.page-contact {
  --contact-rail-w: 300px;
  --contact-hair: rgba(198, 255, 61, 0.42);
  --contact-flame-hair: rgba(255, 90, 43, 0.42);
  --contact-cyan-hair: rgba(63, 210, 199, 0.42);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  z-index: 0;
  padding: clamp(22px, 5vw, 44px) 0 clamp(18px, 3.6vw, 30px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -18%;
  right: -12%;
  width: clamp(180px, 34vw, 440px);
  height: clamp(180px, 34vw, 440px);
  background: radial-gradient(circle at 34% 34%, rgba(198, 255, 61, 0.2), rgba(198, 255, 61, 0) 66%);
  clip-path: polygon(14% 0, 100% 0, 100% 86%, 0 100%);
  pointer-events: none;
}

.page-contact .contact-hero .kicker {
  margin: 0;
  color: var(--lime);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.page-contact .contact-hero h1 {
  margin: clamp(10px, 2vw, 18px) 0 0;
}

.page-contact .contact-hero__lede {
  max-width: 60ch;
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.78;
}

.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(16px, 3vw, 24px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-chips .chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: 0.82rem;
  line-height: 1.5;
}

.page-contact .hero-chips .chip .mono {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  opacity: 0.85;
}

/* ---------- 章节索引 ---------- */
.page-contact .index-rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 16px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-contact .index-rail__link {
  flex: 0 0 auto;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-contact .index-rail__link:hover {
  color: var(--text);
  border-color: var(--lime);
}

.page-contact .index-rail__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .index-rail__link[aria-current="true"] {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

/* ---------- 主布局 ---------- */
.page-contact .contact-layout {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
  padding: clamp(30px, 5vw, 52px) 0 clamp(52px, 8vw, 96px);
}

.page-contact .contact-section {
  margin-bottom: clamp(44px, 7vw, 82px);
  scroll-margin-top: 100px;
}

.page-contact .contact-section:last-child {
  margin-bottom: 0;
}

/* ---------- 章节头 ---------- */
.page-contact .contact-section .section-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(12px, 2vw, 18px);
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .section-num {
  flex: 0 0 auto;
  color: rgba(198, 255, 61, 0.14);
  -webkit-text-stroke: 1px rgba(198, 255, 61, 0.68);
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-contact .section-title {
  margin: 0;
  font-size: clamp(1.24rem, 3.4vw, 1.85rem);
  line-height: 1.3;
}

.page-contact .section-kicker {
  max-width: 46ch;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.72;
}

/* ---------- 通道横幅图 ---------- */
.page-contact .channel-band {
  margin: 0 0 clamp(18px, 3vw, 28px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.page-contact .channel-band img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--panel);
}

.page-contact .channel-band .media__caption {
  padding: 12px 16px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

/* ---------- 三条通道 ---------- */
.page-contact .channel-stack {
  display: grid;
  gap: 16px;
}

.page-contact .channel {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-left: 4px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
}

.page-contact .channel:hover {
  transform: translateY(-3px);
}

.page-contact .channel--mail { border-left-color: var(--lime); }
.page-contact .channel--phone { border-left-color: var(--flame); }
.page-contact .channel--board { border-left-color: var(--cyan); }

.page-contact .channel__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-contact .channel__code {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
}

.page-contact .channel--mail .channel__code { color: var(--lime); border-color: var(--contact-hair); }
.page-contact .channel--phone .channel__code { color: var(--flame); border-color: var(--contact-flame-hair); }
.page-contact .channel--board .channel__code { color: var(--cyan); border-color: var(--contact-cyan-hair); }

.page-contact .channel__name {
  margin: 0;
  font-size: 1.05rem;
}

.page-contact .channel__value {
  margin: 14px 0 0;
  font-size: clamp(1rem, 3.4vw, 1.4rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}

.page-contact .channel--mail .channel__value { color: var(--lime); }
.page-contact .channel--phone .channel__value { color: var(--flame); }
.page-contact .channel--board .channel__value { color: var(--cyan); }

.page-contact .channel__desc {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.76;
}

.page-contact .channel__fit {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel__fit li {
  position: relative;
  padding-left: 18px;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.65;
}

.page-contact .channel__fit li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--line);
  transform: translateY(-50%) rotate(45deg);
}

.page-contact .channel--mail .channel__fit li::before { background: var(--lime); }
.page-contact .channel--phone .channel__fit li::before { background: var(--flame); }
.page-contact .channel--board .channel__fit li::before { background: var(--cyan); }

.page-contact .channel__meta {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
}

/* ---------- 通用正文 ---------- */
.page-contact .contact-body p {
  max-width: 62ch;
  margin: 0 0 18px;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.8;
}

.page-contact .ask-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ask-list li {
  display: grid;
  gap: 6px;
  padding: 15px 16px;
  background: linear-gradient(90deg, rgba(18, 33, 29, 0.96), rgba(18, 33, 29, 0.35));
  border-bottom: 1px solid var(--line);
}

.page-contact .ask-list li:first-child { border-radius: var(--r-md) var(--r-md) 0 0; }
.page-contact .ask-list li:last-child { border-bottom: 0; border-radius: 0 0 var(--r-md) var(--r-md); }

.page-contact .ask-list__key {
  color: var(--lime);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

.page-contact .ask-list li > span:last-child {
  color: var(--text);
  font-size: 0.93rem;
  line-height: 1.7;
}

/* ---------- 卡点 ---------- */
.page-contact .issue-grid {
  display: grid;
  gap: 14px;
}

.page-contact .issue {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink);
  transition: border-color 0.28s var(--ease);
}

.page-contact .issue:hover {
  border-color: var(--contact-flame-hair);
}

.page-contact .issue__tag {
  display: inline-block;
  color: var(--flame);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
}

.page-contact .issue__title {
  margin: 8px 0 6px;
  font-size: 1rem;
  line-height: 1.4;
}

.page-contact .issue p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-contact .contact-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--amber);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.76;
}

/* ---------- 合作 ---------- */
.page-contact .partner-panel {
  padding: clamp(18px, 3.4vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, var(--elevated), var(--panel) 62%);
}

.page-contact .partner-panel > p {
  max-width: 64ch;
  margin: 0 0 22px;
  color: var(--text);
  font-size: 0.97rem;
  line-height: 1.8;
}

.page-contact .partner-list {
  display: grid;
  gap: 13px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .partner-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .partner-list li .mono {
  color: var(--lime);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
}

.page-contact .text-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-hair);
  transition: border-color 0.24s var(--ease);
}

.page-contact .text-link:hover {
  border-bottom-color: var(--lime);
}

.page-contact .text-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 地址 ---------- */
.page-contact .address-block {
  display: grid;
  gap: 20px;
}

.page-contact .address-visual {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.page-contact .address-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--panel);
}

.page-contact .address-visual .media__caption {
  padding: 12px 16px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.page-contact .address-info__value {
  margin: 0 0 14px;
  color: var(--lime);
  font-size: clamp(0.98rem, 3vw, 1.24rem);
  line-height: 1.5;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}

.page-contact .address-info p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-contact .address-info p:last-child {
  margin-bottom: 0;
}

/* ---------- 回复时段带 ---------- */
.page-contact .contact-section--band {
  padding-top: clamp(18px, 3.4vw, 30px);
  border-top: 1px solid var(--line);
}

.page-contact .timeband {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--line);
}

.page-contact .timeband__slot {
  padding: 16px 18px;
  background: var(--panel);
}

.page-contact .timeband__label {
  display: block;
  margin-bottom: 6px;
  color: var(--lime);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.page-contact .timeband__slot p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---------- 右侧竖向联系面板 ---------- */
.page-contact .contact-rail {
  position: relative;
}

.page-contact .rail-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(170deg, var(--elevated), var(--panel));
}

.page-contact .rail-panel::after {
  content: "";
  position: absolute;
  right: -34%;
  bottom: -42%;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(63, 210, 199, 0.22), rgba(63, 210, 199, 0) 68%);
  pointer-events: none;
}

.page-contact .rail-panel__label {
  margin: 0 0 16px;
  color: var(--lime);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
}

.page-contact .rail-list {
  display: grid;
  gap: 15px;
  margin: 0;
}

.page-contact .rail-item {
  display: grid;
  gap: 4px;
}

.page-contact .rail-item__key {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
}

.page-contact .rail-item__val {
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-contact .rail-panel__note {
  margin: 20px 0 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.72;
}

.page-contact .rail-panel .btn {
  margin-top: 10px;
}

.page-contact .rail-panel .btn:first-of-type {
  margin-top: 0;
}

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

@media (min-width: 720px) {
  .page-contact .channel-stack {
    gap: 18px;
  }

  .page-contact .channel:nth-child(1) {
    margin-right: 7%;
  }

  .page-contact .channel:nth-child(2) {
    margin-left: 6%;
  }

  .page-contact .channel:nth-child(3) {
    margin-right: 3%;
    margin-left: 2%;
  }

  .page-contact .ask-list li {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

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

@media (min-width: 860px) {
  .page-contact .address-block {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 26px;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) var(--contact-rail-w);
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-contact .timeband {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>