/* Bọt Xanh - template gu-01 (thietkeweb.dev). Mobile-first, no framework */
:root{--teal:#14b8a6;--teal-d:#0e8f81;--deep:#0b4f4a;--mint:#e8f8f5;--cream:#f6fdfb;--sun:#ffd23f;--sun-d:#f2bf1b;--coral:#ff7a59;--ink:#0f3b38;--muted:#4f7571;--line:#cdebe6;--font:"Nunito",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--head:"Baloo 2","Nunito",system-ui,sans-serif;--hh:70px;--r:26px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hh) + 8px);-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:16.5px;line-height:1.6;color:var(--ink);background:var(--cream);-webkit-font-smoothing:antialiased;overflow-x:clip}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;font-family:var(--head);font-weight:800;line-height:1.08;text-wrap:balance}
h2{font-size:clamp(30px,4.8vw,46px)}h3{font-size:21px;font-weight:700}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
[hidden]{display:none!important}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px;top:0;z-index:999;background:var(--deep);color:#fff;padding:10px 16px;border-radius:0 0 12px 0}.skip:focus{left:0}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 28px;border-radius:999px;border:0;font-family:var(--head);font-weight:700;font-size:17px;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s;line-height:1.1;text-align:center}
.btn:hover{transform:translateY(-2px)}
.btn--teal{background:var(--teal);color:#fff;box-shadow:0 8px 0 -2px var(--teal-d)}.btn--teal:hover{background:var(--teal-d)}
.btn--sun{background:var(--sun);color:var(--deep);box-shadow:0 8px 0 -2px var(--sun-d)}.btn--sun:hover{background:var(--sun-d)}
.btn--line{background:#fff;border:2px solid var(--teal);color:var(--teal-d);min-height:48px}.btn--line:hover{background:var(--teal);color:#fff}
.btn--sm{min-height:44px;padding:8px 20px;font-size:16px;box-shadow:none}.btn--block{width:100%}
.eyebrow{display:inline-block;background:var(--mint);color:var(--teal-d);border-radius:999px;padding:4px 14px;font-weight:800;font-size:13.5px;margin:0 0 12px}.eyebrow--w{background:rgba(255,255,255,.2);color:#fff}
.pill{display:inline-block;background:#fff;color:var(--teal-d);border-radius:999px;padding:6px 16px;font-weight:800;font-size:14px;margin:0 0 18px;box-shadow:0 6px 16px -10px rgba(14,143,129,.7)}.pill--l{background:var(--mint);box-shadow:none;margin-bottom:12px}
.header{position:sticky;top:0;z-index:50;background:rgba(246,253,251,.96);backdrop-filter:blur(10px);border-bottom:2px solid var(--line)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--hh);gap:12px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:0}
.logo__mark{width:42px;height:42px;flex:none}
.logo__text{font-family:var(--head);font-size:26px;font-weight:800;line-height:1;display:flex;flex-direction:column;color:var(--deep)}
.logo__text small{font-family:var(--font);font-size:11px;font-weight:700;color:var(--muted);margin-top:4px;white-space:nowrap}
.header__actions{display:flex;align-items:center;gap:8px}.hdr-cta{display:none}
.burger{width:46px;height:46px;border:0;background:var(--mint);border-radius:50%;display:grid;place-content:center;gap:5px;cursor:pointer}
.burger span{display:block;width:20px;height:2.5px;background:var(--deep);border-radius:2px;transition:transform .3s,opacity .3s}
.menu-open .burger span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}.menu-open .burger span:nth-child(2){opacity:0}.menu-open .burger span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
.nav{position:absolute;top:100%;left:12px;right:12px;background:#fff;border-radius:0 0 var(--r) var(--r);padding:6px 20px 20px;box-shadow:0 24px 40px -24px rgba(11,79,74,.5);opacity:0;transform:translateY(-8px);visibility:hidden;transition:opacity .25s,transform .25s,visibility .25s}
.menu-open .nav{opacity:1;transform:none;visibility:visible}
.nav li a,.nav__tel{display:block;padding:14px 4px;font-family:var(--head);font-weight:700;font-size:19px;border-bottom:2px dashed var(--line)}.nav__tel{color:var(--coral);border:0}
@media(max-width:480px){.logo__text small{display:none}}
@media(min-width:1000px){.nav{position:static;opacity:1;transform:none;visibility:visible;background:none;box-shadow:none;padding:0;display:flex;align-items:center;gap:26px}.nav ul{display:flex;gap:6px}.nav li a{border:0;padding:8px 16px;font-size:17px;border-radius:999px}.nav li a:hover{background:var(--mint);color:var(--teal-d)}.nav__tel{display:none}.hdr-cta{display:inline-flex}.burger{display:none}}
/* hero */
.hero{position:relative;background:linear-gradient(180deg,var(--mint),var(--cream));padding-bottom:30px;overflow:hidden}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:var(--teal);opacity:.12}.hero::before{width:360px;height:360px;right:-120px;top:-80px}.hero::after{width:180px;height:180px;left:-60px;bottom:90px;background:var(--sun);opacity:.3}
.hero__grid{position:relative;display:grid;gap:30px;padding-top:38px;padding-bottom:40px;align-items:center}
@media(min-width:900px){.hero__grid{grid-template-columns:1.05fr .95fr;gap:50px;padding-top:56px}}
.hero h1{font-size:clamp(46px,8.4vw,86px);margin-bottom:16px;color:var(--deep)}.hero h1 em{font-style:normal;color:var(--teal);display:block}
.hero__lead{font-size:19px;color:var(--muted);max-width:480px}
.hero__pts{display:grid;gap:8px;margin-top:18px}.hero__pts li{display:flex;gap:10px;align-items:center;font-weight:800}.hero__pts li::before{content:"";width:26px;height:26px;border-radius:50%;background:var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.500l4 4 8-9' fill='none' stroke='white' stroke-width='3.500' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/17px no-repeat;flex:none}
.hero__media{position:relative;max-width:520px;margin:0 auto;width:100%}
.blob{border-radius:48% 52% 45% 55%/55% 45% 55% 45%;overflow:hidden;aspect-ratio:1/1;border:8px solid #fff;box-shadow:0 30px 50px -28px rgba(14,143,129,.7)}.blob img{width:100%;height:100%;object-fit:cover}
.hero__b{position:absolute;background:var(--sun);color:var(--deep);border-radius:22px;padding:8px 16px;font-weight:800;font-size:13px;line-height:1.1;box-shadow:0 12px 20px -10px rgba(0,0,0,.35)}.hero__b b{display:block;font-family:var(--head);font-size:28px}
.hero__b--a{left:-4px;top:14%;transform:rotate(-6deg)}.hero__b--b{right:-4px;bottom:12%;background:#fff;transform:rotate(5deg)}
.quick{position:relative;display:grid;gap:12px;background:#fff;border-radius:var(--r);padding:16px;box-shadow:0 26px 40px -26px rgba(11,79,74,.6);border:2px solid var(--line)}
@media(min-width:800px){.quick{grid-template-columns:1.3fr 1fr 1fr auto;align-items:end}}
.quick label,.field label{display:block;font-weight:800;font-size:13px;margin:0 0 4px 10px;color:var(--muted)}
select,.field input,.field textarea{width:100%;border:2px solid var(--line);border-radius:18px;padding:12px 16px;background:#fff;font-size:16px;font-weight:600}
select{appearance:auto}
/* sections */
.section{padding:72px 0}.section--mint{background:var(--mint)}.section--teal{background:var(--teal);color:#fff}
.head{margin-bottom:30px}
.svs{display:grid;gap:18px}@media(min-width:640px){.svs{grid-template-columns:1fr 1fr}}@media(min-width:1000px){.svs{grid-template-columns:repeat(3,1fr)}}
.sv{background:#fff;border-radius:var(--r);border:2px solid var(--line);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}.sv:hover{transform:translateY(-5px);box-shadow:0 24px 36px -26px rgba(11,79,74,.6)}
.sv__img{position:relative;display:block;margin:10px 10px 0;border-radius:calc(var(--r) - 8px);overflow:hidden}.sv__img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.sv__tag{position:absolute;left:10px;top:10px;background:var(--coral);color:#fff;border-radius:999px;padding:3px 12px;font-style:normal;font-weight:800;font-size:13px}
.sv__b{padding:16px 20px 20px;display:flex;flex-direction:column;flex:1}.sv h3{margin-bottom:6px}.sv p{color:var(--muted);font-size:15px;margin-bottom:14px}
.sv__f{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.sv__f b{font-family:var(--head);font-size:18px;color:var(--teal-d)}
/* pricing */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tabs button{border:2px solid var(--teal);background:#fff;color:var(--teal-d);border-radius:999px;padding:10px 22px;font-family:var(--head);font-weight:700;font-size:17px;cursor:pointer}.tabs button[aria-selected=true]{background:var(--teal);color:#fff}
.price{display:grid;gap:18px}@media(min-width:900px){.price{grid-template-columns:1.4fr 1fr;align-items:start}}
.price__t{background:#fff;border-radius:var(--r);overflow:hidden;border:2px solid var(--line)}.price__t div{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:15px 20px;border-bottom:2px dashed var(--line)}.price__t div:last-child{border:0}.price__t span{font-weight:700}.price__t b{font-family:var(--head);font-size:22px;color:var(--teal-d);text-align:right}.price__t small{font-family:var(--font);font-size:13px;font-weight:700;color:var(--muted);margin-left:3px}
.est{background:var(--deep);color:#fff;border-radius:var(--r);padding:22px}.est label{display:block;font-weight:700;margin-bottom:10px}.est label b{font-family:var(--head);color:var(--sun);font-size:22px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:12px;border-radius:99px;background:linear-gradient(90deg,var(--sun) var(--pc,14%),rgba(255,255,255,.25) var(--pc,14%));margin:8px 0 14px;outline-offset:6px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;border-radius:50%;background:#fff;border:6px solid var(--teal);cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.3)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:6px solid var(--teal);cursor:pointer}
.est__r{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px}.est__r b{font-family:var(--head);font-size:34px;color:var(--sun)}.est p{font-size:14px;color:#bfe6e0}.est .est__p{font-size:16px;color:#e4f8f4}
/* how */
.how{display:grid;gap:34px;align-items:center}@media(min-width:900px){.how{grid-template-columns:1.1fr .9fr;gap:60px}}
.steps{margin-top:24px;display:grid;gap:14px}.steps li{display:grid;grid-template-columns:54px 1fr;column-gap:16px;background:#fff;border:2px solid var(--line);border-radius:22px;padding:16px 18px}.steps b{grid-row:span 2;width:54px;height:54px;border-radius:50%;background:var(--sun);color:var(--deep);display:grid;place-content:center;font-family:var(--head);font-size:28px}.steps h3{font-size:20px}.steps p{margin:0;color:var(--muted);font-size:15px}
.how__ph{position:relative;max-width:440px;justify-self:center;width:100%}.how__ph img{width:100%;aspect-ratio:18/25;object-fit:cover;border-radius:200px 200px var(--r) var(--r);border:8px solid #fff;box-shadow:0 30px 50px -30px rgba(14,143,129,.7)}
.how__ph figcaption{position:absolute;left:14px;right:14px;bottom:18px;background:#fff;border-radius:20px;padding:12px 16px;font-size:14px}.how__ph b{display:block;font-family:var(--head);font-size:18px;color:var(--teal-d)}
figure{margin:0}
.care{display:grid;gap:30px;align-items:center}@media(min-width:900px){.care{grid-template-columns:.9fr 1.1fr;gap:56px}}
.care__ph img{width:100%;aspect-ratio:10/7;object-fit:cover;border-radius:var(--r);border:8px solid rgba(255,255,255,.4)}
.care__l{display:grid;gap:12px;margin-top:20px}.care__l li{background:rgba(255,255,255,.14);border-radius:20px;padding:14px 18px;font-size:15.5px}.care__l b{display:block;font-family:var(--head);font-size:20px;color:var(--sun)}
.revs{display:grid;gap:16px}@media(min-width:800px){.revs{grid-template-columns:repeat(3,1fr)}}
.revs figure{background:#fff;border:2px solid var(--line);border-radius:var(--r);padding:20px 22px;position:relative}.revs figure::before{content:"\201C";position:absolute;right:16px;top:-6px;font-family:var(--head);font-size:80px;color:var(--teal);opacity:.25;line-height:1}
.revs blockquote{margin:0 0 10px;font-weight:700;font-size:17px;line-height:1.45}.revs figcaption{color:var(--muted);font-size:14px;font-weight:700}
/* form */
.book{display:grid;gap:28px;align-items:center}@media(min-width:900px){.book{grid-template-columns:.9fr 1.1fr;gap:56px}}
.book__p{font-size:18px;color:var(--muted)}
.form{display:grid;gap:12px;background:#fff;border-radius:var(--r);padding:24px;border:2px solid var(--line);box-shadow:0 26px 40px -30px rgba(11,79,74,.6)}
.field input[aria-invalid=true]{border-color:#e0432a}.err{display:block;color:#e0432a;font-size:12.5px;margin-left:10px;font-weight:700}
.row2{display:grid;gap:12px}@media(min-width:520px){.row2{grid-template-columns:1fr 1fr}}
.form__ok{background:#dcf7ea;color:#14603a;border-radius:18px;padding:12px 16px;font-size:15px;font-weight:700}
/* faq */
.faq{display:grid;gap:26px}@media(min-width:900px){.faq{grid-template-columns:.8fr 1.2fr;gap:56px}}
.faq details{background:#fff;border:2px solid var(--line);border-radius:22px;margin-bottom:10px;padding:0 20px}
summary{list-style:none;cursor:pointer;padding:16px 36px 16px 0;font-family:var(--head);font-weight:700;font-size:19px;position:relative}summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:50%;background:var(--mint);color:var(--teal-d);display:grid;place-content:center;font-size:22px;line-height:1}details[open] summary::after{content:"\2212"}
details p{color:var(--muted);padding-bottom:16px;margin:0}
/* footer */
.footer{background:var(--deep);color:#bfe6e0;padding:54px 0 24px;border-radius:40px 40px 0 0}
.footer__grid{display:grid;gap:28px}@media(min-width:800px){.footer__grid{grid-template-columns:1.4fr 1fr 1.2fr}}
.footer h3{font-family:var(--font);font-size:14px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:12px;color:var(--sun);font-weight:800}.footer li{margin-bottom:8px;font-size:15px}.footer p{font-size:15px;margin-top:12px}.footer a:hover{color:var(--sun)}.logo--ft .logo__text{color:#fff}.logo--ft .logo__text small{color:#9fd3cc}
.footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;border-top:2px dashed rgba(255,255,255,.2);margin-top:30px;padding-top:18px;font-size:13px}.footer__bottom p{margin:0}
/* detail */
.sp{padding:20px 0 56px}
.bc{font-size:13.5px;color:var(--muted);margin:0 0 16px;display:flex;flex-wrap:wrap;gap:6px;font-weight:700}.bc a{color:var(--teal-d)}
.sp__grid{display:grid;gap:28px}.sp__grid>*{min-width:0}@media(min-width:900px){.sp__grid{grid-template-columns:1fr 1fr;gap:56px;align-items:start}}
.gal__main{border-radius:var(--r);overflow:hidden;border:6px solid #fff;box-shadow:0 26px 40px -28px rgba(14,143,129,.7)}.gal__main img{width:100%;aspect-ratio:4/3;object-fit:cover}
.gal__th{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}.gal__th button{padding:0;border:3px solid transparent;border-radius:18px;background:none;aspect-ratio:1/1;cursor:pointer;overflow:hidden}.gal__th button.is-on{border-color:var(--teal)}.gal__th img{width:100%;height:100%;object-fit:cover}
.inc{display:grid;gap:8px;margin-top:18px}.inc li{background:var(--mint);border-radius:16px;padding:10px 16px 10px 44px;position:relative;font-weight:700;font-size:15px}.inc li::before{content:"";position:absolute;left:12px;top:50%;width:22px;height:22px;transform:translateY(-50%);border-radius:50%;background:var(--teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12.500l4 4 8-9' fill='none' stroke='white' stroke-width='3.500' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/15px no-repeat}
.sp h1{font-size:clamp(38px,6vw,58px);color:var(--deep)}.sp__code{font-size:13px;color:var(--muted);margin:2px 0 6px;font-weight:700}
.sp__price{margin:8px 0 10px}.sp__price b{font-family:var(--head);font-size:34px;color:var(--teal-d);display:block;line-height:1.15}.sp__price small{color:var(--muted);font-weight:700}
.sp__lead{color:var(--muted)}
.calc{background:var(--mint);border-radius:var(--r);padding:18px;display:grid;gap:14px;margin:6px 0 16px}
.opt{border:0;padding:0;margin:0;min-width:0}.opt legend{font-weight:800;font-size:13px;color:var(--muted);padding:0;margin-bottom:8px}
.seg,.chk{display:flex;flex-wrap:wrap;gap:8px}.seg label,.chk label{cursor:pointer}.seg input,.chk input{position:absolute;opacity:0}
.seg span,.chk span{display:flex;flex-direction:column;border:2px solid var(--line);background:#fff;border-radius:18px;padding:8px 16px;font-weight:800;font-size:15px;line-height:1.3}.seg small,.chk small{font-size:12.5px;font-weight:700;color:var(--muted)}
.seg input:checked+span,.chk input:checked+span{background:var(--teal);border-color:var(--teal);color:#fff}.seg input:checked+span small,.chk input:checked+span small{color:#d8fbf6}
.seg input:focus-visible+span,.chk input:focus-visible+span{outline:3px solid var(--coral);outline-offset:2px}
.qty-row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:800}
.qty{display:inline-flex;align-items:center;background:#fff;border-radius:999px;border:2px solid var(--line);padding:3px}.qty button{width:42px;height:42px;border-radius:50%;border:0;background:var(--teal);color:#fff;font-family:var(--head);font-size:26px;line-height:1;cursor:pointer}.qty output{min-width:70px;text-align:center;font-family:var(--head);font-size:22px;font-weight:800}
.total{display:flex;justify-content:space-between;align-items:baseline;background:var(--deep);color:#fff;border-radius:20px;padding:14px 20px}.total b{font-family:var(--head);font-size:32px;color:var(--sun)}
.order{display:grid;gap:12px;margin:0 0 12px;background:#fff;border:2px solid var(--line);border-radius:var(--r);padding:20px}.order h2{font-size:28px}
.sp__btns{display:flex;flex-wrap:wrap;gap:8px}.sp__btns .btn{flex:1 1 140px}
.h2s{font-size:34px;margin:44px 0 14px}
.rel{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}@media(min-width:900px){.rel{grid-template-columns:repeat(4,1fr)}}.rel a{display:block}.rel img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:22px}.rel span{display:block;font-family:var(--head);font-weight:700;margin-top:8px;line-height:1.2;font-size:18px}.rel small{display:block;font-family:var(--font);font-weight:700;color:var(--muted);font-size:13.5px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}