/* ============================================
   TTLand SnapTik — style.css
   Dark/Light theme · Mobile-first · v1.0
   ============================================ */
:root{
  --pink:#fe2c55;
  --cyan:#00e5d0;
  --grad:linear-gradient(135deg,#fe2c55 0%,#a445ff 50%,#00e5d0 100%);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1140px;
  --font:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
[data-theme="light"]{
  --bg:#f7f8fc;
  --bg-2:#ffffff;
  --bg-3:#eef0f7;
  --text:#171923;
  --text-2:#555b6e;
  --border:#e3e6ef;
  --shadow:0 8px 30px rgba(23,25,35,.08);
  --hero-glow:radial-gradient(60% 50% at 50% 0%,rgba(254,44,85,.10),transparent 70%);
}
[data-theme="dark"]{
  --bg:#0d0f17;
  --bg-2:#151826;
  --bg-3:#1d2133;
  --text:#f2f4fa;
  --text-2:#9aa1b5;
  --border:#272c40;
  --shadow:0 8px 30px rgba(0,0,0,.35);
  --hero-glow:radial-gradient(60% 50% at 50% 0%,rgba(254,44,85,.16),transparent 70%);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  transition:background .3s,color .3s;
}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  background:color-mix(in srgb,var(--bg) 78%,transparent);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.02em}
.logo img,.logo svg{width:34px;height:34px}
.logo .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{padding:8px 14px;border-radius:99px;font-size:.92rem;font-weight:600;color:var(--text-2);transition:.2s}
.main-nav a:hover,.main-nav a.active{color:var(--text);background:var(--bg-3)}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--border);
  background:var(--bg-2);color:var(--text);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;font-size:1.05rem;transition:.2s;
}
.icon-btn:hover{border-color:var(--pink)}
/* language dropdown */
.lang-wrap{position:relative}
.lang-btn{gap:6px;width:auto;padding:0 12px;font-size:.85rem;font-weight:700;border-radius:99px}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:190px;
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  box-shadow:var(--shadow);padding:6px;display:none;max-height:320px;overflow:auto;
}
.lang-menu.open{display:block}
.lang-menu a{display:flex;gap:10px;align-items:center;padding:8px 12px;border-radius:8px;font-size:.9rem;font-weight:500}
.lang-menu a:hover{background:var(--bg-3)}
.lang-menu a.current{color:var(--pink);font-weight:700}
/* mobile nav */
.nav-toggle{display:none}
@media(max-width:820px){
  .main-nav{
    display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;
    background:var(--bg-2);border-bottom:1px solid var(--border);padding:10px 16px 16px;
  }
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 14px}
  .nav-toggle{display:inline-flex}
}

/* ---------- Hero / Downloader ---------- */
.hero{position:relative;padding:56px 0 44px;text-align:center;background:var(--hero-glow)}
.hero h1{font-size:clamp(1.7rem,4.5vw,2.7rem);font-weight:800;letter-spacing:-.03em;line-height:1.25}
.hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero .sub{max-width:640px;margin:14px auto 0;color:var(--text-2);font-size:1.05rem}
/* tabs */
.dl-tabs{display:flex;justify-content:center;gap:8px;margin:28px 0 16px;flex-wrap:wrap}
.dl-tab{
  padding:9px 20px;border-radius:99px;border:1px solid var(--border);
  background:var(--bg-2);color:var(--text-2);font-weight:700;font-size:.92rem;cursor:pointer;transition:.2s;
}
.dl-tab.active{background:var(--grad);color:#fff;border-color:transparent}
/* download box */
.dl-box{
  max-width:760px;margin:0 auto;padding:3px;border-radius:20px;
  background:var(--grad);background-size:200% 200%;
  animation:gradShift 6s ease infinite;
}
@keyframes gradShift{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.dl-inner{
  display:flex;gap:10px;background:var(--bg-2);border-radius:17px;padding:10px;
  flex-wrap:wrap;
}
.dl-inner input{
  flex:1;min-width:220px;border:none;outline:none;background:transparent;
  color:var(--text);font-size:1rem;padding:12px 14px;font-family:var(--font);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:12px;border:none;cursor:pointer;
  font-weight:700;font-size:1rem;font-family:var(--font);transition:.2s;
}
.btn-primary{background:var(--grad);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-ghost{background:var(--bg-3);color:var(--text)}
.btn-ghost:hover{background:var(--border)}
.dl-note{margin-top:14px;font-size:.85rem;color:var(--text-2)}
/* result area */
.dl-result{max-width:760px;margin:20px auto 0;display:none;text-align:left}
.dl-result.show{display:block}
.dl-card{
  display:flex;gap:16px;background:var(--bg-2);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);flex-wrap:wrap;align-items:center;
}
.dl-card img{width:110px;border-radius:10px}
.dl-thumb{width:120px;flex-shrink:0;object-fit:cover;aspect-ratio:9/16;max-height:200px}
.dl-info{flex:1;min-width:220px}
.dl-info h3{font-size:1.05rem;line-height:1.4;margin-bottom:6px}
.dl-author{font-size:.9rem;color:var(--text-2);margin-bottom:4px}
.dl-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.dl-photos{max-width:760px;margin:14px auto 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
.dl-photo{display:block;border-radius:10px;overflow:hidden;border:1px solid var(--border);position:relative;transition:.2s}
.dl-photo:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--pink)}
.dl-photo img{width:100%;aspect-ratio:3/4;object-fit:cover;display:block}
.dl-photo::after{content:"⬇";position:absolute;right:8px;bottom:8px;width:28px;height:28px;border-radius:50%;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.85rem}
.spinner{
  width:22px;height:22px;border-radius:50%;border:3px solid var(--border);
  border-top-color:var(--pink);animation:spin .8s linear infinite;display:inline-block;vertical-align:middle;
}
@keyframes spin{to{transform:rotate(360deg)}}
/* stats */
.stats{display:flex;justify-content:center;gap:clamp(20px,6vw,70px);margin-top:44px;flex-wrap:wrap}
.stat b{display:block;font-size:1.5rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:.85rem;color:var(--text-2)}

/* ---------- Sections ---------- */
section{padding:56px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 36px}
.section-head h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800;letter-spacing:-.02em}
.section-head p{color:var(--text-2);margin-top:10px}
.eyebrow{
  display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;
  color:var(--pink);margin-bottom:10px;
}
/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.step{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 22px;position:relative;transition:.25s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--pink)}
.step .num{
  width:42px;height:42px;border-radius:12px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.1rem;margin-bottom:14px;
}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.92rem;color:var(--text-2)}
/* features */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.feature{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:.25s;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.feature .ico{font-size:1.7rem;margin-bottom:12px;display:block}
.feature h3{font-size:1rem;margin-bottom:6px}
.feature p{font-size:.9rem;color:var(--text-2)}
/* tool cards row */
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.tool-card{
  display:block;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:.25s;
}
.tool-card:hover{border-color:var(--cyan);transform:translateY(-4px);box-shadow:var(--shadow)}
.tool-card .ico{font-size:1.6rem}
.tool-card h3{margin:10px 0 6px;font-size:1rem}
.tool-card p{font-size:.88rem;color:var(--text-2)}
.tool-card .more{display:inline-block;margin-top:12px;font-size:.85rem;font-weight:700;color:var(--pink)}
/* content prose */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-size:1.5rem;margin:36px 0 14px;letter-spacing:-.02em}
.prose h3{font-size:1.15rem;margin:26px 0 10px}
.prose p{margin-bottom:14px;color:var(--text-2)}
.prose p strong,.prose li strong{color:var(--text)}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--text-2)}
.prose li{margin-bottom:8px}
.prose a{color:var(--pink);font-weight:600}
.prose a:hover{text-decoration:underline}
.prose img{border-radius:var(--radius);margin:10px 0}
.prose blockquote{
  border-left:4px solid var(--pink);background:var(--bg-2);padding:14px 18px;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin:0 0 16px;color:var(--text-2);
}
.prose table{width:100%;border-collapse:collapse;margin-bottom:16px;font-size:.92rem}
.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left}
.prose th{background:var(--bg-3)}
/* FAQ */
.faq{max-width:760px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;background:var(--bg-2);overflow:hidden}
.faq-item summary{
  cursor:pointer;padding:16px 20px;font-weight:700;font-size:.98rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.3rem;color:var(--pink);transition:.2s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 20px 16px;color:var(--text-2);font-size:.94rem}
/* blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.post-card{
  background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:.25s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.post-thumb{aspect-ratio:16/9;background:var(--grad);display:flex;align-items:center;justify-content:center;font-size:2.4rem}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-body .meta{font-size:.78rem;color:var(--text-2);font-weight:600;text-transform:uppercase;letter-spacing:.06em}
.post-body h3{font-size:1.02rem;line-height:1.45}
.post-body p{font-size:.88rem;color:var(--text-2);flex:1}
.post-body .read{font-size:.85rem;font-weight:700;color:var(--pink)}
/* breadcrumb */
.breadcrumb{font-size:.85rem;color:var(--text-2);padding:18px 0 0}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--pink)}
.breadcrumb span{color:var(--text)}
/* article header */
.article-head{padding:28px 0 8px;max-width:760px;margin:0 auto}
.article-head h1{font-size:clamp(1.5rem,3.6vw,2.1rem);letter-spacing:-.02em;line-height:1.3}
.article-head .meta{margin-top:12px;color:var(--text-2);font-size:.88rem;display:flex;gap:14px;flex-wrap:wrap}
/* CTA band */
.cta-band{
  background:var(--grad);border-radius:var(--radius);padding:36px 28px;text-align:center;color:#fff;
}
.cta-band h2{font-size:1.4rem;margin-bottom:10px}
.cta-band p{opacity:.9;margin-bottom:18px}
.cta-band .btn{background:#fff;color:#171923}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--border);background:var(--bg-2);padding:44px 0 24px;margin-top:30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h4{font-size:.9rem;margin-bottom:14px;text-transform:uppercase;letter-spacing:.08em}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:9px}
.footer-grid a{font-size:.9rem;color:var(--text-2)}
.footer-grid a:hover{color:var(--pink)}
.footer-about p{font-size:.88rem;color:var(--text-2);margin-top:12px;max-width:320px}
.footer-bottom{
  border-top:1px solid var(--border);margin-top:32px;padding-top:20px;
  font-size:.82rem;color:var(--text-2);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
/* utility */
.text-center{text-align:center}
.mt-2{margin-top:16px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}