/* ===== Demo Hero ===== */
.demo-hero{background:var(--ink);color:#fff;padding:120px 0 60px;position:relative;overflow:hidden;background-image:url('../images/chat.jpg');background-size:cover;background-position:center}
.demo-hero::before{content:'';position:absolute;inset:0;background:rgba(10,10,15,.82);z-index:1}
.demo-hero .demo-glow-1,.demo-hero .demo-glow-2{z-index:1}

/* 管理画面ボタン（目立つ） */
.btn-accent-glow{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--orange),#ff6b2b);color:#fff;padding:16px 32px;border-radius:100px;font-size:15px;font-weight:700;text-decoration:none;transition:all .3s;box-shadow:0 4px 24px rgba(255,107,43,.4);position:relative;overflow:hidden}
.btn-accent-glow:hover{transform:translateY(-2px);box-shadow:0 8px 32px rgba(255,107,43,.55)}
.demo-glow-1{position:absolute;top:-20%;right:-10%;width:700px;height:700px;background:radial-gradient(circle,rgba(0,102,255,.15) 0%,transparent 70%);pointer-events:none}
.demo-glow-2{position:absolute;bottom:-20%;left:-5%;width:500px;height:500px;background:radial-gradient(circle,rgba(255,107,43,.08) 0%,transparent 70%);pointer-events:none}
.demo-hero .container{position:relative;z-index:2;padding-top:24px;padding-bottom:40px}
.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}

/* Left column */
.demo-label{font-family:var(--font-en);font-size:12px;font-weight:700;letter-spacing:4px;text-transform:uppercase;color:var(--green);margin-bottom:16px}
.demo-hero h1{font-size:clamp(28px,4vw,44px);font-weight:900;line-height:1.3;margin-bottom:20px;letter-spacing:-.5px}
.demo-sub{font-size:15px;color:rgba(255,255,255,.55);line-height:2;margin-bottom:40px;max-width:520px}

/* Demo Points */
.demo-points{display:flex;flex-direction:column;gap:20px;margin-bottom:48px}
.demo-point{display:flex;align-items:flex-start;gap:16px}
.demo-point-icon{width:40px;height:40px;border-radius:10px;background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.demo-point h4{font-size:14px;font-weight:700;margin-bottom:2px}
.demo-point p{font-size:13px;color:rgba(255,255,255,.45);line-height:1.6}

/* Example Questions */
.demo-examples{border-top:1px solid rgba(255,255,255,.1);padding-top:32px}
.demo-examples h3{font-size:15px;font-weight:700;margin-bottom:16px;color:rgba(255,255,255,.8)}
.demo-example-list{display:flex;flex-wrap:wrap;gap:10px}
.demo-example-btn{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.75);border-radius:100px;padding:10px 20px;font-family:var(--font-jp);font-size:13px;cursor:pointer;transition:all .3s;white-space:nowrap}
.demo-example-btn:hover{background:rgba(0,102,255,.2);border-color:var(--accent);color:#fff;transform:translateY(-2px)}

/* Right column - Chat pointer */
.demo-chat-area{display:flex;align-items:center;justify-content:center;min-height:400px}
.demo-chat-pointer{text-align:center}
.demo-pointer-arrow{margin-bottom:16px;animation:demo-bounce 2s ease-in-out infinite}
.demo-chat-pointer p{font-size:15px;color:rgba(255,255,255,.5);line-height:1.8}

@keyframes demo-bounce{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(12px) translateX(12px)}}

.hero-actions{display:flex;gap:16px;flex-wrap:wrap}

/* ===== Problem → Solution ===== */
.solution-section{background:var(--gray-100)}
.solution-card{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:32px;border-radius:var(--radius);overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.solution-problem{background:#fff;padding:40px 36px;border-left:4px solid var(--orange)}
.solution-problem h3{font-size:20px;font-weight:900;line-height:1.5;margin-bottom:12px;color:var(--ink)}
.solution-problem p{font-size:14px;color:var(--gray-600);line-height:2}
.solution-problem-label{display:inline-block;font-size:11px;font-weight:700;padding:4px 14px;border-radius:100px;background:rgba(255,107,43,.1);color:var(--orange);margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}
.solution-answer{background:var(--ink);padding:40px 36px;color:#fff}
.solution-answer h3{font-size:20px;font-weight:900;line-height:1.5;margin-bottom:12px}
.solution-answer p{font-size:14px;color:rgba(255,255,255,.7);line-height:2}
.solution-answer-label{display:inline-block;font-size:11px;font-weight:700;padding:4px 14px;border-radius:100px;background:rgba(0,194,122,.15);color:var(--green);margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}

/* ===== Screenshot Placeholder ===== */
.screenshot-placeholder{margin-top:20px;position:relative}
.screenshot-placeholder::after{content:attr(data-caption);display:block;font-size:12px;color:rgba(255,255,255,.4);margin-top:8px;text-align:center}
.screenshot-mock{background:#1a1a22;border:1px solid rgba(255,255,255,.1);border-radius:8px;overflow:hidden}
.screenshot-mock-bar{display:flex;gap:6px;padding:10px 14px;background:rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.06)}
.screenshot-mock-bar span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.12)}
.screenshot-mock-bar span:first-child{background:rgba(255,107,43,.5)}
.screenshot-mock-bar span:nth-child(2){background:rgba(255,199,0,.4)}
.screenshot-mock-bar span:nth-child(3){background:rgba(0,194,122,.4)}
.screenshot-mock-body{display:flex;min-height:160px}
.screenshot-mock-sidebar{width:48px;background:rgba(255,255,255,.03);border-right:1px solid rgba(255,255,255,.06)}
.screenshot-mock-content{flex:1;display:flex;align-items:center;justify-content:center;padding:24px}
.screenshot-mock-text{font-size:13px;color:rgba(255,255,255,.3);text-align:center}

/* Large screenshot placeholder */
.screenshot-placeholder-lg{margin-top:40px}
.screenshot-mock-lg .screenshot-mock-body{min-height:280px}
.screenshot-placeholder-lg::after{color:var(--gray-400)}

/* Solution section placeholders (inside dark bg) */
.solution-section .screenshot-placeholder::after{color:rgba(255,255,255,.4)}

/* Admin section placeholders (inside light bg) */
.admin-section .screenshot-placeholder .screenshot-mock{background:#f0f0ee;border-color:var(--gray-200)}
.admin-section .screenshot-placeholder .screenshot-mock-bar{background:var(--gray-100);border-bottom-color:var(--gray-200)}
.admin-section .screenshot-placeholder .screenshot-mock-bar span{background:var(--gray-300)}
.admin-section .screenshot-placeholder .screenshot-mock-bar span:first-child{background:rgba(255,107,43,.6)}
.admin-section .screenshot-placeholder .screenshot-mock-bar span:nth-child(2){background:rgba(255,199,0,.5)}
.admin-section .screenshot-placeholder .screenshot-mock-bar span:nth-child(3){background:rgba(0,194,122,.5)}
.admin-section .screenshot-placeholder .screenshot-mock-sidebar{background:var(--gray-100);border-right-color:var(--gray-200)}
.admin-section .screenshot-placeholder .screenshot-mock-text{color:var(--gray-400)}
.admin-section .screenshot-placeholder-lg::after{color:var(--gray-400)}

/* ===== Screenshot Thumbnail (clickable) ===== */
.screenshot-thumb{position:relative;cursor:pointer;border-radius:8px;overflow:hidden;border:1px solid rgba(255,255,255,.1);transition:all .3s}
.screenshot-thumb:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.screenshot-thumb img{width:100%;height:auto;display:block;transition:filter .3s}
.screenshot-thumb:hover img{filter:brightness(.85)}
.screenshot-zoom-icon{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.7));color:rgba(255,255,255,.8);font-size:12px;padding:16px 12px 10px;text-align:center;opacity:0;transition:opacity .3s}
.screenshot-thumb:hover .screenshot-zoom-icon{opacity:1}

/* Admin section variant (light bg) */
.admin-section .screenshot-thumb{border-color:var(--gray-200)}
.admin-section .screenshot-thumb:hover{box-shadow:0 8px 24px rgba(0,0,0,.1)}

/* ===== Lightbox Modal ===== */
.lightbox-overlay{position:fixed;inset:0;z-index:99999;background:rgba(0,0,0,.88);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;padding:32px}
.lightbox-overlay.active{opacity:1;visibility:visible}
.lightbox-close{position:absolute;top:20px;right:28px;background:none;border:none;color:#fff;font-size:36px;cursor:pointer;z-index:2;line-height:1;padding:8px;transition:opacity .2s}
.lightbox-close:hover{opacity:.7}
.lightbox-content{max-width:90vw;max-height:85vh;text-align:center}
.lightbox-content img{max-width:100%;max-height:80vh;border-radius:8px;box-shadow:0 16px 64px rgba(0,0,0,.4);object-fit:contain}
.lightbox-caption{color:rgba(255,255,255,.6);font-size:13px;margin-top:16px}

/* ===== Admin Dashboard Section ===== */
.admin-section{background:var(--white)}
.admin-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.admin-card{background:var(--gray-100);border-radius:var(--radius);padding:32px 28px;transition:all .3s}
.admin-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.06)}
.admin-card-icon{width:48px;height:48px;border-radius:12px;background:rgba(0,102,255,.08);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.admin-card h3{font-size:17px;font-weight:900;margin-bottom:10px;line-height:1.5}
.admin-card p{font-size:14px;color:var(--gray-600);line-height:2}

/* ===== How it works ===== */
.how-section{background:var(--white)}
.how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:48px;align-items:center}
.how-diagram{background:var(--ink);border-radius:var(--radius);padding:48px 40px;color:#fff}
.how-flow{display:flex;flex-direction:column;gap:0}
.how-step{display:flex;align-items:center;gap:20px;padding:20px 0;position:relative}
.how-step:not(:last-child)::after{content:'';position:absolute;left:20px;top:60px;bottom:-20px;width:2px;background:rgba(255,255,255,.1)}
.how-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;position:relative;z-index:1}
.how-icon.user{background:rgba(0,102,255,.2)}
.how-icon.server{background:rgba(255,107,43,.2)}
.how-icon.ai{background:rgba(0,194,122,.2)}
.how-icon.data{background:rgba(157,78,221,.2)}
.how-step-text h4{font-size:14px;font-weight:700;margin-bottom:2px}
.how-step-text p{font-size:12px;color:rgba(255,255,255,.7);line-height:1.6}
.how-desc h3{font-size:24px;font-weight:900;margin-bottom:20px;line-height:1.4}
.how-desc p{font-size:15px;color:var(--gray-600);line-height:2;margin-bottom:16px}
.how-data-box{background:var(--gray-100);border-radius:12px;padding:24px;margin-top:24px}
.how-data-box h4{font-size:15px;font-weight:900;margin-bottom:12px}
.how-data-list{display:flex;flex-direction:column;gap:8px}
.how-data-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--gray-600);line-height:1.7}
.how-data-item::before{content:'';flex-shrink:0;margin-top:2px}

/* ===== Comparison ===== */
.vs-section{background:var(--ink);color:#fff}
.vs-table-wrap{overflow-x:auto;margin-top:48px}
.vs-table{width:100%;border-collapse:collapse;min-width:600px}
.vs-table th{padding:18px 16px;font-size:13px;font-weight:700;text-align:center;border-bottom:2px solid rgba(255,255,255,.1)}
.vs-table th:first-child{text-align:left}
.vs-table th.hub{color:var(--accent-light)}
.vs-table td{padding:16px;font-size:14px;text-align:center;border-bottom:1px solid rgba(255,255,255,.06);color:rgba(255,255,255,.6)}
.vs-table td:first-child{text-align:left;font-weight:700;color:rgba(255,255,255,.7);font-size:13px}
.vs-table td.hub{color:var(--orange);font-weight:700;background:rgba(255,107,43,.04)}
.vs-table td.dim{color:rgba(255,255,255,.7)}

/* ===== Plans ===== */
.plan-section{background:var(--gray-100)}
.plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:32px}
.plan-card{background:#fff;border-radius:var(--radius);padding:40px 32px;position:relative;transition:all .3s}
.plan-card:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(0,0,0,.08)}
.plan-card.featured{background:var(--ink);color:#fff}
.plan-card.featured .plan-price-label,.plan-card.featured .plan-feature{color:rgba(255,255,255,.7)}
.plan-card.featured .plan-feature::before{background:var(--accent-light)}
.plan-popular{position:absolute;top:-12px;right:24px;background:var(--orange);color:#fff;font-size:11px;font-weight:700;padding:6px 16px;border-radius:100px}
.plan-name{font-size:13px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:12px;font-family:var(--font-en)}
.plan-card.featured .plan-name{color:var(--accent-light)}
.plan-price{font-family:var(--font-en);font-size:44px;font-weight:700;line-height:1;margin-bottom:4px}
.plan-price small{font-size:16px;font-weight:400}
.plan-price-label{font-size:13px;color:var(--gray-400);margin-bottom:24px}
.plan-features{list-style:none;display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.plan-feature{font-size:14px;color:var(--gray-600);display:flex;align-items:flex-start;gap:10px;line-height:1.6}
.plan-feature::before{content:'';width:20px;height:20px;background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;margin-top:2px}
.btn-plan{display:block;text-align:center;padding:14px 24px;border-radius:100px;font-weight:500;font-size:14px;text-decoration:none;transition:all .3s}
.btn-plan-default{background:var(--gray-100);color:var(--ink)}
.btn-plan-default:hover{background:var(--gray-200)}
.btn-plan-primary{background:var(--accent);color:#fff}
.btn-plan-primary:hover{box-shadow:0 8px 24px rgba(0,102,255,.4);transform:translateY(-2px)}
.plan-note{text-align:center;font-size:14px;color:var(--gray-600);line-height:1.9;margin-top:16px}
.plan-note strong{color:var(--ink)}

/* ===== Initial Cost ===== */
.initial-section{background:var(--white)}
.initial-box{background:var(--ink);border-radius:var(--radius);padding:48px;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.initial-price{font-family:var(--font-en);font-size:clamp(48px,6vw,72px);font-weight:700;line-height:1}
.initial-price small{font-size:20px;font-weight:400;color:rgba(255,255,255,.7);display:block;margin-top:8px}
.initial-includes h3{font-size:18px;font-weight:900;margin-bottom:16px}
.initial-list{display:flex;flex-direction:column;gap:10px}
.initial-list li{font-size:14px;color:rgba(255,255,255,.7);display:flex;align-items:flex-start;gap:10px;line-height:1.7;list-style:none}
.initial-list li::before{content:'';width:18px;height:18px;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;flex-shrink:0;margin-top:3px}

/* ===== Flow ===== */
.flow-section{background:var(--gray-100)}
.flow-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0;margin-top:48px}
.flow-step{padding:32px 28px;text-align:center;position:relative;background:var(--ink);color:#fff}
.flow-step:first-child{border-radius:var(--radius) 0 0 var(--radius)}
.flow-step:last-child{border-radius:0 var(--radius) var(--radius) 0}
.flow-step::after{content:'';position:absolute;right:-12px;top:50%;transform:translateY(-50%);font-size:18px;color:var(--accent-light);z-index:2;font-family:var(--font-en)}
.flow-step:last-child::after{display:none}
.flow-num{font-family:var(--font-en);font-size:11px;font-weight:700;color:var(--accent-light);letter-spacing:2px;margin-bottom:8px}
.flow-step h4{font-size:15px;font-weight:700;margin-bottom:4px}
.flow-step p{font-size:12px;color:rgba(255,255,255,.7);line-height:1.6}
.flow-timeline{margin-top:24px;text-align:center;font-size:14px;color:var(--gray-600)}
.flow-timeline strong{color:var(--accent)}

/* ===== Environment ===== */
.env-section{background:var(--white)}
.env-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.env-card{border-radius:var(--radius);padding:36px 32px;border:2px solid var(--gray-200);transition:all .3s}
.env-card:hover{border-color:var(--accent);box-shadow:0 8px 32px rgba(0,102,255,.08)}
.env-card.ok{border-color:var(--green)}
.env-badge{display:inline-block;font-size:11px;font-weight:700;padding:4px 12px;border-radius:100px;margin-bottom:16px}
.env-card.ok .env-badge{background:rgba(0,194,122,.1);color:var(--green)}
.env-card.neutral .env-badge{background:rgba(0,102,255,.1);color:var(--accent)}
.env-card h3{font-size:17px;font-weight:700;margin-bottom:8px}
.env-card p{font-size:13px;color:var(--gray-600);line-height:1.8}
.env-list{margin-top:12px;display:flex;flex-direction:column;gap:6px}
.env-list-item{font-size:13px;color:var(--gray-600);display:flex;align-items:center;gap:8px}
.env-list-item::before{content:'';color:var(--accent);font-weight:700}

/* ===== Deployment Checker ===== */
.dc-section{background:var(--white)}
.dc-box{max-width:680px;margin:48px auto 0;background:var(--gray-100);border-radius:var(--radius);padding:40px 36px}
.dc-label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:8px}
.dc-input-row{display:flex;gap:12px}
.dc-input{flex:1;padding:14px 18px;border:2px solid var(--gray-200);border-radius:12px;font-family:var(--font-en);font-size:14px;color:var(--ink);background:#fff;transition:border-color .3s;outline:none}
.dc-input:focus{border-color:var(--accent)}
.dc-input::placeholder{color:var(--gray-400)}
.dc-btn{white-space:nowrap;padding:14px 28px;flex-shrink:0;border-radius:100px;background:var(--accent);color:#fff;border:none;font-size:14px;font-weight:700;font-family:var(--font-jp);cursor:pointer;transition:all .3s}
.dc-btn:hover{box-shadow:0 8px 24px rgba(0,102,255,.4);transform:translateY(-2px)}
.dc-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.dc-hint{font-size:12px;color:var(--gray-400);margin-top:8px}

/* Progress */
.dc-progress{height:4px;background:var(--gray-200);border-radius:2px;margin:28px 0 24px;overflow:hidden}
.dc-progress-bar{height:100%;width:0;background:var(--accent);border-radius:2px;transition:width .4s ease}

/* Check list */
.dc-check-list{display:flex;flex-direction:column;gap:12px}
.dc-check{display:flex;align-items:flex-start;gap:14px;padding:16px;border-radius:12px;background:#fff;transition:all .3s}
.dc-check-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:14px;font-weight:700;transition:all .3s}
.dc-check--pending .dc-check-icon{background:var(--gray-200);color:var(--gray-400)}
.dc-check--running .dc-check-icon{background:rgba(0,102,255,.1);color:var(--accent);animation:dc-spin 1s linear infinite}
.dc-check--ok .dc-check-icon{background:rgba(0,194,122,.12);color:var(--green)}
.dc-check--fail .dc-check-icon{background:rgba(255,107,43,.1);color:var(--orange)}
.dc-check--warn .dc-check-icon{background:rgba(255,199,0,.15);color:#cc9900}
@keyframes dc-spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.dc-check-label{display:block;font-size:14px;font-weight:700;color:var(--ink);margin-bottom:2px}
.dc-check-detail{display:block;font-size:12px;color:var(--gray-600);line-height:1.7}
.dc-check--ok .dc-check-detail{color:var(--green)}
.dc-check--fail .dc-check-detail{color:var(--orange)}

/* Summary */
.dc-summary{margin-top:24px;padding:20px 24px;border-radius:12px;font-size:14px;line-height:1.8}
.dc-summary.success{background:rgba(0,194,122,.08);border:2px solid var(--green);color:var(--ink)}
.dc-summary.failure{background:rgba(255,107,43,.06);border:2px solid var(--orange);color:var(--ink)}
.dc-summary-title{font-size:16px;font-weight:900;margin-bottom:4px}
.dc-summary.success .dc-summary-title{color:var(--green)}
.dc-summary.failure .dc-summary-title{color:var(--orange)}
.dc-summary a{color:var(--accent);text-decoration:underline}

/* DC Steps layout */
.dc-steps{max-width:800px;margin:48px auto 0;display:flex;flex-direction:column;gap:24px}
.dc-step-card{background:var(--gray-100);border-radius:var(--radius);padding:36px 32px;position:relative}
.dc-step-badge{display:inline-block;font-family:var(--font-en);font-size:11px;font-weight:700;color:var(--accent);background:rgba(0,102,255,.08);padding:4px 14px;border-radius:100px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.dc-step-title{font-size:18px;font-weight:900;color:var(--ink);margin-bottom:8px}
.dc-step-desc{font-size:14px;color:var(--gray-600);line-height:1.8;margin-bottom:24px}

.dc-download-area{display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.dc-download-btn{padding:14px 32px;border-radius:100px;background:var(--accent);color:#fff;border:none;font-size:15px;font-weight:700;font-family:var(--font-jp);cursor:pointer;transition:all .3s;display:inline-flex;align-items:center;gap:8px}
.dc-download-btn::before{content:'\2913';font-size:18px}
.dc-download-btn:hover{box-shadow:0 8px 24px rgba(0,102,255,.4);transform:translateY(-2px)}
.dc-download-meta{font-size:12px;color:var(--gray-400)}

.dc-howto{display:flex;align-items:flex-start;gap:12px;flex-wrap:wrap}
.dc-howto-step{display:flex;align-items:flex-start;gap:10px;flex:1;min-width:140px}
.dc-howto-num{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.dc-howto-step strong{font-size:13px;color:var(--ink)}
.dc-howto-step small{font-size:11px;color:var(--gray-500);line-height:1.5}
.dc-howto-arrow{color:var(--gray-300);font-size:18px;align-self:center;flex-shrink:0;margin-top:-4px}

.dc-step-card .dc-box{background:#fff;border-radius:16px;padding:28px 24px;margin:0}

@media(max-width:768px){
  .dc-step-card{padding:24px 20px}
  .dc-howto{flex-direction:column;gap:16px}
  .dc-howto-arrow{display:none}
  .dc-download-area{flex-direction:column;align-items:flex-start}
}

/* ===== Checker Download Modal ===== */
.cdl-overlay{position:fixed;inset:0;z-index:9999;background:rgba(10,10,15,.6);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:opacity .3s}
.cdl-overlay.active{opacity:1;pointer-events:auto}
.cdl-modal{background:#fff;border-radius:20px;padding:40px 36px;max-width:460px;width:100%;position:relative;transform:translateY(20px) scale(.97);transition:transform .3s;box-shadow:0 24px 64px rgba(0,0,0,.15)}
.cdl-overlay.active .cdl-modal{transform:translateY(0) scale(1)}
.cdl-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;border:none;background:var(--gray-100);font-size:20px;color:var(--gray-500);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}
.cdl-close:hover{background:var(--gray-200);color:var(--ink)}
.cdl-title{font-size:20px;font-weight:900;color:var(--ink);margin-bottom:8px}
.cdl-desc{font-size:14px;color:var(--gray-500);margin-bottom:28px;line-height:1.7}
.cdl-field{margin-bottom:20px}
.cdl-label{display:block;font-size:13px;font-weight:700;color:var(--ink);margin-bottom:6px}
.cdl-req{font-size:11px;color:var(--orange);font-weight:700;margin-left:4px}
.cdl-input{width:100%;padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:10px;font-size:15px;font-family:var(--font-jp);color:var(--ink);background:#fff;transition:border-color .2s;box-sizing:border-box}
.cdl-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(0,102,255,.1)}
.cdl-input::placeholder{color:var(--gray-300)}
.cdl-error{background:rgba(239,68,68,.08);color:#dc2626;font-size:13px;padding:10px 14px;border-radius:8px;margin-bottom:16px;line-height:1.6}
.cdl-submit{width:100%;padding:14px;border:none;border-radius:100px;background:var(--accent);color:#fff;font-size:15px;font-weight:700;font-family:var(--font-jp);cursor:pointer;transition:all .3s;margin-top:8px}
.cdl-submit:hover{box-shadow:0 8px 24px rgba(0,102,255,.4);transform:translateY(-1px)}
.cdl-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}

@media(max-width:480px){
  .cdl-modal{padding:28px 20px;border-radius:16px}
  .cdl-title{font-size:18px}
}

/* ===== FAQ ===== */
.faq-section{background:var(--gray-100)}
.faq-list{max-width:800px;margin:48px auto 0}
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq-q{padding:20px 24px;font-size:15px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:background .2s}
.faq-q:hover{background:var(--gray-100)}
.faq-q::after{content:'+';font-family:var(--font-en);font-size:20px;color:var(--accent);flex-shrink:0;transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-item.open .faq-a{max-height:400px}
.faq-a-inner{padding:0 24px 20px;font-size:14px;color:var(--gray-600);line-height:2}

/* ===== AI Consulting Cycle ===== */
.consult-section{background:var(--white)}
.consult-cycle{display:flex;align-items:center;justify-content:center;gap:8px;margin:48px 0 20px;flex-wrap:wrap}
.consult-step{background:var(--gray-100);border-radius:var(--radius);padding:28px 20px;text-align:center;flex:1;min-width:180px;max-width:220px;transition:all .3s}
.consult-step:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.06)}
.consult-step-num{font-family:var(--font-en);font-size:11px;font-weight:700;color:var(--accent);letter-spacing:2px;margin-bottom:8px}
.consult-step-icon{font-size:32px;margin-bottom:12px}
.consult-step h4{font-size:14px;font-weight:900;margin-bottom:6px}
.consult-step p{font-size:12px;color:var(--gray-600);line-height:1.7}
.consult-arrow{color:var(--accent);flex-shrink:0;display:flex;align-items:center}
.consult-cycle-note{text-align:center;font-size:14px;color:var(--gray-600);margin-top:16px;line-height:1.8}
.consult-features{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.consult-card{background:var(--ink);border-radius:var(--radius);padding:32px 24px;color:#fff;transition:all .3s}
.consult-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.15)}
.consult-card-icon{font-size:28px;margin-bottom:16px}
.consult-card h3{font-size:16px;font-weight:900;margin-bottom:10px}
.consult-card p{font-size:13px;color:rgba(255,255,255,.65);line-height:1.9}

/* ===== Auto FAQ Generation ===== */
.autofaq-section{background:var(--gray-100)}
.autofaq-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.autofaq-step{background:#fff;border-radius:var(--radius);padding:36px 28px;text-align:center;transition:all .3s}
.autofaq-step:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.06)}
.autofaq-step-num{font-family:var(--font-en);font-size:11px;font-weight:700;letter-spacing:2px;color:var(--accent);margin-bottom:12px}
.autofaq-step-icon{font-size:36px;margin-bottom:16px}
.autofaq-step h4{font-size:16px;font-weight:900;margin-bottom:10px}
.autofaq-step p{font-size:13px;color:var(--gray-600);line-height:1.9;text-align:left}

/* ===== LINE Integration ===== */
.line-section{background:var(--white)}
.line-modes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.line-mode{background:var(--gray-100);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:all .3s}
.line-mode:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.06)}
.line-mode-icon{font-size:36px;margin-bottom:16px}
.line-mode h4{font-size:16px;font-weight:900;margin-bottom:10px}
.line-mode p{font-size:13px;color:var(--gray-600);line-height:1.9;text-align:left}

/* ===== Use Cases ===== */
.usecase-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
.usecase-card{background:#fff;border-radius:var(--radius);padding:36px 32px;transition:all .3s}
.usecase-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(0,0,0,.06)}
.usecase-icon{font-size:36px;margin-bottom:16px}
.usecase-card h3{font-size:17px;font-weight:900;margin-bottom:12px}
.usecase-card p{font-size:14px;color:var(--gray-600);line-height:2}

/* ===== 3-Column Plan Grid ===== */
.plan-grid-3col{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:16px}
.plan-pages{font-size:13px;color:var(--gray-400);margin-bottom:8px;font-weight:500}
.plan-card.featured .plan-pages{color:rgba(255,255,255,.5)}
.plan-installment{font-size:14px;color:var(--accent);font-weight:700;margin-bottom:20px}
.plan-installment span{font-family:var(--font-en);font-size:18px}
.plan-card.featured .plan-installment{color:var(--accent-light)}
.btn-plan-secondary{background:var(--gray-100);color:var(--ink)}
.btn-plan-secondary:hover{background:var(--gray-200);transform:translateY(-2px)}
.plan-common-note{text-align:center;font-size:13px;color:var(--gray-600);background:rgba(0,194,122,.08);border-radius:100px;padding:10px 24px;display:inline-block;margin:0 auto 16px;width:fit-content;display:block;max-width:700px;margin-left:auto;margin-right:auto}

/* ===== Admin Grid 12 cards ===== */
.admin-grid-12{grid-template-columns:repeat(3,1fr)}

/* ===== Trust Strip ===== */
.trust-strip{background:var(--gray-100);padding:16px 0}
.trust-strip-inner{display:flex;justify-content:center;gap:24px;flex-wrap:wrap}
.trust-badge{font-size:13px;font-weight:500;color:var(--gray-600);display:flex;align-items:center;gap:8px}
.trust-badge::before{content:'';width:20px;height:20px;background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0}

/* ===== Responsive ===== */
@media(max-width:768px){
  /* Demo Hero responsive */
  .demo-hero{padding:80px 0 40px}
  .demo-hero .container{padding-top:16px;padding-bottom:32px}
  .demo-grid{grid-template-columns:1fr;gap:24px}
  .demo-chat-area{min-height:auto;padding:16px 0}
  .demo-chat-pointer p{font-size:14px}
  .demo-pointer-arrow{transform:rotate(90deg)}
  .demo-example-btn{font-size:12px;padding:8px 16px;white-space:normal}
  .demo-hero h1{font-size:24px;margin-bottom:12px}
  .demo-sub{font-size:13px;margin-bottom:20px;line-height:1.8}
  .demo-label{font-size:11px;margin-bottom:10px}
  .demo-points{gap:14px;margin-bottom:24px}
  .demo-point-icon{width:36px;height:36px;font-size:16px}
  .demo-point h4{font-size:13px}
  .demo-point p{font-size:12px}
  .demo-examples{padding-top:20px}
  .demo-examples h3{font-size:14px;margin-bottom:12px}
  .demo-glow-1,.demo-glow-2{display:none}
  .how-grid,.env-grid,.initial-box{grid-template-columns:1fr}
  .flow-steps{grid-template-columns:1fr}
  .flow-step{border-radius:0!important}
  .flow-step:first-child{border-radius:var(--radius) var(--radius) 0 0!important}
  .flow-step:last-child{border-radius:0 0 var(--radius) var(--radius)!important}
  .flow-step::after{content:'';right:auto;left:50%;top:auto;bottom:-12px;transform:translateX(-50%)}
  .vs-table-wrap{margin:48px -24px 0;padding:0 24px}
  .plan-grid{grid-template-columns:1fr}
  .plan-grid-2col{grid-template-columns:1fr!important}
  .initial-box{padding:32px 24px}
  /* Hybrid STEP 1/2/3 */
  .hybrid-steps{grid-template-columns:1fr!important}
  .hybrid-compare{grid-template-columns:1fr!important;padding:24px!important}
  /* Cost Model */
  .cost-detail-grid{grid-template-columns:1fr!important}
  /* Comparison table */
  .vs-table{min-width:500px;font-size:12px}
  .vs-table th,.vs-table td{padding:12px 8px}
  /* Solution cards */
  .solution-card{grid-template-columns:1fr}
  .solution-problem{border-left-width:4px;border-bottom:none}
  .solution-problem,.solution-answer{padding:28px 24px}
  .solution-problem h3,.solution-answer h3{font-size:17px}
  /* Admin grid */
  .admin-grid{grid-template-columns:1fr}
  .admin-grid-12{grid-template-columns:repeat(2,1fr)}
  .admin-card{padding:24px 20px}
  /* AI Consulting */
  .consult-cycle{flex-direction:column;gap:16px}
  .consult-step{max-width:100%;width:100%}
  .consult-arrow{transform:rotate(90deg)}
  .consult-features{grid-template-columns:1fr}
  /* Auto FAQ */
  .autofaq-flow{grid-template-columns:1fr}
  /* LINE */
  .line-modes{grid-template-columns:1fr}
  /* Use Cases */
  .usecase-grid{grid-template-columns:1fr}
  /* 3-col plan */
  .plan-grid-3col{grid-template-columns:1fr}
  /* Screenshot placeholders */
  .screenshot-mock-lg .screenshot-mock-body{min-height:180px}
  .screenshot-mock-body{min-height:120px}
  /* Deployment Checker */
  .dc-box{padding:28px 20px}
  .dc-input-row{flex-direction:column}
  .dc-btn{width:100%}
}