/* NEXT.sps — trang giới thiệu sản phẩm · hệ màu navy + gold, giọng trầm lắng */
:root {
  --navy: #0E2340;
  --navy-2: #17335A;
  --navy-3: #22436f;
  --navy-card: #12294a;
  --navy-line: #24406b;
/* 
  --navy: #198753;
  --navy-2: #198778;
  --navy-3: #1fbaa5;
  --navy-card: #198778;
  --navy-line: #198778; */

  --gold: #B8922E;
  --gold-2: #ccaa4a;
  --gold-soft: #efe4c6;
  --ink: #20303d;
  --muted: #5f6f7c;
  --paper: #f7f5ef;
  --white: #fff;
  --line: #e7e1d3;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px
}

h1,
h2,
h3 {
  color: var(--navy);
  font-weight: 700;
  letter-spacing: .1px
}

p {
  margin: 10px 0
}

.muted {
  color: var(--muted)
}

a {
  color: var(--navy)
}

.subhero a {
  color: var(--gold);
}

.kicker {
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin: 0 0 8px
}

.serif {
  font-family: var(--serif)
}

/* ---------- Nav + dropdown ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(14, 35, 64, .97);
  color: #eaf0f7
}

.navrow {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 60px
}

.logo {
  font-weight: 800;
  letter-spacing: .4px;
  font-size: 1.05rem;
  color: #eaf0f7;
  text-decoration: none;
  margin-right: 18px
}

.logo b {
  color: var(--gold-2)
}

.menu {
  display: flex;
  align-items: center;
  gap: 4px
}

.mi {
  position: relative
}

.menu a {
  color: #c6d2e0;
  text-decoration: none;
  font-size: .9rem;
  padding: 8px 12px;
  border-radius: 6px;
  display: inline-block
}

.menu a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .06)
}

.drop {
  display: none;
  position: absolute;
  top: 40px;
  left: 0;
  min-width: 230px;
  background: #0c1e38;
  border: 1px solid var(--navy-line);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .35)
}

.mi:hover .drop {
  display: block
}

.drop a {
  display: block;
  color: #cdd8e6;
  font-size: .88rem;
  padding: 8px 12px;
  border-radius: 6px;
  white-space: nowrap
}

.drop a:hover {
  background: rgba(184, 146, 46, .16);
  color: #fff
}

.sp {
  flex: 1
}

.btn {
  display: inline-block;
  background: var(--gold);
  color: #20180a;
  padding: 9px 18px;
  border-radius: 5px;
  font-weight: 600;
  text-decoration: none;
  font-size: .9rem;
  cursor: pointer
}

.btn:hover {
  background: var(--gold-2)
}

/* hamburger — ẩn ở desktop, hiện ở mobile (xem @media 760) */
.nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none
}

.burger {
  display: none
}

/* ---------- Home hero ---------- */
.hero {
  background: var(--navy);
  color: #eef2f8;
  padding: 64px 0 72px
}

.hero .grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 40px;
  align-items: center
}

.hero h1 {
  color: #fff;
  font-size: 2.3rem;
  line-height: 1.24;
  margin: 6px 0 0
}

.hero p {
  color: #c4d0df;
  font-size: 1.08rem;
  max-width: 46ch
}

.hero .eco {
  color: var(--gold-2);
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-top: 22px
}

.hero .btn {
  display: inline-block;
  margin-top: 24px
}

.ecobox {
  background: var(--navy-card);
  border: 1px solid var(--navy-line);
  border-radius: 14px;
  padding: 22px
}

.ecobox .cap {
  color: #9fb2ca;
  font-size: .78rem;
  text-align: center;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-top: 6px
}

/* ---------- Sub hero (trang chi tiết) ---------- */
.subhero {
  background: var(--navy);
  color: #eef2f8;
  padding: 44px 0 46px
}

.crumb {
  font-size: .82rem;
  color: #9fb2ca;
  margin: 0 0 14px
}

.crumb a {
  color: #c6d2e0;
  text-decoration: none
}

.crumb a:hover {
  color: #fff
}

.subhero h1 {
  color: #fff;
  font-size: 2rem;
  line-height: 1.24;
  margin: 0;
  max-width: 22ch
}

.subhero .tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--gold-2);
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px
}

.subhero p {
  color: #c4d0df;
  font-size: 1.08rem;
  max-width: 60ch;
  margin: 16px 0 0
}

/* ---------- Sections ---------- */
section {
  padding: 60px 0
}

section.alt {
  background: var(--white);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line)
}

h2.big {
  font-size: 1.75rem;
  margin: 0 0 6px
}

.lead {
  font-size: 1.08rem;
  color: #3a4855;
  max-width: 66ch
}

/* pains */
.pains {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 26px
}

.pain {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold-soft);
  border-radius: 8px;
  padding: 16px 18px
}

.pain b {
  color: var(--navy)
}

.pain p {
  margin: 4px 0 0;
  font-size: .92rem;
  color: var(--muted)
}

/* feature/card grid */
.feats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px
}

.feats.two {
  grid-template-columns: 1fr 1fr
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 20px;
  transition: border-color .15s;
  text-decoration: none;
  color: inherit;
  display: block
}

a.card:hover {
  border-color: var(--gold)
}

.card .ic {
  width: 42px;
  height: 42px;
  border: 1.5px solid var(--gold);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-weight: 800;
  margin-bottom: 12px
}

.card h3 {
  font-size: 1.08rem;
  margin: 0 0 4px
}

.card p {
  font-size: .93rem;
  color: #48555f;
  margin: 6px 0 0
}

.card .tag {
  display: inline-block;
  margin-top: 10px;
  font-size: .76rem;
  color: var(--gold);
  font-weight: 700
}

.card .more {
  display: inline-block;
  margin-top: 12px;
  font-size: .82rem;
  color: var(--gold);
  font-weight: 600
}

/* how-it-works numbered */
.how {
  counter-reset: h;
  margin-top: 24px
}

.how .s {
  counter-increment: h;
  position: relative;
  padding: 16px 0 16px 60px;
  border-top: 1px solid var(--line)
}

.how .s:first-child {
  border-top: none
}

.how .s::before {
  content: counter(h);
  position: absolute;
  left: 0;
  top: 16px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-2);
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700
}

.how .s h3 {
  font-size: 1.08rem;
  margin: 0 0 3px
}

.how .s p {
  margin: 4px 0 0;
  color: #48555f
}

/* callout */
.callout {
  background: #fbf7ec;
  border: 1px solid var(--gold-soft);
  border-left: 4px solid var(--gold);
  border-radius: 10px;
  padding: 18px 22px;
  margin: 22px 0
}

.callout b {
  color: var(--navy)
}

.callout .principle {
  font-weight: 600;
  color: var(--navy)
}

/* bullets */
.checks {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 26px
}

.checks li {
  position: relative;
  padding-left: 24px;
  font-size: .97rem
}

.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold)
}

.checks li b {
  color: var(--navy)
}

/* effect tiles */
.eff {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 26px
}

.tile {
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: 10px;
  padding: 20px 18px
}

.tile h3 {
  font-size: 1rem;
  margin: 0 0 4px
}

.tile p {
  font-size: .9rem;
  color: var(--muted);
  margin: 4px 0 0
}

/* flow band */
.flow {
  background: var(--navy);
  color: #e7edf5
}

.flow .steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 26px
}

.flow .dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--navy-card);
  border: 2px solid var(--gold);
  color: var(--gold-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 12px
}

.flow h3 {
  color: #fff;
  font-size: 1.02rem;
  margin: 0 0 4px
}

.flow p {
  color: #b7c4d5;
  font-size: .9rem;
  margin: 4px 0 0
}

.flow .line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 8px 0 0;
  opacity: .5
}

/* split / flex / trust */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
  align-items: start;
  margin-top: 24px
}

.flexcard {
  background: #fbf7ec;
  border: 1px solid var(--gold-soft);
  border-radius: 12px;
  padding: 26px
}

.flexcard h3 {
  font-size: 1.2rem;
  margin: 0 0 8px
}

.trust {
  list-style: none;
  margin: 0;
  padding: 0
}

.trust li {
  padding: 10px 0 10px 18px;
  border-left: 2px solid var(--gold);
  margin-bottom: 8px
}

.trust b {
  color: var(--navy)
}

.trust span {
  display: block;
  font-size: .9rem;
  color: var(--muted)
}

/* related pages */
.related {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px
}

.pill {
  display: inline-block;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 8px 16px;
  font-size: .88rem;
  text-decoration: none;
  color: var(--navy)
}

.pill:hover {
  border-color: var(--gold);
  color: var(--gold)
}

/* footer */
footer {
  background: var(--navy);
  color: #c4d0df;
  text-align: center;
  padding: 60px 24px
}

footer h2 {
  color: #fff;
  font-size: 1.6rem;
  margin: 0 0 10px
}

footer .btn {
  display: inline-block;
  margin-top: 14px;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold-2)
}
footer .btn:hover {
  background: var(--gold);
  color: #20180a
}

footer .flinks {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  justify-content: center
}

footer .flinks a {
  color: #9fb2ca;
  text-decoration: none;
  font-size: .86rem
}

footer .flinks a:hover {
  color: #fff
}

footer small {
  display: block;
  margin-top: 26px;
  color: #6f7d8f;
  font-size: .8rem
}

/* responsive */
@media(max-width:900px) {

  .hero .grid,
  .split {
    grid-template-columns: 1fr
  }

  .pains,
  .feats,
  .feats.two,
  .eff {
    grid-template-columns: 1fr 1fr
  }

  .flow .steps {
    grid-template-columns: 1fr 1fr
  }

  .checks {
    grid-template-columns: 1fr
  }
}

@media(max-width:560px) {
  .wrap {
    padding: 0 20px
  }

  section {
    padding: 46px 0
  }

  .hero {
    padding: 40px 0 48px
  }

  .subhero {
    padding: 32px 0 34px
  }

  .pains,
  .feats,
  .eff,
  .flow .steps {
    grid-template-columns: 1fr
  }

  h2.big {
    font-size: 1.5rem
  }

  .hero h1 {
    font-size: 1.85rem
  }

  .subhero h1 {
    font-size: 1.6rem
  }
}

/* mega dropdown — nhóm tính năng theo nghiệp vụ */
.drop.mega {
  min-width: 560px;
  grid-template-columns: 1fr 1fr;
  gap: 0 18px;
  padding: 12px 10px
}

.mi:hover .drop.mega {
  display: grid
}

.drop .grp {
  grid-column: 1 / -1;
  color: var(--gold-2);
  font-size: .66rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 10px 12px 3px;
  border-top: 1px solid var(--navy-line);
  margin-top: 4px
}

.drop .grp.first {
  border-top: none;
  margin-top: 0;
  padding-top: 2px
}

@media(max-width:600px) {
  .drop.mega {
    min-width: 0;
    grid-template-columns: 1fr
  }
}

/* Dải "flow" 5 bước (Trợ lý thông minh) — mở rộng lên 5 cột, vẫn co theo màn hình */
.flow.five .steps {
  grid-template-columns: repeat(5, 1fr);
  gap: 18px
}

@media(max-width:900px) {
  .flow.five .steps {
    grid-template-columns: 1fr 1fr
  }
}

@media(max-width:560px) {
  .flow.five .steps {
    grid-template-columns: 1fr
  }
}

/* ---------- Mobile nav (hamburger, CSS-only) — dưới 900px ---------- */
@media(max-width:900px) {
  .burger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 0 11px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent
  }

  .burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #eaf0f7;
    border-radius: 2px;
    transition: transform .2s, opacity .2s
  }

  .sp {
    display: none
  }

  .menu {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #0c1e38;
    border-top: 1px solid var(--navy-line);
    padding: 6px 0 16px;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    box-shadow: 0 16px 30px rgba(0, 0, 0, .45)
  }

  #nav-toggle:checked~.menu {
    display: flex
  }

  #nav-toggle:checked~.burger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg)
  }

  #nav-toggle:checked~.burger span:nth-child(2) {
    opacity: 0
  }

  #nav-toggle:checked~.burger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg)
  }

  .menu>a,
  .mi>a {
    display: block;
    padding: 12px 20px;
    font-size: 1rem;
    border-radius: 0
  }

  .mi {
    position: static
  }

  .drop,
  .drop.mega {
    display: block;
    position: static;
    min-width: 0;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    margin: 0
  }

  .drop a {
    padding: 9px 20px 9px 34px;
    font-size: .95rem;
    white-space: normal
  }

  .drop .grp {
    display: block;
    padding: 12px 20px 4px;
    margin: 0;
    border-top: none
  }

  .drop .grp.first {
    padding-top: 8px
  }
}

/* ---------- Footer contact + modal liên hệ (CSS-only) ---------- */
.fcontact {
  margin-top: 16px;
  font-size: .92rem
}

.fcontact a {
  color: #d7e0ec;
  text-decoration: none
}

.fcontact a:hover {
  color: #fff
}

.fcontact span {
  margin: 0 5px;
  color: #55657a
}

.modal-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px
}

#contact-modal:checked~.modal {
  display: flex
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 18, 34, .66)
}

.modal-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  background: var(--white);
  border-radius: 16px;
  padding: 30px 26px 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
  animation: modalpop .18s ease-out
}

@keyframes modalpop {
  from {
    transform: translateY(12px);
    opacity: 0
  }

  to {
    transform: none;
    opacity: 1
  }
}

.modal-card h3 {
  font-size: 1.35rem;
  margin: 2px 0 6px
}

.modal-card .muted {
  margin: 0 0 14px
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  border-radius: 8px
}

.modal-close:hover {
  background: var(--line);
  color: var(--navy)
}

.contact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 12px 15px;
  margin-top: 9px;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
  color: var(--ink)
}

.contact-row:hover {
  border-color: var(--gold);
  background: #fbf7ec
}

.contact-row b {
  color: var(--navy)
}

.contact-row span {
  color: var(--muted);
  font-size: .9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 58%
}

/* ---------- Bảng so sánh Trước / Sau (trang Hiệu quả) ---------- */
.cmp {
  margin-top: 28px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--white)
}

.cmp .row {
  display: grid;
  grid-template-columns: 1fr 1fr
}

.cmp .row+.row {
  border-top: 1px solid var(--line)
}

.cmp .cell {
  padding: 15px 20px;
  font-size: .95rem
}

.cmp .cell.old {
  color: var(--muted);
  border-right: 1px solid var(--line)
}

.cmp .cell.new {
  background: #fbf7ec;
  border-left: 3px solid var(--gold)
}

.cmp .cell.old b {
  color: #55606b
}

.cmp .cell.new b {
  color: var(--navy)
}

.cmp .hd {
  background: var(--navy)
}

.cmp .hd .cell {
  color: #eaf0f7;
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-right-color: var(--navy-line)
}

.cmp .hd .cell.new {
  background: var(--navy-2);
  color: var(--gold-2)
}

.cmp .lbl {
  display: none
}

@media(max-width:640px) {
  .cmp .row {
    grid-template-columns: 1fr
  }

  .cmp .hd {
    display: none
  }

  .cmp .cell.old {
    border-right: none
  }

  .cmp .lbl {
    display: block;
    font-size: .66rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    font-weight: 700;
    margin-bottom: 5px
  }

  .cmp .cell.old .lbl {
    color: var(--muted)
  }

  .cmp .cell.new .lbl {
    color: var(--gold)
  }
}

/* ---------- Khối "trọng tâm" xếp dọc (trang Hiệu quả) ---------- */
.pillar {
  margin-top: 34px;
  padding-top: 32px;
  border-top: 1px solid var(--line)
}

.pillar:first-of-type {
  margin-top: 26px;
  padding-top: 0;
  border-top: none
}

.pillar>.kicker {
  color: var(--gold)
}

.pillar h3 {
  font-size: 1.25rem;
  margin: 2px 0 6px
}

.pillar .muted {
  max-width: 74ch
}