.ab-page {
    --ab-ink: #101C24;
    --ab-night: #0B161D;
    --ab-panel: #10232D;
    --ab-panel-2: #17313D;
    --ab-paper: #F3F6F7;
    --ab-white: #FFFFFF;
    --ab-muted: #A8BAC3;
    --ab-body: #42545E;
    --ab-line: #CBD6DB;
    --ab-orange: #F58334;
    --ab-orange-dark: #C85C17;
    --ab-blue: #63B1CC;
    --ab-blue-pale: #A5D7E7;
    --ab-danger: #D75449;
    overflow: hidden;
    background: var(--ab-paper);
    color: var(--ab-body);
    font-family: "Lato", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.7;
}

.ab-page *, .ab-page *::before, .ab-page *::after { box-sizing: border-box; }
.ab-page h1, .ab-page h2, .ab-page h3, .ab-page p { margin-top: 0; }
.ab-page h1, .ab-page h2, .ab-page h3 { color: var(--ab-ink); font-family: "Raleway", Arial, sans-serif; letter-spacing: -.035em; }
.ab-page a { text-decoration: none; }
.ab-page strong { color: inherit; }
.ab-shell { width: min(1320px, calc(100% - 64px)); margin: 0 auto; }
.ab-section { padding: 108px 0; }
.ab-section--light { background: var(--ab-white); }
.ab-section-label, .ab-data-label { color: var(--ab-orange); font-family: "Raleway", Arial, sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .18em; line-height: 1.2; text-transform: uppercase; }

.ab-breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; padding: 26px 0 20px; color: #879BA6; font-size: .76rem; letter-spacing: .04em; }
.ab-breadcrumbs a { color: #BDD0D8; }
.ab-breadcrumbs a:hover { color: var(--ab-orange); }

.ab-hero { position: relative; isolation: isolate; min-height: 780px; background: var(--ab-night); color: #D8E3E7; }
.ab-hero::before { position: absolute; z-index: -1; inset: 0; background-image: linear-gradient(rgba(99,177,204,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(99,177,204,.045) 1px, transparent 1px); background-size: 64px 64px; content: ""; mask-image: linear-gradient(to bottom, #000 0%, transparent 78%); }
.ab-hero::after { position: absolute; z-index: -1; right: -280px; top: -330px; width: 720px; height: 720px; border: 1px solid rgba(99,177,204,.16); border-radius: 50%; box-shadow: 0 0 0 90px rgba(99,177,204,.025), 0 0 0 180px rgba(245,131,52,.018); content: ""; }
.ab-hero__layout { display: grid; grid-template-columns: .85fr 1.25fr; gap: 62px; align-items: center; padding: 42px 0 100px; }
.ab-kicker { margin-bottom: 22px; }
.ab-kicker span { display: inline-flex; align-items: center; gap: 12px; color: var(--ab-blue-pale); font-family: "Raleway", Arial, sans-serif; font-size: .76rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; }
.ab-kicker span::before { width: 34px; height: 2px; background: var(--ab-orange); content: ""; }
.ab-hero h1 { margin-bottom: 30px; color: #F7FAFB; font-size: clamp(3rem, 5.2vw, 5.65rem); font-weight: 600; line-height: .98; }
.ab-hero h1 span { display: block; margin-top: 10px; color: var(--ab-blue-pale); }
.ab-hero__lead { max-width: 680px; margin-bottom: 32px; color: #C2D1D7; font-size: 1.16rem; line-height: 1.72; }
.ab-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-bottom: 25px; }
.ab-button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; gap: 16px; padding: 13px 22px; border: 1px solid transparent; border-radius: 4px; font-family: "Raleway", Arial, sans-serif; font-size: .83rem; font-weight: 700; letter-spacing: .035em; transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease; }
.ab-button:hover { transform: translateY(-2px); }
.ab-button--primary { background: var(--ab-orange); color: #101820; }
.ab-button--primary:hover { background: #FF9A55; color: #101820; }
.ab-button--secondary { border-color: rgba(197,216,224,.32); color: #E1EBEF; }
.ab-button--secondary:hover { border-color: var(--ab-blue); color: var(--ab-blue-pale); }
.ab-button:focus-visible, .ab-page a:focus-visible, .ab-page summary:focus-visible { outline: 3px solid var(--ab-blue-pale); outline-offset: 4px; }
.ab-hero__note { max-width: 630px; margin: 0; padding-left: 15px; border-left: 2px solid var(--ab-orange); color: #8EA4AF; font-size: .84rem; line-height: 1.6; }

.ab-system { overflow: hidden; border: 1px solid rgba(141,177,190,.22); border-radius: 9px; background: #FFFFFF; box-shadow: 0 30px 80px rgba(0,0,0,.32); }
.ab-system__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 22px 25px; border-bottom: 1px solid rgba(141,177,190,.18); }
.ab-system__header { background: linear-gradient(145deg, #16313D, #0A1820); }
.ab-system__header strong { display: block; margin-top: 5px; color: #E6F0F3; font-family: "Raleway", Arial, sans-serif; font-size: 1rem; }
.ab-live-label { display: inline-flex; align-items: center; gap: 7px; color: #8DA6B1; font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.ab-live-label i { width: 7px; height: 7px; border-radius: 50%; background: var(--ab-blue); box-shadow: 0 0 10px var(--ab-blue); }
.ab-system__illustration { margin: 0; background: #FFFFFF; }
.ab-system__illustration img { display: block; width: 100%; height: auto; }
.ab-system__illustration figcaption { padding: 11px 22px 13px; border-top: 1px solid #DDE5E8; color: #687A83; font-size: .68rem; line-height: 1.45; }
.ab-system__diagram { display: none; }
.ab-svg-grid path { fill: none; stroke: #79A0AF; stroke-opacity: .07; stroke-width: 1; }
.ab-exhaust-line { fill: none; stroke: url(#ab-hot-pipe); stroke-linecap: round; stroke-width: 17; opacity: .5; }
.ab-flow-pulse { fill: none; stroke: #F9C27A; stroke-dasharray: 4 36; stroke-linecap: round; stroke-width: 5; filter: url(#ab-glow); animation: ab-flow 3s linear infinite; }
.ab-module { fill: #102832; stroke: #4F7F91; stroke-width: 2; }
.ab-module--compact { fill: #122D38; }
.ab-engine-mark, .ab-filter-mark, .ab-clean-mark { fill: none; stroke: #F58334; stroke-linecap: round; stroke-linejoin: round; stroke-width: 4; }
.ab-filter-mark { stroke: #D19A55; stroke-width: 3; }
.ab-clean-mark { stroke: #80C7DD; }
.ab-svg-label { fill: #E3EDF1; font-family: "Raleway", Arial, sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 1px; }
.ab-svg-label--dark { fill: #10212A; }
.ab-svg-small { fill: #87A2AD; font-family: "Lato", Arial, sans-serif; font-size: 10px; letter-spacing: .7px; }
.ab-sensor rect { fill: #173947; stroke: #63B1CC; stroke-width: 2; }
.ab-sensor path { fill: none; stroke: #63B1CC; stroke-width: 3; }
.ab-sensor text { fill: #D9ECF2; font-family: "Raleway", Arial, sans-serif; font-size: 11px; font-weight: 700; }
.ab-sensor text.ab-svg-small { fill: #87A2AD; font-family: "Lato", Arial, sans-serif; font-size: 10px; }
.ab-injector path { fill: #173947; stroke: #A5D7E7; stroke-linejoin: round; stroke-width: 3; }
.ab-injector .ab-spray { fill: none; stroke: #63B1CC; stroke-dasharray: 3 8; stroke-width: 3; animation: ab-spray 1.5s ease-in-out infinite; }
.ab-tank { fill: #112A34; stroke: #5FAFCB; stroke-width: 2; }
.ab-fluid { fill: #76BED7; opacity: .86; }
.ab-droplet { fill: #E8F8FC; opacity: .82; }
.ab-dose-line { fill: none; stroke: #63B1CC; stroke-dasharray: 8 10; stroke-width: 4; animation: ab-dose 2.2s linear infinite; }
.ab-catalyst { fill: url(#ab-catalyst-fill); stroke: #63B1CC; stroke-width: 2; }
.ab-reaction-particles circle { fill: #F58334; filter: url(#ab-glow); animation: ab-particle 2.4s ease-in-out infinite alternate; }
.ab-reaction-particles circle:nth-child(even) { fill: #63B1CC; animation-delay: -.7s; }
.ab-control-loop rect { fill: rgba(18,45,56,.84); stroke: #426D7D; }
.ab-control-loop path { fill: none; stroke: #426D7D; stroke-dasharray: 3 4; }
.ab-system__legend { display: none; }
.ab-system__legend span { display: inline-flex; align-items: center; gap: 8px; }
.ab-key { display: inline-block; width: 24px; height: 3px; }
.ab-key--hot { background: var(--ab-orange); }
.ab-key--fluid { background: var(--ab-blue); }
.ab-key--clean { background: var(--ab-blue-pale); }
@keyframes ab-flow { to { stroke-dashoffset: -80; } }
@keyframes ab-dose { to { stroke-dashoffset: -72; } }
@keyframes ab-spray { 0%, 100% { opacity: .28; } 50% { opacity: 1; } }
@keyframes ab-particle { from { opacity: .35; transform: translateY(5px); } to { opacity: 1; transform: translateY(-5px); } }

.ab-correction { padding: 34px 0; border-bottom: 1px solid #D4DEE2; background: #E8EEF1; }
.ab-correction__layout { display: grid; grid-template-columns: 240px 1fr; gap: 40px; align-items: start; }
.ab-correction h2 { margin: 0 0 6px; font-size: 1.4rem; }
.ab-correction p { max-width: 950px; margin: 0; color: #52636C; font-size: .96rem; }

.ab-intro-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 90px; align-items: start; }
.ab-section-heading h2, .ab-modification__intro h2, .ab-prevention__layout h2, .ab-sources h2 { margin: 12px 0 22px; font-size: clamp(2.3rem, 4vw, 4.2rem); font-weight: 600; line-height: 1.06; }
.ab-section-heading > p:last-child { color: #697982; }
.ab-fact-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ab-line); border-left: 1px solid var(--ab-line); }
.ab-fact-grid article { min-height: 240px; padding: 31px; border-right: 1px solid var(--ab-line); border-bottom: 1px solid var(--ab-line); background: #F8FAFB; }
.ab-fact-grid__value { display: block; margin-bottom: 24px; color: var(--ab-orange-dark); font-family: "Raleway", Arial, sans-serif; font-size: 1.65rem; font-weight: 700; }
.ab-fact-grid h3 { margin-bottom: 10px; font-size: 1.14rem; }
.ab-fact-grid p { margin: 0; color: #697982; font-size: .91rem; line-height: 1.62; }

.ab-chemistry { background: #E9EFF2; }
.ab-section-heading--wide { display: grid; grid-template-columns: 1fr .72fr; gap: 100px; align-items: end; margin-bottom: 55px; }
.ab-section-heading--wide h2 { margin-bottom: 0; }
.ab-section-heading--wide > p { margin-bottom: 4px; }
.ab-reaction { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 0 0 28px; padding: 0; list-style: none; }
.ab-reaction li { position: relative; min-height: 440px; padding: 28px; border: 1px solid #C7D3D9; background: #F7F9FA; }
.ab-reaction__number { display: block; color: #8C9CA4; font-family: "Raleway", Arial, sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .13em; }
.ab-reaction__graphic { display: flex; height: 120px; align-items: center; justify-content: center; gap: 16px; margin: 26px 0; border-top: 1px solid #D7E0E4; border-bottom: 1px solid #D7E0E4; color: #70848E; font-family: "Raleway", Arial, sans-serif; font-size: .72rem; letter-spacing: .12em; }
.ab-drop-icon { position: relative; width: 43px; height: 55px; border-radius: 50% 50% 50% 8px; background: var(--ab-blue); transform: rotate(-45deg); }
.ab-vapour { width: 42px; height: 54px; background: repeating-radial-gradient(ellipse at 50% 120%, transparent 0 7px, rgba(245,131,52,.7) 8px 10px, transparent 11px 16px); }
.ab-reaction__formula { flex-direction: column; gap: 5px; color: var(--ab-ink); font-size: .94rem; letter-spacing: .02em; }
.ab-reaction__formula b { color: var(--ab-orange); font-size: 1.4rem; }
.ab-reaction h3 { margin-bottom: 13px; font-size: 1.28rem; }
.ab-reaction p { margin: 0; color: #5B6D77; font-size: .91rem; line-height: 1.68; }
.ab-window { display: grid; grid-template-columns: .65fr 1fr; gap: 55px; align-items: center; padding: 36px 42px; background: var(--ab-ink); color: #C6D3D9; }
.ab-window h3 { margin: 8px 0 12px; color: #F4F8F9; font-size: 1.65rem; }
.ab-window p { margin: 0; color: #9FB1B9; font-size: .9rem; }
.ab-window__bar { position: relative; display: grid; grid-template-columns: .25fr .5fr .25fr; height: 22px; overflow: hidden; border-radius: 2px; }
.ab-window__bar span { background: #637E89; }
.ab-window__bar i { background: linear-gradient(90deg, #63B1CC, #9BCB9B); }
.ab-window__bar b { background: linear-gradient(90deg, #F2A354, #D75449); }
.ab-window__labels { display: grid; grid-template-columns: .25fr .5fr .25fr; margin-top: 12px; color: #D4E0E4; font-family: "Raleway", Arial, sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .09em; }
.ab-window__labels span:nth-child(2) { text-align: center; }
.ab-window__labels span:last-child { text-align: right; }
.ab-window__labels small { color: #8096A0; font-family: "Lato", Arial, sans-serif; font-weight: 400; letter-spacing: 0; }

.ab-fault-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.ab-fault-card { padding: 32px; border: 1px solid #D1DCE1; background: #F7F9FA; box-shadow: 0 16px 45px rgba(22,41,51,.05); }
.ab-fault-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.ab-fault-card__top span { color: #71848D; font-family: "Raleway", Arial, sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .14em; }
.ab-fault-card__top i { position: relative; width: 38px; height: 38px; border: 1px solid #B8C9D0; border-radius: 50%; }
.ab-fault-card__top i::before, .ab-fault-card__top i::after { position: absolute; background: var(--ab-orange); content: ""; }
.ab-fault-card__top i::before { left: 10px; right: 10px; top: 18px; height: 2px; }
.ab-fault-card__top i::after { top: 10px; bottom: 10px; left: 18px; width: 2px; }
.ab-fault-card--quality .ab-fault-card__top i::after, .ab-fault-card--injector .ab-fault-card__top i::after { transform: rotate(45deg); }
.ab-fault-card--sensor .ab-fault-card__top i { border-color: var(--ab-blue); box-shadow: inset 0 0 0 8px #E1F1F6; }
.ab-fault-card h3 { margin-bottom: 13px; font-size: 1.42rem; }
.ab-fault-card__photo { margin: 20px 0 24px; overflow: hidden; border: 1px solid #C8D5DA; background: #E5EBEE; }
.ab-fault-card__photo img { display: block; width: 100%; height: auto; }
.ab-fault-card__photo figcaption { padding: 11px 14px 13px; border-top: 1px solid #C8D5DA; color: #60717A; font-size: .72rem; line-height: 1.48; }
.ab-fault-card > p { min-height: 116px; color: #5B6C75; font-size: .92rem; }
.ab-fault-card dl { margin: 22px 0 0; border-top: 1px solid #D3DEE2; }
.ab-fault-card dl div { display: grid; grid-template-columns: 110px 1fr; gap: 17px; padding: 15px 0; border-bottom: 1px solid #DCE4E7; }
.ab-fault-card dt { color: var(--ab-orange-dark); font-family: "Raleway", Arial, sans-serif; font-size: .7rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.ab-fault-card dd { margin: 0; color: #63747D; font-size: .84rem; line-height: 1.55; }

.ab-diagnosis { position: relative; background: var(--ab-night); color: #B7C7CD; }
.ab-diagnosis::before { position: absolute; inset: 0; background: linear-gradient(120deg, transparent 60%, rgba(99,177,204,.055)); content: ""; }
.ab-diagnosis .ab-shell { position: relative; }
.ab-section-heading--dark h2 { color: #F1F6F8; }
.ab-section-heading--dark > p { color: #96AAB3; }
.ab-diagnostic-flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin: 0; padding: 0; background: #29404B; list-style: none; }
.ab-diagnostic-flow li { min-height: 320px; padding: 27px 24px; background: #10232C; }
.ab-diagnostic-flow li > span { display: block; margin-bottom: 78px; color: var(--ab-orange); font-family: "Raleway", Arial, sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .12em; }
.ab-diagnostic-flow h3 { margin-bottom: 12px; color: #EDF3F5; font-size: 1.03rem; line-height: 1.35; }
.ab-diagnostic-flow p { margin: 0; color: #91A6AF; font-size: .84rem; line-height: 1.6; }
.ab-diagnosis__truth { display: flex; gap: 16px 30px; align-items: center; justify-content: center; padding: 25px; border-top: 3px solid var(--ab-orange); background: #F0F4F5; color: #667780; text-align: center; }
.ab-diagnosis__truth strong { color: var(--ab-ink); font-family: "Raleway", Arial, sans-serif; }

.ab-prevention__layout { display: grid; grid-template-columns: .66fr 1.34fr; gap: 90px; align-items: start; }
.ab-prevention__layout > div { position: sticky; top: 35px; }
.ab-prevention__layout > div p:last-child { color: #6A7A82; }
.ab-prevention__list { margin: 0; padding: 0; border-top: 1px solid var(--ab-line); list-style: none; }
.ab-prevention__list li { display: grid; grid-template-columns: 56px 1fr; gap: 18px; padding: 25px 0; border-bottom: 1px solid var(--ab-line); }
.ab-prevention__list li > span { color: var(--ab-orange-dark); font-family: "Raleway", Arial, sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .11em; }
.ab-prevention__list strong { display: block; margin-bottom: 4px; color: var(--ab-ink); font-family: "Raleway", Arial, sans-serif; font-size: 1.02rem; }
.ab-prevention__list p { margin: 0; color: #61727A; font-size: .91rem; }

.ab-modification { position: relative; background: #DCE5E9; }
.ab-modification__intro { display: grid; grid-template-columns: .88fr 1.12fr; gap: 75px; align-items: end; margin-bottom: 50px; }
.ab-modification__intro h2 { margin-bottom: 0; }
.ab-modification__intro > p:last-child { margin-bottom: 7px; color: #596B75; }
.ab-control-routes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-bottom: 18px; }
.ab-control-routes article { padding: 34px; border: 1px solid #BBCBD2; background: rgba(255,255,255,.72); }
.ab-control-routes__header { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 34px; padding-bottom: 15px; border-bottom: 1px solid #CBD7DC; }
.ab-control-routes__header span { color: var(--ab-orange-dark); font-family: "Raleway", Arial, sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .14em; }
.ab-control-routes__header strong { color: #71838C; font-family: "Raleway", Arial, sans-serif; font-size: .72rem; letter-spacing: .05em; }
.ab-control-routes h3 { margin-bottom: 15px; font-size: 1.48rem; }
.ab-control-routes p { color: #566A73; font-size: .91rem; }
.ab-control-routes__note { margin: 24px 0 0; padding: 16px 18px; border-left: 3px solid var(--ab-blue); background: #E8EFF2; color: #465B65 !important; font-size: .82rem !important; }
.ab-control-routes__summary { display: grid; grid-template-columns: 310px 1fr; gap: 35px; align-items: center; margin-bottom: 42px; padding: 22px 27px; background: var(--ab-ink); }
.ab-control-routes__summary p { margin: 0; color: #B5C5CC; font-size: .86rem; }
.ab-modification__comparison { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.ab-modification-card { display: flex; min-height: 600px; flex-direction: column; padding: 38px; border-top: 5px solid; background: #F7F9FA; }
.ab-modification-card--bad { border-color: var(--ab-danger); }
.ab-modification-card--good { border-color: var(--ab-blue); }
.ab-modification-card__status { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; color: #70838C; font-family: "Raleway", Arial, sans-serif; font-size: .68rem; font-weight: 700; letter-spacing: .13em; }
.ab-modification-card--bad .ab-modification-card__status i { width: 9px; height: 9px; border-radius: 50%; background: var(--ab-danger); box-shadow: 0 0 0 7px rgba(215,84,73,.13); }
.ab-modification-card--good .ab-modification-card__status b { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 50%; background: var(--ab-blue); color: #0D2029; }
.ab-modification-card h3 { margin-bottom: 16px; font-size: 1.75rem; }
.ab-modification-card > p { color: #5C6E77; }
.ab-modification-card ul { margin: 19px 0 28px; padding: 0; list-style: none; }
.ab-modification-card li { position: relative; padding: 13px 0 13px 29px; border-top: 1px solid #D6E0E4; color: #52656E; font-size: .9rem; }
.ab-modification-card li::before { position: absolute; left: 2px; top: 19px; width: 8px; height: 8px; border: 2px solid var(--ab-orange); border-radius: 50%; content: ""; }
.ab-modification-card__bottom { margin-top: auto; padding: 20px; border-left: 3px solid var(--ab-orange); background: #E9EEF0; color: var(--ab-ink) !important; font-family: "Raleway", Arial, sans-serif; font-size: .88rem; font-weight: 600; }
.ab-modification__boundary { display: flex; gap: 28px 45px; align-items: center; margin-top: 18px; padding: 23px 28px; border: 1px solid #BBCBD2; background: rgba(255,255,255,.5); }
.ab-modification__boundary .ab-data-label { flex: 0 0 250px; }
.ab-modification__boundary p { margin: 0; color: #5F7078; font-size: .86rem; }

.ab-sources { padding: 76px 0; background: #F6F8F9; }
.ab-sources__layout { display: grid; grid-template-columns: .5fr 1.5fr; gap: 90px; align-items: start; }
.ab-sources h2 { margin-bottom: 0; font-size: 2.3rem; }
.ab-sources__links { border-top: 1px solid var(--ab-line); }
.ab-sources__links a { display: grid; grid-template-columns: 100px 1fr 20px; gap: 20px; align-items: center; padding: 18px 4px; border-bottom: 1px solid var(--ab-line); color: var(--ab-ink); }
.ab-sources__links a > span { color: var(--ab-orange-dark); font-family: "Raleway", Arial, sans-serif; font-size: .66rem; font-weight: 700; letter-spacing: .12em; }
.ab-sources__links strong { font-size: .91rem; }
.ab-sources__links i { color: #778B94; font-style: normal; }
.ab-sources__links a:hover strong, .ab-sources__links a:hover i { color: var(--ab-orange-dark); }

.ab-cta { padding: 80px 0; background: #17323E; color: #BFD0D6; }
.ab-cta__layout { display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; }
.ab-cta h2 { margin: 10px 0 14px; color: #F2F7F9; font-size: clamp(2.2rem, 4vw, 4rem); line-height: 1.06; }
.ab-cta p:last-child { max-width: 800px; margin-bottom: 0; }
.ab-cta__actions { display: flex; min-width: 300px; flex-direction: column; gap: 12px; align-items: stretch; }
.ab-cta__phone { color: #EAF2F5; font-family: "Raleway", Arial, sans-serif; font-size: 1.45rem; font-weight: 600; text-align: center; }
.ab-cta__phone:hover { color: var(--ab-orange); }
.ab-legal { padding: 22px 0; border-top: 1px solid #243640; background: #0A141A; }
.ab-legal p { max-width: 1180px; margin: 0; color: #73858E; font-size: .68rem; line-height: 1.55; }
.ab-legal strong { color: #90A1A9; }

@media (max-width: 1180px) {
    .ab-hero__layout { grid-template-columns: 1fr; }
    .ab-hero__copy { max-width: 900px; }
    .ab-system { max-width: 920px; }
    .ab-diagnostic-flow { grid-template-columns: repeat(3, 1fr); }
    .ab-section-heading--wide { gap: 50px; }
}

@media (max-width: 900px) {
    .ab-shell { width: min(100% - 38px, 1320px); }
    .ab-section { padding: 78px 0; }
    .ab-intro-grid, .ab-prevention__layout, .ab-sources__layout, .ab-modification__intro { grid-template-columns: 1fr; gap: 42px; }
    .ab-prevention__layout > div { position: static; }
    .ab-reaction { grid-template-columns: 1fr; }
    .ab-reaction li { min-height: auto; }
    .ab-fault-grid, .ab-control-routes, .ab-modification__comparison { grid-template-columns: 1fr; }
    .ab-control-routes__summary { grid-template-columns: 1fr; gap: 12px; }
    .ab-fault-card > p { min-height: 0; }
    .ab-modification-card { min-height: auto; }
    .ab-window { grid-template-columns: 1fr; }
    .ab-section-heading--wide { grid-template-columns: 1fr; gap: 20px; }
    .ab-cta__layout { grid-template-columns: 1fr; gap: 35px; }
    .ab-cta__actions { max-width: 360px; min-width: 0; }
    .ab-correction__layout { grid-template-columns: 1fr; gap: 9px; }
}

@media (max-width: 680px) {
    .ab-page { font-size: 16px; }
    .ab-shell { width: calc(100% - 28px); }
    .ab-breadcrumbs { padding-top: 18px; }
    .ab-hero__layout { gap: 38px; padding: 26px 0 64px; }
    .ab-hero h1 { font-size: clamp(2.65rem, 13vw, 4.2rem); }
    .ab-actions { align-items: stretch; flex-direction: column; }
    .ab-button { width: 100%; }
    .ab-system__header { align-items: flex-start; flex-direction: column; }
    .ab-system__illustration { overflow-x: auto; }
    .ab-system__illustration img { width: 720px; max-width: none; }
    .ab-system__illustration figcaption { position: sticky; left: 0; width: calc(100vw - 28px); }
    .ab-fact-grid { grid-template-columns: 1fr; }
    .ab-fact-grid article { min-height: 0; }
    .ab-window { padding: 29px 22px; }
    .ab-window__labels { font-size: .55rem; }
    .ab-fault-card { padding: 25px 21px; }
    .ab-fault-card dl div { grid-template-columns: 1fr; gap: 5px; }
    .ab-diagnostic-flow { grid-template-columns: 1fr; }
    .ab-diagnostic-flow li { min-height: 0; }
    .ab-diagnostic-flow li > span { margin-bottom: 34px; }
    .ab-diagnosis__truth { align-items: flex-start; flex-direction: column; text-align: left; }
    .ab-prevention__list li { grid-template-columns: 43px 1fr; }
    .ab-modification-card { padding: 29px 22px; }
    .ab-modification__boundary { align-items: flex-start; flex-direction: column; }
    .ab-modification__boundary .ab-data-label { flex-basis: auto; }
    .ab-sources__links a { grid-template-columns: 70px 1fr 18px; gap: 12px; }
    .ab-legal p { font-size: .64rem; }
}

@media (prefers-reduced-motion: reduce) {
    .ab-page *, .ab-page *::before, .ab-page *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}