:root{--canvas:#f5fafa;--ink:#092e37;--copy:#526e77;--brand:#0e6d7d;--line:#dce7e9;--mist:#eaf3f4;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--canvas);color:var(--ink);font-family:system-ui,-apple-system,"Microsoft YaHei",sans-serif;font-size:15px;line-height:1.65}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.28;font-weight:650}h1{font-size:clamp(31px,3.6vw,52px);letter-spacing:-.03em}h2{font-size:clamp(26px,2.3vw,36px)}h3{font-size:18px}p{color:var(--copy)}.container{width:min(1280px,calc(100% - 64px));margin:auto}.site-header{border-bottom:1px solid var(--line);background:rgba(245,250,250,.96);position:sticky;top:0;z-index:20}.header-inner{max-width:1360px;margin:auto;height:82px;padding:0 40px;display:flex;align-items:center;gap:30px}.brand{font-size:22px;font-weight:600;display:inline-flex;align-items:center;gap:12px;white-space:nowrap}.logo{display:grid;place-items:center;width:42px;height:42px;border-radius:11px;background:#0b313a;color:#4ce3e7;font-size:22px}.desktop-nav{display:flex;justify-content:center;gap:25px;flex:1;font-size:14px;color:#49636a}.desktop-nav a:hover,.mobile-nav a:hover{color:var(--brand)}.header-actions{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:48px;padding:0 23px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:600;transition:.2s}.btn:hover{transform:translateY(-2px)}.primary{background:var(--brand);border-color:var(--brand);color:#fff}.cart-button{position:relative;display:grid;place-items:center;width:46px;height:46px;border:1px solid var(--line);border-radius:11px;font-size:23px}.cart-button span{position:absolute;top:-7px;right:-5px;background:var(--brand);color:white;font-size:11px;width:21px;height:21px;text-align:center;border-radius:50%}.menu-toggle{display:none;border:1px solid var(--line);background:transparent;border-radius:10px;width:44px;height:44px;font-size:19px}.mobile-nav{padding:12px 24px 20px;border-top:1px solid var(--line)}.mobile-nav:not([hidden]){display:grid;gap:4px}.mobile-nav a{padding:9px}.hero{padding:72px 0 54px}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.eyebrow{color:var(--brand);font-size:13px;letter-spacing:.08em;font-weight:700}.hero h1{margin:20px 0}.hero p{max-width:520px;font-size:16px;line-height:1.9}.hero-actions{display:flex;align-items:center;gap:22px;margin:28px 0}.link-arrow{font-weight:600;color:var(--brand)}.hero-facts{display:flex;gap:35px;margin-top:42px}.hero-facts span{font-size:13px;color:var(--copy)}.hero-facts b{display:block;color:var(--ink);font-size:16px}.hero-image{background:#e5f0f1;border-radius:24px;overflow:hidden;min-height:360px}.hero-image img{width:100%;height:440px;object-fit:cover}.trust{background:white;border-block:1px solid var(--line)}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:28px 0;gap:20px}.trust-grid strong{display:block}.trust-grid small{color:var(--copy)}.section{padding:76px 0}.section.white{background:#fff}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:30px}.section-head p{margin-top:12px;max-width:610px}.pill{display:inline-block;padding:5px 10px;border-radius:30px;background:#ddf2f3;color:var(--brand);font-size:12px;font-weight:650}.lines{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.line-card{padding:32px;border:1px solid var(--line);background:#fff;border-radius:18px;min-height:190px}.line-card h3{font-size:24px;margin:12px 0}.line-card p{margin-bottom:18px}.three-grid,.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.simple-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:16px}.simple-card h3{margin:12px 0}.page-intro{padding:55px 0 32px}.page-intro p{margin-top:14px}.filter-bar{background:white;border-block:1px solid var(--line);padding:18px 0}.filter-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.chip{border:1px solid var(--line);border-radius:24px;background:#fff;padding:9px 16px;color:var(--copy)}.chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}.sort{margin-left:auto;border:1px solid var(--line);padding:9px;border-radius:9px;background:#fff}.products-grid{padding:32px 0 72px}.product-card{background:#fff;border:1px solid var(--line);border-radius:17px;overflow:hidden}.product-image{height:230px;padding:22px;background:#eaf3f4;display:block;position:relative}.product-image img{height:100%;width:100%;object-fit:contain;mix-blend-mode:multiply}.product-image .pill{position:absolute;left:15px;top:15px}.product-body{padding:21px}.product-body h3{font-size:18px}.product-body p{font-size:13px;margin:9px 0 14px;min-height:42px}.tags{display:flex;gap:6px;flex-wrap:wrap}.tag{background:#eff6f6;color:#49676e;padding:4px 7px;font-size:12px;border-radius:6px}.price{font-size:26px;font-weight:750;color:#072e37}.price small{font-size:12px;font-weight:400;color:var(--copy)}.card-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.tiny-btn{border:1px solid var(--line);border-radius:9px;background:#fff;padding:7px 12px;color:var(--brand);font-weight:600}.notice{background:#e9f5f5;border:1px solid #cfe7e8;color:#42656c;padding:12px 16px;border-radius:10px;font-size:13px}.detail{padding:30px 0 80px}.breadcrumb{color:#6c858a;font-size:13px;margin-bottom:25px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:55px}.detail-image{border-radius:20px;background:#eaf3f4;padding:40px;min-height:400px;display:grid;place-items:center}.detail-image img{width:100%;height:410px;object-fit:contain;mix-blend-mode:multiply}.detail-info h1{font-size:clamp(29px,3vw,40px);margin:15px 0 10px}.detail-info>p{margin:12px 0}.detail-price{padding:20px 0;border-bottom:1px solid var(--line)}.detail-price .price{font-size:36px}.choice-label{font-weight:650;margin:21px 0 9px}.choices{display:flex;gap:10px;flex-wrap:wrap}.choice{background:#fff;border:1px solid var(--line);border-radius:9px;padding:10px 14px;min-height:45px;text-align:left}.choice.active{border:2px solid var(--brand);color:var(--brand);padding:9px 13px}.quantity{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:#fff;align-items:center}.quantity button{width:42px;height:40px;border:0;background:transparent}.quantity span{min-width:35px;text-align:center}.detail-actions{display:flex;gap:12px;margin:24px 0}.detail-actions .btn{flex:1}.detail-content{padding-top:65px;display:grid;grid-template-columns:2fr 1fr;gap:45px}.panel{background:#fff;border:1px solid var(--line);border-radius:17px;padding:28px}.panel h2{font-size:24px;margin-bottom:20px}.spec-list{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}.spec-list div{padding:12px 0;border-bottom:1px solid var(--line)}.spec-list span{display:block;font-size:13px;color:var(--copy)}.plan-table{width:100%;border-collapse:collapse;margin-top:15px}.plan-table td,.plan-table th{text-align:left;padding:13px;border-bottom:1px solid var(--line);font-size:14px}.stack{display:grid;gap:16px}.cart-layout{display:grid;grid-template-columns:2fr 1fr;gap:30px;align-items:start}.cart-item{display:grid;grid-template-columns:82px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.cart-item img{width:82px;height:82px;object-fit:contain;background:var(--mist);border-radius:9px}.muted{font-size:13px;color:var(--copy)}.delete{border:0;background:transparent;color:var(--copy);padding:0;margin-top:6px}.summary-row{display:flex;justify-content:space-between;margin:12px 0}.total{border-top:1px solid var(--line);padding-top:18px;font-weight:700}.summary .btn{width:100%;margin-top:18px}.empty{text-align:center;padding:55px 15px}.empty p{margin:12px}.info-block{max-width:760px;margin:0 auto}.info-block h1{margin-bottom:18px}.info-block p{margin-bottom:15px}.faq details{padding:18px 0;border-bottom:1px solid var(--line)}.faq summary{font-weight:600;cursor:pointer}.faq details p{padding-top:12px}footer{background:#0b3039;color:#e6f4f5}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:35px;padding:60px 0}.footer-grid>div{display:flex;flex-direction:column;gap:10px}.footer-grid a:not(.brand),.footer-grid p{font-size:13px;color:#b5ccd0}.footer-grid strong{font-size:15px}.footer-bottom{padding:20px 0;border-top:1px solid #31545a;color:#a7c1c5;font-size:12px}#toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#0b3039;color:#fff;padding:10px 17px;border-radius:9px;opacity:0;pointer-events:none;transition:.2s;z-index:30}#toast.show{opacity:1;transform:translate(-50%,0)}.mobile-buy{display:none}@media(max-width:1000px){.desktop-nav{display:none}.header-inner{justify-content:space-between}.menu-toggle{display:block}.products-grid{grid-template-columns:repeat(2,1fr)}.hero-grid{gap:30px}.trust-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:640px){.container{width:calc(100% - 36px)}.header-inner{height:66px;padding:0 18px}.brand{font-size:19px}.logo{width:37px;height:37px}.header-cta{display:none}.hero{padding:45px 0 35px}.hero-grid,.detail-grid,.detail-content,.cart-layout{grid-template-columns:1fr;gap:22px}.hero-image{min-height:0}.hero-image img{height:270px}.hero-facts{gap:24px;margin-top:30px}.trust-grid{gap:15px;padding:22px 0}.section{padding:52px 0}.section-head{align-items:start;flex-direction:column}.lines,.three-grid{grid-template-columns:1fr}.line-card{padding:24px;min-height:0}.products-grid{gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));padding-top:20px}.product-image{height:155px;padding:14px}.product-body{padding:13px}.product-body h3{font-size:15px}.product-body p{font-size:12px;min-height:60px}.product-body .tag{font-size:10px}.card-bottom{display:block}.card-bottom .tiny-btn{margin-top:8px}.page-intro{padding:36px 0 25px}.sort{margin-left:0}.detail{padding-top:20px;padding-bottom:95px}.detail-image{min-height:0;padding:24px}.detail-image img{height:260px}.detail-content{padding-top:40px}.panel{padding:20px}.cart-item{grid-template-columns:62px 1fr}.cart-item img{width:62px;height:62px}.cart-item .quantity{grid-column:2}.footer-grid{grid-template-columns:1fr 1fr;gap:25px;padding:45px 0}.footer-grid>div:first-child{grid-column:1/-1}.mobile-buy{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);padding:10px 18px;gap:10px;z-index:19}.mobile-buy .btn{flex:1;min-height:46px}.detail-actions{display:none}}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:22px 0}.form-grid label{display:grid;gap:7px;font-weight:600}.form-grid .wide{grid-column:1/-1}.form-grid input{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}.form-grid input:focus{outline:2px solid #69c2cb;outline-offset:1px}@media(max-width:640px){.form-grid{grid-template-columns:1fr}.form-grid .wide{grid-column:auto}}

/* Keyboard focus and reduced motion keep the shop usable beyond touch and mouse. */
a:focus-visible,button:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #148699;outline-offset:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
@media(max-width:640px){.mobile-buy{padding-bottom:max(10px,env(safe-area-inset-bottom))}.detail{padding-bottom:calc(95px + env(safe-area-inset-bottom))}}

.activation-section{padding:0 0 32px}.activation-card{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:26px 30px;background:#e4f2f2;border:1px solid #cde3e5;border-radius:18px}.activation-card h2{font-size:22px;margin:4px 0 8px}.activation-card p{max-width:700px}.activation-label{color:#0e6d7d;font-size:12px;font-weight:700;letter-spacing:.08em}.activation-link{white-space:nowrap;flex-shrink:0}@media(max-width:640px){.activation-card{align-items:stretch;flex-direction:column;gap:15px;padding:20px}.activation-card h2{font-size:20px}.activation-card p{font-size:13px}.activation-link{width:100%}}

@media(max-width:1120px){.desktop-nav{display:none}.header-inner{justify-content:space-between}.menu-toggle{display:block}}

.activation-actions{display:flex;gap:10px;flex-shrink:0}@media(max-width:640px){.activation-actions{display:grid;grid-template-columns:1fr 1fr}.activation-actions .activation-link{padding:0 8px;font-size:14px}}

.activation-shortcut{display:none}@media(max-width:640px){.header-actions{gap:6px}.activation-shortcut{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;min-height:40px;padding:0 9px;border:1px solid #bcdcdf;background:#e6f5f4;color:#0e6d7d;border-radius:9px;font-size:13px;font-weight:700}.header-inner{gap:6px}.cart-button{width:40px;height:40px}.menu-toggle{width:40px;height:40px}}