/* ==========================================================================
   SmartVidFX Studio — shared stylesheet
   Proof-of-concept marketing site. Dark studio theme, no external images.
   ========================================================================== */

:root{
  --bg:#0a0c11;
  --bg-2:#0e111a;
  --surface:#141926;
  --surface-2:#1b2231;
  --surface-3:#232c3e;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --text:#e9edf5;
  --text-2:#c2cbdc;
  --muted:#8f9ab2;
  --accent:#2ee6a8;
  --accent-dim:#1fb686;
  --accent-ink:#04180f;
  --violet:#7c5cff;
  --gold:#ffc857;
  --rose:#ff6b8b;
  --radius:14px;
  --radius-lg:20px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
  --maxw:1220px;
  --font:'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* Subtle studio backdrop */
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 500px at 12% -6%, rgba(46,230,168,.10), transparent 60%),
    radial-gradient(800px 520px at 92% 0%, rgba(124,92,255,.12), transparent 62%),
    radial-gradient(700px 600px at 50% 110%, rgba(46,230,168,.05), transparent 60%);
}

body > *{position:relative;z-index:1}

img,svg{max-width:100%;display:block}

a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}

h1,h2,h3,h4{margin:0 0 .5em;line-height:1.18;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(1.9rem,3.6vw,2.85rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.15rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

.muted{color:var(--muted)}
.small{font-size:.86rem}
.center{text-align:center}
.nowrap{white-space:nowrap}
.hide{display:none !important}

/* ---------- Language-aware typography ---------- */
html[lang="zh"] body{letter-spacing:.005em}
html[lang="zh"] h1,html[lang="zh"] h2,html[lang="zh"] h3{letter-spacing:0}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:.8rem 1.35rem;
  border-radius:999px;
  border:1px solid transparent;
  font-weight:650;
  font-size:.95rem;
  font-family:inherit;
  cursor:pointer;
  transition:transform .12s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
  white-space:nowrap;
  text-align:center;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

.btn-primary{
  background:linear-gradient(180deg,var(--accent),var(--accent-dim));
  color:var(--accent-ink);
  box-shadow:0 8px 24px rgba(46,230,168,.22);
}
.btn-primary:hover{color:var(--accent-ink);box-shadow:0 12px 30px rgba(46,230,168,.32)}

.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(46,230,168,.06)}

.btn-solid{background:var(--surface-2);border-color:var(--line);color:var(--text)}
.btn-solid:hover{background:var(--surface-3);color:var(--text)}

.btn-block{display:flex;width:100%}
.btn-lg{padding:1rem 1.8rem;font-size:1.02rem}
.btn-sm{padding:.55rem 1rem;font-size:.85rem}

/* ==========================================================================
   Header / nav
   ========================================================================== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(10,12,17,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:1.4rem;height:66px}

.brand{display:flex;align-items:center;gap:.6rem;font-weight:750;font-size:1.03rem;letter-spacing:-.02em}
.brand:hover{color:var(--text)}
.brand-mark{width:30px;height:30px;flex:0 0 30px}
.brand-dot{color:var(--accent)}

.nav-links{display:flex;align-items:center;gap:1.35rem;margin-left:.6rem}
.nav-links a{font-size:.93rem;color:var(--text-2);font-weight:550}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--accent)}

.nav-right{margin-left:auto;display:flex;align-items:center;gap:.7rem}

.lang-toggle{
  display:inline-flex;align-items:center;
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:3px;
  background:rgba(255,255,255,.03);
}
.lang-toggle button{
  border:0;background:transparent;color:var(--muted);
  font-family:inherit;font-size:.82rem;font-weight:600;
  padding:.3rem .7rem;border-radius:999px;cursor:pointer;
  transition:background .15s ease,color .15s ease;
}
.lang-toggle button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}

.nav-toggle{display:none;background:none;border:0;color:var(--text);cursor:pointer;padding:6px}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:.82rem;color:var(--muted);padding:1.1rem 0 .2rem}
.breadcrumb span[aria-hidden]{opacity:.5}
.breadcrumb a:hover{color:var(--accent)}

/* ==========================================================================
   Item page layout (home)
   ========================================================================== */
.item-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:2.2rem;align-items:start;padding-bottom:3rem}
.item-main{min-width:0}

.item-title{margin:.25rem 0 .55rem;font-size:clamp(1.65rem,3vw,2.35rem)}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:.65rem;color:var(--muted);font-size:.92rem;margin-bottom:1.3rem}
.avatar{
  width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--violet));
  color:#06140e;font-weight:800;font-size:.8rem;
  display:grid;place-items:center;flex:0 0 30px;
}
.byline strong{color:var(--text-2);font-weight:650}

.pill{
  display:inline-flex;align-items:center;gap:.35rem;
  background:rgba(46,230,168,.12);
  border:1px solid rgba(46,230,168,.3);
  color:var(--accent);
  font-size:.74rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:.24rem .6rem;border-radius:999px;
}
.pill-violet{background:rgba(124,92,255,.14);border-color:rgba(124,92,255,.34);color:#b9a6ff}
.pill-gold{background:rgba(255,200,87,.12);border-color:rgba(255,200,87,.3);color:var(--gold)}

/* ---------- Preview player ---------- */
.player{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:#05070b;
  box-shadow:var(--shadow);
}
.player-stage{position:relative;aspect-ratio:16/9;width:100%}
.player-stage svg{width:100%;height:100%;display:block}

.player-badge{
  position:absolute;top:14px;left:14px;
  display:flex;gap:.45rem;align-items:center;
  background:rgba(5,7,11,.72);
  border:1px solid var(--line);
  border-radius:999px;padding:.3rem .7rem;
  font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-2);
  backdrop-filter:blur(8px);
}
.rec-dot{width:7px;height:7px;border-radius:50%;background:var(--rose);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}

.player-bar{
  display:flex;align-items:center;gap:.9rem;
  padding:.7rem .9rem;
  background:linear-gradient(180deg,rgba(20,25,38,.9),rgba(11,14,22,.95));
  border-top:1px solid var(--line);
}
.play-btn{
  width:34px;height:34px;flex:0 0 34px;border-radius:50%;
  background:var(--accent);color:var(--accent-ink);
  border:0;display:grid;place-items:center;cursor:pointer;
}
.scrub{flex:1;height:5px;border-radius:999px;background:var(--surface-3);position:relative;overflow:hidden}
.scrub i{position:absolute;inset:0 62% 0 0;background:linear-gradient(90deg,var(--accent-dim),var(--accent));border-radius:999px}
.timecode{font-variant-numeric:tabular-nums;font-size:.8rem;color:var(--muted);letter-spacing:.04em}

.thumb-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:.55rem;margin-top:.7rem}
.thumb{
  aspect-ratio:16/10;border-radius:10px;border:1px solid var(--line);
  overflow:hidden;position:relative;cursor:pointer;
  transition:border-color .18s ease,transform .18s ease;
}
.thumb:hover{border-color:var(--accent);transform:translateY(-2px)}
.thumb.is-active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.thumb span{
  position:absolute;left:0;right:0;bottom:0;
  font-size:.6rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;
  padding:.3rem .4rem;background:linear-gradient(180deg,transparent,rgba(0,0,0,.78));color:#dbe4f2;
}

/* ---------- Buy box (sticky sidebar) ---------- */
.rail{position:sticky;top:86px;display:flex;flex-direction:column;gap:1rem}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:1.4rem;
}
.card-tight{padding:1.15rem}

.buybox .price-line{display:flex;align-items:baseline;gap:.4rem;margin-bottom:.15rem}
.buybox .price{font-size:2rem;font-weight:800;letter-spacing:-.03em}
.buybox .per{color:var(--muted);font-size:.9rem}
.buybox .sub{color:var(--muted);font-size:.84rem;margin-bottom:1.05rem}

.check-list{list-style:none;margin:0 0 1.15rem;padding:0;display:flex;flex-direction:column;gap:.55rem}
.check-list li{display:flex;gap:.6rem;align-items:flex-start;font-size:.9rem;color:var(--text-2)}
.check-list li::before{
  content:"";flex:0 0 17px;height:17px;margin-top:3px;border-radius:50%;
  background:rgba(46,230,168,.16);
  box-shadow:inset 0 0 0 1px rgba(46,230,168,.4);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232ee6a8' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size:11px;background-repeat:no-repeat;background-position:center;
}

.signin-line{text-align:center;font-size:.85rem;color:var(--muted);margin:.85rem 0 0}
.signin-line a{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:3px}

.attrs{list-style:none;margin:0;padding:0}
.attrs li{display:flex;justify-content:space-between;gap:1rem;padding:.62rem 0;border-bottom:1px solid var(--line);font-size:.875rem}
.attrs li:last-child{border-bottom:0}
.attrs dt,.attrs .k{color:var(--muted)}
.attrs .v{color:var(--text-2);font-weight:600;text-align:right}
.card h4{font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:.85rem;font-weight:700}

/* ==========================================================================
   Content sections
   ========================================================================== */
.section{padding:3.4rem 0}
.section-tight{padding:2.4rem 0}
.section-head{max-width:720px;margin-bottom:1.9rem}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{color:var(--muted);font-size:1.02rem;margin:0}
.eyebrow{
  display:inline-block;font-size:.75rem;font-weight:750;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:.7rem;
}

.rule{border:0;border-top:1px solid var(--line);margin:0}

.prose{max-width:74ch;color:var(--text-2)}
.prose h3{color:var(--text);margin-top:1.8rem}
.prose ul{padding-left:1.15rem;margin:0 0 1.1rem}
.prose li{margin-bottom:.45rem}
.prose strong{color:var(--text)}

/* ---------- Feature cards ---------- */
.grid{display:grid;gap:1rem}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

.feature{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:1.5rem;
  transition:border-color .2s ease,transform .2s ease;
}
.feature:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.feature h3{margin-bottom:.45rem}
.feature p{color:var(--muted);font-size:.92rem;margin:0}
.icon-tile{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:1rem;
  background:linear-gradient(140deg,rgba(46,230,168,.18),rgba(124,92,255,.18));
  border:1px solid var(--line-strong);
}
.icon-tile svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.icon-tile.v svg{stroke:#b9a6ff}
.icon-tile.g svg{stroke:var(--gold)}

/* ---------- Steps ---------- */
.steps{counter-reset:step;display:grid;gap:1rem;grid-template-columns:repeat(3,minmax(0,1fr))}
.step{
  position:relative;padding:1.5rem 1.4rem 1.4rem;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
}
.step::before{
  counter-increment:step;content:counter(step);
  display:grid;place-items:center;
  width:32px;height:32px;border-radius:9px;margin-bottom:.9rem;
  background:rgba(46,230,168,.14);border:1px solid rgba(46,230,168,.32);
  color:var(--accent);font-weight:800;font-size:.95rem;
}
.step h3{font-size:1.02rem;margin-bottom:.35rem}
.step p{color:var(--muted);font-size:.9rem;margin:0}

/* ---------- Spec / included lists ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.55rem 2rem}
.spec-grid li{display:flex;gap:.6rem;font-size:.92rem;color:var(--text-2);align-items:flex-start}
.spec-grid{list-style:none;padding:0;margin:0}
.spec-grid li::before{content:"";flex:0 0 6px;height:6px;margin-top:.62rem;border-radius:50%;background:var(--accent)}

/* ---------- Compat chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:0}
.chip{
  display:inline-flex;align-items:center;gap:.5rem;
  border:1px solid var(--line);background:var(--surface);
  border-radius:10px;padding:.55rem .85rem;font-size:.86rem;color:var(--text-2);
}
.chip b{
  width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  font-size:.66rem;font-weight:800;letter-spacing:.02em;
  background:linear-gradient(140deg,rgba(46,230,168,.22),rgba(124,92,255,.22));
  color:var(--text);border:1px solid var(--line-strong);
}

/* ---------- Tags ---------- */
.tags{display:flex;flex-wrap:wrap;gap:.45rem;list-style:none;padding:0;margin:0}
.tags a{
  display:inline-block;font-size:.8rem;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:.3rem .75rem;
  background:rgba(255,255,255,.02);
}
.tags a:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Related grid ---------- */
.related{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.rel-card{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  background:var(--surface);transition:transform .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.rel-art{aspect-ratio:16/9;position:relative}
.rel-body{padding:.85rem 1rem 1rem}
.rel-body h4{font-size:.95rem;margin:0 0 .25rem;font-weight:650}
.rel-body p{margin:0;font-size:.8rem;color:var(--muted)}

/* ---------- Voice / waveform ---------- */
.wave{display:flex;align-items:flex-end;gap:3px;height:56px}
.wave i{
  flex:1;background:linear-gradient(180deg,var(--accent),rgba(46,230,168,.25));
  border-radius:2px;animation:bob 1.6s ease-in-out infinite;
}
@keyframes bob{0%,100%{height:18%}50%{height:100%}}

.voice-row{display:flex;align-items:center;gap:1rem;padding:.85rem 1rem;border:1px solid var(--line);border-radius:12px;background:var(--surface-2)}
.voice-row .who{font-size:.86rem;font-weight:650;min-width:112px}
.voice-row .who small{display:block;color:var(--muted);font-weight:450;font-size:.75rem}

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band{
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  padding:2.4rem;
  background:
    radial-gradient(600px 240px at 18% 0%, rgba(46,230,168,.16), transparent 65%),
    radial-gradient(520px 260px at 88% 100%, rgba(124,92,255,.18), transparent 65%),
    var(--surface);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1.5rem;
}
.cta-band h2{margin-bottom:.35rem}
.cta-band p{margin:0;color:var(--muted)}
.cta-actions{display:flex;flex-wrap:wrap;gap:.7rem}

/* ==========================================================================
   Pricing page
   ========================================================================== */
.billing-toggle{
  display:inline-flex;align-items:center;gap:.25rem;
  padding:5px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
  margin:0 auto;
}
.billing-toggle button{
  border:0;background:transparent;color:var(--muted);cursor:pointer;
  font-family:inherit;font-size:.9rem;font-weight:650;padding:.5rem 1.1rem;border-radius:999px;
  transition:background .16s ease,color .16s ease;display:inline-flex;align-items:center;gap:.5rem;
}
.billing-toggle button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
.save-tag{
  font-size:.7rem;font-weight:800;letter-spacing:.04em;padding:.1rem .45rem;border-radius:999px;
  background:rgba(255,200,87,.18);color:var(--gold);border:1px solid rgba(255,200,87,.35);
}
.billing-toggle button[aria-pressed="true"] .save-tag{background:rgba(4,24,15,.2);color:var(--accent-ink);border-color:rgba(4,24,15,.25)}

.plan-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem;max-width:880px;margin:2rem auto 0}

.plan{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:1.8rem;
}
.plan.featured{
  border-color:rgba(46,230,168,.45);
  box-shadow:0 0 0 1px rgba(46,230,168,.18),0 24px 60px rgba(46,230,168,.10);
  background:linear-gradient(180deg,rgba(46,230,168,.055),transparent 38%),var(--surface);
}
.plan-badge{
  position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:var(--accent-ink);
  font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  padding:.28rem .8rem;border-radius:999px;white-space:nowrap;
}
.plan-name{font-size:1.25rem;margin-bottom:.3rem}
.plan-desc{color:var(--muted);font-size:.9rem;min-height:3.2em;margin-bottom:1.1rem}
.plan-price{display:flex;align-items:baseline;gap:.35rem;margin-bottom:.2rem}
.plan-price .amount{font-size:2.9rem;font-weight:800;letter-spacing:-.04em;line-height:1}
.plan-price .cur{font-size:.95rem;color:var(--muted);font-weight:650}
.plan-price .per{font-size:.95rem;color:var(--muted)}
.plan-note{color:var(--muted);font-size:.84rem;min-height:2.6em;margin-bottom:1.25rem}
.plan .btn{margin-bottom:1.35rem}
.plan-feats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.plan-feats li{display:flex;gap:.6rem;font-size:.9rem;color:var(--text-2);align-items:flex-start}
.plan-feats li::before{
  content:"";flex:0 0 16px;height:16px;margin-top:3px;border-radius:50%;
  background:rgba(46,230,168,.15);box-shadow:inset 0 0 0 1px rgba(46,230,168,.38);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232ee6a8' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size:10px;background-repeat:no-repeat;background-position:center;
}
.plan-feats li.muted-feat{color:var(--muted)}
.plan-feats li.muted-feat::before{background-color:rgba(255,255,255,.05);box-shadow:inset 0 0 0 1px var(--line);background-image:none}
.plan-foot{margin-top:1.3rem;padding-top:1rem;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted)}

.enterprise-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:1.2rem;justify-content:space-between;
  max-width:880px;margin:1.2rem auto 0;padding:1.4rem 1.6rem;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:rgba(255,255,255,.015);
}
.enterprise-band h3{margin:0 0 .2rem;font-size:1.05rem}
.enterprise-band p{margin:0;color:var(--muted);font-size:.88rem}

/* ---------- Comparison table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface)}
table.compare{width:100%;border-collapse:collapse;min-width:620px}
table.compare th,table.compare td{padding:.9rem 1.15rem;text-align:left;border-bottom:1px solid var(--line);font-size:.9rem}
table.compare thead th{
  font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  background:rgba(255,255,255,.02);position:sticky;top:0;
}
table.compare td:not(:first-child),table.compare th:not(:first-child){text-align:center;width:22%}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare td:first-child{color:var(--text-2)}
.tick{color:var(--accent);font-weight:800}
.cross{color:var(--muted);opacity:.55}
.row-group td{
  background:rgba(255,255,255,.028);font-size:.74rem;letter-spacing:.11em;text-transform:uppercase;
  color:var(--muted);font-weight:750;
}

/* ---------- Value columns ---------- */
.value-col h3{font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:.9rem}
.value-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.4rem}
.value-col li{font-size:.92rem;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface)}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{
  cursor:pointer;list-style:none;padding:1.15rem 3rem 1.15rem 1.35rem;
  font-weight:650;font-size:.98rem;position:relative;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:1.35rem;top:50%;width:11px;height:11px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .2s ease;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--accent)}
.faq summary:hover{color:var(--accent)}
.faq .answer{padding:0 1.35rem 1.3rem;color:var(--muted);font-size:.92rem;max-width:72ch}
.faq .answer p:last-child{margin-bottom:0}

/* ==========================================================================
   Checkout / create account
   ========================================================================== */
.checkout-header{border-bottom:1px solid var(--line);background:rgba(10,12,17,.9)}
.checkout-header .nav{height:62px}
.secure-note{display:flex;align-items:center;gap:.45rem;font-size:.82rem;color:var(--muted)}
.secure-note svg{width:15px;height:15px;stroke:var(--accent);fill:none;stroke-width:1.9}

.stepbar{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap;justify-content:center;padding:1.7rem 0 .4rem;font-size:.84rem}
.stepbar .s{display:inline-flex;align-items:center;gap:.5rem;color:var(--muted)}
.stepbar .s b{
  width:23px;height:23px;border-radius:50%;display:grid;place-items:center;
  font-size:.74rem;font-weight:800;background:var(--surface-2);border:1px solid var(--line);color:var(--muted);
}
.stepbar .s.on{color:var(--text)}
.stepbar .s.on b{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.stepbar .sep{width:26px;height:1px;background:var(--line-strong)}

.checkout-grid{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:2rem;align-items:start;padding:1.6rem 0 4rem}

.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:1.9rem}
.field{margin-bottom:1.05rem}
.field label{display:block;font-size:.85rem;font-weight:650;margin-bottom:.4rem;color:var(--text-2)}
.field input,.field select{
  width:100%;padding:.8rem .95rem;border-radius:11px;
  background:var(--bg-2);border:1px solid var(--line-strong);color:var(--text);
  font-family:inherit;font-size:.95rem;transition:border-color .16s ease,box-shadow .16s ease;
}
.field input::placeholder{color:#6b7689}
.field input:focus,.field select:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,230,168,.14)}
.field .hint{font-size:.78rem;color:var(--muted);margin-top:.35rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

.pw-wrap{position:relative}
.pw-toggle{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  background:none;border:0;color:var(--muted);font-family:inherit;font-size:.78rem;
  cursor:pointer;padding:.35rem .55rem;border-radius:8px;font-weight:600;
}
.pw-toggle:hover{color:var(--accent)}

.pw-meter{display:flex;gap:4px;margin-top:.5rem}
.pw-meter i{flex:1;height:4px;border-radius:999px;background:var(--surface-3);transition:background .2s ease}
.pw-meter i.on-1{background:var(--rose)}
.pw-meter i.on-2{background:var(--gold)}
.pw-meter i.on-3{background:var(--accent)}

.checkbox{display:flex;gap:.65rem;align-items:flex-start;font-size:.85rem;color:var(--muted);margin-bottom:1.25rem}
.checkbox input{
  appearance:none;-webkit-appearance:none;flex:0 0 18px;height:18px;margin-top:2px;
  border:1px solid var(--line-strong);border-radius:5px;background:var(--bg-2);cursor:pointer;
  transition:background .15s ease,border-color .15s ease;
}
.checkbox input:checked{
  background:var(--accent);border-color:var(--accent);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2304180f' stroke-width='3.6' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size:12px;background-repeat:no-repeat;background-position:center;
}
.checkbox a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px}
.checkbox a:hover{color:var(--accent)}

.divider{display:flex;align-items:center;gap:1rem;margin:1.5rem 0;color:var(--muted);font-size:.8rem}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}

.oauth{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}
.oauth button{
  display:flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem .6rem;border-radius:11px;cursor:pointer;
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-2);
  font-family:inherit;font-size:.85rem;font-weight:600;transition:border-color .16s ease,background .16s ease;
}
.oauth button:hover{border-color:var(--line-strong);background:var(--surface-3)}
.oauth .glyph{
  width:20px;height:20px;border-radius:5px;display:grid;place-items:center;
  font-size:.62rem;font-weight:800;color:#06140e;flex:0 0 20px;
}
.g-google{background:#e9edf5;color:#1a1d23}
.g-wechat{background:#2ee6a8}
.g-apple{background:#e9edf5;color:#1a1d23}

/* ---------- Order summary ---------- */
.summary{position:sticky;top:86px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.summary-head{padding:1.2rem 1.4rem;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.summary-head h3{margin:0;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.summary-body{padding:1.3rem 1.4rem}
.sum-plan{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:1rem}
.sum-plan .name{font-size:1.08rem;font-weight:700;margin:0 0 .15rem}
.sum-plan .cycle{font-size:.82rem;color:var(--muted);margin:0}
.sum-plan .amt{font-size:1.08rem;font-weight:750;white-space:nowrap}
.sum-lines{list-style:none;margin:0;padding:1rem 0;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:.55rem}
.sum-lines li{display:flex;justify-content:space-between;gap:1rem;font-size:.88rem;color:var(--muted)}
.sum-lines li .pos{color:var(--text-2)}
.sum-lines li.discount span:last-child{color:var(--accent);font-weight:650}
.sum-total{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;padding-top:1rem;border-top:1px solid var(--line)}
.sum-total .lbl{font-weight:700}
.sum-total .big{font-size:1.5rem;font-weight:800;letter-spacing:-.03em}
.renew-note{font-size:.78rem;color:var(--muted);margin:.9rem 0 0;line-height:1.5}
.summary-foot{padding:1.1rem 1.4rem;border-top:1px solid var(--line);background:rgba(255,255,255,.015)}
.guarantee{display:flex;gap:.6rem;align-items:flex-start;font-size:.82rem;color:var(--text-2);margin-bottom:.9rem}
.guarantee svg{width:17px;height:17px;flex:0 0 17px;margin-top:2px;stroke:var(--accent);fill:none;stroke-width:1.9}
.paylogos{display:flex;flex-wrap:wrap;gap:.35rem}
.paylogos span{
  font-size:.66rem;font-weight:700;letter-spacing:.03em;color:var(--muted);
  border:1px solid var(--line);border-radius:6px;padding:.22rem .45rem;background:var(--bg-2);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);padding:2.6rem 0 2rem;margin-top:1rem}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem}
.footer-grid h4{font-size:.76rem;letter-spacing:.11em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem}
.footer-grid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}
.footer-grid a{font-size:.88rem;color:var(--text-2)}
.footer-about p{font-size:.88rem;color:var(--muted);max-width:34ch;margin:.8rem 0 0}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;align-items:center;
  margin-top:2.2rem;padding-top:1.3rem;border-top:1px solid var(--line);
  font-size:.82rem;color:var(--muted);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:1020px){
  .item-layout{grid-template-columns:1fr}
  .rail{position:static;flex-direction:column}
  .checkout-grid{grid-template-columns:1fr}
  .summary{position:static;order:-1}
  .footer-grid{grid-template-columns:1fr 1fr}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:760px){
  .nav-links{
    position:absolute;top:66px;left:0;right:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:var(--bg-2);border-bottom:1px solid var(--line);
    padding:.4rem 20px 1rem;margin:0;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:.75rem 0;border-bottom:1px solid var(--line)}
  .nav-toggle{display:block;order:-1}
  .nav{gap:.75rem}
  .nav-right{gap:.5rem}
  .nav-right .btn{display:none}            /* CTA repeats in-page on mobile */
  .brand span{font-size:.95rem}
  .secure-note span{display:none}
  .grid-3,.grid-2,.grid-4,.steps,.related,.plan-grid,.spec-grid,.field-row{grid-template-columns:1fr}
  .thumb-strip{grid-template-columns:repeat(3,1fr)}
  .thumb-strip .thumb:nth-child(n+4){display:none}
  .section{padding:2.5rem 0}
  .cta-band{padding:1.7rem;text-align:left}
  .form-card{padding:1.3rem}
  .oauth{grid-template-columns:1fr}
  .plan{padding:1.5rem}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ==========================================================================
   Hero photo treatment (replaces the original inline SVG artwork)
   ========================================================================== */
.player-img{width:100%;height:100%;object-fit:cover;display:block}

.track-box{position:absolute;left:38.2%;top:26.5%;width:11.5%;height:24%;pointer-events:none}
.track-box svg{width:100%;height:100%;display:block;filter:drop-shadow(0 1px 4px rgba(0,0,0,.6))}
.track-label{
  position:absolute;left:50%;transform:translateX(-50%);bottom:calc(100% + 7px);
  font-size:.62rem;font-weight:800;letter-spacing:.11em;color:var(--accent);
  text-shadow:0 1px 6px rgba(0,0,0,.85);white-space:nowrap;
}

.hud{
  position:absolute;bottom:14px;
  font-size:.72rem;letter-spacing:.03em;color:#cfd7e6;
  background:rgba(5,7,11,.62);border:1px solid rgba(255,255,255,.14);
  border-radius:10px;padding:.35rem .7rem;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.hud-l{left:14px}
.hud-r{right:14px}

@media (max-width:760px){
  .hud,.track-label{display:none}
  .track-box{opacity:.75}
}