/* ============================================================
   Shandong Truck Supply Chain — Heavy Truck Export
   Industrial modern style · responsive · no framework
   ============================================================ */
:root {
  --dark: #14181d;
  --dark-2: #1c232b;
  --dark-3: #232c36;
  --accent: #f6821f;
  --accent-2: #ff9a3c;
  --text: #2b323a;
  --muted: #6b7683;
  --line: #e6e9ee;
  --bg: #f5f6f8;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(16, 24, 32, .10);
  --font-head: "Barlow Condensed", "Arial Narrow", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  --font-body: "Barlow", "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }
section { padding: 84px 0; }

h1, h2, h3, .h-font { font-family: var(--font-head); font-weight: 600; letter-spacing: .5px; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- top bar ---------- */
.topbar {
  background: var(--dark);
  color: #c8d0d9;
  font-size: 13.5px;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 40px; }
.topbar a:hover { color: var(--accent-2); }
.topbar .tb-left span { margin-right: 22px; }
.topbar .tb-right a { margin-left: 20px; }
.topbar svg { width: 14px; height: 14px; vertical-align: -2px; margin-right: 5px; fill: var(--accent); }

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 900;
  background: rgba(20, 24, 29, .97);
  backdrop-filter: blur(6px);
  box-shadow: 0 2px 14px rgba(0, 0, 0, .25);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 12px; color: #fff; }
.logo-badge {
  width: 44px; height: 44px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #d96a0e);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 22px; font-weight: 700; color: #fff;
}
.logo-text { line-height: 1.15; }
.logo-text b { font-family: var(--font-head); font-size: 21px; letter-spacing: 1.5px; display: block; }
.logo-text small { color: #9aa6b2; font-size: 11.5px; letter-spacing: 2.2px; text-transform: uppercase; }

.nav ul { display: flex; align-items: center; gap: 6px; }
.nav > ul > li { position: relative; }
.nav > ul > li > a {
  display: block; padding: 26px 16px; color: #dfe5ec;
  font-size: 15px; font-weight: 500; letter-spacing: .4px;
  border-bottom: 3px solid transparent; transition: .2s;
}
.nav > ul > li > a:hover, .nav > ul > li.active > a { color: var(--accent-2); border-bottom-color: var(--accent); }
.nav .dropdown {
  position: absolute; top: 100%; left: 0; min-width: 260px;
  background: #fff; border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow); padding: 8px 0;
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: .22s;
}
.nav li:hover .dropdown { opacity: 1; visibility: visible; transform: none; }
.nav .dropdown a { display: block; padding: 10px 20px; color: var(--text); font-size: 14.5px; }
.nav .dropdown a:hover { background: var(--bg); color: var(--accent); padding-left: 26px; }
.nav .dropdown .drop-group { padding: 8px 20px 4px; font-size: 12px; letter-spacing: 1.5px; color: var(--muted); text-transform: uppercase; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #fff !important;
  padding: 12px 26px; border-radius: 6px; border: none; cursor: pointer;
  font-family: var(--font-head); font-size: 16px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
  transition: .2s;
}
.btn:hover { background: #d96a0e; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(246, 130, 31, .35); }
.btn.ghost { background: transparent; border: 2px solid rgba(255, 255, 255, .55); }
.btn.ghost:hover { border-color: var(--accent); background: rgba(246, 130, 31, .12); box-shadow: none; }
.btn.dark { background: var(--dark-2); }
.btn.sm { padding: 9px 18px; font-size: 14px; }

.nav .btn { margin-left: 14px; padding: 10px 20px; }

/* hamburger */
.burger { display: none; background: none; border: none; cursor: pointer; width: 42px; height: 42px; }
.burger span { display: block; width: 26px; height: 3px; background: #fff; margin: 5px auto; border-radius: 2px; transition: .25s; }
.burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- hero slider ---------- */
.hero { position: relative; height: min(88vh, 760px); min-height: 520px; overflow: hidden; background: var(--dark); }
.hero .slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease;
  display: flex; align-items: center;
}
.hero .slide.active { opacity: 1; z-index: 2; }
.hero .slide::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(13, 17, 21, .88) 0%, rgba(13, 17, 21, .55) 55%, rgba(13, 17, 21, .25) 100%);
}
.hero .slide img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero .slide-content { position: relative; z-index: 3; color: #fff; }
.hero .kicker {
  display: inline-block; color: var(--accent-2); font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase; font-size: 14px; margin-bottom: 14px;
  border-left: 4px solid var(--accent); padding-left: 12px;
}
.hero h1 { font-size: clamp(40px, 6vw, 68px); line-height: 1.05; text-transform: uppercase; max-width: 720px; }
.hero p { margin: 18px 0 30px; max-width: 560px; color: #d4dbe3; font-size: 17.5px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-dots { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 5; display: flex; gap: 10px; }
.hero-dots button { width: 34px; height: 4px; border: none; background: rgba(255, 255, 255, .35); cursor: pointer; border-radius: 2px; transition: .25s; }
.hero-dots button.active { background: var(--accent); }
.hero-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 52px; height: 52px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(20, 24, 29, .35); color: #fff; font-size: 22px; cursor: pointer; transition: .2s;
}
.hero-arrow:hover { background: var(--accent); border-color: var(--accent); }
.hero-arrow.prev { left: 26px; }
.hero-arrow.next { right: 26px; }

/* ---------- stats strip ---------- */
.stats { background: var(--dark-2); color: #fff; padding: 46px 0; }
.stats .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; text-align: center; }
.stats .num { font-family: var(--font-head); font-size: 46px; font-weight: 700; color: var(--accent-2); line-height: 1; }
.stats .num sup { font-size: 26px; }
.stats .lbl { color: #aab4bf; margin-top: 8px; font-size: 14.5px; letter-spacing: .5px; }

/* ---------- section titles ---------- */
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.sec-head .kicker { color: var(--accent); font-weight: 600; letter-spacing: 3px; text-transform: uppercase; font-size: 14px; }
.sec-head h2 { font-size: clamp(30px, 4vw, 44px); text-transform: uppercase; margin: 8px 0 12px; }
.sec-head p { color: var(--muted); }
.sec-head.left { text-align: left; margin-left: 0; }

/* ---------- category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cat-card {
  position: relative; height: 300px; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); display: block;
}
.cat-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.cat-card:hover img { transform: scale(1.08); }
.cat-card .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(15, 19, 24, 0) 30%, rgba(15, 19, 24, .92) 100%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: 22px;
  color: #fff;
}
.cat-card .overlay h3 { font-size: 24px; text-transform: uppercase; }
.cat-card .overlay span { color: var(--accent-2); font-size: 13.5px; letter-spacing: 1.5px; text-transform: uppercase; }
.cat-card .count {
  position: absolute; top: 16px; right: 16px; background: var(--accent); color: #fff;
  font-size: 12.5px; padding: 4px 12px; border-radius: 20px; font-weight: 600;
}

/* ---------- product cards ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.prod-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: 0 4px 18px rgba(16, 24, 32, .08); transition: .25s; display: flex; flex-direction: column;
  border: 1px solid var(--line);
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.prod-card .thumb { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--dark-2); }
.prod-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.prod-card:hover .thumb img { transform: scale(1.07); }
.prod-card .tag {
  position: absolute; top: 12px; left: 12px; background: rgba(20, 24, 29, .85); color: #ffb26b;
  font-size: 12px; padding: 4px 12px; border-radius: 4px; letter-spacing: 1px; text-transform: uppercase;
}
.prod-card .body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.prod-card h3 { font-size: 21px; line-height: 1.2; margin-bottom: 8px; }
.prod-card .spec-mini { color: var(--muted); font-size: 13.5px; margin-bottom: 14px; }
.prod-card .spec-mini b { color: var(--text); }
.prod-card .foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; }
.prod-card .foot a.more { color: var(--accent); font-weight: 600; font-size: 14.5px; letter-spacing: .5px; }
.prod-card .foot a.more:hover { color: #d96a0e; }

/* filter buttons */
.filters { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filters button {
  border: 1px solid var(--line); background: #fff; color: var(--text);
  padding: 9px 22px; border-radius: 30px; cursor: pointer; font-size: 14.5px; font-weight: 500; transition: .2s;
  font-family: var(--font-body);
}
.filters button:hover { border-color: var(--accent); color: var(--accent); }
.filters button.active { background: var(--dark); border-color: var(--dark); color: #fff; }

/* ---------- why choose us ---------- */
.why { background: var(--bg); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-card {
  background: #fff; border-radius: var(--radius); padding: 34px 26px; text-align: center;
  border-top: 4px solid var(--accent); box-shadow: 0 4px 18px rgba(16, 24, 32, .06); transition: .25s;
}
.why-card:hover { transform: translateY(-6px); }
.why-card .icon {
  width: 66px; height: 66px; margin: 0 auto 18px; border-radius: 50%;
  background: rgba(246, 130, 31, .12); display: flex; align-items: center; justify-content: center;
}
.why-card .icon svg { width: 30px; height: 30px; fill: var(--accent); }
.why-card h3 { font-size: 21px; margin-bottom: 8px; text-transform: uppercase; }
.why-card p { color: var(--muted); font-size: 14.5px; }

/* ---------- about split ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.split .img-wrap { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.split .img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.split .img-wrap .exp-badge {
  position: absolute; bottom: 0; left: 0; background: var(--accent); color: #fff;
  padding: 18px 30px; font-family: var(--font-head); text-align: center; border-radius: 0 var(--radius) 0 0;
}
.split .img-wrap .exp-badge b { font-size: 40px; display: block; line-height: 1; }
.split .img-wrap .exp-badge span { font-size: 13px; letter-spacing: 1px; text-transform: uppercase; }
.split h2 { font-size: clamp(28px, 3.6vw, 40px); text-transform: uppercase; margin: 8px 0 16px; }
.split p { color: var(--muted); margin-bottom: 14px; }
.check-list { margin: 18px 0 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
.check-list li { position: relative; padding-left: 28px; font-size: 15px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 17px; height: 17px;
  background: var(--accent); border-radius: 50%;
  -webkit-mask: none;
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 8px; width: 7px; height: 4px;
  border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg);
}

/* ---------- process ---------- */
.process { background: var(--dark); color: #fff; }
.process .sec-head h2 { color: #fff; }
.process .sec-head p { color: #9aa6b2; }
.proc-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.proc-step {
  background: var(--dark-2); border: 1px solid #2d3742; border-radius: var(--radius);
  padding: 28px 20px; text-align: center; position: relative; transition: .25s;
}
.proc-step:hover { border-color: var(--accent); transform: translateY(-5px); }
.proc-step .step-num {
  width: 46px; height: 46px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--accent); color: #fff; font-family: var(--font-head); font-size: 22px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.proc-step h3 { font-size: 18px; text-transform: uppercase; margin-bottom: 8px; color: #fff; }
.proc-step p { font-size: 13.5px; color: #9aa6b2; }

/* ---------- video section ---------- */
.video-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.video-card { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: var(--dark-2); }
.video-card video { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; background: #000; }
.video-card .vc-body { padding: 16px 22px; color: #fff; }
.video-card .vc-body h3 { font-size: 20px; text-transform: uppercase; }
.video-card .vc-body p { color: #9aa6b2; font-size: 14px; }

/* ---------- markets ---------- */
.markets { background: var(--bg); }
.market-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.market-tags span {
  background: #fff; border: 1px solid var(--line); border-radius: 30px; padding: 10px 24px;
  font-size: 14.5px; font-weight: 500; box-shadow: 0 2px 8px rgba(16, 24, 32, .05);
}
.market-tags span i { color: var(--accent); font-style: normal; margin-right: 6px; }

/* ---------- CTA banner ---------- */
.cta-banner {
  position: relative; padding: 90px 0; color: #fff; text-align: center;
  background: var(--dark-2) url("../img/cta-bg.jpg") center/cover no-repeat fixed;
}
.cta-banner::before { content: ""; position: absolute; inset: 0; background: rgba(15, 19, 24, .82); }
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner h2 { font-size: clamp(30px, 4.4vw, 48px); text-transform: uppercase; margin-bottom: 14px; }
.cta-banner p { color: #c6cfd9; max-width: 640px; margin: 0 auto 30px; }

/* ---------- contact / inquiry form ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; }
.contact-info .ci-item { display: flex; gap: 16px; margin-bottom: 26px; }
.contact-info .ci-item .ico {
  flex: 0 0 52px; height: 52px; border-radius: var(--radius);
  background: rgba(246, 130, 31, .12); display: flex; align-items: center; justify-content: center;
}
.contact-info .ci-item .ico svg { width: 24px; height: 24px; fill: var(--accent); }
.contact-info h4 { font-size: 19px; margin-bottom: 4px; font-family: var(--font-head); letter-spacing: .5px; }
.contact-info p { color: var(--muted); font-size: 15px; }
.form-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 38px; border-top: 4px solid var(--accent); }
.form-card h3 { font-size: 26px; text-transform: uppercase; margin-bottom: 6px; }
.form-card > p { color: var(--muted); font-size: 14.5px; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 6px; letter-spacing: .3px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px;
  font-family: var(--font-body); font-size: 15px; color: var(--text); background: #fbfcfd;
  transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); background: #fff; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 12px; }
.form-success {
  display: none; background: #e9f9ee; border: 1px solid #b9e8c6; color: #1c7a3d;
  padding: 14px 18px; border-radius: 6px; margin-top: 16px; font-size: 14.5px;
}

/* ---------- page hero (sub pages) ---------- */
.page-hero {
  position: relative; padding: 110px 0 90px; color: #fff; text-align: center;
  background: var(--dark-2) center/cover no-repeat;
}
.page-hero::before { content: ""; position: absolute; inset: 0; background: rgba(15, 19, 24, .78); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(34px, 5vw, 54px); text-transform: uppercase; }
.page-hero .crumbs { margin-top: 12px; font-size: 14.5px; color: #b9c3ce; }
.page-hero .crumbs a { color: var(--accent-2); }
.page-hero .crumbs a:hover { text-decoration: underline; }

/* ---------- product detail ---------- */
.pd-wrap { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; }
.gallery .main-img {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 4/3; background: var(--dark-2); cursor: zoom-in;
}
.gallery .main-img img { width: 100%; height: 100%; object-fit: cover; }
.gallery .thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 12px; }
.gallery .thumbs button {
  border: 2px solid transparent; border-radius: 6px; overflow: hidden; cursor: pointer;
  padding: 0; background: none; aspect-ratio: 4/3;
}
.gallery .thumbs button.active { border-color: var(--accent); }
.gallery .thumbs img { width: 100%; height: 100%; object-fit: cover; }
.pd-info .tag { display: inline-block; background: rgba(246, 130, 31, .12); color: var(--accent); font-size: 13px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; padding: 5px 14px; border-radius: 4px; margin-bottom: 14px; }
.pd-info h1 { font-size: clamp(28px, 3.6vw, 42px); text-transform: uppercase; line-height: 1.1; margin-bottom: 14px; }
.pd-info .lead { color: var(--muted); margin-bottom: 22px; }
.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec-table th, .spec-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.spec-table th { width: 42%; color: var(--muted); font-weight: 500; background: #fafbfc; }
.spec-table td { font-weight: 600; }
.pd-section { margin-top: 60px; }
.pd-section h2 { font-size: 28px; text-transform: uppercase; margin-bottom: 18px; border-left: 5px solid var(--accent); padding-left: 14px; }
.pd-section p { color: var(--muted); margin-bottom: 12px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 20px; }
.feature-grid .fg-item { background: var(--bg); border-radius: var(--radius); padding: 22px; }
.feature-grid .fg-item h4 { font-family: var(--font-head); font-size: 18px; letter-spacing: .5px; margin-bottom: 6px; text-transform: uppercase; }
.feature-grid .fg-item p { font-size: 14px; margin: 0; }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 1000; background: rgba(10, 13, 16, .94);
  display: none; align-items: center; justify-content: center; flex-direction: column;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 88vw; max-height: 82vh; border-radius: 8px; }
.lightbox .lb-close { position: absolute; top: 22px; right: 30px; background: none; border: none; color: #fff; font-size: 40px; cursor: pointer; }
.lightbox .lb-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,.1); border: none; color: #fff; font-size: 30px; width: 56px; height: 56px; border-radius: 50%; cursor: pointer; }
.lightbox .lb-nav:hover { background: var(--accent); }
.lightbox .lb-prev { left: 24px; }
.lightbox .lb-next { right: 24px; }
.lightbox .lb-count { color: #aab4bf; margin-top: 14px; font-size: 14px; letter-spacing: 1px; }

/* ---------- about page ---------- */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: 0 4px 18px rgba(16,24,32,.07); border-left: 4px solid var(--accent); }
.value-card h3 { font-size: 22px; text-transform: uppercase; margin-bottom: 10px; }
.value-card p { color: var(--muted); font-size: 14.5px; }
.milestones { position: relative; margin-top: 20px; }
.milestones::before { content: ""; position: absolute; left: 19px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.milestone { position: relative; padding: 0 0 30px 56px; }
.milestone .dot { position: absolute; left: 8px; top: 2px; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); border: 4px solid #fde8d2; }
.milestone h4 { font-family: var(--font-head); font-size: 20px; }
.milestone h4 span { color: var(--accent); margin-right: 10px; }
.milestone p { color: var(--muted); font-size: 14.5px; }

/* ---------- footer ---------- */
.footer { background: var(--dark); color: #9aa6b2; padding: 70px 0 0; font-size: 14.5px; }
.footer .grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; }
.footer h4 { color: #fff; font-family: var(--font-head); font-size: 19px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 18px; }
.footer .f-logo { display: flex; align-items: center; gap: 10px; color: #fff; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer a:hover { color: var(--accent-2); }
.footer .f-contact li { display: flex; gap: 10px; margin-bottom: 12px; }
.footer .f-contact svg { flex: 0 0 16px; width: 16px; height: 16px; fill: var(--accent); margin-top: 4px; }
.footer .copy { border-top: 1px solid #2a333d; padding: 20px 0; text-align: center; font-size: 13.5px; color: #77828e; }

/* ---------- floating buttons ---------- */
.float-wa {
  position: fixed; right: 22px; bottom: 22px; z-index: 950;
  width: 58px; height: 58px; border-radius: 50%; background: #25d366;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, .45); transition: .2s;
}
.float-wa:hover { transform: scale(1.08); }
.float-wa svg { width: 30px; height: 30px; fill: #fff; }
.float-top {
  position: fixed; right: 22px; bottom: 92px; z-index: 950;
  width: 44px; height: 44px; border-radius: 8px; border: none; cursor: pointer;
  background: var(--dark-2); color: #fff; font-size: 20px;
  opacity: 0; visibility: hidden; transition: .25s;
}
.float-top.show { opacity: 1; visibility: visible; }
.float-top:hover { background: var(--accent); }

/* ---------- side toolbar (floating customer service) ---------- */
.side-toolbar {
  position: fixed; right: 14px; top: 50%; transform: translateY(-50%); z-index: 960;
  display: flex; flex-direction: column; gap: 8px;
}
.st-item > a, .st-item > button {
  width: 76px; padding: 12px 6px; border: none; cursor: pointer; border-radius: 8px;
  background: var(--accent); color: #fff;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  font-family: var(--font-body); font-size: 12.5px; font-weight: 500;
  transition: .2s; box-shadow: 0 4px 14px rgba(246, 130, 31, .3);
}
.st-item > a:hover, .st-item > button:hover { background: #d96a0e; transform: translateX(-4px); }
.st-item svg { width: 24px; height: 24px; fill: #fff; }
.st-item .float-top { position: static; opacity: 1; visibility: visible; width: 76px; }
.st-pop { position: relative; }
.st-popup {
  position: absolute; right: 88px; top: 50%; transform: translateY(-50%) translateX(8px);
  background: #fff; border-radius: 10px; box-shadow: var(--shadow);
  padding: 18px 22px; min-width: 210px; text-align: center;
  opacity: 0; visibility: hidden; transition: .2s;
}
.st-pop:hover .st-popup { opacity: 1; visibility: visible; transform: translateY(-50%); }
.st-popup p { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.st-popup h4 { font-family: var(--font-head); font-size: 19px; color: var(--dark); letter-spacing: .5px; }

/* ---------- badge strip ---------- */
.badge-strip { background: #fff; border-bottom: 1px solid var(--line); padding: 18px 0; }
.badge-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.badge-row span {
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  border-radius: 30px; padding: 8px 20px; font-size: 13.5px; font-weight: 600; letter-spacing: .3px;
}

/* ---------- testimonials ---------- */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testi-card {
  background: #fff; border-radius: var(--radius); padding: 30px 28px;
  box-shadow: 0 4px 18px rgba(16, 24, 32, .07); position: relative;
}
.testi-card::before {
  content: "\201C"; position: absolute; top: 6px; left: 18px;
  font-family: Georgia, serif; font-size: 64px; color: rgba(246, 130, 31, .25); line-height: 1;
}
.testi-card p { position: relative; color: var(--text); font-size: 15px; margin-bottom: 18px; }
.testi-who b { display: block; font-family: var(--font-head); font-size: 18px; letter-spacing: .5px; }
.testi-who span { color: var(--muted); font-size: 13.5px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 18px 22px; font-family: var(--font-body); font-size: 16px; font-weight: 600; color: var(--text);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q i { font-style: normal; color: var(--accent); font-size: 24px; font-weight: 400; flex: 0 0 auto; transition: transform .25s; }
.faq-item.open .faq-q i { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 22px 20px; color: var(--muted); font-size: 15px; }
.faq-item.open { border-color: var(--accent); }

/* ---------- product search ---------- */
.search-box { max-width: 560px; margin: 0 auto 28px; }
.search-box input {
  width: 100%; border: 1px solid var(--line); border-radius: 30px; padding: 14px 26px;
  font-family: var(--font-body); font-size: 15.5px; background: #fff; box-shadow: 0 2px 10px rgba(16, 24, 32, .05);
}
.search-box input:focus { outline: none; border-color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .testi-grid { grid-template-columns: 1fr; }
  .cat-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .prod-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .proc-grid { grid-template-columns: repeat(3, 1fr); }
  .footer .grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .pd-wrap, .contact-wrap { grid-template-columns: 1fr; }
  .feature-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .side-toolbar { right: 8px; gap: 6px; }
  .st-item > a, .st-item > button { width: 58px; padding: 9px 4px; font-size: 10.5px; gap: 4px; }
  .st-item svg { width: 19px; height: 19px; }
  .st-popup { display: none; }
  section { padding: 60px 0; }
  .topbar .tb-left span:not(:first-child) { display: none; }
  .nav { position: fixed; inset: 74px 0 auto 0; background: var(--dark-2); max-height: 0; overflow: hidden; transition: max-height .3s ease; }
  .nav.open { max-height: 80vh; overflow-y: auto; }
  .nav ul { flex-direction: column; align-items: stretch; padding: 10px 0 20px; }
  .nav > ul > li > a { padding: 13px 24px; border: none; }
  .nav .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: var(--dark-3); border-radius: 0; display: none; }
  .nav li.open .dropdown { display: block; }
  .nav .dropdown a { color: #c8d0d9; }
  .nav .dropdown .drop-group { color: #77828e; }
  .nav .btn { margin: 14px 24px 0; justify-content: center; }
  .burger { display: block; }
  .hero { height: 72vh; }
  .hero-arrow { display: none; }
  .stats .grid { grid-template-columns: repeat(2, 1fr); gap: 30px 10px; }
  .proc-grid { grid-template-columns: 1fr 1fr; }
  .video-grid, .form-row { grid-template-columns: 1fr; }
  .gallery .thumbs { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 520px) {
  .cat-grid, .why-grid, .prod-grid, .prod-grid.cols-4, .feature-grid, .value-grid, .proc-grid { grid-template-columns: 1fr; }
  .footer .grid { grid-template-columns: 1fr; }
  .check-list { grid-template-columns: 1fr; }
}