:root{--bg:#f5f6f2;--surface:#fff;--ink:#172019;--muted:#667168;--line:#dfe5df;--brand:#173f2c;--brand2:#295c43;--accent:#d99a43;--soft:#eef3ef;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-weight:800}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--brand);color:#fff;font-size:18px;letter-spacing:1px;box-shadow:0 5px 14px rgba(23,63,44,.15)}.logo-img{width:auto;height:42px;object-fit:contain}.brand-copy{display:flex;flex-direction:column;line-height:1.1}.brand-copy strong{font-size:15px}.brand small{display:block;color:var(--muted);font-weight:600;font-size:10px;letter-spacing:1.4px;margin-top:4px}.nav-links{display:flex;gap:20px;font-size:14px}.nav-links a:hover{color:var(--brand2)}.menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 12px}.hero{padding:64px 0 56px;background:radial-gradient(circle at 75% 22%,#d9e4d7 0,transparent 30%),linear-gradient(135deg,#fafbf8,#eef2ec)}.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:48px;align-items:center}.hero-copy h1{font-size:clamp(42px,5.3vw,68px);line-height:1.08;margin:0 0 20px;letter-spacing:-1.2px}.hero-copy>p{font-size:18px;color:var(--muted);max-width:680px;margin:0 0 26px}.eyebrow{display:inline-block;color:var(--brand2);font-weight:800;font-size:12px;letter-spacing:1.35px;margin-bottom:12px}.actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:12px;border:1px solid var(--brand);font-weight:700}.btn.primary{background:var(--brand);color:#fff}.btn.secondary{background:#fff}.hero-media{background:#fff;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:0 18px 60px rgba(24,63,44,.12)}.hero-product{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px}.media-caption{font-size:12px;color:var(--muted);padding:9px 5px 0}.hero-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}.hero-points span{font-size:12px;border:1px solid #cdd8d0;background:#fff;padding:6px 10px;border-radius:999px}.section{padding:68px 0}.section h1{font-size:42px;line-height:1.2;margin:0 0 14px}.section h2{font-size:32px;line-height:1.25;margin:0 0 12px}.lead{color:var(--muted);max-width:820px}.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.feature-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px;border:1px solid var(--line);background:#fff}.chips{margin:18px 0}.mini-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}.mini-facts div,.quick-spec div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}.mini-facts strong,.quick-spec strong{display:block;font-size:20px}.mini-facts span,.quick-spec span{font-size:12px;color:var(--muted)}.photo-note{font-size:12px;color:var(--muted);margin-top:14px}.about-preview{align-items:start}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px}.card h3{margin:8px 0 8px}.card p{color:var(--muted)}.card-meta{font-size:12px;color:var(--brand2);font-weight:700;margin-top:12px}.product-card{padding:14px}.product-card-img{aspect-ratio:4/3;object-fit:cover;border-radius:13px;margin-bottom:16px}.kicker{font-size:12px;color:var(--brand2);font-weight:800}.product-placeholder{aspect-ratio:4/3;border-radius:14px;background:linear-gradient(135deg,#e5e9e3,#f8f9f6);display:grid;place-items:center;color:#7b857d;margin-bottom:18px;border:1px dashed #bac4bc}.facts{display:grid;grid-template-columns:1fr 1fr;gap:14px}.fact{padding:22px;border-radius:16px;background:var(--brand);color:#fff;min-height:126px}.fact strong{font-size:24px;display:block}.fact span{opacity:.78;font-size:13px}.info-band{background:#e8eee8}.notice{background:#fff7e8;border:1px solid #ecd4ac;padding:15px 18px;border-radius:12px;color:#765323}.article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px}.article h1{font-size:40px;line-height:1.25}.article h2{margin-top:34px}.article p{max-width:900px}.meta{font-size:13px;color:var(--muted)}.breadcrumb{font-size:13px;color:var(--muted);margin:22px auto}.definition{border-left:4px solid var(--brand);padding:16px 18px;background:#eef3ef;border-radius:0 12px 12px 0}.site-footer{background:#102419;color:#dfe8e1;margin-top:60px;padding:44px 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1.2fr .8fr;gap:28px}.site-footer a{color:#dfe8e1}.site-footer .muted{color:#9cb1a2}.legal{border-top:1px solid #31513d;margin-top:30px;padding-top:18px;font-size:13px;color:#9cb1a2}.empty{padding:34px;border:1px dashed #b8c3ba;border-radius:16px;text-align:center;color:var(--muted);background:#fff}.pill{display:inline-block;border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 10px;font-size:12px;margin:4px 4px 0 0}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;background:#fff}.data-table th,.data-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}.data-table th{width:190px;background:#f4f6f3}.nutrition th{width:auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:10px 0}.faq summary{font-weight:700;cursor:pointer}.text-link{font-weight:700;color:var(--brand2)}.product-top{display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center;margin-bottom:34px}.product-main-image{background:#fff;border:1px solid var(--line);padding:12px;border-radius:22px}.detail-hero{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px}.product-summary h1{font-size:44px;line-height:1.15;margin:8px 0 18px}.quick-spec{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}.side-note{position:sticky;top:96px;background:#eef3ef;border:1px solid #d5e0d7;border-radius:16px;padding:20px;color:#435348}.side-note strong{font-size:18px}.gallery-title{margin-top:42px}.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.gallery-item{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px}.gallery-img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f8f8f5;border-radius:12px}.gallery-item figcaption{font-size:12px;color:var(--muted);padding:9px 4px 3px}.brand-fact-grid{display:grid;grid-template-columns:260px 1fr;gap:24px;align-items:start;margin:24px 0}.brand-logo-panel{background:#f7f8f5;border:1px solid var(--line);border-radius:16px;padding:34px;display:flex;justify-content:center;align-items:center;min-height:180px}.brand-logo-panel .logo-img{height:auto;max-width:180px}.brand-logo-panel .brand-copy{display:none}
@media(max-width:900px){.hero-grid,.split,.product-top,.content-grid{grid-template-columns:1fr}.side-note{position:static}.grid{grid-template-columns:1fr 1fr}.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:18px 20px;flex-direction:column}.nav-links.open{display:flex}.menu-btn{display:block}.footer-grid{grid-template-columns:1fr}.hero{padding-top:44px}.hero-media{max-width:700px}.brand-fact-grid{grid-template-columns:1fr}.brand-logo-panel{min-height:130px}}
@media(max-width:600px){.brand-mark{width:38px;height:38px;border-radius:11px;font-size:16px}.container{width:min(var(--max),calc(100% - 28px))}.grid,.facts,.gallery,.mini-facts,.quick-spec{grid-template-columns:1fr}.hero-copy h1{font-size:40px}.section h1,.product-summary h1{font-size:34px}.article{padding:22px}.logo-img{height:36px}.brand-copy strong{display:none}.brand-copy small{font-size:9px}.data-table th{width:125px}.section{padding:50px 0}}

/* v0.3 visual refinement */
:root{--shadow:0 20px 55px rgba(18,48,33,.10);--shadow-sm:0 9px 28px rgba(18,48,33,.08)}
body{background:#f7f8f5}.site-header{box-shadow:0 1px 0 rgba(23,63,44,.04)}
.nav-links a{position:relative;padding:28px 0}.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:20px;height:2px;background:var(--brand);transition:right .2s ease}.nav-links a:hover:after{right:0}
.btn{transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm)}.btn.primary:hover{background:#205039}
.hero{position:relative;overflow:hidden;padding-bottom:0}.hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:rgba(35,91,65,.055);right:-160px;top:-210px}.hero-media{position:relative}.hero-badge{position:absolute;left:-22px;bottom:54px;background:#173f2c;color:white;border-radius:18px;padding:14px 18px;box-shadow:var(--shadow);display:grid;min-width:126px}.hero-badge strong{font-size:34px;line-height:1}.hero-badge span{font-weight:800}.hero-badge small{opacity:.7;margin-top:3px}.hero-stats{margin-top:48px;display:grid;grid-template-columns:repeat(4,1fr);background:#173f2c;color:#fff;border-radius:22px 22px 0 0;overflow:hidden}.hero-stats div{padding:22px 24px;border-right:1px solid rgba(255,255,255,.12)}.hero-stats div:last-child{border-right:0}.hero-stats strong{display:block;font-size:18px;word-break:break-word}.hero-stats span{display:block;font-size:12px;opacity:.7;margin-top:4px}
.product-feature{background:#fff}.product-visual-stack{position:relative;padding:0 42px 42px 0}.visual-primary{overflow:hidden;border-radius:22px;box-shadow:var(--shadow)}.visual-primary .feature-img{border:0;border-radius:22px}.visual-float{position:absolute;right:0;bottom:0;width:31%;background:#fff;padding:7px;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm)}.float-img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:11px}
.section-heading{margin-bottom:26px}.section-heading.horizontal{display:flex;align-items:end;justify-content:space-between;gap:24px}.section-heading h2{margin-bottom:0}
.scenario-section{background:#eef3ef}.scenario-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.scenario-card{position:relative;background:#fff;border:1px solid #dbe3dc;border-radius:18px;padding:26px;min-height:200px;overflow:hidden}.scenario-card:after{content:"";position:absolute;width:100px;height:100px;border-radius:50%;background:#f0f4f0;right:-35px;bottom:-35px}.scenario-card h3{font-size:20px;margin:22px 0 9px}.scenario-card p{color:var(--muted);font-size:14px}.scenario-index{font-size:12px;font-weight:800;color:var(--brand2);letter-spacing:1px}
.trust-section{background:#f8f9f6}.facts .fact{box-shadow:var(--shadow-sm);border:1px solid rgba(255,255,255,.07)}
.knowledge-preview{background:#fff}.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.knowledge-card{display:flex;flex-direction:column;background:#f8f9f6;border:1px solid var(--line);border-radius:18px;padding:24px;min-height:260px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.knowledge-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#c3d0c6}.knowledge-card h3{font-size:20px;line-height:1.45;margin:9px 0}.knowledge-card p{font-size:14px;color:var(--muted);flex:1}.knowledge-heading{margin-top:34px}
.product-card{transition:transform .18s ease,box-shadow .18s ease}.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.contact-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;background:#eef3ef;border:1px solid #d5e0d7;border-radius:18px;padding:24px;margin-bottom:24px}.contact-panel h2{margin:4px 0 8px}.qualification-card{background:#eef3ef;border:1px solid #d5e0d7;border-radius:18px;padding:26px;margin:24px 0}.qualification-card strong{font-size:28px;letter-spacing:.3px;color:var(--brand)}
@media(max-width:900px){.nav-links a{padding:7px 0}.nav-links a:after{display:none}.hero-badge{left:10px;bottom:48px}.hero-stats{grid-template-columns:1fr 1fr;border-radius:18px 18px 0 0}.hero-stats div:nth-child(2){border-right:0}.hero-stats div:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12)}.scenario-grid,.knowledge-grid{grid-template-columns:1fr 1fr}.product-visual-stack{padding:0 34px 34px 0}}
@media(max-width:600px){.hero{padding-bottom:0}.hero-badge{position:static;margin:10px 0 0;border-radius:12px;grid-template-columns:auto 1fr;align-items:center;gap:0 8px;min-width:0}.hero-badge strong{grid-row:1/3;font-size:30px}.hero-badge small{margin:0}.hero-stats{margin-top:32px;grid-template-columns:1fr}.hero-stats div{border-right:0!important;border-bottom:1px solid rgba(255,255,255,.12)!important;padding:16px 18px}.hero-stats div:last-child{border-bottom:0!important}.scenario-grid,.knowledge-grid{grid-template-columns:1fr}.scenario-card{min-height:0}.section-heading.horizontal{align-items:start;flex-direction:column}.product-visual-stack{padding:0 26px 26px 0}.visual-float{width:36%}.contact-panel{align-items:flex-start;flex-direction:column}.knowledge-card{min-height:0}}

/* v0.4 qualifications & trust */
.qualification-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:28px}
.qualification-card{background:#fff;border:1px solid rgba(23,63,44,.14);border-radius:22px;padding:26px;box-shadow:0 12px 34px rgba(23,63,44,.06)}
.qualification-card h2{margin-top:6px}
.qualification-card .table-wrap{margin:18px 0}
.qualification-card.product-license-card{grid-column:1/-1;background:linear-gradient(135deg,#f5f8f3,#eef4ed)}
.qualification-card.product-license-card strong{font-size:clamp(22px,3vw,34px);color:#173f2c;letter-spacing:.02em}
.certificate-img{display:block;width:100%;max-height:720px;object-fit:contain;background:#f4f4ef;border:1px solid #e1e3da;border-radius:16px;margin-top:20px}
.certificate-img.portrait{max-height:820px}
.certificate-inline{max-width:780px;margin:24px auto}
.certificate-inline img{width:100%;height:auto;border:1px solid #e1e3da;border-radius:18px;background:#f7f7f3}
@media(max-width:820px){.qualification-grid{grid-template-columns:1fr}.qualification-card.product-license-card{grid-column:auto}}