/* ==========================================================================
   BBS × IBM Vault — GDN açılış sayfası
   Tasarım çizgisi: bilgibirikim.com (Poppins, magenta #8e0054, indigo #19134f)
   ========================================================================== */

:root {
  /* BBS kurumsal renkler — ana renk #8e0054 */
  --plum: #8e0054;
  --plum-hover: #a00661;
  --plum-press: #6f0041;
  --plum-50: #fdf4f9;
  --plum-100: #f6e0ed;
  --plum-200: #e6bdd4;
  /* Koyu zeminde okunabilir nötr aksan (parlak pembe yerine) */
  --on-dark-soft: #c6c1e4;

  --indigo: #273890;
  --indigo-deep: #19134f;
  --indigo-950: #0e0a32;

  --ink: #1b1b1b;
  --ink-2: #33333a;
  --text: #4e4e58;
  --muted: #7a7a86;
  --line: #e4e4ec;
  --line-2: #d2d2de;
  --bg: #ffffff;
  --bg-soft: #f7f7fa;

  --on-dark: #b9b6d4;
  --dark-line: rgba(178, 168, 230, .14);

  --danger: #c62828;
  --ok: #1d8a4e;

  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(25, 19, 79, .05), 0 6px 18px -10px rgba(25, 19, 79, .16);
  --shadow: 0 30px 70px -34px rgba(25, 19, 79, .38);
  --shadow-lg: 0 40px 90px -40px rgba(25, 19, 79, .46);

  --header-h: 78px;
  --font: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  overflow-x: clip;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--plum); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.015em;
  text-wrap: balance;
}

.container {
  width: 100%;
  max-width: 1260px;
  margin-inline: auto;
  padding-inline: 24px;
}
.container-narrow { max-width: 880px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.ic {
  display: inline-block;
  width: 1.25em;
  height: 1.25em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px; left: 12px;
  z-index: 200;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--indigo-deep);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform .2s ease;
}
.skip-link:focus-visible { transform: none; }

:where(a, button, input, select, textarea, summary, details):focus-visible {
  outline: 3px solid var(--plum-hover);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Yükleyici ---------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  background: #fff;
  transition: opacity .45s ease, visibility .45s ease;
}
.is-loaded .preloader { opacity: 0; visibility: hidden; }
.preloader-inner { position: relative; display: grid; place-items: center; width: 118px; height: 118px; }
.preloader-inner img { width: 76px; height: auto; }
.preloader-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--plum-100);
  border-top-color: var(--plum);
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Butonlar ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: .005em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.btn .ic { width: 1.1em; height: 1.1em; stroke-width: 2; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--plum);
  color: #fff;
  box-shadow: 0 12px 26px -14px rgba(142, 0, 84, .8);
}
.btn-primary:hover { background: var(--plum-hover); box-shadow: 0 16px 32px -14px rgba(142, 0, 84, .9); }
.btn-primary:active { background: var(--plum-press); }

.btn-outline {
  background: transparent;
  color: var(--indigo-deep);
  border-color: var(--line-2);
}
.btn-outline:hover { border-color: var(--plum); color: var(--plum); background: var(--plum-50); }

.btn-light {
  background: rgba(255, 255, 255, .1);
  color: #fff;
  border-color: rgba(255, 255, 255, .34);
}
.btn-light:hover { background: rgba(255, 255, 255, .18); border-color: rgba(255, 255, 255, .6); }

.btn-sm { padding: 10px 18px; font-size: .875rem; }
.btn-lg { padding: 16px 30px; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-spinner {
  position: absolute;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .35);
  border-top-color: #fff;
  opacity: 0;
  animation: spin .7s linear infinite;
}
.btn.is-loading { pointer-events: none; }
.btn.is-loading .btn-label, .btn.is-loading > .ic { opacity: 0; }
.btn.is-loading .btn-spinner { opacity: 1; }

/* ---------- Üst bar ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s ease;
}
.site-header.is-stuck { box-shadow: 0 10px 30px -22px rgba(25, 19, 79, .5); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: var(--header-h);
}

.brand-lockup { display: flex; align-items: center; gap: 16px; }
.brand-lockup img { width: auto; }
.logo-td { height: 21px; }
.logo-ibm { height: 30px; }
.logo-bbs { height: 38px; }
.logo-bbs-link { display: block; line-height: 0; transition: opacity .18s ease; }
.logo-bbs-link:hover { opacity: .78; }
.lockup-divider { width: 1px; height: 26px; background: var(--line-2); flex: none; }

.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--indigo-deep);
  font-size: .9375rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.header-phone:hover { color: var(--plum); }
.header-phone .ic { color: var(--plum); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  padding: 74px 0 86px;
  background: linear-gradient(168deg, var(--indigo-deep) 0%, var(--indigo-950) 58%, #140e3d 100%);
  color: #cfcce6;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .55;
}
.hero-glow-1 {
  width: 620px; height: 620px;
  top: -220px; right: -160px;
  background: radial-gradient(circle, rgba(142, 0, 84, .66), transparent 68%);
}
.hero-glow-2 {
  width: 520px; height: 520px;
  bottom: -260px; left: -140px;
  background: radial-gradient(circle, rgba(39, 56, 144, .85), transparent 70%);
}
.hero-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(178, 168, 230, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(178, 168, 230, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 95% 78% at 45% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 95% 78% at 45% 30%, #000 30%, transparent 78%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: 56px;
  align-items: start;
}

.hero-title {
  font-size: clamp(2.05rem, 1.35rem + 2.5vw, 3.15rem);
  font-weight: 600;
  line-height: 1.14;
  color: rgba(255, 255, 255, .78);
  letter-spacing: -.024em;
}
/* Vurgu renkle değil, parlaklıkla verilir: koyu zeminde daha kurumsal durur. */
.hero-title em {
  font-style: normal;
  color: #fff;
  white-space: nowrap;
}

.hero-lead {
  margin-top: 20px;
  max-width: 60ch;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: #b9b6d4;
}

.checklist { margin-top: 26px; display: grid; gap: 13px; }
.checklist li { display: flex; align-items: flex-start; gap: 12px; font-size: .9688rem; line-height: 1.55; }
.checklist .ic {
  margin-top: .18em;
  width: 1.35em; height: 1.35em;
  padding: 3px;
  border-radius: 50%;
  background: var(--plum);
  color: #fff;
  stroke-width: 2.4;
}
.checklist strong { color: #fff; font-weight: 600; }

.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px; }
.hero-actions .btn-outline { color: #fff; border-color: rgba(255, 255, 255, .34); }
.hero-actions .btn-outline:hover { background: rgba(255, 255, 255, .1); border-color: #fff; color: #fff; }

.hero-note {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: .8438rem;
  color: #8f8cb4;
}
.hero-note .ic { width: 1.05em; height: 1.05em; }

/* ---------- Form kartı ---------- */
.hero-form-wrap { position: relative; scroll-margin-top: calc(var(--header-h) + 16px); }
.form-card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .6);
}

.form-head { margin-bottom: 20px; }
.form-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  color: var(--plum);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
}
.form-kicker .ic { width: 1.05em; height: 1.05em; }
.form-title { font-size: 1.5rem; font-weight: 600; }
.form-sub { margin-top: 8px; font-size: .875rem; line-height: 1.55; color: var(--muted); }

.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 0 0 20px;
  padding: 5px;
  border: 0;
  border-radius: 999px;
  background: var(--bg-soft);
}
.seg-opt { position: relative; }
.seg-opt input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.seg-opt span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 8px;
  border-radius: 999px;
  font-size: .8438rem;
  font-weight: 600;
  color: var(--muted);
  transition: background-color .18s ease, color .18s ease, box-shadow .18s ease;
}
.seg-opt span .ic { width: 1.05em; height: 1.05em; }
.seg-opt input:checked + span { background: #fff; color: var(--plum); box-shadow: var(--shadow-sm); }
.seg-opt input:focus-visible + span { outline: 3px solid var(--plum-hover); outline-offset: 2px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.span-2 { grid-column: 1 / -1; }

.field { position: relative; }
.field input, .field select {
  width: 100%;
  height: 56px;
  padding: 22px 15px 7px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  background: #fff;
  font: inherit;
  font-size: .9375rem;
  color: var(--ink);
  transition: border-color .18s ease, box-shadow .18s ease;
  appearance: none;
  -webkit-appearance: none;
}
.field select { cursor: pointer; }
.field label {
  position: absolute;
  top: 17px; left: 16px;
  font-size: .9375rem;
  color: var(--muted);
  pointer-events: none;
  transition: transform .16s ease, font-size .16s ease, color .16s ease;
  transform-origin: left top;
}
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--plum);
  box-shadow: 0 0 0 3px rgba(142, 0, 84, .12);
}
.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field select:focus + label,
.field select:valid + label {
  transform: translateY(-10px) scale(.76);
  color: var(--plum);
}
/* Select her zaman bir metin gösterdiği için etiketi kalıcı olarak yukarıda tutuyoruz. */
.field-select label { transform: translateY(-10px) scale(.76); }
.field-select select:focus + label { color: var(--plum); }
.field select:invalid { color: var(--muted); }
.select-chevron {
  position: absolute;
  top: 50%; right: 14px;
  width: 18px; height: 18px;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}
.field-error {
  min-height: 0;
  margin-top: 4px;
  font-size: .75rem;
  line-height: 1.4;
  color: var(--danger);
}
.field.is-invalid input, .field.is-invalid select { border-color: var(--danger); }
.field.is-invalid label { color: var(--danger); }

.consents { margin-top: 18px; display: grid; gap: 12px; }
.check { display: flex; align-items: flex-start; gap: 11px; cursor: pointer; }
.check input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.check-box {
  flex: none;
  display: grid;
  place-items: center;
  width: 20px; height: 20px;
  margin-top: 1px;
  border: 1.5px solid var(--line-2);
  border-radius: 6px;
  background: #fff;
  transition: background-color .16s ease, border-color .16s ease;
}
.check-box .ic { width: 14px; height: 14px; color: #fff; stroke-width: 3; opacity: 0; transition: opacity .16s ease; }
.check input:checked + .check-box { background: var(--plum); border-color: var(--plum); }
.check input:checked + .check-box .ic { opacity: 1; }
.check input:focus-visible + .check-box { outline: 3px solid var(--plum-hover); outline-offset: 2px; }
.check-text { font-size: .8125rem; line-height: 1.5; color: var(--muted); }
.check-text a { color: var(--plum); font-weight: 500; }
.check.is-invalid .check-box { border-color: var(--danger); }

.lead-form .btn-block { margin-top: 20px; }
.form-status { margin-top: 10px; font-size: .8125rem; color: var(--danger); text-align: center; }
.form-status:empty { margin: 0; }

.form-success { text-align: center; padding: 26px 6px; }
.form-success p { margin: 10px 0 22px; color: var(--muted); font-size: .9375rem; }
.success-mark {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: var(--plum-100);
  color: var(--plum);
}
.success-mark .ic { width: 30px; height: 30px; stroke-width: 2.6; }

/* ---------- Rakamlar ---------- */
.stats { margin-top: -46px; position: relative; z-index: 2; }
.stats-card {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  padding: 30px 12px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.stats-card li {
  padding: 4px 26px;
  text-align: center;
  border-left: 1px solid var(--line);
}
.stats-card li:first-child { border-left: 0; }
.stat-value {
  display: block;
  font-size: clamp(1.45rem, 1.15rem + .9vw, 1.9rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--plum);
}
.stat-label { display: block; margin-top: 9px; font-size: .8125rem; line-height: 1.5; color: var(--muted); }
.stat-label em { display: block; margin-top: 4px; font-style: normal; font-size: .6875rem; color: #9a9aa6; }

/* ---------- Bölümler ---------- */
.section { padding: 86px 0; }
.section-soft { background: var(--bg-soft); }
.section-dark {
  background: linear-gradient(160deg, var(--indigo-deep) 0%, var(--indigo-950) 100%);
  color: var(--on-dark);
}
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark .section-lead { color: #a6a2c8; }

.section-head { max-width: 760px; margin-bottom: 46px; }
.kicker {
  margin-bottom: 12px;
  color: var(--plum);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.kicker-light { color: var(--on-dark-soft); }
.section-title { font-size: clamp(1.6rem, 1.2rem + 1.5vw, 2.35rem); letter-spacing: -.022em; }
.section-lead { margin-top: 16px; font-size: 1.0313rem; line-height: 1.7; color: var(--text); }

/* ---------- Sorun kartları ---------- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.pain-card {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.pain-card:hover { transform: translateY(-4px); border-color: var(--plum-100); box-shadow: var(--shadow); }
.pain-ic {
  width: 44px; height: 44px;
  padding: 10px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: var(--plum-50);
  color: var(--plum);
}
.pain-card h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.pain-card p { font-size: .9063rem; line-height: 1.62; color: var(--muted); }

/* ---------- Yetenek kartları ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.cap-card {
  display: flex;
  flex-direction: column;
  padding: 30px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .22s ease, box-shadow .22s ease;
}
.cap-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.cap-ic {
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: linear-gradient(140deg, var(--plum-hover), var(--plum));
  color: #fff;
  box-shadow: 0 10px 22px -12px rgba(142, 0, 84, .9);
}
.cap-ic .ic { width: 24px; height: 24px; }
.cap-card h3 { font-size: 1.125rem; margin-bottom: 10px; }
.cap-card > p { font-size: .9063rem; line-height: 1.62; color: var(--muted); }
.cap-list { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); display: grid; gap: 9px; }
.cap-list li {
  position: relative;
  padding-left: 18px;
  font-size: .8438rem;
  line-height: 1.5;
  color: var(--text);
}
.cap-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .55em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--plum);
}

/* ---------- Karşılaştırma ---------- */
.compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.compare-col { padding: 34px 32px; }
.compare-col h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 1.0625rem;
}
.compare-col h3 .ic {
  width: 26px; height: 26px;
  padding: 5px;
  border-radius: 50%;
  stroke-width: 2.6;
}
.compare-col ul { display: grid; gap: 13px; }
.compare-col li {
  position: relative;
  padding-left: 20px;
  font-size: .9375rem;
  line-height: 1.55;
}
.compare-col li::before {
  content: "";
  position: absolute;
  left: 0; top: .6em;
  width: 7px; height: 7px;
  border-radius: 50%;
}
.compare-before { background: #fbfbfd; }
.compare-before h3 { color: var(--ink-2); }
.compare-before h3 .ic { background: #f1e3e6; color: #a6404f; }
.compare-before li { color: var(--muted); }
.compare-before li::before { background: #c9c9d4; }

.compare-after { background: linear-gradient(170deg, var(--plum-50), #fff 72%); border-left: 1px solid var(--line); }
.compare-after h3 { color: var(--plum); }
.compare-after h3 .ic { background: var(--plum); color: #fff; }
.compare-after li { color: var(--ink-2); }
.compare-after li::before { background: var(--plum); }

.compare-arrow {
  display: grid;
  place-items: center;
  width: 58px;
  background: #fff;
  border-inline: 1px solid var(--line);
  color: var(--plum);
}
.compare-arrow .ic { width: 24px; height: 24px; stroke-width: 2; }

/* ---------- Nasıl çalışır ---------- */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.flow-step {
  position: relative;
  padding: 32px 28px;
  border: 1px solid var(--dark-line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .035);
  transition: background-color .22s ease, border-color .22s ease, transform .22s ease;
}
.flow-step:hover { background: rgba(255, 255, 255, .06); border-color: rgba(198, 193, 228, .28); transform: translateY(-4px); }
.flow-num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--on-dark-soft);
}
.flow-ic {
  width: 44px; height: 44px;
  padding: 10px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: var(--plum);
  color: #fff;
  stroke-width: 1.7;
}
.flow-step h3 { font-size: 1.1875rem; margin-bottom: 10px; }
.flow-step p { font-size: .9063rem; line-height: 1.65; color: #a6a2c8; }

.feature-chips {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.feature-chips li {
  padding: 9px 17px;
  border: 1px solid var(--dark-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  font-size: .8125rem;
  color: #c4c0de;
}

/* ---------- Kullanım senaryoları ---------- */
.use-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.use-card {
  position: relative;
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  transition: transform .22s ease, box-shadow .22s ease;
}
.use-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--plum), var(--plum-hover));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s ease;
}
.use-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.use-card:hover::after { transform: scaleX(1); }
.use-ic { width: 34px; height: 34px; margin-bottom: 16px; color: var(--indigo); stroke-width: 1.5; }
.use-card h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.use-card p { font-size: .9063rem; line-height: 1.62; color: var(--muted); }

.sector-strip {
  margin-top: 40px;
  padding: 26px 30px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.sector-title {
  margin-bottom: 16px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.sector-list { display: flex; flex-wrap: wrap; gap: 10px 12px; }
.sector-list li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  font-size: .875rem;
  font-weight: 500;
  color: var(--ink-2);
}
.sector-list .ic { width: 1.1em; height: 1.1em; color: var(--plum); }

/* ---------- Neden BBS ---------- */
.bbs-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 56px;
  align-items: start;
}
.bbs-copy .checklist-lg { margin-top: 28px; margin-bottom: 32px; gap: 16px; }
.bbs-copy .checklist-lg li { font-size: .9375rem; color: var(--text); }
.bbs-copy .checklist-lg .ic { background: var(--plum-100); color: var(--plum); }
.bbs-copy .checklist-lg strong { color: var(--ink); }

.cred-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.cred-card {
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform .22s ease, box-shadow .22s ease;
}
.cred-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cred-ic {
  width: 32px; height: 32px;
  margin-bottom: 14px;
  color: var(--plum);
  stroke-width: 1.5;
}
.cred-card h3 { font-size: .9688rem; margin-bottom: 6px; }
.cred-card p { font-size: .8438rem; line-height: 1.55; color: var(--muted); }

/* ---------- SSS ---------- */
.faq { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 4px;
  font-size: 1.0313rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color .18s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "";
  flex: none;
  width: 11px; height: 11px;
  border-right: 2px solid var(--plum);
  border-bottom: 2px solid var(--plum);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .22s ease;
}
.faq-item[open] summary { color: var(--plum); }
.faq-item[open] summary::after { transform: rotate(225deg) translate(-2px, -2px); }
.faq-item summary:hover { color: var(--plum); }
.faq-body { padding: 0 4px 24px; }
.faq-body p { font-size: .9375rem; line-height: 1.7; color: var(--muted); max-width: 72ch; }

/* ---------- Kapanış CTA ---------- */
.final-cta {
  padding: 68px 0;
  background: linear-gradient(120deg, var(--plum) 0%, #6e0048 46%, var(--indigo-deep) 100%);
  color: #ecd9e5;
}
.final-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 42px;
  flex-wrap: wrap;
}
.final-cta h2 { color: #fff; font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.05rem); }
.final-cta p { margin-top: 12px; max-width: 58ch; font-size: 1rem; line-height: 1.65; color: #e0c6d5; }
.final-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.final-actions .btn-primary { background: #fff; color: var(--plum); box-shadow: 0 16px 34px -18px rgba(0, 0, 0, .7); }
.final-actions .btn-primary:hover { background: var(--plum-50); color: var(--plum-press); }

/* ---------- Footer ---------- */
.site-footer {
  padding: 56px 0 26px;
  background: var(--indigo-950);
  color: #8f8cb4;
  font-size: .875rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: 44px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--dark-line);
}
.brand-lockup-footer .lockup-divider { background: rgba(255, 255, 255, .2); }
.footer-note { margin-top: 20px; max-width: 54ch; line-height: 1.65; }
.footer-contact { display: grid; gap: 14px; }
.footer-contact li, .footer-contact a {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  color: #a5a2c4;
  text-decoration: none;
  line-height: 1.55;
}
.footer-contact a:hover { color: #fff; }
.footer-contact .ic { margin-top: .18em; width: 1.15em; height: 1.15em; color: var(--on-dark-soft); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 30px;
  padding-top: 22px;
  font-size: .75rem;
  color: #6f6c92;
}
.footer-legal a { color: #a5a2c4; }
.footer-legal a:hover { color: #fff; }

/* ---------- Mobil sabit CTA ---------- */
.mobile-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 90;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  transform: translateY(120%);
  transition: transform .28s ease;
  display: none;
}
.mobile-cta.is-visible { transform: none; }

/* ---------- Kaydırma animasyonu ---------- */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================================
   Duyarlı düzen
   ========================================================================== */

@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-copy { max-width: 720px; }
  .cap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bbs-grid { grid-template-columns: 1fr; gap: 42px; }
}

@media (max-width: 980px) {
  .header-phone { display: none; }
  .pain-grid, .use-grid, .flow-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-card { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 26px 0; }
  .stats-card li:nth-child(odd) { border-left: 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 860px) {
  .compare { grid-template-columns: 1fr; }
  .compare-arrow {
    width: auto;
    height: 46px;
    border-inline: 0;
    border-block: 1px solid var(--line);
  }
  .compare-arrow .ic { transform: rotate(90deg); }
  .compare-after { border-left: 0; }
}

@media (max-width: 760px) {
  .section { padding: 62px 0; }
  .section-head { margin-bottom: 34px; }
  .hero { padding: 48px 0 68px; }
  .mobile-cta { display: block; }
  body { padding-bottom: 0; }

  .brand-lockup { gap: 11px; }
  .logo-td { height: 17px; }
  .logo-ibm { height: 24px; }
  .logo-bbs { height: 30px; }

  .form-card { padding: 22px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .field-half { grid-column: auto; }

  .pain-grid, .use-grid, .flow-steps, .cap-grid, .cred-grid { grid-template-columns: 1fr; }
  .stats { margin-top: -34px; }
  .stats-card { padding: 24px 8px; }
  .stats-card li { padding: 4px 16px; }

  .final-inner { flex-direction: column; align-items: flex-start; gap: 26px; }
  .final-actions { width: 100%; }
  .final-actions .btn { flex: 1 1 200px; }

  .footer-bottom { flex-direction: column; }
}

@media (max-width: 600px) {
  /* Üst barda CTA yerine, sayfa boyunca erişilebilir sabit alt CTA kullanılıyor. */
  .header-actions { display: none; }
  .header-inner { justify-content: center; }
  .brand-lockup { gap: 14px; }
  .logo-td { height: 19px; }
  .logo-ibm { height: 27px; }
  .logo-bbs { height: 34px; }
}

@media (max-width: 520px) {
  .container { padding-inline: 18px; }
  .hero { padding-top: 40px; }
  .hero-title { font-size: 1.9375rem; }
  .hero-title em { white-space: normal; }
  .hero-lead { font-size: .9688rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .lockup-divider { height: 22px; }
  .btn { white-space: normal; }
  .seg { grid-template-columns: 1fr; border-radius: var(--radius-sm); }
  .seg-opt span { border-radius: 8px; }
  .sector-strip { padding: 22px 18px; }
  .compare-col { padding: 26px 22px; }
  .flow-step, .pain-card, .use-card, .cap-card { padding: 24px 22px; }
}

@media (max-width: 400px) {
  .brand-lockup { gap: 10px; }
  .logo-td { height: 16px; }
  .logo-ibm { height: 23px; }
  .logo-bbs { height: 29px; }
  .hero-title { font-size: 1.8125rem; }
}

/* ---------- Hareket azaltma ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- Yazdırma ---------- */
@media print {
  .site-header, .mobile-cta, .preloader, .hero-form-wrap { display: none !important; }
  .hero, .section-dark, .final-cta, .site-footer { background: #fff !important; color: #000 !important; }
  .hero-title, .section-dark h2, .section-dark h3, .final-cta h2 { color: #000 !important; }
}