/* ==========================================
   芯昌明科技 XCM - 企业官网样式表 v2
   设计: 科技蓝 + 专业可信 + 轻商务
   ========================================== */

:root {
    --p: #1565C0; --pd: #0D47A1; --pl: #42A5F5;
    --acc: #FF6D00; --ach: #E65100;
    --bg: #F5F7FA; --w: #FFFFFF;
    --td: #1A1A2E; --tm: #546E7A; --tl: #90A4AE;
    --b: #E0E0E0;
    --s1: 0 2px 8px rgba(0,0,0,.06); --s2: 0 4px 20px rgba(0,0,0,.10); --s3: 0 8px 40px rgba(0,0,0,.12);
    --r: 12px; --t: .3s cubic-bezier(.4,0,.2,1); --mw: 1200px;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; text-size-adjust:100%; }
body { font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif; color:var(--td); background:var(--w); line-height:1.7; font-size:16px; -webkit-font-smoothing:antialiased; }
a { text-decoration:none; color:inherit; } ul { list-style:none; } img { max-width:100%; display:block; }
.container { max-width:var(--mw); margin:0 auto; padding:0 24px; }

/* ===== 导航栏 ===== */
.navbar { position:fixed; top:0; left:0; right:0; z-index:1000; background:rgba(255,255,255,.95); backdrop-filter:blur(12px); border-bottom:1px solid transparent; transition:all var(--t); overflow:hidden; }
.navbar.scrolled { border-bottom-color:var(--b); box-shadow:var(--s1); }
.nav-inner { max-width:var(--mw); margin:0 auto; padding:0 24px; display:flex; justify-content:space-between; align-items:center; height:68px; }
.logo { display:flex; align-items:center; gap:10px; font-size:22px; font-weight:700; color:var(--p); }
.logo .logo-icon { width:auto; height:60px; border-radius:0; object-fit:contain; }
.nav-links { display:flex; align-items:center; gap:36px; }
.nav-links a { font-size:15px; color:var(--tm); font-weight:500; position:relative; transition:color var(--t); padding:4px 0; }
.nav-links a:hover, .nav-links a.active { color:var(--p); }
.nav-links a::after { content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px; background:var(--p); transition:width var(--t); }
.nav-links a:hover::after, .nav-links a.active::after { width:100%; }
.nav-cta { background:var(--acc)!important; color:#fff!important; padding:8px 22px!important; border-radius:6px!important; font-weight:600!important; }
.nav-cta:hover { background:var(--ach)!important; } .nav-cta::after { display:none!important; }

/* 汉堡菜单 */
.hamburger { display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none; padding:8px; }
.hamburger span { width:24px; height:2px; background:var(--td); border-radius:2px; transition:all var(--t); }
.hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* ===== Hero ===== */
.hero { padding:160px 24px 120px; background:#1565C0; position:relative; overflow:hidden; text-align:center; color:#fff; }
.hero-content { position:relative; z-index:1; max-width:800px; margin:0 auto; }
.hero-badge { display:inline-block; background:rgba(255,255,255,.18); border:1px solid rgba(255,255,255,.25); border-radius:50px; padding:6px 20px; font-size:14px; margin-bottom:28px; }
.hero h1 { font-size:52px; font-weight:800; line-height:1.25; margin-bottom:20px; }
.hero h1 span { background:linear-gradient(to right,#FFD54F,#FFB74D); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.hero p { font-size:18px; opacity:.88; max-width:600px; margin:0 auto 36px; line-height:1.8; }
.hero-btns { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

.btn { display:inline-flex; align-items:center; gap:8px; padding:14px 36px; border-radius:8px; font-size:16px; font-weight:600; cursor:pointer; border:none; transition:all var(--t); white-space:nowrap; }
.btn-primary { background:var(--acc); color:#fff; }
.btn-primary:hover { background:var(--ach); transform:translateY(-2px); box-shadow:0 6px 20px rgba(255,109,0,.35); }
.btn-outline { background:transparent; color:#fff; border:2px solid rgba(255,255,255,.5); }
.btn-outline:hover { background:rgba(255,255,255,.12); border-color:#fff; transform:translateY(-2px); }

/* ===== 信任条 ===== */
.trust-bar { background:var(--w); padding:32px 0; border-bottom:1px solid var(--b); }
.trust-inner { max-width:var(--mw); margin:0 auto; padding:0 24px; display:flex; justify-content:center; gap:64px; flex-wrap:wrap; }
.trust-item { text-align:center; }
.trust-item .num { font-size:36px; font-weight:800; color:var(--p); line-height:1.1; }
.trust-item .num span { font-size:20px; }
.trust-item .label { font-size:14px; color:var(--tm); margin-top:4px; }

/* ===== Section 通用 ===== */
.section { padding:100px 24px; }
.section-dark { background:var(--bg); }
.section-header { text-align:center; margin-bottom:60px; }
.section-label { display:inline-block; font-size:13px; font-weight:700; color:var(--p); text-transform:uppercase; letter-spacing:3px; margin-bottom:12px; }
.section-title { font-size:38px; font-weight:800; margin-bottom:16px; }
.section-subtitle { font-size:16px; color:var(--tm); max-width:560px; margin:0 auto; }

/* ===== 产品矩阵 ===== */
.product-matrix { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:24px; max-width:var(--mw); margin:0 auto; }
.matrix-card { background:var(--w); border:1px solid var(--b); border-radius:var(--r); padding:40px 28px; text-align:center; transition:all var(--t); cursor:pointer; }
.matrix-card:hover { transform:translateY(-6px); box-shadow:var(--s3); border-color:var(--pl); }
.matrix-icon { width:64px; height:64px; margin:0 auto 20px; background:linear-gradient(135deg,var(--bg),#E3F2FD); border-radius:16px; display:flex; align-items:center; justify-content:center; font-size:28px; }
.matrix-card h3 { font-size:18px; font-weight:700; margin-bottom:8px; }
.matrix-card p { font-size:14px; color:var(--tm); }
.matrix-img { width:100%; height:130px; margin-bottom:20px; border-radius:10px; overflow:hidden; }
.matrix-img svg { width:100%; height:100%; display:block; }

/* ===== 产品推荐 ===== */
.product-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(380px,1fr)); gap:24px; max-width:var(--mw); margin:0 auto; }
.product-card { background:var(--w); border:1px solid var(--b); border-radius:var(--r); overflow:hidden; transition:all var(--t); display:flex; flex-direction:column; }
.product-card:hover { box-shadow:var(--s2); transform:translateY(-4px); }
/* 顶部：左产品图 / 右引脚图 */
.product-top { display:flex; border-bottom:1px solid var(--b); }
.product-img, .product-pin { flex:1; min-width:0; height:200px; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.product-img { border-right:1px solid var(--b); background:#fff; padding:10px; }
.product-img img, .product-pin img { max-width:100%; max-height:100%; object-fit:contain; }
.product-img img.zoomable, .product-pin img.zoomable { cursor:zoom-in; }
.product-pin { background:linear-gradient(135deg,#F5F7FA,#EDF1F7); padding:8px; }
.product-img .ph-img { display:flex; flex-direction:column; align-items:center; gap:8px; color:#B0B8C4; }
.product-img .ph-icon { font-size:44px; line-height:1; }
.product-img .ph-text { font-size:13px; color:#C2C9D3; letter-spacing:1px; }
.product-body { padding:20px 24px 8px; flex:1; }
.product-body h3 { font-size:20px; font-weight:700; margin-bottom:6px; color:var(--p); }
.product-body .model { font-size:13px; color:var(--tl); font-family:"SF Mono","Consolas",monospace; margin-bottom:12px; }
.product-body .desc { font-size:13px; color:var(--tm); line-height:1.8; text-align:justify; }
.product-footer { padding:16px 24px; border-top:1px solid var(--b); display:flex; justify-content:space-between; align-items:center; gap:12px; }
.btn-sm { font-size:13px; font-weight:600; color:var(--p); padding:6px 16px; border:1px solid var(--p); border-radius:6px; background:none; cursor:pointer; transition:all var(--t); text-decoration:none; }
.btn-sm:hover { background:var(--p); color:#fff; }

/* ===== 解决方案 ===== */
.solutions-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(340px,1fr)); gap:28px; max-width:var(--mw); margin:0 auto; }
.solution-card { background:var(--w); border-radius:var(--r); overflow:hidden; border:1px solid var(--b); transition:all var(--t); }
.solution-card:hover { box-shadow:var(--s3); transform:translateY(-4px); }
.solution-banner { height:200px; display:flex; align-items:center; justify-content:center; font-size:64px; }
.solution-banner .solution-svg { width:100%; height:100%; display:block; }
.solution-banner.audio { background:linear-gradient(135deg,#E8EAF6,#C5CAE9); }
.solution-banner.smart { background:linear-gradient(135deg,#E0F2F1,#B2DFDB); }
.solution-banner.power { background:linear-gradient(135deg,#FFF3E0,#FFE0B2); }
.solution-body { padding:28px; }
.solution-body h3 { font-size:20px; font-weight:700; margin-bottom:10px; }
.solution-body p { font-size:14px; color:var(--tm); margin-bottom:16px; }
.solution-tags { display:flex; flex-wrap:wrap; gap:8px; }
.solution-tags span { font-size:12px; padding:4px 12px; background:var(--bg); border-radius:20px; color:var(--p); font-weight:500; }

/* ===== 关于我们 ===== */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; max-width:var(--mw); margin:0 auto; }
.about-text h2 { font-size:34px; font-weight:800; margin-bottom:24px; }
.about-text p { font-size:16px; color:var(--tm); line-height:1.9; margin-bottom:16px; }
.about-stats { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:28px; }
.stat-item { padding:16px; background:var(--bg); border-radius:8px; border-left:3px solid var(--p); }
.stat-num { font-size:28px; font-weight:800; color:var(--p); }
.stat-label { font-size:13px; color:var(--tm); }
.about-visual { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.vis-card { border-radius:var(--r); padding:32px; color:#fff; text-align:center; }
.vis-card:nth-child(1) { background:linear-gradient(135deg,var(--p),var(--pd)); }
.vis-card:nth-child(2) { background:linear-gradient(135deg,#FFB74D,var(--acc)); }
.vis-card:nth-child(3) { background:linear-gradient(135deg,#26A69A,#00897B); grid-column:span 2; }
.vis-card .vis-icon { font-size:36px; margin-bottom:12px; }
.vis-card h4 { font-size:16px; font-weight:600; margin-bottom:4px; }
.vis-card p { font-size:13px; opacity:.85; }

/* ===== 合作伙伴 ===== */
.partner-slogan { text-align:center; max-width:900px; margin:0 auto; padding:40px 24px; }
.partner-slogan p { font-size:22px; color:var(--td); line-height:1.9; font-weight:500; margin:0 0 12px; }
.partner-slogan p:last-child { margin-bottom:0; }

/* ===== CTA ===== */
.cta-section { background:linear-gradient(135deg,var(--pd),var(--p)); padding:80px 24px; text-align:center; color:#fff; }
.cta-section h2 { font-size:36px; font-weight:800; margin-bottom:16px; }
.cta-section p { font-size:17px; opacity:.88; margin-bottom:32px; }
.cta-section .btn-primary { background:var(--acc); color:#fff; }
.cta-section .btn-primary:hover { background:var(--ach); box-shadow:0 6px 20px rgba(255,109,0,.35); }

/* ===== 页脚 ===== */
.footer { background:#0D47A1; color:#B0BEC5; padding:64px 24px 36px; }
.footer-grid { max-width:var(--mw); margin:0 auto 40px; display:grid; grid-template-columns:2fr 1fr 1fr 1.2fr; gap:40px; }
.footer-col h4 { font-size:16px; font-weight:700; color:#fff; margin-bottom:20px; }
.footer-col p, .footer-col a { font-size:14px; color:#78909C; line-height:2; display:block; transition:color var(--t); }
.footer-col a:hover { color:#fff; }
.footer-brand p { font-size:14px; color:#78909C; line-height:1.8; }
.footer-bottom { max-width:var(--mw); margin:0 auto; padding-top:24px; border-top:1px solid rgba(255,255,255,.08); display:flex; justify-content:space-between; align-items:center; font-size:13px; color:#607D8B; flex-wrap:wrap; gap:12px; }

/* ===== 子页面 Banner ===== */
.page-banner { padding:120px 24px 60px; background:#1565C0; text-align:center; color:#fff; }
.page-banner h1 { font-size:42px; font-weight:800; margin-bottom:12px; }
.page-banner p { font-size:17px; opacity:.82; }

/* ===== 产品筛选 ===== */
.filter-bar { max-width:var(--mw); margin:0 auto 32px; padding:0 24px; display:flex; gap:12px; flex-wrap:wrap; justify-content:center; }
.filter-btn { padding:8px 24px; border:1px solid var(--b); border-radius:50px; background:var(--w); color:var(--tm); font-size:14px; font-weight:500; cursor:pointer; transition:all var(--t); }
.filter-btn:hover, .filter-btn.active { background:var(--p); border-color:var(--p); color:#fff; }

/* ===== 联系方式卡片 ===== */
.contact-info-card { padding:32px; background:var(--bg); border-radius:var(--r); margin-bottom:24px; }
.contact-info-card h3 { font-size:20px; margin-bottom:20px; }
.contact-row { display:flex; align-items:flex-start; gap:12px; margin-bottom:18px; padding-bottom:18px; border-bottom:1px solid var(--b); }
.contact-row:last-of-type { margin-bottom:0; padding-bottom:0; border-bottom:none; }
.contact-icon { font-size:20px; flex-shrink:0; margin-top:2px; }
.contact-row strong { display:block; font-size:14px; color:var(--td); margin-bottom:2px; }
.contact-row p { font-size:14px; color:var(--tm); }
.contact-link { color:var(--p); font-weight:500; font-size:14px; }
.contact-link:hover { text-decoration:underline; }

/* 地址行 */
.contact-addr { display:flex; gap:12px; flex:1; }

/* 联系方式网格：地图与文字左右分栏 */
.contact-info-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; align-items:start; }
.contact-info-grid .map-container { height:100%; min-height:280px; margin-bottom:0; }
.contact-info-list { display:flex; flex-direction:column; gap:16px; }
.contact-info-list .contact-row { margin-bottom:0; padding-bottom:16px; }

/* ===== 地图容器 ===== */
.map-container { border-radius:10px; overflow:hidden; border:1px solid var(--b); height:300px; margin-bottom:24px; background:#e8e8e8; position:relative; }
.map-container .leaflet-container { width:100%; height:100%; }
.map-pin-label { position:absolute; bottom:16px; left:50%; transform:translateX(-50%); background:rgba(0,0,0,.75); color:#fff; padding:6px 16px; border-radius:20px; font-size:12px; pointer-events:none; z-index:999; white-space:nowrap; }

/* ===== 即时通讯聊天面板 ===== */
.chat-panel { border:1px solid var(--b); border-radius:var(--r); overflow:hidden; background:var(--w); }
.chat-panel-header { padding:16px 20px; background:linear-gradient(135deg,#3370FF,#2861E6); color:#fff; display:flex; align-items:center; gap:10px; font-size:15px; font-weight:600; }
.chat-visitor-label { margin-left:auto; font-size:11px; font-weight:400; opacity:.85; font-family:"SF Mono","Consolas",monospace; }
.chat-panel-header .chat-status { width:8px; height:8px; background:#76FF03; border-radius:50%; animation:pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.chat-panel-body { padding:16px; max-height:320px; overflow-y:auto; background:#F8FAFC; min-height:140px; }
.chat-panel-body .chat-welcome { text-align:center; padding:20px 0; }
.chat-panel-body .chat-welcome .bot-avatar { width:48px; height:48px; background:linear-gradient(135deg,#3370FF,#2861E6); border-radius:50%; display:inline-flex; align-items:center; justify-content:center; font-size:20px; margin-bottom:10px; color:#fff; }
.chat-panel-body .chat-welcome p { font-size:14px; color:var(--tm); line-height:1.7; }
.chat-refresh-notice { padding:8px 14px; margin:0 12px 4px; background:#FFF3E0; border:1px solid #FFCC80; border-radius:8px; font-size:12px; color:#E65100; line-height:1.6; text-align:center; }
.chat-msg { margin-bottom:14px; display:flex; gap:10px; animation:msgIn .3s ease; }
@keyframes msgIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
.chat-msg .msg-avatar { width:34px; height:34px; border-radius:50%; flex-shrink:0; display:flex; align-items:center; justify-content:center; font-size:15px; color:#fff; }
.chat-msg .msg-avatar.bot { background:linear-gradient(135deg,#3370FF,#2861E6); }
.chat-msg .msg-avatar.user { background:linear-gradient(135deg,#FF9800,#F57C00); }
.chat-msg .msg-bubble { width:100%; padding:10px 14px; border-radius:14px; font-size:14px; line-height:1.6; word-break:break-word; overflow-wrap:break-word; }
.chat-msg.bot-msg .msg-bubble { background:#E8F0FE; color:var(--td); border-top-left-radius:4px; }
.chat-msg.user-msg .msg-bubble { background:#E8F5E9; color:var(--td); border-top-right-radius:4px; margin-left:auto; }
.chat-msg .msg-name { font-size:11px; color:var(--tl); margin-bottom:2px; }
.chat-msg .msg-time { font-size:10px; color:var(--tl); margin-top:4px; text-align:right; }
.chat-panel-footer { padding:12px 16px; border-top:1px solid var(--b); background:var(--w); }
.chat-panel-footer .chat-input-row { display:flex; gap:8px; align-items:flex-end; }
.chat-panel-footer textarea { flex:1; padding:10px 14px; border:1px solid var(--b); border-radius:8px; font-size:14px; font-family:inherit; resize:none; height:44px; line-height:1.5; }
.chat-panel-footer textarea:focus { outline:none; border-color:var(--p); box-shadow:0 0 0 3px rgba(21,101,192,.08); }
.chat-send-btn { padding:10px 24px; background:linear-gradient(135deg,#3370FF,#2861E6); color:#fff; border:none; border-radius:8px; font-size:14px; font-weight:600; cursor:pointer; transition:all var(--t); white-space:nowrap; flex-shrink:0; }
.chat-send-btn:hover { box-shadow:0 4px 14px rgba(51,112,255,.35); }
.chat-send-btn:disabled { opacity:.6; cursor:not-allowed; }

/* ===== 询价表单 ===== */
.inquiry-form { max-width:600px; margin:0 auto; }
.form-group { margin-bottom:20px; }
.form-group label { display:block; font-size:14px; font-weight:600; margin-bottom:6px; }
.form-group input, .form-group textarea, .form-group select { width:100%; padding:12px 16px; border:1px solid var(--b); border-radius:8px; font-size:15px; font-family:inherit; transition:border-color var(--t); background:var(--w); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline:none; border-color:var(--p); box-shadow:0 0 0 3px rgba(21,101,192,.1); }
.form-group textarea { resize:vertical; min-height:120px; }

/* ===== 弹窗 ===== */
.modal-overlay { display:none; position:fixed; top:0;left:0;right:0;bottom:0; background:rgba(0,0,0,.5); z-index:2000; align-items:center; justify-content:center; padding:24px; }
.modal-overlay.active { display:flex; }
.modal-box { background:var(--w); border-radius:var(--r); max-width:640px; width:100%; padding:40px; position:relative; box-shadow:var(--s3); max-height:85vh; overflow-y:auto; }
.modal-close { position:absolute; top:16px; right:16px; width:32px; height:32px; border-radius:50%; border:none; background:var(--bg); cursor:pointer; font-size:18px; color:var(--tm); display:flex; align-items:center; justify-content:center; }
.modal-close:hover { background:#e0e0e0; }
.modal-img { width:100%; height:220px; background:linear-gradient(135deg,#E3F2FD,#BBDEFB); border-radius:var(--r); display:flex; align-items:center; justify-content:center; font-size:64px; margin-bottom:24px; }
.modal-box h2 { font-size:24px; font-weight:700; margin-bottom:8px; }
.modal-model { font-size:14px; color:var(--tl); font-family:"SF Mono","Consolas",monospace; margin-bottom:20px; }
.spec-list { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-bottom:24px; }
.spec-list div { padding:10px 14px; background:var(--bg); border-radius:6px; font-size:13px; }
.spec-list div strong { display:block; color:var(--td); margin-bottom:2px; }
.modal-box .btn-primary { width:100%; justify-content:center; }

/* ===== 图片放大灯箱 ===== */
.lightbox { display:none; position:fixed; top:0;left:0;right:0;bottom:0; background:rgba(0,0,0,.88); z-index:5000; align-items:center; justify-content:center; }
.lightbox.active { display:flex; }
.lightbox-img { max-width:88vw; max-height:84vh; object-fit:contain; transform-origin:center; transition:transform .15s ease; cursor:zoom-out; }
.lightbox-toolbar { position:fixed; top:18px; right:18px; display:flex; align-items:center; gap:8px; z-index:5001; }
.lb-btn { width:38px; height:38px; border-radius:8px; border:none; background:rgba(255,255,255,.15); color:#fff; font-size:18px; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:background .2s; }
.lb-btn:hover { background:rgba(255,255,255,.3); }
.lb-close { font-size:16px; }
.lb-scale { color:#fff; font-size:14px; font-family:"SF Mono","Consolas",monospace; background:rgba(255,255,255,.15); padding:6px 10px; border-radius:8px; }

/* ===== Toast ===== */
.toast { position:fixed; top:24px; left:50%; transform:translateX(-50%); background:#263238; color:#fff; padding:14px 28px; border-radius:8px; font-size:14px; z-index:3000; opacity:0; transition:opacity .3s; pointer-events:none; }
.toast.show { opacity:1; }

/* ===== 页内滚动动画 ===== */
.fade-in { opacity:0; transform:translateY(30px); transition:opacity .6s,transform .6s; }
.fade-in.visible { opacity:1; transform:translateY(0); }
.product-card,.solution-card,.sector-card,.case-card,.stat-card,.app-card { opacity:0; transform:translateY(30px); transition:opacity .6s,transform .6s; }
.product-card.visible,.solution-card.visible,.sector-card.visible,.case-card.visible,.stat-card.visible,.app-card.visible { opacity:1; transform:translateY(0); }

/* ===== 响应式 ===== */
@media (max-width:1024px) {
    .footer-grid { grid-template-columns:1fr 1fr; }
    .about-grid { grid-template-columns:1fr; gap:40px; }
    .about-visual { order:-1; }
}
@media (max-width:768px) {
    /* 修复：navbar 的 overflow:hidden + backdrop-filter 会裁剪/偏移 fixed 下拉菜单 */
    .navbar { overflow:visible; }
    .nav-links { position:absolute; top:68px; left:0; right:0; background:var(--w); flex-direction:column; gap:0; padding:0 0 12px; max-height:0; overflow:hidden; transition:max-height .3s; box-shadow:var(--s2); }
    .nav-links.open { max-height:calc(100dvh - 68px); overflow-y:auto; -webkit-overflow-scrolling:touch; }
    .nav-links a { padding:14px 24px; border-bottom:1px solid var(--b); width:100%; }
    .nav-links a::after { display:none; }
    .nav-cta { text-align:center; margin:12px 24px; border-radius:8px; }
    .hamburger { display:flex; min-width:44px; min-height:44px; justify-content:center; align-items:center; }
    .logo { font-size:18px; gap:8px; }
    .logo .logo-icon { height:44px; }
    /* iOS 聚焦输入框时避免自动放大页面（font-size 需 ≥16px） */
    .form-group input, .form-group select, .chat-panel-footer textarea { font-size:16px; }
    .hero h1 { font-size:32px; }
    .hero { padding:120px 24px 80px; }
    .page-banner { padding:110px 24px 48px; }
    .page-banner h1 { font-size:32px; }
    .page-banner p { font-size:16px; }
    .section { padding:60px 24px; }
    .section-title { font-size:28px; }
    .about-text h2 { font-size:30px; }
    .cta-section { padding:64px 24px; }
    .product-grid { grid-template-columns:1fr; }
    .solutions-grid { grid-template-columns:1fr; }
    .trust-inner { gap:32px; }
    .footer-grid { grid-template-columns:1fr; gap:32px; }
    .product-matrix { grid-template-columns:repeat(2,1fr); }
    .product-top { flex-direction:column; }
    .product-img, .product-pin { height:180px; }
    .product-img { border-right:none; border-bottom:1px solid var(--b); }
}
@media (max-width:480px) {
    .hero { padding:104px 20px 64px; }
    .page-banner { padding:100px 20px 40px; }
    .section { padding:48px 20px; }
    .cta-section { padding:52px 20px; }
    .container, .nav-inner, .filter-bar, .trust-inner { padding-left:20px; padding-right:20px; }
    .hero h1 { font-size:28px; margin-bottom:14px; }
    .hero p { font-size:16px; margin-bottom:28px; }
    .hero-badge { font-size:13px; padding:5px 16px; margin-bottom:20px; }
    .page-banner h1 { font-size:26px; }
    .page-banner p { font-size:15px; }
    .section-header { margin-bottom:32px; }
    .section-title { font-size:24px; }
    .section-subtitle { font-size:15px; }
    .trust-bar { padding:24px 0; }
    .trust-inner { gap:20px; }
    .trust-item .num { font-size:28px; }
    .trust-item .num span { font-size:16px; }
    .about-text h2 { font-size:24px; margin-bottom:14px; }
    .about-text p { font-size:15px; }
    .stat-num { font-size:24px; }
    .vis-card { padding:24px 16px; }
    .partner-slogan { padding:32px 20px; }
    .partner-slogan p { font-size:17px; }
    .cta-section h2 { font-size:26px; margin-bottom:12px; }
    .cta-section p { font-size:15px; margin-bottom:24px; }
    .footer { padding:48px 20px 24px; }
    .footer-bottom { padding-bottom:calc(20px + env(safe-area-inset-bottom)); }
    .contact-info-card { padding:20px; }
    .modal-overlay { padding:12px; }
    .modal-box { padding:24px; }
    .modal-img { height:150px; margin-bottom:16px; }
    .filter-btn { padding:11px 20px; }
    .product-body { padding:16px 16px 4px; }
    .product-footer { padding:14px 16px; }
    .product-footer .btn-sm { padding:12px 16px; font-size:14px; }
    .matrix-card { padding:28px 20px; }
    .solution-body { padding:20px; }
    .solution-banner { height:160px; }
    .spec-list div { padding:10px 12px; }
    .toast { padding:12px 20px; width:88%; max-width:340px; text-align:center; }
    .product-matrix { grid-template-columns:1fr; }
    .hero-btns { flex-direction:column; align-items:center; }
    .product-footer { flex-direction:column; align-items:stretch; }
    .product-footer .btn-sm { text-align:center; }
    .spec-list { grid-template-columns:1fr; }
    .contact-addr { flex-direction:column; }
    .contact-info-grid { grid-template-columns:1fr; }
    .map-container { height:220px; }
    .chat-panel-body { max-height:240px; }
    .chat-msg .msg-bubble { width:100%; }
}