:root{--ink:#14232b;--muted:#56666e;--brand:#0f3d3e;--brand2:#16595a;--gold:#e8b04a;--gold2:#f6d58e;--bg:#fff;--alt:#f5f7f4;--line:#dde5e3;--ok:#1f7a45;--sup:#9a6a12;--no:#a33a2c;--rem:#2f5f9e;--radius:14px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
h1,h2,h3,h4{line-height:1.22;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.3rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-.01em}
h3{font-size:1.12rem}
p{margin:0 0 1em}
a{color:var(--brand2)}
img{max-width:100%}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.center{text-align:center}
.sub{color:var(--muted);max-width:700px}
.center .sub,.sub.center{margin-left:auto;margin-right:auto}
.section{padding:72px 0}
.section-sm{padding:44px 0}
.alt{background:var(--alt)}
.dark{background:var(--brand);color:#fff}
.dark .sub{color:#cfe0de}
.eyebrow{color:var(--brand2);font-weight:700;text-transform:uppercase;letter-spacing:.09em;font-size:.78rem;margin-bottom:.6em}
.hero .eyebrow,.dark .eyebrow,.page-hero .eyebrow{color:var(--gold)}
.btn{display:inline-block;background:var(--gold);color:#1b1405;font-weight:700;padding:13px 22px;border-radius:10px;text-decoration:none;border:0;cursor:pointer;font-size:1rem;transition:transform .15s,box-shadow .15s;line-height:1.3}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(0,0,0,.14)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.65)}
.btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.btn-sm{padding:8px 15px;font-size:.9rem}
.link-arrow{font-weight:700;text-decoration:none}
.link-arrow::after{content:" →"}
.ph{background:#fff3cd;color:#7a4b00;border:1px dashed #d9a400;border-radius:4px;padding:0 4px;font-weight:600;font-size:.92em;white-space:nowrap}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--brand)}
.brand img{width:36px;height:36px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-size:1.18rem;letter-spacing:.14em}
.brand-text small{font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;gap:22px;align-items:center}
.nav-links a{text-decoration:none;color:var(--ink);font-weight:500;font-size:.94rem}
.nav-links a.active{color:var(--brand2);font-weight:700}
.nav-links a.btn{color:#1b1405}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;cursor:pointer;color:var(--brand)}
/* hero */
.hero{background:linear-gradient(135deg,var(--brand) 0%,#123f4f 60%,#1d5560 100%);color:#fff;padding:80px 0 88px}
.hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:52px;align-items:center}
.hero .tagline-small{font-size:.95rem;letter-spacing:.06em;color:var(--gold2);font-weight:600;margin-bottom:.4em}
.lead{font-size:1.18rem;color:#dbe9e7;max-width:600px}
.support{color:#bcd3d0;max-width:600px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 0}
.hero-card{background:#fff;color:var(--ink);border-radius:var(--radius);padding:22px;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.hero-card h3{font-size:1rem;margin-bottom:4px}
.hero-card .muted{font-size:.85rem}
.hc-row{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--line);font-size:.92rem}
.page-hero{background:linear-gradient(135deg,var(--brand) 0%,#164b55 100%);color:#fff;padding:60px 0 56px}
.page-hero .lead{max-width:760px}
.crumbs{font-size:.85rem;color:#a9c6c2;margin-bottom:14px}
.crumbs a{color:#d6e7e4}
.muted{color:var(--muted)}
/* status badges */
.st{display:inline-block;font-size:.76rem;font-weight:700;padding:3px 9px;border-radius:999px;white-space:nowrap;border:1px solid}
.st-v{color:var(--ok);background:#e7f5ec;border-color:#b5dec4}
.st-s{color:var(--sup);background:#fdf3df;border-color:#efd59a}
.st-n{color:var(--no);background:#fbe9e6;border-color:#efc1b9}
.st-r{color:var(--rem);background:#e8f0fb;border-color:#bcd0ee}
/* grids & cards */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column}
.card p{color:var(--muted);font-size:.95rem}
.card .link-arrow{margin-top:auto}
.card .tag{align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:3px 8px;border-radius:6px;background:#e5efed;color:var(--brand2);margin-bottom:12px}
.card .tag.ext{background:#f1ede4;color:#7a5a1a}
.card ul{padding-left:18px;margin:0 0 1em;color:var(--muted);font-size:.93rem}
.icon{width:42px;height:42px;border-radius:10px;background:#e5efed;display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:12px}
.five{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:f}
.five div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.five strong{display:block;color:var(--brand);margin-bottom:4px}
.five span{font-size:.9rem;color:var(--muted)}
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(6,1fr);gap:14px;counter-reset:s}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 16px;font-size:.92rem;color:var(--muted)}
.steps li::before{content:counter(s);display:flex;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;align-items:center;justify-content:center;margin-bottom:10px}
.steps li strong{display:block;color:var(--ink);margin-bottom:4px;font-size:.98rem}
.steps.vertical{grid-template-columns:1fr}
.steps.vertical li{display:grid;grid-template-columns:44px 1fr;column-gap:12px}
.steps.vertical li::before{grid-row:1/span 2;margin:0}
table.t{width:100%;border-collapse:collapse;font-size:.93rem;background:#fff}
table.t th,table.t td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
table.t th{background:#eef3f2;color:var(--brand);font-weight:700}
.table-wrap{overflow-x:auto;border-radius:10px}
.note{border-left:4px solid var(--gold);background:#fffaf0;padding:14px 18px;border-radius:0 10px 10px 0;margin:18px 0;font-size:.95rem}
.note.blue{border-color:var(--rem);background:#f2f6fc}
.check{list-style:none;padding:0;margin:0}
.check li{padding:7px 0 7px 30px;position:relative;border-bottom:1px dashed var(--line)}
.check li::before{content:"✓";position:absolute;left:4px;color:var(--ok);font-weight:800}
.cross li::before{content:"✕";color:var(--no)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.split-form{grid-template-columns:1.6fr 1fr}
.demo-label{display:inline-block;background:#fbe9e6;color:var(--no);border:1px solid #efc1b9;font-weight:700;font-size:.78rem;padding:4px 10px;border-radius:6px;letter-spacing:.02em}
.report-card .thumb{height:150px;border-radius:10px;background:repeating-linear-gradient(-30deg,#f7f3ea 0 18px,#fbf8f1 18px 36px);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:#b79a5c;font-weight:800;letter-spacing:.12em;font-size:.8rem;margin-bottom:14px;text-align:center}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
/* service page */
.svc-section{padding:46px 0;border-bottom:1px solid var(--line)}
.svc-section:last-of-type{border-bottom:0}
.svc-num{font-size:.78rem;font-weight:800;color:var(--gold);letter-spacing:.1em;text-transform:uppercase}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.toc a{color:#d6e7e4;font-size:.85rem;text-decoration:none;border:1px solid rgba(255,255,255,.3);padding:5px 10px;border-radius:999px}
.quote-box{background:var(--alt);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
/* form */
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form label{display:block;font-weight:600;font-size:.92rem;margin:14px 0 6px}
.form label .opt{font-weight:400;color:var(--muted)}
.form input,.form select,.form textarea{width:100%;padding:11px 12px;border:1px solid #c9d5d2;border-radius:8px;font:inherit;font-size:.95rem;background:#fff}
.form textarea{min-height:110px;resize:vertical}
.form .radios{display:flex;gap:18px;flex-wrap:wrap}
.form .radios label,.form .consent{font-weight:400;display:flex;gap:8px;align-items:flex-start;margin:6px 0}
.form .radios input,.form .consent input{width:auto;margin-top:5px}
.form .hint{font-size:.82rem;color:var(--muted);margin-top:4px}
.hp{position:absolute;left:-5000px;width:1px;height:1px;overflow:hidden}
.form-msg{margin-top:14px;padding:12px 14px;border-radius:8px;background:#e7f5ec;color:var(--ok);font-weight:600}
.form-msg.err{background:#fbe9e6;color:var(--no)}
/* prose */
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.3em}
.prose ul{padding-left:20px}
/* footer */
.site-footer{background:#0b2a2b;color:#b9cdca;padding:52px 0 26px;font-size:.92rem}
.site-footer a{color:#e4efed;text-decoration:none}
.f-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:30px}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:5px 0}
.f-bottom{border-top:1px solid #1e4344;margin-top:34px;padding-top:18px;font-size:.82rem;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-footer .ph{background:#3a3115;color:#ffd977;border-color:#8a6d1c}
/* responsive */
@media (max-width:1000px){.steps{grid-template-columns:repeat(3,1fr)}.five{grid-template-columns:repeat(2,1fr)}.g4{grid-template-columns:repeat(2,1fr)}.f-grid{grid-template-columns:1fr 1fr}}
@media (max-width:860px){
 .nav-toggle{display:block}
 .nav-links{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;gap:4px;border-bottom:1px solid var(--line);box-shadow:0 10px 20px rgba(0,0,0,.06)}
 .nav-links.open{display:flex}
 .nav-links a{padding:10px 0}
 .nav-links a.btn{text-align:center;padding:12px}
 .hero-grid,.split,.g2,.g3{grid-template-columns:1fr}
 .hero{padding:52px 0 60px}
 .section{padding:54px 0}
 .form .row{grid-template-columns:1fr}
}
@media (max-width:560px){.steps,.five,.g4,.f-grid{grid-template-columns:1fr}.hero-cta .btn{width:100%;text-align:center}body{font-size:15.5px}}
/* trust/evidence update 2026-11-01 */
.evidence-band{background:#fffaf0;border-top:1px solid #f1e3c4;border-bottom:1px solid #f1e3c4}
.ev-types{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:26px}
.ev-types div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.ev-types strong{display:block;color:var(--brand);margin:6px 0 4px}
.ev-types span{font-size:.9rem;color:var(--muted)}
.ev-types .ev-ic{display:block;font-size:1.5rem;color:inherit}
.toc.toc-light{margin:0 0 28px}
.toc.toc-light a{color:var(--brand);border-color:var(--line);background:#fff}
@media (max-width:1000px){.ev-types{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.ev-types{grid-template-columns:1fr}}
/* due-diligence limitation of liability (2026-11-01) */
.liab-box{border:2px solid var(--gold);background:#fffaf0;border-radius:var(--radius);padding:22px 24px;margin:34px 0;scroll-margin-top:90px}
.liab-box h2{margin-top:0}
.liab-list{padding-left:20px}.liab-list li{margin:8px 0}
.liab-line{font-size:.85rem;color:#56666e;margin:14px 0 0;line-height:1.5}
.liab-ack{margin-top:14px}
.f-liab{font-size:.8rem;color:#9fb8b4;margin:14px 0 0;line-height:1.5}
.f-liab a{color:#cfe0dd;text-decoration:underline}
#liability{scroll-margin-top:90px}

/* guides / articles 2026-11-01 */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.guide-card .meta{font-size:.82rem;color:var(--muted);margin:0 0 8px}
.guide-card h3{font-size:1.15rem;margin:0 0 10px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:.9rem;color:var(--muted);margin:8px 0 18px}
.prose .lede{font-size:1.12rem;line-height:1.65;color:#24363a}
.prose .callout{background:var(--alt);border-left:4px solid var(--brand);padding:14px 16px;border-radius:0 10px 10px 0;margin:18px 0}
.prose .callout.warn{background:#fffaf0;border-left-color:var(--gold)}
.prose ol{padding-left:22px}
.prose li{margin:6px 0}
.related-guides{margin-top:28px;padding:18px;border:1px solid var(--line);border-radius:12px;background:#fff}
.related-guides h3{margin:0 0 10px;font-size:1.05rem}
.related-guides ul{margin:0;padding-left:18px}
@media (max-width:1000px){.guide-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.guide-grid{grid-template-columns:1fr}}