/*
Theme Name: 添壹 AI 公司
Theme URI: https://tianyi-ai-update.oss-cn-chengdu.aliyuncs.com/
Author: 添壹科技（贵州）有限公司
Description: 添壹 AI 公司客户端官网：产品介绍、宣传片、AI 员工、功能、费用、自动读取最新版本的下载按钮、使用手册。外观 → 自定义 →「添壹官网设置」里填联系方式。
Version: 1.0.0
Requires PHP: 7.4
Text Domain: tianyi-ai
*/
:root{--blue:#2563eb;--b2:#4f8cff;--cyan:#38e1ff;--vio:#a78bfa;--ink:#0f172a;--mut:#64748b;--line:#e5e7eb;--bg:#f7f8fb;--dark:#05070d}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.grad{background:linear-gradient(100deg,var(--b2),var(--cyan) 50%,var(--vio));-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--mut)}.small{font-size:14px}.tiny{font-size:13px;color:var(--mut);margin-top:18px}
.btn{display:inline-block;background:var(--blue);color:#fff;border-radius:999px;padding:12px 28px;font-weight:700;transition:.2s;border:1px solid var(--blue)}
.btn:hover{background:#1d4ed8;transform:translateY(-1px);box-shadow:0 10px 30px rgba(37,99,235,.35)}
.btn.sm{padding:7px 18px;font-size:14px}.btn.lg{padding:16px 36px;font-size:18px}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}.btn.ghost:hover{background:rgba(255,255,255,.08);box-shadow:none}
/* 顶部导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(5,7,13,.78);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:19px}
.brand img{width:32px;height:32px;border-radius:8px}.brand b{color:var(--b2)}
.links{display:flex;align-items:center;gap:26px}.links a{color:rgba(255,255,255,.78);font-size:15px}.links a:hover{color:#fff}.links .btn{color:#fff}
/* 首屏 */
.hero{position:relative;overflow:hidden;background:var(--dark);color:#fff;padding:120px 0 110px;text-align:center}
.glow{position:absolute;border-radius:50%;filter:blur(120px);opacity:.55}
.g1{width:700px;height:700px;background:#1d4ed8;left:-180px;top:-260px}.g2{width:620px;height:620px;background:#7c3aed;right:-160px;bottom:-320px}
.hero-in{position:relative}
.eyebrow{display:inline-block;padding:6px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);font-size:14px;color:rgba(255,255,255,.85);margin:0 0 26px}
.hero h1 .grad{white-space:nowrap}
.hero h1{font-size:clamp(34px,6.4vw,80px);line-height:1.12;margin:0 0 26px;font-weight:900;letter-spacing:-.01em}
.lead{font-size:clamp(16px,1.6vw,20px);color:rgba(255,255,255,.72);max-width:760px;margin:0 auto 38px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .tiny{color:rgba(255,255,255,.5)}
/* 宣传片 */
.film-sec{background:linear-gradient(var(--dark) 50%,#fff 50%);padding:0 0 40px}
.film{position:relative;border-radius:22px;overflow:hidden;box-shadow:0 40px 100px rgba(15,23,42,.35);background:#000;aspect-ratio:16/9}
.film video{width:100%;height:100%;display:block}
.play{position:absolute;left:28px;bottom:28px;height:60px;padding:0 28px;border-radius:999px;border:0;background:rgba(255,255,255,.94);color:var(--blue);font-size:18px;font-weight:800;cursor:pointer;box-shadow:0 10px 40px rgba(0,0,0,.4);transition:.2s;font-family:inherit}
.play:hover{transform:scale(1.07)}
/* 通用区块 */
.sec{padding:100px 0}.sec.alt{background:var(--bg)}
.sec.dark{background:var(--dark);color:#fff}.sec.dark .sub,.sec.dark p{color:rgba(255,255,255,.68)}
h2{font-size:clamp(30px,4vw,48px);line-height:1.2;text-align:center;margin:0 0 18px;font-weight:900}
.sub{text-align:center;color:var(--mut);font-size:18px;max-width:760px;margin:0 auto 40px}
.note{color:var(--mut);font-size:14px;text-align:center;margin-top:28px}.center{text-align:center}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.pain{padding:30px 26px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.pain b{display:block;font-size:40px;font-weight:900;background:linear-gradient(100deg,#ff6b4a,#ff3b6b);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.pain p{margin:10px 0 0;color:var(--mut)}
.card{position:relative;padding:28px 24px;border-radius:20px;background:#fff;border:1px solid var(--line);transition:.25s}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 50px rgba(15,23,42,.08);border-color:#c7d7fe}
.card .num{font-size:13px;font-weight:800;color:var(--b2);letter-spacing:.15em}
.card h3{margin:8px 0 8px;font-size:21px}.card p{margin:0;color:var(--mut);font-size:15px}
.card.flat{background:var(--bg);border:0}
/* 功能 */
.feat{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;align-items:center;margin-top:90px}
.feat.rev .ft{order:2}
.tag{font-size:14px;font-weight:800;letter-spacing:.18em;color:var(--b2)}
.ft h3{font-size:clamp(26px,3vw,40px);line-height:1.25;margin:14px 0 18px;color:#fff}
.ft p{font-size:17px}
.fi img{border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.55);border:1px solid rgba(255,255,255,.08)}
/* 费用 */
.price{text-align:center;padding:36px 20px;border-radius:20px;background:#fff;border:1px solid var(--line)}
.pv{display:block;font-size:52px;font-weight:900;line-height:1.1;background:linear-gradient(100deg,var(--b2),var(--cyan) 60%,var(--vio));-webkit-background-clip:text;background-clip:text;color:transparent}
.price:last-child .pv{background:linear-gradient(100deg,#ff6b4a,#ff3b6b);-webkit-background-clip:text;background-clip:text}
.pl{display:block;color:var(--mut);margin-top:10px}
#cost .sub{margin-top:36px}
/* 下载 */
.dl{text-align:center}
.dl-icon{width:96px;height:96px;border-radius:24px;margin:0 auto 22px;box-shadow:0 0 60px rgba(79,140,255,.45)}
.req{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:820px;margin:40px auto 0}
.req div{padding:16px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);font-size:15px;color:rgba(255,255,255,.8)}
.req b{display:block;font-size:13px;color:var(--b2);letter-spacing:.1em;margin-bottom:4px}
.dl .tiny a{color:var(--cyan)}
/* 联系 */
.contact{display:flex;align-items:center;justify-content:center;gap:60px;flex-wrap:wrap}
.contact h2,.contact .sub{text-align:left;margin-left:0}
.clist{list-style:none;padding:0;margin:0;font-size:18px}.clist li{margin:8px 0}.clist b{display:inline-block;width:64px;color:var(--mut);font-weight:500}
.qr{width:200px;height:200px;border-radius:16px;border:1px solid var(--line);padding:10px;background:#fff}
/* 页脚 */
.foot{background:var(--dark);color:rgba(255,255,255,.6);padding:50px 0}
.foot-in{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}.foot .muted{color:rgba(255,255,255,.5)}
/* 使用手册等普通页面 */
.doc{max-width:900px;padding-top:60px;padding-bottom:80px}
.doc h1{font-size:40px;font-weight:900;margin:0 0 30px}
.doc-body h2{text-align:left;font-size:28px;margin:54px 0 16px;padding-top:10px;border-top:1px solid var(--line)}
.doc-body h3{font-size:20px}
.doc-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px}
.doc-body th,.doc-body td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
.doc-body th{background:var(--bg)}
.doc-body li{margin:4px 0}
.doc-cta{text-align:center;margin-top:50px}
/* 滚动出现 */
.rise{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}.rise.in{opacity:1;transform:none}
@media (max-width:900px){
  .links a:not(.btn){display:none}
  .grid4,.grid3{grid-template-columns:1fr 1fr}
  .feat,.feat.rev{grid-template-columns:1fr;gap:26px;margin-top:60px}.feat.rev .ft{order:0}
  .req{grid-template-columns:1fr 1fr}
  .sec{padding:70px 0}.hero{padding:80px 0}
}
@media (max-width:560px){.grid4,.grid3{grid-template-columns:1fr}}