:root{
  --bg-main:#F9F8F6;--text-primary:#111827;--text-secondary:#4B5563;--text-tertiary:#9CA3AF;
  --bg-dark:#17202A;--text-dark-primary:#F9FAFB;--text-dark-secondary:#9CA3AF;
  --accent-gold:#C58229;--accent-gold-hover:#D97706;--accent-gold-text:#8A5410;
  --border-light:rgba(17,24,39,.08);--border-dark:rgba(255,255,255,.1);--border-menu:#D9DDD9;
  --surface-hover:rgba(17,24,39,.035);--text-on-brand-secondary:rgba(249,250,251,.82);
  --surface:#FFFFFF;--brand-slate:#364A5A;--teal:#083D4A;--green:#2F7D6D;
  --paper:var(--bg-main);--ink:var(--text-primary);--slate:var(--brand-slate);--amber:var(--accent-gold);
  --line:var(--border-light);--muted:var(--text-secondary);--white:var(--text-dark-primary);
  --serif:"Songti SC","STSong","Noto Serif SC",serif;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SFMono-Regular",Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 var(--sans);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;cursor:pointer}button,a{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}h1,h2,h3,p,figure,ol{margin:0}ol{padding:0;list-style:none}
h1,h2{font-family:var(--serif);font-weight:600;letter-spacing:-.045em}h2{font-size:clamp(42px,4vw,58px);line-height:1.18}
button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--amber);outline-offset:5px}
.skip-link{position:absolute;left:24px;top:-80px;background:var(--white);padding:10px 14px;z-index:20}.skip-link:focus{top:12px}
.shell{width:min(1248px,calc(100% - 128px));margin-inline:auto}
.site-header{position:relative;z-index:20;height:92px;border-bottom:1px solid var(--slate);display:flex;align-items:center;gap:40px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:24px;font-weight:650;letter-spacing:.12em;white-space:nowrap}
.brand:before{content:"";display:block;width:160px;height:38px;background:url("assets/answer-hand-logo.png") center/100% 100% no-repeat}
.brand-icon,.brand-copy{display:none}
.footer-brand .brand:before{width:132px;height:31px}
.brand-copy{width:108px;height:36px;display:flex;flex-direction:column;justify-content:space-between;line-height:1}.brand-copy strong{display:flex;justify-content:space-between;align-items:flex-start;font:inherit;line-height:1;letter-spacing:0}.brand-copy strong i{font-style:normal}.brand-copy small{width:88%;margin-inline:6%;display:flex;justify-content:space-between;color:var(--text-secondary);font:500 8px/1 var(--sans);letter-spacing:0}.brand-copy small span{display:block;line-height:1}.brand-copy small span:nth-child(7){margin-left:.45em}
.brand-icon{position:relative;display:block;width:48px;height:36px;overflow:hidden;flex:none}
.brand-icon img{position:absolute;width:48px;height:48px;left:-1px;top:-9px;object-fit:contain}
.brand>.brand-icon,.brand>.brand-copy{display:none}
@media(max-width:1023px){.brand:before{width:128px;height:30px}.footer-brand .brand:before{width:118px;height:28px}}
.site-header nav{display:flex;align-items:stretch;gap:28px;margin-left:auto;font-size:14px;color:var(--muted)}
.nav-item{position:relative;display:flex;align-items:center}.nav-link,.nav-trigger{position:relative;min-height:44px;display:inline-flex;align-items:center;border:0;background:none;padding:0;color:var(--text-secondary);font:inherit;white-space:nowrap;transition:color .18s ease}.nav-link:after,.nav-trigger:after{content:"";position:absolute;left:0;right:0;bottom:3px;height:1px;background:var(--accent-gold);transform:scaleX(0);transform-origin:left;transition:transform .18s ease}.nav-link:hover,.nav-link:focus-visible,.nav-trigger:hover,.nav-trigger:focus-visible{color:var(--text-primary)}.nav-link:hover:after,.nav-link:focus-visible:after,.nav-trigger:hover:after,.nav-trigger:focus-visible:after,.has-dropdown.is-open .nav-trigger:after{transform:scaleX(1)}.nav-trigger span{margin-left:7px;color:var(--text-tertiary);font-size:11px;transition:transform .2s ease}.has-dropdown:hover .nav-trigger span,.has-dropdown:focus-within .nav-trigger span,.has-dropdown.is-open .nav-trigger span{transform:rotate(180deg)}
.nav-dropdown{position:absolute;top:calc(100% + 12px);left:-24px;z-index:30;background:var(--surface);border:1px solid var(--border-menu);box-shadow:0 10px 30px rgba(0,0,0,.04);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(4px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
.nav-dropdown:before{content:"";position:absolute;left:0;right:0;top:-13px;height:13px}.has-dropdown:hover .nav-dropdown,.has-dropdown:focus-within .nav-dropdown,.has-dropdown.is-open .nav-dropdown{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
.services-menu{width:500px;padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:32px}.dropdown-column+.dropdown-column{border-left:1px solid var(--border-light);padding-left:32px}.dropdown-column>p,.dropdown-note{margin:0 0 12px;font-size:11px;line-height:1.5;letter-spacing:.14em;color:var(--text-tertiary)}.dropdown-column>a,.technology-menu>a{position:relative;display:flex;align-items:center;min-height:36px;padding:7px 8px 7px 12px;color:var(--text-secondary);font-size:13px;line-height:1.5;transition:color .18s ease,background-color .18s ease}.dropdown-column>a:before,.technology-menu>a:before{content:"";position:absolute;left:0;width:2px;height:12px;background:transparent;transition:background-color .18s ease}.dropdown-column>a:hover,.dropdown-column>a:focus-visible,.technology-menu>a:hover,.technology-menu>a:focus-visible{color:var(--accent-gold-text);background:rgba(197,130,41,.045)}.dropdown-column>a:hover:before,.dropdown-column>a:focus-visible:before,.technology-menu>a:hover:before,.technology-menu>a:focus-visible:before{background:var(--accent-gold)}
.dropdown-column>a{display:grid;align-items:start;gap:1px}.dropdown-column>a strong{font-weight:500}.dropdown-column>a small{font-size:10px;line-height:1.45;color:var(--text-tertiary)}.dropdown-column>a:hover small,.dropdown-column>a:focus-visible small{color:inherit}
.technology-menu{width:310px;padding:22px 24px}.technology-menu>a{display:grid;grid-template-columns:52px 1fr}.technology-menu strong{font:600 12px var(--mono);color:inherit}.technology-menu span{color:inherit}.dropdown-note{font-size:11px;letter-spacing:.04em;border-bottom:1px solid var(--border-light);padding-bottom:12px;margin-bottom:6px}
.header-action,.menu-toggle{border:0;background:none;padding:10px 0}.header-action{font-size:14px;border-bottom:1px solid var(--amber)}.header-action span{margin-left:24px}.menu-toggle{display:none}
.hero{min-height:calc(100vh - 92px);display:grid;grid-template-columns:7fr 5fr;column-gap:8.333%;grid-template-rows:1fr auto;padding-top:88px}
.hero-copy{align-self:start;padding-bottom:56px}.eyebrow,.section-kicker{font-size:12px;font-weight:650;letter-spacing:.22em;color:var(--slate);margin-bottom:24px}
.hero h1{font-size:clamp(74px,7vw,98px);line-height:.98}.hero-lead{font:600 23px/1.62 var(--serif);margin-top:36px;color:var(--slate)}
.hero-body{max-width:590px;margin-top:22px;color:var(--muted);font-size:16px;line-height:1.85}.hero-actions{display:flex;align-items:center;gap:34px;margin-top:32px}
.button{min-height:52px;border:1px solid var(--slate);padding:12px 22px;display:inline-flex;align-items:center;justify-content:space-between;gap:42px;background:transparent;border-radius:5px;transition:transform .18s ease,background-color .18s ease,color .18s ease}
.button.primary{background:var(--slate);color:var(--white)}.button.secondary{color:var(--slate)}.button:hover{transform:translateY(-2px)}.button:active{transform:translateY(0)}
.text-link{display:inline-flex;align-items:center;gap:20px;border:0;border-bottom:1px solid var(--line);background:none;padding:10px 0;font-size:14px}.text-link:hover{border-color:var(--amber)}
.hero-system{align-self:start;position:relative;margin-top:45px;padding:0 0 30px 48px;border-left:1px solid var(--line)}
.system-label{font-size:13px;color:var(--muted);margin-bottom:12px}.hero-tags{display:flex;flex-wrap:wrap;gap:7px 16px;margin:0 0 22px;padding:0;list-style:none}.hero-tags li{font-size:10px;letter-spacing:.18em;color:var(--slate)}.hero-tags li:before{content:"···";margin-right:5px;color:var(--amber);letter-spacing:-.08em}
.relation-list{border-top:1px solid var(--slate)}.relation-list li{border-bottom:1px solid var(--line)}.relation-list a{position:relative;display:grid;grid-template-columns:42px 1fr;align-items:center;min-height:62px;padding:10px 20px 10px 0;transition:background-color .18s ease,box-shadow .18s ease,padding .18s ease}.relation-list a:after{content:"";position:absolute;right:0;top:0;bottom:0;width:2px;background:transparent;transition:background-color .18s ease}.relation-list a>span{font:11px var(--mono);color:var(--amber)}.relation-list strong{font:500 21px/1.4 var(--serif);transition:transform .18s ease}.relation-list small{position:absolute;left:56px;top:39px;opacity:0;color:var(--muted);font-size:11px;line-height:1.4;transition:opacity .18s ease}.relation-list a:hover,.relation-list a:focus-visible{padding-left:14px;background:var(--surface);box-shadow:0 4px 20px rgba(0,0,0,.03)}.relation-list a:hover:after,.relation-list a:focus-visible:after{background:var(--accent-gold)}.relation-list a:hover strong,.relation-list a:focus-visible strong{transform:translateY(-8px)}.relation-list a:hover small,.relation-list a:focus-visible small{opacity:1}
.trust-line{font-size:12px;color:rgba(17,24,39,.6);margin-top:28px}.trust-license{display:inline-flex;align-items:center;gap:7px}.trust-license svg{width:12px;height:12px;fill:none;stroke:var(--green);stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round;flex:none}.trust-line strong{color:inherit;font-weight:600}
.hero-footer{grid-column:1/-1;border-top:1px solid var(--slate);display:flex;justify-content:space-between;padding:20px 0;font-size:12px;color:var(--muted);letter-spacing:.06em}
.section{padding-block:112px}.section-intro{display:grid;grid-template-columns:4fr 5fr 3fr;gap:32px;align-items:end;margin-bottom:50px}.section-intro .section-kicker{align-self:start}.section-intro h2{grid-column:2;font-size:clamp(40px,3.5vw,52px)}.section-intro>p:last-child{grid-column:3;color:var(--muted);font-size:15px}
.capability-workbench{display:grid;grid-template-columns:7fr 5fr;gap:8.333%;align-items:start}.service-list{border-top:1px solid var(--slate)}.service-list button{position:relative;width:100%;display:grid;grid-template-columns:48px 2.4fr 4fr 24px;gap:18px;align-items:center;text-align:left;border:0;border-bottom:1px solid var(--line);background:none;padding:25px 0;transition:background-color .18s ease,padding .18s ease}.service-list button:hover{background:var(--surface-hover);padding-left:12px}.service-list button[aria-selected=true]{background:var(--surface);padding-left:12px;box-shadow:inset 2px 0 0 var(--accent-gold)}.service-list .index{font:12px var(--mono);color:var(--muted)}.service-list button[aria-selected=true] .index{color:var(--accent-gold-text)}.service-list strong{font:600 25px/1.4 var(--serif);color:var(--slate)}.service-list button>span:nth-child(3){color:var(--muted);font-size:14px}.service-list i{font-style:normal;font-size:18px;transition:transform .18s ease}.service-list button:hover i,.service-list button[aria-selected=true] i{transform:translateX(4px);color:var(--accent-gold-text)}
.scenario-panel{position:sticky;top:32px;border-top:2px solid var(--amber);padding:28px 0 0 32px;min-height:390px;transition:opacity .2s ease}.scenario-panel.is-changing{opacity:.55}.scenario-label{font-size:11px;letter-spacing:.18em;color:var(--muted)}.scenario-index{display:block;font:12px var(--mono);color:var(--amber);margin-top:52px}.scenario-panel h3{font:600 34px/1.3 var(--serif);color:var(--slate);margin-top:12px}.scenario-panel>p:not(.scenario-label){color:var(--muted);font-size:14px;margin-top:18px}.scenario-panel ul{list-style:none;margin:28px 0 0;padding:0;border-top:1px solid var(--slate)}.scenario-panel li{padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}.scenario-panel li:before{content:"—";color:var(--amber);margin-right:12px}
.service-note{margin-top:26px;max-width:720px;color:var(--muted);font-size:14px}
.collaboration{background:var(--slate);color:var(--text-dark-primary);padding-block:120px}.section-kicker.light{color:var(--text-on-brand-secondary)}.collaboration h2,.technology h2{color:var(--text-dark-primary)}
.collaboration-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px 100px}.collaboration-copy{align-self:end;color:var(--text-on-brand-secondary);font-size:17px}.collaboration-copy p+p{margin-top:20px}.principles{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--border-dark);margin-top:20px}.principles li{padding:34px 28px 12px 0;border-right:1px solid var(--border-dark)}.principles li+li{padding-left:28px}.principles li:last-child{border:0}.principles span{display:block;font:11px var(--mono);color:var(--text-on-brand-secondary);margin-bottom:30px}.principles strong{font:600 30px/1.3 var(--serif)}
.technology{position:relative;background-color:var(--bg-dark);background-image:radial-gradient(circle at 50% 0%,#1E293B 0%,#0F172A 100%);color:var(--text-dark-primary);padding-block:116px;overflow:hidden;border-top:1px solid var(--border-light)}.technology-head{display:grid;grid-template-columns:7fr 4fr;gap:8.333%;align-items:end}.technology-head>p{color:var(--text-dark-secondary);max-width:440px}.product-gallery{margin-top:72px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.product{min-width:0}.product-copy{display:grid;grid-template-columns:28px 112px 1fr;align-items:start;gap:12px;margin-bottom:18px;min-height:82px}.product-copy>span{font:11px var(--mono);color:var(--text-dark-secondary);margin-top:8px}.product-copy h3{font-size:30px;line-height:1.1;letter-spacing:.02em}.product-copy b{display:block;font-size:10px;letter-spacing:.12em;color:var(--text-dark-secondary);margin-top:7px;font-weight:500}.product-copy p{color:var(--text-dark-secondary);font-size:12px;line-height:1.6;padding-top:4px}.app-window{overflow:hidden;background:rgba(255,255,255,.035);border:1px solid var(--border-dark);border-radius:8px;backdrop-filter:blur(10px);box-shadow:0 16px 32px rgba(0,0,0,.12)}.window-bar{height:34px;display:flex;align-items:center;gap:6px;padding:0 11px;border-bottom:1px solid var(--border-dark);color:var(--text-dark-secondary);font:9px var(--mono)}.window-bar i{width:5px;height:5px;border-radius:50%;background:rgba(255,255,255,.24)}.window-bar span{margin-left:6px}.window-viewport{aspect-ratio:1.46;overflow:hidden;background:#E9ECEC}.product img{display:block;width:100%;height:100%;object-fit:cover}.product-crm img{object-position:28% top}.product-geo img{object-position:24% top}.product-risk img{object-position:left center}.gallery-indicator{display:none}.technology-note{border-top:1px solid var(--border-dark);margin-top:64px;padding-top:24px;color:var(--text-dark-secondary);font-size:14px}
.product-download{display:flex;justify-content:space-between;align-items:center;min-height:44px;margin-top:12px;padding:0 2px;border-bottom:1px solid var(--border-dark);color:var(--text-dark-secondary);font-size:12px;transition:color .18s ease,border-color .18s ease}.product-download:hover,.product-download:focus-visible{color:var(--text-dark-primary);border-color:var(--accent-gold)}.product-download span{color:var(--accent-gold)}
@media(max-width:680px){.product-download{margin-top:10px}}
.value{display:grid;grid-template-columns:5fr 6fr;gap:8.333%;position:relative}.value-copy h2,.position-grid h2{font-size:clamp(40px,3.5vw,50px)}.value-copy>p:not(.section-kicker):not(.value-lead){color:var(--muted);max-width:520px;margin-top:24px}.value-lead{font:600 26px/1.55 var(--serif);color:var(--slate);margin-top:34px}.rule-toggle{margin-top:24px}
.value-ledger{align-self:start;border-top:2px solid var(--amber);padding-top:20px}.ledger-label{font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:16px}.value-path{border-top:1px solid var(--slate)}.value-path li{display:grid;grid-template-columns:54px 1fr;align-items:center;border-bottom:1px solid var(--line);padding:24px 0}.value-path span{font:12px var(--mono);color:var(--muted)}.value-path strong{font:600 28px/1.4 var(--serif);color:var(--slate)}.possible-result{margin-top:26px;color:var(--slate)}.possible-result small{color:var(--muted)}.rules{grid-column:1/-1;border-top:1px solid var(--line);margin-top:32px;padding-top:24px;color:var(--muted);max-width:760px}
.position{border-top:1px solid var(--line)}.position-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px}.position-grid>div{border-top:1px solid var(--slate)}.position-grid>div p{padding:22px 0;border-bottom:1px solid var(--line);font-size:18px}.final-line{font:600 clamp(50px,5.4vw,76px)/1.15 var(--serif);color:var(--slate);margin-top:112px;letter-spacing:-.05em}
.insights-preview{border-top:1px solid var(--line)}.insights-preview-head{display:grid;grid-template-columns:7fr 4fr;gap:8.333%;align-items:end}.insights-preview-head h2{font-size:clamp(40px,3.5vw,52px)}.insights-preview-head>p{color:var(--muted);max-width:430px}.insight-index{margin:58px 0 0;padding:0;list-style:none;border-top:1px solid var(--slate)}.insight-index li{border-bottom:1px solid var(--line)}.insight-index a{display:grid;grid-template-columns:52px minmax(320px,1.55fr) 1fr 24px;gap:24px;align-items:center;padding:28px 0;transition:padding .18s ease,background-color .18s ease}.insight-index a:hover{padding-left:12px;background:var(--surface-hover)}.insight-no{font:12px var(--mono);color:var(--accent-gold-text)}.insight-index small{display:block;color:var(--text-tertiary);font-size:11px;letter-spacing:.08em;margin-bottom:6px}.insight-index h3{font:600 24px/1.4 var(--serif);color:var(--slate)}.insight-index p{font-size:14px;color:var(--muted)}.insight-index i{font-style:normal;color:var(--amber);font-size:18px}.insights-all{display:inline-flex;gap:28px;margin-top:28px;padding-bottom:8px;border-bottom:1px solid var(--line);font-size:14px}.insights-all:hover{border-color:var(--amber)}
.contact{border-top:1px solid var(--slate);display:grid;grid-template-columns:1fr 1fr;gap:80px;padding-block:80px}.contact h2{font-size:42px}.contact-copy{max-width:520px;margin-top:20px;color:var(--muted);font-size:15px}.contact-actions{align-self:end}.contact-actions .button+.button{margin-left:10px}.contact-actions>p{font-size:12px;color:var(--muted);margin-top:22px}.contact-facts{margin:28px 0 0;border-top:1px solid var(--line)}.contact-facts>div{display:grid;grid-template-columns:96px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}.contact-facts dt{color:var(--text-tertiary)}.contact-facts dd{margin:0;color:var(--slate)}.contact-facts a{border-bottom:1px solid var(--line)}
.site-footer{border-top:1px solid var(--line);padding:34px 0 42px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:end}.footer-brand .brand{font-size:20px}.footer-brand .brand-icon{width:40px;height:30px}.footer-brand .brand-icon img{width:40px;height:40px;top:-8px;left:-1px}.footer-brand .brand-copy{width:90px;height:30px}.footer-brand .brand-copy small{font-size:7px}.footer-brand>p,.footer-actions{font-size:12px;color:var(--muted)}.footer-brand>p{margin-top:14px}.footer-actions a,.footer-actions button{width:max-content;border:0;border-bottom:1px solid transparent;background:none;padding:0;color:inherit}.footer-actions a:hover,.footer-actions button:hover{color:var(--ink);border-color:var(--amber)}.footer-actions{display:grid;justify-items:end;gap:8px}
dialog{width:min(560px,calc(100% - 40px));border:1px solid var(--slate);background:var(--white);padding:30px;color:var(--ink);border-radius:6px}dialog::backdrop{background:rgba(15,27,33,.62)}.dialog-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:24px}.dialog-head h2{font-size:30px}.dialog-head button{border:0;background:none;padding:8px}.dialog-note{font-size:13px;color:var(--muted);margin-top:20px}dialog>.button{margin-top:24px}.contact-dialog{width:min(720px,calc(100% - 40px))}.contact-dialog-grid{display:grid;grid-template-columns:1fr 230px;gap:34px;align-items:start}.dialog-label{font-size:11px;letter-spacing:.16em;color:var(--text-tertiary)}.contact-person h3{font:600 38px/1.2 var(--serif);margin-top:10px;color:var(--slate)}.contact-phone{display:block;width:max-content;margin:10px 0 24px;font:600 22px/1.4 var(--serif);color:var(--slate);border-bottom:1px solid var(--amber)}.contact-person>p:not(.dialog-label){color:var(--muted);font-size:14px;margin-top:10px}.wechat-card{border:1px solid var(--line);background:var(--paper);padding:10px}.wechat-card img{display:block;width:100%;height:auto}.wechat-card figcaption{text-align:center;margin-top:8px;color:var(--muted);font-size:11px}.privacy-copy p{font-size:14px;color:var(--muted)}.privacy-copy p+p{margin-top:14px}

/* 经营参考：沿用首页的纸张、网格与细线语言，文章页减少交互装饰。 */
.insight-page{background:var(--bg-main)}.insight-site-header{background:rgba(249,248,246,.96)}.insight-site-header .nav-link.is-current{color:var(--accent-gold-text)}
.insights-hero{padding-top:100px;padding-bottom:92px;border-bottom:1px solid var(--slate)}.insights-hero-grid{display:grid;grid-template-columns:7fr 4fr;gap:8.333%;align-items:end}.insights-hero h1{font:600 clamp(62px,7vw,104px)/1.05 var(--serif);letter-spacing:-.065em;color:var(--slate)}.insights-hero-grid>div{border-top:1px solid var(--line);padding-top:22px;color:var(--muted);font-size:16px}.insights-hero-grid>div p+p{margin-top:8px}.insights-listing{padding-block:88px 112px}.listing-intro{display:grid;grid-template-columns:4fr 8fr;gap:32px}.listing-intro h2{font-size:clamp(38px,3.5vw,50px)}.insight-index-page{margin-top:58px}.insight-index-page h2{font:600 26px/1.35 var(--serif);color:var(--slate)}.insights-method{display:grid;grid-template-columns:4fr 8fr;gap:32px;border-block:1px solid var(--line);padding-block:34px;margin-bottom:88px}.insights-method span{font-size:11px;letter-spacing:.16em;color:var(--text-tertiary)}.insights-method p{max-width:760px;color:var(--muted);font-size:14px}.insight-footer{margin-top:0}
.article-hero{padding-top:58px;padding-bottom:76px;border-bottom:1px solid var(--slate)}.article-back{display:inline-flex;min-height:44px;align-items:center;color:var(--muted);font-size:13px;border-bottom:1px solid transparent}.article-back:hover{color:var(--slate);border-color:var(--amber)}.article-hero-grid{display:grid;grid-template-columns:3fr 9fr;gap:32px;margin-top:52px}.article-meta{display:flex;gap:24px;align-items:flex-start;color:var(--muted);font-size:12px;line-height:1.8}.article-meta>span{font:12px var(--mono);color:var(--accent-gold-text)}.article-hero h1{max-width:940px;font:600 clamp(48px,5.6vw,76px)/1.16 var(--serif);letter-spacing:-.045em;color:var(--slate)}.article-lede{max-width:760px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line);font:500 21px/1.85 var(--serif);color:var(--muted)}.article-layout{display:grid;grid-template-columns:3fr 9fr;gap:32px;padding-block:72px 104px}.article-rail{align-self:start;position:sticky;top:32px;color:var(--text-tertiary);font-size:11px;letter-spacing:.12em}.article-rail p{color:var(--slate);font:600 20px/1.5 var(--serif);letter-spacing:0;margin-bottom:18px}.article-body{max-width:760px}.article-body>section+section{margin-top:58px}.article-body h2{font-size:30px;line-height:1.45;color:var(--slate);margin-bottom:20px}.article-body p{font-size:17px;line-height:2;color:#374151}.article-body p+p{margin-top:16px}.article-body ul{list-style:none;margin:24px 0 0;padding:0;border-top:1px solid var(--slate)}.article-body li{position:relative;padding:15px 0 15px 26px;border-bottom:1px solid var(--line);font-size:16px;line-height:1.8;color:#374151}.article-body li:before{content:"—";position:absolute;left:0;color:var(--amber)}.article-note{margin-top:64px;padding:24px 28px;border-left:2px solid var(--amber);background:var(--surface)}.article-note strong{display:block;font-size:12px;letter-spacing:.12em;color:var(--accent-gold-text);margin-bottom:10px}.article-note p{font-size:14px;color:var(--muted);line-height:1.8}.article-sources{margin-top:64px!important;padding-top:32px;border-top:1px solid var(--slate)}.article-sources h2{font-size:22px}.article-sources ol{margin:0;padding:0;list-style:none}.article-sources li{padding-left:0;font-size:14px}.article-sources li:before{display:none}.article-sources a{display:flex;justify-content:space-between;gap:20px;color:var(--muted)}.article-sources a:hover{color:var(--accent-gold-text)}.article-sources>p{font-size:12px;color:var(--text-tertiary);margin-top:18px}.related-insights{border-top:1px solid var(--slate);padding-block:72px}.related-insights ul{list-style:none;margin:32px 0 0;padding:0;border-top:1px solid var(--line)}.related-insights li{border-bottom:1px solid var(--line)}.related-insights a{display:grid;grid-template-columns:140px 1fr 24px;gap:24px;align-items:center;padding:22px 0}.related-insights span{font-size:12px;color:var(--text-tertiary)}.related-insights strong{font:600 22px/1.45 var(--serif);color:var(--slate)}.related-insights i{font-style:normal;color:var(--amber)}.article-contact{display:grid;grid-template-columns:1fr 1fr;gap:80px;border-top:1px solid var(--line);padding-block:78px}.article-contact h2{font-size:42px}.article-contact>div:last-child{align-self:end}.article-contact>div:last-child p{color:var(--muted);font-size:14px;max-width:480px;margin-bottom:24px}

/* 二级服务说明页：复用首页纸张、网格、细线与 CTA，不建立新的视觉体系。 */
.service-page{background:var(--bg-main)}.detail-hero{padding-block:100px 92px;border-bottom:1px solid var(--slate)}.detail-hero-grid{display:grid;grid-template-columns:7fr 4fr;gap:8.333%;align-items:end}.detail-hero h1{font:600 clamp(62px,7vw,104px)/1.05 var(--serif);letter-spacing:-.065em;color:var(--slate)}.detail-hero-grid>div{border-top:1px solid var(--line);padding-top:22px;color:var(--muted);font-size:16px}.detail-hero-grid .text-link{margin-top:26px}.detail-section{padding-block:104px}.detail-section-intro{display:grid;grid-template-columns:4fr 5fr 3fr;gap:32px;align-items:end;margin-bottom:54px}.detail-section-intro .section-kicker{align-self:start}.detail-section-intro h2{grid-column:2;font-size:clamp(40px,3.5vw,52px)}.detail-section-intro>p:last-child{grid-column:3;color:var(--muted);font-size:15px}.detail-index{margin:0;padding:0;list-style:none;border-top:1px solid var(--slate)}.detail-index>li,.detail-index>div{display:grid;grid-template-columns:64px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--line)}.detail-index>li>span,.detail-index>div>span{font:12px var(--mono);color:var(--accent-gold-text);padding-top:7px}.detail-index h3{font:600 27px/1.35 var(--serif);color:var(--slate)}.detail-index p{margin-top:8px;color:var(--muted);font-size:15px}.section-surface{background:var(--surface)}.detail-two-column,.detail-split,.detail-rule-entry{display:grid;grid-template-columns:1fr 1fr;gap:8.333%}.detail-label{font:11px var(--mono);letter-spacing:.16em;color:var(--accent-gold-text);margin-bottom:20px}.detail-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--slate)}.detail-list li{position:relative;padding:15px 0 15px 26px;border-bottom:1px solid var(--line);font-size:16px;line-height:1.8;color:var(--text-secondary)}.detail-list li:before{content:"—";position:absolute;left:0;color:var(--amber)}.detail-note{color:var(--muted);font-size:16px;line-height:1.85}.process-list,.value-flow{margin:0;padding:0;list-style:none;border-top:1px solid var(--slate)}.process-list li,.value-flow li{display:grid;grid-template-columns:64px 1fr 1.3fr;gap:24px;align-items:center;padding:25px 0;border-bottom:1px solid var(--line)}.process-list span,.value-flow span{font:12px var(--mono);color:var(--accent-gold-text)}.process-list strong,.value-flow strong{font:600 25px/1.4 var(--serif);color:var(--slate)}.process-list p,.value-flow p{color:var(--muted);font-size:14px}.detail-split{border-top:1px solid var(--slate);padding-top:28px}.detail-split h2,.detail-rule-entry h2{font-size:clamp(40px,3.5vw,52px)}.detail-split>div:last-child,.detail-rule-entry>div:last-child{color:var(--muted);font-size:17px;line-height:1.9}.detail-split .detail-note{margin-top:22px}.section-dark{background:var(--bg-dark);background-image:radial-gradient(circle at 50% 0%,#1E293B 0%,#0F172A 100%);color:var(--text-dark-primary)}.section-dark h2{color:var(--text-dark-primary)}.section-dark .detail-section-intro>p:last-child{color:var(--text-dark-secondary)}.detail-columns{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border-dark)}.detail-columns p{margin:0;padding:28px 24px 0 0;border-right:1px solid var(--border-dark);font:600 21px/1.45 var(--serif)}.detail-columns p+p{padding-left:24px}.detail-columns p:last-child{border-right:0}.detail-credential{display:grid;grid-template-columns:4fr 8fr;gap:32px;border-top:1px solid var(--line)}.detail-credential h2{font-size:clamp(38px,3.4vw,50px);color:var(--slate)}.detail-credential>div>p{max-width:680px;margin-top:24px;color:var(--muted);font-size:16px}.faq-list{border-top:1px solid var(--slate)}.faq-list details{border-bottom:1px solid var(--line)}.faq-list summary{display:flex;min-height:74px;align-items:center;justify-content:space-between;cursor:pointer;font:600 23px/1.4 var(--serif);color:var(--slate)}.faq-list summary:after{content:"+";font:22px var(--sans);color:var(--amber)}.faq-list details[open] summary:after{content:"−"}.faq-list p{max-width:720px;padding:0 0 24px;color:var(--muted);font-size:15px}.detail-contact{display:grid;grid-template-columns:1fr 1fr;gap:80px;border-top:1px solid var(--slate);padding-block:80px}.detail-contact h2{font-size:42px}.detail-contact>div:last-child{align-self:end}.detail-contact>div:last-child p{max-width:470px;margin-bottom:24px;color:var(--muted);font-size:15px}.detail-contact .button{width:max-content}.example-ledger{border-top:2px solid var(--amber);padding-top:20px}.example-ledger p{display:grid;grid-template-columns:1fr 1.3fr;gap:32px;margin:0;padding:20px 0;border-bottom:1px solid var(--border-dark);color:var(--text-dark-secondary);font-size:14px}.example-ledger strong{font:600 24px/1.4 var(--serif);color:var(--text-dark-primary)}.example-ledger .example-total{border-bottom:0}.section-footnote{margin-top:24px;color:var(--text-dark-secondary);font-size:13px}.detail-rule-entry{align-items:end}.detail-rule-entry .text-link{margin-top:24px}

@media(max-width:1023px){
  .site-header{height:82px}.header-action{display:none}.menu-toggle{display:block;margin-left:auto;font-size:13px}.menu-toggle span{margin-left:6px}.site-header nav{display:none;position:absolute;z-index:30;top:82px;left:0;right:0;background:var(--surface);border:1px solid var(--border-menu);padding:10px 18px 16px;box-shadow:0 14px 30px rgba(17,24,39,.08)}.site-header nav.open{display:grid;align-items:stretch;gap:0}.nav-item{display:block}.nav-link,.nav-trigger{width:100%;min-height:48px;border-bottom:1px solid var(--border-light);justify-content:space-between}.nav-dropdown{position:static;width:auto;padding:0 0 8px;margin:0;border:0;border-bottom:1px solid var(--border-light);box-shadow:none;display:none;opacity:1;visibility:visible;pointer-events:auto;transform:none;background:transparent}.nav-dropdown:before{display:none}.has-dropdown.submenu-open .nav-dropdown{display:grid}.services-menu{grid-template-columns:1fr 1fr;gap:20px}.dropdown-column{padding:12px 0}.dropdown-column+.dropdown-column{padding:12px 0 12px 20px}.technology-menu{padding:12px 0}.technology-menu>a{grid-template-columns:52px 1fr}.has-dropdown:hover .nav-dropdown,.has-dropdown:focus-within .nav-dropdown{display:none}.has-dropdown.submenu-open .nav-dropdown{display:grid}.has-dropdown:hover .nav-trigger span,.has-dropdown:focus-within .nav-trigger span{transform:none}.has-dropdown.submenu-open .nav-trigger span{transform:rotate(180deg)}
}

@media(max-width:900px){
  .shell{width:min(100% - 80px,1248px)}.site-header{height:82px}.header-action{display:none}.hero{min-height:auto;padding-top:64px}.hero h1{font-size:72px}.hero-system{padding-left:32px}.section{padding-block:88px}.section-intro{grid-template-columns:1fr 1.5fr}.section-intro h2{grid-column:2;font-size:clamp(40px,3.5vw,52px)}.section-intro>p:last-child{grid-column:2}.capability-workbench{grid-template-columns:1fr}.scenario-panel{position:relative;top:auto;margin-top:40px;min-height:0}.collaboration-grid,.position-grid{gap:56px}.technology-head{grid-template-columns:1fr 1fr}.product-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.product-risk{grid-column:1/-1;width:calc(50% - 12px)}.value{gap:60px}.insight-index a{grid-template-columns:42px minmax(260px,1.4fr) 1fr 20px;gap:18px}.article-hero-grid,.article-layout{grid-template-columns:2fr 8fr}.article-contact{gap:48px}.contact{gap:48px}
}

@media(max-width:680px){
  .shell{width:calc(100% - 40px)}.site-header{height:72px}.brand{font-size:19px;gap:6px}.brand-copy{width:88px;height:29px}.brand-copy small{font-size:7px;margin-top:0;letter-spacing:0}.brand-icon{width:39px;height:29px}.brand-icon img{width:39px;height:39px;left:-1px;top:-8px}.site-header nav{top:72px;left:0;right:0}.services-menu{grid-template-columns:1fr;gap:0}.dropdown-column+.dropdown-column{border-left:0;padding:12px 0}.dropdown-column>a,.technology-menu>a{min-height:44px}.dropdown-column>p{margin-top:4px}.dropdown-note{margin-top:8px}
  h2{font-size:36px;line-height:1.24}.section-intro h2,.value-copy h2,.position-grid h2{font-size:34px}.hero{display:block;padding-top:52px}.hero-copy{padding-bottom:42px}.eyebrow{margin-bottom:20px}.hero h1{font-size:58px}.hero-lead{font-size:20px;margin-top:28px}.hero-body{font-size:15px;margin-top:18px}.hero-actions{align-items:flex-start;flex-direction:column;gap:12px;margin-top:26px}.hero-actions .text-link{min-height:44px}.hero-system{margin-top:0;border-left:0;border-top:1px solid var(--line);padding:20px 0 26px}.system-label,.hero-tags,.trust-line{display:none}.relation-list{display:grid;grid-template-columns:1fr 1fr;gap:0 22px;border-top:0}.relation-list a{grid-template-columns:34px 1fr;min-height:48px;padding:10px 0}.relation-list a:hover,.relation-list a:focus-visible{padding-left:0;background:none;box-shadow:none}.relation-list a:after,.relation-list small{display:none}.relation-list strong{font:600 17px/1.4 var(--serif)}.relation-list a:hover strong,.relation-list a:focus-visible strong{transform:none}.hero-footer{display:block;padding:16px 0;font-size:11px}.hero-footer span:last-child{display:none}
  .section{padding-block:72px}.section-kicker{margin-bottom:20px}.section-intro{display:block;margin-bottom:32px}.section-intro>p:last-child{font-size:15px;margin-top:18px}.capability-workbench{display:block}.service-list button{grid-template-columns:30px 1fr 22px;gap:4px 14px;padding:18px 12px;min-height:72px}.service-list button:hover,.service-list button[aria-selected=true]{padding-left:12px}.service-list .index{grid-row:1/3}.service-list strong{font-size:23px}.service-list button>span:nth-child(3){grid-column:2;font-size:13px;line-height:1.6}.service-list i{display:block;grid-column:3;grid-row:1/3}.scenario-panel{margin-top:30px;padding:24px 12px 0;min-height:0;border-left:1px solid var(--line);border-right:1px solid var(--line)}.scenario-index{margin-top:28px}.scenario-panel h3{font-size:28px}.scenario-panel ul{margin-top:22px}.scenario-panel li{font-size:14px;padding:12px 0}.service-note{font-size:13px}
  .collaboration{padding-block:76px}.collaboration-grid{display:block}.collaboration-copy{font-size:16px;margin-top:30px}.principles{display:block;margin-top:46px}.principles li,.principles li+li{border-right:0;border-bottom:1px solid var(--border-dark);padding:19px 0;display:grid;grid-template-columns:38px 1fr;align-items:center}.principles span{margin:0}.principles strong{font-size:25px}
  .technology{padding-block:78px}.technology-head{display:block}.technology-head>p{font-size:15px;margin-top:26px}.product-gallery{display:flex;gap:16px;overflow-x:auto;margin:50px -20px 0;padding:0 20px 18px;scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch}.product-gallery::-webkit-scrollbar{display:none}.product,.product-risk{flex:0 0 calc(100vw - 72px);width:auto;scroll-snap-align:start}.product-copy{grid-template-columns:26px 98px 1fr;gap:8px;margin-bottom:14px;min-height:74px}.product-copy h3{font-size:26px}.product-copy b{font-size:10px}.product-copy p{font-size:12px;line-height:1.55}.window-viewport{aspect-ratio:1.38}.product img{height:100%;object-fit:cover}.product-crm img{object-position:29% top}.product-geo img{object-position:26% top}.product-risk img{object-position:left center}.gallery-indicator{display:flex;justify-content:center;align-items:center;gap:7px;height:14px;margin-top:2px}.gallery-indicator i{display:block;width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24);transition:width .2s ease,background-color .2s ease}.gallery-indicator i.active{width:12px;border-radius:3px;background:var(--accent-gold)}.technology-note{margin-top:24px;font-size:13px}
  .value{display:block}.value-lead{font-size:23px;margin-top:28px}.value-copy>p:not(.section-kicker):not(.value-lead){font-size:15px}.value-ledger{margin-top:52px}.value-path li{padding:20px 0}.value-path strong{font-size:23px}.possible-result{font-size:14px}.rules{margin-top:24px;font-size:14px}
  .position-grid{display:block}.position-grid>div{margin-top:36px}.position-grid>div p{font-size:16px;padding:18px 0}.final-line{font-size:42px;margin-top:76px}
  .insights-preview-head{display:block}.insights-preview-head>p{font-size:15px;margin-top:22px}.insight-index{margin-top:38px}.insight-index a{grid-template-columns:28px 1fr 20px;gap:12px;padding:22px 0}.insight-index a:hover{padding-left:0;background:none}.insight-index p{grid-column:2;font-size:13px}.insight-index h3{font-size:21px}.insight-index i{grid-column:3;grid-row:1/3}.insights-all{min-height:44px;align-items:center;margin-top:22px}
  .insights-hero{padding-block:68px}.insights-hero-grid{display:block}.insights-hero h1{font-size:58px}.insights-hero-grid>div{margin-top:40px}.insights-listing{padding-block:64px 76px}.listing-intro{display:block}.listing-intro h2{font-size:34px}.insight-index-page{margin-top:38px}.insight-index-page h2{font-size:21px}.insights-method{display:block;margin-bottom:64px}.insights-method p{margin-top:16px}.article-hero{padding-block:32px 54px}.article-hero-grid{display:block;margin-top:30px}.article-meta{margin-bottom:28px}.article-hero h1{font-size:42px}.article-lede{font-size:18px;margin-top:24px}.article-layout{display:block;padding-block:52px 72px}.article-rail{position:static;display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:42px}.article-rail p{font-size:17px;margin:0}.article-rail span{text-align:right}.article-body h2{font-size:26px}.article-body p{font-size:16px;line-height:1.9}.article-body>section+section{margin-top:46px}.article-note{margin-top:50px;padding:20px}.article-sources{margin-top:50px!important}.related-insights{padding-block:58px}.related-insights a{grid-template-columns:1fr 20px;gap:8px}.related-insights span{grid-column:1}.related-insights strong{font-size:20px}.related-insights i{grid-column:2;grid-row:1/3}.article-contact{display:block;padding-block:60px}.article-contact h2{font-size:34px}.article-contact>div:last-child{margin-top:28px}
  .contact{display:block;padding-block:64px}.contact h2{font-size:34px}.contact-copy{font-size:14px;margin-top:16px}.contact-actions{margin-top:32px}.contact-actions .button{width:100%}.contact-actions .button+.button{margin:10px 0 0}.contact-actions>p{line-height:1.7}.contact-facts>div{grid-template-columns:82px 1fr}
  .site-footer{grid-template-columns:1fr auto;padding-block:28px;gap:24px}.footer-brand .brand{font-size:18px}.footer-brand>p{font-size:11px}.footer-actions{grid-column:2;grid-row:1;align-self:start}
  dialog{padding:22px}.dialog-head h2{font-size:25px}.contact-dialog-grid{grid-template-columns:1fr;gap:24px}.contact-person h3{font-size:34px}.contact-phone{font-size:21px;margin-bottom:18px}.wechat-card{width:min(210px,100%);margin-inline:auto}
}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.service-list i{transition:none}.button:hover,.service-list button:hover i{transform:none}}

@media(max-width:900px){
  .detail-hero{padding-block:76px}.detail-hero-grid{display:block}.detail-hero-grid>div{margin-top:42px}.detail-section-intro{grid-template-columns:1fr 1.5fr}.detail-section-intro h2,.detail-section-intro>p:last-child{grid-column:2}.detail-credential{grid-template-columns:3fr 9fr}.detail-columns{grid-template-columns:repeat(2,1fr);gap:0}.detail-columns p:nth-child(2){border-right:0}.detail-columns p:nth-child(n+3){margin-top:28px}.detail-contact{gap:48px}
}

@media(max-width:680px){
  .detail-hero{padding-block:64px}.detail-hero h1{font-size:54px}.detail-hero-grid>div{font-size:15px;margin-top:34px}.detail-section{padding-block:72px}.detail-section-intro{display:block;margin-bottom:34px}.detail-section-intro>p:last-child{font-size:15px;margin-top:18px}.detail-section-intro h2{font-size:34px}.detail-index>li,.detail-index>div{grid-template-columns:32px 1fr;gap:12px;padding:21px 0}.detail-index h3{font-size:23px}.detail-index p{font-size:14px}.detail-two-column,.detail-split,.detail-rule-entry{display:block}.detail-two-column>div+div{margin-top:42px}.detail-note{font-size:15px}.process-list li,.value-flow li{grid-template-columns:28px 1fr;gap:12px;padding:20px 0}.process-list p,.value-flow p{grid-column:2;font-size:13px;line-height:1.65}.process-list strong,.value-flow strong{font-size:22px}.detail-split{padding-top:24px}.detail-split h2,.detail-rule-entry h2{font-size:34px}.detail-split>div:last-child,.detail-rule-entry>div:last-child{margin-top:28px;font-size:15px;line-height:1.85}.detail-columns{display:block}.detail-columns p,.detail-columns p+p{padding:19px 0;border-right:0;border-bottom:1px solid var(--border-dark);margin:0;font-size:20px}.detail-credential{display:block}.detail-credential>div{margin-top:24px}.detail-credential h2{font-size:34px}.faq-list summary{min-height:64px;font-size:20px}.faq-list p{font-size:14px}.detail-contact{display:block;padding-block:64px}.detail-contact h2{font-size:34px}.detail-contact>div:last-child{margin-top:28px}.detail-contact .button{width:100%}.example-ledger p{display:block;padding:18px 0}.example-ledger strong{display:block;margin-top:8px;font-size:21px}.section-footnote{font-size:12px}
}