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html.lenis{height:auto}.lenis.lenis-smooth{scroll-behavior:auto!important}.lenis.lenis-smooth [data-lenis-prevent]{overscroll-behavior:contain}.lenis.lenis-stopped{overflow:hidden}

/* Revision from 修改建议.txt */
body{font-weight:500}.brand,.nav-links,.btn{font-weight:650}h1,h2,h3{font-weight:650}.nav-more summary:after{display:none}.logo-space{overflow:hidden;position:relative;flex:none}.logo-space img{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:84px;height:84px;max-width:none;border-radius:0}.brand-name{letter-spacing:-.03em}.nav-links a{position:relative}.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;border-radius:2px;background:var(--blue);transition:right .35s var(--spring)}.nav-links a.active{color:var(--blue)}.nav-links a.active:after{right:0}.nav-more.current summary{color:var(--blue)}.btn .arrow.down{font-weight:800;font-size:20px}.btn:hover .arrow.down{transform:translateY(3px)}.btn:active{transform:translateY(2px);box-shadow:0 1px 3px #00000008,inset 0 1px 5px #0000000f}.btn.primary:active{box-shadow:inset 0 2px 12px #1644bb,0 1px 3px #376dff20}.nav-cta{font-weight:700}.pause{width:34px;height:34px;padding:0;margin-left:10px;display:grid;place-items:center;border-radius:50%;font-weight:750;transition:transform .2s,background .2s,box-shadow .2s}.pause:hover{background:#f5f7ff;box-shadow:0 4px 12px #376dff18}.pause:active{transform:translateY(2px);box-shadow:none}.section{padding:82px 0}.section-head{margin-bottom:46px}.outlined{padding:52px}.screen-copy{padding:20px 24px 22px}.screen-copy p{margin-top:8px;font-size:15px}.screen-copy>span{display:none}.validation-section{padding-top:72px;background:linear-gradient(180deg,#fff,#fafbff 55%,#fff)}.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.value-card{min-height:238px;padding:28px 25px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 2px 12px #3158a508}.value-index{font-size:14px;color:var(--blue)}.value-card h3{margin:20px 0 25px}.value-shift{display:grid;gap:8px;color:#929292;font-size:14px}.value-shift b{color:#b8c8ed;font-size:21px;line-height:1}.value-shift strong{color:#3d3d3d;font-size:16px;line-height:1.55;font-weight:650}.architecture-flow{width:min(900px,100%);margin:auto;padding:34px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:0 18px 55px #192d5c0a}.arch-node{display:grid;grid-template-columns:48px 160px 1fr;align-items:center;gap:24px;padding:24px 28px;border:1px solid var(--line);border-radius:14px;background:#fff}.arch-node>span{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:#f4f7ff;color:var(--blue);font-size:14px}.arch-node h3{font-size:21px}.arch-node p{font-size:14px}.context-node{border-color:#85a6ff;background:linear-gradient(100deg,#fff,#f5f8ff);box-shadow:0 0 0 5px #f3f6ff}.arch-arrow{text-align:center;height:34px;line-height:34px;color:#9db3ec;font-size:22px}.feedback-loop{margin:25px 10px 2px;padding:20px 24px;border-radius:12px;background:#f4f7ff;display:flex;align-items:center;justify-content:center;gap:15px;flex-wrap:wrap;color:#7887aa;font-size:14px}.feedback-loop span{color:var(--blue);font-weight:650}.feedback-loop strong{font-weight:650;color:#4f5e7e}.feedback-loop b{font-weight:400;color:#b5c2df}.footer .wrap{gap:30px}.footer .wrap span:last-child{text-align:right}
.btn .arrow.chevron-right{width:10px;height:10px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;font-size:0;transform:rotate(-45deg)}.btn:hover .arrow.chevron-right{transform:translateX(4px) rotate(-45deg)}
@media(max-width:1000px){.value-grid{grid-template-columns:1fr 1fr}.outlined{padding:42px}}
@media(max-width:760px){.section{padding:64px 0}.section-head{margin-bottom:36px}.architecture-flow{padding:22px}.arch-node{grid-template-columns:42px 1fr;gap:14px;padding:22px}.arch-node h3{font-size:20px}.arch-node p{grid-column:1/-1}.footer .wrap span:last-child{text-align:left}}
@media(max-width:600px){.logo-space img{width:70px;height:70px}.brand-name{font-size:17px}.value-grid{grid-template-columns:1fr}.value-card{min-height:0}.validation-section{padding-top:54px}.screen-copy{padding:18px 20px}.outlined{padding:24px}.feedback-loop{gap:9px}.footer .wrap{gap:10px}}

/* Keep the long-form case study concise for portfolio review. */
.section{padding:64px 0}.section-head{margin-bottom:36px}.data-strip{padding-top:40px}.ticker-mask{margin-top:30px}.outlined{padding:42px}.workflow-picture{margin-top:34px}.screen-preview{padding:22px 18px 0}.diagnostic-stack{gap:24px}.diagnostic-art{min-height:350px;padding:28px 22px}.diagnostic-copy{padding:30px}.diagnostic-copy h3{font-size:31px}.evidence-grid{margin-top:24px}.boundary-grid{margin-top:28px}.architecture-flow{padding:26px}.arch-node{padding:20px 24px}.version-card{padding:28px}.next-section{padding:82px 0 88px}
@media(max-width:1000px){.value-card{min-height:205px;padding:23px}.diagnostic-art{min-height:320px}.diagnostic-copy{padding:25px}.architecture-flow{padding:24px}}
@media(max-width:760px){.section{padding:58px 0}.section-head{margin-bottom:32px}.diagnostic-art{min-height:0}.value-card{min-height:0}.next-section{padding:70px 0}}
@media(min-width:860px){.value-grid{grid-template-columns:repeat(4,1fr)}.value-card{min-height:220px;padding:22px}.value-card h3{margin:17px 0 20px}}
.diagnostic-panel:first-child{transform-origin:50% 0}

/* Animated quality loop and responsive polish. */
.steps{--flow-duration:1.9s;width:min(1120px,100%);margin-inline:auto}
.step-line span{position:relative;z-index:2;transition:color .35s,background .35s,border-color .35s,box-shadow .35s,transform .35s var(--spring)}
.step-line:before{content:"";position:absolute;z-index:1;left:58px;right:-16px;top:21px;height:4px;border-radius:4px;background:linear-gradient(90deg,#376dff00,#376dff 38%,#63d7ff 62%,#376dff00);transform:scaleX(0);transform-origin:left center;opacity:0}
.step.is-complete .step-line:after{border-top-style:solid;border-color:#86a5ff}
.step.is-active .step-line span{color:#fff;background:var(--blue);border-color:var(--blue);box-shadow:0 0 0 8px #376dff12,0 8px 26px #376dff3a;transform:scale(1.08)}
.step.is-active h3{color:var(--blue)}
.step.is-active .step-line:before{opacity:1;animation:workflow-flow var(--flow-duration) ease-in-out both}
.step:last-child .step-line:before{display:none}
.step:last-child.is-active .step-line span{animation:workflow-finish var(--flow-duration) ease-in-out}
@keyframes workflow-flow{0%{transform:scaleX(0);opacity:0}16%{opacity:1}82%{opacity:1}100%{transform:scaleX(1);opacity:0}}
@keyframes workflow-finish{0%,100%{box-shadow:0 0 0 8px #376dff12,0 8px 26px #376dff3a}50%{box-shadow:0 0 0 14px #376dff0d,0 10px 34px #376dff4a}}

@media(min-width:1440px){.wrap{width:min(1280px,calc(100% - 96px))}.nav-shell.expanded{width:min(1280px,calc(100% - 96px))}.hero-stage{width:min(1220px,calc(100% - 96px));height:600px}}
@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.hero-stage{width:calc(100% - 48px);height:clamp(390px,50vw,520px)}.steps{gap:14px}.step>p:last-child{font-size:14px}.screen-grid{gap:18px}.diagnostic-copy{padding:24px}}
@media(max-width:820px){.nav-shell,.nav-shell.expanded{width:calc(100% - 32px)}.nav>.btn,.nav-links{display:none}.mobile-toggle{display:block;width:42px;height:42px;border:1px solid var(--line);background:white;border-radius:9px;font-size:20px}.nav-links.open{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:18px;padding:22px;border:1px solid var(--line);border-radius:12px;background:#fffffff5;box-shadow:0 16px 44px #1f31551a;backdrop-filter:blur(18px)}.nav-links>a:nth-last-child(-n+2){display:block}.nav-menu{position:static;width:100%;margin-top:10px;box-shadow:none}.hero{padding-top:152px}.hero-stage{height:clamp(300px,55vw,430px);margin-top:58px}.steps{grid-template-columns:1fr;gap:0}.step{display:grid;grid-template-columns:52px 1fr;column-gap:18px;padding-bottom:30px}.step-line{grid-row:span 3;margin-bottom:0}.step-line:after{left:22px;top:50px;bottom:-22px;right:auto;border-left:1px dashed #d5dce9;border-top:0}.step-line:before{left:20px;right:auto;top:50px;bottom:-22px;width:4px;height:auto;transform:scaleY(0);transform-origin:center top;background:linear-gradient(180deg,#376dff00,#376dff 38%,#63d7ff 62%,#376dff00)}.step.is-complete .step-line:after{border-left-style:solid;border-top:0}.step.is-active .step-line:before{animation-name:workflow-flow-vertical}.step h3{font-size:23px;margin-bottom:8px}.step .question{margin-bottom:7px}.screen-grid{grid-template-columns:1fr 1fr}.screen-card,.screen-card.wide{grid-column:span 1}.screen-card:last-child{grid-column:span 2}.diagnostic-panel{grid-template-columns:1fr}.diagnostic-art{min-height:0}.value-grid{grid-template-columns:1fr 1fr}}
@keyframes workflow-flow-vertical{0%{transform:scaleY(0);opacity:0}16%{opacity:1}82%{opacity:1}100%{transform:scaleY(1);opacity:0}}
@media(max-width:600px){.wrap{width:calc(100% - 28px)}.hero-copy{width:calc(100% - 28px)}.hero-stage{width:calc(100% - 20px);height:clamp(220px,66vw,300px);margin-top:48px}.hero .eyebrow span{display:none}.hero h1{font-size:42px}.hero .lead{font-size:15px;line-height:1.8}.section{padding:54px 0}.outlined{padding:22px}.screen-grid,.value-grid,.input-grid{grid-template-columns:1fr}.screen-card,.screen-card.wide,.screen-card:last-child{grid-column:auto}.screen-preview{padding:14px 12px 0}.diagnostic-copy{padding:24px 20px}.diagnostic-copy h3{font-size:28px}.case-stats strong{font-size:38px}.architecture-flow{padding:14px}.arch-node{padding:18px 16px}.image-dialog{width:calc(100vw - 16px);max-width:none;border-radius:10px}.footer .wrap{align-items:flex-start}}
@media(max-width:390px){h1{font-size:38px}h2{font-size:29px}.brand-name{font-size:16px}.logo-space{width:34px;height:34px}.mobile-toggle{width:38px;height:38px}.hero{padding-top:132px}.hero-stage{height:220px}.input-card{padding:20px 16px}.case-stats{grid-template-columns:1fr;gap:12px}.analysis-chain span{font-size:12px}.footer{font-size:13px}}
@media(prefers-reduced-motion:reduce){.step.is-active .step-line:before,.step:last-child.is-active .step-line span{animation:none}.step.is-active .step-line:before{display:none}}

/* Closing statement inspired by the reference site's blue grid panel. */
.next-section{width:min(1280px,calc(100% - 60px));margin:54px auto 40px;padding:104px 32px 110px;border:0;border-radius:28px;color:#fff;box-shadow:0 28px 70px #376dff2b;background-color:#376dff;background-image:linear-gradient(90deg,#ffffff12 1px,transparent 1px),linear-gradient(#ffffff12 1px,transparent 1px),linear-gradient(180deg,#2f68ff 0%,#7197ff 100%);background-size:78px 78px,78px 78px,100% 100%}
.next-section .tag{color:#fff;border-color:#ffffff42;background:#ffffff18;box-shadow:inset 0 1px 0 #ffffff28}
.next-section h2{color:#fff}
.next-section p{color:#ffffffd1}
@media(max-width:820px){.next-section{width:calc(100% - 32px);margin:36px auto 24px;padding:76px 24px 82px;border-radius:22px}}
@media(max-width:600px){.next-section{width:calc(100% - 20px);padding:62px 20px 68px;border-radius:18px;background-size:52px 52px,52px 52px,100% 100%}}

/* Compact product-manager mark and optical workflow alignment. */
.logo-space{width:22px;height:22px;background:transparent;box-shadow:none;border-radius:0}
.logo-space img{position:static;transform:none;width:22px;height:22px;object-fit:contain;border-radius:0}
.steps{position:relative;left:18px}
@media(max-width:1100px){.steps{left:10px}}
@media(max-width:820px){.steps{left:0}}
@media(max-width:600px){.logo-space{width:18px;height:18px}.logo-space img{width:18px;height:18px}}