/* roulang page: index */
:root{
  --brand:#2C6E5D;--brand-deep:#245A4C;--brand-ink:#1A3D34;
  --accent:#D9B48F;--accent-deep:#C49A70;--tint:#E7F1EC;
  --bg:#F5F7F4;--paper:#FBFCF9;--ink:#1C2B26;--text:#24312C;--muted:#5C6B64;
  --line:rgba(44,110,93,.12);--line-strong:rgba(44,110,93,.22);
  --shadow:0 8px 24px rgba(28,43,38,.06);--shadow-hover:0 14px 32px rgba(28,43,38,.12);
  --radius:12px;--radius-sm:8px;--header:132px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --space:24px;--max:1220px;
}
*,*:before,*:after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{font-family:var(--font-sans);font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease,opacity .2s ease}
a:hover{color:var(--brand-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
p{margin:0 0 1em}
h1,h2,h3,h4{font-family:var(--font-serif);color:var(--ink);line-height:1.35;margin:0 0 .55em;font-weight:700}
h1{font-size:38px}
h2{font-size:26px}
h3{font-size:19px}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.muted{color:var(--muted)}
.lead{font-size:16px;color:var(--text);max-width:720px;margin-bottom:1.15em}
.section{padding:76px 0;position:relative}
.section-tint{background:var(--tint)}
.section-paper{background:var(--paper)}
.section-head{margin-bottom:28px}
.section-head h2{margin-bottom:.4em}
.kicker{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--brand);font-weight:600;margin-bottom:10px;font-family:var(--font-sans)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 22px}
.chip{display:inline-flex;align-items:center;min-height:32px;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(217,180,143,.45);color:#F7F3EA;font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 22px;border-radius:8px;font-weight:600;line-height:1.2;border:1px solid transparent;transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease,opacity .2s ease}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(44,110,93,.22)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-line{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-line:hover{background:var(--tint);color:var(--brand-deep);transform:translateY(-2px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text);box-shadow:var(--shadow)}
.badge i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
.site-header{position:sticky;top:0;z-index:80;background:rgba(245,247,244,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease}
.site-header.is-compact{box-shadow:var(--shadow);background:rgba(251,252,249,.96)}
.header-inner{display:flex;flex-direction:column}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;padding:8px 24px 4px;max-width:var(--max);margin:0 auto;width:100%}
.logo{display:flex;align-items:center;gap:10px;color:var(--ink);font-family:var(--font-serif);font-weight:700;font-size:20px;min-height:44px}
.logo:hover{color:var(--brand)}
.logo-mark{width:36px;height:36px;flex:0 0 36px}
.nav-top-right{display:flex;align-items:center;gap:16px}
.nav-phone{display:flex;flex-direction:column;line-height:1.25;color:var(--ink);min-height:44px;justify-content:center}
.nav-phone strong{font-size:16px;letter-spacing:.02em}
.nav-phone span{font-size:12px;color:var(--muted)}
.hours-tag{font-size:12px;color:var(--brand-ink);background:var(--tint);border:1px solid var(--line);border-radius:999px;padding:6px 10px;white-space:nowrap}
.icon-btn,.menu-toggle,.phone-fab{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:8px;border:1px solid var(--line);color:var(--ink);background:#fff}
.nav-bottom{border-top:1px solid var(--line)}
.nav-bottom .nav-wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.nav-bottom ul{display:flex;align-items:center;gap:6px;min-height:48px;overflow-x:auto}
.nav-bottom a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:8px 12px;color:var(--muted);font-size:14px;font-weight:500;white-space:nowrap}
.nav-bottom a:hover{color:var(--brand)}
.nav-bottom a.active{color:var(--brand)}
.nav-bottom a.active:after{content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;background:var(--brand);border-radius:2px}
.site-header.is-compact .header-inner{flex-direction:row;align-items:center;max-width:var(--max);margin:0 auto;padding:0 8px 0 0}
.site-header.is-compact .nav-top{min-height:58px;padding:4px 16px 4px 24px;flex:0 0 auto}
.site-header.is-compact .hours-tag,.site-header.is-compact .nav-phone span{display:none}
.site-header.is-compact .nav-bottom{border-top:0;flex:1}
.site-header.is-compact .nav-bottom ul{min-height:58px;justify-content:flex-end}
.drawer{position:fixed;inset:0;background:rgba(28,43,38,.46);z-index:90;opacity:0;pointer-events:none;transition:opacity .2s ease}
.drawer.is-open{opacity:1;pointer-events:auto}
.drawer-panel{position:absolute;top:0;right:0;width:min(88vw,360px);height:100%;background:var(--paper);padding:24px 20px;overflow:auto;transform:translateX(24px);transition:transform .2s ease}
.drawer.is-open .drawer-panel{transform:none}
.drawer-panel a{display:flex;align-items:center;min-height:48px;padding:10px 8px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px}
.hero{position:relative;min-height:620px;height:calc(100vh - 120px);max-height:760px;overflow:hidden;background:#1C2B26}
.carousel{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .6s ease}
.slide.is-active{opacity:1;visibility:visible;z-index:1}
.slide img{width:100%;height:100%;object-fit:cover}
.slide-mask{position:absolute;inset:0;background:
  radial-gradient(900px 420px at 18% 88%, rgba(217,180,143,.2), transparent 58%),
  linear-gradient(105deg, rgba(28,43,38,.84) 0%, rgba(44,110,93,.46) 52%, rgba(28,43,38,.38) 100%)}
.slide-content{position:relative;z-index:2;height:100%;display:flex;align-items:center;padding:48px 0}
.hero-copy{max-width:680px;color:#F4F7F5}
.hero-copy h1,.hero-copy .hero-title{color:#fff;font-family:var(--font-serif);font-size:38px;line-height:1.28;margin:0 0 14px;font-weight:700}
.hero-copy .hero-lead{color:#E7EEEA;margin-bottom:8px}
.carousel-nav{position:absolute;z-index:3;inset:auto 24px 24px auto;display:flex;gap:8px}
.carousel-btn{width:44px;height:44px;border-radius:50%;border:1px solid rgba(255,255,255,.35);background:rgba(28,43,38,.35);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.carousel-btn:hover{background:rgba(44,110,93,.8)}
.carousel-dots{position:absolute;z-index:3;left:50%;bottom:22px;transform:translateX(-50%);display:flex;gap:8px}
.carousel-dots button{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.38);min-width:44px;min-height:44px;background:transparent;position:relative}
.carousel-dots button:after{content:"";position:absolute;left:50%;top:50%;width:10px;height:10px;margin:-5px 0 0 -5px;border-radius:50%;background:rgba(255,255,255,.4)}
.carousel-dots button.is-active:after{background:var(--accent);width:18px;border-radius:8px;margin-left:-9px}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.intro-visual{position:relative}
.intro-visual img{width:100%;height:460px;object-fit:cover;border-radius:14px;box-shadow:var(--shadow)}
.intro-visual:after{content:"";position:absolute;left:-18px;bottom:-18px;width:46%;height:46%;border:1px solid var(--line-strong);border-radius:14px;z-index:-1}
.data-note{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 8px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:16px}
.bento a,.bento article{display:block;border-radius:14px;overflow:hidden;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);color:inherit;min-height:160px;position:relative;transition:transform .2s ease,box-shadow .2s ease}
.bento a:hover,.card:hover,.product-card:after,.product-card:hover,.case-card:hover,.news-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:inherit}
.bento-lg{grid-column:span 7;min-height:280px}
.bento-lg + .bento-lg{grid-column:span 5}
.bento-sm{grid-column:span 3;min-height:170px}
.bento-media{position:absolute;inset:0}
.bento-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.85)}
.bento-media:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(28,43,38,.1),rgba(28,43,38,.72))}
.bento-body{position:relative;z-index:1;padding:22px;height:100%;display:flex;flex-direction:column;justify-content:flex-end;color:#fff}
.bento-sm .bento-body{color:var(--ink);background:linear-gradient(180deg,#fff, #f3f8f5)}
.bento-sm h3{color:var(--ink)}
.bento p,.card p,.product-card p,.scene-card p,.adv p,.case-card p,.story p,.review p,.news-item p,.faq-item p,.guard p{margin:0}
.scene-track{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:var(--shadow);min-height:180px;transition:transform .2s ease,box-shadow .2s ease}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scene-no{font-family:var(--font-serif);color:var(--accent-deep);font-size:22px;display:block;margin-bottom:8px}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;min-height:190px}
.icon-line{width:36px;height:36px;margin-bottom:12px;color:var(--brand)}
.product-grid{display:grid;grid-template-columns:1.25fr .875fr .875fr;gap:16px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease}
.product-card img{width:100%;height:210px;object-fit:cover}
.product-card .pad{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.meta-list{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:13px}
.meta-list span{background:var(--tint);border-radius:999px;padding:3px 10px;color:var(--brand-ink)}
.stats{background:linear-gradient(90deg,#2C6E5D,#1C2B26);color:#fff;padding:42px 0}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;text-align:left}
.stat-num{font-family:var(--font-serif);font-size:36px;line-height:1.1;color:#F7F3EA}
.stat-num em{font-style:normal;color:var(--accent);font-size:18px;margin-left:4px}
.stat-label{margin-top:8px;font-size:13px;color:#D5E4DE}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative}
.timeline:before{content:"";position:absolute;left:8%;right:8%;top:23px;height:1px;background:var(--line-strong)}
.step{padding:0 12px 8px;position:relative}
.step-no{width:46px;height:46px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);position:relative;z-index:1;margin-bottom:12px}
.dark{background:#1C2B26;color:#E7EEEA;padding:76px 0}
.dark h2,.dark h3{color:#fff}
.dark-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:stretch}
.case-wall{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.case-card{display:block;position:relative;min-height:180px;border-radius:8px;overflow:hidden;color:#fff}
.case-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.case-card span,.case-card strong,.case-card b{position:relative;z-index:1}
.case-card .cap{position:absolute;inset:auto 0 0;padding:16px;background:linear-gradient(180deg,transparent,rgba(28,43,38,.82))}
.story{display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;align-items:center;margin-bottom:36px}
.story.reverse{grid-template-columns:1.1fr .9fr}
.story.reverse .story-text{order:-1}
.story img{width:100%;height:280px;object-fit:cover;border-radius:12px;box-shadow:var(--shadow)}
blockquote{margin:0;padding:12px 16px;border-left:3px solid var(--accent);background:var(--tint);color:var(--ink);font-size:15px}
.report-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:36px;align-items:center}
.report-grid img{width:100%;height:380px;object-fit:cover;border-radius:12px}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow)}
.check-list strong{display:block;margin-bottom:4px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.review{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);min-height:180px}
.stars{color:var(--accent-deep);letter-spacing:2px;font-size:14px;margin:6px 0}
.who{font-size:13px;color:var(--muted);margin-top:10px}
.news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.news-feature{display:block;position:relative;min-height:340px;border-radius:12px;overflow:hidden;color:#fff;box-shadow:var(--shadow)}
.news-feature img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.news-feature .cap{position:absolute;inset:auto 0 0;padding:22px;background:linear-gradient(180deg,transparent,rgba(28,43,38,.88))}
.news-stack{display:flex;flex-direction:column;gap:12px}
.news-item{display:grid;grid-template-columns:92px 1fr;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;align-items:center;color:inherit;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease}
.news-item img{width:92px;height:72px;object-fit:cover;border-radius:8px}
.partners{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.partner{min-height:72px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:10px;background:#fff;color:#8A9690;filter:grayscale(1);transition:filter .2s ease,color .2s ease,transform .2s ease;font-weight:600;padding:8px;text-align:center}
.partner:hover{filter:none;color:var(--brand);transform:translateY(-3px)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item button{width:100%;text-align:left;padding:16px 8px;min-height:52px;display:flex;justify-content:space-between;gap:16px;color:var(--ink);font-weight:600}
.faq-item button span.plus{color:var(--brand);font-size:20px;line-height:1}
.faq-item .faq-a{display:none;padding:0 8px 16px;color:var(--text)}
.faq-item.is-open .faq-a{display:block}
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.guard{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);display:flex;gap:12px;align-items:flex-start}
.cta{padding:76px 0;background:linear-gradient(180deg,#E7F1EC,#F5F7F4)}
.cta-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:28px}
.contact-box,.form-box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}
.map-shot{margin-top:16px;border-radius:12px;overflow:hidden;height:180px}
.map-shot img{width:100%;height:180px;object-fit:cover}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid .full{grid-column:1/-1}
label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
input,select,textarea{width:100%;min-height:44px;border:1px solid var(--line-strong);border-radius:8px;padding:10px 12px;background:#fff}
textarea{min-height:96px;resize:vertical}
.form-feedback{padding:12px 14px;border-radius:8px;margin-bottom:14px}
.form-feedback.ok{background:#E7F1EC;color:var(--brand-ink);border:1px solid var(--line-strong)}
.form-feedback.err{background:#F8EEE8;color:#6B3B2A;border:1px solid #E4C7B6}
.site-footer{background:#1C2B26;color:#C9D6D0;padding:48px 0 20px}
.foot-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr 1fr;gap:24px;margin-bottom:28px}
.site-footer h3{color:#fff;font-size:16px;font-family:var(--font-sans)}
.site-footer a{color:#C9D6D0}
.site-footer a:hover{color:#fff}
.foot-copy{border-top:1px solid rgba(255,255,255,.08);padding-top:16px;font-size:13px;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
.hint-slide{display:none;font-size:12px;color:var(--muted);margin-top:8px}
@media (max-width:1280px){
  h1,.hero-copy h1,.hero-copy .hero-title{font-size:34px}
}
@media (max-width:1024px){
  h1,.hero-copy h1,.hero-copy .hero-title{font-size:32px}
  h2{font-size:24px}
  .intro-grid,.dark-grid,.report-grid,.news-layout,.cta-grid,.story,.story.reverse{grid-template-columns:1fr}
  .story.reverse .story-text{order:0}
  .product-grid{grid-template-columns:1fr 1fr}
  .product-grid .featured{grid-column:1/-1}
  .bento-lg,.bento-lg + .bento-lg{grid-column:span 6}
  .stats-grid{grid-template-columns:repeat(3,1fr);gap:18px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .site-header.is-compact .header-inner{flex-direction:column}
  .nav-bottom a{padding:8px 10px;font-size:13px}
}
@media (max-width:768px){
  .nav-top-right .nav-phone,.hours-tag,.nav-cta,.nav-bottom{display:none}
  .menu-toggle,.phone-fab{display:inline-flex}
  .nav-top{padding:8px 16px}
  .container{padding:0 20px}
  .section,.dark,.cta{padding:52px 0}
  .hero{min-height:560px;height:auto;max-height:none;padding-bottom:0}
  .slide-content{padding:86px 0 92px}
  .hero-copy h1,.hero-copy .hero-title,h1{font-size:30px}
  .btn-row{flex-direction:column;align-items:stretch}
  .bento,.bento-lg,.bento-lg + .bento-lg,.bento-sm{grid-template-columns:1fr;grid-column:span 12}
  .scene-track,.adv-grid,.review-grid,.guard-grid,.partners,.timeline,.stats-grid,.product-grid,.form-grid,.case-wall{grid-template-columns:1fr 1fr}
  .scene-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:12px;padding-bottom:8px}
  .scene-card{min-width:76%;scroll-snap-align:start}
  .hint-slide{display:block}
  .timeline:before{display:none}
  .carousel-nav{right:12px;bottom:16px}
  .intro-visual img,.story img,.report-grid img{height:240px}
  .foot-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  h1,.hero-copy h1,.hero-copy .hero-title{font-size:28px;max-height:calc(1.28em * 3);overflow:hidden}
  .adv-grid,.review-grid,.guard-grid,.partners,.stats-grid,.product-grid,.form-grid,.case-wall,.cta-grid{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr}
  .news-item img{width:100%;height:140px}
  .logo span{font-size:18px}
  .stat-num{font-size:30px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none !important;transition:none !important}
}