:root{
      --bg:#f5f4f1;
      --card:#ffffff;
      --text:#111111;
      --muted:#6f747c;
      --light:#9aa0a8;
      --border:#e7e4de;
      --accent:#161616;
      --soft:#efede8;
      --green:#4d7c58;
      --green-bg:#eef7f0;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
      -webkit-font-smoothing:antialiased;
      line-height:1.65;
    }
    a{text-decoration:none;color:inherit}
    button,input,textarea,select{font:inherit}
    .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
    header{
      padding:24px 0;
      border-bottom:1px solid rgba(0,0,0,.05);
      position:sticky;
      top:0;
      backdrop-filter:blur(14px);
      background:rgba(245,244,241,.8);
      z-index:10;
    }
    .nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
    .logo{font-size:22px;font-weight:750;letter-spacing:-.04em;cursor:pointer}
    .nav-links{display:flex;gap:28px;color:var(--muted);font-size:15px}
    .nav-right{display:flex;align-items:center;gap:16px}
    .nav a:hover,.logo:hover{opacity:.72}
    .ghost{color:var(--muted);font-size:15px;border:0;background:transparent;cursor:pointer;padding:0}
    .button{background:var(--accent);color:white;padding:11px 18px;border-radius:999px;font-size:14px;font-weight:650;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}
    .button:hover{transform:translateY(-1px)}
    .secondary{color:var(--muted);font-weight:560;display:inline-flex;align-items:center;gap:4px}
    .page{display:none}
    .page.active{display:block}

    .hero{padding:100px 0 78px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#6d7278;border:1px solid var(--border);border-radius:999px;padding:6px 12px;background:rgba(255,255,255,.72);margin-bottom:24px}
    h1{margin:0 0 22px;font-size:72px;line-height:1.02;letter-spacing:-.06em;max-width:760px}
    .hero p{margin:0;font-size:20px;color:var(--muted);max-width:620px}
    .hero-actions{margin-top:36px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
    .hero-card{background:var(--card);border:1px solid var(--border);border-radius:28px;padding:30px;box-shadow:0 24px 60px rgba(0,0,0,.05)}
    .hero-card-top{display:flex;justify-content:space-between;margin-bottom:28px;gap:16px}
    .status{font-size:13px;color:var(--green);background:var(--green-bg);padding:6px 10px;border-radius:999px;white-space:nowrap}
    .survey-preview{border:1px solid var(--border);border-radius:18px;padding:18px;margin-bottom:16px;background:#fff}
    .survey-preview strong{display:block;margin-bottom:10px;font-size:15px;line-height:1.45}
    .mini-answer{background:#fbfaf7;border:1px solid var(--border);border-radius:14px;padding:12px 13px;color:#4c535b;font-size:14px;line-height:1.55}
    .visual-preview{padding-bottom:16px}
    .preview-thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
    .preview-thumbs img{width:100%;height:72px;display:block;object-fit:cover;border:1px solid var(--border);border-radius:14px;background:#fbfaf7}
    .insight-preview{border:1px solid #dfe8dd;background:#f8fbf7;border-radius:18px;padding:18px;margin-top:2px}
    .insight-preview .section-kicker{font-size:12px;margin-bottom:8px;color:#6f8a74}
    .insight-preview p{margin:0;color:#4c535b;font-size:14px;line-height:1.6}
    .features{padding:10px 0 64px}
    .section-kicker{font-size:14px;color:var(--light);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;font-weight:700}
    .section-title{margin:0 0 18px;font-size:40px;line-height:1.16;letter-spacing:-.05em}
    .section-desc{margin:0 0 28px;color:var(--muted);font-size:17px;max-width:720px}
    .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .feature{background:rgba(255,255,255,.72);border:1px solid var(--border);border-radius:22px;padding:28px}
    .feature h3{margin:0 0 12px;font-size:20px;letter-spacing:-.03em}
    .feature p{margin:0;color:var(--muted);font-size:15px}

    .signal-section{padding:16px 0 74px;display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start}
    .signal-grid{display:grid;gap:14px}
    .signal-card{background:white;border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:0 18px 42px rgba(0,0,0,.03)}
    .signal-num{font-size:13px;color:var(--light);margin-bottom:10px}
    .signal-card h3{margin:0 0 8px;font-size:20px;letter-spacing:-.03em}
    .signal-card p{margin:0;color:var(--muted);font-size:15px}

    .questionnaire-section{padding:8px 0 76px;display:grid;grid-template-columns:.88fr 1.12fr;gap:34px;align-items:start}
    .questionnaire-grid{display:grid;gap:14px}
    .questionnaire-card{background:white;border:1px solid var(--border);border-radius:22px;padding:24px;box-shadow:0 18px 42px rgba(0,0,0,.03)}
    .questionnaire-card span{display:block;color:var(--light);font-size:13px;margin-bottom:10px}
    .questionnaire-card h3{margin:0 0 8px;font-size:20px;letter-spacing:-.03em}
    .questionnaire-card p{margin:0;color:var(--muted);font-size:15px}

    .about-panel{padding:36px 0 80px}
    .about-box{background:white;border:1px solid var(--border);border-radius:28px;padding:40px;display:grid;grid-template-columns:.9fr 1.1fr;gap:46px;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .about-box p{margin:0 0 16px;color:var(--muted);font-size:17px}
    .about-list{display:grid;gap:14px}
    .about-item{border-bottom:1px solid var(--border);padding-bottom:14px;color:#4c535b}

    .workflow{padding:30px 0 90px}
    .workflow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}
    .step{background:white;border:1px solid var(--border);border-radius:20px;padding:24px}
    .step-num{color:var(--light);font-size:13px;margin-bottom:12px}
    .step h4{margin:0 0 10px;font-size:18px}
    .step p{margin:0;color:var(--muted);font-size:14px}

    .cta-panel{margin:0 0 72px;background:white;border:1px solid var(--border);border-radius:28px;padding:38px;display:flex;justify-content:space-between;gap:30px;align-items:center;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .cta-panel h2{margin:0 0 10px;font-size:32px;line-height:1.18;letter-spacing:-.05em}
    .cta-panel p{margin:0;color:var(--muted);font-size:16px;max-width:620px}
    .cta-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;justify-content:flex-end}

    .quote{padding:62px 0 90px}
    .quote-box{background:#121212;color:white;border-radius:32px;padding:52px}
    .quote-box p{margin:0;font-size:34px;line-height:1.35;letter-spacing:-.04em;max-width:920px}
    .quote-meta{margin-top:26px;color:rgba(255,255,255,.58);font-size:15px}

    footer{padding:38px 0 70px;border-top:1px solid rgba(0,0,0,.06);display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;color:var(--muted);font-size:14px}
    .footer-links{display:flex;gap:20px;flex-wrap:wrap}

    .subpage{padding:76px 0 96px;min-height:calc(100vh - 180px)}
    .subpage-narrow{max-width:820px}
    .subpage h1{font-size:54px;margin-bottom:18px}
    .subpage p{color:var(--muted);font-size:17px;margin:0 0 16px}
    .content-card{background:white;border:1px solid var(--border);border-radius:28px;padding:34px;margin-top:32px;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .content-card h2{font-size:26px;letter-spacing:-.04em;margin:0 0 14px}
    .content-card h3{font-size:18px;margin:28px 0 8px}
    .content-card ul{margin:14px 0 0;padding-left:1.2em;color:var(--muted)}
    .content-card li{margin:8px 0}

    .demo-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:28px;align-items:start;margin-top:34px}
    .demo-aside{background:white;border:1px solid var(--border);border-radius:26px;padding:26px;position:sticky;top:98px}
    .demo-aside h2{font-size:24px;margin:0 0 8px;letter-spacing:-.04em}
    .demo-aside p{font-size:15px;color:var(--muted);margin:0}
    .demo-note-list{display:grid;gap:10px;margin-top:24px}
    .demo-note-list span{border-top:1px solid var(--border);padding-top:10px;color:#4c535b;font-size:14px}
    .demo-form{background:white;border:1px solid var(--border);border-radius:28px;padding:34px;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .module-label{margin:28px 0 4px;color:var(--light);font-size:13px;font-weight:750;text-transform:uppercase;letter-spacing:.08em}
    .module-label:first-child{margin-top:0}
    .field{padding:22px 0;border-bottom:1px solid var(--border)}
    .field:first-child{padding-top:0}
    .field:last-child{border-bottom:0}
    .label{display:block;font-weight:700;margin-bottom:12px}
    input[type="text"],textarea,select{width:100%;border:1px solid var(--border);border-radius:16px;padding:13px 14px;background:#fff;color:var(--text);outline:none}
    textarea{min-height:110px;resize:vertical}
    .choice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .choice{border:1px solid var(--border);border-radius:16px;padding:14px;background:#fbfaf7;cursor:pointer;display:flex;gap:10px;align-items:center;color:#4c535b}
    .choice input{accent-color:#111}
    .style-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .style-choice{min-height:128px;border:1px solid var(--border);border-radius:18px;overflow:hidden;background:#fbfaf7;cursor:pointer;position:relative;display:flex;align-items:flex-end;padding:12px;color:#333a41}
    .style-choice::before{content:"";position:absolute;inset:0;background:center/cover no-repeat;background-image:url("assets/style-calm-natural.jpg")}
    .style-choice::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0) 38%,rgba(255,255,255,.88))}
    .style-choice input{position:absolute;top:12px;left:12px;z-index:1;accent-color:#111}
    .style-choice span{position:relative;z-index:1;font-size:14px;font-weight:650}
    .style-warm::before{background-image:url("assets/style-warm-enveloping.jpg")}
    .style-bright::before{background-image:url("assets/style-bright-open.jpg")}
    .style-clean::before{background-image:url("assets/style-restrained-tidy.jpg")}
    .demo-submit{margin-top:26px;display:flex;gap:14px;align-items:center;flex-wrap:wrap}
    .success{display:none;color:var(--green);background:var(--green-bg);border-radius:999px;padding:8px 12px;font-size:14px}
    .success.show{display:inline-flex}

    .result-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:28px;align-items:start;margin-top:34px}
    .result-meta{display:grid;gap:10px;margin-top:24px;color:#4c535b;font-size:14px}
    .result-meta span{border-top:1px solid var(--border);padding-top:10px}
    .result-stack{display:grid;gap:18px}
    .result-card{background:white;border:1px solid var(--border);border-radius:28px;padding:30px;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .result-card h2{font-size:26px;letter-spacing:-.04em;margin:0 0 14px}
    .result-card p{margin:0;color:var(--muted);font-size:16px}
    .result-card-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:4px}
    .result-summary p{font-size:18px;color:#4c535b}
    .tag-list{display:flex;gap:10px;flex-wrap:wrap}
    .tag{border:1px solid var(--border);border-radius:999px;background:#fbfaf7;padding:8px 12px;color:#4c535b;font-size:14px}
    .preference-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .preference-item{border:1px solid var(--border);border-radius:18px;background:#fbfaf7;padding:16px}
    .preference-item span{display:block;color:var(--light);font-size:13px;margin-bottom:8px}
    .preference-item strong{display:block;color:#333a41;font-size:15px;line-height:1.5}
    .advice-list{margin:0;padding-left:1.2em;color:var(--muted)}
    .advice-list li{margin:10px 0}

    .test-panel{display:none}
    #notes,#workflow,#contact,#questionnaire-system,#about-section{scroll-margin-top:110px}
    .visual-strip{padding:0 0 72px;display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch}
    .visual-copy{border:1px solid var(--border);border-radius:28px;background:rgba(255,255,255,.64);padding:34px;display:flex;flex-direction:column;justify-content:space-between;min-height:260px}
    .visual-copy h2{margin:0 0 14px;font-size:34px;line-height:1.16;letter-spacing:-.05em}
    .visual-copy p{margin:0;color:var(--muted);font-size:16px;max-width:520px}
    .image-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .image-card{min-height:122px;border:1px solid var(--border);border-radius:24px;overflow:hidden;background:#fff center/cover no-repeat;position:relative;box-shadow:0 18px 42px rgba(0,0,0,.035)}
    .image-card.large{grid-row:span 2;min-height:260px}
    .image-card::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0) 42%,rgba(20,18,16,.22));pointer-events:none}
    .image-card-worktable{background-image:url("assets/shike-worktable.jpg")}
    .image-card-survey{background:linear-gradient(135deg,#fbfaf7,#e8eee7)}
    .image-card-result{background:linear-gradient(135deg,#f8f5ef,#efe7db)}
    .image-label{position:absolute;left:16px;bottom:14px;background:rgba(255,255,255,.78);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.65);border-radius:999px;padding:5px 10px;font-size:12px;color:#5f656c}
    .mini-phone{position:absolute;left:50%;top:14px;transform:translateX(-50%);width:92px;height:128px;border:6px solid #171717;border-radius:20px;background:#fff;padding:13px 11px;box-shadow:0 22px 40px rgba(0,0,0,.12)}
    .mini-bar{width:24px;height:4px;border-radius:999px;background:#d8d3ca;margin:0 auto 13px}
    .mini-question{height:9px;border-radius:999px;background:#191919;margin-bottom:12px}
    .mini-options{display:grid;grid-template-columns:1fr 1fr;gap:7px}
    .mini-options span{height:22px;border-radius:8px;border:1px solid var(--border);background:#f5f4f1}
    .mini-options span:nth-child(2){background:#dce7de}
    .mini-options span:nth-child(3){background:#e8dccb}
    .mini-report{position:absolute;left:18px;right:18px;top:18px;height:124px;border:1px solid var(--border);border-radius:16px;background:rgba(255,255,255,.86);padding:15px;box-shadow:0 20px 38px rgba(0,0,0,.08)}
    .mini-title{width:50%;height:10px;border-radius:999px;background:#191919;margin-bottom:13px}
    .mini-tags{display:flex;gap:6px;margin-bottom:13px}
    .mini-tags span{width:34px;height:16px;border-radius:999px;background:#eef7f0;border:1px solid #dceadd}
    .mini-tags span:nth-child(2){background:#f1eadf;border-color:#e5dbce}
    .mini-tags span:nth-child(3){background:#f5f4f1;border-color:var(--border)}
    .mini-lines{display:grid;gap:8px}
    .mini-lines span{height:7px;border-radius:999px;background:#dfdad1}
    .mini-lines span:nth-child(2){width:84%}
    .mini-lines span:nth-child(3){width:62%}

    @media(max-width:980px){
      .hero{grid-template-columns:1fr;padding-top:72px}
      .feature-grid{grid-template-columns:1fr}
      .signal-section{grid-template-columns:1fr}
      .questionnaire-section{grid-template-columns:1fr}
      .workflow-grid{grid-template-columns:1fr 1fr}
      .about-box{grid-template-columns:1fr}
      .demo-layout{grid-template-columns:1fr}
      .result-layout{grid-template-columns:1fr}
      .cta-panel{align-items:flex-start;flex-direction:column}
      .cta-actions{justify-content:flex-start}
      .demo-aside{position:static}
      h1{font-size:54px}
    }
    @media(max-width:640px){
      .container{width:min(100% - 32px,1180px)}
      header{padding:18px 0}
      .nav-links{display:none}
      .nav-right{gap:10px}
      .nav-right .button{display:none}
      h1,.subpage h1{font-size:42px}
      .hero p{font-size:18px}
      .workflow-grid,.choice-grid,.preference-grid,.style-grid{grid-template-columns:1fr}
      .quote-box{padding:34px}.quote-box p{font-size:26px}.visual-strip{grid-template-columns:1fr}.image-grid{grid-template-columns:1fr 1fr}.visual-copy{min-height:auto}.preview-thumbs img{height:64px}.cta-panel{padding:28px}.cta-panel h2{font-size:26px}
      .content-card,.demo-form,.about-box,.result-card{padding:26px}
    }