*{box-sizing:border-box}
html{scroll-behavior:smooth}
:root{--bg:#f6f6f4;--card:#fff;--text:#111214;--muted:#63676f;--line:#e3e4e8;--soft:#f1f2f5;--dark:#0f1012;--accent:#2c7ef8;--accent2:#00a9d6;--shadow:0 24px 70px rgba(12,16,28,.08);--radius:28px}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72}
a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto}button{font:inherit}.container{width:min(1220px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,246,244,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-shell{display:flex;align-items:center;gap:24px;min-height:86px}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;display:grid;place-items:center;font-weight:900;box-shadow:0 12px 28px rgba(44,126,248,.22)}.brand-text strong{display:block;font-size:16px;line-height:1.1}.brand-text em{display:block;font-style:normal;font-size:11px;letter-spacing:.15em;color:var(--muted);margin-top:2px}.nav-links{display:flex;align-items:center;gap:18px;margin-left:auto}.nav-links a{font-size:14px;font-weight:800;color:#333842}.nav-links a.active,.nav-links a:hover{color:var(--accent)}.nav-actions{display:flex;gap:10px}.menu-toggle{display:none;border:0;background:transparent;flex-direction:column;gap:5px;cursor:pointer}.menu-toggle span{width:24px;height:2px;background:var(--dark);display:block}
.btn{display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:900;transition:.2s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}.btn-dark{background:var(--dark);color:#fff}.btn-light,.btn-outline{background:#fff;border-color:var(--line);color:var(--dark)}
.hero,.section{padding:76px 0}.hero-layout,.intro-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:28px;align-items:center}.hero-copy,.hero-stage img,.intro-cards a,.strip-grid a,.strip-grid button,.value-grid article,.step-grid article,.product-row,.faq-list details,.compare-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-copy{padding:36px}.hero-copy.narrow{max-width:760px}.eyebrow{display:inline-flex;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:900}.hero h1,.section-head h2,.intro-copy h2{font-size:clamp(36px,5vw,68px);line-height:1;letter-spacing:-.06em;margin:14px 0 12px;color:var(--dark)}.product-info h3,.step-grid h3,.value-grid h2,.faq-list summary{margin:14px 0 12px;color:var(--dark)}.hero p,.section-head p,.intro-copy p,.product-info p,.step-grid p,.value-grid p,.faq-list p{margin:0;color:var(--muted)}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}.hero-meta article{background:var(--soft);border:1px solid var(--line);border-radius:20px;padding:16px}.hero-meta strong{display:block;font-size:28px;color:var(--accent)}.hero-meta span{font-size:13px;color:var(--muted)}
.hero-stage{position:relative}.hero-stage img{width:100%;height:620px;object-fit:cover}.hero-stage.simple img{height:480px}.stage-note{position:absolute;left:18px;background:rgba(255,255,255,.95);border:1px solid var(--line);border-radius:20px;padding:12px 14px;box-shadow:var(--shadow)}.stage-note span{display:block;font-size:12px;color:var(--muted)}.stage-note b{display:block;margin-top:2px}.note-top{top:18px}.note-bottom{bottom:18px}
.section-strip{padding-top:0}.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.strip-grid a,.strip-grid button{padding:20px;text-align:left;cursor:pointer}.strip-grid span{display:block;font-size:12px;color:var(--accent);font-weight:900;letter-spacing:.12em;text-transform:uppercase}.strip-grid strong{display:block;margin-top:8px;font-size:20px;line-height:1.2}
.intro-copy{padding-right:10px}.intro-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px}.intro-cards a{padding:20px}.intro-cards b{display:block;font-size:22px}.intro-cards span{display:block;margin-top:6px;color:var(--muted)}.section-head{max-width:860px;margin-bottom:24px}
.product-list{display:grid;gap:18px}.product-row{display:grid;grid-template-columns:420px 1fr;gap:22px;padding:22px;align-items:center}.product-row.reverse{grid-template-columns:1fr 420px}.product-row.reverse .product-media{order:2}.product-row.reverse .product-info{order:1}.product-media{background:var(--soft);border:1px solid var(--line);border-radius:24px;padding:16px}.product-media img{width:100%;aspect-ratio:1/1;object-fit:contain}.pill{display:inline-flex;padding:7px 11px;border-radius:999px;background:#edf5ff;color:var(--accent);font-size:12px;font-weight:900;letter-spacing:.12em;text-transform:uppercase}.product-info h3{font-size:34px;letter-spacing:-.05em}.product-info ul{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:14px 0 0}.product-info li{padding:7px 11px;border-radius:999px;background:var(--soft);border:1px solid var(--line);font-size:13px}
.section-dark{background:#111316;color:#fff}.section-dark .section-head h2,.section-dark .section-head p,.section-dark .section-head .eyebrow,.section-dark .step-grid h3,.section-dark .step-grid p{color:#fff}.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step-grid article{padding:22px}.step-grid b{display:grid;place-items:center;width:46px;height:46px;border-radius:14px;background:var(--dark);color:#fff;margin-bottom:16px}.section-dark .step-grid article{background:#171a1f;border-color:#2a2e36}.section-dark .step-grid b{background:#000}.step-grid h3{font-size:25px;line-height:1.08;letter-spacing:-.04em}
.section-faq{padding-top:62px}.faq-list{display:grid;gap:12px}.faq-list details{padding:18px 20px}.faq-list summary{cursor:pointer;list-style:none;font-size:22px;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list p{margin-top:12px}.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.value-grid.two{grid-template-columns:repeat(2,1fr)}.value-grid article{padding:24px}.value-grid h2{font-size:30px;line-height:1.08;letter-spacing:-.04em}.compare-table{overflow:hidden}.compare-row{display:grid;grid-template-columns:1fr 1.55fr 1.2fr 1fr 1.3fr .7fr;gap:14px;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}.compare-row:last-child{border-bottom:0}.compare-row.head{background:var(--dark);color:#fff;font-weight:900}.compare-row span,.compare-row strong{font-size:14px}.mini-btn{border:1px solid var(--line);background:#fff;color:var(--accent);border-radius:999px;padding:9px 12px;font-weight:900;cursor:pointer}.entry-link{display:block;margin-top:14px;color:var(--accent);word-break:break-all}
.site-footer{padding:30px 0 56px;border-top:1px solid var(--line);background:#fff}.footer-shell{display:flex;align-items:center;justify-content:space-between;gap:24px}.footer-left strong{font-size:22px}.footer-left p{max-width:650px;margin:8px 0 0;color:var(--muted)}.footer-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px}.footer-btn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 14px;cursor:pointer;color:var(--accent);font-weight:900}
.contact-modal{display:none;position:fixed;inset:0;z-index:100;align-items:center;justify-content:center}.contact-modal.open{display:flex}.modal-mask{position:absolute;inset:0;background:rgba(10,12,20,.56);backdrop-filter:blur(8px)}.modal-panel{position:relative;z-index:2;width:min(430px,calc(100% - 28px));background:#fff;border-radius:30px;padding:28px;text-align:center;box-shadow:0 40px 100px rgba(0,0,0,.25)}.modal-close{position:absolute;right:16px;top:10px;border:0;background:transparent;font-size:30px;cursor:pointer}.modal-panel h2{margin:0 0 18px;font-size:30px}.qr-panel{border:1px solid var(--line);border-radius:22px;padding:10px}.qr-panel img{width:100%;border-radius:14px}.modal-links{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:16px}.modal-links a{padding:10px 14px;border-radius:999px;background:var(--soft);border:1px solid var(--line)}.float-contact{position:fixed;right:18px;bottom:18px;border:0;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-radius:999px;padding:14px 18px;box-shadow:0 16px 34px rgba(44,126,248,.22);font-weight:900;cursor:pointer;z-index:40}.lock{overflow:hidden}
@media(max-width:1180px){.nav-links,.nav-actions{display:none}.menu-toggle{display:flex;margin-left:auto}.hero-layout,.intro-layout,.product-row,.product-row.reverse{grid-template-columns:1fr}.product-row.reverse .product-media,.product-row.reverse .product-info{order:initial}.strip-grid,.intro-cards,.step-grid,.value-grid,.value-grid.two{grid-template-columns:repeat(2,1fr)}.compare-row{grid-template-columns:1fr 1fr}.compare-row.head{display:none}.footer-shell{flex-direction:column;align-items:flex-start}.footer-right{align-items:flex-start}}
@media(max-width:760px){.container{width:min(100%,calc(100% - 24px))}.hero,.section{padding:48px 0}.strip-grid,.intro-cards,.step-grid,.value-grid,.value-grid.two{grid-template-columns:1fr}.hero h1,.section-head h2,.intro-copy h2{font-size:38px}.hero-meta{grid-template-columns:1fr}.compare-row{grid-template-columns:1fr}.hero-stage img,.hero-stage.simple img{height:auto}}