/* =============================================
   小马拉大车 - 原创设计系统 CSS
   品牌：小马拉大车 | 域名：y48mrd.cn
   版本：2025
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --color-primary: #FF4B2B;
  --color-primary-dark: #cc3a20;
  --color-accent: #F5A623;
  --color-bg: #0D0D1A;
  --color-bg2: #16213E;
  --color-bg3: #1a2540;
  --color-card: #1E2A45;
  --color-border: #2D3748;
  --color-text: #FFFFFF;
  --color-text-muted: #A0AEC0;
  --color-text-dim: #718096;
  --color-success: #48BB78;
  --color-warning: #F6AD55;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(255,75,43,0.25);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --font-mono: 'SF Mono','Fira Code',monospace;
}

/* ---- Reset ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);background:var(--color-bg);color:var(--color-text);line-height:1.6;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,textarea,select{font-family:inherit}

/* ---- 干扰标签隐藏 ---- */
.ns-0563{display:none!important;visibility:hidden!important;height:0!important;width:0!important;overflow:hidden!important;position:absolute!important;left:-9999px!important}

/* ---- 滚动条 ---- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--color-bg2)}
::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:3px}

/* =============================================
   HEADER / NAVIGATION
   ============================================= */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(13,13,26,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}
.header-inner{max-width:1280px;margin:0 auto;padding:0 20px;display:flex;align-items:center;height:64px;gap:20px}
.site-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.site-logo img{width:40px;height:40px;object-fit:contain;border-radius:8px}
.site-logo .brand-name{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;flex:1}
.main-nav a{padding:6px 14px;border-radius:var(--radius-sm);font-size:0.9rem;color:var(--color-text-muted);transition:var(--transition);white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--color-text);background:var(--color-bg2)}
.main-nav a.active{color:var(--color-primary)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-join{padding:8px 20px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;border-radius:var(--radius-sm);font-size:0.875rem;font-weight:600;transition:var(--transition)}
.btn-join:hover{opacity:0.9;transform:translateY(-1px)}
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--color-text);border-radius:2px;transition:var(--transition)}

/* ---- 搜索框 ---- */
.search-bar-wrap{background:var(--color-bg2);border-bottom:1px solid var(--color-border);padding:10px 20px}
.search-bar-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:10px}
.search-form{display:flex;align-items:center;flex:1;max-width:600px;background:var(--color-bg3);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.search-form:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 2px rgba(255,75,43,0.15)}
.search-form input{flex:1;background:none;border:none;outline:none;padding:10px 16px;color:var(--color-text);font-size:0.9rem}
.search-form input::placeholder{color:var(--color-text-dim)}
.search-form button{padding:10px 18px;background:var(--color-primary);color:#fff;font-size:0.875rem;font-weight:600;transition:var(--transition)}
.search-form button:hover{background:var(--color-primary-dark)}
.search-tags{display:flex;gap:8px;flex-wrap:wrap}
.search-tag{padding:4px 12px;background:var(--color-card);border:1px solid var(--color-border);border-radius:20px;font-size:0.8rem;color:var(--color-text-muted);cursor:pointer;transition:var(--transition)}
.search-tag:hover{border-color:var(--color-primary);color:var(--color-primary)}

/* =============================================
   HERO SECTION
   ============================================= */
.hero{position:relative;min-height:560px;display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('../images/hero_banner.jpg');background-size:cover;background-position:center;filter:brightness(0.45)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,13,26,0.85) 0%,rgba(255,75,43,0.12) 100%)}
.hero-content{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:80px 20px}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:rgba(255,75,43,0.15);border:1px solid rgba(255,75,43,0.4);border-radius:20px;font-size:0.8rem;color:var(--color-primary);margin-bottom:20px}
.hero-badge::before{content:'▶';font-size:0.7rem}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.15;margin-bottom:16px;max-width:700px}
.hero h1 em{font-style:normal;color:var(--color-primary)}
.hero-desc{font-size:1.1rem;color:var(--color-text-muted);max-width:560px;margin-bottom:32px;line-height:1.7}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;border-radius:var(--radius-md);font-size:1rem;font-weight:700;transition:var(--transition)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn-outline{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:transparent;border:2px solid var(--color-border);color:var(--color-text);border-radius:var(--radius-md);font-size:1rem;font-weight:600;transition:var(--transition)}
.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}
.hero-stats{display:flex;gap:32px;margin-top:48px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:var(--color-primary)}
.hero-stat .label{font-size:0.8rem;color:var(--color-text-muted);margin-top:2px}

/* =============================================
   SECTION COMMON
   ============================================= */
.section{padding:64px 20px}
.section-inner{max-width:1280px;margin:0 auto}
.section-header{text-align:center;margin-bottom:48px}
.section-tag{display:inline-block;padding:4px 14px;background:rgba(255,75,43,0.12);border:1px solid rgba(255,75,43,0.3);border-radius:20px;font-size:0.8rem;color:var(--color-primary);margin-bottom:12px;letter-spacing:0.05em}
.section-title{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;margin-bottom:12px}
.section-title em{font-style:normal;color:var(--color-primary)}
.section-desc{font-size:1rem;color:var(--color-text-muted);max-width:560px;margin:0 auto;line-height:1.7}
.section-alt{background:var(--color-bg2)}

/* =============================================
   VIDEO CARDS
   ============================================= */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.video-card{background:var(--color-card);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--color-border);transition:var(--transition);cursor:pointer}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,75,43,0.4)}
.video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#000}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.3);opacity:0;transition:var(--transition)}
.video-card:hover .play-btn{opacity:1}
.play-btn-icon{width:52px;height:52px;background:rgba(255,75,43,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.play-btn-icon::after{content:'';border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,0.75);color:#fff;font-size:0.75rem;padding:2px 8px;border-radius:4px}
.video-badge{position:absolute;top:8px;left:8px;background:var(--color-primary);color:#fff;font-size:0.7rem;padding:2px 8px;border-radius:4px;font-weight:600}
.video-info{padding:14px}
.video-title{font-size:0.95rem;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:12px;font-size:0.8rem;color:var(--color-text-muted)}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.video-tag{padding:2px 8px;background:rgba(255,75,43,0.1);border:1px solid rgba(255,75,43,0.2);border-radius:4px;font-size:0.72rem;color:var(--color-primary)}

/* =============================================
   CATEGORY TABS
   ============================================= */
.cat-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.cat-tab{padding:8px 18px;background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:0.875rem;color:var(--color-text-muted);cursor:pointer;transition:var(--transition)}
.cat-tab:hover,.cat-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}

/* =============================================
   EXPERT CARDS
   ============================================= */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.expert-card{background:var(--color-card);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--color-border);transition:var(--transition);text-align:center;padding:28px 20px}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.expert-avatar{width:90px;height:90px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid var(--color-primary)}
.expert-name{font-size:1.1rem;font-weight:700;margin-bottom:4px}
.expert-role{font-size:0.85rem;color:var(--color-primary);margin-bottom:8px}
.expert-desc{font-size:0.85rem;color:var(--color-text-muted);line-height:1.6;margin-bottom:16px}
.expert-awards{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:16px}
.expert-award{padding:3px 10px;background:rgba(245,166,35,0.1);border:1px solid rgba(245,166,35,0.3);border-radius:4px;font-size:0.72rem;color:var(--color-accent)}
.expert-actions{display:flex;gap:8px;justify-content:center}
.btn-sm{padding:7px 16px;border-radius:var(--radius-sm);font-size:0.8rem;font-weight:600;transition:var(--transition)}
.btn-sm-primary{background:var(--color-primary);color:#fff}
.btn-sm-primary:hover{background:var(--color-primary-dark)}
.btn-sm-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text-muted)}
.btn-sm-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}

/* =============================================
   AI SECTION
   ============================================= */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.ai-card{background:var(--color-card);border-radius:var(--radius-md);padding:28px;border:1px solid var(--color-border);transition:var(--transition);position:relative;overflow:hidden}
.ai-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary),var(--color-accent))}
.ai-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.ai-icon{width:52px;height:52px;background:rgba(255,75,43,0.12);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:16px}
.ai-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.ai-card p{font-size:0.875rem;color:var(--color-text-muted);line-height:1.7}
.ai-features{display:flex;flex-direction:column;gap:6px;margin-top:14px}
.ai-feature{display:flex;align-items:center;gap:8px;font-size:0.82rem;color:var(--color-text-muted)}
.ai-feature::before{content:'✓';color:var(--color-success);font-weight:700;flex-shrink:0}

/* =============================================
   PARTNER WALL
   ============================================= */
.partner-wall{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;align-items:center}
.partner-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:14px 24px;font-size:0.9rem;font-weight:600;color:var(--color-text-muted);transition:var(--transition);cursor:pointer}
.partner-item:hover{border-color:var(--color-primary);color:var(--color-primary)}

/* =============================================
   HOW TO JOIN
   ============================================= */
.join-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;margin-bottom:40px}
.join-step{background:var(--color-card);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border);text-align:center;position:relative}
.join-step-num{width:40px;height:40px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1rem;margin:0 auto 14px}
.join-step h4{font-size:0.95rem;font-weight:700;margin-bottom:8px}
.join-step p{font-size:0.82rem;color:var(--color-text-muted);line-height:1.6}

/* =============================================
   FAQ
   ============================================= */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:800px;margin:0 auto}
.faq-item{background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}
.faq-q{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;cursor:pointer;font-weight:600;font-size:0.95rem;transition:var(--transition)}
.faq-q:hover{color:var(--color-primary)}
.faq-q .icon{width:24px;height:24px;background:rgba(255,75,43,0.1);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.8rem;color:var(--color-primary);flex-shrink:0;transition:var(--transition)}
.faq-item.open .faq-q .icon{transform:rotate(45deg);background:var(--color-primary);color:#fff}
.faq-a{display:none;padding:0 20px 18px;font-size:0.875rem;color:var(--color-text-muted);line-height:1.7}
.faq-item.open .faq-a{display:block}

/* =============================================
   REVIEWS
   ============================================= */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:var(--color-card);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border);transition:var(--transition)}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
.review-stars{color:var(--color-accent);font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-text{font-size:0.875rem;color:var(--color-text-muted);line-height:1.7;margin-bottom:16px}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.9rem;flex-shrink:0}
.review-name{font-size:0.875rem;font-weight:600}
.review-date{font-size:0.75rem;color:var(--color-text-dim)}

/* =============================================
   CONTACT
   ============================================= */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info h3{font-size:1.3rem;font-weight:700;margin-bottom:20px}
.contact-item{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start}
.contact-icon{width:44px;height:44px;background:rgba(255,75,43,0.1);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.contact-item-text .label{font-size:0.8rem;color:var(--color-text-muted);margin-bottom:2px}
.contact-item-text .value{font-size:0.95rem;font-weight:600}
.qr-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:24px}
.qr-item{text-align:center}
.qr-item img{width:120px;height:120px;border-radius:var(--radius-sm);border:2px solid var(--color-border)}
.qr-item p{font-size:0.78rem;color:var(--color-text-muted);margin-top:6px}
.community-entries{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.entry-card{background:var(--color-bg3);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:16px;text-align:center;transition:var(--transition)}
.entry-card:hover{border-color:var(--color-primary)}
.entry-card .entry-icon{font-size:1.5rem;margin-bottom:8px}
.entry-card .entry-name{font-size:0.85rem;font-weight:600;margin-bottom:4px}
.entry-card .entry-desc{font-size:0.75rem;color:var(--color-text-muted)}

/* =============================================
   SOCIAL SHARE
   ============================================= */
.share-bar{background:var(--color-bg2);border-top:1px solid var(--color-border);padding:16px 20px}
.share-bar-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.share-label{font-size:0.875rem;color:var(--color-text-muted);flex-shrink:0}
.share-btns{display:flex;gap:8px;flex-wrap:wrap}
.share-btn{display:flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-sm);font-size:0.8rem;font-weight:600;transition:var(--transition);border:1px solid var(--color-border);color:var(--color-text-muted)}
.share-btn:hover{transform:translateY(-1px)}
.share-btn.wechat:hover{background:#07C160;border-color:#07C160;color:#fff}
.share-btn.weibo:hover{background:#E6162D;border-color:#E6162D;color:#fff}
.share-btn.douyin:hover{background:#010101;border-color:#69C9D0;color:#69C9D0}
.share-btn.bilibili:hover{background:#00A1D6;border-color:#00A1D6;color:#fff}

/* =============================================
   FOOTER
   ============================================= */
.site-footer{background:var(--color-bg2);border-top:1px solid var(--color-border);padding:48px 20px 24px}
.footer-inner{max-width:1280px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .brand-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-logo img{width:36px;height:36px;object-fit:contain}
.footer-brand .brand-logo span{font-size:1.1rem;font-weight:700;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.footer-brand p{font-size:0.85rem;color:var(--color-text-muted);line-height:1.7;max-width:280px}
.footer-col h4{font-size:0.95rem;font-weight:700;margin-bottom:16px;color:var(--color-text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:0.85rem;color:var(--color-text-muted);transition:var(--transition)}
.footer-col ul li a:hover{color:var(--color-primary)}
.footer-bottom{border-top:1px solid var(--color-border);padding-top:24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px}
.footer-copy{font-size:0.82rem;color:var(--color-text-dim)}
.footer-links{display:flex;gap:16px}
.footer-links a{font-size:0.82rem;color:var(--color-text-dim);transition:var(--transition)}
.footer-links a:hover{color:var(--color-primary)}
.update-time{font-size:0.78rem;color:var(--color-text-dim)}

/* =============================================
   BREADCRUMB
   ============================================= */
.breadcrumb{padding:12px 20px;background:var(--color-bg2);border-bottom:1px solid var(--color-border)}
.breadcrumb-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:6px;font-size:0.82rem;color:var(--color-text-muted)}
.breadcrumb a{color:var(--color-text-muted);transition:var(--transition)}
.breadcrumb a:hover{color:var(--color-primary)}
.breadcrumb .sep{color:var(--color-border)}
.breadcrumb .current{color:var(--color-text)}

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */
.page-hero{background:linear-gradient(135deg,var(--color-bg2) 0%,var(--color-bg3) 100%);padding:48px 20px;border-bottom:1px solid var(--color-border)}
.page-hero-inner{max-width:1280px;margin:0 auto}
.page-hero h1{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;margin-bottom:10px}
.page-hero p{font-size:1rem;color:var(--color-text-muted);max-width:600px}

/* =============================================
   STATS BAR
   ============================================= */
.stats-bar{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));padding:24px 20px}
.stats-bar-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item .num{font-size:2rem;font-weight:800;color:#fff}
.stat-item .label{font-size:0.82rem;color:rgba(255,255,255,0.8);margin-top:2px}

/* =============================================
   WORKSHOP / STORE
   ============================================= */
.store-card{background:var(--color-card);border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--color-border)}
.store-img{aspect-ratio:16/9;overflow:hidden}
.store-img img{width:100%;height:100%;object-fit:cover}
.store-body{padding:24px}
.store-body h3{font-size:1.1rem;font-weight:700;margin-bottom:12px}
.store-info{display:flex;flex-direction:column;gap:10px}
.store-row{display:flex;gap:10px;font-size:0.875rem}
.store-row .key{color:var(--color-text-muted);flex-shrink:0;min-width:60px}
.store-row .val{color:var(--color-text)}

/* =============================================
   TOOLS
   ============================================= */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.tool-card{background:var(--color-card);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border);transition:var(--transition)}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,75,43,0.4)}
.tool-icon{font-size:2rem;margin-bottom:14px}
.tool-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.tool-card p{font-size:0.85rem;color:var(--color-text-muted);line-height:1.6;margin-bottom:14px}
.tool-card .btn-use{display:inline-block;padding:8px 18px;background:rgba(255,75,43,0.12);border:1px solid rgba(255,75,43,0.3);border-radius:var(--radius-sm);font-size:0.82rem;color:var(--color-primary);transition:var(--transition)}
.tool-card .btn-use:hover{background:var(--color-primary);color:#fff}

/* =============================================
   COMMUNITY
   ============================================= */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.post-card{background:var(--color-card);border-radius:var(--radius-md);padding:20px;border:1px solid var(--color-border);transition:var(--transition)}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
.post-header{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.post-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.85rem;flex-shrink:0}
.post-author{font-size:0.875rem;font-weight:600}
.post-time{font-size:0.75rem;color:var(--color-text-dim)}
.post-title{font-size:0.95rem;font-weight:600;margin-bottom:8px;line-height:1.4}
.post-excerpt{font-size:0.85rem;color:var(--color-text-muted);line-height:1.6;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-footer{display:flex;align-items:center;gap:14px;font-size:0.8rem;color:var(--color-text-dim)}
.post-footer span{display:flex;align-items:center;gap:4px}

/* =============================================
   PAGINATION
   ============================================= */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.page-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);background:var(--color-card);border:1px solid var(--color-border);font-size:0.875rem;color:var(--color-text-muted);cursor:pointer;transition:var(--transition)}
.page-btn:hover,.page-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}

/* =============================================
   MOBILE MENU
   ============================================= */
.mobile-menu{display:none;position:fixed;top:64px;left:0;right:0;background:var(--color-bg2);border-bottom:1px solid var(--color-border);z-index:999;padding:16px 20px;flex-direction:column;gap:4px}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 16px;border-radius:var(--radius-sm);color:var(--color-text-muted);font-size:0.95rem;transition:var(--transition)}
.mobile-menu a:hover{background:var(--color-card);color:var(--color-text)}

/* =============================================
   RESPONSIVE
   ============================================= */
@media(max-width:1024px){
  .footer-top{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .stats-bar-inner{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .main-nav,.header-actions .btn-join{display:none}
  .hamburger{display:flex}
  .hero{min-height:420px}
  .hero-content{padding:60px 20px}
  .hero-stats{gap:20px}
  .footer-top{grid-template-columns:1fr}
  .community-entries{grid-template-columns:1fr}
  .search-tags{display:none}
  .stats-bar-inner{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-outline{width:100%;justify-content:center}
  .stats-bar-inner{grid-template-columns:1fr 1fr}
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.6}}
.animate-fade-up{animation:fadeInUp 0.6s ease both}
.live-dot{display:inline-block;width:8px;height:8px;background:var(--color-primary);border-radius:50%;animation:pulse 1.5s infinite}

/* =============================================
   UTILITY
   ============================================= */
.text-primary{color:var(--color-primary)}
.text-accent{color:var(--color-accent)}
.text-muted{color:var(--color-text-muted)}
.text-center{text-align:center}
.mt-4{margin-top:16px}
.mt-8{margin-top:32px}
.mb-4{margin-bottom:16px}
.flex{display:flex}
.flex-center{display:flex;align-items:center;justify-content:center}
.gap-2{gap:8px}
.gap-4{gap:16px}
.hidden{display:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* =============================================
   ADDITIONAL STYLES
   ============================================= */
.tool-card h2{font-size:1rem;font-weight:700;margin-bottom:8px}
.ai-features li{display:flex;align-items:center;gap:8px;font-size:0.82rem;color:var(--color-text-muted);padding:3px 0}
.ai-features li::before{content:'✓';color:#48BB78;font-weight:700;flex-shrink:0}
.post-grid{display:flex;flex-direction:column;gap:16px}
.post-grid .post-card{width:100%}
.hero-content h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;line-height:1.15;margin-bottom:16px;max-width:700px}
.hero-content h1 em{font-style:normal;color:var(--color-primary)}

/* =============================================
   TOP BAR
   ============================================= */
.top-bar{background:linear-gradient(90deg,var(--color-primary),var(--color-accent));padding:6px 20px;font-size:0.78rem;color:#fff}
.top-bar-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:10px}
.top-bar-links{display:flex;gap:12px}
.top-bar-links a{color:rgba(255,255,255,0.85);text-decoration:underline;transition:var(--transition)}
.top-bar-links a:hover{color:#fff}

/* =============================================
   BREADCRUMB (ol-based)
   ============================================= */
.breadcrumb ol{display:flex;align-items:center;gap:6px;flex-wrap:wrap;list-style:none}
.breadcrumb ol li{display:flex;align-items:center;gap:6px}

/* =============================================
   EXPERT CARDS
   ============================================= */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.expert-card{background:var(--color-card);border-radius:var(--radius-md);padding:28px 20px;border:1px solid var(--color-border);text-align:center;transition:var(--transition)}
.expert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,75,43,0.4)}
.expert-avatar{width:90px;height:90px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid var(--color-primary)}
.expert-name{font-size:1.1rem;font-weight:700;margin-bottom:4px}
.expert-role{font-size:0.8rem;color:var(--color-primary);margin-bottom:12px}
.expert-desc{font-size:0.82rem;color:var(--color-text-muted);line-height:1.6;margin-bottom:14px}
.expert-awards{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;align-items:flex-start}
.expert-award{font-size:0.75rem;color:var(--color-text-muted);background:var(--color-bg2);padding:3px 8px;border-radius:4px;text-align:left}
.expert-actions{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.btn-sm{padding:7px 14px;border-radius:var(--radius-sm);font-size:0.8rem;font-weight:600;transition:var(--transition);cursor:pointer;border:none}
.btn-sm-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff}
.btn-sm-primary:hover{opacity:0.9}
.btn-sm-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text-muted)}
.btn-sm-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}

/* =============================================
   PARTNER WALL
   ============================================= */
.partner-wall{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:16px;margin-top:32px}
.partner-item{transition:var(--transition)}
.partner-item:hover{transform:translateY(-2px)}

/* =============================================
   JOIN STEPS
   ============================================= */
.join-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;margin-top:32px}
.join-step{background:var(--color-card);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border);text-align:center;transition:var(--transition)}
.join-step:hover{border-color:rgba(255,75,43,0.4)}
.join-step-num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;font-weight:800;font-size:1.1rem;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.join-step h4{font-size:0.95rem;font-weight:700;margin-bottom:8px}
.join-step p{font-size:0.82rem;color:var(--color-text-muted);line-height:1.6}

/* =============================================
   REVIEW CARDS
   ============================================= */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:var(--color-card);border-radius:var(--radius-md);padding:24px;border:1px solid var(--color-border);transition:var(--transition)}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
.review-stars{color:var(--color-accent);font-size:1rem;margin-bottom:12px}
.review-text{font-size:0.875rem;color:var(--color-text-muted);line-height:1.7;margin-bottom:16px}
.review-author{display:flex;align-items:center;gap:10px}
.review-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.85rem;flex-shrink:0;color:#fff}
.review-name{font-size:0.875rem;font-weight:600}
.review-date{font-size:0.75rem;color:var(--color-text-dim)}

/* =============================================
   CONTACT GRID
   ============================================= */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.community-entries{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.entry-card{background:var(--color-card);border-radius:var(--radius-md);padding:16px;border:1px solid var(--color-border);text-align:center;transition:var(--transition)}
.entry-card:hover{border-color:rgba(255,75,43,0.4)}
.entry-icon{font-size:1.5rem;margin-bottom:6px}
.entry-name{font-size:0.875rem;font-weight:700;margin-bottom:4px}
.entry-desc{font-size:0.78rem;color:var(--color-text-muted)}
.qr-row{display:flex;gap:20px;flex-wrap:wrap;margin-top:16px}
.qr-item{text-align:center}
.qr-item img{border-radius:8px;border:1px solid var(--color-border)}
.qr-item p{font-size:0.75rem;color:var(--color-text-muted);margin-top:6px}

/* =============================================
   SEARCH MODAL
   ============================================= */
.search-modal{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.8);align-items:flex-start;justify-content:center;padding-top:80px}
.search-modal.open{display:flex}
.search-modal-inner{background:var(--color-bg2);border-radius:var(--radius-md);padding:24px;width:100%;max-width:600px;border:1px solid var(--color-border)}
.search-modal-inner input{width:100%;background:var(--color-bg3);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:12px 16px;color:var(--color-text);font-size:1rem;outline:none}
.search-modal-inner input:focus{border-color:var(--color-primary)}
.search-modal-tip{font-size:0.8rem;color:var(--color-text-dim);margin-top:10px}

/* =============================================
   FAQ ENHANCED
   ============================================= */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--color-card);border-radius:var(--radius-md);margin-bottom:12px;border:1px solid var(--color-border);overflow:hidden;transition:var(--transition)}
.faq-item.open{border-color:rgba(255,75,43,0.4)}
.faq-q{padding:18px 20px;font-size:0.95rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;transition:var(--transition)}
.faq-q:hover{color:var(--color-primary)}
.faq-q .icon{font-size:1.1rem;flex-shrink:0;transition:var(--transition)}
.faq-item.open .faq-q .icon{transform:rotate(45deg);color:var(--color-primary)}
.faq-a{display:none;padding:0 20px 18px;font-size:0.875rem;color:var(--color-text-muted);line-height:1.7}
.faq-item.open .faq-a{display:block}

/* =============================================
   CAT TABS
   ============================================= */
.cat-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.cat-tab{padding:8px 18px;border-radius:20px;background:var(--color-card);border:1px solid var(--color-border);font-size:0.85rem;color:var(--color-text-muted);cursor:pointer;transition:var(--transition)}
.cat-tab:hover,.cat-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}

/* =============================================
   SHARE BAR
   ============================================= */
.share-bar{background:var(--color-bg2);border-top:1px solid var(--color-border);padding:16px 20px}
.share-bar-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.share-label{font-size:0.85rem;color:var(--color-text-muted)}
.share-btns{display:flex;gap:8px;flex-wrap:wrap}
.share-btn{padding:7px 16px;border-radius:20px;font-size:0.82rem;font-weight:600;cursor:pointer;transition:var(--transition);border:1px solid var(--color-border);color:var(--color-text-muted)}
.share-btn:hover{transform:translateY(-1px)}
.share-btn.wechat:hover{background:#07C160;border-color:#07C160;color:#fff}
.share-btn.weibo:hover{background:#E6162D;border-color:#E6162D;color:#fff}
.share-btn.douyin:hover{background:#000;border-color:#000;color:#fff}
.share-btn.bilibili:hover{background:#00A1D6;border-color:#00A1D6;color:#fff}

/* =============================================
   RESPONSIVE ADDITIONS
   ============================================= */
@media(max-width:1024px){
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .partner-wall{grid-template-columns:repeat(4,1fr)}
  .join-steps{grid-template-columns:1fr 1fr}
  .top-bar-links{display:none}
  .community-entries{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .join-steps{grid-template-columns:1fr}
  .partner-wall{grid-template-columns:repeat(3,1fr)}
  .qr-row{justify-content:center}
  .contact-grid{grid-template-columns:1fr}
}