.page-contact {
  background: var(--paper);
  color: var(--text-dark);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
}

.page-contact section[id] {
  scroll-margin-top: 104px;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  background: var(--ink);
  color: var(--white);
  padding: clamp(104px, 15vw, 168px) 0 clamp(52px, 7vw, 80px);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line-dark-strong);
}

.page-contact .contact-crumbs {
  margin-bottom: clamp(30px, 5vw, 58px);
}

.page-contact .contact-crumbs .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
}

.page-contact .contact-crumbs .crumbs li {
  display: flex;
  align-items: center;
  color: var(--slate);
}

.page-contact .contact-crumbs .crumbs li + li::before {
  content: "/";
  margin: 0 10px;
  color: var(--slate);
  opacity: .6;
}

.page-contact .contact-crumbs .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .contact-crumbs .crumbs a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-contact .contact-crumbs .crumbs [aria-current="page"] {
  color: var(--amber);
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
}

.page-contact .hero-lead h1 {
  margin: 14px 0 0;
  font-size: clamp(40px, 8.4vw, 96px);
  line-height: 1.04;
  letter-spacing: -.025em;
  font-weight: 900;
  color: var(--white);
}

.page-contact .hero-sub {
  margin: 24px 0 0;
  max-width: 46ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .hero-index {
  display: grid;
  align-content: start;
  border-top: 1px solid var(--line-dark);
}

.page-contact .hero-index a {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line-dark);
  color: var(--white);
  font-size: 15px;
  text-decoration: none;
  transition: color .25s var(--ease), padding-left .3s var(--ease);
}

.page-contact .hero-index a:hover {
  color: var(--signal);
  padding-left: 12px;
}

.page-contact .hero-index .mono {
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--amber);
}

/* ---------- 通用章节标题 ---------- */

.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(32px, 5vw, 54px);
}

.page-contact .section-head h2 {
  margin: 12px 0 0;
  font-size: clamp(27px, 4.2vw, 46px);
  line-height: 1.16;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .section-head__sub {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-mute);
}

.page-contact .section-head--dark h2 {
  color: var(--white);
}

.page-contact .section-head--dark .section-head__sub {
  color: var(--mist);
}

/* ---------- 三类通道 ---------- */

.page-contact .contact-channels {
  background: var(--paper);
  padding: clamp(56px, 9vw, 106px) 0;
}

.page-contact .channels-figure {
  margin: 0 0 clamp(38px, 6vw, 66px);
  border: 1px solid var(--line-light);
  background: var(--ink-2);
  overflow: hidden;
}

.page-contact .channels-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .channel-grid {
  display: grid;
  gap: 20px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3vw, 36px);
  background: var(--white);
  border: 1px solid var(--line-light);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.page-contact .channel-card--mail::before {
  background: var(--signal);
}

.page-contact .channel-card--phone::before {
  background: var(--amber);
}

.page-contact .channel-card--form::before {
  background: var(--slate);
}

.page-contact .channel-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 90, 31, .42);
}

.page-contact .channel-card__no {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--slate);
}

.page-contact .channel-card__kind {
  align-self: flex-start;
  margin: 0;
  padding: 3px 12px;
  border: 1px solid var(--line-light);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-mute);
}

.page-contact .channel-card h3 {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.32;
  letter-spacing: -.015em;
  font-weight: 900;
  color: var(--ink);
}

.page-contact .channel-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-mute);
}

.page-contact .channel-card__value {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--line-light);
  font-size: clamp(15px, 2.2vw, 19px);
  letter-spacing: .01em;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .channel-card__tips {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .channel-card__tips li {
  position: relative;
  padding-left: 15px;
}

.page-contact .channel-card__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 1px;
  background: var(--signal);
}

.page-contact .channel-card__link a {
  color: var(--signal);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 90, 31, .38);
  transition: border-color .25s var(--ease);
}

.page-contact .channel-card__link a:hover {
  border-bottom-color: var(--signal);
}

/* ---------- 回复节奏 ---------- */

.page-contact .contact-rhythm {
  background: var(--ink-2);
  color: var(--white);
  padding: clamp(56px, 9vw, 106px) 0;
}

.page-contact .rhythm-figure {
  margin: 0 0 clamp(34px, 5vw, 54px);
  border: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-contact .rhythm-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

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

.page-contact .rhythm-step {
  position: relative;
  padding: 28px 24px 28px 0;
  border-top: 1px solid var(--line-dark-strong);
}

.page-contact .rhythm-step::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.page-contact .rhythm-step:first-child::before {
  background: var(--signal);
}

.page-contact .rhythm-step__time {
  margin: 0;
  font-size: clamp(21px, 3vw, 32px);
  letter-spacing: -.02em;
  color: var(--amber);
}

.page-contact .rhythm-step h3 {
  margin: 12px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .rhythm-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 提问前准备 ---------- */

.page-contact .contact-brief {
  background: var(--paper);
  padding: clamp(56px, 9vw, 106px) 0;
}

.page-contact .brief-grid {
  display: grid;
  gap: clamp(30px, 4vw, 50px);
}

.page-contact .brief-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .brief-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line-light);
}

.page-contact .brief-list li:last-child {
  border-bottom: 1px solid var(--line-light);
}

.page-contact .brief-list__no {
  padding-top: 6px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-contact .brief-list h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .brief-list p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-mute);
}

.page-contact .brief-aside {
  padding: clamp(26px, 3.4vw, 36px);
  background: var(--ink);
  border-radius: 16px;
  color: var(--white);
}

.page-contact .brief-aside__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-contact .brief-aside__subject {
  display: block;
  margin: 0 0 16px;
  padding: 12px 15px;
  background: rgba(255, 90, 31, .13);
  border-left: 2px solid var(--signal);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--amber);
  word-break: break-word;
}

.page-contact .brief-aside p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .brief-aside .divider {
  margin: 22px 0;
}

.page-contact .brief-aside__cta {
  margin: 0;
}

/* ---------- 合作与本地化对接 ---------- */

.page-contact .contact-partner {
  background: var(--mist);
  padding: clamp(56px, 9vw, 106px) 0;
}

.page-contact .contact-partner .section-head__sub {
  color: var(--text-dark);
}

.page-contact .partner-grid {
  display: grid;
  gap: 16px;
}

.page-contact .partner-card {
  padding: clamp(20px, 2.4vw, 26px);
  background: rgba(255, 255, 255, .74);
  border: 1px solid rgba(11, 16, 48, .1);
  border-radius: 14px;
  transition: transform .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .partner-card:hover {
  transform: translateY(-4px);
  background: var(--white);
}

.page-contact .partner-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dark);
}

/* ---------- 联系地址 ---------- */

.page-contact .contact-address {
  background: var(--ink);
  color: var(--white);
  padding: clamp(50px, 7vw, 88px) 0;
  overflow: hidden;
}

.page-contact .address-inner {
  display: grid;
  gap: clamp(30px, 4vw, 50px);
}

.page-contact .address-line {
  margin: 14px 0 0;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.45;
  letter-spacing: -.015em;
  font-weight: 900;
  color: var(--white);
}

.page-contact .address-note {
  margin: 18px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .address-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 24px 0 0;
  font-size: 14px;
  color: var(--amber);
}

.page-contact .address-art {
  color: var(--slate);
  opacity: .6;
}

.page-contact .address-art svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-contact .rhythm-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .rhythm-step {
    padding-right: 30px;
  }
}

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

  .page-contact .address-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 820px) {
  .page-contact .channel-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1.05fr) minmax(0, .85fr);
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-contact .brief-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact .channel-card__value {
    font-size: 14px;
  }

  .page-contact .hero-index a {
    gap: 12px;
    font-size: 14.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .partner-card,
  .page-contact .hero-index a,
  .page-contact .channel-card__link a,
  .page-contact .contact-crumbs .crumbs a {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .partner-card:hover {
    transform: none;
  }

  .page-contact .hero-index a:hover {
    padding-left: 2px;
  }
}