/* ═══════════════ KẾ TOÁN TINH GỌN — site.css ═══════════════ */

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

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

body {
  margin: 0;
  overflow-x: clip;
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: var(--lh);
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -.022em;
  color: var(--ink);
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -.015em; }
h4 { font-size: var(--fs-md); }
p { margin: 0 0 var(--s4); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }
a { color: var(--ink); text-decoration-color: color-mix(in srgb, var(--acc) 60%, transparent); text-underline-offset: .18em; }
a:hover { color: var(--acc-2); }
strong, b { font-weight: 700; color: var(--ink); }
small { font-size: var(--fs-xs); }
img, svg { max-width: 100%; display: block; height: auto; }
ul, ol { margin: 0; padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-sm); }
::selection { background: var(--acc); color: var(--white); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
@media (min-width: 768px) { .container { padding: 0 32px; } }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--white); padding: 12px 18px; border-radius: 0 0 var(--r) 0;
}
.skip:focus { left: 0; }

/* ───────────────────────── HEADER ───────────────────────── */
.hdr {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .93);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.hdr-in { display: flex; align-items: center; gap: var(--s4); min-height: 66px; }
.hdr-logo { flex: 0 0 auto; display: block; }
.hdr-logo .logo { width: 208px; height: auto; }
.nav { margin-left: auto; display: flex; align-items: center; gap: var(--s4); }
.nav-l { display: flex; align-items: center; gap: 2px; }
.nav-l > li > a, .nav-l > li > button {
  display: flex; align-items: center; gap: 5px; white-space: nowrap;
  font: inherit; font-size: var(--fs-sm); font-weight: 600;
  color: var(--text); background: none; border: 0; cursor: pointer;
  padding: 9px 11px; border-radius: var(--r-sm); text-decoration: none;
}
.nav-l > li > a:hover, .nav-l > li > button:hover { background: var(--paper); color: var(--ink); }
.has-sub { position: relative; }
.sub {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 296px;
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--shadow); padding: 8px; display: none;
}
.has-sub:hover .sub, .has-sub:focus-within .sub, .has-sub[data-open="1"] .sub { display: block; }
.sub a {
  display: block; padding: 9px 12px; font-size: var(--fs-sm); border-radius: var(--r-sm);
  color: var(--text); text-decoration: none; line-height: 1.4;
}
.sub a:hover { background: var(--paper); color: var(--ink); }
.sub-all { border-top: 1px solid var(--line-2); margin-top: 6px; padding-top: 4px; }
.sub-all a { color: var(--acc-2); font-weight: 700; }
.nav-cta { display: flex; align-items: center; gap: var(--s2); }
.burger { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.burger span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; }
.burger span + span { margin-top: 5px; }

@media (max-width: 1080px) {
  .burger { display: block; margin-left: auto; }
  .nav {
    position: fixed; inset: 66px 0 auto; margin: 0; display: none;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--white); border-bottom: 1px solid var(--line);
    max-height: calc(100vh - 66px); overflow-y: auto; padding: var(--s4) 20px var(--s6);
    box-shadow: var(--shadow);
  }
  .nav[data-open="1"] { display: flex; }
  .nav-l { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-l > li > a, .nav-l > li > button {
    width: 100%; justify-content: space-between; padding: 13px 4px;
    font-size: var(--fs-md); border-bottom: 1px solid var(--line-2);
  }
  .sub { position: static; display: none; box-shadow: none; border: 0; padding: 4px 0 10px 12px; min-width: 0; }
  .has-sub[data-open="1"] .sub { display: block; }
  .has-sub:hover .sub { display: none; }
  .has-sub[data-open="1"]:hover .sub { display: block; }
  .nav-cta { margin-top: var(--s5); flex-direction: column; align-items: stretch; }
  .nav-cta .btn { width: 100%; }
}

/* ───────────────────────── BUTTON ───────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-size: var(--fs-sm); font-weight: 700; line-height: 1;
  padding: 12px 18px; border-radius: var(--r); border: 1.6px solid transparent;
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background .15s, color .15s, border-color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn--pri { background: var(--acc); color: #fff; border-color: var(--acc); }
.btn--pri:hover { background: var(--acc-2); border-color: var(--acc-2); color: #fff; }
.btn--sec { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn--sec:hover { background: var(--ink-2); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--ink); background: var(--paper); }
.btn--onink { background: var(--white); color: var(--ink); border-color: var(--white); }
.btn--onink:hover { background: var(--paper); color: var(--ink); }
.btn--lg { font-size: var(--fs-base); padding: 15px 24px; }
.frm .btn, .btn--full { white-space: normal; text-align: center; line-height: 1.3; }
.btn--full { width: 100%; }

/* ───────────────────────── SECTION ───────────────────────── */
.sec { padding: clamp(48px, 6.5vw, 92px) 0; }
.sec--tight { padding: clamp(34px, 4vw, 56px) 0; }
.sec--white { background: var(--white); }
.sec--paper { background: var(--paper); }
.sec--ink { background: var(--ink); color: color-mix(in srgb, var(--white) 88%, var(--ink)); }
.sec--ink h1, .sec--ink h2, .sec--ink h3, .sec--ink h4, .sec--ink strong { color: var(--white); }
.sec--ink .lead { color: color-mix(in srgb, var(--white) 78%, var(--ink)); }
.sec--acc { background: var(--acc); color: #fff; }
.sec--acc h2, .sec--acc h3, .sec--acc strong { color: #fff; }
.sec + .sec--white { border-top: 1px solid var(--line-2); }

.head { max-width: 68ch; margin-bottom: var(--s6); }
.head--center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--acc-2); margin: 0 0 var(--s3);
}
.sec--ink .eyebrow, .sec--acc .eyebrow { color: color-mix(in srgb, var(--white) 82%, transparent); }
.lead { font-size: var(--fs-lg); line-height: var(--lh-snug); color: var(--text-2); margin-top: var(--s4); }
.sub-h { font-size: var(--fs-md); margin: var(--s6) 0 var(--s4); }

/* ───────────────────────── HERO ───────────────────────── */
.hero { background: var(--paper); border-bottom: 1px solid var(--line); overflow: hidden; }
.hero-in { display: grid; gap: clamp(28px, 4vw, 56px); padding: clamp(40px, 5.5vw, 78px) 0 clamp(36px, 4.5vw, 64px); }
.hero-in > * { min-width: 0; }
@media (min-width: 960px) { .hero-in { grid-template-columns: 1.15fr .85fr; align-items: center; } }
.hero h1 { font-size: var(--fs-hero); letter-spacing: -.032em; }
.hero-slogan {
  display: block; font-size: clamp(21px, 2.3vw, 30px); font-weight: 700;
  color: var(--acc-2); letter-spacing: -.02em; margin-top: var(--s4);
}
.hero-lead { font-size: var(--fs-lg); color: var(--text-2); margin: var(--s5) 0 var(--s6); max-width: 54ch; line-height: var(--lh-snug); }
.hero-btns { display: flex; flex-wrap: wrap; gap: var(--s3); }
.hero-fine { margin-top: var(--s4); font-size: var(--fs-sm); color: var(--text-3); }
.hero-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-xl);
  box-shadow: var(--shadow); padding: clamp(20px, 2.4vw, 30px);
}
.hero-card h2 { font-size: var(--fs-h3); }
.hero-card .frm { margin-top: var(--s4); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, max-content)); gap: var(--s5) var(--s6); margin-top: var(--s6); }
.stat { min-width: 0; }
.stat b { overflow-wrap: anywhere; }
.stat b { display: block; font-size: clamp(24px, 2.6vw, 32px); font-weight: 800; color: var(--ink); letter-spacing: -.02em; line-height: 1; }
.stat span { display: block; font-size: var(--fs-xs); color: var(--text-3); margin-top: 6px; }
.sec--ink .stat b, .ftr .stat b { color: var(--white); }
.ftr .stat span { color: color-mix(in srgb, var(--white) 60%, transparent); }

/* ───────────────────────── CARDS ───────────────────────── */
.cards { display: grid; gap: var(--s4); }
@media (min-width: 620px) { .cards--2, .cards--4 { grid-template-columns: repeat(2, 1fr); } .cards--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 940px) { .cards--3 { grid-template-columns: repeat(3, 1fr); } .cards--4 { grid-template-columns: repeat(4, 1fr); } }
.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: clamp(18px, 2vw, 26px); display: flex; flex-direction: column; gap: var(--s2);
}
.sec--paper .card { background: var(--white); }
.sec--white .card { background: var(--paper); border-color: transparent; }
.sec--ink .card { background: color-mix(in srgb, var(--white) 8%, transparent); border-color: color-mix(in srgb, var(--white) 16%, transparent); }
.card h3 { font-size: var(--fs-h3); }
.card p { color: var(--text-2); font-size: var(--fs-sm); line-height: 1.62; margin: 0; }
.sec--ink .card p { color: color-mix(in srgb, var(--white) 74%, transparent); }
.card-num { font-size: var(--fs-xs); font-weight: 700; letter-spacing: .1em; color: var(--acc-2); }
.card--link { text-decoration: none; transition: border-color .15s, box-shadow .15s, transform .15s; }
.card--link:hover { border-color: var(--acc); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.card-more { margin-top: auto; padding-top: var(--s3); font-size: var(--fs-sm); font-weight: 700; color: var(--acc-2); }

/* ───────────────────────── LISTS ───────────────────────── */
.check { display: grid; gap: var(--s3); margin: var(--s4) 0; }
@media (min-width: 700px) { .check--2 { grid-template-columns: repeat(2, 1fr); } .check--3 { grid-template-columns: repeat(3, 1fr); } }
.check li {
  position: relative; padding-left: 30px; font-size: var(--fs-sm);
  line-height: 1.6; color: var(--text-2);
}
.check li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 19px; height: 19px;
  border-radius: 50%; background: color-mix(in srgb, var(--acc) 16%, transparent);
}
.check li::after {
  content: ""; position: absolute; left: 5.5px; top: 9px; width: 8px; height: 4px;
  border-left: 2px solid var(--acc-2); border-bottom: 2px solid var(--acc-2);
  transform: rotate(-45deg);
}
.sec--ink .check li, .sec--acc .check li { color: color-mix(in srgb, var(--white) 82%, transparent); }
.sec--ink .check li::after, .sec--acc .check li::after { border-color: var(--white); }
.sec--acc .check li::before { background: rgba(255, 255, 255, .22); }
.dots { margin: var(--s4) 0; display: grid; gap: var(--s2); }
.dots li { position: relative; padding-left: 18px; font-size: var(--fs-sm); color: var(--text-2); line-height: 1.6; }
.dots li::before { content: ""; position: absolute; left: 3px; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--acc); }

/* ───────────────────────── STEPS ───────────────────────── */
.steps { display: grid; gap: var(--s4); counter-reset: s; }
@media (min-width: 780px) { .steps { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); } }
.steps li { display: flex; gap: var(--s4); background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--s5); }
.sec--white .steps li { background: var(--paper); border-color: transparent; }
.sec--ink .steps li { background: color-mix(in srgb, var(--white) 8%, transparent); border-color: color-mix(in srgb, var(--white) 15%, transparent); }
.steps-n {
  flex: 0 0 34px; height: 34px; border-radius: 50%; background: var(--acc); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: var(--fs-sm);
}
.steps h3 { font-size: var(--fs-md); margin-bottom: 6px; }
.steps p { font-size: var(--fs-sm); color: var(--text-2); margin: 0; line-height: 1.6; }
.sec--ink .steps p { color: color-mix(in srgb, var(--white) 74%, transparent); }

/* ───────────────────────── TABLE ───────────────────────── */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--white); }
.tbl { font-size: var(--fs-sm); min-width: 540px; }
.tbl th, .tbl td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line-2); vertical-align: top; }
.tbl th { background: var(--paper); font-weight: 700; color: var(--ink); font-size: var(--fs-xs); letter-spacing: .04em; text-transform: uppercase; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl td:first-child { font-weight: 600; color: var(--ink); }
.tbl--price td + td { font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl-note { font-size: var(--fs-xs); color: var(--text-3); margin-top: var(--s3); }

/* ───────────────────────── PACKS ───────────────────────── */
.packs { display: grid; gap: var(--s4); }
@media (min-width: 900px) { .packs { grid-template-columns: repeat(3, 1fr); align-items: start; } }
.packs-i {
  position: relative; background: var(--white); border: 1px solid var(--line);
  border-radius: var(--r-xl); padding: clamp(20px, 2.2vw, 28px); display: flex; flex-direction: column;
}
.packs-i--best { border-color: var(--acc); box-shadow: var(--shadow); }
.packs-badge {
  position: absolute; top: -11px; left: clamp(20px, 2.2vw, 28px);
  background: var(--acc); color: #fff; font-size: 11px; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px;
}
.packs-sub { font-size: var(--fs-xs); color: var(--text-3); margin: 6px 0 0; }
.packs-p { font-size: clamp(27px, 3vw, 34px); font-weight: 800; color: var(--ink); letter-spacing: -.03em; margin: var(--s4) 0 0; line-height: 1; }
.packs-p small { display: block; font-size: var(--fs-xs); font-weight: 600; color: var(--text-3); letter-spacing: 0; margin-bottom: 4px; }
.packs-p span { font-size: var(--fs-sm); font-weight: 600; color: var(--text-3); letter-spacing: 0; }
.packs-i .check { flex: 1; }
.packs-i .btn { margin-top: var(--s4); }

/* ───────────────────────── FAQ ───────────────────────── */
.faq { display: grid; gap: var(--s2); max-width: 900px; }
.faq details { background: var(--white); border: 1px solid var(--line); border-radius: var(--r-lg); }
.sec--white .faq details { background: var(--paper); border-color: transparent; }
.faq summary {
  cursor: pointer; list-style: none; padding: 16px 52px 16px 20px; position: relative;
  font-weight: 700; color: var(--ink); font-size: var(--fs-base); line-height: 1.45;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 20px; top: 23px; width: 11px; height: 11px;
  border-right: 2.2px solid var(--acc-2); border-bottom: 2.2px solid var(--acc-2);
  transform: rotate(45deg); transition: transform .18s;
}
.faq details[open] summary::after { transform: rotate(225deg); top: 25px; }
.faq-a { padding: 0 20px 18px; font-size: var(--fs-sm); color: var(--text-2); line-height: 1.68; }
.faq-a p + p { margin-top: var(--s3); }

/* ───────────────────────── CALLOUT / QUOTE ───────────────────────── */
.callout {
  border-radius: var(--r-lg); padding: var(--s5); font-size: var(--fs-sm);
  line-height: 1.68; margin: var(--s5) 0; border: 1px solid var(--line);
  background: var(--white); border-left: 4px solid var(--acc);
}
.callout--warn { background: var(--warn-bg); border-color: #F0E0BC; border-left-color: var(--warn); }
.callout--ink { background: var(--ink); color: color-mix(in srgb, var(--white) 86%, transparent); border-color: var(--ink); border-left-color: var(--acc); }
.callout--ink strong { color: var(--white); }
.quote { margin: var(--s5) 0; padding: var(--s5); background: var(--paper); border-radius: var(--r-lg); }
.quote p { font-size: var(--fs-md); color: var(--ink); font-weight: 500; line-height: 1.55; }
.quote cite { display: block; margin-top: var(--s3); font-size: var(--fs-xs); font-style: normal; color: var(--text-3); }

/* ───────────────────────── CTA + FORM ───────────────────────── */
.cta { display: grid; gap: clamp(28px, 4vw, 52px); }
.cta > *, .split > *, .cards > *, .packs > *, .steps > *, .hero-card, .panel { min-width: 0; }
@media (min-width: 940px) { .cta { grid-template-columns: 1fr 1fr; align-items: start; } }
.cta-or { margin-top: var(--s5); font-size: var(--fs-sm); color: var(--text-2); }
.cta-or a { font-weight: 700; }
.cta-r { background: var(--white); border: 1px solid var(--line); border-radius: var(--r-xl); padding: clamp(20px, 2.4vw, 30px); box-shadow: var(--shadow-sm); }

.frm { display: grid; gap: var(--s3); min-width: 0; }
.frm-row { display: grid; gap: var(--s3); min-width: 0; }
.frm-row > *, .fld { min-width: 0; }
@media (min-width: 560px) { .frm-row { grid-template-columns: 1fr 1fr; } }
.fld { display: grid; gap: 6px; }
.fld > span { font-size: var(--fs-xs); font-weight: 700; color: var(--ink); }
.fld i { color: var(--danger); font-style: normal; }
.fld input, .fld select, .fld textarea {
  font: inherit; font-size: var(--fs-sm); width: 100%; min-width: 0;
  padding: 11px 13px; border: 1.5px solid var(--line); border-radius: var(--r);
  background: var(--white); color: var(--text);
}
.fld textarea { resize: vertical; }
.fld input:focus, .fld select:focus, .fld textarea:focus { border-color: var(--acc); }
.fld input::placeholder, .fld textarea::placeholder { color: #A9B3B9; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; }
.frm-note { font-size: var(--fs-xs); color: var(--text-3); margin: 0; }
.frm-status { font-size: var(--fs-sm); font-weight: 600; margin: 0; min-height: 1.2em; }
.frm-status[data-s="ok"] { color: var(--ok); }
.frm-status[data-s="err"] { color: var(--danger); }

/* ───────────────────────── BANNER CTA ───────────────────────── */
.band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s5); }
.band h2 { max-width: 26ch; }
.band-btns { display: flex; flex-wrap: wrap; gap: var(--s3); }

/* ───────────────────────── CRUMBS ───────────────────────── */
.crumbs { background: var(--paper); border-bottom: 1px solid var(--line); font-size: var(--fs-xs); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; padding: 11px 0; color: var(--text-3); }
.crumbs li + li::before { content: "›"; margin-right: 8px; color: var(--text-3); }
.crumbs a { color: var(--text-2); text-decoration: none; }
.crumbs a:hover { color: var(--acc-2); text-decoration: underline; }

/* ───────────────────────── PAGE HEAD ───────────────────────── */
.phead { background: var(--paper); padding: clamp(34px, 4.5vw, 62px) 0 clamp(30px, 4vw, 52px); border-bottom: 1px solid var(--line); }
.phead .lead { max-width: 62ch; }
.phead-meta { display: flex; flex-wrap: wrap; gap: var(--s5); margin-top: var(--s5); font-size: var(--fs-xs); color: var(--text-3); }
.phead-price { display: inline-flex; align-items: baseline; gap: 6px; margin-top: var(--s5); background: var(--white); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; font-size: var(--fs-sm); }
.phead-price b { font-size: var(--fs-md); color: var(--ink); }

/* ───────────────────────── PROSE (blog) ───────────────────────── */
.prose { max-width: 74ch; }
.prose h2 { font-size: clamp(22px, 2.4vw, 30px); margin: var(--s8) 0 var(--s4); }
.prose h3 { margin: var(--s6) 0 var(--s3); }
.prose p, .prose li { font-size: var(--fs-md); line-height: 1.78; color: var(--text); }
.prose .check li, .prose .dots li { color: var(--text-2); font-size: var(--fs-base); }
.prose .tbl { min-width: 480px; }
.prose .tbl td, .prose .tbl th { font-size: var(--fs-sm); }
.prose > ol:not([class]) { margin: var(--s4) 0; display: grid; gap: var(--s3); counter-reset: n; }
.prose > ol:not([class]) > li { position: relative; padding-left: 34px; counter-increment: n; }
.prose > ol:not([class]) > li::before {
  content: counter(n); position: absolute; left: 0; top: 3px; width: 23px; height: 23px;
  border-radius: 50%; background: var(--ink); color: #fff; font-size: 12px; font-weight: 700;
  display: grid; place-items: center;
}
.toc { background: var(--paper); border-radius: var(--r-lg); padding: var(--s5); margin: var(--s5) 0 var(--s7); }
.toc h2 { font-size: var(--fs-md) !important; margin: 0 0 var(--s3) !important; }
.toc ol { display: grid; gap: 7px; counter-reset: t; }
.toc li { counter-increment: t; font-size: var(--fs-sm); }
.toc li::before { content: counter(t) ". "; color: var(--text-3); }
.toc a { color: var(--text-2); }
.post-meta { display: flex; flex-wrap: wrap; gap: var(--s4); font-size: var(--fs-xs); color: var(--text-3); margin-top: var(--s4); }
.post-tag { display: inline-block; background: color-mix(in srgb, var(--acc) 14%, transparent); color: var(--acc-2); font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 4px 10px; border-radius: 999px; }
.postlist { display: grid; gap: var(--s4); }
@media (min-width: 700px) { .postlist { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .postlist { grid-template-columns: repeat(3, 1fr); } }
.postlist .card h3 { font-size: var(--fs-md); }

.split { display: grid; gap: clamp(26px, 3.5vw, 48px); }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; align-items: start; } .split--sticky > :last-child { position: sticky; top: 90px; } }
.panel { background: var(--white); border: 1px solid var(--line); border-radius: var(--r-xl); padding: clamp(20px, 2.4vw, 30px); }
.sec--white .panel { background: var(--paper); border-color: transparent; }

.map { border: 0; width: 100%; height: 340px; border-radius: var(--r-lg); display: block; filter: saturate(.9); }

/* ───────────────────────── FOOTER ───────────────────────── */
.ftr { background: var(--ink); color: color-mix(in srgb, var(--white) 72%, var(--ink)); padding: clamp(44px, 5vw, 72px) 0 var(--s5); font-size: var(--fs-sm); }
.ftr-top { display: grid; gap: var(--s6); padding-bottom: var(--s6); border-bottom: 1px solid color-mix(in srgb, var(--white) 15%, transparent); }
@media (min-width: 760px) { .ftr-top { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .ftr-top { grid-template-columns: 1.5fr 1fr 1fr 1.1fr; } }
.ftr-brand .logo { width: 218px; margin-bottom: var(--s4); }
.ftr-brand p { color: color-mix(in srgb, var(--white) 62%, transparent); max-width: 40ch; line-height: 1.65; }
.ftr h3 { color: var(--white); font-size: var(--fs-sm); margin-bottom: var(--s3); letter-spacing: 0; font-weight: 700; }
.ftr h3.mt { margin-top: var(--s5); }
.ftr ul { display: grid; gap: 9px; }
.ftr a { color: color-mix(in srgb, var(--white) 70%, transparent); text-decoration: none; }
.ftr a:hover { color: var(--white); text-decoration: underline; }
.ftr-contact li { color: color-mix(in srgb, var(--white) 66%, transparent); line-height: 1.55; }
.ftr .btn { margin-top: var(--s4); }
.ftr-bot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s3); padding-top: var(--s5); font-size: var(--fs-xs); color: color-mix(in srgb, var(--white) 52%, transparent); }
.ftr-bot p { margin: 0; }

/* ───────────────────────── MOBILE BAR ───────────────────────── */
.mbar { display: none; }
@media (max-width: 860px) {
  .mbar {
    display: grid; grid-template-columns: 1fr 1fr 1.25fr; gap: 1px;
    position: fixed; inset: auto 0 0; z-index: 99;
    background: var(--line); border-top: 1px solid var(--line);
    padding: 0; box-shadow: 0 -4px 16px rgba(15, 47, 68, .1);
  }
  .mbar a {
    display: flex; align-items: center; justify-content: center; gap: 7px;
    background: var(--white); color: var(--ink); text-decoration: none;
    font-size: var(--fs-xs); font-weight: 700; padding: 13px 6px;
  }
  .mbar-cta { background: var(--acc) !important; color: #fff !important; }
  body { padding-bottom: 52px; }
}

@media print {
  .hdr, .mbar, .ftr, .cta-r, .crumbs { display: none !important; }
  body { font-size: 11pt; }
}

/* ═══════════════════════════════════════════════════════════════════
   HÌNH ẢNH, MINH HOẠ & HIỆU ỨNG
   ═══════════════════════════════════════════════════════════════════ */

/* ── Icon trong thẻ ─────────────────────────────────────────────── */
.ico-box {
  display: inline-grid; place-items: center;
  width: 42px; height: 42px; border-radius: 11px;
  background: color-mix(in srgb, var(--acc) 15%, transparent);
  color: var(--acc-2); margin-bottom: var(--s3);
  border: 1px solid color-mix(in srgb, var(--acc) 28%, transparent);
}
.ico { width: 22px; height: 22px; }
.card--link:hover .ico-box { background: var(--acc); color: #fff; border-color: var(--acc); }
.sec--ink .ico-box { background: rgba(255, 255, 255, .10); color: var(--acc); border-color: rgba(255, 255, 255, .18); }
.card .card-num { display: block; margin-bottom: 4px; }

/* ── Nền kẻ dòng như trang sổ + vệt sáng ────────────────────────── */
.hero { position: relative; }
.hero > .container { position: relative; z-index: 2; }
.ruled {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background-image: repeating-linear-gradient(
    to bottom, transparent 0 31px,
    color-mix(in srgb, var(--ink) 7%, transparent) 31px 32px);
  mask-image: linear-gradient(to bottom, transparent, #000 22%, #000 62%, transparent);
}
.glow {
  position: absolute; z-index: 0; right: -12%; top: -32%;
  width: 62vw; height: 62vw; max-width: 780px; max-height: 780px;
  pointer-events: none; border-radius: 50%;
  background: radial-gradient(circle at 50% 50%,
    color-mix(in srgb, var(--acc) 22%, transparent) 0%,
    color-mix(in srgb, var(--acc) 6%, transparent) 42%, transparent 68%);
}
.hero h1 .hero-slogan {
  display: inline; padding: 0 .1em .05em 0;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
  background-image: linear-gradient(transparent 64%, color-mix(in srgb, var(--acc) 34%, transparent) 64%);
}
.hero h1 .hero-slogan::before { content: ""; display: block; height: var(--s4); }

/* ── Dải tin cậy dưới hero ──────────────────────────────────────── */
.trust {
  display: flex; flex-wrap: wrap; gap: var(--s3) var(--s6);
  padding: var(--s4) 0 0; margin-top: var(--s5);
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}
.trust li {
  display: flex; align-items: center; gap: 9px;
  font-size: var(--fs-xs); font-weight: 600; color: var(--text-2);
}
.trust .ico { width: 17px; height: 17px; color: var(--acc-2); flex: 0 0 auto; }

/* ── SIGNATURE: báo cáo tháng một trang ─────────────────────────── */
.rp { margin: 0; }
.rp-paper {
  background: var(--paper-warm, #FBF8F1); border: 1px solid var(--line);
  border-radius: 4px; box-shadow: var(--shadow-paper, var(--shadow));
  padding: clamp(20px, 2.6vw, 34px); position: relative; overflow: hidden;
}
.rp-paper::before {
  content: ""; position: absolute; inset: 0 0 0 auto; width: 5px;
  background: linear-gradient(var(--acc), var(--ink));
}
.rp-h { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--s4);
  padding-bottom: var(--s4); border-bottom: 1.5px solid color-mix(in srgb, var(--ink) 16%, transparent); }
.rp-kicker { font-size: 11px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase;
  color: var(--text-3); margin: 0 0 5px; }
.rp-h h3 { font-size: var(--fs-lg); }
.rp-seal {
  flex: 0 0 auto; width: 84px; height: 84px; border-radius: 50%;
  border: 2px solid var(--seal, #A3352C); color: var(--seal, #A3352C);
  display: grid; place-items: center; text-align: center;
  transform: rotate(-11deg) scale(.4); opacity: 0;
  transition: transform .45s cubic-bezier(.2, 1.5, .5, 1), opacity .25s;
}
.rp-seal::before { content: ""; position: absolute; width: 74px; height: 74px; border-radius: 50%;
  border: 1px solid currentColor; opacity: .55; }
.rp-seal b { font-size: 11px; font-weight: 800; line-height: 1.15; letter-spacing: .04em; color: inherit; }
.rp-seal i { display: block; font-style: normal; font-size: 9px; letter-spacing: .18em; margin-top: 3px; opacity: .8; }
.rp.is-in .rp-seal { transform: rotate(-11deg) scale(1); opacity: .85; }

.rp-rows { display: grid; gap: 2px; margin: var(--s4) 0; }
.rp-rows li {
  display: grid; grid-template-columns: minmax(96px, 1.25fr) minmax(60px, 2fr) auto;
  align-items: center; gap: var(--s3); padding: 10px 0;
  border-bottom: 1px dashed color-mix(in srgb, var(--ink) 13%, transparent);
}
.rp-l { font-size: var(--fs-xs); color: var(--text-2); }
.rp-bar { height: 8px; border-radius: 999px; background: color-mix(in srgb, var(--ink) 8%, transparent); overflow: hidden; }
.rp-bar i { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--ink);
  transition: width 1s cubic-bezier(.2, .8, .2, 1); }
.rp-bar i[data-dir="up"] { background: var(--acc); }
.rp-bar i[data-dir="down"] { background: color-mix(in srgb, var(--seal, #A3352C) 62%, var(--ink)); }
.rp.is-in .rp-bar i { width: var(--w); }
.rp-v { font-size: var(--fs-sm); white-space: nowrap; font-variant-numeric: tabular-nums; text-align: right; }
.rp-v b { font-size: var(--fs-md); color: var(--ink); }
.rp-v small { color: var(--text-3); }
.rp-note { background: color-mix(in srgb, var(--acc) 12%, transparent); border-left: 3px solid var(--acc);
  border-radius: 0 var(--r-sm) var(--r-sm) 0; padding: 13px 15px; }
.rp-note p { font-size: var(--fs-xs); line-height: 1.62; color: var(--text-2); margin: 0; }
.rp-f { display: flex; justify-content: space-between; margin-top: var(--s4); padding-top: var(--s3);
  border-top: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  font-size: 10.5px; letter-spacing: .05em; text-transform: uppercase; color: var(--text-3); }
.rp figcaption { margin-top: var(--s4); font-size: var(--fs-sm); color: var(--text-2); line-height: 1.6; }
.sec--ink .rp figcaption { color: color-mix(in srgb, var(--white) 72%, transparent); }

/* ── Banner đầu bài viết ────────────────────────────────────────── */
.pbanner {
  display: flex; align-items: center; gap: var(--s3);
  height: 76px; margin-bottom: var(--s5); padding: 0 var(--s5);
  border-radius: var(--r-lg); color: var(--white); overflow: hidden; position: relative;
  background: linear-gradient(105deg, var(--ink) 0%, var(--ink-2) 62%, var(--acc-2) 160%);
}
.pbanner::after {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: repeating-linear-gradient(115deg, transparent 0 15px, rgba(255, 255, 255, .05) 15px 16px);
}
.pbanner-i { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 11px;
  background: rgba(255, 255, 255, .13); border: 1px solid rgba(255, 255, 255, .2); position: relative; z-index: 1; }
.pbanner-i .ico { width: 23px; height: 23px; }
.pbanner-t { font-size: var(--fs-xs); font-weight: 700; letter-spacing: .13em;
  text-transform: uppercase; position: relative; z-index: 1; }

/* ── Header đổ bóng khi cuộn ────────────────────────────────────── */
.hdr { transition: box-shadow .2s, border-color .2s; }
.hdr.is-stuck { box-shadow: 0 6px 20px rgba(19, 43, 77, .10); }

/* ── Hiện dần khi cuộn tới ──────────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); }
  .reveal.is-in {
    opacity: 1; transform: none;
    transition: opacity .5s ease var(--d, 0ms), transform .55s cubic-bezier(.2, .8, .2, 1) var(--d, 0ms);
  }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  .rp-bar i { width: var(--w) !important; transition: none; }
  .rp-seal { opacity: .85 !important; transform: rotate(-11deg) !important; }
}

/* ── Nhấn nhá nhỏ ───────────────────────────────────────────────── */
.packs-i--best { position: relative; }
.packs-i--best::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
  background: linear-gradient(180deg, color-mix(in srgb, var(--acc) 26%, transparent), transparent 55%);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude; padding: 1.5px;
}
.btn--pri { box-shadow: 0 1px 0 color-mix(in srgb, var(--acc-2) 80%, #000) inset, 0 6px 16px color-mix(in srgb, var(--acc) 35%, transparent); }
.btn--pri:hover { box-shadow: 0 8px 22px color-mix(in srgb, var(--acc) 45%, transparent); }
.faq details[open] { border-color: color-mix(in srgb, var(--acc) 45%, transparent); }
.tbl tbody tr:hover td { background: color-mix(in srgb, var(--acc) 6%, transparent); }
.sec--acc { background: linear-gradient(100deg, var(--ink), var(--ink-2) 55%, var(--acc-2)); }
.sec--acc h2, .sec--acc strong { color: #fff; }

/* Khối giấy nằm trên nền navy — chữ phải trở lại màu mực đậm */
.sec--ink .rp-paper, .sec--ink .rp-paper h3, .sec--ink .rp-paper strong,
.sec--ink .rp-paper b { color: var(--ink); }
.sec--ink .rp-paper .rp-l, .sec--ink .rp-paper .rp-note p { color: var(--text-2); }
.sec--ink .rp-paper .rp-kicker, .sec--ink .rp-paper .rp-f,
.sec--ink .rp-paper .rp-v small { color: var(--text-3); }
.sec--ink .rp-seal b, .sec--ink .rp-seal i { color: var(--seal, #A3352C); }
.sec--ink .cta-or { color: color-mix(in srgb, var(--white) 74%, transparent); }
.sec--ink .cta-or a, .sec--ink a { color: var(--acc); }
.sec--ink .cta-or a:hover { color: #fff; }

/* ═══════════════════════════════════════════════════════════════════
   BẢNG MÀU TƯƠI 2026 — ghép đồ hoạ riêng + hiệu ứng chuyển động
   ═══════════════════════════════════════════════════════════════════ */

/* ── Hero: nền xếp lớp (lưới điểm + vệt sáng trôi + vòng cung quay) ── */
.hero {
  background: var(--paper);
  background-image: url("../img/bg-dots.svg");
  background-size: 28px 28px;
  isolation: isolate;
}
.ruled { display: none; }
.glow { display: none; }
.hero::before, .hero::after {
  content: ""; position: absolute; z-index: 0; pointer-events: none;
  background-repeat: no-repeat; background-size: contain;
}
.hero::before {
  background-image: url("../img/bg-blob-teal.svg");
  width: 62vw; max-width: 760px; aspect-ratio: 1; right: -14vw; top: -22vw;
  animation: drift 22s ease-in-out infinite alternate;
}
.hero::after {
  background-image: url("../img/bg-blob-violet.svg");
  width: 46vw; max-width: 560px; aspect-ratio: 1; left: -16vw; bottom: -20vw;
  animation: drift 26s ease-in-out infinite alternate-reverse;
}
.hero-arcs {
  position: absolute; z-index: 0; right: -9vw; top: 50%; translate: 0 -50%;
  width: min(52vw, 640px); aspect-ratio: 1; opacity: .55; pointer-events: none;
  background: url("../img/bg-hero-arcs.svg") center/contain no-repeat;
  animation: spin 90s linear infinite;
}
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-3.5vw, 3vw, 0) scale(1.1); }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Sóng chuyển tiếp giữa các khối ─────────────────────────────── */
.wave { position: relative; height: clamp(34px, 4.4vw, 64px); overflow: hidden; }
.wave::before {
  content: ""; position: absolute; inset: 0;
  background-repeat: no-repeat; background-size: 100% 100%;
}
.wave--to-white::before { background-image: url("../img/wave-white.svg"); }
.wave--to-paper::before { background-image: url("../img/wave-paper.svg"); }
.wave--to-ink::before { background-image: url("../img/wave-ink.svg"); }
.wave--from-ink::before { background-image: url("../img/wave-ink-up.svg"); }
.wave--on-white { background: var(--white); }
.wave--on-paper { background: var(--paper); }
.wave--on-ink { background: var(--ink); }

/* ── Băng chạy: các thay đổi quy định mới ───────────────────────── */
.ticker {
  background: var(--ink); color: #fff; overflow: hidden;
  border-bottom: 1px solid color-mix(in srgb, var(--white) 14%, transparent);
}
.ticker-in { display: flex; gap: 0; width: max-content; animation: slide 38s linear infinite; }
.ticker:hover .ticker-in { animation-play-state: paused; }
.ticker span {
  display: flex; align-items: center; gap: 12px; padding: 9px 22px;
  font-size: var(--fs-xs); font-weight: 600; white-space: nowrap;
  color: color-mix(in srgb, var(--white) 82%, transparent);
}
.ticker span::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--lime); flex: 0 0 auto;
}
.ticker span:nth-child(3n)::before { background: var(--acc); }
.ticker span:nth-child(3n+1)::before { background: var(--coral); }
@keyframes slide { to { transform: translateX(-50%); } }

/* ── Dải CTA dùng banner thiết kế riêng ─────────────────────────── */
.sec--acc {
  background: var(--ink) url("../img/banner-cta.svg") center/cover no-repeat;
  position: relative;
}
.sec--acc .btn--onink { background: var(--acc); color: #05231F; border-color: var(--acc); }
.sec--acc .btn--onink:hover { background: var(--lime); border-color: var(--lime); color: #2A1F00; }

/* ── Banner đầu bài viết dùng file SVG ──────────────────────────── */
.pbanner {
  height: clamp(86px, 10vw, 116px); background-size: cover; background-position: center;
  background-image: url("../img/banner-post-1.svg");
}
.pbanner::after { display: none; }
[data-cat="2"] .pbanner { background-image: url("../img/banner-post-2.svg"); }
[data-cat="3"] .pbanner { background-image: url("../img/banner-post-3.svg"); }
[data-cat="4"] .pbanner { background-image: url("../img/banner-post-4.svg"); }
.pbanner-i { background: rgba(255, 255, 255, .16); border-color: rgba(255, 255, 255, .28); }

/* ── Thanh tiến độ đọc bài ──────────────────────────────────────── */
.progress {
  position: fixed; inset: 0 auto auto 0; height: 3px; width: 0; z-index: 120;
  background: linear-gradient(90deg, var(--acc), var(--lime));
  transition: width .1s linear;
}

/* ── Icon nhiều màu, xoay nhẹ khi trỏ chuột ─────────────────────── */
.ico-box {
  background: color-mix(in srgb, var(--acc) 14%, transparent);
  color: var(--acc-2); border-color: color-mix(in srgb, var(--acc) 30%, transparent);
  transition: transform .28s cubic-bezier(.2, 1.4, .4, 1), background .2s, color .2s;
}
.cards > *:nth-child(4n+2) .ico-box {
  background: color-mix(in srgb, var(--violet) 13%, transparent);
  color: #5B3BE0; border-color: color-mix(in srgb, var(--violet) 28%, transparent);
}
.cards > *:nth-child(4n+3) .ico-box {
  background: color-mix(in srgb, var(--lime) 24%, transparent);
  color: #96650B; border-color: color-mix(in srgb, var(--lime) 46%, transparent);
}
.cards > *:nth-child(4n+4) .ico-box {
  background: color-mix(in srgb, var(--coral) 14%, transparent);
  color: #D33552; border-color: color-mix(in srgb, var(--coral) 30%, transparent);
}
.card--link:hover .ico-box { transform: rotate(-8deg) scale(1.08); }
.card--link:hover .ico-box, .cards > *:nth-child(n) .card--link:hover .ico-box { color: #fff; }
.card--link:hover .ico-box { background: var(--acc); border-color: var(--acc); }

/* ── Thẻ: viền sáng chạy khi trỏ chuột ──────────────────────────── */
.card--link { position: relative; overflow: hidden; }
.card--link::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--acc), var(--lime));
  transition: width .35s cubic-bezier(.2, .8, .2, 1);
}
.card--link:hover::after { width: 100%; }
.card--link:hover { border-color: color-mix(in srgb, var(--acc) 55%, transparent); }

/* ── Điều hướng: gạch chân vẽ dần ───────────────────────────────── */
.nav-l > li > a, .nav-l > li > button { position: relative; }
.nav-l > li > a::after, .nav-l > li > button::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 4px; height: 2px;
  background: var(--acc); border-radius: 2px; transform: scaleX(0); transform-origin: left;
  transition: transform .26s cubic-bezier(.2, .8, .2, 1);
}
.nav-l > li > a:hover::after, .nav-l > li > button:hover::after { transform: scaleX(1); }
@media (max-width: 1080px) { .nav-l > li > a::after, .nav-l > li > button::after { display: none; } }

/* ── Nút chính: vệt sáng quét qua ───────────────────────────────── */
.btn--pri { position: relative; overflow: hidden; color: #04231F;
  box-shadow: var(--shadow-acc); }
.btn--pri:hover { background: var(--lime); border-color: var(--lime); color: #2A1F00;
  box-shadow: 0 10px 26px color-mix(in srgb, var(--lime) 45%, transparent); }
.btn--pri::before {
  content: ""; position: absolute; inset: 0 auto 0 -60%; width: 45%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .55), transparent);
  transform: skewX(-18deg);
}
.btn--pri:hover::before { animation: sheen .75s ease; }
@keyframes sheen { to { left: 120%; } }

/* ── Hero: xuất hiện theo thứ tự khi tải trang ──────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .hero-in > div > *, .hero-card { animation: rise .7s cubic-bezier(.2, .8, .2, 1) both; }
  .hero-in > div > *:nth-child(1) { animation-delay: .05s; }
  .hero-in > div > *:nth-child(2) { animation-delay: .13s; }
  .hero-in > div > *:nth-child(3) { animation-delay: .21s; }
  .hero-in > div > *:nth-child(4) { animation-delay: .29s; }
  .hero-in > div > *:nth-child(5) { animation-delay: .35s; }
  .hero-in > div > *:nth-child(6) { animation-delay: .41s; }
  .hero-in > div > *:nth-child(7) { animation-delay: .47s; }
  .hero-card { animation-delay: .2s; }
  @keyframes rise { from { opacity: 0; transform: translateY(18px); } }
}

/* ── Khối thống kê: số nhảy có màu riêng ────────────────────────── */
.stat b { background: linear-gradient(180deg, var(--ink), var(--ink-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.ftr .stat b { background: linear-gradient(180deg, #fff, var(--acc)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ── Dải tin cậy: icon nảy nhẹ luân phiên ───────────────────────── */
.trust .ico { color: var(--acc-2); }
.trust li:nth-child(2) .ico { color: #5B3BE0; }
.trust li:nth-child(3) .ico { color: #96650B; }
.trust li:nth-child(4) .ico { color: #D33552; }
@media (prefers-reduced-motion: no-preference) {
  .trust li .ico { animation: nudge 5.5s ease-in-out infinite; }
  .trust li:nth-child(2) .ico { animation-delay: .6s; }
  .trust li:nth-child(3) .ico { animation-delay: 1.2s; }
  .trust li:nth-child(4) .ico { animation-delay: 1.8s; }
  @keyframes nudge { 0%, 82%, 100% { transform: none; } 88% { transform: translateY(-3px) rotate(-6deg); } }
}

/* ── Báo cáo mẫu: đổi sang bảng màu mới ─────────────────────────── */
.rp-paper::before { background: linear-gradient(var(--acc), var(--violet)); }
.rp-bar i { background: var(--ink-2); }
.rp-bar i[data-dir="up"] { background: linear-gradient(90deg, var(--acc), var(--lime)); }
.rp-bar i[data-dir="down"] { background: linear-gradient(90deg, var(--coral), #FF8FA3); }
.rp-note { background: color-mix(in srgb, var(--acc) 11%, transparent); border-left-color: var(--acc); }
.rp-seal { border-color: var(--coral); color: var(--coral); }

/* ── Minh hoạ luồng số liệu ─────────────────────────────────────── */
.illus { max-width: 620px; margin: 0 auto; }
.illus img { width: 100%; }
@media (prefers-reduced-motion: no-preference) {
  .illus.is-in img { animation: fadein .8s ease both; }
  @keyframes fadein { from { opacity: 0; transform: scale(.97); } }
}

/* ── FAQ: mở ra mượt ────────────────────────────────────────────── */
.faq summary::after { border-color: var(--acc-2); }
.faq details[open] { border-color: color-mix(in srgb, var(--acc) 50%, transparent);
  box-shadow: var(--shadow-sm); }
@media (prefers-reduced-motion: no-preference) {
  .faq details[open] .faq-a { animation: unfold .3s ease both; }
  @keyframes unfold { from { opacity: 0; transform: translateY(-6px); } }
}

/* ── Bảng giá: gói nổi bật có viền chuyển sắc ───────────────────── */
.packs-i--best { border-color: transparent; background:
  linear-gradient(var(--white), var(--white)) padding-box,
  linear-gradient(135deg, var(--acc), var(--violet)) border-box;
  border: 2px solid transparent; }
.packs-i--best::before { display: none; }
.packs-badge { background: linear-gradient(90deg, var(--acc), var(--violet)); color: #fff; }
.packs-p { background: linear-gradient(135deg, var(--ink), var(--ink-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ── Thanh dưới cùng trên mobile ────────────────────────────────── */
.mbar-cta { background: linear-gradient(100deg, var(--acc), var(--lime)) !important; color: #04231F !important; }

/* ── Tôn trọng chế độ giảm chuyển động ──────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .hero::before, .hero::after, .hero-arcs, .ticker-in, .trust li .ico { animation: none !important; }
  .btn--pri::before { display: none; }
}

/* ── Sửa tương phản icon trên nền mực đêm ───────────────────────── */
.sec--ink .cards > * .ico-box,
.sec--ink .ico-box {
  background: rgba(255, 255, 255, .10) !important;
  border-color: rgba(255, 255, 255, .22) !important;
  color: var(--acc) !important;
}
.sec--ink .cards > *:nth-child(4n+2) .ico-box { color: #A78BFF !important; }
.sec--ink .cards > *:nth-child(4n+3) .ico-box { color: var(--lime) !important; }
.sec--ink .cards > *:nth-child(4n+4) .ico-box { color: #FF8FA3 !important; }

/* ── Sóng: thấp và mềm, chỉ ở ranh giới khối nền đậm ────────────── */
.wave { height: clamp(26px, 3vw, 44px); }
.wave::before { background-size: 100% 100%; }

/* ── Tinh chỉnh cuối: vệt sáng hero nhẹ hơn, minh hoạ có khung ───── */
.hero::before { opacity: .62; }
.hero::after { opacity: .5; }
.illus {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-xl);
  padding: clamp(14px, 2vw, 26px); margin: 0 auto var(--s6);
}
.sec--paper .illus { background: var(--white); }
.illus figcaption { display: none; }

/* ── Khối "Trả lời nhanh" — đoạn tự chứa cho AI và người đọc gấp ─── */
.tln {
  margin: var(--s5) 0 0; padding: var(--s5) var(--s5) var(--s5) calc(var(--s5) + 4px);
  background: var(--white); border: 1px solid var(--line);
  border-left: 4px solid var(--acc); border-radius: 0 var(--r-lg) var(--r-lg) 0;
  box-shadow: var(--shadow-sm); max-width: 78ch;
}
.tln-nhan {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .1em;
  text-transform: uppercase; color: var(--acc-2); margin-bottom: 7px;
}
.tln-p { font-size: var(--fs-md); line-height: 1.72; color: var(--text); margin: 0; }
.prose .tln { margin-top: 0; margin-bottom: var(--s5); }

/* ── Khối nguồn tham khảo ────────────────────────────────────────── */
.nguon { margin: var(--s8) 0 0; padding-top: var(--s5); border-top: 2px solid var(--line); }
.nguon h2 { font-size: var(--fs-lg) !important; margin: 0 0 var(--s4) !important; }
.nguon-l { display: grid; gap: 9px; counter-reset: ng; }
.nguon-l li { counter-increment: ng; position: relative; padding-left: 26px;
  font-size: var(--fs-sm); line-height: 1.6; }
.nguon-l li::before {
  content: "[" counter(ng) "]"; position: absolute; left: 0; top: 1px;
  font-size: 11.5px; font-weight: 700; color: var(--acc-2);
}
.nguon-note { font-size: var(--fs-xs); color: var(--text-3); margin-top: var(--s4);
  line-height: 1.6; }

/* ── Từ điển thuật ngữ ───────────────────────────────────────────── */
.tn-ml { margin-top: var(--s5); font-size: var(--fs-xs); line-height: 2.1; color: var(--text-3); max-width: 90ch; }
.tn-ml a { color: var(--acc-2); text-decoration: none; }
.tn-ml a:hover { text-decoration: underline; }
.tn { display: grid; gap: var(--s4); }
@media (min-width: 820px) { .tn { grid-template-columns: repeat(2, 1fr); } }
.tn-i { background: var(--paper); border: 1px solid transparent; border-radius: var(--r-lg);
  padding: var(--s5); scroll-margin-top: 90px; min-width: 0; }
.tn-i:target { border-color: var(--acc); background: var(--white); box-shadow: var(--shadow-sm); }
.tn-t { font-size: var(--fs-md); margin-bottom: 7px; }
.tn-d { font-size: var(--fs-sm); line-height: 1.68; color: var(--text-2); margin: 0; }