:root {
  --nen: #f4f7fb;
  --the: #ffffff;
  --the-phu: #f8fbff;
  --chu: #13253e;
  --chu-phu: #5a6f8c;
  --vien: #d6deea;
  --chinh: #0d6b63;
  --chinh-2: #10998f;
  --do: #d65043;
  --xanh-nhe: #eaf4ff;
  --xanh-la: #e8f8f4;
}

* {
  box-sizing: border-box;
}

html,
body {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Be Vietnam Pro", sans-serif;
  color: var(--chu);
  line-height: 1.5;
  background:
    radial-gradient(1000px 520px at -5% -10%, #dbe8ff 0%, transparent 58%),
    radial-gradient(900px 420px at 105% 0%, #d7f8f1 0%, transparent 52%),
    var(--nen);
}

a {
  color: inherit;
}

.container {
  width: min(1160px, 92vw);
  margin: 0 auto;
}

.hidden {
  display: none !important;
}

.muted {
  color: var(--chu-phu);
}

.nut {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 11px 18px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  background: linear-gradient(100deg, var(--chinh), var(--chinh-2));
  color: #fff;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, opacity 0.2s ease;
}

.nut:hover {
  transform: translateY(-1px);
}

.nut:active {
  transform: translateY(0);
}

.nut:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.nut.nut-phu {
  background: #fff;
  color: #274362;
  border-color: var(--vien);
}

.nut.nut-do {
  background: linear-gradient(100deg, #e47158, var(--do));
}

.panel {
  background: var(--the);
  border: 1px solid var(--vien);
  border-radius: 16px;
  padding: 16px;
}

.the-con {
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.hang-nho {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
  margin-bottom: 10px;
}

input,
textarea,
select,
button {
  font: inherit;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid #cad6e6;
  border-radius: 11px;
  padding: 10px 12px;
  background: #fff;
  color: var(--chu);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #8da8c8;
  box-shadow: 0 0 0 3px rgba(107, 142, 186, 0.16);
}

textarea,
pre {
  white-space: pre-wrap;
}

button {
  border: none;
}

.trang-thai {
  margin: 12px 0 0;
  color: var(--chu-phu);
  font-size: 0.92rem;
}

.chan-trang {
  color: #647c99;
  font-size: 0.9rem;
  margin-top: 14px;
  padding-bottom: 24px;
}

.luu-y {
  border: 1px solid #f0d3b0;
  background: #fff6eb;
  border-radius: 12px;
  padding: 10px;
  color: #8b5724;
  font-size: 0.9rem;
}

.huong-dan-noi-bat {
  position: relative;
  z-index: 1001;
  box-shadow: 0 0 0 4px rgba(16, 153, 143, 0.35);
  border-radius: 12px;
}

.guide-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 17, 32, 0.62);
  z-index: 1100;
  display: grid;
  place-items: center;
  padding: 12px;
}

.guide-card {
  width: min(540px, 96vw);
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--vien);
  padding: 15px;
}

.trang-landing {
  padding-bottom: 34px;
}

.dau-trang {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0;
}

.logo {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}

.hero-moi {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  align-items: start;
  background:
    linear-gradient(145deg, rgba(10, 29, 56, 0.98), rgba(8, 67, 86, 0.95)),
    #0f1f36;
  border: 1px solid #1f3f65;
  color: #eaf5ff;
}

.hero-noi-dung h1 {
  font-size: clamp(2rem, 5vw, 3.45rem);
  line-height: 1.08;
  margin: 6px 0 12px;
  color: #fff;
}

.hero-noi-dung p {
  color: #cbddf2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #dcfff8 !important;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  margin: 0;
}

.hero-phu {
  margin: 12px 0 0;
  font-size: 0.92rem;
  color: #9dc4df !important;
}

.thu-goi-y {
  border: 1px solid rgba(169, 206, 237, 0.33);
  border-radius: 14px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.06);
}

.thu-goi-y p {
  color: #d9e9fa;
}

.van-de {
  margin-top: 16px;
}

.van-de h2 {
  margin: 0 0 10px;
}

.van-de-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.van-de-list article {
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.van-de-list strong {
  display: block;
  margin-bottom: 4px;
}

.so-lieu-lon {
  margin: 20px 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.so-card {
  background: #fff;
  border: 1px solid var(--vien);
  border-radius: 13px;
  padding: 14px;
}

.so-card .so {
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  font-weight: 800;
  color: #0d466d;
}

.so-card .mo-ta {
  margin-top: 5px;
  color: var(--chu-phu);
  font-size: 0.92rem;
}

.giai-phap {
  margin: 12px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.giai-phap .muc {
  border: 1px solid var(--vien);
  border-radius: 13px;
  padding: 14px;
  background: #fff;
}

.giai-phap h3 {
  margin: 0 0 6px;
  color: #123154;
}

.giai-phap p {
  margin: 0;
  color: #4f6785;
}

.so-thu-tu {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #0e7f77 !important;
}

.lo-trinh {
  margin-top: 14px;
}

.lo-trinh h2 {
  margin: 0 0 10px;
}

.lo-trinh-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.lo-trinh-list article {
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  background: var(--xanh-la);
  color: #0d5f59;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.khoi-cta {
  margin: 18px 0;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid #d2deec;
  background:
    linear-gradient(140deg, rgba(229, 245, 255, 0.96), rgba(232, 255, 247, 0.96)),
    #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.khoi-cta-lon {
  border-color: #bfd4ea;
}

.faq h2 {
  margin: 0 0 10px;
}

.faq details {
  border: 1px solid var(--vien);
  background: #fff;
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 9px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
}

.trang-guide {
  padding-bottom: 30px;
}

.guide-hero {
  display: grid;
  grid-template-columns: 1.18fr 1fr;
  gap: 14px;
  align-items: start;
  background:
    linear-gradient(145deg, rgba(11, 33, 63, 0.98), rgba(10, 79, 90, 0.94)),
    #10233d;
  border-color: #1f4065;
}

.guide-hero h1 {
  margin: 8px 0 10px;
  color: #fff;
  font-size: clamp(1.9rem, 4.8vw, 3rem);
  line-height: 1.12;
}

.guide-hero .muted {
  color: #c8dbf1;
}

.guide-thong-so {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.guide-thong-so .so-card {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(215, 233, 252, 0.35);
}

.guide-thong-so .so-card .so {
  color: #fff;
}

.guide-thong-so .so-card .mo-ta {
  color: #d6e7fa;
}

.guide-cap {
  display: none;
}

.guide-cap.active {
  display: block;
}

.guide-khoi {
  margin-top: 12px;
}

.guide-khoi:first-child {
  margin-top: 0;
}

.trang-app {
  padding: 16px 0 30px;
}

.trang-app .panel {
  border-radius: 13px;
  padding: 14px;
}

.trang-app .the-con,
.trang-app .ket-qua {
  background: #fff;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.topbar h1 {
  margin: 6px 0 0;
  font-size: clamp(1.55rem, 3.8vw, 2.2rem);
}

.lien-ket-ve {
  font-size: 0.95rem;
  color: #2d5277;
  text-decoration: none;
}

.auth-bo-cuc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.khung-buoc {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin-top: 10px;
}

.buoc {
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 10px;
  background: var(--the-phu);
}

.buoc .so-buoc {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--xanh-nhe);
  color: #0f4e7c;
  font-weight: 800;
  margin-bottom: 8px;
}

.menu-cong-cu {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.menu-cong-cu .nut-cong-cu {
  border-radius: 999px;
  border: 1px solid var(--vien);
  padding: 9px 12px;
  font-weight: 700;
  background: #f1f6fc;
  color: #274564;
  cursor: pointer;
  white-space: nowrap;
}

.menu-cong-cu .nut-cong-cu.active {
  background: linear-gradient(100deg, var(--chinh), var(--chinh-2));
  color: #fff;
  border-color: transparent;
}

.panel-cong-cu {
  margin-top: 10px;
  display: none;
}

.panel-cong-cu.active {
  display: block;
}

.bo-cuc-2cot {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: 12px;
}

.ket-qua {
  border: 1px solid var(--vien);
  border-radius: 12px;
  padding: 12px;
  background: var(--the-phu);
}

.ket-qua h3,
.ket-qua h4 {
  margin-top: 0;
}

.diem-noi-bat {
  color: #0d6f67;
  font-size: 1.04rem;
  font-weight: 700;
}

.chat-box {
  border: 1px solid var(--vien);
  border-radius: 12px;
  background: #f8fbff;
  min-height: 250px;
  max-height: 390px;
  overflow-y: auto;
  padding: 10px;
  display: grid;
  gap: 8px;
}

.msg {
  padding: 9px 11px;
  border-radius: 12px;
  max-width: min(88%, 640px);
  line-height: 1.45;
  word-break: break-word;
}

.msg.student {
  justify-self: end;
  background: #dbeffd;
  border: 1px solid #c6e3f8;
}

.msg.ai {
  justify-self: start;
  background: #e8f8ef;
  border: 1px solid #d0eadb;
}

.form-ngang {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-top: 8px;
}

.bang {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  display: block;
  overflow-x: auto;
}

.bang th,
.bang td {
  border: 1px solid var(--vien);
  padding: 8px;
  text-align: left;
  white-space: nowrap;
}

.bang th {
  background: #ebf3fc;
}

@media (max-width: 1120px) {
  .so-lieu-lon {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 940px) {
  .hero-moi,
  .guide-hero,
  .auth-bo-cuc,
  .khung-buoc,
  .bo-cuc-2cot,
  .van-de-list,
  .giai-phap,
  .lo-trinh-list {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .khoi-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .container {
    width: 94vw;
  }

  .panel {
    border-radius: 14px;
    padding: 13px;
  }

  .dau-trang {
    flex-direction: column;
    align-items: stretch;
    padding-top: 14px;
  }

  .logo {
    font-size: 1.06rem;
  }

  .hero-noi-dung h1 {
    font-size: clamp(1.68rem, 8vw, 2.2rem);
  }

  .guide-hero h1 {
    font-size: clamp(1.58rem, 7.2vw, 2.05rem);
  }

  .hero-noi-dung p,
  .hero-phu {
    font-size: 0.95rem;
  }

  .so-lieu-lon {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .menu-cong-cu {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .menu-cong-cu .nut-cong-cu {
    flex: 0 0 auto;
  }

  .form-ngang {
    grid-template-columns: 1fr;
  }

  .form-ngang .nut {
    width: 100%;
  }

  .chat-box {
    min-height: 210px;
    max-height: 330px;
  }

  .msg {
    max-width: 94%;
    font-size: 0.95rem;
  }

  .hang-nho .nut {
    width: 100%;
  }

  .guide-card {
    width: 96vw;
  }
}

/* ===== Landing Neo ===== */
.landing-neo {
  background:
    radial-gradient(1400px 580px at 50% -12%, rgba(95, 255, 211, 0.16), transparent 62%),
    radial-gradient(1000px 420px at 50% 110%, rgba(116, 184, 255, 0.14), transparent 64%),
    #050b14;
  color: #dce8f7;
  min-height: 100vh;
}

.landing-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(5, 11, 20, 0.6);
}

.landing-nav .logo {
  color: #fff;
}

.neo-hero {
  position: relative;
  overflow: hidden;
  padding: 42px 0 58px;
}

.neo-texture {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 11, 20, 0.6), rgba(4, 11, 20, 0.85)),
    repeating-linear-gradient(
      115deg,
      rgba(255, 255, 255, 0.035) 0px,
      rgba(255, 255, 255, 0.035) 2px,
      transparent 2px,
      transparent 12px
    ),
    radial-gradient(circle at 16% 20%, rgba(99, 234, 196, 0.22), transparent 34%),
    radial-gradient(circle at 85% 22%, rgba(80, 166, 255, 0.21), transparent 32%),
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.08), transparent 44%);
  pointer-events: none;
}

.neo-hero-content {
  position: relative;
  z-index: 1;
  max-width: 920px;
  text-align: center;
}

.neo-kicker {
  margin: 0;
  font-size: 0.83rem;
  letter-spacing: 0.09em;
  font-weight: 700;
  color: #8bd8c9;
}

.neo-hero h1 {
  margin: 10px auto 10px;
  font-size: clamp(2rem, 6.7vw, 5.2rem);
  line-height: 0.98;
  font-weight: 800;
  color: #fff;
  text-wrap: balance;
  max-width: 980px;
}

.neo-hero h1 span {
  display: block;
  font-size: clamp(1.05rem, 2.8vw, 1.85rem);
  line-height: 1.25;
  color: #b9d8f7;
  margin-top: 14px;
  font-weight: 600;
}

.neo-sub {
  max-width: 860px;
  margin: 0 auto 16px;
  color: #c9d9ec;
  font-size: 1.05rem;
}

.neo-hero .hang-nho {
  justify-content: center;
}

.neo-trust {
  margin: 10px 0 0;
  color: #9eb8d5;
  font-size: 0.92rem;
}

.neo-letter-wrap {
  position: relative;
  margin-top: -14px;
  padding: 0 0 24px;
}

.neo-letter {
  max-width: 850px;
  color: #e0ebf7;
  font-size: clamp(1.02rem, 2.2vw, 1.25rem);
  line-height: 1.6;
}

.neo-letter p {
  margin: 0 0 10px;
}

.neo-highlight {
  font-weight: 700;
  color: #a6ecd9;
}

.neo-pain {
  padding: 28px 0 34px;
  background:
    radial-gradient(1200px 480px at 50% -20%, rgba(83, 214, 179, 0.14), transparent 62%),
    #071221;
  border-top: 1px solid rgba(162, 217, 255, 0.11);
  border-bottom: 1px solid rgba(162, 217, 255, 0.11);
}

.neo-pain h2,
.neo-dark-band h2,
.neo-metric h2,
.neo-flow h2 {
  margin: 8px 0 14px;
  color: #fff;
  font-size: clamp(1.5rem, 3.6vw, 2.6rem);
  line-height: 1.15;
  text-wrap: balance;
}

.neo-pain-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.neo-pain-list article {
  background: linear-gradient(180deg, rgba(8, 23, 38, 0.8), rgba(8, 19, 33, 0.74));
  border: 1px solid rgba(148, 187, 225, 0.2);
  border-radius: 12px;
  padding: 12px;
}

.neo-pain-list span {
  display: inline-flex;
  font-size: 0.82rem;
  font-weight: 800;
  color: #73d6bf;
  letter-spacing: 0.08em;
}

.neo-pain-list h3 {
  margin: 5px 0;
  color: #eff6ff;
  font-size: 1.07rem;
}

.neo-pain-list p {
  margin: 0;
  color: #b8cbe0;
}

.neo-dark-band {
  padding: 34px 0;
  background:
    linear-gradient(180deg, #061523, #081f1e),
    #071720;
}

.neo-solution-list {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.neo-solution-list article {
  border-left: 3px solid #69d6ba;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.04);
}

.neo-solution-list h3 {
  margin: 0 0 5px;
  color: #e9f6ff;
}

.neo-solution-list p {
  margin: 0;
  color: #b8cbdf;
}

.neo-metric {
  padding: 34px 0;
  background:
    radial-gradient(1200px 500px at 50% 0%, rgba(90, 185, 255, 0.16), transparent 63%),
    #07111d;
}

.neo-impact .so-card,
.neo-real .so-card {
  background: linear-gradient(180deg, rgba(9, 22, 36, 0.78), rgba(8, 19, 31, 0.68));
  border: 1px solid rgba(151, 194, 234, 0.2);
  box-shadow: none;
}

.neo-impact .so,
.neo-real .so {
  color: #f3fbff;
}

.neo-impact .mo-ta,
.neo-real .mo-ta {
  color: #b3c8dd;
}

.neo-flow {
  padding: 30px 0;
  text-align: center;
  background: #060e18;
}

.neo-flow-steps {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.neo-flow-steps article {
  border-top: 1px solid rgba(149, 189, 224, 0.35);
  padding-top: 9px;
  color: #d6e6f8;
}

.neo-flow-steps strong {
  color: #7adfc7;
  margin-right: 5px;
}

.neo-faq {
  margin-top: 18px;
  background: #0d1a2b;
  border-color: rgba(151, 192, 228, 0.24);
}

.neo-faq h2 {
  color: #fff;
}

.neo-faq details {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(151, 192, 228, 0.2);
}

.neo-faq summary {
  color: #e5f1ff;
}

.neo-faq p {
  color: #b7cade;
}

.landing-neo .chan-trang {
  color: #97abc2;
  padding-top: 12px;
}

@media (max-width: 1100px) {
  .neo-solution-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .neo-flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .landing-nav {
    position: static;
    padding-top: 14px;
  }

  .neo-hero {
    padding-top: 26px;
    padding-bottom: 34px;
  }

  .neo-sub {
    font-size: 0.96rem;
  }

  .neo-pain-list,
  .neo-solution-list,
  .neo-flow-steps {
    grid-template-columns: 1fr;
  }

  .neo-letter {
    font-size: 1rem;
  }
}

/* ===== Guide Pages (Multi-Subpages) ===== */
.guide-pro {
  min-height: 100vh;
  color: #dce8f7;
  background:
    radial-gradient(1200px 520px at 50% -10%, rgba(93, 214, 184, 0.2), transparent 64%),
    radial-gradient(1000px 420px at 50% 105%, rgba(111, 177, 255, 0.16), transparent 62%),
    #06111d;
}

.guide-top {
  border-bottom: 1px solid rgba(152, 193, 228, 0.18);
  background: rgba(6, 15, 27, 0.72);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.guide-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
}

.guide-top .logo {
  color: #fff;
  text-decoration: none;
}

.guide-hub-hero {
  position: relative;
  overflow: hidden;
  padding: 30px 0 34px;
}

.guide-hub-texture {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 11, 20, 0.55), rgba(4, 11, 20, 0.8)),
    repeating-linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.03) 0px,
      rgba(255, 255, 255, 0.03) 2px,
      transparent 2px,
      transparent 12px
    );
  pointer-events: none;
}

.guide-hub-hero .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.guide-hub-hero h1 {
  margin: 8px auto 10px;
  color: #fff;
  font-size: clamp(1.8rem, 4.8vw, 3.4rem);
  line-height: 1.08;
  max-width: 920px;
  text-wrap: balance;
}

.guide-hub-hero p {
  color: #bfd2e9;
  max-width: 760px;
  margin: 0 auto;
}

.guide-hub-grid {
  padding: 8px 0 2px;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-link-card {
  text-decoration: none;
  border: 1px solid rgba(151, 192, 228, 0.25);
  border-radius: 14px;
  padding: 14px;
  background: linear-gradient(160deg, rgba(9, 22, 38, 0.84), rgba(8, 19, 32, 0.72));
  transition: transform 0.16s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.guide-link-card:hover {
  transform: translateY(-2px);
  border-color: rgba(123, 230, 198, 0.6);
  box-shadow: 0 12px 26px rgba(8, 28, 48, 0.28);
}

.guide-link-card span {
  display: inline-flex;
  font-size: 0.78rem;
  color: #8adcc8;
  font-weight: 700;
  letter-spacing: 0.07em;
  margin-bottom: 4px;
}

.guide-link-card h3 {
  margin: 0 0 6px;
  color: #f0f7ff;
}

.guide-link-card p {
  margin: 0;
  color: #b7cade;
}

.guide-mini-cta {
  margin-top: 14px;
  background: #0d1a2b;
  border-color: rgba(151, 192, 228, 0.25);
}

.guide-mini-cta h2 {
  margin: 0 0 6px;
  color: #fff;
}

.guide-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 12px;
  padding-top: 18px;
}

.guide-side {
  height: fit-content;
  position: sticky;
  top: 82px;
  background: #0d1a2b;
  border-color: rgba(151, 192, 228, 0.2);
}

.guide-side a {
  display: block;
  padding: 10px;
  border-radius: 9px;
  text-decoration: none;
  color: #bfd1e6;
  border: 1px solid transparent;
}

.guide-side a + a {
  margin-top: 4px;
}

.guide-side a:hover {
  border-color: rgba(136, 218, 194, 0.4);
  color: #eaf7ff;
}

.guide-side a.active {
  background: rgba(120, 219, 193, 0.14);
  color: #eafff8;
  border-color: rgba(120, 219, 193, 0.5);
}

.guide-content {
  background: #0d1a2b;
  border-color: rgba(151, 192, 228, 0.24);
}

.guide-content h1 {
  margin: 8px 0;
  color: #fff;
  font-size: clamp(1.5rem, 3.3vw, 2.3rem);
  line-height: 1.15;
}

.guide-step-list {
  display: grid;
  gap: 10px;
}

.guide-step-list article {
  border: 1px solid rgba(151, 192, 228, 0.2);
  border-radius: 12px;
  padding: 11px;
  background: rgba(255, 255, 255, 0.03);
}

.guide-step-list h3 {
  margin: 0 0 7px;
  color: #ecf6ff;
}

.guide-step-list ul,
.guide-step-list ol {
  margin: 0;
  padding-left: 18px;
  color: #b7cade;
}

.guide-note {
  margin-top: 10px;
  border-left: 3px solid #7adfc7;
  background: rgba(110, 223, 194, 0.08);
  padding: 10px 10px 10px 11px;
  border-radius: 8px;
}

.guide-note h3 {
  margin: 0 0 7px;
  color: #edfff8;
}

.guide-note ul,
.guide-note ol {
  margin: 0;
  padding-left: 18px;
  color: #c4d8ed;
}

.guide-chip {
  margin: 0;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 10px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #96e5d1;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.guide-pro .chan-trang {
  color: #9db1c9;
}

@media (max-width: 1020px) {
  .guide-hub-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-layout {
    grid-template-columns: 1fr;
  }

  .guide-side {
    position: static;
  }
}

@media (max-width: 720px) {
  .guide-hub-grid {
    grid-template-columns: 1fr;
  }

  .guide-top {
    position: static;
  }

  .guide-top-row {
    align-items: stretch;
    flex-direction: column;
  }

  .guide-side {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
  }

  .guide-side a {
    margin: 0 !important;
    padding: 8px;
    font-size: 0.9rem;
  }
}