/* roulang page: index */
:root{
            --ink:#2d1c2e;
            --muted:#766772;
            --paper:#fbf7f1;
            --warm:#f3e9df;
            --card:#fffdfa;
            --line:#e8dcd4;
            --coral:#dd6b5d;
            --berry:#a94761;
            --plum:#352137;
            --peach:#f6c7ae;
            --shadow:0 18px 45px rgba(53,33,55,.08);
            --radius:18px;
            --container:1180px;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth}
        body{font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
        a{color:inherit;text-decoration:none}
        img{display:block;max-width:100%}
        button,input,select,textarea{font:inherit}
        button{cursor:pointer}
        :focus-visible{outline:3px solid rgba(221,107,93,.45);outline-offset:3px}
        .container{width:min(var(--container),calc(100% - 48px));margin:auto}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(251,247,241,.94);border-bottom:1px solid rgba(232,220,212,.9);backdrop-filter:blur(12px)}
        .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
        .brand{font-weight:900;letter-spacing:-.04em;font-size:20px;color:var(--plum);white-space:nowrap}
        .brand span{color:var(--coral)}
        .nav-links{display:flex;align-items:center;gap:25px;font-size:14px;color:#675864}
        .nav-links a{padding:8px 0;position:relative}
        .nav-links a:after{content:"";position:absolute;left:0;bottom:1px;width:0;height:2px;background:var(--coral);transition:.25s}
        .nav-links a:hover,.nav-links a.active{color:var(--plum)}
        .nav-links a:hover:after,.nav-links a.active:after{width:100%}
        .nav-cta,.btn-primary{background:var(--coral);color:#fff;border:1px solid var(--coral);border-radius:999px;padding:12px 20px;font-weight:700;transition:.25s}
        .nav-cta:hover,.btn-primary:hover{background:#bd554f;border-color:#bd554f;transform:translateY(-2px)}
        .menu-toggle{display:none;border:0;background:none;color:var(--plum);font-size:25px}
        .hero{padding:82px 0 74px;position:relative;overflow:hidden}
        .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(251,247,241,.98) 20%,rgba(251,247,241,.74) 60%,rgba(251,247,241,.25)),url('/assets/images/31e4d5cdb6be91eb.jpg') center/cover;opacity:.9;z-index:-1}
        .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
        .eyebrow,.section-kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--berry);font-weight:800}
        h1{font-size:clamp(42px,6vw,78px);line-height:1.1;letter-spacing:-.065em;max-width:700px;margin:17px 0 24px}
        .hero-copy{font-size:18px;color:#5f505d;max-width:640px}
        .hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin:32px 0 25px}
        .btn-secondary{border:1px solid var(--plum);color:var(--plum);border-radius:999px;padding:12px 20px;font-weight:700;background:rgba(255,253,250,.65);transition:.25s}
        .btn-secondary:hover{background:var(--plum);color:#fff;transform:translateY(-2px)}
        .hero-note{font-size:13px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap}
        .hero-panel{background:var(--plum);color:#fff;border-radius:24px;padding:28px;box-shadow:var(--shadow);transform:rotate(1.5deg)}
        .panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:18px;margin-bottom:22px}
        .panel-label{font-size:13px;color:#e8c9c9}
        .status-dot{width:9px;height:9px;background:#e6a081;border-radius:50%;display:inline-block;margin-right:7px}
        .panel-title{font-size:31px;line-height:1.25;letter-spacing:-.04em;margin-bottom:14px}
        .panel-text{color:#ddcbd5;font-size:14px}
        .panel-list{margin-top:27px;display:grid;gap:12px}
        .panel-list li{list-style:none;display:flex;justify-content:space-between;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
        .panel-list b{color:#f4b39c;font-weight:700}
        section{padding:92px 0;scroll-margin-top:80px}
        .section-head{max-width:720px;margin-bottom:42px}
        h2{font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.055em;margin:12px 0 16px}
        .section-head p{color:var(--muted);font-size:16px}
        .soft-section{background:var(--warm)}
        .question-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .question{padding:26px 22px;border-right:1px solid var(--line)}
        .question:last-child{border-right:0}
        .number{color:var(--coral);font-weight:900;font-size:14px}
        .question h3{font-size:19px;line-height:1.4;margin:12px 0 8px}
        .question p,.feature p,.scene p,.audience p,.guide p{color:var(--muted);font-size:14px}
        .feature-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
        .feature-card{padding:30px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);min-height:210px;transition:.3s}
        .feature-card:hover,.guide:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
        .feature-card.large{grid-row:span 2;background:var(--plum);color:#fff}
        .feature-card.large p{color:#ddcbd5}
        .feature-card h3,.scene h3,.guide h3{font-size:23px;margin:17px 0 10px;letter-spacing:-.03em}
        .feature-mark{font-size:12px;color:var(--coral);font-weight:800;letter-spacing:.1em}
        .feature-card.large .feature-mark{color:var(--peach)}
        .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
        .steps:before{content:"";position:absolute;top:27px;left:8%;right:8%;height:1px;background:var(--line)}
        .step{position:relative;padding:0 20px 0 0}
        .step-badge{position:relative;width:55px;height:55px;display:grid;place-items:center;background:var(--paper);border:1px solid var(--coral);border-radius:50%;color:var(--coral);font-weight:900;margin-bottom:22px}
        .step h3{font-size:19px;margin-bottom:8px}
        .step p{color:var(--muted);font-size:14px;padding-right:20px}
        .info-board{display:grid;grid-template-columns:1.1fr .9fr;background:var(--plum);color:#fff;border-radius:22px;overflow:hidden}
        .info-copy{padding:42px}
        .info-copy p{color:#dfcbd5;margin-top:14px}
        .info-image{min-height:330px;background:url('/assets/images/cafe2edc89c8f306.jpg') center/cover}
        .data-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(255,255,255,.15);margin-top:30px}
        .data-item{padding:20px;background:rgba(53,33,55,.7)}
        .data-item small{display:block;color:#d6bdc8;font-size:12px;margin-bottom:4px}
        .data-item strong{font-size:18px}
        .scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
        .scene{display:grid;grid-template-columns:150px 1fr;gap:22px;align-items:center;padding:20px;background:var(--card);border-bottom:1px solid var(--line)}
        .scene-image{height:130px;border-radius:14px;background:url('/assets/images/79b7597724144fb1.jpg') center/cover}
        .timeline{border-left:2px solid var(--peach);padding-left:30px;display:grid;gap:28px}
        .update{position:relative;padding:22px 25px;background:var(--card);border:1px solid var(--line);border-radius:14px}
        .update:before{content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--coral);left:-37px;top:29px;box-shadow:0 0 0 5px var(--paper)}
        .update-meta{font-size:12px;color:var(--berry);font-weight:800}
        .update h3{font-size:20px;margin:7px 0}
        .update p{color:var(--muted);font-size:14px}
        .compatibility{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
        .compat-item{padding:24px;background:#fff;border-top:3px solid var(--coral)}
        .compat-item h3{font-size:19px;margin-bottom:9px}
        .compat-item p{font-size:14px;color:var(--muted)}
        .feedback{display:grid;grid-template-columns:1fr .8fr;gap:40px;align-items:center}
        .feedback-quote{border-left:4px solid var(--coral);padding:12px 0 12px 25px;font-size:22px;line-height:1.5}
        .feedback-note{color:var(--muted);font-size:14px;margin-top:16px}
        .audience-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
        .audience{padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
        .audience h3{font-size:18px;margin:12px 0 8px}
        .guide-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}
        .guide{display:flex;gap:20px;padding:22px;background:var(--card);border:1px solid var(--line);transition:.3s}
        .guide-num{font-size:28px;color:var(--coral);font-weight:900;line-height:1}
        .guide h3{font-size:18px;margin:0 0 7px}
        .overview{display:flex;justify-content:space-between;gap:20px;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
        .overview-item{flex:1;border-right:1px solid var(--line);padding-left:22px}
        .overview-item:first-child{padding-left:0}
        .overview-item:last-child{border-right:0}
        .overview strong{display:block;font-size:28px;letter-spacing:-.04em;color:var(--berry)}
        .overview span{font-size:13px;color:var(--muted)}
        .faq-list{display:grid;gap:10px;max-width:900px}
        details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 22px}
        summary{cursor:pointer;list-style:none;padding:20px 28px 20px 0;font-weight:700;position:relative}
        summary::-webkit-details-marker{display:none}
        summary:after{content:"＋";position:absolute;right:0;color:var(--coral);font-size:20px}
        details[open] summary:after{content:"−"}
        details p{color:var(--muted);font-size:14px;padding:0 0 20px}
        .final-cta{background:var(--plum);color:#fff;padding:74px 0}
        .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}
        .final-cta h2{max-width:650px;margin:10px 0}
        .final-cta p{color:#ddcbd5;max-width:650px}
        .footer{background:#241727;color:#fff;padding:36px 0 24px}
        .footer-top{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
        .footer .brand{color:#fff}
        .footer-links{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:#d7c3cf}
        .footer-links a:hover{color:var(--peach)}
        .copyright{border-top:1px solid rgba(255,255,255,.14);margin-top:30px;padding-top:18px;color:#aa95a3;font-size:12px}
        @media(max-width:900px){
            .nav-links{gap:13px}.nav-cta{padding:10px 14px}
            .hero-grid,.info-board,.feedback{grid-template-columns:1fr;gap:35px}
            .hero-panel{transform:none}.question-strip,.steps,.audience-grid{grid-template-columns:repeat(2,1fr)}
            .question:nth-child(2){border-right:0}.question{border-bottom:1px solid var(--line)}
            .step{padding-bottom:28px}.steps:before{display:none}
        }
        @media(max-width:700px){
            .container{width:min(100% - 34px,600px)}
            .nav-wrap{height:66px}.menu-toggle{display:block}
            .nav-links{display:none;position:absolute;left:17px;right:17px;top:74px;background:var(--card);padding:18px;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
            .nav-links.open{display:flex}.nav-links a{padding:9px 4px}.nav-cta{display:none}
            section{padding:68px 0}.hero{padding:62px 0}
            h1{font-size:43px}.hero-copy{font-size:16px}
            .question-strip,.steps,.feature-grid,.scene-grid,.compatibility,.audience-grid,.guide-layout{grid-template-columns:1fr}
            .feature-card.large{grid-row:auto}.scene{grid-template-columns:105px 1fr}.scene-image{height:105px}
            .info-copy{padding:28px}.info-image{min-height:230px}
            .overview{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
            .overview-item{border-right:0;padding-left:0}.cta-inner,.footer-top{display:block}
            .cta-inner .btn-primary{display:inline-block;margin-top:25px}.footer-links{margin-top:22px}
        }
        @media(max-width:420px){
            .hero-actions{display:grid}.hero-actions a{width:100%;text-align:center}
            .data-list{grid-template-columns:1fr}.scene{grid-template-columns:1fr}.scene-image{height:150px}
            .feedback-quote{font-size:19px}
        }
        @media(prefers-reduced-motion:reduce){
            *,html{scroll-behavior:auto!important;transition:none!important}
        }