:root {
  --blue: #076fc9;
  --blue-deep: #064b89;
  --blue-soft: #eaf5fc;
  --ink: #172434;
  --muted: #66717d;
  --line: #dfe5ea;
  --yellow: #f0b429;
  --green: #2f7562;
  --red: #bc3e35;
  --paper: #ffffff;
  --wash: #f5f7f8;
  --wrap: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif; font-size: 15px; line-height: 1.7; letter-spacing: 0; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: min(var(--wrap), calc(100% - 40px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.topbar { height: 30px; color: #5f6368; background: #f1f2f2; font-size: 12px; }
.topbar-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.topbar-inner div { display: flex; align-items: center; gap: 10px; }
.topbar-inner i { width: 1px; height: 12px; background: #aaa; }
.topbar a:hover { color: var(--blue); }

.main-header { height: 120px; background: #fff; }
.header-inner { height: 100%; display: grid; grid-template-columns: minmax(420px, 1fr) auto 302px; align-items: center; gap: 34px; }
.brand { min-width: 0; display: flex; align-items: center; white-space: nowrap; }
.brand-mark { flex: 0 0 64px; width: 64px; height: 52px; color: #fff; background: #151a20; border-radius: 50%; display: grid; place-items: center; box-shadow: inset 0 0 0 5px #edf0f2; }
.brand-mark svg { width: 31px; height: 31px; }
.brand-name { margin-left: 12px; display: flex; flex-direction: column; line-height: 1.15; }
.brand-name strong { font-size: 24px; font-weight: 700; color: #303238; }
.brand-name small { margin-top: 4px; font-family: Arial, sans-serif; font-size: 10px; color: #656b70; }
.brand-line { width: 1px; height: 49px; margin: 0 18px; background: #b8bdc1; }
.brand-slogan { display: flex; flex-direction: column; font-size: 20px; color: #39434b; line-height: 1.3; }
.brand-slogan small { margin-top: 8px; color: #9a6f1b; font-size: 12px; }
.hotline { display: flex; align-items: center; color: var(--blue); }
.hotline > svg { width: 34px; height: 34px; stroke-width: 2.4; }
.hotline span { display: flex; flex-direction: column; margin-left: 10px; color: #555; line-height: 1.1; font-size: 12px; }
.hotline strong { margin-top: 4px; color: #1f2227; font-family: Arial, sans-serif; font-size: 28px; }
.site-search { display: grid; grid-template-columns: 1fr 80px; height: 44px; border: 1px solid var(--blue); }
.site-search input { min-width: 0; padding: 0 14px; border: 0; outline: 0; color: var(--ink); }
.site-search button { border: 0; color: #fff; background: var(--blue); cursor: pointer; }
.site-search button:hover { background: var(--blue-deep); }
.menu-toggle { display: none; }

.primary-nav { position: relative; z-index: 20; height: 60px; background: var(--blue); }
.nav-inner { height: 100%; display: flex; }
.nav-inner a { width: 165px; height: 100%; display: grid; place-items: center; color: #fff; border-right: 1px solid rgba(255,255,255,.13); font-size: 16px; transition: background .2s ease; }
.nav-inner a:first-child { border-left: 1px solid rgba(255,255,255,.13); }
.nav-inner a:hover, .nav-inner a.active { background: #2f61c4; }

.hero { position: relative; min-height: 600px; overflow: hidden; background-color: #c8dfe8; background-image: url("../assets/logistics-hero.jpg"); background-repeat: no-repeat; background-position: center; background-size: cover; }
.hero-shade { position: absolute; inset: 0; background: rgba(11, 32, 47, .28); }
.hero-content { position: relative; z-index: 2; min-height: 600px; padding-top: 115px; color: #fff; text-align: center; }
.hero-eyebrow { margin: 0 0 16px; color: #f8d56b; font: 700 13px/1.2 Arial, sans-serif; }
.hero h1 { margin: 0; font-size: clamp(36px, 4.2vw, 58px); line-height: 1.2; font-weight: 800; text-shadow: 0 2px 14px rgba(0,0,0,.35); }
.hero h1::after { content: ""; display: block; width: 70px; height: 3px; margin: 24px auto; background: var(--yellow); }
.hero-content > p:not(.hero-eyebrow) { margin: 0; font-size: 25px; text-shadow: 0 2px 10px rgba(0,0,0,.35); }
.hero-actions { margin-top: 34px; display: flex; justify-content: center; gap: 12px; }
.btn { min-height: 44px; padding: 0 24px; border: 1px solid transparent; border-radius: 3px; display: inline-flex; align-items: center; justify-content: center; font-weight: 600; transition: transform .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--blue); }
.btn-primary:hover { background: var(--blue-deep); }
.btn-ghost { color: #fff; border-color: rgba(255,255,255,.7); background: rgba(5,27,42,.25); }
.btn-ghost:hover { background: rgba(5,27,42,.55); }
.hero-arrow { position: absolute; top: 50%; z-index: 3; width: 50px; height: 86px; margin-top: -43px; border: 0; color: #fff; background: rgba(0,0,0,.12); cursor: pointer; }
.hero-arrow:hover { background: rgba(0,0,0,.35); }
.hero-prev { left: 28px; }
.hero-next { right: 28px; }
.hero-dots { position: absolute; z-index: 3; bottom: 24px; left: 50%; display: flex; gap: 8px; transform: translateX(-50%); }
.hero-dots button { width: 24px; height: 4px; padding: 0; border: 0; background: rgba(255,255,255,.45); cursor: pointer; }
.hero-dots button.active { background: #fff; }

.section { padding: 82px 0; }
.section-heading { margin-bottom: 38px; }
.section-heading.centered { text-align: center; }
.section-heading > p { margin: 0 0 7px; color: #7b8187; font: 400 34px/1.15 Arial, sans-serif; }
.section-heading h2 { margin: 0; display: flex; align-items: center; justify-content: inherit; gap: 20px; color: var(--blue-deep); font-size: 28px; line-height: 1.35; }
.section-heading.centered h2 { justify-content: center; }
.section-heading h2 span { width: 52px; height: 1px; background: #b7bec4; }
.section-heading.light { color: #fff; }
.section-heading.light > p { color: rgba(255,255,255,.55); }
.section-heading.light h2 { color: #fff; }
.section-subtitle { margin-top: 10px; display: block; color: rgba(255,255,255,.74); }

.material-section { background: #fff; }
.category-tabs { margin-bottom: 32px; display: flex; justify-content: center; gap: 1px; }
.category-tabs button { min-width: 128px; padding: 11px 18px; border: 1px solid var(--line); color: #4d5964; background: #f6f7f8; cursor: pointer; }
.category-tabs button:hover, .category-tabs button.active { color: #fff; border-color: var(--blue); background: var(--blue); }
.search-feedback { min-height: 22px; margin: -18px 0 18px; color: var(--blue-deep); text-align: center; }
.material-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.material-card { min-width: 0; border: 1px solid var(--line); background: #fff; box-shadow: 0 8px 24px rgba(26,57,84,.06); animation: card-in .35s ease both; animation-delay: var(--delay); }
@keyframes card-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.material-visual { position: relative; height: 210px; overflow: hidden; color: #fff; background: #2d6976; display: grid; place-items: center; }
.material-visual::before, .material-visual::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.25); }
.material-visual::before { width: 170px; height: 170px; transform: rotate(45deg); }
.material-visual::after { width: 116px; height: 116px; transform: rotate(45deg); }
.material-visual svg { position: relative; z-index: 2; stroke-width: 1.15; filter: drop-shadow(0 8px 14px rgba(0,0,0,.25)); }
.material-visual span { position: absolute; top: 14px; left: 16px; z-index: 2; padding: 2px 8px; border-left: 3px solid var(--yellow); background: rgba(0,0,0,.22); font-size: 12px; }
.material-visual b { position: absolute; right: 14px; bottom: -12px; font: 700 56px/1 Arial, sans-serif; color: rgba(255,255,255,.12); }
.visual-arrester, .visual-metering { background: #3f6961; }
.visual-transformer, .visual-cement { background: #645d55; }
.visual-insulator { background: #52799a; }
.visual-cable-drum { background: #4f5364; }
.material-copy { padding: 20px 20px 22px; }
.material-copy h3 { margin: 0 0 8px; font-size: 20px; color: #253544; }
.material-copy > p { min-height: 52px; margin: 0 0 16px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.material-details { margin: 0; display: grid; gap: 10px; }
.material-details div { padding-top: 10px; border-top: 1px solid var(--line); }
.material-details dt { display: flex; align-items: center; gap: 7px; color: var(--blue-deep); font-size: 13px; font-weight: 700; }
.material-details dt svg { color: var(--blue); }
.material-details dd { margin: 5px 0 0; color: #5a6872; font-size: 13px; line-height: 1.75; }
.empty-state { grid-column: 1 / -1; min-height: 210px; display: grid; place-items: center; align-content: center; gap: 8px; color: var(--muted); background: var(--wash); }
.empty-state p { margin: 0; }

.advantage-section { padding: 84px 0 90px; color: #fff; background: #123a54; }
.advantage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.advantage-grid article { position: relative; min-height: 190px; padding: 35px 24px 24px; border-top: 3px solid var(--yellow); background: #fff; color: var(--ink); display: grid; grid-template-columns: 58px 1fr; gap: 17px; }
.advantage-grid article > svg { width: 54px; height: 54px; color: var(--blue); stroke-width: 1.3; }
.advantage-grid h3 { margin: 0 0 8px; font-size: 20px; }
.advantage-grid p { margin: 0; color: var(--muted); font-size: 14px; }
.advantage-no { position: absolute; top: 8px; right: 14px; color: #dfe6ea; font: 700 38px/1 Arial, sans-serif; }
.rule-layout { margin-top: 56px; display: grid; grid-template-columns: 400px 1fr; background: #fff; color: var(--ink); }
.rule-figure { margin: 0; min-width: 0; background: #e8f0f2; position: relative; }
.rule-figure img { width: 100%; height: 100%; min-height: 420px; object-fit: cover; image-rendering: auto; }
.rule-figure figcaption { position: absolute; left: 0; right: 0; bottom: 0; padding: 13px 18px; color: #fff; background: rgba(20,41,53,.88); text-align: center; }
.rule-panel { min-width: 0; padding: 30px 34px; }
.rule-panel-head { display: flex; align-items: flex-end; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 18px; }
.rule-panel-head span { color: var(--blue); font: 700 12px/1 Arial, sans-serif; }
.rule-panel-head h3 { margin: 5px 0 0; font-size: 24px; }
.rule-count { padding: 7px 10px; border: 1px solid #cfd9e0; color: var(--blue-deep) !important; background: #f6fafc; border-radius: 3px; font: 600 13px/1.4 inherit !important; }
.forklift-rules { margin: 20px 0 0; padding-left: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 7px 28px; }
.forklift-rules li { padding-left: 4px; color: #53616c; font-size: 13px; line-height: 1.7; }
.forklift-rules li::marker { color: var(--blue); font-weight: 700; }
.limit-grid { margin-top: 24px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.limit-card { min-width: 0; border: 1px solid rgba(255,255,255,.15); background: rgba(255,255,255,.06); }
.limit-card > div { padding: 18px 18px 14px; border-bottom: 1px solid rgba(255,255,255,.12); display: flex; align-items: center; gap: 12px; }
.limit-card svg { color: var(--yellow); }
.limit-card h3 { margin: 0; font-size: 18px; }
.limit-card ul { margin: 0; padding: 15px 18px 18px 34px; color: rgba(255,255,255,.72); font-size: 13px; }
.limit-card li + li { margin-top: 5px; }

.consult-band { padding: 34px 0; color: #fff; background: #0d72c7; border-bottom: 4px solid var(--yellow); }
.consult-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 34px; }
.consult-inner h2 { margin: 0 0 4px; font-size: 25px; }
.consult-inner p { margin: 0; color: rgba(255,255,255,.76); }
.consult-inner > strong { font: 700 32px/1 Arial, sans-serif; }
.btn-white { color: var(--blue-deep); background: #fff; }

.process-section { background: #fff; }
.process-line { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); }
.process-line::before { content: ""; position: absolute; top: 37px; left: 7%; right: 7%; height: 1px; background: #cbd8e1; }
.process-line div { position: relative; text-align: center; display: grid; place-items: center; }
.process-line svg { z-index: 2; width: 74px; height: 74px; padding: 20px; border: 1px solid #cbd8e1; border-radius: 50%; color: var(--blue); background: #fff; stroke-width: 1.4; }
.process-line b { margin-top: 9px; color: var(--yellow); font: 700 12px/1 Arial, sans-serif; }
.process-line span { margin-top: 4px; color: #334553; }

.about-section { padding: 86px 0; background: #edf2f3; }
.about-inner { display: grid; grid-template-columns: 1fr 560px; gap: 64px; align-items: center; }
.about-copy .section-heading { margin-bottom: 22px; }
.about-copy .section-heading > p { font-size: 27px; }
.about-copy .section-heading h2 { justify-content: flex-start; color: var(--ink); }
.about-copy > p { color: #586875; line-height: 2; }
.text-link { margin-top: 16px; color: var(--blue); display: inline-flex; align-items: center; gap: 7px; font-weight: 600; }
.about-media { position: relative; min-height: 410px; }
.about-media img { width: 100%; height: 410px; object-fit: cover; border: 9px solid #fff; }
.about-badge { position: absolute; left: -34px; bottom: 24px; width: 130px; height: 100px; color: #fff; background: var(--green); display: grid; place-content: center; text-align: center; box-shadow: 0 10px 30px rgba(26,57,84,.2); }
.about-badge strong { font: 700 33px/1 Arial, sans-serif; }
.about-badge span { margin-top: 8px; font-size: 12px; }

.lifting-section { background: #fff; }
.lifting-layout { display: grid; grid-template-columns: 1fr 360px; gap: 24px; align-items: start; }
.crane-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.crane-list article { min-height: 116px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 40px 1fr; gap: 13px; }
.crane-list span { color: #a6bbc9; font: 700 20px/1 Arial, sans-serif; }
.crane-list p { margin: 0; color: #566570; font-size: 13px; line-height: 1.75; }
.no-lift-panel { position: sticky; top: 18px; padding: 28px; color: #fff; background: #263846; border-top: 4px solid var(--yellow); }
.panel-title { padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.14); display: flex; gap: 14px; align-items: center; }
.panel-title > svg { width: 38px; height: 38px; color: var(--yellow); }
.panel-title small { color: rgba(255,255,255,.54); font: 700 11px/1 Arial, sans-serif; }
.panel-title h3 { margin: 4px 0 0; font-size: 22px; }
.no-lift-panel ul { margin: 20px 0 0; padding: 0; list-style: none; }
.no-lift-panel li { padding: 13px 0 13px 28px; border-bottom: 1px solid rgba(255,255,255,.1); position: relative; color: rgba(255,255,255,.78); font-size: 13px; }
.no-lift-panel li::before { content: "!"; position: absolute; left: 0; top: 14px; width: 18px; height: 18px; border-radius: 50%; color: #1e2d37; background: var(--yellow); display: grid; place-items: center; font-weight: 800; line-height: 1; }
.risk-table-wrap { margin-top: 32px; border: 1px solid var(--line); }
.risk-table-head { padding: 20px 24px; background: #f4f7f8; display: flex; align-items: center; justify-content: space-between; }
.risk-table-head small { color: var(--blue); font: 700 11px/1 Arial, sans-serif; }
.risk-table-head h3 { margin: 5px 0 0; font-size: 22px; }
.risk-table-head > span { color: #8b949b; font-size: 12px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; min-width: 860px; border-collapse: collapse; }
th, td { padding: 15px 18px; border-top: 1px solid var(--line); border-right: 1px solid var(--line); text-align: left; vertical-align: top; }
th:last-child, td:last-child { border-right: 0; }
th { color: #fff; background: var(--blue-deep); font-size: 13px; }
td { color: #566570; font-size: 13px; }
td:first-child { width: 120px; color: var(--blue-deep); font-weight: 700; }
td:nth-child(2) { width: 210px; }
td:nth-child(3) { width: 160px; }
td:nth-child(3) span { display: inline-block; padding: 2px 7px; color: #99433e; background: #faecea; }

.friend-links { padding: 14px 0; color: #687680; background: #e9edef; font-size: 13px; }
.friend-links .wrap { display: flex; gap: 24px; flex-wrap: wrap; }
.friend-links span { color: #263846; font-weight: 700; }
.friend-links a:hover { color: var(--blue); }
.footer-main { padding: 50px 0; color: rgba(255,255,255,.72); background: #1f2b34; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr .8fr 1.5fr; gap: 40px; }
.footer-brand { display: flex; flex-direction: column; }
.footer-brand > strong { color: #fff; font-size: 25px; }
.footer-brand > span { color: #a9b4bc; }
.footer-brand p { margin: 20px 0 0; }
.footer-brand b { color: #fff; font: 700 30px/1.3 Arial, sans-serif; }
.footer-grid h3 { margin: 0 0 15px; color: #fff; font-size: 16px; }
.footer-grid > div:not(.footer-brand) > a { display: block; margin: 7px 0; font-size: 13px; }
.footer-grid a:hover { color: #fff; }
.footer-contact p { margin: 8px 0; display: flex; gap: 8px; align-items: flex-start; font-size: 13px; }
.footer-contact svg { flex: 0 0 16px; width: 16px; margin-top: 4px; color: var(--yellow); }
.copyright { padding: 12px; color: #7d8991; background: #182128; text-align: center; font-size: 12px; }

.floating-tools { position: fixed; z-index: 30; right: 22px; top: 50%; display: grid; gap: 3px; transform: translateY(-50%); }
.floating-tools a, .floating-tools button { width: 44px; height: 44px; border: 0; color: #fff; background: rgba(27,59,79,.72); display: grid; place-items: center; cursor: pointer; }
.floating-tools a:hover, .floating-tools button:hover { background: var(--blue); }
.floating-tools svg { width: 20px; height: 20px; }

@media (max-width: 1100px) {
  .header-inner { grid-template-columns: 1fr auto; }
  .site-search { display: none; }
  .brand-slogan, .brand-line { display: none; }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .rule-layout { grid-template-columns: 340px 1fr; }
  .forklift-rules { grid-template-columns: 1fr; }
  .limit-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr 46%; gap: 40px; }
  .lifting-layout { grid-template-columns: 1fr 320px; }
  .footer-grid { grid-template-columns: 1.2fr .8fr .8fr 1.2fr; gap: 24px; }
}

@media (max-width: 820px) {
  .wrap { width: min(100% - 28px, var(--wrap)); }
  .topbar { display: none; }
  .main-header { height: 76px; }
  .header-inner { grid-template-columns: 1fr auto; gap: 12px; }
  .brand-mark { flex-basis: 46px; width: 46px; height: 42px; }
  .brand-mark svg { width: 24px; height: 24px; }
  .brand-name { margin-left: 8px; }
  .brand-name strong { font-size: 18px; }
  .brand-name small { font-size: 8px; }
  .hotline { display: none; }
  .menu-toggle { width: 42px; height: 42px; border: 1px solid var(--line); color: var(--blue); background: #fff; display: grid; place-items: center; cursor: pointer; }
  .primary-nav { position: absolute; top: 76px; left: 0; right: 0; height: auto; display: none; }
  .primary-nav.open { display: block; }
  .nav-inner { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  .nav-inner a { width: 100%; height: 52px; }
  .hero, .hero-content { min-height: 520px; }
  .hero-content { padding-top: 100px; }
  .hero-content > p:not(.hero-eyebrow) { font-size: 18px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 190px; }
  .hero-arrow { display: none; }
  .section { padding: 62px 0; }
  .section-heading > p { font-size: 26px; }
  .section-heading h2 { font-size: 23px; }
  .section-heading h2 span { width: 28px; }
  .advantage-grid { grid-template-columns: 1fr; }
  .rule-layout { grid-template-columns: 1fr; }
  .rule-figure img { min-height: 290px; max-height: 380px; }
  .rule-panel { padding: 26px 22px; }
  .rule-panel-head { align-items: flex-start; gap: 15px; }
  .consult-inner { grid-template-columns: 1fr auto; gap: 14px; }
  .consult-inner .btn { grid-column: 1 / -1; justify-self: start; }
  .process-line { grid-template-columns: repeat(4, 1fr); gap: 22px 4px; }
  .process-line::before { display: none; }
  .process-line svg { width: 64px; height: 64px; padding: 17px; }
  .about-inner { grid-template-columns: 1fr; }
  .about-media { order: -1; }
  .lifting-layout { grid-template-columns: 1fr; }
  .no-lift-panel { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .floating-tools { right: 8px; }
}

@media (max-width: 560px) {
  body { font-size: 14px; }
  .hero, .hero-content { min-height: 470px; }
  .hero-content { padding-top: 88px; }
  .hero h1 { font-size: 34px; }
  .hero-content > p:not(.hero-eyebrow) { padding: 0 18px; font-size: 16px; }
  .category-tabs { display: grid; grid-template-columns: repeat(3, 1fr); }
  .category-tabs button { min-width: 0; padding: 10px 5px; font-size: 13px; }
  .material-grid { grid-template-columns: 1fr; }
  .material-visual { height: 190px; }
  .limit-grid { grid-template-columns: 1fr; }
  .rule-panel-head { display: block; }
  .consult-inner { display: flex; flex-direction: column; align-items: flex-start; }
  .consult-inner h2 { font-size: 21px; }
  .consult-inner > strong { font-size: 27px; }
  .process-line { grid-template-columns: repeat(3, 1fr); }
  .about-media, .about-media img { min-height: 0; height: 290px; }
  .about-badge { left: 12px; bottom: -18px; }
  .crane-list { grid-template-columns: 1fr; }
  .risk-table-head { display: block; }
  .risk-table-head > span { display: block; margin-top: 8px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:nth-child(2), .footer-grid > div:nth-child(3) { display: none; }
  .friend-links .wrap { gap: 10px 18px; }
  .floating-tools a:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}