:root{--ink:#071914;--muted:#64736d;--brand:#10b981;--brand2:#34d399;--soft:#eefbf6;--line:#dfe9e5;--panel:#fff;--dark:#061a15;--shadow:0 22px 70px rgba(3,35,26,.12);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;color:var(--ink);background:#fbfdfc;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%}.container{width:min(1160px,calc(100% - 40px));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:20px;top:20px;background:#fff;padding:10px;z-index:99}.site-header{position:sticky;top:0;z-index:30;background:rgba(251,253,252,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,233,229,.8)}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px}.brand span{display:flex;flex-direction:column;line-height:1.08}.brand 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div{display:flex;justify-content:center;flex-wrap:wrap;gap:48px;font-weight:700;color:#576962;font-size:13px}.section{padding:110px 0}.section-heading{max-width:670px;margin-bottom:50px}.section-heading.centered{text-align:center;margin-inline:auto}.section-heading .eyebrow{justify-content:flex-start}.section-heading.centered .eyebrow{justify-content:center}.section h2{font-size:48px;line-height:1.12;letter-spacing:-.04em;margin:15px 0}.section-heading p,.contact-copy p{font-size:17px;color:var(--muted)}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9e7d7}.feature-card .icon{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;color:#07976a;background:#e7fbf3;font-size:24px}.feature-card h3{font-size:20px;margin:22px 0 8px}.feature-card 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label{display:block;font-size:12px;font-weight:800;margin-bottom:14px}.lead-form input,.lead-form select,.lead-form textarea{display:block;width:100%;margin-top:7px;border:1px solid #dbe6e2;background:#f9fbfa;border-radius:11px;padding:12px;font:inherit;font-size:14px;outline:none}.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{border-color:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,.12)}.consent{display:flex!important;gap:8px;align-items:flex-start;font-weight:400!important;color:#63736d}.consent input{width:auto;margin-top:4px}.consent a{color:#05805b;text-decoration:underline}.hp{position:absolute;left:-9999px}.form-message{font-size:12px;margin-bottom:0}.form-message.success{color:#04845e}.form-message.error{color:#dc2626}footer{background:#03100d;color:#d3e1dc;padding:65px 0 22px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:50px}.brand.light strong{color:#fff}.brand.light small{color:#a8c2b8}.footer-grid 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h1{font-size:56px}.mock-window{transform:none}.feature-grid,.pricing-grid{grid-template-columns:1fr 1fr}.price-card.featured{transform:none}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}@media(max-width:680px){.container{width:min(100% - 28px,1160px)}.hero{min-height:auto}.hero-grid{padding:58px 0}.hero h1{font-size:46px}.hero-copy>p{font-size:16px}.hero-actions{flex-direction:column}.hero-actions .button{width:100%}.trust-row{gap:9px 14px}.mock-body{grid-template-columns:42px 1fr;min-height:320px}.mock-content{padding:14px}.metrics{grid-template-columns:1fr}.metrics article:nth-child(n+2){display:none}.feature-grid,.pricing-grid,.field-row,.footer-grid{grid-template-columns:1fr}.section{padding:76px 0}.section h2,.section-dark h2,.contact-copy h2{font-size:37px}.price-card.featured{order:-1}.logo-strip div div{gap:18px}.footer-bottom{flex-direction:column;gap:8px}.footer-grid{gap:28px}}.legal{max-width:820px}.legal h1{font-size:48px}.legal h2{margin-top:35px}.legal p{color:#586b64}.legal-note{margin-top:40px;padding:20px;border-radius:15px;background:#fff7ed;border:1px solid #fed7aa;color:#9a5315;font-size:13px}/* ========================================
   WALKTHROUGH SECTION (Phase 4)
   ======================================== */
.walkthrough-section{padding:110px 0;background:#fbfdfc}.walkthrough-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:start}.walkthrough-visual{position:sticky;top:120px}.walkthrough-screenshot-wrapper{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 30px 80px rgba(3,35,26,.15);background:#fff}.walkthrough-screenshot-wrapper img{display:block;width:100%;height:auto}.screenshot-badge{position:absolute;bottom:16px;left:16px;right:16px;background:rgba(7,25,20,.85);color:#fff;padding:8px 12px;border-radius:8px;font-size:11px;text-align:center;backdrop-filter:blur(8px);opacity:0;transition:opacity .3s}.walkthrough-screenshot-wrapper:hover .screenshot-badge,.screenshot-badge.visible{opacity:1}.walkthrough-nav-dots{display:flex;justify-content:center;gap:10px;margin-top:16px}.nav-dot{width:10px;height:10px;border-radius:50%;background:var(--line);border:0;cursor:pointer;transition:.2s}.nav-dot:hover{background:var(--brand2)}.nav-dot.active{background:var(--brand);transform:scale(1.2);box-shadow:0 0 0 3px rgba(16,185,129,.3)}.walkthrough-steps{padding-right:20px}.progress-line{position:absolute;left:18px;top:0;bottom:0;width:3px;background:var(--line);border-radius:2px}.progress-fill{position:absolute;left:0;top:0;width:100%;height:0;background:var(--brand);border-radius:2px;transition:height .4s ease}.steps-list{list-style:none;padding:0;margin:0;position:relative}.step{position:relative;padding-left:56px;margin-bottom:40px;opacity:.4;transform:translateY(20px);transition:opacity .4s ease,transform .4s ease}.step.active,.step.visible{opacity:1;transform:none}.step-number{position:absolute;left:0;top:4px;width:36px;height:36px;border-radius:50%;background:var(--soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:11px;border:2px solid var(--line)}.step.active .step-number{background:var(--brand);color:#fff;border-color:var(--brand)}.step-content h3{font-size:18px;margin:0 0 6px;color:var(--ink)}.step-content p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.step-screenshot-hint{display:block;margin-top:6px;font-size:11px;color:var(--brand);font-style:italic}@media(max-width:980px){.walkthrough-grid{grid-template-columns:1fr;gap:40px}.walkthrough-visual{position:static}.walkthrough-steps{padding-right:0}.progress-line{display:none}}@media(max-width:680px){.walkthrough-section{padding:76px 0}.step{padding-left:48px;margin-bottom:32px}.step-number{width:28px;height:28px;font-size:10px}}

/* ========================================
   AI DEMO SECTION (Phase 5)
   ======================================== */
.ai-demo-section{padding:110px 0}.ai-demo-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:80px;align-items:center}.ai-demo-copy .eyebrow{justify-content:flex-start}.ai-demo-copy h2{font-size:52px;line-height:1.12;margin:16px 0}.ai-demo-copy p{color:#a7c1b8;font-size:17px}.ai-capabilities{margin-top:34px}.ai-capability{display:flex;gap:16px;padding:19px 0;border-top:1px solid rgba(255,255,255,.1)}.ai-capability b{color:#39d7a1;font-size:12px}.ai-capability span{display:flex;flex-direction:column}.ai-capability strong{font-size:15px}.ai-capability small{color:#91aaa1}.ai-byok{margin-top:40px;padding:24px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:16px}.ai-byok h3{font-size:16px;margin:0 0 12px;color:#fff}.ai-byok p{margin:6px 0;color:#b9d2c9;font-size:13px}.ai-byok p:last-child{font-size:12px;color:#8aa89f;font-style:italic}.ai-demo-visual{display:flex;flex-direction:column;gap:24px}.ai-screenshot-frame{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 40px 100px rgba(0,0,0,.3);background:#041712}.ai-screenshot-frame img{display:block;width:100%;height:auto}.ai-secondary-screenshot{position:relative;border-radius:16px;overflow:hidden;background:#041712}.ai-secondary-screenshot img{display:block;width:100%;height:auto}.ai-secondary-screenshot .screenshot-badge{bottom:40px}.secondary-caption{position:absolute;bottom:12px;left:16px;right:16px;color:#b9d2c9;font-size:11px;text-align:center}@media(max-width:980px){.ai-demo-grid{grid-template-columns:1fr;gap:50px}.ai-demo-copy h2{font-size:44px}.ai-demo-copy .eyebrow{justify-content:center;text-align:center}.ai-capability{justify-content:center;text-align:center}.ai-capability span{align-items:center}}@media(max-width:680px){.ai-demo-section{padding:76px 0}.ai-demo-copy h2{font-size:37px}.ai-screenshot-frame{border-radius:16px}.ai-secondary-screenshot{border-radius:12px}}

/* Respect prefers-reduced-motion */
@media(prefers-reduced-motion:reduce){.step,.nav-dot,.progress-fill,.reveal{transition:none!important;animation:none!important}.step{opacity:1;transform:none}}