/* 如影科技官网 · 全站样式（品牌色 #1A63D8 蓝，衍生自售后自助页） */
:root{
  --brand:#1A63D8;
  --brand-dark:#1450B0;
  --brand-soft:#EEF4FF;
  --brand-line:#C7DBF7;
  --bg:#FFFFFF;
  --bg-alt:#F5F8FD;
  --card:#FFFFFF;
  --text:#16181D;
  --text2:#5A6270;
  --text3:#9AA2AE;
  --line:#E7EBF2;
  --ok:#0A9E57;
  --bad:#D9482B;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.05),0 4px 16px rgba(20,80,176,.07);
  --maxw:1120px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",sans-serif;
  background:var(--bg);color:var(--text);
  font-size:16px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{line-height:1.35;margin:0 0 .4em;letter-spacing:-.01em}
h1{font-size:clamp(26px,4.2vw,42px);font-weight:700}
h2{font-size:clamp(20px,2.6vw,28px);font-weight:700}
h3{font-size:17px;font-weight:600}
p{margin:.4em 0}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container.narrow{max-width:820px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:8px 16px;border-radius:0 0 8px 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;border-radius:10px;padding:0 22px;height:44px;
  transition:.18s;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.btn-outline-light:hover{border-color:#fff;color:#fff}
.btn-sm{height:36px;padding:0 14px;font-size:14px;border-radius:9px}
.btn-lg{height:50px;padding:0 30px;font-size:16px;border-radius:12px}

/* ---------- 顶栏 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:9px;color:var(--text);flex:none}
.brand:hover{color:var(--brand)}
.brand img{width:34px;height:34px}
.brand-name{font-size:19px;font-weight:700;letter-spacing:-.02em}
.brand-sub{font-size:12px;color:var(--text3);border-left:1px solid var(--line);padding-left:9px;
  max-width:9em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{color:var(--text2);font-size:15px;font-weight:500;padding:8px 14px;border-radius:9px}
.nav a:hover{color:var(--brand);background:var(--brand-soft)}
.nav a.on{color:var(--brand);background:var(--brand-soft);font-weight:600}
.header-cta{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:4px;width:40px;height:40px;
  border-radius:9px;border:1px solid var(--line);background:#fff;cursor:pointer;padding:0 9px}
.nav-toggle span{display:block;height:2px;background:var(--text);border-radius:2px;transition:.2s}
.nav-toggle.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(160deg,#EFF5FF 0%,#FFFFFF 55%);padding:56px 0 64px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(26,99,216,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(26,99,216,.05) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(70% 80% at 70% 30%,#000 0%,transparent 100%);
  mask-image:radial-gradient(70% 80% at 70% 30%,#000 0%,transparent 100%)}
.hero::after{content:"";position:absolute;width:520px;height:520px;right:-140px;top:-160px;pointer-events:none;
  background:radial-gradient(circle,rgba(59,130,246,.16) 0%,rgba(59,130,246,0) 65%);
  animation:heroGlow 7s ease-in-out infinite alternate}
@keyframes heroGlow{from{transform:translate(0,0) scale(1);opacity:.8}to{transform:translate(-40px,30px) scale(1.12);opacity:1}}
.hero .container{position:relative;z-index:1}
.hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;border-radius:999px;padding:5px 14px;margin:0 0 14px}
.hero h1{font-size:clamp(30px,4.6vw,46px);margin-bottom:.3em}
.hero-sub{font-size:clamp(15px,1.6vw,17px);color:var(--text2);max-width:30em}
.hero-cta{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.hero-cta.center{justify-content:center}
.hero-points{display:flex;gap:18px;list-style:none;padding:0;margin:26px 0 0;flex-wrap:wrap}
.hero-points li{font-size:13.5px;color:var(--text2);display:flex;align-items:center;gap:6px}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
.hero-media{margin:0}
.hero-media img{border-radius:20px;box-shadow:var(--shadow);width:100%;aspect-ratio:4/3;object-fit:cover}

/* Hero 雷达扫描动画（蓝色科技感） */
.radar-hero{position:relative;aspect-ratio:4/3;border-radius:20px;overflow:hidden;
  background:linear-gradient(150deg,#0B2B63 0%,#103A85 55%,#1450B0 100%);
  box-shadow:0 12px 40px rgba(16,60,150,.35),inset 0 0 0 1px rgba(140,180,255,.18)}
.rh-grid{position:absolute;inset:0;
  background-image:linear-gradient(rgba(147,190,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(147,190,255,.09) 1px,transparent 1px);
  background-size:34px 34px}
.rh-ring{position:absolute;border:1px solid rgba(190,215,255,.22);border-radius:50%}
.rh-sweep{position:absolute;inset:0;
  background:conic-gradient(from 0deg,rgba(96,165,250,.75) 0deg,rgba(96,165,250,.12) 55deg,transparent 90deg);
  animation:rhSweep 3.6s linear infinite}
@keyframes rhSweep{to{transform:rotate(360deg)}}
.rh-person{position:absolute;width:12px;height:12px;border-radius:50%;background:#BFDBFE;
  box-shadow:0 0 0 5px rgba(147,197,253,.25),0 0 16px rgba(147,197,253,.9);
  animation:rhBlink 2.2s ease-in-out infinite}
.rh-person.p2{animation-delay:1.1s}
@keyframes rhBlink{0%,100%{box-shadow:0 0 0 4px rgba(147,197,253,.18),0 0 10px rgba(147,197,253,.6)}
  50%{box-shadow:0 0 0 9px rgba(147,197,253,.3),0 0 22px rgba(147,197,253,1)}}
.rh-label{position:absolute;left:16px;bottom:12px;color:#CFE2FF;font-size:12.5px;letter-spacing:.02em;
  display:flex;align-items:center;gap:7px}
.rh-label::before{content:"";width:7px;height:7px;border-radius:50%;background:#4ADE80;
  box-shadow:0 0 8px rgba(74,222,128,.9);animation:rhBlink 1.6s ease-in-out infinite}

/* ---------- 通用 section ---------- */
.section{padding:56px 0}
.section.alt{background:var(--bg-alt)}
.sec-title{font-size:clamp(21px,2.6vw,27px)}
.sec-sub{color:var(--text2);margin-top:-6px;margin-bottom:26px}
.sec-sub a{font-weight:600}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:8px}
.link-more{font-weight:600;font-size:14.5px;white-space:nowrap}
.mini-title{font-size:18px;font-weight:700;margin:28px 0 12px}
.page-head{padding:44px 0 8px}
.page-head h1{margin-bottom:.25em}
.page-desc{color:var(--text2);max-width:44em}
.page-meta{display:flex;align-items:center;gap:10px;color:var(--text3);font-size:13.5px}

/* ---------- 网格与卡片 ---------- */
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.feature .f-icon{width:44px;height:44px;border-radius:11px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature .f-icon svg{width:24px;height:24px}
.feature p{color:var(--text2);font-size:14.5px}

/* 产品卡 */
.product-card{position:relative;color:var(--text);display:flex;flex-direction:column;gap:2px;transition:.18s}
.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line);color:var(--text)}
.product-card h2,.product-card h3{margin:2px 0 0}
.badge{display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  border-radius:999px;padding:2px 10px;width:max-content}
.p-sub{color:var(--text2);font-size:13.5px;margin:2px 0}
.p-fit{color:var(--text3);font-size:12.5px;margin:2px 0 8px}
.p-more{margin-top:auto;color:var(--brand);font-size:13.5px;font-weight:600}
.p-figure{margin:0 0 12px;position:relative}
.p-figure img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;background:var(--bg-alt)}
.p-figure .badge{position:absolute;top:10px;left:10px}
.product-card.tall h2{font-size:19px}

/* 对比 */
.compare{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center}
.compare-media img{border-radius:16px;background:#fff;border:1px solid var(--line);padding:14px;box-shadow:var(--shadow)}
.compare-copy .sec-title{margin-bottom:16px}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
.table th,.table td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table thead th{font-size:13px;color:var(--text2);font-weight:600;background:var(--bg-alt)}
.compare-table th:first-child,.compare-table td:first-child{color:var(--text2);white-space:nowrap}
.table .ok{color:var(--ok);font-weight:600}
.table .bad{color:var(--bad)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;-webkit-overflow-scrolling:touch}
.table-wrap .table{min-width:640px;margin:0;border:0}
.compare-all a{font-weight:600}
.spec-table th{width:38%;color:var(--text2);font-weight:500;background:var(--bg-alt)}
.spec-table{border:1px solid var(--line);border-radius:12px;overflow:hidden}

/* ---------- FAQ ---------- */
.faq-tools{margin-bottom:8px}
.search{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;height:50px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,99,216,.1)}
.search svg{color:var(--text3);flex:none}
.search input{flex:1;border:0;outline:0;font-size:15.5px;background:transparent;color:var(--text);min-width:0}
.search input::placeholder{color:var(--text3)}
.chips{display:flex;gap:8px;overflow-x:auto;padding:12px 0 4px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;height:34px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--text2);cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.on{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq-item summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:15px 18px;cursor:pointer;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary h3{font-size:15.5px;font-weight:600;margin:0}
.faq-item summary:hover h3{color:var(--brand)}
.chev{flex:none;width:9px;height:9px;border-right:2px solid var(--text3);border-bottom:2px solid var(--text3);
  transform:rotate(45deg);transition:.2s;margin-top:-3px}
.faq-item details[open] .chev,.faq-item[open] .chev{transform:rotate(225deg);border-color:var(--brand)}
.faq-body{padding:2px 18px 16px;color:var(--text2);font-size:14.5px}
.faq-body p{margin:.5em 0}
.faq-fig{margin:14px 0 4px}
.faq-fig img{border-radius:10px;border:1px solid var(--line);width:100%;max-width:560px;background:#fff;padding:10px}
.faq-fig figcaption{font-size:12.5px;color:var(--text3);text-align:center;margin-top:6px}
.faq-link{font-weight:600;font-size:13.5px;display:inline-block;margin-top:8px}
.faq-empty{text-align:center;color:var(--text2);padding:30px 0}
.hot-block{margin-bottom:8px}

/* FAQ 详情页 */
.faq-article h1{font-size:clamp(22px,3vw,32px)}
.faq-answer{margin-top:18px;font-size:16px;color:var(--text)}
.faq-answer p{margin:.6em 0}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{display:inline-block;background:var(--brand-soft);color:var(--brand);font-size:12.5px;
  font-weight:600;border-radius:999px;padding:3px 11px}
.tag.soft{background:var(--bg-alt);color:var(--text2);font-weight:500}
.faq-more{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}

/* ---------- 视频卡 ---------- */
.video-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.video-thumb{position:relative;display:block;width:100%;border:0;background:var(--bg-alt);padding:0;cursor:pointer}
.video-thumb img{aspect-ratio:16/9;object-fit:cover;width:100%}
.video-thumb .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.video-thumb .play::before{content:"";width:52px;height:52px;border-radius:50%;background:rgba(0,0,0,.45);
  border:2px solid rgba(255,255,255,.85);transition:.18s}
.video-thumb .play::after{content:"";position:absolute;border-style:solid;border-width:9px 0 9px 15px;
  border-color:transparent transparent transparent #fff;margin-left:3px}
.video-thumb:hover .play::before{background:var(--brand);transform:scale(1.08)}
.video-thumb .dur{position:absolute;right:10px;bottom:10px;background:rgba(0,0,0,.65);color:#fff;
  font-size:12px;border-radius:6px;padding:2px 7px}
.video-meta{padding:14px 16px 18px}
.video-meta h2,.video-meta h3{font-size:15.5px;margin:4px 0 4px}
.video-meta p{color:var(--text2);font-size:13.5px;margin:0}
.video-modal{position:fixed;inset:0;z-index:300;background:rgba(10,12,16,.78);display:flex;
  align-items:center;justify-content:center;padding:20px}
.video-modal[hidden]{display:none}
.vm-box{position:relative;width:min(880px,100%);background:#000;border-radius:14px;overflow:hidden}
.vm-box .vm-player iframe,.vm-box .vm-player video{width:100%;aspect-ratio:16/9;display:block;border:0;background:#000}
.vm-close{position:absolute;top:10px;right:10px;z-index:5;width:36px;height:36px;border-radius:50%;
  border:0;background:rgba(255,255,255,.15);color:#fff;font-size:22px;cursor:pointer;line-height:1}
.vm-close:hover{background:var(--brand)}
.vm-title{color:#fff;padding:12px 16px;margin:0;font-size:14.5px;background:#111}

/* ---------- 产品详情 ---------- */
.product-hero{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;align-items:center}
.ph-media img{border-radius:18px;box-shadow:var(--shadow);background:var(--bg-alt);aspect-ratio:4/3;object-fit:cover}
.crumbs{font-size:13px;color:var(--text3);margin-bottom:12px}
.crumbs a{color:var(--text3)}
.crumbs a:hover{color:var(--brand)}
.crumbs span{color:var(--text2)}
.ph-badge{font-size:12px;vertical-align:middle;margin-left:10px}
.ph-sub{color:var(--text2);font-size:16px;margin-top:-4px}
.ph-intro{color:var(--text2);margin-top:10px}
.ph-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.product-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:start}
.sec-title.mt{margin-top:34px}
.pros ul,.cons ul,.tips-card ul,.contact-list{margin:8px 0;padding-left:20px;color:var(--text2)}
.pros li::marker{content:"✓ ";color:var(--ok)}
.cons li::marker{content:"! ";color:var(--bad);font-weight:700}
.side-card{margin-bottom:16px}
.side-card h3{font-size:15px}
.rel-list{list-style:none;margin:0;padding:0}
.rel-list li{border-top:1px dashed var(--line);padding:9px 0}
.rel-list li:first-child{border-top:0}
.rel-list a{color:var(--text2);font-size:14px;display:block}
.rel-list a:hover{color:var(--brand)}
.rel-list li::before{content:"Q";color:var(--brand);font-weight:700;margin-right:8px;font-size:13px}

/* ---------- 选型助手 ---------- */
.wizard{display:flex;flex-direction:column;gap:16px}
.wiz-q legend{font-weight:700;font-size:16.5px;padding:0}
.wiz-q{padding:20px 22px}
.wiz-hint{color:var(--text3);font-size:13px;margin:4px 0 14px}
.wiz-opts{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.wiz-opt input{position:absolute;opacity:0;pointer-events:none}
.wo-box{display:block;border:1.5px solid var(--line);border-radius:11px;padding:11px 14px;cursor:pointer;transition:.15s}
.wo-box strong{display:block;font-size:14.5px;font-weight:600}
.wo-box em{display:block;font-style:normal;color:var(--text3);font-size:12.5px;margin-top:2px}
.wiz-opt input:checked + .wo-box{border-color:var(--brand);background:var(--brand-soft)}
.wiz-opt input:checked + .wo-box strong{color:var(--brand)}
.wiz-opt input:focus-visible + .wo-box{box-shadow:0 0 0 3px rgba(26,99,216,.15)}
.wiz-actions{display:flex;gap:12px;flex-wrap:wrap}
.wiz-result{margin-top:34px}
#wizCards .rec-card{display:flex;gap:16px;align-items:flex-start;margin-bottom:14px}
#wizCards .rec-rank{flex:none;width:30px;height:30px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}
#wizCards .rec-card.best .rec-rank{background:var(--brand);color:#fff}
#wizCards h3{margin:0}
#wizCards .rec-why{color:var(--text2);font-size:14px;margin:4px 0 0}
.rec-tag{display:inline-block;font-size:11.5px;color:#fff;background:var(--brand);border-radius:999px;
  padding:1px 9px;margin-left:8px;vertical-align:2px}
.tips-card{margin-top:18px}
.wiz-again{margin-top:18px}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.contact-card h2{font-size:19px}
.contact-card p{color:var(--text2);font-size:14.5px}
.primary-card{border-color:var(--brand-line);background:linear-gradient(170deg,var(--brand-soft),#fff);text-align:center;
  display:flex;flex-direction:column;align-items:center}
.cc-icon{width:56px;height:56px;border-radius:16px;background:var(--brand);color:#fff;display:flex;
  align-items:center;justify-content:center;margin-bottom:14px}
.cc-icon svg{width:30px;height:30px}
.primary-card .btn{margin-top:6px}
.qr-fig{margin:18px 0 0}
.qr-fig img{margin:0 auto;border:1px solid var(--line);border-radius:12px;padding:8px;background:#fff;width:170px;height:170px}
.qr-fig figcaption{font-size:12.5px;color:var(--text3);margin-top:8px}
.muted{color:var(--text3);font-size:13px}
.empty-card{text-align:center;padding:44px 20px}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,#1A63D8,#3B82F6);color:#fff;padding:44px 0}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-in h2{color:#fff;margin:0}
.cta-in p{color:rgba(255,255,255,.9);margin:.3em 0 0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#111722;color:#B9C2D0;margin-top:40px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;padding:44px 20px 30px}
.site-footer .brand{color:#fff}
.site-footer h3{color:#fff;font-size:14.5px;margin-bottom:12px}
.f-nav a,.f-contact p{display:block;color:#B9BFC9;margin:7px 0;font-size:13.5px}
.f-nav a:hover{color:#fff}
.f-slogan{color:#fff;font-size:15px;margin:14px 0 4px}
.f-sub{font-size:12.5px;color:#7C828D;max-width:26em}
.kf-link{display:inline-block;font-weight:700;font-size:15px;margin-bottom:6px}
.footer-base{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid #26292F;
  padding:16px 20px;font-size:12.5px;color:#7C828D}
.footer-base a{color:#9AA2AE}
.footer-base a:hover{color:#fff}

/* ---------- 悬浮客服 ---------- */
.float-kf{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;align-items:center;gap:7px;
  background:var(--brand);color:#fff;font-weight:600;font-size:14px;border-radius:999px;
  padding:11px 18px;box-shadow:0 6px 20px rgba(26,99,216,.35);transition:.18s}
.float-kf:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}

/* ---------- 404 ---------- */
.nf-code{font-size:64px;font-weight:800;color:var(--brand-soft);margin:0;line-height:1;
  -webkit-text-stroke:2px var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width: 960px){
  .hero-in{grid-template-columns:1fr;gap:28px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/9}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .compare{grid-template-columns:1fr;gap:24px}
  .product-hero{grid-template-columns:1fr;gap:24px}
  .product-grid{grid-template-columns:1fr;gap:24px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 700px){
  body{font-size:15px}
  .section{padding:40px 0}
  .hero{padding:32px 0 40px}
  .header-in{height:56px;gap:12px}
  .brand-sub{display:none}
  .nav{position:fixed;top:56px;left:0;right:0;background:#fff;flex-direction:column;gap:2px;
    padding:10px 14px 16px;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(16,24,40,.08);
    display:none;margin:0;z-index:99}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;font-size:16px;border-radius:10px}
  .nav-toggle{display:flex}
  .header-cta .btn{display:none}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .wiz-opts{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:4px}
  .footer-grid{grid-template-columns:1fr;gap:22px;padding:32px 20px 20px}
  .cta-in{flex-direction:column;align-items:flex-start}
  .float-kf{right:14px;bottom:16px;padding:10px 16px}
  .compare-all{font-size:13px}
  .faq-item summary{padding:13px 14px}
  .faq-body{padding:0 14px 14px}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto}
}

/* ===================== V2：蓝色主题扩展组件 ===================== */

/* 产品中心：视图切换 */
.view-toggle{display:inline-flex;gap:4px;background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;padding:4px;margin-top:18px}
.vt-btn{border:0;background:transparent;color:var(--text2);font-size:14.5px;font-weight:600;
  border-radius:9px;padding:9px 20px;cursor:pointer;transition:.15s}
.vt-btn.on{background:var(--brand);color:#fff;box-shadow:0 2px 8px rgba(26,99,216,.3)}

/* 形态分块与系列标题 */
.form-block{scroll-margin-top:80px}
.series-block{margin-top:26px}
.series-name{display:flex;align-items:center;gap:12px;font-size:16.5px;font-weight:700;margin-bottom:16px}
.series-name .series-line{flex:1;height:1px;background:var(--line)}
.model-grid{margin-bottom:10px}

/* 型号卡 */
.model-card{color:var(--text);display:flex;flex-direction:column;transition:.18s;padding:16px}
.model-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.mc-head{display:flex;flex-direction:column;gap:1px;margin-bottom:8px}
.mc-model{font-size:12px;font-weight:700;color:var(--brand);letter-spacing:.03em}
.mc-head h3{font-size:16px;margin:0}
.mc-specs{list-style:none;margin:0 0 8px;padding:0;font-size:12.5px}
.mc-specs li{display:flex;gap:8px;padding:3px 0;border-top:1px dashed var(--line)}
.mc-specs li:first-child{border-top:0}
.mc-specs span{color:var(--text3);flex:none;width:2.8em}
.mc-specs b{font-weight:500;color:var(--text2)}

/* 图片占位（照片/安装示意未上传时） */
.cover-ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:100%;aspect-ratio:16/10;background:linear-gradient(160deg,#EFF4FC,#E2EAF6);
  border-radius:10px;color:#8FA3C4;font-size:15px;font-weight:700;letter-spacing:.06em}
.cover-ph.model{font-size:17px}
.cover-ph.model i{font-style:normal;font-size:11.5px;font-weight:500;color:#A9B9D2;letter-spacing:.02em}
.cover-ph.model.big{aspect-ratio:4/3;border-radius:18px;font-size:26px}
.cover-ph.model.big b{font-size:30px}
.cover-ph.mini{width:72px;height:54px;aspect-ratio:auto;border-radius:6px;font-size:10.5px;font-weight:500;color:#A9B9D2}
.scene-cover .cover-ph{border-radius:0;aspect-ratio:16/9}
.p-figure .cover-ph{aspect-ratio:4/3}

/* 按系列选型 */
.pick-bar{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end;background:#fff;border:1px solid var(--line);
  border-radius:12px;padding:14px 16px;margin-bottom:16px}
.pick-bar label{display:flex;flex-direction:column;gap:5px;font-size:12.5px;color:var(--text2);font-weight:600}
.pick-bar select{height:36px;min-width:130px;border:1px solid var(--line);border-radius:9px;padding:0 10px;
  font-size:13.5px;background:#fff;color:var(--text)}
.pick-bar select:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,99,216,.1)}
.pk-img img{border-radius:6px;aspect-ratio:4/3;object-fit:cover}
.pk-scen{max-width:220px;color:var(--text2);font-size:12.5px}

/* 产品详情补充 */
.ph-model{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.03em;margin:0 0 6px}
.ph-badge{display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  border-radius:999px;padding:2px 10px;vertical-align:middle;margin-left:10px}
.ph-tags{margin-top:14px}
.ph-media{margin:0;position:relative}
.ph-media img{border-radius:18px;box-shadow:var(--shadow);background:var(--bg-alt);aspect-ratio:4/3;object-fit:cover}
.ph-media .cover-ph.model.big{box-shadow:var(--shadow)}
.ph-cap{font-size:12.5px;color:var(--text3);text-align:center;margin-top:8px}
.video-thumb-btn{cursor:pointer}
.manual-box{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px;color:var(--text2);font-size:14.5px}
.mt + .manual-box{margin-top:6px}

/* ---------- 售后自助服务页 ---------- */
.svc-hero{background:linear-gradient(150deg,#1A63D8,#3B82F6);color:#fff;padding:36px 0 30px}
.svc-hero h1{color:#fff;font-size:clamp(22px,3vw,30px);margin-bottom:4px}
.svc-hero p{margin:0;opacity:.88;font-size:14px}
.svc-stat{margin-top:10px;font-size:12.5px;opacity:.75}
.svc-toolbar{background:var(--bg-alt);border-bottom:1px solid var(--line);padding:14px 0 12px}
.svc-toolbar .search{height:44px;box-shadow:none}
.svc-toolbar .chips{padding:10px 0 2px}
.svc-general{color:var(--text)}
.svc-card{padding:0;overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.svc-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.svc-cover{position:relative;display:block;width:100%;border:0;background:var(--bg-alt);padding:0;cursor:pointer}
.svc-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.svc-cover .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.svc-cover .play::before{content:"";width:44px;height:44px;border-radius:50%;background:rgba(0,0,0,.45);
  border:2px solid rgba(255,255,255,.85);transition:.18s}
.svc-cover .play::after{content:"";position:absolute;border-style:solid;border-width:8px 0 8px 13px;
  border-color:transparent transparent transparent #fff;margin-left:3px}
.svc-cover:hover .play::before{background:var(--brand);transform:scale(1.08)}
.svc-tag{position:absolute;left:10px;top:10px;background:var(--brand);color:#fff;font-size:11.5px;
  font-weight:600;border-radius:6px;padding:2px 8px}
.svc-tag.soft{background:rgba(22,24,29,.55)}
.svc-body{padding:12px 14px 14px;display:flex;flex-direction:column;gap:6px;flex:1}
.svc-body h3{font-size:15px;margin:0}
.svc-acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:6px}
.svc-acts .btn{height:32px;font-size:12.5px;border-radius:8px}

/* 使用说明抽屉 */
.shmask{position:fixed;inset:0;background:rgba(10,14,22,.45);z-index:240}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:250;background:#fff;border-radius:18px 18px 0 0;
  max-height:84vh;display:flex;flex-direction:column;transform:translateY(100%);transition:transform .22s ease;
  box-shadow:0 -8px 40px rgba(10,20,40,.18)}
.sheet.on{transform:translateY(0)}
.shhd{padding:16px 18px 12px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;
  align-items:flex-start;gap:12px}
.shhd h3{margin:0;font-size:16.5px}
.shhd .sub{font-size:12.5px;color:var(--text3);margin-top:3px}
.shx{border:0;background:transparent;font-size:24px;line-height:1;color:var(--text3);cursor:pointer;padding:0 4px}
.shx:hover{color:var(--text)}
.shbd{padding:16px 18px calc(24px + env(safe-area-inset-bottom));overflow-y:auto;-webkit-overflow-scrolling:touch}
.shbd p{color:var(--text2);font-size:14px}
.sheet-manual .step{display:flex;gap:11px;padding-bottom:13px}
.sheet-manual .step .no{flex:none;width:22px;height:22px;border-radius:50%;background:var(--brand-soft);
  color:var(--brand-dark);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px}
.sheet-manual .step .tx{font-size:14px;line-height:1.65;color:var(--text)}
.sh-h4{margin:18px 0 8px;font-size:14.5px}
.sh-faq{list-style:none;margin:0;padding:0}
.sh-faq li{border-top:1px dashed var(--line)}
.sh-faq li:first-child{border-top:0}
.sh-faq a{display:block;padding:10px 0;color:var(--text2);font-size:13.5px}
.sh-faq a:hover{color:var(--brand)}
@media (min-width:701px){ .sheet{left:50%;right:auto;width:min(560px,92vw);transform:translate(-50%,100%);border-radius:18px} .sheet.on{transform:translate(-50%,0)} }

/* ---------- 应用场景 ---------- */
.scene-card{color:var(--text);padding:0;overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand-line)}
.scene-cover{margin:0;position:relative;background:var(--bg-alt)}
.scene-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.scene-cover .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.scene-cover .play::before{content:"";width:46px;height:46px;border-radius:50%;background:rgba(0,0,0,.4);
  border:2px solid rgba(255,255,255,.85)}
.scene-cover .play::after{content:"";position:absolute;border-style:solid;border-width:8px 0 8px 13px;
  border-color:transparent transparent transparent #fff;margin-left:3px}
.scene-card h2,.scene-card h3{font-size:16.5px;margin:0 0 4px}
.scene-card .sc-body{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.scene-card .sc-foot{display:flex;gap:8px;align-items:center;margin-top:auto;padding-top:10px}
.scene-detail{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;align-items:start}
.sd-desc{font-size:15px;color:var(--text2)}
.sd-desc .sec-title{font-size:20px}
.scene-video .video-wide{border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.scene-video .muted.center{text-align:center;margin-top:10px}
.form-card .fc-count{font-size:12px;color:var(--text3);font-weight:500;margin-left:8px}
.form-card h3{display:flex;align-items:baseline}
.form-card .p-more{display:block;margin-top:10px}
/* 形态卡 / 联系卡图标：小号精致化 */
.form-card .f-icon{width:34px;height:34px;border-radius:9px;margin-bottom:10px}
.form-card .f-icon svg{width:18px;height:18px}
.contact-card .f-icon{width:38px;height:38px;border-radius:10px;margin-bottom:10px}
.contact-card .f-icon svg{width:20px;height:20px}

/* ---------- 留言表单 ---------- */
.msg-form{display:flex;flex-direction:column;gap:16px;padding:26px}
.msg-form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.msg-form label{display:flex;flex-direction:column;gap:6px;font-size:13.5px;font-weight:600;color:var(--text2)}
.msg-form label b{color:var(--bad)}
.msg-form input,.msg-form textarea{border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  font-size:14.5px;font-family:inherit;color:var(--text);background:#fff;width:100%}
.msg-form input:focus,.msg-form textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,99,216,.1)}
.msg-form textarea{resize:vertical;min-height:110px}
.msg-form .btn{align-self:flex-start}
.form-note{font-size:12px;color:var(--text3);margin:0}
.hp-field{position:absolute;left:-9999px;height:0;width:0;opacity:0}
.flash{border-radius:12px;padding:13px 16px;font-size:14px;margin-bottom:18px}
.flash.ok{background:#E9F7F0;color:#0A7A45;border:1px solid #BFE7D4}
.flash.err{background:#FDF0EE;color:#B23A24;border:1px solid #F3C9C1}
.vm-tip{color:#fff;background:rgba(255,255,255,.08);border-radius:10px;padding:10px 14px;font-size:13px;margin:10px}

@media (max-width:700px){
  .msg-form .row{grid-template-columns:1fr}
  .scene-detail{grid-template-columns:1fr;gap:20px}
  .pick-bar{gap:10px}
  .pick-bar select{min-width:0;flex:1}
  .pick-bar label{flex:1;min-width:44%}
  .view-toggle{width:100%}
  .vt-btn{flex:1}
}

/* ===================== V3：整站科技感动画 ===================== */

/* 滚动入场（JS 加 .in；无 JS 时保持可见） */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal,.reveal.no-anim{opacity:1;transform:none}

/* 卡片 hover：上浮 + 品牌色描边光晕 */
.card{transition:transform .22s cubic-bezier(.2,.7,.3,1),box-shadow .22s,border-color .22s}
a.card:hover,.card.hov:hover{transform:translateY(-4px);
  box-shadow:0 2px 4px rgba(16,24,40,.05),0 14px 34px rgba(26,99,216,.14);
  border-color:var(--brand-line)}

/* 主按钮扫光 */
.btn-primary{position:relative;overflow:hidden}
.btn-primary::after{content:"";position:absolute;top:0;bottom:0;width:46%;left:-60%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.35),transparent);
  transform:skewX(-18deg);transition:left .5s ease}
.btn-primary:hover::after{left:120%}

/* 区块标题渐变下划线 */
.sec-title{position:relative;width:max-content;max-width:100%}
.sec-title::after{content:"";position:absolute;left:0;bottom:-7px;height:3px;width:38px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),#60A5FA);
  transition:width .45s cubic-bezier(.2,.7,.3,1)}
.sec-title.in::after,.reveal.in .sec-title::after{width:64px}

/* CTA 横幅流动渐变 */
.cta-band{background:linear-gradient(120deg,#1450B0,#1A63D8,#3B82F6,#1A63D8,#1450B0);
  background-size:280% 100%;animation:ctaFlow 12s ease-in-out infinite}
@keyframes ctaFlow{0%,100%{background-position:0% 0}50%{background-position:100% 0}}

/* 售后页头横幅同款流动 */
.svc-hero{background:linear-gradient(140deg,#1450B0,#1A63D8,#3B82F6,#1450B0);
  background-size:260% 100%;animation:ctaFlow 11s ease-in-out infinite}

/* 悬浮客服呼吸光圈 */
.float-kf{animation:kfPulse 2.6s ease-in-out infinite}
@keyframes kfPulse{0%,100%{box-shadow:0 6px 20px rgba(26,99,216,.35),0 0 0 0 rgba(26,99,216,.35)}
  55%{box-shadow:0 6px 20px rgba(26,99,216,.35),0 0 0 12px rgba(26,99,216,0)}}

/* 视频卡播放键呼吸 */
.video-thumb .play::before,.svc-cover .play::before{transition:.18s,box-shadow .3s}
.video-thumb:hover .play::before,.svc-cover:hover .play::before{
  box-shadow:0 0 0 8px rgba(26,99,216,.22),0 0 24px rgba(26,99,216,.5)}

/* FAQ 展开动效 */
.faq-item{transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:var(--brand-line);box-shadow:var(--shadow)}

@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1;transform:none}
  .cta-band,.svc-hero,.float-kf,.hero::after{animation:none}
}