/* ==========================================================================
   Tủ Mây — design system (v2.0)
   Implements Foundation Sheet + Component Sheet tokens verbatim. No new design.
   ========================================================================== */

:root{
  /* colors (A2) */
  --porcelain:#F7F6F2;   /* page bg */
  --paper:#FFFFFF;       /* cards / surfaces */
  --ink:#161E2E;         /* primary text */
  --ink-soft:#49536A;    /* secondary text */
  --mute:#8A93A6;        /* caption / mute */
  --border:#E4E2DA;      /* 1px hairline */
  --jade:#0E6B54;        /* primary / CTA */
  --jade-tint:#E4F4ED;   /* accent bg */
  --jade-deep:#07473A;   /* hover primary */
  --silk:#B03A62;        /* sparing */
  --silk-tint:#FAECF1;   /* pain cards / quote */
  --gold:#B08D3E;        /* fine details */
  --amber:#96600F;       /* system state */
  --red:#A32D2D;         /* system error */
  --zalo:#0068FF;

  --radius-card:16px;
  --radius-ctrl:12px;
  --shadow-header:0 1px 0 rgba(22,30,46,.06);
  --maxw:1160px;
  --ease:cubic-bezier(.2,.6,.2,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--porcelain);color:var(--ink);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.7;font-weight:400;-webkit-font-smoothing:antialiased;
}
a{color:inherit}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 2px var(--paper),0 0 0 4px var(--jade);border-radius:6px}

/* ---------- layout ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
@media(max-width:767px){.container{padding:0 16px}}
.section{padding:64px 0}
@media(min-width:1100px){.section{padding:96px 0}}
.band-paper{background:var(--paper);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.center{text-align:center}
.measure{max-width:640px;margin-left:auto;margin-right:auto}

/* ---------- typography ---------- */
.display{font-family:'Fraunces',Georgia,serif}
.h1{font-family:'Fraunces',serif;font-weight:700;font-size:34px;line-height:1.15;letter-spacing:-.01em;margin:0}
.h2{font-family:'Fraunces',serif;font-weight:600;font-size:26px;line-height:1.15;margin:0}
.h3{font-weight:600;font-size:19px;line-height:1.15;margin:0}
@media(min-width:1100px){
  .h1{font-size:56px}
  .h2{font-size:36px}
  .h3{font-size:22px}
}
.lead{font-size:16px;line-height:1.7;color:var(--ink-soft)}
.body{font-size:16px;line-height:1.7;color:var(--ink-soft)}
.small{font-size:13px;line-height:1.6;color:var(--ink-soft)}
.caption{font-size:12px;color:var(--mute)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.kicker{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--mute);text-transform:uppercase}
.jade{color:var(--jade)}
.serif-it{font-family:'Fraunces',serif;font-style:italic}
.logo{font-family:'Fraunces',serif;font-weight:600;font-size:24px;color:var(--ink);text-decoration:none;letter-spacing:.005em}
.logo em{color:var(--jade);font-style:italic}

/* ---------- buttons (B1) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 20px;
  border-radius:var(--radius-ctrl);font-size:15px;font-weight:600;border:none;cursor:pointer;
  text-decoration:none;white-space:nowrap;transition:background .12s var(--ease),transform .1s var(--ease),box-shadow .12s var(--ease)}
.btn:active{transform:scale(.98)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-primary{background:var(--jade);color:#fff}
.btn-primary:hover{background:var(--jade-deep)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--porcelain)}
.btn-invert{background:#fff;color:var(--jade)}          /* only in jade CTA band */
.btn-invert:hover{background:#F1EFE8}
.btn-block{width:100%}
.btn-text{font-size:15px;font-weight:600;color:var(--jade);cursor:pointer;text-decoration:none}
.btn-text:hover{text-decoration:underline;text-underline-offset:3px}
.dots{display:inline-flex;gap:5px;align-items:center}
.dots span{width:5px;height:5px;border-radius:999px;background:currentColor;animation:tmDots 1s infinite}
.dots span:nth-child(2){animation-delay:.2s}.dots span:nth-child(3){animation-delay:.4s}
@keyframes tmDots{0%,80%,100%{opacity:.25}40%{opacity:1}}

/* ---------- cards / surfaces ---------- */
.card{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius-card)}
.pill{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600}
.pill-jade{background:var(--jade-tint);color:var(--jade)}
.diamond{color:var(--jade);font-size:10px;flex:none;line-height:1.5}

/* striped porcelain placeholder awaiting real photos (A6) */
.ph{border:1px solid var(--border);border-radius:var(--radius-card);
  background:repeating-linear-gradient(45deg,#EFEDE7 0 14px,#E9E6DE 14px 28px);
  display:flex;align-items:center;justify-content:center;color:var(--mute)}
.ph-note{font-size:11px;color:var(--mute);background:var(--paper);padding:4px 10px;border-radius:999px;border:1px solid var(--border);text-align:center;font-family:ui-monospace,SFMono-Regular,monospace}
.ph-circle{border-radius:999px;background:repeating-linear-gradient(45deg,#EFEDE7 0 12px,#E9E6DE 12px 24px);border:1px solid var(--border);flex:none}

/* ---------- header (A3) ---------- */
.site-header{position:sticky;top:0;z-index:50;height:64px;background:var(--paper);box-shadow:var(--shadow-header);transition:background .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-transparent{background:transparent;box-shadow:none}
@media(min-width:1100px){.site-header{height:72px}}
.site-header .inner{max-width:var(--maxw);margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 24px}
@media(max-width:767px){.site-header .inner{padding:0 16px}}
.nav-links{display:none;align-items:center;gap:32px;font-size:15px;font-weight:500}
.nav-links a{color:var(--ink);text-decoration:none}
.nav-links a.active{color:var(--jade);font-weight:600}
.nav-links a:hover{color:var(--jade)}
.header-right{display:flex;align-items:center;gap:20px}
.lang{font-size:13px;font-weight:600;white-space:nowrap}
.lang .off{color:var(--mute)}
.header-cta{display:none}
.burger{display:inline-flex;background:none;border:none;padding:6px;cursor:pointer;color:var(--ink)}
@media(min-width:1100px){
  .nav-links{display:flex}
  .header-cta{display:inline-flex}
  .burger{display:none}
}
/* mobile sheet */
.sheet{position:fixed;inset:0;z-index:60;display:none}
.sheet.open{display:block}
.sheet-scrim{position:absolute;inset:0;background:rgba(20,26,34,.4)}
.sheet-panel{position:absolute;top:0;right:0;bottom:0;width:min(360px,86vw);background:var(--paper);
  display:flex;flex-direction:column;padding:20px;transform:translateX(100%);transition:transform .24s var(--ease)}
.sheet.open .sheet-panel{transform:translateX(0)}
.sheet-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.sheet-links{display:flex;flex-direction:column;gap:24px;font-size:18px;font-weight:600}
.sheet-links a{color:var(--ink);text-decoration:none}
.sheet-cta{margin-top:auto;padding-top:24px}

/* ---------- footer (A4) ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:64px 0 40px}
.footer-col h4{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--mute);text-transform:uppercase;margin:0 0 16px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-col a{color:var(--ink-soft);text-decoration:none;font-size:14px}
.footer-col a:hover{color:var(--jade)}
.footer-brand .slogan{font-size:15px;color:var(--ink-soft);margin:12px 0 4px}
.footer-brand .slogan-en{font-size:13px;color:var(--mute);font-style:italic}
.footer-contact .zalo-qr{width:96px;height:96px;border-radius:12px;background:repeating-linear-gradient(45deg,#EFEDE7 0 10px,#E9E6DE 10px 20px);border:1px solid var(--border);margin-bottom:8px}
.footer-social{display:flex;gap:14px;margin-top:14px}
.footer-social a{color:var(--ink-soft)}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;font-size:12px;color:var(--mute)}
@media(max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:36px;padding:48px 0 28px}
}

/* ---------- section header ---------- */
.sec-head{display:flex;flex-direction:column;gap:14px;margin-bottom:40px}
.sec-head.center{align-items:center;text-align:center}

/* ---------- TierCard (B2) ---------- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
@media(max-width:900px){.tiers{grid-template-columns:1fr}}
.tier{position:relative;background:var(--paper);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;gap:16px;transition:transform .15s var(--ease)}
@media(min-width:1100px){.tier:hover{transform:translateY(-2px)}}
.tier.anchor{border:2px solid var(--jade)}
.tier .badge{position:absolute;top:-13px;left:16px;height:26px;padding:0 12px;background:var(--jade);color:#fff;border-radius:999px;font-size:12px;font-weight:600;display:inline-flex;align-items:center}
.tier .name{font-family:'Fraunces',serif;font-weight:600;font-size:19px}
.tier .price{display:flex;align-items:baseline;gap:6px}
.tier .price b{font-family:'Fraunces',serif;font-weight:600;font-size:32px}
.tier .price span{font-size:12px;color:var(--mute)}
.tier .feats{display:flex;flex-direction:column;gap:10px;font-size:15px;line-height:1.5}
.tier .feats div{display:flex;gap:10px;align-items:baseline}
.tier .note{font-size:13px;color:var(--mute);font-family:'Fraunces',serif;font-style:italic}
.tier .btn{margin-top:auto}
@media(max-width:900px){.tier.anchor{order:-1}}

/* ---------- StepBlock (B3) ---------- */
.steps{display:flex;align-items:stretch;gap:8px}
.step{flex:1;display:flex;flex-direction:column;gap:10px;text-decoration:none;color:var(--ink);padding:16px;border-radius:var(--radius-ctrl)}
.step:hover{background:var(--porcelain)}
.step .num{font-family:'Fraunces',serif;font-weight:600;font-size:20px;color:var(--gold)}
.step .st-title{font-size:17px;font-weight:600}
.step .st-cap{font-size:13px;color:var(--ink-soft);line-height:1.5}
.step-arrow{display:flex;align-items:center;flex:none;color:var(--mute)}
@media(max-width:767px){
  .steps{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .step{background:var(--paper);border:1px solid var(--border);padding:14px}
  .step-arrow{display:none}
}

/* ---------- TrustBadge (B5) ---------- */
.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;background:var(--porcelain);border-radius:var(--radius-ctrl);padding:24px 20px}
.trust-item{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.trust-item .lbl{font-size:13px;font-weight:600;line-height:1.4}
@media(max-width:767px){.trust-row{grid-template-columns:1fr 1fr}}

/* ---------- Pain cards (silk-tint) ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:767px){.pain-grid{grid-template-columns:1fr}}
.pain-card{background:var(--silk-tint);border-radius:var(--radius-card);padding:28px 24px;display:flex;flex-direction:column;gap:10px}
.pain-card h3{font-size:19px;font-weight:600;line-height:1.3;margin:0}
.pain-card p{margin:0;font-size:15px;color:var(--ink-soft);line-height:1.6}

/* ---------- CustodyTimeline (B6) ---------- */
.timeline-wrap{border:1px solid var(--border);border-radius:var(--radius-card);background:var(--porcelain);padding:32px 16px 24px}
.timeline-h{display:flex}
.tl-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:10px;position:relative;text-align:center;min-width:0}
.tl-dot{width:12px;height:12px;border-radius:999px;flex:none;box-sizing:border-box}
.tl-label{font-size:12px;line-height:1.35}
.tl-hline{position:absolute;top:5px;left:calc(50% + 12px);width:calc(100% - 24px);height:1.5px;border-radius:2px}
/* vertical (mobile) */
.timeline-v{display:none;border:1px solid var(--border);border-radius:var(--radius-card);background:var(--paper);padding:24px 20px}
.tl-row{position:relative;display:flex;gap:14px;align-items:flex-start;padding-bottom:22px}
.tl-vline{position:absolute;left:5.25px;top:18px;height:calc(100% - 22px);width:1.5px}
@media(max-width:1099px){
  .timeline-wrap{display:none}
  .timeline-v{display:block}
}
@keyframes tmPulse{0%{transform:scale(1)}45%{transform:scale(1.28)}100%{transform:scale(1)}}

/* ---------- Accordion (B7) ---------- */
.accordion{max-width:680px}
.acc-item{border-bottom:1px solid var(--border)}
.acc-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 4px;cursor:pointer;width:100%;background:none;border:none;text-align:left;font-size:15px;font-weight:600;color:var(--ink)}
.acc-q svg{flex:none;transition:transform .24s var(--ease);color:var(--ink-soft)}
.acc-item.open .acc-q svg{transform:rotate(180deg)}
.acc-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.acc-a-inner{padding:0 4px 18px;font-size:15px;color:var(--ink-soft);line-height:1.7;max-width:600px}

/* ---------- BlogCard (B8) ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:900px){.blog-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.blog-grid{grid-template-columns:1fr}}
.blog-card{display:flex;flex-direction:column;gap:14px;text-decoration:none;color:var(--ink)}
.blog-cover{aspect-ratio:16/9;border-radius:var(--radius-ctrl);overflow:hidden;border:1px solid var(--border);
  background:repeating-linear-gradient(45deg,#F7F6F2 0 14px,#EEECE5 14px 28px);display:flex;align-items:center;justify-content:center}
.blog-meta{display:flex;align-items:center;gap:10px}
.blog-meta .pill{height:24px;padding:0 10px}
.blog-title{font-family:'Fraunces',serif;font-weight:600;font-size:19px;line-height:1.3;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.blog-excerpt{font-size:13px;color:var(--ink-soft);line-height:1.6;font-style:italic;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- inputs (B9) ---------- */
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field label .req{color:var(--red)}
.input{height:48px;padding:0 14px;border-radius:var(--radius-ctrl);border:1px solid var(--border);background:var(--paper);
  font-family:inherit;font-size:15px;color:var(--ink);width:100%;box-sizing:border-box}
.input::placeholder{color:var(--mute)}
.input:focus{outline:none;border-color:transparent;box-shadow:0 0 0 2px var(--jade)}
select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2349536A' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.field.error .input{border:1.5px solid var(--red);box-shadow:none}
.field .err{display:none;align-items:center;gap:6px;font-size:13px;color:var(--red)}
.field.error .err{display:flex}
.radio-card{display:flex;align-items:center;gap:12px;padding:16px;border-radius:var(--radius-ctrl);border:1px solid var(--border);background:var(--paper);cursor:pointer}
.radio-card .rc-dot{width:18px;height:18px;border-radius:999px;border:1.5px solid var(--mute);flex:none;box-sizing:border-box}
.radio-card.sel{border:2px solid var(--jade);background:var(--jade-tint)}
.radio-card.sel .rc-dot{border:5px solid var(--jade);background:var(--paper)}
.radio-card.sel span{font-weight:600}

/* ---------- CTA band (jade) ---------- */
.cta-band{background:var(--jade)}
.cta-band .container{display:flex;flex-direction:column;gap:16px;align-items:center;text-align:center}
.cta-band .h2{color:#fff}
.cta-band .sub{font-size:16px;color:var(--jade-tint)}

/* ---------- Zalo bubble (A5) ---------- */
.zalo-bubble{position:fixed;bottom:20px;right:20px;z-index:55;width:56px;height:56px;border-radius:999px;
  background:var(--zalo);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,104,255,.35);
  color:#fff;font-size:12px;font-weight:700;text-decoration:none}

/* ---------- hero ---------- */
.hero-grid{display:grid;grid-template-columns:55% 45%;gap:48px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:28px}}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:767px){.hero-cta .btn{width:100%}}

/* ---------- misc utilities ---------- */
.stack{display:flex;flex-direction:column}
.gap8{gap:8px}.gap12{gap:12px}.gap16{gap:16px}.gap24{gap:24px}.gap32{gap:32px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
@media(max-width:900px){.grid2{grid-template-columns:1fr;gap:28px}}
.hidden{display:none}
@media(max-width:767px){
  .facility{grid-template-columns:1fr 1fr!important}
  .team{grid-template-columns:1fr!important;max-width:none!important}
}
/* trust strip: desktop icon+label inline, mobile 2x2 icon-above (matches Home design) */
@media(min-width:1100px){.trust-item{flex-direction:row;align-items:center;gap:14px}}
.table{border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;width:100%}
.table .tr{display:flex;justify-content:space-between;gap:16px;padding:16px 20px;border-top:1px solid var(--border);font-size:15px}
.table .tr:first-child{border-top:none}
.table .tr b{font-weight:600}