/* Trang giới thiệu KeyStay — theme rico "Airbnb" (trắng ấm, coral, bo tròn 8–12px, nhiều khoảng thở) + logo KeyStay giữ nguyên.
   Dùng chung cho mọi trang: / (landing.html), /giai-phap/*, /bang-gia, /demo, /tai-lieu. Thiết kế: docs/LANDING-DESIGN.md. */

:root {
  /* Màu: coral chỉ cho nút chính / điểm nhấn (≤ 10% diện tích). Nút coral dùng bản đậm để chữ trắng đạt AA (4.67:1). */
  --coral: #FF5A5F;
  --coral-btn: #D6383F;
  --coral-btn-hover: #C8323A;
  --coral-ink: #C8323A;
  --coral-soft: #FFF0F0;
  /* Màu logo KeyStay (trang trí) + bản đậm để viết chữ */
  --teal: #4FC3BE;
  --teal-ink: #007A70;
  --teal-soft: #E7F6F5;
  --pink: #EF73BA;
  --pink-ink: #A8326F;
  --pink-soft: #FDEEF6;
  --amber: #FFB400;
  --amber-ink: #8A5A00;
  --amber-soft: #FFF5DC;
  --green: #008A05;
  /* Trung tính ấm (không đen / trắng tuyệt đối cho chữ) */
  --ink: #222222;
  --ink-2: #484848;
  --muted: #6A6A6A;
  --line: #EBEBEB;
  --line-2: #DDDDDD;
  --paper: #F7F7F7;
  --bg: #FFFFFF;
  --night: #1B1B1D;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --sh-sm: 0 1px 2px rgba(34, 34, 34, .08);
  --sh-md: 0 2px 8px rgba(34, 34, 34, .10);
  --sh-lg: 0 6px 20px rgba(34, 34, 34, .12);
  --sh-xl: 0 16px 48px rgba(34, 34, 34, .16);
  --ease: cubic-bezier(.25, .1, .25, 1);
  --t: .2s;

  --wrap: 1200px;
  --gutter: 64px;
  --nav-h: 72px;
  --font: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-brand: 'Montserrat', var(--font);
}
@media (max-width: 1024px) { :root { --gutter: 40px; } }
@media (max-width: 640px) { :root { --gutter: 16px; --nav-h: 64px; } }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--ink); background: var(--bg); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -.02em; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }
::selection { background: var(--coral-soft); color: var(--ink); }

.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: calc(820px + var(--gutter) * 2); }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: var(--r-sm); }
.skip:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Logo KeyStay (giữ nguyên: 3 ô xanh ngọc, 1 ô hồng) ---------- */
.mark { display: inline-grid; grid-template-columns: repeat(2, 11px); gap: 3px; flex: none; }
.mark i { width: 11px; height: 11px; border-radius: 2px; background: var(--teal); }
.mark i.p { background: var(--pink); }
.mark.lg { grid-template-columns: repeat(2, 22px); gap: 6px; }
.mark.lg i { width: 22px; height: 22px; border-radius: 4px; }
.wordmark { font-family: var(--font-brand); font-weight: 600; letter-spacing: .2em; font-size: 15px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }

/* ---------- Nút ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 24px; border-radius: var(--r-sm); font-weight: 600; font-size: 16px; border: 1px solid transparent; transition: background var(--t) var(--ease), border-color var(--t) var(--ease), transform var(--t) var(--ease), box-shadow var(--t) var(--ease); white-space: nowrap; }
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--coral-btn); color: #fff; }
.btn-primary:hover { background: var(--coral-btn-hover); box-shadow: 0 6px 16px rgba(214, 56, 63, .25); }
.btn-secondary { background: var(--bg); color: var(--ink); border-color: var(--line-2); }
.btn-secondary:hover { border-color: var(--ink); }
.btn-ghost { background: transparent; color: var(--ink); height: 40px; padding: 0 14px; }
.btn-ghost:hover { background: var(--paper); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #000; }
.btn-sm { height: 40px; padding: 0 16px; font-size: 15px; }
.btn-lg { height: 56px; padding: 0 32px; font-size: 17px; }
.btn .arr { transition: transform var(--t) var(--ease); }
.btn:hover .arr, .link-arrow:hover .arr { transform: translateX(3px); }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--ink); border-bottom: 1px solid transparent; transition: border-color var(--t) var(--ease); }
.link-arrow:hover { border-color: currentColor; }
.arr { display: inline-block; }

/* ---------- Thanh điều hướng + mega menu ---------- */
.nav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); background: rgba(255, 255, 255, .92); backdrop-filter: saturate(180%) blur(12px); -webkit-backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid transparent; transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease); }
.nav.scrolled { border-color: var(--line); box-shadow: var(--sh-sm); }
.nav-in { height: 100%; display: flex; align-items: center; gap: 32px; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-right: auto; }
.nav-links > a, .nav-links > .has-mega > button { white-space: nowrap; display: inline-flex; align-items: center; gap: 4px; height: 40px; padding: 0 14px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--ink-2); background: none; border: 0; transition: background var(--t) var(--ease), color var(--t) var(--ease); }
.nav-links > a:hover, .nav-links > .has-mega > button:hover, .has-mega.open > button { background: var(--paper); color: var(--ink); }
.nav-links a[aria-current="page"], .has-mega.current > button { color: var(--ink); font-weight: 600; }
.chev { width: 14px; height: 14px; transition: transform var(--t) var(--ease); }
.has-mega.open .chev { transform: rotate(180deg); }
.nav-cta { display: flex; align-items: center; gap: 8px; }
.has-mega { position: relative; }
.mega { position: absolute; top: calc(100% + 12px); left: -24px; width: 680px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--sh-xl); padding: 12px; visibility: hidden; opacity: 0; transform: translateY(-6px); transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility 0s linear var(--t); }
.has-mega.open .mega { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
.mega::before { content: ''; position: absolute; left: 0; right: 0; top: -14px; height: 14px; } /* cầu nối để rê chuột không bị đóng */
.mega-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.mega-item { display: flex; gap: 14px; padding: 14px; border-radius: var(--r-md); transition: background var(--t) var(--ease); }
.mega-item:hover, .mega-item:focus-visible { background: var(--paper); }
.mega-item b { display: block; font-size: 16px; }
.mega-item small { display: block; font-size: 13px; color: var(--teal-ink); font-weight: 600; margin: 1px 0 4px; }
.mega-item > span:last-child > span { display: block; font-size: 14px; color: var(--muted); line-height: 1.5; }
.mega-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 8px; padding: 14px 16px; border-radius: var(--r-md); background: var(--paper); font-size: 14px; color: var(--muted); }
.mega-foot a { font-weight: 600; color: var(--ink); }
.burger { display: none; width: 44px; height: 44px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--bg); align-items: center; justify-content: center; }
.burger span { position: relative; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: background var(--t); }
.burger span::before, .burger span::after { content: ''; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform var(--t) var(--ease); }
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.nav.menu-open .burger span { background: transparent; }
.nav.menu-open .burger span::before { transform: translateY(6px) rotate(45deg); }
.nav.menu-open .burger span::after { transform: translateY(-6px) rotate(-45deg); }
.drawer { display: none; }

@media (max-width: 1100px) {
  .nav-links, .nav-cta .link-login { display: none; }
  .nav-in { gap: 12px; justify-content: space-between; }
  .burger { display: inline-flex; }
  .drawer { display: block; position: absolute; top: 100%; left: 0; right: 0; height: calc(100vh - var(--nav-h)); height: calc(100dvh - var(--nav-h)); background: var(--bg); padding: 16px var(--gutter) 32px; overflow-y: auto; visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity var(--t) var(--ease), transform var(--t) var(--ease), visibility 0s linear var(--t); }
  .nav.menu-open .drawer { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
  .drawer a.d-link { display: flex; align-items: center; justify-content: space-between; padding: 16px 4px; font-size: 18px; font-weight: 600; border-bottom: 1px solid var(--line); }
  .drawer .d-group { padding: 8px 0 12px; border-bottom: 1px solid var(--line); }
  .drawer .d-group > p { padding: 8px 4px; font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
  .drawer .mega-item { padding: 12px 4px; }
  .drawer .d-cta { display: grid; gap: 10px; margin-top: 24px; }
  .drawer .d-cta .btn { width: 100%; }
  body.no-scroll { overflow: hidden; }
}
@media (max-width: 420px) { .nav-cta .btn-primary { display: none; } }

/* ---------- Biểu tượng sản phẩm ---------- */
.ico { flex: none; display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--r-md); }
.ico svg { width: 22px; height: 22px; }
.ico.sm { width: 36px; height: 36px; border-radius: 10px; }
.ico.sm svg { width: 18px; height: 18px; }
.ico.lg { width: 56px; height: 56px; border-radius: 14px; }
.ico.lg svg { width: 28px; height: 28px; }
.c-coral { background: var(--coral-soft); color: var(--coral-ink); }
.c-teal { background: var(--teal-soft); color: var(--teal-ink); }
.c-amber { background: var(--amber-soft); color: var(--amber-ink); }
.c-pink { background: var(--pink-soft); color: var(--pink-ink); }
.c-ink { background: var(--paper); color: var(--ink); }
[data-icon] { display: inline-flex; }
.btn svg { width: 20px; height: 20px; }
svg.i { fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Chữ chung ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--coral-ink); }
.pill { display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 14px; border-radius: 999px; background: var(--paper); font-size: 14px; font-weight: 500; color: var(--ink-2); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(0, 138, 5, .12); }
.tag { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.tag.live { background: #E8F5E9; color: #1B6E1F; }
.tag.soon { background: var(--paper); color: var(--muted); }
.lead { font-size: 19px; line-height: 1.6; color: var(--muted); }
.h-display { text-wrap: balance; font-size: clamp(34px, 3.4vw, 48px); line-height: 1.08; letter-spacing: -.03em; }
.h-section { font-size: clamp(30px, 3.6vw, 44px); line-height: 1.15; letter-spacing: -.025em; }
.hl { color: var(--coral-ink); }
.sec { padding: 112px 0; }
.sec.tight { padding: 80px 0; }
.sec.paper { background: var(--paper); }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head .h-section { margin: 12px 0 16px; }
@media (max-width: 640px) {
  .sec { padding: 72px 0; }
  .sec.tight { padding: 56px 0; }
  .sec-head { margin-bottom: 36px; }
  .lead { font-size: 17px; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: 72px 0 96px; overflow: hidden; }
.hero-in { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 64px; align-items: center; }
.hero-copy .pill { margin-bottom: 24px; }
.hero-copy .h-display { margin-bottom: 20px; }
.hero-copy .lead { max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: 14px; color: var(--muted); }
.hero-proof span { display: inline-flex; align-items: center; gap: 8px; }
.hero-proof svg { width: 18px; height: 18px; color: var(--teal-ink); }
.split-line { display: block; overflow: hidden; padding: .14em 0 .16em; margin: -.14em 0 -.16em; } /* chừa chỗ cho dấu tiếng Việt */
.split-line > span { display: inline-block; }
@media (max-width: 1100px) {
  .hero { padding: 40px 0 72px; }
  .hero-in { grid-template-columns: 1fr; gap: 48px; }
}

/* ---------- Khung "ảnh chụp màn hình" dựng bằng HTML ---------- */
.window { position: relative; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--sh-xl); overflow: hidden; }
.win-bar { display: flex; align-items: center; gap: 12px; height: 44px; padding: 0 16px; border-bottom: 1px solid var(--line); background: #FCFCFC; font-size: 13px; color: var(--muted); }
.win-bar .dots { display: flex; gap: 6px; }
.win-bar .dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-2); }
.win-bar b { color: var(--ink); font-weight: 600; }
.win-bar .chip { margin-left: auto; padding: 2px 10px; border-radius: 999px; background: var(--paper); font-size: 12px; }
.win-body { padding: 18px; }
.stage { position: relative; }
.stage .window { z-index: 1; }

/* KPI nhỏ trong cửa sổ */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.kpi { padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); }
.kpi small { display: block; font-size: 12px; color: var(--muted); }
.kpi b { display: block; font-size: 22px; line-height: 1.3; }
.kpi span { display: block; font-size: 11px; color: var(--muted); }
@media (max-width: 480px) { .kpis { grid-template-columns: repeat(2, 1fr); } }

/* Mini timeline sơ đồ phòng */
.tl { display: grid; gap: 8px; font-size: 12px; }
.tl-head, .tl-row { display: grid; grid-template-columns: 52px 1fr; align-items: center; gap: 8px; }
.tl-head .days { display: grid; grid-template-columns: repeat(7, 1fr); color: var(--muted); text-align: center; }
.tl-head .days span.today { color: var(--coral-ink); font-weight: 700; }
.tl-row > span { font-weight: 600; color: var(--ink-2); }
.tl-row.unassigned > span { color: var(--coral-ink); font-size: 11px; line-height: 1.2; }
.trk { position: relative; height: 30px; border-radius: 6px; background: repeating-linear-gradient(90deg, var(--paper) 0 calc(100% / 7 - 1px), var(--line) calc(100% / 7 - 1px) calc(100% / 7)); }
.tl-row.hot .trk { box-shadow: inset 0 0 0 2px var(--teal); background-color: var(--teal-soft); }
.bk { position: absolute; top: 3px; bottom: 3px; left: var(--l, 0); width: var(--w, 30%); display: flex; align-items: center; padding: 0 8px 0 10px; border-radius: 6px; font-size: 11px; font-weight: 600; white-space: nowrap; overflow: hidden; transform-origin: left center; }
.bk.occ { background: #E3F4F3; color: #0B5C56; }
.bk.arr { background: #FFE9E4; color: #9A2A2F; }
.bk.ota { background: #FFF3D6; color: #7A4F00; }
.bk .pay { position: absolute; left: 0; top: 0; bottom: 0; width: 4px; }
.pay.paid { background: var(--green); }
.pay.part { background: var(--amber); }
.pay.due { background: var(--coral); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; }

/* Thẻ nổi quanh cửa sổ (thông báo) */
.float { position: absolute; z-index: 2; display: flex; align-items: center; gap: 12px; padding: 12px 16px 12px 12px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-md); box-shadow: var(--sh-lg); font-size: 13px; line-height: 1.4; max-width: 280px; }
.float b { display: block; font-size: 14px; }
.float > span:last-child > span { color: var(--muted); }
.stage { padding: 28px 0 44px; }
.float.f1 { left: -44px; bottom: 0; }
.float.f2 { right: -36px; top: 0; }
.float.f3 { right: -28px; bottom: 120px; max-width: 240px; }
@media (max-width: 1200px) { .float.f1 { left: -12px; } .float.f2 { right: -8px; } }
@media (max-width: 640px) { .stage { padding: 0; } .float { position: relative; inset: auto !important; margin-top: 12px; max-width: none; } .float.f3 { display: none; } }

/* ---------- Dải logo OTA chạy ---------- */
.marquee { padding: 40px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.marquee p { text-align: center; font-size: 14px; color: var(--muted); margin-bottom: 20px; }
.mq-view { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.mq-track { display: flex; gap: 56px; width: max-content; }
.mq-track span { font-size: 22px; font-weight: 700; letter-spacing: -.02em; color: #9A9A9A; white-space: nowrap; }
.mq-track span em { font-style: normal; font-weight: 500; }

/* ---------- Bộ giải pháp (bento) ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; }
.card { position: relative; display: flex; flex-direction: column; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease); }
a.card:hover, .card.hover:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); border-color: var(--line-2); }
.prod { grid-column: span 3; min-height: 320px; overflow: hidden; }
.prod.big { grid-column: span 4; }
.prod.small { grid-column: span 2; }
.prod-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.prod-head h3 { font-size: 24px; }
.prod-head small { display: block; font-size: 14px; color: var(--muted); font-weight: 500; letter-spacing: 0; }
.prod p { color: var(--muted); margin-bottom: 18px; max-width: 520px; }
.prod ul { display: grid; gap: 8px; margin-bottom: 24px; font-size: 15px; }
.prod li { display: flex; gap: 10px; align-items: flex-start; }
.prod li svg { flex: none; width: 18px; height: 18px; margin-top: 3px; color: var(--teal-ink); }
.prod .link-arrow { margin-top: auto; align-self: flex-start; }
@media (max-width: 1024px) { .prod, .prod.big, .prod.small { grid-column: span 3; } }
@media (max-width: 720px) { .bento { grid-template-columns: 1fr; gap: 16px; } .prod, .prod.big, .prod.small { grid-column: auto; min-height: 0; } }

/* ---------- Một ngày ở quầy (ghim + cuộn) ---------- */
.day-in { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 64px; align-items: center; min-height: calc(100vh - var(--nav-h)); padding: 48px 0; }
.steps { display: grid; gap: 4px; margin-top: 32px; counter-reset: s; }
.step { position: relative; padding: 16px 20px 16px 72px; border-radius: var(--r-md); transition: background .3s var(--ease); }
.step time { position: absolute; left: 20px; top: 18px; font-size: 13px; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; transition: color .3s var(--ease); }
.step h3 { font-size: 17px; letter-spacing: -.01em; margin-bottom: 4px; }
.step p { font-size: 15px; color: var(--muted); }
.step.is-on { background: var(--bg); box-shadow: var(--sh-md); }
.step.is-on time { color: var(--coral-ink); }
.js .day-pin .step:not(.is-on) p { display: none; }
.device { position: relative; aspect-ratio: 4 / 3.3; }
.scr { position: absolute; inset: 0; display: flex; flex-direction: column; }
.js .day-pin .scr:not(:first-child) { visibility: hidden; }
html:not(.js) .device .scr:not(:first-child) { display: none; }
.scr .win-body { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.progress { display: flex; gap: 6px; margin-top: 18px; justify-content: center; }
.progress i { width: 28px; height: 4px; border-radius: 4px; background: var(--line-2); transition: background .3s var(--ease), width .3s var(--ease); }
.progress i.is-on { background: var(--coral); width: 40px; }
.rowlist { display: grid; gap: 8px; font-size: 14px; }
.rowlist p { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); }
.rowlist em { font-style: normal; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line-2); white-space: nowrap; }
.rowlist em.warn { background: var(--coral-btn); border-color: var(--coral-btn); color: #fff; }
.receipt { margin: auto; width: 230px; padding: 20px; background: #FFFDF8; border: 1px dashed var(--line-2); border-radius: var(--r-sm); text-align: center; font-size: 13px; color: var(--ink-2); }
.receipt b { display: block; letter-spacing: .14em; margin-bottom: 6px; }
.receipt .big { font-size: 26px; font-weight: 800; color: var(--ink); margin: 8px 0 2px; }
.receipt .words { font-style: italic; color: var(--muted); }
.form-rows { display: grid; gap: 8px; font-size: 14px; }
.form-rows p { display: grid; grid-template-columns: 96px 1fr; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--r-sm); }
.form-rows small { color: var(--muted); }
.ok-chip { align-self: flex-start; display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: #E8F5E9; color: #1B6E1F; font-size: 13px; font-weight: 600; }
.idcard { display: flex; gap: 14px; align-items: center; padding: 14px; border-radius: var(--r-md); background: linear-gradient(135deg, #F3FBFA, #FFF4F9); border: 1px solid var(--line); }
.qr { position: relative; flex: none; width: 76px; height: 76px; border-radius: 8px; background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 7 7' shape-rendering='crispEdges'%3E%3Cpath fill='%23222' d='M0 0h3v3H0zM4 0h3v3H4zM0 4h3v3H0zM4 4h1v1H4zM6 4h1v1H6zM5 5h1v1H5zM4 6h1v1H4zM6 6h1v1H6z'/%3E%3Cpath fill='%23fff' d='M1 1h1v1H1zM5 1h1v1H5zM1 5h1v1H1z'/%3E%3C/svg%3E") center / 64px no-repeat; border: 1px solid var(--line); overflow: hidden; }
.qr .scan { position: absolute; left: 0; right: 0; top: 4px; height: 2px; background: var(--coral); box-shadow: 0 0 10px var(--coral); }
.rooms { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.rooms span { padding: 16px 0; text-align: center; border-radius: var(--r-sm); border: 1px solid var(--line); font-weight: 700; font-size: 15px; }
.rooms span.on { background: var(--teal-soft); border-color: var(--teal); color: var(--teal-ink); }
.rooms span.dirty { background: var(--paper); color: #A0A0A0; text-decoration: line-through; }
.hint { font-size: 13px; color: var(--muted); }
.audit { display: grid; gap: 8px; }
.audit p { display: flex; justify-content: space-between; padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); font-size: 14px; }
.audit b.good { color: var(--green); }
.lock { margin-top: auto; padding: 12px; border-radius: var(--r-sm); background: var(--ink); color: #fff; font-size: 14px; text-align: center; }
@media (max-width: 960px) {
  .day-in { grid-template-columns: 1fr; gap: 40px; min-height: 0; padding: 0; }
  .js .day-pin .step:not(.is-on) p { display: block; }
  .device { aspect-ratio: auto; display: grid; gap: 16px; }
  .scr { position: relative; }
  .js .day-pin .scr:not(:first-child) { visibility: visible; }
  .device .scr:not(:first-child) { display: none; }
}

/* ---------- Lưới tính năng / lợi ích ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 16px; } }
.feat { padding: 28px; border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line); }
.sec.paper .feat { border-color: transparent; }
.feat .ico { margin-bottom: 18px; }
.feat h3 { font-size: 18px; letter-spacing: -.01em; margin-bottom: 8px; }
.feat p { font-size: 15px; color: var(--muted); }
.feat .tag { margin-top: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat b { display: block; font-size: clamp(36px, 4vw, 48px); line-height: 1.1; letter-spacing: -.03em; }
.stat span { display: block; margin-top: 8px; font-size: 15px; color: var(--muted); max-width: 240px; }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; } }

/* Loại hình lưu trú */
.types { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.type { display: block; }
.type-art { position: relative; aspect-ratio: 4 / 3; border-radius: var(--r-md); overflow: hidden; margin-bottom: 14px; }
.type-art svg { position: absolute; inset: 0; width: 100%; height: 100%; transition: transform .4s var(--ease); }
.type:hover .type-art svg { transform: scale(1.03); }
.type h3 { font-size: 17px; letter-spacing: -.01em; }
.type p { font-size: 14px; color: var(--muted); margin-top: 4px; }
@media (max-width: 960px) { .types { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .types { grid-template-columns: 1fr; } }

/* Khối chia đôi chữ / minh hoạ */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; align-items: center; }
.split + .split { margin-top: 120px; }
.split.rev > :first-child { order: 2; }
.split .h-section { margin: 12px 0 16px; }
.split .lead { margin-bottom: 24px; }
.checks { display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks li svg { flex: none; width: 22px; height: 22px; padding: 3px; margin-top: 1px; border-radius: 50%; background: var(--teal-soft); color: var(--teal-ink); stroke-width: 2.5; }
@media (max-width: 960px) {
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split.rev > :first-child { order: 0; }
  .split + .split { margin-top: 88px; }
}

/* ---------- Hỏi đáp ---------- */
.faq { display: grid; gap: 12px; }
.faq details { border: 1px solid var(--line); border-radius: var(--r-md); background: var(--bg); transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease); }
.faq details[open] { border-color: var(--line-2); box-shadow: var(--sh-md); }
.faq summary { list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-weight: 600; font-size: 17px; cursor: pointer; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ''; flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23222' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 6v12M6 12h12'/%3E%3C/svg%3E") center / 14px no-repeat; transition: transform var(--t) var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .ans { padding: 0 24px 22px; color: var(--muted); }

/* ---------- Kêu gọi cuối trang ---------- */
.cta-band { position: relative; overflow: hidden; border-radius: var(--r-xl); background: var(--night); color: #F4F4F4; padding: 80px 64px; display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; }
.cta-band h2 { font-size: clamp(28px, 3.4vw, 42px); letter-spacing: -.025em; margin-bottom: 14px; }
.cta-band p { color: #BDBDBD; font-size: 18px; max-width: 560px; }
.cta-band .btns { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-band .btn-secondary { background: transparent; color: #fff; border-color: #4A4A4C; }
.cta-band .btn-secondary:hover { border-color: #fff; }
.cta-tiles { position: absolute; right: -40px; top: -40px; display: grid; grid-template-columns: repeat(2, 120px); gap: 16px; opacity: .14; pointer-events: none; }
.cta-tiles i { width: 120px; height: 120px; border-radius: 20px; background: var(--teal); }
.cta-tiles i.p { background: var(--pink); }
@media (max-width: 860px) { .cta-band { grid-template-columns: 1fr; padding: 56px 28px; } }

/* ---------- Chân trang ---------- */
.foot { padding: 72px 0 40px; background: var(--paper); border-top: 1px solid var(--line); font-size: 15px; }
.foot-top { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; padding-bottom: 48px; border-bottom: 1px solid var(--line-2); }
.foot-top p.tagline { color: var(--muted); margin-top: 14px; max-width: 300px; }
.foot h4 { font-size: 14px; letter-spacing: 0; margin-bottom: 16px; }
.foot ul { display: grid; gap: 10px; }
.foot ul a { color: var(--muted); transition: color var(--t); }
.foot ul a:hover { color: var(--ink); }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 28px; color: var(--muted); font-size: 14px; }
@media (max-width: 860px) { .foot-top { grid-template-columns: 1fr 1fr; } .foot-top > :first-child { grid-column: 1 / -1; } }

/* ---------- Trang sản phẩm ---------- */
.p-hero { padding: 64px 0 96px; }
.p-hero .badge-row { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.p-hero .badge-row b { font-size: 18px; }
.p-hero .badge-row small { display: block; font-size: 14px; color: var(--muted); }
.crumbs { display: flex; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 28px; }
.crumbs a:hover { color: var(--ink); }
.soon-list { display: grid; gap: 12px; }
.soon-item { display: flex; gap: 16px; align-items: flex-start; padding: 20px; border-radius: var(--r-md); border: 1px dashed var(--line-2); background: var(--bg); }
.soon-item h3 { font-size: 16px; letter-spacing: -.01em; margin-bottom: 4px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.soon-item p { font-size: 14px; color: var(--muted); }
.others { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.others .card { padding: 24px; }
.others .card b { font-size: 18px; margin-top: 14px; }
.others .card > span:last-child { color: var(--muted); font-size: 15px; margin-top: 6px; }
@media (max-width: 860px) { .others { grid-template-columns: 1fr; } }

/* Sơ đồ phòng sống (kéo booking vào phòng) */
.live-map { position: relative; }
.live-map .tl-row { grid-template-columns: 72px 1fr; }
.live-map .tl-head { grid-template-columns: 72px 1fr; }
.live-map .trk { height: 38px; }
.live-map .bk { font-size: 12px; }
.cursor { position: absolute; left: 0; top: 0; z-index: 3; pointer-events: none; visibility: hidden; }
.price-why { display: grid; gap: 8px; font-size: 14px; }
.price-why p { display: flex; justify-content: space-between; gap: 12px; padding: 10px 14px; border-radius: var(--r-sm); background: var(--paper); }
.price-why p.sum { background: var(--ink); color: #fff; font-weight: 700; }
.price-why a { color: var(--coral-ink); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* Vòng kết nối OTA */
.orbit { position: relative; width: 100%; max-width: 520px; aspect-ratio: 1; margin: 0 auto 48px; }
.orbit svg.lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.orbit .ring { fill: none; stroke: var(--line-2); stroke-dasharray: 4 6; }
.orbit .ota-line { stroke: var(--line-2); stroke-width: 1.5; }
.orbit .pulse.out { fill: var(--teal); }
.orbit .pulse.in { fill: var(--coral); }
.hub { position: absolute; left: 50%; top: 50%; width: 132px; height: 132px; margin: -66px 0 0 -66px; border-radius: 50%; background: var(--bg); border: 1px solid var(--line); box-shadow: var(--sh-lg); display: grid; place-items: center; align-content: center; gap: 10px; }
.hub .wordmark { font-size: 12px; }
.ota-node { position: absolute; transform: translate(-50%, -50%); }
.ota-chip { display: inline-flex; align-items: center; height: 40px; padding: 0 16px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); box-shadow: var(--sh-md); font-weight: 700; font-size: 14px; white-space: nowrap; transition: border-color var(--t); }
.ota-chip.hit { border-color: var(--coral); }
.ota-chip em { font-style: normal; font-weight: 500; color: var(--muted); }
.sync-label { position: absolute; left: 50%; bottom: -44px; transform: translateX(-50%); display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; background: var(--ink); color: #fff; font-size: 13px; white-space: nowrap; }
.sync-label i { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }
@media (max-width: 480px) { .ota-chip { height: 32px; padding: 0 10px; font-size: 12px; } .hub { width: 104px; height: 104px; margin: -52px 0 0 -52px; } .sync-label { font-size: 12px; } }

/* Hoá đơn điện tử: folio -> hoá đơn */
.flow { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; }
.doc { padding: 18px; border-radius: var(--r-md); background: var(--bg); border: 1px solid var(--line); box-shadow: var(--sh-md); font-size: 13px; }
.doc h4 { font-size: 14px; letter-spacing: 0; margin-bottom: 10px; display: flex; justify-content: space-between; gap: 8px; }
.doc p { display: flex; justify-content: space-between; gap: 8px; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.doc p:last-of-type { border: 0; font-weight: 700; }
.doc .stamp { display: inline-flex; margin-top: 10px; padding: 4px 10px; border-radius: 999px; background: #E8F5E9; color: #1B6E1F; font-weight: 700; font-size: 12px; }
.flow-arrow { width: 44px; height: 44px; border-radius: 50%; background: var(--coral-btn); color: #fff; display: grid; place-items: center; }
.flow-arrow svg { width: 20px; height: 20px; }
@media (max-width: 560px) { .flow { grid-template-columns: 1fr; } .flow-arrow { margin: 0 auto; transform: rotate(90deg); } }

/* Hạng khách CRM */
.tiers { display: grid; gap: 10px; }
.tier { display: grid; grid-template-columns: 44px 1fr auto; gap: 14px; align-items: center; padding: 12px 16px; border-radius: var(--r-md); background: var(--bg); border: 1px solid var(--line); }
.tier .av { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; }
.tier b { display: block; font-size: 15px; }
.tier div > span { font-size: 13px; color: var(--muted); }
.bar-track { height: 6px; border-radius: 6px; background: var(--paper); overflow: hidden; margin-top: 6px; }
.bar-fill { height: 100%; border-radius: 6px; background: var(--amber); transform-origin: left; }

/* Chat trợ lý */
.chat { display: grid; gap: 12px; padding: 18px; min-height: 360px; align-content: start; }
.msg { max-width: 86%; padding: 12px 16px; border-radius: 16px; font-size: 14px; line-height: 1.55; }
.msg.me { justify-self: end; background: var(--ink); color: #fff; border-bottom-right-radius: 4px; }
.msg.bot { background: var(--paper); border-bottom-left-radius: 4px; }
.msg.bot b { color: var(--ink); }
.msg .mini-bars { display: grid; gap: 6px; margin: 10px 0 4px; }
.msg .mini-bars p { display: grid; grid-template-columns: 84px 1fr 52px; gap: 8px; align-items: center; font-size: 12px; }
.msg .mini-bars i { height: 8px; border-radius: 4px; background: var(--teal); transform-origin: left; }
.typing { display: inline-flex; gap: 4px; padding: 14px 16px; border-radius: 16px; background: var(--paper); justify-self: start; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: #A0A0A0; }
.chat-input { display: flex; align-items: center; gap: 10px; margin: 0 18px 18px; padding: 10px 10px 10px 16px; border: 1px solid var(--line-2); border-radius: 999px; font-size: 14px; color: var(--muted); }
.chat-input span { margin-left: auto; width: 32px; height: 32px; border-radius: 50%; background: var(--coral-btn); display: grid; place-items: center; color: #fff; }
.chat-input svg { width: 16px; height: 16px; }

/* ---------- Bảng giá ---------- */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; align-items: stretch; }
.plan { display: flex; flex-direction: column; padding: 28px 24px; border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line); }
.plan.featured { border: 2px solid var(--ink); box-shadow: var(--sh-lg); position: relative; }
.plan .ribbon { position: absolute; top: -14px; left: 24px; padding: 4px 12px; border-radius: 999px; background: var(--coral-btn); color: #fff; font-size: 12px; font-weight: 700; }
.plan h3 { font-size: 20px; letter-spacing: -.01em; }
.plan .for { font-size: 14px; color: var(--muted); margin: 6px 0 20px; min-height: 44px; }
.plan .price { font-size: 28px; font-weight: 800; letter-spacing: -.02em; }
.plan .price small { display: block; font-size: 13px; font-weight: 500; color: var(--muted); letter-spacing: 0; margin-top: 2px; }
.plan .btn { margin: 22px 0; width: 100%; }
.plan ul { display: grid; gap: 10px; font-size: 14px; }
.plan li { display: flex; gap: 10px; align-items: flex-start; }
.plan li svg { flex: none; width: 18px; height: 18px; margin-top: 2px; color: var(--teal-ink); }
.plan li.soon { color: var(--muted); }
.plan li.soon svg { color: #B0B0B0; }
@media (max-width: 1100px) { .plans { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; } }
@media (max-width: 600px) { .plans { grid-template-columns: 1fr; } }
.cmp-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--bg); }
.cmp { width: 100%; min-width: 720px; border-collapse: collapse; font-size: 15px; }
.cmp th, .cmp td { padding: 14px 18px; text-align: center; border-bottom: 1px solid var(--line); }
.cmp th:first-child, .cmp td:first-child { text-align: left; }
.cmp thead th { position: sticky; top: 0; background: var(--bg); font-size: 15px; }
.cmp tr.grp td { background: var(--paper); font-weight: 700; font-size: 14px; }
.cmp td small { display: block; font-size: 13px; color: var(--muted); }
.cmp .y { color: var(--teal-ink); font-weight: 700; }
.cmp .n { color: #B0B0B0; }
.cmp tbody tr:last-child td { border-bottom: 0; }
.note { font-size: 14px; color: var(--muted); }

/* ---------- Demo ---------- */
.tour { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 40px; align-items: start; }
.tour-tabs { display: grid; gap: 6px; }
.tour-tab { position: relative; display: block; width: 100%; text-align: left; padding: 16px 18px; border-radius: var(--r-md); border: 1px solid transparent; background: none; overflow: hidden; transition: background var(--t) var(--ease), border-color var(--t) var(--ease); }
.tour-tab:hover { background: var(--paper); }
.tour-tab[aria-selected="true"] { background: var(--bg); border-color: var(--line); box-shadow: var(--sh-md); }
.tour-tab b { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.tour-tab > span { display: block; font-size: 14px; color: var(--muted); margin-top: 4px; padding-left: 46px; }
.tour-tab .bar { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--coral); transform: scaleX(0); transform-origin: left; }
.tour-stage { position: sticky; top: calc(var(--nav-h) + 24px); }
.tour-panel { display: none; }
.tour-panel.on { display: block; }
.tour-note { margin-top: 16px; font-size: 14px; color: var(--muted); text-align: center; }
@media (max-width: 960px) {
  .tour { grid-template-columns: 1fr; }
  .tour-tabs { grid-template-columns: repeat(3, 1fr); }
  .tour-tab > span { display: none; }
  .tour-stage { position: static; }
}
@media (max-width: 560px) { .tour-tabs { grid-template-columns: repeat(2, 1fr); } .tour-tab { padding: 12px; } .tour-tab b { font-size: 14px; } }
.mini-folio { display: grid; gap: 6px; font-size: 13px; margin-bottom: 14px; }
.mini-folio p { display: flex; justify-content: space-between; gap: 8px; padding: 9px 12px; border-radius: var(--r-sm); background: var(--paper); }
.mini-folio p.total { background: var(--ink); color: #fff; font-weight: 700; }
.mini-folio p.rev { color: var(--muted); text-decoration: line-through; }
.hk { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.hk div { padding: 12px; border-radius: var(--r-sm); border: 1px solid var(--line); font-size: 13px; }
.hk b { display: block; font-size: 16px; }
.hk .st { display: inline-block; margin-top: 6px; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.st.dirty { background: var(--coral-soft); color: var(--coral-ink); }
.st.clean { background: #E8F5E9; color: #1B6E1F; }
.st.doing { background: var(--amber-soft); color: var(--amber-ink); }

/* ---------- Tài liệu ---------- */
.docs-search { position: relative; max-width: 640px; margin: 32px auto 0; }
.docs-search input { width: 100%; height: 64px; padding: 0 24px 0 56px; border-radius: 999px; border: 1px solid var(--line-2); font: inherit; font-size: 17px; background: var(--bg); box-shadow: var(--sh-md); transition: box-shadow var(--t) var(--ease), border-color var(--t) var(--ease); }
.docs-search input:focus { outline: none; border-color: var(--ink); box-shadow: var(--sh-lg); }
.docs-search svg { position: absolute; left: 22px; top: 50%; width: 20px; height: 20px; margin-top: -10px; color: var(--muted); }
.cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cat { display: flex; gap: 16px; align-items: flex-start; padding: 24px; text-align: left; background: var(--bg); border: 1px solid var(--line); border-radius: var(--r-lg); transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.cat:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); }
.cat b { display: block; font-size: 17px; }
.cat > span:last-child > span { display: block; font-size: 14px; color: var(--muted); margin-top: 4px; }
.cat em { display: block; font-style: normal; font-size: 13px; color: var(--teal-ink); font-weight: 600; margin-top: 10px; }
@media (max-width: 960px) { .cats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cats { grid-template-columns: 1fr; } }
.doc-list { display: grid; gap: 8px; }
.doc-link { display: block; width: 100%; text-align: left; padding: 16px 20px; border-radius: var(--r-md); background: var(--bg); border: 1px solid var(--line); transition: border-color var(--t), box-shadow var(--t); }
.doc-link:hover { border-color: var(--line-2); box-shadow: var(--sh-md); }
.doc-link b { display: block; font-size: 16px; }
.doc-link span { display: block; font-size: 14px; color: var(--muted); margin-top: 2px; }
.docs-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; align-items: start; }
.docs-side { position: sticky; top: calc(var(--nav-h) + 24px); display: grid; gap: 2px; max-height: calc(100vh - var(--nav-h) - 48px); overflow-y: auto; }
.docs-side button { text-align: left; padding: 8px 12px; border-radius: var(--r-sm); border: 0; background: none; font-size: 14px; color: var(--ink-2); }
.docs-side button:hover { background: var(--paper); }
.docs-side button.on { background: var(--coral-soft); color: var(--coral-ink); font-weight: 600; }
.docs-side p { padding: 16px 12px 6px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
@media (max-width: 960px) { .docs-layout { grid-template-columns: 1fr; } .docs-side { display: none; } }
.article { max-width: 760px; font-size: 16px; line-height: 1.75; }
.article h1 { font-size: clamp(28px, 3vw, 36px); margin-bottom: 20px; }
.article h2 { font-size: 22px; margin: 36px 0 12px; }
.article h3 { font-size: 18px; margin: 28px 0 8px; }
.article p { margin: 0 0 14px; }
.article ul, .article ol { margin: 0 0 16px; padding-left: 22px; }
.article ul { list-style: disc; }
.article ol { list-style: decimal; }
.article li { margin: 4px 0; }
.article a { color: var(--coral-ink); text-decoration: underline; text-underline-offset: 3px; }
.article code { padding: 2px 6px; border-radius: 6px; background: var(--paper); font-size: .9em; }
.article blockquote, .article .callout { margin: 0 0 16px; padding: 14px 18px; border-radius: var(--r-md); background: var(--teal-soft); }
.article table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 14px; display: block; overflow-x: auto; }
.article th, .article td { padding: 8px 12px; border: 1px solid var(--line); text-align: left; }
.article hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }
.back { display: inline-flex; align-items: center; gap: 6px; margin-bottom: 20px; font-size: 14px; font-weight: 600; color: var(--muted); background: none; border: 0; padding: 0; }
.back:hover { color: var(--ink); }
.empty { padding: 48px 0; text-align: center; color: var(--muted); }

/* ---------- Trạng thái chờ chuyển động (chỉ khi GSAP đã sẵn sàng; thiếu GSAP / giảm chuyển động thì hiện hết) ---------- */
.js [data-reveal], .js [data-stagger] > *, .js [data-hero] { visibility: hidden; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

/* ---------- Nỗi đau → cách KeyStay xử lý ---------- */
.pains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pain { display: flex; flex-direction: column; border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line); overflow: hidden; }
.pain .q { padding: 22px 24px 18px; font-size: 17px; font-weight: 700; line-height: 1.4; letter-spacing: -.01em; }
.pain .q::before { content: '“'; display: block; font-size: 40px; line-height: .6; color: var(--coral); margin-bottom: 8px; }
.pain .a { margin-top: auto; padding: 16px 24px 20px; background: var(--teal-soft); font-size: 15px; color: #164B47; }
.pain .a b { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--teal-ink); margin-bottom: 4px; }
@media (max-width: 1024px) { .pains { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .pains { grid-template-columns: 1fr; } }

/* ---------- Điểm khác biệt (USP) ---------- */
.usps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.usp { display: grid; grid-template-columns: auto 1fr; gap: 20px; padding: 28px; border-radius: var(--r-lg); background: var(--bg); border: 1px solid var(--line); }
.usp .num { font-size: 15px; font-weight: 800; color: var(--coral-ink); width: 44px; height: 44px; border-radius: 50%; background: var(--coral-soft); display: grid; place-items: center; }
.usp h3 { font-size: 20px; letter-spacing: -.015em; margin-bottom: 8px; }
.usp p { color: var(--muted); font-size: 15px; }
.usp .proof { margin-top: 12px; font-size: 14px; color: var(--ink-2); padding-left: 12px; border-left: 3px solid var(--teal); border-radius: 0; }
@media (max-width: 860px) { .usps { grid-template-columns: 1fr; } .usp { padding: 22px; } }

/* ---------- KeyAgent: điện thoại + quy trình ---------- */
.phone { width: 100%; max-width: 360px; margin: 0 auto; border-radius: 36px; background: #1B1B1D; padding: 12px; box-shadow: var(--sh-xl); }
.phone-in { border-radius: 26px; background: #F4F4F5; overflow: hidden; min-height: 540px; display: flex; flex-direction: column; }
.phone-top { display: flex; align-items: center; gap: 10px; padding: 18px 16px 12px; background: var(--bg); border-bottom: 1px solid var(--line); font-size: 14px; }
.phone-top b { display: block; font-size: 15px; }
.phone-top small { color: var(--muted); font-size: 12px; }
.phone-feed { display: grid; gap: 10px; padding: 12px; align-content: start; }
.card-msg { padding: 12px 14px; border-radius: 16px; background: var(--bg); border: 1px solid var(--line); font-size: 13px; line-height: 1.5; }
.card-msg .hd { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 6px; }
.card-msg .hd i { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }
.card-msg.alert .hd i { background: var(--coral); }
.card-msg b.big { font-size: 15px; }
.card-msg ul { margin: 6px 0 0; display: grid; gap: 4px; }
.card-msg li { padding-left: 14px; position: relative; }
.card-msg li::before { content: ''; position: absolute; left: 2px; top: 8px; width: 5px; height: 5px; border-radius: 50%; background: var(--line-2); }
.opts { display: grid; gap: 6px; margin-top: 8px; }
.opt { display: flex; gap: 8px; align-items: flex-start; padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line-2); background: var(--bg); font-size: 12.5px; }
.opt em { flex: none; font-style: normal; font-weight: 800; width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center; background: var(--paper); font-size: 11px; }
.opt.pick { border-color: var(--ink); box-shadow: 0 0 0 1px var(--ink); }
.opt.pick em { background: var(--ink); color: #fff; }
.done-chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px; background: #E8F5E9; color: #1B6E1F; font-size: 12px; font-weight: 700; }
.agent-flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; counter-reset: af; }
.af { position: relative; padding: 20px 16px; border-radius: var(--r-md); background: var(--bg); border: 1px solid var(--line); }
.af::before { counter-increment: af; content: counter(af); display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: #fff; font-size: 13px; font-weight: 700; margin-bottom: 12px; }
.af h3 { font-size: 16px; letter-spacing: -.01em; margin-bottom: 6px; }
.af p { font-size: 13.5px; color: var(--muted); }
.af.you { border-color: var(--coral); background: var(--coral-soft); }
.af.you::before { background: var(--coral-btn); }
@media (max-width: 1100px) { .agent-flow { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .agent-flow { grid-template-columns: 1fr 1fr; } }
.status-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.status-col { padding: 28px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--bg); }
.status-col h3 { display: flex; align-items: center; gap: 10px; font-size: 18px; margin-bottom: 16px; }
.status-col.next { border-style: dashed; background: transparent; }
@media (max-width: 860px) { .status-cols { grid-template-columns: 1fr; } }

/* ---------- Demo: từng nghiệp vụ, từng bước ---------- */
.stepper { display: grid; gap: 14px; }
.st-nav { display: flex; flex-wrap: wrap; gap: 6px; }
.st-nav button { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px 8px 8px; border-radius: 999px; border: 1px solid var(--line-2); background: var(--bg); font-size: 13px; font-weight: 600; color: var(--ink-2); transition: background var(--t), border-color var(--t), color var(--t); }
.st-nav button span { display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--paper); font-size: 12px; }
.st-nav button[aria-current="step"] { border-color: var(--ink); color: var(--ink); }
.st-nav button[aria-current="step"] span { background: var(--coral-btn); color: #fff; }
.st-frame { display: none; }
.st-frame.on { display: block; }
.st-cap { margin-top: 12px; padding: 14px 16px; border-radius: var(--r-md); background: var(--paper); font-size: 15px; }
.st-cap b { color: var(--ink); }
.tag.dev { background: var(--amber-soft); color: var(--amber-ink); }
.mini-phone { max-width: 340px; margin: 0 auto; }
.mini-phone .phone-in { min-height: 0; }
.plan li.grp { display: block; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); }
.plan li.grp:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.plan ul { gap: 8px; }

/* ---------- Thư viện ảnh giao diện tính năng (screens.js) ---------- */
.shot { margin: 0; display: flex; flex-direction: column; gap: 16px; }
.shot-frame { position: relative; border-radius: var(--r-lg); padding: 28px; background: linear-gradient(140deg, var(--teal-soft), #FFF6FA 55%, var(--amber-soft)); overflow: hidden; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.shot-frame::after { content: ''; position: absolute; inset: 0; border-radius: inherit; box-shadow: inset 0 0 0 1px rgba(34, 34, 34, .05); pointer-events: none; }
.shot:nth-child(3n+2) .shot-frame { background: linear-gradient(140deg, #FFF0F0, #FFF8EC 60%, var(--teal-soft)); }
.shot:nth-child(3n) .shot-frame { background: linear-gradient(140deg, var(--amber-soft), #F2FAF9 60%, var(--pink-soft)); }
.shot-frame .window { box-shadow: var(--sh-lg); }
.shot figcaption b { display: block; font-size: 17px; letter-spacing: -.01em; }
.shot figcaption span { display: block; font-size: 14px; color: var(--muted); margin-top: 4px; }
.shot-phone { max-width: 300px; margin: 0 auto; border-radius: 30px; padding: 9px; }
.shot-phone .phone-in { min-height: 0; border-radius: 22px; }
.shots-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px 32px; }
.shots-grid.three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 1100px) { .shots-grid.three { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) { .shots-grid, .shots-grid.three { grid-template-columns: 1fr; gap: 32px; } .shot-frame { padding: 16px; } }

/* Trượt ngang (trang chủ): máy tính ghim + cuộn ngang; điện thoại vuốt ngang */
.hgal { padding: 96px 0 72px; background: var(--night); color: #F4F4F4; overflow: hidden; }
.hgal .eyebrow { color: #FF8A8F; }
.hgal .h-section { color: #fff; }
.hgal .lead { color: #BDBDBD; }
.hgal-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
.hgal-head .sec-head { margin-bottom: 0; }
.hgal-count { font-size: 14px; color: #9A9A9A; white-space: nowrap; }
.hgal-count b { color: #fff; font-size: 28px; font-variant-numeric: tabular-nums; }
.hgal-track { display: flex; gap: 32px; width: max-content; padding: 0 var(--gutter); }
.hgal .shot { width: min(560px, 82vw); flex: none; }
.hgal .shot figcaption span { color: #A8A8A8; }
.hgal .shot:nth-child(n) .shot-frame { background: linear-gradient(150deg, #2A2A2E, #222226); }
.hgal .shot-frame::after { box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .06); }
.hgal-bar { height: 3px; margin: 36px var(--gutter) 0; border-radius: 3px; background: #333; overflow: hidden; }
.hgal-bar i { display: block; height: 100%; background: var(--coral); transform-origin: left; transform: scaleX(0); }
@media (max-width: 960px), (max-height: 639px) {
  .hgal-view { overflow-x: auto; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .hgal-view::-webkit-scrollbar { display: none; }
  .hgal .shot { scroll-snap-align: center; }
  .hgal-bar, .hgal-count { display: none; }
  .hgal-head { display: block; }
}

/* Biểu đồ, lịch giá, hồ sơ, hộp thư, bảng công trong ảnh */
.chart { position: relative; height: 110px; margin: 4px 0 14px; }
.chart svg { width: 100%; height: 100%; display: block; }
.chart .grid line { stroke: var(--line); stroke-width: 1; }
.chart .area { fill: rgba(79, 195, 190, .14); }
.chart .line { fill: none; stroke: var(--teal-ink); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.bars { display: grid; gap: 8px; font-size: 12px; }
.bars p { display: grid; grid-template-columns: 84px 1fr 40px; gap: 10px; align-items: center; }
.bars i { display: block; height: 10px; width: var(--v); border-radius: 5px; background: var(--teal); transform-origin: left; }
.bars b { text-align: right; }
.rate { display: grid; gap: 4px; font-size: 12px; }
.rate p { display: grid; grid-template-columns: 70px repeat(7, 1fr); gap: 4px; }
.rate span { padding: 7px 2px; text-align: center; border-radius: 6px; background: var(--paper); font-variant-numeric: tabular-nums; }
.rate span:first-child { text-align: left; background: none; font-weight: 600; color: var(--ink-2); padding-left: 0; }
.rate p.h span { background: none; color: var(--muted); font-weight: 600; }
.rate span.up { background: var(--amber-soft); color: var(--amber-ink); font-weight: 700; }
.rate span.off { background: var(--coral-soft); color: var(--coral-ink); font-weight: 700; }
.rate span.min { background: var(--teal-soft); color: var(--teal-ink); font-weight: 700; font-size: 10px; }
.profile { display: grid; grid-template-columns: 44px 1fr auto; gap: 12px; align-items: center; margin-bottom: 12px; }
.profile .av { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; }
.profile b { display: block; }
.profile > div > span { font-size: 12px; color: var(--muted); }
.profile .pts { text-align: right; }
.profile .pts b { font-size: 20px; color: var(--amber-ink); }
.inbox { display: grid; gap: 6px; font-size: 13px; }
.inbox p { display: grid; grid-template-columns: 40px 1fr auto; gap: 10px; align-items: center; padding: 10px 12px; border-radius: var(--r-sm); background: var(--paper); }
.inbox p > span:nth-child(2) { color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.inbox b { display: block; color: var(--ink); }
.inbox em { font-style: normal; font-size: 11px; color: var(--muted); }
.ch { display: grid; place-items: center; height: 26px; border-radius: 8px; font-size: 10px; font-weight: 800; color: #fff; }
.ch.zalo { background: #0068FF; }
.ch.fb { background: #1877F2; }
.ch.ota { background: var(--amber); color: #4A3200; }
.ch.call { background: var(--teal-ink); }
.sheet { display: grid; gap: 4px; font-size: 12px; }
.sheet p { display: grid; grid-template-columns: 96px repeat(5, 1fr); gap: 4px; }
.sheet span { padding: 8px 2px; text-align: center; border-radius: 6px; font-weight: 700; }
.sheet span:first-child { text-align: left; font-weight: 600; color: var(--ink-2); padding-left: 0; }
.sheet p.h span { color: var(--muted); }
.sheet .ok { background: #E8F5E9; color: #1B6E1F; }
.sheet .late { background: var(--amber-soft); color: var(--amber-ink); }
.sheet .miss { background: var(--coral-soft); color: var(--coral-ink); }
.sheet .off { background: var(--paper); color: var(--muted); }

/* ---------- Hiệu ứng chung thêm ---------- */
.scroll-progress { position: fixed; left: 0; right: 0; top: 0; height: 3px; z-index: 60; background: linear-gradient(90deg, var(--teal), var(--coral), var(--pink)); transform-origin: left; transform: scaleX(0); pointer-events: none; }
.hero { isolation: isolate; }
.hero-deco { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.hero-deco i { position: absolute; border-radius: 14px; background: var(--teal); opacity: .09; }
.hero-deco i.p { background: var(--pink); opacity: .1; }
.hero-deco i.a { background: var(--amber); opacity: .1; }
.w { display: inline-block; overflow: hidden; vertical-align: top; padding: .12em 0 .14em; margin: -.12em 0 -.14em; }
.w > span { display: inline-block; }
.shots-grid .shot-frame { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.shots-grid > .shot { min-width: 0; }
.rate p { grid-template-columns: 64px repeat(7, minmax(0, 1fr)); }
.sheet p { grid-template-columns: 88px repeat(5, minmax(0, 1fr)); }
@media (max-width: 480px) {
  .rate, .sheet { font-size: 10px; }
  .rate p { grid-template-columns: 48px repeat(7, minmax(0, 1fr)); gap: 2px; }
  .rate span { padding: 6px 0; }
  .rate span.min { font-size: 8px; }
  .sheet p { grid-template-columns: 70px repeat(5, minmax(0, 1fr)); gap: 2px; }
}