@font-face{font-family:"Inter";src:url("../fonts/inter-var.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Open Sans";src:url("../fonts/opensans-var.woff2") format("woff2");font-weight:300 800;font-display:swap}

:root{
  --white:#FFFFFF;
  --plate:#F2F3F4;
  --plate-2:#E9EBED;
  --ink:#0B0C0E;
  --ink-2:#2A2E34;
  --steel:#585E67;
  --steel-2:#7E848D;
  --line:#E1E4E7;
  --line-2:#EFF1F2;
  --signal:#D0451A;
  --signal-ink:#A83412;
  --signal-soft:#FBEDE7;
  --ok:#1E6B49;
  --warn:#8A5A22;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC",Arial,sans-serif;
  --mono:"Open Sans",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,sans-serif;   /* 数据/标签槽位：Open Sans（可读性优先） */
  --shell:1480px;
  --gut:clamp(20px,4.4vw,56px);
  --pad-y:clamp(60px,7vw,124px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--white);color:var(--ink-2);
  font-family:var(--sans);font-size:17px;line-height:1.68;font-weight:400;
  font-feature-settings:"kern" 1,"liga" 1;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.02;letter-spacing:-.028em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
button{font:inherit;color:inherit;cursor:pointer}
::selection{background:var(--ink);color:#fff}

.shell{max-width:var(--shell);margin:0 auto;padding:0 var(--gut)}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:500}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:99}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

/* ============ header ============ */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;gap:28px;height:78px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-logo{width:132px;height:auto;display:block}
.brand b{font-family:var(--sans);font-weight:800;font-size:19px;letter-spacing:.3em;line-height:1;color:var(--ink)}
.brand i{font-style:normal;font-family:var(--mono);font-size:10.5px;letter-spacing:.26em;color:var(--steel);text-transform:uppercase;padding-bottom:1px}
.nav{display:flex;align-items:center;gap:clamp(16px,2.1vw,34px)}
.nav a{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);
  position:relative;padding:9px 0;white-space:nowrap;font-weight:500}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;background:var(--signal);transition:right .22s ease}
.nav a:hover::after,.nav a[aria-current="page"]::after{right:0}
.hdr-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.burger{display:none;width:46px;height:46px;border:1px solid var(--line);background:transparent;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;background:var(--ink);color:#fff;
  border:1px solid var(--ink);padding:0 26px;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  font-weight:500;border-radius:0;transition:background .18s,border-color .18s,color .18s}
.btn:hover{background:var(--signal);border-color:var(--signal)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink);background:transparent;color:var(--ink)}
.btn.sm{min-height:44px;padding:0 18px;font-size:10.5px}
.btn .arw{transition:transform .18s}
.btn:hover .arw{transform:translateX(3px)}

/* ============ sections ============ */
.sec{padding:var(--pad-y) 0;border-top:1px solid var(--line)}
.sec-head{display:grid;grid-template-columns:132px minmax(0,1fr);gap:clamp(20px,3.4vw,56px);align-items:start;margin-bottom:clamp(30px,4vw,60px)}
.sec-no{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--signal-ink);text-transform:uppercase;padding-top:12px;font-weight:600}
.sec-no span{display:block;color:var(--steel-2);letter-spacing:.11em;margin-top:6px;font-size:10.5px;font-weight:500}
.sec-title{font-size:clamp(30px,4vw,58px);line-height:1;letter-spacing:-.032em;max-width:22ch;text-wrap:balance}
.sec-title em{font-style:normal;color:var(--signal-ink)}
.sec-sub{margin-top:18px;max-width:62ch;color:var(--steel);font-size:16.5px;line-height:1.62}
.sec-link{margin-top:16px;display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;letter-spacing:.05em;
  text-transform:uppercase;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:4px;font-weight:500}
.sec-link:hover{border-color:var(--signal);color:var(--signal-ink)}

/* ============ hero ============ */
.hero{padding:clamp(30px,3.8vw,56px) 0 clamp(28px,3.6vw,52px);background:var(--white)}
.hero--banner{position:relative;min-height:clamp(520px,74vh,800px);display:flex;flex-direction:column;justify-content:flex-end;
  background:var(--ink);overflow:hidden;padding:0}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 55%}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(94deg,rgba(11,12,14,.94) 0%,rgba(11,12,14,.86) 34%,rgba(11,12,14,.52) 62%,rgba(11,12,14,.12) 100%)}
.hero-in{position:relative;z-index:2;width:100%;padding-top:clamp(46px,7vw,96px);padding-bottom:clamp(30px,3.4vw,52px)}
.hero--banner .eyebrow{color:#C9CDD3}
.hero--banner h1{color:#fff}
.hero--banner .hero-lede{color:#C4C9CF}
.hero--banner .hero-note{color:#9AA0A8}
.hero--banner .btn{background:#fff;color:var(--ink);border-color:#fff}
.hero--banner .btn:hover{background:var(--signal);color:#fff;border-color:var(--signal)}
.hero--banner .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.hero--banner .btn.ghost:hover{border-color:#fff;background:transparent}
.hero-facts{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.16);background:rgba(11,12,14,.55)}
.hero-facts .shell{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.hero-facts div{padding:16px 22px 18px 0;border-right:1px solid rgba(255,255,255,.14)}
.hero-facts div+div{padding-left:22px}
.hero-facts div:last-child{border-right:0}
.hero-facts b{display:block;font-family:var(--mono);font-size:clamp(20px,2.2vw,30px);font-weight:600;color:#fff;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;white-space:nowrap}
.hero-facts .num-wrap{position:relative;display:inline-block;font-size:inherit;color:inherit;margin:0;line-height:1}
.num-ghost{color:transparent}   /* 占位但保留给读屏软件 */
.num{position:absolute;left:0;top:0;white-space:nowrap}
.hero-facts i{font-style:normal;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;color:#E9835F;text-transform:uppercase;margin-left:5px}
.hero-facts .lbl{display:block;margin-top:8px;font-family:var(--mono);font-size:10px;letter-spacing:.05em;color:#9AA0A8;text-transform:uppercase;line-height:1.45}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);gap:clamp(28px,4.4vw,72px);align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  text-transform:uppercase;color:var(--steel);font-weight:500}
.eyebrow::before{content:"";width:30px;height:2px;background:var(--signal)}
.hero h1{font-size:clamp(36px,4.5vw,68px);line-height:1;letter-spacing:-.035em;margin:20px 0 0;text-wrap:balance;font-weight:700}
.hero h1 em{font-style:normal;color:var(--signal-ink)}
.hero-lede{margin-top:24px;max-width:46ch;font-size:18px;line-height:1.6;color:var(--steel)}
.hero-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-note{margin-top:18px;font-family:var(--mono);font-size:12px;letter-spacing:.09em;color:var(--steel-2);text-transform:uppercase}

.hero-media{position:relative;background:#fff;border:1px solid var(--line);padding:0}
.hero-figure img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
.hero-chip{position:absolute;left:0;top:0;background:var(--ink);color:#fff;padding:9px 14px;font-family:var(--mono);
  font-size:10px;letter-spacing:.12em;text-transform:uppercase;z-index:2}
.hero-spec{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);background:var(--white)}
.hero-spec div{padding:14px 16px;border-right:1px solid var(--line)}
.hero-spec div:last-child{border-right:0}
.hero-spec span{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel-2)}
.hero-spec b{display:block;margin-top:5px;font-family:var(--mono);font-size:13.5px;font-weight:500;color:var(--ink);letter-spacing:-.01em}
.dim{position:absolute;font-family:var(--mono);font-size:11px;letter-spacing:.05em;color:var(--steel);text-transform:uppercase}
.dim.h{left:8%;right:8%;bottom:10px;text-align:center}
.dim.h::before{content:"";position:absolute;left:0;right:0;top:-9px;height:1px;background:#C8CCD1}
.dim.h::after{content:"";position:absolute;left:0;top:-13px;width:1px;height:9px;background:#C8CCD1}
.dim.h span{background:#fff;padding:0 9px;position:relative}
.hero-figure{position:relative;margin:0;padding:clamp(14px,1.8vw,26px) clamp(14px,1.8vw,26px) clamp(32px,2.6vw,40px)}

/* ============ stat band (dark) ============ */
.strip{background:var(--ink);color:#fff}
.strip-in{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.strip-cell{padding:clamp(26px,3vw,40px) clamp(16px,2.2vw,32px);border-right:1px solid rgba(255,255,255,.12)}
.strip-cell:last-child{border-right:0}
.strip-cell b{display:block;font-family:var(--mono);font-size:clamp(30px,3.6vw,50px);font-weight:500;line-height:1;
  letter-spacing:-.03em;color:#fff;font-variant-numeric:tabular-nums}
.strip-cell i{font-style:normal;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:#E9835F;text-transform:uppercase;margin-left:6px}
.strip-cell span{display:block;margin-top:12px;font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:#9AA0A8;text-transform:uppercase;line-height:1.55}

/* ============ product cards ============ */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.chip{background:var(--white);border:1px solid var(--line);border-radius:0;min-height:44px;padding:0 18px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-2);transition:.15s;font-weight:500}
.chip:hover{border-color:var(--ink)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fff}

.grid-prod{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,1.6vw,22px)}
.card{background:var(--white);border:1px solid var(--line);display:flex;flex-direction:column;transition:border-color .18s}
.card:hover{border-color:var(--ink)}
.card-media{position:relative;display:block;background:#fff;aspect-ratio:3/2;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:contain;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.025)}
.card-tag{position:absolute;left:0;top:0;background:rgba(11,12,14,.86);color:#fff;padding:6px 10px;font-family:var(--mono);
  font-size:9.5px;letter-spacing:.11em;text-transform:uppercase}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:9px;flex:1}
.card-sku{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--signal-ink);text-transform:uppercase;font-weight:600}
.card-name{font-size:22px;line-height:1.15;letter-spacing:-.025em}
.card-desc{font-size:14px;color:var(--steel);line-height:1.58}
.card-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line-2)}
.card-specs div{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--steel-2);text-transform:uppercase;line-height:1.35}
.card-specs b{display:block;font-family:var(--mono);font-size:13px;color:var(--ink);letter-spacing:-.01em;text-transform:none;margin-bottom:3px;font-weight:500}

/* ============ viz ============ */
.viz{background:var(--white);border:1px solid var(--line);padding:clamp(18px,2.6vw,34px)}
.viz-row{display:grid;grid-template-columns:82px minmax(0,1fr) 104px 86px;gap:clamp(10px,1.6vw,22px);align-items:center;
  padding:14px 0;border-bottom:1px solid var(--line-2)}
.viz-row:last-child{border-bottom:0}
.viz-k{font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;color:var(--ink);font-weight:500}
.viz-bar{height:18px;background:var(--plate);position:relative}
.viz-bar i{position:absolute;left:0;top:0;bottom:0;background:var(--ink)}
.viz-bar i.sig{background:var(--signal)}
.viz-v{font-family:var(--mono);font-size:13px;text-align:right;color:var(--ink);font-variant-numeric:tabular-nums;font-weight:500}
.viz-w{font-family:var(--mono);font-size:12.5px;text-align:right;color:var(--steel);font-variant-numeric:tabular-nums}
.viz-legend{display:flex;gap:20px;flex-wrap:wrap;margin-top:18px;font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--steel);text-transform:uppercase}
.viz-legend i{display:inline-block;width:10px;height:10px;background:var(--ink);margin-right:7px;vertical-align:middle}
.viz-legend i.sig{background:var(--signal)}

/* ============ tables ============ */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;background:var(--white);border:1px solid var(--line)}
table.tbl{min-width:640px;font-size:14px}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line-2);vertical-align:top}
.tbl thead th{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);
  font-weight:600;background:var(--plate);border-bottom:1px solid var(--line);white-space:nowrap}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl td.n{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap;font-size:13px}
.tbl .sku{font-family:var(--mono);font-size:12px;letter-spacing:.04em;font-weight:500;color:var(--ink)}
.tbl .best{color:var(--signal-ink);font-weight:700}
.tbl .tick{color:#177046;font-weight:700;font-size:14px}
.tbl tr:hover td{background:#FAFBFC}
.tbl--cmp{font-size:12.5px}
.tbl--cmp th,.tbl--cmp td{padding:10px 12px}
.tbl--cmp td.n{font-size:12px;white-space:normal}
.tbl--cmp td{vertical-align:top}

/* ============ calculator ============ */
.calc{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);border:1px solid var(--ink)}
.calc-form{background:var(--white);padding:clamp(20px,2.6vw,34px)}
.calc-out{background:var(--ink);color:#fff;padding:clamp(20px,2.6vw,34px);display:flex;flex-direction:column;justify-content:center;gap:15px;min-width:0}
.field{margin-bottom:16px}
.field label{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin-bottom:7px;font-weight:500}
.field select,.field input,.field textarea{width:100%;background:var(--white);border:1px solid var(--line);border-radius:0;
  padding:13px 14px;font-family:var(--sans);font-size:16px;color:var(--ink);appearance:none;min-height:50px}
.field select{font-family:var(--mono);font-size:14px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.field input[readonly]{background:var(--plate);color:var(--steel)}
.inline-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.calc-line{display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap;
  border-bottom:1px solid rgba(255,255,255,.14);padding-bottom:10px}
.calc-line span{font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;color:#9AA0A8}
.calc-line b{font-family:var(--mono);font-size:16px;font-variant-numeric:tabular-nums;font-weight:500;text-align:right;min-width:0;overflow-wrap:anywhere}
.calc-big{font-family:var(--mono);font-size:clamp(34px,4.4vw,54px);line-height:1;color:#fff;letter-spacing:-.03em;font-weight:500}
.calc-big small{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:#9AA0A8;display:block;margin-top:10px;text-transform:uppercase;font-weight:500}
.calc-note{font-size:13px;color:#9AA0A8;line-height:1.6}

/* ============ cert chips ============ */
.cert-chips{display:flex;flex-wrap:wrap;gap:7px}
.cert{display:inline-flex;align-items:center;font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;text-transform:uppercase;
  border:1px solid var(--line);padding:6px 9px;background:var(--white);color:var(--ink-2);white-space:nowrap;font-weight:500}
.cert.ok{border-color:#BFD6C8;background:#F2F7F4;color:var(--ok)}
.cert.pend{border-color:#E4CFB8;background:#FDF5EB;color:var(--warn)}
.cert.no{color:var(--steel-2);border-style:dashed}

/* ============ factory ============ */
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(8px,1vw,12px)}
.fact{position:relative;overflow:hidden;background:var(--plate)}
.fact img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease}
.fact:hover img{transform:scale(1.035)}
.fact figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 14px 11px;
  background:linear-gradient(to top,rgba(11,12,14,.78),rgba(11,12,14,0));color:#fff;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase}
.fact.wide{grid-column:span 2}
.fact.wide img{aspect-ratio:8/3}

.scale{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.scale>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;filter:grayscale(1) contrast(1.05)}
.scale::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(96deg,rgba(11,12,14,.96) 0%,rgba(11,12,14,.9) 46%,rgba(11,12,14,.45) 80%,rgba(11,12,14,.3) 100%)}
.scale-in{position:relative;z-index:2;padding-top:clamp(56px,7vw,112px);padding-bottom:clamp(56px,7vw,112px)}
.scale h2{color:#fff;font-size:clamp(30px,4.2vw,58px);line-height:1;letter-spacing:-.032em;max-width:20ch}
.scale h2 em{font-style:normal;color:#F09A72}
.scale p{color:#C5C9CE;margin-top:18px;max-width:52ch;font-size:16.5px}
.scale-nums{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:clamp(34px,4vw,56px);border-top:1px solid rgba(255,255,255,.22)}
.scale-nums div{padding:22px 26px 4px 0;border-right:1px solid rgba(255,255,255,.14)}
.scale-nums div:last-child{border-right:0}
.scale-nums div+div{padding-left:26px}
.scale-nums b{display:block;font-family:var(--sans);font-size:clamp(19px,2.1vw,27px);font-weight:600;letter-spacing:-.03em;line-height:1.1;color:#fff}
.scale-nums span{display:block;margin-bottom:10px;font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#9AA0A8}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.step{background:var(--white);padding:clamp(20px,2.2vw,28px);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.step b{display:block;font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:var(--signal-ink);margin-bottom:12px;font-weight:600}
.step h4{font-size:17px;font-weight:600;margin-bottom:7px;letter-spacing:-.02em}
.step p{font-size:14px;color:var(--steel);line-height:1.6}

/* ============ PDP ============ */
.pdp-top{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,3.6vw,58px);align-items:start;
  padding-top:clamp(24px,3.4vw,46px);padding-bottom:clamp(30px,3.8vw,54px)}
.gal-main{background:#fff;border:1px solid var(--line);aspect-ratio:3/2;position:relative;overflow:hidden}
.gal-main img{width:100%;height:100%;object-fit:contain}
.gal-thumbs{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.gal-thumbs button{background:#fff;border:1px solid var(--line);padding:0;width:74px;height:74px;flex:0 0 74px;overflow:hidden;transition:border-color .15s}
.gal-thumbs button[aria-current="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.gal-thumbs img{width:100%;height:100%;object-fit:cover}
.gal-thumbs button.is-video{position:relative}
.gal-thumbs button.is-video::after{content:"▶";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(11,12,14,.58);color:#fff;font-size:13px}
.video-jump{display:inline-flex;align-items:center;gap:8px;margin-top:14px;font-family:var(--mono);font-size:12px;
  letter-spacing:.11em;text-transform:uppercase;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:2px;font-weight:500}
.video-jump:hover{color:var(--signal-ink);border-color:var(--signal)}

.pdp-info .sku-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pdp-info h1{font-size:clamp(30px,3.6vw,48px);line-height:1.02;margin:14px 0 0;letter-spacing:-.03em}
.pdp-lede{margin-top:16px;color:var(--steel);font-size:16.5px;max-width:52ch;line-height:1.6}
.key-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:26px}
.key-cell{background:var(--white);padding:15px 17px}
.key-cell span{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel-2)}
.key-cell b{display:block;margin-top:6px;font-family:var(--mono);font-size:15px;font-weight:500;letter-spacing:-.01em;color:var(--ink)}
.pdp-act{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

.subnav{position:sticky;top:78px;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.subnav-in{display:flex;gap:clamp(14px,2.2vw,30px);overflow-x:auto;scrollbar-width:none}
.subnav-in::-webkit-scrollbar{display:none}
.subnav a{font-family:var(--mono);font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--steel);
  padding:15px 0;white-space:nowrap;border-bottom:2px solid transparent;font-weight:500}
.subnav a:hover{color:var(--ink);border-color:var(--signal)}

.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2.4vw,34px)}
.spec-block{background:var(--white);border:1px solid var(--line)}
.spec-block h4{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);
  padding:14px 18px;border-bottom:1px solid var(--line);background:var(--plate);font-weight:600}
.spec-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);gap:14px;padding:12px 18px;border-bottom:1px solid var(--line-2);font-size:14px}
.spec-row:last-child{border-bottom:0}
.spec-row dt{color:var(--steel)}
.spec-row dd{margin:0;font-family:var(--mono);font-size:13px;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}

.opt-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.opt{background:var(--white);border:1px solid var(--line);padding:18px}
.opt span{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel-2)}
.opt b{display:block;margin-top:9px;font-family:var(--mono);font-size:14px;font-weight:500;color:var(--ink)}
.opt b.std{color:var(--signal-ink)}
.opt b.na{color:var(--steel-2);font-weight:400}

.ftiles{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ftile{background:var(--white);padding:22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.ftile b{display:block;font-family:var(--mono);font-size:clamp(20px,2.2vw,27px);font-weight:500;line-height:1;letter-spacing:-.03em;color:var(--ink)}
.ftile span{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin-top:9px}

.feat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(16px,2.4vw,34px)}
.feat{border-top:2px solid var(--ink);padding-top:16px}
.feat h4{font-size:20px;font-weight:600;margin-bottom:8px;letter-spacing:-.025em}
.feat p{font-size:14.5px;color:var(--steel);line-height:1.62}

.video-block{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);border:1px solid var(--line);background:var(--white)}
.video-frame{position:relative;background:#fff;aspect-ratio:16/9;overflow:hidden;border-right:1px solid var(--line)}
.video-frame video{width:100%;height:100%;object-fit:contain;background:#fff}
.video-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(11,12,14,.24);border:0;padding:0}
.video-play span{display:inline-flex;align-items:center;gap:12px;background:var(--white);color:var(--ink);
  min-height:56px;padding:0 26px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.video-info{padding:clamp(20px,2.4vw,32px);display:flex;flex-direction:column;justify-content:center;gap:12px;border-left:1px solid var(--line)}
.video-info h4{font-size:19px;letter-spacing:-.02em}
.video-info p{font-size:14px;color:var(--steel);line-height:1.6}
.video-meta{display:flex;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;letter-spacing:.05em;
  text-transform:uppercase;color:var(--steel-2);padding-top:6px}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:24px;align-items:baseline;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);letter-spacing:-.015em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:18px;color:var(--signal-ink);flex:0 0 auto;font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq p{padding:0 0 24px;max-width:76ch;color:var(--steel);font-size:15.5px}

/* ============ CTA ============ */
.cta{background:var(--ink);color:#fff;padding:clamp(52px,6.4vw,104px) 0}
.cta-in{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(24px,3.4vw,60px);align-items:end}
.cta h2{font-size:clamp(32px,4.4vw,62px);line-height:1;letter-spacing:-.034em;color:#fff}
.cta h2 em{font-style:normal;color:#F09A72}
.cta p{margin-top:18px;color:#B9BEC5;max-width:50ch;font-size:16px}
.cta .btn{background:#fff;color:var(--ink);border-color:#fff;min-height:56px}
.cta .btn:hover{background:var(--signal);color:#fff;border-color:var(--signal)}
.cta .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.36)}
.cta .btn.ghost:hover{border-color:#fff;background:transparent}
.cta-act{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ============ footer ============ */
.ft{background:var(--ink);color:#C5C9CE;padding:clamp(40px,4.6vw,66px) 0 28px;border-top:1px solid rgba(255,255,255,.1)}
.ft-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:clamp(20px,3vw,44px)}
.ft h5{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:#8E959D;margin:0 0 14px;font-weight:600}
.ft li{margin-bottom:9px}
.ft a{font-size:14px;color:#C5C9CE}
.ft a:hover{color:#fff}
.ft-logo{width:124px;height:auto;display:block}
.ft-brand p{margin-top:12px;font-size:13.5px;color:#8E959D;line-height:1.6;max-width:36ch}
.ft-bot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:clamp(30px,3.4vw,48px);
  padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-family:var(--mono);font-size:11px;letter-spacing:.07em;
  color:#7C838B;text-transform:uppercase}
.ft-legal{display:flex;gap:14px}
.ft-legal a{border-bottom:1px solid rgba(255,255,255,.28);padding-bottom:1px}
.ft-legal a:hover{border-color:#fff}

/* ============ forms ============ */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.form-grid textarea{min-height:104px;resize:vertical}
.req{color:var(--signal)}
.form-note{font-size:12.5px;color:var(--steel-2);margin-top:14px;line-height:1.6}
.form-note a{border-bottom:1px solid var(--line)}
.form-ok{border:1px solid #BFD6C8;background:#F2F7F4;color:var(--ok);padding:13px 16px;font-size:13.5px;margin-top:16px;display:none}

/* 蜜罐：真人看不见，机器人会填 */
.hp{position:absolute!important;left:-9999px!important;top:auto!important;width:1px;height:1px;overflow:hidden}
.form-err{display:none;border:1px solid #E3B4A8;background:#FBF1EE;color:#8E3A22;
  padding:13px 16px;font-size:13.5px;margin-top:16px;line-height:1.6}
.form-err a{border-bottom:1px solid currentColor;font-weight:600}
.btn[disabled]{opacity:.55;cursor:default;pointer-events:none}

/* ============ misc ============ */
.crumb{font-family:var(--mono);font-size:11.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--steel-2);padding:20px 0 0}
.crumb a:hover{color:var(--signal-ink)}
.crumb span{margin:0 8px;color:var(--line)}
.pill{font-family:var(--mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;border:1px solid var(--line);
  padding:6px 11px;color:var(--ink-2);background:var(--white);font-weight:500}
.note{background:var(--plate);border-left:3px solid var(--signal);padding:18px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.65}
.note a{border-bottom:1px solid #C8CCD1}
.prose{max-width:68ch;font-size:17px;color:var(--ink-2);line-height:1.7}
.prose h2{font-size:clamp(24px,2.6vw,32px);margin:38px 0 12px;letter-spacing:-.028em}
.prose h3{font-size:18px;margin:28px 0 10px;letter-spacing:-.02em}
.prose p{margin-bottom:15px}
.prose ul{margin:0 0 18px}
.prose li{position:relative;padding-left:20px;margin-bottom:9px}
.prose li::before{content:"";position:absolute;left:0;top:12px;width:8px;height:2px;background:var(--signal)}
.prose .note{margin:18px 0}
.prose .mono{text-transform:none;font-size:.9em;letter-spacing:.02em;color:var(--ink);background:var(--plate);padding:1px 6px}
.prose .mono{text-transform:none;font-size:.9em;letter-spacing:.02em;color:var(--ink);background:var(--plate);padding:1px 6px}
.prose a{border-bottom:1px solid var(--line);color:var(--ink)}
.prose a:hover{border-color:var(--signal);color:var(--signal-ink)}
.mt-l{margin-top:clamp(28px,3.4vw,48px)}
.mt-m{margin-top:22px}
.center{text-align:center}
.hide{display:none !important}
.doc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(12px,1.6vw,20px)}
.doc{background:var(--white);border:1px solid var(--line);padding:22px;position:relative}
.doc-n{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--signal-ink);margin-bottom:10px;font-weight:600}
.doc h4{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.35;letter-spacing:-.02em}
.doc p{font-size:13.5px;color:var(--steel);line-height:1.6}
.doc-scan{display:inline-block;margin-top:12px;font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;
  text-transform:uppercase;color:var(--steel-2);border:1px dashed var(--line);padding:5px 9px}

/* ============ video ============ */
.video-jump{display:inline-flex;align-items:center;gap:10px;margin-top:16px;background:var(--ink);color:#fff;
  padding:13px 20px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:600;
  transition:background .18s}
.video-jump:hover{background:var(--signal)}
.card-film{position:absolute;right:10px;bottom:10px;background:#fff;border:1px solid var(--line);padding:5px 9px;
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);font-weight:600}
.video-playbtn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;
  align-items:center;gap:14px;z-index:3;color:#fff;background:transparent;border:0;padding:0;cursor:pointer;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase}
.video-playbtn span{background:rgba(11,12,14,.62);padding:8px 14px;backdrop-filter:blur(3px)}
.video-playbtn em{font-style:normal;display:inline-flex;align-items:center;justify-content:center;width:70px;height:70px;
  background:#fff;color:var(--ink);border-radius:50%;font-size:20px;box-shadow:0 12px 34px rgba(11,12,14,.32)}
.video-frame.is-playing .video-playbtn{display:none}

/* ============ accessories ============ */
.acc-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.acc-head h4{font-size:18px;letter-spacing:-.02em}
.acc-head span{font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:var(--steel)}
.acc-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:1px solid var(--line);
  border-left:1px solid var(--line);margin-top:16px}
.acc-grid li{display:flex;align-items:baseline;gap:10px;padding:15px 16px;border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink-2);line-height:1.35}
.acc-grid li span{font-family:var(--mono);font-size:11px;color:var(--steel-2);letter-spacing:.04em;flex:0 0 auto}

/* ============ header icon + search + whatsapp ============ */
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;flex:0 0 44px;
  background:transparent;border:1px solid var(--line);color:var(--ink);transition:border-color .18s,background .18s}
.icon-btn:hover{border-color:var(--ink)}
.icon-btn svg{width:18px;height:18px}

.search[hidden]{display:none}
.search{position:fixed;inset:0;z-index:120;background:rgba(11,12,14,.55);backdrop-filter:blur(4px);
  display:flex;align-items:flex-start;justify-content:center;padding:clamp(20px,6vh,80px) var(--gut)}
.search-in{width:100%;max-width:780px;background:#fff;border:1px solid var(--line);box-shadow:0 30px 80px rgba(11,12,14,.35)}
.search-bar{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--line)}
.search-bar svg{width:20px;height:20px;color:var(--steel);flex:0 0 20px}
.search-bar input{flex:1;border:0;outline:none;font-family:var(--sans);font-size:18px;color:var(--ink);background:transparent}
.search-bar input::placeholder{color:var(--steel-2)}
.search-close{border:1px solid var(--line);background:#fff;padding:6px 10px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.06em;text-transform:uppercase;color:var(--steel)}
.search-res{max-height:min(56vh,460px);overflow-y:auto}
.search-item{display:block;padding:14px 18px;border-bottom:1px solid var(--line-2)}
.search-item:hover,.search-item.is-sel{background:var(--plate)}
.search-item b{display:block;font-size:15px;font-weight:600;color:var(--ink);letter-spacing:-.015em}
.search-item span{display:block;margin-top:3px;font-family:var(--mono);font-size:11px;color:var(--steel);letter-spacing:.04em}
.search-item em{font-style:normal;font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--signal-ink);border:1px solid var(--line);padding:2px 6px;margin-right:8px;vertical-align:2px}
.search-empty{padding:26px 18px;color:var(--steel);font-size:14px}
.search-hint{margin:0;padding:12px 18px;border-top:1px solid var(--line);font-family:var(--mono);font-size:10.5px;
  letter-spacing:.05em;color:var(--steel-2)}

.wa-float{position:fixed;right:22px;bottom:22px;z-index:110;display:inline-flex;align-items:center;gap:10px;
  background:#1FAA5E;color:#fff;height:56px;padding:0 20px 0 16px;border-radius:999px;
  box-shadow:0 14px 34px rgba(11,12,14,.26);font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;
  text-transform:uppercase;font-weight:600;transition:transform .18s,box-shadow .18s}
.wa-float:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(11,12,14,.32)}
.wa-float svg{width:24px;height:24px;flex:0 0 24px}
body.no-scroll{overflow:hidden}

@media (max-width:960px){
  .wa-float span{display:none}
  .wa-float{width:56px;padding:0;justify-content:center;right:16px;bottom:16px}
  .hdr-cta{gap:8px}
  .icon-btn{width:42px;height:42px;flex-basis:42px}
}

/* ============ responsive ============ */
@media (max-width:1180px){
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero--banner{min-height:clamp(460px,62vh,640px)}
  .hero-facts .shell{grid-template-columns:1fr 1fr}
  .hero-facts div:nth-child(2n){border-right:0}
  .hero-facts div{border-bottom:1px solid rgba(255,255,255,.12);padding:14px 16px 16px 0}
  .hero-facts div+div{padding-left:16px}
  .hero-facts div:nth-child(odd){padding-left:0}
  .hero-media{max-width:680px}
  .grid-prod{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec-head{grid-template-columns:104px minmax(0,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
  .pdp-top{grid-template-columns:1fr}
  .calc{grid-template-columns:1fr}
  .cta-in{grid-template-columns:1fr}
  .cta-act{justify-content:flex-start}
  .fact-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .scale-nums{grid-template-columns:repeat(2,1fr)}
  .video-block{grid-template-columns:1fr}
  .video-info{border-left:0;border-top:1px solid var(--line)}
}
@media (max-width:960px){
  .nav{display:none}
  .burger{display:flex}
  .hdr.menu-open .nav{display:flex;position:absolute;left:0;right:0;top:78px;background:#fff;flex-direction:column;
    align-items:flex-start;padding:14px var(--gut) 24px;border-bottom:1px solid var(--line);gap:2px}
  .hdr.menu-open .nav a{padding:14px 0;font-size:12px;width:100%;border-top:1px solid var(--line-2)}
  .hdr-cta .btn{display:none}
  .strip-in{grid-template-columns:1fr 1fr}
  .strip-cell{border-bottom:1px solid rgba(255,255,255,.12)}
  .specs{grid-template-columns:1fr}
  .opt-grid{grid-template-columns:1fr 1fr}
  .ftiles{grid-template-columns:1fr 1fr}
  .gal-thumbs button{width:64px;height:64px;flex-basis:64px}
}
@media (max-width:760px){
  body{font-size:16px;line-height:1.65}
  .sec-head{grid-template-columns:1fr;gap:14px}
  .sec-no{padding-top:0}
  .sec-title{max-width:none}
  .grid-prod{grid-template-columns:1fr}
  .viz-row{grid-template-columns:60px minmax(0,1fr) 70px;gap:10px}
  .viz-w{display:none}
  .feat-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .inline-2{grid-template-columns:1fr}
  .dim.h{font-size:9px}
  .ft-grid{grid-template-columns:1fr}
  .tbl th,.tbl td{padding:11px}
  .hero-spec{grid-template-columns:1fr 1fr}
  .hero-spec div:nth-child(2){border-right:0}
  .hero-spec div:nth-child(3){border-top:1px solid var(--line);grid-column:1/-1}
  .doc-grid{grid-template-columns:1fr}
  .scale-nums{grid-template-columns:1fr 1fr}
  .acc-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .hero-inset{right:10px;bottom:-16px;width:min(76%,300px)}
}
@media (max-width:430px){
  .hero h1{font-size:clamp(32px,9.6vw,42px)}
  .hero-lede{font-size:16.5px}
  .key-grid{grid-template-columns:1fr}
  .opt-grid{grid-template-columns:1fr}
  .gal-thumbs button{width:56px;height:56px;flex-basis:56px}
  .btn{padding:0 18px}
  .hero-chip{font-size:9px;padding:7px 10px}
  .ftiles{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}