:root{--ink:#20243a;--muted:#6a7083;--purple:#5a58df;--blue:#537ae8;--line:#e6e9f2;--soft:#f8f9fd;--white:#fff;--shadow:0 24px 70px rgba(40,45,93,.10)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;overflow-x:hidden}button{font:inherit}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}a:focus-visible,button:focus-visible{outline:3px solid #7c7af2;outline-offset:3px}.container{width:min(1200px,calc(100% - 48px));margin:auto}
    .nav{position:fixed;inset:0 0 auto;height:72px;z-index:40;border-bottom:1px solid rgba(230,233,242,.86);background:rgba(255,255,255,.9);backdrop-filter:blur(18px)}.nav-inner{width:min(1200px,calc(100% - 48px));height:100%;margin:auto;display:flex;align-items:center;gap:46px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:20px;font-weight:700;white-space:nowrap}.brand img{width:32px;height:32px;object-fit:contain}.nav-links{display:flex;align-items:center;gap:34px;margin-left:auto;color:#545b6d;font-size:14px}.nav-links a:hover,.footer a:hover{color:var(--purple)}.nav-actions{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 23px;border:1px solid transparent;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:#5555df;color:#fff;box-shadow:0 12px 24px rgba(85,85,223,.22)}.btn-primary:hover{box-shadow:0 16px 32px rgba(85,85,223,.28)}.btn-secondary{border-color:#dfe2ec;background:#fff;color:#30374a}.nav .btn{min-height:40px;padding:0 17px;font-size:14px}.menu-btn{display:none;width:40px;height:40px;padding:0;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);cursor:pointer}
    .hero{position:relative;overflow:hidden;padding:140px 0 90px;background:radial-gradient(circle at 81% 19%,#e9eeff 0,transparent 34%),radial-gradient(circle at 10% 54%,#f2efff 0,transparent 30%),linear-gradient(180deg,#fff 0%,#f8f9ff 100%)}.hero:before{content:"";position:absolute;inset:auto -15% -35% 36%;height:650px;border-radius:50%;background:radial-gradient(circle,#d8d8ff 0,transparent 67%);opacity:.35;pointer-events:none}.hero-grid{position:relative;display:grid;grid-template-columns:455px minmax(0,1fr);gap:44px;align-items:center}.hero-copy{position:relative;z-index:3}.hero h1{max-width:500px;margin:0;font-size:clamp(48px,4.7vw,66px);line-height:1.12;letter-spacing:-2.5px;font-weight:750}.hero h1 em{display:block;margin-top:5px;color:var(--purple);font-style:normal}.hero-copy p{max-width:445px;margin:26px 0 0;color:#666d80;font-size:18px;line-height:1.85}.hero-actions{display:flex;gap:12px;margin-top:32px}.hero-note{margin-top:18px;color:#8a90a0;font-size:13px}.hero-note strong{font-weight:500;color:#60677c}
    .hero-visual{position:relative;min-width:0;padding:30px 0 38px 8px;isolation:isolate}.hero-glow{position:absolute;z-index:-1;width:510px;height:510px;top:-56px;right:-28px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#f8ffff,#cfd7ff 52%,#9490ec 100%);filter:blur(2px);opacity:.75;animation:float 10s ease-in-out infinite}.hero-app{position:relative;width:100%;min-height:460px;border:1px solid #e5e7f1;border-radius:24px;background:#fff;box-shadow:0 42px 90px rgba(64,69,137,.19);overflow:hidden;transform:perspective(1400px) rotateY(-4deg) rotateX(2deg)}.app-top{height:52px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid #edf0f6;background:#fff}.app-top .app-brand{display:flex;align-items:center;gap:8px;color:#282c46;font-size:14px;font-weight:700}.app-top .app-brand img{width:22px;height:22px;object-fit:contain}.app-top .top-side{color:#8c91a1;font-size:11px}.app-content{display:grid;grid-template-columns:132px 1fr;min-height:408px}.app-side{padding:23px 11px;border-right:1px solid #eef0f6;background:#f8f9fd}.app-side span{display:block;padding:10px 11px;margin-bottom:5px;border-radius:8px;color:#7c8292;font-size:11px}.app-side span:first-child{background:#eaeafd;color:#5453cf;font-weight:700}.app-main{padding:25px 30px 22px;min-width:0}.app-main .app-meta{display:flex;justify-content:space-between;gap:10px;color:#989bab;font-size:11px}.app-main h3{margin:11px 0 16px;font-size:20px}.player{display:flex;align-items:center;gap:14px;padding:12px 16px;border:1px solid #eaecf4;border-radius:12px;background:#fcfcff}.play-round{display:grid;place-items:center;width:30px;height:30px;flex:none;border-radius:50%;background:#e9e9ff;color:#5b58db;font-size:12px}.wave{display:flex;align-items:center;gap:2px;height:30px;flex:1;overflow:hidden}.wave i{display:block;flex:1;max-width:3px;height:var(--h);border-radius:6px;background:#bcbcf3}.wave i:nth-child(3n){background:#6769e2}.player time{color:#7c8293;font-size:10px;white-space:nowrap}.app-columns{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:16px;margin-top:18px}.app-panel{min-width:0;padding:17px;border:1px solid #eceef5;border-radius:13px;background:#fff}.app-panel h4{margin:0 0 13px;font-size:12px}.app-panel p{margin:0;color:#5c6375;font-size:11px;line-height:1.65}.app-panel p+p{margin-top:9px}.app-panel ul{margin:0;padding-left:16px;color:#5c6375;font-size:11px;line-height:1.7}.app-panel .transcript-line{display:flex;gap:8px;margin:7px 0;font-size:10px;line-height:1.5}.transcript-line time{color:#7777dc}.transcript-line b{color:#50586b;font-weight:600}.transcript-line span{color:#767b8b}.record-device{position:absolute;z-index:3;right:-26px;bottom:0;width:270px;padding:20px 21px 17px;border:1px solid rgba(224,226,242,.9);border-radius:22px;background:rgba(255,255,255,.95);box-shadow:0 25px 55px rgba(47,54,123,.22);backdrop-filter:blur(16px);transform:rotate(3deg);animation:device-float 6s ease-in-out infinite}.device-head{display:flex;justify-content:space-between;align-items:center}.device-head strong{font-size:14px}.device-head i{display:block;width:7px;height:7px;border-radius:50%;background:#ef6b7b;box-shadow:0 0 0 5px #ef6b7b20;animation:pulse 2s ease-in-out infinite}.device-time{display:block;margin:15px 0 10px;font-size:28px;font-weight:700;letter-spacing:1px}.device-wave{height:50px;display:flex;gap:3px;align-items:center;padding:0 4px}.device-wave i{flex:1;height:var(--h);border-radius:7px;background:linear-gradient(#8a9af6,#625ce0);animation:wave-up 1.8s ease-in-out infinite alternate;animation-delay:var(--d)}.device-foot{display:flex;justify-content:space-between;margin-top:12px;color:#7e8493;font-size:11px}.device-foot b{color:#5357ce;font-weight:600}.hero-summary{position:absolute;left:-18px;bottom:-10px;z-index:2;width:226px;padding:17px;border:1px solid #e8eafa;border-radius:16px;background:#fff;box-shadow:0 20px 45px rgba(48,54,122,.14);transform:rotate(-4deg)}.hero-summary b{display:block;font-size:12px}.hero-summary p{margin:9px 0 0;color:#6e7589;font-size:11px;line-height:1.65}@keyframes float{50%{transform:translateY(20px)}}@keyframes device-float{50%{transform:translateY(-9px) rotate(2deg)}}@keyframes pulse{50%{opacity:.45}}@keyframes wave-up{to{height:calc(var(--h) * .6)}}
    .trust{border-top:1px solid #eff0f6;border-bottom:1px solid #eff0f6;background:#fff}.trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:26px 0}.trust-item{padding:6px 30px;border-right:1px solid #e9ebf3}.trust-item:first-child{padding-left:0}.trust-item:last-child{border:0}.trust-item b{display:block;margin-bottom:5px;font-size:17px}.trust-item span{color:#858b9b;font-size:12px}
    .section{padding:100px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:36px;margin-bottom:40px}.section h2{margin:0;font-size:clamp(34px,3.8vw,48px);line-height:1.2;letter-spacing:-1.8px}.section-head p{max-width:500px;margin:0;color:var(--muted);font-size:16px;line-height:1.8}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{position:relative;min-height:255px;padding:30px;border:1px solid #e8eaf2;border-radius:20px;background:#fbfbff;transition:transform .25s,box-shadow .25s,border-color .25s}.feature-card:nth-child(2){background:#f6f9ff}.feature-card:nth-child(3){background:#f6fbfb}.feature-card:hover{transform:translateY(-5px);border-color:#cacdf0;box-shadow:var(--shadow)}.feature-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:13px;background:#e8e8ff;color:#5a58df;font-size:19px;font-weight:700}.feature-card:nth-child(2) .feature-icon{background:#e6f0ff;color:#527ce5}.feature-card:nth-child(3) .feature-icon{background:#e1f4f2;color:#328b8c}.feature-card h3{margin:25px 0 10px;font-size:23px;letter-spacing:-.5px}.feature-card p{margin:0;color:#6e7485;font-size:14px;line-height:1.8}
    .showcase{background:#f8f9fd}.showcase-wrap{display:grid;grid-template-columns:270px minmax(0,1fr);gap:22px}.showcase-tabs{display:flex;flex-direction:column;gap:11px}.showcase-tab{width:100%;padding:22px;text-align:left;border:1px solid transparent;border-radius:15px;background:transparent;color:#687083;cursor:pointer;transition:background .2s,border-color .2s}.showcase-tab b{display:block;margin-bottom:7px;color:#333b50;font-size:18px}.showcase-tab span{font-size:13px;line-height:1.65}.showcase-tab.active{border-color:#e5e7f3;background:#fff;box-shadow:0 11px 30px rgba(43,49,105,.07)}.showcase-tab.active b{color:#5655d8}.showcase-visual{min-height:470px;padding:25px;border:1px solid #e7e9f5;border-radius:24px;background:radial-gradient(circle at 80% 20%,#dcecff,transparent 35%),linear-gradient(130deg,#eff0ff,#f6fcff)}.demo-window{height:100%;min-height:420px;padding:0;overflow:hidden;border:1px solid #e9ebf2;border-radius:17px;background:#fff;box-shadow:0 26px 60px rgba(58,64,129,.16)}.demo-top{height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 21px;border-bottom:1px solid #ecedf4;color:#8c91a2;font-size:11px}.demo-top b{display:flex;align-items:center;gap:7px;color:#43495e;font-size:12px}.demo-top img{width:19px;height:19px}.demo-body{display:grid;grid-template-columns:168px minmax(0,1fr);height:calc(100% - 44px)}.demo-sidebar{padding:18px 12px;background:#f8f9fd;border-right:1px solid #edf0f6}.demo-sidebar span{display:block;margin:4px 0;padding:9px 10px;border-radius:8px;color:#818698;font-size:11px}.demo-sidebar span:nth-child(2){color:#5858d7;background:#e9eaff}.demo-main{padding:27px 30px;min-width:0}.demo-main h3{margin:0 0 7px;font-size:20px}.demo-main .demo-sub{margin:0 0 20px;color:#858b9a;font-size:12px}.demo-panel{display:none;animation:panel-in .35s ease}.demo-panel.active{display:block}.demo-card{padding:20px;border:1px solid #e8eaf2;border-radius:13px;background:#fff}.demo-card+.demo-card{margin-top:13px}.demo-card strong{display:block;margin-bottom:12px;font-size:13px}.demo-card p{margin:0;color:#656c7e;font-size:12px;line-height:1.75}.demo-card ul{margin:0;padding-left:18px;color:#656c7e;font-size:12px;line-height:1.85}.demo-card p+p{margin-top:9px}.demo-chapters{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:13px}.demo-chapters span{padding:12px;border-radius:9px;background:#f5f6ff;color:#626b80;font-size:11px;line-height:1.55}.demo-chapters b{display:block;margin-bottom:3px;color:#5d5ed7}.demo-transcript{display:flex;gap:16px;padding:15px 0;border-bottom:1px solid #eceef5;font-size:12px;line-height:1.65}.demo-transcript time{color:#6668d6}.demo-transcript b{display:block;color:#49516a}.demo-transcript span{color:#717789}.demo-translate{display:grid;grid-template-columns:1fr 1fr;gap:15px}.demo-translate article{padding:18px;border:1px solid #e9eaf3;border-radius:12px;background:#fbfcff}.demo-translate b{display:block;margin-bottom:15px;color:#5d62a6;font-size:13px}.demo-translate p{color:#626b7d;font-size:12px;line-height:1.75}@keyframes panel-in{from{opacity:.4;transform:translateY(6px)}to{opacity:1;transform:none}}
    .workflow{background:#202139;color:#fff}.workflow h2{max-width:700px}.steps{margin-top:54px}.step{display:grid;grid-template-columns:46px 240px 1fr;gap:30px;align-items:center;padding:27px 0;border-top:1px solid #41425b}.step:last-child{border-bottom:1px solid #41425b}.step-no{display:grid;place-items:center;width:38px;height:38px;border:1px solid #777899;border-radius:50%;color:#d0d0e9;font-size:13px}.step h3{margin:0;font-size:22px}.step p{margin:0;color:#b9bbcb;font-size:14px;line-height:1.75}
    .scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.scene{display:flex;flex-direction:column;min-height:150px;padding:22px;border:1px solid #e9ebf2;border-radius:18px;background:#fafaff}.scene:nth-child(2){background:#f4f8ff}.scene:nth-child(3){background:#f5fbfa}.scene h3{margin:0 0 9px;font-size:20px;line-height:1.42;letter-spacing:-.5px}.scene p{margin:0;color:#6c7283;font-size:13px;line-height:1.7}
    #scenes{padding-bottom:60px}.archive{padding-top:0}.archive-box{position:relative;overflow:hidden;min-height:260px;padding:55px 60px;border-radius:26px;background:linear-gradient(115deg,#5957d7 0%,#5b6ee2 60%,#6da8eb 100%);color:#fff}.archive-box:after{content:"";position:absolute;right:-120px;top:-130px;width:390px;height:390px;border:58px solid rgba(255,255,255,.1);border-radius:50%}.archive-box h2{max-width:650px;margin:0 0 16px}.archive-box p{max-width:690px;margin:0;color:#e9e9ff;font-size:15px;line-height:1.8}.archive-box a{display:inline-block;margin-top:22px;color:#fff;font-weight:600;font-size:14px;text-decoration:underline;text-underline-offset:5px}
    .faq{background:#f8f9fd}.faq-list{max-width:900px;margin:auto}.faq-item{border-bottom:1px solid #e2e5ee}.faq-q{display:flex;justify-content:space-between;gap:20px;width:100%;padding:23px 0;border:0;background:none;text-align:left;color:#30354a;font-size:17px;font-weight:600;cursor:pointer}.faq-q span{color:#6b6bdc;font-size:22px;line-height:1;transition:transform .2s}.faq-a{max-height:0;overflow:hidden;transition:max-height .25s}.faq-a p{margin:0;padding:0 35px 21px 0;color:#6e7587;font-size:14px;line-height:1.8}.faq-item.open .faq-a{max-height:180px}.faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta{padding:90px 24px;text-align:center;background:radial-gradient(circle at 50% 100%,#ececff,transparent 60%),#fff}.cta h2{margin:0;font-size:clamp(36px,4vw,54px);letter-spacing:-1.8px}.cta p{margin:20px 0 27px;color:#72798b;font-size:16px}.footer{padding:48px 0 24px;border-top:1px solid #eceef4}.footer-main{display:flex;justify-content:space-between;gap:40px}.footer-desc{max-width:390px;margin:17px 0 0;color:#7d8494;font-size:13px;line-height:1.7}.footer-weibot{display:inline-block;margin-top:20px}.footer-weibot img{height:36px;width:auto;max-width:min(280px,100%)}.footer-links{display:flex;gap:55px}.footer-links b{display:block;margin-bottom:13px;font-size:13px}.footer-links a{display:block;margin:10px 0;color:#7d8494;font-size:13px}.copyright{margin-top:42px;padding-top:18px;border-top:1px solid #eceef4;color:#9ba0ae;font-size:12px}
    .reveal{opacity:0;transform:translateY(20px);transition:opacity .65s,transform .65s}.reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){.hero-grid{grid-template-columns:400px 1fr;gap:25px}.hero h1{font-size:52px}.record-device{right:-6px;width:225px}.app-content{grid-template-columns:98px 1fr}.app-main{padding:23px 18px}.app-columns{gap:9px}.scene h3{font-size:19px}}
    @media(max-width:900px){.nav-links{display:none;position:absolute;top:72px;left:0;right:0;margin:0;padding:18px 24px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:18px}.nav-links.open{display:flex}.menu-btn{display:inline-block}.hero{padding:126px 0 70px}.hero-grid{grid-template-columns:1fr;gap:32px}.hero-copy{text-align:center}.hero h1,.hero-copy p{margin-left:auto;margin-right:auto}.hero-actions{justify-content:center}.hero-glow{right:10%}.hero-visual{max-width:760px;margin:auto;width:100%}.trust-inner{grid-template-columns:repeat(2,1fr);row-gap:20px}.trust-item:nth-child(2){border-right:0}.section-head{display:block}.section-head p{margin-top:20px}.showcase-wrap{grid-template-columns:1fr}.showcase-tabs{flex-direction:row;gap:8px}.showcase-tab{flex:1;padding:16px}.showcase-tab span{display:none}.scene-grid{grid-template-columns:repeat(2,1fr)}.scene:last-child{grid-column:1/-1}.step{grid-template-columns:46px 210px 1fr;gap:15px}}
    @media(min-width:651px) and (max-width:900px){.scene-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.scene:last-child{grid-column:auto}.scene{min-height:180px;padding:20px}.scene h3{font-size:18px}.scene p{font-size:12px}}
    @media(max-width:650px){.container,.nav-inner{width:calc(100% - 36px)}.nav-actions .btn{display:none}.hero{padding-top:114px;padding-bottom:62px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero-copy p{font-size:16px;line-height:1.75;margin-top:21px}.hero-actions{gap:10px}.hero-actions .btn{flex:1;min-width:0;padding:0 12px;font-size:14px}.hero-visual{padding:12px 0 48px}.hero-glow{width:320px;height:320px;right:-30px;top:-20px}.hero-app{min-height:336px;transform:none;border-radius:17px}.app-top{height:42px;padding:0 14px}.app-top .top-side{display:none}.app-content{grid-template-columns:78px 1fr;min-height:294px}.app-side{padding:12px 5px}.app-side span{padding:8px 4px;font-size:9px}.app-main{padding:13px 11px}.app-main h3{margin:7px 0 10px;font-size:13px}.app-main .app-meta{font-size:9px}.player{padding:7px;gap:5px}.play-round{width:24px;height:24px}.wave{height:22px}.player time{font-size:8px}.app-columns{grid-template-columns:1fr;margin-top:10px}.app-panel{padding:9px}.app-panel h4{margin-bottom:5px;font-size:10px}.app-panel p,.app-panel ul{font-size:9px}.app-panel:nth-child(2){display:none}.record-device{right:-6px;bottom:8px;width:176px;padding:13px;border-radius:15px}.device-head strong{font-size:11px}.device-time{margin:10px 0 6px;font-size:19px}.device-wave{height:32px}.device-foot{font-size:9px}.hero-summary{left:-8px;bottom:0;width:164px;padding:11px}.hero-summary b,.hero-summary p{font-size:9px}.trust-inner{padding:19px 0}.trust-item{padding:7px 15px}.trust-item:first-child{padding-left:0}.trust-item:nth-child(3){padding-left:0}.trust-item b{font-size:13px}.trust-item span{font-size:10px}.section{padding:76px 0}.section h2{font-size:34px;letter-spacing:-1px}.section-head{margin-bottom:30px}.section-head p{font-size:14px}.feature-grid,.scene-grid{grid-template-columns:1fr;gap:12px}.feature-card{min-height:0;padding:25px}.feature-card h3{margin-top:17px;font-size:20px}.scene{min-height:0;padding:20px}.scene h3{font-size:19px}#scenes{padding-bottom:42px}.scene:last-child{grid-column:auto}.showcase-tab{padding:12px 6px;text-align:center}.showcase-tab b{margin:0;font-size:13px}.showcase-visual{min-height:355px;padding:9px;border-radius:16px}.demo-window{min-height:335px}.demo-body{grid-template-columns:70px 1fr}.demo-sidebar{padding:8px 4px}.demo-sidebar span{padding:7px 3px;font-size:8px}.demo-main{padding:15px 11px}.demo-main h3{font-size:15px}.demo-main .demo-sub{font-size:9px;margin-bottom:10px}.demo-card{padding:10px}.demo-card strong,.demo-card p,.demo-card ul,.demo-transcript,.demo-translate p{font-size:9px}.demo-chapters{grid-template-columns:1fr;gap:4px}.demo-chapters span{padding:6px;font-size:8px}.demo-chapters span:nth-child(3){display:none}.demo-translate{gap:5px}.demo-translate article{padding:7px}.demo-translate b{font-size:9px}.step{grid-template-columns:38px 1fr;gap:12px}.step p{grid-column:2}.step h3{font-size:19px}.archive-box{min-height:0;padding:34px 26px;border-radius:20px}.archive-box p{font-size:14px}.faq-q{font-size:15px}.cta{padding:75px 18px}.cta p{font-size:14px}.footer-main{display:block}.footer-links{margin-top:25px;gap:35px}.copyright{margin-top:30px}}
    @media(max-width:650px){.nav-inner{display:grid;grid-template-columns:40px minmax(0,1fr) 40px;gap:0}.nav-inner>.brand{grid-column:2;grid-row:1;justify-self:center}.nav-inner>.nav-actions{grid-column:1;grid-row:1;justify-self:start}.nav-inner .menu-btn{display:grid;place-items:center}}
    .nav-links .ext-brand{font-weight:700}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none}*,*:before,*:after{animation:none!important;transition:none!important}}
/* ==== v4：官网交互与动效增强 ==== */

/* 1) 顶栏：乐记 logo 右侧的 WEIBOT.com */
.nav-brand{display:inline-flex;align-items:center;gap:13px}
.brand-weibot{font-size:13px;font-weight:700;letter-spacing:.2px;color:#6a7083;transition:color .22s,transform .22s}
.brand-weibot-tld{font-weight:500;color:#9aa0b0;transition:color .22s}
.brand-weibot:hover{color:var(--purple);transform:translateY(-1px)}
.brand-weibot:hover .brand-weibot-tld{color:var(--purple)}

/* 2) 首屏：文案逐字浮现 + 视觉区入场 */
.hero-visual{animation:hero-visual-in .9s cubic-bezier(.22,.7,.3,1) both}
@keyframes hero-visual-in{from{opacity:0;transform:translateY(26px) scale(.97)}to{opacity:1;transform:none}}
.hero h1 .ch{display:inline-block;opacity:0;transform:translateY(.45em) rotateX(-55deg);transform-origin:50% 100%;animation:char-in .62s cubic-bezier(.22,.75,.28,1) both;animation-delay:calc(var(--i) * 55ms);backface-visibility:hidden}
@keyframes char-in{60%{opacity:1}to{opacity:1;transform:none}}

/* 3) trust 行：每块 hover 悬浮 */
.trust-item{position:relative;transition:transform .28s cubic-bezier(.3,.7,.3,1)}
.trust-item:before{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--purple),var(--blue));transform:scaleX(0);transform-origin:left;transition:transform .34s cubic-bezier(.3,.7,.3,1)}
.trust-item:hover{transform:translateY(-4px)}
.trust-item:hover:before{transform:scaleX(1)}
.trust-item b,.trust-item span{transition:color .28s}
.trust-item:hover b{color:var(--purple)}

/* 4) feature-grid：hover 动画帧 + 卡片内容联动 */
.feature-card{overflow:hidden}
.feature-card:before{content:"";position:absolute;inset:0;border-radius:inherit;background:linear-gradient(120deg,transparent 18%,rgba(255,255,255,.9) 50%,transparent 82%);opacity:0;transform:translateX(-120%);pointer-events:none}
.feature-card:hover:before{animation:card-sheen 1s cubic-bezier(.3,.7,.3,1)}
@keyframes card-sheen{0%{opacity:.9;transform:translateX(-120%)}100%{opacity:0;transform:translateX(120%)}}
.feature-card:after{content:"";position:absolute;inset:0;border-radius:20px;border:1px solid transparent;pointer-events:none}
.feature-card:hover:after{border-color:rgba(90,88,223,.34);animation:ring-pulse 1.3s ease-out infinite}
@keyframes ring-pulse{0%{box-shadow:0 0 0 0 rgba(90,88,223,.20)}70%{box-shadow:0 0 0 13px rgba(90,88,223,0)}100%{box-shadow:0 0 0 0 rgba(90,88,223,0)}}
.feature-icon{transition:transform .3s cubic-bezier(.3,1.3,.4,1),box-shadow .3s}
.feature-card:hover .feature-icon{transform:rotate(-7deg) scale(1.1);box-shadow:0 10px 22px rgba(90,88,223,.22)}
.feature-card h3,.feature-card p{transition:transform .32s cubic-bezier(.3,.7,.3,1),color .32s}
.feature-card:hover h3{transform:translateX(4px)}
.feature-card:hover p{transform:translateX(4px);color:#545b70}

/* 5) showcase：固定高度消除 tab 抖动 + 切换过渡 */
.showcase-visual{min-height:620px}
.demo-window{height:560px;min-height:0}
.demo-main{overflow:hidden}
.showcase-tab{transition:background .3s,border-color .3s,box-shadow .3s,transform .3s,color .3s}
.showcase-tab:hover{border-color:#e5e7f3;background:#fff;transform:translateX(4px)}
.showcase-tab.active{transform:none}
.showcase-tab b,.showcase-tab span{transition:color .3s,transform .3s}
.showcase-tab:hover b{transform:translateX(2px)}
@keyframes panel-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* 6) workflow：hover 悬浮 + 右侧文字逐字出现 */
.step{position:relative;transition:background .3s}
.step:hover{background:linear-gradient(90deg,rgba(255,255,255,.075),transparent 72%)}
.step-no{transition:transform .36s cubic-bezier(.3,1.3,.4,1),background .3s,border-color .3s,color .3s,box-shadow .3s}
.step:hover .step-no{transform:translateY(-3px) rotate(-8deg) scale(1.13);background:#5a58df;border-color:#8b8af5;color:#fff;box-shadow:0 10px 24px rgba(90,88,223,.45)}
.step h3{transition:transform .34s cubic-bezier(.3,.7,.3,1),color .3s}
.step:hover h3{transform:translateX(6px)}
.step p .ch{display:inline-block;opacity:0;transform:translateY(6px);transition:opacity .34s ease,transform .34s ease;transition-delay:calc(var(--i) * 22ms)}
.step:hover p .ch,.step:focus-within p .ch{opacity:1;transform:none}
@media(hover:none){.step p .ch{opacity:1;transform:none}}

/* 7) scene-grid：卡片 hover */
.scene{position:relative;transition:transform .3s cubic-bezier(.25,.75,.3,1),box-shadow .3s,border-color .3s,background .3s}
.scene:hover{transform:translateY(-6px);border-color:#cfd3f2;background:#fff;box-shadow:0 22px 46px rgba(43,49,105,.13)}
.scene h3,.scene p{transition:transform .3s,color .3s}
.scene:hover h3{color:#4d4dd0;transform:translateX(3px)}
.scene:hover p{transform:translateX(3px);color:#5a6070}
.scene:after{content:"";position:absolute;right:20px;bottom:18px;width:26px;height:2px;border-radius:2px;background:#c9cbf0;opacity:0;transform:translateX(-8px);transition:opacity .3s,transform .3s,background .3s}
.scene:hover:after{opacity:1;transform:none;background:#6a6ae0}

/* 8) archive：背景旋转圆环 + 外扩涟漪 + 按钮化 CTA */
.archive-box{isolation:isolate}
.archive-box:after{content:none}
.archive-orbit,.archive-ripple{position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.archive-orbit{right:-120px;top:-130px;width:390px;height:390px;border:58px dashed rgba(255,255,255,.15);animation:orbit-spin 34s linear infinite}
.archive-orbit.orbit-b{left:-160px;bottom:-210px;right:auto;top:auto;width:320px;height:320px;border-width:44px;border-color:rgba(255,255,255,.11);animation-duration:26s;animation-direction:reverse}
@keyframes orbit-spin{to{transform:rotate(360deg)}}
.archive-ripple{left:50%;top:50%;width:320px;height:320px;margin:-160px 0 0 -160px;border:2px solid rgba(255,255,255,.30);opacity:0;animation:ripple-out 5.2s ease-out infinite}
.archive-ripple.ripple-b{animation-delay:1.7s}
.archive-ripple.ripple-c{animation-delay:3.4s}
@keyframes ripple-out{0%{opacity:.5;transform:scale(.45)}70%{opacity:.12}100%{opacity:0;transform:scale(1.9)}}
.archive-box>*:not(.archive-orbit):not(.archive-ripple){position:relative;z-index:2}
.archive-box a{display:inline-flex;align-items:center;gap:9px;margin-top:24px;padding:14px 26px;border-radius:12px;background:#fff;color:#5657d6;font-weight:650;font-size:14px;text-decoration:none;box-shadow:0 14px 30px rgba(24,26,72,.22);transition:transform .24s,box-shadow .24s,background .24s}
.archive-box a:hover{transform:translateY(-3px);background:#f7f7ff;box-shadow:0 20px 40px rgba(24,26,72,.3)}
.archive-box a:after{content:"→";transition:transform .24s}
.archive-box a:hover:after{transform:translateX(4px)}

/* 9) FAQ：渐入渐出 + 不挤压下一行 */
.faq-a{max-height:0;opacity:0;transform:translateY(-6px);overflow:hidden;transition:max-height .42s cubic-bezier(.4,0,.2,1),opacity .3s ease,transform .34s ease}
.faq-a.shown{opacity:1;transform:none}
.faq-a p{padding:0 35px 26px 0}
.faq-q{transition:color .25s}
.faq-q:hover{color:#4d4dd0}

/* 10) CTA：动态背景 + 鼠标跟随光斑 */
.cta{position:relative;overflow:hidden}
.cta:before,.cta:after{content:"";position:absolute;pointer-events:none}
.cta:before{left:50%;top:-44%;width:780px;height:780px;margin-left:-390px;border-radius:50%;background:conic-gradient(from 0deg,#e9e9ff,#eef7ff,#f2efff,#e9e9ff);opacity:.55;animation:cta-drift 22s linear infinite}
.cta:after{inset:0;background:radial-gradient(220px circle at var(--mx,50%) var(--my,50%),rgba(90,88,223,.17),transparent 65%);opacity:0;transition:opacity .35s}
.cta.is-hot:after{opacity:1}
@keyframes cta-drift{to{transform:rotate(360deg)}}
.cta>.reveal{position:relative;z-index:2}
.cta h2{transition:transform .4s cubic-bezier(.3,.7,.3,1)}
.cta.is-hot h2{transform:translateY(-3px)}

/* 11) footer：logo 同排 + 竖杠 + 标语 + 版权居中 */
.footer-logos{display:flex;align-items:center;gap:14px}
.footer-logo{display:inline-flex;align-items:center;gap:7px;opacity:.85;transition:opacity .25s,transform .25s}
.footer-logo:hover{opacity:1;transform:translateY(-1px)}
.footer-logo img{height:20px;width:auto}
.footer-logo-text{font-size:14px;font-weight:700;color:#3a4055}
.footer-sep{width:1px;height:16px;background:#dfe2ec}
.footer-slogan{margin:14px 0 0;color:#7d8494;font-size:13px;line-height:1.7}
.footer-weibot{display:none}
.copyright{text-align:center}

/* 小屏适配 */
@media(max-width:650px){
  .nav-brand{grid-column:2;grid-row:1;justify-self:center;gap:9px}
  .brand-weibot{font-size:11px}
  .nav-brand .brand{font-size:17px}
  .nav-brand .brand img{width:26px;height:26px}
  .showcase-visual{min-height:400px}
  .demo-window{height:auto;min-height:360px}
  .footer-logos{gap:10px}
  .footer-logo img{height:17px}
  .footer-logo-text{font-size:12px}
  .archive-ripple{width:220px;height:220px;margin:-110px 0 0 -110px}
  .cta:before{width:420px;height:420px;margin-left:-210px}
}
@media(prefers-reduced-motion:reduce){
  .hero h1 .ch,.step p .ch{opacity:1!important;transform:none!important}
  .hero-visual{opacity:1!important;transform:none!important}
  .archive-ripple{opacity:.16!important;transform:none!important}
}

/* ==== v5：footer 底部信息 ==== */
.hero-grid{position:relative;z-index:2;align-items:start}

/* footer：维步｜乐记 + 标语移到底部，版权居中 */
.footer-main{justify-content:flex-end}
.footer-bottom{display:flex;flex-direction:column;gap:12px;margin-top:40px}
.copyright{margin-top:24px;padding-top:18px;border-top:1px solid #eceef4;text-align:center}

@media(max-width:650px){
  .footer-main{justify-content:flex-start}
}
/* ==== v6：banner 呼吸动效 + 细节修正 ==== */

/* banner：沿用原来的渐变背景，只加呼吸动效（不新增任何元素） */
.hero:before{animation:hero-breathe 11s ease-in-out infinite}

@keyframes hero-breathe{0%,100%{transform:scale(1);opacity:.34}50%{transform:scale(1.12);opacity:.6}}

/* 卡片 hover 时使用 pointer 鼠标样式 */
.trust-item,.feature-card,.scene{cursor:pointer}

/* abilities 副标题一行展示，不换行 */
#abilities .section-head p{max-width:none;white-space:nowrap}
@media(max-width:1050px){#abilities .section-head p{white-space:normal}}

/* CTA：背景圆圈向外扩散的涟漪 */
.cta-ripple{position:absolute;left:50%;top:-44%;width:780px;height:780px;margin-left:-390px;border-radius:50%;border:1px solid rgba(90,88,223,.3);pointer-events:none;opacity:0;animation:cta-ripple-out 5s ease-out infinite}
.cta-ripple.r2{animation-delay:2.5s}
@keyframes cta-ripple-out{0%{opacity:.5;transform:scale(.55)}70%{opacity:.12}100%{opacity:0;transform:scale(1.4)}}
@media(max-width:650px){.cta-ripple{width:420px;height:420px;margin-left:-210px}}

/* ==== v7：对齐、首屏视频、逐次入场、页脚自媒体 ==== */

/* 1) 顶栏：乐记文字与 WEIBOT.com 坐在同一条底线上 */
.nav-brand{align-items:flex-end}
.brand{align-items:flex-end}
.brand span{line-height:1}
.brand-weibot{line-height:1;padding-bottom:1px;transform:none}
.brand-weibot:hover{transform:none}

/* 2-3) 首屏文案 + 右侧视频 */
.hero-copy .hero-kicker{margin:0 0 14px;color:var(--purple);font-size:20px;font-weight:650;letter-spacing:.08em}
.hero-copy .hero-lead{max-width:460px;margin:18px 0 0;color:#666d80;font-size:16px;line-height:1.8}
.hero-copy .hero-lead+.hero-lead{margin-top:12px}
.hero-points{display:grid;gap:0;max-width:460px;margin:22px 0 0;padding:0;list-style:none}
.hero-points li{display:grid;grid-template-columns:72px 1fr;gap:12px;align-items:baseline;padding:11px 0;border-top:1px solid #eef0f6}
.hero-points b{font-size:14px;font-weight:650;color:#30374a}
.hero-points span{color:#6a7083;font-size:13px;line-height:1.6}
.hero-actions{margin-top:26px}
.hero-visual{transform-style:preserve-3d}
.hero-app{overflow:hidden;min-height:0;transform:perspective(1400px) rotateY(-2deg) rotateX(2deg);transition:transform .45s cubic-bezier(.22,.7,.3,1)}
.hero-visual.is-tilt .hero-app{transition:transform .12s ease-out}
.app-stage{position:relative;height:420px;overflow:hidden;background:#f6f7fb}
.hero-app-video{width:100%;height:100%;object-fit:fill;object-view-box:inset(2% 0 3% 45%);display:block}
.live-dot{display:inline-block;width:7px;height:7px;margin-right:6px;border-radius:50%;background:#ef6b7b;box-shadow:0 0 0 4px #ef6b7b24;animation:pulse 1.4s ease-in-out infinite;vertical-align:middle}
.hero-summary{animation:card-pop 5.2s ease-in-out infinite}
.record-device{right:8px;animation:device-float 3.6s ease-in-out infinite}
@keyframes card-pop{0%,100%{transform:rotate(-4deg) translateY(0)}50%{transform:rotate(-2deg) translateY(-10px)}}
.wave i,.device-wave i{animation:wave-up .9s ease-in-out infinite alternate;animation-delay:var(--d,0s)}

/* 4) 板块入场：滚到视口后再按 --stagger 依次出现 */
.stagger,.reveal{opacity:0;transform:translate3d(-14px,28px,0);transition:opacity .7s cubic-bezier(.22,.7,.3,1),transform .7s cubic-bezier(.22,.7,.3,1);transition-delay:calc(var(--stagger,0)*90ms)}
main>section.in .stagger,main>section.in .reveal,.footer.in .stagger,.footer.in .reveal{opacity:1;transform:none}

/* 5) 展示区：两路应用内演示 */
.demo-media{display:flex;flex-direction:column;height:560px;min-height:0;margin:0}
.demo-stage{position:relative;flex:1;min-height:0;overflow:hidden;background:#f3f4f6}
.demo-clip{position:absolute;inset:0;opacity:0;pointer-events:none;transition:opacity .4s ease}
.demo-clip.is-on{opacity:1;pointer-events:none}

.d-detail{position:relative;height:100%;background:#fff}
.d-detail-main{height:100%;padding:14px 18px;filter:saturate(.85)}
.d-topbar{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#1f2937}
.d-topbar span{width:22px;height:22px;border-radius:7px;background:#f3f4f6;display:grid;place-items:center;color:#6b7280;font-size:16px}
.d-topbar strong{font-size:15px;font-weight:650}
.d-topbar em{margin-left:auto;font-style:normal;color:#9ca3af;font-size:12px}
.d-ct{display:grid;gap:10px;max-width:46%}
.d-ct p{margin:0;padding:10px 12px;border-radius:12px;background:#f3f4f6;font-size:12px;line-height:1.65;color:#4b5563}
.d-ct time{display:block;color:#9ca3af;font-size:11px}
.d-ct b{display:inline-block;margin:2px 0 4px;color:#1f2937}
.d-mask{position:absolute;inset:0;background:rgba(17,24,39,.28)}
.d-drawer{position:absolute;top:10px;right:10px;bottom:10px;width:min(72%,420px);display:flex;border:1px solid #e5e7eb;border-radius:16px;background:#fff;box-shadow:0 18px 44px rgba(17,24,39,.16);overflow:hidden}
.demo-clip.is-on .d-drawer,.demo-clip.is-on .d-mask,.demo-clip.is-on .d-sec,.demo-clip.is-on .d-bubble{opacity:1;transform:none}
.demo-clip.is-playing .d-drawer{animation:d-drawer-in .55s cubic-bezier(.22,.7,.3,1) both}
.demo-clip.is-playing .d-mask{animation:d-fade .35s ease both}
.d-rail{display:flex;flex-direction:column;width:88px;flex:none;padding:10px 0;border-right:1px solid #e5e7eb;background:#fafbff}
.d-rail span{padding:10px 8px 10px 12px;color:#6b7280;font-size:12px;line-height:1.35}
.d-rail .on{position:relative;color:#5555df;font-weight:650}
.d-rail .on:before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;border-radius:2px;background:linear-gradient(#14c9c9,#1677ff 50%,#8f7de3)}
.d-rp{flex:1;min-width:0;display:flex;flex-direction:column}
.d-sm-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px 8px}
.d-sm-head b{font-size:16px;color:#111}
.d-regen{padding:7px 12px;border-radius:10px;background:linear-gradient(105deg,#5555df,#5b6cff 50%,#8f7de3);color:#fff;font-size:12px;font-weight:650}
.d-disc{margin:0;padding:0 14px 8px;color:#9ca3af;font-size:11px}
.d-sm-scroll{flex:1;min-height:0;overflow:hidden;padding:0 16px 8px}
.d-sec{padding:10px 0 14px;border-bottom:1px solid rgba(156,163,175,.18)}
.demo-clip.is-playing .d-sec-sum{animation:d-pop .45s .45s both}
.demo-clip.is-playing .d-sec-dec{animation:d-pop .45s .75s both}
.demo-clip.is-playing .d-sec-todo{animation:d-pop .45s 1.05s both}
.d-sec h4{display:flex;align-items:center;gap:7px;margin:0 0 8px;font-size:14px;color:#1a1a1a}
.d-sec h4 i{width:8px;height:8px;border-radius:50%}
.d-sec-sum h4 i{background:#14c9c9}
.d-sec-dec h4 i{background:#5a58df}
.d-sec-todo h4 i{background:#00b42a}
.d-sec p,.d-sec li{margin:0;color:#4a4f57;font-size:13px;line-height:1.7}
.d-sec ul{margin:0;padding-left:16px}
.d-todos{list-style:none;padding:0}
.d-todos li{display:flex;align-items:flex-start;gap:8px;margin:0 0 8px}
.d-todos i{width:14px;height:14px;margin-top:3px;border:1.5px solid #9ca3af;border-radius:4px;flex:none}
.d-showall{margin:auto 14px 12px;padding:8px 0;border-top:1px solid #eef0f4;color:#5555df;font-size:13px;font-weight:650;text-align:center}

.d-studio{height:100%;display:flex;flex-direction:column;background:#fff}
.d-sbar{padding:10px 14px 8px;border-bottom:1px solid #e5e7eb}
.d-sbar-main{display:flex;align-items:center;gap:10px}
.d-sbar-main strong{font-size:15px;font-weight:650;color:#1f2937}
.d-live{color:#f53f3f;font-size:12px;font-weight:650}
.d-live:before{content:"";display:inline-block;width:6px;height:6px;margin-right:5px;border-radius:50%;background:#f53f3f;box-shadow:0 0 0 4px #f53f3f22;animation:pulse 1.4s ease-in-out infinite;vertical-align:middle}
.d-conn{color:#00b42a;font-size:12px}
.d-sets{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.d-sets span{padding:4px 8px;border:1px solid #d1d5db;border-radius:8px;background:#fff;color:#4b5563;font-size:11px}
.d-sets .on{border-color:#1677ff;color:#1677ff;background:#e6f4ff}
.d-sbody{flex:1;min-height:0;display:flex;flex-direction:column;padding:12px 16px}
.d-bubbles{flex:1;min-height:0;display:flex;flex-direction:column;gap:10px;overflow:hidden}
.d-bubble{padding:11px 13px;border-radius:14px;background:#f3f4f6}
.demo-clip.is-playing .d-bubble:nth-child(1){animation:d-pop .4s .3s both}
.demo-clip.is-playing .d-bubble:nth-child(2){animation:d-pop .4s 1.35s both}
.demo-clip.is-playing .d-bubble:nth-child(3){animation:d-pop .4s 2.4s both}
.d-bhd{display:flex;align-items:center;gap:7px;margin-bottom:6px}
.d-bhd i{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-style:normal;font-weight:700}
.d-bhd .a1{background:#e6fffb;color:#08979c}
.d-bhd .a2{background:#e6f4ff;color:#1677ff}
.d-bhd b{font-size:13px;color:#1f2937}
.d-bhd time{margin-left:2px;color:#9ca3af;font-size:12px}
.d-bubble p{margin:0;color:#1f2937;font-size:13px;line-height:1.65}
.d-interim{min-height:20px;margin:2px 0 0;color:#6b7280;font-size:13px;line-height:1.6}
.d-interim:empty{display:none}
.demo-clip.is-playing .d-interim:not(:empty){display:block}
.d-dock{display:flex;align-items:center;gap:10px;margin-top:10px;padding:8px 10px;border-radius:14px;background:#111827;color:#fff}
.d-dock time{min-width:64px;font-size:13px;font-variant-numeric:tabular-nums}
.d-wave{flex:1;min-width:0;height:36px;display:flex;align-items:center;gap:2px;padding:0 8px;border:1.5px solid rgba(255,255,255,.38);border-radius:10px;background:rgba(255,255,255,.06)}
.d-wave i{flex:1;max-width:3px;height:var(--h,12px);border-radius:4px;background:#93c5fd;animation:wave-up .8s ease-in-out infinite alternate;animation-delay:var(--d,0s)}
.d-acts{display:flex;gap:8px}
.d-pause,.d-stop{width:28px;height:28px;border-radius:50%;background:#374151;position:relative}
.d-pause:before,.d-pause:after{content:"";position:absolute;top:8px;width:3px;height:12px;border-radius:1px;background:#fff}
.d-pause:before{left:9px}.d-pause:after{right:9px}
.d-stop:before{content:"";position:absolute;inset:8px;border-radius:2px;background:#f53f3f}

@keyframes d-drawer-in{from{opacity:0;transform:translateX(28px)}to{opacity:1;transform:none}}
@keyframes d-fade{from{opacity:0}to{opacity:1}}
@keyframes d-pop{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

@media(max-width:900px){
  .d-ct{max-width:38%}
  .d-ct p span{display:none}
  .d-rail span:not(.on){display:none}
  .d-rail{width:64px}
  .d-sets span:nth-child(n+3){display:none}
}
@media(max-width:650px){
  .d-detail-main{padding:10px}
  .d-ct{display:none}
  .d-drawer{width:calc(100% - 16px);left:8px;right:8px}
  .d-sbar-main .d-conn,.d-sets{display:none}
  .d-bubble p{font-size:12px}
}

@media(prefers-reduced-motion:reduce){
  .d-drawer,.d-mask,.d-sec,.d-bubble{opacity:1!important;transform:none!important;animation:none!important}
  .d-live:before,.d-wave i{animation:none!important}
}

/* 6) 页脚：左侧简介 + 底部自媒体 */
.footer-main{justify-content:space-between;align-items:flex-start}
.footer-bottom{display:flex;flex-direction:column;justify-content:flex-start;align-items:flex-start;gap:32px;margin-top:0}
.footer-brand-row{display:flex;flex-direction:column;gap:12px}
.footer-slogan{margin:0}
.footer-social{display:flex;flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none}
.footer-channel{position:relative}
.footer-channel button,.footer-channel-link{display:grid;place-items:center;width:36px;height:36px;padding:0;border:0;border-radius:50%;background:#5555df;cursor:pointer;transition:transform .2s,box-shadow .2s}
.footer-channel-link{overflow:hidden}
.footer-channel button:hover,.footer-channel.open button,.footer-channel-link:hover{transform:translateY(-2px);box-shadow:0 10px 18px rgba(85,85,223,.28)}
.footer-channel button img,.footer-channel-link img{width:18px;height:18px;object-fit:contain}
.footer-channel-link img{filter:brightness(0) invert(1)}
.footer-qr{position:absolute;left:50%;bottom:calc(100% + 10px);z-index:4;display:none;width:148px;margin-left:-74px;padding:10px 10px 8px;border-radius:12px;background:#1c1e2e;color:#fff;box-shadow:0 16px 36px rgba(20,22,48,.28);text-align:center}
.footer-qr:after{content:"";position:absolute;left:50%;bottom:-5px;width:10px;height:10px;margin-left:-5px;background:#1c1e2e;transform:rotate(45deg)}
.footer-channel:hover .footer-qr,.footer-channel.open .footer-qr,.footer-channel:focus-within .footer-qr{display:block}
.footer-qr img{width:128px;height:128px;margin:0 auto;object-fit:contain;background:#fff;border-radius:8px}
.footer-qr.is-dark img{background:#111}
.footer-qr span{display:block;margin-top:6px;font-size:12px}
.footer-qr-mail{width:auto;min-width:160px;margin-left:-80px;padding:10px 14px;font-size:13px;white-space:nowrap}
.footer-channel:first-child .footer-qr-mail{left:0;margin-left:0}
.footer-channel:first-child .footer-qr-mail:after{left:18px;margin-left:0}
.footer-channel:last-child .footer-qr-mail{left:auto;right:0;margin-left:0}
.footer-channel:last-child .footer-qr-mail:after{left:auto;right:13px;margin-left:0}
.footer-qr-mail span{display:inline;margin:0}
.footer-qr-mail .footer-mail-ok{display:none}
.footer-channel-mail.copied .footer-mail-addr{display:none}
.footer-channel-mail.copied .footer-mail-ok{display:inline}

@media(max-width:1050px){.app-stage{height:360px}.demo-media{height:480px}}
@media(max-width:900px){
  .hero-copy{text-align:left}
  .hero-kicker,.hero-copy .hero-lead,.hero-points{margin-left:auto;margin-right:auto}
  .hero-app{transform:none}
  .app-stage{height:320px}
  .demo-media{height:400px}
}
@media(max-width:650px){
  .hero-points li{grid-template-columns:1fr;gap:4px}
  .app-stage{height:240px}
  .demo-media{height:280px}
  .footer-main{display:block}
  .footer-links{margin-top:28px}
  .footer-bottom{flex-direction:column;gap:22px}
  .footer-qr{left:0;margin-left:0}
}

@media(prefers-reduced-motion:reduce){
  .stagger,.reveal{opacity:1!important;transform:none!important}
  .hero-app,.hero-summary,.record-device{animation:none!important;transform:none!important}
}

/* 移动端：右侧产品画面叠进首屏文案 */
@media(max-width:900px){
  .hero{padding:88px 0 36px}
  .hero-grid{display:grid;grid-template-columns:1fr;grid-template-areas:"stack";gap:0;border-radius:22px;overflow:hidden;background:#fff;box-shadow:0 20px 48px rgba(64,69,137,.12)}
  .hero-copy,.hero-visual{grid-area:stack}
  .hero-visual{z-index:0;max-width:none;width:100%;margin:0;padding:0;pointer-events:none}
  .hero-copy{z-index:1;padding:58px 22px 26px;background:linear-gradient(180deg,rgba(255,255,255,.38) 0%,rgba(255,255,255,.78) 42%,rgba(255,255,255,.94) 100%)}
  .hero-glow,.hero-summary,.record-device{display:none}
  .hero-app{height:100%;min-height:100%;border:0;border-radius:0;box-shadow:none;transform:none;display:flex;flex-direction:column}
  .app-stage{flex:1;height:auto;min-height:0}
  .hero-visual{height:100%}
  .demo-media{height:460px}
}
@media(max-width:650px){
  .hero{padding:80px 0 28px}
  .hero-copy{padding:52px 16px 22px}
  .hero-visual{padding:0}
  .hero-app{min-height:0}
  .app-stage{height:auto}
  .demo-media{height:380px}
}