:root{--primary:#5B4BDB;--primary-soft:#8B7CF6;--ink:#1E1B2E;--body:#292734;--muted:#6F6B7A;--bg:#F7F7FB;--soft:#EFEFFC;--accent:#F05A7E;--white:#fff;--line:#DEDDEB;--shadow:0 18px 50px rgba(30,27,46,.08);--radius:24px;--radius-sm:14px;--shell:min(1180px,calc(100% - 40px));font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--body);background:var(--bg)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);line-height:1.72;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:var(--shell);margin-inline:auto}.skip-link{position:fixed;left:16px;top:12px;transform:translateY(-180%);z-index:999;background:var(--ink);color:#fff;padding:10px 14px;border-radius:10px}.skip-link:focus{transform:none}.site-header{position:sticky;top:0;z-index:80;background:rgba(247,247,251,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(222,221,235,.8)}.site-header__inner{height:78px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;min-width:max-content}.brand img{border-radius:13px;box-shadow:0 8px 24px rgba(91,75,219,.18)}.brand span{display:flex;flex-direction:column;line-height:1.2}.brand strong{font-size:1.15rem;color:var(--ink)}.brand small{margin-top:4px;color:var(--muted);font-size:.78rem}.desktop-nav{display:flex;align-items:center;justify-content:flex-end;gap:5px;margin-left:auto}.desktop-nav a{padding:10px 13px;border-radius:11px;color:var(--muted);font-size:.95rem}.desktop-nav a:hover,.desktop-nav a[aria-current=page]{background:var(--soft);color:var(--primary)}.menu-toggle{display:none;margin-left:auto;border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 14px;color:var(--ink)}.mobile-menu{border-top:1px solid var(--line);background:#fff}.mobile-menu nav{display:grid;padding-block:12px 18px}.mobile-menu a{padding:12px 4px;border-bottom:1px solid var(--line)}
.eyebrow{margin:0 0 13px;color:var(--primary);font-weight:800;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase}.hero{padding:72px 0 42px}.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:64px}.hero h1,.page-hero h1,.topic-hero h1,.video-head h1,.app-hero h1,.article-header h1{font-size:clamp(2.4rem,5vw,4.8rem);line-height:1.07;letter-spacing:-.045em;color:var(--ink);margin:0 0 24px}.hero__lead{font-size:1.15rem;color:var(--muted);max-width:680px}.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:13px;font-weight:800;border:1px solid transparent;cursor:pointer}.button--primary{background:var(--primary);color:#fff;box-shadow:0 10px 25px 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h2,.article-next h2,.article-related h2{margin:0 0 14px;color:var(--ink);font-size:clamp(1.6rem,3vw,2.35rem);line-height:1.2;letter-spacing:-.025em}.section-heading p:last-child,.feature-band p,.split-panel p,.secondary-strip p{color:var(--muted)}.section-heading--row{max-width:none;display:flex;align-items:end;justify-content:space-between;gap:30px}.text-link{color:var(--primary);font-weight:800}.text-link:hover{text-decoration:underline}.intro-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:70px}.path-list{display:grid;gap:10px}.path-item{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}.path-item--primary{border-color:rgba(91,75,219,.35);box-shadow:0 14px 35px rgba(91,75,219,.11)}.path-index{width:42px;height:42px;border-radius:12px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:900}.path-item span:nth-child(2){display:flex;flex-direction:column}.path-item strong{color:var(--ink);font-size:1.05rem}.path-item small{color:var(--muted);margin-top:4px}.path-item b{color:var(--primary);font-size:1.3rem}.feature-band{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:50px;background:#fff;border-radius:30px;border:1px solid var(--line);padding:18px;box-shadow:var(--shadow)}.feature-band__image img{width:100%;aspect-ratio:1.36/1;object-fit:cover;border-radius:22px}.feature-band__copy{padding:28px 30px 28px 10px}.inline-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:24px}.inline-links a{color:var(--primary);font-weight:800;border-bottom:1px solid rgba(91,75,219,.25)}.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.story-card{background:#fff;border:1px solid rgba(222,221,235,.9);border-radius:20px;padding:24px;display:flex;flex-direction:column;min-height:280px}.story-card__meta,.dense-card__top{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.78rem}.story-card h3{margin:20px 0 12px;color:var(--ink);font-size:1.18rem;line-height:1.4}.story-card p{margin:0 0 20px;color:var(--muted);font-size:.94rem}.story-card .text-link{margin-top:auto}.split-panel{display:grid;grid-template-columns:1fr .9fr;gap:64px;align-items:center}.split-panel--reverse{grid-template-columns:.9fr 1fr}.split-panel img{border-radius:26px;box-shadow:var(--shadow);width:100%;aspect-ratio:1.3/1;object-fit:cover}.check-list{padding:0;list-style:none;display:grid;gap:11px;margin:24px 0}.check-list li{position:relative;padding-left:30px}.check-list li:before{content:"✓";position:absolute;left:0;top:0;color:var(--primary);font-weight:900}.secondary-strip{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:30px 34px;background:var(--ink);color:#fff;border-radius:24px}.secondary-strip h2{color:#fff}.secondary-strip p{max-width:760px;color:#d9d6e4;margin-bottom:0}.secondary-strip .eyebrow{color:#b8adff}.brand--footer small{color:#aaa5b5}.breadcrumbs{padding-top:24px}.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0;color:var(--muted);font-size:.86rem}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#aaa6b1}.breadcrumbs a:hover{color:var(--primary)}
.page-hero,.topic-hero,.video-head,.app-hero{padding:58px 0 30px}.page-hero__narrow{max-width:900px}.page-hero h1,.topic-hero h1,.video-head h1,.app-hero h1{font-size:clamp(2.35rem,4.8vw,4.35rem)}.page-hero p:last-child,.topic-hero p,.video-head p,.app-hero p{font-size:1.08rem;color:var(--muted);max-width:800px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:70px;align-items:start}.prose{font-size:1.04rem}.prose h2{margin-top:42px}.prose p,.prose li{color:#45414f}.prose ul{padding-left:22px}.note-box{margin:30px 0;padding:24px;border-radius:18px;background:var(--soft);border-left:4px solid var(--primary)}.note-box p{margin-bottom:0}.dual-cta{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:28px 0}.dual-cta a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;flex-direction:column}.dual-cta strong{color:var(--ink)}.dual-cta span{margin-top:6px;color:var(--muted);font-size:.9rem}.side-stack{display:grid;gap:18px;position:sticky;top:100px}.side-stack>img{border-radius:20px;aspect-ratio:1.3/1;object-fit:cover}.side-card{background:#fff;border:1px solid var(--line);padding:20px;border-radius:18px}.side-card h2{font-size:1.12rem}.side-card a{display:flex;flex-direction:column;gap:4px;padding:14px 0;border-bottom:1px solid var(--line)}.side-card a:last-child{border-bottom:0}.side-card strong{font-size:.92rem;line-height:1.45}.side-card span{color:var(--muted);font-size:.78rem}.topic-hero__grid,.app-hero__grid{display:grid;grid-template-columns:1fr .8fr;gap:60px;align-items:center}.topic-hero img,.app-hero img{border-radius:28px;box-shadow:var(--shadow);aspect-ratio:1.32/1;object-fit:cover}.editorial-list{border-top:1px solid var(--line)}.editorial-row{display:grid;grid-template-columns:64px 1fr 48px;gap:20px;padding:28px 0;border-bottom:1px solid var(--line);align-items:start}.editorial-row__num{color:var(--primary-soft);font-weight:900;font-size:1.3rem}.editorial-row h3{font-size:1.35rem;margin:10px 0 8px;color:var(--ink)}.editorial-row p{margin:0;color:var(--muted);max-width:820px}.editorial-row__go{width:42px;height:42px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--primary)}.compact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.compact-cards article{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden}.compact-cards img{width:100%;aspect-ratio:1.6/1;object-fit:cover}.compact-cards h2{font-size:1.2rem;padding:0 20px;margin-top:20px}.compact-cards p{padding:0 20px 22px;color:var(--muted)}
.video-head__grid{display:grid;grid-template-columns:1fr .8fr;gap:60px;align-items:end}.video-head__panel{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden}.video-head__panel img{width:100%;aspect-ratio:1.9/1;object-fit:cover}.video-head__panel>div{display:grid;padding:18px 20px;gap:8px}.video-head__panel a{color:var(--primary);font-weight:700}.video-layout{display:grid;grid-template-columns:220px 1fr;gap:34px;align-items:start}.filter-panel{position:sticky;top:100px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;flex-wrap:wrap;gap:8px}.filter-panel h2{width:100%;margin:0 0 8px;font-size:1.1rem;color:var(--ink)}.filter-panel p{font-size:.8rem;color:var(--muted);margin:12px 0 0}.filter-chip{border:1px solid var(--line);background:#fff;padding:7px 10px;border-radius:999px;color:var(--muted);cursor:pointer;font-size:.84rem}.filter-chip.is-active,.filter-chip:hover{background:var(--soft);color:var(--primary);border-color:#d6d1fb}.dense-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.dense-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.dense-card.is-hidden{display:none}.dense-card h2{font-size:1.12rem;line-height:1.42;margin:14px 0 10px;color:var(--ink)}.dense-card p{color:var(--muted);font-size:.9rem;margin:0 0 16px}.three-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.three-steps article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px}.three-steps span{color:var(--accent);font-weight:900}.three-steps h2{font-size:1.25rem;margin-top:18px}.three-steps p{color:var(--muted)}
.article-header{padding:56px 0 44px}.article-header__inner{max-width:900px}.article-header h1{font-size:clamp(2.2rem,4.7vw,4.2rem);margin-top:16px}.article-header p{font-size:1.12rem;color:var(--muted);max-width:780px}.article-meta{display:flex;gap:18px;color:var(--muted);font-size:.86rem;margin-top:22px}.article-body{display:grid;grid-template-columns:minmax(0,760px) 300px;justify-content:space-between;gap:70px;padding-bottom:80px}.article-body__main{font-size:1.08rem}.article-body__main h2{color:var(--ink);font-size:1.6rem;line-height:1.3;margin:42px 0 14px}.article-body__main p{color:#45414f}.article-next{margin-top:48px;padding:26px;background:var(--soft);border-radius:20px}.article-next h2{margin-top:0}.article-related{position:sticky;top:100px}.article-related h2{font-size:1.1rem}.article-related a{display:flex;flex-direction:column;gap:6px;padding:16px 0;border-bottom:1px solid var(--line)}.article-related span{color:var(--primary);font-size:.76rem;font-weight:800}.article-related strong{font-size:.92rem;line-height:1.45}.search-page{padding:60px 0 90px}.search-intro{max-width:760px}.search-intro h1{font-size:clamp(2.2rem,4vw,3.7rem);color:var(--ink);line-height:1.1;margin:0 0 18px}.search-intro>p{color:var(--muted)}.search-form{margin-top:26px}.search-form label{display:block;font-weight:800;color:var(--ink);margin-bottom:8px}.search-form>div{display:flex;gap:10px}.search-form input{flex:1;min-width:0;border:1px solid var(--line);border-radius:13px;padding:12px 14px;background:#fff}.search-form input:focus{outline:3px solid rgba(91,75,219,.15);border-color:var(--primary)}.search-results{margin-top:54px}.empty-state{background:#fff;border:1px dashed var(--line);padding:34px;border-radius:20px}.not-found{min-height:64vh;display:grid;place-items:center}.not-found__inner{text-align:center;max-width:720px}.not-found__code{display:block;font-size:clamp(5rem,15vw,10rem);line-height:.8;color:var(--soft);font-weight:1000}.not-found h1{font-size:2.3rem;color:var(--ink);margin:26px 0 8px}.not-found p{color:var(--muted)}.not-found .hero__actions{justify-content:center}
.site-footer{background:var(--ink);color:#fff;padding:56px 0 24px}.footer-grid{display:grid;grid-template-columns:1.4fr .7fr .7fr;gap:60px}.footer-grid>div{display:flex;flex-direction:column;align-items:flex-start}.footer-grid h2{font-size:.92rem;margin:0 0 14px;color:#d7d3e2}.footer-grid a{margin:5px 0;color:#f3f1f7}.footer-note{color:#aaa5b5;max-width:520px;font-size:.9rem}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;display:flex;justify-content:space-between;color:#918c9d;font-size:.82rem}
:focus-visible{outline:3px solid rgba(240,90,126,.45);outline-offset:3px}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:block}.hero__grid,.intro-grid,.feature-band,.split-panel,.split-panel--reverse,.topic-hero__grid,.app-hero__grid,.video-head__grid,.article-layout,.article-body{grid-template-columns:1fr}.hero__grid,.topic-hero__grid,.app-hero__grid,.video-head__grid{gap:34px}.side-stack,.article-related,.filter-panel{position:static}.story-grid,.compact-cards,.three-steps{grid-template-columns:1fr 1fr}.video-layout{grid-template-columns:1fr}.filter-panel{display:flex}.filter-panel p{width:100%}.article-body{max-width:820px}.article-related{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.article-related h2{grid-column:1/-1}}
@media(max-width:680px){:root{--shell:min(100% - 28px,1180px)}.site-header__inner{height:68px}.brand small{display:none}.hero,.section{padding:50px 0}.hero h1,.page-hero h1,.topic-hero h1,.video-head h1,.app-hero h1,.article-header h1{font-size:2.35rem}.hero__visual{padding:9px;border-radius:22px}.section-heading--row,.secondary-strip{align-items:flex-start;flex-direction:column}.story-grid,.compact-cards,.three-steps,.dense-list,.dual-cta{grid-template-columns:1fr}.feature-band{padding:12px}.feature-band__copy{padding:20px 8px 12px}.editorial-row{grid-template-columns:44px 1fr}.editorial-row__go{display:none}.article-body__main{font-size:1rem}.article-related{grid-template-columns:1fr}.search-form>div{flex-direction:column}.footer-grid{grid-template-columns:1fr;gap:28px}.footer-bottom{flex-direction:column;gap:8px}.article-layout{gap:38px}.secondary-strip{padding:26px}.page-hero,.topic-hero,.video-head,.app-hero{padding-top:42px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}