/* =============================================================================
   IdolFX — website marketing tĩnh (idolhub.net)
   CSS dùng chung cho TẤT CẢ trang trong /site/
   Tông tối · mobile-first · KHÔNG CDN · KHÔNG web font ngoài (system-ui)
   ============================================================================= */

:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg2: #0f1420;
  --card: #131b2e;
  --card2: #0f1628;
  --line: #2a3752;
  --txt: #e2e8f0;
  --dim: #8fa0c0;
  --purple: #b58cff;
  --sky: #38bdf8;
  --gold: #f6c453;
  --green: #22c55e;
  --red: #f87171;
  --max: 1120px;
  --r: 16px;
  --r-sm: 12px;
  --shadow: 0 18px 44px rgb(0 0 0 / .38);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100dvh;
  overflow-x: hidden;
  color: var(--txt);
  background:
    radial-gradient(1200px 560px at 50% -12%, #1c2750 0%, rgba(11, 16, 32, 0) 62%),
    var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

img { max-width: 100%; display: block; border: 0; }
a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: .1px; }
h1 { font-size: 1.72rem; font-weight: 800; }
h2 { font-size: 1.34rem; font-weight: 800; }
h3 { font-size: 1.08rem; font-weight: 700; }
h4 { font-size: .95rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li { margin: .3em 0; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .88em;
  background: #0d1424;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 1px 6px;
  color: #d9e3f7;
  word-break: break-word;
}
hr { border: 0; border-top: 1px solid var(--line); margin: 26px 0; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 2px; border-radius: 6px; }

.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;
}

/* ---------------------------------- Layout --------------------------------- */

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.sec { padding: 40px 0; }
.sec + .sec { border-top: 1px solid rgb(42 55 82 / .55); }
.sec-head { margin-bottom: 20px; }
.sec-head p { color: var(--dim); margin: 0; max-width: 62ch; }
.lead { font-size: 1.02rem; color: var(--dim); }

.grid { display: grid; gap: 14px; }
.grid.two { grid-template-columns: 1fr; }
.grid.three { grid-template-columns: 1fr; }
@media (min-width: 720px) {
  h1 { font-size: 2.3rem; }
  h2 { font-size: 1.62rem; }
  .sec { padding: 56px 0; }
  .grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
  .grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
}

/* ---------------------------------- Header --------------------------------- */

.hdr {
  position: sticky; top: 0; z-index: 50;
  background: rgb(11 16 32 / .86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.hdr-in { display: flex; align-items: center; gap: 12px; min-height: 60px; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--txt); font-weight: 800; }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%;
  display: block; object-fit: cover; object-position: center;
}
.logo-txt { font-size: 1.06rem; letter-spacing: .2px; }
.logo-sub { font-size: .72rem; color: var(--purple); border: 1px solid rgb(181 140 255 / .45);
  border-radius: 999px; padding: 2px 7px; margin-left: 2px; font-weight: 700; }

/* ------------------------ Nút / chip tài khoản ở header ------------------------
   acct.js (vanilla) đổ nội dung vào #acctSlot: chưa đăng nhập -> nút "Đăng nhập",
   đã đăng nhập -> chip avatar + tên. Slot rỗng thì ẩn hẳn nên layout không đổi. */
.acct { display: flex; align-items: center; flex-shrink: 0; }
.acct:empty { display: none; }
/* Có chip thì chip đẩy cả cụm [chip][☰] sang phải; chưa có thì ☰ tự đẩy như trước */
.acct:not(:empty) { margin-left: auto; }
.acct:not(:empty) ~ .nav-toggle { margin-left: 0; }
.acct-login {
  display: inline-flex; align-items: center; height: 34px; padding: 0 13px;
  border: 1px solid rgb(181 140 255 / .5); border-radius: 999px;
  color: var(--txt); background: rgb(181 140 255 / .1);
  font-size: .82rem; font-weight: 700; white-space: nowrap; flex-shrink: 0;
}
.acct-login:hover { background: rgb(181 140 255 / .22); border-color: var(--purple); text-decoration: none; }
.acct-chip {
  display: inline-flex; align-items: center; gap: 7px; height: 34px;
  padding: 0 11px 0 3px; max-width: 200px; flex-shrink: 0;
  border: 1px solid var(--line); border-radius: 999px; background: #151d33;
  color: var(--txt); font-size: .82rem; font-weight: 700;
}
.acct-chip:hover { border-color: rgb(181 140 255 / .55); text-decoration: none; }
.acct-av, .acct-av-txt { width: 28px; height: 28px; border-radius: 50%; flex: 0 0 auto; }
.acct-av { display: block; object-fit: cover; background: #1b2440; }
.acct-av-txt {
  display: grid; place-items: center; font-size: .78rem; font-weight: 900; color: #170f2e;
  background: linear-gradient(145deg, var(--purple), var(--sky));
}
.acct-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
/* < 560px: chỉ còn avatar cho gọn, không tràn ngang */
@media (max-width: 559px) {
  .acct-name { display: none; }
  .acct-chip { padding: 0 3px; }
}

.nav-toggle {
  margin-left: auto; width: 42px; height: 38px; cursor: pointer;
  background: #151d33; border: 1px solid var(--line); border-radius: 11px;
  color: var(--txt); font: inherit; font-size: 1.05rem; line-height: 1;
}
.nav { display: none; }
.nav.open { display: block; }
.nav a {
  display: block; padding: 11px 4px; color: var(--txt); font-size: .95rem;
  border-bottom: 1px solid rgb(42 55 82 / .5);
}
.nav a:hover { text-decoration: none; color: var(--purple); }
.nav a.on { color: var(--purple); font-weight: 700; }
.nav .btn { margin: 12px 0 4px; text-align: center; }
.nav-full { flex-basis: 100%; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  /* gap/padding hơi chặt: nav 8 link + chip tài khoản phải vừa 1 hàng trong 1120-32px */
  .nav {
    display: flex; align-items: center; gap: 2px; margin-left: auto; flex-wrap: wrap;
  }
  /* Có chip tài khoản: đẩy chip xuống CUỐI hàng (bên phải nút "Mua ngay") và để nav tự
     đẩy sang phải như cũ — nếu không, nav + chip cộng lại vượt bề ngang và nav bị xuống dòng. */
  .acct:not(:empty) { order: 1; margin-left: 8px; }
  .acct:not(:empty) ~ .nav { margin-left: auto; }
  .nav.open { display: flex; }
  .nav a { border: 0; padding: 8px 10px; border-radius: 10px; }
  .nav a:hover { background: #151d33; }
  .nav a.on { background: #1b2340; }
  .nav .btn { margin: 0 0 0 8px; }
  .nav-full { flex-basis: auto; }
}
/* Menu mobile mở ra thì header thành khối dọc */
.hdr-in { flex-wrap: wrap; }
.hdr-in > .nav { width: 100%; padding-bottom: 10px; }
@media (min-width: 900px) { .hdr-in > .nav { width: auto; padding-bottom: 0; } }

/* ---------------------------------- Buttons -------------------------------- */

.btn {
  display: inline-block; font: inherit; font-size: .95rem; font-weight: 700;
  padding: 12px 18px; border-radius: 13px; cursor: pointer; text-align: center;
  border: 1px solid var(--line); background: #1b2440; color: var(--txt);
  transition: transform .1s ease, filter .15s ease, background .15s ease;
}
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.btn:active { transform: scale(.99); }
.btn-sm { padding: 9px 14px; font-size: .88rem; border-radius: 11px; }
.btn-lg { padding: 15px 22px; font-size: 1.02rem; }
.btn-primary {
  background: linear-gradient(180deg, #b58cff, #8b5cf6);
  border-color: #c9acff; color: #1a1030;
}
.btn-sky { background: linear-gradient(180deg, #38bdf8, #0ea5e9); border-color: #7dd3fc; color: #04202e; }
.btn-green { background: linear-gradient(180deg, #22c55e, #16a34a); border-color: #4ade80; color: #04210f; }
.btn-gold { background: linear-gradient(180deg, #f6c453, #e0a72c); border-color: #fbd77e; color: #2a1f04; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--txt); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
.btn-row .btn { flex: 1 1 auto; }
@media (min-width: 560px) { .btn-row .btn { flex: 0 0 auto; } }
.btn-block { display: block; width: 100%; }

/* ---------------------------------- Cards ---------------------------------- */

.card {
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 16px; box-shadow: var(--shadow);
}
.card.tight { padding: 14px; }
.card > :last-child { margin-bottom: 0; }
.card h3 { margin-bottom: .35em; }
.card p { color: var(--dim); margin-bottom: .7em; }
.card ul { color: var(--dim); margin-bottom: 0; }
.card li { font-size: .93rem; }
.card.purple { border-color: rgb(181 140 255 / .5); }
.card.sky { border-color: rgb(56 189 248 / .45); }
.card.gold { border-color: rgb(246 196 83 / .5); }
.card.green { border-color: rgb(34 197 94 / .45); }

.ico {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  font-size: 1.2rem; margin-bottom: 10px;
  background: rgb(181 140 255 / .12); border: 1px solid rgb(181 140 255 / .38);
}
.ico.sky { background: rgb(56 189 248 / .12); border-color: rgb(56 189 248 / .38); }
.ico.gold { background: rgb(246 196 83 / .12); border-color: rgb(246 196 83 / .38); }
.ico.green { background: rgb(34 197 94 / .12); border-color: rgb(34 197 94 / .38); }
.ico.red { background: rgb(248 113 113 / .12); border-color: rgb(248 113 113 / .38); }

/* ---------------------------------- Pills ---------------------------------- */

.pill {
  display: inline-block; font-size: .76rem; font-weight: 700; line-height: 1.5;
  padding: 4px 10px; border-radius: 999px; margin: 0 6px 6px 0;
  color: var(--purple); background: rgb(181 140 255 / .12);
  border: 1px solid rgb(181 140 255 / .4);
}
.pill.sky { color: #bae6fd; background: rgb(56 189 248 / .12); border-color: rgb(56 189 248 / .4); }
.pill.gold { color: #fde9b8; background: rgb(246 196 83 / .12); border-color: rgb(246 196 83 / .4); }
.pill.green { color: #bbf7d0; background: rgb(34 197 94 / .12); border-color: rgb(34 197 94 / .4); }
.pill.grey { color: var(--dim); background: rgb(143 160 192 / .1); border-color: rgb(143 160 192 / .32); }

/* ---------------------------------- Hero ----------------------------------- */

.hero { position: relative; overflow: hidden; padding: 34px 0 8px; }
.hero::after {
  content: ""; position: absolute; left: 50%; top: -120px; width: 720px; height: 340px;
  transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgb(181 140 255 / .22), transparent);
}
.hero-in { position: relative; z-index: 1; }
.hero h1 { max-width: 22ch; }
.hero .lead { max-width: 60ch; font-size: 1.05rem; }
@media (min-width: 720px) { .hero { padding: 56px 0 14px; } }

.hero-points { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 10px; }
.hero-points li {
  display: grid; grid-template-columns: 30px 1fr; gap: 10px; align-items: start;
  background: rgb(19 27 46 / .75); border: 1px solid var(--line);
  border-radius: 14px; padding: 12px 13px; font-size: .94rem; color: #cfd9ee; margin: 0;
}
.hero-points b { color: var(--txt); }
.hero-points .e { font-size: 1.05rem; line-height: 1.4; }
@media (min-width: 860px) { .hero-points { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.stat-row {
  display: grid; gap: 10px; margin-top: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 720px) { .stat-row { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-sm);
  padding: 12px 13px;
}
.stat b { display: block; font-size: 1.16rem; color: var(--gold); font-weight: 800; }
.stat span { font-size: .82rem; color: var(--dim); }

/* -------------------------- Ảnh / khung mẫu (shot) -------------------------- */
/* Ảnh chưa có thì KHÔNG hiện khung vỡ: JS onerror gắn .noimg và gỡ <img>,
   khi đó .shot-fb (khối thay thế) hiện ra. */

.shot {
  position: relative; margin: 0; border-radius: 14px; overflow: hidden;
  border: 1px solid var(--line); background: linear-gradient(160deg, #18213c, #101728);
  min-height: 132px;
}
.shot img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; }
.shot-fb {
  display: none; position: absolute; inset: 0; place-items: center; text-align: center;
  padding: 14px; font-size: .84rem; color: var(--dim);
}
.shot-fb span { display: block; font-size: 1.4rem; margin-bottom: 6px; opacity: .75; }
.shot.noimg { display: grid; place-items: center; }
.shot.noimg .shot-fb { display: grid; position: static; inset: auto; }
.shot.noimg img { display: none; }
.shot figcaption {
  font-size: .8rem; color: var(--dim); padding: 9px 11px;
  border-top: 1px solid var(--line); background: rgb(15 20 32 / .8);
}

/* ---------------------------------- Callout -------------------------------- */

.callout {
  border: 1px solid rgb(34 197 94 / .45); border-radius: var(--r);
  background: linear-gradient(180deg, rgb(34 197 94 / .1), rgb(19 27 46 / .6));
  padding: 18px;
}
.callout h3 { color: #bbf7d0; }
.callout.warn {
  border-color: rgb(246 196 83 / .45);
  background: linear-gradient(180deg, rgb(246 196 83 / .1), rgb(19 27 46 / .6));
}
.callout.warn h3 { color: #fde9b8; }
.callout.info {
  border-color: rgb(56 189 248 / .42);
  background: linear-gradient(180deg, rgb(56 189 248 / .09), rgb(19 27 46 / .6));
}
.callout.info h3 { color: #bae6fd; }
.callout.bad {
  border-color: rgb(248 113 113 / .42);
  background: linear-gradient(180deg, rgb(248 113 113 / .1), rgb(19 27 46 / .6));
}
.callout.bad h3 { color: #fecaca; }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout.big { padding: 22px; }
@media (min-width: 720px) { .callout.big { padding: 28px; } }

.note { font-size: .86rem; color: var(--dim); }
.tag-list { list-style: none; padding: 0; margin: 0; }
.tag-list li {
  display: grid; grid-template-columns: 22px 1fr; gap: 8px; align-items: start;
  font-size: .93rem; color: #cfd9ee;
}
.tag-list .t { color: var(--green); font-weight: 800; }
.tag-list .x { color: var(--red); font-weight: 800; }
.tag-list .n { color: var(--gold); font-weight: 800; }

/* ---------------------------------- Tables --------------------------------- */

.tw { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--r); }
table.tbl {
  width: 100%; border-collapse: collapse; min-width: 560px; font-size: .92rem;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  overflow: hidden;
}
table.tbl th, table.tbl td { padding: 11px 13px; text-align: left; border-bottom: 1px solid var(--line); }
table.tbl thead th {
  background: #18213c; font-size: .78rem; text-transform: uppercase; letter-spacing: .6px;
  color: var(--dim); white-space: nowrap;
}
table.tbl tbody tr:last-child td { border-bottom: 0; }
table.tbl td:first-child { color: var(--txt); font-weight: 600; }
table.tbl .num { color: var(--gold); font-weight: 800; white-space: nowrap; }
table.tbl .yes { color: var(--green); font-weight: 700; }
table.tbl .no { color: var(--red); font-weight: 700; }
table.tbl .hl { background: rgb(181 140 255 / .07); }

/* Bảng so sánh 4 cột: mobile xếp dọc, mỗi ô tự ghi nhãn cột */
@media (max-width: 700px) {
  table.cmp { min-width: 0; border: 0; background: transparent; }
  table.cmp thead { display: none; }
  table.cmp, table.cmp tbody, table.cmp tr, table.cmp td { display: block; width: 100%; }
  table.cmp tr {
    background: linear-gradient(180deg, var(--card), var(--card2));
    border: 1px solid var(--line); border-radius: 14px;
    padding: 12px; margin-bottom: 12px;
  }
  table.cmp td { border: 0; padding: 7px 0; }
  table.cmp td::before {
    content: attr(data-label); display: block;
    font-size: .72rem; text-transform: uppercase; letter-spacing: .6px;
    color: var(--dim); margin-bottom: 2px;
  }
  table.cmp td:first-child { font-size: 1rem; font-weight: 800; padding-top: 0; }
  table.cmp td:first-child::before { display: none; }
}

/* ---------------------------------- Price ---------------------------------- */

.prices { display: grid; gap: 14px; }
@media (min-width: 860px) { .prices { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: start; } }
.price {
  position: relative; background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--line); border-radius: var(--r); padding: 18px; box-shadow: var(--shadow);
}
.price.feat { border-color: rgb(246 196 83 / .6); background: linear-gradient(180deg, #1d2138, #14192c); }
.price .ribbon {
  position: absolute; top: -12px; left: 16px;
  font-size: .74rem; font-weight: 800; letter-spacing: .4px;
  padding: 4px 10px; border-radius: 999px;
  background: linear-gradient(180deg, #f6c453, #e0a72c); color: #2a1f04;
  border: 1px solid #fbd77e;
}
.price h3 { margin: 4px 0 2px; font-size: 1.05rem; }
.price .amount { font-size: 1.9rem; font-weight: 900; color: var(--txt); letter-spacing: -.4px; }
.price .amount small { font-size: .82rem; font-weight: 600; color: var(--dim); letter-spacing: 0; }
.price.feat .amount { color: var(--gold); }
.price .sub { font-size: .85rem; color: var(--dim); margin-bottom: 12px; }
.price ul { list-style: none; padding: 0; margin: 0 0 16px; }
.price li { display: grid; grid-template-columns: 18px 1fr; gap: 8px; font-size: .91rem; color: #cfd9ee; }
.price li .t { color: var(--green); font-weight: 800; }
.price li .n { color: var(--gold); font-weight: 800; }
.price .btn { width: 100%; }

/* ---------------------------------- Steps ---------------------------------- */

.steps { counter-reset: st; list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps > li {
  counter-increment: st; position: relative; margin: 0;
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--line); border-radius: var(--r);
  padding: 15px 16px 15px 58px; box-shadow: var(--shadow);
}
.steps > li::before {
  content: counter(st);
  position: absolute; left: 15px; top: 15px;
  width: 30px; height: 30px; border-radius: 10px; display: grid; place-items: center;
  font-size: .9rem; font-weight: 900; color: #170f2e;
  background: linear-gradient(145deg, var(--purple), var(--sky));
}
.steps > li h3 { font-size: 1rem; margin-bottom: .3em; }
.steps > li > :last-child { margin-bottom: 0; }
.steps ol, .steps ul { padding-left: 1.15em; }
.steps li li { font-size: .92rem; color: var(--dim); }

/* ----------------------------------- FAQ ----------------------------------- */

.faq { display: grid; gap: 10px; }
.faq details {
  background: linear-gradient(180deg, var(--card), var(--card2));
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
}
.faq details[open] { border-color: rgb(181 140 255 / .5); }
.faq summary {
  cursor: pointer; padding: 14px 16px; font-weight: 700; font-size: .97rem;
  list-style: none; display: grid; grid-template-columns: 1fr 22px; gap: 10px; align-items: start;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--purple); font-size: 1.2rem; line-height: 1; text-align: center; }
.faq details[open] summary::after { content: "–"; }
.faq .a { padding: 0 16px 15px; color: var(--dim); font-size: .93rem; }
.faq .a > :last-child { margin-bottom: 0; }

/* ---------------------------------- TOC ------------------------------------ */

.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.toc a {
  font-size: .85rem; font-weight: 600; padding: 7px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: #151d33; color: var(--txt);
}
.toc a:hover { text-decoration: none; border-color: var(--purple); color: var(--purple); }

/* ------------------------------- Trang pháp lý ------------------------------ */

.legal { max-width: 74ch; }
.legal h2 { margin-top: 30px; padding-top: 4px; }
.legal h2:first-of-type { margin-top: 8px; }
.legal h3 { margin-top: 20px; color: #d8c8ff; }
.legal ul li, .legal ol li { color: var(--dim); }
.legal b, .legal strong { color: var(--txt); }
.meta-line { font-size: .85rem; color: var(--dim); }

/* -------------------------------- CTA cuối --------------------------------- */

.cta-end {
  border: 1px solid rgb(181 140 255 / .45); border-radius: var(--r);
  background: linear-gradient(140deg, rgb(181 140 255 / .14), rgb(56 189 248 / .08) 55%, rgb(19 27 46 / .7));
  padding: 22px; text-align: center;
}
.cta-end h2 { margin-bottom: .35em; }
.cta-end p { color: var(--dim); max-width: 56ch; margin: 0 auto 18px; }
.cta-end .btn-row { justify-content: center; }
@media (min-width: 720px) { .cta-end { padding: 34px; } }

/* --------------------------------- Footer ---------------------------------- */

.ftr { margin-top: 44px; border-top: 1px solid var(--line); background: #0a0f1d; padding: 28px 0 18px; }
.ftr-in { display: grid; gap: 22px; }
@media (min-width: 720px) { .ftr-in { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 26px; } }
.ftr h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .7px; color: var(--dim); margin-bottom: .7em; }
.ftr a { display: block; font-size: .9rem; color: var(--txt); padding: 3px 0; }
.ftr a:hover { color: var(--purple); }
.ftr p { font-size: .88rem; color: var(--dim); }
.ftr .about { max-width: 34ch; }
.ftr-bot {
  margin-top: 22px; padding-top: 14px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 6px 16px; justify-content: space-between;
  align-items: center;
  font-size: .82rem; color: var(--dim);
}
/* Logo trang trí ở đáy trang chủ — chỉ để nhận diện, chữ bên trong ảnh không cần đọc */
.ftr-brand { display: inline-flex; align-items: center; gap: 10px; }
.ftr-mark { width: 72px; height: 72px; flex: 0 0 auto; opacity: .92; }
.ftr-bot a { display: inline; font-size: .82rem; color: var(--dim); }
.zalo-box { border: 1px dashed rgb(246 196 83 / .5); border-radius: 12px; padding: 10px 12px; background: rgb(246 196 83 / .06); }
.zalo-box p { margin: 0 0 4px; font-size: .86rem; color: var(--dim); }
.zalo-box p:last-child { margin-bottom: 0; }
.zalo-box b { color: var(--gold); }

/* -------------------------------- Tiện ích --------------------------------- */

.center { text-align: center; }
.mt0 { margin-top: 0; }
.mb0 { margin-bottom: 0; }
.mt14 { margin-top: 14px; }
.mt22 { margin-top: 22px; }
.muted { color: var(--dim); }
.gold { color: var(--gold); }
.green { color: var(--green); }
.purple { color: var(--purple); }
.sky { color: var(--sky); }
.nowrap { white-space: nowrap; }
.small { font-size: .88rem; }
.stack > * + * { margin-top: 14px; }

.skip {
  position: absolute; left: 8px; top: -60px; z-index: 99;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 9px 14px; color: var(--txt);
}
.skip:focus { top: 8px; }

@media print {
  .hdr, .ftr, .nav-toggle, .cta-end .btn-row { display: none; }
  body { background: #fff; color: #111; }
}