/* ============================================
   日本三级 - 原创样式表
   配色：深紫#2D1B4E | 玫瑰金#E8A87C | 暗夜#0A0A14 | 柔粉#F5E6D3 | 星光紫#6B4C9A
   ============================================ */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#E8E0F0;background:#0A0A14;line-height:1.8;overflow-x:hidden}
a{color:#E8A87C;text-decoration:none;transition:color .3s}
a:hover{color:#F5D0B0}
img{max-width:100%;height:auto;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 20px}

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

/* ===== 顶部导航 ===== */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,10,20,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(107,76,154,.25);transition:all .3s}
.site-header.scrolled{background:rgba(10,10,20,.98);box-shadow:0 2px 20px rgba(45,27,78,.4)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:42px;width:auto}
.nav-logo span{font-size:1.3rem;font-weight:700;color:#E8A87C;letter-spacing:1px}
.nav-menu{display:flex;list-style:none;gap:6px}
.nav-menu li a{display:block;padding:8px 16px;font-size:.95rem;color:#C8BFD6;border-radius:6px;transition:all .3s}
.nav-menu li a:hover,.nav-menu li a.active{color:#E8A87C;background:rgba(232,168,124,.1)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:#E8A87C;border-radius:2px;transition:all .3s}

/* 搜索框 */
.search-bar{background:rgba(45,27,78,.35);border-bottom:1px solid rgba(107,76,154,.2);padding:12px 0}
.search-bar .container{display:flex;justify-content:center}
.search-box{position:relative;width:100%;max-width:580px}
.search-box input{width:100%;padding:10px 48px 10px 20px;background:rgba(232,168,124,.08);border:1px solid rgba(232,168,124,.25);border-radius:24px;color:#E8E0F0;font-size:.95rem;outline:none;transition:all .3s}
.search-box input:focus{border-color:#E8A87C;box-shadow:0 0 12px rgba(232,168,124,.2)}
.search-box input::placeholder{color:#8B7FA0}
.search-box button{position:absolute;right:4px;top:50%;transform:translateY(-50%);background:#E8A87C;border:none;color:#0A0A14;width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1rem;transition:all .3s}
.search-box button:hover{background:#F5D0B0;transform:translateY(-50%) scale(1.05)}

/* ===== Hero区域 ===== */
.hero-section{position:relative;min-height:85vh;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:68px}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.45) saturate(1.2)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,20,.3) 0%,rgba(45,27,78,.5) 50%,rgba(10,10,20,.95) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;padding:40px 20px;max-width:800px}
.hero-content h1{font-size:3.2rem;font-weight:800;color:#fff;text-shadow:0 4px 20px rgba(232,168,124,.3);margin-bottom:16px;line-height:1.3}
.hero-content h1 em{font-style:normal;color:#E8A87C}
.hero-content p{font-size:1.15rem;color:#C8BFD6;margin-bottom:32px;line-height:1.9}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#E8A87C,#D4956A);color:#0A0A14;font-weight:700;border-radius:30px;font-size:1rem;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,168,124,.35);color:#0A0A14}
.btn-outline{display:inline-block;padding:14px 36px;border:2px solid #E8A87C;color:#E8A87C;font-weight:600;border-radius:30px;font-size:1rem;transition:all .3s;background:transparent;cursor:pointer}
.btn-outline:hover{background:rgba(232,168,124,.12);transform:translateY(-2px)}

/* ===== 通用板块 ===== */
.section{padding:80px 0}
.section-alt{background:rgba(45,27,78,.12)}
.section-header{text-align:center;margin-bottom:50px}
.section-header h2{font-size:2.2rem;font-weight:700;color:#fff;margin-bottom:12px}
.section-header h2 span{color:#E8A87C}
.section-header p{font-size:1.05rem;color:#9B8FB5;max-width:650px;margin:0 auto}
.section-header h3{font-size:1.5rem;color:#C8BFD6;margin-top:8px}

/* ===== 视频卡片网格 ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.video-card{position:relative;border-radius:14px;overflow:hidden;background:rgba(45,27,78,.2);border:1px solid rgba(107,76,154,.15);transition:all .4s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(45,27,78,.4);border-color:rgba(232,168,124,.3)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(.8);width:64px;height:64px;background:rgba(232,168,124,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .4s;z-index:3}
.video-card .play-btn::after{content:"";width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #0A0A14;margin-left:4px}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1)}
.video-card .duration{position:absolute;bottom:10px;right:10px;background:rgba(10,10,20,.85);color:#E8E0F0;padding:3px 8px;border-radius:4px;font-size:.8rem;z-index:3}
.video-card .card-body{padding:16px}
.video-card .card-body h4{font-size:1.05rem;color:#E8E0F0;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:#8B7FA0}
.video-card .card-meta .views{display:flex;align-items:center;gap:4px}
.video-card .card-meta .likes{color:#E8A87C}
.video-card .tag{position:absolute;top:12px;left:12px;background:rgba(232,168,124,.9);color:#0A0A14;padding:3px 10px;border-radius:12px;font-size:.78rem;font-weight:600;z-index:3}

/* ===== 分类标签 ===== */
.category-tabs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:36px}
.category-tabs .tab{padding:8px 22px;border:1px solid rgba(107,76,154,.3);border-radius:20px;color:#9B8FB5;font-size:.9rem;cursor:pointer;transition:all .3s;background:transparent}
.category-tabs .tab:hover,.category-tabs .tab.active{background:rgba(232,168,124,.15);border-color:#E8A87C;color:#E8A87C}

/* ===== 专家卡片 ===== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.expert-card{background:rgba(45,27,78,.18);border:1px solid rgba(107,76,154,.15);border-radius:16px;padding:32px 24px;text-align:center;transition:all .4s}
.expert-card:hover{transform:translateY(-5px);border-color:rgba(232,168,124,.3);box-shadow:0 12px 32px rgba(45,27,78,.3)}
.expert-card .avatar{width:110px;height:110px;border-radius:50%;margin:0 auto 18px;overflow:hidden;border:3px solid rgba(232,168,124,.4)}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.15rem;color:#E8E0F0;margin-bottom:6px}
.expert-card .role{color:#E8A87C;font-size:.9rem;margin-bottom:12px}
.expert-card p{font-size:.88rem;color:#9B8FB5;line-height:1.7;margin-bottom:16px}
.expert-card .expert-btns{display:flex;gap:10px;justify-content:center}
.expert-card .expert-btns a{padding:7px 18px;border-radius:18px;font-size:.82rem;border:1px solid rgba(232,168,124,.4);color:#E8A87C;transition:all .3s}
.expert-card .expert-btns a:hover{background:rgba(232,168,124,.15)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid rgba(107,76,154,.2);border-radius:12px;margin-bottom:14px;overflow:hidden;background:rgba(45,27,78,.1)}
.faq-item .faq-q{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;cursor:pointer;transition:all .3s}
.faq-item .faq-q:hover{background:rgba(232,168,124,.06)}
.faq-item .faq-q h4{font-size:1rem;color:#E8E0F0;font-weight:600}
.faq-item .faq-q .arrow{color:#E8A87C;font-size:1.2rem;transition:transform .3s}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px}
.faq-item .faq-a p{font-size:.95rem;color:#9B8FB5;line-height:1.8}

/* ===== 用户评价 ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:rgba(45,27,78,.15);border:1px solid rgba(107,76,154,.15);border-radius:14px;padding:28px;transition:all .3s}
.review-card:hover{border-color:rgba(232,168,124,.25)}
.review-card .stars{color:#E8A87C;font-size:1rem;margin-bottom:12px;letter-spacing:2px}
.review-card .review-text{font-size:.95rem;color:#C8BFD6;line-height:1.8;margin-bottom:16px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:12px}
.review-card .reviewer .r-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#6B4C9A,#E8A87C);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.review-card .reviewer .r-info .r-name{font-size:.9rem;color:#E8E0F0;font-weight:600}
.review-card .reviewer .r-info .r-date{font-size:.8rem;color:#8B7FA0}

/* ===== 合作品牌 ===== */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center}
.brand-wall .brand-item{background:rgba(45,27,78,.15);border:1px solid rgba(107,76,154,.15);border-radius:12px;padding:20px 30px;color:#9B8FB5;font-size:1rem;font-weight:600;transition:all .3s}
.brand-wall .brand-item:hover{border-color:rgba(232,168,124,.3);color:#E8A87C}

/* ===== How-To指南 ===== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:24px;margin-top:36px}
.howto-step{text-align:center;padding:32px 20px;background:rgba(45,27,78,.12);border:1px solid rgba(107,76,154,.12);border-radius:14px;transition:all .3s}
.howto-step:hover{border-color:rgba(232,168,124,.25);transform:translateY(-3px)}
.howto-step .step-num{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#E8A87C,#D4956A);color:#0A0A14;font-size:1.4rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.howto-step h4{font-size:1.05rem;color:#E8E0F0;margin-bottom:10px}
.howto-step p{font-size:.9rem;color:#9B8FB5;line-height:1.7}

/* ===== 社交分享 ===== */
.share-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.share-btns a{display:flex;align-items:center;gap:6px;padding:10px 20px;border-radius:22px;font-size:.88rem;font-weight:600;transition:all .3s}
.share-btns .share-wechat{background:rgba(7,193,96,.15);color:#07C160;border:1px solid rgba(7,193,96,.3)}
.share-btns .share-weibo{background:rgba(230,73,46,.15);color:#E6492E;border:1px solid rgba(230,73,46,.3)}
.share-btns .share-douyin{background:rgba(254,44,85,.15);color:#FE2C55;border:1px solid rgba(254,44,85,.3)}
.share-btns .share-bilibili{background:rgba(0,174,236,.15);color:#00AEEC;border:1px solid rgba(0,174,236,.3)}
.share-btns a:hover{transform:translateY(-2px);filter:brightness(1.2)}

/* ===== 联系信息 ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:28px}
.contact-card{background:rgba(45,27,78,.15);border:1px solid rgba(107,76,154,.15);border-radius:14px;padding:28px;text-align:center;transition:all .3s}
.contact-card:hover{border-color:rgba(232,168,124,.25)}
.contact-card .icon{font-size:2rem;margin-bottom:12px}
.contact-card h4{font-size:1.05rem;color:#E8E0F0;margin-bottom:8px}
.contact-card p{font-size:.9rem;color:#9B8FB5}

/* ===== 页脚 ===== */
.site-footer{background:rgba(10,10,20,.95);border-top:1px solid rgba(107,76,154,.2);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:36px;margin-bottom:40px}
.footer-col h4{font-size:1.05rem;color:#E8A87C;margin-bottom:16px;font-weight:600}
.footer-col p{font-size:.88rem;color:#8B7FA0;line-height:1.8}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:.88rem;color:#8B7FA0;transition:color .3s}
.footer-col ul li a:hover{color:#E8A87C}
.footer-col .qr-img{width:120px;border-radius:8px;margin-top:8px}
.footer-bottom{border-top:1px solid rgba(107,76,154,.15);padding:20px 0;text-align:center}
.footer-bottom p{font-size:.85rem;color:#6B5F80}

/* ===== 面包屑 ===== */
.breadcrumb{padding:16px 0;font-size:.88rem;color:#8B7FA0}
.breadcrumb a{color:#E8A87C}
.breadcrumb span{margin:0 8px;color:#6B5F80}

/* ===== 内页通用 ===== */
.page-hero{padding:120px 0 60px;text-align:center;background:linear-gradient(180deg,rgba(45,27,78,.3),rgba(10,10,20,.95))}
.page-hero h1{font-size:2.6rem;color:#fff;font-weight:700;margin-bottom:12px}
.page-hero p{font-size:1.05rem;color:#9B8FB5}
.page-content{padding:60px 0}

/* ===== 回到顶部 ===== */
.back-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;background:rgba(232,168,124,.9);color:#0A0A14;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.3rem;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;border:none}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:#E8A87C;transform:translateY(-3px)}

/* ===== 视频模态框 ===== */
.video-modal{position:fixed;inset:0;background:rgba(10,10,20,.92);z-index:9999;display:none;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal .modal-inner{width:90%;max-width:900px;background:#1A1230;border-radius:16px;overflow:hidden;position:relative}
.video-modal .modal-close{position:absolute;top:12px;right:16px;color:#E8A87C;font-size:1.8rem;cursor:pointer;z-index:10;background:none;border:none;line-height:1}
.video-modal .modal-body{padding:20px;text-align:center;color:#9B8FB5}
.video-modal .modal-body h3{color:#E8E0F0;margin-bottom:12px}

/* ===== 响应式 ===== */
@media(max-width:992px){
.nav-menu{display:none;position:absolute;top:68px;left:0;width:100%;background:rgba(10,10,20,.98);flex-direction:column;padding:20px;border-bottom:1px solid rgba(107,76,154,.2)}
.nav-menu.open{display:flex}
.nav-toggle{display:flex}
.hero-content h1{font-size:2.2rem}
.video-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
}
@media(max-width:768px){
.hero-section{min-height:70vh}
.hero-content h1{font-size:1.8rem}
.hero-content p{font-size:1rem}
.section{padding:50px 0}
.section-header h2{font-size:1.7rem}
.video-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
.hero-btns{flex-direction:column;align-items:center}
}
@media(max-width:480px){
.footer-grid{grid-template-columns:1fr}
.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.nav-logo span{font-size:1.1rem}
}