/* ===== Variables & Reset ===== */
:root {
  --primary: #165DFF;
  --primary-light: #e8f0ff;
  --primary-dark: #0e42b8;
  --green: #36D399;
  --green-light: #e6faf2;
  --green-dark: #1fb37d;
  --text: #1d2129;
  --text-secondary: #4e5969;
  --text-tertiary: #86909c;
  --bg: #ffffff;
  --bg-section: #f7f8fa;
  --bg-card: #ffffff;
  --border: #e5e6eb;
  --shadow: 0 2px 12px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.10);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --transition: all .3s ease;
  --max-width: 1200px;
  --nav-height: 72px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;border:none;transition:var(--transition);white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 4px 14px rgba(22,93,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(22,93,255,.45)}
.btn-green{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;box-shadow:0 4px 14px rgba(54,211,153,.35)}
.btn-green:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(54,211,153,.45)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 2px 8px rgba(0,0,0,.08)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.12)}
.btn-lg{padding:16px 40px;font-size:18px}
.btn-sm{padding:8px 20px;font-size:14px}

/* ===== Section ===== */
.section{padding:80px 0}
.section-alt{background:var(--bg-section)}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:36px;font-weight:700;margin-bottom:12px;background:linear-gradient(135deg,var(--primary),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.section-title p{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto}

/* ===== Navbar ===== */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-height);background:rgba(255,255,255,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid transparent;z-index:1000;transition:var(--transition)}
.navbar.scrolled{border-bottom-color:var(--border);box-shadow:0 1px 8px rgba(0,0,0,.05)}
.navbar .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--primary)}
.logo-img{width:38px;height:38px;border-radius:10px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:36px}
.nav-links a{font-size:15px;font-weight:500;color:var(--text-secondary);position:relative}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--primary);transition:var(--transition)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-cta{margin-left:12px}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.hamburger span{width:24px;height:2px;background:var(--text);transition:var(--transition)}

/* ===== Hero ===== */
.hero{padding-top:calc(var(--nav-height) + 60px);padding-bottom:80px;background:linear-gradient(160deg,#f0f5ff 0%,#e6faf2 40%,#f7f8fa 100%);position:relative;overflow:hidden;min-height:100vh;display:flex;align-items:center}
.hero::before{content:'';position:absolute;top:-200px;right:-200px;width:600px;height:600px;background:radial-gradient(circle,rgba(22,93,255,.06) 0%,transparent 70%);border-radius:50%}
.hero::after{content:'';position:absolute;bottom:-100px;left:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(54,211,153,.06) 0%,transparent 70%);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero-content{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero-text h1{font-size:48px;font-weight:800;line-height:1.3;margin-bottom:8px}
.hero-text h1 .brand{background:linear-gradient(135deg,var(--primary),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:20px;color:var(--text-secondary);margin-bottom:12px;line-height:1.6}
.hero-tagline{font-size:16px;color:var(--text-tertiary);margin-bottom:32px}
.hero-features{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px}
.hero-feature-tag{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:rgba(255,255,255,.12);backdrop-filter:blur(8px);border-radius:50px;font-size:14px;color:var(--text);font-weight:500;border:none}
.hero-feature-tag svg{flex-shrink:0}
.hero-actions{display:flex;gap:16px;align-items:center;margin-bottom:28px}
.hero-trust{font-size:13px;color:var(--text-tertiary)}

/* Hero illustration */
.hero-illustration{position:relative}
.hero-illustration img{width:100%;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}

/* ===== Illustrative image cards ===== */
.illust-card{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.illust-card img{width:100%;height:100%;object-fit:cover;display:block}
.illust-overlay{position:absolute;bottom:0;left:0;right:0;padding:20px 24px;background:linear-gradient(transparent,rgba(0,0,0,.55));color:#fff}
.illust-overlay h4{font-size:18px;font-weight:700;margin-bottom:4px}
.illust-overlay p{font-size:13px;opacity:.9}

/* ===== Business Tabs ===== */
.business-tabs{display:flex;justify-content:center;gap:8px;margin-bottom:48px}
.business-tab{padding:12px 32px;border-radius:50px;font-size:16px;font-weight:600;cursor:pointer;border:2px solid var(--border);background:#fff;color:var(--text-secondary);transition:var(--transition)}
.business-tab.active-sport{background:linear-gradient(135deg,var(--primary),#4080ff);color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(22,93,255,.3)}
.business-tab.active-speech{background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;border-color:transparent;box-shadow:0 4px 14px rgba(54,211,153,.3)}
.business-panel{display:none;animation:fadeIn .4s ease}
.business-panel.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

/* Disease cards */
.disease-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:48px}
.disease-card{background:var(--bg-card);border-radius:var(--radius);padding:28px;border:1px solid var(--border);transition:var(--transition)}
.disease-card:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.disease-card.speech:hover{border-color:var(--green)}
.disease-card h4{font-size:18px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.disease-card h4 .icon-dot{width:8px;height:8px;border-radius:50%;background:var(--primary)}
.disease-card.speech h4 .icon-dot{background:var(--green)}
.disease-card .tags{display:flex;flex-wrap:wrap;gap:8px}
.disease-card .tag{padding:5px 14px;background:#165DFF;color:#fff;border-radius:50px;font-size:13px;font-weight:500}
.disease-card.speech .tag{background:#0FC6C2;color:#fff}

/* Stages */
.stages-section{margin-bottom:48px}
.stages-section h3{font-size:22px;font-weight:700;margin-bottom:24px;text-align:center}
.stages-timeline{display:flex;gap:0;position:relative}
.stage-item{flex:1;text-align:center;padding:24px 16px;position:relative}
.stage-item::before{content:'';position:absolute;top:36px;left:50%;right:-50%;height:2px;background:var(--border)}
.stage-item:last-child::before{display:none}
.stage-num{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;margin:0 auto 12px;position:relative;z-index:1}
.stage-title{font-size:15px;font-weight:600;margin-bottom:4px}
.stage-desc{font-size:13px;color:var(--text-tertiary)}

/* Service features */
.service-features{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:48px}
.service-feature{display:flex;align-items:center;gap:10px;padding:10px 20px;background:#fff;border-radius:50px;border:none;font-size:14px;font-weight:500;color:var(--text);box-shadow:0 2px 8px rgba(0,0,0,.06)}
.sf-icon{width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sf-icon.blue{background:#165DFF}
.sf-icon.green{background:#0FC6C2}
.sf-icon.orange{background:#FF7D00}
.sf-icon.purple{background:#722ED1}

/* Training cards */
.training-examples{margin-bottom:48px}
.training-examples h3{font-size:22px;font-weight:700;margin-bottom:24px;text-align:center}
.training-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.training-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}
.training-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.training-card-img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#f0f5ff}
.training-card-body{padding:20px}
.training-card-body h4{font-size:16px;font-weight:700;margin-bottom:8px}
.training-card-body p{font-size:13px;color:var(--text-tertiary);line-height:1.6}

/* Illustrative hero section for business */
.biz-hero-row{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-bottom:48px;align-items:center}
.biz-hero-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.biz-hero-img img{width:100%;height:320px;object-fit:cover;display:block}
.biz-hero-text h3{font-size:28px;font-weight:700;margin-bottom:16px}
.biz-hero-text p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:16px}

/* FAQ */
.faq-section{margin-bottom:20px}
.faq-section h3{font-size:22px;font-weight:700;margin-bottom:24px;text-align:center}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:8px;overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--primary)}
.faq-item.speech:hover{border-color:var(--green)}
.faq-question{padding:16px 20px;display:flex;align-items:center;justify-content:space-between;cursor:pointer;font-size:15px;font-weight:600;background:#fff;user-select:none}
.faq-question svg{transition:var(--transition);flex-shrink:0;color:var(--text-tertiary)}
.faq-item.open .faq-question svg{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-answer-inner{padding:0 20px 16px;font-size:14px;color:var(--text-secondary);line-height:1.8}
.faq-item.open .faq-answer{max-height:300px}

/* Cooperation */
.cooperation-section{margin-top:48px;padding:28px;background:var(--green-light);border-radius:var(--radius);border:1px solid rgba(54,211,153,.2)}
.cooperation-section h4{font-size:18px;font-weight:700;margin-bottom:12px;color:var(--green-dark)}
.cooperation-section p{font-size:14px;color:var(--text-secondary);line-height:1.8}

/* ===== Advantages with images ===== */
.advantages-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.advantage-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition);position:relative}
.advantage-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.advantage-card-img{width:100%;height:200px;object-fit:cover}
.advantage-card-body{padding:28px}
.advantage-card-body h3{font-size:20px;font-weight:700;margin-bottom:12px}
.advantage-card-body p{font-size:14px;color:var(--text-secondary);line-height:1.8}

/* ===== Partners ===== */
.partners-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:800px;margin:0 auto}
.partner-card{background:var(--bg-card);border-radius:var(--radius);padding:36px;text-align:center;border:1px solid var(--border);transition:var(--transition)}
.partner-card:hover{box-shadow:var(--shadow);border-color:var(--primary)}
.partner-logo{width:72px;height:72px;border-radius:16px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:28px}
.partner-logo-slot{height:84px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px}
.partner-logo-img{display:block;width:auto;height:auto;max-width:100%;max-height:76px;object-fit:contain}
.partner-logo-img--banner{border-radius:6px;box-shadow:0 2px 8px rgba(22,93,255,.12)}
.partner-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.partner-card p{font-size:13px;color:var(--text-tertiary)}
.partner-badge{display:inline-block;margin-top:12px;padding:5px 16px;background:#0FC6C2;color:#fff;border-radius:50px;font-size:12px;font-weight:600}

/* ===== Process ===== */
.process-steps{display:flex;gap:0;position:relative;max-width:1000px;margin:0 auto}
.process-step{flex:1;text-align:center;padding:0 12px;position:relative}
.process-step::after{content:'';position:absolute;top:28px;left:60%;width:calc(100% - 20%);height:2px;background:linear-gradient(90deg,var(--primary),var(--green));opacity:.3}
.process-step:last-child::after{display:none}
.process-num{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--green));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;margin:0 auto 16px;position:relative;z-index:1;box-shadow:0 4px 14px rgba(22,93,255,.2)}
.process-step h4{font-size:16px;font-weight:700;margin-bottom:6px}
.process-step p{font-size:13px;color:var(--text-tertiary);line-height:1.6}

/* ===== Knowledge cards (with images) ===== */
.knowledge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
a.knowledge-card{text-decoration:none;color:inherit;display:block}
.knowledge-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:var(--transition);cursor:pointer}
.knowledge-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.knowledge-card-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.knowledge-card-body{padding:20px}
.knowledge-card-tag{display:inline-block;padding:4px 12px;border-radius:50px;font-size:12px;font-weight:600;margin-bottom:8px;color:#fff}
.knowledge-card-tag.sport{background:#165DFF}
.knowledge-card-tag.speech{background:#0FC6C2}
.knowledge-card-body h4{font-size:16px;font-weight:700;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.knowledge-card-meta{font-size:12px;color:var(--text-tertiary)}

/* ===== Phone Mockup for APP ===== */
.phone-mockup{width:280px;height:560px;background:#1a1a2e;border-radius:36px;padding:12px;box-shadow:0 20px 60px rgba(0,0,0,.25);position:relative;flex-shrink:0}
.phone-mockup::before{content:'';position:absolute;top:14px;left:50%;transform:translateX(-50%);width:80px;height:6px;background:#333;border-radius:4px;z-index:2}
.phone-screen{width:100%;height:100%;border-radius:26px;overflow:hidden;background:#fff;position:relative}
.phone-screen img{width:100%;height:100%;object-fit:contain;object-position:center;background:#f9fafb}
.phone-mockup-sm{width:220px;height:440px;border-radius:28px;padding:10px}
.phone-mockup-sm::before{width:60px;height:5px;top:12px}
.phone-mockup-sm .phone-screen{border-radius:20px}

/* App showcase */
.app-showcase{display:flex;gap:40px;align-items:center;justify-content:center;flex-wrap:wrap}
.app-showcase-phones{display:flex;gap:24px;align-items:flex-end}
.app-showcase-info{max-width:400px}
.app-showcase-info h3{font-size:28px;font-weight:700;margin-bottom:16px}
.app-showcase-info p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:20px}

/* App feature list */
.app-features-list{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.app-feature-item{display:flex;align-items:flex-start;gap:12px;padding:12px 16px;background:var(--bg-section);border-radius:var(--radius-sm)}
.app-feature-item .feat-icon{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.app-feature-item .feat-icon.blue{background:var(--primary-light);color:var(--primary)}
.app-feature-item .feat-icon.green{background:var(--green-light);color:var(--green)}
.app-feature-item .feat-text h4{font-size:14px;font-weight:600;margin-bottom:2px}
.app-feature-item .feat-text p{font-size:13px;color:var(--text-tertiary);margin:0}

/* Phone carousel (start page) */
.phones-carousel{display:flex;gap:32px;justify-content:center;align-items:flex-start;flex-wrap:wrap;margin-bottom:48px}
.phone-group{text-align:center}
.phone-group .phone-label{margin-top:16px;font-size:15px;font-weight:600;color:var(--text)}
.phone-group .phone-desc{font-size:13px;color:var(--text-tertiary);max-width:240px;margin:4px auto 0}

/* ===== App Demo Grid (horizontal training images) ===== */
.app-demo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:20px}
.app-demo-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}
.app-demo-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.app-demo-card img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block}
.app-demo-info{padding:16px 20px}
.app-demo-info h4{font-size:15px;font-weight:700;margin-bottom:4px}
.app-demo-info p{font-size:13px;color:var(--text-tertiary);margin:0}

/* ===== Floating CTA ===== */
.floating-cta{position:fixed;bottom:32px;right:32px;z-index:999;animation:pulse 2s infinite}
.floating-cta .btn{box-shadow:0 6px 24px rgba(22,93,255,.4)}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}

/* ===== Footer ===== */
.footer{background:#1a1a2e;color:rgba(255,255,255,.6);padding:40px 0 24px}
.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.footer-left,.footer-right{font-size:13px}
.icp-link{color:inherit;text-decoration:none;transition:color .2s ease}
.icp-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.icp-link:focus-visible{color:#fff;outline:2px solid currentColor;outline-offset:4px;border-radius:2px}

/* ===== Start Page ===== */
.start-hero{padding-top:calc(var(--nav-height) + 60px);padding-bottom:60px;background:linear-gradient(160deg,#f0f5ff 0%,#e6faf2 50%,#f7f8fa 100%);text-align:center}
.start-hero h1{font-size:40px;font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,var(--primary),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.start-hero .subtitle{font-size:18px;color:var(--text-secondary);margin-bottom:8px}
.start-hero .trust-line{font-size:14px;color:var(--green-dark);font-weight:600}

.start-cards{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:900px;margin:0 auto}
.start-card{background:var(--bg-card);border-radius:var(--radius-lg);padding:40px;text-align:center;border:1px solid var(--border);box-shadow:var(--shadow)}
.start-card-icon{margin:0 auto 16px;display:flex;align-items:center;justify-content:center}
.start-card h3{font-size:20px;font-weight:700;margin-bottom:12px}
.start-card p{font-size:14px;color:var(--text-secondary);margin-bottom:24px;line-height:1.7}
.start-card .download-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.start-card .qr-placeholder{width:180px;height:180px;background:var(--bg-section);border-radius:var(--radius);margin:0 auto 16px;display:flex;align-items:center;justify-content:center;border:2px dashed var(--border);color:var(--text-tertiary);font-size:14px}
.start-note{max-width:600px;margin:40px auto 0;text-align:center;padding:24px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}
.start-note p{font-size:14px;color:var(--text-secondary);margin-bottom:4px}
.start-note .highlight{color:var(--primary);font-weight:600}

/* ===== Knowledge Page ===== */
.knowledge-hero{padding-top:calc(var(--nav-height) + 40px);padding-bottom:40px;background:var(--bg-section);text-align:center}
.knowledge-hero h1{font-size:36px;font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,var(--primary),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.knowledge-hero p{color:var(--text-secondary);font-size:16px}
.knowledge-filter{display:flex;justify-content:center;gap:12px;margin-bottom:40px;flex-wrap:wrap}
.knowledge-filter-btn{padding:10px 24px;border-radius:50px;font-size:14px;font-weight:600;cursor:pointer;border:2px solid var(--border);background:#fff;color:var(--text-secondary);transition:var(--transition)}
.knowledge-filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.knowledge-search{max-width:500px;margin:0 auto 40px;position:relative}
.knowledge-search input{width:100%;padding:14px 48px 14px 20px;border-radius:50px;border:2px solid var(--border);font-size:15px;outline:none;transition:var(--transition)}
.knowledge-search input:focus{border-color:var(--primary)}
.knowledge-search svg{position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--text-tertiary)}
.knowledge-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}

/* ===== About Page ===== */
.about-hero{padding-top:calc(var(--nav-height) + 60px);padding-bottom:60px;background:linear-gradient(160deg,#f0f5ff 0%,#e6faf2 50%,#f7f8fa 100%);text-align:center}
.about-hero h1{font-size:40px;font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,var(--primary),var(--green));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.about-content{max-width:800px;margin:0 auto}
.about-content p{font-size:16px;color:var(--text-secondary);line-height:2;margin-bottom:24px}
.about-img{width:100%;max-width:800px;margin:0 auto 40px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.about-img img{width:100%;height:360px;object-fit:cover}

.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:700px;margin:0 auto}
.contact-card{display:flex;align-items:center;gap:16px;padding:24px;background:var(--bg-card);border-radius:var(--radius);border:1px solid var(--border)}
.contact-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-info h4{font-size:13px;font-weight:500;color:var(--text-tertiary);margin-bottom:2px}
.contact-info p{font-size:15px;font-weight:600;color:var(--text);margin:0;line-height:1.5}

/* Mission cards */
.mission-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:800px;margin:0 auto}
.mission-card{background:var(--bg-card);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition)}
.mission-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.mission-card-img{width:100%;height:180px;object-fit:cover}
.mission-card-body{padding:24px}
.mission-card-body h3{font-size:20px;font-weight:700;margin-bottom:12px}
.mission-card-body p{font-size:14px;color:var(--text-secondary);line-height:1.8}

/* ===== Article Detail ===== */
.article-hero{padding-top:calc(var(--nav-height) + 40px);padding-bottom:40px;background:var(--bg-section)}
.article-hero .container{max-width:800px}
.article-back{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-tertiary);margin-bottom:20px}
.article-back:hover{color:var(--primary)}
.article-tag{display:inline-block;padding:5px 14px;border-radius:50px;font-size:12px;font-weight:600;margin-bottom:12px;color:#fff}
.article-tag.sport{background:#165DFF}
.article-tag.speech{background:#0FC6C2}
.article-hero h1{font-size:32px;font-weight:800;line-height:1.4;margin-bottom:12px}
.article-meta{font-size:14px;color:var(--text-tertiary);display:flex;gap:16px;flex-wrap:wrap}
.article-cover{max-width:800px;margin:0 auto;padding:0 24px}
.article-cover img{width:100%;border-radius:var(--radius-lg);margin-top:-20px;box-shadow:var(--shadow-lg)}
.article-body{max-width:800px;margin:0 auto;padding:40px 24px 80px}
.article-body h2{font-size:22px;font-weight:700;margin:36px 0 16px;padding-left:14px;border-left:4px solid var(--primary)}
.article-body h3{font-size:18px;font-weight:600;margin:28px 0 12px}
.article-body p{font-size:16px;color:var(--text-secondary);line-height:2;margin-bottom:16px}
.article-body ul,.article-body ol{margin:0 0 16px 20px;color:var(--text-secondary)}
.article-body li{margin-bottom:8px;line-height:1.8;font-size:15px}
.article-body blockquote{margin:20px 0;padding:16px 24px;background:var(--primary-light);border-left:4px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-size:15px}
.article-body .tip-box{padding:16px 20px;background:var(--green-light);border-radius:var(--radius-sm);margin:20px 0;font-size:14px;color:var(--green-dark);line-height:1.8}
.article-body strong{color:var(--text)}
.article-cta{max-width:800px;margin:0 auto 60px;padding:0 24px}
.article-cta-box{background:linear-gradient(135deg,#f0f5ff,#e6faf2);border-radius:var(--radius-lg);padding:32px;text-align:center}
.article-cta-box h3{font-size:20px;font-weight:700;margin-bottom:8px}
.article-cta-box p{font-size:14px;color:var(--text-secondary);margin-bottom:20px}

/* ===== Mobile Menu ===== */
.mobile-menu{display:none;position:fixed;top:var(--nav-height);left:0;right:0;bottom:0;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);z-index:999;padding:32px 24px;flex-direction:column;gap:4px}
.mobile-menu.active{display:flex}
.mobile-menu a{padding:16px 0;font-size:18px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border)}
.mobile-cta-bottom{display:none;position:fixed;bottom:0;left:0;right:0;padding:12px 24px;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-top:1px solid var(--border);z-index:998}
.mobile-cta-bottom .btn{width:100%}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .hero-content{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero-text h1{font-size:36px}
  .hero-features{justify-content:center}
  .hero-actions{justify-content:center}
  .advantages-grid{grid-template-columns:1fr}
  .process-steps{flex-direction:column;gap:8px}
  .process-step::after{display:none}
  .start-cards{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .biz-hero-row{grid-template-columns:1fr}
  .biz-hero-img img{height:240px}
  .app-showcase{flex-direction:column;align-items:center}
  .app-showcase-phones{justify-content:center}
  .mission-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  :root{--nav-height:60px}
  .section{padding:56px 0}
  .section-title h2{font-size:28px}
  .nav-links,.nav-cta{display:none}
  .hamburger{display:flex}
  .mobile-cta-bottom{display:block}
  .floating-cta{bottom:80px;right:20px}
  .hero{padding-top:calc(var(--nav-height) + 40px);padding-bottom:56px;min-height:auto}
  .hero-text h1{font-size:30px}
  .hero-subtitle{font-size:16px}
  .disease-grid{grid-template-columns:1fr}
  .stages-timeline{flex-direction:column;gap:4px}
  .stage-item::before{display:none}
  .training-grid{grid-template-columns:1fr}
  .knowledge-grid,.knowledge-list{grid-template-columns:1fr}
  .partners-grid{grid-template-columns:1fr}
  .business-tabs{flex-direction:column;align-items:center}
  .footer-content{flex-direction:column;text-align:center}
  .start-hero h1,.about-hero h1,.knowledge-hero h1{font-size:28px}
  .article-hero h1{font-size:24px}
  .article-body{padding:28px 16px 60px}
  .article-cover{padding:0 16px}
  .article-cta{padding:0 16px}
  body{padding-bottom:60px}
  .phone-mockup{width:220px;height:440px;border-radius:28px;padding:10px}
  .phone-mockup::before{width:60px;height:5px;top:12px}
  .phone-mockup .phone-screen{border-radius:20px}
  .phones-carousel{gap:20px}
  .app-demo-grid{grid-template-columns:1fr}
  .app-showcase-phones{flex-direction:column;align-items:center}
}
@media(max-width:480px){
  .container{padding:0 16px}
  .hero-text h1{font-size:26px}
}