:root {
  color-scheme: dark;
  --color-bg: #090909;
  --color-surface: #151313;
  --color-text: #f4f2f2;
  --color-divider: rgba(244, 242, 242, 0.13);
  --color-divider-strong: rgba(244, 242, 242, 0.4);
  --color-accent: #ff0008;
  --color-accent-100: #2a0709;
  --color-accent-600: #e00007;
  --color-accent-700: #b80006;
  --color-neutral-500: #8a8686;
  --color-neutral-700: #b6b2b2;
  --color-neutral-800: #d6d2d2;
  --motion: cubic-bezier(0.22, 0.9, 0.24, 1);
  --header-height: 76px;
  font-family: "Archivo", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0 !important; }
html { scroll-behavior: smooth; background: var(--color-bg); }
body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--color-bg); color: var(--color-text); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
body.menu-open, body.quiz-locked { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
img { filter: grayscale(1); }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
p { color: var(--color-neutral-800); }
h1, h2, h3, p, figure, blockquote { margin-top: 0; }
h1, h2, h3, strong, .brand { font-family: "Archivo", sans-serif; }
h1 { margin-bottom: 22px; font-size: clamp(56px, 5.28vw, 76px); font-weight: 800; letter-spacing: -0.03em; line-height: 0.94; }
h2 { margin-bottom: 18px; font-size: clamp(34px, 3.15vw, 42px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.02; }
h3 { margin-bottom: 10px; font-size: 22px; font-weight: 800; line-height: 1.1; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.shell { width: min(1200px, calc(100% - 120px)); margin-inline: auto; }
.section { padding-block: 76px; }
.surface { background: var(--color-surface); }
.ruled { border-bottom: 2px solid var(--color-divider); }
.kicker { margin-bottom: 14px; color: var(--color-accent); font-size: 12px; font-weight: 700; letter-spacing: 0.16em; line-height: 1.2; text-transform: uppercase; }
.lead { font-size: 17px; line-height: 1.6; }
.accent { color: var(--color-accent); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 2000; top: 8px; left: 8px; padding: 12px 16px; transform: translateY(-140%); border: 2px solid var(--color-accent); background: var(--color-bg); }
.skip-link:focus { transform: translateY(0); }

.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: space-between; gap: 18px; padding: 13px 18px; border: 2px solid var(--color-divider); background: transparent; color: var(--color-text); font-weight: 700; line-height: 1.2; transition: transform .25s var(--motion), background-color .25s var(--motion), border-color .25s var(--motion); }
.btn > :last-child { transition: transform .25s var(--motion); }
.btn:hover > :last-child { transform: translateX(5px); }
.btn:active { transform: translateY(1px); }
.btn-primary, .btn-red { border-color: var(--color-accent); background: var(--color-accent); color: #fff; }
.btn-primary:hover, .btn-red:hover { border-color: var(--color-accent-600); background: var(--color-accent-600); }
.btn-primary:active, .btn-red:active { border-color: var(--color-accent-700); background: var(--color-accent-700); }
.btn-secondary { border-color: var(--color-divider-strong); }
.btn-secondary:hover { border-color: var(--color-accent); background: rgba(255, 0, 8, .08); }
.btn-ghost:hover { border-color: var(--color-accent); }
.btn-white { border-color: #fff; background: #fff; color: var(--color-accent-700); }
.btn-white-outline { border-color: rgba(255,255,255,.55); color: #fff; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.site-header { position: sticky; z-index: 900; top: 0; height: var(--header-height); border-bottom: 2px solid var(--color-divider); background: rgba(9,9,9,.94); backdrop-filter: blur(8px); }
.header-inner { height: 100%; display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 10px; white-space: nowrap; font-size: 15px; font-weight: 800; letter-spacing: .16em; }
.brand img { width: 32px; height: 32px; object-fit: contain; filter: none; }
.desktop-nav { display: flex; gap: 28px; margin-left: auto; font-size: 14px; font-weight: 600; }
.desktop-nav a { min-height: 44px; display: inline-flex; align-items: center; }
.desktop-nav a:hover { color: var(--color-accent); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.header-actions .btn { min-height: 44px; padding: 10px 14px; font-size: 13px; }
.menu-toggle { width: 48px; height: 48px; display: none; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 2px solid var(--color-divider); background: transparent; color: var(--color-text); }
.menu-toggle span { width: 22px; height: 2px; background: currentColor; }
.menu-scrim { position: fixed; z-index: 1090; inset: 0; pointer-events: none; opacity: 0; background: rgba(9,9,9,.6); transition: opacity .4s var(--motion); }
.mobile-menu { position: fixed; z-index: 1100; inset: 0; width: 100%; display: flex; flex-direction: column; transform: translateX(100%); background: var(--color-bg); transition: transform .46s var(--motion); }
.menu-open .menu-scrim { pointer-events: auto; opacity: 1; }
.menu-open .mobile-menu { transform: translateX(0); }
.menu-head { min-height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; border-bottom: 2px solid var(--color-divider); }
.menu-close, .quiz-close { width: 48px; height: 48px; border: 0; background: transparent; color: var(--color-text); font-size: 24px; }
.drawer-nav a { min-height: 112px; display: grid; grid-template-columns: 42px 1fr auto; align-items: center; gap: 14px; padding: 18px 20px; border-bottom: 2px solid var(--color-divider); opacity: 0; transform: translateX(28px); transition: opacity .46s var(--motion), transform .46s var(--motion); }
.menu-open .drawer-nav a { opacity: 1; transform: translateX(0); }
.menu-open .drawer-nav a:nth-child(1) { transition-delay: .10s; }
.menu-open .drawer-nav a:nth-child(2) { transition-delay: .16s; }
.menu-open .drawer-nav a:nth-child(3) { transition-delay: .22s; }
.menu-open .drawer-nav a:nth-child(4) { transition-delay: .28s; }
.menu-number { color: var(--color-accent); font-weight: 700; }
.drawer-nav strong { display: block; font-size: 30px; line-height: 1; transition: transform .25s var(--motion), color .25s var(--motion); }
.drawer-nav small { display: block; margin-top: 7px; color: var(--color-neutral-700); }
.drawer-nav a:hover strong { color: var(--color-accent); transform: translateX(6px); }
.menu-footer { margin-top: auto; padding: 20px; opacity: 0; transform: translateX(28px); transition: opacity .46s .34s var(--motion), transform .46s .34s var(--motion); }
.menu-open .menu-footer { opacity: 1; transform: translateX(0); }
.menu-footer > .btn { width: 100%; }
.menu-footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.menu-footer p { margin: 14px 0 0; font-size: 12px; }

.hero { padding-block: 76px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: start; gap: 56px; }
.hero-copy .lead { max-width: 520px; }
.hero-media { height: 480px; margin: 0; border: 2px solid var(--color-divider); overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-proof { display: flex; align-items: center; gap: 12px; margin-top: 32px; padding-top: 20px; border-top: 2px solid var(--color-divider); color: var(--color-neutral-800); font-size: 13px; }
.hero-proof span { color: var(--color-accent); letter-spacing: .08em; }

.image-band { position: relative; height: 340px; overflow: hidden; }
.image-band > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.image-band-overlay { position: absolute; inset: 0; background: linear-gradient(90deg,rgba(9,9,9,.92) 0%,rgba(9,9,9,.55) 60%,rgba(9,9,9,.2) 100%); }
.image-band-copy { position: relative; height: 100%; display: flex; flex-direction: column; justify-content: center; }
.image-band-copy h2 { max-width: 650px; }
.image-band-copy p:last-child { margin-bottom: 0; }

.split-copy { display: grid; grid-template-columns: 1fr 1fr; align-items: start; gap: 56px; }
.split-copy > :last-child { padding-top: 10px; }
.split-copy p + p { margin-top: 16px; }
.stat-strip { padding-bottom: 76px; scroll-margin-top: 88px; }
.stat-grid { display: grid; grid-template-columns: repeat(4,1fr); border-top: 2px solid var(--color-divider); border-bottom: 2px solid var(--color-divider); }
.stat-grid > div { min-height: 178px; display: grid; grid-template-rows: 30px auto minmax(38px,auto); align-content: center; justify-items: start; padding: 24px; border-right: 2px solid var(--color-divider); }
.stat-grid > div:first-child { padding-left: 24px; }
.stat-grid > div:last-child { padding-right: 24px; border-right: 0; }
.stat-grid > div::before { content: attr(data-stat-icon); display: flex; width: 28px; height: 28px; align-items: center; justify-content: center; margin-bottom: 12px; color: var(--color-accent); font-size: 18px; line-height: 1; }
.stat-grid strong { font-size: 52px; font-weight: 800; letter-spacing: -.03em; line-height: 1; }
.stat-grid span { align-self: start; margin-top: 8px; color: var(--color-neutral-800); font-size: 13px; line-height: 1.45; }

.calculator-grid { display: grid; grid-template-columns: 1.15fr .85fr; align-items: start; gap: 48px; }
.calculator-form > p:not(.kicker) { margin-bottom: 38px; }
.range-field { display: flex; flex-direction: column; gap: 8px; margin-top: 28px; }
.range-field > div { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.range-field label { font-size: 13px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.range-field output { font-size: 26px; font-weight: 800; }
.range-field small { color: var(--color-neutral-700); font-size: 12px; }
input[type="range"] { width: 100%; height: 44px; margin: 0; accent-color: var(--color-accent); cursor: pointer; }
.assumption { margin-top: 28px !important; padding-top: 14px; border-top: 2px solid var(--color-divider); color: var(--color-neutral-700) !important; font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
.calculator-results { display: flex; flex-direction: column; gap: 16px; }
.result-card { padding: 28px; border: 2px solid var(--color-divider); background: var(--color-bg); }
.result-card > strong { display: block; margin: 10px 0 12px; font-size: 68px; font-weight: 800; letter-spacing: -.04em; line-height: 1; }
.result-card .btn, .quiz-promo .btn { width: 100%; }
.quiz-promo { padding: 24px; border: 2px solid var(--color-accent); }
.quiz-promo h3 { font-size: 24px; }

.benefit-grid, .select-grid { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 44px; border-top: 2px solid var(--color-divider); }
.benefit-grid article { min-height: 250px; padding: 28px 24px 0; border-right: 2px solid var(--color-divider); }
.benefit-grid article:first-child { padding-left: 0; }
.benefit-grid article:last-child { padding-right: 0; border-right: 0; }
.benefit-grid article > span, .select-card > span { color: var(--color-accent); font-size: 12px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.benefit-grid h3 { margin-top: 12px; }
.benefit-grid p { font-size: 14px; }
.lift-card { transition: transform .32s var(--motion), border-color .32s var(--motion); }
.lift-card:hover { transform: translateY(-4px); border-color: rgba(255,0,8,.65); }

.process-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; margin-top: 44px; }
.process-card { border: 2px solid transparent; }
.process-card img { width: 100%; height: 200px; object-fit: cover; border: 2px solid var(--color-divider); }
.process-card .kicker { margin: 14px 0 8px; }
.process-card p:last-child { font-size: 14px; }
.case-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; }
.case-stats { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 28px; border-top: 2px solid var(--color-divider); border-bottom: 2px solid var(--color-divider); }
.case-stats > div { padding: 18px 14px; border-right: 2px solid var(--color-divider); }
.case-stats > div:first-child { padding-left: 0; }
.case-stats > div:last-child { border-right: 0; }
.case-stats strong { display: block; font-size: 36px; line-height: 1; }
.case-stats span { display: block; margin-top: 7px; color: var(--color-neutral-700); font-size: 12px; }
.comparison-stage { position: relative; height: 390px; overflow: hidden; border: 2px solid var(--color-divider); }
.comparison-stage > img, .comparison-before, .comparison-before img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.comparison-after { filter: grayscale(1) contrast(1.12); }
.comparison-before { width: 50%; overflow: hidden; border-right: 2px solid var(--color-accent); }
.comparison-before img { width: calc(100vw * .42); max-width: 600px; filter: grayscale(1) contrast(1.18); }
.before-badge, .after-badge { position: absolute; top: 14px; z-index: 2; padding: 5px 8px; font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.before-badge { left: 14px; background: var(--color-accent); }
.after-badge { right: 14px; background: rgba(9,9,9,.85); }
.comparison label { display: block; margin-top: 14px; font-size: 13px; font-weight: 700; }
.comparison p { font-size: 12px; color: var(--color-neutral-700); }

.reviews-head, .blog-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; }
.rating-block { min-width: 210px; padding: 18px 20px; border: 2px solid var(--color-divider); }
.rating-block strong { display: block; font-size: 38px; }
.rating-block span { color: var(--color-neutral-700); font-size: 13px; }
.review-grid, .blog-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 40px; }
.review-card { min-height: 275px; padding: 24px; border: 2px solid var(--color-divider); }
.review-card > span { color: var(--color-accent); letter-spacing: .08em; }
.review-card blockquote { margin: 20px 0; color: var(--color-text); font-size: 17px; line-height: 1.55; }
.review-card p { margin-top: auto; font-size: 13px; }
.select-grid { border-left: 2px solid var(--color-divider); }
.select-card { min-height: 270px; display: flex; flex-direction: column; padding: 24px; border-right: 2px solid var(--color-divider); border-bottom: 2px solid var(--color-divider); }
.select-card.featured { border: 2px solid var(--color-accent); margin: -2px 0 0 -2px; }
.select-card h3 { margin-top: 14px; }
.select-card p { font-size: 14px; }
.select-card b { margin-top: auto; align-self: flex-end; font-size: 22px; }
.manual-service-banner { display:flex; align-items:center; justify-content:space-between; gap:32px; margin-top:18px; padding:24px 28px; border:2px solid var(--color-accent); background:rgba(255,0,8,.06); }
.manual-service-banner span { display:grid; gap:6px; }
.manual-service-banner small { color:var(--color-accent); font-size:11px; font-style:normal; font-weight:700; letter-spacing:.14em; text-transform:uppercase; }
.manual-service-banner strong { color:var(--color-text); font-size:clamp(20px,2.5vw,30px); line-height:1.05; }
.manual-service-banner em { color:var(--color-neutral-700); font-size:13px; font-style:normal; }
.manual-service-banner > b { flex:0 0 auto; color:var(--color-text); font-size:13px; }

.amsoil-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.amsoil-benefits { display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid var(--color-divider); border-left: 2px solid var(--color-divider); }
.amsoil-benefits article { min-height: 190px; padding: 22px; border-right: 2px solid var(--color-divider); border-bottom: 2px solid var(--color-divider); }
.amsoil-benefits h3 { font-size: 19px; }
.amsoil-benefits p { margin-bottom: 0; font-size: 13px; }
.faq-grid { display: grid; grid-template-columns: .8fr 1.2fr; align-items: start; gap: 56px; }
.faq-list { border-top: 2px solid var(--color-divider); }
.faq-item { border-bottom: 2px solid var(--color-divider); }
.faq-question { position: relative; min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 36px 18px 0; color: var(--color-text); cursor: pointer; font-size: 18px; font-weight: 700; list-style: none; }
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: "+"; position: absolute; right: 0; color: var(--color-accent); font-size: 24px; }
.faq-item[open] .faq-question::after { content: "−"; }
.faq-answer { max-width: 640px; padding: 0 36px 20px 0; color: var(--color-neutral-800); font-size: 15px; line-height: 1.6; }

.booking-poster { padding-block: 72px; background: var(--color-accent); color: #fff; }
.booking-poster .kicker, .booking-poster p { color: #fff; }
.booking-poster .kicker { opacity: .85; }
.booking-poster h2 { font-size: 52px; line-height: .98; }
.booking-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; }
.booking-details { display: grid; grid-template-columns: 1fr 1fr; border-top: 2px solid rgba(255,255,255,.35); border-left: 2px solid rgba(255,255,255,.35); }
.booking-details > * { min-height: 140px; display: flex; flex-direction: column; padding: 22px; border-right: 2px solid rgba(255,255,255,.35); border-bottom: 2px solid rgba(255,255,255,.35); }
.booking-details > :last-child { grid-column: 1 / -1; min-height: 110px; }
.booking-details span { font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.booking-details strong { margin-top: 10px; font-size: 20px; line-height: 1.35; }
.booking-details small { margin-top: 8px; }
.blog-card { padding-bottom: 18px; border: 2px solid transparent; }
.blog-card img { width: 100%; height: 180px; object-fit: cover; border: 2px solid var(--color-divider); }
.blog-card .kicker { display: block; margin: 14px 0 8px; }
.blog-card h3 { font-size: 18px; line-height: 1.25; }
.blog-card b { font-size: 13px; }

.site-footer { padding-block: 40px; border-bottom: 2px solid var(--color-divider); }
.footer-grid { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; }
.footer-grid > :last-child { color: var(--color-neutral-800); text-align: right; }
.footer-grid p, .footer-grid small { font-size: 13px; }
.desktop-sticky { position: fixed; z-index: 850; right: 0; bottom: 0; left: 0; transform: translateY(100%); border-top: 2px solid var(--color-divider); background: rgba(9,9,9,.96); transition: transform .46s var(--motion); }
.desktop-sticky.is-visible { transform: translateY(0); }
.desktop-sticky > div { min-height: 68px; display: flex; align-items: center; gap: 20px; }
.desktop-sticky > div > span { margin-right: auto; color: var(--color-neutral-800); font-size: 13px; font-weight: 600; }
.desktop-sticky > div > div { display: flex; gap: 10px; }
.desktop-sticky .btn { min-height: 44px; padding: 10px 14px; font-size: 13px; }
.mobile-bottom-cta { display: none; }
.noscript-cta { position: fixed; z-index: 2000; right: 20px; bottom: 20px; left: 20px; padding: 18px; border: 2px solid var(--color-accent); background: var(--color-bg); }

.quiz-modal { position: fixed; z-index: 1500; inset: 0; display: flex; align-items: center; justify-content: center; padding: 20px; pointer-events: none; opacity: 0; background: rgba(9,9,9,.72); transition: opacity .4s var(--motion); }
.quiz-modal.is-open { pointer-events: auto; opacity: 1; }
.quiz-dialog { width: min(720px,100%); max-height: 84vh; overflow-y: auto; transform: translateY(28px); border: 2px solid var(--color-accent); background: var(--color-bg); transition: transform .46s var(--motion); }
.quiz-modal.is-open .quiz-dialog { transform: translateY(0); }
.quiz-dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 28px 32px 20px; border-bottom: 2px solid var(--color-divider); }
.quiz-dialog-head h2 { margin-bottom: 0; font-size: 30px; }
.symptom-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 0; padding: 24px 32px; border: 0; }
.symptom-option { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; border: 2px solid var(--color-divider); font-size: 15px; font-weight: 600; cursor: pointer; }
.symptom-wide { grid-column: 1 / -1; }
.symptom-option input { position: absolute; opacity: 0; pointer-events: none; }
.symptom-option i { width: 16px; height: 16px; flex: 0 0 auto; border: 2px solid var(--color-accent); }
.symptom-option input:checked + span + i { background: var(--color-accent); }
.symptom-option:has(input:checked) { border-color: var(--color-accent); }
.symptom-result { margin: 0 32px 28px; padding: 24px; border: 2px solid var(--color-divider); background: var(--color-surface); }
.symptom-result-top { display: flex; justify-content: space-between; gap: 20px; color: var(--color-neutral-700); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.symptom-meter { height: 10px; margin-top: 14px; background: var(--color-accent-100); }
.symptom-meter span { display: block; width: 20%; height: 100%; background: var(--color-accent); transform-origin: left; transition: width .45s var(--motion); }
.symptom-result h3 { margin-top: 16px; font-size: 26px; }
.symptom-result p { margin-bottom: 0; font-size: 14px; }

.js .reveal-ready { opacity: 0; transform: translateY(20px); }
.js .reveal-ready.is-revealed { opacity: 1; transform: translateY(0); transition: opacity .62s var(--motion), transform .62s var(--motion); }

@media (max-width: 1080px) {
  .shell { width: min(100% - 80px,1200px); }
  .desktop-nav { gap: 18px; }
  .header-whatsapp { display: none; }
  .hero-grid { gap: 36px; }
  .benefit-grid, .select-grid { grid-template-columns: repeat(2,1fr); }
  .benefit-grid article:nth-child(2) { border-right: 0; }
  .benefit-grid article:nth-child(n+3) { border-top: 2px solid var(--color-divider); }
  .select-card { border-top: 2px solid var(--color-divider); }
}

@media (max-width: 768px) {
  body { padding-bottom: calc(68px + env(safe-area-inset-bottom)); font-size: 15px; line-height: 1.55; }
  .shell { width: calc(100% - 40px); }
  .section { padding-block: 56px; }
  h1 { font-size: 38px; line-height: .98; letter-spacing: -.02em; }
  h2 { font-size: 30px; }
  h3 { font-size: 19px; }
  .lead { font-size: 15px; }
  .desktop-nav, .header-check, .header-whatsapp { display: none; }
  .header-actions { margin-left: auto; }
  .menu-toggle { display: flex; }
  .hero { padding-block: 48px; }
  .hero-grid, .split-copy, .calculator-grid, .case-grid, .amsoil-grid, .faq-grid, .booking-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-media { height: 320px; }
  .hero-proof { align-items: flex-start; }
  .image-band { height: 340px; }
  .stat-strip { padding-bottom: 56px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid > div { min-height: 154px; grid-template-rows: 28px auto minmax(42px,auto); padding: 20px; border-bottom: 2px solid var(--color-divider); }
  .stat-grid > div:first-child { padding-left: 20px; }
  .stat-grid > div:nth-child(2) { border-right: 0; }
  .stat-grid > div:nth-child(n+3) { border-bottom: 0; }
  .stat-grid strong { font-size: 34px; }
  .result-card > strong { font-size: 48px; }
  .benefit-grid, .process-grid, .review-grid, .select-grid, .blog-grid { grid-template-columns: 1fr; gap: 0; }
  .benefit-grid article { min-height: auto; padding: 24px 0; border-right: 0; border-bottom: 2px solid var(--color-divider); }
  .process-card, .review-card, .blog-card { margin-bottom: 20px; }
  .process-card img { height: 200px; }
  .comparison-stage { height: 300px; }
  .comparison-before img { width: calc(100vw - 40px); max-width: none; }
  .reviews-head, .blog-heading { align-items: flex-start; flex-direction: column; }
  .rating-block { width: 100%; }
  .select-grid { border-left: 0; }
  .select-card, .select-card.featured { min-height: 220px; margin: 0; border: 2px solid var(--color-divider); border-bottom: 0; }
  .select-card.featured { border-color: var(--color-accent); }
  .select-card:last-child { border-bottom: 2px solid var(--color-divider); }
  .manual-service-banner { align-items:flex-start; flex-direction:column; gap:18px; padding:22px; }
  .manual-service-banner > b { white-space:normal; }
  .amsoil-benefits { grid-template-columns: 1fr; }
  .amsoil-benefits article { min-height: auto; }
  .faq-grid { gap: 24px; }
  .booking-poster { padding-block: 56px; }
  .booking-poster h2 { font-size: 38px; }
  .booking-details { grid-template-columns: 1fr; }
  .booking-details > :last-child { grid-column: auto; }
  .footer-grid { align-items: flex-start; flex-direction: column; }
  .footer-grid > :last-child { text-align: left; }
  .desktop-sticky { display: none; }
  .mobile-bottom-cta { position: fixed; z-index: 850; right: 0; bottom: 0; left: 0; min-height: 68px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); border-top: 2px solid var(--color-divider); background: rgba(9,9,9,.96); }
  .mobile-bottom-cta .btn { width: 100%; min-width: 0; padding: 10px 12px; font-size: 13px; }
  .quiz-modal { align-items: flex-end; padding: 0; }
  .quiz-dialog { width: 100%; max-height: 88vh; transform: translateY(100%); border-right: 0; border-bottom: 0; border-left: 0; }
  .quiz-dialog-head { padding: 20px; }
  .quiz-dialog-head h2 { font-size: 26px; }
  .symptom-grid { grid-template-columns: 1fr; padding: 18px 20px; }
  .symptom-wide { grid-column: auto; }
  .symptom-option { min-height: 56px; }
  .symptom-result { margin: 0 20px 20px; padding: 20px; }
  .symptom-result-top { align-items: flex-start; flex-direction: column; gap: 4px; }
  .symptom-result .button-row { flex-direction: column; }
  .symptom-result .btn { width: 100%; }
}

@media (max-width: 420px) {
  .button-row { flex-direction: column; }
  .button-row .btn { width: 100%; }
  .hero-media { height: 280px; }
  .case-stats strong { font-size: 30px; }
  .case-stats span { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .js .reveal-ready, .js .reveal-ready.is-revealed, .drawer-nav a, .menu-footer { opacity: 1; transform: none; }
}