/* Preview refinements — shared navigation, purposeful entry points and reading layout. */
.nav{background:color-mix(in srgb,var(--bg) 94%,transparent);border-bottom-color:var(--rule);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.nav .wrap{gap:24px}
.nav ul{gap:4px}
.nav ul a{font-weight:500;position:relative;white-space:nowrap}
.nav ul a:hover{color:var(--accent)}
.nav a[aria-current="page"],.nav ul a.cur{color:var(--accent);box-shadow:inset 0 -3px 0 var(--accent)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}
.page-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.page-actions .btn{min-height:48px;height:auto;padding:11px 22px;justify-content:center}
.page-actions .btn.ghost{background:var(--paper);border-color:var(--rule2)}
.page-actions .btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.article-hero{padding:142px 0 48px;background:linear-gradient(120deg,var(--bg) 35%,var(--bg2));position:relative}
.article-hero .crumb{margin-bottom:26px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.article-hero h1{font-size:clamp(32px,4.1vw,54px);max-width:960px;line-height:1.35;letter-spacing:-.035em;margin:20px 0}
.article-hero .lead{max-width:820px;font-size:18px;line-height:1.95}
.article-meta{margin-top:28px;padding-top:20px;border-top:1px solid var(--rule);gap:20px;color:var(--ink2)}
.article-grid{grid-template-columns:220px minmax(0,760px);gap:64px;padding-top:48px;padding-bottom:48px}
.toc{top:96px;border:1px solid var(--rule);border-radius:14px;padding:20px 16px;background:var(--paper)}
.toc h2{margin:0 10px 12px;color:var(--ink2);font-size:12px}
.toc a{border:0;border-radius:7px;padding:10px 12px;margin:3px 0;line-height:1.65;font-size:13px}
.toc a:hover{background:var(--bg2)}
.toc a.active{color:var(--accent);background:color-mix(in srgb,var(--accent) 9%,var(--paper));box-shadow:inset 3px 0 0 var(--accent);font-weight:600}
.prose{min-width:0}
.prose section{padding-bottom:34px;margin-bottom:30px;border-bottom:1px solid var(--rule);scroll-margin-top:100px}
.prose section:last-child{margin-bottom:0}
.prose h2{font-size:26px;letter-spacing:-.02em;line-height:1.5;margin:0 0 20px}
.prose p{font-size:17px;line-height:2.05;margin:0 0 18px;color:var(--ink2);overflow-wrap:anywhere}
.prose p:last-child{margin-bottom:0}
.prose figure{padding:12px;box-shadow:var(--card-shadow)}
.related{background:var(--bg2);padding:48px 0 56px}
.related h2{font-size:27px;letter-spacing:-.02em}
.entry{padding:28px;border-radius:16px;box-shadow:var(--card-shadow);gap:14px;position:relative;min-width:0}
.entry h3{font-size:23px;line-height:1.5;letter-spacing:-.015em}
.entry p{line-height:1.8}
.entry small{font-weight:600}
.entry .go{padding-top:8px;font-size:14px;color:var(--accent)}
.entry:hover{box-shadow:0 14px 32px -24px var(--accent)}
.knowledge.section-early{padding:56px 0 64px;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--bg2)}
.knowledge.section-early .entry-grid{margin-top:28px}
.knowledge.section-early h2{font-size:clamp(27px,3vw,38px);line-height:1.4;letter-spacing:-.03em}
.knowledge.section-early .site-links{margin-top:26px;align-items:center}
.knowledge.section-early .site-links a{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-weight:500}
.library-hero{padding:142px 0 58px;background:linear-gradient(120deg,var(--bg) 35%,var(--bg2));border-bottom:1px solid var(--rule)}
.library-hero h1{font-size:clamp(34px,4.4vw,58px);line-height:1.3;letter-spacing:-.04em;margin:20px 0;max-width:780px}
.library-hero p{font-size:18px;line-height:1.9;max-width:710px;color:var(--ink2)}
.library-hero .eyebrow{color:var(--accent);font-size:13px;font-weight:500}
.library-intro{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(260px,1fr);gap:56px;align-items:center}
.route-note{border:1px solid var(--rule);border-top:3px solid var(--accent);background:var(--paper);padding:26px 28px;border-radius:0 0 14px 14px;box-shadow:var(--card-shadow)}
.route-note h2,.route-note h3{font-size:19px;line-height:1.5;margin:0 0 12px}
.route-note p{font-size:14px;line-height:1.85;margin:0;color:var(--ink2)}
.route-note a{color:var(--accent)}
.route-note .page-actions{margin-top:20px}
.route-note .btn{font-size:14px;min-height:42px;padding:9px 16px}
.library-grid{display:block;padding-top:16px;padding-bottom:64px;margin-top:28px}
.library-grid .entry{height:100%}
.category-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.category-links a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:9px 18px;border:1px solid var(--rule2);border-radius:8px;background:var(--paper);color:var(--ink2);font-size:14px;line-height:1.5;transition:border-color .2s,color .2s,background .2s}
.category-links a:hover,.category-links a[aria-current]{border-color:var(--accent);color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--paper))}
.mobile-consult{display:none}
@media(min-width:901px) and (max-width:1100px){.nav .wrap{gap:14px}.nav ul a{padding-inline:9px;font-size:13px}.nav .brand b{font-size:16px}.nav .btn.sm{padding-inline:12px}}
@media(max-width:900px){
  .nav .wrap{gap:16px}
  .nav ul{gap:0}
  .nav ul a{padding:13px 12px;margin:3px 0;border:0;border-radius:7px}
  .nav a[aria-current="page"],.nav ul a.cur{background:var(--bg2);box-shadow:inset 3px 0 0 var(--accent)}
  .article-hero,.library-hero{padding-top:128px}
  .library-intro{grid-template-columns:1fr;gap:28px}
  .route-note{max-width:none}
  .article-grid{grid-template-columns:1fr;gap:30px;padding-top:28px}
  .toc{position:relative;top:auto;padding:10px;border-radius:10px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:thin;max-width:100%}
  .toc a{margin:0;flex:none;font-size:13px;padding:9px 12px;white-space:nowrap}
  .toc a.active{box-shadow:inset 0 -2px 0 var(--accent)}
  .toc h2{display:none}
  .prose section{scroll-margin-top:98px}
}
@media(max-width:600px){
  body{padding-bottom:calc(78px + env(safe-area-inset-bottom,0px))}
  .nav .wrap{gap:10px}
  .nav .brand b{font-size:15px}
  .article-hero,.library-hero{padding-top:120px;padding-bottom:34px}
  .article-hero h1,.library-hero h1{font-size:32px;line-height:1.4;margin:18px 0;letter-spacing:-.025em}
  .article-hero .eyebrow,.library-hero .eyebrow{max-width:100%;font-size:12px}
  .article-hero .lead,.library-hero p{font-size:16px;line-height:1.9}
  .article-hero .crumb{font-size:12px;margin-bottom:22px}
  .article-meta{font-size:12px;gap:8px 16px;margin-top:24px;padding-top:18px}
  .page-actions{gap:10px;margin-top:24px}
  .page-actions .btn{padding:11px 16px;font-size:14px;flex:1;min-width:132px}
  .article-grid{padding-bottom:26px;gap:28px}
  .prose h2{font-size:23px;margin-bottom:16px}
  .prose p{font-size:16px;line-height:2}
  .prose section{padding-bottom:28px;margin-bottom:26px}
  .prose figure{padding:8px;margin-bottom:28px}
  .knowledge.section-early{padding:40px 0 44px}
  .knowledge.section-early h2{font-size:28px}
  .entry-grid,.library-grid{grid-template-columns:1fr;gap:14px;margin-top:24px}
  .entry{padding:23px;gap:12px}
  .entry h3{font-size:22px}
  .entry p{font-size:14px}
  .library-intro{gap:24px}
  .route-note{padding:22px}
  .route-note p{font-size:14px}
  .category-links{gap:8px;margin-top:24px}
  .category-links a{font-size:13px;padding:8px 14px;min-height:40px}
  .related{padding:36px 0 40px}
  .related h2{font-size:24px}
  .mobile-consult{display:grid;grid-template-columns:1fr 1.35fr;gap:10px;position:fixed;bottom:0;left:0;right:0;padding:12px var(--gut) calc(12px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--rule);background:color-mix(in srgb,var(--bg) 95%,transparent);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);z-index:45}
  .mobile-consult a{display:flex;align-items:center;justify-content:center;min-height:44px;font-size:14px;line-height:1.4;padding:10px 12px;border-radius:8px;border:1px solid var(--rule2);color:var(--ink);background:var(--paper);font-weight:500;text-align:center}
  .mobile-consult a:last-child{background:var(--btn);color:#fff;border-color:var(--btn)}
  .contact{margin-bottom:24px}
}
@media(prefers-reduced-motion:reduce){.entry,.category-links a{transition:none}.entry:hover{transform:none}}

.route-note small{display:block;font-size:12px;color:var(--accent);letter-spacing:.08em;margin-bottom:12px}.route-note>a{display:inline-block;font-size:14px;margin-top:18px}

/* Official supplied logo: original proportions, no extrusion or rotation. */
.brand-symbol{width:32px;height:32px;object-fit:contain;flex:none}
.hero .official-logo-stage{width:min(100%,440px);margin:0;justify-self:center;perspective:none;display:grid;place-items:center}
.official-logo{width:100%;height:auto;object-fit:contain;transform:none;animation:none}
.company-section .section-label{font-size:12px;letter-spacing:.12em;color:var(--accent);margin-bottom:12px}
.company-section .section-intro{font-size:16px;margin-bottom:26px}
.company-capabilities{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.capability{display:flex;flex-direction:column;padding:24px;background:var(--paper);border:1px solid var(--rule);border-radius:14px;transition:border-color .2s}
.capability:hover{border-color:var(--accent)}.capability .cap-type{font-size:12px;color:var(--accent);letter-spacing:.08em}
.capability h3{font-size:20px;line-height:1.5;margin:12px 0}.prose .capability p{font-size:15px;line-height:1.85;margin-bottom:18px}.cap-link{font-size:13px;color:var(--accent);margin-top:auto}
.company-reference{margin-top:20px;padding:18px 0;display:flex;gap:22px;flex-wrap:wrap;font-size:14px}.company-reference b{font-weight:500;color:var(--ink2)}.company-reference a{color:var(--accent)}
.delivery-path{list-style:none;margin:0;padding:0;border-top:1px solid var(--rule)}
.delivery-path li{display:flex;gap:22px;padding:24px 0;border-bottom:1px solid var(--rule)}.phase-number{font-size:26px;line-height:1.4;color:var(--accent);font-family:var(--num)}
.delivery-path h3{font-size:19px;margin:0 0 6px}.prose .delivery-path p{font-size:15px;margin:0 0 8px;line-height:1.8}.delivery-path small{font-size:12px;color:var(--ink2)}
.scope-note{font-size:12px;color:var(--ink2);margin-top:20px;padding:14px 18px;background:var(--bg2);border-radius:8px}
.principle-list{margin:0}.principle-list>div{display:grid;grid-template-columns:145px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--rule)}.principle-list dt{font-size:16px;font-weight:600}.principle-list dd{margin:0;font-size:15px;line-height:1.85;color:var(--ink2)}
@media(max-width:900px){.hero .official-logo-stage{width:330px;max-width:100%;justify-self:center}}
@media(max-width:600px){.hero .official-logo-stage{position:absolute;right:16px;top:-8px;width:106px;margin:0}.company-capabilities{grid-template-columns:1fr}.capability{padding:22px}.principle-list>div{grid-template-columns:1fr;gap:8px}.company-reference{gap:12px 20px}.delivery-path li{gap:16px}.phase-number{font-size:22px}}

.contact .consult-fields{color:rgba(255,255,255,.78)}

/* Rigid 3D logo: every depth layer uses the same original image and coordinate plane. */
.hero .official-logo-stage{perspective:1200px;isolation:isolate;aspect-ratio:1/1}
.logo-pose{width:100%;height:100%;transform-style:preserve-3d;transform:rotateX(calc(5deg - var(--my,0)*6deg)) rotateY(calc(-10deg + var(--mx,0)*8deg));transition:transform 850ms cubic-bezier(.2,.7,.2,1)}
.logo-object{position:relative;width:100%;height:100%;transform-style:preserve-3d;animation:brand-float 7s ease-in-out infinite alternate}
.logo-object img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;backface-visibility:hidden;pointer-events:none}
.logo-depth{transform:translateZ(calc(var(--depth)*-1px));filter:brightness(.65) saturate(1.15)}
.logo-face{transform:translateZ(1px);filter:drop-shadow(0 1px 1px rgba(24,48,130,.2))}
.logo-sheen{position:absolute;inset:0;transform:translateZ(2px);background:linear-gradient(135deg,rgba(255,255,255,.65),transparent 43%,rgba(255,255,255,.12) 68%,transparent);mask:url('/assets/brand-logo.webp?v=1a83b88a3b') center/contain no-repeat;-webkit-mask:url('/assets/brand-logo.webp?v=1a83b88a3b') center/contain no-repeat;pointer-events:none;opacity:.3}
.logo-ground{position:absolute;bottom:-3%;left:14%;width:72%;height:6%;border-radius:50%;background:radial-gradient(ellipse,rgba(39,45,140,.28),transparent 70%);filter:blur(9px);animation:brand-shadow 7s ease-in-out infinite alternate;z-index:-1}
@keyframes brand-float{from{transform:translateY(0)}to{transform:translateY(-8px)}}
@keyframes brand-shadow{from{opacity:.75;transform:scaleX(1)}to{opacity:.48;transform:scaleX(.9)}}
@media(max-width:600px){.logo-depth{transform:translateZ(calc(var(--depth)*-.35px))}.logo-ground{filter:blur(3px)}}
@media(prefers-reduced-motion:reduce){.logo-object,.logo-ground{animation:none}.logo-pose{transform:none;transition:none}}


/* ===== v5 polish (2026-10-10) ===== */
/* section heads: description sits under the title */
.sec-h{grid-template-columns:minmax(0,1fr);gap:14px;margin-bottom:48px}
.sec-h p{max-width:640px;padding:0;align-self:auto;font-size:17px}
/* offers: aligned bottoms */
.offer{min-height:100%}
.offer .tl,.offer ul{margin-top:auto}
.offer .go{display:inline-flex;align-items:center;gap:8px;margin-top:22px;padding-top:18px;border-top:1px solid var(--rule);font-size:14px;font-weight:500;color:var(--c)}
.offer ul{padding-top:22px}
/* hero trust strip */
.trust{display:flex;flex-wrap:wrap;gap:12px 32px;margin-top:44px;padding-top:22px;border-top:1px solid var(--rule);font-size:14px;color:var(--ink2)}
.trust>div{display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px}
.trust .t-k{font-size:12px;letter-spacing:.08em;color:var(--ink3);margin-right:2px}
.trust a{color:var(--ink);font-weight:500;border-bottom:1px solid var(--rule2)}
.trust a:hover{color:var(--accent);border-color:var(--accent)}
/* FAQ */
.faq{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.fq{display:flex;flex-direction:column;gap:10px;padding:26px 24px;border-radius:12px;background:var(--paper);border:1px solid var(--rule);transition:border-color .2s}
.fq:hover{border-color:var(--accent)}
.fq b{font-size:18px;line-height:1.5;font-weight:600;color:var(--ink)}
.fq p{font-size:14px;line-height:1.8;color:var(--ink2);margin:0}
.fq .go{margin-top:auto;padding-top:8px;font-size:14px;color:var(--accent);font-weight:500}
.faq-more{margin-top:24px}.faq-more a{color:var(--accent);font-weight:500}
@media(max-width:1000px){.faq{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.faq{grid-template-columns:1fr}.trust{margin-top:32px;gap:10px}.trust>div{gap:4px 12px}.sec-h{margin-bottom:36px}}

/* ===== stronger 3D logo ===== */
.hero .official-logo-stage{width:min(100%,520px);perspective:1400px}
.logo-pose{transform:rotateX(calc(var(--my,0)*-8deg)) rotateY(calc(var(--mx,0)*12deg))}
.idle .logo-pose,.logo-pose.idle{animation:logo-sway 9s ease-in-out infinite alternate}
@keyframes logo-sway{from{transform:rotateX(3deg) rotateY(-6deg)}to{transform:rotateX(-2deg) rotateY(6deg)}}
.logo-depth{transform:translate(calc(var(--depth)*.022%),calc(var(--depth)*.038%));filter:brightness(calc(var(--b,.5) + .38))}
.logo-rim{display:none}
.logo-face{transform:translateZ(1.5px)}
.logo-sheen{transform:translateZ(2.5px);opacity:.45;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.75) 44%,rgba(255,255,255,.15) 50%,transparent 58%) 0 0/250% 100%;animation:logo-glint 6.5s ease-in-out infinite;mix-blend-mode:screen}
@keyframes logo-glint{0%,40%{background-position:120% 0}75%,100%{background-position:-60% 0}}
.logo-ground{bottom:-8%;left:10%;width:80%;height:10%;background:radial-gradient(ellipse,rgba(39,45,140,.42),transparent 68%);filter:blur(12px)}
:root[data-theme="dark"] .logo-ground{background:radial-gradient(ellipse,rgba(110,120,255,.35),transparent 68%)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .logo-ground{background:radial-gradient(ellipse,rgba(110,120,255,.35),transparent 68%)}}
@media(max-width:900px){.hero .official-logo-stage{width:320px}}
@media(max-width:600px){.hero .official-logo-stage{width:112px;perspective:900px}}
@media(prefers-reduced-motion:reduce){.logo-sheen,.logo-pose{animation:none!important}}

.frame .si{display:none}.frame .si.on{display:block}
.mp-body[hidden]{display:none}
/* 要点速览 */
.tldr{margin:0 0 34px;padding:22px 24px;border-radius:12px;background:color-mix(in srgb,var(--accent) 6%,var(--paper));border:1px solid color-mix(in srgb,var(--accent) 22%,transparent);border-left:4px solid var(--accent)}
.prose .tldr h2{font-size:15px;letter-spacing:.06em;color:var(--accent);margin:0 0 10px}
.tldr ul{margin:0;padding-left:1.2em}
.tldr li{font-size:15.5px;line-height:1.85;color:var(--ink);margin:4px 0}

.logo-baked{transform:translateZ(0)}


/* ===== v6 ===== */
/* hero visual with demo */
.hero-visual{position:relative;justify-self:end;width:min(100%,500px);display:flex;flex-direction:column;align-items:center}
.hero-visual .official-logo-stage{width:min(100%,400px);transform-origin:center;will-change:transform}
.nav .brand-symbol{transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.nav .brand-symbol.arrive{transform:scale(1.18)}
.demo{position:relative;margin-top:-6px;align-self:flex-end;width:360px;border-radius:14px;padding:0 0 14px;font-size:13px;color:var(--ink);
 background:color-mix(in srgb,var(--paper) 82%,transparent);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);
 border:1px solid color-mix(in srgb,var(--ink) 10%,transparent);box-shadow:0 30px 60px -28px rgba(30,40,120,.45),0 2px 6px rgba(20,24,60,.06);z-index:3}
.demo-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--rule)}
.demo-bar .dots{display:flex;gap:5px}.demo-bar .dots i{width:8px;height:8px;border-radius:50%;background:var(--rule2)}
.demo-bar b{font-size:12px;font-weight:600;color:var(--ink2);margin-right:auto}
.demo-bar .tag{font-size:11px;padding:1px 8px;border-radius:999px;background:var(--bg2);color:var(--ink3)}
.demo-in{display:flex;align-items:center;gap:8px;margin:12px 14px 6px;padding:10px 12px;border-radius:10px;background:var(--paper);border:1px solid var(--rule2);min-height:42px}
.demo-in .spark{color:#7a5cff}
.demo-q{font-weight:500}
.caret{width:1.5px;height:15px;background:var(--accent);animation:caret 1s steps(1) infinite}
.demo.typed .caret{display:none}
@keyframes caret{50%{opacity:0}}
.demo-steps{list-style:none;margin:6px 14px 0;padding:0}
.demo-steps li{display:grid;grid-template-columns:18px 1fr auto;gap:8px;align-items:center;padding:6px 0;color:var(--ink3);opacity:.45;transition:opacity .3s,color .3s}
.demo-steps li i{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--rule2);position:relative}
.demo-steps li em{font-style:normal;font-size:11px;color:var(--ink3)}
.demo-steps li.run,.demo-steps li.done,.demo-steps li.wait{opacity:1;color:var(--ink)}
.demo-steps li.run i{border-color:var(--accent);border-right-color:transparent;animation:spin .8s linear infinite}
.demo-steps li.done i{background:var(--ok);border-color:var(--ok)}
.demo-steps li.done i::after{content:"";position:absolute;left:3.5px;top:1.5px;width:3px;height:6px;border:solid #fff;border-width:0 1.5px 1.5px 0;transform:rotate(45deg)}
.demo-steps li.wait i{background:var(--warn);border-color:var(--warn)}
.demo-steps li.wait em{color:var(--warn)}
@keyframes spin{to{transform:rotate(360deg)}}
.demo-out{margin:8px 14px 0;padding:10px 12px;border-radius:10px;background:linear-gradient(120deg,color-mix(in srgb,#4b4dff 12%,var(--paper)),color-mix(in srgb,#8b3dff 10%,var(--paper)));border:1px solid color-mix(in srgb,#4b4dff 22%,transparent);opacity:0;transform:translateY(6px);transition:opacity .45s,transform .45s}
.demo-out.on{opacity:1;transform:none}
.demo-out b{display:block;font-size:13px}.demo-out span{font-size:12px;color:var(--ink2)}
@media(max-width:1180px){.demo{width:330px}}
@media(max-width:900px){.hero-visual{width:320px}.demo{display:none}}
@media(max-width:600px){.hero-visual{position:static;width:auto}.hero .hero-visual .official-logo-stage{position:absolute;right:14px;top:-10px;width:118px}}

/* dark bento */
section.dark{background:#07080f;color:#eef0fa;--ink:#eef0fa;--ink2:#a6abc4;--ink3:#6c7190;--rule:rgba(238,240,250,.1);--rule2:rgba(238,240,250,.2);--paper:#11131f;--bg2:#161827;--ok:#5fd19b;--warn:#f2b45a;position:relative;overflow:hidden}
section.dark::before{content:"";position:absolute;inset:-20% -10% auto;height:70%;background:radial-gradient(40% 60% at 25% 0%,rgba(75,77,255,.28),transparent 70%),radial-gradient(35% 50% at 85% 10%,rgba(139,61,255,.22),transparent 70%);pointer-events:none}
section.dark .wrap{position:relative}
section.dark .sec-no .num{color:#8b97ff}
.bento{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-auto-rows:auto;gap:16px}
.bx{--c:#6f7bff;position:relative;display:flex;flex-direction:column;gap:10px;padding:28px;border-radius:20px;background:linear-gradient(180deg,#141628,#0e1020);border:1px solid rgba(255,255,255,.08);color:#eef0fa;overflow:hidden;transition:border-color .3s,transform .4s cubic-bezier(.2,.7,.2,1)}
.bx:hover{border-color:color-mix(in srgb,var(--c) 55%,transparent);transform:translateY(-3px)}
.bx-law{grid-column:1/5;grid-row:1}
.bx-ai{grid-column:5/7;grid-row:1/3}
.bx-bid{grid-column:1/3;grid-row:2}
.bx-ops{grid-column:3/5;grid-row:2}
.bx-h{display:flex;justify-content:space-between;gap:12px;font-size:12px}
.bx-k{color:var(--c);font-weight:600;letter-spacing:.04em}
.bx-go{color:#8a8fab;transition:color .2s}.bx:hover .bx-go{color:#fff}
.bx h3{font-size:26px;font-weight:600;line-height:1.3;margin:4px 0 0}
.bx-law h3{font-size:34px}
.bx p{color:#a6abc4;font-size:15px;line-height:1.75;margin:0;max-width:520px}
.bx-stats{display:flex;gap:36px;margin:8px 0 6px}
.bx-stats b{display:block;font-family:var(--num);font-size:44px;font-weight:600;line-height:1;letter-spacing:-.02em;background:linear-gradient(180deg,#fff,#b9c0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.bx-stats span{font-size:12px;color:#8a8fab}
.bx-shot{margin-top:auto;border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.1);box-shadow:0 30px 60px -30px #000;transform:translateY(14px);transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.bx:hover .bx-shot{transform:translateY(4px)}
.bx-shot img{display:block;width:100%;height:auto}
.bx-law .bx-shot{margin-bottom:-28px}
.bx-ops .bx-shot{margin-bottom:-28px}
.bx-trio{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:12px}
.bx-trio li{display:grid;grid-template-columns:92px 1fr;grid-template-rows:auto auto;column-gap:14px;align-items:center;padding:10px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06)}
.bx-trio img{grid-row:1/3;width:92px;height:72px;object-fit:cover;border-radius:8px}
.bx-trio b{font-size:16px;align-self:end}
.bx-trio span{font-size:13px;color:#a6abc4;align-self:start}
.bx-mock{margin-top:auto;border-radius:12px;padding:6px 16px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08)}
.bx-mock .ln{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.08);font-size:13px;color:#cfd3e6}
.bx-mock .ln:last-child{border-bottom:0}
.bx-mock .ok{color:#5fd19b}.bx-mock .rk{color:#f2b45a}.bx-mock em{font-style:normal;color:#8a8fab}
@media(max-width:1080px){.bento{grid-template-columns:1fr 1fr}.bx-law{grid-column:1/3;grid-row:auto}.bx-ai{grid-column:1/3;grid-row:auto}.bx-bid,.bx-ops{grid-column:auto;grid-row:auto}.bx-trio{grid-template-columns:repeat(2,1fr)}.bx-trio li{grid-template-columns:1fr}.bx-trio img{grid-row:auto;width:100%;height:auto;aspect-ratio:4/3}}
@media(max-width:640px){.bento{grid-template-columns:1fr}.bx-law,.bx-ai,.bx-bid,.bx-ops{grid-column:auto}.bx{padding:22px;border-radius:16px}.bx-law h3{font-size:28px}.bx-stats{gap:22px}.bx-stats b{font-size:34px}.bx-trio{grid-template-columns:1fr}.bx-trio li{grid-template-columns:84px 1fr}.bx-trio img{grid-row:1/3;width:84px;height:64px}}

/* cursor glow on cards */
.glow{position:relative;isolation:isolate}
.glow::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:-1;opacity:0;transition:opacity .35s;
 background:radial-gradient(360px circle at var(--gx,50%) var(--gy,50%),color-mix(in srgb,var(--c,#4b4dff) 16%,transparent),transparent 60%)}
.glow:hover::after{opacity:1}
.bx.glow::after{z-index:0;background:radial-gradient(420px circle at var(--gx,50%) var(--gy,50%),color-mix(in srgb,var(--c) 22%,transparent),transparent 60%)}
.bx>*{position:relative;z-index:1}
@media(prefers-reduced-motion:reduce){.bx,.bx-shot{transition:none}.caret,.demo-steps li.run i{animation:none}}

.bx-ai .bx-trio{flex:1;grid-auto-rows:1fr}
.bx-ai .bx-trio li{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px;padding:16px 18px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
.bx-ai .bx-trio img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.bx-ai .bx-trio li::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(8,9,20,.82))}
.bx-ai .bx-trio li:hover img{transform:scale(1.05)}
.bx-ai .bx-trio b,.bx-ai .bx-trio span{position:relative;z-index:1;align-self:flex-start}
.bx-ai .bx-trio b{font-size:17px}
.bx-ai .bx-trio span{color:#d4d7ea}
.hero{padding-bottom:96px}


/* ===== v7 ===== */
section{padding-block:clamp(64px,8vw,104px)}
.sec-h{margin-bottom:36px}
.sec-h h2{font-size:clamp(28px,3.4vw,44px)}
/* one brand colour everywhere */
.offer,.ic,.mstep,.rule,.bx,.ctab,.layer,.fq,.w-card{--c:var(--accent)}
.tile{background:linear-gradient(135deg,#2a6dff,#6a3dff)}
.offer::before{background:linear-gradient(90deg,#2a6dff,#7a3dff)}
.tl::before{background:linear-gradient(90deg,#2a6dff,#7a3dff)}
.mstep .num{background:linear-gradient(135deg,#2a6dff,#7a3dff);-webkit-background-clip:text;background-clip:text;color:transparent}
.contact{background:radial-gradient(110% 140% at 100% 0%,#7a3dff 0%,transparent 55%),linear-gradient(120deg,#1745d6,#3b2fd6)}
/* cases follow the theme */
#cases .bx{background:var(--paper);border:1px solid var(--rule);color:var(--ink);box-shadow:var(--card-shadow)}
#cases .bx:hover{border-color:color-mix(in srgb,var(--accent) 45%,transparent)}
#cases .bx p{color:var(--ink2)}
#cases .bx-go{color:var(--ink3)}#cases .bx:hover .bx-go{color:var(--accent)}
#cases .bx-k{color:var(--accent)}
#cases .bx-stats b{background:linear-gradient(180deg,#2a6dff,#7a3dff);-webkit-background-clip:text;background-clip:text;color:transparent}
#cases .bx-stats span{color:var(--ink3)}
#cases .bx-shot{border-color:var(--rule2);box-shadow:0 24px 48px -30px rgba(30,40,120,.45)}
#cases .bx-mock{background:var(--bg2);border-color:var(--rule)}
#cases .bx-mock .ln{color:var(--ink2);border-bottom-color:var(--rule)}
#cases .bx-mock .ok{color:var(--ok)}#cases .bx-mock .rk{color:var(--warn)}
.bx-res{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 4px}
.bx-res span{font-size:12px;color:var(--ink2);padding:4px 10px;border-radius:999px;background:color-mix(in srgb,var(--accent) 9%,var(--paper));border:1px solid color-mix(in srgb,var(--accent) 18%,transparent)}
.bx-res b{color:var(--accent);margin-right:4px;font-weight:600}
/* why us */
.why{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.w-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:28px;border-radius:16px;background:var(--paper);border:1px solid var(--rule);box-shadow:var(--card-shadow);overflow:hidden}
.w-n{font-family:var(--num);font-size:13px;font-weight:600;color:var(--accent)}
.w-card h3{font-size:22px;line-height:1.35;margin:0}
.w-card p{font-size:15px;color:var(--ink2);line-height:1.75;margin:0}
.w-proof{margin-top:auto;padding-top:18px;border-top:1px solid var(--rule)}
.w-proof b{display:block;font-family:var(--num);font-size:34px;font-weight:600;letter-spacing:-.02em;line-height:1.1;background:linear-gradient(135deg,#2a6dff,#7a3dff);-webkit-background-clip:text;background-clip:text;color:transparent}
.w-proof span{font-size:13px;color:var(--ink3)}
.w-rules{list-style:none;display:flex;flex-wrap:wrap;gap:10px 28px;margin:22px 0 0;padding:0;font-size:14px;color:var(--ink2)}
.w-rules li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:8px;vertical-align:middle}
@media(max-width:900px){.why{grid-template-columns:1fr}}
/* maturity chart v7 */
#steps.steps{height:380px;gap:22px;padding:0;border:0;border-bottom:1px solid var(--rule2);
 background:linear-gradient(var(--rule) 1px,transparent 1px) 0 0/100% 25%}
#steps.steps::after{display:none}
#steps .step{--k:0;padding:16px 14px;border-radius:14px 14px 4px 4px;border:1px solid color-mix(in srgb,var(--accent) 22%,transparent);
 background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 16%,var(--paper)),color-mix(in srgb,var(--accent) 4%,var(--paper)));
 color:var(--ink);box-shadow:inset 0 1px 0 rgba(255,255,255,.5);backdrop-filter:blur(6px)}
#steps .step::before,#steps .step::after{display:none}
#steps .step .num{color:var(--accent);font-size:12px;letter-spacing:.06em}
#steps .step b{font-size:17px}
#steps .step:hover{border-color:var(--accent);filter:none}
#steps .step.on{color:#fff;border-color:transparent;background:linear-gradient(180deg,#5d74ff 0%,#4a46f0 45%,#3a24c9 100%);
 box-shadow:0 26px 50px -22px rgba(74,70,240,.75),inset 0 1px 0 rgba(255,255,255,.4)}
#steps .step.on .num{color:rgba(255,255,255,.75)}
#steps .step.on::before{display:block;content:"当前查看";position:absolute;top:-30px;left:50%;transform:translateX(-50%);width:auto;height:auto;font-size:11px;padding:2px 9px;border-radius:999px;background:var(--ink);color:var(--bg);white-space:nowrap;skew:none}
#steps .step{overflow:visible}
.trend{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.trend path{fill:none;stroke:url(#none);stroke:color-mix(in srgb,var(--accent) 70%,transparent);stroke-width:2;stroke-dasharray:4 5;vector-effect:non-scaling-stroke;opacity:0;transition:opacity 1s .9s}
.in .trend path{opacity:1}
.tdot{position:absolute;width:10px;height:10px;margin:0 0 -5px -5px;border-radius:50%;background:var(--paper);border:2px solid var(--accent);opacity:0;transition:opacity .6s 1.1s;pointer-events:none}
.in .tdot{opacity:1}
/* contact QR */
.qr{display:flex;align-items:center;gap:14px;margin:4px 0 18px;padding:10px 14px 10px 10px;border-radius:12px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);width:fit-content}
.qr img{width:96px;height:96px;border-radius:8px;background:#fff;padding:6px}
.qr span{font-size:13px;color:rgba(255,255,255,.8);line-height:1.6}
.qr b{display:block;color:#fff;font-size:15px}
.foot-qr{display:block;width:88px;height:88px;margin-top:12px;padding:5px;border-radius:8px;background:#fff;border:1px solid var(--rule)}

/* Respect reduced motion for card hover effects. */
@media(prefers-reduced-motion:reduce){.bx:hover{transform:none}.bx:hover .bx-shot{transform:translateY(14px)}.bx-ai .bx-trio img,.glow::after,.trend path,.tdot{transition:none}.bx-ai .bx-trio li:hover img{transform:none}.glow:hover::after{opacity:0}}

/* v7.1 公众号二维码 */
.qrs{display:flex;flex-wrap:wrap;gap:10px;margin:4px 0 18px}
.qrs .qr{margin:0}
.foot-qrs{display:flex;gap:12px;margin-top:12px}
.foot-qrs figure{margin:0;text-align:center}
.foot-qrs img{display:block;width:80px;height:80px;padding:5px;border-radius:8px;background:#fff;border:1px solid var(--rule)}
.foot-qrs figcaption{margin-top:6px;font-size:12px;color:var(--ink3)}
@media (max-width:560px){.qrs{flex-direction:column}.qrs .qr{width:100%}}
/* v7.1 指南正文：列表、三级标题、链接 */
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.4em;color:var(--ink2)}
.prose li{font-size:17px;line-height:1.95;margin:4px 0}
.prose h3{font-size:19px;line-height:1.6;margin:24px 0 10px}
.prose strong{color:var(--ink);font-weight:600}
.prose a,.article-meta a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
@media(max-width:600px){.prose li{font-size:16px}}
.qrs{display:grid;grid-template-columns:1fr;width:fit-content;max-width:100%}
.qrs .qr{width:auto}
.prose section ul{list-style:disc}.prose section ol{list-style:decimal}