/* ==========================================================================
   陕西瑞泉水处理 - 宝鸡站  样式
   主题：工业蓝白 + 水流质感
   ========================================================================== */

/* 字体栈：思源黑体/阿里巴巴普惠体均为免费可商用 */
:root {
  --c-primary:   #0B5FAE;
  --c-primary-d: #08407A;
  --c-accent:    #00A6E0;
  --c-deep:      #0A2540;
  --c-cta:       #FF6B00;
  --c-cta-d:     #E55A00;
  --c-bg:        #F5F8FC;
  --c-bg-2:      #FFFFFF;
  --c-line:      #E3EAF2;
  --c-text:      #1A2B40;
  --c-muted:     #5B6B7E;
  --c-light:     #8A99AB;

  --shadow-sm: 0 1px 2px rgba(11,95,174,.06), 0 1px 1px rgba(11,95,174,.04);
  --shadow-md: 0 6px 18px rgba(11,95,174,.08), 0 2px 6px rgba(11,95,174,.05);
  --shadow-lg: 0 18px 40px rgba(11,95,174,.14), 0 4px 12px rgba(11,95,174,.06);

  --radius:  8px;
  --radius-sm: 4px;
  --radius-lg: 14px;

  --container: 1240px;

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Source Han Sans CN", "Noto Sans CJK SC", "Alibaba PuHuiTi",
               "Helvetica Neue", Arial, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; font-weight: 600; color: var(--c-deep); }
p { margin: 0 0 1em; }

/* 工具 */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.clearfix::after { content: ""; display: block; clear: both; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ==========================================================================
   顶部导航 + Banner 一体
   ========================================================================== */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease);
}
.topbar.is-scrolled {
  background: rgba(255,255,255,.96);
  border-bottom-color: var(--c-line);
  box-shadow: var(--shadow-sm);
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
  gap: 24px;
}

/* LOGO */
.logo {
  display: inline-flex; align-items: center; gap: 14px;
  font-weight: 700; color: var(--c-deep);
  letter-spacing: .02em;
  white-space: nowrap;
}
.logo__mark {
  width: 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 22px; font-weight: 800; box-shadow: var(--shadow-sm);
  position: relative; overflow: hidden;
}
.logo__mark::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255,255,255,.45) 0%, transparent 50%);
}
.logo__text {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 20px;
  line-height: 1;
}
.logo__divider {
  display: inline-block; width: 1px; height: 22px;
  background: linear-gradient(to bottom, transparent, var(--c-light), transparent);
  margin: 0 2px;
}
.logo__sub {
  color: var(--c-primary);
  font-weight: 600;
  font-size: 20px;
  line-height: 1;
}

/* 导航 */
.nav { display: flex; align-items: center; gap: 4px; }
.nav__item {
  position: relative; padding: 10px 16px;
  font-size: 15px; font-weight: 500; color: var(--c-text);
  border-radius: 6px;
  transition: color .2s var(--ease), background .2s var(--ease);
}
.nav__item:hover, .nav__item.is-active { color: var(--c-primary); }
.nav__item.is-active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px;
  transform: translateX(-50%); width: 22px; height: 2px;
  background: var(--c-primary); border-radius: 2px;
}
.nav__cta {
  margin-left: 12px;
  padding: 10px 18px;
  background: var(--c-cta); color: #fff !important;
  border-radius: 6px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .2s var(--ease), transform .2s var(--ease);
}
.nav__cta:hover { background: var(--c-cta-d); transform: translateY(-1px); }

/* 移动端菜单按钮 */
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 6px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--c-deep);
  margin: 4px auto; transition: transform .25s var(--ease), opacity .2s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   HERO Banner 一体
   ========================================================================== */
.hero {
  position: relative;
  min-height: 640px;
  margin-top: 0;
  padding: 168px 0 96px;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(0,166,224,.45), transparent 60%),
    radial-gradient(900px 500px at -10% 60%, rgba(11,95,174,.5), transparent 60%),
    linear-gradient(135deg, #062E5C 0%, #08407A 50%, #0B5FAE 100%);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  z-index: -1;
}
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 999px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  font-size: 13px; color: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
}
.hero__eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); box-shadow: 0 0 0 4px rgba(0,166,224,.2); }
.hero__title {
  margin-top: 18px; color: #fff;
  font-size: clamp(28px, 4.6vw, 54px); font-weight: 800; line-height: 1.15;
  letter-spacing: -0.01em;
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(90deg, #FFFFFF 0%, #8EC9F0 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__sub {
  margin-top: 18px;
  font-size: clamp(15px, 1.3vw, 18px);
  color: rgba(255,255,255,.85);
  max-width: 620px;
  line-height: 1.7;
}
.hero__meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; }
.hero__meta-item {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; color: rgba(255,255,255,.85);
}
.hero__meta-item svg { color: var(--c-accent); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 6px;
  font-size: 15px; font-weight: 600;
  transition: transform .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.btn--primary { background: var(--c-cta); color: #fff; }
.btn--primary:hover { background: var(--c-cta-d); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255,107,0,.32); }
.btn--ghost { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.28); backdrop-filter: blur(8px); }
.btn--ghost:hover { background: rgba(255,255,255,.18); }
.btn--line { background: #fff; color: var(--c-primary); border: 1px solid var(--c-primary); }
.btn--line:hover { background: var(--c-primary); color: #fff; }
.btn--solid { background: var(--c-primary); color: #fff; }
.btn--solid:hover { background: var(--c-primary-d); }

.hero__visual { position: relative; height: 100%; min-height: 420px; }
.hero__visual::before {
  content: ""; position: absolute; inset: -20px;
  background: radial-gradient(circle at center, rgba(0,166,224,.25), transparent 70%);
  filter: blur(40px); z-index: 0;
}
.hero__device {
  position: relative; z-index: 1;
  border-radius: 18px; overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(6px);
}
.hero__device img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.hero__chips {
  position: absolute; z-index: 2;
  display: grid; gap: 12px;
}
.hero__chip {
  background: rgba(255,255,255,.96); color: var(--c-deep);
  padding: 12px 16px; border-radius: 10px;
  box-shadow: var(--shadow-md);
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 600;
  animation: float 6s ease-in-out infinite;
}
.hero__chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); }
.hero__chip--1 { top: 8%; left: -16px; animation-delay: 0s; }
.hero__chip--2 { bottom: 18%; right: -10px; animation-delay: 1.2s; }
.hero__chip--3 { top: 56%; left: -32px; animation-delay: 2.4s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

.hero__wave {
  position: absolute; left: 0; right: 0; bottom: -1px; z-index: 2;
  height: 80px;
}
.hero__wave svg { width: 100%; height: 100%; display: block; }

/* ==========================================================================
   通用板块
   ========================================================================== */
section { padding: 88px 0; }
.section--alt { background: #fff; }
.section--dark { background: var(--c-deep); color: #fff; }
.section--dark h2, .section--dark h3 { color: #fff; }

.section__head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section__eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600;
  color: var(--c-primary);
  text-transform: none;
  letter-spacing: .12em;
  margin-bottom: 14px;
  position: relative; padding: 0 24px;
}
.section__eyebrow::before, .section__eyebrow::after {
  content: ""; position: absolute; top: 50%; width: 18px; height: 1px;
  background: var(--c-primary);
}
.section__eyebrow::before { left: 0; }
.section__eyebrow::after  { right: 0; }
.section__title {
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.section__title em { color: var(--c-primary); font-style: normal; }
.section__desc { color: var(--c-muted); margin-top: 14px; font-size: 15px; }

/* ==========================================================================
   数据条
   ========================================================================== */
.stats { padding: 56px 0; background: linear-gradient(135deg, #062E5C 0%, #0B5FAE 100%); color: #fff; }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; padding: 12px 8px; }
.stat__num {
  font-size: clamp(32px, 4vw, 48px); font-weight: 800; color: #fff;
  display: inline-flex; align-items: baseline; gap: 4px;
}
.stat__num small { font-size: 0.5em; color: rgba(255,255,255,.7); }
.stat__label { color: rgba(255,255,255,.78); font-size: 14px; margin-top: 8px; }

/* ==========================================================================
   主营产品分类
   ========================================================================== */
.cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cat {
  position: relative; overflow: hidden;
  background: #fff; border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--c-line);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
  display: flex; flex-direction: column;
}
.cat:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11,95,174,.3);
}
.cat__icon {
  width: 56px; height: 56px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(11,95,174,.1), rgba(0,166,224,.12));
  color: var(--c-primary);
  margin-bottom: 18px;
}
.cat__title { font-size: 20px; font-weight: 700; color: var(--c-deep); margin-bottom: 8px; }
.cat__desc  { color: var(--c-muted); font-size: 14px; margin-bottom: 16px; min-height: 44px; }
.cat__more  {
  margin-top: auto;
  color: var(--c-primary); font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.cat__more::after { content: "→"; transition: transform .25s var(--ease); }
.cat:hover .cat__more::after { transform: translateX(4px); }
.cat__count {
  position: absolute; right: 16px; top: 16px;
  background: var(--c-bg); color: var(--c-muted);
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
}

/* ==========================================================================
   产品卡片
   ========================================================================== */
.products__head { display: flex; align-items: end; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 36px; }
.tabs {
  display: inline-flex; flex-wrap: wrap; gap: 6px;
  background: #fff; border: 1px solid var(--c-line);
  border-radius: 999px; padding: 4px;
}
.tabs__btn {
  padding: 8px 16px; border-radius: 999px;
  font-size: 14px; color: var(--c-muted);
  transition: background .2s var(--ease), color .2s var(--ease);
}
.tabs__btn.is-active { background: var(--c-primary); color: #fff; }

.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product {
  background: #fff; border-radius: var(--radius);
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  display: flex; flex-direction: column;
}
.product:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(11,95,174,.25);
}
.product__img {
  position: relative; aspect-ratio: 4/3; overflow: hidden;
  background: #f0f4f9; cursor: zoom-in;
}
.product__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.product:hover .product__img img { transform: scale(1.06); }
.product__cat {
  position: absolute; left: 12px; top: 12px;
  background: rgba(11,95,174,.92); color: #fff;
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  backdrop-filter: blur(6px);
}
.product__zoom {
  position: absolute; right: 12px; bottom: 12px;
  background: rgba(255,255,255,.92); color: var(--c-deep);
  font-size: 12px; padding: 6px 10px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 4px;
  opacity: 0; transition: opacity .3s var(--ease);
}
.product:hover .product__zoom { opacity: 1; }
.product__body { padding: 16px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.product__name {
  font-size: 15px; font-weight: 600; color: var(--c-deep);
  line-height: 1.4; min-height: 42px; margin-bottom: 6px;
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product__desc {
  color: var(--c-muted); font-size: 13px; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  flex: 1;
}
.product__foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--c-line);
  font-size: 13px;
}
.product__foot a { color: var(--c-primary); font-weight: 600; }

/* ==========================================================================
   图片放大弹层
   ========================================================================== */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(8, 24, 48, .88);
  display: none; align-items: center; justify-content: center;
  padding: 32px; opacity: 0; transition: opacity .25s var(--ease);
}
.lightbox.is-open { display: flex; opacity: 1; }
.lightbox__img {
  max-width: 92vw; max-height: 88vh; border-radius: 10px;
  background: #fff; padding: 8px;
  box-shadow: 0 30px 80px rgba(0,0,0,.5);
  animation: zoomIn .35s var(--ease);
}
@keyframes zoomIn { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.lightbox__cap {
  position: absolute; left: 50%; bottom: 32px; transform: translateX(-50%);
  color: #fff; background: rgba(0,0,0,.6); padding: 8px 16px;
  border-radius: 999px; font-size: 14px; max-width: 80vw;
}
.lightbox__close {
  position: absolute; top: 24px; right: 24px;
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,.16); color: #fff; backdrop-filter: blur(8px);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .2s var(--ease);
}
.lightbox__close:hover { background: rgba(255,255,255,.3); }

/* ==========================================================================
   宝鸡本地服务
   ========================================================================== */
.local { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.local__media {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #0B5FAE, #00A6E0);
}
.local__media::before {
  content: ""; position: absolute; inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><defs><pattern id='p' width='6' height='6' patternUnits='userSpaceOnUse'><circle cx='3' cy='3' r='0.7' fill='%23ffffff' fill-opacity='0.18'/></pattern></defs><rect width='100' height='100' fill='url(%23p)'/></svg>");
}
.local__media-overlay {
  position: absolute; left: 24px; bottom: 24px; right: 24px;
  background: rgba(255,255,255,.95); padding: 18px 20px; border-radius: 10px;
  box-shadow: var(--shadow-md);
}
.local__media-overlay h4 { font-size: 16px; margin-bottom: 4px; }
.local__media-overlay p { color: var(--c-muted); font-size: 13px; margin: 0; }
.local__list { display: grid; gap: 16px; }
.local__item {
  display: flex; gap: 14px; align-items: flex-start;
  padding: 16px 18px; border-radius: 10px;
  background: #fff; border: 1px solid var(--c-line);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.local__item:hover { transform: translateX(4px); box-shadow: var(--shadow-sm); }
.local__item-ico {
  width: 40px; height: 40px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(11,95,174,.1), rgba(0,166,224,.12));
  color: var(--c-primary);
  display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.local__item h4 { font-size: 15px; margin-bottom: 4px; }
.local__item p { color: var(--c-muted); font-size: 13px; margin: 0; }

.local__title { font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 14px; }
.local__title em { color: var(--c-primary); font-style: normal; }
.local__lead  { color: var(--c-muted); font-size: 15px; margin-bottom: 24px; }
.local__areas {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; padding-top: 24px;
  border-top: 1px dashed var(--c-line);
}
.local__areas span {
  font-size: 13px; color: var(--c-muted);
  padding: 4px 12px; border-radius: 999px;
  background: var(--c-bg); border: 1px solid var(--c-line);
}

/* ==========================================================================
   应用行业
   ========================================================================== */
.industries { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.industry {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 22px 20px; text-align: center;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.industry:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-md);
  border-color: rgba(11,95,174,.3);
}
.industry__ico {
  width: 56px; height: 56px; margin: 0 auto 12px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff;
  box-shadow: 0 6px 16px rgba(11,95,174,.25);
}
.industry h4 { font-size: 15px; margin-bottom: 4px; }
.industry p  { color: var(--c-muted); font-size: 12px; margin: 0; }

/* ==========================================================================
   服务流程时间线
   ========================================================================== */
.process { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; position: relative; }
.process::before {
  content: ""; position: absolute; top: 30px; left: 8%; right: 8%;
  height: 2px; background: linear-gradient(to right, var(--c-line), var(--c-primary), var(--c-line));
  z-index: 0;
}
.step { position: relative; text-align: center; z-index: 1; }
.step__num {
  width: 60px; height: 60px; border-radius: 50%;
  margin: 0 auto 16px;
  background: #fff; color: var(--c-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 700;
  border: 2px solid var(--c-primary);
  box-shadow: 0 0 0 6px #fff;
  transition: transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
}
.step:hover .step__num { background: var(--c-primary); color: #fff; transform: scale(1.06); }
.step h4 { font-size: 15px; margin-bottom: 4px; }
.step p  { color: var(--c-muted); font-size: 12px; margin: 0; }

/* ==========================================================================
   关于我们
   ========================================================================== */
.about { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about__lead { color: var(--c-muted); font-size: 15px; line-height: 1.9; }
.about__list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.about__item {
  padding: 18px 18px; border-left: 3px solid var(--c-primary);
  background: var(--c-bg); border-radius: 0 8px 8px 0;
}
.about__item h5 { font-size: 15px; margin-bottom: 4px; }
.about__item p { color: var(--c-muted); font-size: 13px; margin: 0; }
.about__media {
  position: relative; aspect-ratio: 4/3; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about__media img { width: 100%; height: 100%; object-fit: cover; }
.about__badge {
  position: absolute; left: 24px; top: 24px;
  background: rgba(255,255,255,.95); padding: 14px 18px; border-radius: 12px;
  box-shadow: var(--shadow-md);
}
.about__badge h3 { font-size: 28px; color: var(--c-primary); margin-bottom: 2px; }
.about__badge p  { font-size: 12px; color: var(--c-muted); margin: 0; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { max-width: 920px; margin: 0 auto; display: grid; gap: 12px; }
.faq details {
  background: #fff; border-radius: var(--radius);
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.faq details[open] { border-color: rgba(11,95,174,.4); box-shadow: var(--shadow-sm); }
.faq summary {
  list-style: none; cursor: pointer;
  padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  font-size: 15px; font-weight: 600; color: var(--c-deep);
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "Q";
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff; font-size: 13px; font-weight: 800; flex-shrink: 0;
}
.faq summary::after {
  content: "+"; color: var(--c-primary); font-size: 22px; font-weight: 400;
  transition: transform .25s var(--ease);
}
.faq details[open] summary::after { content: "−"; }
.faq__body { padding: 0 24px 22px 70px; color: var(--c-muted); font-size: 14px; line-height: 1.85; }

/* ==========================================================================
   联系方式
   ========================================================================== */
.contact { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 32px; }
.contact__card {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.contact__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact__ico {
  width: 48px; height: 48px; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  color: #fff; display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.contact__label { color: var(--c-muted); font-size: 13px; margin-bottom: 6px; }
.contact__val { color: var(--c-deep); font-size: 16px; font-weight: 600; line-height: 1.5; }
.contact__val a { color: inherit; }
.contact__val a:hover { color: var(--c-primary); }

.contact__qr {
  background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 24px;
  display: flex; align-items: center; gap: 24px;
  max-width: 520px; margin: 0 auto;
}
.contact__qr img { width: 140px; height: 140px; border-radius: 8px; }
.contact__qr h4 { font-size: 18px; margin-bottom: 6px; }
.contact__qr p  { color: var(--c-muted); font-size: 14px; margin: 0; }

/* ==========================================================================
   友情链接 / 城市
   ========================================================================== */
.links__row { display: flex; flex-wrap: wrap; gap: 10px; }
.links__row a {
  font-size: 13px; color: var(--c-muted);
  padding: 6px 12px; border-radius: 6px;
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1);
  transition: color .2s var(--ease), background .2s var(--ease);
}
.section--alt .links__row a { background: #fff; border-color: var(--c-line); }
.links__row a:hover { color: var(--c-primary); background: rgba(11,95,174,.06); border-color: rgba(11,95,174,.3); }

/* ==========================================================================
   底部
   ========================================================================== */
.footer { background: var(--c-deep); color: rgba(255,255,255,.7); padding: 56px 0 24px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer h5 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer__about p { font-size: 13px; line-height: 1.85; color: rgba(255,255,255,.65); }
.footer__list { display: grid; gap: 10px; }
.footer__list a { font-size: 13px; color: rgba(255,255,255,.6); transition: color .2s var(--ease); }
.footer__list a:hover { color: #fff; }
.footer__contact p { font-size: 13px; color: rgba(255,255,255,.6); margin: 0 0 8px; line-height: 1.7; }
.footer__contact p strong { color: #fff; }
.footer__bottom {
  margin-top: 40px; padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center; font-size: 12px; color: rgba(255,255,255,.45);
  line-height: 1.9;
}
.footer__bottom a { color: rgba(255,255,255,.65); }
.footer__bottom a:hover { color: #fff; }

/* ==========================================================================
   浮动微信
   ========================================================================== */
.floats {
  position: fixed; right: 20px; bottom: 80px; z-index: 90;
  display: flex; flex-direction: column; gap: 10px;
}
.floats__item {
  width: 54px; height: 54px; border-radius: 50%;
  background: #fff; box-shadow: var(--shadow-md);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--c-primary);
  position: relative;
  transition: transform .25s var(--ease);
}
.floats__item:hover { transform: scale(1.08); }
.floats__item--cta { background: var(--c-cta); color: #fff; }
.floats__tip {
  position: absolute; right: 64px; top: 50%; transform: translateY(-50%);
  background: var(--c-deep); color: #fff; padding: 6px 10px; border-radius: 6px;
  font-size: 12px; white-space: nowrap;
  opacity: 0; pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}
.floats__tip img { width: 110px; height: 110px; border-radius: 6px; margin-bottom: 4px; }
.floats__item:hover .floats__tip { opacity: 1; transform: translateY(-50%) translateX(-4px); }

/* ==========================================================================
   回到顶部
   ========================================================================== */
.to-top {
  position: fixed; right: 20px; bottom: 20px; z-index: 80;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none;
  transition: opacity .25s var(--ease), transform .25s var(--ease), background .2s var(--ease);
}
.to-top.is-show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--c-primary-d); transform: translateY(-2px); }

/* ==========================================================================
   产品中心
   ========================================================================== */
.page-hero {
  padding: 168px 0 80px;
  background:
    radial-gradient(900px 400px at 80% 20%, rgba(0,166,224,.3), transparent 60%),
    linear-gradient(135deg, #062E5C 0%, #0B5FAE 100%);
  color: #fff;
}
.page-hero__title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; color: #fff; }
.page-hero__sub   { color: rgba(255,255,255,.8); margin-top: 12px; max-width: 720px; }
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.65); margin-bottom: 18px; }
.crumbs a:hover { color: #fff; }
.crumbs span { opacity: .5; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1100px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { min-height: 360px; }
  .local, .about { grid-template-columns: 1fr; gap: 40px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 880px) {
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column;
         background: #fff; border-top: 1px solid var(--c-line); padding: 12px 16px; box-shadow: var(--shadow-md); }
  .nav.is-open { display: flex; }
  .nav__item { width: 100%; padding: 14px 12px; }
  .nav__cta  { width: 100%; justify-content: center; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .products { grid-template-columns: repeat(2, 1fr); }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .cats { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 28px; }
  .process::before { display: none; }
  .contact { grid-template-columns: 1fr 1fr; }
  .contact__qr { flex-direction: column; text-align: center; }
  .about__list { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .floats { right: 12px; bottom: 64px; }
  .floats__item { width: 46px; height: 46px; }
  .to-top { right: 12px; bottom: 12px; }
}
@media (max-width: 480px) {
  .products, .industries, .contact { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .logo__text { font-size: 16px; }
  .logo__sub  { font-size: 16px; }
  .hero { padding: 140px 0 64px; min-height: 520px; }
  .hero__chip { font-size: 12px; padding: 8px 12px; }
  .hero__chip--1, .hero__chip--3 { left: 0; }
  .hero__chip--2 { right: 0; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .process { grid-template-columns: 1fr 1fr; }
  .contact__qr img { width: 110px; height: 110px; }
}

/* ==========================================================================
   动效
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: translateY(0); }
.reveal--left { transform: translateX(-32px); }
.reveal--left.is-in { transform: translateX(0); }
.reveal--right { transform: translateX(32px); }
.reveal--right.is-in { transform: translateX(0); }