/* SigoKit — hệ thống giao diện dùng chung cho mọi trang */
/* ============================================================
   SigoKit — Design tokens
   ============================================================ */
:root{
  --bg:#070910;
  --bg-soft:#0b0e17;
  --surface:#11141e;
  --surface-2:#171b28;
  --surface-3:#1e2333;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text:#eef1f8;
  --muted:#99a2b8;
  --faint:#6c7589;
  --brand:#6d5efc;
  --brand-2:#a855f7;
  --cyan:#22d3ee;
  --green:#34d399;
  --amber:#fbbf24;
  --pink:#f472b6;
  --header-bg:rgba(7,9,16,.72);
  --card-glow:rgba(109,94,252,.35);
  --shadow-sm:0 4px 14px -6px rgba(0,0,0,.6);
  --shadow:0 24px 60px -28px rgba(0,0,0,.85);
  --shadow-lg:0 40px 90px -40px rgba(0,0,0,.9);
  --r-sm:10px; --r:14px; --r-lg:20px; --r-xl:28px;
  --sans:"Inter",ui-sans-serif,system-ui,"Segoe UI",Roboto,Arial,sans-serif;
  --display:"Sora","Inter",ui-sans-serif,system-ui,sans-serif;
  --maxw:1240px;
}
[data-theme="light"]{
  --bg:#f5f7fc;
  --bg-soft:#eef1f8;
  --surface:#ffffff;
  --surface-2:#f4f6fb;
  --surface-3:#e9edf6;
  --line:rgba(14,20,40,.09);
  --line-2:rgba(14,20,40,.16);
  --text:#101426;
  --muted:#5b6478;
  --faint:#818ba0;
  --header-bg:rgba(245,247,252,.82);
  --card-glow:rgba(109,94,252,.25);
  --shadow-sm:0 4px 14px -8px rgba(16,20,38,.25);
  --shadow:0 24px 50px -28px rgba(16,20,38,.28);
  --shadow-lg:0 40px 80px -40px rgba(16,20,38,.32);
}

/* ============================================================
   Reset & base
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);
  font-size:15.5px;line-height:1.65;letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;letter-spacing:-.03em;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(109,94,252,.35)}
.wrap{width:min(var(--maxw),100% - 40px);margin-inline:auto}
.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}

::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--bg-soft)}
::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:99px;border:3px solid var(--bg-soft)}
::-webkit-scrollbar-thumb:hover{background:var(--line-2)}

/* ============================================================
   Utilities
   ============================================================ */
.grad-text{
  background:linear-gradient(100deg,var(--brand) 0%,var(--brand-2) 45%,var(--cyan) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:6px 14px 6px 7px;
  border:1px solid var(--line-2);border-radius:999px;background:var(--surface);
  font-size:12.5px;font-weight:600;color:var(--muted);box-shadow:var(--shadow-sm);
}
.eyebrow b{
  display:inline-block;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:700;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;letter-spacing:.02em;
}
.section{padding:96px 0;position:relative}
.section-head{max-width:660px;margin-bottom:44px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head h2{font-size:clamp(28px,3.6vw,42px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.kicker{
  display:block;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-2);margin-bottom:14px;font-family:var(--sans);
}

.btn{
  --btn-bg:var(--surface-2);--btn-fg:var(--text);--btn-bd:var(--line-2);
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:11px 20px;border-radius:12px;font-weight:600;font-size:14.5px;
  background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-bd);
  transition:transform .18s cubic-bezier(.2,.8,.3,1),box-shadow .18s,background .18s,border-color .18s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn svg{width:17px;height:17px;flex:none}
.btn-primary{
  --btn-bg:linear-gradient(120deg,var(--brand),var(--brand-2));--btn-fg:#fff;--btn-bd:transparent;
  box-shadow:0 12px 28px -12px var(--card-glow);
}
.btn-primary:hover{box-shadow:0 18px 38px -14px var(--card-glow)}
.btn-ghost{--btn-bg:transparent;--btn-bd:var(--line-2)}
.btn-ghost:hover{--btn-bg:var(--surface-2)}
.btn-quiet{--btn-bg:transparent;--btn-bd:transparent;color:var(--muted)}
.btn-quiet:hover{color:var(--text);--btn-bg:var(--surface-2)}
.btn-lg{padding:14px 26px;font-size:15.5px;border-radius:14px}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:10px}
.btn-block{width:100%}

.chip{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:8px;
  font-size:11.5px;font-weight:600;background:var(--surface-2);border:1px solid var(--line);color:var(--muted);
}
.tag-new{background:rgba(52,211,153,.14);border-color:rgba(52,211,153,.32);color:var(--green)}
.tag-hot{background:rgba(244,114,182,.14);border-color:rgba(244,114,182,.32);color:var(--pink)}
.tag-sale{background:rgba(251,191,36,.14);border-color:rgba(251,191,36,.32);color:var(--amber)}
.tag-free{background:rgba(34,211,238,.14);border-color:rgba(34,211,238,.32);color:var(--cyan)}
/* Trên nền sáng, chữ màu nhạt trên nền tô nhạt thì gần như không đọc được. Nền sáng
   dùng chính màu đó nhưng đậm hơn, giữ nguyên sắc để nhãn vẫn nhận ra ngay. */
[data-theme="light"] .tag-new{background:rgba(5,150,105,.12);border-color:rgba(5,150,105,.34);color:#047857}
[data-theme="light"] .tag-hot{background:rgba(219,39,119,.10);border-color:rgba(219,39,119,.32);color:#be185d}
[data-theme="light"] .tag-sale{background:rgba(180,83,9,.11);border-color:rgba(180,83,9,.32);color:#b45309}
[data-theme="light"] .tag-free{background:rgba(8,145,178,.11);border-color:rgba(8,145,178,.32);color:#0e7490}

.has-js .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.3,1)}
.has-js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .has-js .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  *{animation:none !important}
}

/* ============================================================
   Topbar + Header
   ============================================================ */
.topbar{
  background:linear-gradient(90deg,rgba(109,94,252,.16),rgba(168,85,247,.16),rgba(34,211,238,.16));
  border-bottom:1px solid var(--line);font-size:13px;color:var(--muted);
}
.topbar .wrap{display:flex;align-items:center;justify-content:center;gap:10px;min-height:38px;text-align:center}
.topbar strong{color:var(--text)}
.topbar a{color:var(--brand-2);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.topbar .close{margin-left:6px;color:var(--faint);font-size:17px;line-height:1}
.topbar .close:hover{color:var(--text)}

.site-header{
  position:sticky;top:0;z-index:80;background:var(--header-bg);
  backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom:1px solid transparent;transition:border-color .25s,box-shadow .25s;
}
.site-header.stuck{border-bottom-color:var(--line);box-shadow:0 10px 30px -22px rgba(0,0,0,.9)}
.nav{display:flex;align-items:center;gap:20px;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:800;font-size:18.5px;letter-spacing:-.02em}
.brand .mark{
  width:34px;height:34px;border-radius:11px;flex:none;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2) 60%,var(--cyan));
  box-shadow:0 8px 22px -10px var(--card-glow);
}
.brand .mark svg{width:19px;height:19px;color:#fff}
.brand sup{font-size:9.5px;color:var(--brand-2);font-weight:700;vertical-align:super;margin-left:3px;letter-spacing:.06em}

.menu{display:flex;align-items:center;gap:2px}
.menu > li > a,.menu > li > button{
  display:flex;align-items:center;gap:6px;padding:9px 13px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s;
}
.menu > li > a:hover,.menu > li > button:hover,.menu > li.open > button{color:var(--text);background:var(--surface-2)}
.menu .caret{width:14px;height:14px;transition:transform .2s}
.menu li.open .caret{transform:rotate(180deg)}

.has-mega{position:relative}
.mega{
  position:absolute;top:calc(100% + 12px);left:-20px;width:min(700px,88vw);padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
  opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s ease;
}
.has-mega.open .mega{opacity:1;visibility:visible;transform:none}
.mega a{display:flex;gap:12px;padding:11px;border-radius:12px;transition:background .16s}
.mega a:hover{background:var(--surface-2)}
.mega .ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-size:17px;flex:none}
.mega b{display:block;font-size:14px;font-weight:600}
.mega small{color:var(--faint);font-size:12.5px}
.mega .foot{grid-column:1/-1;margin-top:6px;padding-top:14px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:var(--muted);padding-inline:11px}

.nav-search{flex:1;max-width:330px;margin-left:auto;position:relative;display:flex;align-items:center}
.nav-search > svg{position:absolute;left:13px;width:16px;height:16px;color:var(--faint);pointer-events:none}
.nav-search input{
  width:100%;padding:10px 62px 10px 38px;border-radius:11px;background:var(--surface-2);
  border:1px solid var(--line);font-size:14px;transition:border-color .18s,background .18s;
}
.nav-search input::placeholder{color:var(--faint)}
.nav-search input:focus{outline:none;border-color:var(--brand);background:var(--surface)}
.nav-search kbd{
  position:absolute;right:9px;padding:2px 7px;border-radius:6px;font-family:var(--sans);font-size:11px;
  font-weight:600;color:var(--faint);background:var(--surface-3);border:1px solid var(--line);
}
.nav-actions{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;color:var(--muted);
  border:1px solid transparent;transition:.18s;position:relative;
}
.icon-btn:hover{background:var(--surface-2);color:var(--text);border-color:var(--line)}
.icon-btn svg{width:18px;height:18px}
.icon-btn .count{
  position:absolute;top:1px;right:1px;min-width:18px;height:18px;padding:0 4px;border-radius:99px;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;font-size:10.5px;font-weight:700;
  display:grid;place-items:center;border:2px solid var(--bg);line-height:1;
}
[data-theme="dark"] .i-sun{display:block}
[data-theme="dark"] .i-moon{display:none}
[data-theme="light"] .i-sun{display:none}
[data-theme="light"] .i-moon{display:block}
.burger{display:none}
@media (max-width:1120px){.nav-search{display:none}}
@media (max-width:940px){
  .menu,.nav-actions .desk{display:none}
  .burger{display:grid}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{position:relative;padding:76px 0 88px;overflow:hidden}
.hero::before,.hero::after{
  content:"";position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;pointer-events:none;z-index:0;
}
.hero::before{width:620px;height:620px;top:-260px;left:-160px;background:radial-gradient(circle,rgba(109,94,252,.55),transparent 68%)}
.hero::after{width:560px;height:560px;top:-140px;right:-180px;background:radial-gradient(circle,rgba(34,211,238,.36),transparent 68%)}
[data-theme="light"] .hero::before{opacity:.34}
[data-theme="light"] .hero::after{opacity:.28}
.hero-grid{
  position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero h1{font-size:clamp(36px,5.1vw,60px);margin:22px 0 20px}
.hero .lead{font-size:17.5px;color:var(--muted);max-width:540px}

.hero-search{
  display:flex;align-items:center;gap:8px;margin-top:30px;padding:7px 7px 7px 16px;
  background:var(--surface);border:1px solid var(--line-2);border-radius:16px;box-shadow:var(--shadow);
  max-width:560px;transition:border-color .2s,box-shadow .2s;
}
.hero-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(109,94,252,.14),var(--shadow)}
.hero-search svg.lens{width:19px;height:19px;color:var(--faint);flex:none}
.hero-search input{flex:1;min-width:0;border:0;background:none;padding:12px 4px;font-size:15px}
.hero-search input:focus{outline:none}
.hero-search select{
  border:0;background:var(--surface-2);border-radius:10px;padding:9px 10px;font-size:13.5px;
  color:var(--muted);cursor:pointer;max-width:150px;
}
.hero-search select:focus{outline:none}
@media (max-width:520px){.hero-search select{display:none}}

.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;align-items:center;font-size:13px;color:var(--faint)}
.hero-tags button{
  padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);
  font-size:13px;color:var(--muted);transition:.16s;
}
.hero-tags button:hover{color:var(--text);border-color:var(--line-2);transform:translateY(-1px)}

.hero-stats{display:flex;gap:34px;flex-wrap:wrap;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.hero-stats div b{display:block;font-family:var(--display);font-size:26px;font-weight:800;letter-spacing:-.03em}
.hero-stats div span{font-size:13px;color:var(--faint)}

/* Hero visual */
.hero-visual{position:relative;perspective:1400px}
.showcase{
  background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r-xl);padding:20px 18px 52px;
  box-shadow:var(--shadow-lg);transform:rotateY(-9deg) rotateX(4deg);transform-style:preserve-3d;
  transition:transform .5s cubic-bezier(.2,.8,.3,1);
}
.hero-visual:hover .showcase{transform:rotateY(-4deg) rotateX(2deg) translateY(-6px)}
.showcase-bar{display:flex;align-items:center;gap:7px;padding:0 4px 14px}
.showcase-bar i{width:11px;height:11px;border-radius:50%;background:var(--surface-3);display:block}
.showcase-bar i:nth-child(1){background:#ff5f57}
.showcase-bar i:nth-child(2){background:#febc2e}
.showcase-bar i:nth-child(3){background:#28c840}
.showcase-bar span{margin-left:8px;font-size:12px;color:var(--faint)}
.showcase-app{display:flex;gap:14px;align-items:center;padding:14px;border-radius:16px;background:var(--surface-2);border:1px solid var(--line)}
.showcase-app .ic{width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:25px;flex:none;box-shadow:var(--shadow-sm)}
.showcase-app b{font-family:var(--display);font-size:16px;display:block}
.showcase-app small{color:var(--faint);font-size:12.5px}
.showcase-app .price{margin-left:auto;text-align:right}
.showcase-app .price b{font-size:15px;color:var(--green)}
.progress{margin-top:14px;padding:14px;border-radius:16px;background:var(--surface-2);border:1px solid var(--line)}
.progress-row{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted);margin-bottom:9px}
.progress-row b{color:var(--text);font-weight:600}
.bar{height:7px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--cyan));width:0;animation:fill 3.4s cubic-bezier(.4,0,.2,1) infinite}
@keyframes fill{0%{width:4%}70%{width:96%}100%{width:100%}}
.mini-list{margin-top:14px;display:grid;gap:8px}
.mini{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:13px;background:var(--surface-2);border:1px solid var(--line)}
.mini .ic{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:16px;flex:none}
.mini b{font-size:13.5px;font-weight:600}
.mini small{display:block;color:var(--faint);font-size:11.5px}
.mini .ok{margin-left:auto;font-size:11.5px;font-weight:600;color:var(--green)}

.float-card{
  position:absolute;background:var(--surface);border:1px solid var(--line-2);border-radius:15px;
  padding:11px 14px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
  animation:bob 6s ease-in-out infinite;z-index:2;
}
.float-card small{display:block;font-size:11px;color:var(--faint);font-weight:500}
.float-card .dot{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;font-size:15px}
.fc-1{top:-36px;left:-30px;animation-delay:-1s}
.fc-2{bottom:-22px;left:-26px;animation-delay:-3s}
.fc-3{bottom:-24px;right:-14px;animation-delay:-2s}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-visual{max-width:520px}
  .fc-1,.fc-2{left:-14px}
}
@media (max-width:640px){
  .float-card{display:none}
  .hero{padding:48px 0 64px}
  .hero-stats{gap:24px}
}

/* Logos strip */
.logos{padding:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-soft)}
.logos .wrap{display:flex;align-items:center;gap:38px;flex-wrap:wrap;justify-content:center}
.logos p{font-size:12.5px;color:var(--faint);letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.logos span{font-family:var(--display);font-weight:700;font-size:18px;color:var(--muted);opacity:.62;transition:.2s}
.logos span:hover{opacity:1;color:var(--text)}

/* ============================================================
   Categories
   ============================================================ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-card{
  position:relative;padding:22px;border-radius:var(--r-lg);background:var(--surface);
  border:1px solid var(--line);overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .22s;
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.cat-card .ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:21px;margin-bottom:16px}
.cat-card h3{font-size:16.5px;margin-bottom:4px}
.cat-card p{font-size:13px;color:var(--faint)}
.cat-card .arrow{position:absolute;top:22px;right:20px;color:var(--faint);opacity:0;transform:translateX(-6px);transition:.22s}
.cat-card:hover .arrow{opacity:1;transform:none;color:var(--brand-2)}
@media (max-width:900px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.cat-grid{grid-template-columns:1fr}}

/* ============================================================
   App catalogue
   ============================================================ */
.catalog-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:26px}
.toolbar{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px;margin-bottom:28px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);position:sticky;top:78px;z-index:40;
  backdrop-filter:blur(12px);
}
.filters{display:flex;gap:6px;flex-wrap:wrap;flex:1;min-width:0}
.filters button{
  padding:8px 15px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--muted);
  border:1px solid transparent;transition:.16s;white-space:nowrap;
}
.filters button:hover{color:var(--text);background:var(--surface-2)}
.filters button.active{
  color:#fff;background:linear-gradient(120deg,var(--brand),var(--brand-2));
  box-shadow:0 10px 22px -14px var(--card-glow);
}
.tool-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.tool-search{position:relative;display:flex;align-items:center;min-width:0}
.tool-search svg{position:absolute;left:11px;width:15px;height:15px;color:var(--faint);pointer-events:none}
.tool-search input{
  width:200px;padding:9px 12px 9px 34px;border-radius:10px;background:var(--surface-2);
  border:1px solid var(--line);font-size:13.5px;
}
.tool-search input:focus{outline:none;border-color:var(--brand)}
.sort-select{
  padding:9px 12px;border-radius:10px;background:var(--surface-2);border:1px solid var(--line);
  font-size:13.5px;color:var(--muted);cursor:pointer;
}
.sort-select:focus{outline:none;border-color:var(--brand)}
@media (max-width:760px){
  .toolbar{position:static}
  .tool-right{width:100%}
  .tool-search{flex:1}
  .tool-search input{width:100%}
}

.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media (max-width:1140px){.app-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:880px){.app-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:540px){.app-grid{grid-template-columns:1fr}}

.app-card{
  position:relative;display:flex;flex-direction:column;padding:20px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);overflow:hidden;
  transition:transform .22s cubic-bezier(.2,.8,.3,1),border-color .22s,box-shadow .22s;
  animation:cardIn .45s cubic-bezier(.2,.8,.3,1) both;
}
@keyframes cardIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.app-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:0;transition:opacity .25s;
  background:radial-gradient(400px circle at 50% 0%,var(--card-glow),transparent 70%);
}
.app-card:hover{transform:translateY(-6px);border-color:var(--line-2);box-shadow:var(--shadow)}
.app-card:hover::after{opacity:.5}
.app-card > *{position:relative;z-index:1}
.app-top{display:flex;align-items:flex-start;gap:13px;margin-bottom:14px}
.app-icon{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;font-size:25px;flex:none;
  box-shadow:var(--shadow-sm);
}
.app-badge{margin-left:auto;flex:none;align-self:flex-start}
.app-card h3{font-size:16.5px;margin-bottom:3px}
.app-card .cat{font-size:12px;color:var(--faint);font-weight:500}
.app-card .desc{font-size:13.5px;color:var(--muted);margin-bottom:14px;min-height:44px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.app-meta{display:flex;align-items:center;flex-wrap:wrap;gap:5px 13px;font-size:12.5px;color:var(--faint);margin-bottom:12px}
.app-meta > span{white-space:nowrap}
.stars{color:var(--amber);letter-spacing:1px;font-size:12px}
.app-meta b{color:var(--text);font-weight:600}
.os-row{display:flex;gap:6px;margin-bottom:16px;flex-wrap:wrap}
.os{
  display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:7px;font-size:11px;font-weight:600;
  background:var(--surface-2);border:1px solid var(--line);color:var(--muted);
}
.os svg{width:11px;height:11px}
.app-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:15px;border-top:1px solid var(--line)}
.price{display:flex;flex-direction:column;line-height:1.25}
.price b{font-family:var(--display);font-size:17px;font-weight:700}
.price s{font-size:12px;color:var(--faint)}
.price .free{color:var(--cyan)}
.catalog-foot{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:40px}
.catalog-foot p{font-size:13.5px;color:var(--faint)}
.empty{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--faint)}
.empty .big{font-size:40px;margin-bottom:10px}

/* ============================================================
   Bundle
   ============================================================ */
.bundle{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:48px;
  background:linear-gradient(125deg,rgba(109,94,252,.22),rgba(168,85,247,.14) 45%,rgba(34,211,238,.16));
  border:1px solid var(--line-2);display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
}
.bundle::before{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;background:radial-gradient(circle,rgba(168,85,247,.3),transparent 70%);filter:blur(50px)}
.bundle > *{position:relative;z-index:1}
.bundle h2{font-size:clamp(26px,3.2vw,36px);margin-bottom:14px}
.bundle p{color:var(--muted);margin-bottom:24px;max-width:460px}
.bundle-price{display:flex;align-items:baseline;gap:12px;margin-bottom:24px}
.bundle-price b{font-family:var(--display);font-size:38px;font-weight:800;letter-spacing:-.03em}
.bundle-price s{color:var(--faint);font-size:18px}
.bundle-apps{display:grid;gap:10px}
.bundle-app{
  display:flex;align-items:center;gap:13px;padding:14px;border-radius:15px;
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .2s;
}
.bundle-app:hover{transform:translateX(5px)}
.bundle-app .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;flex:none}
.bundle-app b{font-size:14.5px;display:block}
.bundle-app small{color:var(--faint);font-size:12px}
.bundle-app .p{margin-left:auto;font-size:13.5px;color:var(--muted);text-decoration:line-through}
@media (max-width:900px){.bundle{grid-template-columns:1fr;padding:32px}}

/* ============================================================
   Features
   ============================================================ */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{padding:26px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);transition:.22s}
.feat:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:var(--shadow)}
.feat .ic{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px}
.feat .ic svg{width:22px;height:22px}
.feat h3{font-size:17px;margin-bottom:8px}
.feat p{font-size:13.8px;color:var(--muted)}
@media (max-width:1000px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.feat-grid{grid-template-columns:1fr}}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:56px;counter-reset:s}
.step{position:relative;padding:26px 24px;border-radius:var(--r-lg);background:var(--bg-soft);border:1px dashed var(--line-2)}
.step::before{
  counter-increment:s;content:"0" counter(s);font-family:var(--display);font-size:34px;font-weight:800;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;margin-bottom:10px;
}
.step h4{font-size:16px;margin-bottom:7px}
.step p{font-size:13.5px;color:var(--muted)}
@media (max-width:820px){.steps{grid-template-columns:1fr}}

/* ============================================================
   Pricing
   ============================================================ */
.billing-toggle{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:40px;font-size:14px;color:var(--muted)}
.switch{
  width:52px;height:29px;border-radius:99px;background:var(--surface-3);border:1px solid var(--line);
  position:relative;transition:background .22s;flex:none;
}
.switch i{
  position:absolute;top:3px;left:3px;width:21px;height:21px;border-radius:50%;background:var(--text);
  transition:transform .24s cubic-bezier(.2,.8,.3,1);
}
.switch.on{background:linear-gradient(120deg,var(--brand),var(--brand-2));border-color:transparent}
.switch.on i{transform:translateX(23px);background:#fff}
.billing-toggle .save{padding:3px 9px;border-radius:99px;font-size:11.5px;font-weight:700;background:rgba(52,211,153,.16);color:var(--green)}
.billing-toggle b.active{color:var(--text)}

.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.plan{padding:30px;border-radius:var(--r-xl);background:var(--surface);border:1px solid var(--line);position:relative;transition:.22s}
.plan:hover{border-color:var(--line-2);box-shadow:var(--shadow)}
.plan.featured{
  border-color:transparent;background:
    linear-gradient(var(--surface),var(--surface)) padding-box,
    linear-gradient(140deg,var(--brand),var(--brand-2),var(--cyan)) border-box;
  border:1.5px solid transparent;box-shadow:0 30px 70px -40px var(--card-glow);transform:translateY(-8px);
}
.plan .flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);padding:5px 14px;border-radius:99px;
  font-size:11.5px;font-weight:700;background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;white-space:nowrap;
}
.plan h3{font-size:19px;margin-bottom:6px}
.plan .who{font-size:13.5px;color:var(--faint);margin-bottom:22px}
.plan .amount{display:flex;align-items:baseline;gap:7px;margin-bottom:6px}
.plan .amount b{font-family:var(--display);font-size:38px;font-weight:800;letter-spacing:-.03em}
.plan .amount span{color:var(--faint);font-size:14px}
.plan .note{font-size:12.5px;color:var(--faint);margin-bottom:24px}
.plan ul{display:grid;gap:11px;margin:24px 0 26px;padding-top:24px;border-top:1px solid var(--line)}
.plan li{display:flex;gap:10px;font-size:13.8px;color:var(--muted);align-items:flex-start}
.plan li svg{width:17px;height:17px;color:var(--green);flex:none;margin-top:2px}
.plan li.off{opacity:.45}
.plan li.off svg{color:var(--faint)}
@media (max-width:920px){.plans{grid-template-columns:1fr;max-width:440px;margin-inline:auto}.plan.featured{transform:none}}

/* ============================================================
   Testimonials
   ============================================================ */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quote{padding:26px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);display:flex;flex-direction:column;gap:16px}
.quote .stars{font-size:14px}
.quote p{font-size:14.5px;color:var(--muted);flex:1}
.quote .who{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:700;font-size:14px;
  color:#fff;font-family:var(--display);flex:none;
}
.quote .who b{display:block;font-size:14px}
.quote .who small{color:var(--faint);font-size:12.5px}
@media (max-width:960px){.quotes{grid-template-columns:1fr}}

/* ============================================================
   FAQ
   ============================================================ */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq{display:grid;gap:10px}
.faq-item{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);overflow:hidden;transition:border-color .2s}
.faq-item.open{border-color:var(--line-2)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:17px 20px;text-align:left;font-size:15px;font-weight:600}
.faq-q .pm{margin-left:auto;width:22px;height:22px;flex:none;color:var(--faint);transition:transform .25s}
.faq-item.open .pm{transform:rotate(45deg);color:var(--brand-2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 18px 54px;font-size:14px;color:var(--muted)}
@media (max-width:900px){.faq-wrap{grid-template-columns:1fr;gap:32px}.faq-a p{padding-left:20px}}

/* ============================================================
   CTA + Footer
   ============================================================ */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-xl);padding:56px 48px;text-align:center;
  background:linear-gradient(135deg,#171a2e,#221a3d 55%,#10202e);border:1px solid var(--line-2);
}
[data-theme="light"] .cta{background:linear-gradient(135deg,#eef0ff,#f6edff 55%,#e9f7fb)}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px circle at 50% 0%,var(--card-glow),transparent 65%);pointer-events:none}
.cta > *{position:relative}
.cta h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:14px}
.cta p{color:var(--muted);max-width:520px;margin:0 auto 28px}
.cta-form{display:flex;gap:10px;max-width:460px;margin:0 auto;flex-wrap:wrap}
.cta-form input{
  flex:1;min-width:220px;padding:13px 16px;border-radius:13px;background:var(--surface);
  border:1px solid var(--line-2);font-size:14.5px;
}
.cta-form input:focus{outline:none;border-color:var(--brand)}
.cta small{display:block;margin-top:14px;color:var(--faint);font-size:12.5px}

.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:64px 0 28px;margin-top:96px}
.foot-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line)}
.foot-brand p{font-size:13.8px;color:var(--muted);margin:16px 0 20px;max-width:280px}
.socials{display:flex;gap:8px}
.socials a{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--line);color:var(--muted);transition:.18s}
.socials a:hover{color:var(--text);border-color:var(--line-2);transform:translateY(-2px)}
.socials svg{width:16px;height:16px}
.foot-col h4{font-size:13px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px;font-family:var(--sans);font-weight:700;color:var(--faint)}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:var(--muted);transition:color .16s}
.foot-col a:hover{color:var(--text)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:var(--faint)}
.foot-bottom .pays{display:flex;gap:8px;flex-wrap:wrap}
.foot-bottom .pays span{padding:4px 10px;border-radius:8px;background:var(--surface-2);border:1px solid var(--line);font-size:11.5px;font-weight:600}
@media (max-width:960px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.foot-grid{grid-template-columns:1fr}}

/* ============================================================
   Overlays: modal, drawer, mobile menu, toast
   ============================================================ */
.scrim{
  position:fixed;inset:0;background:rgba(4,6,12,.66);backdrop-filter:blur(5px);z-index:90;
  opacity:0;visibility:hidden;transition:.25s;
}
.scrim.show{opacity:1;visibility:visible}

.modal{
  position:fixed;z-index:100;left:50%;top:50%;transform:translate(-50%,-46%) scale(.97);
  width:min(880px,calc(100% - 32px));max-height:88vh;overflow:auto;
  background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r-xl);box-shadow:var(--shadow-lg);
  opacity:0;visibility:hidden;transition:.28s cubic-bezier(.2,.8,.3,1);
}
.modal.show{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}
.modal-hero{position:relative;padding:28px 28px 24px;border-bottom:1px solid var(--line);overflow:hidden}
.modal-hero::before{content:"";position:absolute;inset:0;opacity:.16;background:var(--m-grad,linear-gradient(120deg,var(--brand),var(--brand-2)))}
.modal-hero > *{position:relative}
.modal-close{position:absolute;top:18px;right:18px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--surface-2);border:1px solid var(--line);color:var(--muted);z-index:3}
.modal-close:hover{color:var(--text)}
.modal-head{display:flex;gap:18px;align-items:center}
.modal-head .app-icon{width:68px;height:68px;border-radius:19px;font-size:32px}
.modal-head h3{font-size:24px;margin-bottom:5px}
.modal-body{padding:26px 28px 28px;display:grid;grid-template-columns:1.5fr 1fr;gap:28px}
.modal-body h4{font-size:14px;text-transform:uppercase;letter-spacing:.08em;font-family:var(--sans);color:var(--faint);margin-bottom:12px}
.modal-body p{font-size:14.5px;color:var(--muted);margin-bottom:22px}
.shots{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}
.shot{aspect-ratio:16/10;border-radius:12px;border:1px solid var(--line);position:relative;overflow:hidden}
.shot::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(255,255,255,.14),transparent 60%)}
.shot-img{display:block;background:var(--surface-2)}
.shot-img::after{content:none}
.shot-img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .2s}
.shot-img:hover img{transform:scale(1.03)}
@media (max-width:560px){.shots{grid-template-columns:repeat(2,1fr)}}
.feature-list{display:grid;gap:9px;margin-bottom:8px}
.feature-list li{display:flex;gap:9px;font-size:14px;color:var(--muted)}
.feature-list svg{width:16px;height:16px;color:var(--green);flex:none;margin-top:3px}
.buy-box{padding:20px;border-radius:var(--r-lg);background:var(--surface-2);border:1px solid var(--line);position:sticky;top:0}
.buy-box .amount{font-family:var(--display);font-size:30px;font-weight:800;letter-spacing:-.03em;display:block;margin-bottom:4px}
.buy-box .lic{font-size:12.5px;color:var(--faint);margin-bottom:18px}
.spec{display:grid;gap:9px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}
.spec div{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--faint)}
.spec b{color:var(--text);font-weight:600;text-align:right}
@media (max-width:760px){.modal-body{grid-template-columns:1fr}.buy-box{position:static}}

.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(400px,100%);z-index:100;display:flex;flex-direction:column;
  background:var(--surface);border-left:1px solid var(--line-2);box-shadow:var(--shadow-lg);
  transform:translateX(102%);transition:transform .32s cubic-bezier(.2,.8,.3,1);
}
.drawer.show{transform:none}
.drawer header{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line)}
.drawer header h3{font-size:17px}
.drawer header button{margin-left:auto;color:var(--faint)}
.drawer .items{flex:1;overflow:auto;padding:16px;display:grid;gap:10px;align-content:start}
.cart-item{display:flex;gap:12px;align-items:center;padding:12px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line)}
.cart-item .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:19px;flex:none}
.cart-item b{font-size:14px;display:block}
.cart-item small{color:var(--faint);font-size:12px}
.cart-item .rm{margin-left:auto;color:var(--faint);font-size:18px;line-height:1}
.cart-item .rm:hover{color:var(--pink)}
.drawer footer{padding:20px;border-top:1px solid var(--line);display:grid;gap:14px}
.drawer .total{display:flex;justify-content:space-between;align-items:baseline;font-size:14px;color:var(--muted)}
.drawer .total b{font-family:var(--display);font-size:22px;font-weight:800;color:var(--text)}
.cart-empty{text-align:center;color:var(--faint);padding:50px 20px;font-size:14px}
.cart-empty .big{font-size:38px;margin-bottom:10px}

.mobile-menu{
  position:fixed;top:0;left:0;height:100%;width:min(330px,86%);z-index:100;padding:22px;overflow:auto;
  background:var(--surface);border-right:1px solid var(--line-2);transform:translateX(-102%);
  transition:transform .32s cubic-bezier(.2,.8,.3,1);
}
.mobile-menu.show{transform:none}
.mobile-menu .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.mobile-menu nav{display:grid;gap:4px;margin-bottom:22px}
.mobile-menu nav a{padding:11px 12px;border-radius:11px;font-weight:500;color:var(--muted)}
.mobile-menu nav a:hover{background:var(--surface-2);color:var(--text)}
.mobile-menu .acts{display:grid;gap:10px}

.toast-stack{position:fixed;right:20px;bottom:78px;z-index:120;display:grid;gap:10px;justify-items:end}
.toast{
  display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:14px;max-width:340px;
  background:var(--surface);border:1px solid var(--line-2);box-shadow:var(--shadow-lg);font-size:13.8px;
  animation:toastIn .3s cubic-bezier(.2,.8,.3,1);
}
@keyframes toastIn{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.toast.out{opacity:0;transform:translateY(10px);transition:.25s}
.toast .ic{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;flex:none;background:rgba(52,211,153,.16);color:var(--green)}
.toast .ic svg{width:17px;height:17px}
.toast b{display:block;font-size:13.8px}
.toast small{color:var(--faint);font-size:12px}
@media (max-width:520px){.toast-stack{left:16px;right:16px;bottom:16px}.toast{max-width:none;width:100%}}

.to-top{
  position:fixed;right:20px;bottom:20px;width:44px;height:44px;border-radius:14px;z-index:70;
  display:grid;place-items:center;background:var(--surface);border:1px solid var(--line-2);color:var(--muted);
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(10px);transition:.25s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:var(--text);transform:translateY(-3px)}
@media (max-width:520px){.to-top{display:none}}

/* ============================================================
   Trang con: tiêu đề trang & breadcrumb
   ============================================================ */
.menu > li > a.active{color:var(--text);background:var(--surface-2)}

.page-hero{position:relative;padding:52px 0 42px;border-bottom:1px solid var(--line);background:var(--bg-soft);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;width:560px;height:560px;top:-330px;right:-140px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,94,252,.4),transparent 68%);filter:blur(80px);pointer-events:none;
}
[data-theme="light"] .page-hero::before{opacity:.4}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-size:clamp(30px,4.2vw,44px);margin-bottom:12px}
.page-hero .lead{color:var(--muted);max-width:620px;font-size:16.5px}
.page-hero .hero-actions{margin-top:24px;display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.crumbs{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--faint);margin-bottom:16px;flex-wrap:wrap}
.crumbs a:hover{color:var(--text)}
.crumbs svg{width:13px;height:13px;opacity:.6}
.crumbs b{color:var(--muted);font-weight:600}

.stat-row{display:flex;gap:28px;flex-wrap:wrap;margin-top:26px}
.stat-row div b{display:block;font-family:var(--display);font-size:22px;font-weight:800;letter-spacing:-.03em}
.stat-row div span{font-size:12.5px;color:var(--faint)}

/* ============================================================
   Trang danh sách phần mềm
   ============================================================ */
.shop{display:grid;grid-template-columns:264px 1fr;gap:28px;align-items:start;padding:36px 0 90px}
.sidebar{position:sticky;top:88px;display:grid;gap:14px}
@media (max-width:960px){
  .shop{grid-template-columns:1fr;gap:20px}
  .sidebar{position:static;display:none}
  .sidebar.open{display:grid}
}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.side-head h3{font-size:12.5px;text-transform:uppercase;letter-spacing:.1em;font-family:var(--sans);font-weight:700;color:var(--faint)}
.side-head button{font-size:12.5px;color:var(--brand-2);font-weight:600}
.side-head button:hover{text-decoration:underline}
.opts{display:grid;gap:2px}
.opt{display:flex;align-items:center;gap:10px;padding:7px 9px;border-radius:10px;cursor:pointer;font-size:14px;color:var(--muted);transition:.15s}
.opt:hover{background:var(--surface-2);color:var(--text)}
.opt input{
  appearance:none;-webkit-appearance:none;width:17px;height:17px;flex:none;cursor:pointer;
  border:1.5px solid var(--line-2);border-radius:5px;display:grid;place-items:center;transition:.15s;
}
.opt input[type=radio]{border-radius:50%}
.opt input:checked{background:linear-gradient(120deg,var(--brand),var(--brand-2));border-color:transparent}
.opt input:checked::after{content:"";width:7px;height:7px;border-radius:2px;background:#fff}
.opt input[type=radio]:checked::after{border-radius:50%}
.opt input:checked + span{color:var(--text);font-weight:600}
.opt .num{margin-left:auto;font-size:11.5px;color:var(--faint);background:var(--surface-2);border:1px solid var(--line);padding:1px 8px;border-radius:999px}
.side-note{display:flex;gap:11px;padding:16px;border-radius:var(--r-lg);background:linear-gradient(135deg,rgba(109,94,252,.14),rgba(34,211,238,.1));border:1px solid var(--line-2)}
.side-note b{display:block;font-size:14px;margin-bottom:4px}
.side-note p{font-size:12.8px;color:var(--muted);margin-bottom:10px}

.filter-toggle{display:none}
@media (max-width:960px){.filter-toggle{display:inline-flex}}

.result-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.result-bar .n{font-size:14px;color:var(--muted)}
.result-bar .n b{color:var(--text);font-weight:700}
.result-bar .right{margin-left:auto;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.view-toggle{display:flex;gap:2px;padding:3px;background:var(--surface-2);border:1px solid var(--line);border-radius:11px}
.view-toggle button{width:34px;height:30px;border-radius:8px;display:grid;place-items:center;color:var(--faint);transition:.16s}
.view-toggle button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}
.view-toggle svg{width:16px;height:16px}

.active-filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.fchip{display:inline-flex;align-items:center;gap:8px;padding:5px 11px;border-radius:999px;background:var(--surface-2);border:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.fchip button{color:var(--faint);font-size:15px;line-height:1}
.fchip button:hover{color:var(--pink)}

.app-grid.list{grid-template-columns:1fr;gap:12px}
.app-row{
  display:flex;align-items:center;gap:16px;padding:15px 18px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);cursor:pointer;
  transition:transform .2s cubic-bezier(.2,.8,.3,1),border-color .2s,box-shadow .2s;
  animation:cardIn .4s cubic-bezier(.2,.8,.3,1) both;
}
.app-row:hover{transform:translateX(4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.app-row .app-icon{width:48px;height:48px;border-radius:14px;font-size:23px}
.app-row .info{flex:1;min-width:0}
.app-row h3{font-size:16px;display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:3px}
.app-row .tagline{font-size:13.4px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.app-row .meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.4px;color:var(--faint);margin-top:7px}
.app-row .meta b{color:var(--text);font-weight:600}
.app-row .buy{display:flex;align-items:center;gap:16px;margin-left:auto;flex:none}
@media (max-width:760px){
  .app-row{flex-wrap:wrap}
  .app-row .tagline{white-space:normal}
  .app-row .buy{width:100%;margin-left:0;justify-content:space-between;padding-top:13px;border-top:1px solid var(--line)}
}

.pager{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:36px;flex-wrap:wrap}
.pager button{
  min-width:38px;height:38px;padding:0 13px;border-radius:11px;border:1px solid var(--line);
  background:var(--surface);color:var(--muted);font-size:14px;font-weight:600;transition:.16s;
}
.pager button:hover:not(:disabled):not(.active){color:var(--text);border-color:var(--line-2);transform:translateY(-2px)}
.pager button.active{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}
.pager button:disabled{opacity:.35;cursor:not-allowed}
.pager .dots{color:var(--faint);padding:0 2px}

/* ============================================================
   Trang liên hệ
   ============================================================ */
.contact-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:start;padding:48px 0 40px}
@media (max-width:920px){.contact-layout{grid-template-columns:1fr}}
.info-stack{display:grid;gap:12px}
.info-card{display:flex;gap:14px;padding:18px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);transition:.2s}
.info-card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.info-card .ic{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;flex:none}
.info-card .ic svg{width:19px;height:19px}
.info-card b{display:block;font-size:14.5px;margin-bottom:4px}
.info-card p{font-size:13.4px;color:var(--muted)}
.info-card p a{color:var(--brand-2);font-weight:600}
.info-card p a:hover{text-decoration:underline}
.map{position:relative;height:180px;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface-2);overflow:hidden}
.map::before{
  content:"";position:absolute;inset:0;opacity:.75;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:30px 30px;
}
.map .road{position:absolute;left:-10%;top:58%;width:120%;height:16px;background:var(--surface-3);transform:rotate(-8deg)}
.map .pin{
  position:absolute;left:50%;top:48%;transform:translate(-50%,-100%);width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 10px 24px -8px var(--card-glow);z-index:2;
}
.map .pin::after{content:"";position:absolute;top:50%;left:50%;width:34px;height:34px;border-radius:50%;border:2px solid var(--brand);transform:translate(-50%,-50%);animation:ping 2.4s ease-out infinite}
@keyframes ping{0%{opacity:.7;transform:translate(-50%,-50%) scale(1)}100%{opacity:0;transform:translate(-50%,-50%) scale(2.6)}}
.map .label{position:absolute;left:14px;bottom:12px;padding:7px 12px;border-radius:10px;background:var(--surface);border:1px solid var(--line-2);font-size:12.5px;font-weight:600;z-index:2}

.form-card{padding:30px;border-radius:var(--r-xl);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.form-card > h2{font-size:23px;margin-bottom:8px}
.form-card > .sub{font-size:14px;color:var(--muted);margin-bottom:26px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
@media (max-width:560px){.form-grid{grid-template-columns:1fr}.form-card{padding:22px}}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--muted)}
.field label .req{color:var(--pink)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;background:var(--surface-2);
  border:1px solid var(--line);font-size:14.5px;font-family:inherit;transition:.16s;
}
.field textarea{min-height:140px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:var(--surface);box-shadow:0 0 0 4px rgba(109,94,252,.13);
}
.field .hint{font-size:12px;color:var(--faint)}
.field .err{font-size:12.5px;color:#fb7185;display:none;align-items:center;gap:6px}
.field .err svg{width:14px;height:14px;flex:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#fb7185;background:rgba(251,113,133,.06)}
.field.invalid .err{display:flex}
.counter{font-size:12px;color:var(--faint);text-align:right}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:13.4px;color:var(--muted);grid-column:1/-1;cursor:pointer}
.consent input{
  appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:none;margin-top:2px;cursor:pointer;
  border:1.5px solid var(--line-2);border-radius:5px;display:grid;place-items:center;transition:.15s;
}
.consent input:checked{background:linear-gradient(120deg,var(--brand),var(--brand-2));border-color:transparent}
.consent input:checked::after{content:"";width:7px;height:7px;border-radius:2px;background:#fff}
.form-foot{display:flex;align-items:center;gap:16px;margin-top:24px;flex-wrap:wrap}
.form-foot small{color:var(--faint);font-size:12.5px;flex:1;min-width:180px}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.btn.loading{opacity:.8;pointer-events:none}

.success{text-align:center;padding:46px 26px}
.success .tick{width:66px;height:66px;border-radius:50%;display:grid;place-items:center;margin:0 auto 20px;background:rgba(52,211,153,.15);color:var(--green)}
.success .tick svg{width:30px;height:30px}
.success h3{font-size:23px;margin-bottom:10px}
.success p{color:var(--muted);max-width:420px;margin:0 auto}
.ticket{display:inline-flex;align-items:center;gap:9px;margin:18px 0 24px;padding:9px 15px;border-radius:11px;background:var(--surface-2);border:1px dashed var(--line-2);font-size:13.5px;color:var(--muted)}
.ticket b{font-family:var(--display);color:var(--text);letter-spacing:.02em}

.support-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-bottom:90px}
@media (max-width:820px){.support-strip{grid-template-columns:1fr}}

/* Lưới trong trang danh sách hẹp hơn vì có cột lọc bên trái */
.shop .app-grid{grid-template-columns:repeat(3,1fr)}
@media (max-width:1240px){.shop .app-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:960px){.shop .app-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:860px){.shop .app-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.shop .app-grid{grid-template-columns:1fr}}

/* ── Bổ sung cho bản Razor ────────────────────────────────────────────────── */
.lang-switch .lang-code{font-size:12px;font-weight:700;letter-spacing:.04em}
.app-card h3 a.stretch{color:inherit;text-decoration:none}
.app-card h3 a.stretch::after{content:"";position:absolute;inset:0;z-index:2}
.app-card{position:relative}
.app-card .app-foot .btn{position:relative;z-index:3}
.hero-tags .btn-sm{padding:5px 12px;border-radius:999px}

/* ── Trang danh sách: điều khiển là thẻ a để trạng thái lọc nằm trong URL ── */
.opt{text-decoration:none}
.opt .box{
  width:17px;height:17px;flex:none;border:1.5px solid var(--line-2);border-radius:5px;
  display:grid;place-items:center;transition:.15s;
}
.opt .box.round{border-radius:50%}
.opt .box.checked{background:linear-gradient(120deg,var(--brand),var(--brand-2));border-color:transparent}
.opt .box.checked::after{content:"";width:7px;height:7px;border-radius:2px;background:#fff}
.opt .box.round.checked::after{border-radius:50%}
.opt.on{color:var(--text);font-weight:600}
.side-head a{font-size:12.5px;color:var(--brand-2);font-weight:600;text-decoration:none}
.side-head a:hover{text-decoration:underline}

.view-toggle a{
  width:34px;height:30px;border-radius:8px;display:grid;place-items:center;color:var(--faint);transition:.16s;
}
.view-toggle a.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}

.fchip a{color:var(--faint);font-size:15px;line-height:1;text-decoration:none}
.fchip a:hover{color:var(--pink)}
a.fchip{cursor:pointer;text-decoration:none}
a.fchip:hover{color:var(--text);border-color:var(--line-2)}

.pager a,.pager span.disabled{
  min-width:38px;height:38px;padding:0 13px;border-radius:11px;border:1px solid var(--line);
  background:var(--surface);color:var(--muted);font-size:14px;font-weight:600;transition:.16s;
  display:inline-flex;align-items:center;justify-content:center;text-decoration:none;
}
.pager a:hover:not(.active){color:var(--text);border-color:var(--line-2);transform:translateY(-2px)}
.pager a.active{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}
.pager span.disabled{opacity:.35}

.app-row h3 a.stretch{color:inherit;text-decoration:none}
.app-row{position:relative}
.app-row h3 a.stretch::after{content:"";position:absolute;inset:0;z-index:2}
.app-row .buy .btn{position:relative;z-index:3}
.hero-actions .tool-search input{border:0;background:none;padding:9px 4px 9px 34px}
.hero-actions .tool-search{
  padding:0;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;
}

/* ── Trang chi tiết phần mềm ─────────────────────────────────────────────── */
.detail-head{display:flex;gap:22px;align-items:flex-start;margin-top:8px}
.detail-head h1{font-size:clamp(28px,3.6vw,40px);margin-bottom:10px}
.app-icon.big{width:76px;height:76px;border-radius:22px;font-size:36px;flex:none}
.detail{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:36px;align-items:start;padding:40px 0 90px}
@media (max-width:960px){.detail{grid-template-columns:1fr}}
.detail main h2{font-size:20px;margin:34px 0 14px}
.detail main h2:first-of-type{margin-top:26px}
.detail .body{font-size:15.5px;color:var(--muted);max-width:70ch}
.detail .hint{font-size:13px;color:var(--faint);margin-top:10px}
.detail .tw{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.detail table{border-collapse:collapse;width:100%;font-size:14px;min-width:520px}
.detail th,.detail td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line)}
.detail thead th{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--faint);background:var(--surface-2);white-space:nowrap}
.detail tbody tr:last-child td{border-bottom:0}
.detail td.mono{font-family:ui-monospace,Consolas,monospace;font-size:13px}
.buy-box .amount{font-family:var(--display);font-size:32px;font-weight:800;letter-spacing:-.03em;display:block}
.buy-box .was{color:var(--faint);font-size:15px;margin-left:8px}
.buy-box .lic{font-size:12.5px;color:var(--faint);margin:6px 0 18px}
.sku-list{display:grid;gap:8px;margin-bottom:16px}
.sku{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--line);border-radius:12px;cursor:pointer;font-size:13.5px;transition:.16s}
.sku:hover{border-color:var(--line-2)}
.sku.on{border-color:var(--brand);background:var(--surface-2)}
.sku input{accent-color:var(--brand)}
.sku .sku-price{margin-left:auto;font-weight:700}
.related{margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.related h3{font-size:13px;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);margin-bottom:14px}
.related-item{display:flex;gap:12px;align-items:center;padding:9px;border-radius:12px;transition:.16s}
.related-item:hover{background:var(--surface-2)}
.related-item .ic{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:18px;flex:none}
.related-item b{display:block;font-size:14px}
.related-item small{color:var(--faint);font-size:12.5px}

/* ── Giỏ hàng, thanh toán, màn hình chờ ──────────────────────────────────── */
.cart-layout,.pay-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:32px;align-items:start;padding:40px 0 90px}
@media (max-width:900px){.cart-layout,.pay-layout{grid-template-columns:1fr}}
.cart-line{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);margin-bottom:10px}
.cart-line .ic{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:21px;flex:none}
.cart-line .info{flex:1;min-width:0}
.cart-line .info b{font-size:15px;display:block}
.cart-line .info small{color:var(--faint);font-size:12.5px}
.cart-line .line-total{font-family:var(--display);font-weight:700;font-size:15px;white-space:nowrap}
.cart-line .rm{color:var(--faint);font-size:20px;line-height:1;padding:4px 8px}
.cart-line .rm:hover{color:var(--pink)}
.qty{display:flex;align-items:center;gap:2px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.qty button{width:30px;height:30px;color:var(--muted);font-size:15px}
.qty button:hover{background:var(--surface-2);color:var(--text)}
.qty span{min-width:26px;text-align:center;font-size:13.5px;font-variant-numeric:tabular-nums}
.coupon-form{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;align-items:center}
.coupon-form input{padding:11px 14px;border-radius:11px;background:var(--surface-2);border:1px solid var(--line);font-size:14px;min-width:200px}
.coupon-form input:focus{outline:none;border-color:var(--brand)}
.err-inline{color:#fb7185;font-size:13px}
.sum-row{display:flex;justify-content:space-between;gap:14px;font-size:14px;color:var(--muted);padding:7px 0}
.sum-row b{color:var(--text);font-weight:600}
.sum-row.discount b{color:var(--green)}
.sum-row.total{border-top:1px solid var(--line);margin-top:8px;padding-top:14px;font-size:15px}
.sum-row.total b{font-family:var(--display);font-size:22px;font-weight:800}
.buy-box h3{font-size:13px;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);margin-bottom:14px}
.btn.disabled{opacity:.45;pointer-events:none}
.alert{padding:14px 16px;border-radius:12px;background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.35);color:var(--amber);font-size:14px;margin-bottom:20px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.rail-list{display:grid;gap:10px;margin-bottom:8px}
.rail{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;cursor:pointer;transition:.16s}
.rail:hover{border-color:var(--line-2)}
.rail.on{border-color:var(--brand);background:var(--surface-2)}
.rail .ic{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:19px;background:var(--surface-2);flex:none}
.rail b{display:block;font-size:14.5px}
.rail small{color:var(--faint);font-size:12.5px}
.rail .rail-amount{margin-left:auto;font-weight:700;white-space:nowrap}
.rail input{accent-color:var(--brand)}
.qr-card{display:flex;gap:26px;padding:24px;border:1px solid var(--line);border-radius:var(--r-xl);background:var(--surface);flex-wrap:wrap;align-items:flex-start}
.qr-card img{border-radius:14px;background:#fff;padding:8px}
.qr-info{min-width:240px}
.pay-amount{font-family:var(--display);font-size:32px;font-weight:800;letter-spacing:-.03em;margin-bottom:14px}
.qr-info dl{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:13.5px;margin:0}
.qr-info dt{color:var(--faint)}
.qr-info dd{margin:0;font-weight:600}
.qr-info .warn{margin-top:16px;font-size:13px;color:var(--amber)}
code.copy{cursor:pointer;user-select:all}
code.copy:hover{border-color:var(--brand)}
.pay-wait{display:flex;align-items:center;gap:12px;margin-top:22px;padding:14px 18px;border:1px dashed var(--line-2);border-radius:14px;font-size:14px;color:var(--muted)}
.pay-wait .countdown{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--text)}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid var(--line-2);border-top-color:var(--brand);animation:spin .7s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.pay-done{grid-column:1/-1;text-align:center;max-width:640px;margin-inline:auto;padding:20px 0}
.pay-done .tick{width:66px;height:66px;border-radius:50%;display:grid;place-items:center;margin:0 auto 20px;background:rgba(52,211,153,.15);color:var(--green)}
.pay-done .tick svg{width:30px;height:30px}
.pay-done h2{font-size:24px;margin-bottom:10px}
.pay-done > p{color:var(--muted);margin-bottom:24px}
.lic-list{display:grid;gap:10px;text-align:left}
.lic-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.lic-item .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;flex:none}
.lic-item b{display:block;font-size:14.5px}
.lic-item code{display:inline-block;margin:4px 0}
.lic-item small{display:block;color:var(--faint);font-size:12px}
.lic-item .dl-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.lic-item .dl-row .btn{gap:7px}
.lic-item .dl-row .btn svg{width:15px;height:15px}
.lic-item .dl-row .btn small{display:inline;color:inherit;opacity:.75;font-weight:500;font-size:11.5px}
.next-steps{counter-reset:n;display:grid;gap:10px;margin-bottom:16px}
.next-steps li{counter-increment:n;list-style:none;display:flex;gap:10px;font-size:13.8px;color:var(--muted)}
.next-steps li::before{content:counter(n);width:20px;height:20px;border-radius:50%;background:var(--surface-2);border:1px solid var(--line);display:grid;place-items:center;font-size:11px;font-weight:700;color:var(--brand);flex:none}
.form-card h2{font-size:17px;margin:26px 0 14px}
.form-card h2:first-of-type{margin-top:0}

/* ── Logo ─────────────────────────────────────────────────────────────────── */
.brand-logo{height:30px;width:auto;display:block}
.brand{gap:0}
[data-theme="dark"] .brand-logo.on-light{display:none}
[data-theme="light"] .brand-logo.on-dark{display:none}
.mobile-menu .brand-logo{height:26px}
.site-footer .brand-logo{height:28px}

/* ── Trang tài liệu lập trình ─────────────────────────────────────────────── */
.doc-base{
  font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:13px;
  padding:7px 13px;border:1px solid var(--line-2);border-radius:999px;background:var(--surface);
}
.doc-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:56px;padding:44px 0 88px;align-items:start}

.doc-toc{position:sticky;top:88px;max-height:calc(100vh - 116px);overflow:auto;padding-right:6px}
.doc-toc > b{display:block;font-size:11.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.doc-toc nav{display:grid;gap:1px;border-left:1px solid var(--line)}
.doc-toc a{padding:6px 0 6px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:13.2px;color:var(--muted);line-height:1.4}
.doc-toc a:hover{color:var(--text)}
.doc-toc a.sub{padding-left:26px;font-size:12.6px;color:var(--faint)}
.doc-toc a.on{color:var(--brand);border-left-color:var(--brand);font-weight:600}

.doc-body{min-width:0;font-size:15.5px;line-height:1.75;color:var(--muted)}
.doc-body > :first-child{margin-top:0}
.doc-body h2{font-size:25px;margin:52px 0 18px;color:var(--text);scroll-margin-top:96px}
.doc-body h3{font-size:18px;margin:36px 0 14px;color:var(--text);scroll-margin-top:96px}
.doc-body h4{font-size:15.5px;margin:26px 0 10px;color:var(--text);scroll-margin-top:96px}
.doc-body p{margin:0 0 16px}
.doc-body strong{color:var(--text);font-weight:650}
.doc-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.doc-body hr{border:0;border-top:1px solid var(--line);margin:44px 0}
.doc-body em{color:var(--faint)}

/* Bảng chung của site bỏ dấu đầu dòng; ở đây phải trả lại cho danh sách. */
.doc-body ul,.doc-body ol{margin:0 0 16px;padding-left:22px}
.doc-body ul{list-style:disc}
.doc-body ol{list-style:decimal}
.doc-body li{margin-bottom:7px}
.doc-body li::marker{color:var(--faint)}

.doc-body code{
  font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:.87em;
  padding:2px 6px;border:1px solid var(--line);border-radius:6px;
  background:var(--surface-2);color:var(--text);word-break:break-word;
}
.doc-body pre{
  position:relative;margin:0 0 20px;padding:18px 20px;overflow-x:auto;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  box-shadow:var(--shadow-sm);
}
.doc-body pre code{padding:0;border:0;background:none;font-size:13.2px;line-height:1.65;word-break:normal}
.doc-copy{
  position:absolute;top:10px;right:10px;padding:5px 11px;border-radius:8px;
  border:1px solid var(--line-2);background:var(--surface-2);
  font-size:11.5px;font-weight:600;color:var(--muted);opacity:0;transition:opacity .15s
}
.doc-body pre:hover .doc-copy,.doc-copy:focus-visible{opacity:1}
.doc-copy:hover{color:var(--text);border-color:var(--brand)}

.doc-table{overflow-x:auto;margin:0 0 22px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.doc-body table{border-collapse:collapse;width:100%;min-width:520px;font-size:14px}
.doc-body th,.doc-body td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.doc-body thead th{background:var(--surface-2);color:var(--text);font-weight:650;font-size:12.5px;letter-spacing:.02em;white-space:nowrap}
.doc-body tbody tr:last-child td{border-bottom:0}
.doc-body td code{white-space:nowrap}

.doc-body blockquote{
  margin:0 0 22px;padding:16px 20px;border:1px solid var(--line);border-left:3px solid var(--amber);
  border-radius:var(--r-sm);background:var(--surface);
}
.doc-body blockquote p:last-child{margin-bottom:0}

.doc-note{
  padding:14px 18px;margin-bottom:28px;border:1px dashed var(--line-2);
  border-radius:var(--r-sm);background:var(--surface);font-size:14px;
}

@media (max-width:1000px){
  .doc-layout{grid-template-columns:1fr;gap:28px;padding-top:32px}
  .doc-toc{position:static;max-height:none;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
  .doc-copy{opacity:1}
}

/* ── Chọn ngôn ngữ ────────────────────────────────────────────────────────── */
.lang-menu{position:relative}
.lang-switch{width:auto;padding:0 8px 0 10px;gap:3px;display:inline-flex;align-items:center}
.lang-switch .caret{width:13px;height:13px;opacity:.65}
.lang-menu.open .lang-switch{border-color:var(--line-2);background:var(--surface-2);color:var(--text)}
.lang-list{
  position:absolute;top:calc(100% + 8px);right:0;min-width:186px;padding:6px;z-index:60;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-lg);
  display:grid;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.16s ease;
}
.lang-menu.open .lang-list{opacity:1;visibility:visible;transform:none}
.lang-list a{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:9px;font-size:13.5px;color:var(--muted)}
.lang-list a:hover{background:var(--surface-2);color:var(--text)}
.lang-list a .code{
  font-size:10.5px;font-weight:700;letter-spacing:.05em;min-width:26px;text-align:center;
  padding:2px 5px;border:1px solid var(--line-2);border-radius:6px;color:var(--faint);
}
.lang-list a.on{color:var(--text);font-weight:600}
.lang-list a.on .code{border-color:var(--brand);color:var(--brand)}

/* ── Nút đăng nhập Google ─────────────────────────────────────────────────── */
/* Giữ đúng nhận diện của Google: nền trắng, chữ xám đậm, logo bốn màu. Người dùng
   nhận ra nút này trước khi kịp đọc chữ, nên đừng nhuộm nó theo màu của site. */
.btn-google{
  display:inline-flex;align-items:center;gap:10px;
  background:#fff;color:#3c4043;border:1px solid #dadce0;
  font-weight:600;box-shadow:0 1px 2px rgba(60,64,67,.16);
}
.btn-google:hover{background:#f7f8f8;border-color:#d2d5d9;box-shadow:0 1px 3px rgba(60,64,67,.24)}
.btn-google svg{width:18px;height:18px;flex:none}
[data-theme="dark"] .btn-google{background:#fff;color:#3c4043;border-color:#dadce0}

/* ── Trang đăng nhập ──────────────────────────────────────────────────────── */
.auth-wrap{display:flex;justify-content:center;padding:72px 16px 96px}
.auth-card{
  width:100%;max-width:400px;padding:36px 32px 28px;text-align:center;
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);
  box-shadow:0 12px 40px -18px rgba(20,24,60,.25);
}
.auth-ic{
  width:52px;height:52px;margin:0 auto 18px;border-radius:16px;display:grid;place-items:center;
  color:#fff;background:linear-gradient(135deg,#6d5efc,#a855f7);
}
.auth-ic svg{width:24px;height:24px}
.auth-card h1{font-size:26px;margin-bottom:8px}
.auth-lead{color:var(--muted);font-size:14px;line-height:1.6;margin-bottom:24px}
.auth-card .btn-google{justify-content:center;height:46px;font-size:15px;border-radius:12px}
.auth-note{
  display:flex;align-items:flex-start;justify-content:center;gap:7px;margin-top:18px;
  color:var(--faint);font-size:12.5px;line-height:1.5;text-align:left;
}
.auth-note svg{width:14px;height:14px;flex:none;margin-top:2px}
@media (max-width:480px){.auth-wrap{padding:40px 16px 64px}.auth-card{padding:28px 20px 22px}}

/* ── Khối mời lưu giấy phép sau khi mua ───────────────────────────────────── */
.save-box{
  max-width:460px;margin:28px auto 0;padding:24px;text-align:left;
  border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);
}
.save-box h3{font-size:19px;margin-bottom:8px}
.save-box p{color:var(--muted);font-size:14px;line-height:1.6;margin-bottom:18px}
.save-box p b{color:var(--text)}
.save-box small{display:block;margin-top:12px;color:var(--faint);font-size:12px;text-align:center}

/* ── Link tài khoản trên thanh đầu trang ──────────────────────────────────── */
.acct-link{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 12px;
  border-radius:11px;border:1px solid var(--line);color:var(--muted);
  font-size:13.5px;font-weight:600;transition:.18s;white-space:nowrap;max-width:190px;
}
.acct-link:hover{color:var(--text);border-color:var(--line-2);background:var(--surface-2)}
.acct-link svg{width:19px;height:19px;flex:none}
.acct-link span{overflow:hidden;text-overflow:ellipsis}

/* ── Nút chép khoá ────────────────────────────────────────────────────────── */
.copy-key{
  display:inline-flex;align-items:center;gap:5px;margin-left:8px;padding:3px 9px;
  border:1px solid var(--line-2);border-radius:7px;background:var(--surface-2);
  color:var(--muted);font-size:11.5px;font-weight:600;cursor:pointer;transition:.15s;
  vertical-align:middle;
}
.copy-key:hover{color:var(--text);border-color:var(--brand)}
.copy-key.ok{color:var(--green);border-color:var(--green)}
.copy-key svg{width:13px;height:13px;flex:none}

/* ── Người mua trên trang thanh toán ──────────────────────────────────────── */
.buyer{display:flex;align-items:center;gap:12px;padding:14px 16px;margin-bottom:22px;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface-2)}
.buyer .ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--line);font-size:17px;flex:none}
.buyer b{display:block;font-size:14.5px}
.buyer small{display:block;color:var(--faint);font-size:12.5px;margin-top:1px}

/* Biểu tượng là ảnh logo tải lên thay vì emoji: phủ kín ô, bo theo góc của ô. */
.app-icon > img,.ic > img{width:100%;height:100%;object-fit:cover;border-radius:inherit;display:block}