/* ============================================================
   Brothersbox Industrial Co., Ltd. — 全站样式
   设计语言：现代 SaaS 商务蓝白风（源自功能清单设计令牌）
   ============================================================ */
:root{
  --bg:#f3faf5; --surface:#ffffff;
  --ink:#10241a; --ink-soft:#4d655a; --ink-faint:#87a294;
  --accent:#2f9e63; --accent-deep:#156b41; --accent-soft:#e2f6ea;
  --gold:#d9a441; --gold-soft:#faf3e3;
  --line:#d9eee1;
  --hero-a:#0b3323; --hero-b:#1c7a4b;
  --radius:16px; --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,36,26,.05),0 4px 14px rgba(28,122,75,.06);
  --shadow-2:0 8px 28px rgba(28,122,75,.12);
  --sans:"Sora","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono",Consolas,monospace;
  --sp-2:8px;--sp-3:16px;--sp-4:24px;--sp-5:40px;--sp-6:64px;--sp-7:96px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:#fff}

.wrap{max-width:1160px;margin:0 auto;padding:0 var(--sp-4)}
.section{padding:var(--sp-6) 0}
.section.tight{padding:var(--sp-5) 0}
.section-head{text-align:center;max-width:640px;margin:0 auto var(--sp-5)}
.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent);font-weight:500}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;letter-spacing:-.01em;margin-top:6px}
.section-head p{color:var(--ink-soft);margin-top:8px;font-size:14.5px}
.section-head.light h2,.section-head.light p{color:#fff}
.section-head.light .eyebrow{color:#86d8ab}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);font-weight:600;font-size:14px;
  padding:11px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;transition:.2s;line-height:1.4;white-space:nowrap}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:#fff;box-shadow:0 4px 14px rgba(47,158,99,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(47,158,99,.45)}
.btn-gold{background:linear-gradient(135deg,#e8b95c,#c98f2c);color:#3a2a08;box-shadow:0 4px 14px rgba(217,164,65,.4)}
.btn-gold:hover{transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--accent);border-color:var(--accent)}
.btn-ghost:hover{background:var(--accent-soft)}
.btn-light{background:#fff;color:var(--accent-deep)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.18)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:8px 16px;font-size:13px;border-radius:8px}
.btn-block{width:100%;justify-content:center}

/* ============ 顶部导航 ============ */
.topbar{background:var(--hero-a);color:rgba(255,255,255,.75);font-size:12px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:6px;padding-bottom:6px;gap:12px}
.topbar a{color:rgba(255,255,255,.85)}
.topbar .tb-right{display:flex;gap:18px;align-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.04em}
header.site{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
header.site.scrolled{box-shadow:0 4px 20px rgba(16,36,26,.08)}
.nav{display:flex;align-items:center;gap:var(--sp-4);height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:19px;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand .logo{width:38px;height:38px;flex:none}
.brand b{color:var(--accent)}
.brand small{display:block;font-family:var(--mono);font-size:8.5px;font-weight:400;letter-spacing:.22em;color:var(--ink-faint);text-transform:uppercase;line-height:1}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu>div{position:relative}
.menu a.m-link{display:flex;align-items:center;gap:5px;padding:10px 14px;border-radius:9px;font-weight:600;font-size:14px;color:var(--ink)}
.menu a.m-link:hover,.menu>div:hover>a.m-link{background:var(--accent-soft);color:var(--accent)}
.menu a.m-link .car{width:10px;height:10px;transition:.2s}
.menu>div:hover .car{transform:rotate(180deg)}
.m-cta{margin-left:8px}
.dropdown{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(6px);
  width:560px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-2);
  padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:2px;opacity:0;visibility:hidden;transition:.18s}
.menu>div:hover .dropdown,.menu>div:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;font-size:13px;font-weight:600;color:var(--ink)}
.dropdown a:hover{background:var(--accent-soft);color:var(--accent-deep)}
.dropdown a .dot{width:9px;height:9px;border-radius:3px;flex:none}
.dropdown .dd-all{grid-column:1/-1;margin-top:6px;border-top:1px solid var(--line);padding-top:10px;color:var(--accent);font-weight:600;font-size:13px;display:flex;gap:6px;align-items:center}
.hamburger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:9px;width:42px;height:42px;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4.5px}
.hamburger span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* 移动菜单 */
.mnav{display:none;position:fixed;inset:0;z-index:1000;background:#fff;padding:18px;overflow:auto}
.mnav.open{display:block}
.mnav-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.mnav-close{background:var(--accent-soft);border:none;width:40px;height:40px;border-radius:10px;font-size:18px;color:var(--accent-deep);cursor:pointer}
.mnav a.m-group{display:flex;justify-content:space-between;align-items:center;padding:13px 4px;border-bottom:1px solid var(--line);font-weight:600;color:var(--ink);font-size:15px}
.mnav .m-sub{display:none;padding:4px 0 10px}
.mnav .m-sub.open{display:block}
.mnav .m-sub a{display:block;padding:8px 10px;color:var(--ink-soft);font-size:14px;border-radius:8px}
.mnav .m-sub a:hover{background:var(--accent-soft);color:var(--accent)}
.mnav .m-caret{font-size:11px;color:var(--ink-faint)}

/* ============ 内页 Hero + 面包屑 ============ */
.page-hero{position:relative;background:linear-gradient(135deg,var(--hero-a) 0%,#114931 55%,var(--hero-b) 100%);color:#fff;padding:var(--sp-6) 0;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:44px 44px;mask-image:radial-gradient(60rem 26rem at 85% -30%,#000 25%,transparent 75%)}
.page-hero::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;right:-80px;top:-110px;
  background:radial-gradient(circle,rgba(47,158,99,.5),transparent 70%);filter:blur(8px)}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(24px,3.2vw,38px);font-weight:600;letter-spacing:-.01em}
.page-hero p{color:rgba(255,255,255,.78);max-width:60em;margin-top:8px;font-size:14.5px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:7px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.62);margin-bottom:12px}
.crumb a{color:rgba(255,255,255,.85)}
.crumb .sep{opacity:.5}
.crumb b{color:#86d8ab;font-weight:500}
.crumb.on-page{color:var(--ink-faint);margin:var(--sp-4) 0 0}
.crumb.on-page a{color:var(--ink-soft)}
.crumb.on-page b{color:var(--accent)}

/* ============ 首页 Banner 轮播 ============ */
.banner{position:relative;margin-top:var(--sp-4);border-radius:24px;overflow:hidden;height:440px;background:var(--hero-a)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;display:flex;align-items:center}
.slide.active{opacity:1}
.slide::before{content:"";position:absolute;inset:0;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:44px 44px}
.slide .s-inner{position:relative;z-index:2;display:flex;align-items:center;gap:var(--sp-5);width:100%;max-width:1160px;margin:0 auto;padding:0 var(--sp-5)}
.slide .s-copy{flex:1.2;min-width:0}
.slide .s-art{flex:1;display:flex;justify-content:center;align-items:center;min-width:0}
.slide .s-art svg{width:min(380px,80%);filter:drop-shadow(0 24px 40px rgba(0,0,0,.35))}
.slide .s-kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:#86d8ab;
  border:1px solid rgba(125,180,255,.35);padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.06)}
.slide h2{font-size:clamp(24px,3.4vw,40px);font-weight:600;letter-spacing:-.01em;line-height:1.15;margin:14px 0 10px;color:#fff}
.slide h2 em{font-style:normal;color:#86d8ab}
.slide p{color:rgba(255,255,255,.78);max-width:34em;font-size:15px}
.slide .s-btns{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.s1{background:linear-gradient(135deg,#0b3323 0%,#114931 60%,#1c7a4b 100%)}
.s2{background:linear-gradient(135deg,#0a2b1c 0%,#14492f 55%,#2f9e63 130%)}
.s3{background:linear-gradient(135deg,#0a2e1e 0%,#156b41 70%,#2f9e63 125%)}
.banner-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.banner-dots button{width:26px;height:5px;border-radius:99px;border:none;background:rgba(255,255,255,.3);cursor:pointer;transition:.25s}
.banner-dots button.active{background:#86d8ab;width:40px}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:#fff;font-size:17px;cursor:pointer;backdrop-filter:blur(4px);transition:.2s}
.banner-arrow:hover{background:rgba(255,255,255,.25)}
.banner-arrow.prev{left:16px}.banner-arrow.next{right:16px}

/* ============ 分类卡片网格 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.cat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:.25s;display:block;color:var(--ink)}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-2);border-color:transparent;color:var(--ink)}
.cat-card .cc-art{padding:6px}
.cat-card .cc-art svg{width:100%;height:auto;border-radius:10px}
.cat-card .cc-body{padding:12px 14px 14px}
.cat-card h3{font-size:14.5px;font-weight:600;line-height:1.35}
.cat-card .cc-n{font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--accent);text-transform:uppercase;margin-top:3px}
.cat-card .cc-more{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--accent);font-weight:600;margin-top:8px}

/* ============ 公司简介 ============ */
.about-split{display:grid;grid-template-columns:1fr 1.1fr;gap:var(--sp-5);align-items:center}
.about-visual{position:relative;border-radius:20px;overflow:hidden;background:linear-gradient(135deg,var(--hero-a),var(--hero-b));padding:34px}
.about-visual .av-grid{position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:38px 38px}
.about-visual svg.av-box{position:relative;z-index:1;width:100%;filter:drop-shadow(0 18px 30px rgba(0,0,0,.3))}
.about-visual .av-badge{position:absolute;z-index:2;bottom:18px;right:18px;background:#fff;border-radius:12px;padding:10px 16px;box-shadow:var(--shadow-2);
  font-family:var(--mono);font-size:11px;color:var(--accent-deep)}
.about-visual .av-badge b{display:block;font-size:19px;color:var(--accent)}
.about-copy .eyebrow{margin-bottom:4px}
.about-copy h2{font-size:clamp(21px,2.5vw,29px);font-weight:600;letter-spacing:-.01em}
.about-copy p{color:var(--ink-soft);margin-top:12px;font-size:14.5px}
.about-copy .btn{margin-top:20px}
.mini-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
.mini-facts div{background:var(--accent-soft);border-radius:10px;padding:10px 14px;font-size:13px}
.mini-facts b{display:block;color:var(--accent-deep);font-size:15px}

/* ============ 数据计数器 ============ */
.stats-band{background:linear-gradient(135deg,var(--hero-a),var(--hero-b));border-radius:24px;padding:var(--sp-5);position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:40px 40px}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(6,1fr);gap:var(--sp-3);text-align:center}
.stat .num{font-size:clamp(26px,3vw,38px);font-weight:600;color:#fff;letter-spacing:-.02em}
.stat .num i{font-style:normal;color:#86d8ab;font-size:.6em;vertical-align:6px;margin-left:2px}
.stat .lbl{font-size:12px;color:rgba(255,255,255,.66);margin-top:2px;letter-spacing:.04em}

/* ============ 核心优势 ============ */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.feat-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-4);transition:.25s}
.feat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.feat-card .f-icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:14px}
.feat-card .f-icon svg{width:26px;height:26px}
.feat-card h3{font-size:16px;font-weight:600}
.feat-card p{color:var(--ink-soft);font-size:13.5px;margin-top:6px}

/* ============ 流程 ============ */
.proc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.proc-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-4)}
.proc-card .p-no{font-family:var(--mono);font-size:26px;font-weight:500;color:var(--accent-soft);-webkit-text-stroke:1.2px var(--accent);letter-spacing:.02em}
.proc-card h3{font-size:16px;font-weight:600;margin-top:8px}
.proc-card p{color:var(--ink-soft);font-size:13px;margin-top:5px}
.steps8{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;counter-reset:st}
.step8{text-align:center;position:relative;padding-top:34px}
.step8::before{counter-increment:st;content:counter(st,decimal-leading-zero);position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:#fff;
  font-family:var(--mono);font-size:10.5px;display:grid;place-items:center;font-weight:500;box-shadow:0 3px 8px rgba(47,158,99,.3)}
.step8::after{content:"";position:absolute;top:13px;left:calc(50% + 20px);width:calc(100% - 40px);height:2px;background:var(--line)}
.step8:last-child::after{display:none}
.step8 .st-t{font-size:12.5px;font-weight:600}
.step8 .st-d{font-size:10.5px;color:var(--ink-faint);line-height:1.5;margin-top:2px}

/* ============ 客户评价 ============ */
.testi-band{position:relative;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,var(--hero-a),#114931);padding:var(--sp-6) 0}
.testi-band::before{content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px}
.testi-stage{position:relative;max-width:760px;margin:0 auto;padding:0 var(--sp-4);min-height:220px;z-index:1}
.testi{position:absolute;inset:0;opacity:0;transform:translateY(12px);transition:.45s;pointer-events:none;text-align:center}
.testi.active{opacity:1;transform:none;pointer-events:auto}
.testi .stars{color:var(--gold);font-size:15px;letter-spacing:3px}
.testi blockquote{color:#fff;font-size:clamp(15px,1.9vw,19px);font-weight:500;line-height:1.65;margin:14px 0 18px}
.testi .who{color:#86d8ab;font-weight:600;font-size:14px}
.testi .role{color:rgba(255,255,255,.55);font-size:12px;margin-top:2px}
.testi-nav{display:flex;justify-content:center;gap:10px;margin-top:26px;position:relative;z-index:1}
.testi-nav button{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.08);color:#fff;cursor:pointer;transition:.2s}
.testi-nav button:hover{background:rgba(255,255,255,.22)}

/* ============ 新闻卡片 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-3)}
.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column;color:var(--ink)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--ink)}
.news-card .n-art{height:130px;display:grid;place-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:rgba(255,255,255,.85);text-transform:uppercase}
.news-card .n-body{padding:14px 16px 16px;flex:1;display:flex;flex-direction:column}
.news-card .n-meta{display:flex;gap:10px;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint);letter-spacing:.06em}
.news-card .n-meta b{color:var(--accent);font-weight:500}
.news-card h3{font-size:15px;font-weight:600;line-height:1.45;margin-top:8px}
.news-card p{color:var(--ink-soft);font-size:12.5px;margin-top:6px;flex:1}
.news-card .n-more{color:var(--accent);font-weight:600;font-size:12.5px;margin-top:12px;display:inline-flex;gap:5px;align-items:center}
.n-more svg,.cc-more svg,.dd-all svg,.btn svg{width:14px;height:14px;flex:none}

/* ============ CTA 横幅 ============ */
.cta-band{position:relative;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,var(--hero-a),var(--hero-b));padding:var(--sp-6);text-align:center}
.cta-band::before{content:"";position:absolute;inset:0;opacity:.45;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:44px 44px;
  mask-image:radial-gradient(50rem 22rem at 50% -40%,#000 30%,transparent 75%)}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,34px);font-weight:600;letter-spacing:-.01em}
.cta-band p{color:rgba(255,255,255,.75);margin-top:8px}
.cta-band .btns{display:flex;gap:14px;justify-content:center;margin-top:24px;flex-wrap:wrap}

/* ============ 产品页 ============ */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.p-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column;color:var(--ink)}
.p-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--ink)}
.p-card .p-img{aspect-ratio:5/4;overflow:hidden;background:hsl(var(--h,222),55%,95%)}
.p-card .p-img svg{width:100%;height:100%;transition:transform .4s}
.p-card:hover .p-img svg{transform:scale(1.05)}
.p-card .p-body{padding:13px 14px 14px;flex:1;display:flex;flex-direction:column}
.p-card h3{font-size:13.5px;font-weight:600;line-height:1.45;flex:1}
.p-card .p-meta{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-family:var(--mono);font-size:10.5px;color:var(--ink-faint)}
.p-card .p-meta b{color:var(--accent);font-weight:500}
.cat-anchor-row{display:flex;align-items:center;gap:12px;margin:var(--sp-5) 0 var(--sp-3)}
.cat-anchor-row h3{font-size:19px;font-weight:600;letter-spacing:-.01em}
.cat-anchor-row .rule{flex:1;height:1px;background:var(--line)}
.cat-anchor-row a.go{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--accent)}
.cat-anchor-row .cnt{font-family:var(--mono);font-size:11px;color:var(--ink-faint)}

/* 分类页 */
.custom-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:var(--sp-3)}
.custom-item{display:flex;gap:10px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.custom-item .ck{width:22px;height:22px;flex:none;border-radius:7px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-top:2px}
.custom-item .ck svg{width:13px;height:13px}
.custom-item b{font-size:13.5px;display:block}
.custom-item span{font-size:12px;color:var(--ink-soft)}
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-3)}
.cert-strip{display:flex;gap:12px;overflow-x:auto;padding:4px 2px 10px;scroll-snap-type:x mandatory}
.cert-chip{flex:none;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 18px;min-width:170px}
.cert-chip b{font-size:13.5px;display:block}
.cert-chip span{font-size:11px;color:var(--ink-faint);font-family:var(--mono)}

/* 产品详情 */
.pd-layout{display:grid;grid-template-columns:1.05fr 1fr;gap:var(--sp-5);align-items:start}
.pd-gallery{position:sticky;top:90px}
.pd-main-img{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff}
.pd-main-img svg{width:100%;height:auto}
.pd-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.pd-thumbs .th{border:2px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;transition:.2s;background:#fff}
.pd-thumbs .th:hover,.pd-thumbs .th.active{border-color:var(--accent)}
.pd-thumbs .th svg{width:100%;height:auto}
.pd-info .crumb{margin:0 0 10px}
.pd-info h1{font-size:clamp(20px,2.6vw,28px);font-weight:600;letter-spacing:-.01em;line-height:1.3}
.pd-sub{color:var(--ink-soft);font-size:13.5px;margin-top:8px}
.pd-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.pd-tags .tag{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;padding:4px 11px;border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);font-weight:500}
.spec-table{width:100%;border-collapse:collapse;margin-top:18px;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.spec-table tr{border-bottom:1px solid var(--line)}
.spec-table tr:last-child{border-bottom:none}
.spec-table th{width:130px;text-align:left;font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);font-weight:500;padding:11px 16px;background:#fafcff;vertical-align:top}
.spec-table td{padding:11px 16px;font-size:13.5px}
.pd-actions{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap}
.pd-note{font-size:12px;color:var(--ink-faint);margin-top:12px;display:flex;gap:6px;align-items:center}

/* 新闻详情 */
.article{max-width:780px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-5);box-shadow:var(--shadow-1)}
.article .a-meta{display:flex;gap:14px;font-family:var(--mono);font-size:11px;color:var(--ink-faint);letter-spacing:.08em}
.article .a-meta b{color:var(--accent);font-weight:500}
.article h1{font-size:clamp(22px,3vw,32px);font-weight:600;letter-spacing:-.02em;line-height:1.25;margin:10px 0 4px}
.article .a-body{margin-top:18px}
.article .a-body p{color:#2c3e5c;margin-bottom:14px;font-size:14.5px}
.a-nav{display:flex;justify-content:space-between;gap:12px;margin-top:var(--sp-4)}
.a-nav a{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 16px;font-size:13px;color:var(--ink);transition:.2s}
.a-nav a:hover{border-color:var(--accent);color:var(--accent)}
.a-nav a small{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:var(--ink-faint);text-transform:uppercase;margin-bottom:3px}
.a-nav a.next{text-align:right}

/* ============ 关于我们 ============ */
.equip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-3)}
.equip-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s}
.equip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.equip-card .e-art{height:120px;display:grid;place-items:center}
.equip-card .e-art svg{height:80px}
.equip-card .e-body{padding:14px 16px 16px}
.equip-card h3{font-size:15px;font-weight:600}
.equip-card p{font-size:12.5px;color:var(--ink-soft);margin-top:5px}
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.team-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-4);text-align:center;transition:.25s}
.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.avatar{width:64px;height:64px;border-radius:50%;margin:0 auto 12px;display:grid;place-items:center;color:#fff;font-weight:600;font-size:20px;letter-spacing:.02em}
.team-card h3{font-size:14.5px;font-weight:600}
.team-card .role{font-size:12px;color:var(--ink-soft);margin-top:3px}
.team-card .t-mail{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;color:var(--accent);margin-top:9px;font-family:var(--mono)}
.cert-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--sp-3)}
.cert-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 14px;text-align:center;cursor:zoom-in;transition:.2s;position:relative}
.cert-card:hover{border-color:var(--gold);box-shadow:0 6px 18px rgba(217,164,65,.18);transform:translateY(-3px)}
.cert-card .c-seal{width:40px;height:40px;margin:0 auto 10px;border-radius:50%;border:2px solid var(--gold);display:grid;place-items:center;color:var(--gold)}
.cert-card .c-seal svg{width:20px;height:20px}
.cert-card b{font-size:12.5px;display:block;line-height:1.35}
.cert-card span{font-size:10px;color:var(--ink-faint);font-family:var(--mono);display:block;margin-top:3px}
.client-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.client-logo{background:var(--surface);border:1px solid var(--line);border-radius:10px;height:64px;display:grid;place-items:center;
  color:var(--ink-faint);font-weight:600;font-size:13px;letter-spacing:.02em;filter:grayscale(1);opacity:.75;transition:.25s;text-align:center;padding:0 6px}
.client-logo:hover{filter:none;opacity:1;color:var(--accent-deep);border-color:var(--accent)}
.timeline{position:relative;max-width:720px;margin:0 auto;padding-left:26px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--accent),var(--line))}
.tl-item{position:relative;padding:0 0 26px 18px}
.tl-item::before{content:"";position:absolute;left:-24px;top:5px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.tl-item .y{font-family:var(--mono);font-size:12px;color:var(--accent);font-weight:500;letter-spacing:.08em}
.tl-item h3{font-size:16px;font-weight:600;margin-top:2px}
.tl-item p{font-size:13px;color:var(--ink-soft);margin-top:3px}

/* ============ 联系页 ============ */
.contact-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:var(--sp-4);align-items:start}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-4);box-shadow:var(--shadow-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:12.5px;font-weight:600;color:var(--ink)}
.field label i{color:#e5484d;font-style:normal}
.field input,.field select,.field textarea{font-family:var(--sans);font-size:14px;padding:11px 14px;border:1.5px solid var(--line);border-radius:10px;background:#fbfdff;color:var(--ink);transition:.2s;width:100%}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(47,158,99,.12)}
.hp-field{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}
.form-ok{display:none;text-align:center;padding:var(--sp-5) var(--sp-3)}
.form-ok .ok-ic{width:64px;height:64px;border-radius:50%;background:#e5f7ec;color:#1a9a55;display:grid;place-items:center;margin:0 auto 14px}
.form-ok .ok-ic svg{width:30px;height:30px}
.form-ok h3{font-size:20px}
.form-ok p{color:var(--ink-soft);font-size:13.5px;margin-top:6px}
.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:var(--sp-4);box-shadow:var(--shadow-1)}
.info-line{display:flex;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.info-line:last-child{border-bottom:none}
.info-line .ic{width:40px;height:40px;flex:none;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center}
.info-line .ic svg{width:19px;height:19px}
.info-line b{font-size:13.5px;display:block}
.info-line span{font-size:12.5px;color:var(--ink-soft)}
.social-row{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.soc-btn{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;padding:9px 15px;border-radius:10px;border:1px solid var(--line);color:var(--ink);transition:.2s;background:var(--surface)}
.soc-btn:hover{border-color:var(--accent);color:var(--accent)}
.soc-btn svg{width:15px;height:15px}
.map-embed{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);margin-top:var(--sp-4);box-shadow:var(--shadow-1)}
.map-embed iframe{width:100%;height:340px;border:0;display:block;filter:saturate(.9)}

/* ============ 页脚 ============ */
footer.site{background:var(--hero-a);color:rgba(255,255,255,.66);margin-top:var(--sp-7);position:relative;overflow:hidden}
footer.site::before{content:"";position:absolute;inset:0;opacity:.3;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px}
footer.site .wrap{position:relative;z-index:1}
.f-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:var(--sp-4);padding:var(--sp-6) 0 var(--sp-4)}
.f-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.02em}
.f-col a{display:block;color:rgba(255,255,255,.62);font-size:13px;padding:4.5px 0;transition:.15s}
.f-col a:hover{color:#86d8ab}
.f-about p{font-size:13px;line-height:1.8;max-width:30em}
.f-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:600;font-size:19px;margin-bottom:12px}
.f-contact div{display:flex;gap:10px;font-size:13px;padding:5px 0;color:rgba(255,255,255,.62)}
.f-contact svg{width:15px;height:15px;flex:none;margin-top:4px;color:#86d8ab}
.f-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:rgba(255,255,255,.4)}

/* ============ 浮动按钮（WhatsApp + 聊天） ============ */
.float-stack{position:fixed;right:20px;bottom:20px;z-index:1500;display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.float-wa{width:50px;height:50px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 6px 18px rgba(37,211,102,.45);transition:.2s}
.float-wa:hover{transform:scale(1.08)}
.float-wa svg{width:26px;height:26px;color:#fff}
/* 聊天按钮 */
.chat-fab{width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;position:relative;
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));box-shadow:0 8px 24px rgba(47,158,99,.5);
  display:grid;place-items:center;transition:.25s;animation:fab-pulse 3s infinite}
.chat-fab:hover{transform:scale(1.08)}
.chat-fab svg{width:26px;height:26px;color:#fff}
@keyframes fab-pulse{0%{box-shadow:0 8px 24px rgba(47,158,99,.5),0 0 0 0 rgba(47,158,99,.35)}70%{box-shadow:0 8px 24px rgba(47,158,99,.5),0 0 0 16px rgba(47,158,99,0)}100%{box-shadow:0 8px 24px rgba(47,158,99,.5),0 0 0 0 rgba(47,158,99,0)}}
.chat-badge{position:absolute;top:-2px;right:-2px;min-width:20px;height:20px;border-radius:99px;background:#e5484d;color:#fff;
  font-size:11px;font-weight:600;display:none;place-items:center;padding:0 5px;border:2px solid #fff}
.chat-badge.show{display:grid}
/* 主动邀聊气泡 */
.chat-invite{position:absolute;bottom:66px;right:0;width:250px;background:#fff;border:1px solid var(--line);border-radius:14px 14px 4px 14px;
  box-shadow:var(--shadow-2);padding:14px 16px;font-size:13px;color:var(--ink);display:none;animation:invite-in .3s}
.chat-invite.show{display:block}
@keyframes invite-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.chat-invite b{display:block;margin-bottom:3px}
.chat-invite p{color:var(--ink-soft);font-size:12.5px;line-height:1.5}
.chat-invite .ci-x{position:absolute;top:6px;right:10px;background:none;border:none;color:var(--ink-faint);cursor:pointer;font-size:13px}

/* ============ 聊天窗口 ============ */
.chat-win{position:fixed;right:20px;bottom:92px;width:360px;max-width:calc(100vw - 32px);height:520px;max-height:calc(100vh - 130px);
  background:#fff;border-radius:18px;box-shadow:0 24px 60px rgba(16,36,26,.28);z-index:1600;display:none;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);animation:chat-in .28s cubic-bezier(.16,1,.3,1)}
.chat-win.open{display:flex}
@keyframes chat-in{from{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:none}}
.cw-head{background:linear-gradient(135deg,var(--hero-a),var(--hero-b));color:#fff;padding:14px 16px;display:flex;align-items:center;gap:12px;flex:none}
.cw-agent-av{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);display:grid;place-items:center;position:relative;flex:none}
.cw-agent-av svg{width:20px;height:20px}
.cw-agent-av .st{position:absolute;bottom:0;right:0;width:11px;height:11px;border-radius:50%;border:2px solid var(--hero-a);background:#22c55e}
.cw-agent-av .st.off{background:#94a3b8}
.cw-head-info{flex:1;min-width:0}
.cw-head-info b{font-size:14px;display:block}
.cw-head-info span{font-size:11px;color:rgba(255,255,255,.65);font-family:var(--mono)}
.cw-min{background:rgba(255,255,255,.12);border:none;color:#fff;width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:14px}
.cw-body{flex:1;overflow-y:auto;padding:14px;background:var(--bg);display:flex;flex-direction:column;gap:10px}
.cw-body::-webkit-scrollbar{width:5px}
.cw-body::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px}
.msg{display:flex;gap:8px;max-width:88%}
.msg .m-av{width:26px;height:26px;border-radius:50%;flex:none;margin-top:2px;display:grid;place-items:center}
.msg.agent .m-av{background:linear-gradient(135deg,var(--accent),var(--accent-deep))}
.msg.agent .m-av svg{width:13px;height:13px;color:#fff}
.msg .m-bubble{padding:9px 13px;border-radius:14px;font-size:13.5px;line-height:1.55;word-break:break-word}
.msg.agent{align-self:flex-start}
.msg.agent .m-bubble{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px;color:var(--ink)}
.msg.me{align-self:flex-end;flex-direction:row-reverse}
.msg.me .m-bubble{background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:#fff;border-bottom-right-radius:4px}
.msg .m-time{font-size:9.5px;font-family:var(--mono);opacity:.6;align-self:flex-end;margin:0 4px;white-space:nowrap}
.msg .m-status{font-size:9.5px;font-family:var(--mono);opacity:.75;align-self:flex-end;white-space:nowrap}
.msg .m-img{max-width:200px;border-radius:10px;display:block;cursor:zoom-in}
.sys-msg{text-align:center;font-size:11px;color:var(--ink-faint);font-family:var(--mono);padding:2px 0}
.typing{display:inline-flex;gap:4px;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:14px;border-bottom-left-radius:4px}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--ink-faint);animation:tp 1.2s infinite}
.typing i:nth-child(2){animation-delay:.18s}.typing i:nth-child(3){animation-delay:.36s}
@keyframes tp{0%,60%,100%{transform:none;opacity:.4}30%{transform:translateY(-4px);opacity:1}}
/* 快捷 chips */
.chips{display:flex;gap:7px;flex-wrap:wrap;padding:0 14px 10px;background:var(--bg)}
.chip{font-size:11.5px;font-weight:600;padding:6px 12px;border-radius:999px;border:1.5px solid var(--accent);color:var(--accent);background:#fff;cursor:pointer;transition:.15s}
.chip:hover{background:var(--accent);color:#fff}
/* 表情面板 */
.emoji-panel{position:absolute;bottom:64px;left:12px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-2);
  padding:8px;display:none;grid-template-columns:repeat(8,1fr);gap:2px;z-index:5}
.emoji-panel.open{display:grid}
.emoji-panel button{background:none;border:none;font-size:17px;cursor:pointer;padding:4px;border-radius:7px}
.emoji-panel button:hover{background:var(--accent-soft)}
/* 输入区 */
.cw-input{flex:none;border-top:1px solid var(--line);background:#fff;padding:10px 12px}
.cw-tools{display:flex;gap:6px;margin-bottom:8px}
.cw-tools button{width:30px;height:30px;border-radius:8px;border:none;background:transparent;color:var(--ink-faint);cursor:pointer;display:grid;place-items:center;font-size:15px}
.cw-tools button:hover{background:var(--accent-soft);color:var(--accent)}
.cw-tools svg{width:17px;height:17px}
.cw-row{display:flex;gap:8px;align-items:flex-end}
.cw-row input[type=text]{flex:1;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;font-size:13.5px;font-family:var(--sans);background:#fbfdff}
.cw-row input[type=text]:focus{outline:none;border-color:var(--accent)}
.cw-send{width:38px;height:38px;flex:none;border-radius:12px;border:none;background:linear-gradient(135deg,var(--accent),var(--accent-deep));color:#fff;cursor:pointer;display:grid;place-items:center;transition:.2s}
.cw-send:hover{transform:scale(1.06)}
.cw-send svg{width:17px;height:17px}
/* 离线留言表单 */
.offline-form{padding:4px 0}
.offline-form .field{margin-bottom:10px}
.offline-form input,.offline-form textarea{font-size:13px;padding:9px 12px}
.offline-note{font-size:11.5px;color:var(--ink-soft);background:var(--gold-soft);border:1px solid #f0dfb6;border-radius:10px;padding:9px 12px;margin-bottom:12px;line-height:1.55}
/* Lightbox */
.lightbox{position:fixed;inset:0;z-index:3000;background:rgba(8,20,40,.9);display:none;place-items:center;padding:30px}
.lightbox.open{display:grid}
.lightbox img,.lightbox svg{max-width:min(760px,92vw);max-height:82vh;border-radius:14px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox .lb-x{position:absolute;top:22px;right:26px;background:none;border:none;color:#fff;font-size:30px;cursor:pointer}
.lightbox .lb-cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;color:rgba(255,255,255,.8);font-family:var(--mono);font-size:12px;letter-spacing:.1em}

/* ============ 客服工作台 ============ */
.wb{display:grid;grid-template-columns:290px 1fr 300px;height:100vh;background:var(--bg)}
.wb-side{background:var(--hero-a);color:#fff;display:flex;flex-direction:column}
.wb-side .wb-brand{padding:18px 16px;border-bottom:1px solid rgba(255,255,255,.12);display:flex;align-items:center;gap:10px;font-weight:600}
.wb-side .wb-brand small{display:block;font-family:var(--mono);font-size:9px;color:#86d8ab;letter-spacing:.2em;font-weight:400}
.wb-stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.12)}
.wb-stats div{background:rgba(255,255,255,.08);border-radius:10px;padding:9px 12px;font-size:11px;color:rgba(255,255,255,.6)}
.wb-stats b{display:block;font-size:19px;color:#fff}
.wb-sessions{flex:1;overflow-y:auto;padding:8px}
.wb-sess{padding:11px 12px;border-radius:11px;cursor:pointer;transition:.15s;margin-bottom:4px;border:1px solid transparent}
.wb-sess:hover{background:rgba(255,255,255,.07)}
.wb-sess.active{background:rgba(47,158,99,.25);border-color:rgba(125,180,255,.35)}
.wb-sess .ws-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.wb-sess b{font-size:13px;color:#fff}
.wb-sess .ws-time{font-family:var(--mono);font-size:9.5px;color:rgba(255,255,255,.4)}
.wb-sess .ws-last{font-size:11.5px;color:rgba(255,255,255,.55);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.wb-sess .ws-badge{min-width:17px;height:17px;border-radius:99px;background:#e5484d;color:#fff;font-size:10px;font-weight:600;display:grid;place-items:center;padding:0 4px}
.wb-main{display:flex;flex-direction:column;min-width:0}
.wb-main-head{background:var(--surface);border-bottom:1px solid var(--line);padding:13px 20px;display:flex;justify-content:space-between;align-items:center}
.wb-main-head b{font-size:15px}
.wb-main-head .ws-status{font-family:var(--mono);font-size:10.5px;color:var(--ink-faint)}
.wb-chat{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px}
.wb-chat .msg .m-bubble{font-size:13.5px}
.wb-input{background:var(--surface);border-top:1px solid var(--line);padding:12px 16px}
.wb-quick{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:9px}
.wb-quick .chip{font-size:10.5px;padding:4px 10px}
.wb-input-row{display:flex;gap:8px}
.wb-input-row input{flex:1;border:1.5px solid var(--line);border-radius:11px;padding:10px 14px;font-size:13.5px;font-family:var(--sans)}
.wb-input-row input:focus{outline:none;border-color:var(--accent)}
.wb-profile{background:var(--surface);border-left:1px solid var(--line);overflow-y:auto;padding:16px}
.wb-profile h4{font-size:12px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:10px}
.wb-pv-item{padding:9px 0;border-bottom:1px solid var(--line);font-size:12.5px}
.wb-pv-item b{display:block;color:var(--ink-faint);font-size:10px;font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:2px}
.wb-trail{position:relative;padding-left:14px;margin-top:4px}
.wb-trail::before{content:"";position:absolute;left:3px;top:4px;bottom:4px;width:1.5px;background:var(--line)}
.wb-trail div{position:relative;font-size:11px;color:var(--ink-soft);padding:3px 0}
.wb-trail div::before{content:"";position:absolute;left:-14px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.wb-demo-note{margin:10px 12px 0;background:rgba(125,180,255,.15);border:1px dashed rgba(125,180,255,.4);border-radius:10px;padding:9px 11px;font-size:10.5px;color:rgba(255,255,255,.75);line-height:1.6}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(22px)}
.reveal.in{opacity:1;transform:none;transition:opacity .55s cubic-bezier(.16,1,.3,1),transform .55s cubic-bezier(.16,1,.3,1)}
.reveal.d1{transition-delay:70ms}.reveal.d2{transition-delay:140ms}.reveal.d3{transition-delay:210ms}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .chat-fab{animation:none}
}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(3,1fr);gap:var(--sp-4) var(--sp-2)}
  .steps8{grid-template-columns:repeat(4,1fr);gap:14px 6px}
  .step8:nth-child(4)::after{display:none}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .team-grid{grid-template-columns:repeat(3,1fr)}
  .cert-grid{grid-template-columns:repeat(4,1fr)}
  .client-wall{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:920px){
  .menu{display:none}
  .hamburger{display:flex}
  .topbar .tb-right span.hide-m{display:none}
  .banner{height:auto;min-height:400px}
  .slide .s-inner{flex-direction:column;text-align:center;padding:44px var(--sp-4);gap:18px}
  .slide .s-art svg{width:min(240px,64%)}
  .slide p{margin:0 auto}
  .slide .s-btns{justify-content:center}
  .about-split{grid-template-columns:1fr}
  .pd-layout{grid-template-columns:1fr}
  .pd-gallery{position:static}
  .contact-layout{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .custom-grid{grid-template-columns:1fr 1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  body{font-size:14px}
  .section{padding:var(--sp-5) 0}
  .banner{border-radius:18px;min-height:460px}
  .cat-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .feat-grid{grid-template-columns:1fr}
  .proc-grid{grid-template-columns:1fr 1fr}
  .steps8{grid-template-columns:repeat(2,1fr)}
  .step8:nth-child(2n)::after{display:none}
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .news-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .client-wall{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr}
  .mini-facts{grid-template-columns:1fr}
  .article{padding:var(--sp-4) var(--sp-3)}
  .chat-win{right:12px;bottom:84px;height:calc(100vh - 110px)}
  .float-stack{right:14px;bottom:14px}
  .wb{grid-template-columns:1fr;grid-template-rows:auto auto 1fr}
  .wb-side{max-height:34vh}
  .wb-profile{display:none}
}

/* ===== 语言切换下拉（顶栏） ===== */
.lang-dd{position:relative;margin-left:6px}
.lang-btn{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.35);color:#fff;border-radius:99px;padding:3px 12px;font-size:11.5px;cursor:pointer;line-height:1.6;transition:background .15s}
.lang-btn:hover{background:rgba(255,255,255,.22)}
.lang-btn .caret{font-size:9px;opacity:.8}
.lang-menu{position:absolute;top:calc(100% + 8px);right:0;min-width:150px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 44px rgba(15,34,67,.22);padding:6px;display:none;z-index:1200}
.lang-dd.open .lang-menu{display:block}
.lang-dd .lang-opt{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:8px 12px;border-radius:8px;font-size:13px;color:#666;text-decoration:none;white-space:nowrap}
.lang-opt:hover{background:var(--accent-soft);color:var(--accent)}
.lang-opt .code{font-family:var(--mono);font-size:10px;color:var(--ink-faint)}
.lang-opt.on{background:var(--accent);color:#fff}
.lang-opt.on .code{color:rgba(255,255,255,.75)}
.lang-opt.on:hover{color:#fff}

/* ==== 图片位真实图片（AI 填充图，无图仍回退 SVG） ==== */
.s-art img{width:min(380px,80%);aspect-ratio:4/3;object-fit:cover;border-radius:14px;box-shadow:0 24px 40px rgba(0,0,0,.35)}
.cc-art img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.n-art img{width:100%;height:100%;object-fit:cover}
.about-visual .av-img{position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;display:block}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.cert-card .c-img{width:100%;height:92px;object-fit:cover;border-radius:8px;margin:0 auto 10px;display:block}
.p-card .p-img img{width:100%;height:100%;transition:transform .4s}
.p-card:hover .p-img img{transform:scale(1.05)}