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32px));max-height:calc(100dvh - 40px);border:1px solid #dfe7f2;border-radius:24px;padding:0;overflow:hidden;color:var(--ink);box-shadow:0 25px 80px #0a203670}.review-dialog[open]{display:flex;flex-direction:column}.review-dialog::backdrop{background:#0c20369e;backdrop-filter:blur(5px)}.review-dialog-header{display:flex;align-items:center;gap:13px;padding:23px;background:#f5f8fd;border-bottom:1px solid var(--line);flex-shrink:0}.review-dialog-header>img{width:46px;height:46px;object-fit:cover;border-radius:50%}.review-dialog-header h2{font-size:23px;line-height:1.3}.review-dialog-header [data-review-date]{font-size:11px;color:var(--muted)}.review-close{margin-left:auto;background:#fff;border:1px solid #dae4f2;border-radius:10px;padding:12px;font-size:12px;font-weight:700;color:var(--blue);min-height:44px}.review-dialog-content{padding:25px;overflow-y:auto;overscroll-behavior:contain;min-height:0}.review-dialog-content .review-rating{margin-top:0;margin-bottom:22px}.full-review{margin:0;font-size:17px;line-height:1.85;white-space:pre-line}.review-dialog-content .review-photos{flex-wrap:wrap}.review-dialog-content .review-photo{width:85px;height:85px}.review-open{overflow:hidden;scrollbar-gutter:stable}.review-open .mobile-cta{visibility:hidden}.faq-list{background:#fff;border:1px solid var(--line);border-radius:23px;padding:6px 30px;box-shadow:var(--card-shadow)}.faq details{border-bottom:1px solid var(--line)}.faq details:last-child{border:0}.faq summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:80px;padding:20px 0;font-weight:700;font-size:17px;line-height:1.55}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:'+';color:var(--blue);font-size:25px;font-weight:400;flex-shrink:0}.faq details[open] summary:after{content:'−'}.faq details p{font-size:14px;color:var(--muted);line-height:1.85;padding:0 45px 23px 0;max-width:1050px}.final{margin-top:92px;background:#14304e;padding:42px;border-radius:28px;box-shadow:0 25px 55px -35px #17345770;color:#fff}.final-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:32px}.final .eyebrow{color:#b2c9e8}.final h2{font-size:41px}.final-intro>div>p:last-child{font-size:15px;color:#cbdaf0;line-height:1.8;margin-top:19px}.final-time{font-size:12px;padding:9px 15px;border:1px solid #ffffff40;border-radius:50px;white-space:nowrap}.final .quiz{color:var(--ink);box-shadow:none;border-color:#ffffff50}.final .quiz-aside{background:#dfe9fa}.footer{display:flex;align-items:center;justify-content:space-between;gap:25px;padding-block:35px 45px;color:var(--muted);font-size:12px}.footer strong{font-size:23px;color:var(--blue);font-weight:800}.footer p{margin-top:5px;line-height:1.7}.footer a[href^=tel]{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}.mobile-cta{display:none}
@media(max-width:1100px){.wrap{width:calc(100% - 56px)}.nav{gap:18px;font-size:12px}.hero-copy{padding:35px}.hero-visual{min-height:570px}.hero h1{font-size:45px}.proof-card{padding:24px}.proof-item{gap:12px;padding-inline:18px}.proof-item h2{font-size:16px}.proof-item p{font-size:12px}.proof-icon{width:36px;height:36px;border-radius:11px}.proof-icon svg{width:22px;height:22px}.pollutant-grid{gap:18px}.pollutant-body{padding:21px}.pollutant-body h3{font-size:23px}.quiz{grid-template-columns:minmax(0,1fr) 240px}.quiz-main{padding:30px}.quiz-aside{padding:28px 22px}.quiz-aside h3{font-size:28px}.quiz-aside>img{height:155px}.quality-layout{gap:35px}.quality-steps h3{font-size:24px}.control-panel{gap:22px;padding:28px}.control-panel h3{font-size:23px}.review-card{padding:23px}.review-text{font-size:14px}.selection-intro{gap:35px}.selection-intro h2{font-size:38px}.service-note{grid-template-columns:1fr 1.5fr}.service-note .button{grid-column:1/-1;justify-self:start}.final{padding:32px}.final h2{font-size:35px}}
@media(min-width:601px) and (max-width:850px){.nav{display:none}.menu{display:flex;width:39px;height:39px;border:1px solid #dce4ef;border-radius:11px;align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff}.menu span{display:block;width:17px;height:1.5px;background:var(--ink)}.location{margin-left:auto}.hero h1{font-size:37px}.hero-copy{padding:30px}.hero-visual{min-height:535px}.hero-lead{font-size:14px}.hero .eyebrow{font-size:10px}.hero .button{font-size:13px;padding-inline:18px}.hero h1 span{font-size:.62em}.proof-card{padding:22px;grid-template-columns:1fr;gap:18px}.proof-item{border:0;padding:0!important;align-items:center}.proof-item h2{font-size:17px;margin-bottom:4px}.proof-item p{font-size:13px}.proof-icon{width:43px;height:43px}.pollutant-grid{grid-template-columns:1fr 1fr}.pollutant-card>img{aspect-ratio:1.55}.pollutant-note{padding:26px;display:block}.pollutant-note .button{margin-top:18px}.selection-intro h2{font-size:31px}.section-heading>p:not(.eyebrow){font-size:15px}.quiz{grid-template-columns:minmax(0,1fr) 210px}.quiz-main{padding:25px}.quiz-aside{padding:25px 18px}.quiz-aside h3{font-size:26px}.quiz-aside p{font-size:12px}legend{font-size:23px}.answer strong{font-size:17px}.people{gap:8px}.people .answer{padding-inline:7px}.people .answer strong{font-size:26px}.people .answer>span{font-size:10px}.problem-answers .answer strong{font-size:11px}.quality-layout{gap:25px}.quality-steps h3{font-size:21px}.quality-steps p{font-size:13px}.quality-steps article{padding:18px 0}.control-panel{grid-template-columns:1fr 1fr;gap:25px}.control-panel h3 br{display:none}.work-photo{flex-basis:calc((100% - 28px)/3.777778)}.work-photo-wide{flex-basis:calc((100% - 28px)/3.777778 * 1.777778)}.works-track{gap:14px}.review-card{flex-basis:calc((100% - 22px)/2)}.final-intro h2{font-size:31px}.final{padding:26px}.footer{flex-wrap:wrap}.footer>div{width:45%}}
@media(min-width:851px) and (max-width:1199px){.work-photo{flex-basis:calc((100% - 42px)/4.777778)}.work-photo-wide{flex-basis:calc((100% - 42px)/4.777778 * 1.777778)}.works-track{gap:14px}}
@media(max-width:600px){.wrap{width:calc(100% - 32px)}.section{padding-top:62px}h2{font-size:32px;line-height:1.16}.eyebrow{font-size:11px;line-height:1.6;margin-bottom:13px}.header{padding-block:19px;gap:10px}.brand{gap:8px}.brand svg{width:25px;height:32px}.brand>span{font-size:24px}.brand small{font-size:8px;margin-top:6px;max-width:110px;line-height:1.4}.nav{display:none}.location{font-size:11px;margin-left:auto;max-width:120px}.location small{font-size:9px;margin-top:2px}.menu{display:flex;width:37px;height:37px;flex-shrink:0;background:#fff;border:1px solid #dce4ee;border-radius:11px;align-items:center;justify-content:center;gap:5px;flex-direction:column}.menu span{width:17px;height:1.5px;background:var(--ink);display:block}.hero-shell{display:flex;flex-direction:column;border-radius:23px;box-shadow:0 24px 45px -30px #15385d80}.hero-visual{order:-1;height:220px;min-height:0;width:100%;animation:portrait-appear .6s ease-out both}.hero-image{object-position:58% 30%;height:100%;width:100%}.hero-copy{padding:24px 24px 25px;margin-top:-17px;border-radius:23px 23px 0 0;background:#14304e;z-index:1;display:flex;flex-direction:column;align-self:auto;animation:offer-appear .6s ease-out .08s both}.hero .eyebrow{font-size:10px;margin-bottom:13px;order:0}.hero h1{font-size:32px;line-height:1.08;order:1}.hero h1 span{font-size:.65em;margin-top:12px;line-height:1.25}.hero .hero-action{order:2;margin-top:22px;gap:10px;align-items:stretch}.hero .button{font-size:14px;min-height:55px;padding:15px 10px;width:100%;border-radius:12px}.action-note{font-size:9px;text-align:center;line-height:1.5}.hero-lead{order:3;font-size:14px;line-height:1.75;margin-top:20px}.company-proof{margin-top:19px}.proof-card{grid-template-columns:1fr;padding:23px;gap:0;border-radius:20px;box-shadow:0 19px 40px -27px #17385870}.proof-item{padding:19px 0!important;gap:15px;border:0;border-bottom:1px solid #e5ebf4;align-items:flex-start}.proof-item:first-child{padding-top:0!important}.proof-item:last-child{padding-bottom:0!important;border:0}.proof-icon{width:42px;height:42px;border-radius:12px}.proof-icon svg{width:25px;height:25px}.proof-item h2{font-size:17px;line-height:1.35;letter-spacing:-.025em;margin:0 0 7px}.proof-item p{font-size:13px;line-height:1.65}.section-heading{margin-bottom:25px}.section-heading>p:not(.eyebrow){font-size:15px;line-height:1.75;margin-top:18px}.pollutant-grid{grid-template-columns:1fr;gap:23px}.pollutant-card{border-radius:21px;box-shadow:0 17px 36px -23px #18385865}.pollutant-card>img{aspect-ratio:1.65}.pollutant-body{padding:23px}.pollutant-body h3{font-size:26px}.pollutant-body>p{font-size:15px;line-height:1.75;margin:13px 0 21px}.pollutant-treatment{padding:14px 16px}.pollutant-treatment strong{font-size:12px}.pollutant-treatment p{font-size:13px}.pollutant-note{display:block;padding:25px 23px;margin-top:23px}.pollutant-note strong{font-size:18px;margin-bottom:10px}.pollutant-note p{font-size:14px;line-height:1.8}.pollutant-note .button{margin-top:19px;width:100%;font-size:13px}.selection-intro{display:block;margin-bottom:27px}.selection-intro .section-heading{margin-bottom:25px}.selection-intro h2{font-size:32px}.selection-intro .analysis-note{font-size:13px!important}.water-comparison{gap:12px}.water-comparison img{aspect-ratio:3/3.4;border-radius:16px;object-position:50% 66%}.water-comparison figcaption{font-size:11px;margin-bottom:9px}.quiz{display:block;border-radius:21px;box-shadow:0 20px 44px -28px #173b6c65}.quiz-main{padding:25px 21px;min-height:0}.quiz-meta{font-size:10px;gap:12px}.progress{margin:15px 0 25px}legend{font-size:25px;line-height:1.25}.question-note{font-size:13px;line-height:1.7;margin-top:10px}.answers{margin-top:22px;gap:9px}.answer{min-height:108px;padding:42px 13px 16px}.answer input{top:14px;left:14px;width:16px;height:16px}.answer strong{font-size:19px;line-height:1.3}.answer>span{font-size:11px;line-height:1.6}.people{grid-template-columns:1fr 1fr}.people .answer{min-height:101px;padding:34px 12px 14px}.people .answer strong{font-size:28px}.problem-answers{grid-template-columns:1fr;gap:9px}.problem-answers .answer{min-height:54px;padding:15px 12px 15px 42px}.problem-answers .answer strong{font-size:13px}.problem-answers .answer input{left:15px}.quiz-controls{margin-top:24px;gap:18px}.quiz-controls .button{min-width:145px;font-size:14px;padding-inline:21px}.quiz-aside{display:none}.contact-step h3{font-size:25px}.answer-summary{font-size:11px;line-height:1.8;padding:16px 0}.field-label{font-size:12px}.consent{font-size:10px;gap:10px;line-height:1.8}.demo-result h3{font-size:25px}.demo-result p{font-size:14px}.quality-layout{display:block}.analysis-photo{margin-bottom:26px;border-radius:21px}.analysis-photo img{aspect-ratio:1.3}.quality-steps article{padding:23px 0}.quality-steps h3{font-size:25px}.quality-steps p{font-size:15px;line-height:1.8;margin-top:12px}.control-panel{grid-template-columns:1fr;padding:25px;gap:0;margin-top:28px;border-radius:21px}.control-panel h3{font-size:24px;margin-bottom:18px}.control-panel h3 br{display:none}.control-panel p{font-size:13px;line-height:1.8;padding:15px 0;border-top:1px solid #d4dfee}.control-panel p strong{font-size:15px;margin-bottom:5px}.control-panel p:last-child{padding-bottom:0}.service-note{display:block;padding:26px 3px 0}.service-note h3{font-size:24px}.service-note p{font-size:14px;line-height:1.8;margin-top:13px}.service-note .button{margin-top:21px;width:100%;font-size:14px}.works-track{--photo-height:min(63vw,260px);gap:12px;padding-bottom:15px}.work-photo{flex:0 0 auto;width:calc(var(--photo-height)*.75);height:var(--photo-height);border-radius:16px}.work-photo-wide{width:calc(var(--photo-height)*1.333333);aspect-ratio:4/3}.reviews-heading{align-items:flex-start;flex-direction:column;gap:18px;margin-bottom:23px}.yandex-source{font-size:12px;padding:9px 14px}.yandex-source b{font-size:22px}.reviews-track{gap:14px;padding-bottom:20px}.review-card{flex-basis:calc(100% - 18px);height:485px;padding:25px;border-radius:21px}.review-text{font-size:15px;line-height:1.8}.review-author strong{font-size:15px}.review-author time{font-size:11px}.review-rating{margin-top:20px}.review-mark{font-size:9px}.review-stars{font-size:16px}.reviews-controls{grid-template-columns:70px 1fr 80px;gap:8px;font-size:10px}.review-pause{font-size:10px}.review-dots{gap:3px}.review-dots button{width:19px}.review-dots button:before{inset:12px 3px}.review-dialog{width:calc(100% - 24px);max-height:calc(100dvh - 24px);border-radius:20px}.review-dialog-header{padding:17px;gap:10px}.review-dialog-header h2{font-size:20px}.review-dialog-header>img{width:39px;height:39px}.review-close{font-size:11px;padding:10px}.review-dialog-content{padding:22px}.full-review{font-size:15px;line-height:1.8}.faq-list{padding:3px 22px;border-radius:21px}.faq summary{font-size:15px;line-height:1.65;min-height:81px;gap:20px;padding:20px 0}.faq details p{font-size:13px;padding:0 0 22px;line-height:1.85}.final{margin-top:62px;padding:29px 14px 14px;border-radius:24px}.final-intro{display:block;margin:0 10px 25px}.final h2{font-size:30px}.final .eyebrow{font-size:10px;margin-bottom:14px}.final-intro>div>p:last-child{font-size:14px;line-height:1.8;margin-top:17px}.final-time{display:inline-block;margin-top:20px;font-size:10px;padding:8px 13px}.final .quiz-main{padding:24px 18px}.final .quiz{border-radius:18px}.footer{flex-wrap:wrap;gap:23px;padding-block:32px 95px;font-size:11px}.footer>div{width:100%}.footer strong{font-size:25px}.footer a[href^=tel]{font-size:17px}.footer>a:last-child{margin-left:auto;font-size:11px}.mobile-cta{display:block;position:fixed;inset:auto 0 0;padding:11px 16px max(11px,env(safe-area-inset-bottom));background:#f7f9fcf0;border-top:1px solid #dde5f0;backdrop-filter:blur(8px);z-index:15;transition:transform .2s}.mobile-cta .button{width:100%;min-height:50px;font-size:14px}.mobile-cta.is-hidden{transform:translateY(110%);pointer-events:none}.desktop-break{display:none}}
@media(max-width:350px){.header{gap:8px}.location{max-width:100px}.brand>span{font-size:22px}.brand small{max-width:96px;font-size:7px}.hero-visual{height:190px}.hero-copy{padding:21px 21px 23px}.hero h1{font-size:29px}.hero .eyebrow{font-size:9px}.hero h1 span{font-size:.64em;margin-top:11px}.hero .hero-action{margin-top:20px}.hero .button{font-size:12px;min-height:53px}.hero .action-note{font-size:8px}.hero-lead{font-size:13px}.proof-card{padding:21px}.proof-item{gap:13px}.proof-item h2{font-size:16px}.proof-item p{font-size:12px}.proof-icon{width:37px;height:37px}.pollutant-body{padding:21px}.pollutant-body h3{font-size:25px}.quiz-main{padding:23px 18px}.quiz-meta{font-size:9px}.quiz-controls .button{min-width:135px;font-size:13px;padding-inline:18px}.review-card{padding:21px}.review-author strong{font-size:14px}.review-dialog-header{padding:15px 12px}.review-dialog-header h2{font-size:18px}.review-close{font-size:10px}.reviews-controls{grid-template-columns:55px 1fr 65px}.review-dots button{width:16px}.final h2{font-size:27px}}
@keyframes portrait-appear{from{opacity:.2;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes offer-appear{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-visual,.hero-copy{animation:none}.button,.progress>span,.mobile-cta{transition:none}.works-track,.reviews-track{scroll-behavior:auto}}
@media(min-width:601px) and (max-width:850px){.hero-shell{grid-template-columns:1fr}.hero-visual{order:-1;height:340px;min-height:0}.hero-image{object-position:58% 35%}.hero-copy{padding:35px}.hero h1{font-size:43px}.hero h1 span{font-size:.62em;margin-top:14px}.hero-lead{max-width:600px;font-size:16px}.hero-action{margin-top:24px}.hero .button{font-size:15px}.quiz{grid-template-columns:1fr}.quiz-aside{display:none}.quiz-main{padding:32px;min-height:410px}.problem-answers .answer strong{font-size:13px}}

@media(max-width:600px){.selection h2,.quality h2{font-size:clamp(28px,7.8vw,32px)}}
.review-card{height:455px}

/* Visible problem cases and contextual selection. */
.company-proof{margin-top:32px}
.pollutant-body .case-cta{margin-top:18px;width:100%;font-size:13px;min-height:48px;padding:13px 10px;text-align:center;line-height:1.5}
.case-selection{padding:12px 15px;margin:0 0 23px;border:1px solid #d8e4fa;border-radius:12px;background:#edf3ff;color:#294e81;font-size:13px;line-height:1.7;overflow-wrap:anywhere}
@media(max-width:600px){.company-proof{margin-top:26px}.pollutant-card>img{aspect-ratio:1.9}.pollutant-body{padding:21px}.pollutant-body>p{font-size:14px;margin:12px 0 17px}.pollutant-treatment{padding:12px 14px}.pollutant-body .case-cta{margin-top:16px;min-height:48px}.case-selection{font-size:12px;padding:11px 13px;margin-bottom:21px}}

/* Approved logo and named contact step — 21.10.2026. */
.brand{flex:0 0 auto}.brand .brand-logo{width:230px;height:auto;max-width:none;display:block}.contact-step input[name=name]{display:block;width:100%;min-height:55px;border:1px solid #d5dfeb;background:#f8faff;border-radius:12px;padding:14px 16px;font-size:16px;color:var(--ink);margin-bottom:17px}.contact-step input[name=name][aria-invalid=true]{border-color:#b72c3c}.work-photo{scroll-snap-align:start}
@media(max-width:600px){.brand .brand-logo{width:152px}.header{gap:12px}.location{margin-left:auto}.contact-step input[name=name]{min-height:54px}}
@media(max-width:350px){.brand .brand-logo{width:130px}.header{gap:9px}.location{font-size:10px}.location small{font-size:8px}}