/* Base typography, tokens and accessibility */
:root{--ink:#142136;--mid:#48566b;--muted:#69778a;--navy:#101b32;--blue:#355df4;--orange:#f4a76f;--paper:#faf9f7;--white:#fff;--line:#e3e5e7;--soft:#eef2f8;--radius:18px;--max:1180px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;font-size:16px;line-height:1.78}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{letter-spacing:-.035em;line-height:1.25}h1{font-size:clamp(2.6rem,5.4vw,5.2rem);font-weight:850;line-height:1.18}h2{font-size:clamp(1.85rem,3vw,2.85rem);font-weight:800}h3{font-size:1.3rem}p{color:var(--mid)}strong{font-weight:750}em{font-style:normal;color:var(--blue)}:focus-visible{outline:3px solid #ffae5d;outline-offset:4px}.shell{width:min(calc(100% - 64px),var(--max));margin-inline:auto}.skip-link{position:absolute;top:-100px;left:14px;z-index:99;background:#fff;padding:10px 18px}.skip-link:focus{top:12px}.site-header{position:relative;z-index:10;background:#fff;border-bottom:1px solid var(--line)}.masthead{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:88px}.brand{display:flex;align-items:center;gap:12px;font-weight:850;font-size:1.3rem;white-space:nowrap}.brand:hover{color:var(--ink)}.brand-mark{display:grid;place-items:center;position:relative;width:46px;height:46px;border-radius:12px;background:var(--navy);color:#fff;font-size:20px}.brand-mark span{color:var(--orange)}.brand-text{line-height:1.1}.brand-text small{display:block;margin-top:6px;font-size:10px;font-weight:800;letter-spacing:.24em;color:var(--muted)}.primary-nav{display:flex;align-items:center;gap:clamp(10px,2vw,28px);font-size:13px;font-weight:700}.primary-nav a{white-space:nowrap;transition:color .2s}.primary-nav a[aria-current=page]{color:var(--blue)}.menu-toggle{display:none;border:1px solid var(--line);padding:8px 12px;border-radius:9px;background:#fff;cursor:pointer}.kicker{display:inline-block;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--blue);font-weight:850;margin-bottom:18px}.section-pad{padding-block:105px}.section-heading{margin-bottom:38px;max-width:760px}.section-heading h2{margin-bottom:18px}.section-heading p{font-size:17px}.spread{max-width:none;display:flex;align-items:end;justify-content:space-between;gap:24px}.eyebrow{font-size:12px;letter-spacing:.13em;font-weight:850;color:#b9c8f5;text-transform:uppercase}.pulse{display:inline-block;width:7px;height:7px;border-radius:50%;background:#ffaf76;vertical-align:middle;margin-right:7px;box-shadow:0 0 0 5px #f4a76f22}.home-opening{background:var(--navy);color:#fff;overflow:hidden}.opening-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:65px;min-height:640px;align-items:center}.opening-copy{padding-block:75px}.opening-copy h1{margin:25px 0;letter-spacing:-.06em}.opening-copy em{color:#ffb679}.lead{font-size:19px;line-height:1.85}.opening-copy .lead{color:#c2cce0;max-width:560px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:33px 0 24px}.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;min-height:51px;border-radius:9px;padding:12px 22px;font-size:14px;font-weight:800;transition:background .2s,transform .2s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:#ffb578;color:#1d2430}.btn-primary:hover{color:#131a28;background:#ffd09a}.btn-outline{border:1px solid #6c7c9c;color:#fff}.btn-outline:hover{color:#fff;border-color:#fff}.hero-footnote{font-size:12px;color:#8e9bb5}.opening-art{position:relative;align-self:stretch;display:flex;align-items:center;min-width:0}.opening-art>img{width:100%;height:540px;object-fit:cover;border-radius:120px 16px 16px 16px;filter:saturate(.84)}.art-note{position:absolute;bottom:34px;left:-26px;background:#fff;color:var(--ink);padding:22px 27px;border-radius:9px;box-shadow:0 20px 40px #04081244}.art-note span{display:block;color:var(--blue);font-size:11px;font-weight:850;letter-spacing:.2em;margin-bottom:8px}.art-note strong{font-size:18px;line-height:1.5}.choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.choice{overflow:hidden;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:0 6px 25px #1c273407;transition:transform .2s,box-shadow .2s}.choice:hover{transform:translateY(-5px);box-shadow:0 18px 34px #1c273414}.choice-n{padding:18px 22px 14px;font-size:11px;color:var(--muted);font-weight:850;letter-spacing:.15em}.choice img{width:calc(100% - 44px);margin:0 22px;height:190px;object-fit:cover;border-radius:10px}.choice>div{padding:25px 22px 26px;display:flex;flex-direction:column;flex:1}.choice h3{font-size:23px;margin-bottom:12px}.choice p{font-size:14px;line-height:1.85;flex:1}.choice div span{font-size:13px;font-weight:800;color:var(--blue);margin-top:10px}.feature-band{background:#eaeef3}.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:85px;align-items:center;padding-block:85px}.feature-photo img{width:100%;height:430px;object-fit:cover;border-radius:12px 110px 12px 12px}.feature-copy h2{margin-bottom:25px}.feature-copy p{font-size:16px}.feature-list{list-style:none;padding:0;margin:26px 0}.feature-list li{border-bottom:1px solid #ccd3dc;padding:11px 0 11px 26px;position:relative;font-weight:650;font-size:14px}.feature-list li:before{content:'✓';position:absolute;left:0;color:var(--blue)}.inline-button{display:inline-flex;align-items:center;gap:20px;padding:13px 0;border-bottom:2px solid var(--blue);font-weight:800;color:var(--blue)}.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.article-card{padding:30px;border-radius:13px;background:#fff;border:1px solid var(--line);min-height:265px;display:flex;flex-direction:column}.article-card__meta{font-size:11px;color:var(--blue);letter-spacing:.12em;font-weight:850;margin-bottom:18px}.article-card h3{font-size:22px;max-width:380px;margin-bottom:16px}.article-card p{font-size:14px;flex:1}.text-link{color:var(--blue);font-weight:800;font-size:14px}.bottom-cta{display:flex;justify-content:space-between;align-items:center;gap:50px;border-radius:17px;padding:52px 60px;margin-bottom:105px;background:var(--navy);color:#fff}.bottom-cta h2{font-size:clamp(1.5rem,2.6vw,2.5rem);max-width:720px}.bottom-cta p{color:#c5cfde;max-width:650px;margin-bottom:0}.bottom-cta .btn{flex-shrink:0}.site-footer{background:#101829;color:#e4e8f0}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:80px;padding-block:73px}.footer-brand{font-size:23px;font-weight:850;margin-bottom:15px}.footer-grid p{font-size:13px;color:#a6b0c0;line-height:1.95}.footer-grid nav{display:flex;flex-direction:column;gap:10px}.footer-grid strong{font-size:13px;color:#fff;margin-bottom:12px}.footer-grid a{font-size:13px;color:#c3cede}.footer-grid a:hover{color:#ffb679}.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding:19px 0;border-top:1px solid #ffffff1e;color:#8190a5;font-size:12px}.crumb{display:flex;align-items:center;gap:13px;padding-top:26px;color:#768394;font-size:12px}.crumb a:hover{color:var(--blue)}.inner-head{display:grid;grid-template-columns:1.1fr .75fr;align-items:center;gap:60px;padding-top:65px;padding-bottom:70px}.inner-head h1{font-size:clamp(2.6rem,4.8vw,4.8rem)}.inner-head p{font-size:18px;max-width:620px}.inner-head img{width:100%;height:370px;object-fit:cover;border-radius:110px 10px 10px 10px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:85px;border-top:1px solid var(--line);align-items:start}.article-main{max-width:760px}.article-main h2{font-size:clamp(1.5rem,2.4vw,2.15rem);margin:0 0 22px}.article-main h2:not(:first-child){margin-top:58px}.article-main p{font-size:16px;line-height:2}.article-main>p{margin-bottom:21px}.article-main h3{margin-bottom:14px}.number-steps{padding:0;margin:18px 0 40px;list-style:none;counter-reset:steps}.number-steps li{counter-increment:steps;position:relative;padding:23px 0 22px 64px;border-bottom:1px solid var(--line)}.number-steps li:before{content:counter(steps,decimal-leading-zero);position:absolute;left:0;top:20px;color:var(--blue);font-size:22px;font-weight:850}.number-steps strong{font-size:18px}.number-steps p{margin:10px 0 0}.check-list{list-style:none;margin:0 0 24px;padding:0}.check-list li{position:relative;padding:14px 0 14px 31px;border-bottom:1px solid var(--line);color:var(--mid)}.check-list li:before{content:'✓';position:absolute;left:0;font-weight:850;color:var(--blue)}.info-panel{padding:32px 36px;margin-top:34px;border-left:4px solid var(--blue);background:#edf2fb;border-radius:0 9px 9px 0}.info-panel p{margin:0}.article-aside img{width:100%;margin-top:25px;max-height:340px;object-fit:cover;border-radius:14px}.sticky-note{background:#fff;border:1px solid var(--line);border-radius:13px;padding:30px;position:sticky;top:16px}.sticky-note h3{font-size:23px}.sticky-note p{font-size:14px}.sticky-note a{font-size:13px;font-weight:850;color:var(--blue)}.related{padding-bottom:100px}.related .section-heading{margin-bottom:27px}.related .section-heading h2{font-size:27px}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-link{display:grid;grid-template-columns:1fr 16px;gap:4px;padding:20px;border:1px solid var(--line);background:#fff;border-radius:10px}.related-link span{font-weight:800}.related-link small{color:var(--muted);font-size:12px;grid-column:1}.related-link b{color:var(--blue);grid-column:2;grid-row:1}.film-top{background:#e9eef9}.film-top-grid{display:grid;grid-template-columns:1fr .9fr;gap:60px;align-items:center;min-height:530px;padding-block:65px}.film-top h1{font-size:clamp(2.5rem,4.6vw,4.7rem)}.film-top p{max-width:610px}.film-art img{width:100%;height:390px;object-fit:cover;border-radius:12px 110px 12px 12px}.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.mode-card{background:#fff;padding:35px;border:1px solid var(--line);border-radius:12px;min-height:300px}.mode-count{font-size:40px;line-height:1;color:#bdc9e3;font-weight:850}.mode-card h3{font-size:21px;margin:29px 0 16px}.mode-card p{font-size:14px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:20px}.comparison>div{border:1px solid var(--line);background:#fff;border-radius:10px;padding:24px}.comparison strong{display:block;margin-bottom:10px;color:var(--ink)}.comparison p{font-size:14px;margin:0}.guide-heading{padding-top:84px;padding-bottom:72px}.guide-heading h1{max-width:900px}.guide-heading p{max-width:790px;margin:25px 0 36px}.guide-heading>img{width:100%;max-height:420px;object-fit:cover;border-radius:15px}.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.device-grid article{background:#fff;border:1px solid var(--line);padding:35px 28px;border-radius:12px}.device-icon{width:48px;height:48px;border-radius:12px;background:#e8efff;color:var(--blue);display:grid;place-items:center;font-size:22px;margin-bottom:22px}.device-grid h3{font-size:23px}.device-grid p{font-size:14px}.safety-heading{background:#14223b;color:#fff}.safety-grid{display:grid;grid-template-columns:1fr .8fr;gap:55px;align-items:center;padding-block:74px}.safety-grid h1{font-size:clamp(2.8rem,4.7vw,4.8rem)}.safety-grid p{color:#c0cbde}.safety-grid img{width:100%;height:350px;object-fit:cover;border-radius:100px 12px 12px 12px}.risk-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}.risk-list article{background:#fff;border:1px solid var(--line);padding:32px;border-radius:11px;display:grid;grid-template-columns:50px 1fr;gap:22px}.risk-num{font-size:30px;font-weight:850;color:#bdc5d3}.risk-list h3{font-size:19px}.risk-list p{font-size:14px;margin:0}.faq-heading{display:grid;grid-template-columns:1fr 370px;align-items:center;gap:50px;padding-block:65px}.faq-heading h1{font-size:clamp(2.7rem,5vw,5rem)}.faq-heading p{max-width:670px;font-size:18px}.faq-heading img{width:100%;height:290px;object-fit:cover;border-radius:12px 90px 12px 12px}.faq-section{display:grid;grid-template-columns:280px 1fr;gap:80px;padding:75px 0 100px;border-top:1px solid var(--line)}.faq-sidebar h2{font-size:31px}.faq-sidebar p{font-size:14px}.faq-list{border-top:1px solid var(--line)}.faq-list details{border-bottom:1px solid var(--line);padding:0}.faq-list summary{position:relative;padding:24px 36px 24px 3px;font-size:18px;font-weight:780;cursor:pointer;list-style:none}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:'+';font-size:24px;position:absolute;right:4px;top:19px;color:var(--blue)}.faq-list details[open] summary:after{content:'−'}.faq-list details p{margin:-4px 0 23px;max-width:680px;font-size:15px}.faq-section+.bottom-cta{margin-top:0}
/* Interactive states and comfortable tablet navigation */
@media(max-width:1120px){.primary-nav{gap:12px;font-size:12px}.masthead{gap:12px}.shell{width:min(calc(100% - 44px),var(--max))}.opening-grid{gap:35px}.feature-layout{gap:42px}.article-layout{gap:45px}.footer-grid{gap:40px}}
@media(max-width:900px){.masthead{min-height:76px;flex-wrap:wrap}.menu-toggle{display:block}.primary-nav{display:none;flex-basis:100%;padding:0 0 16px;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.primary-nav.is-open{display:grid}.primary-nav a{white-space:normal;text-align:center;padding:10px 6px;border:1px solid var(--line);border-radius:7px}.opening-grid,.feature-layout,.inner-head,.film-top-grid,.safety-grid,.faq-heading{grid-template-columns:1fr 1fr;gap:30px}.opening-grid{min-height:540px}.opening-copy{padding-block:48px}.opening-art>img{height:420px;border-top-left-radius:75px}.art-note{left:-14px;bottom:20px}.art-note strong{font-size:14px}.article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:30px}.article-aside .sticky-note{padding:24px}.related-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr;gap:35px}.footer-grid>div:last-child{grid-column:1/-1}.choice img{height:145px}.choice h3{font-size:19px}.mode-card{padding:24px}.mode-card h3{font-size:18px}.faq-section{gap:40px;grid-template-columns:225px 1fr}.bottom-cta{padding:40px}}
@media(max-width:680px){body{font-size:15px}.shell{width:min(calc(100% - 32px),var(--max))}.section-pad{padding-block:66px}.section-heading{margin-bottom:25px}.opening-grid,.feature-layout,.inner-head,.film-top-grid,.safety-grid,.faq-heading{grid-template-columns:1fr}.opening-grid{gap:0}.opening-copy{padding-top:57px;padding-bottom:34px}.opening-copy h1{font-size:clamp(2.45rem,10.4vw,4rem)}.opening-copy .lead{font-size:16px}.opening-art{max-width:520px;padding-bottom:48px}.opening-art>img{height:270px;border-top-left-radius:80px}.art-note{left:auto;right:12px;bottom:24px;padding:14px 17px}.hero-actions{align-items:stretch;gap:8px}.hero-actions .btn{font-size:12px;padding:10px 14px;gap:10px}.choice-grid,.article-grid,.mode-grid,.device-grid,.risk-list,.comparison,.related-grid{grid-template-columns:1fr}.choice img{height:200px}.feature-layout{padding-block:63px}.feature-photo img{height:260px;border-top-right-radius:65px}.feature-copy h2{font-size:30px}.spread{display:block}.spread>a{display:inline-block;margin-top:6px}.article-card{min-height:0}.bottom-cta{display:block;padding:30px 24px;margin-bottom:66px}.bottom-cta h2{font-size:26px}.bottom-cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr;gap:27px;padding-block:50px}.footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.crumb{padding-top:18px}.inner-head,.film-top-grid,.safety-grid{padding-block:45px}.inner-head h1,.film-top h1,.safety-grid h1{font-size:clamp(2.4rem,10vw,3.6rem)}.inner-head img,.film-art img,.safety-grid img{height:260px;border-radius:10px 65px 10px 10px}.article-layout{display:block}.article-main h2:not(:first-child){margin-top:42px}.article-aside{margin-top:40px}.article-aside .sticky-note{position:static}.article-aside img{display:none}.related{padding-bottom:65px}.related-grid{gap:10px}.mode-card{min-height:0}.guide-heading{padding-block:55px 35px}.guide-heading>img{height:250px}.risk-list article{padding:24px;grid-template-columns:38px 1fr;gap:13px}.faq-heading{padding-block:40px}.faq-heading img{height:200px}.faq-section{display:block;padding:42px 0 65px}.faq-sidebar{margin-bottom:25px}.faq-list summary{font-size:16px}.number-steps li{padding-left:45px}.number-steps li:before{font-size:18px}.info-panel{padding:22px}.section-heading h2{font-size:30px}.masthead{min-height:68px}.brand{font-size:1.13rem}.brand-mark{height:40px;width:40px}.primary-nav{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:380px){.hero-actions{flex-direction:column}.hero-actions .btn{justify-content:center}.opening-copy h1{font-size:2.2rem}.brand-text small{font-size:8px}.menu-toggle{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}