:root{--primary: #FF5A8D;--primary-light: #FF8FAD;--primary-dark: #E0356D;--primary-gradient: linear-gradient(135deg, #FF5A8D 0%, #FF9A8B 100%);--secondary: #9B72FF;--bg-color: #FAFAFA;--bg-pinkish: #FFF5F8;--text-main: #1D1D1F;--text-muted: #86868B;--text-inverse: #FFFFFF;--white: #FFFFFF;--border-color: rgba(0, 0, 0, .08);--shadow-sm: 0 4px 12px rgba(255, 90, 141, .08);--shadow-md: 0 12px 30px rgba(255, 90, 141, .15);--shadow-lg: 0 24px 50px rgba(0, 0, 0, .08);--shadow-card: 0 20px 40px rgba(0, 0, 0, .04);--transition-fast: .2s cubic-bezier(.25, .46, .45, .94);--transition-normal: .3s cubic-bezier(.25, .46, .45, .94);--transition-slow: .6s cubic-bezier(.16, 1, .3, 1)}html{scroll-behavior:smooth;font-size:16px;overflow-x:hidden}body{margin:0;padding:0;font-family:Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.6;overflow-x:hidden;position:relative}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.2;font-weight:700}a{text-decoration:none;color:inherit}p{margin:0}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;box-sizing:border-box}.bg-shape{position:absolute;border-radius:50%;filter:blur(80px);z-index:-1;opacity:.5}.shape-1{width:600px;height:600px;background:radial-gradient(circle,var(--primary-light) 0%,rgba(255,255,255,0) 70%);top:-100px;right:-200px}.shape-2{width:500px;height:500px;background:radial-gradient(circle,rgba(155,114,255,.3) 0%,rgba(255,255,255,0) 70%);top:300px;left:-200px}.floating-decorations{position:absolute;width:100%;height:100vh;top:0;left:0;overflow:hidden;z-index:-1;pointer-events:none}.decor-icon{position:absolute;color:var(--primary);opacity:.08;animation:float-random 10s ease-in-out infinite}.d-icon-1{top:18%;left:45%;font-size:4rem;animation-delay:0s}.d-icon-2{top:25%;left:35%;font-size:2.5rem;animation-delay:2s}.d-icon-3{top:12%;right:40%;font-size:5rem;animation-delay:1s}.d-icon-4{top:28%;right:48%;font-size:3rem;animation-delay:3s}.d-icon-5{top:15%;right:28%;font-size:3.5rem;animation-delay:4s}@keyframes float-random{0%{transform:translate(0) rotate(0) scale(1)}33%{transform:translate(20px,-25px) rotate(15deg) scale(1.05)}66%{transform:translate(-15px,20px) rotate(-10deg) scale(.95)}to{transform:translate(0) rotate(0) scale(1)}}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border-radius:50px;font-weight:600;font-size:1rem;cursor:pointer;transition:all var(--transition-normal);border:none;outline:none;gap:8px}.btn i{font-size:1.2rem}.btn:active{transform:scale(.98)}.btn-primary{background:var(--primary-gradient);color:var(--text-inverse);box-shadow:var(--shadow-md)}.btn-primary:hover{box-shadow:0 15px 35px #ff5a8d40;transform:translateY(-2px)}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background:var(--primary);color:var(--text-inverse);box-shadow:var(--shadow-sm)}.btn-white{background:var(--white);color:var(--primary);box-shadow:0 10px 25px #0000001a}.btn-white:hover{transform:translateY(-2px);box-shadow:0 15px 35px #00000026}.btn-text{background:transparent;color:var(--text-main)}.btn-text:hover{color:var(--primary)}.btn-large{padding:16px 36px;font-size:1.125rem}.btn-disabled{opacity:.5;cursor:not-allowed;pointer-events:none;background:rgba(255,255,255,.2);border:1px dashed rgba(255,255,255,.4);color:#fff9}.navbar{position:fixed;top:0;left:0;width:100%;height:80px;background:rgba(255,255,255,.8);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);z-index:1000;transition:all var(--transition-normal)}.navbar.scrolled{height:70px;box-shadow:0 4px 20px #0000000d}.nav-container{display:flex;justify-content:space-between;align-items:center;height:100%}.logo{display:flex;align-items:center;gap:12px}.logo-icon{width:40px;height:40px;background-image:url(/icon.png);background-size:cover;background-position:center;border-radius:12px;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm)}.logo-text{font-size:1.25rem;font-weight:800;color:var(--text-main);letter-spacing:-.5px}.nav-links{display:flex;gap:18px}.nav-links a{color:var(--text-main);font-weight:500;position:relative;padding:8px 0;transition:color var(--transition-fast)}.nav-links a:hover{color:var(--primary)}.nav-links a.is-active{color:var(--primary);font-weight:800}.nav-links a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width var(--transition-fast);border-radius:2px}.nav-links a:hover:after{width:100%}.nav-links a.is-active:after{width:100%}.nav-badge{position:absolute;top:-8px;right:-24px;background:#FFD700;color:#000;font-size:10px;padding:2px 6px;border-radius:10px;font-weight:800;line-height:1;transform:scale(.85);box-shadow:0 2px 4px #0000001a}.hero{padding:104px 0 72px;min-height:auto;display:flex;align-items:center}.hero-container{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;max-width:1440px;text-align:center}.hero-slogan{display:inline-flex;justify-self:center;align-items:center;justify-content:center;max-width:100%;padding:10px 22px;border-radius:999px;background:rgba(255,255,255,.86);border:1px solid rgba(255,90,141,.16);box-shadow:0 14px 34px #ff5a8d1f;color:var(--primary-dark);font-size:1.32rem;font-weight:900;line-height:1.25}.hero-content,.hero-visual{min-width:0}.hero-content{max-width:1120px;margin:0 auto;padding:0}.badge{display:inline-block;padding:8px 16px;background:var(--bg-pinkish);color:var(--primary);border-radius:20px;font-weight:600;font-size:.875rem;margin-bottom:10px;border:1px solid rgba(255,90,141,.2)}.hero-title{font-size:2rem;letter-spacing:0;margin-bottom:8px}.gradient-text{display:block;font-size:.72em;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.title-line{display:block}.hero-subtitle{font-size:1rem;color:var(--text-muted);margin:0;max-width:620px;line-height:1.62;overflow-wrap:break-word}.audience-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:18px}.audience-tags span{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:4px 12px;border-radius:999px;background:#fff;border:1px solid rgba(255,90,141,.16);box-shadow:0 8px 18px #ff5a8d14;color:#4f4f56;font-size:.86rem;font-weight:600}.audience-tags i{color:var(--primary);font-size:1rem}.hero-actions{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:16px;margin-bottom:0}.hero-actions .btn-large{padding:13px 26px;font-size:1.02rem}.hero-actions .btn-outline{padding:11px 20px}.users-proof{display:flex;align-items:center;justify-content:flex-start;gap:16px;color:var(--text-muted);font-size:.875rem;margin-top:4px;grid-column:1 / -1}.users-proof strong{color:var(--text-main)}.client-tip{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--primary);margin-top:6px;font-weight:500;opacity:.9;grid-column:1 / -1}.hero-content .alt-downloads{justify-content:flex-start!important;margin-top:8px!important}.client-tip i{font-size:16px}.web-platform{background:linear-gradient(to bottom,#fff,var(--bg-pinkish));overflow:hidden}.platform-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:50px}.platform-card{background:#fff;padding:40px;border-radius:32px;border:1px solid var(--border-color);transition:all var(--transition-normal);position:relative;overflow:hidden}.platform-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}.platform-card.is-recommended{border:2px solid var(--primary);box-shadow:var(--shadow-md)}.platform-card h3{font-size:1.5rem;margin-bottom:16px;display:flex;align-items:center;gap:12px}.platform-card ul{list-style:none;padding:0;margin:24px 0}.platform-card li{display:flex;align-items:center;gap:10px;margin-bottom:12px;color:var(--text-muted);font-size:.95rem}.platform-card li i{color:#07c160}.platform-card .rec-badge{position:absolute;top:20px;right:-30px;background:var(--primary);color:#fff;padding:4px 40px;transform:rotate(45deg);font-size:12px;font-weight:700}.avatars{display:flex}.avatar{width:32px;height:32px;border-radius:50%;border:2px solid var(--white);margin-left:-10px}.avatar:first-child{margin-left:0}.hero-visual{position:relative;perspective:1000px;width:100%;max-width:1360px;margin:0 auto}.hero-carousel{position:relative;overflow:hidden;border-radius:28px;background:radial-gradient(circle at 12% 8%,rgba(255,229,102,.45),transparent 28%),radial-gradient(circle at 88% 14%,rgba(155,114,255,.22),transparent 30%),linear-gradient(145deg,#ffffff 0%,#fff6f9 100%);border:1px solid rgba(255,90,141,.14);box-shadow:0 28px 70px #1d1d1f1f}.carousel-brand{position:absolute;top:24px;left:32px;z-index:3;display:inline-flex;align-items:center;gap:10px;min-height:42px;padding:6px 14px 6px 8px;border-radius:999px;background:rgba(255,255,255,.88);border:1px solid rgba(255,90,141,.14);box-shadow:0 12px 30px #1d1d1f1a;color:var(--text-main);font-size:.92rem;font-weight:800;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.carousel-brand .logo-icon{width:30px;height:30px;border-radius:9px}.carousel-track{display:flex;width:100%;transition:transform .55s cubic-bezier(.16,1,.3,1)}.carousel-slide{position:relative;min-width:100%;display:grid;grid-template-columns:minmax(320px,.82fr) minmax(0,1.42fr);align-items:center;gap:42px;min-height:548px;padding:70px 64px 48px;box-sizing:border-box}.carousel-slide-link{color:inherit;text-decoration:none}.carousel-slide-link:focus-visible{outline:3px solid rgba(179,47,40,.72);outline-offset:-5px}.is-history-slide{background:#fffaf3}.is-history-slide .slide-copy h2{color:#4d1714;font-size:2.85rem}.is-history-slide .slide-copy strong{color:#9d2f28}.is-history-slide .slide-copy p{color:#574743;font-weight:600}.history-slide-media{background:#2b0b08;border-color:#7d2b203d;box-shadow:0 22px 50px #46161033;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.is-history-slide:hover .history-slide-media{transform:translateY(-3px);box-shadow:0 28px 58px #46161042}.history-slide-media .hero-image{background:#2b0b08}.slide-link-cta{display:inline-flex;align-items:center;gap:8px;min-height:48px;margin-top:8px;padding:13px 22px;border-radius:999px;background:#9d2f28;color:#fff;font-size:.98rem;font-weight:800;box-shadow:0 10px 22px #7d2b203d}.slide-copy{position:relative;z-index:2;display:grid;gap:14px;justify-items:start;text-align:left;max-width:470px;padding:0}.slide-kicker{display:inline-flex;align-items:center;width:fit-content;min-height:28px;padding:4px 12px;border-radius:999px;background:rgba(255,90,141,.1);color:var(--primary-dark);font-size:.82rem;font-weight:800}.slide-copy h2{font-size:2.5rem;letter-spacing:0;line-height:1.12}.slide-copy strong{display:block;color:var(--primary);font-size:1.34rem;line-height:1.35}.slide-copy p{color:var(--text-muted);line-height:1.72;font-size:1rem;max-width:430px}.is-cover-slide .slide-copy h2{font-size:3.35rem}.is-ppt-slide{overflow:hidden}.is-ppt-slide:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 74% 70%,rgba(255,128,116,.26),transparent 31%),radial-gradient(circle at 24% 18%,rgba(255,226,145,.38),transparent 26%),linear-gradient(115deg,rgba(255,255,247,.92),rgba(255,240,229,.74));z-index:0}.is-ppt-slide .slide-copy h2{font-size:3rem}.is-ppt-slide .slide-copy p{color:#5f5b61;font-weight:600}.slide-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}.slide-tags span{display:inline-flex;align-items:center;gap:6px;min-height:32px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.76);border:1px solid rgba(255,90,141,.14);color:#4f4f56;box-shadow:0 8px 18px #ff5a8d14;font-size:.86rem;font-weight:700}.slide-tags i{color:var(--primary)}.slide-actions{display:flex;align-items:center;margin-top:8px}.slide-actions .btn{min-height:48px;padding:13px 22px;border-radius:999px;box-sizing:border-box;font-size:.98rem;white-space:nowrap}.ppt-visual{position:relative;z-index:1;min-height:470px;min-width:0}.laptop-mockup{position:absolute;top:42px;right:48px;width:min(660px,78%);transform:rotate(5deg);transform-origin:center;filter:drop-shadow(0 34px 34px rgba(211,104,89,.25))}.laptop-screen{position:relative;padding:18px;border-radius:24px 24px 14px 14px;background:linear-gradient(135deg,#6b4a3f,#2d2424);border:6px solid #7b5a50}.laptop-screen:before{content:"";position:absolute;top:8px;left:50%;width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.55);transform:translate(-50%)}.laptop-screen img{display:block;width:100%;aspect-ratio:16 / 9;object-fit:cover;border-radius:12px;background:#fff}.laptop-base{position:relative;width:108%;height:54px;margin:-3px auto 0;border-radius:0 0 34px 34px;background:linear-gradient(180deg,#fff3eb 0%,#ead1c5 48%,#b88977 100%);transform:translate(-4%);box-shadow:inset 0 1px #ffffffd1}.laptop-base:after{content:"";position:absolute;top:8px;left:50%;width:92px;height:10px;border-radius:0 0 12px 12px;background:rgba(154,104,88,.32);transform:translate(-50%)}.version-pill{position:absolute;z-index:2;min-width:86px;padding:10px 18px;border-radius:999px;color:#fff;font-weight:900;text-align:center;box-shadow:0 16px 28px #ff697838}.version-renyin{left:18px;bottom:118px;background:linear-gradient(135deg,#ff77a5,#bf73ff)}.version-xiangyi{left:56px;bottom:30px;background:linear-gradient(135deg,#ffb84d,#9f72ff)}.version-huacheng{right:48px;bottom:24px;background:linear-gradient(135deg,#ffd16f,#5da7ff)}.ppt-note,.ppt-card{position:absolute;z-index:1;color:#ff787894;filter:drop-shadow(0 10px 14px rgba(255,128,128,.16))}.ppt-note{font-size:4.8rem}.note-a{top:12px;right:8px;transform:rotate(18deg)}.note-b{top:62px;left:120px;color:#f7a05494;transform:rotate(-14deg)}.ppt-card{display:inline-flex;align-items:center;justify-content:center;width:72px;height:72px;border-radius:18px;background:rgba(255,255,255,.68);border:1px solid rgba(255,156,139,.2);font-size:2.3rem}.ppt-card-a{top:0;left:230px;transform:rotate(-9deg)}.ppt-card-b{right:14px;top:164px;transform:rotate(11deg);color:#56a3ff94}.book-stack{position:absolute;right:38px;bottom:78px;z-index:1;width:156px;height:74px}.book-stack span{position:absolute;right:0;width:152px;height:32px;border-radius:7px;background:linear-gradient(90deg,#fff8f2,#ffcfc0);box-shadow:0 10px 16px #d3685924}.book-stack span:first-child{bottom:28px;right:18px;background:linear-gradient(90deg,#fff8f2,#d9c6ff)}.book-stack span:last-child{bottom:0}.slide-media{min-width:0;padding:14px;border-radius:24px;background:linear-gradient(180deg,rgba(255,255,255,.94),rgba(255,255,255,.76));border:1px solid rgba(255,90,141,.12);box-shadow:0 22px 50px #1d1d1f1f}.carousel-slide .hero-image{aspect-ratio:16 / 9;width:100%;height:100%;object-fit:contain;object-position:center;background:#fff;box-shadow:none}.carousel-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 28px 22px}.carousel-dots{display:flex;align-items:center;justify-content:center;gap:8px}.carousel-dot,.carousel-arrow{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;cursor:pointer;transition:all var(--transition-normal)}.carousel-dot{width:9px;height:9px;padding:0;border-radius:999px;background:rgba(255,90,141,.26)}.carousel-dot.is-active{width:30px;background:var(--primary-gradient)}.carousel-arrow{width:44px;height:44px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:#fff;color:var(--primary);box-shadow:0 8px 18px #ff5a8d24}.carousel-arrow:hover{background:var(--primary);color:#fff;transform:translateY(-1px)}.carousel-arrow i{font-size:1.4rem}.image-wrapper{position:relative;border-radius:24px;background:var(--white);padding:12px;box-shadow:var(--shadow-lg);transform-style:preserve-3d}.hero-image{width:100%;height:auto;border-radius:16px;border:1px solid var(--border-color);display:block}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-15px)}to{transform:translateY(0)}}.float-animation{animation:float 6s ease-in-out infinite}.floating-card{position:absolute;background:rgba(255,255,255,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:16px 20px;border-radius:16px;box-shadow:var(--shadow-md);display:flex;align-items:center;gap:12px;border:1px solid rgba(255,255,255,.5)}.card-1{top:-20px;left:-40px;animation:float 5s ease-in-out infinite 1s}.card-2{bottom:40px;right:-30px;animation:float 7s ease-in-out infinite .5s}.icon-box{width:40px;height:40px;background:var(--bg-pinkish);color:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.25rem}.card-text{display:flex;flex-direction:column}.card-text strong{font-size:.875rem;color:var(--text-main)}.card-text span{font-size:.75rem;color:var(--text-muted)}section{padding:100px 0}.section-header{text-align:center;margin-bottom:60px}.section-header h2{font-size:2.5rem;margin-bottom:16px}.section-header .highlight{color:var(--primary)}.section-header p{font-size:1.125rem;color:var(--text-muted);max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.feature-card{background:var(--white);padding:40px 30px;border-radius:24px;box-shadow:var(--shadow-card);transition:all var(--transition-normal);border:1px solid var(--border-color)}.feature-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-md);border-color:#ff5a8d33}.feature-icon{width:60px;height:60px;background:var(--bg-pinkish);color:var(--primary);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:2rem;margin-bottom:24px;transition:all var(--transition-normal)}.feature-card:hover .feature-icon{background:var(--primary);color:var(--white);transform:scale(1.1) rotate(5deg)}.feature-card h3{font-size:1.25rem;margin-bottom:12px}.feature-card p{color:var(--text-muted);line-height:1.7}.teacher-voices{background:linear-gradient(180deg,#fff 0%,#fff7fa 100%)}.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.voice-card{min-height:230px;background:#fff;border:1px solid rgba(255,90,141,.14);border-radius:24px;padding:28px;box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:18px}.voice-icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,rgba(255,90,141,.14),rgba(155,114,255,.14));color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.25rem}.voice-card p{color:var(--text-main);font-size:1rem;line-height:1.8;flex:1}.voice-card span{color:var(--text-muted);font-size:.9rem;font-weight:700}.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}.gallery-item{border-radius:20px;overflow:hidden;background:var(--white);box-shadow:var(--shadow-card);transition:all var(--transition-normal);position:relative;border:1px solid var(--border-color)}.gallery-item.large{grid-column:span 2}.gallery-item img{width:100%;height:auto;display:block;transition:transform var(--transition-slow)}.gallery-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}.gallery-item:hover img{transform:scale(1.03)}.cta-section{padding:100px 0}.cta-container{background:var(--primary-gradient);border-radius:32px;padding:80px 40px;text-align:center;color:var(--white);box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.cta-container:before,.cta-container:after{content:"";position:absolute;width:300px;height:300px;background:rgba(255,255,255,.1);border-radius:50%}.cta-container:before{top:-100px;left:-100px}.cta-container:after{bottom:-100px;right:-100px}.cta-content{position:relative;z-index:1;max-width:700px;margin:0 auto}.cta-content h2{font-size:2.5rem;margin-bottom:20px}.cta-content 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