@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-display:swap;src:url('assets/fonts/archivo-latin-ext.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Archivo';font-style:normal;font-weight:100 900;font-display:swap;src:url('assets/fonts/archivo-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Manrope';font-style:normal;font-weight:200 800;font-display:swap;src:url('assets/fonts/manrope-latin-ext.woff2') format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Manrope';font-style:normal;font-weight:200 800;font-display:swap;src:url('assets/fonts/manrope-latin.woff2') format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --ink:#172D2B; --ink-soft:#3C5550; --muted:#5E6E6A;
  --accent:#1E8E72; --accent-deep:#13624D; --accent-soft:#E3F1EC;
  --bg:#F6F5F1; --surface:#FFFFFF; --line:#E5E9E5;
  --maxw:1180px; --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:Archivo,Manrope,Arial,sans-serif;line-height:1.15;margin:0;letter-spacing:-.015em}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 18px}

/* nav */
.nav{position:sticky;top:0;z-index:60;background:rgba(246,245,241,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;gap:14px;height:64px}
.brand{display:flex;align-items:center;gap:9px;font-family:Archivo;font-weight:800;font-size:19px;letter-spacing:-.02em;text-decoration:none}
.brand svg{width:26px;height:26px;flex:0 0 auto}
.nav-right{display:flex;align-items:center;gap:8px}
.nav-links{display:none;gap:4px;align-items:center}
.nav-links a{padding:8px 12px;border-radius:9px;font-size:14.5px;font-weight:600;color:var(--ink-soft);text-decoration:none}
.nav-links a:hover{background:var(--accent-soft);color:var(--accent-deep)}
.nav-links a.is-active{background:var(--accent-soft);color:var(--accent-deep)}
.nav-cta{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:#fff;text-decoration:none;font-weight:700;font-size:14px;padding:10px 16px;border-radius:11px;white-space:nowrap}
.nav-cta:hover{background:var(--accent-deep)}
.nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;flex:0 0 auto}
.nav-toggle svg{width:20px;height:20px;color:var(--ink)}
/* 移动端展开的菜单 */
.nav-links.is-open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:2px;background:var(--surface);border-bottom:1px solid var(--line);padding:10px 14px 14px;box-shadow:0 16px 30px -20px rgba(19,98,77,.4)}
.nav-links.is-open a{padding:12px 14px;font-size:16px;border-radius:9px}
.nav-links.is-open a:hover{background:var(--accent-soft)}
.nav-links.is-open .nav-cta{justify-content:center;margin-top:6px}
@media(min-width:820px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
  .nav-links.is-open{position:static;flex-direction:row;background:transparent;border:0;padding:0;box-shadow:none}
}

/* hero */
.hero{padding:44px 0 20px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-deep);margin:0 0 14px}
h1{font-size:clamp(30px,6.2vw,54px);font-weight:800}
.lead{font-size:clamp(15.5px,2vw,18px);color:var(--ink-soft);max-width:62ch;margin:16px 0 0}
.hero-acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 20px;border-radius:12px;font-weight:700;font-size:15px;text-decoration:none;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep)}
.btn-ghost{border-color:#CBD6D0;color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent-deep)}
.hero-arm{display:grid;gap:8px;margin:12px 0 0;font-size:13px;color:var(--muted)}
.notebar{margin-top:22px;border-left:3px solid var(--accent);background:var(--accent-soft);padding:12px 16px;border-radius:0 10px 10px 0;font-size:14px;color:var(--ink-soft);max-width:70ch}
.hero-grid{display:grid;gap:26px}
@media(min-width:940px){.hero-grid{grid-template-columns:1.06fr .94fr;align-items:center}}
.hero-visual{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:0 30px 50px -40px rgba(19,98,77,.55)}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* stats */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:28px 0 0}
.stat{background:var(--surface);padding:16px 18px}
.stat b{display:block;font-family:Archivo;font-size:clamp(17px,2.4vw,21px);color:var(--accent-deep)}
.stat span{font-size:12.5px;color:var(--muted)}
@media(min-width:760px){.stats{grid-template-columns:repeat(3,1fr)}}

/* sections */
.sec{padding:44px 0 0}
.sec-head{margin-bottom:22px}
.sec-head h2{font-size:clamp(23px,3.4vw,32px);font-weight:800}
.sec-head p{margin:9px 0 0;color:var(--muted);max-width:66ch;font-size:15px}
.kicker{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0 0 9px}
.scene-row{margin:22px 0 0;font-size:14px;color:var(--ink-soft);font-weight:600}
.scene-row .kicker{display:block;margin-bottom:6px}

/* core cards */
.core{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:700px){.core{grid-template-columns:repeat(2,1fr)}.core .core-card.is-last{grid-column:span 2}}
@media(min-width:1020px){.core{grid-template-columns:repeat(3,1fr)}.core .core-card.is-last{grid-column:span 1}}
.core-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .2s,box-shadow .2s}
.core-card:hover{border-color:#CBE0D6;box-shadow:0 10px 24px -18px rgba(19,98,77,.45)}
.core-tag{position:absolute;margin:12px;background:#0E4A3A;color:#fff;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 9px;border-radius:7px}
.core-img{position:relative;background:#F1F2EE}
.core-img img{width:100%;aspect-ratio:1/1;object-fit:contain;background:#fff}
.core-body{padding:16px 17px 18px;display:flex;flex-direction:column;gap:12px;flex:1}
.core-body h3{font-size:18px;font-weight:700}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:600;color:var(--accent-deep);background:var(--accent-soft);padding:3px 8px;border-radius:6px;align-self:flex-start}
.specs{margin:0;display:grid;gap:7px;font-size:13px;color:var(--ink-soft)}
.specs div{display:flex;gap:8px;justify-content:space-between;border-bottom:1px dashed var(--line);padding-bottom:6px}
.specs dt{color:var(--muted);flex:0 0 auto}
.specs dd{margin:0;text-align:right;font-weight:600;color:var(--ink)}
.core-more{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--accent-deep);text-decoration:none;display:inline-flex;gap:6px;align-items:center}
.core-more:hover{color:var(--ink)}
.wa-mini{font-size:12.5px;font-weight:700;color:var(--accent-deep);text-decoration:none;white-space:nowrap}
.wa-mini:hover{color:var(--ink);text-decoration:underline}
.sup-name{font-weight:600;color:var(--ink)}
.sup-blurb{font-size:12px;color:var(--muted);margin-top:2px;max-width:260px;line-height:1.4}
.core-blurb{font-size:13.5px;line-height:1.55;color:var(--ink-soft);margin:8px 0 12px}
/* series cards */
.series-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:800px){.series-grid{grid-template-columns:repeat(3,1fr)}}
.series-card{position:relative;display:block;background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;text-decoration:none;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.series-card:hover{border-color:#CBE0D6;box-shadow:0 14px 30px -20px rgba(19,98,77,.5)}
.series-img{position:relative;background:#F1F2EE}
.series-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.series-tag{position:absolute;top:12px;left:12px;background:#0E4A3A;color:#fff;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 9px;border-radius:7px}
.series-body{padding:16px 18px 18px}
.series-body h3{font-size:18px;font-weight:700;margin:0 0 6px}
.series-body .series-blurb{font-size:13.5px;color:var(--ink-soft);line-height:1.55;margin:0 0 12px}
.series-models{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.series-models span{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11.5px;font-weight:600;color:var(--accent-deep);background:var(--accent-soft);padding:3px 8px;border-radius:6px}
.series-cta{font-size:13.5px;font-weight:700;color:var(--accent-deep);display:inline-flex;gap:6px;align-items:center}
.series-card:hover .series-cta{color:var(--ink)}

/* series detail */
.sd-hero{display:grid;gap:24px;margin-bottom:28px}
@media(min-width:900px){.sd-hero{grid-template-columns:1fr 1fr;align-items:center}}
.sd-hero img{border-radius:16px;border:1px solid var(--line);width:100%;aspect-ratio:4/3;object-fit:cover}
.sd-back{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--accent-deep);text-decoration:none;margin-bottom:16px}
.sd-back:hover{text-decoration:underline}
.sd-blurb{font-size:15px;color:var(--ink-soft);line-height:1.6;margin:12px 0 0}

/* SKU comparison table */
.cmp-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table.cmp{border-collapse:collapse;width:100%;min-width:600px;table-layout:auto;font-size:13.5px}
table.cmp th,table.cmp td{padding:13px 16px;border-bottom:1px solid #F1F3F0;text-align:left}
table.cmp thead th{background:#EFF4F0;font-size:12px;letter-spacing:.05em;text-transform:uppercase;font-weight:700}
table.cmp tbody td:first-child{color:var(--muted);font-weight:600;font-size:12.5px;width:32%}
table.cmp tbody td{color:var(--ink);font-weight:500}
table.cmp .cmp-code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--accent-deep);font-weight:700}
table.cmp .cmp-quote a{display:inline-block;background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;padding:7px 14px;border-radius:8px;text-decoration:none;white-space:nowrap}
table.cmp .cmp-quote a:hover{background:var(--accent-deep)}


/* table */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:720px;table-layout:fixed;font-size:13px}
col.c1{width:9%} col.c2{width:11%} col.c3{width:27%} col.c4{width:15%} col.c5{width:8%} col.c6{width:14%} col.c7{width:9%} col.c8{width:7%}
thead th{background:#EFF4F0;color:var(--ink);text-align:left;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase;font-weight:700;padding:11px 12px;border-bottom:1px solid var(--line)}
tbody td{padding:11px 12px;border-bottom:1px solid #F1F3F0;color:var(--ink-soft);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody td:nth-child(2){font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--accent-deep);font-weight:600}
tbody td:nth-child(3){color:var(--ink);font-weight:600}
tbody td:nth-child(5),tbody td:nth-child(7),tbody td:nth-child(8){text-align:right;font-variant-numeric:tabular-nums}
tbody td:first-child{padding:8px 8px;vertical-align:middle}
.tbl img{width:52px;height:52px;object-fit:cover;border-radius:8px;border:1px solid var(--line);background:#fff;display:block}
.tbl .nophoto{width:52px;height:52px;border-radius:8px;border:1px dashed var(--line);display:flex;align-items:center;justify-content:center;font-size:9.5px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.tbl-note{font-size:12.5px;color:var(--muted);margin:11px 0 0}

/* why */
.why{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:700px){.why{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1020px){.why{grid-template-columns:repeat(3,1fr)}}
.why-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px}
.why-card h3{font-size:15.5px;font-weight:700;margin-bottom:7px}
.why-card p{margin:0;font-size:13.5px;color:var(--muted)}
.num{font-family:Archivo;font-weight:800;color:var(--accent);font-size:12px;letter-spacing:.08em}

/* process */
.proc{display:grid;gap:0;border-top:1px solid var(--line)}
.step{display:grid;grid-template-columns:34px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.step-n{font-family:Archivo;font-size:13px;font-weight:800;color:#fff;background:var(--accent);width:26px;height:26px;border-radius:8px;display:grid;place-items:center}
.step h3{font-size:15.5px;font-weight:700;margin-bottom:4px}
.step p{margin:0;font-size:13.5px;color:var(--muted)}

/* cta band */
/* FAQ */
.faq-list{max-width:780px;margin:0 auto}
.faq-list details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0;margin-bottom:10px;overflow:hidden}
.faq-list summary{padding:16px 20px;cursor:pointer;font-weight:700;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:20px;font-weight:400;color:var(--accent);flex:0 0 auto;transition:transform .2s}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list details p{padding:0 20px 16px;margin:0;font-size:14px;color:var(--ink-soft);line-height:1.65}

.band{margin:46px 0 0;background:#11312B;color:#fff;border-radius:18px;padding:30px 24px}
.band h2{font-size:clamp(21px,3vw,27px);font-weight:800}
.band p{margin:10px 0 0;color:#C9DED7;font-size:14.5px;max-width:60ch}
.band .btn-primary{margin-top:20px;background:#fff;color:#0E4A3A}
.band .btn-primary:hover{background:var(--accent-soft)}
.band .btn-ghost{margin-top:20px;border-color:#3C5F57;color:#fff;background:transparent}

/* product gallery */
.gal{margin:44px 0 0}
.gal-hd{margin-bottom:16px}
.gal-hd h2{font-size:clamp(20px,2.6vw,25px);font-weight:800}
.gal-hd p{margin:7px 0 0;font-size:14px;color:var(--muted);max-width:64ch}
.gal-grid{display:grid;grid-template-columns:1fr;gap:12px}
.gal-item{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.gal-item img{width:100%;aspect-ratio:1/1;object-fit:contain;background:#fff}
.gal-cap{padding:11px 14px 14px}
.gal-cap b{display:block;font-family:Archivo;font-weight:700;font-size:13.5px;letter-spacing:-.01em;color:var(--ink)}
.gal-cap span{display:block;margin-top:3px;font-size:13px;line-height:1.5;color:var(--muted)}
@media(min-width:620px){.gal-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.gal-grid{grid-template-columns:repeat(3,1fr)}}

/* about */
.about-grid{display:grid;gap:22px}
@media(min-width:880px){.about-grid{grid-template-columns:1.15fr .85fr;align-items:start}}
.about-img{border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
.about-img img{width:100%;aspect-ratio:16/10;object-fit:cover}
.prose p{font-size:15px;color:var(--ink-soft);margin:0 0 14px}
.facts{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px}
.facts li{display:grid;grid-template-columns:20px 1fr;gap:10px;font-size:14px;color:var(--ink-soft)}
.facts svg{width:16px;height:16px;margin-top:4px;color:var(--accent)}

/* contact */
.cgrid{display:grid;gap:18px}
@media(min-width:880px){.cgrid{grid-template-columns:.85fr 1.15fr;align-items:start}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px}
.cinfo h3{font-size:15px;font-weight:700;margin-bottom:10px}
.cinfo a{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:14.5px;color:var(--ink);padding:9px 0;border-bottom:1px solid var(--line)}
.cinfo a:last-of-type{border-bottom:0}
.cinfo a:hover{color:var(--accent-deep)}
.cinfo svg{width:17px;height:17px;color:var(--accent);flex:0 0 auto}
.field{margin-bottom:13px}
label{display:block;font-size:12.5px;font-weight:700;color:var(--ink-soft);margin-bottom:5px}
input,textarea,select{width:100%;font-family:inherit;font-size:16px;padding:11px 12px;border:1px solid #D8DEDA;border-radius:10px;background:#FCFCFA;color:var(--ink)}
input:focus,textarea:focus,select:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}
textarea{min-height:92px;resize:vertical}
.two{display:grid;gap:13px}
@media(min-width:560px){.two{grid-template-columns:1fr 1fr}}
.hint{font-size:12px;color:var(--muted);margin:9px 0 0}
.submit{width:100%;border:0;cursor:pointer;background:var(--accent);color:#fff;font-family:inherit;font-weight:700;font-size:15px;padding:14px;border-radius:11px;margin-top:4px}
.submit:hover{background:var(--accent-deep)}

/* footer */
.foot{margin-top:52px;border-top:1px solid var(--line);padding:26px 0 90px}
.foot-in{display:grid;gap:14px;font-size:13px;color:var(--muted)}
@media(min-width:760px){.foot-in{grid-template-columns:1fr auto;align-items:end}}
.foot a{color:var(--ink-soft);text-decoration:none}
.foot a:hover{color:var(--accent-deep)}
.foot-note{font-size:11.5px;color:#8A9793;max-width:66ch;margin-top:10px;line-height:1.6}

/* float */
.fab{position:fixed;right:16px;bottom:16px;z-index:70;display:inline-flex;align-items:center;gap:9px;background:#1FAF5A;color:#fff;text-decoration:none;font-weight:700;font-size:14px;padding:12px 16px;border-radius:12px;box-shadow:0 12px 26px -12px rgba(31,175,90,.7)}
.fab svg{width:19px;height:19px}
.fab:hover{background:#178f49}