/* ============ 全局 ============ */
:root{
  --bg-page:#F8F6F2;
  --bg-card:#fff;
  --text-primary:#222;
  --text-secondary:#666;
  --text-muted:#888;
  --border-light:#E5E5E5;
  --border-medium:#999;
  --accent-success:#3a8;
  --accent-error:#d33;
  --shadow-sm:0 1px 4px rgba(0,0,0,.08);
  --shadow-md:0 6px 18px rgba(0,0,0,.15);
  --shadow-lg:0 12px 20px rgba(0,0,0,.1);
  --radius-sm:4px;
  --radius-md:8px;
  --radius-lg:12px;
  --font-sans:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
body{background-color:var(--bg-page);font-family:var(--font-sans);color:var(--text-primary);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
#mainContent{position:relative;z-index:1}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 淡入 ============ */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity 1.2s ease-out,transform 1.2s ease-out}
.fade-in.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){.fade-in{transition:none;opacity:1;transform:none}*{animation-duration:.01ms!important;transition-duration:.01ms!important}}

/* ============ 模块间距 ============ */
section{padding:120px 0}
@media(max-width:768px){section{padding:64px 0}}

/* ============ 标题 ============ */
.sec-head{margin-bottom:48px}
.sec-head h2{font-size:40px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.sec-head p{font-size:20px;color:var(--text-secondary)}
@media(max-width:768px){.sec-head{margin-bottom:32px}.sec-head h2{font-size:26px}.sec-head p{font-size:14px}}

/* ============ 按钮 ============ */
.btn-dark{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;background:#333;color:#fff;border:none;border-radius:var(--radius-md);font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;min-height:44px}
.btn-dark:hover{background:#222;transform:translateY(-3px);box-shadow:var(--shadow-md)}
.btn-dark:active{transform:translateY(1px);box-shadow:none}
.btn-light{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;background:var(--bg-card);color:#333;border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;min-height:44px}
.btn-light:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.btn-light:active{transform:translateY(1px);box-shadow:none}
.btn-full{width:100%;text-align:center}

/* ============ Hero ============ */
.hero{min-height:100vh;display:flex;align-items:center;padding:0 8vw}
.hero-wrap{width:100%;max-width:1200px;margin:0 auto;position:relative;height:500px}
.hero-left{position:absolute;left:0;bottom:40%}
.hero-left h1{font-size:64px;font-weight:700;color:var(--text-primary);margin-bottom:3px}
.hero-left p{font-size:24px;color:var(--text-secondary);margin-bottom:32px}
.hero-btns{display:flex;gap:20px}
.hero-right{position:absolute;right:0;top:40%}
.art-name{font-family:cursive;font-size:48px;color:var(--text-primary);writing-mode:vertical-lr}

@media(max-width:768px){
  .hero{min-height:auto;padding:80px 5vw 50px}
  .hero-wrap{height:auto;display:flex;flex-direction:column;align-items:center;gap:24px}
  .hero-left{position:static;text-align:center;width:100%}
  .hero-left h1{font-size:32px;line-height:1.2}
  .hero-left p{font-size:15px;margin-bottom:20px}
  .hero-btns{flex-direction:column;align-items:center;gap:12px;width:100%}
  .hero-btns .btn-dark,.hero-btns .btn-light{width:100%;max-width:280px;font-size:16px;padding:14px 24px}
  .hero-right{position:static}
  .art-name{font-size:32px;writing-mode:horizontal-tb}
}

/* ============ 交付作品 ============ */
.works-layout{display:flex;gap:60px;align-items:flex-start}
.works-imgs{flex:1;position:relative;height:500px}
.ss{position:absolute;background:var(--bg-card);border:2px solid var(--bg-card);border-radius:var(--radius-sm);box-shadow:0 2px 8px rgba(0,0,0,.1);overflow:hidden;cursor:pointer;transition:all .3s ease}
.ss:hover{transform:translateY(-5px)!important;box-shadow:var(--shadow-lg);z-index:5}
.ss img{width:100%;height:100%;object-fit:cover}
.works-stats-row{display:flex;gap:15px}
.stat-rect{width:100px;height:60px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);display:flex;flex-direction:column;align-items:center;justify-content:center}
.sr-num{font-size:20px;font-weight:700;color:var(--text-primary)}
.sr-label{font-size:12px;color:var(--text-secondary)}

@media(max-width:1024px){.works-layout{gap:30px}.works-imgs{height:420px}}
@media(max-width:768px){
  .works-layout{flex-direction:column;gap:24px}
  .works-imgs{height:auto;width:100%;display:flex;flex-wrap:nowrap;gap:10px;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;padding-bottom:8px;-ms-overflow-style:none;scrollbar-width:none}
  .works-imgs::-webkit-scrollbar{display:none}
  .ss{position:static!important;flex:0 0 auto;width:140px!important;height:100px!important;transform:none!important;scroll-snap-align:start;border-radius:6px;border-width:1px;box-shadow:var(--shadow-sm)}
  .ss:active{transform:scale(.96)!important;box-shadow:0 1px 2px rgba(0,0,0,.06)!important}
  .works-stats-row{flex-wrap:wrap;gap:8px;justify-content:center}
  .stat-rect{width:72px;height:48px;border-radius:6px}
  .sr-num{font-size:17px}
  .sr-label{font-size:10px}
}

/* ============ 功能特色 ============ */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feat-card{display:flex;flex-direction:column;justify-content:center;height:120px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:0 24px;transition:transform .2s,box-shadow .2s}
.feat-card:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.feat-card strong{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.feat-card span{font-size:12px;color:var(--text-secondary);line-height:1.5}
@media(max-width:1024px){.eat-grid{grid-template-columns:repeat(2,1fr);gap:16px}}
@media(max-width:768px){.feat-grid{grid-template-columns:1fr;gap:10px}.feat-card{height:auto;min-height:80px;padding:16px 18px}.feat-card strong{font-size:15px}.feat-card span{font-size:13px}.feat-card:active{transform:scale(.98);box-shadow:0 2px 8px rgba(0,0,0,.04)}}

/* ============ 合作流程 ============ */
.process-row{display:flex;align-items:center;gap:0}
.ps{flex:0 0 160px;text-align:center;transform:translateY(var(--y,0px))}
.ps-num{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:#333;color:#fff;font-size:12px;font-weight:600;margin-bottom:8px}
.ps strong{display:block;font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:4px}
.ps span{display:block;font-size:12px;color:var(--text-secondary);line-height:1.5;padding:0 4px}
.ps-dash{flex:1;height:40px;min-width:40px}
@media(max-width:768px){.process-row{flex-direction:column;gap:12px;align-items:center}.ps{flex:auto;transform:none;max-width:240px}.ps strong{font-size:16px}.ps-dash{display:none}}

/* ============ 联系 ============ */
.contact-layout{display:flex;gap:50px;align-items:flex-start}
.contact-cards{display:flex;flex-direction:column;gap:20px;flex-shrink:0}
.cc-item{width:200px;height:60px;display:flex;align-items:center;gap:14px;padding:0 18px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);cursor:pointer;transition:transform .2s,box-shadow .2s;min-height:44px;-webkit-user-select:none;user-select:none}
.cc-item:hover{transform:translateY(-3px);box-shadow:0 4px 12px rgba(0,0,0,.08)}
.cc-item:active{transform:scale(.97)}
.cc-icon{font-size:22px;flex-shrink:0}
.cc-item strong{display:block;font-size:14px;color:var(--text-primary)}
.cc-item span{font-size:12px;color:var(--text-muted)}
.contact-form{flex:1;max-width:340px}
.contact-form input,.contact-form textarea{width:100%;height:44px;padding:0 14px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);font-size:16px;font-family:inherit;color:#333;outline:none;margin-bottom:15px;transition:border-color .2s}
.contact-form textarea{height:88px;padding:12px 14px;resize:vertical}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--border-medium)}
.contact-form input:focus-visible,.contact-form textarea:focus-visible{outline:2px solid var(--border-medium);outline-offset:2px}
.form-feedback{text-align:center;margin-top:8px;font-size:13px;min-height:18px}
.form-feedback.success{color:var(--accent-success)}.form-feedback.error{color:var(--accent-error)}
@media(max-width:768px){.contact-layout{flex-direction:column;gap:24px}.cc-item{width:100%}.contact-form{max-width:100%;width:100%}.cc-item:active{transform:scale(.97)}}

/* ============ 页脚 ============ */
.footer{text-align:center;padding:40px 20px;color:var(--text-secondary);font-size:12px}
.footer a{color:var(--text-secondary)}.footer a:hover{color:var(--text-primary)}
@media(max-width:768px){.footer{padding:32px 20px 80px}.footer a{display:inline-block;padding:8px 4px}}

/* ============ 放大预览 ============ */
.zoom-overlay{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.85);display:none;align-items:center;justify-content:center}
.zoom-overlay.active{display:flex}
.zoom-overlay img{max-width:92vw;max-height:92vh;transform:scale(0);transition:transform .6s ease-in;border-radius:var(--radius-sm)}
.zoom-overlay.active img{transform:scale(1)}
@media(max-width:768px){.zoom-overlay img{max-width:96vw;max-height:85vh}}

/* ============ 复制 ============ */
.copy-toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#333;color:#fff;padding:12px 28px;border-radius:var(--radius-md);font-size:14px;z-index:10000;opacity:0;pointer-events:none;transition:opacity .3s}
.copy-toast.show{opacity:1}

.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}

/* ============ 二级/三级页面 ============ */
.sub-page{padding:80px 20px}
.sub-page .back{color:var(--text-secondary);font-size:14px;display:inline-block;margin-bottom:30px}
.sub-page .back:hover{color:var(--text-primary)}
.sub-page h1{font-size:40px;font-weight:700;color:var(--text-primary);margin-bottom:10px}
.sub-page .sub-title{font-size:20px;font-weight:300;color:var(--text-secondary);margin-bottom:50px}
.sub-page h2{font-size:24px;font-weight:700;color:var(--text-primary);margin:40px 0 16px}
.sub-page p,.sub-page li{font-size:15px;color:var(--text-secondary);line-height:1.8}
.sub-page .card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:20px 24px;margin-bottom:12px}
.sub-page .card strong{color:var(--text-primary)}
@media(max-width:768px){
  .sub-page{padding:80px 16px 60px}
  .sub-page h1{font-size:28px}
  .sub-page .sub-title{font-size:16px;margin-bottom:32px}
  .sub-page h2{font-size:20px;margin:32px 0 12px}
  .sub-page p,.sub-page li{font-size:14px;line-height:1.7}
  .sub-page .card{padding:16px 18px;margin-bottom:10px}
}