/* Sill Note tanıtım sitesi — Apple ürün sayfası dili: açık zemin, bol boşluk, tek vurgu rengi. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(fonts/inter-latin-ext-wght-normal.woff2) format('woff2-variations');
  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';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(fonts/inter-latin-wght-normal.woff2) format('woff2-variations');
  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 {
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --line: #d2d2d7;
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --blue: #0071e3;
  --blue-hover: #0077ed;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.47 'Inter', -apple-system, 'Segoe UI', system-ui, sans-serif;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 22px; }
.narrow { max-width: 720px; }

/* Japonca / Çince: Inter'de bu harfler yok, sistemin fontuna düşülür */
html[lang='ja'] body { font-family: 'Inter', 'Yu Gothic UI', 'Meiryo', 'Hiragino Sans', system-ui, sans-serif; }
html[lang='zh-CN'] body { font-family: 'Inter', 'Microsoft YaHei UI', 'PingFang SC', system-ui, sans-serif; }

/* Üst çubuk: yarı saydam, bulanık (Apple gibi) */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.nav-in { height: 52px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; font-size: 19px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand img { width: 26px; height: 26px; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--ink); opacity: 0.8; }
.nav-links a:hover { opacity: 1; text-decoration: none; }
.nav-links a.coffee-pill {
  opacity: 1; padding: 5px 13px; border-radius: 980px; background: #ffdd00; color: #1d1d1f; font-weight: 600;
}
.nav-links a.coffee-pill:hover { filter: brightness(0.96); }
/* Kaynak kod: yazılımcılar içine bakabilsin diye göz önünde */
.nav-links a.source-pill {
  opacity: 1; display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 13px; border-radius: 980px; background: var(--ink); color: #fff; font-weight: 600;
}
.nav-links a.source-pill:hover { background: #000; }
.lang {
  font: inherit; font-size: 13px; font-weight: 500; color: var(--ink);
  background: var(--bg-2); border: 0; border-radius: 980px; padding: 5px 26px 5px 12px; cursor: pointer;
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236e6e73' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
}

/* Ana bölüm */
.hero { text-align: center; padding: 72px 0 40px; background: linear-gradient(#fff, var(--bg-2)); }
.hero h1 { font-size: clamp(40px, 7vw, 80px); line-height: 1.05; letter-spacing: -0.035em; font-weight: 700; margin: 0; }
.lead { font-size: clamp(19px, 2.2vw, 24px); color: var(--ink-2); max-width: 720px; margin: 20px auto 0; line-height: 1.4; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.fine { color: var(--ink-2); font-size: 14px; margin: 14px 0 0; }
.alt-dl { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; font-size: 14px; color: var(--ink-2); margin: 16px 0 0; }
.steps { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; margin: 44px auto 0; max-width: 1240px; }
.steps figure { margin: 0; }
.steps figcaption { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 16px; font-size: 19px; font-weight: 600; letter-spacing: -0.015em; }
.steps figcaption b { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--blue); color: #fff; display: grid; place-items: center; font-size: 15px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 980px; font-size: 17px; font-weight: 500;
}
.btn:hover { text-decoration: none; }
.btn.primary { background: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-hover); }
.btn.ghost { color: var(--ink-2); border: 1px solid var(--line); }
.btn.coffee { background: #ffdd00; color: #1d1d1f; font-weight: 600; }
.btn.coffee:hover { filter: brightness(0.97); }

/* 1.3'te yeni: ekran paylaşımında gizle — en önemli yenilik, kahramanın hemen altında */
.new { text-align: center; padding: 80px 0 64px; background: #fff; }
.new h2 { font-size: clamp(32px, 5vw, 56px); line-height: 1.06; letter-spacing: -0.035em; font-weight: 700; margin: 0; }
.new .steps { margin-top: 40px; }
.new .fine { max-width: 720px; margin: 22px auto 0; }
.steps figcaption b.ok { background: #34c759; }
.steps figcaption b.rec { background: #ff3b30; font-size: 12px; }

/* Özellikler: yazı + görsel, sırayla yer değiştirir */
.features { background: var(--bg-2); padding: 40px 0 80px; }
.feat {
  display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: 48px; align-items: center;
  background: #fff; border-radius: 28px; padding: 44px 56px; margin-top: 24px; overflow: hidden;
}
.feat.flip { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); }
.feat.flip .txt { order: 2; }
/* Panel görüntüsü kendi gölgesini taşıyor (şeffaf PNG) */
.feat img { width: auto; max-height: 560px; margin: 0 auto; }
.eyebrow { color: var(--blue); font-weight: 600; font-size: 17px; margin: 0 0 8px; }
.feat h2 { font-size: clamp(28px, 3.4vw, 44px); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 16px; font-weight: 700; }
.feat p { color: var(--ink-2); font-size: 19px; margin: 0; }

.langs { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); }
.lang-cloud { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.lang-cloud li { padding: 10px 18px; border-radius: 980px; background: var(--bg-2); font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }
.support { text-align: center; padding: 90px 0; }
.support h2 { font-size: clamp(30px, 4vw, 48px); letter-spacing: -0.03em; margin: 0 0 12px; }
.support p { color: var(--ink-2); font-size: 21px; margin: 0 0 28px; }

.faq { background: var(--bg-2); padding: 70px 0; }
.faq h2 { font-size: 32px; letter-spacing: -0.02em; margin: 0 0 20px; text-align: center; }
details { background: #fff; border-radius: 16px; padding: 18px 22px; margin-top: 12px; }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--ink-2); margin: 12px 0 0; }

.foot { font-size: 13px; color: var(--ink-2); padding: 24px 0 40px; border-top: 1px solid rgba(0, 0, 0, 0.06); }
.foot-in { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.foot .links { display: flex; gap: 20px; }
.foot a { color: var(--ink-2); }

/* Gizlilik politikası sayfası */
.doc { padding: 60px 0 80px; }
.doc h1 { font-size: 44px; letter-spacing: -0.03em; margin: 0 0 6px; }
.doc .date { color: var(--ink-2); margin: 0 0 32px; }
.doc h2 { font-size: 22px; margin: 34px 0 8px; letter-spacing: -0.02em; }
.doc p, .doc li { color: #333336; }

@media (max-width: 760px) {
  .nav-links a:not(.coffee-pill):not(.source-pill) { display: none; }
  .nav-links a.source-pill { padding: 6px 9px; }
  .nav-links a.source-pill span { display: none; }
  /* Dar ekranda menü sığsın: kahve düğmesi sadece simge, marka tek satır */
  .nav-links a.coffee-pill { padding: 5px 10px; }
  .nav-links a.coffee-pill span { display: none; }
  .brand { white-space: nowrap; }
  .nav-links { gap: 8px; }
  .lang { max-width: 104px; }
  .feat, .feat.flip { grid-template-columns: minmax(0, 1fr); padding: 28px 22px; gap: 24px; }
  .feat img { max-height: 460px; }
  .nav-links { gap: 14px; }
  .feat.flip .txt { order: 0; }
  .hero { padding-top: 48px; }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 36px; }
}