/* roulang page: index */
:root{--bg:#101717;--surface:#182222;--surface2:#202d2b;--ink:#f0f4ed;--muted:#a8b8b0;--line:#344440;--accent:#c5f66a;--teal:#8fdbce;--paper:#f1f3ea;--dark:#182923;--radius:20px;--shadow:0 18px 48px #0002}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s}a:hover{color:var(--accent)}img,svg{max-width:100%;vertical-align:middle}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:5px}::selection{color:var(--bg);background:var(--accent)}.container{max-width:1216px;padding-left:28px;padding-right:28px}.site-header{border-bottom:1px solid var(--line);background:#121b1a}.brand-row{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{font-size:21px;letter-spacing:-.5px;font-weight:800;display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:39px;height:39px;background:var(--accent);color:var(--bg);border-radius:11px;transform:rotate(-6deg);font-size:23px}.header-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:9px}.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}.nav-grid{display:flex;gap:10px;padding-bottom:16px}.nav-grid a{display:flex;align-items:center;gap:10px;font-size:14px;border:1px solid var(--line);border-radius:10px;padding:9px 20px;color:var(--muted)}.nav-grid a:hover,.nav-grid a.active{background:var(--surface2);color:var(--ink);border-color:#7b9364}.nav-icon{font-size:19px;color:var(--accent)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(34px,5.2vw,66px);font-weight:800;line-height:1.16;letter-spacing:-2px}h2{font-size:clamp(26px,3vw,38px);font-weight:750;line-height:1.35;letter-spacing:-1px;margin-bottom:20px}h3{font-size:20px;line-height:1.5;font-weight:700;margin-bottom:13px}p{color:var(--muted);margin-bottom:20px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:2px;color:var(--accent);margin-bottom:20px;display:block}.hero{padding:42px 0 0}.hero-cover{position:relative;overflow:hidden;border:1px solid #4b6051;border-radius:24px;background:#20382e;min-height:520px;padding:56px}.hero-cover:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#14251fed 0%,#14251fe6 46%,#14251f18 100%);pointer-events:none}.arena{position:absolute;width:60%;height:100%;right:0;top:0;opacity:.75}.hero-copy{position:relative;z-index:1;max-width:760px}.hero-copy p{max-width:680px;color:#c7d4c9;font-size:15px}.hero h1 span{display:block;color:var(--accent);margin-top:8px}.badge-soft{display:inline-block;border:1px solid #71805e;background:#c5f66a10;color:var(--accent);border-radius:6px;font-size:12px;padding:4px 10px}.hero-strip{display:flex;align-items:center;gap:26px;position:relative;z-index:1;margin-top:34px;border-top:1px solid #ffffff25;padding-top:24px}.hero-strip strong{font-size:20px;display:block}.small-label{font-size:12px;color:#acbfb0}.btn{border-radius:9px;padding:12px 23px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}.btn-accent{background:var(--accent);color:#172318;border:1px solid var(--accent)}.btn-accent:hover{background:#dafc9c;color:#172318;box-shadow:0 5px 24px #c5f66a20;transform:translateY(-2px)}.btn:active{transform:translateY(1px)}.btn-outline-custom{border:1px solid var(--line);color:var(--ink);background:transparent}.btn-outline-custom:hover{border-color:var(--accent);color:var(--accent)}.section{padding:80px 0;border-bottom:1px solid var(--line)}.section-intro{max-width:760px;margin-bottom:34px}.section-intro p{margin-bottom:0}.section-top{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:32px}.section-top .section-intro{margin-bottom:0}.section-num{font-size:12px;color:var(--muted);white-space:nowrap;font-family:monospace}.card-custom{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--surface);height:100%;transition:transform .2s,border-color .2s,box-shadow .2s}.card-custom:hover{transform:translateY(-4px);border-color:#759567;box-shadow:var(--shadow)}.card-custom p{font-size:14px;margin:0}.card-icon{width:43px;height:43px;display:grid;place-items:center;border:1px solid var(--line);border-radius:12px;color:var(--accent);margin-bottom:24px;font-size:20px}.region-row{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.region{padding:27px;border-right:1px solid var(--line)}.region:last-child{border:0}.region strong{font-size:30px;color:var(--teal);font-weight:700;display:block;margin-bottom:12px}.region h3{font-size:16px}.region p{font-size:14px;margin:0}.light{background:var(--paper);color:var(--dark);border-color:#d9dfd3}.light p{color:#58685e}.light .eyebrow{color:#4b7028}.light .card-custom{background:#fff;border-color:#d7ded3}.light .card-icon{color:#476d21;border-color:#d7ded3}.split-note{border-left:3px solid #729a39;padding-left:26px;margin-top:30px}.feature-list{list-style:none;margin:0;padding:0}.feature-list li{display:flex;gap:16px;padding:22px 0;border-bottom:1px solid #ced6c9}.feature-list li:first-child{padding-top:0}.check{color:#597d35;font-size:21px}.feature-list strong{display:block;margin-bottom:6px}.feature-list p{font-size:14px;margin:0}.step-number{font-size:44px;line-height:1;font-weight:800;color:#6f865e;margin-bottom:20px;display:block}.timeline{border-left:1px solid var(--line);padding-left:28px;margin-left:8px}.timeline article{position:relative;padding:0 0 28px}.timeline article:before{content:"";width:11px;height:11px;position:absolute;left:-34px;top:9px;background:var(--accent);border-radius:50%}.timeline article:last-child{padding-bottom:0}.timeline p{font-size:14px;margin:0}.case-panel{padding:36px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}.case-tag{color:var(--teal);font-size:12px;margin-bottom:14px}.case-panel ul{padding-left:20px;color:var(--muted);font-size:14px;margin:16px 0 0}.quote-panel{border-radius:20px;background:#c5f66a;color:#20321d;padding:32px;height:100%}.quote-panel p{color:#30412b;font-size:19px;font-weight:650}.quote-panel small{font-size:12px;color:#45573b}.channel-link{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:18px;padding:28px;background:var(--surface)}.channel-link p{font-size:14px;margin:0}.channel-link h3{margin-bottom:8px}.channel-arrow{font-size:28px;color:var(--accent);margin-left:20px}.article-item{display:grid;grid-template-columns:100px 1fr 26px;gap:25px;border-top:1px solid var(--line);padding:25px 0}.article-type{font-size:12px;color:var(--teal);padding-top:6px}.article-item h3{font-size:20px;margin-bottom:8px}.article-item p{font-size:14px;margin:0;max-width:840px}.article-index{color:#839482;font-size:14px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:30px}.metric{border-top:2px solid #adc196;padding-top:20px}.metric strong{font-size:42px;line-height:1.2;display:block;color:var(--dark);margin-bottom:8px}.metric span{font-size:14px;color:#53634e}.notice{padding:24px 28px;background:var(--surface2);border-radius:14px;border-left:3px solid var(--teal);margin-top:30px}.notice p{margin:0;font-size:14px}.cta{background:#1c2c24}.cta-inner{display:grid;grid-template-columns:1fr .8fr;gap:60px;align-items:center}.cta p{margin:0}.reminder-box{border:1px solid #4a6048;background:#152019;border-radius:18px;padding:28px}.form-check{display:flex;gap:12px;padding:0;margin:16px 0 22px;align-items:flex-start}.form-check-input{float:none!important;margin:7px 0 0!important;flex-shrink:0;background-color:transparent;border-color:#7c8d74}.form-check-input:checked{background-color:#729840;border-color:#729840}.form-check-label{font-size:14px;color:var(--muted)}.form-feedback{min-height:26px;font-size:13px;color:var(--teal);margin-top:13px}.site-footer{padding:42px 0 24px}.footer-main{display:flex;justify-content:space-between;gap:36px;padding-bottom:28px;border-bottom:1px solid var(--line)}.footer-main p{font-size:12px;max-width:520px;margin:14px 0 0}.footer-links{display:flex;align-items:flex-start;gap:24px;font-size:13px;color:var(--muted)}.copyright{font-size:11px;color:#83988a;margin-top:22px;display:flex;justify-content:space-between;gap:16px}
@media(min-width:1400px){.container{max-width:1260px}}
@media(max-width:1024px){.hero-cover{padding:40px}.hero-copy{max-width:700px}.region{padding:20px}.cta-inner{gap:30px}.section{padding:64px 0}.region strong{font-size:25px}}
@media(max-width:768px){.container{padding-left:22px;padding-right:22px}.header-note{display:none}.hero-cover{padding:32px;min-height:auto}.arena{width:100%;opacity:.3}.hero-copy p{font-size:14px}.hero-strip{flex-wrap:wrap;gap:20px}.region-row{grid-template-columns:repeat(2,1fr)}.region:nth-child(2){border-right:0}.region:nth-child(-n+2){border-bottom:1px solid var(--line)}.section-top{align-items:flex-start}.section-num{display:none}.cta-inner{grid-template-columns:1fr}.metrics{grid-template-columns:repeat(2,1fr)}.footer-main{flex-direction:column}.copyright{flex-direction:column;gap:5px}.section{padding:54px 0}.article-item{grid-template-columns:70px 1fr;gap:16px}.article-index{display:none}}
@media(max-width:520px){.container{padding-left:16px;padding-right:16px}.brand-row{min-height:76px}.brand{font-size:18px}.nav-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.nav-grid a{padding:9px 12px;font-size:13px;justify-content:center}.hero{padding-top:20px}.hero-cover{padding:28px 22px;border-radius:18px}h1{letter-spacing:-1px;font-size:35px}.hero-strip{display:grid;grid-template-columns:1fr 1fr;gap:20px 12px}.hero-strip a{grid-column:1/-1}.hero-strip strong{font-size:17px}.eyebrow{letter-spacing:1px}.region{padding:20px 16px}.region strong{font-size:22px}.card-custom,.case-panel,.quote-panel{padding:24px}.article-item{grid-template-columns:1fr;gap:8px}.article-item h3{font-size:18px}.section-intro{margin-bottom:26px}.reminder-box{padding:22px}.footer-links{flex-wrap:wrap}.channel-link{padding:23px}.metrics{gap:25px 16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang page: category1 */
:root{--bg:#101717;--surface:#182222;--surface2:#202d2b;--ink:#f0f4ed;--muted:#a8b8b0;--line:#344440;--accent:#c5f66a;--teal:#8fdbce;--paper:#f1f3ea;--dark:#182923;--radius:20px;--shadow:0 18px 48px #0002}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:color .2s,background .2s,transform .2s}
a:hover{color:var(--accent)}
img,svg{max-width:100%;vertical-align:middle}
button,input{font:inherit}button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:5px}
.container{max-width:1260px;padding-left:28px;padding-right:28px}
h1,h2,h3{font-weight:750;line-height:1.35;letter-spacing:-.035em}
h1{font-size:clamp(34px,4.3vw,58px)}h2{font-size:clamp(26px,3vw,36px);margin-bottom:18px}h3{font-size:20px}
p{color:var(--muted)}::selection{background:var(--accent);color:var(--bg)}
.site-header{border-bottom:1px solid var(--line);background:#121b1a}
.brand-row{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-size:21px;letter-spacing:-.5px;font-weight:800;display:flex;align-items:center;gap:12px}
.brand-mark{display:grid;place-items:center;width:39px;height:39px;background:var(--accent);color:var(--bg);border-radius:11px;transform:rotate(-6deg);font-size:23px;flex-shrink:0}
.header-note{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:9px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.nav-grid{display:flex;gap:10px;padding-bottom:16px}
.nav-grid a{display:flex;align-items:center;gap:10px;font-size:14px;border:1px solid var(--line);border-radius:10px;padding:9px 20px;color:var(--muted)}
.nav-grid a:hover,.nav-grid a.active{background:var(--surface2);color:var(--ink);border-color:#7b9364}
.nav-grid a:active{transform:translateY(1px)}
.nav-icon{font-size:19px;color:var(--accent)}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:2px;color:var(--accent);margin-bottom:20px;display:block}
.badge-soft{display:inline-block;border:1px solid #71805e;background:#c5f66a10;color:var(--accent);border-radius:6px;font-size:12px;padding:4px 10px}
.btn{border-radius:9px;padding:12px 23px;font-size:14px;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
.btn-accent{background:var(--accent);color:#172318;border:1px solid var(--accent)}
.btn-accent:hover{background:#dafc9c;color:#172318;box-shadow:0 5px 24px #c5f66a20;transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-outline-custom{border:1px solid var(--line);color:var(--ink);background:transparent}
.btn-outline-custom:hover{border-color:var(--accent);color:var(--accent)}
.section{padding:76px 0;border-bottom:1px solid var(--line)}
.section-intro{max-width:760px;margin-bottom:34px}
.section-intro p{margin-bottom:0}
.section-top{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:32px}
.section-top .section-intro{margin-bottom:0}
.section-num{font-size:12px;color:var(--muted);white-space:nowrap;font-family:monospace}
.card-custom{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--surface);height:100%;transition:transform .2s,border-color .2s,box-shadow .2s}
.card-custom:hover{transform:translateY(-4px);border-color:#759567;box-shadow:var(--shadow)}
.card-custom p{font-size:14px;margin:0}
.card-icon{width:43px;height:43px;display:grid;place-items:center;border:1px solid var(--line);border-radius:12px;color:var(--accent);margin-bottom:24px;font-size:20px}
.light{background:var(--paper);color:var(--dark)}
.light p{color:#53645b}.light .eyebrow{color:#4b7028}
.light .card-custom{background:#fff;border-color:#d7ded3}
.feature-list{list-style:none;margin:0;padding:0}
.feature-list li{display:flex;gap:16px;padding:22px 0;border-bottom:1px solid #ced6c9}
.feature-list li:first-child{padding-top:0}.feature-list strong{display:block;margin-bottom:6px}
.feature-list p{font-size:14px;margin:0}
.case-tag{color:var(--teal);font-size:12px;margin-bottom:14px}
.article-item{display:grid;grid-template-columns:100px 1fr 26px;gap:25px;border-top:1px solid var(--line);padding:28px 0}
.article-item h3{font-size:20px;margin-bottom:10px}
.article-item p{font-size:14px;margin:0;max-width:840px}
.cta{background:#1c2c24}.cta-inner{display:grid;grid-template-columns:1fr .8fr;gap:60px;align-items:center}
.form-feedback{min-height:26px;font-size:13px;color:var(--teal);margin-top:13px}
.site-footer{padding:42px 0 24px}
.footer-main{display:flex;justify-content:space-between;gap:36px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.footer-main p{font-size:12px;max-width:520px;margin:14px 0 0}
.footer-links{display:flex;align-items:flex-start;gap:24px;font-size:13px;color:var(--muted)}
.copyright{font-size:11px;color:#83988a;margin-top:22px;display:flex;justify-content:space-between;gap:16px}
.hero{padding:56px 0 42px;border-bottom:1px solid var(--line);background:radial-gradient(ellipse at 90% 10%,#29433255,transparent 55%)}
.breadcrumb-line{font-size:12px;color:var(--muted);margin-bottom:30px}
.breadcrumb-line span{padding:0 10px;color:#61746b}
.hero-copy{max-width:790px}.hero-copy p{font-size:16px;max-width:740px;margin:22px 0 28px}
.hero h1 span{color:var(--accent)}
.hero-side{border-left:1px solid var(--line);padding:10px 0 10px 30px}
.hero-side strong{font-size:58px;line-height:1.1;font-weight:800;letter-spacing:-3px;display:block;color:var(--accent)}
.hero-side p{font-size:13px;margin:18px 0 0}
.roadmap{display:grid;grid-template-columns:repeat(4,1fr);margin-top:44px;border:1px solid var(--line);border-radius:16px;background:#14201d;overflow:hidden}
.road-node{padding:24px;border-right:1px solid var(--line)}
.road-node:last-child{border:0}.road-node small{display:block;color:var(--teal);font-size:11px;margin-bottom:10px}
.road-node strong{display:block;font-size:15px}.road-node p{font-size:12px;margin:6px 0 0}
.subscribe-line{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:24px}
.subscribe-line p{font-size:13px;margin:0}.subscribe-line .form-feedback{margin:4px 0 0;min-height:0}
.signal-box{border-radius:20px;background:var(--dark);padding:32px;color:var(--ink);height:100%;position:relative;overflow:hidden}
.signal-box p{color:var(--muted)}.signal-box strong{color:var(--accent)}
.signal-bars{height:90px;display:flex;align-items:flex-end;gap:10px;margin:22px 0}
.signal-bars span{width:100%;background:#90b86a;border-radius:4px 4px 0 0}.signal-bars span:nth-child(even){background:var(--teal)}
.method-row{display:grid;grid-template-columns:60px 220px 1fr;gap:24px;padding:28px 0;border-top:1px solid var(--line);align-items:start}
.method-row .step{color:var(--accent);font-family:monospace;font-size:24px}
.method-row h3{padding-top:5px}.method-row p{margin:0;font-size:14px}
.evidence{background:var(--surface)}.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.evidence-cell{background:var(--surface);padding:30px}
.evidence-cell strong{display:block;font-size:23px;margin-bottom:12px}
.evidence-cell p{font-size:14px;margin:0}.status{font-size:11px;color:var(--teal);display:inline-block;margin-bottom:20px}
.region-row{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.region-item{padding:28px;border-right:1px solid var(--line)}.region-item:last-child{border:0}
.region-item p{font-size:13px;margin:12px 0 0}.region-label{font-size:12px;color:var(--teal);margin-bottom:20px}
.note-band{border-left:3px solid var(--accent);padding:15px 24px;background:var(--surface);font-size:14px;color:var(--muted);margin-top:26px}
.metrics-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.metric{border:1px solid #cbd4c5;border-radius:14px;padding:24px}
.metric h3{font-size:17px}.metric p{font-size:13px;margin:0}
.accordion{--bs-accordion-bg:var(--surface);--bs-accordion-color:var(--muted);--bs-accordion-border-color:var(--line);--bs-accordion-btn-color:var(--ink);--bs-accordion-active-bg:var(--surface2);--bs-accordion-active-color:var(--accent);--bs-accordion-btn-focus-box-shadow:0 0 0 3px #8fdbce40}
.accordion-item{overflow:hidden}.accordion-button{font-size:15px;padding:22px;line-height:1.6}
.accordion-button:after{filter:grayscale(1) brightness(3)}.accordion-body{font-size:14px;padding:22px}
@media(min-width:1025px){.hero-side{margin-left:24px}}
@media(max-width:1024px){.container{padding-left:24px;padding-right:24px}.section{padding:60px 0}.region-row{grid-template-columns:repeat(2,1fr)}.region-item:nth-child(2){border-right:0}.region-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.road-node{padding:18px}.cta-inner{gap:30px}.footer-main{gap:24px}.footer-links{gap:16px}}
@media(max-width:768px){.header-note{display:none}.hero{padding-top:34px}.hero-side{display:none}.roadmap{grid-template-columns:repeat(2,1fr)}.road-node:nth-child(2){border-right:0}.road-node:nth-child(-n+2){border-bottom:1px solid var(--line)}.subscribe-line{align-items:flex-start}.method-row{grid-template-columns:40px 1fr;gap:14px}.method-row p{grid-column:2}.evidence-grid{grid-template-columns:1fr}.evidence-cell{padding:24px}.section-top{align-items:flex-start}.section-num{display:none}.cta-inner{grid-template-columns:1fr}.footer-main{flex-direction:column}.copyright{flex-direction:column;gap:5px}.article-item{grid-template-columns:75px 1fr;gap:16px}.article-item>span:last-child{display:none}}
@media(max-width:520px){.container{padding-left:16px;padding-right:16px}.brand-row{min-height:76px}.brand{font-size:18px}.nav-grid a{padding:9px 16px;flex:1;justify-content:center}.section{padding:46px 0}.hero h1{font-size:35px}.hero-copy p{font-size:14px}.road-node{padding:16px}.subscribe-line{flex-direction:column}.region-row,.metrics-list{grid-template-columns:1fr}.region-item{border-right:0;border-bottom:1px solid var(--line)}.card-custom{padding:24px}.article-item{grid-template-columns:1fr;gap:8px}.footer-links{flex-wrap:wrap;gap:12px 20px}.signal-box{padding:24px}.btn{padding:11px 18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}