/* roulang page: index */
:root{--blue:#3E6FB5;--blue-dark:#325b96;--amber:#D89A12;--amber-soft:#FBF3DE;--amber-ink:#6B4A0A;--bg:#F3F6FB;--card:#FFFFFF;--ink:#1B2430;--muted:#5C6A7A;--line:#E2E8F0;--footer:#243044;--shadow:0 10px 28px rgba(36,48,68,.08);--radius:16px;--pill:999px;--input:12px;--pad:80px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;padding-top:78px}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--blue);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.accordion-button:focus-visible{outline:2px solid var(--blue);outline-offset:2px;box-shadow:none}
.container{width:min(1140px,calc(100% - 32px));margin:0 auto}
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(27,36,48,.05)}
.navbar{padding:0}
.nav-bar{min-height:78px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;min-height:44px}
.logo:hover{text-decoration:none;color:inherit}
.logo-mark{width:36px;height:36px;border-radius:12px;background:var(--blue);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--amber);right:6px;top:6px}
.logo-text{font-weight:700;font-size:16px;line-height:1.25;color:var(--ink);white-space:nowrap}
.navbar-toggler{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;display:none;align-items:center;justify-content:center;padding:0}
.navbar-toggler-icon{width:18px;height:2px;background:var(--ink);position:relative;display:block}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.navbar-toggler-icon::before{top:-6px}
.navbar-toggler-icon::after{top:6px}
.navbar-collapse{display:flex;align-items:center;flex:1;gap:12px}
.navbar-nav{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto;padding:0}
.nav-link{display:flex;align-items:center;min-height:44px;padding:0 12px;color:var(--ink);font-weight:600;font-size:15px;border-radius:12px}
.nav-link:hover{color:var(--blue);text-decoration:none}
.nav-link.active{color:var(--blue);font-weight:700}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang{display:flex;gap:6px}
.lang-btn{min-height:44px;padding:0 12px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;font-weight:700}
.lang-btn.is-active{color:var(--blue);border-color:#c9d7ee;background:#f7f9fd}
.lang-btn:hover{border-color:var(--blue);color:var(--blue)}
.btn-main,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:var(--pill);font-weight:700;border:1px solid transparent;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;text-decoration:none}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(62,111,181,.22)}
.btn-main:hover{background:var(--blue-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 22px rgba(62,111,181,.28)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.block{padding:var(--pad) 0}
.block-white{background:#fff}
.block-plain{background:var(--bg)}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;font-weight:700;letter-spacing:.04em}
.dot{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(216,154,18,.16)}
h1,h2,h3{line-height:1.3;font-weight:700;margin:0 0 12px}
h1{font-size:40px;letter-spacing:-.02em}
h2{font-size:30px}
h3{font-size:18px}
.lead-one{font-size:18px;color:var(--ink);margin:0 0 12px}
.desc{color:var(--muted);margin:0 0 22px;max-width:760px}
.hl{color:var(--amber-ink);background:var(--amber-soft);border-radius:6px;padding:0 .28em;font-style:normal;font-weight:700}
.num{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.console{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px}
.console-head{display:flex;justify-content:space-between;gap:12px;align-items:center;padding-bottom:16px;margin-bottom:18px;border-bottom:1px solid var(--line)}
.console-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px 14px 12px;min-height:124px}
.metric b{display:block;font-size:28px;color:var(--blue);line-height:1.1;margin:4px 0}
.metric span{color:var(--muted);font-size:13px;font-weight:700}
.metric p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.55}
.matrix{display:grid;grid-template-columns:1.45fr .75fr;gap:16px}
.matrix-main{display:grid;gap:16px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.panel-side{background:#f8fbff}
.panel ul{margin:0;padding-left:18px;color:var(--muted)}
.panel li+li{margin-top:8px}
.rail{display:flex;gap:12px;overflow-x:auto;padding-bottom:4px}
.chip{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;min-width:min(100%,420px);padding:10px 14px 10px 18px;border-radius:var(--pill);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);color:var(--ink);font-weight:700}
.chip:hover{border-color:var(--blue);text-decoration:none;color:var(--ink)}
.tag{background:var(--amber-soft);color:var(--amber-ink);border-radius:var(--pill);padding:4px 10px;font-size:12px;font-weight:700;white-space:nowrap}
.spec-list{display:grid;gap:14px}
.spec-row{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.meter{height:8px;background:#e7eef8;border-radius:var(--pill);overflow:hidden}
.meter i{display:block;height:100%;background:var(--blue);border-radius:inherit}
.spec-row p{margin:4px 0 0;color:var(--muted);font-size:14px}
.versus{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.vs-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.vs-card-alt{background:#f8fbff}
.vs-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line);color:var(--muted)}
.vs-row strong{color:var(--ink);font-weight:700}
.axis{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:0;padding:18px 0 0;position:relative}
.axis::before{content:"";position:absolute;left:0;right:0;top:24px;height:2px;background:var(--line)}
.axis li{position:relative;padding-top:28px}
.node{position:absolute;top:0;left:0;width:14px;height:14px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px #fff,0 0 0 6px #c5d4ee}
.axis li.is-now .node{background:var(--amber);box-shadow:0 0 0 4px #fff,0 0 0 6px #f3e2bc}
.axis time{display:block;color:var(--blue);font-weight:700;font-size:13px}
.axis p{margin:6px 0 0;color:var(--muted);font-size:14px}
.news-list{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
.news-main,.news-sub{display:grid;gap:12px}
.news-card{display:grid;grid-template-columns:168px 1fr;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;color:inherit}
.news-card:hover{text-decoration:none;border-color:#c9d7ee}
.news-sub .news-card{grid-template-columns:1fr}
.thumb{position:relative;aspect-ratio:16/9;border-radius:12px;background:#d9e4f5;overflow:hidden}
.thumb::after{content:"";position:absolute;left:14px;bottom:12px;width:36px;height:4px;border-radius:var(--pill);background:rgba(62,111,181,.45)}
.dur,.badge-spec{position:absolute;top:8px;right:8px;background:var(--amber-soft);color:var(--amber-ink);border-radius:var(--pill);font-size:12px;font-weight:700;padding:3px 8px}
.badge-spec{position:static}
.meta-line{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:4px}
.news-card p,.pick p,.topic a,.batch p{color:var(--muted);font-size:14px;margin:6px 0 0}
.wall{display:grid;grid-template-columns:1.35fr .85fr;gap:16px}
.wall-side{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pick{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;color:inherit;display:flex;flex-direction:column}
.pick:hover{text-decoration:none;border-color:#c9d7ee}
.pick h3{font-size:16px;margin-top:10px}
.assure{display:grid;gap:10px}
.assure a,.assure article{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);color:inherit}
.assure a:hover{text-decoration:none;border-color:#c9d7ee}
.ico{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--blue)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;counter-reset:step}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;min-height:180px;color:inherit}
.step:hover{text-decoration:none;border-color:#c9d7ee}
.step::before{counter-increment:step;content:counter(step);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:#e7eef8;color:var(--blue);font-weight:700;margin-bottom:10px}
.qa{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.qa article{padding:18px 20px;border-top:1px solid var(--line)}
.qa article:first-child{border-top:0}
.qa p{margin:0;color:var(--muted)}
.accordion{--bs-accordion-border-color:var(--line);--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:#fff;--bs-accordion-active-color:var(--ink);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.accordion-item{border:0;border-top:1px solid var(--line);background:#fff}
.accordion-item:first-of-type{border-top:0}
.accordion-button{min-height:56px;font-weight:700;color:var(--ink);background:#fff;box-shadow:none}
.accordion-button:not(.collapsed){color:var(--blue);background:#fff}
.accordion-body{color:var(--muted);padding-top:0}
.batches{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.batch{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;color:inherit;min-height:148px}
.batch:hover{text-decoration:none;border-color:#c9d7ee}
.batch strong{display:block;color:var(--blue)}
.topics{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.topic{display:block;padding:16px 18px;border-top:1px solid var(--line);color:inherit}
.topic:first-child{border-top:0}
.topic:hover{text-decoration:none;background:#f8fbff}
.topic b{display:block}
.form-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;font-weight:700}
.field.full{grid-column:1/-1}
.field input,.field textarea{min-height:48px;border:1px solid var(--line);border-radius:var(--input);padding:10px 12px;color:var(--ink);background:#fff}
.field textarea{min-height:120px;resize:vertical}
.field input.is-error,.field textarea.is-error{border-color:#c4514a}
.err{color:#a33b36;font-size:13px;font-weight:600;min-height:1em}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:600}
.check input{width:18px;height:18px;margin-top:4px;accent-color:var(--blue)}
.ok-box{border:1px solid #c9d7ee;background:#f7f9fd;border-radius:var(--radius);padding:18px}
.site-footer{background:var(--footer);color:#d5ddea;padding:36px 0 28px}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.site-footer a{color:#fff;font-weight:700}
.site-footer p{margin:8px 0 0;color:#b7c2d2;font-size:14px}
@media(max-width:1199.98px){h1{font-size:34px}}
@media(max-width:991.98px){
.navbar-toggler{display:inline-flex;margin-left:auto}
.navbar-collapse{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(27,36,48,.08);padding:8px 16px 16px;flex-direction:column;align-items:stretch}
.navbar-collapse.show{display:flex}
.navbar-nav{flex-direction:column;align-items:stretch;margin:0}
.nav-link{padding:0 8px}
.nav-tools{flex-direction:column;align-items:stretch;margin:8px 0 0}
.lang{width:100%}
.lang-btn,.btn-main{width:100%}
.logo-text{white-space:normal;max-width:8.5em}
.console-grid,.matrix,.versus,.news-list,.wall,.steps,.batches,.form-grid{grid-template-columns:1fr}
.wall-side{grid-template-columns:1fr 1fr}
.axis{grid-template-columns:1fr;padding-left:8px}
.axis::before{left:14px;right:auto;top:0;bottom:0;width:2px;height:auto}
.axis li{padding:0 0 18px 28px}
.node{top:4px}
}
@media(max-width:767.98px){
:root{--pad:44px}
body{padding-top:72px}
h1{font-size:30px}
h2{font-size:24px}
.metric-grid,.wall-side,.news-card{grid-template-columns:1fr}
.spec-row{grid-template-columns:1fr}
.footer-row{flex-direction:column}
}
@media(max-width:575.98px){
.container{width:min(1140px,calc(100% - 24px))}
.console,.form-card{padding:16px}
.chip{min-width:100%;border-radius:16px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}

/* roulang page: category2 */
:root{--blue:#3E6FB5;--blue-dark:#325b96;--amber:#D89A12;--amber-soft:#FBF3DE;--amber-ink:#6B4A0A;--bg:#F3F6FB;--card:#FFFFFF;--ink:#1B2430;--muted:#5C6A7A;--line:#E2E8F0;--footer:#243044;--shadow:0 10px 28px rgba(36,48,68,.08);--radius:16px;--pill:999px;--input:12px;--pad:80px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;padding-top:78px}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--blue);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:2px solid var(--blue);outline-offset:2px;box-shadow:none}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{line-height:1.3;font-weight:700}
p{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
[hidden]{display:none !important}
.container{width:min(1140px,calc(100% - 32px));margin:0 auto}
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(27,36,48,.05)}
.navbar{padding:0}
.nav-bar{min-height:78px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;min-height:44px}
.logo:hover{text-decoration:none;color:inherit}
.logo-mark{width:36px;height:36px;border-radius:12px;background:var(--blue);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--amber);right:6px;top:6px}
.logo-text{font-weight:700;font-size:16px;line-height:1.25;color:var(--ink);white-space:nowrap}
.navbar-toggler{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;display:none;align-items:center;justify-content:center;padding:0}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler-icon{width:18px;height:2px;background:var(--ink);position:relative;display:block}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.navbar-toggler-icon::before{top:-6px}
.navbar-toggler-icon::after{top:6px}
.navbar-nav{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto;padding:0}
.nav-link{display:flex;align-items:center;min-height:44px;padding:0 12px;color:var(--ink);font-weight:600;font-size:15px;border-radius:12px}
.nav-link:hover{color:var(--blue);text-decoration:none}
.nav-link.active{color:var(--blue);font-weight:700}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang{display:inline-flex;align-items:center}
.lang-btn{min-height:44px;padding:0 12px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;font-weight:700}
.lang-btn.is-active{color:var(--blue);border-color:#c9d7ee;background:#f7f9fd}
.lang-btn:hover{border-color:var(--blue);color:var(--blue)}
.btn-main,.btn-ghost,.more{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:var(--pill);font-weight:700;border:1px solid transparent;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;text-decoration:none;cursor:pointer}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(62,111,181,.22)}
.btn-main:hover{background:var(--blue-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 22px rgba(62,111,181,.28)}
.btn-main:active{transform:translateY(0)}
.btn-ghost,.more{background:#fff;color:var(--ink);border-color:var(--line);min-height:44px;padding:0 16px;font-size:14px}
.btn-ghost:hover,.more:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.lead-one{font-size:18px;color:var(--ink);margin:0}
.tag,.badge-spec,.dur,.frame-mark{background:var(--amber-soft);color:var(--amber-ink);border-radius:var(--pill);padding:4px 10px;font-size:12px;font-weight:700;white-space:nowrap}
.dur,.frame-mark{position:absolute;top:10px}
.dur{right:10px}
.frame-mark{left:10px}
.num{font-variant-numeric:tabular-nums;font-family:ui-monospace,"SFMono-Regular","Cascadia Mono","Microsoft YaHei",monospace;font-weight:700;color:var(--blue);letter-spacing:-.03em}
.band{padding:80px 0;background:var(--bg)}
.band-white{background:#fff}
.band h2{font-size:30px;margin-bottom:8px}
.subline{color:var(--muted);max-width:640px}
.head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;font-weight:700;margin-bottom:12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px var(--amber-soft);display:inline-block}
.head-grid h1{font-size:40px;margin-bottom:12px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;min-height:108px;display:flex;flex-direction:column;justify-content:center}
.stat-grid .num{font-size:30px;line-height:1.1}
.stat-grid span:last-child{color:var(--muted);font-size:14px}
.group-block{margin-top:28px}
.group-block:first-of-type{margin-top:22px}
.group-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:14px}
.group-head h3{font-size:20px;margin-bottom:4px}
.group-head p{color:var(--muted);font-size:14px}
.rail{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 12px;-webkit-overflow-scrolling:touch}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-thumb{background:#d5deea;border-radius:999px}
.rail-card{flex:0 0 280px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;color:inherit;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.rail-card:hover{text-decoration:none;color:inherit;transform:translateY(-2px);border-color:#c9d7ee;box-shadow:0 14px 30px rgba(36,48,68,.12)}
.frame{position:relative;aspect-ratio:16/9;border-radius:12px;background:#e7eef8;margin-bottom:12px;overflow:hidden}
.frame::before{content:"";position:absolute;left:16px;right:16px;bottom:16px;height:8px;border-radius:999px;background:rgba(62,111,181,.18)}
.frame::after{content:"";position:absolute;width:42%;height:8px;left:16px;bottom:32px;border-radius:999px;background:rgba(216,154,18,.45)}
.rail-card h3{font-size:17px;margin-bottom:4px}
.rail-card p{color:var(--muted);font-size:14px}
.theme-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.theme-tag{min-height:44px;padding:0 16px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:700;cursor:pointer}
.theme-tag:hover{border-color:var(--blue);color:var(--blue)}
.theme-tag.is-on{color:var(--blue);border-color:#c9d7ee;background:#f7f9fd;box-shadow:inset 0 -2px 0 var(--amber)}
.theme-note{margin-top:16px;color:var(--muted);max-width:760px}
.mark-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.dist-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:32px;align-items:center}
.dist-list{display:grid;gap:14px}
.dist-top{display:flex;justify-content:space-between;gap:12px;font-weight:700;margin-bottom:6px}
.dist-top span{color:var(--ink)}
.dist-track{height:10px;background:#e7eef8;border-radius:999px;overflow:hidden}
.dist-track i{display:block;height:100%;background:var(--blue);border-radius:999px}
.dist-list article:nth-child(2) .dist-track i{background:#6e93cc}
.dist-list article:nth-child(4) .dist-track i{background:var(--amber)}
.quality-grid{display:grid;grid-template-columns:1.45fr 1fr .78fr;gap:16px;margin-top:22px}
.q-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.q-card .num{font-size:28px;display:block;margin-bottom:8px}
.q-card p{color:var(--muted);margin-top:8px}
.q-card-wide{background:#f8fbff}
.note-list{display:grid;gap:12px;margin-top:18px}
.note-list a{display:grid;grid-template-columns:132px 1fr auto;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;color:inherit;min-height:84px}
.note-list a:hover{text-decoration:none;border-color:#c9d7ee}
.note-list time{color:var(--blue);font-weight:700;font-variant-numeric:tabular-nums}
.note-list p{color:var(--muted);font-size:14px;margin-top:4px}
.fold-list{display:grid;gap:10px;margin-top:18px}
.fold{background:#fff;border:1px solid var(--line);border-left:3px solid var(--amber);border-radius:12px;box-shadow:var(--shadow);padding:0 18px}
.fold summary{min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;font-weight:700;list-style:none}
.fold summary::-webkit-details-marker{display:none}
.fold summary::after{content:"";width:8px;height:8px;border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);transform:rotate(45deg);flex:0 0 auto}
.fold[open] summary::after{transform:rotate(-135deg);margin-top:4px}
.fold p{color:var(--muted);padding:0 0 16px}
.action-band .action-inner{background:#eef3fb;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.action-inner h2{font-size:26px;margin-bottom:6px}
.action-inner p{color:var(--muted)}
.site-footer{background:var(--footer);color:#d5deea;padding:32px 0}
.site-footer a{color:#fff;font-weight:700}
.site-footer a:hover{color:#fff;text-decoration-color:var(--amber)}
.site-footer p{margin:6px 0 0;color:#b7c3d4;font-size:14px}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
@media (max-width:1199.98px){
.quality-grid{grid-template-columns:1.3fr 1fr .9fr}
}
@media (max-width:991.98px){
body{padding-top:70px}
.nav-bar{flex-wrap:wrap;min-height:70px;padding:10px 0}
.navbar-toggler{display:inline-flex;margin-left:auto}
.navbar-collapse{flex-basis:100%;width:100%;padding:4px 0 12px}
.navbar-collapse.show{display:flex;flex-direction:column;align-items:stretch;gap:8px}
.navbar-nav{flex-direction:column;align-items:stretch;margin:0}
.nav-link{padding:0 8px}
.nav-tools{margin-left:0;flex-wrap:wrap}
.head-grid,.dist-layout{grid-template-columns:1fr;gap:22px}
.head-grid h1{font-size:32px}
.quality-grid{grid-template-columns:1fr 1fr}
.q-card:last-child{grid-column:1 / -1}
.note-list a{grid-template-columns:1fr;gap:6px}
.band{padding:56px 0}
}
@media (max-width:767.98px){
.band{padding:44px 0}
.band h2,.action-inner h2{font-size:24px}
.head-grid h1{font-size:28px}
.lead-one{font-size:16px}
.stat-grid{grid-template-columns:1fr 1fr}
.group-head,.action-inner,.footer-row{flex-direction:column;align-items:flex-start}
.quality-grid{grid-template-columns:1fr}
.q-card:last-child{grid-column:auto}
.rail-card{flex-basis:240px}
}
@media (max-width:575.98px){
.logo-text{white-space:normal;font-size:13px;max-width:46vw}
.container{width:min(1140px,calc(100% - 24px))}
.stat-grid{grid-template-columns:1fr}
.action-inner{padding:22px}
}

/* roulang page: category1 */
:root{--blue:#3E6FB5;--blue-dark:#325b96;--amber:#D89A12;--amber-soft:#FBF3DE;--amber-ink:#6B4A0A;--bg:#F3F6FB;--card:#FFFFFF;--ink:#1B2430;--muted:#5C6A7A;--line:#E2E8F0;--footer:#243044;--shadow:0 10px 28px rgba(36,48,68,.08);--radius:16px;--pill:999px;--input:12px;--pad:80px}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;padding-top:78px}
img{max-width:100%;display:block}
button,input,textarea{font-family:inherit}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--blue);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.accordion-button:focus-visible{outline:2px solid var(--blue);outline-offset:2px;box-shadow:none}
.container{width:min(1140px,calc(100% - 32px));margin:0 auto}
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 24px rgba(27,36,48,.05)}
.navbar{padding:0}
.nav-bar{min-height:78px;display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;min-height:44px;max-width:calc(100% - 60px)}
.logo:hover{text-decoration:none;color:inherit}
.logo-mark{width:36px;height:36px;border-radius:12px;background:var(--blue);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--amber);right:6px;top:6px}
.logo-text{font-weight:700;font-size:16px;line-height:1.25;color:var(--ink);white-space:nowrap}
.navbar-toggler{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;display:none;align-items:center;justify-content:center;padding:0;box-shadow:none}
.navbar-toggler:focus{box-shadow:none}
.navbar-toggler-icon{width:18px;height:2px;background:var(--ink);position:relative;display:block;background-image:none}
.navbar-toggler-icon::before,.navbar-toggler-icon::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.navbar-toggler-icon::before{top:-6px}
.navbar-toggler-icon::after{top:6px}
.navbar-collapse{display:flex;align-items:center;flex:1;gap:12px}
.navbar-nav{display:flex;align-items:center;gap:4px;list-style:none;margin:0 auto;padding:0}
.navbar-nav .nav-link{display:flex;align-items:center;min-height:44px;padding:0 12px;color:var(--ink);font-weight:600;font-size:15px;border-radius:12px}
.navbar-nav .nav-link:hover{color:var(--blue);text-decoration:none}
.navbar-nav .nav-link.active{color:var(--blue);font-weight:700;background:transparent}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.lang{display:flex;align-items:center;gap:6px}
.lang-btn{min-height:44px;padding:0 12px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px;font-weight:700}
.lang-btn.is-active{color:var(--blue);border-color:#c9d7ee;background:#f7f9fd}
.lang-btn:hover{border-color:var(--blue);color:var(--blue)}
.btn-main,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:var(--pill);font-weight:700;border:1px solid transparent;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;text-decoration:none;cursor:pointer}
.btn-main{background:var(--blue);color:#fff;box-shadow:0 8px 18px rgba(62,111,181,.22)}
.btn-main:hover{background:var(--blue-dark);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 22px rgba(62,111,181,.28)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.tag,.badge-spec{background:var(--amber-soft);color:var(--amber-ink);border-radius:var(--pill);padding:4px 10px;font-size:12px;font-weight:700;white-space:nowrap;display:inline-flex;align-items:center}
.dur,.badge-spec{position:absolute;top:8px;right:8px}
.badge-spec{position:static}
.meta-line{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:4px;flex-wrap:wrap}
.num{font-variant-numeric:tabular-nums;font-family:ui-monospace,"SFMono-Regular",Consolas,monospace;font-weight:700;letter-spacing:0}
h1,h2,h3{font-weight:700;line-height:1.3;letter-spacing:0}
h1{font-size:clamp(30px,4vw,44px);margin:8px 0 12px}
h2{font-size:clamp(24px,3vw,32px);margin:0 0 16px}
h3{font-size:20px;margin:0}
p{margin:0}
.section-lead{color:var(--muted);margin:0 0 20px;max-width:42em}
main section{padding:var(--pad) 0}
.page-head{background:#fff}
.list-block{background:var(--bg)}
.spec-block{background:#fff}
.len-block{background:var(--bg)}
.news-block{background:#fff}
.order-block{background:var(--bg)}
.qa-block{background:#fff}
.demand-block{background:var(--bg)}
.head-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center}
.kicker{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px;font-weight:700;margin:0}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--amber);flex:0 0 auto}
.head-copy p{color:var(--ink);font-size:17px}
.filter-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
.filter-chip{min-height:44px;padding:0 16px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:700;font-size:14px;cursor:pointer;transition:border-color .18s ease,background .18s ease,color .18s ease}
.filter-chip:hover{border-color:var(--blue);color:var(--blue)}
.filter-chip.is-on{background:var(--amber-soft);color:var(--amber-ink);border-color:#efd7a2}
.list-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:16px}
.list-count{color:var(--muted);font-size:14px;margin:0 0 16px}
.entry-list{display:grid;gap:12px}
.entry{display:grid;grid-template-columns:240px 1fr;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:12px;transition:border-color .18s ease,transform .18s ease}
.entry:hover{border-color:#c9d7ee;transform:translateY(-1px)}
.entry[hidden]{display:none}
.entry-media{position:relative;display:block;aspect-ratio:16/9;background:#d5e2f4;border-radius:12px;overflow:hidden}
.entry-media::before{content:"";position:absolute;left:10px;top:10px;width:10px;height:10px;border-radius:50%;background:var(--amber)}
.entry-media:hover{text-decoration:none}
.entry-body{display:flex;flex-direction:column;justify-content:center;min-width:0;padding:4px 6px 4px 0}
.entry-body p{color:var(--muted);font-size:14px;margin-top:6px}
.entry-body h3 a{color:var(--ink)}
.more-row{display:flex;justify-content:flex-start;margin-top:16px}
.spec-list{display:grid;gap:14px}
.spec-row{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.spec-block .spec-row{background:#f8fbff}
.spec-key{font-weight:700;color:var(--blue);font-size:18px}
.spec-row p{margin:4px 0 0;color:var(--muted);font-size:14px}
.len-board{display:grid;grid-template-columns:.8fr 1fr 1.25fr;gap:14px}
.len-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.len-card header{display:flex;justify-content:space-between;gap:10px;align-items:baseline;margin-bottom:12px}
.len-card p{color:var(--muted);font-size:14px;margin-top:10px}
.bar{height:8px;background:#e7edf5;border-radius:var(--pill);overflow:hidden}
.bar span{display:block;height:100%;background:var(--blue);border-radius:inherit}
.update-list{display:grid;gap:10px}
.update-item{display:grid;grid-template-columns:120px 1fr auto;gap:12px;align-items:center;background:#f8fbff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;color:inherit;box-shadow:var(--shadow)}
.update-item:hover{text-decoration:none;border-color:#c9d7ee;color:var(--ink)}
.update-item time{color:var(--blue);font-weight:700}
.update-item p{color:var(--muted);font-size:14px;margin-top:2px}
.order-line{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.order-step{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;min-height:148px;color:inherit}
.order-step:hover{text-decoration:none;border-color:#c9d7ee;color:inherit}
.order-no{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:28px;padding:0 8px;border-radius:var(--pill);background:var(--amber-soft);color:var(--amber-ink);font-size:12px;font-weight:700;margin-bottom:10px}
.order-step strong{display:block;margin-bottom:6px}
.order-step span{display:block;color:var(--muted);font-size:14px;font-weight:400}
.qa{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.qa article{padding:18px 20px;border-top:1px solid var(--line)}
.qa article:first-child{border-top:0}
.qa h3{font-size:17px;margin-bottom:6px}
.qa p{margin:0;color:var(--muted)}
.demand{display:flex;justify-content:space-between;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px}
.demand p{color:var(--muted);margin-top:6px}
.site-footer{background:var(--footer);color:#d5dde8;padding:28px 0}
.site-footer a{color:#fff;font-weight:700}
.site-footer a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--amber)}
.footer-row{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
.site-footer p{margin:8px 0 0;color:#b7c2d0;font-size:14px}
.accordion-item{border:0;border-top:1px solid var(--line);background:#fff}
.accordion-item:first-of-type{border-top:0}
.accordion-button{min-height:56px;font-weight:700;color:var(--ink);background:#fff;box-shadow:none}
.accordion-button:not(.collapsed){color:var(--blue);background:#f7f9fd}
@media (min-width:992px){
  .navbar-collapse.collapse{display:flex !important;height:auto !important;visibility:visible}
}
@media (max-width:1199.98px){
  .logo-text{font-size:15px}
}
@media (max-width:991.98px){
  .navbar-toggler{display:inline-flex;margin-left:auto}
  .nav-bar{flex-wrap:wrap}
  .navbar-collapse.collapse:not(.show){display:none !important}
  .navbar-collapse.collapse.show,.navbar-collapse.collapsing{display:flex !important;flex-direction:column;align-items:stretch;width:100%;gap:8px;padding:0 0 16px}
  .navbar-nav{flex-direction:column;align-items:stretch;margin:0;width:100%}
  .nav-tools{flex-direction:column;align-items:stretch;width:100%;margin-left:0}
  .lang{width:100%}
  .lang-btn,.btn-main{flex:1}
  .head-grid,.entry,.len-board,.order-line{grid-template-columns:1fr}
  .filter-row{justify-content:flex-start}
  .update-item{grid-template-columns:1fr;gap:4px}
}
@media (max-width:767.98px){
  :root{--pad:44px}
  body{padding-top:72px}
  .logo-text{white-space:normal;font-size:14px;max-width:9.2em}
  .list-head,.demand,.footer-row{flex-direction:column;align-items:flex-start}
  .demand .btn-main,.more-row .btn-ghost{width:100%}
  .entry{grid-template-columns:1fr}
  .spec-row{grid-template-columns:72px 1fr}
}
@media (max-width:575.98px){
  .container{width:min(1140px,calc(100% - 24px))}
  h1{font-size:28px}
  .len-card header{flex-direction:column;align-items:flex-start}
}

/* 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}