:root {
  --ink: #18202a;
  --muted: #5d6978;
  --line: #dfe5eb;
  --paper: #ffffff;
  --field: #f4f7fa;
  --navy: #123c69;
  --blue: #1c70b7;
  --teal: #168b86;
  --red: #c23b2a;
  --steel: #eef3f7;
  --footer-bg: #0c1219;
  --shadow: 0 14px 34px rgba(16, 33, 48, 0.14);
}

* {
  box-sizing: border-box;
}

.mobile-site *,
.mobile-site *::before,
.mobile-site *::after {
  min-width: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: #e9eef4;
  line-height: 1.6;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.mobile-site {
  width: 100%;
  max-width: 480px;
  min-height: 100vh;
  margin: 0 auto;
  padding-bottom: calc(70px + env(safe-area-inset-bottom));
  background: var(--paper);
  box-shadow: 0 0 0 1px rgba(16, 33, 48, 0.06);
  overflow-x: hidden;
}

.mobile-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 62px;
  padding: 10px 14px;
  color: #ffffff;
  background: rgba(12, 18, 25, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.78);
  background: var(--red);
  font-size: 14px;
  font-weight: 900;
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.mobile-brand span:last-child {
  display: grid;
  min-width: 0;
}

.mobile-brand strong {
  overflow: hidden;
  max-width: 220px;
  font-size: 15px;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mobile-brand small {
  overflow: hidden;
  color: rgba(255, 255, 255, 0.64);
  font-size: 10px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-toggle {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px auto;
  background: #ffffff;
}

.site-nav {
  position: absolute;
  top: 62px;
  right: 12px;
  left: 12px;
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(12, 18, 25, 0.98);
  box-shadow: var(--shadow);
}

.site-nav.is-open {
  display: grid;
}

.site-nav a {
  min-height: 40px;
  padding: 9px 10px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
}

section[id] {
  scroll-margin-top: 74px;
}

.mobile-hero {
  min-height: 560px;
  display: grid;
  align-content: end;
  gap: 18px;
  padding: 92px 18px 22px;
  color: #ffffff;
  background: #111820 center / cover no-repeat;
}

.mobile-kicker {
  margin: 0;
  color: #ffb2a8;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.mobile-hero h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.14;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.mobile-hero h1 span {
  display: block;
}

.mobile-hero > p:not(.mobile-kicker) {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 16px;
}

.hero-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.primary-action,
.secondary-action {
  display: grid;
  min-height: 46px;
  place-items: center;
  border-radius: 4px;
  padding: 0 10px;
  font-size: 14px;
  font-weight: 900;
  text-align: center;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.primary-action {
  color: #ffffff;
  background: var(--red);
}

.secondary-action {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: #ffffff;
}

.mobile-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
}

.mobile-stats div {
  min-height: 76px;
  padding: 12px 10px;
  background: rgba(8, 18, 30, 0.72);
}

.mobile-stats strong {
  display: block;
  font-size: 22px;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.mobile-stats span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.mobile-action-strip {
  position: sticky;
  z-index: 12;
  top: 62px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.mobile-action-strip a {
  min-height: 44px;
  display: grid;
  place-items: center;
  color: var(--navy);
  background: #ffffff;
  font-size: 14px;
  font-weight: 900;
  overflow-wrap: anywhere;
  text-align: center;
}

.mobile-section {
  padding: 48px 16px;
  border-bottom: 1px solid var(--line);
}

.mobile-section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.mobile-section-head h2 {
  margin: 0;
  color: var(--ink);
  font-size: 25px;
  line-height: 1.24;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.mobile-section-head p:not(.mobile-kicker),
.mobile-intro > p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.mobile-intro,
.mobile-news {
  background: var(--steel);
}

.mobile-product-list,
.mobile-news-list {
  display: grid;
  gap: 14px;
}

.product-card,
.news-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 8px 22px rgba(20, 42, 62, 0.08);
}

.product-image-link {
  display: block;
  background: linear-gradient(135deg, rgba(238, 243, 247, 0.82), rgba(255, 255, 255, 0.9));
}

.product-card img,
.news-card img {
  width: 100%;
  height: 210px;
  padding: 18px;
  object-fit: contain;
  background: linear-gradient(135deg, rgba(238, 243, 247, 0.82), rgba(255, 255, 255, 0.9));
}

.product-card > div,
.news-card-body {
  display: grid;
  gap: 10px;
  padding: 16px;
  border-top: 1px solid var(--line);
}

.product-card h3,
.news-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.34;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.product-card p,
.news-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.product-detail,
.news-detail {
  margin-top: 4px;
}

.product-detail summary,
.news-detail summary {
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.product-detail dl {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}

.product-detail dl div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.product-detail dt,
.product-detail dd {
  margin: 0;
  font-size: 13px;
}

.product-detail dt {
  color: var(--muted);
}

.product-detail dd {
  color: var(--ink);
  font-weight: 900;
  text-align: right;
}

.product-tags,
.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.product-tags span,
.news-tags span {
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--navy);
  background: var(--field);
  font-size: 12px;
  font-weight: 800;
}

.mobile-capability {
  color: #ffffff;
  background: #111b24;
}

.mobile-capability .mobile-section-head h2 {
  color: #ffffff;
}

.mobile-capability .mobile-section-head .mobile-kicker {
  color: #8ad1cd;
}

.mobile-capability-list {
  display: grid;
  gap: 10px;
}

.mobile-capability-item {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}

.mobile-capability-item span {
  color: #8ad1cd;
  font-size: 12px;
  font-weight: 900;
}

.mobile-capability-item strong {
  font-size: 18px;
}

.mobile-capability-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.mobile-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mobile-chip-list span {
  min-height: 40px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--navy);
  background: var(--field);
  font-size: 14px;
  font-weight: 900;
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
}

.news-meta span {
  color: var(--teal);
  font-weight: 900;
}

.news-author {
  color: var(--ink) !important;
  font-weight: 900;
}

.mobile-contact {
  color: #ffffff;
  background: linear-gradient(180deg, #0e2c48, #123c69);
}

.mobile-contact .mobile-section-head h2,
.mobile-contact .mobile-section-head p {
  color: #ffffff;
}

.mobile-contact .mobile-kicker {
  color: #8ad1cd;
}

.mobile-contact-info {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.mobile-contact-info div {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 10px;
}

.mobile-contact-info dt,
.mobile-contact-info dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
}

.mobile-contact-info dt {
  font-weight: 900;
}

.mobile-contact-links,
.mobile-payment-methods {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
}

.mobile-contact-links > div,
.mobile-payment-methods {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.mobile-contact-links strong,
.mobile-payment-methods strong {
  display: block;
  margin-bottom: 8px;
  color: #ffffff;
  font-size: 14px;
}

.mobile-contact-links div div,
.mobile-payment-methods div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mobile-contact-links a,
.mobile-contact-links span,
.mobile-payment-methods span {
  min-height: 34px;
  display: inline-grid;
  place-items: center;
  padding: 6px 10px;
  border-radius: 4px;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.14);
  font-size: 13px;
  font-weight: 900;
}

.inquiry-form {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.inquiry-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 900;
}

.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #cbd5df;
  border-radius: 4px;
  padding: 10px 12px;
  color: var(--ink);
  background: #ffffff;
}

.inquiry-form textarea {
  resize: vertical;
}

.inquiry-form > button {
  min-height: 46px;
  border: 0;
  border-radius: 4px;
  color: #ffffff;
  background: var(--red);
  font-weight: 900;
}

.inquiry-cart-box {
  display: grid;
  gap: 10px;
  padding: 12px;
  border: 1px solid #d8e1e8;
  border-radius: 8px;
  background: var(--field);
}

.cart-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.cart-head strong {
  font-size: 14px;
}

.cart-head button,
.inquiry-cart-box li button {
  min-height: 30px;
  border: 1px solid #cbd5df;
  border-radius: 4px;
  padding: 4px 8px;
  color: var(--navy);
  background: #ffffff;
  font-size: 12px;
  font-weight: 900;
}

.inquiry-cart-box p,
.inquiry-cart-box ul {
  margin: 0;
}

.inquiry-cart-box ul {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
}

.inquiry-cart-box li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

.form-note {
  min-height: 20px;
  margin: 0;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.mobile-footer {
  padding: 24px 16px 92px;
  color: rgba(255, 255, 255, 0.74);
  background: var(--footer-bg);
}

.mobile-footer strong {
  color: #ffffff;
}

.mobile-footer p {
  margin: 8px 0 12px;
  font-size: 14px;
}

.mobile-footer a {
  color: #ffffff;
  font-weight: 900;
}

.mobile-bottom-bar {
  position: fixed;
  z-index: 30;
  right: auto;
  bottom: 0;
  left: 50%;
  width: 100%;
  max-width: 480px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 auto;
  padding-bottom: env(safe-area-inset-bottom);
  border-top: 1px solid var(--line);
  background: #ffffff;
  box-shadow: 0 -10px 28px rgba(16, 33, 48, 0.12);
  transform: translateX(-50%);
}

.mobile-bottom-bar a {
  min-height: 56px;
  display: grid;
  place-items: center;
  color: var(--navy);
  font-size: 13px;
  font-weight: 900;
}

.mobile-bottom-bar a:nth-child(3),
.mobile-bottom-bar a:nth-child(4) {
  color: #ffffff;
  background: var(--red);
}

@media (max-width: 360px) {
  .mobile-hero h1 {
    font-size: 30px;
  }

  .hero-actions,
  .mobile-stats {
    grid-template-columns: 1fr;
  }

  .mobile-brand strong {
    max-width: 210px;
  }
}