:root{--ink:#171529;--muted:#666276;--purple:#6952d5;--purple-dark:#4932aa;--lilac:#f1edff;--line:#e7e3ef;--paper:#fff;--soft:#f7f6fa;--green:#1d9b67;--shadow:0 30px 80px rgba(52,38,111,.16)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}button{font:inherit}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;height:76px;padding:0 clamp(22px,6vw,96px);background:rgba(255,255,255,.88);border-bottom:1px solid rgba(231,227,239,.8);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:11px;font-size:1.08rem;font-weight:800;letter-spacing:-.02em}.brand img{border-radius:10px}.site-nav{display:flex;align-items:center;gap:32px;font-size:.93rem;color:#4d495b}.site-nav a{transition:.2s}.site-nav a:hover{color:var(--purple)}.nav-toggle{display:none;background:none;border:0;padding:8px}.nav-toggle span{display:block;width:23px;height:2px;margin:5px;background:var(--ink)}
.hero{min-height:calc(100vh - 76px);display:grid;grid-template-columns:minmax(0,1fr) minmax(460px,.85fr);align-items:center;gap:7vw;padding:70px clamp(22px,7vw,112px) 90px;overflow:hidden;background:radial-gradient(circle at 84% 28%,#eee9ff 0,rgba(238,233,255,0) 31%),linear-gradient(180deg,#fff 0,#fbfaff 100%)}.hero-copy{max-width:680px}.eyebrow,.section-kicker{text-transform:uppercase;letter-spacing:.18em;color:var(--purple);font-size:.76rem;font-weight:850}.hero h1{margin:16px 0 24px;font-size:clamp(3.1rem,6vw,6.7rem);line-height:.98;letter-spacing:-.065em}.hero h1 em{font-style:normal;color:var(--purple)}.hero-lead{max-width:640px;margin:0;color:var(--muted);font-size:clamp(1.06rem,1.5vw,1.3rem);line-height:1.8}.hero-actions{display:flex;gap:14px;margin-top:34px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 24px;border-radius:13px;font-weight:750}.button-primary{color:#fff;background:linear-gradient(135deg,#765fe2,#5236b7);box-shadow:0 12px 28px rgba(105,82,213,.28)}.button-quiet{background:#fff;border:1px solid var(--line)}.trust-list{display:flex;gap:28px;margin:31px 0 0;padding:0;list-style:none;color:#5c586a;font-size:.9rem}.trust-list li:before{content:"";display:inline-block;width:7px;height:7px;margin-right:9px;border-radius:50%;background:var(--green)}
.product-stage{position:relative;min-height:665px;display:grid;place-items:center}.phone-card{position:relative;z-index:2;width:min(390px,90vw);padding:18px 20px 22px;border:9px solid #211e2d;border-radius:48px;background:#f7f7fb;box-shadow:var(--shadow);transform:rotate(1.5deg)}.phone-bar{display:grid;grid-template-columns:1fr 2fr 1fr;align-items:center;padding:5px 8px 16px;font-size:.72rem}.phone-bar b{text-align:center;font-size:.85rem}.phone-bar span:last-child{justify-self:end;display:grid;place-items:center;width:27px;height:27px;border-radius:50%;color:var(--purple);background:#e9e3ff}.material-line{display:flex;justify-content:space-between;gap:12px;font-size:.71rem}.material-line span{color:var(--green)}.progress{height:5px;margin:9px 0;border-radius:5px;background:#dedce4;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,#7667e8,#7c42aa)}.step{text-align:center;margin:8px 0;color:#9994a3;font-size:.7rem}.word-card{padding:21px 18px 18px;border:1px solid #eeecf3;border-radius:25px;background:#fff;box-shadow:0 12px 28px rgba(55,43,92,.07)}.word-card h2{margin:0;text-align:center;font-size:2.25rem;letter-spacing:-.04em}.level{float:right;margin:9px 0 0;padding:3px 8px;border-radius:10px;color:var(--purple);background:#f3eaff;font-size:.64rem;font-weight:700}.sounds{display:flex;justify-content:center;gap:8px;margin:12px 0 17px}.sounds span{padding:5px 9px;border-radius:12px;color:#6656ac;background:#eee9fc;font-size:.65rem}.definition,.formation,.example{padding:12px 0;border-top:1px solid #eeecf3}.word-card small{display:block;color:#9b96a6;font-size:.65rem}.word-card p{margin:3px 0;font-size:.77rem;line-height:1.5}.formation strong{color:var(--purple)}.example p{font-style:italic}.example mark{padding:0 2px;color:#713fe2;background:#fff0a8;font-weight:800}.example span{color:#888292;font-size:.67rem}.card-actions{display:grid;grid-template-columns:1fr 1.6fr;gap:9px;margin-top:14px}.card-actions button{height:38px;border:1px solid var(--purple);border-radius:12px;color:var(--purple);background:#fff;font-size:.72rem;font-weight:750}.card-actions button:last-child{color:#fff;background:var(--purple)}.orbit{position:absolute;border:1px solid rgba(105,82,213,.16);border-radius:50%}.orbit-one{width:560px;height:560px}.orbit-two{width:730px;height:730px}.memory-chip,.review-chip{position:absolute;z-index:3;padding:13px 16px;border:1px solid rgba(255,255,255,.72);border-radius:18px;background:rgba(255,255,255,.88);box-shadow:0 16px 40px rgba(55,43,92,.15);backdrop-filter:blur(10px)}.memory-chip{top:15%;right:-2%;display:flex;align-items:center;gap:11px}.memory-chip b{color:var(--purple);font-size:1.35rem}.memory-chip span,.review-chip span{color:var(--muted);font-size:.7rem}.review-chip{bottom:13%;left:-4%;display:flex;flex-direction:column}.review-chip b{font-size:.87rem}
.statement,.feature-section,.memory-section,.ios-section{padding:110px clamp(22px,7vw,112px)}.statement{text-align:center}.statement h2,.feature-heading h2,.memory-copy h2,.ios-section h2{margin:12px 0 22px;font-size:clamp(2.2rem,4.3vw,4.6rem);line-height:1.08;letter-spacing:-.05em}.section-intro{max-width:760px;margin:0 auto;color:var(--muted);font-size:1.08rem}.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:58px;text-align:left}.method-grid article{padding:32px;border-top:3px solid var(--purple);background:var(--soft)}.method-grid span{color:#9d90d5;font-size:.8rem;font-weight:800}.method-grid h3{margin:35px 0 10px;font-size:1.35rem}.method-grid p,.feature p,.memory-copy>p,.ios-section p{margin:0;color:var(--muted)}
.feature-section{background:#171529;color:#fff}.feature-heading{display:grid;grid-template-columns:1.6fr .8fr;gap:8vw;align-items:end}.feature-heading h2{max-width:760px}.feature-heading>p{padding-bottom:10px;color:#b8b3c8}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:62px}.feature{min-height:280px;padding:34px;border:1px solid #353044;border-radius:24px;background:#211e2d}.feature-wide{grid-row:span 2;min-height:578px;background:radial-gradient(circle at 65% 80%,rgba(128,103,237,.23),transparent 43%),#211e2d}.feature-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;color:#d8d0ff;background:#342c58;font-weight:850}.feature h3{max-width:540px;margin:28px 0 12px;font-size:1.55rem;line-height:1.25}.feature p{max-width:540px;color:#b8b3c8}.mini-chart{height:230px;display:flex;align-items:end;gap:9px;margin-top:60px;padding:18px;border-left:1px solid #4a4460;border-bottom:1px solid #4a4460}.mini-chart i{flex:1;border-radius:6px 6px 0 0;background:linear-gradient(180deg,#937df8,#5642b5)}.mini-chart i:nth-child(1){height:31%}.mini-chart i:nth-child(2){height:45%}.mini-chart i:nth-child(3){height:37%}.mini-chart i:nth-child(4){height:68%}.mini-chart i:nth-child(5){height:61%}.mini-chart i:nth-child(6){height:84%}.mini-chart i:nth-child(7){height:76%}
.memory-section{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:8vw;background:#f7f5fd}.memory-visual{padding:28px;border-radius:28px;background:#fff;box-shadow:0 22px 55px rgba(54,42,101,.11)}.memory-top{display:flex;justify-content:space-between}.memory-top span{font-weight:800}.memory-top b{color:var(--purple);font-size:.78rem}.memory-visual svg{width:100%;margin:25px 0 5px;overflow:visible}.memory-visual .gridline{fill:none;stroke:#eeeaf5;stroke-width:1}.memory-visual .area{fill:url(#area)}.memory-visual .curve{fill:none;stroke:#6f56d8;stroke-width:5;stroke-linecap:round}.memory-visual circle{fill:#fff;stroke:#6f56d8;stroke-width:4}.memory-summary{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}.memory-summary div{display:flex;flex-direction:column;padding:22px 10px 5px}.memory-summary div+div{border-left:1px solid var(--line);padding-left:28px}.memory-summary b{font-size:1.5rem}.memory-summary span{color:var(--muted);font-size:.75rem}.memory-copy ul{margin:28px 0 0;padding:0;list-style:none}.memory-copy li{margin:10px 0;padding-left:28px;position:relative}.memory-copy li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}
.ios-section{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:8vw}.ios-section h2{max-width:720px}.ios-status{display:flex;align-items:center;gap:18px;padding:30px;border:1px solid var(--line);border-radius:26px;box-shadow:0 20px 55px rgba(54,42,101,.09)}.ios-status img{border-radius:20px}.ios-status div{display:flex;flex:1;flex-direction:column}.ios-status b{font-size:1.08rem}.ios-status div span{color:var(--muted);font-size:.8rem}.status-pill{padding:7px 11px;border-radius:99px;color:var(--green);background:#eaf8f2;font-size:.72rem;font-weight:800}footer{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:32px;padding:34px clamp(22px,7vw,112px);border-top:1px solid var(--line);color:var(--muted);font-size:.82rem}.footer-brand{color:var(--ink)}footer p{margin:0}.copyright{white-space:nowrap}
@media(max-width:980px){.hero{grid-template-columns:1fr;padding-top:75px}.hero-copy{text-align:center;margin:auto}.hero-lead{margin:auto}.hero-actions,.trust-list{justify-content:center}.product-stage{min-height:680px}.method-grid{grid-template-columns:1fr}.feature-heading,.memory-section,.ios-section{grid-template-columns:1fr}.feature-heading{gap:10px}.memory-copy{order:-1}.feature-grid{grid-template-columns:1fr}.feature-wide{grid-row:auto;min-height:480px}.ios-status{margin-top:12px}footer{grid-template-columns:1fr;text-align:center}.footer-brand{justify-content:center}}
@media(max-width:680px){.site-header{height:66px}.site-nav{display:none;position:absolute;top:66px;left:0;right:0;flex-direction:column;gap:0;padding:8px 20px 20px;background:#fff;border-bottom:1px solid var(--line)}.site-nav.open{display:flex}.site-nav a{width:100%;padding:13px}.nav-toggle{display:block}.hero{min-height:0;grid-template-columns:1fr;padding:58px 20px 60px}.hero h1{font-size:3.05rem}.hero-lead{font-size:1rem}.hero-actions{flex-direction:column}.trust-list{flex-wrap:wrap;gap:8px 18px}.product-stage{min-height:590px;margin-top:22px}.phone-card{width:334px;padding:15px;border-width:7px;border-radius:40px}.word-card{padding:17px 14px}.memory-chip{top:8%;right:-12px}.review-chip{bottom:7%;left:-8px}.orbit-one{width:430px;height:430px}.orbit-two{display:none}.statement,.feature-section,.memory-section,.ios-section{padding:76px 20px}.statement h2,.feature-heading h2,.memory-copy h2,.ios-section h2{font-size:2.25rem}.method-grid{margin-top:38px}.method-grid article,.feature{padding:25px}.feature-grid{margin-top:38px}.feature-wide{min-height:430px}.memory-visual{padding:18px}.memory-summary b{font-size:1.18rem}.memory-summary div+div{padding-left:15px}.ios-status{align-items:flex-start;flex-wrap:wrap;padding:22px}.status-pill{margin-left:100px;margin-top:-32px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}