/* ============================================================
   金华恒翔热能设备有限公司 · 官网站点样式
   工业风：深钢灰 #171a1e + 熔炉橙 #f26522
   ============================================================ */
:root {
  --ink: #171a1e;
  --ink-2: #23272c;
  --ink-3: #2e3339;
  --steel: #5c6570;
  --line: #e3e6ea;
  --paper: #f5f6f7;
  --white: #ffffff;
  --flame: #f26522;
  --flame-dark: #d1531a;
  --flame-soft: #fff3ec;
  --text: #2b2f34;
  --text-light: #7a828c;
  --radius: 6px;
  --shadow: 0 2px 16px rgba(23, 26, 30, 0.08);
  --shadow-lg: 0 12px 40px rgba(23, 26, 30, 0.14);
  --font: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --header-h: 78px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; border: 0; }
a { text-decoration: none; color: inherit; transition: color .2s, background .2s, border-color .2s; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }

.container { max-width: 1220px; margin: 0 auto; padding: 0 24px; }
.text-flame { color: var(--flame); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px; border-radius: 4px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: all .22s;
  white-space: nowrap;
}
.btn-primary { background: var(--flame); color: #fff; }
.btn-primary:hover { background: var(--flame-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(242,101,34,.34); }
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.12); }
.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------- 顶部通栏 ---------- */
.topbar { background: var(--ink); color: #98a1ab; font-size: 13px; padding: 9px 0; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.topbar-left { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar-item { display: inline-flex; align-items: center; gap: 7px; }
.topbar-item svg { width: 14px; height: 14px; fill: var(--flame); flex: none; }
.topbar a:hover { color: var(--flame); }
.topbar strong { color: var(--flame); font-weight: 700; letter-spacing: .5px; }

/* ---------- 头部导航 ---------- */
.header {
  background: #fff; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 300;
  transition: box-shadow .25s;
}
.header.scrolled { box-shadow: 0 4px 20px rgba(23,26,30,.09); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }

.brand { display: flex; align-items: center; gap: 13px; flex: none; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 5px;
  background: linear-gradient(140deg, var(--ink) 0%, var(--ink-3) 100%);
  color: var(--flame); display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 21px; letter-spacing: .5px; flex: none;
  position: relative; overflow: hidden;
}
.brand-mark::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 3px; background: var(--flame);
}
.brand-text { line-height: 1.25; }
.brand-name { font-size: 19px; font-weight: 700; color: var(--ink); letter-spacing: .3px; }
.brand-sub { font-size: 11px; color: var(--text-light); letter-spacing: 1.6px; }

.nav { display: flex; align-items: center; gap: 2px; }
.nav-item { position: relative; }
.nav-item > a {
  display: block; padding: 12px 18px; font-size: 15.5px;
  font-weight: 500; color: var(--ink); border-radius: 4px; position: relative;
}
.nav-item > a::after {
  content: ""; position: absolute; left: 18px; right: 18px; bottom: 6px;
  height: 2px; background: var(--flame); transform: scaleX(0); transition: transform .22s;
}
.nav-item:hover > a { color: var(--flame); }
.nav-item:hover > a::after { transform: scaleX(1); }
.nav-item.active > a { color: var(--flame); font-weight: 700; }
.nav-item.active > a::after { transform: scaleX(1); }

.dropdown {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 210px; background: #fff; border-radius: 6px;
  box-shadow: var(--shadow-lg); border-top: 3px solid var(--flame);
  padding: 8px 0; opacity: 0; visibility: hidden; transition: all .22s;
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown a {
  display: block; padding: 9px 22px; font-size: 14.5px; color: var(--text); white-space: nowrap;
}
.dropdown a:hover { background: var(--flame-soft); color: var(--flame); padding-left: 26px; }

.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.header-phone { display: flex; align-items: center; gap: 10px; }
.header-phone svg { width: 22px; height: 22px; fill: var(--flame); }
.header-phone small { display: block; font-size: 11px; color: var(--text-light); line-height: 1.2; }
.header-phone b { font-size: 17px; color: var(--ink); font-weight: 700; letter-spacing: .4px; }

.mobile-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 4px; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.mobile-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); transition: .25s; }
.mobile-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页轮播 ---------- */
.hero-slider { position: relative; height: 580px; overflow: hidden; background: var(--ink); }
.slide {
  position: absolute; inset: 0; opacity: 0; transition: opacity .9s ease;
  display: flex; align-items: center;
  background-size: cover; background-position: center;
}
.slide.active { opacity: 1; }
.slide::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(18,21,25,.94) 0%, rgba(23,26,30,.82) 45%, rgba(23,26,30,.35) 100%);
}
.slide-1 { background-image: url("../img/fuel-gas-hero.jpg"); background-color: #1a1e23; }
.slide-2 { background-image: url("../img/bio-hero.jpg"); background-color: #1a1e23; }
.slide-3 { background-image: url("../img/lss-10s.jpg"); background-color: #1a1e23; }

.slide-inner { position: relative; z-index: 2; max-width: 700px; color: #fff; }
.slide-tag {
  display: inline-block; padding: 5px 16px; border: 1px solid rgba(242,101,34,.75);
  color: var(--flame); font-size: 13px; letter-spacing: 2.5px; border-radius: 2px;
  margin-bottom: 24px;
}
.slide h1 {
  font-size: 50px; line-height: 1.24; font-weight: 800; letter-spacing: 1px;
  margin-bottom: 20px; text-shadow: 0 4px 24px rgba(0,0,0,.4);
}
.slide h1 em { color: var(--flame); font-style: normal; }
.slide p { font-size: 18px; color: #cfd5dc; max-width: 600px; margin-bottom: 36px; line-height: 1.85; }
.slide-btns { display: flex; gap: 14px; flex-wrap: wrap; }

.slider-dots { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); display: flex; gap: 12px; z-index: 5; }
.slider-dots i {
  width: 34px; height: 3px; background: rgba(255,255,255,.32); cursor: pointer;
  transition: .3s; border-radius: 2px;
}
.slider-dots i.active { background: var(--flame); width: 54px; }

.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 5;
  width: 48px; height: 48px; border: 1px solid rgba(255,255,255,.28);
  background: rgba(23,26,30,.35); color: #fff; cursor: pointer; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; transition: .22s;
}
.slider-arrow:hover { background: var(--flame); border-color: var(--flame); }
.slider-arrow svg { width: 20px; height: 20px; fill: #fff; }
.slider-arrow.prev { left: 28px; }
.slider-arrow.next { right: 28px; }

/* ---------- 数据条 ---------- */
.stats { background: var(--ink-2); color: #fff; padding: 46px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 12%; height: 76%; width: 1px;
  background: rgba(255,255,255,.13);
}
.stat b { display: block; font-size: 44px; font-weight: 800; color: var(--flame); line-height: 1.1; letter-spacing: -1px; }
.stat b span { font-size: 19px; font-weight: 600; margin-left: 2px; }
.stat p { color: #a7b0ba; font-size: 14.5px; margin-top: 8px; }

/* ---------- 通用版块 ---------- */
.section { padding: 84px 0; }
.section.alt { background: var(--paper); }
.section.tight { padding: 62px 0; }
.dark-section {
  padding: 84px 0; color: #fff; position: relative;
  background: linear-gradient(120deg, #171a1e 0%, #23272c 60%, #2b3036 100%);
}
.dark-section::after {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.022) 0 2px, transparent 2px 5px);
  pointer-events: none;
}
.dark-section .container { position: relative; z-index: 2; }

.section-head { margin-bottom: 50px; }
.section-head.center { text-align: center; }
.kicker {
  font-size: 13px; letter-spacing: 3.5px; color: var(--flame);
  font-weight: 700; margin-bottom: 12px; text-transform: uppercase;
}
.section-head h2 { font-size: 36px; font-weight: 800; color: var(--ink); letter-spacing: .5px; line-height: 1.3; }
.dark-section .section-head h2 { color: #fff; }
.section-head .rule { width: 56px; height: 4px; background: var(--flame); margin-top: 18px; border-radius: 2px; }
.section-head.center .rule { margin-left: auto; margin-right: auto; }
.section-head p.desc { margin-top: 18px; color: var(--text-light); font-size: 16.5px; max-width: 760px; }
.section-head.center p.desc { margin-left: auto; margin-right: auto; }
.dark-section .section-head p.desc { color: #a7b0ba; }

/* ---------- 卡片网格 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; position: relative; transition: all .25s; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px;
  background: var(--flame); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card .num {
  position: absolute; right: 22px; top: 16px;
  font-size: 52px; font-weight: 800; color: #f0f2f4; line-height: 1; letter-spacing: -2px;
}
.card .icon { font-size: 30px; color: var(--flame); margin-bottom: 16px; line-height: 1; }
.card h3 { font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 12px; }
.card p { color: var(--text-light); font-size: 15px; }
.card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.card .tags span {
  font-size: 12.5px; padding: 4px 12px; background: var(--flame-soft);
  color: var(--flame-dark); border-radius: 20px;
}
.dark-section .card { background: rgba(255,255,255,.055); border-color: rgba(255,255,255,.1); }
.dark-section .card h3 { color: #fff; }
.dark-section .card p { color: #a7b0ba; }
.dark-section .card .num { color: rgba(255,255,255,.06); }
.dark-section .card .tags span { background: rgba(242,101,34,.18); color: #ffb289; }

/* ---------- 产品分类卡（首页） ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.prod-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .25s; display: block;
}
.prod-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: rgba(242,101,34,.4); }
.prod-card .thumb { height: 186px; overflow: hidden; background: #eef1f3; position: relative; }
.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 .body { padding: 22px 22px 24px; }
.prod-card h3 { font-size: 17.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.prod-card p { font-size: 13.5px; color: var(--text-light); line-height: 1.65; min-height: 44px; }
.prod-card .more {
  margin-top: 14px; font-size: 13px; color: var(--flame); font-weight: 600;
  display: inline-flex; align-items: center; gap: 5px;
}
.prod-card .more::after { content: "→"; transition: transform .22s; }
.prod-card:hover .more::after { transform: translateX(4px); }
.prod-badge {
  position: absolute; left: 0; top: 14px; background: var(--flame); color: #fff;
  font-size: 12px; padding: 3px 12px; border-radius: 0 3px 3px 0; font-weight: 600;
}
/* 无实拍图占位 */
.thumb.ph {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  background: linear-gradient(135deg, #23272c 0%, #2e3339 60%, #3a4048 100%);
  position: relative;
}
.thumb.ph::after {
  content: ""; position: absolute; inset: 0;
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 2px, transparent 2px 6px);
}
.thumb.ph .ph-icon { font-size: 40px; color: var(--flame); line-height: 1; position: relative; z-index: 2; }
.thumb.ph .ph-text { font-size: 12.5px; color: #8b949e; letter-spacing: 2px; position: relative; z-index: 2; }
.thumb.ph img { position: relative; z-index: 2; }

/* ---------- 技术亮点 ---------- */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech-item {
  border-left: 3px solid var(--flame); padding: 6px 0 6px 22px;
}
.tech-item h4 { font-size: 17.5px; font-weight: 700; color: #fff; margin-bottom: 9px; }
.tech-item p { font-size: 14.5px; color: #a7b0ba; }

/* ---------- 应用领域 ---------- */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.industry {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: all .25s; position: relative; overflow: hidden;
}
.industry:hover { background: var(--ink); border-color: var(--ink); transform: translateY(-4px); }
.industry:hover h4 { color: #fff; }
.industry:hover p { color: #a7b0ba; }
.industry:hover .ind-icon { color: var(--flame); }
.ind-icon { font-size: 26px; color: var(--ink); margin-bottom: 14px; transition: color .25s; line-height: 1; }
.industry h4 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 10px; transition: color .25s; }
.industry p { font-size: 13.5px; color: var(--text-light); line-height: 1.7; transition: color .25s; }

/* ---------- 工程案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .25s; display: block;
}
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); }
.case-card .thumb { height: 210px; overflow: hidden; background: #eef1f3; }
.case-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .thumb img { transform: scale(1.06); }
.case-card .body { padding: 24px; }
.case-card .meta { font-size: 12.5px; color: var(--flame); font-weight: 600; letter-spacing: 1px; margin-bottom: 10px; }
.case-card h3 { font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 10px; line-height: 1.5; }
.case-card p { font-size: 14px; color: var(--text-light); }

/* ---------- 服务流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.step { text-align: center; position: relative; padding-top: 8px; }
.step .circle {
  width: 62px; height: 62px; margin: 0 auto 18px; border-radius: 50%;
  background: #fff; border: 2px solid var(--line); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 21px; font-weight: 800; transition: all .28s; position: relative; z-index: 2;
}
.step:hover .circle { background: var(--flame); border-color: var(--flame); color: #fff; transform: scale(1.06); }
.step h4 { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-bottom: 9px; }
.step p { font-size: 13.5px; color: var(--text-light); line-height: 1.65; }
.step::after {
  content: ""; position: absolute; top: 38px; left: 62%; width: 76%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--line) 0 7px, transparent 7px 14px);
}
.step:last-child::after { display: none; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: all .25s; display: flex; gap: 20px; align-items: flex-start;
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: rgba(242,101,34,.35); }
.news-date {
  flex: none; width: 68px; text-align: center; border-right: 1px solid var(--line); padding-right: 18px;
}
.news-date b { display: block; font-size: 30px; font-weight: 800; color: var(--flame); line-height: 1.05; }
.news-date span { font-size: 12.5px; color: var(--text-light); }
.news-card h3 { font-size: 16.5px; font-weight: 700; color: var(--ink); line-height: 1.55; margin-bottom: 9px; }
.news-card p { font-size: 13.5px; color: var(--text-light); }

/* ---------- 服务保障条 ---------- */
.guarantee { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.guarantee-item { text-align: center; padding: 0 10px; }
.guarantee-item .g-icon {
  width: 68px; height: 68px; margin: 0 auto 16px; border-radius: 50%;
  background: var(--flame-soft); display: flex; align-items: center; justify-content: center;
}
.guarantee-item .g-icon svg { width: 30px; height: 30px; fill: var(--flame); }
.guarantee-item h4 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 9px; }
.guarantee-item p { font-size: 14px; color: var(--text-light); }

/* ---------- CTA 条 ---------- */
.cta-band {
  background: linear-gradient(100deg, var(--flame) 0%, #e85a12 100%);
  color: #fff; padding: 56px 0; position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 300px; height: 300px;
  border: 40px solid rgba(255,255,255,.08); border-radius: 50%;
}
.cta-band .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; position: relative; z-index: 2; }
.cta-band h2 { font-size: 30px; font-weight: 800; margin-bottom: 8px; }
.cta-band p { font-size: 15.5px; opacity: .92; }
.cta-band .btn-white { background: #fff; color: var(--flame); }
.cta-band .btn-white:hover { background: var(--ink); color: #fff; }

/* ---------- 页脚 ---------- */
.footer { background: var(--ink); color: #8b949e; padding: 64px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 46px; }
.footer-brand { display: flex; align-items: center; gap: 13px; margin-bottom: 20px; }
.footer-brand .brand-mark { background: rgba(255,255,255,.08); }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: #6d757e; }
.footer-about { line-height: 1.85; font-size: 13.5px; color: #8b949e; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--flame); }
.footer-links li { margin-bottom: 11px; }
.footer-links a { font-size: 13.5px; }
.footer-links a:hover { color: var(--flame); padding-left: 5px; }
.footer-contact li { display: flex; gap: 11px; margin-bottom: 14px; font-size: 13.5px; line-height: 1.7; }
.footer-contact svg { width: 16px; height: 16px; fill: var(--flame); flex: none; margin-top: 4px; }
.footer-contact b { color: #fff; font-size: 16px; letter-spacing: .5px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 12.5px; color: #6d757e;
}

/* ---------- 悬浮侧栏 ---------- */
.side-float {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%);
  z-index: 400; display: flex; flex-direction: column; gap: 8px;
}
.side-btn {
  width: 56px; height: 56px; border-radius: 8px; background: #fff;
  border: 1px solid var(--line); box-shadow: var(--shadow);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer; transition: all .2s; color: var(--ink); gap: 2px;
}
.side-btn svg { width: 21px; height: 21px; fill: var(--ink); transition: fill .2s; }
.side-btn span { font-size: 10.5px; color: var(--text-light); line-height: 1; }
.side-btn:hover { background: var(--flame); border-color: var(--flame); }
.side-btn:hover svg { fill: #fff; }
.side-btn:hover span { color: #fff; }
.side-btn.primary { background: var(--flame); border-color: var(--flame); }
.side-btn.primary svg { fill: #fff; }
.side-btn.primary span { color: #fff; }
.side-btn.primary:hover { background: var(--flame-dark); }
.side-qr { position: relative; }
.side-qr-pop {
  position: absolute; right: 68px; top: 50%; transform: translateY(-50%) scale(.94);
  background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 14px;
  box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: all .22s; text-align: center;
}
.side-qr:hover .side-qr-pop { opacity: 1; visibility: visible; transform: translateY(-50%) scale(1); }
.side-qr-pop img, .side-qr-pop .qr-ph {
  width: 128px; height: 128px; border-radius: 4px; background: #f2f4f6;
  display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--text-light);
}
.side-qr-pop p { font-size: 12.5px; margin-top: 8px; color: var(--text); white-space: nowrap; }
#backTop { display: none; }
#backTop.show { display: flex; }

/* ============================================================
   AI 在线咨询窗口（帕莱顿式交互）
   ============================================================ */
.chat-launcher {
  position: fixed; right: 18px; bottom: 24px; z-index: 401;
  display: flex; align-items: center; gap: 10px;
  background: var(--flame); color: #fff; border: 0; cursor: pointer;
  padding: 13px 20px 13px 16px; border-radius: 30px;
  box-shadow: 0 10px 30px rgba(242,101,34,.42); transition: all .24s;
}
.chat-launcher:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(242,101,34,.5); }
.chat-launcher svg { width: 21px; height: 21px; fill: #fff; }
.chat-launcher b { font-size: 15px; font-weight: 600; letter-spacing: .3px; }
.chat-launcher .dot {
  position: absolute; right: 4px; top: 4px; width: 11px; height: 11px;
  background: #34c759; border: 2px solid #fff; border-radius: 50%;
}
.chat-launcher.hide { opacity: 0; visibility: hidden; transform: scale(.85); }

.chat-panel {
  position: fixed; right: 18px; bottom: 24px; z-index: 402;
  width: 400px; height: 620px; max-height: calc(100vh - 48px);
  background: #fff; border-radius: 10px; box-shadow: 0 20px 60px rgba(23,26,30,.3);
  display: flex; flex-direction: column; overflow: hidden;
  opacity: 0; visibility: hidden; transform: translateY(18px) scale(.97);
  transition: all .26s cubic-bezier(.22,.61,.36,1);
}
.chat-panel.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }

.chat-head {
  background: linear-gradient(135deg, #8a9096 0%, #6f767d 100%);
  color: #fff; padding: 22px 20px 20px; text-align: center; position: relative; flex: none;
}
.chat-head .chat-close {
  position: absolute; right: 14px; top: 14px; width: 30px; height: 30px;
  border: 0; background: rgba(255,255,255,.22); border-radius: 6px; color: #fff;
  cursor: pointer; font-size: 17px; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.chat-head .chat-close:hover { background: rgba(255,255,255,.36); }
.chat-head .chat-min {
  position: absolute; right: 52px; top: 14px; width: 30px; height: 30px;
  border: 0; background: rgba(255,255,255,.22); border-radius: 6px; color: #fff;
  cursor: pointer; font-size: 17px; line-height: 1; display: flex; align-items: center; justify-content: center;
}
.chat-head .chat-min:hover { background: rgba(255,255,255,.36); }
.chat-avatar {
  width: 62px; height: 62px; margin: 0 auto 12px; border-radius: 50%;
  background: #fff; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,.16); overflow: hidden;
}
.chat-avatar svg { width: 40px; height: 40px; }
.chat-head h3 { font-size: 21px; font-weight: 700; letter-spacing: 2px; }
.chat-head p { font-size: 12.5px; opacity: .88; margin-top: 5px; }

.chat-body {
  flex: 1; overflow-y: auto; padding: 18px 16px; background: #f7f8f9;
  display: flex; flex-direction: column; gap: 16px;
}
.chat-body::-webkit-scrollbar { width: 6px; }
.chat-body::-webkit-scrollbar-thumb { background: #ccd2d8; border-radius: 3px; }

.msg-time { font-size: 12px; color: #9aa1a9; margin-bottom: 7px; }
.msg-row { display: flex; flex-direction: column; }
.msg-row.bot { align-items: flex-start; }
.msg-row.user { align-items: flex-end; }
.bubble {
  max-width: 84%; padding: 13px 16px; border-radius: 10px;
  font-size: 14.5px; line-height: 1.75; word-break: break-word; white-space: pre-wrap;
}
.msg-row.bot .bubble {
  background: #fff; color: var(--text); border: 1px solid #e9ecef;
  border-top-left-radius: 2px; box-shadow: 0 1px 4px rgba(23,26,30,.05);
}
.msg-row.user .bubble {
  background: var(--flame); color: #fff; border-top-right-radius: 2px;
  box-shadow: 0 2px 8px rgba(242,101,34,.28);
}
.bubble a { color: var(--flame); text-decoration: underline; }
.bubble ul { margin: 8px 0 0; padding-left: 18px; list-style: disc; }
.bubble li { margin-bottom: 4px; }
.bubble .b-title { font-weight: 700; color: var(--ink); display: block; margin-bottom: 5px; }
.bubble .b-note { display: block; margin-top: 8px; font-size: 12.5px; color: #98a1aa; }

.quick-replies { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.quick-replies button {
  background: #fff; border: 1px solid rgba(242,101,34,.45); color: var(--flame-dark);
  padding: 7px 14px; border-radius: 16px; font-size: 13px; cursor: pointer; transition: .2s;
}
.quick-replies button:hover { background: var(--flame); border-color: var(--flame); color: #fff; }

.typing { display: flex; gap: 4px; padding: 14px 16px; background: #fff; border: 1px solid #e9ecef; border-radius: 10px; border-top-left-radius: 2px; width: fit-content; }
.typing i { width: 7px; height: 7px; background: #c3cad1; border-radius: 50%; animation: bounce 1.3s infinite; }
.typing i:nth-child(2) { animation-delay: .18s; }
.typing i:nth-child(3) { animation-delay: .36s; }
@keyframes bounce { 0%,60%,100% { transform: translateY(0); opacity: .5; } 30% { transform: translateY(-5px); opacity: 1; } }

.chat-foot { flex: none; border-top: 1px solid var(--line); background: #fff; padding: 12px 14px; }
.chat-input-row {
  display: flex; align-items: center; gap: 10px; background: #f4f6f7;
  border-radius: 22px; padding: 8px 8px 8px 16px; border: 1px solid transparent; transition: border-color .2s;
}
.chat-input-row:focus-within { border-color: rgba(242,101,34,.5); background: #fff; }
.chat-input-row input {
  flex: 1; border: 0; background: transparent; font-size: 14.5px; color: var(--text); min-width: 0;
}
.chat-input-row input::placeholder { color: #a8b0b8; }
.chat-emoji { background: none; border: 0; cursor: pointer; font-size: 20px; line-height: 1; color: #9aa1a9; padding: 0 2px; }
.chat-send {
  width: 38px; height: 38px; border-radius: 50%; border: 0; background: var(--flame);
  cursor: pointer; display: flex; align-items: center; justify-content: center; flex: none; transition: .2s;
}
.chat-send:hover { background: var(--flame-dark); }
.chat-send:disabled { background: #d4d9de; cursor: not-allowed; }
.chat-send svg { width: 17px; height: 17px; fill: #fff; margin-left: 2px; }
.chat-tip { font-size: 11.5px; color: #a8b0b8; text-align: center; margin-top: 8px; }
.emoji-panel {
  display: none; flex-wrap: wrap; gap: 6px; padding: 10px 4px 4px; max-height: 96px; overflow-y: auto;
}
.emoji-panel.show { display: flex; }
.emoji-panel button { background: none; border: 0; font-size: 19px; cursor: pointer; padding: 3px 5px; border-radius: 4px; }
.emoji-panel button:hover { background: #f0f2f4; }

/* ============================================================
   内页：Banner
   ============================================================ */
.page-banner {
  background: linear-gradient(115deg, rgba(23,26,30,.96) 0%, rgba(35,39,44,.9) 60%, rgba(46,51,57,.78) 100%),
              repeating-linear-gradient(45deg, #1a1d21 0 2px, #202429 2px 4px);
  color: #fff; padding: 68px 0 62px; position: relative; overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; right: -100px; bottom: -140px; width: 420px; height: 420px;
  border: 50px solid rgba(242,101,34,.09); border-radius: 50%;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { font-size: 40px; font-weight: 800; letter-spacing: 1px; margin-bottom: 14px; }
.page-banner p { color: #b6bec7; font-size: 16px; max-width: 720px; }
.crumb { font-size: 13.5px; color: #8b949e; margin-bottom: 18px; }
.crumb a:hover { color: var(--flame); }
.crumb span { color: var(--flame); }

/* ============================================================
   产品中心
   ============================================================ */
.prod-layout { display: grid; grid-template-columns: 250px 1fr; gap: 44px; align-items: start; }
.prod-aside { position: sticky; top: calc(var(--header-h) + 18px); }
.aside-title {
  background: var(--ink); color: #fff; font-size: 17px; font-weight: 700;
  padding: 16px 22px; border-radius: var(--radius) var(--radius) 0 0; letter-spacing: .5px;
}
.aside-nav { border: 1px solid var(--line); border-top: 0; border-radius: 0 0 var(--radius) var(--radius); overflow: hidden; background: #fff; }
.aside-nav a {
  display: block; padding: 13px 22px; font-size: 14.5px; color: var(--text);
  border-bottom: 1px solid var(--line); position: relative;
}
.aside-nav a:last-child { border-bottom: 0; }
.aside-nav a:hover { background: var(--flame-soft); color: var(--flame); padding-left: 27px; }
.aside-nav a.active { background: var(--flame); color: #fff; font-weight: 600; }
.aside-nav a.active::after { content: "›"; position: absolute; right: 18px; }
.aside-help {
  margin-top: 20px; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 22px; text-align: center;
}
.aside-help h4 { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.aside-help p { font-size: 13px; color: var(--text-light); margin-bottom: 16px; }
.aside-help b { display: block; font-size: 20px; color: var(--flame); font-weight: 800; margin-bottom: 14px; letter-spacing: .5px; }

.product-block {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 34px 38px; margin-bottom: 30px; scroll-margin-top: calc(var(--header-h) + 20px);
}
.product-block > h3 {
  font-size: 24px; font-weight: 800; color: var(--ink); margin-bottom: 10px;
  padding-left: 16px; border-left: 4px solid var(--flame); line-height: 1.35;
}
.product-block .sub { font-size: 14.5px; color: var(--text-light); margin-bottom: 22px; line-height: 1.8; }
.product-media { margin: 0 0 22px; }
.product-media img {
  width: 100%; max-width: 420px; height: auto; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}

.table-scroll { overflow-x: auto; margin-bottom: 8px; -webkit-overflow-scrolling: touch; }
.table-scroll::-webkit-scrollbar { height: 7px; }
.table-scroll::-webkit-scrollbar-thumb { background: #ccd2d8; border-radius: 4px; }
table.spec { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 560px; }
table.spec th {
  background: var(--ink); color: #fff; padding: 13px 14px; text-align: left;
  font-weight: 600; font-size: 13.5px; white-space: nowrap; border: 1px solid var(--ink);
}
table.spec td {
  padding: 12px 14px; border: 1px solid var(--line); color: var(--text);
  vertical-align: middle; line-height: 1.6;
}
table.spec tr:nth-child(even) td { background: #fafbfc; }
table.spec tr:hover td { background: var(--flame-soft); }
table.spec td.model { font-weight: 700; color: var(--ink); background: #f7f8f9; white-space: nowrap; }
table.spec tr:hover td.model { background: #ffeadf; }

.spec-note {
  background: var(--flame-soft); border-left: 3px solid var(--flame);
  padding: 14px 18px; font-size: 13.5px; color: var(--flame-dark);
  border-radius: 0 4px 4px 0; margin-top: 16px; line-height: 1.75;
}
.spec-note.neutral { background: var(--paper); border-left-color: var(--steel); color: var(--text-light); }
.inline-link { color: var(--flame); font-weight: 600; border-bottom: 1px dashed var(--flame); }

/* ============================================================
   关于我们
   ============================================================ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.about-text h2 { font-size: 32px; font-weight: 800; color: var(--ink); margin-bottom: 22px; line-height: 1.34; }
.about-text p { color: var(--text-light); margin-bottom: 16px; font-size: 15.5px; line-height: 1.95; }
.about-media { position: relative; }
.about-media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); width: 100%; }
.about-media .badge {
  position: absolute; left: -22px; bottom: -22px; background: var(--flame); color: #fff;
  padding: 22px 28px; border-radius: var(--radius); box-shadow: var(--shadow-lg);
}
.about-media .badge b { display: block; font-size: 36px; font-weight: 800; line-height: 1; }
.about-media .badge span { font-size: 13px; opacity: .92; }

.info-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.info-table th {
  text-align: left; padding: 13px 16px; background: var(--ink); color: #fff;
  font-weight: 600; width: 160px; white-space: nowrap; border: 1px solid var(--ink);
}
.info-table td { padding: 13px 16px; border: 1px solid var(--line); color: var(--text); line-height: 1.7; }
.info-table tr:nth-child(even) td { background: #fafbfc; }

.medal-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.medal {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px; text-align: center; transition: all .25s;
}
.medal:hover { border-color: var(--flame); box-shadow: var(--shadow); transform: translateY(-4px); }
.medal .m-icon {
  width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%;
  background: var(--flame-soft); display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--flame);
}
.medal b { display: block; font-size: 15px; color: var(--ink); font-weight: 700; margin-bottom: 6px; line-height: 1.5; }
.medal span { font-size: 12.5px; color: var(--text-light); line-height: 1.55; display: block; }

/* 时间线 */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--flame) 0%, var(--line) 100%);
}
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -33px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--flame);
}
.tl-year { font-size: 19px; font-weight: 800; color: var(--flame); margin-bottom: 8px; letter-spacing: .5px; }
.tl-item h4 { font-size: 16.5px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.tl-item p { font-size: 14.5px; color: var(--text-light); line-height: 1.85; }

/* 优势列表 */
.edge-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.edge {
  display: flex; gap: 18px; padding: 26px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); transition: all .25s;
}
.edge:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.edge .e-num {
  flex: none; width: 46px; height: 46px; border-radius: 50%; background: var(--ink); color: var(--flame);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 17px;
}
.edge h4 { font-size: 17px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.edge p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 50px; align-items: start; }
.contact-list { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex; gap: 18px; padding: 26px 26px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); transition: all .25s;
}
.contact-item:hover { box-shadow: var(--shadow-lg); border-color: rgba(242,101,34,.35); transform: translateY(-3px); }
.contact-item .c-icon {
  flex: none; width: 52px; height: 52px; border-radius: var(--radius);
  background: var(--flame-soft); display: flex; align-items: center; justify-content: center;
}
.contact-item .c-icon svg { width: 24px; height: 24px; fill: var(--flame); }
.contact-item h4 { font-size: 15px; font-weight: 700; color: var(--ink); margin-bottom: 7px; }
.contact-item p { font-size: 14px; color: var(--text-light); line-height: 1.75; }
.contact-item .big { font-size: 22px; font-weight: 800; color: var(--flame); letter-spacing: .5px; display: block; margin-bottom: 4px; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 36px; box-shadow: var(--shadow); }
.form-card h3 { font-size: 23px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
.form-card > p { font-size: 14px; color: var(--text-light); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 9px; }
.form-group label .req { color: var(--flame); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 16px; border: 1px solid var(--line); border-radius: 4px;
  font-size: 14.5px; color: var(--text); background: #fafbfc; transition: all .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--flame); background: #fff; box-shadow: 0 0 0 3px rgba(242,101,34,.1);
}
.form-group textarea { resize: vertical; min-height: 118px; }
.form-agree { display: flex; align-items: flex-start; gap: 9px; font-size: 13px; color: var(--text-light); margin-bottom: 22px; }
.form-agree input { width: 16px; height: 16px; margin-top: 3px; flex: none; accent-color: var(--flame); }
.form-submit { width: 100%; justify-content: center; padding: 15px; font-size: 16px; }
.form-tip { font-size: 12.5px; color: var(--text-light); margin-top: 16px; text-align: center; line-height: 1.7; }
.form-success {
  display: none; text-align: center; padding: 40px 20px;
}
.form-success.show { display: block; }
.form-success .ok-icon {
  width: 68px; height: 68px; margin: 0 auto 20px; border-radius: 50%;
  background: #e8f8ee; display: flex; align-items: center; justify-content: center;
}
.form-success .ok-icon svg { width: 34px; height: 34px; fill: #34c759; }
.form-success h3 { font-size: 22px; color: var(--ink); margin-bottom: 10px; }
.form-success p { font-size: 14.5px; color: var(--text-light); line-height: 1.85; }

.map-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.map-card .map-ph {
  height: 300px; background: linear-gradient(135deg, #eef1f4 0%, #e3e7eb 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--text-light);
}
.map-card .map-ph svg { width: 42px; height: 42px; fill: #aab3bc; }
.map-card .map-ph p { font-size: 14px; }
.map-info { padding: 24px 26px; border-top: 1px solid var(--line); }
.map-info h4 { font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.map-info p { font-size: 14px; color: var(--text-light); line-height: 1.8; }

/* 联系页 AI 引导条 */
.ai-band {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  background: linear-gradient(100deg, #23272c 0%, #2e3339 100%);
  border-radius: var(--radius); padding: 32px 36px; color: #fff;
}
.ai-band .ai-icon {
  flex: none; width: 64px; height: 64px; border-radius: 50%; background: rgba(242,101,34,.18);
  display: flex; align-items: center; justify-content: center;
}
.ai-band .ai-icon svg { width: 32px; height: 32px; fill: var(--flame); }
.ai-band .ai-text { flex: 1; min-width: 240px; }
.ai-band h3 { font-size: 20px; font-weight: 700; margin-bottom: 7px; }
.ai-band p { font-size: 14px; color: #a7b0ba; line-height: 1.75; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .nav-item > a { padding: 12px 13px; font-size: 15px; }
  .prod-grid { grid-template-columns: repeat(3, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1.2fr; }
  .footer-grid .footer-col:first-child { grid-column: 1 / -1; }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .step:nth-child(3)::after { display: none; }
  .medal-grid { grid-template-columns: repeat(3, 1fr); }
  .prod-layout { grid-template-columns: 1fr; gap: 30px; }
  .prod-aside { position: static; }
  .aside-nav { display: grid; grid-template-columns: repeat(3, 1fr); border-radius: var(--radius); border-top: 1px solid var(--line); }
  .aside-nav a { border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
}
@media (max-width: 900px) {
  .header-phone { display: none; }
  .mobile-toggle { display: flex; }
  .nav {
    position: fixed; left: 0; right: 0; top: var(--header-h); background: #fff;
    flex-direction: column; align-items: stretch; padding: 12px 20px 24px;
    box-shadow: 0 14px 30px rgba(23,26,30,.14); display: none; max-height: calc(100vh - 78px); overflow-y: auto;
  }
  .nav.open { display: flex; }
  .nav-item > a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav-item > a::after { display: none; }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none;
    border-top: 0; border-left: 2px solid var(--line); padding: 0 0 8px 14px; min-width: 0; margin-left: 4px;
  }
  .dropdown a { padding: 8px 0; }
  .hero-slider { height: auto; min-height: 0; }
  .slide { position: relative; opacity: 1; display: none; padding: 72px 0 92px; }
  .slide.active { display: flex; }
  .slide h1 { font-size: 34px; }
  .slide p { font-size: 16px; }
  .slider-arrow { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 30px; }
  .stat:nth-child(3)::before { display: none; }
  .grid-2, .grid-3, .grid-4, .prod-grid, .industry-grid, .case-grid, .news-grid, .guarantee, .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid, .edge-list { grid-template-columns: 1fr; gap: 34px; }
  .about-media .badge { left: 16px; bottom: -18px; }
  .medal-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 28px; }
  .page-banner h1 { font-size: 30px; }
  .cta-band h2 { font-size: 24px; }
  .side-float { display: none; }
}
@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .topbar-left { gap: 12px; font-size: 12px; }
  .brand-name { font-size: 16px; }
  .brand-sub { font-size: 10px; letter-spacing: 1px; }
  .brand-mark { width: 42px; height: 42px; font-size: 18px; }
  .hero-slider .slide { padding: 56px 0 78px; }
  .slide h1 { font-size: 27px; }
  .slide p { font-size: 15px; }
  .grid-2, .grid-3, .grid-4, .prod-grid, .industry-grid, .case-grid, .news-grid,
  .guarantee, .tech-grid, .medal-grid, .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat b { font-size: 32px; }
  .stat p { font-size: 12.5px; }
  .stat + .stat::before { display: none; }
  .steps { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .aside-nav { grid-template-columns: repeat(2, 1fr); }
  .product-block { padding: 24px 20px 28px; }
  .product-block > h3 { font-size: 20px; }
  .form-card { padding: 28px 22px; }
  .cta-band .container { flex-direction: column; align-items: flex-start; }
  .chat-panel {
    right: 0; left: 0; bottom: 0; width: 100%; height: 88vh; max-height: 88vh;
    border-radius: 12px 12px 0 0;
  }
  .chat-launcher { right: 14px; bottom: 14px; padding: 11px 16px 11px 13px; }
  .chat-launcher b { font-size: 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; }
}