:root{
    --primary:#4A9BD4; --primary-2:#6DB7E6; --sky:#8CCCF0; --sky-light:#CBE9F8; --sky-soft:#EDF8FD;
    --cream:#FFF9EE; --cream-2:#FFF4DF; --cream-3:#FDFBF6; --navy:#17344A; --navy-2:#244A64; --navy-soft:#4F6D80;
    --accent:#EF8E68; --accent-2:#F2B36F; --accent-soft:#FFF0E8; --bg:#FFFDF8; --bg-blue:#F3FAFE; --bg-cream:#FFF9EE;
    --surface:#FFFFFF; --surface-blue:#F8FCFF; --surface-cream:#FFFDF8; --text:#203542; --text-2:#5E7481; --text-3:#8A9AA3;
    --line:rgba(74,155,212,.12); --line-strong:rgba(74,155,212,.24); --line-warm:rgba(239,142,104,.14);
    --shadow:0 8px 28px rgba(31,88,124,.08); --shadow-hover:0 16px 42px rgba(31,88,124,.14);
    --radius:12px; --radius-card:18px; --radius-large:26px; --radius-pill:999px; --wrap:1320px;
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--bg);color:var(--text);font:16px/1.68 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif} body.search-open{overflow:hidden}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block} button,input{font:inherit} button{color:inherit}.wrap{width:min(var(--wrap),calc(100% - 40px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:9999;background:var(--navy);color:white;padding:10px 16px;border-radius:10px}.skip-link:focus{top:16px}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:800;letter-spacing:.08em;font-size:.78rem;text-transform:uppercase}.pill{display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--radius-pill);background:var(--sky-soft);color:var(--navy-2);font-size:.78rem;font-weight:700}.pill.warm{background:var(--accent-soft);color:#9b4e35}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-pill);padding:12px 20px;border:1px solid transparent;font-weight:800;cursor:pointer}.btn.primary{background:var(--primary);color:white}.btn.secondary{background:var(--cream);border-color:var(--line-strong);color:var(--navy)}.btn.ghost{background:transparent;border-color:rgba(255,255,255,.32);color:white}.text-link{font-weight:800;color:var(--primary)}
:focus-visible{outline:3px solid rgba(74,155,212,.46);outline-offset:3px}.site-notice{background:var(--cream-2);border-bottom:1px solid var(--line-warm);font-size:.86rem}.notice-inner{display:flex;justify-content:space-between;gap:18px;padding:8px 0}.notice-inner a{font-weight:800;color:var(--navy-2)}.site-header{position:sticky;top:0;z-index:300;background:rgba(255,253,248,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(31,88,124,.03)}.header-inner{height:74px;display:flex;align-items:center;gap:26px}.brand{display:inline-flex;align-items:center;gap:10px;min-width:max-content}.brand img{width:44px;height:44px;border-radius:14px}.brand span{display:grid;line-height:1.1}.brand strong{font-size:1.2rem}.brand small{font-size:.65rem;color:var(--text-3);letter-spacing:.08em}.desktop-nav{display:flex;align-items:center;gap:4px;flex:1}.desktop-nav a{padding:8px 11px;border-radius:999px;color:var(--text-2);font-weight:700}.desktop-nav a:hover,.desktop-nav a[aria-current="page"]{background:var(--sky-soft);color:var(--navy)}.header-actions{display:flex;align-items:center;gap:6px}.icon-button,.text-button{border:0;background:transparent;padding:9px 11px;border-radius:12px;font-weight:800;cursor:pointer}.icon-button:hover,.text-button:hover{background:var(--cream-2)}.menu-toggle{display:none}.mobile-menu{border-top:1px solid var(--line);background:var(--cream-3)}.mobile-menu[hidden]{display:none!important}.mobile-menu-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:18px 0 22px}.mobile-menu-grid a{padding:10px 12px;background:white;border-radius:12px;border:1px solid var(--line)}.mobile-menu-grid a.secondary{background:var(--sky-soft)}
.search-modal{display:none;position:fixed;inset:0;z-index:1000;align-items:flex-start;justify-content:center;padding:11vh 20px;background:rgba(15,42,61,.58)}.search-modal.is-open{display:flex}.search-modal[hidden]{display:none !important}.search-dialog{position:relative;width:min(720px,100%);background:var(--surface);padding:34px;border-radius:var(--radius-large);box-shadow:0 30px 90px rgba(15,42,61,.28)}.search-close{position:absolute;right:16px;top:14px;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:white;font-size:1.6rem;cursor:pointer}.search-dialog h2{font-size:clamp(1.7rem,4vw,2.6rem);margin:6px 0 8px;line-height:1.15}.search-dialog p{color:var(--text-2);margin:0 0 20px}.search-form{display:flex;gap:10px}.search-form input{flex:1;min-width:0;border:1px solid var(--line-strong);border-radius:999px;padding:13px 18px;background:var(--bg-blue)}.quick-searches{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}.quick-searches a{padding:6px 10px;border-radius:999px;background:var(--cream)}
main{overflow:hidden}.section{padding:74px 0}.section.compact{padding:48px 0}.section.blue{background:var(--bg-blue)}.section.cream{background:var(--bg-cream)}.section.dark{background:var(--navy);color:white}.section.dark .section-head p,.section.dark .meta,.section.dark .card-body p{color:rgba(255,255,255,.72)}.section.dark .eyebrow,.section.dark .text-link{color:var(--sky)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:26px}.section-head h2{font-size:clamp(1.75rem,3vw,2.7rem);line-height:1.15;margin:6px 0 8px}.section-head p{max-width:720px;margin:0;color:var(--text-2)}.page-hero{width:min(var(--wrap),calc(100% - 40px));margin:34px auto 0;padding:46px;background:linear-gradient(135deg,var(--cream),var(--sky-soft));border:1px solid var(--line);border-radius:34px}.page-hero h1{font-size:clamp(2.5rem,6vw,5rem);line-height:.98;margin:12px 0 18px;letter-spacing:-.04em}.page-hero p{font-size:1.08rem;color:var(--text-2);max-width:680px}.page-hero img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:24px}.layout-split{display:grid;grid-template-columns:minmax(0,7fr) minmax(320px,5fr);gap:34px;align-items:center}.layout-hero{display:grid;grid-template-columns:minmax(0,7fr) minmax(360px,5fr);gap:34px}.layout-feature-four{display:grid;grid-template-columns:1.4fr repeat(2,1fr);grid-template-rows:repeat(2,1fr);gap:18px}.layout-feature-four>*:first-child{grid-row:1/3}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.grid-5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.bento{display:grid;grid-template-columns:1.35fr .8fr .8fr;grid-auto-rows:minmax(180px,auto);gap:18px}.bento>*:first-child{grid-row:span 2}.split-list{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}.stack{display:grid;gap:16px}.rail-wrap{position:relative}.rail{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,32%);gap:18px;overflow-x:auto;scroll-snap-type:x proximity;padding:2px 2px 14px;scrollbar-width:thin}.rail>*{scroll-snap-align:start}.rail-controls{display:flex;gap:8px;justify-content:flex-end;margin:-12px 0 14px}.rail-controls button{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:white;cursor:pointer}.chip-row{display:flex;flex-wrap:wrap;gap:10px}.chip-row a,.chip-row span{display:inline-flex;padding:8px 13px;border-radius:999px;background:white;border:1px solid var(--line);font-weight:700;color:var(--navy-2)}
.video-card,.live-card,.topic-card,.info-card,.trend-card,.tutorial-card,.creator-card{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden}.video-card{transition:transform .22s ease,box-shadow .22s ease}.video-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.media-frame,.live-cover{position:relative;display:block;overflow:hidden;aspect-ratio:16/9;background:var(--sky-soft)}.media-frame img,.live-cover img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}.video-card:hover .media-frame img{transform:scale(1.02)}.play-icon{position:absolute;left:18px;bottom:16px;width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:rgba(255,255,255,.9);color:var(--navy);box-shadow:var(--shadow);transition:transform .2s ease}.video-card:hover .play-icon{transform:scale(1.05)}.duration{position:absolute;right:12px;bottom:12px;background:rgba(15,42,61,.82);color:white;padding:3px 8px;border-radius:8px;font-size:.78rem}.card-body{padding:18px}.card-body h3{font-size:1.08rem;line-height:1.35;margin:10px 0 8px}.card-body p{margin:0;color:var(--text-2);font-size:.92rem}.meta{display:flex;justify-content:space-between;gap:12px;margin-top:14px;color:var(--text-3);font-size:.78rem}.live-card{background:linear-gradient(180deg,#fff,var(--accent-soft))}.live-badge{position:absolute;left:12px;top:12px;padding:5px 9px;border-radius:999px;background:var(--accent);color:white;font-weight:900;font-size:.72rem;letter-spacing:.08em}.anchor-card{display:flex;gap:16px;align-items:center;padding:18px;border-bottom:1px solid var(--line)}.anchor-card>img{width:88px;height:88px;object-fit:cover;border-radius:50%;border:4px solid var(--sky-soft)}.anchor-card h3{margin:2px 0}.anchor-card strong{color:var(--primary);font-size:.85rem}.anchor-card p{margin:4px 0;color:var(--text-2);font-size:.9rem}.anchor-card small{color:var(--text-3)}.status-dot{font-size:.75rem;color:#a44c30;background:var(--accent-soft);padding:3px 7px;border-radius:999px}.topic-card{padding:20px}.topic-user{display:flex;gap:10px;align-items:center}.topic-user>div{display:grid}.topic-user small{color:var(--text-3)}.avatar-mini{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--sky-soft);font-weight:900}.topic-card h3{margin:15px 0 8px}.topic-card p{color:var(--text-2);margin:0}.info-card,.trend-card,.tutorial-card,.creator-card{padding:22px}.info-card h3,.trend-card h3,.tutorial-card h3,.creator-card h3{margin:4px 0 8px}.info-card p,.trend-card p,.tutorial-card p,.creator-card p{margin:0;color:var(--text-2)}.trend-card{display:flex;align-items:center;justify-content:space-between;gap:20px}.trend-card strong{color:var(--primary);white-space:nowrap}.rank-list{display:grid;gap:0;border-top:1px solid var(--line)}.rank-item{display:grid;grid-template-columns:54px 1fr auto;gap:16px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}.rank-number{font-size:1.4rem;font-weight:900;color:var(--primary)}.rank-item h3{margin:0;font-size:1rem}.rank-item p{margin:3px 0 0;color:var(--text-3);font-size:.82rem}.feature-note{background:var(--cream);padding:28px;border-radius:var(--radius-large);border:1px solid var(--line-warm)}.feature-note h3{font-size:1.6rem;margin:8px 0}.feature-note p{color:var(--text-2)}.immersive{background:var(--navy);color:white;border-radius:var(--radius-large);overflow:hidden}.immersive img{width:100%;height:100%;object-fit:cover;min-height:300px}.immersive-copy{padding:36px}.immersive-copy p{color:rgba(255,255,255,.72)}
.faq-list{display:grid;gap:12px}.faq-list>h2{font-size:2rem}.faq-item{border:1px solid var(--line);background:white;border-radius:16px;overflow:hidden}.faq-question{width:100%;display:flex;justify-content:space-between;gap:18px;padding:18px 20px;border:0;background:white;text-align:left;font-weight:800;cursor:pointer}.faq-answer{padding:0 20px 18px;color:var(--text-2)}.faq-answer[hidden]{display:none}.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}.tabs button{border:1px solid var(--line);background:white;border-radius:999px;padding:8px 14px;cursor:pointer}.tabs button[aria-selected="true"]{background:var(--primary);color:white;border-color:var(--primary)}.empty-state{padding:42px;border:1px dashed var(--line-strong);border-radius:var(--radius-large);text-align:center;background:var(--surface-blue)}
.site-footer{background:var(--navy);color:white;padding:66px 0 90px;margin-top:70px}.footer-grid{display:grid;grid-template-columns:1.45fr repeat(4,1fr);gap:34px}.footer-grid h2{font-size:1rem;margin:0 0 14px}.footer-grid>div:not(:first-child){display:grid;align-content:start;gap:9px}.footer-grid a{color:rgba(255,255,255,.76)}.footer-brand p{color:rgba(255,255,255,.66);max-width:420px}.brand.inverted small{color:rgba(255,255,255,.6)}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:rgba(255,255,255,.5);font-size:.82rem}.mobile-bottom-nav{display:none}.back-to-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;border:0;background:var(--navy);color:white;opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s;z-index:250}.back-to-top.visible{opacity:1;pointer-events:auto;transform:none}
@media (max-width:1050px){.desktop-nav{display:none}.menu-toggle{display:inline-flex}.layout-hero,.layout-split{grid-template-columns:1fr}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-5{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}.layout-feature-four{grid-template-columns:1fr 1fr}.layout-feature-four>*:first-child{grid-column:1/3;grid-row:auto}.bento{grid-template-columns:1fr 1fr}.bento>*:first-child{grid-column:1/3;grid-row:auto}.rail{grid-auto-columns:minmax(280px,48%)}}
@media (max-width:720px){.wrap{width:min(100% - 28px,var(--wrap))}.site-notice{display:none}.header-inner{height:64px;gap:10px}.brand img{width:38px;height:38px}.brand small,.action-label,.text-button{display:none}.header-actions{margin-left:auto}.mobile-menu-grid{grid-template-columns:repeat(2,1fr)}.search-modal{padding:7vh 14px}.search-dialog{padding:28px 20px}.search-form{flex-direction:column}.section{padding:52px 0}.section-head{align-items:flex-start;flex-direction:column;gap:12px}.page-hero{width:calc(100% - 28px);padding:28px 20px;border-radius:24px}.page-hero h1{font-size:clamp(2.3rem,12vw,3.8rem)}.grid-3,.grid-4,.grid-5{grid-template-columns:1fr 1fr}.grid-2,.split-list{grid-template-columns:1fr}.rail{grid-auto-columns:82%}.bento{grid-template-columns:1fr}.bento>*:first-child{grid-column:auto}.rank-item{grid-template-columns:42px 1fr}.rank-item>span:last-child{display:none}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/3}.footer-bottom{flex-direction:column}.mobile-bottom-nav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:8px;right:8px;bottom:8px;z-index:280;background:rgba(255,253,248,.96);backdrop-filter:blur(16px);border:1px solid var(--line);box-shadow:var(--shadow-hover);border-radius:18px;padding:7px}.mobile-bottom-nav a{display:grid;place-items:center;font-size:.7rem;color:var(--text-2)}.mobile-bottom-nav span{font-size:1rem}.back-to-top{bottom:86px}.site-footer{padding-bottom:120px}}
@media (max-width:480px){.grid-3,.grid-4,.grid-5{grid-template-columns:1fr}.grid-4.compact-mobile{grid-template-columns:1fr 1fr}.anchor-card{align-items:flex-start}.anchor-card>img{width:68px;height:68px}.rail{grid-auto-columns:88%}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}