/* ============================================================
   深圳市科之泉水处理科技有限公司 — 官网样式系统
   工程手册风：纸色底 / 近黑字 / 细线分隔 / 直角 / 等宽数字
   原则：不用渐变、不用阴影堆叠、不用圆角卡片，靠线、编号、留白说话
   ============================================================ */

:root{
  --ink:#12161A;
  --ink-2:#3D4854;
  --brand:#0B2E4F;
  --brand-deep:#0B2E4F;
  --brand-soft:#EEF1F4;
  --accent:#B4470E;
  --accent-deep:#8F380B;
  --accent-soft:#FBF1EA;
  --bg:#FAFAF7;
  --bg-soft:#F4F4EF;
  --line:#DCDFE2;
  --line-strong:#C6CBD0;
  --muted:#6B7684;
  --radius:2px;
  --radius-sm:2px;
  --shadow-sm:none;
  --shadow-md:none;
  --wrap:1240px;
  --mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
[id]{scroll-margin-top:96px}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ink);
  background:var(--bg);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:-.012em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 40px}
.sec{padding:84px 0}
.sec--soft{background:var(--bg-soft)}
.sec--dark{background:var(--brand);color:#fff}
.sec--tight{padding:60px 0}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand);color:rgba(255,255,255,.76);font-size:12.5px;line-height:1}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;gap:16px}
.topbar a{transition:color .2s}
.topbar a:hover{color:#fff}
.topbar b{color:#fff;font-weight:600}
.topbar-left{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.topbar-right{display:flex;gap:20px;align-items:center;font-family:var(--mono);font-size:12px;letter-spacing:.03em}
.topbar .dot{width:3px;height:3px;background:rgba(255,255,255,.32);flex-shrink:0}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;border:1.5px solid var(--brand);
  display:grid;place-items:center;background:transparent;
}
.brand-mark svg{width:20px;height:20px}
.brand-mark .mk{font-family:var(--mono);font-size:11px;font-weight:700;color:var(--brand);letter-spacing:-.02em}
.brand-text strong{display:block;font-size:16px;letter-spacing:.01em;line-height:1.25;font-weight:700}
.brand-text span{display:block;font-size:9.5px;color:var(--muted);letter-spacing:.16em;text-transform:uppercase;font-family:var(--mono)}

.nav-links{display:flex;align-items:center;gap:28px}
.nav-links > li > a{
  display:block;padding:6px 0;border-bottom:2px solid transparent;
  font-size:14.5px;font-weight:500;color:var(--ink-2);
  transition:.18s var(--ease);white-space:nowrap;
}
.nav-links > li > a:hover{color:var(--brand);border-bottom-color:var(--brand)}
.nav-links > li > a.active{color:var(--brand);font-weight:600;border-bottom-color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:10px;margin-left:12px;padding-left:22px;border-left:1px solid var(--line)}

/* 汉堡 */
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:0;
  background:transparent;cursor:pointer;padding:0;place-items:center;
}
.burger span{display:block;width:17px;height:1.5px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:17px;height:1.5px;background:var(--ink);
}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:2px;border:1px solid var(--brand);
  font-size:14.5px;font-weight:600;cursor:pointer;font-family:inherit;
  transition:.18s var(--ease);white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#fff}
.btn--primary:hover{background:#08243D}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn--ghost:hover{background:rgba(11,46,79,.05)}
.btn--light{background:transparent;color:var(--brand);border-color:var(--line-strong)}
.btn--light:hover{border-color:var(--brand)}
.btn--block{width:100%}
.btn--sm{padding:9px 18px;font-size:13.5px}
.sec--dark .btn--light{color:#fff;border-color:rgba(255,255,255,.4)}
.sec--dark .btn--light:hover{background:rgba(255,255,255,.1)}
.sec--dark .btn--primary{background:#fff;color:var(--brand);border-color:#fff}

/* ---------- 标题组 ---------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);margin-bottom:20px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent)}
.sec--dark .eyebrow{color:#E8A176}
.sec--dark .eyebrow::before{background:#E8A176}

.sec-head{max-width:820px;margin-bottom:46px}
.sec-head h2{font-size:clamp(25px,2.9vw,36px);margin-bottom:16px}
.sec-head p{color:var(--muted);font-size:15.5px;line-height:1.9}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head--center .eyebrow{justify-content:center}
.sec--dark .sec-head p{color:rgba(255,255,255,.72)}

/* ---------- 首页 Hero ---------- */
.hero{
  position:relative;
  background:var(--bg);
  color:var(--ink);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero .wrap{position:relative;padding:72px 40px 0}
.hero-inner{max-width:640px;position:relative;z-index:2}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:0 0 0 0;border-radius:0;background:transparent;border:0;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--muted);
  margin-bottom:26px;
}
.hero-badge i{width:5px;height:5px;background:var(--accent)}
.hero h1{
  font-size:clamp(31px,4vw,50px);
  line-height:1.28;letter-spacing:-.018em;margin-bottom:22px;
}
.hero h1 em{font-style:normal;box-shadow:inset 0 -0.4em 0 rgba(180,71,14,.12)}
.hero-lead{font-size:15.5px;line-height:1.95;color:var(--ink-2);margin-bottom:32px}
.hero-lead strong{color:var(--ink)!important;font-weight:600}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:0}
.hero-inner{padding-bottom:54px}

.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid var(--line);
  margin:0 -40px;padding:0;
  background:var(--bg-soft);
}
.hero-stats div{padding:22px 24px 20px;border-right:1px solid var(--line)}
.hero-stats div:last-child{border-right:0}
.hero-stats b{display:block;font-family:var(--mono);font-size:21px;line-height:1.2;font-weight:600;letter-spacing:-.01em;color:var(--ink)}
.hero-stats b small{font-size:12px;font-weight:400;margin-left:3px;color:var(--muted)}
.hero-stats > div > span{display:block;margin-top:6px;font-size:12.5px;color:var(--muted)}
.hero-stats b > span{display:inline}

/* 首屏右侧实拍图 */
.hero-fig{position:absolute;right:40px;top:76px;width:min(46%,470px);margin:0}
.hero-fig img{width:100%;height:398px;object-fit:cover;border:1px solid var(--line);filter:saturate(.92)}
.hero-fig figcaption{
  margin-top:10px;display:flex;justify-content:space-between;align-items:center;
  font-size:11.5px;color:var(--muted);font-family:var(--mono);letter-spacing:.05em;
}
@media (max-width:1080px){.hero-fig{display:none}}

/* ---------- 内页小头图 ---------- */
.page-hero{
  position:relative;
  color:var(--ink);
  background:var(--bg-soft);
  border-bottom:1px solid var(--line);
}
.page-hero .wrap{position:relative;padding:52px 40px 44px}
.page-hero h1{font-size:clamp(26px,3.2vw,38px);margin-bottom:14px;letter-spacing:-.015em}
.page-hero p{color:var(--ink-2);max-width:680px;font-size:15.5px;line-height:1.9}
.page-hero .eyebrow{margin-bottom:16px}
.crumb{display:flex;gap:8px;align-items:center;font-size:12.5px;color:var(--muted);margin-bottom:22px;font-family:var(--mono);letter-spacing:.04em}
.crumb a:hover{color:var(--ink)}
.crumb span{opacity:.45}

/* ---------- 通用卡片（细线栅格，非卡片） ---------- */
.grid{display:grid;gap:1px;background:var(--line)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid > *{background:var(--bg)}

.card{
  background:var(--bg);border:0;border-radius:0;
  padding:30px 28px;transition:none;position:relative;
}
.card:hover{background:var(--bg-soft)}
.card h3{font-size:17.5px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.85}
.card-num{
  font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.14em;
  color:var(--accent);margin-bottom:14px;display:block;
}

/* 顺序排列的细线列表（用于替代卡片网格） */
.rows{display:grid;gap:0;border-top:1px solid var(--line-strong)}
.rows > *{border-bottom:1px solid var(--line)}

/* ---------- 资质证书墙 ---------- */
.cert-block{margin-top:56px;padding-top:40px;border-top:1px solid var(--line)}
.cert-head{margin-bottom:26px}
.cert-head h3{font-size:19px;margin-bottom:10px}
.cert-head p{color:var(--muted);font-size:14px;line-height:1.85;max-width:760px}
.cert{padding:0 0 20px;display:flex;flex-direction:column;background:var(--bg)}
.cert:hover{background:var(--bg)}
.cert-shot{
  position:relative;border-radius:0;overflow:hidden;
  background:#FBF7EE;border:1px solid #E0D9C8;
}
.cert-shot svg{display:block;width:100%;height:auto}
.cert-tag{
  position:absolute;top:0;right:0;z-index:2;
  font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.04em;
  padding:4px 8px;border-radius:0;
  color:#7A5F16;background:#F6EFDC;border-left:1px solid #E0D3AE;border-bottom:1px solid #E0D3AE;
}
.cert h3{font-size:15px;line-height:1.55;margin:14px 0 6px;font-weight:600}
.cert-meta{font-size:12.5px;color:var(--muted);line-height:1.7;margin:0}
.cert-note{
  margin-top:24px;font-size:12.5px;color:var(--muted);
  padding-top:14px;border-top:1px solid var(--line);
}

/* ---------- 设备实拍 ---------- */
.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.shot{margin:0;position:relative;border-radius:0;overflow:hidden;border:1px solid var(--line);background:var(--bg-soft)}
.shot img{display:block;width:100%;height:auto;aspect-ratio:3/4;object-fit:cover;transition:transform .6s var(--ease);filter:saturate(.94)}
.shot:hover img{transform:scale(1.03)}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:24px 11px 10px;
  font-size:11.5px;line-height:1.5;color:#fff;letter-spacing:.01em;
  background:linear-gradient(transparent,rgba(6,20,32,.86));
}
.shots--five{grid-template-columns:repeat(5,1fr)}
@media (max-width:980px){.shots{grid-template-columns:repeat(3,1fr);gap:12px}.shots--five{grid-template-columns:repeat(3,1fr)}}
@media (max-width:760px){.shots{grid-template-columns:repeat(2,1fr);gap:12px}
  .shot{background:var(--bg)}
  .shot figcaption{position:static;background:none;color:var(--muted);
    padding:8px 9px 10px;font-size:12px;line-height:1.45}}

.ico{
  width:40px;height:40px;border-radius:0;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line-strong);color:var(--brand);margin-bottom:18px;
}
.ico svg{width:20px;height:20px}
.ico--accent{border-color:#E0C3AF;color:var(--accent)}

/* 带图区块 */
.tile{
  background:var(--bg);border:0;border-radius:0;
  overflow:hidden;transition:none;display:flex;flex-direction:column;
}
.tile:hover{background:var(--bg-soft)}
.tile-media{
  aspect-ratio:16/10;position:relative;overflow:hidden;
  background:#E7EAEC;
  display:grid;place-items:center;
}
.tile-media::after{content:none}
.tile-media svg{width:52%;max-width:150px;height:auto;position:relative;z-index:1;opacity:.9}
.tile-media .tile-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;filter:saturate(.92)}
.cert-shot img{display:block;width:100%;height:auto;aspect-ratio:320/226;object-fit:contain;background:#FBF7EE}
.tile-media .tag{
  position:absolute;top:0;left:0;z-index:2;
  font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.08em;
  padding:5px 10px;border-radius:0;
  background:var(--brand);color:#fff;
}
.tile-body{padding:22px 24px 24px;flex:1;display:flex;flex-direction:column}
.tile-body h3{font-size:17px;margin-bottom:9px}
.tile-body p{color:var(--muted);font-size:14px;line-height:1.85;flex:1}
.tile-more{
  margin-top:18px;font-size:13.5px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:6px;
}
.tile-more::after{content:"→";transition:transform .2s var(--ease)}
.tile:hover .tile-more::after{transform:translateX(3px)}

/* ---------- 数据条 ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:0;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);
  border-radius:0;overflow:hidden;background:transparent;
}
.stats-band > div{padding:26px 24px;border-right:1px solid var(--line)}
.stats-band > div:last-child{border-right:0}
.stats-band b{display:block;font-family:var(--mono);font-size:26px;line-height:1.15;color:var(--ink);letter-spacing:-.01em;font-weight:600}
.stats-band b small{font-size:13px;margin-left:3px;color:var(--muted);font-weight:400}
.stats-band span{display:block;margin-top:7px;font-size:12.5px;color:var(--muted)}

/* ---------- 工艺流程 ---------- */
.flow{display:grid;gap:0;background:transparent}
.flow--h{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.flow-step{border-top:1px solid var(--line)}
.flow-step:first-child{border-top:1px solid var(--line-strong)}
.flow-step{
  background:var(--bg);border-radius:0;
  padding:20px 20px 20px 0;position:relative;transition:background .2s;
}
.flow--h .flow-step{padding:18px 18px}
.flow-step:hover{background:var(--bg-soft)}
.flow-step b{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--accent);margin-bottom:8px;font-weight:500}
.flow-step span{font-size:15px;font-weight:600;display:block;line-height:1.5}
.flow-step i{display:block;font-style:normal;font-size:12.8px;color:var(--muted);margin-top:6px;line-height:1.7}
.sec--dark .flow-step{background:rgba(255,255,255,.04)}
.sec--dark .flow-step b{color:#E8A176}
.sec--dark .flow-step i{color:rgba(255,255,255,.62)}

/* ---------- 列表（打勾） ---------- */
.checks{display:grid;gap:13px}
.checks li{position:relative;padding-left:28px;font-size:14.8px;color:var(--ink-2);line-height:1.75}
.checks li::before{
  content:"";position:absolute;left:0;top:8px;width:11px;height:6px;
  border-left:1.5px solid var(--accent);border-bottom:1.5px solid var(--accent);
  transform:rotate(-45deg);
}
.sec--dark .checks li{color:rgba(255,255,255,.82)}
.sec--dark .checks li::before{border-color:#E8A176}

/* ---------- 两栏图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split--wide{grid-template-columns:1.05fr .95fr}
.split-media{
  border-radius:0;overflow:hidden;position:relative;
  aspect-ratio:4/3;
  background:#E7EAEC;
  display:grid;place-items:center;
}
.split-media svg{width:64%;height:auto;opacity:.9}
.split-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.94)}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:0;border-top:1.5px solid var(--ink);border-radius:0;background:transparent}
table.spec{width:100%;border-collapse:collapse;font-size:14px;min-width:560px}
table.spec th,table.spec td{padding:15px 16px;text-align:left;border-bottom:1px solid var(--line)}
table.spec th{
  background:transparent;font-weight:500;color:var(--muted);font-size:10.5px;
  letter-spacing:.13em;text-transform:uppercase;font-family:var(--mono);
  border-bottom:1px solid var(--line);
}
table.spec tr:last-child td{border-bottom:0}
table.spec td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
table.spec tbody tr:hover{background:var(--bg-soft)}

/* ---------- 手风琴 ---------- */
.acc{border:0;border-top:1px solid var(--line-strong);border-radius:0;overflow:hidden;background:transparent}
.acc details{border-bottom:1px solid var(--line)}
.acc details:last-child{border-bottom:0}
.acc summary{
  padding:19px 0;font-weight:600;font-size:15px;cursor:pointer;
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;
  transition:color .2s;
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{color:var(--brand)}
.acc summary::after{
  content:"+";font-family:var(--mono);font-size:17px;font-weight:400;color:var(--accent);
  flex-shrink:0;line-height:1;transition:transform .22s var(--ease);
}
.acc details[open] summary::after{transform:rotate(45deg)}
.acc .acc-body{padding:0 0 20px;color:var(--muted);font-size:14.5px;line-height:1.9}

/* ---------- 联系 / 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.info-list{display:grid;gap:0;border-top:1px solid var(--line-strong)}
.info-list > div{
  display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);
}
.info-list > div:first-child{padding-top:18px}
.info-list .ico{width:32px;height:32px;border:0;margin:0;flex-shrink:0;color:var(--accent);background:transparent}
.info-list .ico svg{width:18px;height:18px}
.info-list b{display:block;font-size:11.5px;color:var(--muted);font-weight:500;margin-bottom:2px;font-family:var(--mono);letter-spacing:.06em}
.info-list span{font-size:15px;font-weight:600;line-height:1.65;word-break:break-all}

.form{background:var(--bg);border:1px solid var(--line);border-radius:0;padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px;letter-spacing:.02em}
.field label i{color:#C0392B;font-style:normal;margin-left:2px}
.field label .opt{font-weight:400;font-size:11px;color:var(--muted);margin-left:6px;letter-spacing:0}
.hp-field{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line-strong);border-radius:2px;
  font-family:inherit;font-size:14px;color:var(--ink);background:#fff;
  transition:.16s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(11,46,79,.08);
}
.field textarea{resize:vertical;min-height:110px;line-height:1.7}
.field select{appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7684' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");background-repeat:no-repeat;background-position:right 13px center;background-size:15px;padding-right:38px}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.75}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none!important}

/* ---------- 提交成功 ---------- */
.form-done{
  background:var(--bg);border:1px solid var(--line);border-radius:0;
  padding:36px 32px 30px;text-align:left;
}
.done-mark{
  width:44px;height:44px;border-radius:0;margin:0 0 18px;
  background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;
}
.done-mark svg{width:22px;height:22px}
.form-done h3{font-size:20px;margin-bottom:8px}
.done-sub{font-size:12px;color:var(--muted);margin-bottom:20px;font-family:var(--mono);letter-spacing:.04em}
.done-sub b{color:var(--ink)}
.done-lead{font-size:14px;color:var(--ink-2);line-height:1.85;margin-bottom:14px}
.done-reply{
  font-size:13px;color:var(--ink-2);background:var(--accent-soft);
  border-left:2px solid var(--accent);border-radius:0;
  padding:14px 16px;line-height:1.8;margin-bottom:20px;text-align:left;
}
.done-reply b{font-weight:600}
.done-next{text-align:left;display:grid;gap:10px;margin:0 0 24px;padding:0}
.done-next li{position:relative;padding-left:16px;font-size:13px;color:var(--muted);line-height:1.7}
.done-next li::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;background:var(--accent)}
.done-next a{color:var(--brand);font-weight:600}

/* ---------- CTA 长条 ---------- */
.cta-band{
  background:var(--brand);color:#fff;border-radius:0;padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band h2{font-size:clamp(21px,2.4vw,27px);margin-bottom:9px}
.cta-band p{color:rgba(255,255,255,.72);font-size:14.5px}

/* ---------- 页脚 ---------- */
.footer{background:#0A1F2E;color:rgba(255,255,255,.6);padding:60px 0 0;font-size:13.5px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:44px}
.footer h4{color:#fff;font-size:13px;margin-bottom:16px;letter-spacing:.1em;text-transform:uppercase;font-family:var(--mono);font-weight:500}
.footer .brand-text strong{color:#fff}
.footer .brand-text span{color:rgba(255,255,255,.4)}
.footer .brand-mark{border-color:rgba(255,255,255,.5)}
.footer .brand-mark .mk{color:#fff}
.footer-desc{margin-top:16px;line-height:1.9;font-size:13px;color:rgba(255,255,255,.5);max-width:310px}
.footer ul{display:grid;gap:10px}
.footer ul a{transition:color .2s;font-size:13px}
.footer ul a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;font-size:13px;line-height:1.7;margin-bottom:12px}
.footer-contact svg{width:15px;height:15px;flex-shrink:0;margin-top:4px;opacity:.55}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.38);font-family:var(--mono);letter-spacing:.02em;
}
.footer-bottom a:hover{color:rgba(255,255,255,.8)}

/* ---------- 侧边悬浮咨询 ---------- */
.float-consult{
  position:fixed;right:20px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:10px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:2px;
  padding:11px 18px 11px 12px;
  font-size:13.5px;font-weight:600;line-height:1.3;
  transition:.2s var(--ease);
}
.float-consult:hover{background:#08243D}
.float-consult .fi{
  width:24px;height:24px;border-radius:0;display:grid;place-items:center;flex-shrink:0;
  background:rgba(255,255,255,.14);color:#fff;
}
.float-consult .fi svg{width:14px;height:14px}
.float-consult small{display:block;font-weight:400;font-size:10.5px;color:rgba(255,255,255,.7);line-height:1.2}

/* 快捷导航与首个方案之间收紧间距 */
#plating{padding-top:52px}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:26px;display:grid;gap:30px}
.timeline::before{
  content:"";position:absolute;left:3px;top:6px;bottom:6px;width:1px;background:var(--line-strong);
}
.timeline li{position:relative}
.timeline li::before{
  content:"";position:absolute;left:-26px;top:7px;width:7px;height:7px;
  background:var(--accent);
}
.timeline time{
  display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.08em;
  color:var(--accent);background:transparent;
  padding:0;margin-bottom:7px;
}
.timeline h3{font-size:16.5px;margin-bottom:5px}
.timeline p{color:var(--muted);font-size:14px;line-height:1.85}

/* ---------- 案例筛选 ---------- */
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.filter-btn{
  padding:8px 18px;border-radius:2px;border:1px solid var(--line-strong);background:transparent;
  font-family:inherit;font-size:13.5px;font-weight:500;color:var(--ink-2);cursor:pointer;
  transition:.18s var(--ease);
}
.filter-btn:hover{border-color:var(--brand);color:var(--brand)}
.filter-btn.is-active{background:var(--brand);border-color:var(--brand);color:#fff}

.case-meta{display:flex;gap:7px;margin-bottom:10px;flex-wrap:wrap}
.case-meta span{
  font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.04em;
  padding:3px 7px;border-radius:0;background:transparent;color:var(--muted);
  border:1px solid var(--line);
}
.case-meta span:first-child{background:var(--accent-soft);color:var(--accent);border-color:#EBD6C7}

/* ---------- 地图占位 ---------- */
.map-placeholder{
  border:1px solid var(--line);border-radius:0;
  background:
    linear-gradient(rgba(11,46,79,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,46,79,.045) 1px,transparent 1px),
    var(--bg-soft);
  background-size:38px 38px,38px 38px,100% 100%;
  min-height:340px;display:grid;place-items:center;padding:48px 24px;text-align:center;
}
.map-inner{max-width:520px}
.map-inner svg{width:40px;height:40px;color:var(--accent);margin:0 auto 18px}
.map-inner h3{font-size:17.5px;margin-bottom:9px}
.map-inner p{color:var(--muted);font-size:13.5px;margin-bottom:20px;line-height:1.85}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .burger{display:grid}
  .split,.contact-grid{grid-template-columns:1fr;gap:36px}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .stats-band{grid-template-columns:repeat(2,1fr)}
  .stats-band > div:nth-child(2){border-right:0}
  .stats-band > div:nth-child(1),.stats-band > div:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav.open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;top:76px;left:0;right:0;
    background:var(--bg);border-bottom:1px solid var(--line);
    padding:6px 40px 18px;
  }
  .nav.open .nav-links > li > a{padding:13px 0;font-size:15px;border-bottom:1px solid var(--line)}
  .nav.open .nav-links > li > a.active{border-bottom-color:var(--line)}
}
@media (max-width:760px){
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .hero .wrap{padding:44px 20px 0}
  .hero-actions{margin-bottom:28px;flex-direction:column;align-items:stretch;gap:10px}
  .hero-inner{padding-bottom:26px}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr 1fr;margin:0 -20px}
  .hero-stats div{padding:16px 20px 14px}
  .hero-stats div:nth-child(2){border-right:0}
  .hero-stats div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .form{padding:22px 18px}
  .topbar .wrap{height:auto;min-height:34px;padding:7px 20px;justify-content:center}
  .topbar-left{display:none}
  .topbar-right{font-size:11.5px;gap:14px}
  .float-consult{right:10px;bottom:10px;padding:8px;gap:0}
  .float-consult .fi{width:24px;height:24px;background:transparent}
  .float-consult > span:last-child{display:none}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .stats-band{grid-template-columns:1fr}
  .stats-band > div{border-right:0;border-bottom:1px solid var(--line)}
  .stats-band > div:last-child{border-bottom:0}
  .page-hero .wrap{padding:36px 20px 32px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 现场视频 ---------- */
.vids{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.vid{margin:0}
.vid video{width:100%;display:block;border-radius:0;background:#0A1F2E;
  aspect-ratio:9/16;object-fit:cover;border:1px solid var(--line)}
.vid figcaption{margin-top:9px;font-size:12.5px;color:var(--muted);text-align:center}
@media (max-width:760px){.vids{grid-template-columns:1fr;gap:18px}}

/* 结晶反应器：设备实拍 + 工作原理图 并排 */
.crystal-media{display:flex;gap:22px;justify-content:center;align-items:flex-start;margin:4px 0 50px}
.cm-item{margin:0;flex:0 1 auto;max-width:100%}
.cm-item img{display:block;height:560px;width:auto;max-width:100%;border-radius:0;
  border:1px solid var(--line);background:#EFF1EF}
.cm-item figcaption{margin-top:9px;font-size:12px;color:var(--muted);text-align:center;font-family:var(--mono);letter-spacing:.03em}
@media (max-width:900px){
  .crystal-media{flex-direction:column;align-items:center;gap:26px;margin-bottom:38px}
  .cm-item img{height:auto;width:100%;max-width:420px}
}

/* 结晶反应器：设备图轮播（实物 ⇄ 安装态三维） */
.cm-slider{position:relative;width:470px;max-width:100%;height:560px;
  border:1px solid var(--line);background:#fff;overflow:hidden}
.cm-slide{position:absolute;inset:0;opacity:0;transition:opacity .45s var(--ease);pointer-events:none}
.cm-slide.is-active{opacity:1;pointer-events:auto}
.cm-slide img{display:block;width:100%;height:100%;object-fit:contain;border:0;background:#fff}
.cm-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;padding:0;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  border:1px solid rgba(11,59,46,.14);border-radius:50%;
  background:rgba(255,255,255,.94);color:var(--ink);
  box-shadow:0 3px 12px rgba(11,59,46,.16);
  transition:background .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s;z-index:3}
.cm-arrow:hover{background:var(--accent);color:#fff;border-color:var(--accent);
  box-shadow:0 5px 16px rgba(11,59,46,.28)}
.cm-arrow:active{transform:translateY(-50%) scale(.94)}
.cm-arrow::before{content:"";width:8px;height:8px;
  border-top:2px solid currentColor;border-right:2px solid currentColor}
.cm-arrow--prev{left:10px}
.cm-arrow--prev::before{transform:rotate(-135deg);margin-left:3px}
.cm-arrow--next{right:10px}
.cm-arrow--next::before{transform:rotate(45deg);margin-right:3px}
.cm-count{position:absolute;right:0;top:0;padding:4px 9px;font-family:var(--mono);
  font-size:11.5px;letter-spacing:.06em;color:var(--muted);
  background:rgba(255,255,255,.92);border-left:1px solid var(--line);border-bottom:1px solid var(--line)}
.cm-count b{font-weight:500;color:var(--ink)}
.cm-dots{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);display:flex;gap:7px;z-index:3;
  padding:5px 9px;border-radius:999px;background:rgba(255,255,255,.9);box-shadow:0 2px 10px rgba(11,59,46,.12)}
.cm-dots button{width:26px;height:4px;padding:0;border:0;cursor:pointer;border-radius:2px;
  background:rgba(11,59,46,.22);transition:background .2s,width .2s}
.cm-dots button.is-active{background:var(--accent);width:38px}
@media (max-width:900px){
  .cm-item--slider{width:100%;max-width:420px}
  .cm-slider{width:100%;max-width:420px;height:auto;aspect-ratio:470/560}
  .kz-slider.kz-fixed{width:100%;max-width:420px;height:auto;aspect-ratio:470/560}
  .cm-slide img{border:0}
}
@media (max-width:420px){
  .cm-arrow{width:34px;height:34px}
  .cm-arrow--prev{left:6px}
  .cm-arrow--next{right:6px}
}

/* ============ 通用图片轮播（任何图位只要是两张以上就自动生效） ============ */
.kz-slider{position:relative;display:block;overflow:hidden;line-height:0;
  -webkit-user-select:none;user-select:none;touch-action:pan-y}
.kz-slider>.kz-slide{display:block;width:100%;height:auto;margin:0;border:0}
.kz-slider>.kz-slide.kz-abs{position:absolute;left:0;top:0;width:100%;height:100%;
  object-fit:cover;opacity:0;transition:opacity .5s var(--ease);pointer-events:none}
.kz-slider>.kz-slide.is-active{opacity:1;pointer-events:auto}
.kz-slider.is-dragging{cursor:grabbing}
.kz-slider.is-dragging>.kz-slide.is-active{transition:none}

.kz-nav{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;padding:0;
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:4;
  border:1px solid rgba(11,59,46,.14);border-radius:50%;
  background:rgba(255,255,255,.94);color:var(--ink);
  box-shadow:0 3px 12px rgba(11,59,46,.16);
  transition:background .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s}
.kz-nav:hover{background:var(--accent);color:#fff;border-color:var(--accent);
  box-shadow:0 5px 16px rgba(11,59,46,.28)}
.kz-nav:active{transform:translateY(-50%) scale(.94)}
.kz-nav::before{content:"";width:8px;height:8px;
  border-top:2px solid currentColor;border-right:2px solid currentColor}
.kz-nav--prev{left:12px}
.kz-nav--prev::before{transform:rotate(-135deg);margin-left:3px}
.kz-nav--next{right:12px}
.kz-nav--next::before{transform:rotate(45deg);margin-right:3px}

.kz-count{position:absolute;right:12px;top:12px;z-index:4;
  padding:4px 10px;border-radius:999px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.08em;color:#fff;background:rgba(11,59,46,.62);backdrop-filter:blur(3px)}
.kz-dots{position:absolute;left:50%;bottom:12px;transform:translateX(-50%);z-index:4;
  display:flex;gap:7px;padding:5px 9px;border-radius:999px;
  background:rgba(255,255,255,.9);box-shadow:0 2px 10px rgba(11,59,46,.12)}
.kz-dots button{width:26px;height:4px;padding:0;border:0;cursor:pointer;border-radius:2px;
  background:rgba(11,59,46,.22);transition:background .2s,width .2s}
.kz-dots button.is-active{background:var(--accent);width:38px}

/* 固定画框的轮播（结晶反应器那块：竖图统一装进 470×560 白框） */
.kz-slider.kz-fixed{width:470px;max-width:100%;height:560px;background:#fff;border:1px solid var(--line)}
.cm-item--slider{flex:0 0 auto}
.kz-slider.kz-fixed>.kz-slide{position:absolute;left:0;top:0;width:100%;height:100%;
  object-fit:contain;background:#fff;border:0}

@media (max-width:760px){
  .kz-slider.kz-fixed{width:100%;max-width:420px;height:auto;aspect-ratio:470/560}
  .kz-nav{width:34px;height:34px}
  .kz-nav--prev{left:7px}
  .kz-nav--next{right:7px}
  .kz-dots{bottom:8px;padding:4px 7px;gap:5px}
  .kz-dots button{width:18px;height:3px}
  .kz-dots button.is-active{width:28px}
  .kz-count{right:8px;top:8px;font-size:10.5px;padding:3px 8px}
}

/* ============ 点图放大（所有图片通用） ============ */
img[data-slot],.kz-slide,.cm-slide img,.cert-photo{cursor:zoom-in}
.kz-lightbox{position:fixed;inset:0;z-index:9990;display:none;align-items:center;justify-content:center;
  background:rgba(7,12,10,.95);opacity:0;transition:opacity .2s;touch-action:pan-y}
.kz-lightbox.on{display:flex;opacity:1}
.kz-lb-img{max-width:92vw;max-height:84vh;width:auto;height:auto;object-fit:contain;
  box-shadow:0 28px 80px rgba(0,0,0,.6);background:#fff}
.kz-lb-close{position:absolute;right:18px;top:16px;width:42px;height:42px;border:0;border-radius:50%;
  background:rgba(255,255,255,.14);color:#fff;font-size:26px;line-height:1;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .18s}
.kz-lb-close:hover{background:rgba(255,255,255,.28)}
.kz-lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border:0;border-radius:50%;
  background:rgba(255,255,255,.14);color:#fff;cursor:pointer;
  display:flex;align-items:center;justify-content:center;transition:background .18s}
.kz-lb-nav:hover{background:rgba(255,255,255,.28)}
.kz-lb-nav::before{content:"";width:10px;height:10px;
  border-top:2px solid currentColor;border-right:2px solid currentColor}
.kz-lb-prev{left:20px}
.kz-lb-prev::before{transform:rotate(-135deg);margin-left:4px}
.kz-lb-next{right:20px}
.kz-lb-next::before{transform:rotate(45deg);margin-right:4px}
.kz-lb-bar{position:absolute;left:0;right:0;bottom:18px;display:flex;gap:14px;
  justify-content:center;align-items:baseline;padding:0 70px;text-align:center;
  color:rgba(255,255,255,.74);font-size:12.5px;letter-spacing:.02em}
.kz-lb-idx{font-family:var(--mono);color:rgba(255,255,255,.5);white-space:nowrap}
@media (max-width:760px){
  .kz-lb-img{max-width:94vw;max-height:76vh}
  .kz-lb-nav{width:40px;height:40px}
  .kz-lb-prev{left:8px}
  .kz-lb-next{right:8px}
  .kz-lb-close{right:10px;top:10px;width:38px;height:38px;font-size:23px}
  .kz-lb-bar{bottom:12px;font-size:11.5px;padding:0 52px}
}

/* 页脚 · 网站设置入口（本机编辑用，样式压低存在感） */
.fb-right{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.foot-admin{
  border:1px solid rgba(255,255,255,.18);padding:2px 8px;font-size:11.5px;
  color:rgba(255,255,255,.45);letter-spacing:.04em;transition:color .2s,border-color .2s;
}
.foot-admin:hover{color:#fff;border-color:rgba(255,255,255,.5)}

/* 工艺流程图 / 原理示意图（矢量图，随容器缩放） */
.diagram{margin:30px 0 0;border:1px solid var(--line);background:#fff}
.diagram img{display:block;width:100%;height:auto}
.diagram figcaption{
  padding:10px 14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);letter-spacing:.01em;
  display:flex;gap:8px;align-items:baseline;
}
@media (max-width:760px){.diagram figcaption{font-size:12px;line-height:1.6}}

/* 首页·技术服务行列表 */
.svc-row{
  display:grid;grid-template-columns:54px 1fr 118px;gap:24px;align-items:baseline;
  padding:26px 6px;text-decoration:none;
}
.svc-row:hover{background:var(--bg-soft)}
.svc-row .svc-n{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.12em;color:var(--accent)}
.svc-row h3{font-size:17.5px;margin-bottom:7px;color:var(--ink)}
.svc-row p{color:var(--muted);font-size:14.2px;line-height:1.85;margin:0}
.svc-row .svc-go{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--accent);text-align:right;white-space:nowrap}
@media (max-width:760px){
  .svc-row{grid-template-columns:30px 1fr;gap:14px;padding:22px 4px}
  .svc-row .svc-go{display:none}
  .svc-row h3{font-size:16.5px}
  .svc-row p{font-size:13.8px}
}