:root{
  /* 浅色体系：近白底 + 深青主色 + 琥珀数据高亮 */
  --bg:#F7F9FA; --bg2:#FFFFFF; --panel:#FFFFFF; --line:#E2E8EC;
  --ink:#10202A; --ink2:#4A5A66; --ink3:#7C8B96;
  --brand:#160E59; --brand-d:#0D0838; --brand-t:#ECEBF6;
  --amber:#EB8235; --amber2:#C4681F; --teal:#0F6B4F; --red:#C0392B;
  --maxw:1180px;
  --sh:0 1px 2px rgba(16,32,42,.05), 0 8px 24px -12px rgba(16,32,42,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Arial,"Helvetica Neue",sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
section{padding:80px 0;border-top:1px solid var(--line)}
section:first-of-type{border-top:0}
h1,h2,h3,h4{line-height:1.16;margin:0 0 16px;font-weight:700;letter-spacing:-.022em;color:var(--ink)}
h1{font-size:clamp(30px,4.6vw,50px)}
h2{font-size:clamp(23px,3.1vw,34px)}
h3{font-size:19px}
p{margin:0 0 16px;color:var(--ink2)}
.lead{font-size:clamp(16px,1.55vw,18.5px);color:var(--ink2);max-width:64ch}
.kicker{font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--brand);
  font-weight:700;margin-bottom:16px}
.btn{display:inline-block;padding:13px 24px;border-radius:6px;font-weight:650;font-size:15px;
  background:var(--brand);color:#fff;border:1px solid var(--brand);cursor:pointer;transition:.18s}
.btn:hover{background:var(--brand-d);border-color:var(--brand-d)}
.btn.g{background:transparent;color:var(--brand);border-color:#C9C6DC}
.btn.g:hover{border-color:var(--brand);background:var(--brand-t)}
.btn.sm{padding:9px 16px;font-size:13.5px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 0}

/* nav */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:26px;height:68px}
.logo{display:flex;align-items:center;gap:7px;font-weight:800;font-size:19px;letter-spacing:-.025em;color:var(--ink)}
.logo svg{width:24px;height:24px}
.logo .logomark{width:38px;height:38px;object-fit:contain;flex:0 0 auto;margin-right:-2px}
.logo i{font-style:normal;color:var(--brand)}
.navlinks{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--ink2)}
.navlinks a:hover{color:var(--brand)}
.nav .btn{margin-left:8px}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;
  width:42px;height:38px;color:var(--ink);cursor:pointer;font-size:18px;line-height:1}
.mobmenu{display:none;flex-direction:column;gap:2px;padding:12px 22px 20px;background:#fff;border-bottom:1px solid var(--line)}
.mobmenu a{padding:12px 0;color:var(--ink2);border-bottom:1px solid var(--line);font-size:15.5px}
.mobmenu a:last-child{border-bottom:0}
.mobmenu.open{display:flex}

/* hero —— 静态分栏，不用轮播 */
/* ===== 首屏：全幅照片 + 靛蓝蒙版 + 巨型标题 ===== */
.hero{position:relative;min-height:min(88vh,860px);display:flex;flex-direction:column;
  justify-content:flex-end;border:0;padding:0;overflow:hidden;background:#0B0620}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 58%}
.hero-veil{position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(96deg,rgba(14,8,58,.97) 0%,rgba(16,10,66,.92) 34%,rgba(16,10,66,.55) 64%,rgba(16,10,66,.26) 100%),
    linear-gradient(180deg,rgba(8,4,28,.55) 0%,rgba(8,4,28,0) 26%,rgba(8,4,28,.82) 100%)}
.hero-inner{position:relative;z-index:2;padding-top:104px;padding-bottom:44px;width:100%}
.hero .kicker{color:var(--amber);letter-spacing:.2em}
.hero h1{color:#fff;font-size:clamp(32px,5.2vw,66px);line-height:1.04;letter-spacing:-.035em;
  max-width:17ch;margin-bottom:22px}
.hero .hl{color:var(--amber)}
.hero .h1sub{color:#E2DEF4;font-size:clamp(16.5px,2vw,21px);font-weight:600;letter-spacing:-.01em;
  max-width:38ch;margin:0 0 16px}
.hero .lead{color:rgba(255,255,255,.76);max-width:58ch;margin:0}
.hero .cta{margin-top:32px}
.hero .btn{background:var(--amber);border-color:var(--amber);color:#160E59;font-weight:700}
.hero .btn:hover{background:#F79B52;border-color:#F79B52}
.hero .btn.g{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.42);color:#fff}
.hero .btn.g:hover{background:rgba(255,255,255,.16);border-color:#fff}
.hero-kpis{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid rgba(255,255,255,.2);margin-top:44px}
.hero-kpis div{padding:26px 22px 30px;border-left:1px solid rgba(255,255,255,.13)}
.hero-kpis div:first-child{border-left:0}
.hero-kpis b{display:block;color:#fff;font-size:clamp(22px,2.6vw,34px);font-weight:800;
  letter-spacing:-.03em;line-height:1.1;margin-bottom:6px}
.hero-kpis span{color:rgba(255,255,255,.6);font-size:11px;letter-spacing:.1em;text-transform:uppercase}

/* trust strip */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:48px;position:relative;z-index:1}
.trust div{background:#fff;padding:22px 20px}
.trust b{display:block;font-size:clamp(21px,2.3vw,26px);font-weight:800;color:var(--brand);letter-spacing:-.025em}
.trust span{font-size:11.5px;color:var(--ink3);letter-spacing:.06em;text-transform:uppercase}

/* cards */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;
  display:flex;flex-direction:column;box-shadow:var(--sh);transition:.18s}
.card:hover{border-color:#C9C6DC;transform:translateY(-2px)}
.card .tag{align-self:flex-start;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;
  padding:5px 10px;border-radius:20px;background:var(--brand-t);color:var(--brand);margin-bottom:16px}
.card .tag.t{background:rgba(235,130,53,.14);color:var(--amber2)}
.card h3{margin-bottom:4px}
.card .w{font-size:13.5px;color:var(--ink3);margin-bottom:16px}
.card ul{list-style:none;margin:0 0 18px;padding:0;font-size:14.2px;color:var(--ink2)}
.card li{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid #EDEBF2}
.card li:last-child{border-bottom:0}
.card li b{color:var(--ink);font-weight:650;text-align:right;font-variant-numeric:tabular-nums}
.card .btn{margin-top:auto;text-align:center}

/* table */
.tw{overflow-x:auto;margin-top:34px;border:1px solid var(--line);border-radius:10px;background:#fff}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:680px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid #EDEBF2}
thead th{background:#F4F3F8;color:var(--ink);font-weight:700;font-size:12.5px;letter-spacing:.02em;
  position:sticky;top:0;border-bottom:1px solid var(--line)}
tbody th{color:var(--ink2);font-weight:500;background:#FBFAFC}
td{color:var(--ink2);font-variant-numeric:tabular-nums}
td b{color:var(--ink);font-weight:700}
tr:last-child td,tr:last-child th{border-bottom:0}
.hi{color:var(--amber2)!important;font-weight:700}
.warn{color:var(--red)!important;font-weight:650}
.ok{color:var(--teal)!important;font-weight:650}

/* callout */
.note{margin-top:24px;padding:18px 20px;border-left:3px solid var(--brand);background:var(--brand-t);
  border-radius:0 8px 8px 0;font-size:14.5px;color:var(--ink2)}
.note b{color:var(--ink)}
.note.t{border-left-color:var(--amber);background:#FDF6ED}
.note.r{border-left-color:var(--red);background:#FDF0EE}

/* proof */
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.shot{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;box-shadow:var(--sh)}
.shot img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.shot p,.shot figcaption{margin:0;padding:14px 16px;font-size:13px;color:var(--ink3)}
.certs{display:flex;flex-wrap:wrap;gap:9px;margin-top:28px}
.pill{font-size:12.5px;padding:8px 14px;border:1px solid var(--line);border-radius:20px;
  color:var(--ink2);background:#fff}
.pill b{color:var(--brand);font-weight:700}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px;box-shadow:var(--sh)}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);display:block;
  font-size:12px;font-weight:800;color:var(--brand);letter-spacing:.14em;margin-bottom:12px}
.step h4{font-size:15.5px;margin-bottom:8px}
.step p{font-size:13.5px;margin:0;color:var(--ink3)}

/* faq */
.faq{margin-top:28px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:0}
.faq summary{cursor:pointer;padding:18px 0;font-weight:650;font-size:15.5px;list-style:none;
  display:flex;gap:12px;align-items:flex-start;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--brand);font-weight:700;font-size:18px;line-height:1.3;flex:0 0 auto}
.faq details[open] summary::before{content:"–"}
.faq .a{padding:0 0 20px 30px;font-size:14.5px;color:var(--ink2);max-width:80ch}
.faq .a p{margin:0 0 10px}
.faq .a code,code{background:#EEEBF6;padding:2px 6px;border-radius:4px;font-size:13px;color:var(--brand-d)}

/* contact */
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:34px;align-items:start}
form{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;box-shadow:var(--sh)}
label{display:block;font-size:12.5px;color:var(--ink3);margin:0 0 6px;letter-spacing:.02em;font-weight:600}
input,select,textarea{width:100%;padding:11px 13px;margin-bottom:16px;background:#fff;color:var(--ink);
  border:1px solid #D6D3E0;border-radius:6px;font:inherit;font-size:14.5px;transition:.15s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(22,14,89,.12)}
textarea{min-height:100px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cinfo h3{margin-top:28px;font-size:16px}
.cinfo p{font-size:14.5px}
.cinfo a,a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.cinfo a:hover{color:var(--brand-d)}
.ok-msg{display:none;padding:14px 16px;border-radius:8px;background:#E9F5F1;
  border:1px solid #B7DFD3;color:var(--teal);font-size:14.5px;margin-bottom:16px}
.err-msg{display:none;padding:14px 16px;border-radius:8px;background:#FBEDEB;
  border:1px solid #F0C4BE;color:var(--red);font-size:14.5px;margin-bottom:16px}

/* footer */
footer{padding:52px 0 36px;border-top:1px solid var(--line);background:#FFFFFF}
.fbot{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;margin-top:24px;
  padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--ink3)}
.small{font-size:12.5px;color:var(--ink3);line-height:1.75}

@media(max-width:940px){
  .hero{min-height:auto}
  .hero-inner{padding-top:64px}
  .hero-kpis{grid-template-columns:repeat(2,1fr);margin-top:34px}
  .hero-kpis div:nth-child(3){border-left:0}
  .navlinks{display:none}.burger{display:block}
  .hgrid,.cgrid{grid-template-columns:1fr;gap:32px}
  .trust{grid-template-columns:repeat(2,1fr)}
  .grid3,.pgrid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  section{padding:58px 0}
  .hero{padding:52px 0 48px}
}
@media(max-width:520px){
  .hero-kpis{grid-template-columns:1fr}
  .hero-kpis div{border-left:0}
  .trust,.steps{grid-template-columns:1fr}
  .row2{grid-template-columns:1fr}
}

/* 联系区 WhatsApp 按钮 */
.wabtn{display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border-radius:6px;
  background:#25D366;color:#08281a!important;font-weight:700;font-size:14.5px;
  text-decoration:none;border:1px solid #1FB855;transition:.15s}
.wabtn:hover{background:#1FBE5B;border-color:#18A64B;transform:translateY(-1px)}
.wabtn svg{flex:0 0 auto}

/* 浮动 WhatsApp 按钮 */
.wafloat{position:fixed;right:22px;bottom:22px;z-index:70;width:56px;height:56px;border-radius:50%;
  background:#25D366;display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 6px 20px rgba(10,40,26,.28);transition:.18s}
.wafloat:hover{background:#1FBE5B;transform:scale(1.06)}
.wafloat svg{width:30px;height:30px;fill:#fff}
@media(max-width:520px){.wafloat{right:14px;bottom:14px;width:50px;height:50px}
  .wafloat svg{width:27px;height:27px}}

/* 产品图：固定高度，模组按真实比例缩放，卡片高度一致 */
.card .pimg{margin:0 0 18px;border-radius:8px;background:#F4F3F8;height:270px;
  display:flex;align-items:center;justify-content:center;padding:14px;overflow:hidden}
.card .pimg img{height:100%;width:auto;max-width:100%;object-fit:contain;display:block}

/* 两列图组 */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}
@media(max-width:940px){.grid2{grid-template-columns:1fr}}
.shot figcaption b{display:block;color:var(--ink);font-weight:650;margin-bottom:5px;font-size:13.5px}

/* 合并行标记：三款通用的行 */
.allfmt{display:inline-block;margin-left:10px;padding:2px 9px;border-radius:10px;
  background:var(--brand-t);color:var(--brand);font-size:10px;letter-spacing:.06em;
  text-transform:uppercase;font-weight:700;vertical-align:middle;white-space:nowrap}
/* 产品卡：详情链接 */
.card .more{display:block;margin-top:10px;font-size:13px;color:var(--brand);text-decoration:none;font-weight:600}
.card .more:hover{text-decoration:underline}
.card .btn.sm{margin-top:auto;text-align:center}
.card ul{margin-bottom:16px}

/* ===== 窄屏：规格表改为竖排（每行一个参数，三个版型上下排） ===== */
@media(max-width:640px){
  .tw.multi{overflow-x:visible;border:0;background:transparent}
  .tw.multi table{min-width:0;width:100%;font-size:14px}
  .tw.multi thead{display:none}
  .tw.multi tbody{display:block}
  .tw.multi tr{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;
    padding:12px 14px;margin-bottom:10px}
  .tw.multi th,.tw.multi td{display:block;border:0;padding:2px 0;text-align:left}
  .tw.multi tbody th{font-weight:700;color:var(--ink);background:none;font-size:14px;margin-bottom:6px}
  .tw.multi td{color:var(--ink2);padding-left:76px;position:relative;min-height:22px}
  .tw.multi td::before{position:absolute;left:0;top:2px;width:70px;font-size:11px;
    letter-spacing:.04em;text-transform:uppercase;color:var(--ink3);font-weight:700}
  .tw.multi td:nth-child(2)::before{content:"182R · 66"}
  .tw.multi td:nth-child(3)::before{content:"210 · 66"}
  .tw.multi td:nth-child(4)::before{content:"210R · 78"}
  .tw.multi td[colspan]::before{content:none}
  .tw.multi td[colspan]{padding-left:0}
  .tw.multi tr:last-child td,.tw.multi tr:last-child th{border-bottom:0}
}

/* 单列规格表（产品页用）：不强制宽度，移动端也两列并排 */
.tw.single table{min-width:0;width:100%;font-size:14.5px}
.tw.single thead th{padding:10px 14px}
.tw.single tbody th{width:44%;font-weight:600}
@media(max-width:640px){
  .tw.single tbody th{width:46%;font-size:13px}
  .tw.single td{font-size:13px;padding:10px 10px}
  .tw.single th{padding:10px 10px}
}