-select: all;
}

.ct-route__val--num { letter-spacing: 0.04em; }

.ct-route__meta p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 245, 234, 0.76);
}

/* ---------- 回复节奏 ---------- */
.ct-sla {
  margin-top: clamp(26px, 4vw, 44px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--signal);
  background: rgba(13, 43, 34, 0.55);
}

.ct-sla__lead {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--signal);
}

.ct-sla__body {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(242, 245, 234, 0.85);
}

.ct-sla__link {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.ct-sla__link a,
.ct-collab__note a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 255, 62, 0.45);
  transition: border-color 200ms ease, color 200ms ease;
}

.ct-sla__link a:hover,
.ct-sla__link a:focus-visible,
.ct-collab__note a:hover,
.ct-collab__note a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 反馈模板 ---------- */
.ct-feedback {
  display: grid;
  gap: var(--ct-gap);
  padding-top: clamp(36px, 6vw, 78px);
}

.ct-feedback__body h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.12;
  color: var(--paper);
}

.ct-feedback__lead {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.ct-prep {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.ct-prep li {
  padding: 10px 0 10px 14px;
  border-left: 2px solid var(--pitch);
  background: linear-gradient(90deg, rgba(31, 107, 74, 0.22), rgba(31, 107, 74, 0));
}

.ct-prep strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.3vw, 21px);
  letter-spacing: 0.02em;
  color: var(--paper);
}

.ct-prep span {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.ct-faq {
  margin-top: clamp(22px, 3.4vw, 34px);
  border-top: 1px solid var(--hair);
}

.ct-faq__item { border-bottom: 1px solid var(--hair); }

.ct-faq__item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.3vw, 21px);
  line-height: 1.35;
  color: var(--paper);
  transition: color 180ms ease;
}

.ct-faq__item summary::-webkit-details-marker { display: none; }

.ct-faq__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 18px;
  color: var(--signal);
}

.ct-faq__item[open] summary { color: var(--signal); }
.ct-faq__item[open] summary::after { content: "–"; }

.ct-faq__item summary:hover { color: var(--signal); }

.ct-faq__body {
  padding: 0 0 18px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 245, 234, 0.76);
}

/* ---------- 协作 ---------- */
.ct-collab {
  display: grid;
  gap: var(--ct-gap);
  padding-top: clamp(36px, 6vw, 78px);
}

.ct-collab__intro h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.12;
  color: var(--paper);
}

.ct-collab__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(242, 245, 234, 0.8);
}

.ct-collab__note {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.ct-collab__cards {
  display: grid;
  gap: 16px;
}

.ct-collab__card {
  padding: clamp(18px, 2.8vw, 26px);
  border: 1px solid var(--hair);
  border-top: 3px solid var(--pitch);
  background: rgba(13, 43, 34, 0.6);
}

.ct-collab__card--alt { border-top-color: var(--line); }

.ct-collab__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.5vw, 24px);
  line-height: 1.25;
  color: var(--paper);
}

.ct-collab__card ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.ct-collab__card li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(242, 245, 234, 0.78);
}

.ct-collab__card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--line);
}

.ct-collab__card--alt li::before { background: var(--signal); }

.ct-collab__subject-label {
  margin: 18px 0 6px;
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.ct-collab__subject {
  margin: 0;
  padding: 10px 12px;
  border: 1px dashed rgba(99, 199, 125, 0.4);
  background: var(--ink-2);
  font-family: var(--font-num);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--signal);
  overflow-wrap: anywhere;
  user-select: all;
}

.ct-collab__card .ct-collab__note { margin-top: 12px; }

/* ---------- 地址与备案 ---------- */
.ct-venue {
  margin-top: clamp(36px, 6vw, 78px);
  padding: clamp(20px, 3.4vw, 34px);
  color: var(--ink);
  background-color: var(--sheet);
  background-image:
    linear-gradient(to right, rgba(7, 21, 28, 0.05) 1px, transparent 1px);
  background-size: 40px 100%;
  border: 1px solid rgba(7, 21, 28, 0.18);
  box-shadow: 8px 8px 0 rgba(13, 43, 34, 0.85);
}

.ct-venue__grid {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
}

.ct-venue .eyebrow--dark { color: var(--pitch); }

.ct-venue h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 34px);
  line-height: 1.14;
  color: var(--ink);
}

.ct-venue__addr {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: clamp(15px, 2.2vw, 19px);
  line-height: 1.6;
  color: var(--ink);
  user-select: all;
}

.ct-venue__hint {
  margin: 10px 0 0;
  max-width: 44ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: #3B4A44;
}

.ct-venue__facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(7, 21, 28, 0.2);
  align-content: start;
}

.ct-venue__facts > div {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(7, 21, 28, 0.14);
}

.ct-venue__facts dt {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #52635C;
}

.ct-venue__facts dd {
  margin: 0;
  font-family: var(--font-num);
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink);
  overflow-wrap: anywhere;
  user-select: all;
}

/* ---------- 继续了解 ---------- */
.ct-more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--hair);
}

.ct-more a {
  display: inline-block;
  padding: 9px 14px;
  border: 1px solid var(--hair);
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--paper);
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.ct-more a:hover,
.ct-more a:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  background: rgba(216, 255, 62, 0.07);
}

.ct-more a:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .ct-prep { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ct-collab__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 860px) {
  .ct-route {
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 1.15fr);
    gap: clamp(16px, 3vw, 40px);
    align-items: start;
  }
  .ct-venue__grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
}

@media (min-width: 940px) {
  .ct-hero {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: start;
  }
  .ct-feedback {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }
  .ct-collab {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .ct-hero__side { position: sticky; top: calc(var(--head-h) + 20px); }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * { transition: none !important; }
}
</main>