/* HEIC to JPG — visual layer only. Conversion JS untouched. */

:root{
  --blue-50:#eff6ff;
  --blue-100:#dbeafe;
  --blue-500:#3b82f6;
  --blue-600:#2563eb;
  --blue-700:#1d4ed8;
  --navy-900:#0b1220;
  --navy-800:#111c34;
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#64748b;
  --line:#e2e8f0;
  --bg:#f4f7fd;
  --card:#ffffff;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --shadow-sm:0 1px 2px rgba(11,18,32,.05), 0 4px 12px rgba(11,18,32,.05);
  --shadow-lg:0 2px 6px rgba(11,18,32,.06), 0 18px 40px rgba(11,18,32,.10);
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;overflow-x:hidden;
}
a,button,select,input{-webkit-tap-highlight-color:transparent}
img{max-width:100%;display:block}

/* ---------- shared shells ---------- */
.shell{width:100%;max-width:1080px;margin:0 auto;padding:0 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.site-header .shell{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand .mark{display:inline-flex;width:30px;height:30px;flex:0 0 auto}
.brand .wordmark{font-weight:800;font-size:1.02rem;letter-spacing:-.02em}
.brand .wordmark em{font-style:normal;font-weight:600;color:var(--blue-600);margin:0 .18rem}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{
  color:var(--ink-2);text-decoration:none;font-size:.9rem;font-weight:500;
  padding:8px 12px;border-radius:8px;min-height:40px;display:inline-flex;align-items:center;
}
.site-nav a:hover{background:var(--blue-50);color:var(--blue-700)}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(900px 380px at 15% -10%, rgba(59,130,246,.45), transparent 60%),
    linear-gradient(155deg,#0b1220 0%,#12224a 52%,#1d4ed8 100%);
  color:#fff;padding:44px 0 60px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(600px 300px at 70% 0%,#000,transparent 70%);
}
.hero .shell{position:relative;z-index:1}
.hero-copy{max-width:640px;margin-bottom:22px}
.hero h1{font-size:2.5rem;font-weight:800;letter-spacing:-.03em;line-height:1.12;margin-bottom:.5rem}
.hero .lede{color:#c7dbff;font-size:1.02rem;max-width:34em}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.hero-badges span{
  display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.20);color:#eaf1ff;font-size:.8rem;font-weight:600;
  padding:6px 11px;border-radius:999px;
}
.hero-badges svg{width:14px;height:14px;flex:0 0 auto}

/* ---------- converter card ---------- */
.converter{padding:22px;box-shadow:var(--shadow-lg);border-radius:var(--r-lg)}
.converter .drop{
  border:2px dashed #cbd5e1;border-radius:var(--r-md);background:#fbfdff;
  padding:34px 18px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;
  min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;
}
.converter .drop:hover{border-color:var(--blue-500);background:var(--blue-50)}
.converter .drop.over{border-color:var(--blue-600);background:var(--blue-50)}
.converter .drop svg.ico{width:38px;height:38px;color:var(--blue-600);margin-bottom:.3rem}
.converter .drop p{color:#475569;font-size:.95rem;line-height:1.7}
.converter .drop p span{color:var(--blue-600);font-weight:600}
.qrow{display:flex;align-items:center;gap:.7rem;margin-top:16px}
.qrow label{font-size:.88rem;color:#475569;white-space:nowrap;font-weight:600}
.qrow select{
  flex:1;min-height:44px;padding:.5rem .7rem;border:1px solid #d1d5db;border-radius:10px;
  font-size:16px;background:#fff;cursor:pointer;color:var(--ink);
}
.note{
  margin-top:14px;font-size:.82rem;color:#475569;display:flex;gap:.4rem;align-items:flex-start;
  background:var(--blue-50);border:1px solid var(--blue-100);border-radius:var(--r-sm);padding:10px 12px;
}
.note svg{width:16px;height:16px;color:#15803d;flex:0 0 auto;margin-top:2px}
.busy{display:none;margin-top:16px;text-align:center;color:var(--muted);font-size:.9rem}
.busy .spin{
  display:inline-block;width:1.1rem;height:1.1rem;border:2.5px solid var(--blue-100);
  border-top-color:var(--blue-600);border-radius:50%;animation:rot .7s linear infinite;
  vertical-align:middle;margin-right:.45rem;
}
@keyframes rot{to{transform:rotate(360deg)}}
.err{display:none;margin-top:16px;padding:.85rem 1rem;background:#fef2f2;border:1px solid #fecaca;border-radius:var(--r-sm);color:#b91c1c;font-size:.85rem}
.result{display:none;width:100%;margin-top:18px;text-align:center}
.result img{max-width:100%;max-height:340px;border-radius:12px;box-shadow:var(--shadow-sm);margin:0 auto .9rem}
.result .info{font-size:.85rem;color:var(--muted);margin-bottom:.9rem;padding:0}
.dl{
  display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.75rem 1.9rem;
  background:var(--blue-600);color:#fff;border-radius:11px;font-size:.98rem;font-weight:600;
  text-decoration:none;transition:background .15s,transform .05s;
}
.dl:hover{background:var(--blue-700)}
.dl:active{transform:translateY(1px)}
.again{
  margin-left:.7rem;min-height:44px;font-size:.9rem;color:var(--muted);text-decoration:underline;
  cursor:pointer;background:none;border:none;display:inline-flex;align-items:center;
}

/* ---------- trust strip ---------- */
.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:-30px auto 0;position:relative;z-index:2}
.trust .item{padding:16px 16px 18px}
.trust .item svg{width:20px;height:20px;color:var(--blue-600);margin-bottom:8px}
.trust .item h3{font-size:.95rem;font-weight:700;margin-bottom:2px}
.trust .item p{font-size:.85rem;color:var(--muted);margin:0}

/* ---------- content blocks ---------- */
.block{padding:46px 0 0}
.block h2{font-size:1.4rem;font-weight:800;letter-spacing:-.02em;margin-bottom:14px}
.block .panel{padding:26px 28px}
.block h3{font-size:1.02rem;font-weight:700;margin:1.4rem 0 .35rem}
.block h3:first-child{margin-top:0}
.block p,.block li{color:#3f4a5a;font-size:.95rem;margin-bottom:.5rem}
.block ol,.block ul{padding-left:1.35rem}
.block code{background:var(--blue-50);color:var(--blue-700);padding:.1rem .35rem;border-radius:4px;font-size:.88rem}
.faq-item{padding:18px 20px;margin-bottom:12px;border-radius:var(--r-md)}
.faq-item h3{margin:0 0 .25rem}

/* ---------- sub pages ---------- */
.wrap{
  max-width:760px;margin:30px auto;padding:30px 28px 32px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);
}
.wrap .card{padding:0}
.wrap h1{font-size:1.9rem;font-weight:800;letter-spacing:-.025em;margin:0 0 4px}
.wrap .updated{color:#94a3b8;font-size:.85rem}
.wrap h2{font-size:1.12rem;font-weight:700;margin:1.8rem 0 .4rem}
.wrap p,.wrap li{color:#3f4a5a;font-size:.95rem;margin-bottom:.6rem}
.wrap ul{padding-left:1.3rem}
.wrap a{color:var(--blue-600)}
.wrap .lead{font-size:1.02rem;color:var(--ink-2)}
.wrap .box{background:var(--blue-50);border:1px solid var(--blue-100);border-radius:var(--r-md);padding:16px 18px;margin:18px 0}
.wrap .box p:last-child{margin-bottom:0}
.mail{
  display:flex;align-items:center;justify-content:center;min-height:56px;margin:18px 0;padding:14px 18px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  color:var(--blue-600);text-decoration:none;font-size:1.06rem;font-weight:700;box-shadow:var(--shadow-sm);
}
.mail:hover{border-color:var(--blue-500)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:#94a3b8;margin-top:56px;padding:38px 0 30px}
.site-footer .shell{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:flex-start}
.site-footer .fbrand{display:flex;flex-direction:column;gap:10px;max-width:290px}
.site-footer .fbrand .brand{color:#fff}
.site-footer .fbrand p{font-size:.85rem;line-height:1.6}
.site-footer nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.site-footer nav a{
  color:#cbd5e1;text-decoration:none;font-size:.9rem;min-height:40px;display:inline-flex;align-items:center;
}
.site-footer nav a:hover{color:#fff}
.foot-note{
  border-top:1px solid rgba(255,255,255,.10);margin-top:26px;padding-top:18px;
  font-size:.8rem;color:#7d8ba1;text-align:center;
}

/* ---------- mobile ---------- */
@media(max-width:640px){
  .hero{padding:30px 0 48px}
  .hero h1{font-size:1.85rem}
  .hero .lede{font-size:.95rem}
  .converter{padding:16px}
  .converter .drop{min-height:164px;padding:26px 14px}
  .qrow{flex-direction:column;align-items:stretch;gap:6px}
  .qrow select{width:100%;min-height:48px}
  .trust{grid-template-columns:1fr;gap:10px;margin-top:16px}
  .block{padding-top:34px}
  .block .panel{padding:20px 18px}
  .block h2{font-size:1.24rem}
  .result img{max-height:260px}
  .dl{width:100%;max-width:340px}
  .again{margin:.7rem 0 0;width:100%;max-width:340px;justify-content:center}
  .wrap{padding:24px 16px 4px}
  .wrap .card{padding:20px 18px 22px}
  .wrap h1{font-size:1.5rem}
  .site-header .shell{height:56px}
  .site-nav a{padding:8px 9px;font-size:.86rem}
  .brand .wordmark{font-size:.95rem}
  .site-footer{padding:30px 0 24px}
}

/* ---------- guides list (auto-generated, see guides.js) ---------- */
.guide-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.guide-list li{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s;
}
.guide-list li:hover{border-color:var(--blue-600);box-shadow:var(--shadow-lg)}
.guide-list a{
  display:block;padding:14px 18px;color:var(--navy-900);text-decoration:none;
  font-size:.98rem;font-weight:650;line-height:1.4;
}
.guide-list a:hover{color:var(--blue-600)}
.guide-list a::after{content:" →";color:var(--blue-600)}