/* RF Sayaç Okuma tanıtım sitesi.
   Yazı tipi: IBM Plex Sans / Mono (OFL, assets/fonts altında barındırılır; dışarıya istek yok). */

@font-face { font-family: "Plex Sans"; font-weight: 400; font-display: swap; src: url("../fonts/plex-sans-latin-400.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Sans"; font-weight: 400; font-display: swap; src: url("../fonts/plex-sans-latin-ext-400.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Plex Sans"; font-weight: 500; font-display: swap; src: url("../fonts/plex-sans-latin-500.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Sans"; font-weight: 500; font-display: swap; src: url("../fonts/plex-sans-latin-ext-500.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Plex Sans"; font-weight: 600; font-display: swap; src: url("../fonts/plex-sans-latin-600.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Sans"; font-weight: 600; font-display: swap; src: url("../fonts/plex-sans-latin-ext-600.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Plex Sans"; font-weight: 700; font-display: swap; src: url("../fonts/plex-sans-latin-700.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Sans"; font-weight: 700; font-display: swap; src: url("../fonts/plex-sans-latin-ext-700.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-display: swap; src: url("../fonts/plex-mono-latin-400.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Mono"; font-weight: 400; font-display: swap; src: url("../fonts/plex-mono-latin-ext-400.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Plex Mono"; font-weight: 500; font-display: swap; src: url("../fonts/plex-mono-latin-500.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Plex Mono"; font-weight: 500; font-display: swap; src: url("../fonts/plex-mono-latin-ext-500.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }

:root {
  --paper: #faf9f7;
  --white: #ffffff;
  --ink: #1d2125;
  --ink-2: #3a4047;
  --muted: #646b74;
  --rule: #e3dfd8;
  --rule-strong: #cfc9c0;
  --orange: #f07a10;
  --orange-text: #b4470a;
  --orange-tint: #fdf0e3;
  --dark: #17191c;
  --danger: #b42318;
  --ok: #146c43;
  --sans: "Plex Sans", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --mono: "Plex Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  --container: 1160px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font: 400 17px/1.6 var(--sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--orange-text); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }
p { margin: 0; }
code { font-family: var(--mono); font-size: 0.88em; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--ink); color: #fff; padding: 8px 14px; }
.skip-link:focus { left: 8px; }

.mono { font-family: var(--mono); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 20px;
  border: 1px solid var(--ink); border-radius: 6px;
  font: 500 16px/1 var(--sans); text-decoration: none; cursor: pointer; white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; color: #fff; }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: #fff; }
.btn-orange { background: var(--orange); border-color: var(--orange); color: var(--ink); }
.btn-orange:hover { background: #ff8a1f; color: var(--ink); }

/* ---------- Üst menü ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(250, 249, 247, 0.96); border-bottom: 1px solid var(--rule); }
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand img { height: 36px; width: auto; }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink-2); font-size: 15px; text-decoration: none; }
.nav a:hover { color: var(--orange-text); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-actions .login { color: var(--ink); font-size: 15px; font-weight: 500; text-decoration: none; }
.header-actions .login:hover { color: var(--orange-text); }
.header-actions .btn { min-height: 38px; padding: 0 14px; font-size: 15px; }
.nav-toggle { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--rule-strong); border-radius: 6px; background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle svg { width: 22px; height: 22px; }

/* ---------- Giriş ---------- */
.hero { padding: 72px 0 88px; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: center; }
.tagline { font-family: var(--mono); font-size: 13.5px; color: var(--muted); letter-spacing: 0.02em; }
.hero h1 { margin-top: 18px; font-size: clamp(36px, 4.6vw, 54px); font-weight: 600; letter-spacing: -0.025em; }
.hero-lead { margin-top: 22px; font-size: 19px; color: var(--ink-2); max-width: 520px; }
.hero-cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 18px; font-size: 14.5px; color: var(--muted); }

.figure { margin: 0; }
.frame { position: relative; margin-right: 18px; }
.frame::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; background: var(--orange); border-radius: 4px; }
.frame img { position: relative; border-radius: 4px; border: 1px solid #2a2e33; }
.figure figcaption { margin-top: 34px; font-size: 14px; color: var(--muted); }

/* ---------- Bölümler ---------- */
.section { padding: 88px 0; border-bottom: 1px solid var(--rule); }
.section-white { background: var(--white); }
.section-head { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: end; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(28px, 3.2vw, 38px); }
.section-head p { color: var(--ink-2); font-size: 17.5px; }

/* Okuma yöntemleri tablosu */
.methods { width: 100%; border-collapse: collapse; font-size: 16px; }
.methods th { text-align: left; font-weight: 500; font-size: 13.5px; color: var(--muted); font-family: var(--mono); padding: 0 16px 12px 0; border-bottom: 1px solid var(--rule-strong); }
.methods td { padding: 20px 16px 20px 0; border-bottom: 1px solid var(--rule); vertical-align: top; color: var(--ink-2); }
.methods td:first-child { color: var(--ink); font-weight: 600; width: 22%; }
.methods td:first-child span { display: block; margin-top: 4px; font-weight: 400; font-size: 14px; color: var(--muted); }
.methods td.hw { font-family: var(--mono); font-size: 14.5px; color: var(--ink); width: 22%; }

/* Okuma adımları */
.walk { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 52px 1fr; padding: 22px 0; border-top: 1px solid var(--rule); }
.steps li:last-child { border-bottom: 1px solid var(--rule); }
.steps li::before { content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 15px; color: var(--orange-text); padding-top: 2px; }
.steps h3 { font-size: 18px; }
.steps p { margin-top: 6px; color: var(--ink-2); font-size: 16px; }
.walk .figure { margin-top: 8px; }

/* Özellik listesi */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 56px; }
.feature-group { padding: 28px 0; border-top: 1px solid var(--rule-strong); }
.feature-group h3 { font-family: var(--mono); font-weight: 500; font-size: 13.5px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--orange-text); }
.feature-group dl { margin: 14px 0 0; }
.feature-group dt { font-weight: 600; margin-top: 16px; }
.feature-group dd { margin: 4px 0 0; color: var(--ink-2); font-size: 16px; }

/* Markalar */
.brands { display: grid; grid-template-columns: 1fr 2fr; gap: 56px; }
.brands h2 { font-size: 24px; }
.brands p { color: var(--ink-2); }
.brand-names { font-size: 20px; line-height: 1.7; color: var(--ink); }
.brand-names + p { margin-top: 16px; font-size: 15.5px; color: var(--muted); }

/* Paketler */
.plans { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--rule-strong); }
.plan { padding: 32px 40px 8px 0; }
.plan + .plan { padding-left: 40px; border-left: 1px solid var(--rule); }
.plan h3 { font-size: 22px; }
.plan > p { margin-top: 10px; color: var(--ink-2); }
.plan ul { margin: 18px 0 0; padding-left: 20px; color: var(--ink-2); }
.plan li { margin-top: 8px; }
.plan li::marker { color: var(--orange); }
.plans-note { margin-top: 32px; color: var(--ink-2); }

/* Entegrasyon */
.integration { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }
.integration h2 { font-size: clamp(28px, 3.2vw, 38px); }
.integration p { margin-top: 16px; color: var(--ink-2); }
.integration ul { margin: 18px 0 0; padding-left: 20px; color: var(--ink-2); }
.integration li { margin-top: 8px; }
.integration li::marker { color: var(--orange); }
.code { margin: 0; background: var(--dark); color: #d5dae0; border-radius: 4px; padding: 22px 24px; font: 13.5px/1.75 var(--mono); overflow-x: auto; }
.code .c { color: #7f8892; }
.code .k { color: #ffb05c; }
.code .s { color: #a8d8b0; }

/* SSS */
.faq { display: grid; grid-template-columns: 1fr 2fr; gap: 56px; }
.faq h2 { font-size: clamp(28px, 3.2vw, 38px); }
.faq-list { border-top: 1px solid var(--rule-strong); }
.faq-list details { border-bottom: 1px solid var(--rule); }
.faq-list summary { cursor: pointer; list-style: none; padding: 20px 36px 20px 0; font-weight: 600; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font: 400 24px/1 var(--mono); color: var(--orange-text); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { padding: 0 0 22px; color: var(--ink-2); }

/* İletişim */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.contact-grid h2 { font-size: clamp(28px, 3.2vw, 38px); }
.contact-lead { margin-top: 16px; color: var(--ink-2); }
.contact-lines { margin: 32px 0 0; }
.contact-lines dt { font-family: var(--mono); font-size: 13.5px; color: var(--muted); margin-top: 18px; }
.contact-lines dd { margin: 4px 0 0; font-size: 20px; font-weight: 500; }
.contact-lines a { color: var(--ink); }
.contact-lines a:hover { color: var(--orange-text); }

.form { background: var(--white); border: 1px solid var(--rule-strong); border-radius: 6px; padding: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.field label { font-size: 14.5px; font-weight: 500; color: var(--ink-2); }
.req { color: var(--orange-text); }
.field input, .field select, .field textarea {
  width: 100%; font: 16px/1.4 var(--sans); color: var(--ink); background: var(--white);
  border: 1px solid var(--rule-strong); border-radius: 4px; padding: 11px 12px;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px var(--orange-tint); }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--danger); }
.field-error { font-size: 13.5px; color: var(--danger); }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--muted); margin-bottom: 22px; }
.consent input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--ink); flex: none; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.form .btn { width: 100%; }
.form-status { display: none; margin-top: 14px; padding: 12px 14px; border-radius: 4px; font-size: 15px; }
.form-status.ok { display: block; background: #e7f4ec; color: var(--ok); }
.form-status.error { display: block; background: #fbeceb; color: var(--danger); }

/* ---------- Alt bilgi ---------- */
.site-footer { padding: 40px 0 48px; font-size: 14.5px; color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.footer-row img { height: 30px; width: auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a { color: var(--ink-2); text-decoration: none; }
.footer-links a:hover { color: var(--orange-text); }
.footer-note { margin-top: 20px; font-size: 13px; }

/* ---------- Metin sayfası ---------- */
.prose { max-width: 760px; margin: 0 auto; padding: 64px 24px 96px; }
.prose h1 { font-size: clamp(28px, 3.6vw, 38px); }
.prose h2 { font-size: 20px; margin-top: 36px; }
.prose p, .prose li { color: var(--ink-2); }
.prose p { margin-top: 14px; }
.prose ul { margin: 14px 0 0; padding-left: 22px; }

/* ---------- Duyarlı ---------- */
@media (max-width: 1040px) {
  .nav, .header-actions { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.open .header-inner { flex-wrap: wrap; height: auto; padding: 14px 0 18px; }
  .site-header.open .nav { display: flex; order: 3; width: 100%; flex-direction: column; gap: 0; margin: 8px 0 0; }
  .site-header.open .nav a { padding: 12px 0; border-bottom: 1px solid var(--rule); }
  .site-header.open .header-actions { display: flex; order: 4; width: 100%; justify-content: space-between; margin-top: 14px; }
}

@media (max-width: 900px) {
  .hero { padding: 48px 0 64px; }
  .section { padding: 64px 0; }
  .hero-grid, .section-head, .walk, .features, .brands, .integration, .faq, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-head { margin-bottom: 32px; }
  .plans { grid-template-columns: 1fr; }
  .plan { padding: 28px 0 8px; }
  .plan + .plan { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }

  /* Tablo satırları alt alta */
  .methods thead { display: none; }
  .methods, .methods tbody, .methods tr, .methods td { display: block; width: 100% !important; }
  .methods tr { padding: 18px 0; border-bottom: 1px solid var(--rule); }
  .methods td { padding: 4px 0; border: 0; }
  .methods td[data-label]::before { content: attr(data-label); display: block; font: 500 12.5px/1.6 var(--mono); color: var(--muted); }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .hero-lead { font-size: 17.5px; }
  .frame { margin-right: 10px; }
  .frame::before { inset: 10px -10px -10px 10px; }
  .form { padding: 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .brand-names { font-size: 18px; }
}