*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-cream: #FAF8F2;--bg-method: #F0EDE6;--bg-fork: #FFFFFF;--bg-preview: #E8E3D8;--card-grey: #F0EDE6;--accent-gold: #D4AA60;--accent-gold-muted: rgba(212,170,96,.15);--accent-gold-border: rgba(212,170,96,.35);--text-warm-brown: #8B5E2C;--text-deep-brown: #2C1A0E;--text-muted: #6B5A40;--border: #E0D8CC;--font-serif: "Fraunces", serif;--font-sans: "Inter", sans-serif;--font-cn: "Noto Serif SC", "Songti SC", serif}body{background-color:var(--bg-cream);color:var(--text-deep-brown);font-family:var(--font-sans);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3{font-family:var(--font-serif);color:var(--text-deep-brown)}a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.btn-gold{background-color:var(--accent-gold);color:var(--text-deep-brown);padding:12px 24px;border-radius:8px;font-weight:600;display:inline-block;transition:transform .2s,box-shadow .2s;border:none;cursor:pointer;font-family:var(--font-sans);font-size:.95rem}.btn-gold:hover{transform:translateY(-2px);box-shadow:0 4px 16px #d4aa6073}.btn-ghost{background:transparent;color:var(--text-deep-brown);padding:11px 22px;border-radius:8px;font-weight:500;display:inline-block;border:1.5px solid var(--border);cursor:pointer;font-family:var(--font-sans);font-size:.95rem;transition:border-color .2s,color .2s}.btn-ghost:hover{border-color:var(--text-warm-brown);color:var(--text-warm-brown)}header{padding:1.2rem 0;position:sticky;top:0;z-index:100;background:#faf8f2eb;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,.05)}nav{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:12px}.logo-icon{height:68px;width:auto;flex-shrink:0;display:block}.logo-text{display:flex;flex-direction:column;line-height:1}.logo-text .brand{font-family:Poppins,sans-serif;font-size:1.95rem;font-weight:700;letter-spacing:-.01em}.logo-text .brand .rudi{color:#c96a1b}.logo-text .brand .deutsch{color:#4a2a0a}.nav-links{display:flex;gap:2rem;font-weight:500;font-size:.9rem;color:var(--text-muted)}.nav-links a:hover{color:var(--text-warm-brown)}.nav-burger,.mobile-nav-drawer{display:none}body:not(.lang-cn) [data-lang=cn]{display:none}body.lang-cn [data-lang=de]{display:none}.lang-toggle{display:flex;gap:2px;background:var(--border);border-radius:20px;padding:3px}.lang-btn{background:transparent;border:none;padding:3px 10px;border-radius:16px;font-size:.75rem;font-weight:600;color:var(--text-muted);cursor:pointer;font-family:var(--font-sans);transition:all .15s}body:not(.lang-cn) .lang-btn[data-target=de],body.lang-cn .lang-btn[data-target=cn]{background:#fff;color:var(--text-deep-brown);box-shadow:0 1px 4px #0000001a}.hero{background:var(--bg-cream);display:flex;align-items:center;justify-content:space-between;padding:5rem 0 2rem;gap:3rem}.hero-content{max-width:560px}.hero h1{font-size:clamp(3rem,6vw,4.5rem);line-height:1.05;margin-bottom:.5rem;font-weight:900;letter-spacing:-.03em}.hero .chinese-sub{font-family:var(--font-cn);font-size:clamp(1.5rem,3vw,2rem);font-weight:700;color:var(--text-warm-brown);margin-bottom:1.5rem;letter-spacing:.04em}.hero p{color:var(--text-muted);font-size:1.05rem;margin-bottom:2rem;max-width:420px;line-height:1.8}.hero-ctas{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.hero-card-wrap{position:relative;flex-shrink:0}.hero-card{background:var(--card-grey);border-radius:24px;padding:24px;width:340px;box-shadow:0 16px 56px #2c1a0e1f;position:relative}.hero-card img{width:100%;border-radius:16px}.badge-chip{position:absolute;background:#fff;border-radius:12px;padding:10px 14px 10px 10px;box-shadow:0 4px 20px #0000001f;display:flex;align-items:center;gap:10px;border:1px solid rgba(0,0,0,.06)}.badge-chip.top{top:-12px;right:-16px}.badge-chip.bottom{bottom:32px;left:-20px}.badge-circle{width:38px;height:38px;background:var(--text-warm-brown);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;color:#fff;flex-shrink:0}.badge-text{display:flex;flex-direction:column}.badge-text .b-main{font-size:.85rem;font-weight:700;color:var(--text-deep-brown);line-height:1.2}.badge-text .b-sub{font-size:.75rem;color:var(--text-warm-brown);font-weight:500;line-height:1.2}.combo-orb{width:38px;height:38px;background:linear-gradient(135deg,#c96a1b,#4a2a0a);border-radius:10px;display:flex;align-items:center;justify-content:center;gap:1px;font-family:var(--font-cn);font-size:.7rem;color:#fff;font-weight:700;flex-shrink:0;line-height:1}.combo-orb span:nth-child(2){font-size:.55rem;opacity:.7}.section-padding{padding:5rem 0}.section-header{font-size:clamp(2rem,4vw,3rem);margin-bottom:3rem;line-height:1.2}.section-label{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--text-warm-brown);display:block;margin-bottom:10px}.fork-section{background:var(--bg-fork);padding:5rem 0}.fork-demo{max-width:600px;margin:0 auto 2.5rem;background:var(--card-grey);border-radius:20px;overflow:hidden;border:1px solid var(--border);box-shadow:0 4px 24px #2c1a0e0f}.fork-row{padding:24px 32px}.fork-row+.fork-row{border-top:1px dashed var(--border)}.fork-row-label{font-size:.67rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:12px;display:block}.fork-path{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.fork-word{font-family:var(--font-serif);font-size:1.7rem;font-weight:600;color:var(--text-deep-brown);min-width:72px}.fork-word.cn{font-family:var(--font-cn)}.fork-arrow{display:flex;align-items:center;gap:4px;flex:1;min-width:48px}.fork-line{flex:1;height:2px;background:var(--accent-gold)}.fork-tip{color:var(--accent-gold);font-size:1.1rem}.fork-result{font-family:var(--font-cn);font-size:1.7rem;font-weight:700;color:var(--text-warm-brown)}.fork-ok{font-size:.72rem;font-weight:700;color:var(--text-warm-brown);background:var(--accent-gold-muted);border:1px solid var(--accent-gold-border);padding:2px 10px;border-radius:999px;margin-left:auto;white-space:nowrap}.fork-branches{display:flex;flex-direction:column;gap:8px;flex:1;padding-left:16px;border-left:2.5px solid var(--text-warm-brown);min-width:150px}.fork-branch{font-size:1rem;color:var(--text-muted);display:flex;align-items:center;gap:6px;position:relative;padding:2px 0}.fork-branch:before{content:"";position:absolute;left:-18px;top:50%;width:14px;height:2px;background:var(--text-warm-brown)}.fork-branch strong{font-family:var(--font-serif);font-weight:700;color:var(--text-warm-brown);font-size:1.05rem}.fork-q{color:#c0a080}.fork-note{font-size:.8rem;color:var(--text-muted);margin:10px 0 0;font-style:italic}.fork-stat{text-align:center;max-width:560px;margin:0 auto;background:var(--card-grey);border-radius:20px;padding:2rem 2.5rem;border:1px solid var(--border)}.fork-stat strong{font-family:var(--font-serif);font-size:2rem;color:var(--text-warm-brown);display:block;margin-bottom:8px}.fork-stat p{color:var(--text-muted);font-size:.95rem;line-height:1.7}.method-section{background:var(--bg-method);padding:5rem 0}.method-rows{display:flex;flex-direction:column;gap:4rem;margin-top:1rem}.method-row{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}@media (max-width: 700px){.method-row{grid-template-columns:1fr;gap:2rem}}.method-row.flip .method-visual{order:2}.method-row.flip .method-body{order:1}@media (max-width: 700px){.method-row.flip .method-visual,.method-row.flip .method-body{order:unset}}.method-visual{display:flex;align-items:center;justify-content:center;padding:1rem 0}.method-img{width:100%;max-width:300px;height:auto;border-radius:16px;filter:drop-shadow(0 8px 24px rgba(44,26,14,.12))}.method-body h3{font-size:clamp(1.5rem,2.5vw,2rem);font-weight:700;margin-bottom:14px;line-height:1.15;letter-spacing:-.02em}.method-body p{color:var(--text-muted);font-size:.97rem;line-height:1.85;max-width:420px}.method-badge{display:inline-block;background:var(--accent-gold-muted);border:1px solid var(--accent-gold-border);color:var(--text-warm-brown);font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:3px 12px;border-radius:999px;margin-bottom:14px}.kurse-section{background:var(--bg-method);padding:5rem 0}.kurse-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem}.kurs-card{background:var(--bg-cream);border-radius:24px;padding:2rem;box-shadow:0 4px 10px #00000008;display:flex;flex-direction:column;gap:14px;transition:transform .2s,box-shadow .2s;border:1px solid rgba(0,0,0,.04)}.kurs-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px #2c1a0e1a}.kurs-level{width:48px;height:48px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:800;color:#fff;letter-spacing:.03em}.kurs-card h4{font-family:var(--font-sans);font-size:1.15rem;font-weight:700}.kurs-cn{font-family:var(--font-cn);font-size:.9rem;color:var(--text-warm-brown);margin-top:-6px}.kurs-desc{font-size:.87rem;color:var(--text-muted);line-height:1.65}.kurs-items{display:flex;flex-direction:column;gap:6px}.kurs-item{display:flex;align-items:center;gap:8px;font-size:.83rem;color:var(--text-muted)}.kurs-dot{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--text-warm-brown);display:flex;align-items:center;justify-content:center;font-size:.52rem;color:var(--text-warm-brown);flex-shrink:0}.kurs-btn{display:block;width:100%;padding:10px;background:transparent;border:1.5px solid var(--border);border-radius:8px;font-size:.87rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all .2s;text-align:center;font-family:var(--font-sans);margin-top:auto}.kurs-btn:hover{border-color:var(--text-warm-brown);color:var(--text-warm-brown)}.preview-section{background:var(--bg-preview);padding:5rem 0}.phones-row{display:flex;justify-content:center;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-top:1rem}.phone-wrap{position:relative;padding-bottom:36px}.phone-wrap.featured{transform:translateY(-16px)}.phone{width:200px;height:400px;background:#1a1410;border-radius:36px;box-shadow:0 24px 64px #00000038;padding:10px;display:flex;flex-direction:column}.phone-notch{width:64px;height:6px;background:#1a1410;border-radius:999px;margin:0 auto 8px;flex-shrink:0}.phone-screen{flex:1;background:var(--bg-cream);border-radius:28px;overflow:hidden;display:flex;flex-direction:column}.phone-bar{padding:10px 12px 6px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}.phone-bar-title{font-family:var(--font-serif);font-size:.82rem;font-weight:700;color:var(--text-deep-brown)}.phone-bar-sub{font-size:.58rem;color:var(--text-muted)}.phone-bar-badge{font-size:.58rem;font-weight:700;background:var(--accent-gold-muted);border:1px solid var(--accent-gold-border);color:var(--text-warm-brown);padding:2px 7px;border-radius:999px}.phone-body{flex:1;padding:10px;display:flex;flex-direction:column;gap:7px}.phone-card-inner{background:#fff;border-radius:14px;border:1px solid var(--border);padding:14px 12px;text-align:center}.pc-tag{display:inline-block;font-size:.54rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;background:var(--accent-gold-muted);border:1px solid var(--accent-gold-border);color:var(--text-warm-brown);padding:2px 7px;border-radius:999px;margin-bottom:7px}.pc-de{font-family:var(--font-serif);font-size:1.3rem;font-weight:700;color:var(--text-deep-brown);margin-bottom:4px}.pc-cn{font-family:var(--font-cn);font-size:.95rem;color:var(--text-warm-brown);font-weight:600}.pc-note{font-size:.58rem;color:var(--text-muted);margin-top:6px;line-height:1.4}.phone-prog{height:3px;background:var(--border);border-radius:999px;overflow:hidden}.phone-prog-fill{height:100%;background:var(--text-warm-brown);border-radius:999px}.phone-prog-row{display:flex;justify-content:space-between;font-size:.54rem;color:var(--text-muted)}.phone-btns{display:flex;gap:6px}.phone-btn{flex:1;padding:7px 0;border-radius:8px;font-size:.62rem;font-weight:700;border:none;cursor:pointer}.p-wrong{background:#fee2e2;color:#dc2626}.p-right{background:#d1fae5;color:#059669}.phone-stats{display:grid;grid-template-columns:1fr 1fr;gap:6px}.p-stat{background:#fff;border-radius:10px;border:1px solid var(--border);padding:8px 6px;text-align:center}.p-stat-n{font-family:var(--font-serif);font-size:1.1rem;font-weight:800;color:var(--text-warm-brown);display:block}.p-stat-l{font-size:.54rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.phone-mini{background:#fff;border-radius:10px;border:1px solid var(--border);padding:8px 10px;display:flex;align-items:center;gap:8px}.p-mini-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}.p-mini-label{font-size:.62rem;font-weight:600;color:var(--text-deep-brown)}.p-mini-val{font-size:.56rem;color:var(--text-muted);display:block}.phone-label{position:absolute;bottom:10px;left:50%;transform:translate(-50%);font-size:.78rem;font-weight:600;color:var(--text-muted);white-space:nowrap}.phone-choice{background:#fff;border-radius:10px;border:1px solid var(--border);padding:7px 10px;font-size:.68rem;font-weight:600;color:var(--text-muted)}.phone-choice.correct{background:#d1fae5;border-color:#059669;color:#059669}.pages-section{background:var(--bg-cream);padding:5rem 0}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.content-card{background-color:var(--card-grey);border-radius:24px;padding:2rem;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 10px #00000008;display:flex;flex-direction:column;justify-content:space-between;min-height:200px;border:1px solid rgba(0,0,0,.03)}.content-card:hover{transform:translateY(-5px) rotate(.8deg);box-shadow:0 12px 32px #2c1a0e14}.content-card h4{font-family:var(--font-sans);font-size:1.35rem;font-weight:700;margin-bottom:4px}.content-card .chinese-title{font-family:var(--font-cn);color:var(--text-warm-brown);font-size:1.1rem;font-weight:600;margin-bottom:1rem}.tag-badges{display:flex;gap:.5rem;margin-top:auto;flex-wrap:wrap}.badge{background-color:var(--text-warm-brown);color:var(--bg-cream);padding:4px 12px;border-radius:20px;font-size:.78rem;font-weight:600}.footer-cta{background-color:var(--text-deep-brown);color:var(--bg-cream);padding:6rem 0}.footer-cta .inner{display:flex;align-items:center;justify-content:space-between;gap:3rem;flex-wrap:wrap}.footer-cta h2{font-family:var(--font-serif);color:var(--bg-cream);font-size:clamp(2rem,4vw,3.2rem);max-width:560px;margin-bottom:2rem;line-height:1.15;letter-spacing:-.02em}.footer-cta p{color:#faf8f28c;font-size:.95rem;margin-bottom:2rem;max-width:400px;line-height:1.75}.cta-login{display:block;margin-top:12px;font-size:.83rem;color:#faf8f266}.cta-login a{color:#faf8f299;text-decoration:underline}.footer-cta .hero-image{background:var(--text-deep-brown);border-radius:16px;padding:8px}.footer-cta .hero-image img{max-width:280px;display:block;filter:drop-shadow(0 12px 32px rgba(0,0,0,.45))}.site-footer{background:var(--text-deep-brown);color:#faf8f2c7;padding:4rem 0 2.5rem;font-size:.92rem;line-height:1.7}.site-footer a{color:#faf8f2c7;border-bottom:1px dotted rgba(250,248,242,.25);transition:color .15s,border-color .15s}.site-footer a:hover{color:var(--accent-gold);border-bottom-color:var(--accent-gold)}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:3rem;padding-bottom:2.5rem;border-bottom:1px solid rgba(250,248,242,.12)}@media (max-width: 760px){.footer-grid{grid-template-columns:1fr;gap:2rem}}.footer-col h4{font-family:var(--font-sans);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--accent-gold);margin-bottom:1rem}.footer-loc{margin-bottom:1.2rem}.footer-loc .loc-head{font-weight:600;color:var(--bg-cream);margin-bottom:4px}.footer-loc .loc-flag{display:inline-block;margin-right:8px;font-size:1.05rem;vertical-align:-1px}.footer-loc .loc-addr{font-size:.85rem;color:#faf8f29e;line-height:1.55}.footer-loc .loc-meta{font-size:.82rem;color:#faf8f29e;margin-top:4px}.footer-loc .loc-meta a{border-bottom:none}.footer-col ul{list-style:none;padding:0;margin:0}.footer-col li{margin-bottom:.55rem}.footer-copy{padding-top:1.5rem;font-size:.82rem;color:#faf8f280;text-align:center;line-height:1.7}@keyframes revealUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes cardIn{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}.hero-content>*{animation:revealUp .6s cubic-bezier(.25,.46,.45,.94) both}.hero-content>*:nth-child(1){animation-delay:.05s}.hero-content>*:nth-child(2){animation-delay:.1s}.hero-content>*:nth-child(3){animation-delay:.15s}.hero-content>*:nth-child(4){animation-delay:.22s}.hero-card-wrap{animation:cardIn .7s cubic-bezier(.25,.46,.45,.94) .15s both}@media (max-width: 900px){.hero{flex-direction:column;padding:3rem 0 2rem}.hero-card{width:100%;max-width:340px}}@media (max-width: 720px){.container{padding:0 1.1rem}nav{gap:10px;flex-wrap:nowrap}.logo{gap:8px}.logo-icon{height:44px}.logo-text .brand{font-size:1.35rem}.nav-links{display:none}nav>a.btn-ghost,nav>a.btn-gold{display:none}.lang-toggle{margin-left:auto;flex-shrink:0}.nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:6px;flex-shrink:0}.nav-burger span{display:block;width:22px;height:2px;background:var(--text-deep-brown);border-radius:2px}.mobile-nav-drawer{display:none;flex-direction:column;background:#faf8f2fa;border-bottom:1px solid rgba(0,0,0,.08);padding:.5rem 1rem 1rem}.mobile-nav-drawer.open{display:flex}.mobile-nav-drawer a{padding:.75rem .5rem;font-weight:500;font-size:1rem;color:var(--text-muted);border-bottom:1px solid rgba(0,0,0,.06);display:block}.mobile-nav-drawer a:last-child{border-bottom:none}}