/* ============================================================================
   Powerful Spring — Site styles (Teal/emerald + amber: spring luxury)
   Accent teal #0e7a63 / emerald #2dd4a8 · deep #07211c · gold-amber #d4a017
   Font: Sora (tiêu đề) + Inter (nội dung).
   ============================================================================ */
:root {
  --bg: #f4f6f9;
  --bg-white: #ffffff;
  --bg-soft: #eef2f7;
  --navy: #0f2e2b;         /* teal-deep hero/footer */
  --navy-2: #143d38;
  --navy-3: #1a5248;
  --deep: #07211c;         /* rất tối teal */
  --deep-2: #0b2f27;
  --ink: #0f2e2b;
  --ink-2: #4a635d;
  --ink-3: #6b8a82;
  --line: #dde4ec;
  --line-2: #c5d0dd;
  --gold: #d4a017;
  --gold-dark: #a87a0a;
  --gold-soft: #e8c24a;
  --gold-ink: #7a5c0a;
  --violet: #2dd4a8;       /* emerald thay violet cho Powerful Spring */
  --violet-soft: rgba(45, 212, 168, .30);
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(7, 33, 28, .08);
  --shadow-md: 0 4px 16px rgba(7, 33, 28, .14);
  --shadow-lg: 0 24px 64px rgba(7, 33, 28, .28);
  --ease: cubic-bezier(.25, .1, .25, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-sheet: cubic-bezier(.32, .72, 0, 1);
  --max: 1440px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Sora", "Inter", -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
/* Bàn phím phải thấy được vị trí focus — trước đây bị mất hoàn toàn. */
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
::selection { background: rgba(212, 160, 23, .22); }
h1, h2, h3 { margin: 0 0 .5em; font-family: var(--font-display); font-weight: 600; letter-spacing: -.025em; line-height: 1.08; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 880px; margin-left: 0; }
@media (min-width: 640px) { .container { padding: 0 32px; } }
@media (min-width: 1024px) { .container { padding: 0 48px; } }

/* ============================================================================
   BUTTONS — pill, hiệu ứng "text roll" khi hover
   ============================================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  border: 0; cursor: pointer; white-space: nowrap;
  font-family: inherit; font-size: 13px; font-weight: 500;
  border-radius: 999px; padding: 8px 8px 8px 20px;
  transition: background .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
@media (min-width: 640px) { .btn { font-size: 14px; padding-left: 24px; } }

/* khối chữ cuộn: 2 bản chữ xếp dọc, hover đẩy lên 50% */
.btn-roll { display: block; overflow: hidden; height: 20px; }
.btn-roll > span { display: flex; flex-direction: column; transition: transform .5s var(--ease); }
.btn-roll i { font-style: normal; display: block; height: 20px; line-height: 20px; }
.btn:hover .btn-roll > span { transform: translateY(-50%); }

/* vòng tròn mũi tên, hover quay -45deg */
.btn-arrow {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 28px; height: 28px; border-radius: 999px;
  transition: transform .5s var(--ease), background .3s var(--ease);
}
.btn:hover .btn-arrow { transform: rotate(-45deg); }
.btn-arrow svg { width: 14px; height: 14px; }
@media (min-width: 640px) { .btn-arrow { width: 32px; height: 32px; } }

/* Nút chính: nền gold + chữ navy (gold với chữ trắng chỉ đạt ~2.3:1, không đọc được). */
.btn-primary {
  background: linear-gradient(135deg, var(--gold-soft) 0%, var(--gold) 55%, var(--gold-dark) 100%);
  color: var(--navy); font-weight: 600;
  box-shadow: 0 8px 24px rgba(212, 160, 23, .35), inset 0 1px 0 rgba(255, 255, 255, .4);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%); color: #fff; box-shadow: 0 12px 32px rgba(212, 160, 23, .45); }
.btn-primary .btn-arrow { background: var(--navy); color: var(--gold); }

.btn-dark { background: var(--ink); color: #fff; padding-left: 20px; }
.btn-dark:hover { background: #000; }
.btn-dark .btn-arrow { background: #fff; color: var(--ink); width: 24px; height: 24px; }

.btn-outline {
  background: transparent; color: var(--ink);
  border: 1px solid var(--line-2); padding: 10px 22px;
}
/* nút không có mũi tên vẫn cao bằng nút có mũi tên (28/32px + padding) */
.btn-outline, .btn-quiet, .btn-white { min-height: 44px; justify-content: center; }
.btn-outline:hover { border-color: var(--ink); }

.btn-white { background: #fff; color: var(--ink); padding: 12px 26px; box-shadow: var(--shadow-sm); }
.btn-white:hover { box-shadow: var(--shadow-md); }

/* nút phụ: nền kính mờ tối, dùng cạnh nút gold trong hero navy */
.btn-quiet {
  background: rgba(255, 255, 255, .1); color: #fff;
  border: 1px solid rgba(255, 255, 255, .26); padding: 10px 20px;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.btn-quiet:hover { background: rgba(255, 255, 255, .18); border-color: rgba(255, 255, 255, .5); }

.btn-block { width: 100%; justify-content: center; padding-left: 20px; padding-right: 20px; }
.btn-ghost { background: none; color: var(--ink-2); padding: 8px 0; }
.btn-ghost:hover { color: var(--gold-ink); }

/* ============================================================================
   NAV — thanh pill trắng nổi trên hero
   ============================================================================ */
.nav { position: absolute; top: 0; left: 0; right: 0; z-index: 30; padding: 8px; }
@media (min-width: 640px) { .nav { padding: 12px; } }
.nav-inner {
  max-width: var(--max); margin: 0 auto;
  display: flex; align-items: center; gap: 16px;
  background: #fff; border-radius: 999px; padding: 5px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .04);
}
/* khi cuộn: nav dính lên đầu trang */
.nav.nav-scrolled { position: fixed; }
.nav.nav-scrolled .nav-inner { box-shadow: 0 6px 24px rgba(0, 0, 0, .1); }

.logo { display: flex; align-items: center; gap: 10px; flex: none; }
.logo-mark { width: 36px; height: 36px; border-radius: 12px; overflow: hidden; background: none; }
.logo-mark svg { width: 100%; height: 100%; display: block; }
@media (min-width: 640px) { .logo-mark { width: 40px; height: 40px; } }
.logo-img { height: 30px; width: auto; }
.logo-text { font-size: 17px; font-weight: 600; letter-spacing: -.02em; display: inline-flex; flex-direction: column; line-height: 1.1; }
.logo-text small { font-size: 8.5px; font-weight: 500; letter-spacing: .18em; color: var(--gold-ink); }

.nav-links { display: none; }
@media (min-width: 768px) {
  .nav-links { display: flex; align-items: center; gap: 24px; margin-left: 6px; }
}
.nav-links > a, .nav-drop-trigger { font-size: 14px; color: var(--ink); transition: color .3s var(--ease); }
.nav-links > a:hover, .nav-dropdown:hover .nav-drop-trigger { color: var(--ink-3); }

.nav-dropdown { position: relative; }
.nav-drop-trigger { display: inline-flex; align-items: center; gap: 4px; cursor: pointer; }
.nav-drop-trigger svg { width: 14px; height: 14px; transition: transform .3s var(--ease); }
.nav-dropdown:hover .nav-drop-trigger svg { transform: rotate(180deg); }
.nav-drop-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(6px);
  margin-top: 14px; width: 330px; padding: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .12);
  opacity: 0; visibility: hidden;
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}
.nav-dropdown:hover .nav-drop-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-drop-menu::before { content: ""; position: absolute; top: -16px; left: 0; right: 0; height: 16px; }
.nav-drop-menu a { display: block; padding: 10px 12px; border-radius: 10px; transition: background .2s var(--ease); }
.nav-drop-menu a:hover { background: var(--bg-soft); }
.nav-drop-menu strong { display: block; font-size: 14px; font-weight: 500; color: var(--ink); }
.nav-drop-menu span { display: block; font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.nav-drop-menu a:hover strong { color: var(--gold-ink); }

.nav-meta { display: none; margin-left: auto; align-items: center; gap: 18px; }
@media (min-width: 768px) { .nav-meta { display: flex; } }
.nav-avail { display: none; font-size: 13px; color: var(--ink-2); }
@media (min-width: 1024px) { .nav-avail { display: block; } }
.nav-clock { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--ink-2); }
.nav-clock svg { width: 14px; height: 14px; }
.nav-cta { display: none; }
@media (min-width: 768px) { .nav-cta { display: flex; } }

.nav-toggle {
  margin-left: auto; display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border: 0; border-radius: 999px;
  background: var(--ink); color: #fff; cursor: pointer;
}
@media (min-width: 768px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 18px; height: 18px; }
.nav-toggle .icon-x { display: none; }
body.nav-open .nav-toggle .icon-x { display: block; }
body.nav-open .nav-toggle .icon-menu { display: none; }

/* ---- mobile bottom sheet ---- */
.mobile-menu {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column; justify-content: flex-end;
  background: rgba(0, 0, 0, .6);
  opacity: 0; visibility: hidden;
  transition: opacity .5s var(--ease-sheet), visibility .5s;
}
body.nav-open { overflow: hidden; }
body.nav-open .mobile-menu { opacity: 1; visibility: visible; }
.mobile-sheet {
  background: #fff; border-radius: var(--radius-xl);
  margin: 0 12px 12px; padding: 22px 20px 26px;
  transform: translateY(100%);
  transition: transform .5s var(--ease-sheet);
}
body.nav-open .mobile-sheet { transform: translateY(0); }
.mobile-time {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px;
  margin-bottom: 18px;
}
.mobile-time svg { width: 13px; height: 13px; }
.mobile-link {
  display: block; font-size: 28px; font-weight: 500; letter-spacing: -.02em;
  padding: 8px 0; color: var(--ink);
}
@media (min-width: 400px) { .mobile-link { font-size: 32px; } }
.mobile-sheet .btn { margin-top: 20px; }

/* ============================================================================
   HERO — ảnh nền AI cinematic + gradient mesh + aurora violet
   ============================================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column;
  overflow: hidden; isolation: isolate;
  background: var(--deep);
  color: #fff;
}
/* Ảnh nền cinematic — phủ kín hero, làm nền mờ ảo */
.hero-media { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .52; }
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 33, 28, .45) 0%, rgba(7, 33, 28, .18) 42%, rgba(7, 33, 28, .72) 100%),
    radial-gradient(900px 600px at 82% 18%, rgba(212, 160, 23, .28), transparent 62%),
    radial-gradient(800px 520px at 12% 82%, rgba(45, 212, 168, .22), transparent 60%);
}
/* Aurora violet lơ lửng — hiệu ứng AI */
.hero-aurora {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(700px 420px at 55% 0%, rgba(45, 212, 168, .18), transparent 68%);
  animation: aurora 12s ease-in-out infinite alternate;
}
@keyframes aurora { 0% { opacity: .9; transform: translateX(-3%); } 100% { opacity: .55; transform: translateX(3%); } }
/* Trình duyệt cũ không hiểu svh → dùng vh làm nền trước. */
@supports not (height: 100svh) { .hero { min-height: 100vh; } }
/* Màn hình thấp (điện thoại nằm ngang, laptop 13"): bám nội dung thay vì ép
   full-height rồi thừa khoảng trắng. */
@media (max-height: 700px) and (min-width: 1024px) { .hero { min-height: 0; } }

/* hero grid/shade — xem .hero-media/.hero-shade/.hero-aurora ở trên */

.hero-inner {
  position: relative; z-index: 2;
  flex: 1 1 auto;
  display: grid; align-items: center;
  width: 100%; max-width: var(--max); margin: 0 auto;
  padding: 112px 20px 40px;
}
@media (min-width: 640px) { .hero-inner { padding: 128px 32px 48px; } }
/* Desktop: chữ trái, thẻ "what we run" phải — trước đây nửa phải màn hình
   hoàn toàn trống, hero trông như trang chưa tải xong. */
@media (min-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr);
    gap: 56px; padding: 140px 48px 56px;
  }
}
@media (min-width: 1280px) { .hero-inner { gap: 72px; } }

/* Không bó cả khối — chỉ giới hạn riêng tiêu đề và đoạn mô tả, nếu không
   ch-width của khối sẽ ép tiêu đề vỡ mỗi dòng một từ. */
.hero-copy { width: 100%; min-width: 0; }

.hero-label {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; font-weight: 500; letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold-soft); margin: 0 0 18px;
}
@media (min-width: 640px) { .hero-label { font-size: 13px; margin-bottom: 22px; } }
.hero-dot {
  width: 7px; height: 7px; border-radius: 999px; background: var(--gold); flex: none;
  box-shadow: 0 0 0 4px rgba(212, 160, 23, .22);
}

.hero-title {
  font-size: clamp(2.05rem, 8.4vw, 2.75rem);
  font-weight: 500; line-height: 1.06; letter-spacing: -.035em;
  color: #fff; margin: 0; max-width: 15ch; text-wrap: balance;
}
@media (min-width: 640px) { .hero-title { font-size: clamp(2.75rem, 6.2vw, 4rem); max-width: 16ch; } }
@media (min-width: 1024px) { .hero-title { font-size: clamp(2.9rem, 3.9vw, 3.9rem); max-width: none; } }

.hero-sub {
  font-size: 15px; line-height: 1.65; color: rgba(255, 255, 255, .78);
  max-width: 54ch; margin: 20px 0 0;
}
@media (min-width: 640px) { .hero-sub { font-size: 16.5px; margin-top: 24px; } }
@media (min-width: 1024px) { .hero-sub { font-size: 17.5px; } }

.hero-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 30px; }
@media (min-width: 640px) { .hero-cta { gap: 16px; margin-top: 38px; } }
.hero-note { margin: 20px 0 0; font-size: 13px; color: rgba(255, 255, 255, .55); }

/* Thẻ kính bên phải hero — 3 mảng kinh doanh, có link sang trang chi tiết.
   Trên mobile nằm dưới phần chữ; từ 1024px chiếm cột phải.
   Nền hero là navy nên panel dùng kính TỐI, không phải kính trắng. */
.hero-panel {
  position: relative; z-index: 2;
  margin-top: 36px; padding: 8px;
  border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, .07);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, .28);
}
@media (min-width: 1024px) { .hero-panel { margin-top: 0; justify-self: end; width: 100%; max-width: 400px; } }
.hero-panel-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 14px 14px;
  font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
}
.hero-panel-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 14px; border-radius: var(--radius-lg);
  transition: background .3s var(--ease);
}
.hero-panel-item:hover { background: rgba(255, 255, 255, .12); }
.hero-panel-item + .hero-panel-item { box-shadow: 0 -1px 0 rgba(255, 255, 255, .1); }
.hero-panel-num {
  flex: none; width: 26px; height: 26px; border-radius: 999px;
  background: var(--gold); color: var(--navy);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
}
.hero-panel-item strong { display: block; font-size: 15px; font-weight: 600; letter-spacing: -.01em; color: #fff; }
.hero-panel-text { min-width: 0; }
.hero-panel-item span span { display: block; font-size: 13px; color: rgba(255, 255, 255, .6); margin-top: 3px; line-height: 1.5; }
.hero-panel-item svg { flex: none; width: 15px; height: 15px; margin: 5px 0 0 auto; color: rgba(255, 255, 255, .55); transition: transform .3s var(--ease), color .3s var(--ease); }
.hero-panel-item:hover svg { transform: translateX(3px); color: var(--gold-soft); }

/* ============================================================================
   SECTION chung + badge row có số thứ tự
   ============================================================================ */
.section { padding: 64px 0; background: var(--bg-white); }
@media (min-width: 640px) { .section { padding: 80px 0; } }
@media (min-width: 1024px) { .section { padding: 112px 0; } }
.section-alt { background: var(--bg-soft); }

.badge-row { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
@media (min-width: 640px) { .badge-row { margin-bottom: 32px; } }
.badge-num {
  width: 24px; height: 24px; border-radius: 999px; flex: none;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
}
@media (min-width: 640px) { .badge-num { width: 28px; height: 28px; font-size: 12px; } }
.badge-pill {
  font-size: 12px; font-weight: 500; color: var(--ink);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
@media (min-width: 640px) { .badge-pill { font-size: 13px; padding: 6px 16px; } }
.section-alt .badge-pill { border-color: var(--line-2); }

.section-title {
  font-size: clamp(1.5rem, 4vw, 3.2rem);
  font-weight: 500; line-height: 1.12; letter-spacing: -.02em;
  color: var(--ink); margin: 0 0 48px;
}
@media (min-width: 640px) { .section-title { margin-bottom: 64px; } }
@media (min-width: 1024px) { .section-title { margin-bottom: 112px; } }

.section-title-lg {
  font-size: clamp(1.75rem, 7vw, 4.2rem);
  font-weight: 500; line-height: 1.08; letter-spacing: -.03em;
  color: var(--ink); margin: 0 0 40px;
}
@media (min-width: 640px) { .section-title-lg { font-size: clamp(2.5rem, 5vw, 4.2rem); margin-bottom: 56px; } }
@media (min-width: 1024px) { .section-title-lg { margin-bottom: 64px; } }

/* section-head cho các khối features/formats/faq… */
.section-head { max-width: 760px; margin: 0 0 48px; }
.section-head h2 {
  font-size: clamp(1.5rem, 4vw, 3.2rem);
  font-weight: 500; line-height: 1.12; letter-spacing: -.02em; margin: 0 0 14px;
}
.section-head p { font-size: 15px; color: var(--ink-2); margin: 0; }
@media (min-width: 640px) { .section-head p { font-size: 16px; } }

/* ============================================================================
   ABOUT — mobile: chữ trên, 2 ảnh dưới. Desktop: chữ | ảnh nhỏ | ảnh lớn.
   Một khối markup duy nhất, chỉ đổi vị trí grid — không nhân đôi DOM.
   ============================================================================ */
.about-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 640px) {
  .about-grid { grid-template-columns: 45fr 55fr; gap: 20px; }
  .about-copy { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  /* Chia theo fr để cột chữ không bị 2 cột ảnh (đặt theo %) bóp còn 3-4 từ
     một dòng — đây là lỗi cũ ở bản trước. */
  .about-grid {
    grid-template-columns: 36fr 26fr 38fr;
    align-items: end; gap: 32px;
  }
  .about-copy { grid-column: auto; }
}
@media (min-width: 1280px) { .about-grid { gap: 40px; } }
.about-text {
  font-size: 15px; font-weight: 500; line-height: 1.6; color: var(--ink);
  margin: 0 0 24px; max-width: 48ch;
}
@media (min-width: 640px) { .about-text { font-size: 17px; } }
@media (min-width: 1024px) { .about-text { font-size: 16px; line-height: 1.7; max-width: none; } }
@media (min-width: 1280px) { .about-text { font-size: 17px; } }
.about-copy { display: flex; flex-direction: column; align-items: flex-start; }
/* Căn đáy cùng 2 cột ảnh thay vì thả nổi giữa lưới. */
@media (min-width: 1024px) { .about-copy { align-self: end; padding-bottom: 4px; } }
.about-img { align-self: end; }
.about-img img {
  width: 100%; height: 100%; object-fit: cover;
  border-radius: var(--radius); background: var(--bg-soft);
}
@media (min-width: 640px) { .about-img img { border-radius: var(--radius-lg); } }
.about-img-sm { aspect-ratio: 438 / 346; }
.about-img-lg { aspect-ratio: 3 / 2; }
.img-ph {
  width: 100%; height: 100%; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #ececec, #d8d8d8);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-3); font-size: 13px;
}

/* ============================================================================
   PROJECTS — card video, nút hover mở rộng
   ============================================================================ */
.project-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .project-grid { grid-template-columns: 1fr 1fr; gap: 24px; } }
@media (min-width: 1024px) { .project-grid { gap: 28px; } }

.project-media {
  position: relative; overflow: hidden; border-radius: var(--radius-lg);
  background: #1a1d2e; cursor: pointer;
}
.project-card:nth-child(even) .project-media { background: #6b6b6b; }
.project-media.ratio-a { aspect-ratio: 329 / 246; }
.project-media.ratio-b { aspect-ratio: 1 / 1; }
.project-media video, .project-media img { width: 100%; height: 100%; object-fit: cover; }

.project-btn {
  position: absolute; bottom: 16px; left: 16px;
  display: flex; align-items: center; gap: 8px;
  height: 36px; width: 36px; padding: 0 11px;
  border-radius: 999px; overflow: hidden;
  background: #fff; color: var(--ink);
  transition: width .3s ease-in-out;
}
.project-btn.dark { background: var(--ink); color: #fff; }
.project-btn span { font-size: 13px; font-weight: 500; white-space: nowrap; opacity: 0; transition: opacity .3s ease-in-out; }
.project-btn svg { width: 14px; height: 14px; flex: none; transform: rotate(-45deg); transition: transform .3s ease-in-out; }
.project-media:hover .project-btn { width: 148px; }
.project-media:hover .project-btn.dark { width: 168px; }
.project-media:hover .project-btn span { opacity: 1; transition-delay: .1s; }
.project-media:hover .project-btn svg { transform: rotate(0deg); }

.project-desc { font-size: 13px; color: var(--ink-2); margin: 16px 0 0; line-height: 1.625; }
@media (min-width: 640px) { .project-desc { font-size: 14px; } }
.project-name { font-size: 14px; font-weight: 600; color: var(--ink); margin: 4px 0 0; }
@media (min-width: 640px) { .project-name { font-size: 15px; } }

/* ============================================================================
   FEATURES / SERVICES / TECHNOLOGY
   ============================================================================ */
.feature-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 640px) { .feature-grid { grid-template-columns: 1fr 1fr; gap: 20px; } }
@media (min-width: 1024px) { .feature-grid { grid-template-columns: repeat(3, 1fr); } }
.feature-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px; transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-icon {
  width: 40px; height: 40px; border-radius: 10px; margin-bottom: 16px;
  background: rgba(212, 160, 23, .14); color: var(--gold-ink);
  display: flex; align-items: center; justify-content: center;
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-card h3 { font-size: 16px; font-weight: 600; margin: 0 0 8px; }
.feature-card p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.6; }

.service-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .service-grid { grid-template-columns: repeat(3, 1fr); } }
.service-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl);
  padding: 28px; transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.service-icon {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 20px;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 { font-size: 19px; font-weight: 500; letter-spacing: -.02em; margin: 0 0 10px; }
.service-card p { font-size: 14px; color: var(--ink-2); margin: 0 0 22px; line-height: 1.65; flex: 1; }
.service-link { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 500; color: var(--gold-ink); }
.service-link svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.service-card:hover .service-link svg { transform: translateX(4px); }

.tech-grid { display: grid; grid-template-columns: 1fr; gap: 0; }
@media (min-width: 768px) { .tech-grid { grid-template-columns: 1fr 1fr; column-gap: 32px; } }
.tech-card { display: flex; gap: 16px; padding: 24px 0; border-top: 1px solid var(--line); }
.tech-icon {
  width: 36px; height: 36px; border-radius: 999px; flex: none;
  border: 1px solid var(--line-2); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
}
.tech-icon svg { width: 18px; height: 18px; }
.tech-body h3 { font-size: 16px; font-weight: 600; margin: 0 0 6px; }
.tech-body p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.65; }

/* ---- partner band ---- */
.partner-band { background: var(--ink); color: #fff; padding: 64px 0; }
@media (min-width: 1024px) { .partner-band { padding: 96px 0; } }
.partner-band h2 { font-size: clamp(1.5rem, 4vw, 2.6rem); color: #fff; margin: 0 0 16px; max-width: 20ch; }
.partner-band p { font-size: 16px; color: rgba(255, 255, 255, .7); margin: 0; max-width: 62ch; }
.partner-badge {
  display: inline-block; font-size: 11px; letter-spacing: .16em; text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, .25); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 22px; color: rgba(255, 255, 255, .8);
}

/* ---- formats ---- */
.format-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .format-grid { grid-template-columns: repeat(3, 1fr); } }
.format-card {
  border: 1px solid var(--line); border-radius: var(--radius-xl); overflow: hidden; background: #fff;
  transition: box-shadow .3s var(--ease), transform .3s var(--ease);
}
.format-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.format-visual {
  aspect-ratio: 16 / 10; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #f7f7f7, #e8e8e8);
}
.format-visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.format-card:hover .format-visual img { transform: scale(1.04); }
.format-visual span { font-size: 22px; font-weight: 500; letter-spacing: -.02em; color: var(--ink-3); }
.format-body { padding: 22px; }
.format-body h3 { font-size: 17px; font-weight: 600; margin: 0 0 8px; }
.format-body p { font-size: 14px; color: var(--ink-2); margin: 0; line-height: 1.65; }

/* ---- pricing / ways to work ---- */
.pricing-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 768px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .pricing-grid { gap: 24px; } }
.pricing-card {
  position: relative; display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-xl); padding: 26px;
}
.pricing-highlight { border-color: var(--gold-ink); box-shadow: 0 10px 30px rgba(212, 160, 23, .16); }
.pricing-tag {
  position: absolute; top: -11px; left: 26px;
  background: var(--gold); color: var(--navy); font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 999px;
}
.pricing-model { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 10px; }
.pricing-card h3 { font-size: 19px; font-weight: 500; letter-spacing: -.02em; margin: 0 0 10px; }
.pricing-desc { font-size: 14px; color: var(--ink-2); margin: 0 0 18px; line-height: 1.6; }
.pricing-features { list-style: none; padding: 0; margin: 0 0 22px; flex: 1; }
.pricing-features li { position: relative; padding-left: 22px; margin-bottom: 9px; font-size: 13.5px; color: var(--ink-2); }
.pricing-features li::before {
  content: ""; position: absolute; left: 4px; top: 9px;
  width: 6px; height: 6px; border-radius: 999px; background: var(--gold);
}

/* ---- FAQ — desktop: tiêu đề dính bên trái, danh sách bên phải ---- */
.faq-layout { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 1024px) {
  .faq-layout { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 64px; align-items: start; }
  .faq-head { position: sticky; top: 104px; }
}
.faq-head h2 {
  font-size: clamp(1.5rem, 4vw, 3rem);
  font-weight: 500; line-height: 1.12; letter-spacing: -.02em; margin: 0 0 14px;
}
.faq-head p { font-size: 15px; color: var(--ink-2); margin: 0; }
.faq-head a { color: var(--gold-ink); text-decoration: underline; text-underline-offset: 3px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative;
  font-size: 16px; font-weight: 500; color: var(--ink);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 8px; top: 16px;
  font-size: 22px; font-weight: 300; color: var(--ink-3);
  transition: transform .3s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding: 0 40px 22px 0; font-size: 15px; color: var(--ink-2); line-height: 1.7; }

/* ---- CTA band ---- */
.cta-band { background: var(--ink); color: #fff; padding: 72px 0; }
@media (min-width: 1024px) { .cta-band { padding: 104px 0; } }
.cta-band h2 { font-size: clamp(1.6rem, 4.4vw, 3rem); color: #fff; margin: 0 0 14px; max-width: 24ch; }
.cta-band p { font-size: 16px; color: rgba(255, 255, 255, .7); margin: 0 0 28px; max-width: 60ch; }

/* ============================================================================
   PAGE HERO (blog/contact/404) + solution hero
   ============================================================================ */
.page-hero { background: var(--bg); padding: 128px 0 56px; }
@media (min-width: 1024px) { .page-hero { padding: 160px 0 72px; } }
.page-hero h1 {
  font-size: clamp(1.75rem, 6vw, 3.4rem);
  font-weight: 500; line-height: 1.08; letter-spacing: -.03em; margin: 0 0 14px;
}
.page-hero p { font-size: 16px; color: var(--ink-2); margin: 0; max-width: 62ch; }

.sol-hero { background: var(--bg); padding: 128px 0 64px; }
@media (min-width: 1024px) { .sol-hero { padding: 168px 0 88px; } }
.hero-eyebrow {
  display: inline-block; font-size: 12px; font-weight: 500; letter-spacing: .1em;
  text-transform: uppercase; color: var(--gold-ink); margin-bottom: 18px;
}
.sol-title {
  font-size: clamp(1.75rem, 5.5vw, 3.6rem);
  font-weight: 500; line-height: 1.1; letter-spacing: -.03em; margin: 0 0 18px; max-width: 26ch;
}
.sol-sub { font-size: 16px; color: var(--ink-2); max-width: 66ch; margin: 0 0 32px; line-height: 1.7; }
.sol-intro { font-size: 17px; color: var(--ink-2); line-height: 1.75; margin: 0; }

/* Đoạn dẫn: nhãn nhỏ bên trái, đoạn văn bên phải — thay cho một khối chữ
   lơ lửng chiếm nửa trái trang. */
.lede { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 1024px) {
  .lede { grid-template-columns: minmax(0, 22%) minmax(0, 1fr); gap: 64px; align-items: start; }
}
.lede-kicker {
  margin: 0; font-size: 11px; font-weight: 600; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-3);
}
@media (min-width: 1024px) { .lede-kicker { padding-top: 7px; } }
@media (min-width: 1024px) { .lede .sol-intro { font-size: 19px; max-width: 68ch; } }

/* Nhiều đoạn văn dài: chia 2 cột trên desktop để không thành một dải chữ
   hẹp chạy dọc nửa trái màn hình. */
.prose-cols { display: grid; grid-template-columns: 1fr; gap: 0 56px; }
@media (min-width: 900px) { .prose-cols { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1280px) { .prose-cols { gap: 0 72px; } }
.prose-cols p { font-size: 16px; line-height: 1.8; color: var(--ink-2); margin: 0 0 22px; }
@media (min-width: 1024px) { .prose-cols p { font-size: 16.5px; } }

.benefit-list { list-style: none; padding: 0; margin: 0; }
.benefit-list li {
  position: relative; padding: 16px 0 16px 34px;
  border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink);
}
.benefit-list li::before {
  content: ""; position: absolute; left: 4px; top: 24px;
  width: 8px; height: 8px; border-radius: 999px; background: var(--gold);
}

/* ============================================================================
   BLOG
   ============================================================================ */
.blog-toolbar {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  justify-content: space-between; margin-bottom: 32px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 13px; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.blog-search input {
  font-family: inherit; font-size: 14px; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 9px 18px; min-width: 220px; outline: none;
  transition: border-color .3s var(--ease);
}
.blog-search input::placeholder { color: var(--ink-3); }
.blog-search input:focus { border-color: var(--ink); }

.blog-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 640px) { .blog-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .blog-grid { grid-template-columns: repeat(3, 1fr); gap: 28px; } }
.blog-card { display: flex; flex-direction: column; }
.card-cover {
  aspect-ratio: 16 / 10; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--bg-soft); margin-bottom: 16px;
}
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.blog-card:hover .card-cover img { transform: scale(1.03); }
.card-cover-ph {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  font-size: 34px; font-weight: 500; color: var(--ink-3);
  background: linear-gradient(135deg, #f0f0f0, #dedede);
}
.card-body { display: flex; flex-direction: column; }
.card-cat { font-size: 12px; font-weight: 500; color: var(--gold-ink); margin-bottom: 8px; }
.card-body h3 { font-size: 17px; font-weight: 600; line-height: 1.35; margin: 0 0 8px; }
.card-body p { font-size: 14px; color: var(--ink-2); margin: 0 0 10px; line-height: 1.6; }
.card-date { font-size: 12px; color: var(--ink-3); }
.empty { color: var(--ink-3); font-size: 15px; padding: 40px 0; }

/* ---- post ---- */
.post { padding: 120px 0 0; }
@media (min-width: 1024px) { .post { padding-top: 152px; } }
.back-link { display: inline-block; font-size: 13px; color: var(--ink-2); margin-bottom: 20px; }
.back-link:hover { color: var(--gold-ink); }
.post-cat { display: block; font-size: 12px; font-weight: 500; color: var(--gold-ink); margin-bottom: 10px; }
.post h1 {
  font-size: clamp(1.6rem, 4.6vw, 3rem);
  font-weight: 500; line-height: 1.12; letter-spacing: -.03em; margin: 0 0 18px;
}
.post-meta { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font-size: 13px; color: var(--ink-3); }
.post-author { font-weight: 500; color: var(--ink); }
.post-author-role { color: var(--ink-3); }
.post-cover { max-width: var(--max); margin: 36px auto; padding: 0 20px; }
@media (min-width: 640px) { .post-cover { padding: 0 32px; } }
@media (min-width: 1024px) { .post-cover { padding: 0 48px; } }
/* Ảnh bìa phải khớp bề rộng cột chữ, nếu không bài viết trông lệch hẳn. */
.post-cover img { width: 100%; max-width: 880px; border-radius: var(--radius-xl); }
.post-content { font-size: 16.5px; line-height: 1.8; color: #1f2937; }
.post-content h2 { font-size: 26px; font-weight: 600; margin: 40px 0 14px; }
.post-content h3 { font-size: 20px; font-weight: 600; margin: 30px 0 12px; }
.post-content p { margin: 0 0 20px; }
.post-content ul, .post-content ol { margin: 0 0 20px; padding-left: 24px; }
.post-content li { margin-bottom: 8px; }
.post-content a { color: var(--gold-ink); text-decoration: underline; }
.post-content img { border-radius: var(--radius-lg); margin: 24px 0; }
.post-content blockquote {
  margin: 24px 0; padding: 4px 0 4px 20px;
  border-left: 3px solid var(--gold); color: var(--ink-2); font-style: italic;
}
.post-content code { background: var(--bg-soft); padding: 2px 6px; border-radius: 5px; font-size: 14px; }
.post-content pre {
  background: var(--ink); color: #f3f4f6; padding: 18px; border-radius: var(--radius);
  overflow-x: auto; font-size: 13.5px;
}
.post-content pre code { background: none; padding: 0; }
.post-author-box {
  display: flex; align-items: center; gap: 14px;
  margin: 44px 0 0; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-lg);
}
.post-author-avatar {
  width: 44px; height: 44px; border-radius: 999px; flex: none;
  background: var(--ink); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
}
.post-author-box strong { display: block; font-size: 15px; }
.post-author-box span { display: block; font-size: 13px; color: var(--ink-3); }

/* ============================================================================
   CONTACT FORM
   ============================================================================ */
/* Form một mình trên desktop 1440px trông trống nửa phải — ghép thêm cột
   thông tin liên hệ để cân trang. */
.contact-layout { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 900px) {
  .contact-layout { grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); gap: 56px; align-items: start; }
}
@media (min-width: 1280px) { .contact-layout { gap: 72px; } }
.contact-aside { display: flex; flex-direction: column; gap: 16px; }
.contact-card { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 22px; background: var(--bg-soft); }
.contact-card h2 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; font-weight: 600; }
.contact-card p { margin: 0; font-size: 14.5px; line-height: 1.7; color: var(--ink-2); }
.contact-card p strong { color: var(--ink); font-weight: 600; }
.contact-card a { color: var(--gold-ink); }
.contact-card ul { margin: 0; padding-left: 18px; }
.contact-card li { font-size: 14px; color: var(--ink-2); line-height: 1.65; margin-bottom: 10px; }
.contact-card li:last-child { margin-bottom: 0; }
.contact-card li strong { color: var(--ink); font-weight: 600; }
.contact-form { margin-top: 8px; }
.form-row { display: grid; grid-template-columns: 1fr; gap: 18px; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--ink); margin-bottom: 7px; }
.form-group input, .form-group textarea {
  width: 100%; font-family: inherit; font-size: 15px; color: var(--ink);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; outline: none; resize: vertical;
  transition: border-color .3s var(--ease);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--ink-3); }
.form-group input:focus, .form-group textarea:focus { border-color: var(--ink); }
.alert { border-radius: var(--radius); padding: 14px 16px; font-size: 14px; margin-bottom: 22px; }
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ============================================================================
   FOOTER
   ============================================================================ */
.footer { background: var(--ink); color: rgba(255, 255, 255, .7); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 900px) { .footer-grid { grid-template-columns: 1.4fr 2fr; gap: 56px; } }
.footer .logo-mark { background: transparent; }
.footer .logo-text { color: #fff; }
.footer .logo-text small { color: rgba(255,255,255,.6); }
.footer-brand p { font-size: 14px; margin: 16px 0 0; line-height: 1.7; max-width: 46ch; }
.footer-address { font-size: 13px; color: rgba(255, 255, 255, .55); }
.footer-address strong { color: #fff; font-weight: 600; }
.footer-address a { color: rgba(255, 255, 255, .8); }
.footer-address a:hover { color: var(--gold-soft); }
.footer-social { display: flex; gap: 16px; margin-top: 18px; }
.footer-social a { font-size: 13px; color: rgba(255, 255, 255, .7); }
.footer-social a:hover { color: #fff; }
.footer-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 28px; }
.footer-col h4 { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: #fff; margin: 0 0 14px; font-weight: 600; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { font-size: 14px; color: rgba(255, 255, 255, .7); }
.footer-col a:hover { color: var(--gold-soft); }
.footer-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13px; color: rgba(255, 255, 255, .5);
}

/* ============================================================================
   Liquid glass utilities
   ============================================================================ */
.liquid-glass {
  position: relative;
  background: rgba(255, 255, 255, .01);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, .1);
}
.liquid-glass::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.4px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .6), rgba(255, 255, 255, .05));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.liquid-glass-strong {
  background: rgba(255, 255, 255, .01);
  -webkit-backdrop-filter: blur(50px); backdrop-filter: blur(50px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, .1);
}

/* tôn trọng prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
}

/* ============================================================================
   COMPANY page — timeline + bảng thông tin pháp nhân
   ============================================================================ */
.timeline { list-style: none; padding: 0; margin: 0; counter-reset: tl; }
.timeline li {
  position: relative; counter-increment: tl;
  padding: 0 0 32px 44px; border-left: 1px solid var(--line-2);
}
.timeline li:last-child { border-left-color: transparent; padding-bottom: 0; }
.timeline li::before {
  content: counter(tl); position: absolute; left: -14px; top: -2px;
  width: 28px; height: 28px; border-radius: 999px;
  background: #fff; border: 1px solid var(--line-2); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
}
.timeline h3 { font-size: 17px; font-weight: 600; margin: 0 0 8px; }
.timeline p { font-size: 15px; color: var(--ink-2); margin: 0; line-height: 1.7; max-width: 72ch; }

.factsheet { display: grid; grid-template-columns: 1fr; gap: 0; margin: 0; }
@media (min-width: 768px) { .factsheet { grid-template-columns: 1fr 1fr; column-gap: 40px; } }
.factsheet > div { padding: 16px 0; border-top: 1px solid var(--line-2); }
.factsheet dt { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 6px; }
.factsheet dd { margin: 0; font-size: 15px; color: var(--ink); line-height: 1.6; }
.factsheet-note { margin: 24px 0 0; font-size: 13px; color: var(--ink-3); max-width: 70ch; }

/* ============================================================================
   LEGAL pages (/privacy, /terms)
   ============================================================================ */
.legal-updated { font-size: 13px; color: var(--ink-3); margin: 0; }
.legal-layout { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 1024px) { .legal-layout { grid-template-columns: 260px 1fr; gap: 64px; align-items: start; } }
.legal-toc {
  border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 20px;
  background: var(--bg-soft);
}
@media (min-width: 1024px) { .legal-toc { position: sticky; top: 88px; background: #fff; } }
.legal-toc h2 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; font-weight: 600; }
.legal-toc ol { list-style: none; counter-reset: toc; padding: 0; margin: 0; }
.legal-toc li { counter-increment: toc; margin-bottom: 8px; }
.legal-toc a { font-size: 13.5px; color: var(--ink-2); line-height: 1.5; }
.legal-toc a::before { content: counter(toc) ". "; color: var(--ink-3); }
.legal-toc a:hover { color: var(--gold-ink); }
.legal-body { max-width: 76ch; }
.legal-intro { font-size: 17px; line-height: 1.75; color: var(--ink); margin: 0 0 8px; }
.legal-section { padding-top: 32px; }
.legal-section h2 { font-size: 20px; font-weight: 600; letter-spacing: -.01em; margin: 0 0 12px; scroll-margin-top: 96px; }
.legal-section p { font-size: 15.5px; line-height: 1.8; color: var(--ink-2); margin: 0 0 16px; }
.legal-note {
  margin: 36px 0 0; padding: 18px 20px;
  background: var(--bg-soft); border-radius: var(--radius);
  font-size: 14px; color: var(--ink-2); line-height: 1.7;
}

/* ảnh đội ngũ đầu trang Company */
.company-hero-img { background: var(--bg); padding: 0 0 8px; }
.company-hero-img img {
  width: 100%; aspect-ratio: 3 / 2; object-fit: cover;
  border-radius: var(--radius-lg); background: var(--bg-soft);
}
@media (min-width: 640px) { .company-hero-img img { border-radius: var(--radius-xl); } }

/* ============================================================================
   REDESIGN 2026-09 — AI premium layer (hero AI, projects dark, pipeline, CTA)
   Viết sau toàn bộ CSS cũ nên có độ ưu tiên cao; giữ nguyên class cũ.
   ============================================================================ */

/* ---- hero additions ---- */
.hero-title { font-size: clamp(2.2rem, 8.6vw, 3rem); }
@media (min-width: 640px) { .hero-title { font-size: clamp(3rem, 6.4vw, 4.5rem); } }
@media (min-width: 1024px) { .hero-title { font-size: clamp(3.1rem, 4.2vw, 4.3rem); } }
.hero-sub { text-shadow: 0 1px 12px rgba(7, 33, 28, .6); }
.hero-ai-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600; letter-spacing: .02em; text-transform: none;
  color: #fff; background: rgba(45, 212, 168, .22);
  border: 1px solid rgba(45, 212, 168, .5); border-radius: 999px;
  padding: 3px 12px 3px 8px; margin-left: 10px; vertical-align: 2px;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.hero-ai-chip svg { width: 12px; height: 12px; color: #c9b8ff; }
.hero-label-text { color: var(--gold-soft); }
.hero-proof { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 26px; }
.hero-proof-chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12px; color: rgba(255, 255, 255, .85);
  border: 1px solid rgba(255, 255, 255, .16); border-radius: 999px;
  background: rgba(255, 255, 255, .06); padding: 6px 14px 6px 10px;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.hero-proof-chip svg { width: 13px; height: 13px; color: var(--gold-soft); }
.hero-panel.liquid-glass-strong {
  background: rgba(10, 22, 38, .55);
  border: 1px solid rgba(255, 255, 255, .14);
  box-shadow: 0 24px 64px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .12);
  -webkit-backdrop-filter: blur(24px); backdrop-filter: blur(24px);
}
.hero-panel-live {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 10px; letter-spacing: .12em;
  color: #7dffc4;
}
.live-dot { width: 7px; height: 7px; border-radius: 999px; background: #2ee59d; box-shadow: 0 0 0 0 rgba(46, 229, 157, .6); animation: live 2s infinite; }
@keyframes live { 0% { box-shadow: 0 0 0 0 rgba(46, 229, 157, .55); } 70% { box-shadow: 0 0 0 8px rgba(46, 229, 157, 0); } 100% { box-shadow: 0 0 0 0 rgba(46, 229, 157, 0); } }
.hero-scroll { position: absolute; left: 50%; bottom: 18px; z-index: 3; transform: translateX(-50%); opacity: .7; }
.hero-scroll span { display: block; width: 22px; height: 36px; border: 1.5px solid rgba(255, 255, 255, .5); border-radius: 999px; position: relative; }
.hero-scroll span::after { content: ""; position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 999px; background: var(--gold-soft); animation: scrolldot 1.8s ease-in-out infinite; }
@keyframes scrolldot { 0% { transform: translateY(0); opacity: 1; } 60% { transform: translateY(10px); opacity: 0; } 100% { opacity: 0; } }
@media (max-width: 1023px) { .hero-scroll { display: none; } }

/* ---- reveal on scroll ---- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); transition-delay: var(--d, 0ms); }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity: 1; transform: none; transition: none; } .hero-aurora, .project-marquee-track, .cta-orb { animation: none !important; } }

/* ---- about stats ---- */
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 6px 0 26px; width: 100%; }
.about-stat { border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 14px 12px; background: #fff; }
.about-stat strong { display: block; font-family: var(--font-display); font-size: 24px; font-weight: 700; letter-spacing: -.02em; background: linear-gradient(135deg, var(--gold-ink), var(--gold-dark)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.about-stat span { display: block; font-size: 11.5px; line-height: 1.5; color: var(--ink-2); margin-top: 4px; }
@media (min-width: 1024px) { .about-stat strong { font-size: 28px; } }
.about-img { position: relative; }
.about-img img { transition: transform .8s var(--ease-out), box-shadow .5s var(--ease); }
.about-img:hover img { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* ---- projects: dark premium ---- */
.section-dark { background: var(--deep); color: #fff; }
.section-dark .section-title-lg { color: #fff; }
.section-dark .badge-num { background: var(--gold); color: var(--navy); }
.section-dark .badge-pill { color: #fff; border-color: rgba(255, 255, 255, .22); }
.section-projects { position: relative; overflow: hidden; }
.section-projects::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(800px 480px at 88% 6%, rgba(212, 160, 23, .14), transparent 62%),
    radial-gradient(760px 480px at 6% 94%, rgba(45, 212, 168, .16), transparent 60%);
}
.project-grid { display: grid; grid-template-columns: 1fr; gap: 22px; position: relative; }
@media (min-width: 1024px) { .project-grid { grid-template-columns: 1.25fr 1fr; gap: 24px; align-items: stretch; } }
.project-card { display: flex; flex-direction: column; }
.project-card .project-media {
  position: relative; overflow: hidden; border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, .12);
  aspect-ratio: 16 / 10; background: #131c2e;
  transition: transform .5s var(--ease-out), box-shadow .5s var(--ease), border-color .4s var(--ease);
}
.project-card-wide .project-media { aspect-ratio: 16 / 9.5; }
.project-card .project-media img, .project-card .project-media video { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease-out); }
.project-card:hover .project-media { transform: translateY(-4px); box-shadow: 0 28px 64px rgba(0, 0, 0, .5); border-color: rgba(212, 160, 23, .45); }
.project-card:hover .project-media img, .project-card:hover .project-media video { transform: scale(1.045); }
.project-kicker {
  position: absolute; top: 14px; left: 14px;
  font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: #fff; background: rgba(7, 33, 28, .55); border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 999px; padding: 5px 13px;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.project-btn {
  position: absolute; bottom: 14px; right: 14px; left: auto;
  display: flex; align-items: center; justify-content: center;
  height: 44px; width: 44px; padding: 0; border-radius: 999px;
  background: var(--gold); color: var(--navy);
  box-shadow: 0 10px 28px rgba(212, 160, 23, .45);
  transition: transform .4s var(--ease), background .3s var(--ease);
  overflow: visible;
}
.project-btn svg { width: 17px; height: 17px; transform: rotate(-45deg); transition: transform .4s var(--ease); }
.project-card:hover .project-btn { transform: scale(1.08); }
.project-card:hover .project-btn svg { transform: rotate(0deg); }
.project-btn span { display: none; }
.project-meta { display: flex; gap: 14px; align-items: flex-start; justify-content: space-between; padding: 16px 4px 0; }
.project-name { font-size: 17px; font-weight: 600; color: #fff; margin: 0 0 6px; font-family: var(--font-display); }
.project-desc { font-size: 13.5px; color: rgba(255, 255, 255, .62); margin: 0; line-height: 1.6; }
.project-tag {
  flex: none; font-size: 10.5px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--gold-soft); border: 1px solid rgba(212, 160, 23, .4); border-radius: 999px;
  padding: 5px 12px; margin-top: 2px;
}
.project-marquee { overflow: hidden; margin-top: 56px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.project-marquee-track { display: flex; gap: 0; width: max-content; animation: marquee 30s linear infinite; }
.project-marquee-track span {
  font-family: var(--font-display); font-size: 15px; font-weight: 500; letter-spacing: .06em; text-transform: uppercase;
  color: rgba(255, 255, 255, .38); padding: 0 26px; white-space: nowrap; position: relative;
}
.project-marquee-track span::after { content: "✦"; position: absolute; right: -6px; color: rgba(212, 160, 23, .6); font-size: 11px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---- AI pipeline band ---- */
.section-ai { background: linear-gradient(180deg, #fff 0%, #f3ecff 55%, #fff 100%); position: relative; overflow: hidden; }
.section-ai::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(700px 400px at 12% 20%, rgba(45, 212, 168, .12), transparent 65%); }
.ai-grid { display: grid; grid-template-columns: 1fr; gap: 40px; position: relative; }
@media (min-width: 1024px) { .ai-grid { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 72px; align-items: center; } }
.ai-copy h2 { font-size: clamp(1.7rem, 4.4vw, 3.1rem); margin: 0 0 16px; }
.ai-copy h2 .grad { background: linear-gradient(120deg, var(--gold-dark), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ai-copy p { font-size: 16px; color: var(--ink-2); line-height: 1.75; margin: 0 0 28px; max-width: 52ch; }
.ai-copy .badge-num { background: linear-gradient(135deg, var(--violet), #5b3df5); }
.ai-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; counter-reset: ai; }
.ai-steps li {
  position: relative; display: flex; gap: 16px; align-items: flex-start;
  background: rgba(255, 255, 255, .75); border: 1px solid rgba(45, 212, 168, .18);
  border-radius: var(--radius-lg); padding: 18px;
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  box-shadow: 0 8px 28px rgba(45, 212, 168, .1);
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease);
}
.ai-steps li:hover { transform: translateX(6px); box-shadow: 0 14px 36px rgba(45, 212, 168, .18); }
.ai-step-num { font-family: var(--font-display); font-size: 13px; font-weight: 700; color: var(--violet); background: rgba(45, 212, 168, .1); border-radius: 8px; padding: 5px 9px; flex: none; margin-top: 1px; }
.ai-step-icon { width: 38px; height: 38px; border-radius: 11px; flex: none; background: var(--ink); color: #fff; display: flex; align-items: center; justify-content: center; }
.ai-step-icon svg { width: 19px; height: 19px; }
.ai-steps h3 { font-size: 15.5px; margin: 0 0 5px; }
.ai-steps p { font-size: 13.5px; color: var(--ink-2); margin: 0; line-height: 1.65; }

/* ---- feature/service/tech polish ---- */
.feature-card { border-radius: var(--radius-lg); position: relative; overflow: hidden; }
.feature-card::after { content: ""; position: absolute; inset: auto 0 0 0; height: 3px; background: linear-gradient(90deg, var(--gold), var(--violet)); opacity: 0; transition: opacity .4s var(--ease); }
.feature-card:hover::after { opacity: 1; }
.feature-icon { background: linear-gradient(135deg, rgba(212, 160, 23, .18), rgba(45, 212, 168, .16)); color: var(--gold-ink); }
.service-card { position: relative; overflow: hidden; }
.service-card::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: radial-gradient(420px 200px at 50% -20%, rgba(212, 160, 23, .12), transparent 70%); opacity: 0; transition: opacity .5s var(--ease); pointer-events: none; }
.service-card:hover::before { opacity: 1; }
.service-icon { background: linear-gradient(135deg, var(--navy) 0%, #2a1f6e 100%); box-shadow: 0 10px 24px rgba(15, 46, 43, .3); }

/* ---- partner band: gradient mesh ---- */
.partner-band { background: linear-gradient(140deg, #07211c 0%, #0f2e2b 52%, #241a5e 100%); position: relative; overflow: hidden; }
.partner-band::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(600px 320px at 85% 30%, rgba(212, 160, 23, .18), transparent 65%); }

/* ---- formats: taller visual + badge ---- */
.format-visual { aspect-ratio: 16 / 10; position: relative; }
.format-card { border-radius: var(--radius-xl); }
.format-body h3 { font-family: var(--font-display); }

/* ---- pricing ---- */
.pricing-card { border-radius: var(--radius-xl); transition: transform .4s var(--ease-out), box-shadow .4s var(--ease); }
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-highlight { border: 1.5px solid transparent; background: linear-gradient(#fff, #fff) padding-box, linear-gradient(135deg, var(--gold), var(--violet)) border-box; }

/* ---- CTA AI ---- */
.cta-band { position: relative; overflow: hidden; }
.cta-ai { background: linear-gradient(150deg, #07211c 0%, #0f2e2b 55%, #2a1e63 100%); }
.cta-orb { position: absolute; width: 560px; height: 560px; right: -140px; top: -180px; border-radius: 50%; background: radial-gradient(circle, rgba(212, 160, 23, .3) 0%, rgba(45, 212, 168, .22) 45%, transparent 70%); filter: blur(10px); animation: orb 10s ease-in-out infinite alternate; pointer-events: none; }
@keyframes orb { 0% { transform: translate(0, 0) scale(1); } 100% { transform: translate(-60px, 60px) scale(1.12); } }
.cta-pill { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--gold-soft); border: 1px solid rgba(212, 160, 23, .4); border-radius: 999px; padding: 6px 16px 6px 10px; margin-bottom: 22px; background: rgba(212, 160, 23, .08); }
.cta-pill svg { width: 14px; height: 14px; }

/* ---- sol-hero AI ---- */
.sol-hero-ai { position: relative; overflow: hidden; isolation: isolate; background: var(--deep); color: #fff; }
.sol-hero-media { position: absolute; inset: 0; z-index: -1; }
.sol-hero-media img { width: 100%; height: 100%; object-fit: cover; opacity: .4; }
.sol-hero-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(7,33,28,.55 0%, rgba(7,33,28,.35 50%, var(--deep) 100%), radial-gradient(700px 420px at 80% 20%, rgba(212,160,23,.2, transparent 62%); }
.sol-hero-ai .container { position: relative; }
.sol-hero-ai .sol-title { color: #fff; }
.sol-hero-ai .sol-sub { color: rgba(255, 255, 255, .75); }
.sol-hero-ai .hero-eyebrow { color: var(--gold-soft); }
.section-company-img { padding-top: 0; }
.section-company-img .company-hero-img img { border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); }

/* ---- contact top banner ---- */
.contact-top {
  display: grid; grid-template-columns: 1fr; gap: 0; overflow: hidden;
  border: 1px solid var(--line); border-radius: var(--radius-xl);
  margin-bottom: 36px; background: var(--deep);
}
@media (min-width: 900px) { .contact-top { grid-template-columns: 1.1fr 1fr; } }
.contact-top img { width: 100%; height: 220px; object-fit: cover; }
@media (min-width: 900px) { .contact-top img { height: 100%; min-height: 240px; } }
.contact-top-copy { padding: 28px; display: flex; flex-direction: column; justify-content: center; }
@media (min-width: 900px) { .contact-top-copy { padding: 36px 40px; } }
.contact-top-kicker {
  display: inline-block; align-self: flex-start;
  font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--gold-soft); border: 1px solid rgba(212, 160, 23, .4); border-radius: 999px;
  padding: 5px 14px; margin-bottom: 14px; background: rgba(212, 160, 23, .08);
}
.contact-top-copy p { margin: 0; font-size: 16px; line-height: 1.7; color: rgba(255, 255, 255, .85); }