/* ===== 苏州艾特光电 weijiagong.com 全局样式 ===== */
:root {
  --navy: #0a1628; --blue: #1565c0; --blue-bright: #1e88e5; --blue-glow: #64b5f6;
  --blue-ghost: #e8f1fb; --blue-pale: #d4e6fa;
  --white: #fff; --gray-50: #f8f9fb; --gray-100: #eef1f5; --gray-200: #dde2e8;
  --gray-400: #8b95a5; --gray-600: #5a6476; --gray-800: #242e3e;
  --radius-sm: 6px; --radius-md: 10px; --radius-lg: 16px; --radius-xl: 24px;
  --shadow-sm: 0 1px 2px rgba(10,22,40,.06); --shadow-md: 0 4px 20px rgba(10,22,40,.08);
  --shadow-lg: 0 12px 40px rgba(10,22,40,.12);
  --max-w: 1200px; --t: 240ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;color:var(--gray-800);background:var(--white);scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{min-height:100vh}a{color:inherit;text-decoration:none}ul{list-style:none}img{max-width:100%;display:block}
.container{max-width:var(--max-w);margin:0 auto;padding:0 28px}

/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;border-bottom:1px solid var(--gray-100);transition:box-shadow var(--t)}
.nav.scrolled{box-shadow:var(--shadow-md)}
.nav-top{display:flex;align-items:center;justify-content:flex-start;height:46px;padding:0 28px;border-bottom:1px solid var(--gray-50);background:var(--navy)}
.nav-brand{font-size:.95rem;font-weight:700;color:#fff;text-decoration:none;letter-spacing:.04em}
.nav-brand small{font-weight:400;color:rgba(255,255,255,.45);margin-left:8px;font-size:.78rem}
.nav-bar{background:#fff;border-bottom:1px solid var(--gray-100)}
.nav-bar-inner{display:flex;align-items:center;justify-content:center;max-width:100%;padding:0 20px;height:56px}
.nav-links{display:flex;gap:0;align-items:center;height:100%;flex:0 1 auto;justify-content:center}
.nav-links>li{position:relative;height:100%;display:flex;align-items:center}
.nav-links>li>a,.nav-links>li>.nav-label{padding:0 22px;height:100%;display:flex;align-items:center;font-size:.95rem;font-weight:600;color:var(--gray-800);cursor:pointer;transition:all var(--t);white-space:nowrap;gap:4px;position:relative;text-decoration:none}
.nav-links>li>a::after,.nav-links>li>.nav-label::after{content:'';position:absolute;bottom:0;left:22px;right:22px;height:3px;background:var(--blue);border-radius:2px;transform:scaleX(0);transition:transform var(--t)}
.nav-links>li:hover>a::after,.nav-links>li:hover>.nav-label::after,
.nav-links>li>a.active::after{transform:scaleX(1)}
.nav-links>li:hover>a,.nav-links>li:hover>.nav-label,.nav-links>li>a.active{color:var(--blue)}
.nav-arrow{font-size:.6rem;margin-left:2px;transition:transform var(--t)}
li:hover>.nav-label .nav-arrow{transform:rotate(180deg)}
.nav-dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);min-width:200px;background:#fff;border-radius:var(--radius-md);box-shadow:0 16px 48px rgba(10,22,40,.16);border:1px solid var(--gray-100);padding:8px;opacity:0;visibility:hidden;transition:all var(--t);z-index:200;pointer-events:none}
.nav-links>li:hover>.nav-dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.nav-dropdown a{display:flex;align-items:center;gap:8px;padding:11px 16px;font-size:.88rem;font-weight:500;color:var(--gray-600);border-radius:6px;transition:all var(--t);white-space:nowrap;text-decoration:none}
.nav-dropdown a:hover{background:var(--blue-ghost);color:var(--blue)}
.nav-dropdown .dd-icon{font-size:.9rem;width:20px;text-align:center;flex-shrink:0}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:none;background:none;cursor:pointer;z-index:110;border-radius:8px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--navy);position:relative;transition:background var(--t)}
.nav-toggle span::before,.nav-toggle span::after{content:'';position:absolute;left:0;width:20px;height:2px;background:var(--navy);transition:transform var(--t)}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{top:0;transform:rotate(45deg)}.nav-toggle.open span::after{top:0;transform:rotate(-45deg)}
@media(max-width:900px){
  .nav-top{height:40px}.nav-brand{font-size:.82rem}
  .nav-bar-inner{height:50px;padding:0 12px}
  .nav-links{position:fixed;inset:0;top:102px;flex-direction:column;align-items:stretch;gap:0;background:var(--white);padding:8px 16px;transform:translateX(100%);transition:transform var(--t);overflow-y:auto;z-index:99}
  .nav-links.open{transform:translateX(0)}
  .nav-links>li{height:auto;display:block;border-bottom:1px solid var(--gray-50)}
  .nav-links>li>a,.nav-links>li>.nav-label{padding:14px 8px;font-size:.95rem;height:auto;justify-content:space-between}
  .nav-links>li>a::after,.nav-links>li>.nav-label::after{display:none}
  .nav-dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:none;border-radius:0;padding:0 0 12px 12px;display:none;pointer-events:auto}
  .nav-links>li.open>.nav-dropdown{display:block}
  .nav-links>li:hover>.nav-dropdown{display:block}
  .nav-toggle{display:flex}
}

/* ===== 区块通用 ===== */
.sec{padding:88px 0}.sec-alt{background:var(--gray-50)}
.sec-hdr{text-align:center;margin-bottom:52px}
.sec-lbl{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:12px}
.sec-ttl{font-size:2rem;font-weight:800;color:var(--navy);line-height:1.2;margin-bottom:14px}
.sec-dsc{font-size:.98rem;color:var(--gray-600);max-width:720px;margin:0 auto;line-height:1.7}

/* 内页顶部横幅 */
.page-hero{background:var(--navy);padding:150px 0 72px;text-align:center;position:relative;overflow:hidden}
.page-hero .grid{position:absolute;inset:0;opacity:.06;background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);background-size:64px 64px}
.page-hero .glow{position:absolute;top:-30%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(100,181,246,.16) 0%,transparent 70%)}
.page-hero .cnt{position:relative;z-index:1}
.page-hero h1{color:#fff;font-size:2.2rem;font-weight:900;margin-bottom:12px}
.page-hero p{color:rgba(255,255,255,.55);font-size:.98rem;max-width:680px;margin:0 auto;line-height:1.7}
.crumb{display:inline-block;margin-bottom:16px;font-size:.72rem;color:rgba(255,255,255,.4);letter-spacing:.08em}

/* 首页 HERO */
.hero{position:relative;min-height:calc(100vh - 102px);display:flex;align-items:center;justify-content:center;text-align:center;background:var(--navy);overflow:hidden;margin-top:102px}
.hero-bg .grid{position:absolute;inset:0;opacity:.06;background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);background-size:64px 64px}
.hero-bg .glow1{position:absolute;top:-20%;left:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(100,181,246,.18) 0%,transparent 70%)}
.hero-bg .glow2{position:absolute;bottom:-20%;right:-10%;width:500px;height:500px;background:radial-gradient(circle,rgba(30,136,229,.12) 0%,transparent 70%)}
.hero-content{position:relative;z-index:1;padding:60px 28px;max-width:900px}
.hero-badge{display:inline-block;padding:6px 18px;border:1px solid rgba(255,255,255,.18);border-radius:50px;color:rgba(255,255,255,.65);font-size:.72rem;font-weight:500;letter-spacing:.08em;margin-bottom:24px}
.hero-content h1{font-size:clamp(1.9rem,5vw,3.2rem);font-weight:900;color:var(--white);line-height:1.15;margin-bottom:16px;letter-spacing:-.03em}
.hero-content h1 em{font-style:normal;color:var(--blue-glow)}
.hero-content .sub{font-size:1rem;color:rgba(255,255,255,.55);line-height:1.7;margin-bottom:28px}
.hero-tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:36px}
.hero-tags span{padding:5px 14px;border:1px solid rgba(255,255,255,.13);border-radius:50px;font-size:.7rem;color:rgba(255,255,255,.5);letter-spacing:.04em}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:10px;font-weight:600;font-size:.88rem;transition:all var(--t);cursor:pointer;border:none;min-height:48px}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 4px 16px rgba(21,101,192,.35)}.btn-primary:hover{background:var(--blue-bright);transform:translateY(-1px);box-shadow:0 6px 24px rgba(21,101,192,.5)}
.btn-outline{border:1.5px solid rgba(255,255,255,.22);color:#fff;background:transparent}.btn-outline:hover{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.4)}
.btn-dark{background:var(--navy);color:#fff}.btn-dark:hover{background:#15263f}
.hero-stats{display:flex;gap:0;justify-content:center;flex-wrap:wrap}
.hero-stat{text-align:center;padding:0 24px;border-right:1px solid rgba(255,255,255,.08)}
.hero-stat:last-child{border-right:none}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--blue-glow);line-height:1.1}
.hero-stat .lbl{font-size:.7rem;color:rgba(255,255,255,.35);margin-top:4px;letter-spacing:.04em}
@media(max-width:640px){.hero-stat{padding:10px 14px;border-right:none;border-bottom:1px solid rgba(255,255,255,.06)}.hero-stat:last-child{border-bottom:none}}

/* 产品卡片 */
.prd-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.prd-card{background:var(--white);border-radius:var(--radius-lg);padding:36px 28px;border:1px solid var(--gray-100);transition:all var(--t);position:relative;overflow:hidden}
.prd-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--blue-bright));opacity:0;transition:opacity var(--t)}
.prd-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}.prd-card:hover::before{opacity:1}
.prd-card h3{font-size:1.15rem;font-weight:700;color:var(--navy);margin-bottom:8px}
.prd-card>.desc{font-size:.88rem;color:var(--gray-600);line-height:1.7;margin-bottom:16px}
.prd-subs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.prd-sub{padding:10px 12px;background:var(--gray-50);border-radius:8px;font-size:.78rem;line-height:1.5}
.prd-sub strong{display:block;color:var(--navy);margin-bottom:2px;font-size:.8rem}
.prd-sub span{color:var(--gray-600);font-size:.72rem}
.prd-card.has3 .prd-subs{grid-template-columns:repeat(3,1fr)}
@media(max-width:768px){.prd-grid{grid-template-columns:1fr}.prd-subs{grid-template-columns:1fr}}

/* 品类矩阵 */
.mtx{background:var(--navy);border-radius:var(--radius-xl);padding:48px 40px;margin-top:56px}
.mtx h3{color:#fff;font-size:1.5rem;font-weight:800;margin-bottom:8px;text-align:center}
.mtx .mtx-sub{color:rgba(255,255,255,.5);font-size:.85rem;text-align:center;margin-bottom:36px}
.mtx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.mtx-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:22px 20px;transition:all var(--t)}
.mtx-card:hover{background:rgba(255,255,255,.09);border-color:rgba(100,181,246,.4)}
.mtx-card h4{color:var(--blue-glow);font-size:.98rem;font-weight:700;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid rgba(255,255,255,.08)}
.mtx-card ul{display:flex;flex-direction:column;gap:5px}
.mtx-card li{color:rgba(255,255,255,.62);font-size:.76rem;line-height:1.5;padding-left:12px;position:relative}
.mtx-card li::before{content:'·';position:absolute;left:0;color:var(--blue-glow)}
.mtx-card .mat{margin-top:10px;padding-top:8px;border-top:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.35);font-size:.68rem}
@media(max-width:1024px){.mtx-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.mtx-grid{grid-template-columns:1fr}.mtx{padding:36px 20px}}

/* 优势 */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.adv-card{background:var(--white);border-radius:var(--radius-md);padding:24px 18px;border:1px solid var(--gray-100);text-align:center;transition:all var(--t)}
.adv-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--blue-pale)}
.adv-card .n{display:inline-block;width:34px;height:34px;line-height:34px;background:var(--blue);color:#fff;border-radius:50%;font-weight:800;font-size:.8rem;margin-bottom:10px}
.adv-card h4{font-size:.88rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.adv-card p{font-size:.76rem;color:var(--gray-600);line-height:1.5}
@media(max-width:1024px){.adv-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.adv-grid{grid-template-columns:1fr}}

/* 工艺 tabs */
.cap-tabs{display:flex;justify-content:center;gap:10px;margin-bottom:40px;flex-wrap:wrap}
.cap-tab{padding:10px 22px;border-radius:50px;font-size:.82rem;font-weight:600;color:var(--gray-600);border:1.5px solid var(--gray-200);background:var(--white);cursor:pointer;transition:all var(--t)}
.cap-tab:hover{border-color:var(--blue-pale);color:var(--blue)}
.cap-tab.active{background:var(--blue);color:#fff;border-color:var(--blue);box-shadow:0 4px 16px rgba(21,101,192,.3)}
.cap-panel{display:none}.cap-panel.active{display:block;animation:fadeUp .4s ease}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.cap-item{background:var(--white);border-radius:var(--radius-md);padding:20px 14px;border:1px solid var(--gray-100);text-align:center;transition:all var(--t)}
.cap-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--blue-pale)}
.cap-item h4{font-size:.85rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.cap-item .sub{font-size:.72rem;color:var(--gray-400);line-height:1.6}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1024px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.cap-grid{grid-template-columns:1fr}}

/* 设备 */
.eqp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.eqp-card{background:var(--white);border-radius:var(--radius-md);padding:24px 20px;border:1px solid var(--gray-100);transition:all var(--t)}
.eqp-card:hover{box-shadow:var(--shadow-md);border-color:var(--blue-pale)}
.eqp-card h4{font-size:.95rem;font-weight:700;color:var(--navy);margin-bottom:10px;padding-bottom:10px;border-bottom:2px solid var(--blue-ghost)}
.eqp-card ul{display:flex;flex-direction:column;gap:6px}
.eqp-card li{font-size:.8rem;color:var(--gray-600);line-height:1.5;padding-left:12px;position:relative}
.eqp-card li::before{content:'•';position:absolute;left:0;color:var(--blue)}
.eqp-card .note{display:block;margin-top:10px;padding-top:8px;border-top:1px solid var(--gray-100);font-size:.72rem;color:var(--gray-400);font-weight:600}
@media(max-width:768px){.eqp-grid{grid-template-columns:1fr}}

/* 图集 */
.gal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gal-item{border-radius:var(--radius-md);overflow:hidden;background:var(--white);border:1px solid var(--gray-100);transition:all var(--t)}
.gal-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.gal-item img{width:100%;aspect-ratio:4/3;object-fit:cover}
.gal-item figcaption{padding:10px 12px;font-size:.72rem;color:var(--gray-600);line-height:1.5;background:var(--white)}
.gal-item figcaption strong{display:block;color:var(--navy);font-size:.78rem;margin-bottom:2px}
@media(max-width:1024px){.gal-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.gal-grid{grid-template-columns:1fr}}

/* 流程 */
.flw{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:20px}
.flw-card{text-align:center;padding:24px 12px;background:var(--white);border-radius:var(--radius-md);border:1px solid var(--gray-100);transition:all var(--t)}
.flw-card:hover{box-shadow:var(--shadow-md);border-color:var(--blue-pale)}
.flw-card .step{display:inline-block;width:36px;height:36px;line-height:36px;background:var(--blue);color:#fff;border-radius:50%;font-weight:800;font-size:.85rem;margin-bottom:10px}
.flw-card h4{font-size:.82rem;font-weight:700;color:var(--navy);margin-bottom:4px}
.flw-card p{font-size:.72rem;color:var(--gray-600);line-height:1.4}
@media(max-width:1024px){.flw{grid-template-columns:repeat(3,1fr)}}
@media(max-width:480px){.flw{grid-template-columns:1fr}}

/* 应用 */
.app-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.app-card{text-align:center;padding:28px 16px;background:var(--white);border-radius:var(--radius-md);border:1px solid var(--gray-100);transition:all var(--t)}
.app-card:hover{box-shadow:var(--shadow-md);border-color:var(--blue-pale)}
.app-card .icon{font-size:2rem;margin-bottom:8px}
.app-card h4{font-size:.88rem;font-weight:700;color:var(--navy);margin-bottom:6px}
.app-card p{font-size:.74rem;color:var(--gray-600);line-height:1.5}
@media(max-width:1024px){.app-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.app-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:360px){.app-grid{grid-template-columns:1fr}}

/* 关于 */
.abt-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.abt-vsl{border-radius:var(--radius-xl);overflow:hidden;position:relative;background:var(--navy);aspect-ratio:4/3}
.abt-vsl img{width:100%;height:100%;object-fit:cover;opacity:.92}
.abt-vsl .capt{position:absolute;bottom:16px;left:16px;right:16px;font-size:.72rem;color:#fff;background:rgba(10,22,40,.55);padding:8px 14px;border-radius:8px;letter-spacing:.06em}
.abt-txt h2{font-size:1.9rem;font-weight:800;color:var(--navy);margin-bottom:16px;line-height:1.2}
.abt-txt p{font-size:.9rem;color:var(--gray-600);line-height:1.8;margin-bottom:14px}
.abt-flow{display:flex;flex-wrap:wrap;gap:3px;margin:20px 0;align-items:center;font-size:.75rem;color:var(--gray-600)}
.abt-flow span{padding:5px 10px;background:var(--blue-ghost);border-radius:16px;font-weight:600;color:var(--blue);white-space:nowrap}
.abt-flow .arr{color:var(--gray-400)}
.abt-nums{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}
.abt-num{text-align:center;padding:18px 10px;background:var(--blue-ghost);border-radius:var(--radius-md)}
.abt-num .big{font-size:1.5rem;font-weight:800;color:var(--blue);line-height:1.1}
.abt-num .lbl{font-size:.68rem;color:var(--gray-600);margin-top:4px}
@media(max-width:768px){.abt-row{grid-template-columns:1fr;gap:32px}.abt-nums{grid-template-columns:repeat(2,1fr)}}

/* 理念 */
.vis-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.vis-card{padding:28px 22px;background:var(--white);border-radius:var(--radius-md);border:1px solid var(--gray-100);text-align:center}
.vis-card .ic{font-size:2rem;margin-bottom:10px}
.vis-card h4{font-size:.95rem;font-weight:700;color:var(--navy);margin-bottom:8px}
.vis-card p{font-size:.8rem;color:var(--gray-600);line-height:1.6}
@media(max-width:768px){.vis-grid{grid-template-columns:1fr}}

/* CTA */
.cta{background:linear-gradient(135deg,var(--navy),#12305c);text-align:center;padding:72px 28px}
.cta h2{color:#fff;font-size:1.8rem;font-weight:800;margin-bottom:12px}
.cta p{color:rgba(255,255,255,.55);font-size:.95rem;margin-bottom:28px}
.cta .cta-ph{color:var(--blue-glow);font-size:1.6rem;font-weight:800;letter-spacing:.05em}

/* 页脚 */
.ftr{background:#060d1a;color:rgba(255,255,255,.65);padding:56px 0 28px}
.ftr-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;margin-bottom:36px}
.ftr h4{font-size:.78rem;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.ftr p,.ftr a{font-size:.78rem;line-height:1.8;display:block;color:rgba(255,255,255,.45)}.ftr a:hover{color:var(--blue-glow)}
.ftr-btm{border-top:1px solid rgba(255,255,255,.06);padding-top:24px;text-align:center;font-size:.68rem;color:rgba(255,255,255,.25)}
.ftr-btm a{display:inline;color:rgba(255,255,255,.35)}
@media(max-width:768px){.ftr-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:480px){.ftr-grid{grid-template-columns:1fr}}

.fd{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}.fd.on{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){.fd{transition:none!important;opacity:1!important;transform:none!important}}

/* ===== 首页轮播翻图 ===== */
.carousel{position:relative;height:600px;min-height:480px;overflow:hidden;background:var(--navy);margin-top:76px}
.carousel .slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;pointer-events:none}
.carousel .slide.on{opacity:1;pointer-events:auto}
.carousel .slide img{width:100%;height:100%;object-fit:cover}
.carousel .slide::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,22,40,.35) 0%,rgba(10,22,40,.72) 100%)}
.carousel .sl-cap{position:absolute;z-index:2;inset:0;display:flex;align-items:center;padding:40px 0}
.carousel .sl-cap .wh{max-width:var(--max-w);margin:0 auto;padding:0 28px;width:100%;text-align:left;color:#fff}
.carousel .sl-cap .badge{display:inline-block;padding:6px 16px;border:1px solid rgba(255,255,255,.35);border-radius:50px;color:#fff;font-size:.72rem;font-weight:500;letter-spacing:.08em;margin-bottom:22px;background:rgba(10,22,40,.35);backdrop-filter:blur(4px)}
.carousel .sl-cap h1{font-size:clamp(1.9rem,4.6vw,3.1rem);font-weight:900;line-height:1.18;margin-bottom:16px;letter-spacing:-.03em;text-shadow:0 4px 24px rgba(0,0,0,.45)}
.carousel .sl-cap h1 em{font-style:normal;color:var(--blue-glow)}
.carousel .sl-cap p{font-size:1.02rem;color:rgba(255,255,255,.85);line-height:1.75;max-width:680px;text-shadow:0 2px 12px rgba(0,0,0,.5);margin-bottom:6px}
.carousel .sl-cap .btns{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;align-items:center}
.carousel .sl-cap .more-link{display:inline-flex;align-items:center;gap:6px;color:#fff;font-size:.95rem;font-weight:600;border-bottom:2px solid var(--blue-glow);padding-bottom:4px;transition:all var(--t)}
.carousel .sl-cap .more-link:hover{color:var(--blue-glow);gap:10px}
.carousel .dots{position:absolute;z-index:3;bottom:28px;left:0;right:0;display:flex;justify-content:center;gap:10px}
.carousel .dots button{width:34px;height:4px;border-radius:4px;border:none;background:rgba(255,255,255,.3);cursor:pointer;transition:all var(--t);padding:0}
.carousel .dots button.on{background:var(--blue-glow)}
.carousel .arrow{position:absolute;z-index:3;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(10,22,40,.35);color:#fff;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--t);backdrop-filter:blur(4px)}
.carousel .arrow:hover{background:var(--blue);border-color:var(--blue)}
.carousel .arrow.prev{left:24px}.carousel .arrow.next{right:24px}
@media(max-width:768px){.carousel{min-height:420px}.carousel .arrow{display:none}}

/* ===== 首页轮播翻图 (Swiper) ===== */
.carousel{position:relative;height:600px;min-height:480px;overflow:hidden;background:var(--navy);margin-top:76px}
.carousel .swiper,.carousel .swiper-wrapper{height:100%}
.carousel .swiper-slide{position:relative;overflow:hidden;background:var(--navy)}
.carousel .swiper-slide>img{width:100%;height:100%;object-fit:cover;transform:scale(1.02);transition:transform 6s ease}
.carousel .swiper-slide::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,22,40,.3) 0%,rgba(10,22,40,.7) 100%)}
.carousel .sl-cap{position:absolute;z-index:2;inset:0;display:flex;align-items:center}
.carousel .sl-cap .wh{max-width:var(--max-w);margin:0 auto;padding:0 28px;width:100%;text-align:left;color:#fff}
.carousel .sl-cap .badge{display:inline-block;padding:6px 16px;border:1px solid rgba(255,255,255,.35);border-radius:50px;color:#fff;font-size:.72rem;font-weight:500;letter-spacing:.08em;margin-bottom:22px;background:rgba(10,22,40,.35);backdrop-filter:blur(4px);opacity:0}
.carousel .sl-cap h1{font-size:clamp(1.9rem,4.6vw,3.1rem);font-weight:900;line-height:1.18;margin-bottom:16px;letter-spacing:-.03em;text-shadow:0 4px 24px rgba(0,0,0,.45);opacity:0}
.carousel .sl-cap h1 em{font-style:normal;color:var(--blue-glow)}
.carousel .sl-cap p{font-size:1.02rem;color:rgba(255,255,255,.85);line-height:1.75;max-width:680px;text-shadow:0 2px 12px rgba(0,0,0,.5);margin-bottom:6px;opacity:0}
.carousel .sl-cap .btns{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;align-items:center;opacity:0}
.carousel .sl-cap .more-link{display:inline-flex;align-items:center;gap:6px;color:#fff;font-size:.95rem;font-weight:600;border-bottom:2px solid var(--blue-glow);padding-bottom:4px;transition:all var(--t);text-decoration:none}
.carousel .sl-cap .more-link:hover{color:var(--blue-glow);gap:10px}
.carousel .sl-cap .tx-anim{animation:fadeInUp .5s cubic-bezier(.22,.61,.36,1) forwards}
@keyframes fadeInUp{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
.carousel .swiper-pagination{bottom:26px !important}
.carousel .swiper-pagination-bullet{width:12px;height:12px;border-radius:6px;margin:0 5.6px;border:1px solid #fff;background:transparent;opacity:1;transition:width .3s ease,background .3s ease}
.carousel .swiper-pagination-bullet-active{width:27px;background:#fff}
.carousel .swiper-button-prev,.carousel .swiper-button-next{width:46px;height:46px;color:#fff;background:rgba(10,22,40,.35);border-radius:50%;border:1px solid rgba(255,255,255,.3);transition:all var(--t)}
.carousel .swiper-button-prev:hover,.carousel .swiper-button-next:hover{background:var(--blue);border-color:var(--blue)}
.carousel .swiper-button-prev::after,.carousel .swiper-button-next::after{font-size:1.1rem;font-weight:700}
.carousel .swiper-button-prev{left:24px}.carousel .swiper-button-next{right:24px}
@media(max-width:768px){.carousel{height:440px;min-height:440px}.carousel .swiper-button-prev,.carousel .swiper-button-next{display:none}}

/* ===== 产品中心 Mega 菜单（按参考截图9大品类） ===== */
.nav-bar-inner{position:relative}
.nav-links>li.has-mega{position:static}
.nav-mega{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:min(1080px,calc(100vw - 32px));background:#fff;border-radius:var(--radius-lg);box-shadow:0 24px 64px rgba(10,22,40,.18);border:1px solid var(--gray-100);padding:22px;opacity:0;visibility:hidden;transition:all var(--t);z-index:200;pointer-events:none}
.nav-links>li:hover>.nav-mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);pointer-events:auto}
.nav-mega .mega-hd{display:flex;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--gray-100);margin-bottom:16px}
.nav-mega .mega-hd strong{font-size:1rem;color:var(--navy)}
.nav-mega .mega-hd span{font-size:.75rem;color:var(--gray-400)}
.nav-mega .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mega-it{display:block;padding:12px 14px;border-radius:10px;border:1px solid var(--gray-100);transition:all var(--t);text-decoration:none}
.mega-it:hover{background:var(--blue-ghost);border-color:var(--blue-pale);transform:translateY(-1px)}
.mega-it h5{font-size:.9rem;font-weight:700;color:var(--navy);margin-bottom:4px}
.mega-it p{font-size:.76rem;color:var(--gray-600);line-height:1.5}
.mega-it span{display:inline-block;margin-top:6px;font-size:.66rem;color:var(--blue);background:var(--blue-ghost);padding:2px 8px;border-radius:50px}
.mega-more{display:block;text-align:center;margin-top:16px;padding:10px;background:var(--navy);color:#fff;border-radius:8px;font-size:.8rem;font-weight:600;transition:all var(--t);text-decoration:none}
.mega-more:hover{background:var(--blue)}
@media(max-width:900px){
  .nav-mega{position:static;transform:none;width:100%;opacity:1;visibility:visible;box-shadow:none;border:none;border-radius:0;padding:0 0 12px 8px;display:none;pointer-events:auto}
  .nav-links>li.open>.nav-mega{display:block}
  .nav-links>li:hover>.nav-mega{display:block}
  .nav-mega .mega-grid{grid-template-columns:repeat(2,1fr)}
}

/* ===== 站内搜索 ===== */
.nav-search{margin-left:20px;width:38px;height:38px;border-radius:50%;border:1.5px solid var(--gray-200);background:var(--white);cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:all var(--t);flex-shrink:0;line-height:1}
.nav-search:hover{border-color:var(--blue);color:var(--blue);transform:translateY(-1px)}
.search-mask{position:fixed;inset:0;background:rgba(10,22,40,.55);z-index:300;opacity:0;visibility:hidden;transition:all var(--t)}
.search-mask.on{opacity:1;visibility:visible}
.search-modal{position:fixed;top:16%;left:50%;transform:translateX(-50%) translateY(-14px);width:min(640px,calc(100vw - 32px));background:#fff;border-radius:16px;box-shadow:0 24px 80px rgba(10,22,40,.32);z-index:301;opacity:0;visibility:hidden;transition:all var(--t)}
.search-modal.on{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.search-box{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--gray-100)}
.search-box input{flex:1;border:none;outline:none;font-size:1rem;color:var(--gray-800);background:transparent}
.search-box input::placeholder{color:var(--gray-400)}
.search-box button{border:none;background:var(--gray-100);width:32px;height:32px;border-radius:50%;cursor:pointer;color:var(--gray-600);font-size:.85rem;transition:all var(--t);flex-shrink:0}
.search-box button:hover{background:var(--gray-200)}
.search-results{max-height:380px;overflow:auto;padding:8px;list-style:none}
.search-results li a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px 14px;border-radius:8px;font-size:.9rem;color:var(--gray-800);text-decoration:none;transition:background var(--t)}
.search-results li a:hover{background:var(--blue-ghost);color:var(--blue)}
.search-results li .tag{font-size:.72rem;color:var(--gray-400);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60%}
.search-empty{padding:26px 20px;text-align:center;color:var(--gray-400);font-size:.85rem}
@media(max-width:900px){.nav-search{margin-left:8px;width:36px;height:36px}}

/* ===== 单行导航（logo左 + 菜单右，参考同行） ===== */
.nav-inner{max-width:1280px;margin:0 auto;padding:0 28px;height:76px;display:flex;align-items:center;justify-content:space-between;position:relative}
.nav-brand{font-size:1.15rem;font-weight:800;color:var(--navy);display:inline-flex;align-items:baseline;gap:10px;letter-spacing:.02em;text-decoration:none}
.nav-brand small{font-size:.72rem;color:var(--gray-400);font-weight:400}
.nav-right{display:flex;align-items:center;height:76px}
.nav-links>li>a,.nav-links>li>.nav-label{padding:0 16px;height:76px}
.nav-links>li>a::after,.nav-links>li>.nav-label::after{left:16px;right:16px}
.nav-mega{top:100%}
.nav-search{margin-left:8px}
.carousel{margin-top:76px;height:600px;min-height:480px}
.page-hero{padding:132px 0 64px}
@media(max-width:900px){
  .nav-inner{height:60px;padding:0 16px}
  .nav-right{height:60px}
  .nav-links{top:60px}
  .nav-brand{font-size:1rem}
  .nav-brand small{display:none}
}

/* ===== 黑色导航 ===== */
.nav{background:#0b1522;border-bottom:1px solid rgba(255,255,255,.08)}
.nav.scrolled{box-shadow:0 10px 36px rgba(0,0,0,.4)}
.nav-brand{color:#fff}
.nav-brand small{color:rgba(255,255,255,.4)}
.nav-links>li>a,.nav-links>li>.nav-label{color:rgba(255,255,255,.82)}
.nav-links>li:hover>a,.nav-links>li:hover>.nav-label,.nav-links>li>a.active{color:var(--blue-glow)}
.nav-links>li>a::after,.nav-links>li>.nav-label::after{background:var(--blue-glow)}
.nav-search{border-color:rgba(255,255,255,.28);color:rgba(255,255,255,.85);background:transparent}
.nav-search:hover{border-color:var(--blue-glow);color:var(--blue-glow)}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{background:#fff}
@media(max-width:900px){
  .nav-links{background:var(--navy);border-top:1px solid rgba(255,255,255,.08)}
  .nav-links>li{border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-links>li>a,.nav-links>li>.nav-label{color:rgba(255,255,255,.85)}
  .nav-dropdown a{color:rgba(255,255,255,.75)}
}

/* ===== 首页九大品类卡片 ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cat-card{display:block;background:#fff;border:1px solid var(--gray-100);border-radius:var(--radius-md);padding:22px 20px;text-decoration:none;transition:all var(--t)}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--blue-pale)}
.cat-card h4{font-size:1rem;font-weight:700;color:var(--navy);margin-bottom:8px;padding-bottom:8px;border-bottom:2px solid var(--blue-ghost)}
.cat-card p{font-size:.8rem;color:var(--gray-600);line-height:1.6;margin-bottom:10px}
.cat-card span{display:inline-block;font-size:.68rem;color:var(--blue);background:var(--blue-ghost);padding:2px 8px;border-radius:50px}
@media(max-width:900px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.cat-grid{grid-template-columns:1fr}}

/* ===== 首屏定位语 ===== */
.carousel .sl-cap .s1-l1,.carousel .sl-cap .s1-l2{font-family:"Source Han Sans SC","Noto Sans CJK SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:clamp(1.5rem,3vw,2.6rem);font-weight:600;line-height:1.5;color:#fff;text-shadow:0 2px 16px rgba(0,0,0,.55)}
.carousel .sl-cap .s1-l2 strong{font-size:clamp(1.8rem,3.6vw,3.2rem);font-weight:700;color:var(--blue-glow);text-shadow:0 2px 20px rgba(100,181,246,.45)}