:root{
  --bg:#f6f8f9; --card:#ffffff; --ink:#10211e; --muted:#5b6b67;
  --brand:#0e7c66; --brand-d:#0a5f4e; --accent:#16b893; --warn:#e08a1e; --danger:#d4584a;
  --line:#e4ebe9; --shadow:0 6px 24px rgba(16,40,35,.07); --r:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
a{color:var(--brand-d);text-decoration:none}
/* HEADER */
header{position:sticky;top:0;z-index:50;background:rgba(246,248,249,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink)}
.logo svg{flex:none}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{color:var(--muted);font-weight:600;font-size:15px}
.nav-links a:hover{color:var(--brand-d)}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:11px 20px;border-radius:999px;font-weight:700;font-size:15px;border:none;cursor:pointer;transition:.15s}
.btn:hover{background:var(--brand-d)}
.btn.ghost{background:#fff;color:var(--brand-d);border:1.5px solid var(--line)}
@media(max-width:760px){.nav-links{display:none}}
/* HERO */
.hero{padding:64px 0 48px;background:radial-gradient(900px 380px at 80% -10%,#d8f5ec 0,transparent 60%),radial-gradient(700px 300px at 0% 0%,#e8f3ff 0,transparent 55%)}
.hero h1{font-size:44px;line-height:1.12;letter-spacing:-.5px;margin-bottom:18px;max-width:720px}
.hero h1 span{color:var(--brand)}
.hero p.sub{font-size:19px;color:var(--muted);max-width:600px;margin-bottom:28px}
.hero .cta-row{display:flex;gap:12px;flex-wrap:wrap}
.trust{display:flex;gap:22px;flex-wrap:wrap;margin-top:26px;color:var(--muted);font-size:14px;font-weight:600}
.trust span{display:flex;align-items:center;gap:7px}
@media(max-width:760px){.hero h1{font-size:32px}}
/* SECTION */
section{padding:56px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 36px}
.kicker{color:var(--brand);font-weight:800;letter-spacing:.5px;text-transform:uppercase;font-size:13px}
.sec-head h2{font-size:32px;margin:8px 0 10px;letter-spacing:-.4px}
.sec-head p{color:var(--muted);font-size:17px}
/* TOOL */
#arac{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tool{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start}
@media(max-width:900px){.tool{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}
.addform{display:grid;grid-template-columns:1fr 120px 120px;gap:10px;margin-bottom:8px}
.addform2{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;margin-top:10px}
@media(max-width:560px){.addform,.addform2{grid-template-columns:1fr 1fr}}
label.fld{font-size:12px;font-weight:700;color:var(--muted);display:block;margin-bottom:4px}
input,select{width:100%;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--accent)}
.sub-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.sub-item{display:grid;grid-template-columns:1fr auto auto auto;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fcfdfd}
.sub-item .nm{font-weight:700}
.sub-item .cat{font-size:12px;color:var(--muted)}
.pill{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px}
.pill.sik{background:#e3f6ef;color:#0a5f4e}
.pill.orta{background:#fff3df;color:#9a6212}
.pill.nadir{background:#fce4e0;color:#a83a2c}
.amt{font-weight:800;white-space:nowrap}
.del{background:none;border:none;color:var(--muted);cursor:pointer;font-size:18px;line-height:1;padding:4px}
.del:hover{color:var(--danger)}
.empty{color:var(--muted);text-align:center;padding:26px;border:2px dashed var(--line);border-radius:12px}
/* SUMMARY */
.summary .big{font-size:40px;font-weight:800;color:var(--brand);letter-spacing:-1px}
.summary .row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:15px}
.summary .row:last-child{border:0}
.bars{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.bar-row{font-size:13px}
.bar-track{height:8px;background:#eef3f2;border-radius:99px;overflow:hidden;margin-top:3px}
.bar-fill{height:100%;background:var(--accent);border-radius:99px}
.tip{margin-top:16px;background:#fff8ec;border:1px solid #f3e0bd;border-radius:12px;padding:14px;font-size:14px}
.tip b{color:var(--warn)}
.save-note{margin-top:10px;background:#e9f7f1;border:1px solid #c4e8da;border-radius:12px;padding:14px;font-size:14px}
.save-note b{color:var(--brand-d)}
/* GUIDES */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.grid{grid-template-columns:1fr}}
.acc{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.acc summary{cursor:pointer;padding:16px 18px;font-weight:700;list-style:none;display:flex;justify-content:space-between;align-items:center}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";color:var(--brand);font-size:22px;font-weight:700}
.acc[open] summary::after{content:"–"}
.acc .body{padding:0 18px 16px;color:var(--muted);font-size:14.5px}
.acc .body ol{margin-left:18px}
/* BLOG */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow);transition:.15s}
.card:hover{transform:translateY(-3px)}
.card .tag{font-size:12px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.4px}
.card h3{font-size:18px;margin:8px 0 6px;line-height:1.3}
.card p{color:var(--muted);font-size:14px}
/* FAQ */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
/* CTA band */
.band{background:linear-gradient(120deg,var(--brand) 0,var(--brand-d) 100%);color:#fff;border-radius:24px;padding:48px;text-align:center;margin:0 20px}
.band h2{font-size:30px;margin-bottom:10px}
.band p{opacity:.92;font-size:17px;margin-bottom:22px}
.band .btn{background:#fff;color:var(--brand-d)}
/* FOOTER */
footer{padding:44px 0 30px;color:var(--muted);font-size:14px;border-top:1px solid var(--line);margin-top:40px}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot a{color:var(--muted);margin-right:16px}
.disc{margin-top:20px;font-size:12.5px;color:#8a9794;max-width:760px}

/* --- article & extra --- */
.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0 0}
.breadcrumb a{color:var(--muted)}
.article{max-width:780px;margin:0 auto;padding:10px 0 20px}
.article h1{font-size:34px;line-height:1.15;letter-spacing:-.5px;margin:14px 0 8px}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:22px}
.article h2{font-size:23px;margin:30px 0 10px;letter-spacing:-.3px}
.article p{margin-bottom:14px;font-size:17px}
.article ol,.article ul{margin:0 0 16px 22px}
.article li{margin-bottom:8px;font-size:17px}
.steps{counter-reset:s;list-style:none;margin-left:0!important}
.steps li{position:relative;padding:12px 14px 12px 52px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:12px;top:12px;width:28px;height:28px;background:var(--brand);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.note-box{background:#fff8ec;border:1px solid #f3e0bd;border-radius:12px;padding:14px 16px;font-size:15px;margin:16px 0}
.cta-box{background:#e9f7f1;border:1px solid #c4e8da;border-radius:14px;padding:22px;text-align:center;margin:26px 0}
.cta-box h3{margin-bottom:8px}
.related{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}
.related a{display:inline-block;margin:4px 8px 4px 0;background:#eef5f3;padding:6px 12px;border-radius:999px;font-size:14px;font-weight:600}
.formsec{background:linear-gradient(120deg,#0e7c66,#0a5f4e);color:#fff;border-radius:24px;padding:42px;text-align:center;margin:0 20px}
.formsec h2{font-size:28px;margin-bottom:8px}
.formsec p{opacity:.92;margin-bottom:20px}
.formrow{display:flex;gap:10px;max-width:460px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.formrow input{flex:1;min-width:220px;border:none;border-radius:999px;padding:13px 18px}
.formrow button{background:#fff;color:var(--brand-d);border:none;border-radius:999px;padding:13px 22px;font-weight:700;cursor:pointer}
.fmsg{margin-top:12px;font-size:14px;min-height:18px}
.card a{color:inherit}