:root {
  --brand: #147fd1;
  --brand-dark: #0d5fa9;
  --teal: #20a5ad;
  --navy: #172b3f;
  --ink: #1b2b38;
  --muted: #667788;
  --surface: #ffffff;
  --soft: #f4f8fb;
  --line: #dfe8ee;
  --warning: #f19145;
  --danger: #cf4b4b;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(22, 52, 78, .09);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; font-size: 15.5px; line-height: 1.64; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-dark); text-decoration: none; }
a:hover { color: var(--brand); }
img { max-width: 100%; }
.icon { width: 24px; height: 24px; display: inline-block; flex: 0 0 auto; }
.site-header { position: sticky; top: 0; z-index: 1030; background: rgba(255,255,255,.96); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(215,228,237,.85); transition: box-shadow .2s ease; }
.site-header.scrolled { box-shadow: 0 10px 30px rgba(17,48,73,.08); }
.site-logo { width: 244px; max-height: 58px; display: block; }
.navbar { min-height: 78px; }
.navbar-nav .nav-link { color: #354656; font-weight: 650; font-size: .95rem; padding: .75rem .85rem !important; border-radius: 10px; }
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active { color: var(--brand-dark); background: #edf7ff; }
.header-search { width: 220px; }
.header-search .form-control { border-radius: 999px 0 0 999px; background: #f5f8fa; border-color: #e2e9ee; font-size: .9rem; }
.header-search .btn { border-radius: 0 999px 999px 0; border-color: #e2e9ee; background: #f5f8fa; color: var(--brand); }
.hero { position: relative; overflow: hidden; background: linear-gradient(145deg,#f5fbff 0%,#f7fffd 100%); }
.hero::before { content:""; position:absolute; inset:0; pointer-events:none; background-image: radial-gradient(circle at 10% 20%,rgba(20,127,209,.08),transparent 24%),radial-gradient(circle at 90% 80%,rgba(32,165,173,.09),transparent 23%); }
.hero-slide { min-height: 500px; display: flex; align-items: center; padding: 54px 0 68px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: .78rem; letter-spacing: .16em; font-weight: 800; color: var(--brand-dark); background: #e9f5ff; border: 1px solid #d3eaff; border-radius: 999px; padding: 8px 13px; margin-bottom: 22px; }
.hero-title { font-size: clamp(2rem, 3.3vw, 3rem); line-height: 1.12; letter-spacing: -.035em; font-weight: 800; max-width: 700px; margin: 0 0 18px; }
.hero-text { font-size: clamp(.96rem, 1.05vw, 1.05rem); color: var(--muted); max-width: 650px; margin-bottom: 26px; }
.hero-art { max-height: 390px; width: 100%; object-fit: contain; filter: saturate(.98); }
.hero .carousel-indicators { bottom: 28px; gap: 7px; }
.hero .carousel-indicators button { width: 9px; height: 9px; border: 0; border-radius: 50%; background: #91a9ba; }
.hero .carousel-indicators button.active { width: 30px; border-radius: 10px; background: var(--brand); }
.btn { font-weight: 700; border-radius: 12px; padding: .72rem 1.1rem; }
.btn-lg { padding: .92rem 1.35rem; }
.btn-primary { background: linear-gradient(135deg,var(--brand),#1596cf); border-color: transparent; box-shadow: 0 10px 22px rgba(20,127,209,.2); }
.btn-primary:hover { background: linear-gradient(135deg,var(--brand-dark),var(--brand)); border-color: transparent; transform: translateY(-1px); }
.btn-outline-primary { border-color: #b7dafa; color: var(--brand-dark); }
.btn-outline-primary:hover { background: #eaf6ff; color: var(--brand-dark); border-color: #8fc7f4; }
.section { padding: 68px 0; }
.section-soft { background: var(--soft); }
.section-heading { max-width: 720px; margin-bottom: 32px; }
.section-kicker { color: var(--brand); font-size: .78rem; letter-spacing: .14em; font-weight: 800; text-transform: uppercase; margin-bottom: 11px; }
.section-title { font-size: clamp(1.55rem, 2.3vw, 2.15rem); letter-spacing: -.025em; font-weight: 800; line-height: 1.2; margin-bottom: 12px; }
.section-lead { color: var(--muted); font-size: .98rem; }
.problem-card, .article-card, .brand-card, .trust-card { height: 100%; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease; }
.problem-card { padding: 25px; display: flex; flex-direction: column; }
.problem-card:hover, .article-card:hover, .brand-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #bcdff4; }
.icon-box { width: 54px; height: 54px; display: inline-flex; align-items: center; justify-content: center; border-radius: 16px; color: var(--brand); background: #eaf6ff; margin-bottom: 18px; }
.icon-box .icon { width: 29px; height: 29px; }
.problem-card h3 { font-size: 1.08rem; font-weight: 780; margin-bottom: 8px; }
.problem-card p { color: var(--muted); font-size: .93rem; margin-bottom: 18px; }
.card-link { margin-top: auto; display: inline-flex; align-items: center; gap: 7px; color: var(--brand-dark); font-weight: 750; font-size: .9rem; }
.card-link .icon { width: 18px; height: 18px; transition: transform .2s; }
.card-link:hover .icon { transform: translateX(4px); }
.diagnostic-shell { position: relative; overflow: hidden; border-radius: 30px; padding: 48px; background: linear-gradient(140deg,#152c42,#0d628e 62%,#14979e); color: #fff; box-shadow: 0 25px 60px rgba(12,62,91,.2); }
.diagnostic-shell::after { content:""; position:absolute; width:320px; height:320px; border-radius:50%; right:-130px; top:-130px; background:rgba(255,255,255,.08); }
.diagnostic-shell .form-label { color: #e7f6ff; font-weight: 700; }
.diagnostic-shell .form-select { min-height: 52px; border-radius: 13px; border: 1px solid rgba(255,255,255,.18); }
.diagnostic-result { display:none; background:rgba(255,255,255,.97); color:var(--ink); border-radius:18px; padding:24px; margin-top:24px; position:relative; z-index:2; }
.diagnostic-result.show { display:block; animation:fadeUp .28s ease; }
.severity { display:inline-flex; font-size:.72rem; font-weight:800; letter-spacing:.08em; text-transform:uppercase; padding:6px 10px; border-radius:999px; margin-bottom:10px; }
.severity-low { background:#e8f7ef; color:#257248; }.severity-medium { background:#fff3df; color:#926017; }.severity-high,.severity-critical { background:#ffe9e7; color:#a53e37; }
.brand-card { padding: 22px; display:flex; align-items:center; gap:14px; color:var(--ink); }
.brand-monogram { width:46px;height:46px;border-radius:14px;background:linear-gradient(145deg,#e9f6ff,#e8fbf8);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;font-weight:850;font-size:1.15rem; }
.brand-card strong { display:block; font-size:1rem; }.brand-card small { color:var(--muted); }
.article-card { overflow:hidden; display:flex; flex-direction:column; }
.article-card-media { height: 205px; background: linear-gradient(145deg,#e8f6ff,#e8faf7); position:relative; overflow:hidden; }
.article-card-media img { width:100%;height:100%;object-fit:cover; }
.article-card-placeholder { height:100%; display:flex; align-items:center; justify-content:center; color:#2c8fc1; }
.article-card-placeholder .icon { width:72px;height:72px;opacity:.5; }
.article-card-body { padding: 24px; display:flex; flex-direction:column; flex:1; }
.article-meta { display:flex; align-items:center; gap:12px; flex-wrap:wrap; font-size:.78rem; color:#738493; margin-bottom:12px; }
.article-meta span { display:inline-flex;align-items:center;gap:5px; }.article-meta .icon { width:15px;height:15px; }
.article-card h3 { font-size:1.18rem; line-height:1.35; font-weight:780; margin-bottom:11px; }
.article-card h3 a { color:var(--ink); }.article-card h3 a:hover { color:var(--brand); }
.article-card p { color:var(--muted); font-size:.92rem; }
.trust-card { padding:30px; }.trust-card h3{font-size:1.1rem;font-weight:780}.trust-card p{color:var(--muted);margin:0}
.faq-wrap .accordion-item { border:1px solid var(--line); border-radius:15px !important; overflow:hidden; margin-bottom:12px; }
.faq-wrap .accordion-button { font-weight:750; padding:20px 22px; box-shadow:none; }.faq-wrap .accordion-button:not(.collapsed){color:var(--brand-dark);background:#edf7ff}.faq-wrap .accordion-body{color:var(--muted);padding:0 22px 22px}
.cta-band { border-radius:28px; padding:44px; background:linear-gradient(135deg,#eaf6ff,#e8fbf6); border:1px solid #d4ebf3; }
.site-footer { background:#132638; color:#c7d4de; padding:64px 0 24px; }.footer-logo{width:220px;filter:brightness(0) invert(1);opacity:.96}.footer-title{color:#fff;font-weight:760;font-size:1rem;margin-bottom:16px}.footer-links{list-style:none;padding:0;margin:0}.footer-links li{margin:8px 0}.footer-links a{color:#bdcbd6}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.11);margin-top:42px;padding-top:22px;font-size:.86rem;color:#92a6b5}
.page-hero { background:linear-gradient(145deg,#f1f9ff,#f4fdfb); padding:48px 0; border-bottom:1px solid var(--line); }.page-hero h1{font-size:clamp(1.7rem,3vw,2.45rem);font-weight:800;letter-spacing:-.03em;line-height:1.15}.page-hero p{color:var(--muted);font-size:.98rem;max-width:740px}.breadcrumb{font-size:.86rem}.breadcrumb a{color:var(--muted)}
.content-layout { padding:52px 0 76px; }.article-main{max-width:830px}.article-body{font-size:1rem;line-height:1.76}.article-body h2{font-size:1.48rem;font-weight:800;letter-spacing:-.018em;margin:2rem 0 .75rem;scroll-margin-top:100px}.article-body h3{font-size:1.18rem;font-weight:780;margin:1.45rem 0 .6rem;scroll-margin-top:100px}.article-body p,.article-body ul,.article-body ol{margin-bottom:1.2rem}.article-body li{margin-bottom:.45rem}.article-body hr{border:0;border-top:1px solid var(--line);opacity:1;margin:2rem 0}.article-body img{border-radius:18px}.article-body table{width:100%;border-collapse:collapse;margin:1.5rem 0}.article-body th,.article-body td{padding:12px;border:1px solid var(--line)}
.article-alert{border-left:4px solid var(--brand);background:#edf7ff;padding:18px 20px;border-radius:0 14px 14px 0;margin:0 0 26px}.article-alert-warning{border-color:var(--warning);background:#fff7ed}.article-meta-large{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;margin:20px 0}.article-meta-large span{display:inline-flex;align-items:center;gap:7px}.article-meta-large .icon{width:18px;height:18px}.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tag-pill{background:#edf5fa;color:#456071;border-radius:999px;padding:6px 11px;font-size:.8rem;font-weight:700}
.toc-card{position:sticky;top:105px;border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff}.toc-card h3{font-size:1rem;font-weight:800}.toc-card ol{padding-left:1.15rem;margin:0}.toc-card li{margin:8px 0;color:#7a8a96;font-size:.85rem}.toc-card a{color:#526a7a}.toc-card a:hover{color:var(--brand)}
.pagination .page-link{border-radius:10px;margin:0 3px;border-color:var(--line);color:var(--brand-dark)}.pagination .active .page-link{background:var(--brand);border-color:var(--brand)}
.contact-card{border:1px solid var(--line);border-radius:22px;padding:30px;background:#fff}.form-control,.form-select{border-color:#d8e3ea;border-radius:11px;padding:.78rem .9rem}.form-control:focus,.form-select:focus{border-color:#83bfea;box-shadow:0 0 0 .22rem rgba(20,127,209,.1)}
.empty-state{text-align:center;padding:70px 20px;border:1px dashed #cbdbe5;border-radius:22px;background:#f9fbfc}.empty-state .icon{width:65px;height:65px;color:#8badc2;margin-bottom:12px}
.installer-body{background:linear-gradient(145deg,#eef8ff,#f0fcf8);min-height:100vh}.installer-card{max-width:840px;background:#fff;border:1px solid var(--line);border-radius:26px;padding:42px;box-shadow:var(--shadow)}.installer-logo{width:270px;max-width:80%}.installer-section-title{font-size:1.05rem;font-weight:800;padding-bottom:10px;border-bottom:1px solid var(--line)}

.requirement-item{min-height:72px;display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:13px;padding:11px 14px;background:#f7fafc}.requirement-icon{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;flex:0 0 auto}.requirement-ok{background:#f2faf6;border-color:#cde8d8}.requirement-ok .requirement-icon{background:#dff3e7;color:#247245}.requirement-error{background:#fff0f1;border-color:#f1b8bd}.requirement-error .requirement-icon{background:#f8d7da;color:#a52834}.requirement-warning{background:#fff9ec;border-color:#f2d89c}.requirement-warning .requirement-icon{background:#ffedbd;color:#87620d}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media (max-width:991.98px){.site-logo{width:205px}.navbar-collapse{padding:14px 0 20px}.header-search{width:100%;margin-top:10px}.hero-slide{min-height:auto;padding:58px 0 76px}.hero-art{max-height:350px;margin-top:24px}.diagnostic-shell{padding:34px}.toc-card{position:static;margin-bottom:28px}.section{padding:70px 0}}
@media (max-width:575.98px){body{font-size:15px}.site-logo{width:185px}.navbar{min-height:68px}.hero-title{font-size:1.95rem}.hero-slide{min-height:auto;padding:38px 0 54px}.hero-text{font-size:1rem}.hero-art{max-height:270px}.section{padding:48px 0}.diagnostic-shell{padding:26px 20px;border-radius:22px}.cta-band{padding:30px 24px}.page-hero{padding:38px 0}.content-layout{padding:44px 0 65px}.article-body{font-size:1rem}.article-body h2{font-size:1.34rem}.installer-card{padding:28px 20px}.article-card-media{height:185px}}

/* v1.0.3: Daha dengeli başlık ölçekleri */
.home h2.section-title,.home h1.hero-title{word-break:normal}
@media (min-width:1200px){.container{max-width:1180px}}