/* ============================================
   海角网 - 植物视频社区 全站样式
   品牌色: #0f2e1f(深绿) #c8a951(金) #f7f9f5(浅绿白)
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",Arial,sans-serif;color:#2a3a2e;background:#f7f9f5;line-height:1.75}
a{text-decoration:none;color:inherit;transition:color .3s}
a:hover{color:#c8a951}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.site-header{background:linear-gradient(135deg,#0f2e1f,#1a4a30);position:sticky;top:0;z-index:1000;box-shadow:0 2px 16px rgba(0,0,0,.25)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0 20px;max-width:1200px;margin:0 auto;height:64px}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:40px;height:40px;border-radius:50%;border:2px solid #c8a951}
.logo-wrap .brand-name{color:#f0edd4;font-size:1.3rem;font-weight:700;letter-spacing:2px}
.logo-wrap .brand-name span{color:#c8a951}
.main-nav{display:flex;gap:0}
.main-nav a{color:#b8c9b8;padding:20px 15px;font-size:.92rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#f0edd4;background:rgba(200,169,81,.12)}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:3px;background:#c8a951;transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:55%}
.mobile-toggle{display:none;color:#f0edd4;font-size:1.5rem;cursor:pointer;background:none;border:none}

/* 搜索栏 */
.search-bar{background:#0a2116;padding:10px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;width:100%;max-width:560px;border-radius:28px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.2)}
.search-box input{flex:1;padding:10px 20px;border:none;font-size:.92rem;background:#fff;outline:none;color:#2a3a2e}
.search-box button{padding:10px 26px;background:#c8a951;color:#fff;border:none;font-size:.92rem;cursor:pointer;transition:background .3s;font-weight:600}
.search-box button:hover{background:#b0922e}

/* 英雄横幅 */
.hero-section{position:relative;height:540px;overflow:hidden;background:#0f2e1f}
.hero-section img{width:100%;height:100%;object-fit:cover;opacity:.65}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:linear-gradient(to bottom,rgba(15,46,31,.2),rgba(15,46,31,.85))}
.hero-overlay h1{color:#f0edd4;font-size:2.6rem;margin-bottom:14px;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.hero-overlay h1 span{color:#c8a951}
.hero-overlay p{color:#b8c9b8;font-size:1.1rem;max-width:700px;margin-bottom:22px;line-height:1.8}
.hero-btn{display:inline-block;padding:12px 34px;background:#c8a951;color:#0f2e1f;border-radius:28px;font-size:1rem;font-weight:700;transition:all .3s;box-shadow:0 4px 18px rgba(200,169,81,.35)}
.hero-btn:hover{background:#b0922e;transform:translateY(-2px);color:#0f2e1f}

/* 面包屑 */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#7a8a7e}
.breadcrumb a{color:#c8a951}
.breadcrumb span{margin:0 6px;color:#aab8aa}

/* 区块通用 */
.section{padding:55px 0}
.section-alt{background:#fff}
.section-dark{background:#0f2e1f;color:#f0edd4}
.section-title{text-align:center;margin-bottom:38px}
.section-title h2{font-size:1.85rem;color:#0f2e1f;margin-bottom:8px;position:relative;display:inline-block}
.section-dark .section-title h2{color:#f0edd4}
.section-title h2::after{content:'';display:block;width:45px;height:3px;background:#c8a951;margin:10px auto 0}
.section-title p{color:#6a7a6e;font-size:.95rem;margin-top:6px}
.section-dark .section-title p{color:#8a9a8e}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(275px,1fr));gap:22px}
.video-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 3px 14px rgba(0,0,0,.07);transition:all .35s;cursor:pointer;border:1px solid #e8ede8}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 28px rgba(0,0,0,.13);border-color:#c8a951}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#1a3a25}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.06)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(200,169,81,.92);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none}
.play-btn::after{content:'';border-left:18px solid #0f2e1f;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:3px}
.video-card:hover .play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.72);color:#fff;padding:2px 8px;border-radius:4px;font-size:.76rem}
.video-info{padding:14px 16px}
.video-info h3{font-size:.98rem;color:#0f2e1f;margin-bottom:5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:12px;font-size:.78rem;color:#8a9a8e}
.video-tags{display:flex;gap:5px;margin-top:7px;flex-wrap:wrap}
.video-tags span{background:#eef3ee;color:#5a6a5e;padding:2px 10px;border-radius:12px;font-size:.73rem}

/* 专家卡片 */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px}
.expert-card{background:#fff;border-radius:14px;padding:26px;text-align:center;box-shadow:0 3px 14px rgba(0,0,0,.07);transition:all .35s;border:1px solid #e8ede8}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1);border-color:#c8a951}
.expert-card img{width:110px;height:110px;border-radius:50%;margin:0 auto 14px;object-fit:cover;border:3px solid #c8a951}
.expert-card h3{font-size:1.1rem;color:#0f2e1f;margin-bottom:4px}
.expert-card .role{color:#c8a951;font-size:.88rem;margin-bottom:10px}
.expert-card p{color:#5a6a5e;font-size:.88rem;line-height:1.65;margin-bottom:12px}
.expert-btns{display:flex;gap:10px;justify-content:center}
.expert-btns a{padding:7px 18px;border-radius:20px;font-size:.83rem;transition:all .3s}
.btn-primary{background:#c8a951;color:#0f2e1f;font-weight:600}
.btn-primary:hover{background:#b0922e;color:#0f2e1f}
.btn-outline{border:1px solid #c8a951;color:#c8a951}
.btn-outline:hover{background:#c8a951;color:#0f2e1f}

/* FAQ */
.faq-list{max-width:780px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:10px;box-shadow:0 2px 8px rgba(0,0,0,.05);overflow:hidden;border:1px solid #e8ede8}
.faq-question{padding:16px 22px;font-size:.98rem;font-weight:600;color:#0f2e1f;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:#f2f6f2}
.faq-question::after{content:'+';font-size:1.3rem;color:#c8a951;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{padding:0 22px;max-height:0;overflow:hidden;transition:all .4s;color:#4a5a4e;font-size:.92rem;line-height:1.7}
.faq-item.active .faq-answer{padding:0 22px 16px;max-height:500px}

/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.review-card{background:#fff;border-radius:12px;padding:22px;box-shadow:0 3px 10px rgba(0,0,0,.05);border:1px solid #e8ede8}
.review-card .stars{color:#c8a951;font-size:1.05rem;margin-bottom:7px}
.review-card p{color:#4a5a4e;font-size:.9rem;line-height:1.65;margin-bottom:10px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.reviewer-avatar{width:34px;height:34px;border-radius:50%;background:#c8a951;color:#0f2e1f;display:flex;align-items:center;justify-content:center;font-size:.82rem;font-weight:700}
.reviewer-info .name{font-size:.86rem;color:#0f2e1f;font-weight:600}
.reviewer-info .date{font-size:.76rem;color:#8a9a8e}

/* 合作品牌墙 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:24px;align-items:center}
.brand-wall .brand-item{width:135px;height:75px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.05);padding:10px;font-size:.95rem;color:#4a5a4e;font-weight:700;transition:all .3s;border:1px solid #e8ede8}
.brand-wall .brand-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.1);transform:scale(1.05);border-color:#c8a951}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.contact-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 3px 10px rgba(0,0,0,.05);border:1px solid #e8ede8}
.contact-card h3{color:#0f2e1f;font-size:1.05rem;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid #c8a951}
.contact-card .info-row{display:flex;align-items:flex-start;gap:8px;margin-bottom:8px;font-size:.9rem;color:#4a5a4e}
.contact-card .info-row strong{color:#0f2e1f;min-width:65px}

/* 社交分享 */
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;padding:18px 0}
.share-btn{display:inline-flex;align-items:center;gap:5px;padding:9px 20px;border-radius:22px;font-size:.88rem;color:#fff;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#00a1d6}

/* How-To 指南 */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:22px;margin-top:28px}
.howto-step{text-align:center;padding:22px;background:#fff;border-radius:12px;box-shadow:0 3px 10px rgba(0,0,0,.05);border:1px solid #e8ede8}
.step-num{width:44px;height:44px;background:#c8a951;color:#0f2e1f;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;margin:0 auto 12px}
.howto-step h4{color:#0f2e1f;margin-bottom:7px;font-size:.95rem}
.howto-step p{color:#5a6a5e;font-size:.88rem}

/* AI赋能区块 */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px}
.ai-card{background:linear-gradient(135deg,#0f2e1f 0%,#1a4a30 100%);border-radius:14px;padding:28px;color:#f0edd4;transition:all .35s}
.ai-card:hover{transform:translateY(-4px);box-shadow:0 8px 28px rgba(15,46,31,.4)}
.ai-card h3{font-size:1.1rem;margin-bottom:8px;color:#c8a951}
.ai-card p{color:#8aaa8e;font-size:.9rem;line-height:1.65}

/* 社区分类 */
.community-cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px}
.cat-card{background:#fff;border-radius:12px;padding:18px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:all .3s;border:1px solid #e8ede8}
.cat-card:hover{border-color:#c8a951;transform:translateY(-3px);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.cat-card .cat-icon{font-size:1.8rem;margin-bottom:7px}
.cat-card h4{color:#0f2e1f;font-size:.9rem;margin-bottom:3px}
.cat-card p{color:#8a9a8e;font-size:.78rem}

/* 页脚 */
.site-footer{background:#081a10;color:#6a8a72;padding:45px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:28px;padding-bottom:28px;border-bottom:1px solid #152a1c}
.footer-col h4{color:#f0edd4;font-size:.98rem;margin-bottom:12px;position:relative;padding-bottom:7px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:28px;height:2px;background:#c8a951}
.footer-col p,.footer-col a{font-size:.86rem;color:#6a8a72;display:block;margin-bottom:5px;transition:color .3s}
.footer-col a:hover{color:#c8a951}
.footer-col img{border-radius:8px;margin-top:5px}
.footer-qr{display:flex;gap:14px;margin-top:8px}
.footer-qr div{text-align:center}
.footer-qr img{width:100px;height:100px}
.footer-qr p{font-size:.76rem;margin-top:3px;color:#6a8a72}
.footer-bottom{text-align:center;padding:18px 0;font-size:.8rem;color:#3a5a42}

/* MCP前端占位 */
.mcp-widget{background:#152a1c;border-radius:8px;padding:14px;margin-top:14px;text-align:center;font-size:.8rem;color:#3a5a42;border:1px dashed #1e3a28}

/* 内页通用 */
.page-header{background:linear-gradient(135deg,#0f2e1f,#1a4a30);padding:55px 0 38px;text-align:center;color:#f0edd4}
.page-header h1{font-size:2.1rem;margin-bottom:7px}
.page-header h1 span{color:#c8a951}
.page-header p{color:#8aaa8e;font-size:.98rem}
.page-content{padding:38px 0 55px}

/* 标签云 */
.tag-cloud{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin-top:18px}
.tag-cloud a{background:#eef3ee;color:#4a5a4e;padding:5px 14px;border-radius:18px;font-size:.83rem;transition:all .3s}
.tag-cloud a:hover{background:#c8a951;color:#0f2e1f}

/* 干扰标签隐藏 */
.jrb{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* 响应式 */
@media(max-width:768px){
  .header-inner{padding:0 12px}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#0f2e1f;flex-direction:column;box-shadow:0 8px 20px rgba(0,0,0,.3)}
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 18px;border-bottom:1px solid #1a3a25}
  .mobile-toggle{display:block}
  .hero-section{height:340px}
  .hero-overlay h1{font-size:1.7rem}
  .hero-overlay p{font-size:.92rem;padding:0 18px}
  .section{padding:36px 0}
  .section-title h2{font-size:1.45rem}
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .community-cats{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr}
}
@media(max-width:480px){
  .hero-section{height:260px}
  .hero-overlay h1{font-size:1.35rem}
  .search-box{margin:0 10px}
  .community-cats{grid-template-columns:1fr}
}