*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#17171A;color:#F1EEEE;font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.72;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;left:16px;top:16px;transform:translateY(-160%);z-index:2000;background:#E59A3A;color:#121214;padding:10px 14px;border-radius:8px;font-weight:800}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(18,18,20,.94);border-bottom:1px solid rgba(241,238,238,.08);backdrop-filter:blur(14px)}
.header-inner{width:min(1180px,calc(100% - 40px));min-height:78px;margin:0 auto;display:flex;align-items:center;gap:26px}
.brand-lockup{display:flex;align-items:center;gap:12px;min-width:max-content}
.brand-lockup img{width:44px;height:44px;object-fit:contain}
.brand-name{font-size:1.12rem;font-weight:850;letter-spacing:.04em}
.primary-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.primary-nav a{padding:10px 12px;border-radius:999px;color:#C7C1C4;font-size:.95rem;transition:.2s ease}
.primary-nav a:hover,.primary-nav a[aria-current=page]{color:#fff;background:#2A2A2F}
.search-open{border:1px solid #454047;background:transparent;color:#F1EEEE;padding:9px 14px;border-radius:999px}
.search-open:hover{border-color:#C84A5A;background:#2A2A2F}
.menu-toggle{display:none;background:transparent;border:0;color:#fff;width:42px;height:42px;padding:10px}
.menu-lines,.menu-lines:before,.menu-lines:after{display:block;width:22px;height:2px;background:currentColor;position:relative}
.menu-lines:before,.menu-lines:after{content:"";position:absolute;left:0}
.menu-lines:before{top:-7px}
.menu-lines:after{top:7px}
.section-shell{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:74px 0}
.section-heading{max-width:820px;margin-bottom:32px}
.narrow-heading{max-width:760px}
.compact-heading{margin-bottom:20px}
.eyebrow{margin:0 0 12px;color:#D08A48;font-size:.82rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}
.section-heading h2,.feature-copy h2,.notes-lead h2,.image-note-copy h2,.submit-preview h2,.info-band h2,.warning-heading h2,.related-route h2,.policy-list h2,.guide-chapter h2,.simple-hero h1,.inner-hero h1,.home-hero h1,.not-found h1{line-height:1.18;letter-spacing:-.025em}
.home-hero{padding-top:58px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:54px;align-items:center}
.home-hero h1{font-size:clamp(2.5rem,5vw,5rem);margin:0 0 22px;max-width:820px}
.hero-lead{font-size:1.12rem;color:#C8C2C5;max-width:760px;margin:0}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:10px;font-weight:800;border:1px solid transparent}
.button-primary{background:#C84A5A;color:#fff}
.button-primary:hover{background:#D35C6B}
.button-quiet{background:#242428;border-color:#3C393F;color:#F1EEEE}
.button-quiet:hover{border-color:#D08A48}
.hero-definition{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:32px 0 0}
.hero-definition div{border-top:1px solid #3B373D;padding-top:14px}
.hero-definition dt{font-size:.78rem;color:#9C969A;margin-bottom:5px}
.hero-definition dd{margin:0;font-weight:700;font-size:.95rem}
.hero-visual{margin:0;background:#222226;border:1px solid #343238;border-radius:22px;padding:14px;box-shadow:0 30px 80px rgba(0,0,0,.24)}
.hero-visual img{width:100%;aspect-ratio:1.18/1;object-fit:cover;border-radius:14px}
.hero-visual figcaption{font-size:.78rem;color:#989296;padding:12px 4px 2px}
.intent-strip{display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;border-top:1px solid rgba(241,238,238,.08)}
.intent-list{display:flex;flex-direction:column}
.intent-item{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid #343238}
.intent-item:first-child{padding-top:0}
.intent-number{font-size:.78rem;color:#D08A48;font-weight:850;letter-spacing:.12em}
.intent-item h3{margin:0 0 7px;font-size:1.1rem}
.intent-item p{margin:0;color:#AAA4A7}
.split-feature{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
.split-feature.reverse{grid-template-columns:1.08fr .92fr}
.feature-image{background:#222226;border-radius:20px;overflow:hidden;min-height:420px}
.feature-image img{width:100%;height:100%;min-height:420px;object-fit:cover}
.tall-image{min-height:560px}
.tall-image img{min-height:560px}
.feature-copy h2{font-size:clamp(1.8rem,3vw,3rem);margin:14px 0 18px}
.feature-copy p{color:#B8B2B6}
.status-label{display:inline-flex;padding:6px 10px;border:1px solid rgba(208,138,72,.4);border-radius:999px;color:#E7B77D;background:rgba(208,138,72,.08);font-size:.78rem;font-weight:800}
.check-list{list-style:none;padding:0;margin:22px 0}
.check-list li{position:relative;padding:10px 0 10px 28px;border-bottom:1px dashed #3A373C;color:#D1CCCF}
.check-list li:before{content:"";position:absolute;left:2px;top:19px;width:8px;height:8px;border-radius:50%;background:#D08A48}
.text-link{display:inline-flex;color:#E9A34F;font-weight:800;border-bottom:1px solid rgba(229,154,58,.35);padding-bottom:2px}
.text-link:hover{color:#FFC272}
.path-section{border-top:1px solid rgba(241,238,238,.08)}
.path-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#39363B;border:1px solid #39363B;border-radius:18px;overflow:hidden}
.path-step{background:#1E1E21;padding:30px}
.path-step>span{color:#D08A48;font-size:.78rem;font-weight:900;letter-spacing:.14em}
.path-step h3{font-size:1.25rem;margin:16px 0 10px}
.path-step p{color:#AFA9AD;margin:0 0 22px}
.path-step a{font-weight:800;color:#F0C08A}
.app-preview{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;background:linear-gradient(135deg,rgba(200,74,90,.08),rgba(208,138,72,.03));border:1px solid rgba(200,74,90,.2);border-radius:24px;padding-left:52px;padding-right:52px}
.app-preview-copy h2{font-size:clamp(1.9rem,3.6vw,3.35rem);margin:0 0 18px;line-height:1.16}
.app-preview-copy>p:not(.eyebrow){color:#B7B0B4}
.mini-index{display:flex;flex-direction:column;margin:24px 0 28px;border-top:1px solid #433D42}
.mini-index a{display:grid;grid-template-columns:140px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid #433D42}
.mini-index strong{color:#F1EEEE}
.mini-index span{color:#9F999D}
.app-preview-visual{position:relative;padding:18px 0 38px}
.app-preview-visual>img:first-child{border-radius:18px;width:88%;margin-left:auto}
.overlap-image{position:absolute;left:0;bottom:0;width:58%;border:8px solid #1A1A1D;border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.4)}
.reading-notes{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px}
.notes-lead h2{font-size:clamp(1.8rem,3vw,2.8rem);margin:0}
.notes-columns{display:grid;grid-template-columns:1fr;gap:0}
.notes-columns article{padding:22px 0;border-top:1px solid #39363B}
.notes-columns article:last-child{border-bottom:1px solid #39363B}
.notes-columns h3{margin:0 0 8px}
.notes-columns p{margin:0 0 10px;color:#AFA9AD}
.notes-columns a{color:#E8AA63;font-weight:750}
.image-note-band{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;background:#121214;border-radius:22px;padding-left:48px;padding-right:48px}
.image-note-band img{border-radius:14px}
.image-note-copy h2{font-size:clamp(1.8rem,3vw,3rem);margin:0 0 18px}
.image-note-copy p{color:#B7B0B4}
.submit-preview{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:center}
.submit-preview img{border-radius:18px}
.submit-preview h2{font-size:clamp(1.8rem,3vw,3rem);margin:0 0 18px}
.submit-preview p{color:#B1ABAF}
.home-faq{max-width:920px}
.faq-list{border-top:1px solid #3A373D}
.faq-item{border-bottom:1px solid #3A373D}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 44px 20px 0;font-weight:800;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:"+";position:absolute;right:8px;top:18px;color:#D08A48;font-size:1.4rem}
.faq-item[open] summary:after{content:"−"}
.faq-answer{padding:0 54px 18px 0;color:#AAA4A7}
.faq-answer p{margin:0}
.home-faq>.button{margin-top:22px}
.closing-route{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:center}
.closing-route img{border-radius:18px}
.closing-route h2{font-size:clamp(1.8rem,3vw,3rem);margin:0 0 16px}
.closing-route p{color:#B1ABAF}
.top-breadcrumb{padding-top:28px;padding-bottom:0}
.breadcrumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:0;color:#8F898D;font-size:.86rem}
.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#555158}
.breadcrumbs a:hover{color:#E4A863}
.inner-hero{display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:center;padding-top:42px}
.inner-hero h1{font-size:clamp(2.3rem,4.6vw,4.5rem);margin:0 0 22px}
.inner-hero img{width:100%;border-radius:20px;max-height:520px;object-fit:cover}
.article-section{border-top:1px solid rgba(241,238,238,.08)}
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.scenario-item{background:#222226;border:1px solid #343238;border-radius:16px;padding:26px}
.scenario-item h3{margin:0 0 9px}
.scenario-item p{margin:0;color:#AAA4A7}
.number-list{padding:0;margin:24px 0 0;list-style:none;counter-reset:appstep}
.number-list li{counter-increment:appstep;position:relative;padding:15px 0 15px 52px;border-top:1px solid #3A373D;color:#C7C1C4}
.number-list li:before{content:counter(appstep,decimal-leading-zero);position:absolute;left:0;color:#D08A48;font-weight:900;font-size:.78rem;letter-spacing:.08em}
.info-band{background:#222226;border:1px solid #343238;border-radius:20px;padding-left:46px;padding-right:46px}
.info-band>div{max-width:860px}
.info-band h2{font-size:clamp(1.8rem,3vw,2.8rem);margin:0 0 16px}
.info-band p{color:#B6B0B3}
.related-route{border-top:1px solid rgba(241,238,238,.08)}
.related-route h2{font-size:1.7rem;margin:0 0 24px}
.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.related-links a{display:flex;flex-direction:column;gap:7px;padding:22px;border:1px solid #38353A;border-radius:14px;background:#1E1E21;transition:.2s ease}
.related-links a:hover{border-color:#C84A5A;transform:translateY(-2px)}
.related-links strong{font-size:1.04rem}
.related-links span{color:#999397;font-size:.92rem}
.guide-index{padding-top:42px;padding-bottom:30px}
.anchor-index{display:flex;gap:10px;flex-wrap:wrap}
.anchor-index a{padding:9px 13px;border:1px solid #3B383D;border-radius:999px;color:#D8D3D5}
.anchor-index a:hover{border-color:#D08A48;color:#fff}
.guide-chapter{display:grid;grid-template-columns:90px 1fr;gap:36px;padding-top:46px;padding-bottom:46px;border-top:1px solid rgba(241,238,238,.08)}
.guide-number{font-size:1.4rem;color:#D08A48;font-weight:900;letter-spacing:.12em}
.guide-content{max-width:850px}
.guide-content h2{font-size:2rem;margin:0 0 14px}
.guide-content>p{color:#B4AEB2}
.editorial-list{border-top:1px solid #3A373D}
.editorial-list article{display:grid;grid-template-columns:60px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid #3A373D}
.editorial-list article>span{color:#D08A48;font-size:.78rem;font-weight:900;letter-spacing:.14em;padding-top:5px}
.editorial-list h3{margin:0 0 8px}
.editorial-list p{margin:0;color:#AAA4A7}
.warning-panel{background:#211B1C;border:1px solid rgba(200,74,90,.35);border-radius:20px;padding-left:46px;padding-right:46px}
.warning-heading{max-width:760px}
.warning-heading h2{font-size:clamp(1.8rem,3vw,2.8rem);margin:0 0 14px}
.boundary-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 34px;padding:0;margin:28px 0 0;list-style:none}
.boundary-list li{position:relative;padding:14px 0 14px 28px;border-top:1px solid rgba(241,238,238,.1);color:#C8C2C5}
.boundary-list li:before{content:"!";position:absolute;left:0;color:#E59A3A;font-weight:900}
.evidence-flow{display:grid;grid-template-columns:.7fr 1.3fr;gap:48px}
.evidence-flow h2{font-size:2.2rem;margin:0}
.status-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.status-grid article{background:#222226;border:1px solid #353238;border-radius:14px;padding:22px}
.status-grid strong{color:#E6AA65}
.status-grid p{margin:8px 0 0;color:#AAA4A7}
.about-intro{padding-bottom:40px}
.principle-list{padding-top:40px}
.policy-list{max-width:980px}
.policy-row{display:grid;grid-template-columns:70px 1fr;gap:24px;padding:28px 0;border-top:1px solid #3A373D}
.policy-row:last-child{border-bottom:1px solid #3A373D}
.policy-row>span{color:#D08A48;font-weight:900;letter-spacing:.12em}
.policy-row h3{margin:0 0 8px}
.policy-row p{margin:0;color:#AAA4A7}
.simple-hero{max-width:980px;padding-top:58px;padding-bottom:50px}
.simple-hero h1{font-size:clamp(2.3rem,4.8vw,4.7rem);margin:0 0 20px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.contact-grid article{padding:28px;background:#222226;border:1px solid #353238;border-radius:16px}
.contact-grid h3{margin:0 0 10px}
.contact-grid p{margin:0;color:#AAA4A7}
.search-form{margin-top:22px}
.search-form label{display:block;font-weight:750;margin-bottom:8px}
.search-row{display:flex;gap:10px}
.search-row input{flex:1;min-width:0;border:1px solid #444047;background:#17171A;color:#fff;border-radius:10px;padding:12px 14px;outline:none}
.search-row input:focus{border-color:#D08A48;box-shadow:0 0 0 3px rgba(208,138,72,.13)}
.search-page-hero{padding-bottom:36px}
.search-form-page{max-width:720px}
.search-results{padding-top:30px;min-height:420px}
.search-results h2{font-size:2rem;margin:0 0 8px}
.result-count{color:#9F999D}
.search-result-list{margin-top:26px;border-top:1px solid #39363B}
.search-result-list article{padding:24px 0;border-bottom:1px solid #39363B}
.search-result-list h3{margin:0 0 8px;font-size:1.25rem}
.search-result-list h3 a:hover{color:#E9A34F}
.search-result-list p{margin:0 0 10px;color:#AAA4A7}
.not-found{min-height:70vh;display:flex;flex-direction:column;justify-content:center;max-width:980px}
.error-code{font-size:clamp(5rem,16vw,12rem);line-height:.8;margin:0 0 24px;color:#C84A5A;font-weight:950;letter-spacing:-.06em}
.not-found h1{font-size:clamp(2.1rem,4vw,4rem);margin:0 0 18px}
.not-found>p:not(.error-code){color:#AFA9AD;max-width:760px}
.not-found .related-links{margin-top:28px;grid-template-columns:repeat(2,1fr)}
.search-modal[hidden]{display:none!important}
.search-modal{position:fixed;inset:0;z-index:1800;background:rgba(0,0,0,.74);display:grid;place-items:start center;padding:10vh 20px 20px}
.search-dialog{position:relative;width:min(680px,100%);background:#222226;border:1px solid #3E3A40;border-radius:20px;padding:34px;box-shadow:0 34px 100px rgba(0,0,0,.56)}
.search-dialog h2{font-size:2rem;margin:0 0 8px}
.search-dialog>p:not(.eyebrow){color:#AAA4A7}
.search-close{position:absolute;right:18px;top:16px;width:40px;height:40px;border-radius:50%;border:1px solid #454047;background:#17171A;color:#fff;font-size:1.5rem}
.site-footer{border-top:1px solid rgba(241,238,238,.08);background:#121214;margin-top:70px}
.footer-main{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:56px 0 42px;display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:38px}
.footer-brand p{color:#8F898D;max-width:360px;font-size:.92rem}
.footer-logo{display:flex;align-items:center;gap:10px;font-size:1.08rem}
.footer-logo img{width:40px;height:40px;object-fit:contain}
.footer-group h2{font-size:.85rem;margin:0 0 14px;color:#D08A48}
.footer-group ul{list-style:none;padding:0;margin:0}
.footer-group li{margin:8px 0}
.footer-group a{color:#ABA5A9;font-size:.92rem}
.footer-group a:hover{color:#fff}
.footer-bottom{width:min(1180px,calc(100% - 40px));margin:0 auto;padding:18px 0 30px;border-top:1px solid #28262A;display:flex;justify-content:space-between;gap:20px;color:#817B80;font-size:.84rem}
.footer-bottom p{margin:0}
.back-to-top:hover{color:#fff}
@media(max-width:1024px){
.header-inner{gap:16px}
.primary-nav{gap:0}
.primary-nav a{padding:9px 9px;font-size:.9rem}
.hero-grid,.inner-hero,.split-feature,.app-preview,.reading-notes,.image-note-band,.submit-preview,.closing-route,.evidence-flow{gap:36px}
.home-hero h1{font-size:clamp(2.5rem,6.6vw,4.4rem)}
.intent-strip{gap:36px}
.footer-main{grid-template-columns:1.4fr repeat(3,1fr);gap:24px}
}
@media(max-width:860px){
.header-inner{min-height:70px}
.menu-toggle{display:block;margin-left:auto}
.primary-nav{position:absolute;left:20px;right:20px;top:70px;background:#202024;border:1px solid #3B383D;border-radius:14px;padding:10px;display:none;flex-direction:column;align-items:stretch;box-shadow:0 22px 70px rgba(0,0,0,.4)}
.primary-nav.is-open{display:flex}
.primary-nav a{padding:12px}
.search-open{margin-left:0}
.hero-grid,.intent-strip,.split-feature,.split-feature.reverse,.app-preview,.reading-notes,.image-note-band,.submit-preview,.closing-route,.inner-hero,.evidence-flow{grid-template-columns:1fr}
.inner-hero img{max-height:420px}
.hero-visual{max-width:680px}
.hero-definition{grid-template-columns:1fr 1fr 1fr}
.path-flow{grid-template-columns:1fr}
.app-preview{padding:46px 32px}
.app-preview-visual{max-width:650px}
.reading-notes{gap:20px}
.notes-lead{max-width:700px}
.image-note-band{padding:42px 32px}
.submit-image{max-width:620px}
.scenario-grid{grid-template-columns:1fr}
.related-links{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.boundary-list{grid-template-columns:1fr}
.footer-main{grid-template-columns:1fr 1fr}
.footer-brand{grid-column:1/-1}
.not-found .related-links{grid-template-columns:1fr}
}
@media(max-width:600px){
.section-shell{width:min(100% - 28px,1180px);padding:52px 0}
.header-inner{width:min(100% - 24px,1180px)}
.brand-lockup img{width:38px;height:38px}
.brand-name{font-size:1rem}
.search-open{font-size:.84rem;padding:8px 10px}
.home-hero{padding-top:38px}
.home-hero h1,.inner-hero h1,.simple-hero h1{font-size:2.38rem}
.hero-lead{font-size:1rem}
.hero-definition{grid-template-columns:1fr}
.hero-actions{flex-direction:column;align-items:stretch}
.button{width:100%}
.intent-item{grid-template-columns:42px 1fr}
.feature-image,.feature-image img,.tall-image,.tall-image img{min-height:320px}
.app-preview{width:calc(100% - 20px);padding:38px 20px}
.mini-index a{grid-template-columns:1fr;gap:2px}
.app-preview-visual>img:first-child{width:92%}
.overlap-image{width:62%;border-width:5px}
.image-note-band,.warning-panel,.info-band{width:calc(100% - 20px);padding:36px 20px}
.guide-chapter{grid-template-columns:1fr;gap:10px}
.guide-number{font-size:1rem}
.status-grid{grid-template-columns:1fr}
.policy-row{grid-template-columns:46px 1fr;gap:14px}
.editorial-list article{grid-template-columns:42px 1fr;gap:12px}
.search-row{flex-direction:column}
.search-dialog{padding:28px 20px}
.footer-main{grid-template-columns:1fr;padding-top:42px}
.footer-brand{grid-column:auto}
.footer-bottom{flex-direction:column}
.not-found .related-links{grid-template-columns:1fr}
.site-footer{margin-top:40px}
}
@media(max-width:375px){
.header-inner{width:min(100% - 18px,1180px);gap:8px}
.brand-lockup{gap:7px}
.brand-lockup img{width:34px;height:34px}
.search-open{padding:7px 9px}
.section-shell{width:min(100% - 22px,1180px)}
.home-hero h1,.inner-hero h1,.simple-hero h1{font-size:2.05rem}
.path-step{padding:24px 20px}
.app-preview{width:calc(100% - 12px)}
}