/* XYHGLOBAL — 跨境电商官网 */
:root {
  --ink: #0a1628;
  --ink-soft: #132338;
  --sea: #1a3a52;
  --foam: #e8eef4;
  --sand: #f3ebe0;
  --copper: #b87333;
  --copper-bright: #d4924a;
  --mute: #8a9aab;
  --line: rgba(232, 238, 244, 0.12);
  --text: #e8eef4;
  --text-dim: #a8b8c8;
  --max: 1120px;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", Georgia, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font: inherit;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* —— Nav —— */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s;
}

.site-header.is-scrolled {
  background: rgba(10, 22, 40, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--foam);
  flex-shrink: 0;
}

.logo span {
  color: var(--copper-bright);
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  transition: color 0.25s;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--foam);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.15rem;
  border: 1px solid rgba(212, 146, 74, 0.55);
  color: var(--copper-bright) !important;
  font-size: 0.85rem !important;
  transition: background 0.25s, color 0.25s !important;
}

.nav-cta:hover {
  background: var(--copper);
  color: var(--ink) !important;
  border-color: var(--copper);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--line);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.lang-switch button {
  background: none;
  border: none;
  color: var(--mute);
  cursor: pointer;
  padding: 0.15rem 0.2rem;
  transition: color 0.2s;
}

.lang-switch button:hover {
  color: var(--foam);
}

.lang-switch button.is-active {
  color: var(--copper-bright);
}

.lang-switch .lang-sep {
  color: var(--mute);
  opacity: 0.5;
  user-select: none;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  height: 1.5px;
  background: var(--foam);
  transition: transform 0.3s var(--ease);
}

.nav-toggle span {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  left: 0;
  right: 0;
}

.nav-toggle span::before {
  top: -7px;
}

.nav-toggle span::after {
  top: 7px;
}

.nav-toggle.is-open span {
  background: transparent;
}

.nav-toggle.is-open span::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle.is-open span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* —— Hero —— */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 8rem 0 5rem;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 55% at 72% 42%, rgba(26, 58, 82, 0.75) 0%, transparent 60%),
    radial-gradient(ellipse 45% 40% at 18% 78%, rgba(184, 115, 51, 0.14) 0%, transparent 50%),
    linear-gradient(165deg, #061018 0%, var(--ink) 42%, #0d2438 100%);
  overflow: hidden;
}

.world-map {
  position: absolute;
  right: -4%;
  top: 46%;
  transform: translateY(-50%);
  width: min(78vw, 920px);
  height: auto;
  max-height: 88vh;
  opacity: 0.95;
  pointer-events: none;
  border: 0;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.35) 18%, #000 42%, #000 100%);
}

.hero-map-fade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(10, 22, 40, 0.92) 0%, rgba(10, 22, 40, 0.55) 32%, transparent 58%),
    linear-gradient(180deg, rgba(6, 16, 24, 0.45) 0%, transparent 28%, transparent 72%, rgba(6, 16, 24, 0.55) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 36rem;
}

.brand-mark {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 5.5rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--foam);
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.15s forwards;
}

.brand-mark em {
  font-style: normal;
  color: var(--copper-bright);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.2vw, 1.85rem);
  font-weight: 450;
  line-height: 1.45;
  color: var(--sand);
  margin-bottom: 1rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.35s forwards;
}

.hero-lead {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 28rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.5s forwards;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  opacity: 0;
  animation: rise 1s var(--ease) 0.65s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
  border: none;
  cursor: pointer;
  background: transparent;
  color: inherit;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--copper);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--copper-bright);
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--foam);
}

.btn-ghost:hover {
  border-color: rgba(232, 238, 244, 0.35);
  background: rgba(232, 238, 244, 0.05);
}

/* —— Sections —— */
.section {
  padding: 6.5rem 0;
  position: relative;
}

.section-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper-bright);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--foam);
  margin-bottom: 1.25rem;
  max-width: 20em;
}

.section-desc {
  color: var(--text-dim);
  max-width: 36rem;
  font-size: 1.05rem;
}

.section-head {
  margin-bottom: 3.5rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-panel {
  position: relative;
  min-height: 28rem;
  background:
    linear-gradient(145deg, rgba(26, 58, 82, 0.6), rgba(10, 22, 40, 0.3)),
    radial-gradient(circle at 70% 30%, rgba(212, 146, 74, 0.2), transparent 55%);
  border: 1px solid var(--line);
  overflow: hidden;
}

.about-panel-visual {
  position: absolute;
  inset: 0 0 28% 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.about-network {
  width: min(100%, 420px);
  height: auto;
  opacity: 0.98;
}

.about-panel-inner {
  position: relative;
  height: 100%;
  min-height: 28rem;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(180deg, transparent 48%, rgba(10, 22, 40, 0.78) 74%, rgba(10, 22, 40, 0.94) 100%);
}

.about-stat {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--copper-bright);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.about-stat-label {
  color: var(--text-dim);
  font-size: 0.95rem;
}

.about-copy p + p {
  margin-top: 1.15rem;
}

.about-copy p {
  color: var(--text-dim);
}

.about-copy strong {
  color: var(--foam);
  font-weight: 600;
}

.facts {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.fact {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  font-size: 0.95rem;
}

.fact dt {
  color: var(--mute);
}

.fact dd {
  color: var(--foam);
}

html[lang="en"] .fact {
  grid-template-columns: 8.5rem 1fr;
}

/* —— Business —— */
.section-business {
  background:
    linear-gradient(180deg, transparent, rgba(19, 35, 56, 0.85) 12%, rgba(19, 35, 56, 0.85) 88%, transparent);
}

.biz-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.biz-item {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.biz-item.is-visible {
  opacity: 1;
  transform: none;
}

.biz-num {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--copper-bright);
  padding-top: 0.2rem;
}

.biz-item h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--foam);
  margin-bottom: 0.6rem;
}

.biz-item p {
  color: var(--text-dim);
  max-width: 42rem;
}

/* —— Advantage strip —— */
.adv-strip {
  padding: 4rem 0;
  border-block: 1px solid var(--line);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.adv-item h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.65rem;
  color: var(--sand);
}

.adv-item p {
  color: var(--text-dim);
  font-size: 0.95rem;
}

/* —— Contact —— */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3.5rem;
  align-items: start;
}

.contact-card {
  padding: 2.25rem;
  background: var(--ink-soft);
  border: 1px solid var(--line);
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 1.75rem;
  color: var(--foam);
}

.contact-rows {
  display: grid;
  gap: 1.35rem;
}

.contact-row {
  display: grid;
  gap: 0.25rem;
}

.contact-row .label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.contact-row .value {
  color: var(--foam);
  font-size: 1.05rem;
}

.contact-row a:hover {
  color: var(--copper-bright);
}

.contact-form {
  display: grid;
  gap: 1.15rem;
}

.field label.is-required::after {
  content: " *";
  color: var(--copper-bright);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(232, 238, 244, 0.04);
  border: 1px solid var(--line);
  color: var(--foam);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.25s;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: rgba(212, 146, 74, 0.55);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

.field select {
  cursor: pointer;
  appearance: none;
  color-scheme: dark;
  background-color: #132338;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a9aab' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px 8px, auto;
  padding-right: 2.5rem;
}

.field select option {
  background-color: #ffffff;
  color: #0a1628;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
}

.form-msg {
  display: none;
  padding: 0.85rem 1rem;
  background: rgba(212, 146, 74, 0.12);
  border: 1px solid rgba(212, 146, 74, 0.35);
  color: var(--sand);
  font-size: 0.9rem;
}

.form-msg.is-show {
  display: block;
}

.form-msg.is-error {
  background: rgba(180, 60, 60, 0.14);
  border-color: rgba(220, 100, 100, 0.4);
  color: #f0c4c4;
}

/* —— Page hero (inner) —— */
.page-hero {
  padding: 9rem 0 4rem;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(26, 58, 82, 0.7), transparent 55%),
    linear-gradient(180deg, #061018, var(--ink));
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: var(--text-dim);
  max-width: 32rem;
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 3.5rem 0 2rem;
  background: #060e18;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.85rem;
}

.footer-brand span {
  color: var(--copper-bright);
}

.footer-about {
  color: var(--text-dim);
  font-size: 0.95rem;
  max-width: 22rem;
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 1.1rem;
}

.footer-col a,
.footer-col p {
  display: block;
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 0.55rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--foam);
}

.footer-bottom {
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  color: var(--mute);
  font-size: 0.85rem;
}

.footer-bottom a:hover {
  color: var(--copper-bright);
}

.icp-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* —— Responsive —— */
@media (max-width: 900px) {
  .split,
  .contact-wrap,
  .footer-top,
  .adv-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about-panel {
    min-height: 18rem;
  }

  .about-panel-inner {
    min-height: 18rem;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    inset: 4.5rem 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 1.25rem 1.5rem;
    background: rgba(10, 22, 40, 0.97);
    border-bottom: 1px solid var(--line);
    display: none;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line);
  }

  .nav-cta {
    margin-top: 0.75rem;
    justify-content: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .biz-item {
    grid-template-columns: 3rem 1fr;
  }

  .world-map {
    width: min(110vw, 720px);
    right: -18%;
    top: 38%;
    opacity: 0.7;
  }

  html[lang="en"] .fact,
  .fact {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 4.5rem 0;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .lang-switch {
    padding: 0.3rem 0.45rem;
    font-size: 0.75rem;
  }
}