/* roulang page: index */
:root{
  --bg:#f3f5f4;--bg-alt:#e7eeec;--paper:#fff;--ink:#1b2427;--muted:#667477;
  --accent:#2f8f86;--accent-light:#5ec4b8;--cta:#d26a1b;--cta-dark:#a84e0d;
  --line:#c9d4d1;--ok:#3e7a62;--dark:#12181a;--dark-text:#e8eeec;
  --shadow:0 12px 30px rgba(27,36,39,.08);--radius:10px;--container:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Source Han Sans","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0}
img{display:block;max-width:100%;height:auto}
.container{width:min(var(--container),calc(100% - 48px));margin:auto}
.topbar{height:44px;background:var(--ink);color:#dce7e4;font-size:13px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.top-contact{display:flex;gap:22px;align-items:center}
.top-contact a{color:#fff;border-bottom:1px solid transparent}
.top-contact a:hover{color:var(--accent-light);border-color:var(--accent-light)}
.main-nav{height:74px;background:#fff;position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line);box-shadow:0 3px 15px rgba(27,36,39,.05)}
.nav-inner{height:100%;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:20px;font-weight:800;letter-spacing:-.04em}
.logo-mark{width:38px;height:28px;position:relative;border:2px solid var(--accent);border-radius:5px 5px 12px 12px;transform:skew(-8deg);overflow:hidden}
.logo-mark:after{content:"";position:absolute;right:5px;top:-4px;width:2px;height:38px;background:var(--cta);transform:rotate(28deg)}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-links a{font-size:14px;color:#536165;padding:25px 0 20px;border-bottom:2px solid transparent;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--accent);border-color:var(--accent)}
.nav-cta,.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;border-radius:5px;padding:11px 18px;font-weight:700;transition:.2s ease}
.nav-cta,.btn-primary{background:var(--cta);color:#fff;box-shadow:0 5px 12px rgba(210,106,27,.2)}
.nav-cta:hover,.btn-primary:hover{background:var(--cta-dark);transform:translateY(-2px)}
.btn-secondary{border:1px solid var(--ink);background:transparent;color:var(--ink)}
.btn-secondary:hover{background:var(--bg-alt);border-color:var(--accent);color:var(--accent)}
.btn:focus-visible,.nav-cta:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,.slider-btn:focus-visible{outline:2px solid var(--accent-light);outline-offset:3px}
.menu-toggle{display:none;background:none;font-size:28px;color:var(--ink);width:44px;height:44px}
.hero{min-height:610px;position:relative;color:#fff;overflow:hidden;background:#1b2427}
.hero-slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .55s ease;display:flex;align-items:center;background-size:cover;background-position:center}
.hero-slide:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,24,26,.9),rgba(18,24,26,.62) 48%,rgba(18,24,26,.2))}
.hero-slide.active{opacity:1;visibility:visible}
.hero-content{position:relative;z-index:1;max-width:730px;padding:85px 0}
.eyebrow{color:var(--accent-light);font-size:13px;letter-spacing:.08em;font-weight:700;margin-bottom:14px}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(32px,4vw,50px);max-width:700px}
h2{font-size:30px}
h3{font-size:19px}
.hero p{font-size:17px;color:#e1e9e7;max-width:680px;margin:22px 0 30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero .btn-secondary{color:#fff;border-color:#b7c7c3}
.hero .btn-secondary:hover{color:var(--ink)}
.hero-glass{position:absolute;right:9%;bottom:70px;width:310px;height:190px;border:1px solid rgba(94,196,184,.8);border-radius:45% 18% 12% 20%;transform:skew(-14deg) rotate(-8deg);background:linear-gradient(135deg,rgba(94,196,184,.2),rgba(255,255,255,.03));box-shadow:inset 0 0 0 7px rgba(255,255,255,.06),0 0 50px rgba(94,196,184,.16)}
.hero-glass:after{content:"夹层 / 光学检测";position:absolute;right:28px;bottom:24px;font-size:12px;color:#b9e6df;transform:skew(14deg) rotate(8deg)}
.slider-controls{position:absolute;z-index:3;bottom:35px;left:50%;transform:translateX(-50%);display:flex;gap:8px;align-items:center}
.slider-dot{width:38px;height:5px;background:rgba(255,255,255,.35);border-radius:2px}
.slider-dot.active{background:var(--cta)}
.slider-btn{position:absolute;z-index:3;top:50%;transform:translateY(-50%);width:48px;height:48px;background:rgba(18,24,26,.45);color:#fff;border:1px solid rgba(255,255,255,.3);font-size:25px}
.slider-prev{left:24px}.slider-next{right:24px}
section{padding:86px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:38px}
.section-head p{color:var(--muted);max-width:610px;font-size:15px}
.kicker{font-size:12px;color:var(--accent);font-weight:800;letter-spacing:.12em;margin-bottom:9px}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:58px;align-items:center}
.intro-image{min-height:390px;background:url('/assets/images/c4df764c1a1f1f5d.webp') center/cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.intro-copy p{color:var(--muted);margin:18px 0}
.info-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.info-list li{list-style:none;border-left:3px solid var(--accent);padding:9px 13px;background:var(--paper);font-size:14px}
.info-list strong{display:block;color:var(--ink);font-size:15px}
.features{background:var(--bg-alt)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s ease;position:relative;overflow:hidden}
.card:before{content:"";position:absolute;top:0;left:0;width:42px;height:3px;background:var(--accent)}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-3px)}
.feature-icon{width:44px;height:44px;border:1px solid var(--accent);color:var(--accent);display:grid;place-items:center;margin-bottom:18px;border-radius:6px;font-weight:800;font-size:19px}
.card p{color:var(--muted);font-size:14px;margin-top:10px;line-height:1.65}
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product-card{padding:0;overflow:hidden}
.product-image{height:190px;background-size:cover;background-position:center}
.product-body{padding:22px}
.param-list{list-style:none;color:var(--muted);font-size:13px;margin:13px 0 18px}
.param-list li{padding:3px 0;border-bottom:1px solid #edf1ef}
.param-list li:before{content:"—";color:var(--accent);margin-right:7px}
.scenes{background:#fff}
.scene-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.scene-item{min-height:190px;border-radius:var(--radius);overflow:hidden;position:relative;background-size:cover;background-position:center;color:#fff;padding:25px;display:flex;flex-direction:column;justify-content:end}
.scene-item:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(18,24,26,.86),transparent 70%)}
.scene-item>*{position:relative;z-index:1}
.scene-item:nth-child(1){grid-row:span 2;min-height:400px}
.scene-item h3{margin-bottom:6px}
.scene-item ul{list-style:none;font-size:13px;color:#e4eeeb}
.scene-item li:before{content:"·";margin-right:8px;color:var(--accent-light)}
.demo{background:var(--bg-alt)}
.demo-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.timeline{list-style:none;counter-reset:step}
.timeline li{counter-increment:step;display:grid;grid-template-columns:46px 1fr;gap:16px;padding:0 0 25px;position:relative}
.timeline li:not(:last-child):after{content:"";position:absolute;left:22px;top:42px;height:calc(100% - 27px);border-left:1px dashed var(--accent)}
.timeline li:before{content:counter(step,decimal-leading-zero);width:44px;height:44px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:12px;z-index:1}
.timeline p{color:var(--muted);font-size:14px;margin-top:4px}
.demo-visual{height:410px;border-radius:var(--radius);background:url('/assets/images/c890341071a4f1fc.webp') center/cover;position:relative;overflow:hidden}
.layer-note{position:absolute;right:18px;bottom:18px;background:rgba(18,24,26,.86);color:#fff;padding:15px;border-left:3px solid var(--accent-light);font-size:13px}
.cases{background:var(--dark);color:var(--dark-text);position:relative;overflow:hidden}
.cases:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,24,26,.97),rgba(18,24,26,.78)),url('/assets/images/853b95cb134ca6ef.jpg') center/cover;opacity:.65}
.cases .container{position:relative;z-index:1}
.case-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
.cases h2{font-size:34px}
.cases .section-head p{color:#b9c9c5}
.case-list{border-top:1px solid #40504e}
.case-row{display:grid;grid-template-columns:170px 1fr;gap:25px;padding:19px 0;border-bottom:1px solid #40504e}
.case-row strong{color:var(--accent-light)}
.case-row p{font-size:14px;color:#d0dcda}
.pricing{background:#fff}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
.price-card{border:1px solid var(--line);padding:28px;border-radius:var(--radius);background:var(--bg)}
.price-card.featured{border:2px solid var(--accent);background:#f4faf8}
.price-tag{display:inline-block;color:var(--accent);font-size:12px;font-weight:800;border:1px solid var(--accent);padding:3px 8px;margin-bottom:17px}
.price-card p{color:var(--muted);font-size:14px;min-height:52px;margin:13px 0}
.price-card ul{list-style:none;color:var(--muted);font-size:14px;margin-bottom:22px}
.price-card li{padding:5px 0}.price-card li:before{content:"✓";color:var(--ok);font-weight:bold;margin-right:8px}
.stories{background:var(--bg)}
.story-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
.story{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:grid;grid-template-columns:40% 60%}
.story.main-story{grid-row:span 2}
.story img{width:100%;height:100%;object-fit:cover;min-height:180px}
.story-content{padding:25px}.story-content p{color:var(--muted);font-size:14px;margin-top:10px}
.stats{background:var(--accent);color:#fff;padding:48px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{text-align:center;border-right:1px solid rgba(255,255,255,.3)}
.stat:last-child{border:0}.stat strong{display:block;font-size:38px;line-height:1.1}.stat span{font-size:13px;color:#d9f0eb}
.reviews{background:#fff}
.review-wall{columns:3 260px;column-gap:16px}
.review{break-inside:avoid;background:var(--bg);border:1px solid var(--line);padding:20px;margin-bottom:16px;border-radius:8px}
.stars{color:var(--cta);letter-spacing:2px;font-size:14px}
.review p{font-size:14px;margin:10px 0;color:#46565a}.review small{color:var(--muted)}
.testimonials{background:var(--dark);color:var(--dark-text)}
.quote-grid{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:16px}
.quote-card{border:1px solid #3a4948;padding:28px;min-height:190px}
.quote-card blockquote{font-size:19px;line-height:1.65;color:#eef7f4}.quote-card cite{display:block;color:var(--accent-light);font-size:13px;margin-top:22px;font-style:normal}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:27px}.badge{border:1px solid var(--accent-light);color:var(--accent-light);padding:5px 10px;font-size:12px}
.news{background:var(--bg-alt)}
.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.news-card img{height:140px;width:100%;object-fit:cover}.news-body{padding:17px}.news-body time{font-size:12px;color:var(--accent)}.news-body h3{font-size:17px;margin:7px 0}.news-body p{font-size:13px;color:var(--muted);line-height:1.6}
.faq{background:#fff}.faq-list{max-width:920px;margin:auto}
.faq-item{border-top:1px solid var(--line)}.faq-question{width:100%;background:none;text-align:left;padding:20px 5px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center}.faq-question span{font-size:24px;color:var(--accent);transition:.2s}.faq-answer{max-height:0;overflow:hidden;color:var(--muted);font-size:14px;transition:max-height .3s ease;padding:0 30px 0 5px}.faq-item.open .faq-answer{max-height:160px;padding-bottom:20px}.faq-item.open .faq-question span{transform:rotate(45deg)}
.cta-section{background:var(--bg-alt)}
.cta-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}
.contact-panel{background:var(--dark);color:#fff;padding:32px;border-radius:var(--radius);height:100%}
.contact-panel p{color:#c1cfcc;font-size:14px;margin:14px 0 25px}.contact-line{padding:12px 0;border-top:1px solid #3d4b4a;font-size:14px}.contact-line strong{display:block;color:var(--accent-light);font-size:12px}
.form-card{background:#fff;padding:30px;border:1px solid var(--line);border-radius:var(--radius)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:#fbfcfc;border-radius:4px;padding:11px 12px;color:var(--ink)}.field textarea{min-height:98px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);background:#fff}.error{color:var(--cta);font-size:12px;display:none}.form-message{margin-top:14px;color:var(--ok);font-size:14px}
footer{background:var(--ink);color:#dbe6e3;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.25fr .8fr 1fr;gap:55px}.footer-brand p{color:#9fb0ad;font-size:13px;max-width:330px;margin-top:14px}.footer-title{font-size:14px;color:var(--accent-light);margin-bottom:14px}.footer-links{display:grid;gap:7px;font-size:13px;color:#b7c6c2}.footer-links a:hover{color:#fff}.footer-meta{font-size:13px;color:#b7c6c2;line-height:2}.copyright{border-top:1px solid #3c4948;margin-top:38px;padding-top:18px;color:#91a09d;font-size:12px;display:flex;justify-content:space-between;gap:20px}
@media(max-width:1024px){.nav-links{gap:13px}.nav-links a{font-size:13px}.nav-inner{gap:15px}.hero-glass{right:3%;opacity:.5}.feature-grid{grid-template-columns:repeat(2,1fr)}.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:767px){.container{width:min(100% - 32px,600px)}.topbar{height:40px}.topbar .container{justify-content:center}.topbar .service-note,.topbar .business-hours,.topbar .mail{display:none}.top-contact{gap:0}.main-nav{height:68px}.nav-inner{justify-content:space-between}.menu-toggle{display:block}.nav-links{position:fixed;left:0;right:0;top:108px;background:#fff;display:none;flex-direction:column;align-items:stretch;padding:15px 24px 25px;box-shadow:0 12px 20px rgba(0,0,0,.12);gap:0}.nav-links.open{display:flex}.nav-links a{padding:13px 0;border-bottom:1px solid var(--line)}.nav-cta{display:none}.hero{min-height:650px}.hero-content{padding:75px 0 105px}.hero p{font-size:15px}.hero-glass{width:210px;height:125px;bottom:65px;right:7%}.slider-btn{top:auto;bottom:26px}.slider-prev{left:20px}.slider-next{right:20px}.slider-controls{bottom:47px}section{padding:66px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:13px}.intro-grid,.demo-layout,.case-layout,.cta-layout,.story-grid{grid-template-columns:1fr;gap:25px}.intro-image{min-height:260px}.feature-grid,.products-grid,.price-grid,.stats-grid{grid-template-columns:1fr}.scene-grid{grid-template-columns:1fr}.scene-item:nth-child(1){grid-row:auto;min-height:260px}.scene-item{min-height:210px}.story{grid-template-columns:1fr}.story img{height:210px}.stats-grid{gap:0}.stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.3);padding:18px}.stat:last-child{border:0}.quote-grid{grid-template-columns:1fr}.news-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr;gap:28px}.copyright{display:block}.copyright span{display:block;margin-top:7px}}
@media(max-width:375px){h2{font-size:26px}.hero-actions .btn{width:100%}.info-list{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: index */
:root{
  --ink:#1a1d21;--ink-2:#252a2e;--teal:#2f6f74;--teal-dark:#24575b;
  --amber:#c48a3a;--amber-dark:#9d6825;--paper:#f3f4f2;--floor:#e7e4de;
  --white:#fff;--muted:#697174;--line:#d5d8d5;--soft:#eef0ed;
  --radius:8px;--shadow:0 8px 26px rgba(26,29,33,.07);--max:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Source Han Sans SC","Microsoft YaHei",Arial,sans-serif;background:var(--paper);color:var(--ink);line-height:1.82;font-size:16px}
body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.16;background-image:linear-gradient(120deg,transparent 49.7%,rgba(47,111,116,.08) 50%,transparent 50.3%);background-size:180px 180px;z-index:-1}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:auto}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.section{padding:104px 0;position:relative}
.section.alt{background:var(--floor)}
.section.dark{background:var(--ink);color:#f7f5ef;overflow:hidden}
.section.dark:after{content:"";position:absolute;inset:0;opacity:.08;background-image:linear-gradient(90deg,transparent 49.5%,#b9d0ce 50%,transparent 50.5%),linear-gradient(0deg,transparent 49.5%,#b9d0ce 50%,transparent 50.5%);background-size:90px 90px;pointer-events:none}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:48px;position:relative;z-index:1}
.kicker{display:block;color:var(--teal);font-size:12px;letter-spacing:.16em;font-weight:700;text-transform:uppercase;margin-bottom:10px}
.dark .kicker{color:#d7a15c}
h1,h2,h3{line-height:1.25;letter-spacing:-.035em}
h1{font-size:clamp(36px,5vw,70px);font-weight:800}
h2{font-size:clamp(28px,3.2vw,44px);font-weight:800}
h3{font-size:20px;font-weight:750}
.section-head p{max-width:580px;color:var(--muted);font-size:16px}
.dark .section-head p{color:#bdc5c4}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border:1px solid transparent;border-radius:4px;font-weight:700;transition:.25s ease;gap:8px}
.btn-primary{background:var(--amber);color:#171717}
.btn-primary:hover{background:var(--amber-dark);color:#fff;transform:translateY(-2px)}
.btn-secondary{border-color:rgba(255,255,255,.55);color:#fff}
.btn-secondary:hover{border-color:var(--amber);color:#f0c17e;transform:translateY(-2px)}
.btn-outline{border-color:var(--teal);color:var(--teal)}
.btn-outline:hover{background:var(--teal);color:#fff;transform:translateY(-2px)}
.btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #e1ae65;outline-offset:3px}
.topbar{background:var(--ink);color:#c9d0cf;border-bottom:1px solid rgba(255,255,255,.12);font-size:13px}
.topbar .container{height:38px;display:flex;justify-content:space-between;align-items:center}
.top-info,.top-trust{display:flex;align-items:center;gap:22px}
.top-info a{color:#f4f1e9}.top-info a:hover{color:#e0aa63}
.top-trust span{padding-left:18px;border-left:1px solid #485052}
.main-nav{height:78px;background:rgba(243,244,242,.96);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:20;transition:.25s}
.main-nav.scrolled{box-shadow:0 5px 18px rgba(26,29,33,.09)}
.main-nav .container{display:flex;align-items:center;justify-content:space-between;gap:28px}
.logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:850;font-size:21px;letter-spacing:-.06em}
.logo-mark{width:29px;height:18px;border:2px solid var(--teal);border-radius:15px 15px 4px 4px;display:inline-block;position:relative}
.logo-mark:after{content:"";height:2px;background:var(--amber);position:absolute;left:4px;right:4px;bottom:3px}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:650}
.nav-links a{padding:10px 0;border-bottom:2px solid transparent;color:#465054}
.nav-links a:hover,.nav-links a.active{color:var(--teal);border-color:var(--amber)}
.nav-cta{white-space:nowrap;padding:11px 17px;background:var(--teal);color:#fff;border-radius:4px;font-weight:700;font-size:14px}
.nav-cta:hover{background:var(--teal-dark);transform:translateY(-2px)}
.menu-toggle{display:none;background:none;border:0;color:var(--ink);font-size:26px;width:44px;height:44px}
.hero{min-height:78vh;position:relative;background:var(--ink);color:#fff;overflow:hidden}
.slides{position:absolute;inset:0}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .65s ease}
.slide.active{opacity:1;visibility:visible}
.slide img{height:100%;object-fit:cover;filter:saturate(.72)}
.slide:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,21,23,.9) 0%,rgba(18,21,23,.63) 43%,rgba(18,21,23,.14) 100%)}
.hero-content{position:relative;z-index:2;min-height:78vh;display:flex;align-items:center}
.hero-copy{max-width:680px;padding:72px 0 104px}
.hero-copy .eyebrow{color:#e2b16b;font-size:13px;font-weight:700;letter-spacing:.18em;margin-bottom:18px}
.hero-copy p{font-size:18px;line-height:1.9;color:#e1e7e5;max-width:650px;margin:25px 0 31px}
.hero-actions{display:flex;gap:13px;flex-wrap:wrap}
.slide-meta{display:flex;gap:26px;margin-top:38px;color:#d4dcda;font-size:13px}
.slide-meta strong{display:block;color:#fff;font-size:22px;line-height:1.3}
.carousel-control{position:absolute;z-index:3;bottom:38px;right:max(24px,calc((100% - var(--max))/2));display:flex;gap:8px}
.carousel-control button{width:44px;height:44px;border:1px solid rgba(255,255,255,.5);background:rgba(20,24,25,.35);color:#fff;border-radius:3px}
.carousel-control button:hover{background:var(--amber);border-color:var(--amber)}
.dots{position:absolute;z-index:3;bottom:55px;left:max(24px,calc((100% - var(--max))/2));display:flex;gap:8px}
.dot{width:30px;height:3px;background:rgba(255,255,255,.45);border:0}.dot.active{background:var(--amber)}
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:76px;align-items:center}
.media-frame{position:relative;padding:0 0 20px 20px}
.media-frame:before{content:"";position:absolute;left:0;top:20px;width:72%;height:78%;border:1px solid var(--amber);z-index:0}
.media-frame img{position:relative;z-index:1;height:430px;object-fit:cover;border-radius:5px}
.plate{position:absolute;z-index:2;right:-18px;bottom:0;background:var(--ink);color:#fff;padding:17px 21px;border-left:4px solid var(--amber);font-size:14px}
.copy h2{margin-bottom:22px}.copy p{color:var(--muted);margin-bottom:20px}.check-list{list-style:none;border-top:1px solid var(--line);margin-top:24px}
.check-list li{padding:14px 0 14px 28px;border-bottom:1px solid var(--line);position:relative;color:#3e484b}
.check-list li:before{content:"";position:absolute;left:3px;top:23px;width:9px;height:9px;border:2px solid var(--amber);transform:rotate(45deg)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.feature-card{border:1px solid var(--line);background:rgba(255,255,255,.54);padding:27px 25px;min-height:205px;transition:.25s}
.feature-card:hover{transform:translateY(-3px);border-color:var(--teal);box-shadow:var(--shadow)}
.line-icon{width:38px;height:38px;border:1px solid var(--teal);display:grid;place-items:center;color:var(--teal);margin-bottom:22px;position:relative}
.line-icon:after{content:"";width:15px;height:15px;border:1px solid var(--amber);transform:rotate(45deg)}
.feature-card p,.product-card p{color:var(--muted);font-size:14px;line-height:1.75;margin-top:10px}
.product-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px;align-items:stretch}
.product-card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;transition:.25s}
.product-card:first-child{grid-row:span 2}
.product-card:hover{border-color:var(--teal);transform:translateY(-3px);box-shadow:var(--shadow)}
.product-card img{height:220px;object-fit:cover}.product-card:first-child img{height:310px}
.product-body{padding:24px;display:flex;flex-direction:column;flex:1}
.tag{display:inline-flex;width:max-content;background:#e2eceb;color:var(--teal-dark);font-size:12px;padding:3px 9px;border-radius:2px;font-weight:700}
.product-body h3{margin-top:13px}
.specs{list-style:none;margin:15px 0 19px;color:#50595b;font-size:13px;line-height:1.85}
.specs li{border-bottom:1px dotted #c9cfcb;padding:4px 0}.specs b{color:var(--ink);margin-right:5px}
.product-body .btn{margin-top:auto;align-self:flex-start;min-height:40px;padding:0 15px;font-size:13px}
.scene-wrap{display:grid;grid-template-columns:260px 1fr;gap:40px}
.scene-tabs{border-left:2px solid var(--line)}
.scene-tab{display:block;width:100%;text-align:left;padding:14px 17px;border:0;background:none;color:var(--muted);font-weight:700;border-left:3px solid transparent}
.scene-tab:hover,.scene-tab.active{color:var(--teal);border-left-color:var(--amber);background:#f7f8f5}
.scene-panel{display:none;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.scene-panel.active{display:grid}
.scene-panel img{height:330px;object-fit:cover}.scene-panel p{color:var(--muted);margin:16px 0}
.scene-points{list-style:none;color:#465154}.scene-points li{padding:9px 0;border-bottom:1px solid var(--line)}
.scene-points li:before{content:"↗";color:var(--amber);margin-right:10px}
.process-board{background:#fff;border:1px solid var(--line);padding:30px}
.step-track{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-bottom:32px}
.step{position:relative;padding:0 18px 0 0}.step:not(:last-child):after{content:"";height:1px;background:var(--teal);position:absolute;top:16px;left:39px;right:12px}
.step-num{display:grid;place-items:center;width:33px;height:33px;background:var(--ink);color:#fff;border-radius:50%;font-size:13px;position:relative;z-index:1;margin-bottom:14px}
.step h3{font-size:16px}.step p{font-size:13px;color:var(--muted);line-height:1.7;margin-top:7px}
.demo-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
.demo-grid img{height:280px;object-fit:cover}
.demo-note{background:var(--ink);color:#fff;padding:31px}.demo-note h3{color:#e4b36d;margin-bottom:18px}.demo-note p{color:#c5cdcb;font-size:14px}.measure-table{width:100%;border-collapse:collapse;margin-top:22px;font-size:13px}.measure-table td{padding:9px;border-bottom:1px solid #465054}.measure-table td:last-child{text-align:right;color:#e5b66f}
.case-list{position:relative;z-index:1;border-top:1px solid #4b5354}.case-row{display:grid;grid-template-columns:1fr 1.8fr .8fr;align-items:center;gap:30px;padding:25px 0;border-bottom:1px solid #4b5354}.case-row strong{font-size:20px}.case-row p{color:#c4cecc;font-size:14px}.case-label{color:#e1af67;font-size:13px}.case-foot{display:flex;justify-content:space-between;align-items:end;margin-top:44px;position:relative;z-index:1}.case-foot blockquote{font-size:28px;max-width:620px;line-height:1.45;font-weight:700}.case-foot img{width:250px;height:140px;object-fit:cover;opacity:.8}
.price-table{overflow-x:auto;background:#fff;border:1px solid var(--line)}.price-table table{width:100%;min-width:760px;border-collapse:collapse}.price-table th,.price-table td{text-align:left;padding:19px 22px;border-bottom:1px solid var(--line);vertical-align:top}.price-table th{background:var(--ink);color:#fff;font-size:18px}.price-table th.recommend{border-top:4px solid var(--amber);background:#283f40}.price-table td:first-child{width:22%;font-weight:700;color:var(--teal-dark)}.price-table ul{list-style:none;color:var(--muted);font-size:14px;line-height:1.8}.price-table li:before{content:"＋";color:var(--amber);margin-right:5px}.price-note{font-size:13px;color:var(--muted);margin-top:15px}
.stories{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.story{background:#fff;border:1px solid var(--line);padding:23px;display:grid;grid-template-columns:64px 1fr;gap:16px}.story img{width:64px;height:64px;object-fit:cover;border-radius:50%;border:3px solid #e1e6e2}.story h3{font-size:17px}.story .date{font-size:12px;color:var(--amber)}.story p{grid-column:1/-1;color:var(--muted);font-size:14px;line-height:1.8}
.stats{background:var(--teal);color:#fff;padding:48px 0}.stat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;text-align:center}.stat{border-right:1px solid rgba(255,255,255,.25)}.stat:last-child{border:0}.stat strong{display:block;font-size:38px;line-height:1.2;color:#f1c078}.stat span{font-size:13px;color:#e0e8e6}
.review-wall{columns:3 260px;column-gap:16px}.review{break-inside:avoid;background:#fff;border:1px solid var(--line);padding:21px;margin-bottom:16px}.stars{color:var(--amber);letter-spacing:2px;font-size:14px}.review p{font-size:14px;color:#4e585b;margin:10px 0}.review-foot{font-size:12px;color:var(--muted);display:flex;justify-content:space-between}.pill{background:var(--soft);padding:3px 8px;color:var(--teal-dark)}
.voice-box{display:grid;grid-template-columns:1fr 1fr;background:var(--ink);color:#fff;min-height:330px}.voice-image{position:relative}.voice-image img{height:100%;object-fit:cover}.voice-image:after{content:"处理前";position:absolute;left:18px;top:18px;background:var(--amber);color:#1a1d21;padding:4px 10px;font-size:12px;font-weight:700}.voice-copy{padding:42px}.voice-copy h3{font-size:28px;margin-bottom:15px}.voice-copy p{color:#cbd3d0}.voice-steps{display:flex;gap:10px;margin-top:27px}.voice-steps span{border:1px solid #66706f;padding:8px 11px;font-size:12px}.news-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.news-card{background:#fff;border:1px solid var(--line);transition:.25s}.news-card:hover{transform:translateY(-3px);border-color:var(--teal)}.news-card img{height:150px;object-fit:cover}.news-body{padding:18px}.news-body time{font-size:12px;color:var(--amber)}.news-body h3{font-size:17px;margin:8px 0}.news-body p{font-size:13px;color:var(--muted);line-height:1.75}
.faq-list{max-width:920px;margin:auto;border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{list-style:none;cursor:pointer;padding:20px 45px 20px 0;font-weight:750;position:relative}summary::-webkit-details-marker{display:none}summary:after{content:"＋";position:absolute;right:8px;color:var(--teal);font-size:23px;font-weight:400}details[open] summary:after{content:"－"}details p{background:#e9eeeb;padding:18px 25px;margin-bottom:18px;color:#556064;font-size:15px}
.cta-section{background:var(--ink);color:#fff}.cta-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:start}.cta-copy p{color:#c5cfcc;margin:20px 0 28px}.cta-points{display:flex;gap:9px;flex-wrap:wrap}.cta-points span{border:1px solid #586362;padding:7px 12px;color:#e8bb79;font-size:13px}.contact-form{background:#f5f6f3;color:var(--ink);padding:30px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{border:1px solid #ccd3cf;background:#fff;padding:11px 12px;border-radius:3px;color:var(--ink);min-width:0}.field textarea{min-height:90px;resize:vertical}.form-submit{margin-top:18px;width:100%}.form-tip{font-size:12px;color:var(--muted);margin-top:10px}
.cert-layout{display:flex;justify-content:space-between;align-items:center;gap:35px}.badges{display:flex;gap:12px;flex-wrap:wrap}.badge{width:145px;height:95px;border:1px solid var(--teal);display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--teal-dark);background:#fff}.badge strong{font-size:22px}.badge small{font-size:12px}.fitment{max-width:430px}.fitment p{color:var(--muted);font-size:14px;margin-top:12px}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}.chips span{padding:5px 11px;border:1px solid var(--line);font-size:12px;color:#586266;background:#fff}
.timeline{display:grid;grid-template-columns:repeat(6,1fr);gap:0}.time-item{padding:22px 16px 0;border-top:2px solid var(--teal);position:relative}.time-item:before{content:"";position:absolute;top:-8px;left:16px;width:13px;height:13px;background:var(--amber);border:3px solid var(--paper);border-radius:50%}.time-item strong{display:block;font-size:16px;margin-bottom:7px}.time-item p{font-size:13px;color:var(--muted);line-height:1.7}
footer{background:#111416;color:#bbc4c2;padding:65px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px;padding-bottom:44px;border-bottom:1px solid #3b4243}.footer-logo{color:#fff;margin-bottom:14px}.footer-col h3{color:#fff;font-size:15px;margin-bottom:16px}.footer-col p,.footer-col a{font-size:13px;line-height:2;color:#aeb8b5}.footer-col a:hover{color:#e4b167}.copyright{display:flex;justify-content:space-between;gap:15px;padding-top:19px;font-size:12px;color:#788382}
@media(max-width:1100px){.nav-links{gap:12px}.nav-cta{padding:10px 12px}.split{gap:40px}.section{padding:82px 0}.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.container{width:min(var(--max),calc(100% - 32px))}.topbar .container{height:auto;min-height:38px;padding:7px 0}.top-trust{display:none}.top-info{gap:13px}.main-nav{height:68px}.nav-links{position:fixed;top:106px;right:-100%;bottom:0;width:min(320px,86vw);background:var(--paper);display:flex;align-items:stretch;flex-direction:column;padding:22px 28px;gap:0;box-shadow:-9px 0 25px rgba(0,0,0,.12);transition:right .3s}.nav-links.open{right:0}.nav-links a{padding:14px 0}.nav-cta{display:none}.menu-toggle{display:block}.hero,.hero-content{min-height:68vh}.hero-copy{padding:55px 0 90px}.hero-copy p{font-size:16px}.feature-grid{grid-template-columns:repeat(2,1fr)}.split,.scene-panel,.demo-grid,.cta-layout{grid-template-columns:1fr;gap:35px}.media-frame img{height:340px}.scene-wrap{grid-template-columns:1fr;gap:24px}.scene-tabs{display:flex;overflow:auto;border-left:0;border-bottom:2px solid var(--line)}.scene-tab{min-width:max-content;border-left:0;border-bottom:3px solid transparent}.scene-tab.active{border-bottom-color:var(--amber)}.product-grid{grid-template-columns:1fr 1fr}.product-card:first-child{grid-row:auto;grid-column:span 2}.product-card:first-child img,.product-card img{height:240px}.stories{grid-template-columns:1fr 1fr}.stat-grid{grid-template-columns:repeat(3,1fr);row-gap:30px}.stat:nth-child(3){border:0}.cert-layout{align-items:flex-start;flex-direction:column}.timeline{grid-template-columns:repeat(3,1fr);row-gap:35px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){body{font-size:16px}.section{padding:66px 0}.section-head{display:block;margin-bottom:30px}.section-head p{margin-top:15px}.top-info{font-size:12px;gap:10px}.top-info span:first-child{display:none}.logo{font-size:18px}.hero-copy h1{font-size:37px}.hero-copy p{line-height:1.8}.slide-meta{gap:16px;margin-top:27px}.slide-meta strong{font-size:18px}.carousel-control{right:16px;bottom:22px}.dots{left:16px;bottom:43px}.feature-grid,.product-grid,.stories,.news-grid{grid-template-columns:1fr}.product-card:first-child{grid-column:auto}.product-card:first-child img,.product-card img{height:220px}.media-frame{padding-left:10px}.media-frame img{height:270px}.plate{right:-3px;padding:12px;font-size:12px}.process-board{padding:20px 15px}.step-track{grid-template-columns:1fr;gap:22px;margin-bottom:10px}.step{padding:0 0 0 51px}.step:not(:last-child):after{width:1px;height:30px;left:16px;top:35px;right:auto}.step-num{position:absolute;left:0;top:0}.demo-grid img{height:220px}.case-row{grid-template-columns:1fr;gap:5px;padding:20px 0}.case-foot{display:block}.case-foot blockquote{font-size:23px}.case-foot img{margin-top:22px;width:100%;height:170px}.stat-grid{grid-template-columns:repeat(2,1fr)}.stat{border-right:1px solid rgba(255,255,255,.25)!important}.stat:nth-child(2n){border:0!important}.stat strong{font-size:30px}.voice-box{grid-template-columns:1fr}.voice-image{height:220px}.voice-copy{padding:28px 22px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid .footer-col:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:7px}.badges{width:100%}.badge{flex:1;min-width:120px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}.slide{transition:none}.main-nav{transition:none}}
@media print{.topbar,.main-nav,.carousel-control,.dots,.btn,.contact-form{display:none}.section{padding:30px 0}.dark{background:#fff!important;color:#000!important}}