@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url(fonts/quicksand-400-vietnamese.woff2) format('woff2');
  unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url(fonts/quicksand-400-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:400;
  font-display:swap;
  src:url(fonts/quicksand-400-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:500;
  font-display:swap;
  src:url(fonts/quicksand-500-vietnamese.woff2) format('woff2');
  unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:500;
  font-display:swap;
  src:url(fonts/quicksand-500-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:500;
  font-display:swap;
  src:url(fonts/quicksand-500-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:600;
  font-display:swap;
  src:url(fonts/quicksand-600-vietnamese.woff2) format('woff2');
  unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:600;
  font-display:swap;
  src:url(fonts/quicksand-600-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:600;
  font-display:swap;
  src:url(fonts/quicksand-600-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:700;
  font-display:swap;
  src:url(fonts/quicksand-700-vietnamese.woff2) format('woff2');
  unicode-range:U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:700;
  font-display:swap;
  src:url(fonts/quicksand-700-latin-ext.woff2) format('woff2');
  unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF
}
@font-face{
  font-family:'Quicksand';
  font-style:normal;
  font-weight:700;
  font-display:swap;
  src:url(fonts/quicksand-700-latin.woff2) format('woff2');
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD
}
/* TikDown — font Quicksand (đúng font vn2rap.net đang dùng), sáng/tối theo biến CSS.
   Theme: <html data-theme> do script ở <head> đặt (theo lựa chọn đã lưu
   hoặc theo hệ điều hành); nút gạt ở header đổi + ghi nhớ. */
:root{
  --bg:#0b0b10; --bg2:#101018; --card:#15151f; --card2:#1b1b28;
  --line:#262633; --line2:#323244;
  --fg:#f5f5f8; --muted:#a8a8ba; --muted2:#7d7d90;
  --pink:#fe2c55; --pink2:#ff5e3a; --cyan:#25f4ee; --cyan-d:#0e3a3f;
  --header-bg:rgba(11,11,16,.78);
  --alert-bg:#3a1420; --alert-fg:#ffd7de;
  --radius:16px; --shadow:0 18px 50px rgba(0,0,0,.45);
  --glow-cyan:rgba(37,244,238,.13); --glow-pink:rgba(254,44,85,.14);
}
:root[data-theme="light"]{
  --bg:#f4f4f8; --bg2:#ffffff; --card:#ffffff; --card2:#ececf3;
  --line:#e1e1ec; --line2:#cbcbd9;
  --fg:#17171f; --muted:#55556b; --muted2:#87879c;
  --cyan:#0b7a86; --cyan-d:#d9f6f3;
  --header-bg:rgba(255,255,255,.86);
  --alert-bg:#fdeef1; --alert-fg:#8c1d33;
  --shadow:0 16px 44px rgba(31,31,64,.13);
  --glow-cyan:rgba(37,190,200,.12); --glow-pink:rgba(254,44,85,.10);
}
*{box-sizing:border-box}
button,input,select,textarea{font-family:inherit}
.brand-logo{height:38px;width:auto;max-width:190px;object-fit:contain}
.nf-code{font-size:clamp(84px,18vw,150px);font-weight:700;line-height:1;letter-spacing:-.02em;background:linear-gradient(92deg,var(--pink),var(--pink2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nf-links{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;max-width:760px;margin:32px auto 8px;padding:0 4px}
.chip-link{padding:10px 18px;border:1px solid var(--line2);border-radius:999px;color:var(--fg);font-weight:600;background:var(--card)}
.chip-link:hover{border-color:var(--pink);text-decoration:none}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--fg);line-height:1.65;font-size:16px;
  font-family:"Quicksand","Segoe UI",ui-sans-serif,system-ui,sans-serif;
  background:
    radial-gradient(720px 380px at 12% -60px, var(--glow-cyan), transparent 65%),
    radial-gradient(820px 420px at 88% -80px, var(--glow-pink), transparent 65%),
    var(--bg);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  transition:background-color .25s,color .25s;
}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
img{max-width:100%}
main{max-width:1060px;margin:0 auto;padding:0 20px 64px}
::selection{background:var(--pink);color:#fff}

/* ---------- Thanh thông báo (admin bật) ---------- */
.announce{
  background:linear-gradient(92deg,var(--pink),var(--pink2));color:#fff;
  text-align:center;font-size:14.5px;font-weight:600;padding:9px 16px;line-height:1.45;
}
.announce a{color:#fff;text-decoration:underline}

/* ---------- Quảng cáo (admin dán mã) ---------- */
.ad-slot{max-width:1060px;margin:20px auto 0;padding:0 20px;text-align:center}
.ad-slot img,.ad-slot iframe,.ad-slot ins{max-width:100%}
.ad-slot:empty{display:none}
main .ad-slot{padding:0;margin-top:24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:var(--header-bg);border-bottom:1px solid var(--line);
}
.site-header>*{max-width:1060px;margin:0 auto}
.site-header{display:flex;align-items:center;gap:16px;padding:11px 20px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:9px;color:var(--fg);font-weight:800;font-size:20px;letter-spacing:.2px}
.brand:hover{text-decoration:none}
.brand svg{color:var(--pink);filter:drop-shadow(0 0 10px rgba(254,44,85,.55))}
.site-nav{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
.site-nav a{color:var(--muted);font-size:15px;padding:7px 12px;border-radius:999px;transition:.15s}
.site-nav a.active{background:var(--card2);color:var(--fg)}
.site-nav a:hover{color:var(--fg);text-decoration:none;background:var(--card2)}
.header-actions{display:flex;align-items:center;gap:8px}
.lang-switch{
  display:inline-flex;align-items:center;gap:6px;color:var(--muted);
  border:1px solid var(--line2);border-radius:999px;padding:6px 12px;font-size:13.5px;font-weight:700;transition:.15s;
}
.lang-switch:hover{color:var(--fg);text-decoration:none;border-color:var(--muted)}
.lang-menu{position:relative}
.lang-menu>summary{list-style:none;cursor:pointer}
.lang-menu>summary::-webkit-details-marker{display:none}
.lang-list{position:absolute;right:0;top:calc(100% + 8px);min-width:190px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 16px 40px rgba(0,0,0,.35);z-index:60}
.lang-list a{display:block;padding:9px 12px;border-radius:8px;color:var(--fg);font-size:14px;font-weight:600;white-space:nowrap}
.lang-list a:hover{background:var(--bg);text-decoration:none}
.lang-list a.active{color:var(--pink2)}
#dlResult{scroll-margin-top:84px}
.theme-toggle{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line2);background:var(--card2);
  color:var(--fg);cursor:pointer;display:grid;place-items:center;transition:.15s;padding:0;
}
.theme-toggle:hover{border-color:var(--muted);transform:translateY(-1px)}
.theme-toggle .ic-sun,.theme-toggle .ic-moon{display:inline-flex}
.theme-toggle .ic-moon{display:none}
:root[data-theme="light"] .theme-toggle .ic-moon{display:inline-flex}
:root[data-theme="light"] .theme-toggle .ic-sun{display:none}

/* ---------- Hero + tool ---------- */
.hero{padding:46px 0 6px;text-align:center}
.hero-small{padding-top:20px}
.hero h1{
  font-size:clamp(28px,5.4vw,44px);line-height:1.16;margin:8px 0 12px;font-weight:800;letter-spacing:-.5px;
}
.hero-sub{color:var(--muted);max-width:660px;margin:0 auto 28px;font-size:clamp(15.5px,2.4vw,17.5px)}
.hero-sub strong{color:var(--fg)}
.tool{
  max-width:760px;margin:0 auto;text-align:left;border-radius:22px;padding:22px;
  background:linear-gradient(var(--card),var(--card)) padding-box,
             linear-gradient(92deg,var(--cyan),var(--pink)) border-box;
  border:1.5px solid transparent;box-shadow:var(--shadow);
}
.tool-label{display:flex;align-items:center;gap:7px;font-weight:700;margin-bottom:12px;font-size:15.5px}
.tool-label .ic{color:var(--pink)}
.tool-row{display:flex;gap:10px;flex-wrap:wrap}
.tool-input{position:relative;flex:1 1 300px;min-width:min(100%,260px)}
.tool-input input{
  width:100%;background:var(--bg2);border:1px solid var(--line2);border-radius:13px;
  color:var(--fg);padding:15px 118px 15px 16px;font-size:16px;min-width:0;transition:.15s;min-height:54px;
}
.tool-input input::placeholder{color:var(--muted2)}
.tool-input input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(37,190,200,.20)}
.btn-paste{
  position:absolute;top:50%;right:6px;transform:translateY(-50%);
  display:inline-flex;align-items:center;gap:5px;min-height:32px;
  background:var(--card2);border:1px solid var(--line2);color:var(--fg);
  border-radius:999px;padding:4px 11px;font-size:12.5px;font-weight:700;line-height:1;cursor:pointer;transition:.15s;
}
.btn-paste [hidden]{display:none}
.btn-paste .ic-paste,.btn-paste .ic-clear{display:inline-flex;align-items:center;line-height:0}
.btn-paste .ic-paste[hidden],.btn-paste .ic-clear[hidden]{display:none}
.btn-paste svg{display:block}
.btn-paste #pasteBtnLabel{line-height:1}
.btn-paste:hover{border-color:var(--muted);background:var(--line2)}
.btn-primary{
  background:linear-gradient(92deg,var(--pink),var(--pink2));color:#fff;border:0;border-radius:13px;
  padding:14px 26px;font-size:16px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  box-shadow:0 8px 24px rgba(254,44,85,.35);transition:.15s;min-height:54px;
}
.btn-primary:hover{text-decoration:none;filter:brightness(1.09);transform:translateY(-1px)}
.btn-primary:disabled{opacity:.65;cursor:wait;transform:none}
.btn-ghost{
  background:var(--card2);color:var(--fg);border:1px solid var(--line2);border-radius:13px;
  padding:13px 20px;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.15s;min-height:54px;
}
.btn-ghost:hover{text-decoration:none;border-color:var(--muted)}
.tool-hint{color:var(--muted2);font-size:13.5px;margin:12px 2px 0}
.alert-error{
  max-width:760px;margin:18px auto 0;background:var(--alert-bg);border:1px solid var(--pink);
  color:var(--alert-fg);border-radius:13px;padding:14px 17px;text-align:left;
}

/* ---------- Result ---------- */
@keyframes td-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
#dlResult .result,#dlResult .alert-error{animation:td-in .35s ease both}
.result{
  max-width:760px;margin:24px auto 0;display:flex;gap:22px;text-align:left;
  background:var(--card);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow);
}
.result-media{position:relative;flex:0 0 auto;align-self:flex-start}
.result-media img{
  width:176px;height:234px;object-fit:cover;border-radius:15px;display:block;background:var(--bg2);
}
.play-badge{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  background:rgba(0,0,0,.55);color:#fff;pointer-events:none;
  backdrop-filter:blur(3px);
}
.play-badge .ic{margin-left:2px}
.dur-badge{
  position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.72);color:#fff;
  font-size:12.5px;font-weight:700;padding:2px 8px;border-radius:6px;pointer-events:none;
}
.result-body{flex:1 1 320px;min-width:0;display:flex;flex-direction:column}
.result-author{margin:0 0 6px;font-weight:700;display:flex;align-items:center;gap:10px;min-width:0}
.result-author .avatar{width:36px;height:36px;border-radius:50%;object-fit:cover;background:var(--bg2);flex:0 0 auto}
.result-author .a-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.result-author span{color:var(--muted);font-weight:400}
.result-title{font-size:16.5px;margin:0 0 18px;line-height:1.55;font-weight:600;color:var(--fg)}
.result-note{color:var(--muted);margin:0 0 12px}
.dl-buttons{display:flex;flex-direction:column;gap:12px}
.btn-dl{justify-content:center;text-align:center;width:100%;min-height:52px}
.btn-music{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;margin-top:12px;
  background:var(--cyan-d);border:1px solid rgba(37,190,200,.45);color:var(--cyan);
  border-radius:13px;padding:13px 18px;font-weight:700;transition:.15s;min-height:52px;
}
.btn-music:hover{text-decoration:none;filter:brightness(1.12)}
.ic{flex:0 0 auto}
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:14px}
.photo-grid figure{margin:0}
.photo-grid img{
  width:100%;height:176px;object-fit:cover;border-radius:13px;display:block;background:var(--bg2);
  transition:.2s;
}
.photo-grid figure:hover img{transform:scale(1.02)}
.photo-grid .btn-dl{
  margin-top:8px;background:var(--card2);border:1px solid var(--line2);color:var(--fg);
  border-radius:10px;padding:9px;font-size:14px;display:flex;align-items:center;justify-content:center;gap:6px;min-height:44px;
}

/* ---------- Đang xử lý (khi bấm Tải xuống bằng AJAX) ---------- */
.td-loading{
  max-width:760px;margin:24px auto 0;background:var(--card);border:1px solid var(--line);
  border-radius:22px;padding:26px;box-shadow:var(--shadow);text-align:left;
}
.td-loading-top{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.td-spinner{
  width:38px;height:38px;flex:0 0 auto;border-radius:50%;
  border:4px solid var(--line2);border-top-color:var(--pink);
  animation:td-spin .8s linear infinite;
}
@keyframes td-spin{to{transform:rotate(360deg)}}
.td-loading-title{font-weight:800;font-size:17px}
.td-loading-status{color:var(--muted);font-size:14.5px}
.td-load-bar{height:10px;border-radius:99px;background:var(--bg2);overflow:hidden}
.td-load-bar i{
  display:block;height:100%;width:0%;border-radius:99px;
  background:linear-gradient(92deg,var(--cyan),var(--pink));
  transition:width .3s ease;
}
.td-load-steps{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.td-load-steps li{color:var(--muted2);display:flex;align-items:center;gap:9px;font-size:14.5px}
.td-load-steps li .ic{opacity:0;transition:.2s}
.td-load-steps li.active{color:var(--fg);font-weight:600}
.td-load-steps li.done{color:var(--muted)}
.td-load-steps li.done .ic{opacity:1;color:var(--cyan)}
@media (prefers-reduced-motion: reduce){
  .td-spinner{animation-duration:2.4s}
  #dlResult .result,#dlResult .alert-error{animation:none}
}

/* ---------- Trang chờ tải (get.php) ---------- */
.gate-wrap{max-width:640px;margin:0 auto;padding-top:34px}
.gate-card{
  background:var(--card);border:1px solid var(--line);border-radius:22px;
  padding:28px;box-shadow:var(--shadow);text-align:center;
}
.gate-card h1{font-size:23px;margin:0 0 10px}
.gate-file{
  display:flex;align-items:center;justify-content:center;gap:9px;color:var(--muted);
  margin:0 0 18px;font-size:15px;min-width:0;
}
.gate-file span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gate-file .ic{color:var(--pink);flex:0 0 auto}
.gate-steps{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:9px;text-align:left}
.gate-steps li{color:var(--muted2);display:flex;align-items:center;gap:9px;font-size:15px}
.gate-steps li .ic{opacity:0}
.gate-steps li.active{color:var(--fg);font-weight:700}
.gate-steps li.done{color:var(--muted)}
.gate-steps li.done .ic{opacity:1;color:var(--cyan)}
.gate-bar{height:10px;border-radius:99px;background:var(--bg2);overflow:hidden;margin-bottom:12px}
.gate-bar i{display:block;height:100%;width:0%;background:linear-gradient(92deg,var(--cyan),var(--pink));transition:width .15s linear}
.gate-count{color:var(--muted);margin:0 0 6px;font-size:15px}
.gate-msg{color:var(--fg);margin:10px 0 0}
.gate-btn{width:100%;margin-top:20px;justify-content:center}
.gate-btn:disabled{opacity:.55;cursor:wait;box-shadow:none}
.gate-note{color:var(--muted2);font-size:13.5px;margin:14px 0 0}
.gate-card .ad-slot{padding:0;margin-top:18px}

/* ---------- Sections ---------- */
section h2{font-size:clamp(21px,3.6vw,26px);margin:48px 0 16px;font-weight:800;letter-spacing:-.3px;text-align:center}
section p.lead{color:var(--muted);text-align:center;max-width:640px;margin:0 auto 18px}
.steps-grid{
  list-style:none;padding:0;margin:0;counter-reset:step;
  display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
}
.steps-grid li{
  counter-increment:step;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;position:relative;color:var(--muted);
}
.steps-grid li::before{
  content:counter(step);display:grid;place-items:center;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--pink),var(--pink2));color:#fff;font-weight:800;font-size:15px;
  margin-bottom:12px;box-shadow:0 6px 16px rgba(254,44,85,.35);
}
.steps-grid strong{color:var(--fg)}
.feat-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.feat-grid article{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;transition:.18s;
}
.feat-grid article:hover{transform:translateY(-3px);border-color:var(--line2)}
.feat-ic{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:12px;
  background:linear-gradient(135deg,rgba(254,44,85,.16),rgba(37,190,200,.14));color:var(--pink);
}
.feat-grid h3{margin:0 0 7px;font-size:17px}
.feat-grid p,.content p{color:var(--muted);margin:0}
.content{max-width:760px;margin:0 auto}
.content h2{text-align:left}
.crosslinks{max-width:760px;margin:0 auto}
.crosslinks ul{padding-left:20px;color:var(--muted)}
.crosslinks li{margin:7px 0}
.faq{max-width:760px;margin:0 auto}
.faq details{
  background:var(--card);border:1px solid var(--line);border-radius:13px;
  padding:15px 19px;margin-bottom:11px;transition:.15s;
}
.faq details[open]{border-color:var(--line2)}
.faq summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--pink);font-size:20px;font-weight:800;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--muted);margin:9px 0 2px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);margin-top:30px;padding:28px 20px 36px;text-align:center;color:var(--muted2);font-size:14px}
.site-footer nav{display:flex;gap:8px 16px;justify-content:center;flex-wrap:wrap;margin-bottom:12px;max-width:1060px;margin-inline:auto}
.site-footer nav a{color:var(--muted)}
.site-footer p{max-width:660px;margin:0 auto}

/* ---------- Mobile ---------- */
@media (max-width:640px){
  .hero{padding-top:28px}
  .site-header{gap:10px;padding:10px 16px}
  .site-nav{margin-left:0;overflow-x:auto;flex-wrap:nowrap;max-width:100%;padding-bottom:2px;order:3;flex-basis:100%;scrollbar-width:none}
  .site-nav::-webkit-scrollbar{display:none}
  .site-nav a{white-space:nowrap}
  .header-actions{margin-left:auto}
  .tool{padding:16px}
  .tool-row .btn-primary{width:100%}
  .tool-input{flex-basis:100%}
  .result{flex-direction:column;align-items:center;padding:18px;gap:16px}
  .result--photo{align-items:stretch}
  .result-media{align-self:center}
  .result-media img{width:150px;height:200px}
  .result-body{width:100%}
  .photo-grid{grid-template-columns:repeat(auto-fill,minmax(108px,1fr));gap:12px}
  .photo-grid img{height:144px}
  section h2{text-align:left;margin-top:38px}
  .ad-slot{padding:0 16px}
}
/* ---------- PC lớn ---------- */
@media (min-width:1024px){
  .hero{padding-top:60px}
  .result-media img{width:188px;height:250px}
  .steps-grid,.feat-grid{gap:18px}
}