:root{--ink:#16213a;--mut:#5a6a85;--line:#e3e8f0;--brand:#0b6b5f;--brand2:#d8500c;--bg:#fbfcfe;--card:#fff;--r:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:86px}
body{margin:0;font-family:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.site-head{display:flex;align-items:center;justify-content:space-between;padding:14px max(20px,6vw);background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;flex-wrap:wrap;gap:10px}
.brand{font-weight:800;color:var(--ink);font-size:19px;display:flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.site-head nav{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.site-head nav a{color:var(--mut);font-weight:600;font-size:15px}
.site-head nav a.active,.site-head nav a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-block;padding:10px 18px;border-radius:10px;font-weight:700;border:2px solid transparent;cursor:pointer;font-size:16px}
.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:#095a50;text-decoration:none;color:#fff}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-lg{padding:14px 26px;font-size:18px}
.btn-sm{padding:7px 14px;font-size:14px;border-radius:8px;background:var(--brand);color:#fff!important}
.btn-sm:hover{text-decoration:none;background:#095a50}
main{max-width:1080px;margin:0 auto;padding:0 20px}
.hero{padding:64px 0 40px;text-align:center}
.hero h1{font-size:clamp(30px,5.2vw,52px);margin:0 0 14px;letter-spacing:-.02em}
.hero h1 em{font-style:normal;color:var(--brand)}
.lede{color:var(--mut);font-size:19px;max-width:720px;margin:0 auto}
.hero-cta{display:flex;gap:14px;justify-content:center;margin:26px 0 10px;flex-wrap:wrap}
.hero-note{color:var(--mut);font-size:14px}
h2{letter-spacing:-.01em}
section{margin:56px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;display:block;color:var(--ink);transition:transform .12s,box-shadow .12s}
.q-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 6px 20px rgba(22,33,58,.08)}
.q-icon{font-size:22px}.q-card p{margin:8px 0 10px;font-size:15.5px}
.q-tag{font-size:12.5px;color:var(--brand2);font-weight:700;text-transform:uppercase;letter-spacing:.04em}
.steps{max-width:760px;font-size:17px}.steps li{margin:14px 0}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px}
.grid-3 h3,.grid-2 h2{margin-bottom:6px}
.band{background:var(--ink);border-radius:calc(var(--r) + 4px);color:#fff;padding:34px;text-align:center;margin:60px 0}
.band-inner{display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap}
.band p{margin:0;font-size:20px;font-weight:700}
.band a.btn-ghost,.band span{color:#cfd8ea}.band span a{color:#fff}
.site-foot{border-top:1px solid var(--line);margin-top:70px;padding:26px 20px 40px;text-align:center;color:var(--mut);font-size:14px}
.ai-note{font-size:12.5px;max-width:680px;margin:8px auto 0;color:#8b97ab}
/* pricing */
.sku-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:18px;align-items:stretch}
.sku{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;position:relative;display:flex;flex-direction:column}
.sku h2{margin:.2em 0 .1em;font-size:21px}
.sku-tag{position:absolute;top:-12px;left:18px;background:var(--brand2);color:#fff;font-size:12px;font-weight:800;padding:3px 10px;border-radius:20px}
.price{font-size:30px;font-weight:800;margin:4px 0 8px}
.was{font-size:17px;color:#a12f8b;text-decoration:line-through;font-weight:600;margin-right:8px;color:#b3b9c6}
.sku-for{color:var(--mut);font-size:14.5px}
.sku ul{padding-left:18px;font-size:14.5px;margin:10px 0}
.incl li::marker{color:var(--brand)}
.not-incl{color:#a4443a}.not-incl li::marker{color:#d9a09a}
.sku .btn{margin-top:auto;text-align:center}
.first-offer{font-size:13px;color:var(--mut);margin:10px 0 0}
.refund-box{background:#f2f8f7;border:1px solid #cfe6e2;border-radius:var(--r);padding:26px;max-width:820px}
.refund-box li{margin:8px 0}
/* ask page */
.ask-grid{display:grid;grid-template-columns:minmax(0,640px) minmax(280px,1fr);gap:26px;align-items:start}
.ask-form{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.ask-form label{display:block;font-weight:700;margin:16px 0 4px;font-size:15px}
.ask-form label em{color:var(--mut);font-weight:500}
.ask-form input[type=text],.ask-form input[type=email],.ask-form textarea,.ask-form select{width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:9px;font:inherit;font-weight:400;background:#fff;margin-top:6px}
.ask-form textarea:focus,.ask-form input:focus,.ask-form select:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:var(--brand)}
.ask-form fieldset{border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;margin:16px 0}
.ask-form legend{font-weight:700;font-size:15px;padding:0 6px}
.radio{display:flex!important;align-items:flex-start;gap:9px;font-weight:500!important;margin:8px 0!important}
.radio input{margin-top:4px}
.muted{color:var(--mut)}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:500!important;font-size:14px;margin-top:18px}
.check input{margin-top:4px;flex-shrink:0}
.check a{text-decoration:underline}
.ask-form button{width:100%;margin-top:20px}
.form-note{font-size:13.5px;color:var(--mut)}
#form-status.ok{color:var(--brand);font-weight:700}#form-status.err{color:#a4443a;font-weight:700}
.scope-preview,.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:18px;font-size:14.5px}
.scope-preview blockquote{margin:10px 0 0;padding:12px;background:#f7f9fc;border-left:3px solid var(--brand);border-radius:6px;font-size:13.5px;line-height:1.55}
.side-card{background:#fff8f3;border-color:#f0dcc9}
/* legal */
.legal{max-width:820px}
.legal h1{margin-top:44px}
.legal h2{margin-top:34px;font-size:21px}
.legal ul{padding-left:22px}
.legal li{margin:7px 0}
/* answers library */
main.answers-main{max-width:860px}
.ans-list{display:grid;gap:16px}
.ans-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.ans-item h3{margin:0 0 6px;font-size:18px}
.ans-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--mut);margin:0 0 10px}
.ans-meta span{background:#f2f5f9;border-radius:20px;padding:2px 10px;font-weight:600}
.ans-ex{font-size:15px;color:#3d4a63;margin:0;line-height:1.65}
.ans-ex+.ans-ex{margin-top:8px;padding-top:8px;border-top:1px dashed var(--line)}
.ans-note{font-size:13px;color:var(--mut);margin:10px 0 0}
@media(max-width:760px){.ask-grid{grid-template-columns:1fr}.hero{padding-top:40px}}
/* Ask 三步流报价面板 */
.quote-panel{margin:14px 0;padding:0;border-radius:10px}
.quote-panel:not(:empty){background:#fff;border:1px solid #d8e2ef;padding:16px 18px}
.quote-panel h3{margin:.2em 0 .4em;font-size:1.05em}
.quote-panel .price{color:#0a6b3d;font-size:1.2em}
.quote-panel input[type=number]{margin-top:6px;padding:8px;border:1px solid #cfd8e3;border-radius:6px}
.quote-panel .scope-preview{background:#f6f8fb;border:1px solid #e3e9f2;border-radius:8px;padding:12px 14px;margin:10px 0}
.quote-panel .small{font-size:.9em}