:root {
  --blue: #05366f;
  --ink: #102844;
  --muted: #63758b;
  --yellow: #ffc400;
  --line: #dfe7f1;
  --max: 1500px;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
.hero-wrap {
  position: relative;
  min-height: clamp(680px, 51.2vw, 982px);
  background: url("assets/hero-clean-base.jpg") center top / cover no-repeat;
}
.nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100px;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, rgba(0,25,58,.34), rgba(0,25,58,0));
}
.nav-inner {
  width: min(var(--max), calc(100% - 56px));
  display: flex;
  align-items: center;
  gap: 42px;
}
.logo {
  width: clamp(190px, 12.4vw, 238px);
  height: 86px;
  object-fit: contain;
  object-position: left center;
  flex: 0 0 auto;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,.22));
  transform: translateY(12px);
}
.menu {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(18px, 3vw, 54px);
  color: #fff;
  font-size: clamp(15px, .94vw, 18px);
  font-weight: 900;
  white-space: nowrap;
  text-shadow: 0 3px 10px rgba(0,0,0,.38);
}
.menu a, .nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
}
.nav-link {
  border: 0;
  background: transparent;
  color: inherit;
  font-size: inherit;
  font-weight: inherit;
  padding: 0;
  cursor: pointer;
}
.nav-toggle { display: none; }
.hero-content {
  position: absolute;
  z-index: 1;
  left: max(56px, calc((100vw - var(--max)) / 2));
  top: clamp(275px, 18.5vw, 355px);
  color: #fff;
}
.hero-content h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(64px, 6.8vw, 108px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: 0;
  -webkit-text-stroke: 1.35px #111;
  text-shadow: 0 4px 14px rgba(0,0,0,.35);
}
.hero-content p {
  margin: 22px 0 0;
  color: #fff;
  font-size: clamp(26px, 2.7vw, 40px);
  line-height: 1.2;
  font-weight: 900;
  -webkit-text-stroke: .75px #111;
  text-shadow: 0 3px 10px rgba(0,0,0,.32);
}
.hero-cta {
  margin-top: 36px;
  display: inline-block;
  background: linear-gradient(#ffda4c, #ffbd00);
  color: #17243b;
  font-size: 22px;
  font-weight: 900;
  padding: 18px 44px;
  border-radius: 7px;
  box-shadow: 0 14px 30px rgba(0,0,0,.25);
}
main { background: #fff; }
.section {
  width: min(1600px, calc(100% - 56px));
  margin: 0 auto;
  padding: 50px 0 36px;
}
.section-title {
  margin: 0 0 8px;
  text-align: center;
  color: var(--blue);
  font-size: clamp(30px, 2vw, 38px);
  line-height: 1.1;
}
.section-sub {
  margin: 0 0 30px;
  text-align: center;
  color: var(--muted);
  font-size: 17px;
  font-weight: 800;
}
.warehouse-promo {
  display: grid;
  grid-template-columns: minmax(280px, .9fr) minmax(360px, 1.2fr);
  gap: 24px;
  align-items: stretch;
  margin: 0 0 24px;
}
.side-slogan {
  min-height: 104px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: clamp(40px, 3vw, 58px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 1px;
  -webkit-text-stroke: 1.45px #111;
  text-shadow: 0 2px 0 #111, 0 0 8px rgba(0,0,0,.28);
  border-radius: 8px;
  background: rgba(196,225,247,.82);
  padding: 18px 14px;
  text-align: center;
}
.side-slogan.left {
  min-height: 132px;
  font-size: clamp(92px, 7.3vw, 136px);
  line-height: .98;
  padding: 12px 18px 16px;
  -webkit-text-stroke: 2px #111;
}
.side-slogan.right {
  font-size: clamp(44px, 3.15vw, 62px);
  -webkit-text-stroke: 1.7px #111;
}
.grid-five {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 14px 28px rgba(17,55,96,.08);
}
.card img {
  width: 100%;
  aspect-ratio: 16 / 12;
  object-fit: cover;
  display: block;
}
.card-title {
  min-height: 70px;
  padding: 17px 19px;
  display: flex;
  align-items: center;
  color: #173c70;
  font-size: 21px;
  font-weight: 900;
}
.business-layout {
  display: grid;
  grid-template-columns: minmax(0, 5.2fr) minmax(270px, .9fr);
  gap: 20px;
  align-items: stretch;
}
.business-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.business-grid .card { grid-column: span 2; }
.business-grid .card:nth-child(4),
.business-grid .card:nth-child(5) { grid-column: span 3; }
.business-grid .card img { aspect-ratio: 16 / 10; }
.business-grid .card-title { min-height: 76px; font-size: 22px; }
.consult {
  border: 1px solid #b8d5f0;
  border-radius: 8px;
  background: linear-gradient(180deg, #e7f4ff, #f7fbff);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 14px 30px rgba(17,55,96,.12);
}
.wechat-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #063f7d;
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 12px;
  box-shadow: 0 10px 18px rgba(0,47,102,.18);
}
.consult h3 { margin: 0 0 10px; color: var(--blue); font-size: 26px; }
.consult p { margin: 0 0 18px; color: #485d76; font-size: 17px; font-weight: 800; line-height: 1.5; }
.consult-button {
  width: 100%;
  border: 0;
  border-radius: 7px;
  background: linear-gradient(180deg, #064f96, #00376f);
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  padding: 14px 18px;
  box-shadow: 0 10px 20px rgba(0,52,111,.18);
}
.quote-popup {
  margin-top: 14px;
  width: 100%;
  border: 1px solid #d4dfeb;
  border-radius: 8px;
  background: #fff;
  padding: 12px;
  color: #173c70;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(17,55,96,.08);
}
.qr-pop {
  margin-top: 16px;
  width: 176px;
  aspect-ratio: 1;
  border: 2px solid var(--line);
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #fff;
  box-shadow: inset 0 0 0 4px #f2f8ff;
}
.qr-pop img { width: 86%; height: 86%; object-fit: contain; }
footer {
  background: #00356f;
  color: #fff;
  font-weight: 800;
}
.footer-inner {
  width: min(var(--max), calc(100% - 56px));
  margin: 0 auto;
  padding: 28px 0;
  display: grid;
  grid-template-columns: 1.2fr 1.6fr 1fr;
  gap: 24px;
  align-items: end;
  font-size: 18px;
}
.footer-left { display: grid; gap: 10px; }
.footer-sites,
.footer-copy { text-align: right; line-height: 1.6; }
.modal[hidden] { display: none; }
.modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 20, 43, .58);
}
.modal-panel {
  position: relative;
  width: min(680px, 100%);
  background: #fff;
  border-radius: 8px;
  padding: 34px 36px;
  box-shadow: 0 24px 70px rgba(0,0,0,.28);
}
.modal-panel h2 {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 30px;
}
.modal-panel p {
  margin: 0;
  color: #283b55;
  font-size: 19px;
  line-height: 1.85;
  font-weight: 700;
}
.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 50%;
  background: #edf4fb;
  color: #143b6e;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}
body.modal-open { overflow: hidden; }

@media (max-width: 1280px) {
  .menu { gap: 24px; }
  .section { width: min(1180px, calc(100% - 44px)); }
}
@media (max-width: 1120px) {
  .hero-wrap { min-height: 820px; }
  .hero-content { top: 315px; left: 28px; }
  .hero-content h1 { font-size: clamp(48px, 7.4vw, 72px); }
  .hero-content p { font-size: clamp(22px, 3.8vw, 32px); }
  .nav { height: auto; padding: 14px 0; }
  .nav-inner { flex-direction: column; gap: 10px; }
  .logo { width: 210px; height: 74px; object-position: center; transform: translateY(4px); }
  .menu { justify-content: center; flex-wrap: wrap; gap: 14px 24px; font-size: 16px; }
  .warehouse-promo { grid-template-columns: 1fr; gap: 12px; }
  .side-slogan { min-height: 88px; font-size: 34px; padding: 14px; }
  .side-slogan.left { min-height: 106px; font-size: clamp(66px, 9vw, 96px); }
  .side-slogan.right { font-size: 38px; }
  .grid-five,
  .business-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .business-layout { grid-template-columns: 1fr; }
  .business-grid .card,
  .business-grid .card:nth-child(4),
  .business-grid .card:nth-child(5) { grid-column: auto; }
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
  .footer-sites,
  .footer-copy { text-align: center; }
}
@media (max-width: 680px) {
  .hero-wrap { min-height: 720px; background-position: 56% top; }
  .nav-inner,
  .section,
  .footer-inner { width: calc(100% - 28px); }
  .nav-inner { align-items: stretch; }
  .nav-head { display: flex; }
  .logo { width: 172px; height: 62px; align-self: center; }
  .nav-toggle {
    display: block;
    position: absolute;
    right: 14px;
    top: 22px;
    border: 0;
    border-radius: 7px;
    background: rgba(0,42,92,.78);
    color: #fff;
    font-size: 24px;
    width: 44px;
    height: 40px;
  }
  .menu {
    display: none;
    margin-top: 8px;
    padding: 10px;
    border-radius: 8px;
    background: rgba(0,42,92,.82);
    gap: 8px 14px;
    font-size: 14px;
  }
  .menu.open { display: flex; }
  .hero-content { left: 18px; right: 18px; top: 285px; }
  .hero-content h1 { font-size: clamp(40px, 11vw, 54px); -webkit-text-stroke: 1px #111; }
  .hero-content p { font-size: 20px; -webkit-text-stroke: .45px #111; }
  .hero-cta { width: 100%; text-align: center; font-size: 18px; padding: 15px 18px; }
  .section { padding: 34px 0 28px; }
  .section-sub { font-size: 14px; margin-bottom: 22px; }
  .side-slogan.left { font-size: 54px; }
  .side-slogan.right { font-size: 28px; }
  .grid-five,
  .business-grid { grid-template-columns: 1fr; gap: 16px; }
  .card-title { min-height: 62px; padding: 14px 16px; font-size: 19px; }
  .consult { padding: 22px 18px; }
  .footer-inner { font-size: 15px; gap: 16px; }
}