:root{--bg:#DDE0F4;--soft:#F7F7FC;--channel:#EEF0FA;--card:#fff;--accent:#8c6de6;--accent2:#7E5DDD;--nav:#554B7A;--text:#2E2E3A;--muted:#66667A;--footer:#4B4A6B;--footerText:#F3F2FB;--line:rgba(140,109,230,.16);--shadow:0 14px 36px rgba(140,109,230,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit}img{max-width:100%}.site-header{position:sticky;top:0;z-index:9999;width:100%;background:rgba(221,224,244,.94);backdrop-filter:blur(10px);box-shadow:0 6px 18px rgba(140,109,230,.08)}.header-inner{max-width:1160px;min-height:68px;margin:0 auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.site-logo{display:inline-flex;align-items:center;text-decoration:none;flex:0 0 auto}.site-logo img{display:block;height:40px;width:auto;max-width:168px;object-fit:contain}.logo-fallback{font-size:22px;font-weight:800;color:var(--accent);white-space:nowrap}.logo-fallback.light{color:#fff}.nav-core{display:flex;align-items:center;justify-content:center;gap:8px;min-width:0}.nav-core a{color:#554B7A;padding:8px 12px;font-weight:700;text-decoration:none;white-space:nowrap;background:rgba(255,255,255,.55);border-radius:999px}.nav-core a.is-current,.nav-core a:hover{color:#8c6de6;background:#FFFFFF;box-shadow:0 8px 18px rgba(140,109,230,.12)}.main-btn{display:inline-flex;align-items:center;justify-content:center;height:42px;min-width:96px;padding:0 20px;background:#8c6de6;color:#FFFFFF;border-radius:999px;text-decoration:none;font-weight:700;box-shadow:0 10px 22px rgba(140,109,230,.22);white-space:nowrap}.main-btn:hover{background:#7E5DDD}.menu-btn{display:none;border:0;background:#fff;border-radius:10px;width:42px;height:42px;padding:10px;flex-direction:column;justify-content:center;gap:4px}.menu-btn span{display:block;height:2px;background:var(--nav);border-radius:2px}.channel-bar{background:#EEF0FA;border-top:1px solid rgba(140,109,230,.08);border-bottom:1px solid rgba(140,109,230,.12)}.channel-inner{max-width:1160px;margin:0 auto;padding:10px 18px;display:flex;gap:7px;overflow-x:auto;scrollbar-width:thin}.channel-inner a{flex:0 0 auto;text-decoration:none;color:#66667A;font-size:14px;font-weight:700;padding:6px 9px;border-radius:9px}.channel-inner a:hover{color:#8c6de6;background:#fff}.mobile-drawer,.drawer-mask{display:none}.site-main{max-width:1160px;margin:0 auto;padding:32px 78px 56px 18px}.hero-slider{position:relative;border-radius:16px;background:#fff;overflow:hidden;height:310px;box-shadow:var(--shadow)}.hero-slide{position:absolute;inset:0;display:none;align-items:center;justify-content:center}.hero-slide.is-active{display:flex}.hero-slide img{width:100%;height:100%;object-fit:contain;display:block}.hero-placeholder{width:100%;height:100%;background:#EEF0FA}.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border:0;border-radius:50%;background:rgba(255,255,255,.9);color:var(--accent);font-size:24px;cursor:pointer;box-shadow:0 8px 18px rgba(75,74,107,.12)}.hero-prev{left:14px}.hero-next{right:14px}.hero-dots{position:absolute;left:0;right:0;bottom:12px;display:flex;justify-content:center;gap:8px}.hero-dot{width:9px;height:9px;border:0;border-radius:50%;background:#c8c2df;padding:0}.hero-dot.is-active{background:var(--accent)}.section{margin-top:46px}.section h1,.section h2,.article h1,.article h2{color:var(--accent);line-height:1.25}.section h1,.article h1{font-size:40px;margin:0 0 18px}.section h2,.article h2{font-size:26px;margin:0 0 14px}.lead{font-size:18px;line-height:1.85;color:#4a4658}.magazine-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(260px,1fr);gap:20px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}.stack{display:grid;gap:20px}.text-link{color:var(--accent);font-weight:800;text-decoration:none}.text-link:hover{text-decoration:underline}.topic-strip{display:flex;gap:10px;overflow-x:auto;padding:4px 2px 10px}.topic-strip a{flex:0 0 auto;background:#fff;color:var(--nav);border:1px solid var(--line);border-radius:999px;padding:10px 15px;text-decoration:none;font-weight:700}.topic-strip a:hover{color:var(--accent);border-color:var(--accent)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}.app-band{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#EEF0FA;aspect-ratio:16/9}.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#EEF0FA,#E4E2F5)}.article{max-width:840px;margin:0 auto;background:#fff;border-radius:16px;padding:34px;box-shadow:var(--shadow);border:1px solid var(--line)}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:20px}.breadcrumbs a{color:var(--accent);text-decoration:none}.article p,.article li{font-size:17px;line-height:1.84}.article ul,.article ol{padding-left:22px}.article .media{margin:24px 0}.article-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.article-links a{background:var(--soft);color:var(--nav);border:1px solid var(--line);padding:9px 12px;border-radius:10px;text-decoration:none;font-weight:700}.note{background:#F7F7FC;border-left:4px solid var(--accent);padding:14px 16px;border-radius:10px;margin:18px 0}.steps{counter-reset:step;display:grid;gap:12px;padding:0;list-style:none}.steps li{counter-increment:step;background:#F7F7FC;border-radius:12px;padding:14px 16px 14px 52px;position:relative}.steps li:before{content:counter(step);position:absolute;left:14px;top:14px;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800}.compare{display:grid;grid-template-columns:1fr 1fr;gap:14px}.compare>div{background:#F7F7FC;border-radius:12px;padding:16px}.faq-list details{background:#F7F7FC;border-radius:12px;padding:14px 16px;margin:12px 0}.faq-list summary{font-weight:800;color:var(--nav);cursor:pointer}.faq-list details[open] summary{color:var(--accent)}.floating-tools{position:fixed;right:10px;top:180px;z-index:9000;width:58px;display:grid;gap:8px}.floating-tools a,.floating-tools button{background:#fff;color:var(--accent);border:1px solid var(--line);border-radius:10px;padding:9px 5px;text-decoration:none;font-size:12px;line-height:1.25;text-align:center;font-family:inherit;cursor:pointer}.floating-tools .float-primary{background:var(--accent);color:#fff}.site-footer{background:#4B4A6B;color:#F3F2FB;padding:44px 18px 24px}.footer-grid{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}.site-footer h2{font-size:16px;margin:0 0 12px;color:#fff}.site-footer section>a:not(.site-logo){display:block;color:#F3F2FB;text-decoration:none;margin:8px 0;font-size:14px}.site-footer p{line-height:1.7;color:#e5e2f3}.footer-bottom{max-width:1160px;margin:28px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);font-size:13px;line-height:1.7;color:#ddd8ee}.mobile-bottom{display:none}body.drawer-open{overflow:hidden}
@media(max-width:980px){.header-inner{min-height:64px;padding:0 12px}.menu-btn{display:flex}.nav-core,.channel-bar{display:none}.site-logo img{height:36px;max-width:145px}.main-btn{height:40px;min-width:84px;padding:0 14px;font-size:14px}.site-main{padding:26px 14px 88px}.floating-tools{display:none}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;box-shadow:18px 0 40px rgba(75,74,107,.16);overflow-y:auto}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(75,74,107,.38);z-index:11000;opacity:0;pointer-events:none;transition:opacity .18s ease}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid #eee}.drawer-close{border:0;background:#F7F7FC;color:var(--nav);width:38px;height:38px;border-radius:10px;font-size:28px;line-height:1}.drawer-groups{padding:8px 14px 28px}.drawer-groups section{padding:12px 0;border-bottom:1px solid #efeff5}.drawer-groups h2{font-size:13px;color:var(--muted);margin:0 0 7px}.drawer-groups a{display:block;padding:8px 4px;text-decoration:none;color:var(--nav);font-weight:700}.hero-slider{height:180px}.section{margin-top:34px}.section h1,.article h1{font-size:30px}.section h2,.article h2{font-size:23px}.magazine-grid,.two-col,.app-band{grid-template-columns:1fr}.article{padding:22px 18px}.compare{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:10000;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 22px rgba(75,74,107,.08)}.mobile-bottom a{text-align:center;text-decoration:none;color:var(--nav);font-weight:800;padding:13px 4px;font-size:14px}}
@media(max-width:520px){.site-logo img{height:32px;max-width:128px}.main-btn{min-width:78px;padding:0 11px}.hero-slider{height:165px}.footer-grid{grid-template-columns:1fr}.article p,.article li{font-size:16px}.section h1,.article h1{font-size:28px}}