/* AI智能体服务 · 品牌官网 2026 */
:root{
  --bg:#F6F8F7; --surface:#fff; --ink:#0F1D18; --muted:#5B6B65; --muted-2:#84938D;
  --brand:#0E7A5F; --brand-dark:#0A5541; --brand-mid:#12A17E;
  --brand-soft:#E8F4EF; --brand-line:#CDE8DD; --accent:#D99A3D;
  --line:#E2E9E5; --radius:18px; --shadow:0 10px 30px rgba(16,45,36,.08);
  --container:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei UI","Microsoft YaHei",system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,248,247,.86);backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:.25s}
.site-header.scrolled{background:rgba(255,255,255,.92);border-color:var(--line);box-shadow:0 8px 24px rgba(16,45,36,.06)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:11px}
.brand .mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-mid));display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px;letter-spacing:.5px;box-shadow:0 8px 16px rgba(14,122,95,.28)}
.brand .name{font-weight:800;font-size:16.5px;letter-spacing:.2px;line-height:1.2}
.brand .name small{display:block;font-weight:600;font-size:11px;color:var(--muted);letter-spacing:.6px;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{font-size:14.5px;color:#33443D;font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:16px;height:2px;background:#33443D;border-radius:2px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:600;font-size:14.5px;border:1px solid transparent;cursor:pointer;transition:.2s;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--brand),#0B6B52);color:#fff;box-shadow:0 10px 22px rgba(14,122,95,.24)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 26px rgba(14,122,95,.3)}
.btn-ghost{background:#fff;color:var(--brand-dark);border-color:var(--brand-line)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-soft)}
.btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.35);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.22)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:10px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 480px at 82% -10%,rgba(18,161,126,.16),transparent 60%),
  radial-gradient(700px 420px at 8% 8%,rgba(217,154,61,.10),transparent 60%),
  linear-gradient(180deg,#F6F8F7, #F1F6F3 70%, #F6F8F7)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(14,122,95,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(14,122,95,.05) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 70%);pointer-events:none}
.hero-grid{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:56px;align-items:center;padding:78px 0 86px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);font-size:13px;font-weight:600;border:1px solid var(--brand-line)}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand-mid);display:inline-block}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;letter-spacing:-.03em;font-weight:800;margin:18px 0 20px}
.hero .lead{font-size:16.5px;color:var(--muted);max-width:540px;margin:0}
.cta-row{display:flex;gap:14px;margin:28px 0 16px;flex-wrap:wrap}
.micro{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.micro span::before{content:"✓";color:var(--brand);margin-right:6px;font-weight:800}

/* hero visual */
.hero-visual{position:relative;min-height:430px}
.mock-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 60px rgba(16,45,36,.12);padding:18px 18px 14px;z-index:2}
.mock-head{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:12px}
.win-dots{display:flex;gap:5px}
.win-dots i{width:8px;height:8px;border-radius:50%;background:#DFE7E3;display:inline-block}
.plat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0 14px}
.plat{font-size:12px;padding:8px 4px;border-radius:10px;background:#F4F8F6;text-align:center;color:#3A4A43;border:1px solid #E9F0EC;font-weight:500}
.plat.on{background:var(--brand-soft);border-color:var(--brand-line);color:var(--brand-dark);font-weight:700}
.mock-line{height:8px;border-radius:6px;background:#EDF2EF;margin:9px 0}
.mock-line.w80{width:80%}.mock-line.w60{width:60%}.mock-line.w70{width:70%}
.mock-foot{display:flex;justify-content:space-between;align-items:center;margin-top:14px;font-size:11.5px;color:var(--muted-2)}
.mock-foot b{color:var(--brand);font-weight:700}
.float-chip{position:absolute;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 16px 34px rgba(16,45,36,.12);padding:11px 14px;font-size:12.5px;z-index:3;display:flex;align-items:center;gap:9px}
.float-chip .ic{width:26px;height:26px;border-radius:8px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);font-weight:800;font-size:12px}
.chip-a{right:-6px;top:-14px}
.chip-b{left:-18px;bottom:64px}
.chip-c{right:10px;bottom:-14px}
@media (max-width:960px){.chip-a{right:0;top:-10px}.chip-b{left:0}.chip-c{right:6px}}

/* ---------- sections ---------- */
section{padding:84px 0}
.section-head{max-width:640px;margin-bottom:40px}
.section-head .kicker{color:var(--brand);font-weight:700;font-size:13px;letter-spacing:2px;text-transform:uppercase;margin-bottom:10px}
h2{font-size:clamp(26px,2.7vw,36px);letter-spacing:-.02em;line-height:1.2;margin:0 0 12px;font-weight:800}
.section-head p{color:var(--muted);margin:0;font-size:15.5px}
.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.25s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D5E5DD}
.card .icon{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;margin-bottom:16px}
.card h3{font-size:17.5px;margin:0 0 8px;font-weight:700}
.card p{color:var(--muted);font-size:14.5px;margin:0}
.card .more{display:inline-flex;gap:6px;align-items:center;color:var(--brand);font-weight:600;font-size:13.5px;margin-top:14px}
.card .more::after{content:"→";transition:.2s}
.card:hover .more::after{transform:translateX(3px)}

/* stats strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px 28px;box-shadow:var(--shadow)}
.stat b{display:block;font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--brand-dark)}
.stat span{font-size:13px;color:var(--muted)}
@media (max-width:760px){.stats{grid-template-columns:repeat(2,1fr)}.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr}.grid-2{grid-template-columns:1fr}}

/* member band */
.member{position:relative;overflow:hidden;background:linear-gradient(120deg,#0B5F49,#0E7A5F 55%,#12A17E);border-radius:26px;padding:44px;color:#fff;box-shadow:0 30px 60px rgba(10,85,65,.28)}
.member::after{content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 65%)}
.member-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;position:relative;z-index:2}
.member .tagline{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600}
.member h2{color:#fff;margin:16px 0 10px}
.member .desc{color:rgba(255,255,255,.82);font-size:14.5px;margin:0}
.member-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px}
.member-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:rgba(255,255,255,.92)}
.member-list li::before{content:"✓";flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:rgba(255,255,255,.2);display:grid;place-items:center;font-size:12px;font-weight:800;margin-top:2px}
.price-box{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);border-radius:20px;padding:26px;backdrop-filter:blur(6px);text-align:center}
.price-box .num{font-size:56px;font-weight:800;letter-spacing:-.03em;line-height:1}
.price-box .num small{font-size:18px;font-weight:600;margin-left:6px}
.price-box .cap{font-size:13px;color:rgba(255,255,255,.75);margin:10px 0 18px}
.price-box .btn{width:100%}
.price-box .note{font-size:11.5px;color:rgba(255,255,255,.66);margin-top:12px}
@media (max-width:900px){.member{padding:30px}.member-layout{grid-template-columns:1fr}}

/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;display:flex;flex-direction:column}
.price-card.featured{border-color:var(--brand);box-shadow:0 16px 40px rgba(14,122,95,.14);position:relative}
.price-card.featured::before{content:"最常见";position:absolute;top:-12px;left:24px;background:var(--brand);color:#fff;font-size:11.5px;font-weight:700;padding:4px 12px;border-radius:999px}
.price-card h3{margin:0 0 6px;font-size:16px}
.price-card .amount{font-size:30px;font-weight:800;letter-spacing:-.02em;margin:6px 0 14px}
.price-card .amount small{font-size:13px;color:var(--muted);font-weight:500;margin-left:4px}
.price-card ul{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:9px;font-size:13.8px;color:#3F5049}
.price-card li::before{content:"✓";color:var(--brand);font-weight:800;margin-right:7px}
.price-card .btn{margin-top:auto}
@media (max-width:900px){.price-grid{grid-template-columns:1fr}}

/* solutions */
.sol-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s}
.sol-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.sol-card .who{font-size:12px;color:var(--brand);font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:10px}
.sol-card h3{margin:0 0 8px;font-size:17px}
.sol-card p{margin:0;color:var(--muted);font-size:14px}
.sol-card .items{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:6px;font-size:13.5px;color:#3F5049}
.sol-card .items li::before{content:"·";color:var(--brand);font-weight:800;margin-right:8px}

/* faq */
.faq-list{display:grid;gap:12px;max-width:820px}
details.faq{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0 20px;transition:.2s}
details.faq[open]{border-color:var(--brand-line);box-shadow:0 8px 22px rgba(16,45,36,.06)}
details.faq summary{cursor:pointer;padding:17px 0;font-weight:600;font-size:15px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--brand);font-size:20px;font-weight:400;transition:.2s}
details.faq[open] summary::after{content:"−"}
details.faq .answer{padding:0 0 17px;color:var(--muted);font-size:14.2px;max-width:720px}

/* cta band */
.cta-band{background:linear-gradient(120deg,#0B5F49,#0E7A5F);border-radius:26px;padding:46px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{margin:0;color:rgba(255,255,255,.8);font-size:14.5px}
.cta-band .btns{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{background:#0D1F19;color:#B9C9C2;margin-top:20px}
.footer-top{display:grid;grid-template-columns:1.4fr .8fr .8fr .8fr;gap:40px;padding:58px 0 42px}
.footer-brand .brand .name{color:#fff}
.footer-brand .brand .name small{color:#9DB2A9}
.footer-brand p{margin:16px 0 0;font-size:13.5px;color:#94A8A0;max-width:320px}
.footer-col h4{color:#fff;font-size:14px;margin:0 0 14px;font-weight:700}
.footer-col a{display:block;font-size:13.5px;color:#A7BAB2;margin-bottom:9px;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 30px;font-size:12.5px;color:#8EA39A;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer-bottom a{color:#B9C9C2;text-decoration:underline;text-underline-offset:3px}
.footer-bottom .warn{color:#7E948B}
@media (max-width:860px){.footer-top{grid-template-columns:1fr 1fr;gap:28px}}

/* reveal：默认可见；仅在 JS 可用时才做入场动画（避免无 JS 时内容消失） */
.reveal{opacity:1;transform:none}
html.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
html.js .reveal.in{opacity:1;transform:none}

/* hero responsive */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
  .hero-visual{min-height:380px;max-width:520px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .site-header.nav-open .nav-links{display:flex;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:18px 24px;gap:16px;box-shadow:0 16px 30px rgba(16,45,36,.08)}
}

/* 微信客服悬浮按钮 */
.wcs-float{position:fixed;right:20px;bottom:22px;z-index:9999;display:inline-flex;align-items:center;gap:7px;background:#07C160;color:#fff!important;padding:11px 16px;border-radius:999px;font-size:14px;font-weight:600;box-shadow:0 10px 26px rgba(7,193,96,.35);transition:.2s}
.wcs-float:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(7,193,96,.42)}
@media (max-width:640px){.wcs-float{right:14px;bottom:16px;padding:10px 14px;font-size:13px}}

/* legal / docs */
.legal{max-width:860px;margin:0 auto;padding:64px 0 80px}
.legal h1{font-size:32px;margin:0 0 8px}
.legal .meta{color:var(--muted);font-size:13px;margin-bottom:28px}
.legal .intro{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;color:var(--muted);font-size:14px;margin-bottom:30px}
.legal h2{font-size:19px;margin:34px 0 10px}
.legal p,.legal li{font-size:14.5px;color:#3A4A43;line-height:1.9}
.legal ul{padding-left:22px}
.legal .todo{color:var(--accent)}

/* blog */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.post-card .cover{height:150px;background:linear-gradient(135deg,var(--brand-soft),#F7EFE1);position:relative}
.post-card .cover b{position:absolute;left:18px;bottom:14px;font-size:34px;color:rgba(14,122,95,.25);font-weight:800}
.post-card .body{padding:20px}
.post-card h3{margin:0 0 8px;font-size:16.5px;line-height:1.45}
.post-card p{margin:0;color:var(--muted);font-size:13.5px}
.article{max-width:820px;margin:0 auto;padding:64px 0 80px}
.article h1{font-size:34px;line-height:1.3;margin:0 0 12px}
.article .meta{color:var(--muted);font-size:13px;margin-bottom:30px}
.article h2{font-size:21px;margin:34px 0 10px}
.article p{font-size:15.5px;line-height:1.95;color:#2F3F38}
.article .note{background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:14px;padding:16px 20px;font-size:14px;color:var(--brand-dark);margin:26px 0}
@media (max-width:860px){.post-grid{grid-template-columns:1fr}}