.page-contact .c-sec {
  padding: clamp(52px, 7vw, 96px) 0;
}

/* ---------- 首屏 ---------- */
.page-contact .c-hero {
  position: relative;
  overflow: hidden;
  background: var(--wine);
  color: var(--crane);
  padding: clamp(36px, 5.5vw, 80px) 0 clamp(48px, 7vw, 92px);
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(246, 242, 234, .055) 0 1px, transparent 1px 104px);
  pointer-events: none;
}

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

.page-contact .c-crumb {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-contact .c-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
}

.page-contact .c-crumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(246, 242, 234, .6);
}

.page-contact .c-crumb li + li::before {
  content: "/";
  color: rgba(246, 242, 234, .32);
}

.page-contact .c-crumb a {
  color: rgba(246, 242, 234, .86);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .22s var(--ease);
}

.page-contact .c-crumb a:hover,
.page-contact .c-crumb a:focus-visible {
  border-bottom-color: var(--teal-bright);
}

.page-contact .c-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 4.5vw, 56px);
}

.page-contact .c-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--teal-bright);
}

.page-contact .c-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.page-contact .c-kicker--ink {
  color: var(--teal);
}

.page-contact .c-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.2vw, 4.1rem);
  line-height: 1.16;
  letter-spacing: .04em;
}

.page-contact .c-hero-lead {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  line-height: 1.85;
  color: rgba(246, 242, 234, .84);
}

.page-contact .c-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-tags li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid rgba(246, 242, 234, .28);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: rgba(246, 242, 234, .92);
}

.page-contact .c-tags li::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal-bright);
}

.page-contact .c-hero-side {
  display: grid;
  gap: 18px;
}

.page-contact .c-hero-figure {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(246, 242, 234, .18);
  background: rgba(246, 242, 234, .06);
}

.page-contact .c-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .c-entries {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-entry {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 54px;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(246, 242, 234, .24);
  background: rgba(246, 242, 234, .08);
  color: var(--crane);
  text-decoration: none;
  transition: background .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .c-entry:hover,
.page-contact .c-entry:focus-visible {
  background: var(--red);
  border-color: var(--red);
}

.page-contact .c-entry-num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: rgba(246, 242, 234, .62);
}

.page-contact .c-entry-label {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .03em;
}

.page-contact .c-entry-arrow {
  margin-left: auto;
  font-family: var(--font-mono);
  transition: transform .22s var(--ease);
}

.page-contact .c-entry:hover .c-entry-arrow,
.page-contact .c-entry:focus-visible .c-entry-arrow {
  transform: translateX(4px);
}

/* ---------- 分类入口 ---------- */
.page-contact .c-box {
  background: var(--crane);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .c-head {
  display: grid;
  gap: 14px;
  max-width: 48rem;
  margin-bottom: clamp(26px, 3.5vw, 42px);
}

.page-contact .c-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  line-height: 1.24;
  letter-spacing: .03em;
  color: var(--ink);
}

.page-contact .c-head p {
  margin: 0;
  line-height: 1.85;
  color: var(--warm);
}

.page-contact .c-box-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .c-sheet {
  border: 1px solid var(--mist);
  border-radius: var(--r-md);
  background: var(--paper);
  overflow: hidden;
  transition: border-color .22s var(--ease);
}

.page-contact .c-sheet[open] {
  border-color: var(--teal);
}

.page-contact .c-sheet > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 58px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}

.page-contact .c-sheet > summary::-webkit-details-marker {
  display: none;
}

.page-contact .c-sheet > summary::marker {
  content: "";
}

.page-contact .c-sheet-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--teal);
}

.page-contact .c-sheet > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--red);
}

.page-contact .c-sheet[open] > summary::after {
  content: "–";
}

.page-contact .c-sheet-body {
  padding: 0 20px 22px;
}

.page-contact .c-sheet-body ul {
  margin: 0;
  padding-left: 1.1em;
}

.page-contact .c-sheet-body li {
  margin: 0 0 9px;
  line-height: 1.8;
  color: var(--warm);
}

.page-contact .c-sheet-body li:last-child {
  margin-bottom: 0;
}

.page-contact .c-sheet-body strong {
  color: var(--ink);
}

.page-contact .c-sheet-body a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .c-sheet-body a:hover {
  color: var(--red);
}

/* ---------- 写法建议 ---------- */
.page-contact .c-write {
  background: var(--paper);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .c-write-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .c-hint {
  margin-top: 6px;
  padding: 20px 22px;
  border-radius: var(--r-md);
  background: var(--wine);
  color: var(--crane);
}

.page-contact .c-hint p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: rgba(246, 242, 234, .9);
}

.page-contact .c-hint strong {
  color: #fff;
}

.page-contact .c-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--mist);
}

.page-contact .c-steps li:last-child {
  border-bottom: 1px solid var(--mist);
}

.page-contact .c-step-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--red);
}

.page-contact .c-steps h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}

.page-contact .c-steps p {
  margin: 0;
  line-height: 1.8;
  color: var(--warm);
}

/* ---------- 联系渠道 ---------- */
.page-contact .c-channels {
  background: var(--crane);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .c-ch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .c-plate {
  margin: 0;
  padding: clamp(24px, 3.4vw, 38px);
  border-radius: var(--r-lg);
  background: var(--deep);
  color: var(--crane);
}

.page-contact .c-plate dt {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal-bright);
}

.page-contact .c-plate dd {
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: clamp(.9rem, 1.3vw, 1.02rem);
  line-height: 1.65;
  word-break: break-word;
}

.page-contact .c-plate a {
  color: var(--crane);
  text-decoration: none;
  border-bottom: 1px solid rgba(246, 242, 234, .45);
  padding-bottom: 1px;
  transition: color .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .c-plate a:hover,
.page-contact .c-plate a:focus-visible {
  color: var(--teal-bright);
  border-bottom-color: var(--teal-bright);
}

.page-contact .c-plate-note {
  margin: 22px 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(246, 242, 234, .2);
  font-family: var(--font-body);
  font-size: .9rem;
  line-height: 1.8;
  color: rgba(246, 242, 234, .78);
}

.page-contact .c-ch-figure {
  margin: 0;
}

.page-contact .c-ch-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r-lg);
}

.page-contact .c-ch-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--warm);
}

/* ---------- 处理节奏 ---------- */
.page-contact .c-flow {
  background: var(--deep);
  color: var(--crane);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .c-flow .c-head h2 {
  color: var(--crane);
}

.page-contact .c-flow .c-head p {
  color: rgba(246, 242, 234, .78);
}

.page-contact .c-flow-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-flow-item {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid rgba(246, 242, 234, .22);
}

.page-contact .c-flow-item::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--teal-bright);
}

.page-contact .c-flow-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(99, 194, 183, .4);
  background: rgba(99, 194, 183, .16);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--teal-bright);
}

.page-contact .c-flow-item h3 {
  margin: 14px 0 8px;
  font-size: 1rem;
  letter-spacing: .04em;
  color: var(--crane);
}

.page-contact .c-flow-item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: rgba(246, 242, 234, .76);
}

.page-contact .c-flow-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: clamp(30px, 4vw, 46px);
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid rgba(246, 242, 234, .22);
}

.page-contact .c-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--crane);
}

.page-contact .c-stat-label {
  display: block;
  margin-top: 6px;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(246, 242, 234, .72);
}

/* ---------- 合作共建 ---------- */
.page-contact .c-partner {
  background: var(--indigo);
  color: var(--crane);
  padding: clamp(52px, 7vw, 96px) 0;
}

.page-contact .c-partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .c-partner .c-head h2 {
  color: var(--crane);
}

.page-contact .c-partner .c-head p {
  color: rgba(246, 242, 234, .8);
}

.page-contact .c-scene-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-scene-tags li {
  padding: 6px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(246, 242, 234, .26);
  font-size: .82rem;
  color: rgba(246, 242, 234, .9);
}

.page-contact .c-partner-cta {
  margin: 6px 0 0;
}

.page-contact .c-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 26px;
  border-radius: var(--r-pill);
  background: var(--red);
  color: #fff;
  text-decoration: none;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .04em;
  transition: background .22s var(--ease);
}

.page-contact .c-btn:hover,
.page-contact .c-btn:focus-visible {
  background: var(--wine);
}

.page-contact .c-btn span {
  transition: transform .22s var(--ease);
}

.page-contact .c-btn:hover span,
.page-contact .c-btn:focus-visible span {
  transform: translateX(4px);
}

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

.page-contact .c-partner-steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  border: 1px solid rgba(246, 242, 234, .14);
  background: rgba(246, 242, 234, .07);
}

.page-contact .c-partner-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--teal-bright);
}

.page-contact .c-partner-steps li > span:last-child {
  font-size: .94rem;
  line-height: 1.75;
  color: rgba(246, 242, 234, .9);
}

/* ---------- 送信前提示 ---------- */
.page-contact .c-scope {
  background: var(--mist);
  padding: clamp(40px, 5vw, 72px) 0;
}

.page-contact .c-scope h2 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 900;
  letter-spacing: .03em;
  color: var(--ink);
}

.page-contact .c-scope-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .c-scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: .92rem;
  line-height: 1.8;
  color: #4C4740;
}

.page-contact .c-scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 7px;
  height: 1px;
  background: var(--red);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .c-flow-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 780px) {
  .page-contact .c-flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 840px) {
  .page-contact .c-box-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

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

  .page-contact .c-scope-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px 36px;
  }
}

@media (min-width: 940px) {
  .page-contact .c-ch-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .c-write-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-entry,
  .page-contact .c-entry-arrow,
  .page-contact .c-btn,
  .page-contact .c-btn span,
  .page-contact .c-sheet,
  .page-contact .c-crumb a,
  .page-contact .c-plate a {
    transition: none;
  }
}