@font-face{font-family:'KN';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/kn-600-vi.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}@font-face{font-family:'KN';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/kn-600-la.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:'KN';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/kn-700-vi.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}@font-face{font-family:'KN';font-style:normal;font-weight:700;font-display:swap;src:url(../fonts/kn-700-la.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:'SB';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/sb-400-vi.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}@font-face{font-family:'SB';font-style:normal;font-weight:400;font-display:swap;src:url(../fonts/sb-400-la.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:'SB';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/sb-600-vi.woff2) format('woff2');unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB}@font-face{font-family:'SB';font-style:normal;font-weight:600;font-display:swap;src:url(../fonts/sb-600-la.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{--bg:#f7f6fc;--paper:#fff;--ink:#1c1733;--mute:#5a5675;--line:#e4e1f2;--vio:#6d28d9;--vio-d:#5b21b6;--vio-l:#efe8fd;--green:#16a34a;--amber:#d97706;--red:#dc2626;--max:1080px;--g:20px;--head:'KN',system-ui,sans-serif;--ff:'SB',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:70px;overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--ink);font:400 18px/1.6 var(--ff);overflow-x:hidden}
a{color:var(--vio-d);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:6px}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3{font-family:var(--head);font-weight:600;line-height:1.15;margin:0 0 .5em}
h2{font-size:clamp(26px,3.4vw,36px)}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;z-index:99;background:#fff;padding:8px 14px}.skip:focus{left:8px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--g)}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;background:var(--vio);color:#fff;font-weight:600;border-radius:12px;padding:0 18px;min-height:46px;text-decoration:none}
.btn--sm{min-height:40px;font-size:15px}
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hd__in{display:flex;align-items:center;gap:18px;min-height:58px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:600 21px var(--head)}
.brand__mk{position:relative;width:30px;height:16px;border:2px solid var(--ink);border-radius:4px}
.brand__mk::after{content:'';position:absolute;right:-6px;top:3px;width:3px;height:6px;background:var(--ink);border-radius:0 2px 2px 0}
.brand__mk i{position:absolute;left:2px;top:2px;bottom:2px;width:65%;background:var(--green);border-radius:1px}
.hd__nav{margin-left:auto}
.hd__nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.hd__nav a{display:block;padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--mute);font-weight:600;font-size:16px}
.hd__nav a:hover{background:var(--vio-l);color:var(--vio-d)}
.hd__btn{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;position:relative}
.hd__btn span:first-child,.hd__btn span:first-child::before,.hd__btn span:first-child::after{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);content:''}
.hd__btn span:first-child{top:21px}.hd__btn span:first-child::before{top:-6px;left:0;right:0}.hd__btn span:first-child::after{top:6px;left:0;right:0}
.hero{padding:36px 0 20px;background:linear-gradient(135deg,var(--vio-l),#fff 60%)}
.hero__grid{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:30px;align-items:center}
.hero__h{font-size:clamp(34px,5vw,56px)}
.hero__h span{display:block;color:var(--vio)}
.hero__p{color:var(--mute);margin:0;max-width:600px}
.phone{justify-self:center;width:150px;height:270px;border:8px solid var(--ink);border-radius:30px;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;box-shadow:0 30px 50px -30px rgba(28,23,51,.6)}
.phone__bat{position:relative;width:70px;height:34px;border:3px solid var(--ink);border-radius:7px;padding:3px}
.phone__bat::after{content:'';position:absolute;right:-8px;top:9px;width:5px;height:11px;background:var(--ink);border-radius:0 3px 3px 0}
.phone__bat i{display:block;height:100%;width:80%;background:var(--green);border-radius:3px;transition:width .3s,background .3s}
.phone__bat i.is-mid{background:var(--amber)}.phone__bat i.is-low{background:var(--red)}
.phone b{font:600 28px var(--head)}
.sec{padding-top:40px;padding-bottom:10px}
.calc{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:18px;align-items:start}
.calc__in{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;display:grid;gap:14px}
.calc__in>label{display:block;font-weight:600}.calc__in>label input{display:block;margin-top:6px}
.calc__in input[type=number]{border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font:600 20px var(--head);max-width:200px}
.calc__in input[type=range]{accent-color:var(--vio);width:100%}
.calc fieldset{border:0;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.calc legend{font-weight:600;margin-bottom:6px;width:100%}
.calc fieldset label{display:inline-flex;align-items:center;gap:6px;border:1.5px solid var(--line);border-radius:12px;padding:0 12px;min-height:44px;font-size:16px;cursor:pointer}
.calc fieldset label:has(input:checked){border-color:var(--vio);background:var(--vio-l);color:var(--vio-d);font-weight:600}
.calc fieldset input{accent-color:var(--vio)}
.calc__out{background:var(--ink);color:#fff;border-radius:18px;padding:24px;position:sticky;top:76px}
.calc__lbl{margin:0;color:#c7c2e6;font-size:15px}
.calc__big{margin:4px 0;font:600 clamp(36px,5vw,52px)/1.1 var(--head);color:#86efac}
.calc__sub{font-size:14px;color:#c7c2e6;margin:0}
.chg .calc__sub{color:var(--mute);margin-top:10px}
.calc__tips{margin:14px 0 0;padding-left:18px;font-size:15px;color:#e8e5f8}
.chg{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}
.chg label{display:inline-flex;align-items:center;gap:10px;font-weight:600}
.chg select{border:1.5px solid var(--line);border-radius:10px;padding:8px 10px;min-height:44px}
.chg__bars{display:grid;gap:10px;margin-top:14px}
.bar{display:grid;grid-template-columns:90px minmax(0,1fr) 120px;align-items:center;gap:10px;font-size:16px}
.bar i{height:14px;border-radius:999px;background:var(--line);position:relative;overflow:hidden}
.bar i::after{content:'';position:absolute;inset:0 auto 0 0;width:var(--w);background:linear-gradient(90deg,var(--green),#4ade80);border-radius:999px}
.bar b{text-align:right}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.grid3 p{margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;font-size:16px;color:var(--mute)}
.grid3 b{display:block;font:600 19px var(--head);color:var(--ink);margin-bottom:4px}
.faq{display:grid;gap:8px;margin-bottom:24px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:2px 16px}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0;min-height:44px}
.faq p{margin:0 0 14px;color:var(--mute)}
.fb{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;flex-wrap:wrap;gap:14px 20px;align-items:center;justify-content:space-between}
.fb__head{display:flex;gap:12px;align-items:center}
.fb__ic{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--vio-l);color:var(--vio);flex:none}
.fb__t{font-size:21px;margin:0}
.fb__s{margin:2px 0 0;font-size:14px;color:var(--mute)}
.fb__btns{display:flex;gap:8px}
.fb__b{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:0 14px;font-weight:600;min-height:44px}
.fb__b--up[aria-pressed=true]{border-color:var(--green);color:var(--green)}.fb__b--down[aria-pressed=true]{border-color:var(--red);color:var(--red)}
.fb__form,.fb__thx{flex-basis:100%;margin:0}.fb__form{display:grid;gap:8px}
.fb__form textarea{border:1px solid var(--line);border-radius:12px;padding:10px;width:100%}
.fb__thx{color:var(--green);font-weight:600}
.pg{max-width:800px;padding-top:40px}.pg__t{font-size:clamp(30px,4vw,44px)}.prose{overflow-wrap:anywhere}
.list{list-style:none;padding:0}.list li{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:10px 0}
.pg--404{text-align:center}.code404{font:600 90px/1 var(--head);color:var(--vio);margin:0}
.ft{margin-top:50px;background:var(--ink);color:#c7c2e6;padding:28px 0}
.ft p{margin:0 0 10px;font-size:15px;max-width:860px}.ft__copy{opacity:.7}
@media (max-width:860px){
 .hd__btn{display:block;margin-left:auto}
 .hd__nav{position:absolute;left:0;right:0;top:58px;background:#fff;border-bottom:1px solid var(--line);display:none;padding:6px var(--g) 12px}
 .hd__nav.is-open{display:block}.hd__nav ul{flex-direction:column}.hd__nav a{padding:12px 4px}
 .hero__grid,.calc,.grid3{grid-template-columns:minmax(0,1fr)}
 .phone{display:none}
 .calc__out{position:static}
}
@media (max-width:480px){:root{--g:14px}.bar{grid-template-columns:72px minmax(0,1fr) 100px;font-size:14px}}