:root {
  --bg: #ffffff; --surface: #f6f7f9; --ink: #14141a; --navy: #0B1F3A;
  --body: #3d4249; --muted: #6B7280; --line: #E5E7EB;
  --accent: #2FA6A0; --accent-dark: #073a35;
  --sans: Helvetica, Arial, system-ui, -apple-system, sans-serif;
}

body { font-family: var(--sans); background: var(--bg); color: var(--body); -webkit-font-smoothing: antialiased; letter-spacing: -.01em; margin: 0; }
h1,h2,h3,h4,h5 { color: var(--ink); letter-spacing: -.03em; font-family: var(--sans); }

.site-nav { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.9); backdrop-filter: blur(12px); z-index: 100; }
.site-nav .navbar-brand { font-weight: 800; font-size: 1.25rem; color: var(--ink) !important; letter-spacing: -.03em; text-decoration: none; }
.site-nav .nav-link { color: var(--muted); font-weight: 500; font-size: .95rem; padding: .5rem .9rem !important; }
.site-nav .nav-link:hover, .site-nav .nav-link.active { color: var(--ink) !important; }
.lang-switch { display: inline-flex; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 100px; padding: .2rem; gap: .1rem; }
.lang-switch .lang-opt { color: var(--muted); text-decoration: none; font-size: .76rem; font-weight: 700; letter-spacing: .03em; padding: .35rem .7rem; border-radius: 100px; line-height: 1; transition: background .15s, color .15s; }
.lang-switch .lang-opt:hover { color: var(--ink); }
.lang-switch .lang-opt.active { background: var(--navy); color: #fff; }

.site-footer { border-top: 1px solid var(--line); padding: 2.5rem 0; margin-top: 2rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; color: var(--muted); font-size: .9rem; }

.btn-dark2 { background: var(--navy); color: #fff; border-radius: 6px; padding: .75rem 1.5rem; font-weight: 600; border: 1px solid var(--navy); text-decoration: none; display: inline-block; transition: transform .12s, background .12s; font-size: .95rem; }
.btn-dark2:hover { background: var(--ink); color: #fff; transform: translateY(-1px); }
.btn-light2 { background: #fff; color: var(--ink); border-radius: 6px; padding: .75rem 1.5rem; font-weight: 600; border: 1px solid var(--line); text-decoration: none; display: inline-block; transition: border-color .12s, transform .12s; font-size: .95rem; }
.btn-light2:hover { border-color: var(--ink); color: var(--ink); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff !important; border-radius: 6px; padding: .85rem 1.75rem; font-weight: 700; text-decoration: none; display: inline-block; transition: transform .12s, filter .12s; border: none; font-size: .95rem; cursor: pointer; font-family: var(--sans); }
.btn-accent:hover { filter: brightness(1.08); transform: translateY(-1px); }

.eyebrow { font-size: .8rem; letter-spacing: .02em; font-weight: 700; color: var(--accent); display: inline-flex; align-items: center; gap: .5rem; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

.chip { border: 1px solid var(--line); padding: .55rem 1.1rem; border-radius: 8px; font-size: .94rem; font-weight: 500; color: var(--ink); display: inline-flex; align-items: center; gap: .55rem; background: var(--bg); transition: transform .12s, border-color .12s, box-shadow .12s; text-decoration: none; }
.chip:hover { transform: translateY(-2px); border-color: #d7d9df; box-shadow: 0 6px 16px rgba(20,20,26,.06); }
.chip img { width: 19px; height: 19px; display: block; }
.ic-badge { width: 19px; height: 19px; border-radius: 6px; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: .6rem; font-weight: 700; }

.cta-card { background: var(--navy); border-radius: 8px; padding: 3.5rem 4rem; }

.surface-card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 1.9rem; }

.tag-pill { display: inline-block; background: var(--surface); border: 1px solid var(--line); border-radius: 100px; padding: .3rem .85rem; font-size: .82rem; font-weight: 600; color: var(--body); }
.tag-pill.accent { background: rgba(47,167,161,.1); border-color: rgba(47,167,161,.3); color: var(--accent-dark); }

.page-hero { padding-top: 6rem; padding-bottom: 3.5rem; }

.divider { border: none; border-top: 1px solid var(--line); margin: 3rem 0; }

.cta-card h2 { color: #fff; }

/* ---- Homepage ---- */
.hero-h1 { font-size: clamp(2.8rem,6vw,5.1rem); line-height: 1.04; font-weight: 800; }
.stat { padding: 2rem 0; }
.stat .n { font-size: 3rem; line-height: 1; font-weight: 800; color: var(--ink); letter-spacing: -.04em; }
.stat .n em { color: var(--accent); font-style: normal; }
.svc-card { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 1.9rem; height: 100%; transition: transform .14s, box-shadow .14s, border-color .14s; }
.svc-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(20,20,26,.07); border-color: #d7d9df; }
.svc-card .num { font-size: .85rem; font-weight: 700; color: var(--accent); }
.svc-card .t { font-size: 1.2rem; font-weight: 700; color: var(--ink); margin: .55rem 0 .5rem; letter-spacing: -.02em; }
.svc-card .d { color: var(--muted); line-height: 1.55; font-size: .96rem; }
.step .pn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 6px; background: var(--surface); border: 1px solid var(--line); font-weight: 700; color: var(--ink); margin-bottom: 1rem; }
.step .t { font-size: 1.12rem; font-weight: 700; color: var(--ink); margin-bottom: .4rem; letter-spacing: -.02em; }
.step .d { color: var(--muted); font-size: .95rem; line-height: 1.55; }
.hero-ai-badge { transition: color .12s; }
.hero-ai-badge:hover { color: var(--accent) !important; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }

/* ---- Case study ---- */
.hero-cs { background: var(--ink); color: #fff; padding: 5.5rem 0 4rem; }
.hero-cs h1 { color: #fff; font-size: clamp(2.4rem,5vw,4rem); }
.hero-cs .eyebrow::before { background: var(--accent); }
.meta-box { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 1.5rem 2rem; }
.meta-item .label { font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: rgba(255,255,255,.5); margin-bottom: .3rem; }
.meta-item .value { font-weight: 600; color: #fff; font-size: 1rem; }
.section-cs { padding: 4.5rem 0; }
.challenge-item { display: flex; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.challenge-item:last-child { border-bottom: none; }
.challenge-num { width: 34px; height: 34px; border-radius: 8px; background: rgba(47,167,161,.1); border: 1px solid rgba(47,167,161,.2); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: .9rem; color: var(--accent); flex-shrink: 0; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem; height: 100%; }
.feature-icon { width: 44px; height: 44px; border-radius: 10px; background: rgba(47,167,161,.08); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; }
.feature-icon svg { width: 22px; height: 22px; color: var(--accent); stroke: var(--accent); }
.result-num { font-size: 2.8rem; font-weight: 800; color: var(--accent); letter-spacing: -.04em; line-height: 1; }
.result-label { color: var(--muted); font-size: .92rem; margin-top: .35rem; }
.quote-block { background: var(--surface); border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0; padding: 1.6rem 2rem; font-size: 1.1rem; line-height: 1.65; color: var(--body); font-style: italic; }

/* ---- Blog ---- */
.post-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; height: 100%; transition: transform .14s, box-shadow .14s, border-color .14s; text-decoration: none; display: flex; flex-direction: column; }
.post-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(20,20,26,.07); border-color: #d2d4da; }
.post-card-img { height: 200px; background: var(--surface); display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); }
.post-card-body { padding: 1.6rem; flex: 1; display: flex; flex-direction: column; }
.post-meta { font-size: .82rem; color: var(--muted); font-weight: 500; margin-bottom: .75rem; display: flex; align-items: center; gap: .75rem; }
.post-meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--muted); }
.post-title { font-size: 1.2rem; font-weight: 700; color: var(--ink); letter-spacing: -.02em; line-height: 1.35; margin-bottom: .6rem; }
.post-excerpt { color: var(--muted); font-size: .93rem; line-height: 1.6; flex: 1; }
.post-link { display: inline-flex; align-items: center; gap: .4rem; color: var(--accent); font-weight: 600; font-size: .9rem; margin-top: 1.25rem; text-decoration: none; }
.post-link:hover { color: var(--ink); }
.post-cat { background: rgba(47,167,161,.1); color: var(--accent-dark); border-radius: 100px; padding: .25rem .8rem; font-size: .78rem; font-weight: 700; }
.post-featured { background: #fff; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; transition: transform .14s, box-shadow .14s; text-decoration: none; display: block; }
.post-featured:hover { transform: translateY(-3px); box-shadow: 0 20px 50px rgba(20,20,26,.08); }
.post-featured-img { height: 280px; background: linear-gradient(135deg, rgba(47,167,161,.08) 0%, rgba(20,20,26,.04) 100%); display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--line); }
.ic-post { font-size: 3.5rem; }

/* ---- About ---- */
.avatar-wrap { width: 160px; height: 160px; border-radius: 24px; background: var(--surface); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.avatar-wrap img { width: 70px; height: 70px; }
.timeline-item { display: flex; gap: 1.5rem; padding-bottom: 2.5rem; position: relative; }
.timeline-item::before { content: ""; position: absolute; left: 17px; top: 38px; bottom: 0; width: 2px; background: var(--line); }
.timeline-item:last-child::before { display: none; }
.tl-dot { width: 36px; height: 36px; border-radius: 50%; background: #fff; border: 2px solid var(--line); display: flex; align-items: center; justify-content: center; flex-shrink: 0; z-index: 1; }
.tl-dot.active { border-color: var(--accent); background: rgba(47,167,161,.08); }
.tl-dot.active::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.tl-dot::after { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.tl-year { font-size: .82rem; font-weight: 700; color: var(--muted); margin-bottom: .25rem; letter-spacing: .04em; }
.value-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem; height: 100%; }
.value-ic { width: 40px; height: 40px; border-radius: 10px; background: rgba(47,167,161,.08); border: 1px solid rgba(47,167,161,.15); display: flex; align-items: center; justify-content: center; margin-bottom: 1rem; }
.value-ic svg { width: 20px; height: 20px; stroke: var(--accent); }

/* ---- Pricing ---- */
.pricing-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 2.2rem; height: 100%; display: flex; flex-direction: column; }
.pricing-card.featured { background: var(--ink); border-color: var(--ink); }
.pricing-card.featured h3, .pricing-card.featured .price, .pricing-card.featured .price-unit { color: #fff; }
.pricing-card.featured .pricing-desc, .pricing-card.featured .feat-item { color: rgba(255,255,255,.7); }
.pricing-card.featured .feat-item::before { color: var(--accent); }
.pricing-card.featured .tag-pill { background: rgba(47,167,161,.2); border-color: rgba(47,167,161,.3); color: var(--accent); }
.price { font-size: 3rem; font-weight: 800; color: var(--ink); letter-spacing: -.04em; line-height: 1; }
.price-unit { font-size: 1rem; font-weight: 500; color: var(--muted); }
.pricing-desc { color: var(--muted); font-size: .94rem; line-height: 1.6; margin: 1rem 0 1.5rem; }
.feat-list { list-style: none; padding: 0; margin: 0 0 auto; }
.feat-item { padding: .5rem 0; font-size: .94rem; color: var(--body); display: flex; align-items: flex-start; gap: .6rem; }
.feat-item::before { content: "✓"; font-weight: 800; color: var(--accent); flex-shrink: 0; margin-top: .05rem; }
.feat-item.muted { color: var(--muted); }
.feat-item.muted::before { content: "—"; color: var(--muted); }
.divider-pricing { border-top: 1px solid var(--line); margin: 1.5rem 0; }
.pricing-card.featured .divider-pricing { border-color: rgba(255,255,255,.1); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-btn { width: 100%; text-align: left; background: none; border: none; padding: 1.25rem 0; font-family: var(--sans); font-size: 1rem; font-weight: 600; color: var(--ink); display: flex; justify-content: space-between; align-items: center; cursor: pointer; gap: 1rem; }
.faq-btn:hover { color: var(--accent); }
.faq-arrow { transition: transform .2s; flex-shrink: 0; }
.faq-btn.open .faq-arrow { transform: rotate(180deg); }
.faq-body { display: none; padding-bottom: 1.25rem; color: var(--muted); line-height: 1.65; font-size: .95rem; }
.faq-body.open { display: block; }
.badge-popular { background: var(--accent); color: var(--accent-dark); border-radius: 100px; padding: .25rem .85rem; font-size: .8rem; font-weight: 800; margin-left: .75rem; }

/* ---- Contact ---- */
.form-control, .form-select { border: 1px solid var(--line); border-radius: 10px; padding: .8rem 1rem; font-family: var(--sans); font-size: .95rem; color: var(--ink); background: #fff; transition: border-color .15s, box-shadow .15s; }
.form-control:focus, .form-select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(47,167,161,.15); outline: none; }
.form-label { font-weight: 600; font-size: .9rem; color: var(--ink); margin-bottom: .45rem; }
.contact-item { display: flex; align-items: flex-start; gap: 1rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.contact-item:last-child { border-bottom: none; }
.contact-icon { width: 42px; height: 42px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-icon svg { width: 20px; height: 20px; }
.contact-label { font-size: .82rem; font-weight: 700; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; margin-bottom: .2rem; }
.contact-value { font-weight: 600; color: var(--ink); font-size: 1rem; text-decoration: none; }
.contact-value:hover { color: var(--accent); }
.info-box { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1.6rem; }
textarea.form-control { min-height: 140px; resize: vertical; }