:root {
  --blue: #397cc6;
  --blue-deep: #0750a3;
  --blue-dark: #073f87;
  --ice: #b6d6f7;
  --body: #4b6788;
  --font: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Baloo 2", var(--font);
  --ease: cubic-bezier(.19,1,.22,1);
}
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; overflow-x: clip; color: var(--blue-dark); font-family: var(--font); -webkit-font-smoothing: antialiased; background: #fff; }
a { color: inherit; text-decoration: none; }
img,svg { display: block; }
img { max-width: 100%; }
button { font: inherit; cursor: pointer; }
h1,h2,h3,p { margin-top: 0; }
.container { width: min(calc(100% - 104px),1320px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
::selection { background: var(--blue); color: white; }
:focus-visible { outline: 3px solid #f8a84b; outline-offset: 5px; }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 15px; padding: 12px 16px; background: #fff; border: 2px solid var(--blue); transform: translateY(-180%); }
.skip-link:focus { transform: none; }

/* Một hệ logo, một hệ font. Header không che hoặc crop ảnh. */
.site-header { position: fixed; z-index: 60; inset: 0 0 auto; transition: background .25s,box-shadow .25s; }
.site-header.is-scrolled { background: rgba(255,255,255,.96); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 rgba(3,62,137,.09); }
.header-inner { height: 94px; display: flex; align-items: center; gap: 24px; }
.brand { width: 88px; flex: 0 0 auto; display: grid; place-items: center; }
.brand img { height: 72px; width: auto; object-fit: contain; animation: logo-in .7s var(--ease) both; }
@keyframes logo-in { from { opacity: 0; transform: translateY(-13px) scale(.92); } to { opacity: 1; transform: none; } }
.primary-nav { display: flex; gap: clamp(28px,3vw,49px); align-items: center; margin-left: auto; margin-right: 32px; }
.primary-nav a { color: #164f9d; font-size: 12px; font-weight: 600; }
.primary-nav a:hover { color: #4188d1; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 47px; padding: 13px 25px; border-radius: 999px; border: 0; font-size: 13px; font-weight: 700; white-space: nowrap; transition: transform .26s var(--ease),box-shadow .26s; }
.button:hover { transform: translateY(-3px); box-shadow: 0 9px 20px rgba(12,82,169,.15); }
.button-primary { background: linear-gradient(120deg,#3282dd,#0b58ba); color: white; min-width: 126px; }
.mobile-menu-toggle { display: none; }

/* HERO: máy và mascot đều là PNG nền trong, tuyệt đối không có background crop. */
.hero { position: relative; isolation: isolate; overflow: hidden; min-height: 800px; background: #fff; padding: 122px 0 155px; }
.hero-inner { display: grid; grid-template-columns: 50% 50%; align-items: center; min-height: 550px; position: relative; z-index: 2; }
.hero-copy { position: relative; z-index: 3; padding-left: 1%; opacity: var(--hero-presence,1); transform: translateY(var(--hero-shift,0px)); }
.hero h1 { font: 800 clamp(79px,8.3vw,137px)/.88 var(--display); letter-spacing: -.055em; color: var(--blue-deep); margin: 0 0 31px; }
.hero h1 span { color: #0a56ac; }
.hero-lede { margin: 0; color: #1458ab; font-size: clamp(20px,1.85vw,28px); line-height: 1.48; letter-spacing: -.04em; font-weight: 600; }
.hero-visual { position: relative; width: 100%; height: clamp(490px,44vw,610px); opacity: var(--hero-presence,1); transform: translateY(var(--hero-shift,0px)); }
.hero-washer { position: absolute; z-index: 2; top: 3%; right: 1%; width: min(90%,590px); height: 92%; object-fit: contain; filter: drop-shadow(0 17px 15px rgba(18,85,170,.07)); animation: image-arrive 1.05s var(--ease) both; }
.hero-mascot { position: absolute; z-index: 3; width: clamp(165px,19vw,257px); height: auto; left: -3%; bottom: 2%; filter: drop-shadow(0 14px 11px rgba(13,72,150,.10)); animation: mascot-arrive 1.1s .2s var(--ease) both; }
.hero-back-line { position: absolute; z-index: 1; top: 0; left: 0; height: 100%; width: 120%; overflow: visible; pointer-events: none; }
.hero-back-line path { fill: none; stroke: #a9d0f8; stroke-width: 21; stroke-linecap: round; }
.hero-wave { position: absolute; z-index: 1; left: 0; bottom: -1px; width: 100%; height: clamp(110px,10vw,160px); color: var(--blue); }
@keyframes image-arrive { from { opacity: 0; transform: translateY(30px) scale(.96); filter: blur(6px); } to { opacity: 1; transform: none; } }
@keyframes mascot-arrive { from { opacity: 0; transform: translateY(40px) rotate(12deg) scale(.8); } to { opacity: 1; transform: none; } }

/* Mảng xanh liền mạch, ribbon SVG nằm dưới nội dung. */
.story { position: relative; background: var(--blue); color: white; }
.story-sticky { position: relative; min-height: 620px; background: var(--blue); isolation: isolate; }
.story-container { min-height: 620px; display: flex; align-items: center; position: relative; z-index: 3; }
.story-copy { max-width: 960px; padding: 75px 0 175px; }
.story-copy h2 { font: 800 clamp(58px,6vw,94px)/1.07 var(--display); letter-spacing: -.04em; color: white; margin: 0 0 18px; }
.story-copy h2 span { color: white; }
.story-copy p { color: #eef7ff; font-size: clamp(14px,1.18vw,19px); line-height: 1.8; max-width: 760px; }
.story-mascot-visual { position: absolute; z-index: 4; right: 3%; bottom: 40px; width: clamp(170px,19vw,280px); }
.story-mascot-visual img { width: 100%; height: auto; filter: drop-shadow(-3px 0 0 white) drop-shadow(3px 0 0 white) drop-shadow(0 -3px 0 white) drop-shadow(0 3px 0 white); }
.story-ribbon { position: absolute; z-index: 1; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.story-bottom-wave { position: absolute; z-index: 2; bottom: -1px; left: 0; width: 100%; height: clamp(85px,8vw,135px); fill: white; pointer-events: none; }

/* Quy trình: một đường vẽ SVG độc lập, phía trên chỉ có 3 PNG trong suốt. */
.process { position: relative; background: white; padding: 55px 0 108px; min-height: 540px; overflow: hidden; }
.process-inner { position: relative; isolation: isolate; padding-top: 30px; }
.process-route { position: absolute; z-index: 0; left: -2%; top: 80px; width: 104%; height: 300px; overflow: visible; pointer-events: none; }
.process-route path { stroke-dasharray: 1800; stroke-dashoffset: 1800; }
.process-route-mobile { display: none; }
.process-steps { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 7vw; align-items: start; }
.process-step { opacity: 0; transform: translateY(48px) scale(.96); transition: opacity .48s,transform .72s var(--ease); }
.process-step.line-revealed { opacity: 1; transform: none; }
.process-step:nth-child(2) { margin-top: 73px; }
.process-step:nth-child(3) { margin-top: 138px; }
.step-art { width: min(100%,194px); height: 168px; display: grid; place-items: center; }
.step-art img { width: 100%; height: 100%; object-fit: contain; filter: drop-shadow(0 10px 12px rgba(23,78,156,.08)); }
.process-step .step-art { opacity: 0; transform: translateY(17px) scale(.76) rotate(-7deg); transition: opacity .42s,transform .75s var(--ease); }
.process-step.line-revealed .step-art { opacity: 1; transform: none; transition-delay: .05s; }
.process-step .step-number,.process-step h3,.process-step p { opacity: 0; transform: translateY(14px); transition: opacity .47s,transform .62s var(--ease); }
.process-step.line-revealed .step-number,.process-step.line-revealed h3,.process-step.line-revealed p { opacity: 1; transform: none; }
.process-step.line-revealed .step-number { transition-delay: .10s; }
.process-step.line-revealed h3 { transition-delay: .18s; }
.process-step.line-revealed p { transition-delay: .25s; }
.step-number { display: block; font: 800 47px/1.12 var(--display); color: #a8cff7; }
.process-step .step-number { margin-top: 38px; }
.process-step h3 { margin: 1px 0 7px; font-size: 23px; letter-spacing: -.04em; color: var(--blue-deep); }
.process-step p { margin: 0; max-width: 280px; color: var(--body); font-size: 13px; line-height: 1.8; }

/* Dịch vụ tối giản, không dùng card cầu kỳ. */
.services { background: #fff; padding: 95px 0 65px; }
.services .section-heading h2 { margin: 0 0 8px; font: 800 clamp(54px,5.5vw,78px)/1.12 var(--display); letter-spacing: -.04em; color: var(--blue-deep); }
.services .section-heading p { color: var(--blue); font-size: 15px; line-height: 1.8; }
.service-list { margin-top: 27px; }
.service-item { border-bottom: 1px solid #d9e7f7; }
.service-item:first-child { border-top: 1px solid #d9e7f7; }
.service-item summary { display: flex; align-items: center; gap: 23px; min-height: 114px; list-style: none; cursor: pointer; }
.service-item summary::-webkit-details-marker { display: none; }
.service-icon { flex: 0 0 65px; width: 65px; height: 65px; display: grid; place-items: center; border-radius: 50%; background: #eaf3fd; color: var(--blue-deep); }
.service-icon svg { width: 33px; height: 33px; }
.service-label { display: flex; flex: 1; min-width: 0; flex-direction: column; gap: 7px; }
.service-label strong { font-size: 19px; letter-spacing: -.035em; color: var(--blue-deep); }
.service-label small { font-size: 12px; line-height: 1.65; color: #6d87a7; }
.service-chevron { color: var(--blue); font-size: 27px; transition: transform .28s; }
.service-item[open] .service-chevron { transform: rotate(180deg); }
.service-details { padding: 0 60px 24px 87px; max-width: 890px; font-size: 12px; color: var(--body); line-height: 1.8; }
.price-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 0 30px; margin: 4px 0; }
.price-grid div { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid #e5edf8; }
.price-grid dd { color: var(--blue-deep); font-weight: 800; margin: 0; white-space: nowrap; }
.price-bottom-note { color: #6b86a6; font-size: 12px; line-height: 1.8; padding-top: 24px; }
.service-item:nth-child(2) { --reveal-delay: .07s; }

/* Bảng giá có thể đọc mà không cần bấm mở dịch vụ. */
.pricing { padding: 54px 0 215px; background: white; scroll-margin-top: 95px; }
.pricing-inner { display: grid; grid-template-columns: 32% 1fr; gap: 7%; align-items: start; }
.pricing-heading h2 { margin: 0 0 18px; font: 800 clamp(39px,4vw,62px)/1.14 var(--display); color: var(--blue-deep); letter-spacing: -.035em; }
.pricing-heading h2 span { color: var(--blue); }
.pricing-heading p { max-width: 320px; font-size: 12px; line-height: 1.85; color: var(--body); }
.pricing-columns { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 21px; }
.pricing-panel { padding: 28px 26px 23px; background: #f6faff; border: 1px solid #dceafa; border-radius: 22px; }
.pricing-panel h3 { font-size: 18px; margin-bottom: 16px; color: var(--blue-deep); letter-spacing: -.035em; }
.pricing-row { display: flex; justify-content: space-between; gap: 9px; align-items: baseline; padding: 13px 0; border-bottom: 1px solid #e0ebf8; color: var(--body); font-size: 12px; }
.pricing-row strong { color: var(--blue-deep); font-size: 12px; white-space: nowrap; }
.pricing-fineprint { margin: 19px 0 0; font-size: 11px; line-height: 1.75; color: #6682a3; }

.contact { position: relative; background: var(--blue); color: white; text-align: center; padding: 78px 0 0; }
.contact-wave { position: absolute; bottom: calc(100% - 1px); left: 0; width: 100%; height: clamp(95px,10vw,148px); color: var(--blue); }
.contact-inner { padding-bottom: 65px; }
.contact-logo { width: 105px; height: 105px; object-fit: contain; margin: 0 auto 24px; }
.contact h2 { font: 800 clamp(49px,5.3vw,78px)/1.08 var(--display); letter-spacing: -.03em; margin: 0 0 20px; color: #fff; }
.contact h2 span { color: white; }
.contact-inner > p { max-width: 520px; color: #eff7ff; margin: 0 auto 27px; font-size: 13px; line-height: 1.8; }
.button-white { color: var(--blue-deep); background: white; min-width: 230px; }
.contact-info { display: flex; text-align: left; justify-content: space-between; align-items: center; gap: 20px; max-width: 720px; margin: 99px auto 0; border-top: 1px solid #ffffff44; padding-top: 29px; }
.contact-info-label { color: #d4eaff; font-size: 10px; letter-spacing: .13em; font-weight: 700; text-transform: uppercase; }
.contact-info p { margin: 9px 0 0; color: white; font-size: 12px; font-weight: 600; }
.address-link { flex: 0 0 auto; font-size: 12px; font-weight: 700; border-bottom: 1px solid #ffffffa0; padding-bottom: 5px; }
.site-footer { border-top: 1px solid #ffffff3a; display: flex; justify-content: space-between; gap: 16px; padding-block: 24px 29px; color: #e0efff; font-size: 11px; }

/* Hiệu ứng in/out tự đảo chiều bằng IntersectionObserver. */
.js-animations .reveal { opacity: 0; transform: translate3d(0,32px,0); transition: opacity .7s ease,transform .85s var(--ease); transition-delay: var(--reveal-delay,0s); }
.js-animations .reveal.is-revealed { opacity: 1; transform: none; }
.js-animations .enter { animation: text-arrive .9s var(--ease) both; }
.js-animations .hero-copy .enter:nth-child(2) { animation-delay: .12s; }
@keyframes text-arrive { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

@media(max-width:1050px) {
  .container { width: min(calc(100% - 66px),1320px); }
  .hero h1 { font-size: clamp(68px,8.5vw,103px); }
  .hero-mascot { left: -5%; width: 34%; }
  .story-copy h2 { font-size: clamp(54px,6.4vw,75px); }
  .pricing-inner { gap: 4%; grid-template-columns: 28% 1fr; }
}
@media(max-width:720px) {
  html { scroll-padding-top: 78px; }
  .container { width: min(calc(100% - 40px),580px); }
  .header-inner { height: 75px; }
  .brand { width: 69px; }
  .brand img { height: 60px; }
  .header-cta { margin-left: auto; min-width: 101px; min-height: 39px; padding: 10px 16px; font-size: 11px; }
  .mobile-menu-toggle { display: flex; flex-direction: column; gap: 5px; border: 0; background: transparent; padding: 10px 5px 10px 12px; }
  .mobile-menu-toggle span { display: block; width: 21px; height: 2px; border-radius: 2px; background: var(--blue-deep); transition: transform .25s; }
  .mobile-menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .mobile-menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .primary-nav { display: none; position: absolute; top: 75px; left: 0; width: 100%; margin: 0; padding: 18px 25px 25px; background: #fff; box-shadow: 0 18px 20px #0b56a215; }
  .primary-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 13px 0; border-bottom: 1px solid #e9f2fc; }
  .hero { padding: 110px 0 90px; min-height: 760px; }
  .hero-inner { display: flex; flex-direction: column; align-items: stretch; min-height: 0; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(57px,13.5vw,86px); line-height: .93; margin-bottom: 15px; }
  .hero-lede { font-size: 17px; line-height: 1.45; }
  .hero-visual { height: clamp(350px,100vw,465px); margin-top: 0; }
  .hero-washer { width: 84%; height: 93%; right: 1%; top: 0; }
  .hero-mascot { width: 33%; left: 2%; bottom: 8%; }
  .hero-wave { height: 95px; }
  .story-sticky,.story-container { min-height: 550px; }
  .story-copy { padding: 83px 0 210px; }
  .story-copy h2 { font-size: clamp(42px,9vw,58px); line-height: 1.1; }
  .story-copy p { font-size: 12px; line-height: 1.85; max-width: 360px; }
  .story-mascot-visual { width: 154px; right: 5%; bottom: 32px; }
  .story-bottom-wave { height: 83px; }
  .process { min-height: 885px; padding: 45px 0 78px; }
  .process-inner { padding-top: 10px; }
  .process-route-desktop { display: none; }
  .process-route-mobile { display: block; left: 5%; top: 20px; width: 90%; height: 810px; }
  .process-steps { display: flex; flex-direction: column; gap: 18px; }
  .process-step { display: grid; grid-template-columns: 140px minmax(0,1fr); grid-template-rows: 37px auto auto; column-gap: 13px; min-height: 245px; width: 89%; align-items: start; }
  .process-step:nth-child(2) { margin: 0 0 0 auto; }
  .process-step:nth-child(3) { margin: 0; }
  .step-art { grid-column: 1; grid-row: 1 / 4; width: 140px; height: 140px; }
  .step-number { grid-column: 2; font-size: 36px; }
  .process-step .step-number { margin-top: 0; }
  .process-step h3 { grid-column: 2; font-size: 18px; }
  .process-step p { grid-column: 2; font-size: 11px; line-height: 1.7; }
  .services { padding: 52px 0 45px; }
  .services .section-heading h2 { font-size: clamp(39px,9vw,55px); }
  .services .section-heading p { font-size: 12px; }
  .service-list { margin-top: 22px; }
  .service-item summary { gap: 13px; min-height: 101px; }
  .service-icon { flex-basis: 47px; width: 47px; height: 47px; }
  .service-icon svg { width: 25px; height: 25px; }
  .service-label strong { font-size: 14px; }
  .service-label small { font-size: 11px; }
  .service-details { padding: 0 8px 23px 58px; font-size: 11px; }
  .price-grid { grid-template-columns: 1fr; }
  .price-bottom-note { font-size: 10px; }
  .pricing { padding: 28px 0 145px; }
  .pricing-inner { display: block; }
  .pricing-heading h2 { font-size: clamp(37px,9vw,53px); }
  .pricing-heading p { font-size: 12px; max-width: 380px; }
  .pricing-columns { display: flex; flex-direction: column; gap: 14px; }
  .pricing-panel { padding: 20px 21px; border-radius: 18px; }
  .pricing-panel h3 { font-size: 16px; }
  .contact { padding-top: 72px; }
  .contact-wave { height: 88px; }
  .contact-logo { width: 90px; height: 90px; }
  .contact h2 { font-size: clamp(42px,9vw,54px); }
  .contact-inner > p { font-size: 12px; }
  .contact-info { display: block; text-align: center; margin-top: 78px; }
  .address-link { display: inline-block; margin-top: 18px; }
  .site-footer { flex-wrap: wrap; text-align: center; justify-content: center; }
  .site-footer span:nth-child(2) { display: none; }
}
@media(max-width:375px) {
  .hero { min-height: 710px; }
  .hero-visual { height: 330px; }
  .story-copy h2 { font-size: 39px; }
  .process-step { width: 100%; grid-template-columns: 118px minmax(0,1fr); }
  .step-art { width: 116px; height: 116px; }
}
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { animation-duration: .001ms!important; transition-duration: .001ms!important; }
  .js-animations .reveal,.process-step,.process-step .step-art,.process-step .step-number,.process-step h3,.process-step p { opacity: 1; transform: none; }
  .hero-copy,.hero-visual { opacity: 1; transform: none; }
  .process-route path,.story-ribbon path { stroke-dashoffset: 0!important; }
}