/* bantrudian.vn — site.css v1 (Sprint 2, 2026-07-04)
   Hệ Bee's Home làm mềm: kem/trắng chủ đạo, vàng chỉ cho CTA, navy cho heading.
   Chữ vàng trên nền sáng BẮT BUỘC #8a6a00 (chuẩn AA — luật dự án). Mobile-first. */
:root{
  /* ── VISUAL TOKENS (V5.1E design system) — sửa màu/shadow/bo góc CHỈ ở đây ── */
  /* màu nền phân lớp */
  --color-bg-page:#FBF7F0;      /* 1. nền trang (kem ấm) */
  --color-bg-section:#F3ECDF;   /* 2. nền section (kem đậm hơn) */
  --color-surface:#ffffff;      /* 3. card/bảng/form (trắng nổi) */
  --color-footer:#1a2847;       /* 5. footer tối */
  /* màu thương hiệu */
  --color-primary:#1a2847;      /* navy — heading/chữ chính */
  --color-accent:#FFC020;       /* vàng — CHỈ điểm nhấn (NGUỒN DUY NHẤT của màu brand) */
  --color-accent-ink:#8a6a00;   /* vàng đậm — chữ vàng trên nền sáng (AA) */
  --color-accent-soft:color-mix(in srgb,var(--color-accent) 10%,var(--color-surface)); /* wash nền vàng rất nhẹ (pha từ accent) */
  --color-text:#1f1f1f; --color-muted:#5a5a5a; --color-border:#E4E0D6;
  --color-focus:#1a2847;        /* viền focus bàn phím */
  /* shadow (không lạm dụng) */
  --shadow-sm:0 3px 10px rgba(255,192,32,.28);
  --shadow-md:0 8px 20px rgba(26,40,71,.08);
  --shadow-hover:0 12px 28px rgba(26,26,26,.12);
  /* bo góc + chuyển động */
  --radius-sm:8px; --radius-md:14px; --radius-lg:20px;
  --transition-fast:.2s; --transition-normal:.55s; --hover-lift:-3px;
  /* alias tương thích code cũ */
  --gold:var(--color-accent); --gold-d:var(--color-accent-ink); --navy:var(--color-primary); --ink:var(--color-text);
  --warm:var(--color-bg-page); --cream:var(--color-bg-section); --cream-2:#FDFBF6; --line:var(--color-border); --muted:var(--color-muted);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Be Vietnam Pro',system-ui,sans-serif;color:var(--ink);background:var(--warm);line-height:1.72;font-size:16px}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 20px}
img{max-width:100%;height:auto}
h1,h2,h3{font-family:'Fraunces',serif;color:var(--navy);line-height:1.3}
h1{font-size:clamp(1.7rem,4.5vw,2.5rem);margin:.2em 0 .5em}
h2{font-size:clamp(1.3rem,3.2vw,1.7rem);margin:1.6em 0 .6em}
h3{font-size:1.08rem;margin:1.2em 0 .4em}
p{margin:.6em 0}
a{color:var(--gold-d)}
section{padding:52px 0}
@media(min-width:761px){section{padding:72px 0}}
.section-cream{background:var(--cream)}
.center{text-align:center}
.lead{font-size:1.06rem;color:var(--muted)}

/* ── Header ── */
.top-header .wrap{max-width:1200px}
.top-header{position:sticky;top:0;z-index:50;background:rgba(251,247,240,.94);-webkit-backdrop-filter:saturate(160%) blur(10px);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.top-header .bar{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{font-family:'Fraunces',serif;font-weight:700;color:var(--navy);text-decoration:none;font-size:1.22rem;line-height:1.15;letter-spacing:.01em;white-space:nowrap}
.brand small{display:block;font-family:'Be Vietnam Pro',system-ui,sans-serif;font-weight:500;font-size:.68rem;color:var(--muted);letter-spacing:.02em;margin-top:3px;white-space:normal}
@media(max-width:640px){.brand{font-size:1.02rem}.brand small{font-size:.62rem}}
.main-nav{margin-left:auto;display:none;gap:2px}
.main-nav a{color:var(--navy);text-decoration:none;font-size:.9rem;font-weight:600;padding:9px 13px;border-radius:999px;white-space:nowrap;transition:background .18s,color .18s}
.main-nav a:hover{background:var(--cream)}
.main-nav a[aria-current="page"]{background:var(--navy);color:#fff}
.crumbs{font-size:.82rem;color:var(--muted);padding-top:12px;padding-bottom:2px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--gold-d);text-decoration:underline}
.btn-zalo-top{margin-left:auto;background:var(--gold);color:var(--navy);font-weight:700;text-decoration:none;padding:9px 16px;border-radius:999px;font-size:.9rem;white-space:nowrap;box-shadow:0 4px 14px rgba(255,192,32,.35)}
/* hover .btn-zalo-top → fx.css (nguồn hover duy nhất, V5.1G) */
@media(min-width:1040px){
  .main-nav{display:flex}
  .btn-zalo-top{margin-left:8px}
  .menu-toggle{display:none}
}
/* mobile menu = <details> thuần, không JS */
.menu-toggle{margin-left:auto}
.menu-toggle summary{list-style:none;cursor:pointer;padding:10px;font-size:1.3rem;color:var(--navy);line-height:1}
.menu-toggle summary::-webkit-details-marker{display:none}
.menu-toggle[open] .m-panel{display:block}
.m-panel{position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(26,40,71,.08);padding:8px 0 14px}
.m-panel a{display:block;padding:13px 24px;color:var(--navy);text-decoration:none;font-weight:600;min-height:44px}
.m-panel a:active{background:var(--cream)}
@media(min-width:1040px){.menu-toggle{display:none}}

/* ── Hero ── */
.hero{background:linear-gradient(180deg,#F5EAD3 0%,var(--warm) 100%);padding:56px 0 48px}
.hero .eyebrow{color:var(--gold-d);font-weight:700;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase}
.hero p.sub{font-size:1.08rem;color:var(--muted);max-width:560px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ── Buttons (tap ≥44px, chữ ≥15px) ── */
.btn{display:inline-block;text-decoration:none;font-weight:700;font-size:.98rem;padding:13px 24px;border-radius:999px;min-height:44px;text-align:center}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-line{border:1.8px solid var(--navy);color:var(--navy)}
.btn:active{transform:translateY(1px)}
/* hover .btn-gold/.btn-line → fx.css (nguồn hover duy nhất, V5.1G) */

/* ── Cards ── */
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.grid-2{grid-template-columns:1fr 1fr}.grid-4{grid-template-columns:1fr 1fr}}
@media(min-width:900px){.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 2px 10px rgba(26,40,71,.04)}
.section-cream .card{background:var(--cream-2)}
.card .ic{font-size:1.6rem;line-height:1}
.card h3{margin:.5em 0 .3em}
.card p{margin:0;color:var(--muted);font-size:.95rem}
/* hover/active .card (INFORMATION tier B) → fx.css: chỉ viền sáng nhẹ + shadow, KHÔNG nâng (không giả click) */

/* ── Timeline một ngày ── */
.timeline{list-style:none;margin:24px 0 0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:11px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline li{position:relative;padding:0 0 26px 44px}
.timeline li::before{content:"";position:absolute;left:4px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--gold);border:3px solid #fff;box-shadow:0 0 0 1.5px var(--line)}
.timeline .t{font-weight:700;color:var(--gold-d);font-size:.9rem}
.timeline h3{margin:.15em 0 .2em;font-family:'Be Vietnam Pro',sans-serif;font-size:1.02rem}
.timeline p{margin:0;color:var(--muted);font-size:.94rem}

/* ── Pricing ── */
.price-card{background:#fff;border:2px solid var(--gold);border-radius:20px;padding:30px 24px;max-width:460px;margin:24px auto 0;text-align:center;box-shadow:0 10px 28px rgba(26,40,71,.07)}
.price-card .amount{font-family:'Fraunces',serif;font-size:2.1rem;color:var(--navy);font-weight:700}
.price-card .amount small{font-size:1rem;color:var(--muted);font-weight:400}
.price-note{font-size:.9rem;color:var(--muted);margin-top:8px}
.price-points{list-style:none;padding:0;margin:16px 0;text-align:left}
.price-points li{padding:7px 0 7px 26px;position:relative;font-size:.95rem}
.price-points li::before{content:"✓";position:absolute;left:2px;color:var(--gold-d);font-weight:700}

/* ── FAQ accordion (details thuần) ── */
.faq{margin-top:20px}
.faq details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
.faq summary{cursor:pointer;padding:15px 44px 15px 18px;font-weight:600;color:var(--navy);list-style:none;position:relative;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:1.3rem;color:var(--gold-d)}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 18px 16px;color:var(--muted);font-size:.95rem}

/* ── Blog cards ── */
.post-card{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.post-card h3{margin:0 0 6px;font-family:'Be Vietnam Pro',sans-serif;font-size:1rem;color:var(--navy)}
.post-card p{margin:0;color:var(--muted);font-size:.88rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .tag{display:inline-block;font-size:.72rem;font-weight:700;color:var(--gold-d);background:var(--cream);border-radius:999px;padding:3px 10px;margin-bottom:8px}
/* hover .post-card (CLICKABLE tier A) → fx.css (nguồn hover duy nhất, V5.1G) */

/* ── CTA banner ── */
.cta-banner{background:var(--cream);border:1.5px solid var(--gold);border-radius:20px;padding:34px 24px;text-align:center}
.cta-banner h2{margin-top:0}
.cta-banner .hero-ctas{justify-content:center}

/* ── Breadcrumb ── */
.crumbs{font-size:.84rem;color:var(--muted);padding:14px 0 0}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--gold-d)}

/* ── Bảng "phù hợp / chưa cần" ── */
.fit-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:700px){.fit-grid{grid-template-columns:1fr 1fr}}
.fit-col{border-radius:16px;padding:22px;border:1px solid var(--line)}
.fit-col.yes{background:var(--cream-2)}
.fit-col ul{margin:10px 0 0;padding-left:2px;list-style:none}
.fit-col li{padding:6px 0 6px 28px;position:relative;font-size:.95rem}
.fit-col.yes li::before{content:"✓";position:absolute;left:2px;color:var(--gold-d);font-weight:700}
.fit-col.no li::before{content:"○";position:absolute;left:2px;color:var(--muted)}

/* ── Footer ── */
footer.site{background:var(--color-footer);border-top:1px solid var(--line);padding:26px 0 90px;font-size:.92rem;color:#c7cdd9}
footer.site strong{color:#fff}
footer.site a{color:inherit}
@media(min-width:761px){footer.site{padding-bottom:32px}}

/* ── Sticky bottom bar Gọi/Zalo (mobile) ── */
.bh-bottom-bar{position:fixed;left:0;right:0;bottom:0;z-index:60;display:flex;background:#fff;border-top:1px solid var(--line);box-shadow:0 -4px 16px rgba(26,40,71,.1)}
.bh-bottom-bar a{flex:1;text-align:center;padding:13px 8px;font-weight:700;text-decoration:none;font-size:.95rem;min-height:48px}
.bh-bottom-bar .call{color:var(--navy)}
.bh-bottom-bar .zalo{background:var(--gold);color:var(--navy)}
@media(min-width:761px){.bh-bottom-bar{display:none}}