/* V槽 CMS 前台样式 —— 颜色 / 圆角 / 字体由主题变量驱动（见 themes/themes.js） */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
--primary:#23AC38;--primary-dark:#1a8c2d;--primary-light:#e8f5e9;
--accent:#E60012;--accent-dark:#b80010;
--dark:#1a2e1a;
--hero-gradient:radial-gradient(ellipse 80% 60% at 50% 40%,rgba(35,172,56,0.25) 0%,transparent 70%),radial-gradient(ellipse 50% 40% at 80% 70%,rgba(230,0,18,0.08) 0%,transparent 60%),linear-gradient(160deg,#1a2e1a 0%,#1a5a2e 50%,#1a2e1a 100%);
--gray-50:#f8faf8;--gray-100:#f1f5f1;--gray-200:#e2ebe2;
--gray-300:#c5d9c5;--gray-400:#9db29d;--gray-500:#5a7a5a;--gray-600:#456045;--gray-700:#334d33;--gray-900:#1a2e1a;
--white:#ffffff;
--shadow-sm:0 1px 3px rgba(0,0,0,0.08);
--shadow-md:0 4px 12px rgba(0,0,0,0.10);
--shadow-lg:0 10px 30px rgba(0,0,0,0.12);
--radius-sm:8px;--radius-md:12px;--radius-lg:20px;
--transition:all 0.25s ease;
--font-display:'Bebas Neue',sans-serif;
--font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--white);color:var(--gray-900);line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
button{cursor:pointer;border:none;outline:none;font-family:inherit}
ul{list-style:none}
img{max-width:100%}
/* nav */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;gap:2rem;padding:0.9rem 3rem;background:color-mix(in srgb,var(--dark) 95%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,0.12)}
nav .logo{margin-right:auto;display:flex;align-items:center;gap:0.6rem}
nav .logo img{height:36px;width:auto}
nav .logo .brand-name{color:#fff;font-weight:700;font-size:1.1rem;letter-spacing:0.5px}
.nav-links{display:flex;gap:2rem}
.nav-links a{color:rgba(255,255,255,0.75);font-size:0.92rem;font-weight:500;transition:var(--transition)}
.nav-links a:hover{color:#fff}
.nav-btn{background:var(--primary);color:#fff;padding:0.5rem 1.2rem;border-radius:var(--radius-sm);font-size:0.88rem;font-weight:600;transition:var(--transition)}
.nav-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}
/* hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--dark)}
.hero-background{position:absolute;inset:0;background:var(--hero-gradient)}
.hero-content{position:relative;z-index:1;text-align:center;max-width:820px;padding:2rem;margin-top:4rem}
.hero-eyebrow{display:inline-block;font-size:0.85rem;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--primary);margin-bottom:1.2rem;padding:0.3rem 1rem;border:1px solid color-mix(in srgb,var(--primary) 40%,transparent);border-radius:50px}
.hero h1{font-family:var(--font-display);font-size:clamp(3rem,7vw,5.5rem);line-height:1.05;color:#fff;letter-spacing:1px;margin-bottom:1.2rem}
.hero h1 span{color:var(--primary)}
.hero-sub{font-size:1.1rem;color:rgba(255,255,255,0.65);max-width:560px;margin:0 auto 2rem;line-height:1.7}
.hero-cta{display:inline-flex;align-items:center;gap:0.5rem;background:var(--primary);color:#fff;padding:0.85rem 2rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;transition:var(--transition);box-shadow:0 4px 20px color-mix(in srgb,var(--primary) 40%,transparent)}
.hero-cta:hover{background:var(--primary-dark);transform:translateY(-2px)}
.hero-cta .arrow{transition:transform 0.2s}
.hero-cta:hover .arrow{transform:translateX(4px)}
.hero-stat-strip{display:flex;justify-content:center;margin-top:3.5rem;border:1px solid rgba(255,255,255,0.08);border-radius:var(--radius-md);overflow:hidden;background:rgba(255,255,255,0.05);backdrop-filter:blur(8px)}
.hstat{flex:1;padding:1.2rem 1rem;text-align:center;border-right:1px solid rgba(255,255,255,0.06)}
.hstat:last-child{border-right:none}
.hstat-num{font-family:var(--font-display);font-size:2.2rem;color:var(--primary);line-height:1;margin-bottom:0.3rem}
.hstat-label{font-size:0.78rem;color:rgba(255,255,255,0.5);letter-spacing:1px;text-transform:uppercase}
/* shared section */
.need-section{padding:5rem 2rem;max-width:1100px;margin:0 auto}
.need-header{text-align:center;margin-bottom:3.5rem}
.tag{display:inline-block;font-size:0.78rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--primary);background:color-mix(in srgb,var(--primary) 8%,transparent);padding:0.3rem 1rem;border-radius:50px;margin-bottom:1rem}
.need-header h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:700;line-height:1.25;margin-bottom:0.8rem}
.need-header h2 span{color:var(--primary)}
.need-header p{color:var(--gray-500);font-size:1rem}
.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}
.fade-up.in{opacity:1;transform:translateY(0)}
.step-label{display:flex;align-items:center;gap:1rem;margin:2rem 0 1rem;font-weight:600;font-size:1.05rem}
.num{width:32px;height:32px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.9rem;font-weight:700;flex-shrink:0}
/* advantages */
.adv-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.2rem}
.adv-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:1.6rem 1.4rem;transition:var(--transition)}
.adv-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.adv-ico{width:52px;height:52px;border-radius:var(--radius-md);background:color-mix(in srgb,var(--primary) 10%,transparent);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin-bottom:1rem}
.adv-card h3{font-size:1.05rem;font-weight:700;margin-bottom:0.5rem}
.adv-card p{font-size:0.9rem;color:var(--gray-500);line-height:1.6}
/* material grid (wizard) */
.material-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1rem;margin-bottom:1rem}
.mat-card{background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-md);padding:1.2rem 1rem;text-align:center;cursor:pointer;transition:var(--transition)}
.mat-card:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.mat-card.selected{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 5%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}
.mat-icon{font-size:2rem;margin-bottom:0.5rem}
.mat-name{font-weight:600;font-size:0.95rem;margin-bottom:0.25rem}
.mat-desc{font-size:0.78rem;color:var(--gray-500)}
/* thickness */
.thickness-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1rem}
.thick-card{display:flex;align-items:center;gap:0.8rem;background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-md);padding:0.9rem 1rem;cursor:pointer;transition:var(--transition)}
.thick-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.thick-card.selected{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 5%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}
.thick-ico{font-size:1.6rem;flex-shrink:0}
.thick-info h4{font-size:0.9rem;font-weight:600;margin-bottom:0.15rem}
.thick-info p{font-size:0.75rem;color:var(--gray-500)}
/* scale */
.scale-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1rem}
.scale-card{display:flex;align-items:center;gap:1rem;background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-md);padding:1rem 1.2rem;cursor:pointer;transition:var(--transition)}
.scale-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.scale-card.selected{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 5%,transparent);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 18%,transparent)}
.scale-ico{font-size:1.8rem;flex-shrink:0}
.scale-info h4{font-size:0.95rem;font-weight:600;margin-bottom:0.2rem}
.scale-info p{font-size:0.8rem;color:var(--gray-500)}
/* features */
.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:0.8rem}
.feat-card{display:flex;align-items:center;gap:0.6rem;background:var(--gray-50);border:2px solid transparent;border-radius:var(--radius-sm);padding:0.65rem 0.9rem;cursor:pointer;font-size:0.88rem;color:var(--gray-700);transition:var(--transition)}
.feat-card:hover{border-color:var(--gray-300);background:#fff}
.feat-card.selected{border-color:var(--primary);background:color-mix(in srgb,var(--primary) 6%,transparent);color:var(--primary);font-weight:600}
.feat-dot{width:10px;height:10px;border-radius:50%;background:var(--gray-300);flex-shrink:0;transition:var(--transition)}
.feat-card.selected .feat-dot{background:var(--primary)}
/* result box */
.result-box{display:none;margin-top:2.5rem;padding:2rem;background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 8%,#fff) 0%,#fafffa 100%);border:1px solid color-mix(in srgb,var(--primary) 12%,transparent);border-radius:var(--radius-lg);animation:slideIn 0.4s ease}
.result-box.visible{display:block}
@keyframes slideIn{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}
.result-title{font-size:1.1rem;font-weight:700;margin-bottom:1.5rem;color:var(--dark)}
.result-note{margin-top:1rem}
.note-text{font-size:0.88rem;color:var(--gray-600);background:color-mix(in srgb,var(--primary) 6%,transparent);padding:0.7rem 1rem;border-radius:var(--radius-sm);border-left:3px solid var(--primary);margin-top:0.5rem}
/* products */
.result-products{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.2rem}
.rp-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:1.4rem;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}
.rp-card-img{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--gray-100);border-radius:var(--radius-sm);margin-bottom:1rem}
.rp-card-img img,.rp-card-img video{width:100%;height:100%;object-fit:cover;transition:transform 0.3s}
.play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:48px;height:48px;background:rgba(255,255,255,0.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;color:var(--primary);box-shadow:0 2px 10px rgba(0,0,0,0.2);transition:var(--transition);pointer-events:none}
.rp-card-img:hover .play-icon{transform:translate(-50%,-50%) scale(1.1);background:#fff}
.rp-card:hover .rp-card-img img{transform:scale(1.05)}
.rp-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.rp-card.top-pick{border-color:var(--primary);background:linear-gradient(135deg,color-mix(in srgb,var(--primary) 8%,#fff) 0%,#fff 100%)}
.rp-card.top-pick::before{content:"推荐";position:absolute;top:0;right:0;background:var(--primary);color:#fff;font-size:0.7rem;font-weight:700;padding:0.2rem 0.6rem;border-bottom-left-radius:var(--radius-sm);z-index:2}
.rp-badge{display:inline-block;font-size:0.72rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--primary);background:color-mix(in srgb,var(--primary) 8%,transparent);padding:0.2rem 0.6rem;border-radius:4px;margin-bottom:0.6rem}
.rp-name{font-size:1.05rem;font-weight:700;margin-bottom:0.5rem}
.rp-desc{font-size:0.85rem;color:var(--gray-500);margin-bottom:0.8rem;line-height:1.5}
.rp-tags{display:flex;flex-wrap:wrap;gap:0.4rem;margin-bottom:1rem}
.rp-tag{font-size:0.72rem;background:var(--gray-100);color:var(--gray-600);padding:0.2rem 0.5rem;border-radius:4px}
.rp-link{color:var(--primary);font-size:0.88rem;font-weight:600;background:none;padding:0;transition:var(--transition)}
.rp-link:hover{color:var(--primary-dark)}
/* contact */
.contact-section{max-width:1100px;margin:0 auto;padding:5rem 2rem}
.contact-box{background:var(--dark);border-radius:var(--radius-lg);padding:3rem 2.5rem;text-align:center;position:relative;overflow:hidden}
.contact-box::before{content:"";position:absolute;inset:0;background:var(--hero-gradient);opacity:0.5}
.contact-inner{position:relative;z-index:1}
.contact-box .tag{background:rgba(255,255,255,0.1)}
.contact-box h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;margin-bottom:0.8rem}
.contact-box h2 span{color:var(--primary)}
.contact-box p{color:rgba(255,255,255,0.7);max-width:560px;margin:0 auto 2rem}
.contact-methods{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;margin-bottom:2rem}
.contact-method{display:flex;align-items:center;gap:0.5rem;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);color:#fff;padding:0.6rem 1.1rem;border-radius:50px;font-size:0.9rem}
.contact-method .cm-ico{font-size:1.1rem}
.contact-cta{display:inline-flex;align-items:center;gap:0.5rem;background:var(--primary);color:#fff;padding:0.9rem 2.2rem;border-radius:var(--radius-md);font-size:1.05rem;font-weight:700;transition:var(--transition);box-shadow:0 4px 20px color-mix(in srgb,var(--primary) 40%,transparent)}
.contact-cta:hover{background:var(--primary-dark);transform:translateY(-2px)}
/* footer */
footer{background:var(--dark);color:rgba(255,255,255,0.6);text-align:center;padding:2.5rem;margin-top:0}
footer .logo{margin-bottom:0.6rem;display:flex;justify-content:center;align-items:center;gap:0.5rem}
footer .logo img{height:40px;width:auto}
footer .logo .brand-name{color:#fff;font-weight:700;font-size:1.1rem}
footer p{font-size:0.82rem}
/* chat */
.chat-fab{position:fixed;bottom:24px;right:24px;z-index:200;width:56px;height:56px;background:var(--primary);color:#fff;border-radius:50%;font-size:1.5rem;box-shadow:0 4px 20px color-mix(in srgb,var(--primary) 40%,transparent);transition:var(--transition);display:flex;align-items:center;justify-content:center}
.chat-fab:hover{background:var(--primary-dark);transform:scale(1.08)}
.chat-window{display:none;position:fixed;bottom:90px;right:24px;z-index:200;width:360px;max-width:calc(100vw - 32px);background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;flex-direction:column;max-height:520px}
.chat-window.open{display:flex;animation:popIn 0.3s ease}
@keyframes popIn{from{opacity:0;transform:scale(0.9) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
.chat-win-header{display:flex;align-items:center;gap:0.8rem;padding:1rem 1.2rem;background:var(--dark);color:#fff}
.cw-ava{width:38px;height:38px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.95rem;flex-shrink:0}
.cw-info{flex:1}
.cw-info strong{font-size:0.9rem;display:block}
.cw-info span{font-size:0.72rem;color:rgba(255,255,255,0.5)}
.cw-status{width:10px;height:10px;background:#22c55e;border-radius:50%;box-shadow:0 0 0 3px rgba(34,197,94,0.25)}
.chat-msgs{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:0.8rem;max-height:280px}
.cm{display:flex;gap:0.5rem;align-items:flex-end}
.cm.u{flex-direction:row-reverse}
.cm-av{width:28px;height:28px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0.72rem;font-weight:700;flex-shrink:0}
.cm-bubble{max-width:75%;background:var(--gray-100);padding:0.6rem 0.85rem;border-radius:12px;font-size:0.88rem;line-height:1.5}
.cm.u .cm-bubble{background:var(--primary);color:#fff}
.chat-quick-chips{display:flex;flex-wrap:wrap;gap:0.4rem;padding:0.6rem 1rem;border-top:1px solid var(--gray-200)}
.cq{font-size:0.75rem;background:var(--gray-50);border:1px solid var(--gray-200);border-radius:50px;padding:0.3rem 0.7rem;cursor:pointer;transition:var(--transition);color:var(--gray-700)}
.cq:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.chat-input-row{display:flex;gap:0.5rem;padding:0.8rem 1rem;border-top:1px solid var(--gray-200);align-items:flex-end}
.c-inp{flex:1;border:1px solid var(--gray-200);border-radius:var(--radius-sm);padding:0.55rem 0.75rem;font-size:0.88rem;resize:none;font-family:inherit;max-height:100px;line-height:1.4}
.c-inp:focus{outline:none;border-color:var(--primary)}
.c-send{width:38px;height:38px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);font-size:1rem;transition:var(--transition);flex-shrink:0;display:flex;align-items:center;justify-content:center}
.c-send:hover{background:var(--primary-dark)}
/* lightbox */
.lightbox{display:none;position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,0.92);align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.lightbox.open{display:flex;animation:fadeIn 0.2s ease}
.lightbox img,.lightbox video{max-width:92vw;max-height:88vh;object-fit:contain;border-radius:var(--radius-md)}
.lightbox-close{position:absolute;top:16px;right:20px;color:#fff;font-size:1.8rem;cursor:pointer;opacity:0.7;transition:var(--transition);background:none;border:none}
.lightbox-close:hover{opacity:1}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
/* responsive */
@media(max-width:768px){
nav{padding:0.8rem 1.2rem;gap:1rem}
.nav-links{display:none}
.hero-stat-strip{flex-wrap:wrap}
.hstat{min-width:50%;border-bottom:1px solid rgba(255,255,255,0.06)}
.scale-row{grid-template-columns:1fr}
.thickness-row{grid-template-columns:repeat(2,1fr)}
.material-grid{grid-template-columns:repeat(2,1fr)}
.result-products{grid-template-columns:1fr}
.chat-window{right:12px;bottom:80px}
.chat-fab{right:16px;bottom:16px}
}