:root{--primary:#6C4FF8;--primary-soft:#9B8AFB;--ink:#252331;--ink-strong:#1E1B2E;--muted:#716E7E;--bg:#F7F6FB;--panel:#EEEAF8;--accent:#F06A8A;--white:#fff;--line:#ddd8eb;--shadow:0 18px 45px rgba(40,31,74,.09);--radius:24px;--radius-sm:14px;--shell:min(1180px,calc(100% - 40px))}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.72}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button,input{font:inherit}p{margin:0 0 1em}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:fixed;left:18px;top:14px;transform:translateY(-160%);z-index:999;background:var(--ink-strong);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{transform:none}.site-header{position:sticky;top:0;z-index:80;background:rgba(247,246,251,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(221,216,235,.85)}.header-grid{min-height:76px;display:grid;grid-template-columns:auto 1fr;align-items:center;gap:28px}.brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content}.brand img{width:42px;height:42px;object-fit:contain;border-radius:12px}.brand span{display:grid;line-height:1.18}.brand strong{font-size:1.06rem;color:var(--ink-strong)}.brand small{margin-top:4px;color:var(--muted);font-size:.74rem}.site-nav{justify-self:end;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.site-nav a{padding:9px 12px;border-radius:10px;color:#514d60;font-size:.94rem}.site-nav a:hover,.site-nav a[aria-current="page"]{background:#e8e3fa;color:#4d32d7}.menu-button{display:none;border:0;background:var(--panel);color:var(--ink-strong);padding:9px 14px;border-radius:10px}.hero{padding:76px 0 70px;display:grid;grid-template-columns:minmax(0,1.03fr) minmax(360px,.97fr);gap:68px;align-items:center}.hero-copy h1,.page-intro h1,.index-head h1{font-size:clamp(2.35rem,5vw,5rem);line-height:1.06;letter-spacing:-.045em;margin:.15em 0 .34em;color:var(--ink-strong);max-width:13ch}.page-intro h1{font-size:clamp(2.15rem,4.2vw,4.1rem);max-width:15ch}.eyebrow{text-transform:none;color:#5c42df;font-weight:800;letter-spacing:.08em;font-size:.78rem;margin-bottom:12px}.lead{font-size:clamp(1.03rem,1.6vw,1.25rem);color:#5f5b6c;max-width:720px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;min-height:46px;align-items:center;justify-content:center;padding:0 18px;border-radius:13px;font-weight:750;border:1px solid transparent}.button.primary{background:var(--primary);color:#fff;box-shadow:0 12px 28px rgba(108,79,248,.24)}.button.primary:hover{background:#5c3fe8}.button.ghost{background:#fff;border-color:var(--line);color:#3f3954}.button.ghost:hover{border-color:#b9aedc;background:#fbfaff}.quick-points{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-wrap:wrap;gap:10px}.quick-points li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px;color:#5a5664;font-size:.88rem}.hero-media,.side-media{margin:0;position:relative}.hero-media:before{content:"";position:absolute;inset:7% -4% -5% 8%;background:linear-gradient(145deg,#ded7ff,#f6dce4);border-radius:34px;z-index:-1;transform:rotate(2deg)}.hero-media img,.side-media img,.page-intro img,.media-band img{width:100%;object-fit:cover;border-radius:28px;box-shadow:var(--shadow);background:#e9e6ef}.hero-media figcaption{font-size:.8rem;color:var(--muted);padding:10px 5px}.flow-section,.reading-section,.device-preview,.faq-section{padding:72px 0;border-top:1px solid var(--line)}.section-heading{max-width:770px;margin-bottom:32px}.section-heading h2,.article-flow h2{font-size:clamp(1.75rem,3vw,2.75rem);line-height:1.16;letter-spacing:-.03em;color:var(--ink-strong);margin:.1em 0 .4em}.section-heading p:not(.eyebrow){color:var(--muted);font-size:1.03rem}.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}.feature-strip article,.info-card,.device-cards article,.checklist article,.numbered-steps article,.decision-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px}.feature-strip span{display:inline-grid;place-items:center;width:34px;height:34px;background:#eeeafd;border-radius:50%;color:#5841d2;font-weight:800;font-size:.8rem}.feature-strip h3,.info-card h3,.device-cards h3,.checklist h3,.numbered-steps h3,.decision-grid h3{margin:14px 0 7px;color:var(--ink-strong);font-size:1.08rem}.feature-strip p,.info-card p,.device-cards p,.checklist p,.numbered-steps p,.decision-grid p{color:var(--muted);margin-bottom:0}.text-link{display:inline-flex;color:#5b3fe0;font-weight:700;margin-top:10px}.text-link:hover{text-decoration:underline}.text-link.strong{font-size:1.03rem}.split-section{padding:72px 0;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center;border-top:1px solid var(--line)}.split-main>h2{font-size:clamp(1.8rem,3vw,2.9rem);line-height:1.15;margin:.1em 0 .4em;color:var(--ink-strong)}.split-main>p{color:var(--muted);font-size:1.03rem}.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}.mini-grid a{display:grid;gap:4px;background:#fff;border:1px solid var(--line);padding:18px;border-radius:14px}.mini-grid a:hover{border-color:#b8addf;transform:translateY(-1px)}.mini-grid span{color:var(--muted);font-size:.9rem}.side-media img{aspect-ratio:7/8}.reading-list{display:grid;gap:0;border-top:1px solid var(--line)}.reading-list article{display:grid;grid-template-columns:260px 1fr;gap:34px;padding:24px 0;border-bottom:1px solid var(--line)}.reading-list h3{margin:0;color:var(--ink-strong)}.reading-list p{margin:0;color:var(--muted)}.device-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:24px}.device-cards ul,.device-deep-grid ul{padding-left:18px;color:#5f5a6c}.device-cards li+li,.device-deep-grid li+li{margin-top:6px}.faq-list{display:grid;gap:10px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:750;color:var(--ink-strong);padding:18px 0}.faq-list p{color:var(--muted);padding:0 0 17px;margin:0}.site-footer{margin-top:70px;background:var(--ink-strong);color:#d8d2e8}.footer-grid{padding:54px 0 40px;display:grid;grid-template-columns:1.2fr .8fr;gap:70px}.footer-brand{font-weight:850;color:#fff;font-size:1.3rem}.footer-grid p{max-width:600px;color:#bdb5cd}.footer-grid nav{display:grid;grid-template-columns:1fr 1fr;gap:9px 20px;align-content:start}.footer-grid nav a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:17px 0 30px;display:flex;justify-content:space-between;gap:20px;color:#aaa2bb;font-size:.88rem}.page-shell{padding-top:28px}.breadcrumb ol{list-style:none;padding:0;margin:10px 0 20px;display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.88rem}.breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:#aaa4b3}.breadcrumb a:hover{color:#5b3fe0}.page-intro{display:grid;grid-template-columns:1fr minmax(330px,.78fr);gap:44px;align-items:center;padding:34px 0 64px}.page-intro img{aspect-ratio:13/9}.article-flow{max-width:980px;margin:0 auto;padding:56px 0;border-top:1px solid var(--line)}.article-flow>p,.long-copy p{font-size:1.04rem;color:#555160}.numbered-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}.numbered-steps b{font-size:.82rem;color:#6248df;background:#eeeafd;border-radius:999px;padding:5px 9px}.comparison{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}.comparison.wide{grid-template-columns:repeat(4,1fr)}.comparison article{padding:18px 0;border-top:3px solid #c9bff5}.comparison h3{margin:0 0 8px}.comparison p{color:var(--muted);margin:0}.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.info-card .eyebrow{margin:0 0 8px}.media-band{max-width:1080px;display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}.media-band img{aspect-ratio:4/3}.media-band ol{padding-left:20px;color:#575263}.checklist{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}blockquote{margin:28px 0 0;padding:19px 22px;border-left:4px solid var(--accent);background:#fff;border-radius:0 14px 14px 0;color:#4b4656}.prose-list{padding-left:20px}.prose-list li+li{margin-top:12px}.device-deep-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:20px 0 58px}.device-deep-grid article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px}.device-deep-grid h2{margin-top:0}.note-panel{margin-top:24px;background:#eeeafd;border:1px solid #d7cff6;border-radius:16px;padding:20px}.note-panel p{margin:.4em 0 0}.topic-links{display:grid;gap:10px;margin-top:24px}.topic-links a{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding:15px 0}.topic-links span{color:var(--muted);font-size:.92rem}.index-head{padding:36px 0 44px}.index-head h1{max-width:none}.index-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.index-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;display:block}.index-card:hover{border-color:#b8addf;box-shadow:var(--shadow)}.index-card>span{display:inline-block;color:#6349de;background:#eeeafd;border-radius:999px;padding:5px 9px;font-size:.78rem;font-weight:700}.index-card h2{font-size:1.35rem;margin:15px 0 8px}.index-card p{color:var(--muted)}.index-card b{color:#5a3edf}.decision-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.decision-grid a{display:inline-flex;margin-top:12px;color:#5b3fe0;font-weight:750}.not-found{padding:110px 0;max-width:700px}.not-found h1{font-size:clamp(2.2rem,5vw,4.5rem);line-height:1.05;margin:.1em 0 .3em}.not-found>p:not(.eyebrow){color:var(--muted);font-size:1.08rem}.menu-button:focus-visible,.site-nav a:focus-visible,.button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(240,106,138,.55);outline-offset:3px}
@media(max-width:900px){:root{--shell:min(100% - 30px,760px)}.header-grid{grid-template-columns:1fr auto}.menu-button{display:block;justify-self:end}.site-nav{display:none;grid-column:1/-1;justify-self:stretch;padding:0 0 14px}.site-nav[data-open="true"]{display:grid;grid-template-columns:1fr 1fr}.site-nav a{background:#fff;border:1px solid var(--line)}.hero,.split-section,.page-intro,.media-band{grid-template-columns:1fr}.hero{padding-top:54px;gap:40px}.hero-copy h1{max-width:16ch}.hero-media{max-width:680px}.page-intro{gap:30px}.page-intro img{max-width:620px}.feature-strip,.device-cards,.checklist,.numbered-steps{grid-template-columns:1fr 1fr}.comparison.wide{grid-template-columns:1fr 1fr}.reading-list article{grid-template-columns:1fr;gap:7px}.footer-grid{grid-template-columns:1fr;gap:32px}}
@media(max-width:620px){:root{--shell:calc(100% - 24px)}body{line-height:1.66}.header-grid{min-height:68px}.brand small{display:none}.site-nav[data-open="true"]{grid-template-columns:1fr}.hero{padding:42px 0 48px}.hero-copy h1,.page-intro h1{font-size:clamp(2.15rem,13vw,3.45rem)}.quick-points{display:grid}.feature-strip,.device-cards,.checklist,.numbered-steps,.comparison,.comparison.wide,.card-grid,.device-deep-grid,.index-grid,.decision-grid{grid-template-columns:1fr}.mini-grid{grid-template-columns:1fr}.flow-section,.reading-section,.device-preview,.faq-section{padding:52px 0}.split-section{padding:52px 0}.article-flow{padding:44px 0}.topic-links a{display:grid;gap:3px}.footer-grid nav{grid-template-columns:1fr}.footer-bottom{display:grid}.hero-media:before{inset:6% 0 -4% 4%}.button{width:100%}.button-row{display:grid}.page-intro{padding-bottom:48px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* Extended content patterns */
.content-tone-1{max-width:724px;margin-inline:auto;padding:11px 0} .content-tone-1 p{text-wrap:pretty}
.content-tone-2{max-width:728px;margin-inline:auto;padding:12px 0} .content-tone-2 p{text-wrap:pretty}
.content-tone-3{max-width:732px;margin-inline:auto;padding:13px 0} .content-tone-3 p{text-wrap:pretty}
.content-tone-4{max-width:736px;margin-inline:auto;padding:14px 0} .content-tone-4 p{text-wrap:pretty}
.content-tone-5{max-width:740px;margin-inline:auto;padding:15px 0} .content-tone-5 p{text-wrap:pretty}
.content-tone-6{max-width:744px;margin-inline:auto;padding:10px 0} .content-tone-6 p{text-wrap:pretty}
.content-tone-7{max-width:748px;margin-inline:auto;padding:11px 0} .content-tone-7 p{text-wrap:pretty}
.content-tone-8{max-width:752px;margin-inline:auto;padding:12px 0} .content-tone-8 p{text-wrap:pretty}
.content-tone-9{max-width:756px;margin-inline:auto;padding:13px 0} .content-tone-9 p{text-wrap:pretty}
.content-tone-10{max-width:760px;margin-inline:auto;padding:14px 0} .content-tone-10 p{text-wrap:pretty}
.content-tone-11{max-width:764px;margin-inline:auto;padding:15px 0} .content-tone-11 p{text-wrap:pretty}
.content-tone-12{max-width:768px;margin-inline:auto;padding:10px 0} .content-tone-12 p{text-wrap:pretty}
.content-tone-13{max-width:772px;margin-inline:auto;padding:11px 0} .content-tone-13 p{text-wrap:pretty}
.content-tone-14{max-width:776px;margin-inline:auto;padding:12px 0} .content-tone-14 p{text-wrap:pretty}
.content-tone-15{max-width:780px;margin-inline:auto;padding:13px 0} .content-tone-15 p{text-wrap:pretty}
.content-tone-16{max-width:784px;margin-inline:auto;padding:14px 0} .content-tone-16 p{text-wrap:pretty}
.content-tone-17{max-width:788px;margin-inline:auto;padding:15px 0} .content-tone-17 p{text-wrap:pretty}
.content-tone-18{max-width:792px;margin-inline:auto;padding:10px 0} .content-tone-18 p{text-wrap:pretty}
.content-tone-19{max-width:796px;margin-inline:auto;padding:11px 0} .content-tone-19 p{text-wrap:pretty}
.content-tone-20{max-width:800px;margin-inline:auto;padding:12px 0} .content-tone-20 p{text-wrap:pretty}
.content-tone-21{max-width:804px;margin-inline:auto;padding:13px 0} .content-tone-21 p{text-wrap:pretty}
.content-tone-22{max-width:808px;margin-inline:auto;padding:14px 0} .content-tone-22 p{text-wrap:pretty}
.content-tone-23{max-width:812px;margin-inline:auto;padding:15px 0} .content-tone-23 p{text-wrap:pretty}
.content-tone-24{max-width:816px;margin-inline:auto;padding:10px 0} .content-tone-24 p{text-wrap:pretty}
.content-tone-25{max-width:820px;margin-inline:auto;padding:11px 0} .content-tone-25 p{text-wrap:pretty}
.content-tone-26{max-width:824px;margin-inline:auto;padding:12px 0} .content-tone-26 p{text-wrap:pretty}
.content-tone-27{max-width:828px;margin-inline:auto;padding:13px 0} .content-tone-27 p{text-wrap:pretty}
.content-tone-28{max-width:832px;margin-inline:auto;padding:14px 0} .content-tone-28 p{text-wrap:pretty}
.content-tone-29{max-width:836px;margin-inline:auto;padding:15px 0} .content-tone-29 p{text-wrap:pretty}
.content-tone-30{max-width:840px;margin-inline:auto;padding:10px 0} .content-tone-30 p{text-wrap:pretty}
.guide-jump{position:sticky;top:77px;z-index:20;display:flex;gap:8px;overflow:auto;padding:12px;background:rgba(247,246,251,.96);border:1px solid var(--line);border-radius:14px;margin-bottom:18px}.guide-jump a{white-space:nowrap;background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px;font-size:.86rem;color:#554e65}.guide-jump a:hover{border-color:#b7abdf;color:#5b3fe0}.guide-items{display:grid;grid-template-columns:1fr 1fr;gap:14px}.guide-items article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}.guide-items h3{margin:0 0 8px;color:var(--ink-strong);font-size:1.08rem}.guide-items p{margin:0;color:var(--muted)}@media(max-width:700px){.guide-items{grid-template-columns:1fr}.guide-jump{top:69px}}

.deep-faq{max-width:920px;margin-inline:auto}.deep-faq details{box-shadow:0 5px 18px rgba(40,31,74,.035)}
