/* peptology.com.tr — tek sayfa. Referans: sofihealth.com (Awwwards SOTD, 24 Oca 2025) */

@font-face {
  font-family: "Inter Tight";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(../fonts/inter-tight-latin-ext.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: "Inter Tight";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url(../fonts/inter-tight-latin.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;
}

:root {
  --bg: #ecedef;
  --paper: #ffffff;
  --ink: #111213;
  --ink-2: #3a3d40;
  --muted: #74787c;
  --line: #d3d5d8;
  --dark: #0b0c0d;
  --on-dark: #f2f3f4;
  --on-dark-muted: #9a9ea3;
  --accent: #3b4fd8;
  --sage: #9fae97;
  --lilac: #a9a3cf;
  --clay: #c98e72;
  --err: #b3261e;
  --ok: #1f6b46;
  --gutter: clamp(16px, 3vw, 40px);
  --max: 1520px;
  --radius: 8px;
  --ease: cubic-bezier(.2, .7, .1, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter Tight", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 500; letter-spacing: -0.035em; line-height: .92; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- üst şerit ---------- */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  transition: background-color .3s, color .3s;
}
.top.is-solid { background: rgba(236, 237, 239, .92); backdrop-filter: saturate(1.2) blur(6px); }
.top.on-dark { color: var(--on-dark); }
.top.on-dark.is-solid { background: rgba(11, 12, 13, .88); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 500; font-size: 24px; letter-spacing: -0.04em; }
.brand svg { width: 30px; height: 30px; flex: none; }
.top nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top nav a { text-decoration: none; }
.top nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.lang { color: var(--muted); }
.top.on-dark .lang { color: var(--on-dark-muted); }

/* ---------- düğme ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 52px; padding: 0 26px;
  background: var(--ink); color: var(--paper);
  border: 1px solid var(--ink); border-radius: var(--radius);
  font: inherit; font-weight: 500; font-size: 17px; letter-spacing: -0.01em;
  text-decoration: none; cursor: pointer;
  transition: background-color .2s, color .2s, transform .2s var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 16px; height: 16px; }
.btn[disabled] { opacity: .55; cursor: progress; }

/* ---------- hero ---------- */
.hero {
  position: relative; min-height: 100svh; overflow: hidden;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center;
  padding: 96px var(--gutter) 64px;
  max-width: var(--max); margin: 0 auto;
}
.hero__text { position: relative; z-index: 2; padding-left: clamp(0px, 4vw, 90px); }
.hero h1 { font-size: clamp(76px, 15.2vw, 236px); letter-spacing: -0.055em; line-height: .84; }
.hero h1 span { display: block; }
.hero__lead { margin-top: clamp(24px, 3vw, 44px); max-width: 30em; font-size: clamp(17px, 1.35vw, 20px); color: var(--ink-2); }
.hero__cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; }
.hero__cta .link { font-size: 16px; text-underline-offset: 4px; }
.hero__media { position: relative; align-self: stretch; margin-right: calc(var(--gutter) * -1); }
.hero__media img {
  position: absolute; right: 0; bottom: -64px; height: calc(100% + 150px); width: auto; max-width: none;
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 22%), linear-gradient(to bottom, transparent 0, #000 22%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent 0, #000 22%), linear-gradient(to bottom, transparent 0, #000 22%);
  mask-composite: intersect;
  will-change: transform;
}
.hero__foot {
  position: absolute; left: var(--gutter); right: var(--gutter); bottom: 22px; z-index: 2;
  display: flex; justify-content: space-between; gap: 24px; font-size: 14px; color: var(--ink-2);
}
.hero__foot ul { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0; padding: 0; list-style: none; }
.hero__foot li + li::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 18px; vertical-align: middle; background: currentColor; }
.scrollbar { display: flex; align-items: center; gap: 14px; min-width: 260px; }
.scrollbar i { position: relative; flex: 1; height: 1px; background: var(--line); }
.scrollbar i b { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--ink); }

/* ---------- açıklama ---------- */
.statement { padding-block: clamp(110px, 16vw, 230px) clamp(90px, 12vw, 170px); }
.statement h2 { font-size: clamp(36px, 6.1vw, 96px); line-height: .98; max-width: 15.5em; letter-spacing: -0.045em; }
.statement h2 .w { color: #b6b9bd; transition: color .35s; }
.statement h2 .w.on { color: var(--ink); }
.statement__meta { margin-top: clamp(40px, 5vw, 70px); display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 28px; max-width: 980px; color: var(--ink-2); }
.statement__meta p { padding-top: 16px; border-top: 1px solid var(--line); }

/* ---------- peptit kartları ---------- */
.chains { padding-bottom: clamp(90px, 12vw, 170px); }
.chains__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 24px 60px; margin-bottom: clamp(40px, 5vw, 70px); }
.chains__head h2 { font-size: clamp(54px, 9.4vw, 150px); letter-spacing: -0.055em; }
.chains__head p { max-width: 27em; color: var(--ink-2); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 1.6vw, 26px); }
.card { background: var(--paper); border-radius: 4px; padding: clamp(20px, 2vw, 30px); display: flex; flex-direction: column; min-height: 100%; }
.card h3 { font-size: clamp(40px, 4.3vw, 70px); letter-spacing: -0.05em; }
.card__sub { display: flex; justify-content: space-between; gap: 12px; margin-top: 14px; font-size: 15px; color: var(--ink-2); }
.card__sub span:last-child { color: var(--ink); }
.card figure { margin: clamp(16px, 2vw, 30px) 0; display: grid; place-items: center; aspect-ratio: 1 / 1.05; overflow: hidden; position: relative; }
.card figure::after { content: ""; position: absolute; left: 50%; top: 85.2%; width: 30%; height: 3.2%; transform: translate(-50%, -50%); background: radial-gradient(closest-side, rgba(17,18,19,.22), rgba(17,18,19,0)); pointer-events: none; }
.card figure img { position: relative; z-index: 1; }
.card figure img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .8s var(--ease); }
.card:hover figure img { transform: translateY(-8px) rotate(-2deg); }
.card p { color: var(--ink-2); font-size: 16px; margin-top: auto; }
.card__dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; vertical-align: 1px; }
.chains__note { margin-top: 22px; font-size: 14px; color: var(--muted); }

/* ---------- koyu bölüm ---------- */
.dark { background: var(--dark); color: var(--on-dark); position: relative; overflow: hidden; }
.dark__hero { position: relative; min-height: 88svh; display: flex; align-items: center; }
.dark__hero img { position: absolute; right: 0; top: 50%; width: min(1180px, 92vw); transform: translateY(-50%); mix-blend-mode: screen; }
.dark__hero h2 { position: relative; font-size: clamp(56px, 10.5vw, 168px); letter-spacing: -0.055em; max-width: 7.2em; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid #26292c; }
.stat { padding: clamp(28px, 3.4vw, 54px) clamp(0px, 1.5vw, 26px) clamp(48px, 6vw, 96px) 0; }
.stat + .stat { padding-left: clamp(16px, 2vw, 30px); border-left: 1px solid #26292c; }
.stat b { display: block; font-weight: 500; font-size: clamp(54px, 6.8vw, 112px); letter-spacing: -0.055em; line-height: .9; }
.stat span { display: block; margin-top: 18px; color: var(--on-dark-muted); font-size: 16px; max-width: 17em; }

/* ---------- akış ---------- */
.flow { padding-block: clamp(100px, 13vw, 190px); }
.flow h2 { font-size: clamp(36px, 5vw, 76px); letter-spacing: -0.045em; max-width: 12em; }
.steps { margin-top: clamp(44px, 5vw, 80px); display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 1.6vw, 26px); }
.step { border-top: 1px solid var(--ink); padding-top: 22px; }
.step h3 { font-size: clamp(40px, 4.6vw, 76px); letter-spacing: -0.05em; }
.step p { margin-top: 18px; color: var(--ink-2); max-width: 22em; }

/* ---------- form ---------- */
.contact { background: var(--paper); padding: clamp(90px, 11vw, 160px) 0; }
section[id] { scroll-margin-top: 70px; }
.contact__grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(40px, 6vw, 110px); align-items: start; }
.contact h2 { font-size: clamp(64px, 10vw, 160px); letter-spacing: -0.055em; }
.contact__lead { margin-top: 30px; max-width: 26em; color: var(--ink-2); font-size: 18px; }
.contact__aside { margin-top: 40px; display: grid; gap: 10px; font-size: 15px; color: var(--muted); max-width: 26em; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 18px; }
.field { display: grid; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 500; color: var(--ink-2); }
.field label em { font-style: normal; color: var(--muted); font-weight: 400; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 54px; padding: 14px 16px;
  font: inherit; font-size: 17px; color: var(--ink);
  background: var(--bg); border: 1px solid transparent; border-radius: var(--radius);
  transition: border-color .2s, background-color .2s;
  -webkit-appearance: none; appearance: none;
}
.field select {
  padding-right: 44px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%23111213' stroke-width='1.6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 18px center;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--line); }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); background: var(--paper); }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--err); background: #fbf1f0; }
.field .err { display: none; font-size: 14px; color: var(--err); }
.field.has-error .err { display: block; }
.consent { grid-column: 1 / -1; display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; font-size: 15px; color: var(--ink-2); }
.consent input { width: 22px; height: 22px; margin: 1px 0 0; accent-color: var(--ink); cursor: pointer; }
.consent.has-error { color: var(--err); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form__foot { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; margin-top: 6px; }
.form__status { font-size: 15px; }
.form__status.is-error { color: var(--err); }
.form__done { display: none; padding: 34px; border-radius: var(--radius); background: var(--bg); }
.form__done h3 { font-size: clamp(40px, 4.5vw, 64px); letter-spacing: -0.05em; }
.form__done p { margin-top: 16px; color: var(--ink-2); max-width: 30em; }
.is-sent .form { display: none; }
.is-sent .form__done { display: block; }

/* ---------- alt ---------- */
.foot { background: var(--dark); color: var(--on-dark-muted); padding: 60px 0 40px; font-size: 14px; }
.foot__mark { color: var(--on-dark); font-weight: 500; font-size: clamp(64px, 16vw, 260px); letter-spacing: -0.06em; line-height: .8; margin-bottom: 44px; }
.foot__row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px 40px; border-top: 1px solid #26292c; padding-top: 22px; }
.foot__row p { max-width: 60em; }
.foot a { color: var(--on-dark); }

/* ---------- belirme ---------- */
.rv { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.rv.in { opacity: 1; transform: none; }
.rv-d1 { transition-delay: .08s; } .rv-d2 { transition-delay: .16s; }
.no-js .rv { opacity: 1; transform: none; }
.no-js .statement h2 .w { color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  .statement h2 .w { color: var(--ink); transition: none; }
  .card figure img { transition: none; }
}

/* ---------- dar ekran ---------- */
@media (max-width: 1080px) {
  .cards, .steps { grid-template-columns: 1fr 1fr; }
  .cards .card:last-child { grid-column: 1 / -1; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid #26292c; }
  .contact__grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 16px; }
  .top { padding: 14px var(--gutter); }
  .top nav .hide-s { display: none; }
  .brand { font-size: 21px; }
  .hero { grid-template-columns: 1fr; align-items: start; padding-top: 92px; padding-bottom: 0; min-height: auto; }
  .hero__text { padding-left: 0; }
  .hero h1 { font-size: clamp(76px, 25vw, 150px); }
  .hero__media { height: 108vw; margin: 6px calc(var(--gutter) * -1) 0; }
  .hero__media img { bottom: 0; height: 100%; right: 50%; transform: translateX(50%); -webkit-mask-image: linear-gradient(to right, transparent 0, #000 16%, #000 84%, transparent 100%), linear-gradient(to bottom, transparent 0, #000 22%, #000 88%, transparent 100%); -webkit-mask-composite: source-in; mask-image: linear-gradient(to right, transparent 0, #000 16%, #000 84%, transparent 100%), linear-gradient(to bottom, transparent 0, #000 22%, #000 88%, transparent 100%); mask-composite: intersect; }
  .hero__foot { position: static; padding: 18px 0 22px; flex-direction: column; }
  .scrollbar { display: none; }
  .cards, .steps { grid-template-columns: 1fr; }
  .cards .card:last-child { grid-column: auto; }
  .card figure { aspect-ratio: 1 / .9; }
  .dark__hero { min-height: auto; flex-direction: column; align-items: stretch; padding: 110px 0 30px; }
  .dark__hero img { position: static; width: 140%; max-width: none; transform: none; margin: 10px 0 0 -20%; }
  .stats { grid-template-columns: 1fr; }
  .stat, .stat + .stat { padding-left: 0; border-left: 0; padding-bottom: 36px; }
  .stat + .stat { border-top: 1px solid #26292c; }
  .form { grid-template-columns: 1fr; }
}
.consent .err { display: block; margin-top: 4px; color: var(--err); }
.consent .err:empty { display: none; }
.form__done:focus { outline: none; }

/* ---------- menü: orta genişlik ---------- */
@media (max-width: 1080px) { .top nav .hide-m { display: none; } }

/* ---------- içerik sayfaları ---------- */
.doc__head { padding-top: clamp(120px, 14vw, 190px); padding-bottom: clamp(40px, 5vw, 70px); }
.doc__head h1 { font-size: clamp(56px, 10vw, 160px); letter-spacing: -0.055em; line-height: .88; max-width: 10em; }
.doc__lead { margin-top: clamp(22px, 2.6vw, 36px); max-width: 34em; font-size: clamp(18px, 1.5vw, 22px); color: var(--ink-2); line-height: 1.45; }
.doc__meta { margin-top: 20px; font-size: 14px; color: var(--muted); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 4px 10px; margin: 0 0 clamp(22px, 3vw, 40px); padding: 0; list-style: none; font-size: 14px; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: 10px; color: var(--line); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.doc__grid { display: grid; grid-template-columns: minmax(200px, 270px) minmax(0, 760px); gap: clamp(30px, 6vw, 110px); align-items: start; padding-bottom: clamp(80px, 10vw, 140px); }
.doc__grid--single { grid-template-columns: minmax(0, 760px); }
.toc { position: sticky; top: 92px; display: grid; gap: 22px; font-size: 15px; }
.toc summary { list-style: none; font-weight: 500; padding-bottom: 12px; border-bottom: 1px solid var(--ink); cursor: default; }
.toc summary::-webkit-details-marker { display: none; }
.toc ol { margin: 12px 0 0; padding: 0; list-style: none; display: grid; gap: 2px; }
.toc a { display: block; padding: 6px 0; color: var(--ink-2); text-decoration: none; line-height: 1.35; }
.toc a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.btn--sm { min-height: 44px; padding: 0 18px; font-size: 15px; justify-self: start; }

.prose { font-size: 18px; line-height: 1.65; color: var(--ink-2); }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2.2em; color: var(--ink); font-size: clamp(32px, 3.4vw, 48px); line-height: 1; letter-spacing: -0.045em; scroll-margin-top: 90px; }
.prose h2 + * { margin-top: .8em; }
.prose h3 { color: var(--ink); font-size: 22px; line-height: 1.2; letter-spacing: -0.02em; }
.prose strong { color: var(--ink); font-weight: 500; }
.prose a { color: var(--ink); text-decoration-color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.prose a:hover { color: var(--accent); }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose li + li { margin-top: .45em; }
.prose li::marker { color: var(--muted); }
.prose table { width: 100%; border-collapse: collapse; font-size: 16px; line-height: 1.45; background: var(--paper); border-radius: 4px; overflow: hidden; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 12px 16px; border-bottom: 1px solid var(--bg); }
.prose thead th { color: var(--ink); font-weight: 500; background: #f6f6f7; }
.prose tbody th { color: var(--ink); font-weight: 500; white-space: nowrap; }
.timeline { list-style: none; padding: 0 !important; border-left: 1px solid var(--line); }
.timeline li { padding-left: 22px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: -4px; top: .7em; width: 7px; height: 7px; border-radius: 50%; background: var(--ink); }
.timeline b { display: inline-block; min-width: 5.5em; color: var(--ink); font-weight: 500; }

.answer { background: var(--paper); border-radius: 4px; padding: clamp(22px, 2.4vw, 34px); border-left: 3px solid var(--accent); }
.answer h2 { margin: 0 0 12px; font-size: 15px; letter-spacing: 0; line-height: 1.3; color: var(--accent); }
.answer p { color: var(--ink); font-size: 19px; line-height: 1.55; }

.facts { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 0 20px; align-items: center; background: var(--paper); border-radius: 4px; padding: 14px 18px 14px 6px; }
.facts figure { margin: 0; }
.facts figure img { width: 100%; mix-blend-mode: multiply; }
.facts table { background: none; font-size: 15px; }
.facts th, .facts td { padding: 8px 10px; border-bottom: 1px solid var(--bg); }
.facts tr:last-child th, .facts tr:last-child td { border-bottom: 0; }
.facts th { color: var(--muted) !important; font-weight: 400 !important; }

.prose details { border-top: 1px solid var(--line); }
.prose details:last-of-type { border-bottom: 1px solid var(--line); }
.prose details + details { margin-top: 0; }
.prose summary { position: relative; padding: 18px 40px 18px 0; color: var(--ink); font-weight: 500; cursor: pointer; list-style: none; line-height: 1.35; }
.prose summary::-webkit-details-marker { display: none; }
.prose summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 10px; height: 10px; border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor; transform: translateY(-70%) rotate(45deg); transition: transform .2s var(--ease); }
.prose details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.prose details p { padding: 0 40px 20px 0; }

.nudge { margin-top: 3em; background: var(--dark); color: var(--on-dark-muted); border-radius: 4px; padding: clamp(26px, 3vw, 40px); display: grid; gap: 22px; justify-items: start; }
.nudge strong { color: var(--on-dark); }
.nudge .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.nudge .btn:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.sources { margin-top: 3em; font-size: 15px; line-height: 1.55; }
.sources h2 { font-size: clamp(28px, 2.6vw, 36px); margin-top: 0; }
.sources ol { margin-top: 16px; }
.disc { font-size: 14px; color: var(--muted); }

.related { padding-bottom: clamp(90px, 11vw, 150px); }
.related > h2 { font-size: clamp(40px, 5vw, 76px); letter-spacing: -0.05em; margin-bottom: clamp(26px, 3vw, 44px); }
.rel-grid, .guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 1.6vw, 26px); }
.guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.rel, .guide { display: flex; flex-direction: column; gap: 14px; padding: clamp(22px, 2.2vw, 32px); background: var(--paper); border-radius: 4px; text-decoration: none; transition: background-color .2s; }
.rel h3, .guide h3 { font-size: clamp(30px, 3vw, 46px); letter-spacing: -0.045em; }
.guide h3 { font-size: clamp(36px, 4vw, 64px); }
.rel p, .guide p { color: var(--ink-2); font-size: 16px; }
.rel span, .guide span, .card__more { margin-top: auto; display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 500; }
.rel span svg, .guide span svg, .card__more svg { width: 14px; height: 14px; transition: transform .2s var(--ease); }
.rel:hover span svg, .guide:hover span svg, .card--link:hover .card__more svg { transform: translateX(4px); }
.rel:hover, .guide:hover { background: #fafafa; }
.guides { padding-block: clamp(100px, 13vw, 190px) 0; }

.card--link { text-decoration: none; }
.card--link h2 { font-size: clamp(40px, 4.3vw, 70px); letter-spacing: -0.05em; }
.card__more { margin-top: 18px; }
.card--guide { background: var(--dark); color: var(--on-dark); }
.card--guide p, .card--guide .card__sub { color: var(--on-dark-muted); }
.card--guide .card__sub span:last-child { color: var(--on-dark); }
.card--guide p { margin-top: 40px !important; }
.hub { padding-bottom: clamp(90px, 11vw, 150px); }
.hub .cards { row-gap: clamp(14px, 1.6vw, 26px); }
.compare { margin-top: clamp(70px, 9vw, 130px); }
.compare h2 { font-size: clamp(40px, 5vw, 76px); letter-spacing: -0.05em; margin-bottom: 30px; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.compare table { width: 100%; min-width: 640px; border-collapse: collapse; background: var(--paper); font-size: 16px; }
.compare th, .compare td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--bg); vertical-align: top; }
.compare thead th { font-weight: 500; background: #f6f6f7; }
.compare tbody th { font-weight: 500; }
.compare .disc { margin-top: 16px; }

.faq { padding-bottom: clamp(100px, 13vw, 190px); display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(30px, 6vw, 110px); align-items: start; }
.faq h2 { font-size: clamp(54px, 8vw, 130px); letter-spacing: -0.055em; }
.faq__list { font-size: 17px; }

.foot__cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 30px; margin-bottom: 50px; }
.foot__cols h2 { color: var(--on-dark); font-size: 15px; letter-spacing: 0; line-height: 1.3; margin-bottom: 14px; }
.foot__cols ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 15px; }
.foot__cols a { color: var(--on-dark-muted); text-decoration: none; }
.foot__cols a:hover { color: var(--on-dark); text-decoration: underline; text-underline-offset: 3px; }

.doc__head--404 { min-height: 70svh; }
.links404 { display: flex; flex-wrap: wrap; gap: 12px 28px; margin: 34px 0 0; padding: 0; list-style: none; font-size: 18px; }
.chains__head p a, .consent a { color: inherit; text-underline-offset: 3px; }

@media (max-width: 1080px) {
  .doc__grid { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; }
  .toc details:not([open]) summary { border-bottom: 1px solid var(--line); }
  .toc summary { cursor: pointer; }
  .rel-grid { grid-template-columns: 1fr 1fr; }
  .faq { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .prose { font-size: 17px; }
  .rel-grid, .guide-grid, .foot__cols { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; padding: 14px; }
  .facts figure { max-width: 140px; margin: 0 auto; }
  .prose table:not(.facts table) { display: block; overflow-x: auto; }
  .prose tbody th { white-space: normal; }
  .doc__head h1 { font-size: clamp(50px, 15vw, 96px); }
}
.toc .btn { color: var(--paper); padding: 0 18px; }
.toc .btn:hover { color: var(--paper); text-decoration: none; }
.foot__mark + .foot__cols { margin-top: 70px; }
@media (max-width: 760px) { .answer p { font-size: 17px; } }
.timeline li { display: grid; grid-template-columns: 6.5em minmax(0, 1fr); gap: 0 12px; }
.timeline b { min-width: 0; }

/* ---------- araştırma ürünleri ---------- */
@media (max-width: 420px) { .top nav .hide-xs { display: none; } }
.link { color: inherit; text-underline-offset: 4px; }
.rp-head { padding-bottom: clamp(20px, 3vw, 40px); }
.rp-points { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 26px 0 0; padding: 0; list-style: none; font-size: 15px; color: var(--ink-2); }
.rp-points li + li::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 18px; vertical-align: middle; background: currentColor; }
.rp-hero { margin: 0 auto clamp(40px, 6vw, 90px); }
.rp-hero img { width: 100%; border-radius: 4px; }

.prod { position: relative; }
.prod__link { text-decoration: none; }
.prod__link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.prod h2, .prod h3 { font-size: clamp(40px, 4.3vw, 70px); letter-spacing: -0.05em; }
.prod figure img { mix-blend-mode: multiply; }
.prod figure::after { display: none; }
.prod__mg { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; font-size: 14px; }
.prod__mg li { padding: 5px 10px; border: 1px solid var(--line); border-radius: 4px; color: var(--ink-2); }
.prod__act { position: relative; z-index: 2; margin-top: 18px; display: flex; align-items: center; gap: 22px; }
.prod__act .link { font-size: 15px; }
.prod-calc { justify-content: flex-start; }
.prod-calc p { margin-top: 40px !important; }
.cards--rel { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.pd { padding-top: clamp(100px, 11vw, 150px); padding-bottom: clamp(60px, 8vw, 110px); }
.pd__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(30px, 5vw, 90px); align-items: start; }
.pd__media { position: sticky; top: 90px; }
.pd__img { margin: 0; background: #e8e9eb; border-radius: 4px; display: grid; place-items: center; aspect-ratio: 1 / 1.08; overflow: hidden; }
.pd__img img { width: 100%; height: 100%; object-fit: contain; }
.pd__thumbs { display: flex; gap: 10px; margin-top: 12px; }
.pd__thumb { width: 74px; padding: 0; border: 1px solid transparent; border-radius: 4px; background: #e8e9eb; cursor: pointer; }
.pd__thumb.is-on { border-color: var(--ink); }
.pd__thumb img { width: 100%; border-radius: 3px; }
.pd__note { margin-top: 10px; font-size: 13px; color: var(--muted); }
.pd__kind { font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.pd h1 { margin-top: 12px; font-size: clamp(64px, 8.4vw, 136px); letter-spacing: -0.055em; line-height: .86; }
.pd__short { margin-top: 20px; font-size: 19px; color: var(--ink-2); }
.pd__mini { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 6px 34px; margin: 26px 0 0; padding: 18px 0; border-block: 1px solid var(--line); }
.pd__mini dt { font-size: 13px; color: var(--muted); }
.pd__mini dd { margin: 2px 0 0; font-size: 16px; font-variant-numeric: tabular-nums; }
.pd__buy { margin-top: 28px; }
.pd__buy fieldset { border: 0; margin: 0; padding: 0; }
.pd__buy legend { padding: 0; margin-bottom: 10px; font-size: 14px; font-weight: 500; color: var(--ink-2); }
.vars { display: flex; flex-wrap: wrap; gap: 10px; }
.var input { position: absolute; opacity: 0; pointer-events: none; }
.var span { display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); font-size: 17px; cursor: pointer; transition: border-color .2s; }
.var span:hover { border-color: var(--ink-2); }
.var input:checked + span { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.var input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 3px; }
.pd__row { display: flex; flex-wrap: wrap; align-items: end; gap: 14px; margin-top: 22px; }
.qty__l { display: block; margin-bottom: 10px; font-size: 14px; font-weight: 500; color: var(--ink-2); }
.qty__c { display: flex; height: 52px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); overflow: hidden; }
.qty__c button { width: 46px; border: 0; background: none; font: inherit; font-size: 20px; cursor: pointer; color: var(--ink); }
.qty__c button:hover { background: var(--bg); }
.qty__c input { width: 56px; border: 0; text-align: center; font: inherit; font-size: 17px; -moz-appearance: textfield; background: none; }
.qty__c input::-webkit-inner-spin-button, .qty__c input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.pd__cta { flex: 1; min-width: 200px; }
.pd__price { margin-top: 12px; font-size: 14px; color: var(--muted); }
.pd__calc { margin-top: 26px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 18px 22px; background: var(--dark); color: var(--on-dark-muted); border-radius: 4px; text-decoration: none; font-size: 15px; }
.pd__calc b { display: block; color: var(--on-dark); font-weight: 500; font-size: 20px; letter-spacing: -0.02em; margin-bottom: 2px; }
.pd__calc svg { width: 18px; height: 18px; flex: none; color: var(--on-dark); transition: transform .2s var(--ease); }
.pd__calc:hover svg { transform: translateX(4px); }
.pd__trust { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 22px 0 0; padding: 0; list-style: none; font-size: 14px; color: var(--ink-2); }
.pd__trust li + li::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 18px; vertical-align: middle; background: currentColor; }
.pd__body { max-width: 760px; margin-top: clamp(50px, 7vw, 100px); }
.pd__body .prose > h2:first-child { margin-top: 0; }
.spec tbody th, .spec th { width: 34%; color: var(--muted) !important; font-weight: 400 !important; white-space: normal !important; }
.spec td { color: var(--ink); }
.ruo { margin-top: 2.4em; padding: clamp(22px, 2.4vw, 30px); border-left: 3px solid var(--clay); background: var(--paper); border-radius: 4px; }
.ruo h2 { margin: 0 0 10px !important; font-size: 15px !important; letter-spacing: 0 !important; line-height: 1.3 !important; color: var(--ink); }
.ruo p { font-size: 16px; }

.ask .form { grid-template-columns: 1fr 1fr; }
.field--wide { grid-column: 1 / 2; }
.ask__pick { margin: 36px 0 0; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 18px; align-items: center; max-width: 420px; padding: 12px 18px 12px 12px; background: var(--bg); border-radius: 4px; }
.ask__pick img { width: 120px; border-radius: 3px; mix-blend-mode: multiply; }
.ask__pick figcaption { display: grid; gap: 4px; font-size: 22px; letter-spacing: -0.03em; line-height: 1.15; }
.ask__pick b { font-weight: 500; font-size: 15px; letter-spacing: 0; color: var(--ink-2); }

/* doz hesaplayıcı */
.pc { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 60px); align-items: start; padding-bottom: clamp(60px, 8vw, 110px); }
.pc__form { display: grid; gap: 24px; background: var(--paper); border-radius: 4px; padding: clamp(22px, 2.6vw, 36px); }
.pc-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.pc-chip { min-height: 38px; padding: 0 14px; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); font: inherit; font-size: 15px; color: var(--ink-2); cursor: pointer; }
.pc-chip:hover { border-color: var(--ink-2); }
.pc-chip.is-on { border-color: var(--ink); color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.pc-dose { display: grid; grid-template-columns: minmax(0, 1fr) 110px; gap: 10px; }
.pc__out { position: sticky; top: 90px; background: var(--dark); color: var(--on-dark); border-radius: 4px; padding: clamp(24px, 3vw, 44px); }
.pc__lbl { font-size: 15px; color: var(--on-dark-muted); }
.pc__big { margin-top: 8px; font-weight: 500; font-size: clamp(90px, 11vw, 170px); letter-spacing: -0.055em; line-height: .85; font-variant-numeric: lining-nums tabular-nums; }
.pc__big small { font-size: 26px; letter-spacing: -0.02em; color: var(--on-dark-muted); }
.pc__syr { margin-top: 30px; }
.pc__syr svg { width: 100%; height: auto; display: block; }
.syr-barrel { fill: rgba(255,255,255,.04); stroke: #8b9095; stroke-width: 1.5; }
.syr-liquid { fill: var(--accent); opacity: .9; }
.syr-liquid.is-over { fill: var(--clay); }
.syr-stopper { fill: #2a2d30; }
.syr-plunger, .syr-rod, .syr-hub { fill: #5d6166; }
.syr-needle { stroke: #9a9ea3; stroke-width: 2; }
.syr-tick { stroke: #c9ccd0; stroke-width: 1; }
.syr-num { fill: var(--on-dark-muted); font-size: 15px; font-family: inherit; }
@media (max-width: 760px) { .syr-num { font-size: 22px; } }
.ask__pick.is-empty img { visibility: hidden; }
.pc__fill { margin-top: 12px; font-size: 15px; color: var(--on-dark-muted); }
.pc__warn { margin-top: 14px; padding: 12px 14px; border-radius: 4px; background: rgba(201,142,114,.16); color: #f0c9b6; font-size: 15px; }
.pc__stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 30px 0 0; border-top: 1px solid #26292c; }
.pc__stats div { padding: 18px 12px 0 0; }
.pc__stats div + div { padding-left: 16px; border-left: 1px solid #26292c; }
.pc__stats dt { font-size: 14px; color: var(--on-dark-muted); }
.pc__stats dd { margin: 6px 0 0; font-size: 22px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.pc__ask { margin-top: 30px; background: var(--paper); color: var(--ink); border-color: var(--paper); }
.pc__ask:hover { color: var(--paper); }
.pc-how { max-width: 760px; padding-bottom: clamp(90px, 11vw, 150px); }
.pc-how h2 { margin-top: 0; }

/* ana sayfa bandı */
.rp-band { padding-bottom: clamp(90px, 12vw, 170px); }
.rp-band__box { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 60px); align-items: center; background: var(--paper); border-radius: 4px; padding: clamp(24px, 3vw, 48px); }
.rp-band h2 { font-size: clamp(48px, 7vw, 112px); letter-spacing: -0.055em; }
.rp-band p { margin-top: 20px; color: var(--ink-2); max-width: 28em; }
.rp-band .hero__cta { margin-top: 28px; }
.rp-band img { width: 100%; mix-blend-mode: multiply; }

@media (max-width: 1080px) {
  .pd__grid, .pc, .rp-band__box { grid-template-columns: 1fr; }
  .pd__media, .pc__out { position: static; }
  .pd__media { max-width: 560px; }
  .cards--rel { grid-template-columns: 1fr 1fr; }
  .foot__cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .cards--rel, .ask .form { grid-template-columns: 1fr; }
  .field--wide { grid-column: auto; }
  .pd__mini { grid-template-columns: 1fr 1fr; }
  .pc__stats { grid-template-columns: 1fr; }
  .pc__stats div + div { padding-left: 0; border-left: 0; border-top: 1px solid #26292c; margin-top: 14px; }
  .prod__act { flex-wrap: wrap; }
  .ask__pick { grid-template-columns: 84px minmax(0, 1fr); }
  .ask__pick img { width: 84px; }
}
@media (max-width: 760px) {
  .rp-points, .pd__trust { flex-direction: column; gap: 6px; }
  .rp-points li::before, .pd__trust li::before, .rp-points li + li::before, .pd__trust li + li::before { content: ""; display: inline-block; width: 5px; height: 5px; margin-right: 12px; vertical-align: middle; background: currentColor; }
}