/* WPK正版官网登录入口 - 主样式表 */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb; --gray-500: #6b7280; --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827;
    --white: #fff; --shadow-sm: 0 1px 2px rgba(0,0,0,0.05); --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1); --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1); --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius-xl: 1.5rem; --radius-full: 9999px;
}
*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;color:var(--gray-800);background:var(--white);line-height:1.6}

.navbar{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,0.85);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,231,235,0.5)}
.navbar-inner{max-width:1280px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:4rem}
.navbar-brand{display:flex;align-items:center;gap:0.6rem;text-decoration:none}
.navbar-logo{width:2.5rem;height:2.5rem;background:linear-gradient(135deg,#2563eb,#0ea5e9);border-radius:0.75rem;display:flex;align-items:center;justify-content:center;color:white;font-size:1.25rem;box-shadow:0 4px 6px -1px rgba(37,99,235,0.3)}
.navbar-title{font-size:1.2rem;font-weight:800;color:var(--gray-900)}
.navbar-links{display:flex;align-items:center;gap:2rem;list-style:none}
.navbar-links a{font-size:.875rem;font-weight:500;color:var(--gray-600);text-decoration:none;transition:color .2s}
.navbar-links a:hover{color:var(--primary)}
.btn{display:inline-flex;align-items:center;padding:.625rem 1.5rem;font-size:.875rem;font-weight:600;border-radius:var(--radius-full);text-decoration:none;transition:all .2s;cursor:pointer;border:none}
.btn-primary{background:var(--primary);color:white;box-shadow:0 4px 6px -1px rgba(37,99,235,0.3)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 6px 10px -1px rgba(37,99,235,0.4);transform:translateY(-1px)}
.btn-outline{background:transparent;border:2px solid var(--gray-200);color:var(--gray-700)}
.btn-outline:hover{border-color:var(--primary-light);color:var(--primary)}
.btn-lg{padding:.875rem 2rem;font-size:1.1rem}

.hero{padding:7rem 1.5rem 5rem;background:linear-gradient(135deg,#eff6ff,#fff,#f0f9ff)}
.hero-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:rgba(37,99,235,.06);border-radius:var(--radius-full);margin-bottom:1.5rem;font-size:.8rem;font-weight:700;color:var(--primary)}
.hero-title{font-size:clamp(2rem,5vw,3.75rem);font-weight:900;line-height:1.1;color:var(--gray-900);margin-bottom:1.5rem}
.hero-title span{background:linear-gradient(135deg,#2563eb,#0ea5e9);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:1.125rem;color:var(--gray-500);line-height:1.7;max-width:480px;margin-bottom:2rem}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap}
.hero-image-wrap{position:relative}
.hero-image-wrap::before{content:'';position:absolute;inset:-1rem;background:linear-gradient(135deg,rgba(37,99,235,.2),rgba(14,165,233,.2));border-radius:2rem;filter:blur(3rem);opacity:.5}
.hero-image{position:relative;width:100%;height:380px;object-fit:cover;border-radius:1.5rem;box-shadow:var(--shadow-xl)}
.hero-trust{margin-top:1.5rem;display:flex;align-items:center;gap:.5rem;font-size:.85rem;color:#9ca3af}

.section-header{text-align:center;margin-bottom:3.5rem}
.section-badge{font-size:.8rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:.1em}
.section-title{margin-top:.75rem;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:900;color:var(--gray-900)}
.section-subtitle{margin-top:1rem;font-size:1.125rem;color:var(--gray-500);max-width:640px;margin-left:auto;margin-right:auto}

.features-section{padding:5rem 1.5rem;background:var(--gray-50)}
.features-inner{max-width:1280px;margin:0 auto}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.feature-card{background:white;border-radius:var(--radius-xl);padding:2rem;border:1px solid var(--gray-100);box-shadow:var(--shadow-sm);transition:all .3s ease}
.feature-card:hover{box-shadow:var(--shadow-xl);transform:translateY(-4px)}
.feature-icon{width:3.5rem;height:3.5rem;border-radius:.75rem;display:flex;align-items:center;justify-content:center;margin-bottom:1.25rem;font-size:1.5rem;color:white;transition:transform .3s}
.feature-card:hover .feature-icon{transform:scale(1.1)}
.feature-title{font-size:1.25rem;font-weight:700;color:var(--gray-900);margin-bottom:.75rem}
.feature-desc{color:var(--gray-500);line-height:1.6;font-size:.95rem}

.steps-section{padding:5rem 1.5rem;background:white}
.steps-inner{max-width:1280px;margin:0 auto}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:3rem}
.step-card{text-align:center;padding:2rem;position:relative}
.step-num{width:5rem;height:5rem;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;font-size:1.75rem;font-weight:900;color:white;box-shadow:0 10px 15px -3px rgba(37,99,235,.2)}

.stats-section{padding:4rem 1.5rem;background:linear-gradient(135deg,#1d4ed8,#2563eb)}
.stats-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.stat-value{font-size:clamp(2rem,4vw,3.5rem);font-weight:900;color:white}
.stat-label{margin-top:.5rem;color:rgba(255,255,255,.75);font-weight:500;font-size:.95rem}

.testimonials-section{padding:5rem 1.5rem;background:var(--gray-50)}
.testimonials-inner{max-width:1280px;margin:0 auto}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.testimonial-card{background:white;border-radius:var(--radius-xl);padding:2rem;border:1px solid var(--gray-100);box-shadow:var(--shadow-sm);transition:all .3s}
.testimonial-card:hover{box-shadow:var(--shadow-lg)}
.testimonial-stars{color:#f59e0b;margin-bottom:1rem;font-size:.85rem}
.testimonial-text{color:var(--gray-600);line-height:1.6;margin-bottom:1.5rem;font-size:.95rem}
.testimonial-author{font-weight:600;color:var(--gray-900);font-size:.9rem}
.testimonial-role{color:var(--gray-400);font-size:.8rem}

.faq-section{padding:5rem 1.5rem;background:white}
.faq-inner{max-width:768px;margin:0 auto}
.faq-item{background:white;border-radius:var(--radius-xl);border:1px solid var(--gray-100);box-shadow:var(--shadow-sm);margin-bottom:1rem;overflow:hidden}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.5rem;cursor:pointer;font-weight:600;color:var(--gray-900);transition:color .2s;user-select:none}
.faq-question:hover{color:var(--primary)}
.faq-question i{color:var(--gray-400);transition:transform .3s}
.faq-item.open .faq-question i{transform:rotate(180deg)}
.faq-answer{padding:0 1.5rem 1.25rem;color:var(--gray-500);line-height:1.6;display:none}
.faq-item.open .faq-answer{display:block}

.cta-section{padding:5rem 1.5rem;background:linear-gradient(135deg,#1d4ed8,#2563eb,#3b82f6)}
.cta-inner{max-width:800px;margin:0 auto;text-align:center}
.cta-title{font-size:clamp(1.75rem,4vw,3rem);font-weight:900;color:white;margin-bottom:1.25rem}
.cta-desc{font-size:1.125rem;color:rgba(255,255,255,.8);max-width:560px;margin:0 auto 2.5rem;line-height:1.6}
.cta-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.btn-white{background:white;color:var(--primary);font-weight:700;box-shadow:0 10px 25px -5px rgba(0,0,0,.2)}
.btn-white:hover{box-shadow:0 15px 30px -5px rgba(255,255,255,.3);transform:translateY(-2px)}
.btn-ghost{border:2px solid rgba(255,255,255,.4);color:white;font-weight:700}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.6)}

.footer{background:var(--gray-900);color:var(--gray-400);padding:3rem 1.5rem}
.footer-inner{max-width:1280px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2.5rem}
.footer-brand{display:flex;align-items:center;gap:.5rem;margin-bottom:1rem}
.footer-logo{width:2rem;height:2rem;background:linear-gradient(135deg,#2563eb,#0ea5e9);border-radius:.5rem;display:flex;align-items:center;justify-content:center;color:white;font-size:.75rem}
.footer-brand-name{font-size:1.125rem;font-weight:700;color:white}
.footer-desc{font-size:.85rem;line-height:1.6}
.footer-col-title{color:white;font-weight:600;margin-bottom:1rem;font-size:.9rem}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:.5rem}
.footer-links a{color:var(--gray-400);text-decoration:none;font-size:.85rem;transition:color .2s}
.footer-links a:hover{color:white}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:2rem;text-align:center;font-size:.85rem}

@media(max-width:768px){
    .hero-inner{grid-template-columns:1fr;text-align:center}
    .hero-desc{margin:0 auto 2rem}.hero-actions{justify-content:center}
    .hero-image-wrap{max-width:400px;margin:0 auto}.hero-image{height:280px}
    .features-grid,.testimonials-grid{grid-template-columns:1fr}
    .steps-grid{grid-template-columns:1fr}
    .stats-inner{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .navbar-links{display:none}
}
@media(max-width:480px){
    .stats-inner{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
}