/* ===== VIKUNO Brand System ===== */
:root{
  --sand:#F7F4EF; --ink:#1A1A1A; --deep:#1F5C4A; --deep-d:#173f34;
  --camel:#C89B62; --sunset:#F0803C; --white:#FFFFFF; --line:#E5DFD4;
  --radius:10px; --shadow:0 2px 10px rgba(26,26,26,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);
  background:var(--sand);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:Poppins,Inter,sans-serif;line-height:1.25;font-weight:600}
.container{max-width:1120px;margin:0 auto;padding:0 22px}

/* ===== Header ===== */
header.site{position:sticky;top:0;z-index:50;background:rgba(247,244,239,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.navbar{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:Poppins,sans-serif;font-size:24px;font-weight:700;letter-spacing:3px;color:var(--deep)}
.logo b{color:var(--camel);font-weight:700}
.logo .v{display:inline-block;transform:skewX(-8deg)}
nav.main ul{display:flex;gap:26px;list-style:none}
nav.main a{font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a.active{color:var(--deep);border-color:var(--camel)}
.btn{display:inline-block;padding:12px 26px;border-radius:8px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:.18s}
.btn-primary{background:var(--sunset);color:#fff}
.btn-primary:hover{background:#e06f2c;transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1.5px solid var(--deep);color:var(--deep)}
.btn-ghost:hover{background:var(--deep);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px}
.burger{display:none;background:none;border:none;cursor:pointer;font-size:26px;color:var(--deep);line-height:1}

/* ===== Hero ===== */
.hero{background:linear-gradient(120deg,#FDFCF9 55%,#EFE7DB 100%);padding:70px 0 60px}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.eyebrow{display:inline-block;background:#EFE7DB;color:var(--deep);font-size:13px;font-weight:600;letter-spacing:1px;
  padding:6px 14px;border-radius:20px;margin-bottom:18px}
.hero h1{font-size:44px;margin-bottom:18px;color:var(--deep)}
.hero p.lead{font-size:18px;color:#444;max-width:520px;margin-bottom:28px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-art{background:var(--white);border-radius:16px;box-shadow:var(--shadow);padding:0;overflow:hidden;min-height:340px}
.hero-art svg{width:100%;max-width:360px;height:auto}

/* trust bar */
.trust{background:var(--deep);color:#EAF2EF}
.trust .row{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:18px 0}
.trust span{font-size:14px;display:flex;align-items:center;gap:8px}
.trust b{color:var(--camel)}

/* ===== Sections ===== */
section{padding:64px 0}
.sec-head{max-width:620px;margin-bottom:38px}
.sec-head .kicker{font-size:13px;font-weight:600;letter-spacing:2px;color:var(--camel);text-transform:uppercase;margin-bottom:10px}
.sec-head h2{font-size:32px;color:var(--deep)}
.sec-head p{margin-top:12px;color:#555}

/* category cards */
.cats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
.cat{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:.18s;cursor:pointer}
.cat:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--camel)}
.cat .ic{width:64px;height:64px;margin:0 auto 16px;border-radius:50%;background:#F0E8DC;display:flex;align-items:center;justify-content:center;overflow:hidden}
.cat .ic img{width:100%;height:100%;object-fit:cover;display:block}
.cat .ic svg{width:34px;height:34px;stroke:var(--deep)}
.cat h3{font-size:16.5px;margin-bottom:6px}
.cat p{font-size:13.5px;color:#777}

/* product grid */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.chip{padding:8px 18px;border:1.5px solid var(--line);border-radius:20px;background:#fff;font-size:14px;cursor:pointer;font-weight:500}
.chip.active{background:var(--deep);color:#fff;border-color:var(--deep)}
.grid-prod{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.18s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.card .thumb .badge{z-index:1}
.card .thumb svg{width:44%;height:auto}
.badge{position:absolute;top:12px;left:12px;background:var(--sunset);color:#fff;font-size:12px;font-weight:600;padding:4px 11px;border-radius:14px}
.card .body{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column}
.card .sku{font-size:12px;color:var(--camel);font-weight:600;letter-spacing:.5px}
.card h3{font-size:16.5px;margin:6px 0 8px}
.card .meta{font-size:13px;color:#666;margin-bottom:14px}
.card .spec{font-size:12.3px;color:#8a8a8a;line-height:1.55;margin:-7px 0 14px;letter-spacing:.01em}
.card .body .btn{margin-top:auto;text-align:center}

/* feature split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.split .art{background:var(--white);border-radius:16px;box-shadow:var(--shadow);padding:40px;display:flex;align-items:center;justify-content:center;min-height:320px}
.split .art svg{width:80%;max-width:340px;height:auto}
.points{list-style:none;margin-top:22px}
.points li{display:flex;gap:12px;margin-bottom:14px;font-size:15px}
.points .dot{flex:0 0 22px;width:22px;height:22px;border-radius:50%;background:var(--camel);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:2px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px}
.step .n{font-family:Poppins;font-size:30px;font-weight:700;color:var(--camel)}
.step h3{font-size:16px;margin:10px 0 8px}
.step p{font-size:14px;color:#666}

/* CTA band */
.band{background:var(--deep);color:#fff;border-radius:16px;padding:52px 40px;text-align:center}
.band h2{color:#fff;font-size:30px;margin-bottom:14px}
.band p{color:#CFE0D9;max-width:560px;margin:0 auto 26px}

/* product detail */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.pd .photo{background:#fff;border:1px solid var(--line);border-radius:14px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.pd .photo svg{width:52%}
.spec{width:100%;border-collapse:collapse;margin-top:20px;font-size:14.5px}
.spec td{padding:10px 12px;border-top:1px solid var(--line)}
.spec td:first-child{width:38%;color:#777;font-weight:500}
.crumbs{font-size:13.5px;color:#888;margin-bottom:20px}
.crumbs a{color:var(--deep)}

/* forms */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:#333}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:8px;font-size:14.5px;font-family:inherit;background:#FDFCFA}
.field textarea{min-height:110px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--camel)}

/* contact grid */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:start}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:18px}
.info-card h3{font-size:16px;margin-bottom:12px;color:var(--deep)}
.info-card p{font-size:14.5px;color:#555;margin-bottom:8px}
.wa-fab{position:fixed;right:22px;bottom:22px;width:56px;height:56px;border-radius:50%;background:#25D366;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(0,0,0,.2);z-index:60}
.wa-fab svg{width:30px;height:30px;fill:#fff}

/* footer */
footer.site{background:var(--deep-d);color:#BFD3CB;margin-top:40px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding:52px 0 34px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer a,footer p{font-size:13.5px;color:#BFD3CB;display:block;margin-bottom:8px}
footer a:hover{color:var(--camel)}
.foot-logo{font-family:Poppins;font-size:22px;font-weight:700;letter-spacing:3px;color:#fff;margin-bottom:12px}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:13px;text-align:center;color:#93AEA4}

/* blog */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;transition:.18s}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post-card .tag{display:inline-block;background:#EFE7DB;color:var(--deep);font-size:12px;font-weight:600;padding:4px 12px;border-radius:12px;margin-bottom:14px;width:fit-content}
.post-card h3{font-size:17.5px;margin-bottom:10px;line-height:1.4}
.post-card p{font-size:14px;color:#666;flex:1}
.post-card .meta{font-size:12.5px;color:#999;margin-top:16px}
.article{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:44px 48px}
.article h1{font-size:30px;color:var(--deep);margin-bottom:14px;line-height:1.3}
.article .meta{font-size:13px;color:#999;margin-bottom:28px;display:flex;gap:14px;align-items:center}
.article .meta .tag{background:#EFE7DB;color:var(--deep);font-weight:600;padding:4px 12px;border-radius:12px}
.article h3{font-size:19px;color:var(--deep);margin:30px 0 10px}
.article p{margin-bottom:16px;color:#333}
.article ul{margin:0 0 16px 22px}
.article li{margin-bottom:8px;color:#333}

/* toast */
.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 24px;border-radius:8px;font-size:14px;z-index:90;opacity:0;pointer-events:none;transition:.3s}
.toast.show{opacity:1}

@media(max-width:860px){
  .hero .grid,.split,.pd,.contact-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  footer .cols{grid-template-columns:1fr 1fr;gap:22px 24px;padding:42px 0 26px}
  nav.main{position:fixed;inset:64px 0 auto 0;background:var(--sand);border-bottom:1px solid var(--line);display:none}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;padding:18px 22px;gap:14px}
  .burger{display:block}
  .nav-cta{display:none}
  section{padding:48px 0}
}

/* ===== language switcher ===== */
.lang{display:flex;align-items:center;margin-left:6px}
.lang a{font-size:12px;font-weight:700;letter-spacing:.5px;color:#9a938a;padding:4px 7px;border-bottom:2px solid transparent}
.lang a:first-child{margin-left:0}
.lang a:hover{color:var(--deep)}
.lang a.on{color:var(--deep);border-color:var(--camel)}
@media(max-width:1080px){.lang{display:none}}
@media(max-width:860px){.lang{display:flex}}

.hero-art img{width:100%;height:100%;object-fit:cover;display:block}

/* why-photo art card */
.split .art.art-photo{padding:0;overflow:hidden}
.split .art.art-photo img{width:100%;height:100%;object-fit:cover;display:block}

/* factory gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px}
.gallery figure{background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);margin:0;display:flex;flex-direction:column}
.gallery img{width:100%;height:215px;object-fit:cover;display:block}
.gallery figcaption{padding:10px 14px;font-size:13.5px;color:#444;line-height:1.5}

/* gallery video */
.gallery .gallery-video{grid-column:1/-1}
.gallery .gallery-video video{width:100%;max-height:520px;object-fit:cover;display:block;background:#000}
.gallery .gallery-video figcaption{padding:10px 14px;font-size:13.5px;color:#444}

/* buyer reviews */
.reviews{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.review{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;margin:0}
.review .stars{color:#F0A03C;letter-spacing:2px;font-size:15px;margin-bottom:8px}
.review blockquote{margin:0;font-size:14.5px;color:#333;line-height:1.65;font-style:italic}
.review figcaption{margin-top:10px;font-size:13px;color:#777;font-weight:600}

/* what we handle */
.handles{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.handle{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px}
.handle .tick{width:26px;height:26px;border-radius:50%;background:rgba(196,155,101,.14);color:var(--camel);display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;margin-bottom:12px}
.handle h3{font-size:15.5px;margin:0 0 8px}
.handle p{font-size:14px;color:#666;line-height:1.62;margin:0}
.handles-note{text-align:center;margin-top:24px;font-size:14.5px;color:#8a7a66;font-style:italic}

/* inquiry modal */
.inq-modal{position:fixed;inset:0;z-index:100;display:none}
.inq-modal.open{display:block}
.inq-back{position:absolute;inset:0;background:rgba(15,26,43,.55)}
.inq-box{position:relative;max-width:430px;margin:6vh auto;background:#fff;border-radius:14px;padding:28px 26px;max-height:88vh;overflow:auto;box-shadow:0 18px 50px rgba(0,0,0,.25)}
.inq-x{position:absolute;top:8px;right:12px;background:none;border:none;font-size:26px;line-height:1;color:#888;cursor:pointer}
.inq-box h3{margin:0 0 6px;font-size:22px;color:var(--deep)}
.inq-sub{margin:0 0 16px;font-size:14px;color:#666}
.inq-form input,.inq-form textarea{width:100%;box-sizing:border-box;padding:11px 12px;margin-bottom:10px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:14.5px;background:#fff;color:#222}
.inq-form textarea{resize:vertical}
.inq-form .btn{width:100%}
.inq-wa{display:block;text-align:center;margin-top:12px;font-size:13.5px;color:#128C7E;text-decoration:none}
.inq-done{font-size:15px;color:#1a7f4b;font-weight:600;padding:14px 0;text-align:center}
.inq-fail{font-size:14px;color:#b33}
.inq-fail a{color:#128C7E;font-weight:600}

/* 小屏手机断点（<480px）：收紧标题与按钮，避免小屏拥挤 */
@media(max-width:480px){
  h1{font-size:24px!important;line-height:1.2}
  h2{font-size:20px!important}
  .article h1{font-size:22px!important}
  .btn{padding:10px 18px;font-size:14px}
  .btn.btn-sm{padding:8px 14px;font-size:13px}
  .container{padding-left:14px;padding-right:14px}
  /* 小屏页脚：单列 + 左右留足间隙，避免品牌文字贴边 */
  footer .cols{grid-template-columns:1fr;gap:4px;padding:34px 0 22px}
  footer .container.cols{padding-left:20px;padding-right:20px}
  .pd{gap:16px}
}

/* ===== product lines (homepage) ===== */
.lines{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.line-card{display:flex;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.18s}
.line-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--camel)}
.line-thumb{width:172px;flex:0 0 172px;background:#F0E8DC;min-height:200px}
.line-thumb img{width:100%;height:100%;object-fit:cover}
.line-body{padding:20px 22px;display:flex;flex-direction:column;flex:1}
.line-kicker{font-size:12px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--camel);margin-bottom:6px}
.line-body h3{font-size:18px;color:var(--deep);margin-bottom:8px}
.line-body p{font-size:14px;color:#555;margin-bottom:14px;flex:1}
.line-specs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.line-specs span{font-size:12.5px;background:var(--sand);border:1px solid var(--line);border-radius:14px;padding:3px 10px;color:var(--deep);white-space:nowrap}
.line-link{font-size:13.5px;font-weight:600;color:var(--sunset)}
.lines-more{margin-top:24px;font-size:14.5px;color:#555;background:var(--white);border:1px dashed var(--line);border-radius:var(--radius);padding:16px 20px}
.lines-more a{color:var(--deep);font-weight:600;border-bottom:1.5px solid var(--camel)}
@media(max-width:760px){
  .lines{grid-template-columns:1fr}
  /* 手机上改为上图下文竖排，产品图完整展示不裁切 */
  .line-card{flex-direction:column}
  .line-thumb{width:100%;flex-basis:auto;min-height:0}
  .line-thumb img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover}
  .line-body{padding:16px 18px 18px}
}

/* ===== page head H1 (products / range guide) ===== */
.sec-head h1{font-size:36px;line-height:1.2;color:var(--deep);letter-spacing:-.4px}
.sec-head.wide{max-width:840px}
.sec-head .lede{margin-top:14px;color:#555;font-size:15.5px;line-height:1.65}

/* ===== hub link cards (range navigator) ===== */
.hubgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(232px,1fr));gap:16px;margin:20px 0 6px}
.hub{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 18px;transition:.18s}
.hub:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--camel)}
.hub b{display:block;font-size:15.5px;color:var(--deep);margin-bottom:6px}
.hub span{display:block;font-size:13.5px;color:#777;line-height:1.55}
.hub .go{display:inline-block;margin-top:10px;font-size:13px;font-weight:600;color:var(--sunset)}
.prose-wide{max-width:820px}
.prose-wide h2{font-size:24px;color:var(--deep);margin:34px 0 12px}
.prose-wide h3{font-size:17.5px;color:var(--deep);margin:22px 0 8px}
.prose-wide p{color:#4a4a4a;font-size:15.5px;line-height:1.72;margin-bottom:12px}
.prose-wide ul{list-style:none;margin:0 0 14px}
.prose-wide li{position:relative;padding-left:20px;color:#4a4a4a;font-size:15.5px;line-height:1.7;margin-bottom:7px}
.prose-wide li:before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--camel)}
.prose-wide a{color:var(--deep);font-weight:600;border-bottom:1.5px solid var(--camel)}
@media(max-width:760px){.sec-head h1{font-size:27px}.prose-wide h2{font-size:21px}}