/* ============================================================
 *  SaaS 平台前端全局样式 — home.css
 *  适用页面：首页、应用市场、应用详情、代理商首页、代理注册
 * ============================================================ */

/* ── 1. Reset / Base ─────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6;color:#333;background:#fff;overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color .25s}
ul,ol{list-style:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5{font-weight:700;line-height:1.3;color:#1a1a2e}
p{line-height:1.8;color:#555}

/* ── 2. 导航栏 Navbar ────────────────────────────── */
.navbar{position:fixed;top:0;left:0;right:0;z-index:9999;padding:16px 0;transition:all .35s ease}
.navbar.scrolled{background:rgba(255,255,255,0.97);backdrop-filter:blur(12px);box-shadow:0 2px 20px rgba(0,0,0,0.08);padding:10px 0}
.nav-container{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}
.logo{font-size:20px;font-weight:800;color:#fff;letter-spacing:-0.5px;transition:color .3s}
.logo img{display:inline-block;vertical-align:middle}
.navbar.scrolled .logo{color:#1a1a2e}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;font-size:24px;color:#fff;padding:4px 8px}
.navbar.scrolled .nav-toggle{color:#333}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a{padding:8px 14px;font-size:14px;font-weight:500;color:rgba(255,255,255,0.85);border-radius:6px;transition:all .25s}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,0.15)}
.navbar.scrolled .nav-links a{color:#555}
.navbar.scrolled .nav-links a:hover,.navbar.scrolled .nav-links a.active{color:#667eea;background:rgba(102,126,234,0.08)}
.nav-actions{display:flex;align-items:center;gap:10px}

/* ── 3. Buttons ─────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 24px;font-size:14px;font-weight:600;border-radius:8px;border:none;cursor:pointer;transition:all .3s;text-decoration:none;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 15px rgba(102,126,234,0.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,0.45)}
.btn-secondary{background:rgba(255,255,255,0.15);color:#fff;border:1px solid rgba(255,255,255,0.3);backdrop-filter:blur(4px)}
.btn-secondary:hover{background:rgba(255,255,255,0.25)}
.navbar.scrolled .btn-secondary{color:#667eea;border-color:#667eea;background:transparent}
.navbar.scrolled .btn-secondary:hover{background:rgba(102,126,234,0.06)}
.btn-white{background:#fff;color:#667eea;font-weight:700;box-shadow:0 4px 20px rgba(0,0,0,0.15)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 6px 25px rgba(0,0,0,0.2)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.6)}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff}
.btn-gradient{background:linear-gradient(135deg,#667eea 0%,#764ba2 50%,#f093fb 100%);color:#fff;box-shadow:0 4px 20px rgba(102,126,234,0.4)}
.btn-gradient:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(102,126,234,0.5)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.4)}
.btn-ghost:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.7)}

/* ── 4. Hero 区块 ────────────────────────────────── */
.hero{padding:180px 24px 100px;background:linear-gradient(135deg,#667eea 0%,#764ba2 50%,#f093fb 100%);text-align:center;position:relative;overflow:hidden;min-height:600px;display:flex;align-items:center;justify-content:center}
.hero::before{content:'';position:absolute;inset:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.07) 0%,transparent 50%);animation:heroRotate 40s linear infinite}
.hero .particles{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero .particles span{position:absolute;border-radius:50%;background:rgba(255,255,255,0.08);animation:particleFloat linear infinite}
.hero .particles span:nth-child(1){width:40px;height:40px;left:8%;top:18%;animation-duration:20s}
.hero .particles span:nth-child(2){width:16px;height:16px;left:72%;top:55%;animation-duration:24s;animation-delay:-4s}
.hero .particles span:nth-child(3){width:28px;height:28px;left:28%;top:68%;animation-duration:17s;animation-delay:-7s}
.hero .particles span:nth-child(4){width:55px;height:55px;left:78%;top:12%;animation-duration:28s;animation-delay:-10s}
.hero .particles span:nth-child(5){width:20px;height:20px;left:48%;top:38%;animation-duration:22s;animation-delay:-3s}
.hero .particles span:nth-child(6){width:35px;height:35px;left:18%;top:48%;animation-duration:26s;animation-delay:-12s}
.hero-inner{max-width:800px;margin:0 auto;position:relative;z-index:1}
.hero h1{font-size:54px;color:#fff;font-weight:800;margin-bottom:24px;letter-spacing:-1.5px;line-height:1.15}
.gradient-text{background:linear-gradient(90deg,#fff 0%,#e0e7ff 40%,#fde68a 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:19px;color:rgba(255,255,255,0.88);line-height:1.8;margin-bottom:36px}
.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* ── 5. 统计条 Stats Bar ─────────────────────────── */
.stats-bar{background:#1a1a2e;padding:0}
.stats-bar-inner{max-width:1200px;margin:0 auto;padding:40px 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item{padding:16px}
.stat-number{font-size:36px;font-weight:800;background:linear-gradient(135deg,#667eea,#f093fb);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}
.stat-label{font-size:14px;color:rgba(255,255,255,0.6);font-weight:400}

/* ── 6. Section 通用 ─────────────────────────────── */
.section{padding:100px 24px;background:#fff}
.section-alt{background:#f8f9fe}
.section-inner{max-width:1200px;margin:0 auto}
.section-head{text-align:center;margin-bottom:60px}
.section-head .tag{display:inline-block;padding:5px 16px;font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:20px;margin-bottom:16px}
.section-head h2{font-size:36px;color:#1a1a2e;margin-bottom:14px;letter-spacing:-0.5px}
.section-head p{font-size:16px;color:#888;max-width:600px;margin:0 auto}

/* ── 7. Features 功能卡片 ───────────────────────── */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:#fff;border-radius:16px;padding:40px 30px;border:1px solid #f0f0f5;transition:all .4s cubic-bezier(.25,.46,.45,.94)}
.feature-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,0.08);border-color:rgba(102,126,234,0.2)}
.feature-card .icon{width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;font-size:28px;color:#fff}
.feature-card .icon.c1{background:linear-gradient(135deg,#667eea,#764ba2)}
.feature-card .icon.c2{background:linear-gradient(135deg,#f093fb,#f5576c)}
.feature-card .icon.c3{background:linear-gradient(135deg,#43e97b,#38f9d7)}
.feature-card .icon.c4{background:linear-gradient(135deg,#4facfe,#00f2fe)}
.feature-card .icon.c5{background:linear-gradient(135deg,#fa709a,#fee140)}
.feature-card .icon.c6{background:linear-gradient(135deg,#a18cd1,#fbc2eb)}
.feature-card h3{font-size:20px;color:#1a1a2e;margin-bottom:12px}
.feature-card p{font-size:14px;color:#777;line-height:1.8}

/* ── 8. 代理商 Agent 区块 ───────────────────────── */
.agent-section{background:linear-gradient(135deg,#1a1a2e 0%,#2d2b55 100%);color:#fff}
.agent-section .section-head h2{color:#fff}
.agent-section .section-head p{color:rgba(255,255,255,0.6)}
.agent-section .section-head .tag{background:linear-gradient(135deg,#f093fb,#f5576c)}
.agent-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:48px}
.agent-card{background:rgba(255,255,255,0.06);border-radius:16px;padding:36px 24px;border:1px solid rgba(255,255,255,0.08);text-align:center;transition:all .35s}
.agent-card:hover{background:rgba(255,255,255,0.1);transform:translateY(-4px);border-color:rgba(255,255,255,0.18)}
.agent-card .icon{width:60px;height:60px;border-radius:14px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:26px;color:#fff}
.agent-card h4{font-size:18px;color:#fff;margin-bottom:12px}
.agent-card p{font-size:14px;color:rgba(255,255,255,0.6);line-height:1.8}
.agent-cta{text-align:center}

/* ── 9. 套餐 Pricing ─────────────────────────────── */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px;align-items:start}
.price-card{background:#fff;border-radius:20px;border:1px solid #f0f0f5;overflow:hidden;transition:all .4s;position:relative}
.price-card:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(0,0,0,0.08)}
.price-card.featured{border:2px solid #667eea;box-shadow:0 10px 40px rgba(102,126,234,0.18)}
.price-card.featured::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#667eea,#764ba2)}
.card-head{padding:36px 28px 20px;text-align:center;border-bottom:1px solid #f5f5f8}
.card-head .recommend{display:inline-block;padding:4px 14px;font-size:11px;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:20px;margin-bottom:12px}
.card-head h3{font-size:22px;color:#1a1a2e;margin-bottom:12px}
.card-head .price{font-size:42px;font-weight:800;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.card-head .price-desc{font-size:14px;color:#999;margin-top:6px}
.card-head .price-original{font-size:13px;color:#bbb;text-decoration:line-through;margin-top:4px}
.card-list{padding:24px 28px}
.card-list ul{display:flex;flex-direction:column;gap:12px}
.card-list li{font-size:14px;color:#555;display:flex;align-items:center;gap:10px}
.card-list li i{color:#667eea;font-size:16px;flex-shrink:0}
.card-action{padding:20px 28px 36px;text-align:center}
.card-action .btn{width:100%}

/* ── 10. 联系我们 Contact ─────────────────────────── */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info h3{font-size:22px;color:#1a1a2e;margin-bottom:28px}
.contact-item{display:flex;gap:16px;margin-bottom:24px}
.contact-item .icon{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff;flex-shrink:0}
.contact-item .text h4{font-size:15px;color:#1a1a2e;margin-bottom:4px}
.contact-item .text p{font-size:14px;color:#777;margin:0}
.contact-form{background:#f8f9fe;border-radius:16px;padding:36px}
.contact-form h3{font-size:22px;color:#1a1a2e;margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:14px;font-weight:500;color:#555;margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;border:1px solid #e0e0e0;border-radius:10px;font-size:14px;outline:none;transition:border-color .25s;font-family:inherit;background:#fff}
.form-group input:focus,.form-group textarea:focus{border-color:#667eea;box-shadow:0 0 0 3px rgba(102,126,234,0.08)}
.form-group textarea{min-height:100px;resize:vertical}
.btn-submit{width:100%;padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;box-shadow:0 4px 15px rgba(102,126,234,0.3);transition:all .3s}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,0.4)}

/* ── 11. CTA Banner ──────────────────────────────── */
.cta-banner{padding:80px 24px;background:linear-gradient(135deg,#667eea 0%,#764ba2 50%,#f093fb 100%);text-align:center;position:relative;overflow:hidden}
.cta-banner::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,0.1),transparent 50%)}
.cta-inner{max-width:700px;margin:0 auto;position:relative;z-index:1}
.cta-inner h2{font-size:34px;color:#fff;margin-bottom:16px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,0.85);margin-bottom:32px}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}

/* ── 12. Footer ─────────────────────────────────── */
.footer{background:#1a1a2e;color:rgba(255,255,255,0.7);padding:64px 24px 0}
.footer-inner{max-width:1200px;margin:0 auto}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,0.08)}
.footer-brand .logo{color:#fff;font-size:20px;font-weight:800;display:inline-block;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,0.5)}
.footer-col h5{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,0.5);transition:color .25s}
.footer-col a:hover{color:#fff}
.footer-bottom{padding:24px 0;text-align:center;border-top:1px solid rgba(255,255,255,0.08)}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.4)}

/* ── 13. Back to Top ─────────────────────────────── */
.back-to-top{position:fixed;bottom:32px;right:32px;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;cursor:pointer;font-size:20px;box-shadow:0 4px 16px rgba(102,126,234,0.4);opacity:0;visibility:hidden;transform:translateY(20px);transition:all .35s;z-index:9998}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{transform:translateY(-4px);box-shadow:0 6px 22px rgba(102,126,234,0.55)}

/* ── 14. 滚动渐入动画 ──────────────────────────────── */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ── 15. Keyframes ─────────────────────────────────── */
@keyframes heroRotate{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes particleFloat{0%{transform:translateY(0) translateX(0)}25%{transform:translateY(-30px) translateX(15px)}50%{transform:translateY(-10px) translateX(-20px)}75%{transform:translateY(-40px) translateX(10px)}100%{transform:translateY(0) translateX(0)}}

/* ── 16. 插件卡片（首页用）────────────────────────── */
.plugins-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.plugin-card{background:#fff;border-radius:14px;overflow:hidden;border:1px solid #f0f0f5;transition:all .35s;display:flex;flex-direction:column}
.plugin-card:hover{transform:translateY(-5px);box-shadow:0 16px 40px rgba(102,126,234,0.13);border-color:rgba(102,126,234,0.25)}
.plugin-card .card-banner{height:120px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}
.plugin-card .card-banner i{font-size:42px;color:#fff}
.plugin-card .card-banner img{max-height:60px;border-radius:8px}
.plugin-card .card-body{padding:20px;flex:1;display:flex;flex-direction:column}
.plugin-card .card-body h4{font-size:17px;color:#1a1a2e;margin-bottom:8px}
.plugin-card .card-body p{font-size:13px;color:#888;line-height:1.7;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.plugin-card .card-footer{padding:14px 20px;border-top:1px solid #f5f5f8;display:flex;justify-content:space-between;align-items:center}
.badge{padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600}
.badge-free{background:#e8faf0;color:#22c55e}
.badge-paid{background:#fff5f5;color:#f43f5e}
.plugins-empty{text-align:center;padding:80px 20px;color:#bbb}
.plugins-empty i{font-size:64px;display:block;margin-bottom:20px;color:#ddd}
.plugins-empty p{font-size:16px;color:#999}

/* ── 17. 插件详情页 Plugin Detail ─────────────────── */
.pd-container{max-width:1100px;margin:0 auto;padding:0 24px}
.pd-breadcrumb{padding:14px 0;background:#f8f9fe;border-bottom:1px solid #f0f0f5}
.pd-breadcrumb .pd-container{display:flex;align-items:center;gap:8px;font-size:13px;color:#999}
.pd-breadcrumb a{color:#667eea;transition:color .2s}
.pd-breadcrumb a:hover{color:#764ba2}
.pd-bc-sep{color:#ccc}
.pd-bc-current{color:#333;font-weight:500}
.pd-hero{padding:60px 0 70px;background:linear-gradient(135deg,#1a1a2e 0%,#2d2b55 100%);position:relative;overflow:hidden}
.pd-hero-bg{position:absolute;inset:0;background:radial-gradient(circle at 80% 30%,rgba(102,126,234,0.25),transparent 50%)}
.pd-hero-inner{position:relative;z-index:1}
.pd-hero-main{display:flex;align-items:flex-start;gap:36px;flex-wrap:wrap}
.pd-hero-left{flex:1;min-width:280px;display:flex;gap:24px;align-items:flex-start}
.pd-hero-icon{width:80px;height:80px;border-radius:20px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;font-size:40px;color:#fff;flex-shrink:0}
.pd-hero-icon img{max-width:60%;max-height:60%;border-radius:10px}
.pd-hero-info h1{font-size:28px;color:#fff;margin-bottom:14px}
.pd-hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.pd-tag{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500}
.pd-tag-version{background:rgba(102,126,234,0.3);color:#a8b8ff}
.pd-tag-status{background:rgba(34,197,94,0.25);color:#86efac}
.pd-tag-free{background:rgba(250,204,21,0.25);color:#fde68a}
.pd-hero-desc{font-size:14px;color:rgba(255,255,255,0.7);line-height:1.8;margin-bottom:12px}
.pd-hero-meta{display:flex;gap:20px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,0.5)}
.pd-hero-meta span{display:flex;align-items:center;gap:5px}
.pd-hero-meta i{font-size:15px}
.pd-hero-right{flex-shrink:0}
.pd-price-card{background:rgba(255,255,255,0.08);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.12);border-radius:16px;padding:28px 32px;text-align:center;min-width:220px}
.pd-price-free .pd-price-amount{font-size:36px;font-weight:800;color:#fff;display:block;margin-bottom:6px}
.pd-price-hint{font-size:13px;color:rgba(255,255,255,0.5)}
.pd-price-paid{display:flex;align-items:baseline;justify-content:center;gap:2px;margin-bottom:8px}
.pd-price-paid .pd-price-currency{font-size:20px;color:#fff;font-weight:600}
.pd-price-paid .pd-price-amount{font-size:42px;font-weight:800;color:#fff}
.pd-price-paid .pd-price-unit{font-size:14px;color:rgba(255,255,255,0.5)}
.pd-price-renew{font-size:13px;color:rgba(255,255,255,0.5);margin-bottom:8px}
.pd-btn-primary{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:13px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;transition:all .3s;margin-top:16px;text-decoration:none}
.pd-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,0.45)}
.pd-btn-block{display:flex}
.pd-body{padding:60px 0;background:#f8f9fe}
.pd-body-grid{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start}
.pd-main{display:flex;flex-direction:column;gap:40px}
.pd-section{background:#fff;border-radius:16px;padding:36px;border:1px solid #f0f0f5}
.pd-section-head{margin-bottom:28px}
.pd-section-tag{display:inline-block;padding:3px 12px;font-size:11px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:16px;margin-bottom:10px}
.pd-section-head h2{font-size:22px;color:#1a1a2e}
.pd-section-head p{font-size:14px;color:#999;margin-top:6px}
.pd-features{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pd-feature-card{padding:18px;border-radius:12px;border:1px solid #f0f0f5;display:flex;gap:14px;align-items:flex-start}
.pd-feature-c0{background:#f8f7ff}.pd-feature-c1{background:#fff5f8}.pd-feature-c2{background:#f0fdf4}.pd-feature-c3{background:#fffbeb}
.pd-feature-icon{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pd-feature-icon i{color:#fff;font-size:18px}
.pd-feature-body h4{font-size:14px;color:#1a1a2e;margin-bottom:6px}
.pd-feature-subs{display:flex;flex-wrap:wrap;gap:6px}
.pd-feature-subs span{font-size:12px;color:#888;background:#fff;padding:2px 8px;border-radius:6px;border:1px solid #f0f0f5}
.pd-about p{font-size:15px;color:#555;line-height:2}
.pd-highlights{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.pd-highlight-item{text-align:center;padding:24px 16px}
.pd-highlight-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:24px;color:#fff}
.pd-hl-blue{background:linear-gradient(135deg,#667eea,#764ba2)}
.pd-hl-green{background:linear-gradient(135deg,#43e97b,#38f9d7)}
.pd-hl-purple{background:linear-gradient(135deg,#a18cd1,#fbc2eb)}
.pd-hl-orange{background:linear-gradient(135deg,#fa709a,#fee140)}
.pd-highlight-item h4{font-size:15px;color:#1a1a2e;margin-bottom:6px}
.pd-highlight-item p{font-size:13px;color:#888}
.pd-scenarios{display:flex;flex-direction:column;gap:16px}
.pd-scenario-item{display:flex;align-items:center;gap:20px;padding:20px;border-radius:12px;background:#f8f9fe;border:1px solid #f0f0f5;transition:all .3s}
.pd-scenario-item:hover{background:#fff;box-shadow:0 4px 20px rgba(0,0,0,0.06)}
.pd-scenario-num{font-size:28px;font-weight:800;color:rgba(102,126,234,0.25);flex-shrink:0;width:50px}
.pd-scenario-body{flex:1}
.pd-scenario-body h4{font-size:16px;color:#1a1a2e;margin-bottom:4px}
.pd-scenario-body p{font-size:13px;color:#888}
.pd-scenario-icon{font-size:28px;color:rgba(102,126,234,0.3);flex-shrink:0}
.pd-pkgs{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.pd-pkg-card{border-radius:14px;border:1px solid #f0f0f5;padding:24px;text-align:center;transition:all .3s}
.pd-pkg-card:hover{border-color:rgba(102,126,234,0.3);box-shadow:0 6px 20px rgba(0,0,0,0.05)}
.pd-pkg-head h4{font-size:16px;color:#1a1a2e;margin-bottom:8px}
.pd-pkg-price{margin-bottom:8px}
.pd-pkg-free{font-size:24px;font-weight:800;color:#22c55e}
.pd-pkg-amount{font-size:26px;font-weight:800;color:#667eea}
.pd-pkg-price small{font-size:13px;color:#999}
.pd-pkg-tagline{font-size:12px;color:#999}
.pd-pkg-divider{height:1px;background:#f0f0f5;margin:14px 0}
.pd-pkg-features{display:flex;flex-direction:column;gap:8px;text-align:left}
.pd-pkg-features li{font-size:13px;color:#666;display:flex;align-items:center;gap:6px}
.pd-pkg-features li i{color:#667eea;font-size:14px}
.pd-pkg-btn{display:block;padding:10px;margin-top:16px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:8px;font-size:14px;font-weight:600;text-align:center;text-decoration:none;transition:all .3s}
.pd-pkg-btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(102,126,234,0.35)}
/* Detail sidebar */
.pd-side{display:flex;flex-direction:column;gap:24px;position:sticky;top:90px}
.pd-card{background:#fff;border-radius:16px;padding:28px;border:1px solid #f0f0f5}
.pd-card h3{font-size:16px;color:#1a1a2e;margin-bottom:18px;display:flex;align-items:center}
.pd-info-list{display:flex;flex-direction:column;gap:12px}
.pd-info-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;padding-bottom:10px;border-bottom:1px solid #f8f8f8}
.pd-info-row:last-child{border:none;padding-bottom:0}
.pd-info-row span{color:#999}
.pd-info-row b{color:#333;font-weight:600}
.pd-text-free{color:#22c55e;font-style:normal}
.pd-text-paid{color:#667eea;font-style:normal}
.pd-cta-card{text-align:center;background:linear-gradient(135deg,#f8f7ff,#fff5f8);border:none}
.pd-cta-icon-wrap{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.pd-cta-icon i{font-size:30px;color:#fff}
.pd-cta-card h3{justify-content:center;margin-bottom:8px}
.pd-cta-card p{font-size:13px;color:#888;margin-bottom:18px}
.pd-cta-tips{display:flex;flex-direction:column;gap:6px;margin-top:16px}
.pd-cta-tips span{font-size:12px;color:#888;display:flex;align-items:center;gap:6px;justify-content:center}
.pd-cta-tips i{color:#22c55e;font-size:14px}
.pd-recommend-list{display:flex;flex-direction:column;gap:12px}
.pd-recommend-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;transition:background .25s;text-decoration:none;color:inherit}
.pd-recommend-item:hover{background:#f8f9fe}
.pd-ri-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;flex-shrink:0}
.pd-ri-c0{background:linear-gradient(135deg,#667eea,#764ba2)}
.pd-ri-c1{background:linear-gradient(135deg,#f093fb,#f5576c)}
.pd-ri-c2{background:linear-gradient(135deg,#43e97b,#38f9d7)}
.pd-ri-c3{background:linear-gradient(135deg,#fa709a,#fee140)}
.pd-ri-info{flex:1;min-width:0}
.pd-ri-info h4{font-size:14px;color:#1a1a2e;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pd-ri-info span{font-size:12px;color:#999}
.pd-ri-arrow{color:#ccc;font-size:14px;flex-shrink:0;transition:color .2s}
.pd-recommend-item:hover .pd-ri-arrow{color:#667eea}
.pd-bottom-cta{padding:60px 24px;background:linear-gradient(135deg,#1a1a2e,#2d2b55);text-align:center}
.pd-bottom-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.pd-bottom-cta-text h2{font-size:24px;color:#fff;margin-bottom:8px}
.pd-bottom-cta-text p{font-size:14px;color:rgba(255,255,255,0.6)}
.pd-bottom-cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.pd-btn-white{padding:12px 24px;background:#fff;color:#667eea;font-weight:700;border-radius:8px;text-decoration:none;transition:all .3s}
.pd-btn-white:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,0.2)}
.pd-btn-ghost{padding:12px 24px;background:transparent;color:rgba(255,255,255,0.8);border:1px solid rgba(255,255,255,0.3);border-radius:8px;text-decoration:none;transition:all .3s}
.pd-btn-ghost:hover{background:rgba(255,255,255,0.08);color:#fff}

/* ── 18. 响应式 ─────────────────────────────────── */
@media screen and (max-width:1024px){
    .features-grid{grid-template-columns:repeat(2,1fr)}
    .agent-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .pd-body-grid{grid-template-columns:1fr}
    .pd-side{position:static}
}
@media screen and (max-width:768px){
    .hero{padding:140px 24px 80px;min-height:auto}
    .hero h1{font-size:34px}
    .hero-sub{font-size:16px}
    .stats-bar-inner{grid-template-columns:repeat(2,1fr);gap:16px;padding:30px 24px}
    .stat-number{font-size:28px}
    .section{padding:60px 20px}
    .section-head h2{font-size:26px}
    .section-head{margin-bottom:40px}
    .features-grid{grid-template-columns:1fr}
    .agent-grid{grid-template-columns:1fr}
    .pricing-grid{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr;gap:32px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .nav-toggle{display:block}
    .nav-links{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:16px;box-shadow:0 8px 24px rgba(0,0,0,0.1);border-radius:0 0 12px 12px}
    .nav-links.open{display:flex}
    .nav-links a{color:#333;padding:10px 16px;border-radius:8px}
    .nav-links a:hover,.nav-links a.active{color:#667eea;background:rgba(102,126,234,0.06)}
    .nav-actions{gap:6px}
    .nav-actions .btn{padding:8px 14px;font-size:12px}
    .cta-inner h2{font-size:24px}
    .pd-hero-main{flex-direction:column}
    .pd-hero-left{flex-direction:column;align-items:center;text-align:center}
    .pd-hero-meta{justify-content:center}
    .pd-features{grid-template-columns:1fr}
    .pd-highlights{grid-template-columns:1fr 1fr}
    .pd-bottom-cta-inner{flex-direction:column;text-align:center}
    .pd-pkgs{grid-template-columns:1fr}
    .back-to-top{bottom:20px;right:20px;width:40px;height:40px;font-size:18px}
}
@media screen and (max-width:480px){
    .hero h1{font-size:26px}
    .hero-actions{flex-direction:column;align-items:center}
    .stats-bar-inner{grid-template-columns:1fr 1fr}
    .pd-highlights{grid-template-columns:1fr}
    .nav-actions .btn-secondary{display:none}
}