*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--blue:#0066CC;--blue-dark:#004C99;--blue-light:#E8F2FC;--navy:#0A2540;--white:#FFF;--gray:#64748B;--gray-bg:#F7FAFC;--radius:12px;--shadow:0 4px 24px rgba(0,102,204,.1)}
body{font-family:'Noto Sans SC',system-ui,sans-serif;color:var(--navy);line-height:1.65;background:var(--white)}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}

.wave-header{background:linear-gradient(160deg,var(--navy) 0%,var(--blue) 100%);color:var(--white);position:relative;overflow:hidden}
.wave-header::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:80px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80'%3E%3Cpath fill='%23fff' d='M0,40 C360,80 720,0 1080,40 C1260,60 1380,50 1440,40 L1440,80 L0,80Z'/%3E%3C/svg%3E") no-repeat bottom/cover}

.topnav{display:flex;align-items:center;justify-content:space-between;padding:18px 0;position:relative;z-index:2}
.topnav .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem}
.topnav .logo img{height:32px}
.topnav ul{display:flex;list-style:none;gap:8px}
.topnav a{padding:8px 16px;font-size:.9rem;font-weight:600;color:rgba(255,255,255,.8);border-radius:6px}
.topnav a:hover,.topnav a.active{color:var(--white);background:rgba(255,255,255,.12)}
.topnav .dl-btn{background:var(--white)!important;color:var(--blue)!important;font-weight:700}
.nav-toggle{display:none;background:none;border:none;color:var(--white);font-size:1.4rem;cursor:pointer}

.hero{padding:60px 0 100px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:900;line-height:1.2;margin-bottom:16px}
.hero p{font-size:1.05rem;opacity:.88;margin-bottom:28px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:8px;font-weight:700;font-size:.92rem;border:none;cursor:pointer;transition:.2s}
.btn-primary{background:var(--white);color:var(--blue)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.15)}
.btn-outline{background:transparent;border:2px solid rgba(255,255,255,.4);color:var(--white)}
.btn-outline:hover{border-color:var(--white)}
.hero-visual{background:rgba(255,255,255,.1);border-radius:16px;padding:28px;backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15)}
.demo-translate{background:var(--white);color:var(--navy);border-radius:10px;padding:20px;margin-top:16px;font-size:.9rem}
.demo-translate .from{color:var(--gray);border-bottom:1px solid #eee;padding-bottom:12px;margin-bottom:12px}
.demo-translate .to{color:var(--blue);font-weight:600}

.section{padding:72px 0}
.section-gray{background:var(--gray-bg)}
.sec-head{text-align:center;margin-bottom:44px}
.sec-head h2{font-size:1.6rem;font-weight:800;color:var(--navy);margin-bottom:8px}
.sec-head p{color:var(--gray)}

.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{background:var(--white);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border:1px solid #E2E8F0;transition:transform .2s}
.feat-card:hover{transform:translateY(-4px)}
.feat-card .icon{font-size:2.2rem;margin-bottom:14px}
.feat-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.feat-card p{font-size:.88rem;color:var(--gray)}

.lang-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.lang-tag{padding:8px 18px;background:var(--blue-light);color:var(--blue);border-radius:20px;font-size:.85rem;font-weight:600}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-num{font-size:2rem;font-weight:900;color:var(--blue)}
.stat-lbl{font-size:.82rem;color:var(--gray);margin-top:4px}

.page-hero{background:var(--blue-light);padding:48px 0;text-align:center}
.page-hero h1{font-size:2rem;font-weight:900;color:var(--navy)}
.page-hero p{color:var(--gray);margin-top:8px}

.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:800px;margin:0 auto}
.dl-card{background:var(--white);border:2px solid #E2E8F0;border-radius:var(--radius);padding:32px;text-align:center;transition:.2s}
.dl-card:hover{border-color:var(--blue);box-shadow:var(--shadow)}
.dl-card .platform{font-size:2.5rem;margin-bottom:12px}
.dl-card h3{font-size:1.1rem;font-weight:800;margin-bottom:6px}
.dl-card p{font-size:.85rem;color:var(--gray);margin-bottom:18px}
.dl-card .btn-primary{background:var(--blue);color:var(--white);width:100%;justify-content:center}
.dl-note{text-align:center;margin-top:32px;padding:20px;background:var(--blue-light);border-radius:var(--radius);font-size:.88rem;color:var(--gray);max-width:800px;margin-left:auto;margin-right:auto}

.compare{width:100%;border-collapse:collapse;background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.compare th,.compare td{padding:14px 18px;text-align:center;font-size:.9rem;border-bottom:1px solid #E2E8F0}
.compare th{background:var(--navy);color:var(--white)}
.compare td:first-child{text-align:left;font-weight:600}
.compare .win{color:var(--blue);font-weight:700}

.footer{background:var(--navy);color:rgba(255,255,255,.7);padding:40px 0;text-align:center;font-size:.85rem}
.footer a{color:var(--white);margin:0 12px}
.footer a:hover{text-decoration:underline}

.use-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.use-card{background:var(--white);border-radius:var(--radius);padding:24px;border-left:4px solid var(--blue);box-shadow:var(--shadow)}
.use-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.use-card p{font-size:.88rem;color:var(--gray);line-height:1.7}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testi-card{background:var(--white);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}
.testi-card .quote{color:var(--gray);font-style:italic;margin-bottom:12px;font-size:.9rem;line-height:1.65}
.testi-card .author{font-weight:700;font-size:.85rem;color:var(--navy)}
.faq-list{max-width:760px;margin:0 auto}
.faq-item{background:var(--white);border-radius:var(--radius);margin-bottom:10px;box-shadow:var(--shadow);overflow:hidden}
.faq-q{padding:16px 20px;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-a{padding:0 20px 16px;font-size:.88rem;color:var(--gray);line-height:1.7;display:none}
.faq-item.open .faq-a{display:block}
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.step-box{padding:16px}
.step-box .sn{width:40px;height:40px;background:var(--blue);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 12px;font-size:.9rem}
.step-box h4{font-size:.9rem;font-weight:700;margin-bottom:6px}
.step-box p{font-size:.8rem;color:var(--gray)}
.plan-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:860px;margin:0 auto}
.plan-card{background:var(--white);border:2px solid #E2E8F0;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.plan-card.featured{border-color:var(--blue)}
.plan-card h3{font-size:1.1rem;font-weight:800;margin-bottom:12px;color:var(--blue)}
.plan-card li{font-size:.88rem;color:var(--gray);margin-bottom:8px;list-style:none;padding-left:16px;position:relative}
.plan-card li::before{content:'✓';position:absolute;left:0;color:var(--blue);font-weight:700}
.content-wide{max-width:860px;margin:0 auto}
.content-wide p{color:var(--gray);margin-bottom:14px;font-size:.92rem;line-height:1.75}
.ext-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ext-card{background:var(--white);border:1px solid #E2E8F0;border-radius:var(--radius);padding:20px;text-align:center}
.ext-card .eicon{font-size:1.8rem;margin-bottom:8px}
.ext-card h4{font-size:.9rem;font-weight:700;margin-bottom:4px}
.ext-card p{font-size:.78rem;color:var(--gray)}

@media(max-width:800px){.hero{grid-template-columns:1fr}.feat-grid,.stats,.testi-grid,.use-grid,.plan-grid,.steps-row,.ext-grid{grid-template-columns:1fr}.dl-grid{grid-template-columns:1fr}.topnav ul{display:none;position:absolute;top:100%;left:0;right:0;background:var(--navy);flex-direction:column;padding:12px}.topnav ul.open{display:flex}.nav-toggle{display:block}.topnav{position:relative;flex-wrap:wrap}}