/* ==========================================================================
   GRAND HOME — Landing page Kiến trúc sư
   Grid chuẩn: container 1440px / 12 columns / gutter 24px
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  /* brand */
  --red:#D3111A;
  --red-600:#B60D15;
  --red-700:#9A0A11;
  --red-soft:rgba(211,17,26,.10);

  /* neutrals */
  --ink:#060709;            /* trùng màu nền ảnh sketch của khách */
  --ink-2:#0C0E10;
  --ink-3:#121517;
  --black:#050506;
  --paper:#F8F8F8;
  --white:#FFFFFF;

  /* text */
  --tx:#111417;
  --tx-2:#5B6167;
  --tx-3:#8A9097;
  --tx-inv:#FFFFFF;
  --tx-inv-2:rgba(255,255,255,.66);
  --tx-inv-3:rgba(255,255,255,.44);

  /* lines */
  --ln-light:#E7E7E7;
  --ln-dark:rgba(255,255,255,.12);

  /* grid */
  --maxw:1440px;
  --gut:24px;
  --pad:clamp(18px,4vw,40px);

  /* rhythm */
  --sec-y:clamp(72px,7.6vw,116px);
  --r:6px;

  --shadow-card:0 1px 2px rgba(16,20,24,.04),0 10px 30px -18px rgba(16,20,24,.18);
  --shadow-lift:0 18px 44px -20px rgba(16,20,24,.30);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--tx);
  font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
img{height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:2px}

/* ---------- 3. Grid ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.g12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gut);
}
.span-4{grid-column:span 4}
.span-8{grid-column:span 8}
.span-12{grid-column:1 / -1}

/* sub-grid dùng cho các dải 4 item nằm trong 8 cột (mỗi item = 2 cột) */
.sub-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gut)}
.sub-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gut)}

/* lớp phủ kiểm tra lưới 12 cột — bật/tắt bằng phím G */
.gridguide{
  position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:0;transition:opacity .2s;
}
.gridguide.is-on{opacity:1}
.gridguide .wrap,.gridguide .g12{height:100%}
.gridguide span{background:rgba(211,17,26,.11);border-inline:1px solid rgba(211,17,26,.28)}

/* ---------- 4. Typography ---------- */
.h1,.h2,.h3,.h4{font-family:Montserrat,"Be Vietnam Pro",system-ui,sans-serif;font-weight:800;letter-spacing:-.02em;line-height:1.08}
.h1{font-size:clamp(30px,3.4vw,48px);text-transform:uppercase}
.h2{font-size:clamp(23px,2.32vw,33px);text-transform:uppercase;line-height:1.2}
.h3{font-size:clamp(14.5px,1.12vw,16px);font-weight:800;line-height:1.36;text-transform:uppercase;letter-spacing:-.005em}
.h4{font-size:13.5px;font-weight:800;text-transform:uppercase;letter-spacing:.01em;line-height:1.46}
.lead{font-size:clamp(16px,1.24vw,18.5px);line-height:1.55;font-weight:700}
.p{color:var(--tx-2);font-size:14.5px;line-height:1.85}
.p-sm{color:var(--tx-2);font-size:14.5px;line-height:1.75}
.on-dark .p,.on-dark .p-sm{color:var(--tx-inv-2)}
.red{color:var(--red)}
.nowrap{white-space:nowrap}

/* eyebrow: gạch đỏ + chữ nhỏ in hoa */
.eyebrow{
  display:flex;align-items:center;gap:14px;
  font-size:12px;font-weight:800;letter-spacing:.19em;text-transform:uppercase;color:var(--red);
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--red);flex:none}
.eyebrow--center{justify-content:center}
.eyebrow--center::after{content:"";width:34px;height:2px;background:var(--red);flex:none}

/* ---------- 5. Buttons ---------- */
.btn{
  --bg:var(--red);--bgh:var(--red-600);
  display:inline-flex;align-items:center;justify-content:center;gap:14px;
  min-height:52px;padding:13px 26px;
  background:var(--bg);color:#fff;border:0;border-radius:var(--r);
  font-family:Montserrat,sans-serif;font-size:14px;font-weight:800;letter-spacing:.055em;text-transform:uppercase;
  line-height:1.25;text-align:left;cursor:pointer;
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:hover{background:var(--bgh);transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(211,17,26,.72)}
.btn:active{transform:translateY(0)}
.btn__ico{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1.5px solid rgba(255,255,255,.5);
  display:grid;place-items:center;transition:transform .22s ease;
}
.btn:hover .btn__ico{transform:rotate(45deg)}
.btn__ico svg{width:13px;height:13px}
.btn--block{width:100%;justify-content:center;text-align:center}
.btn--ghost{
  background:transparent;color:#fff;border:1.5px solid var(--red);min-height:44px;padding:10px 20px;font-size:12.5px;
}
.btn--ghost:hover{background:var(--red);box-shadow:none}

/* ---------- 6. Header ---------- */
.hdr{
  position:fixed;inset:0 0 auto;z-index:200;
  background:var(--red);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease;
}
.hdr.is-stuck{background:var(--red-600);border-bottom-color:rgba(0,0,0,.15)}
.hdr__in{display:flex;align-items:center;gap:clamp(18px,2.6vw,44px);min-height:82px}
.hdr__logo img{height:30px;width:auto}
.nav{display:flex;align-items:center;gap:clamp(14px,2vw,34px);margin-inline:auto}
.nav a{
  position:relative;font-family:Montserrat,sans-serif;
  font-size:12.5px;font-weight:700;letter-spacing:.055em;text-transform:uppercase;
  color:rgba(255,255,255,.86);padding:6px 0;transition:color .2s;
}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--red);transition:width .25s ease}
.nav a:hover{color:#fff}
.nav a:hover::after,.nav a.is-active::after{width:100%}
.hdr__cta{flex:none}
.burger{display:none;width:44px;height:44px;border:1px solid var(--ln-dark);background:none;border-radius:var(--r);cursor:pointer;flex-direction:column;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:1.6px;background:#fff;margin:3.4px auto;transition:transform .25s,opacity .25s}
.burger.is-open span:nth-child(1){transform:translateY(8.4px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-8.4px) rotate(-45deg)}

/* ---------- 7. Section shells ---------- */
.sec{position:relative;padding-block:var(--sec-y);overflow:hidden}
.sec--light{background:var(--paper)}
.sec--dark{background:var(--ink);color:#fff}
.sec--black{background:var(--black);color:#fff}
.sec__bg{
  position:absolute;inset:0;pointer-events:none;overflow:hidden;
}
/* nền bản vẽ: đặt gọn ở một góc, tràn nhẹ ra mép như file thiết kế */
.sec__bg img,.fcta__bg img{
  position:absolute;height:auto;max-width:none;
  -webkit-mask-image:radial-gradient(closest-side at 50% 50%,#000 55%,rgba(0,0,0,.45) 82%,transparent 100%);
  mask-image:radial-gradient(closest-side at 50% 50%,#000 55%,rgba(0,0,0,.45) 82%,transparent 100%);
}
.sec__bg img{opacity:.3}
/* PNG lưu nét đậm trên nền trong suốt — nền tối thì đảo màu thành nét sáng */
.sec__bg img.is-invert,.fcta__bg img.is-invert{filter:invert(1)}
/* bản vẽ mặt bằng nền trắng: nhân nền để nền trắng tan vào nền section */
.sec__bg img.sec__bg--plan{
  mix-blend-mode:multiply;opacity:.32;
  top:0;right:-2%;height:100%;width:auto;
}
.sec--dark .sec__bg img,.sec--black .sec__bg img{opacity:.26}
.sec > .wrap{position:relative;z-index:1}

/* ---------- 8. HERO ---------- */
.hero{
  position:relative;background:var(--ink);color:#fff;
  padding-top:calc(82px + clamp(34px,4vw,64px));
  padding-bottom:clamp(48px,5vw,74px);
  overflow:hidden;
}
.hero::after{ /* vignette */
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(100deg,rgba(6,7,9,.95) 0%,rgba(6,7,9,.9) 21%,rgba(6,7,9,.3) 38%,rgba(6,7,9,0) 52%),
    linear-gradient(to bottom,rgba(6,7,9,.5) 0%,rgba(6,7,9,0) 20%,rgba(6,7,9,0) 55%,rgba(6,7,9,.72) 78%,rgba(6,7,9,.92) 100%);
}
.hero__bg{position:absolute;inset:0;pointer-events:none}
.hero__bg img{
  position:absolute;left:49%;top:45%;transform:translate(-50%,calc(-50% + 100px));
  width:min(70%,1008px);height:auto;max-width:none;opacity:1;
}
.hero .wrap{position:relative;z-index:2}
.hero__grid{align-items:stretch}
.hero__left{grid-column:span 8;display:flex;flex-direction:column}
.hero__title{margin-bottom:26px;text-shadow:0 2px 26px rgba(0,0,0,.5)}
.hero__title .l2,.hero__title .l3{color:var(--red);display:block}
.hero__rule{width:96px;height:3px;background:var(--red);margin-bottom:28px}
.hero__sub{
  max-width:38ch;color:rgba(255,255,255,.82);font-size:clamp(14.5px,1.1vw,16px);line-height:1.8;
}
.hero__note{
  margin-top:26px;max-width:44ch;
  border-left:3px solid var(--red);padding-left:16px;
  font-size:14.5px;font-weight:600;line-height:1.7;color:rgba(255,255,255,.94);
}
.hero__usps{margin-top:auto;padding-top:clamp(32px,3.6vw,56px)}
.hero__usp{position:relative;padding-right:10px}
.hero__usp + .hero__usp{border-left:1px solid var(--ln-dark);padding-left:20px}
.hero__usp svg{width:34px;height:34px;color:var(--red);margin-bottom:16px;stroke-width:1.5}
.hero__usp h3{font-size:12px;margin-bottom:9px;color:#fff;letter-spacing:0}
.hero__usp p{font-size:11.5px;line-height:1.65;color:rgba(255,255,255,.56)}

/* form panel hero */
.hero__form{grid-column:span 4;align-self:start}
.fpanel{
  background:rgba(10,12,14,.92);
  border:1.5px solid var(--red);
  border-radius:10px;
  padding:clamp(20px,1.55vw,24px);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.9);
  backdrop-filter:blur(6px);
}
.fpanel__title{font-family:Montserrat,sans-serif;font-weight:800;font-size:clamp(20px,1.6vw,25px);line-height:1.2;text-transform:uppercase;letter-spacing:-.01em}
.fpanel__title span{color:var(--red);display:block}
.fpanel__sub{margin-top:9px;font-size:12.5px;line-height:1.55;color:rgba(255,255,255,.6)}
.fpanel__body{margin-top:16px;display:flex;flex-direction:column;gap:8px}

.field{display:grid;grid-template-columns:106px minmax(0,1fr);align-items:center;gap:10px}
.field > label{font-size:12.5px;color:rgba(255,255,255,.72);line-height:1.35}
.field .req{color:var(--red)}
.ctrl{
  width:100%;min-height:36px;padding:7px 12px;
  background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.18);
  border-radius:5px;color:#fff;font-size:13.5px;
  transition:border-color .2s,background .2s,box-shadow .2s;
}
.ctrl::placeholder{color:rgba(255,255,255,.33)}
.ctrl:hover{border-color:rgba(255,255,255,.32)}
.ctrl:focus{outline:0;border-color:var(--red);background:rgba(255,255,255,.06);box-shadow:0 0 0 3px rgba(211,17,26,.16)}
.ctrl[aria-invalid="true"]{border-color:var(--red);background:rgba(211,17,26,.08)}
select.ctrl{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:15px;padding-right:34px;cursor:pointer}
select.ctrl option{background:#15181B;color:#fff}
textarea.ctrl{min-height:52px;resize:vertical;line-height:1.55}

.fgroup__lb{font-size:12.5px;color:rgba(255,255,255,.72);margin:4px 0 2px}
.checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px 10px;margin-top:4px}
.checks .check:last-child{grid-column:1 / -1}
.check{display:flex;align-items:center;gap:9px;font-size:12px;line-height:1.35;color:rgba(255,255,255,.8);cursor:pointer}
.check input{
  appearance:none;-webkit-appearance:none;flex:none;
  width:15px;height:15px;border:1px solid rgba(255,255,255,.34);border-radius:3px;
  background:transparent;cursor:pointer;position:relative;transition:background .18s,border-color .18s;
}
.check input:checked{background:var(--red);border-color:var(--red)}
.check input:checked::after{
  content:"";position:absolute;left:4.5px;top:1px;width:4px;height:8px;
  border:solid #fff;border-width:0 1.8px 1.8px 0;transform:rotate(43deg);
}
.check:hover input{border-color:rgba(255,255,255,.6)}

.fpanel .btn{margin-top:14px;min-height:48px}
.fnote{
  display:flex;align-items:flex-start;gap:9px;margin-top:11px;
  font-size:11.5px;line-height:1.55;color:rgba(255,255,255,.42);
}
.fnote svg{flex:none;width:14px;height:14px;margin-top:2px;color:var(--red)}
.fmsg{display:none;margin-top:14px;padding:12px 14px;border-radius:5px;font-size:13px;line-height:1.6}
.fmsg.is-ok{display:block;background:rgba(211,17,26,.12);border:1px solid var(--red);color:#fff}

/* ---------- 9. USP ---------- */
.usp__head{margin-bottom:clamp(30px,3.2vw,46px)}
.usp__intro{grid-column:span 4;display:flex;flex-direction:column;align-items:flex-start}
.usp__intro .lead{margin-bottom:22px}
.usp__intro .p + .p{margin-top:16px}
.usp__intro .lead span{display:block}
.usp__intro .btn{margin-top:30px}
.usp__cards{grid-column:span 8}
.card{
  background:var(--white);border:1px solid var(--ln-light);border-radius:8px;
  padding:clamp(18px,1.5vw,22px) clamp(16px,1.28vw,19px) clamp(20px,1.6vw,24px);
  box-shadow:var(--shadow-card);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift);border-color:#DADADA}
.card__ico{width:38px;height:38px;color:var(--red);stroke-width:1.4;margin-bottom:22px}
.card__rule{width:34px;height:2px;background:var(--red);margin-bottom:16px}
.card h3{margin-bottom:14px;font-size:15px;line-height:1.34}
.card p{color:var(--tx-2);font-size:12.5px;line-height:1.8}

/* ---------- 10. PROCESS ---------- */
.proc__intro{grid-column:span 4}
.proc__intro .p{margin-top:20px;max-width:36ch}
.proc__intro .p + .p{margin-top:16px}
.proc__steps{grid-column:span 8}
.step{position:relative}
.step__no{
  font-family:Montserrat,sans-serif;font-size:clamp(26px,2.4vw,34px);font-weight:800;
  color:var(--red);line-height:1;margin-bottom:18px;letter-spacing:-.02em;
}
.step__ico{
  width:56px;height:56px;border:1px solid var(--ln-dark);border-radius:8px;
  display:grid;place-items:center;background:rgba(255,255,255,.03);margin-bottom:22px;
  transition:border-color .25s,background .25s;
}
.step__ico svg{width:26px;height:26px;color:#fff;stroke-width:1.4}
.step:hover .step__ico{border-color:var(--red);background:rgba(211,17,26,.10)}
/* mũi tên nét đứt nối các bước — canh theo tâm ô icon bằng flex */
.step__row{display:flex;align-items:center;margin-bottom:22px}
.step__row .step__ico{margin-bottom:0}
.step__link{
  position:relative;flex:1;height:1px;margin-right:calc(var(--gut) * -1);margin-left:8px;
  background:repeating-linear-gradient(to right,var(--red) 0 6px,transparent 6px 12px);
}
.step__link::after{
  content:"";position:absolute;right:0;top:-3.5px;
  border-left:7px solid var(--red);border-block:4px solid transparent;
}
.step:last-child .step__link{display:none}
.step h3{color:#fff;margin-bottom:12px;font-size:13px}
.step p{font-size:11.5px;line-height:1.72;color:rgba(255,255,255,.56)}
/* vạch dọc đỏ mảnh phân tách như bản vẽ */
.step + .step::before{
  content:"";position:absolute;left:calc(var(--gut) / -2);top:52px;bottom:0;width:1px;
  background:linear-gradient(to bottom,var(--red),rgba(211,17,26,0));opacity:.5;
}

/* ---------- 11. STAGE ---------- */
.stage__head{text-align:center;margin-bottom:clamp(32px,3.4vw,48px)}
.stage__head .h2{max-width:min(100%,44ch);margin-inline:auto}
.stage__cards{grid-column:1 / -1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gut)}
.scard{
  background:var(--white);border:1px solid var(--ln-light);border-radius:8px;
  box-shadow:var(--shadow-card);transition:transform .28s ease,box-shadow .28s ease;
  display:flex;flex-direction:column;
}
.scard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift)}
.scard__media{position:relative;aspect-ratio:16/10}
.scard__imgwrap{position:absolute;inset:0;overflow:hidden;background:#EDEDED;border-radius:7px 7px 0 0}
.scard__media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1)}
.scard:hover .scard__media img{transform:scale(1.06)}
.scard__badge{
  position:absolute;left:50%;bottom:-25px;transform:translateX(-50%);
  width:50px;height:50px;border-radius:50%;background:var(--red);
  display:grid;place-items:center;box-shadow:0 10px 22px -10px rgba(211,17,26,.9);
  border:3px solid var(--white);
}
.scard__badge svg{width:22px;height:22px;color:#fff;stroke-width:1.5}
.scard__body{padding:38px clamp(18px,1.4vw,22px) clamp(22px,1.8vw,28px);flex:1}
.scard__body h3{margin-bottom:11px;font-size:14px}
.scard__body p{font-size:12.5px;line-height:1.75;color:var(--tx-2)}
.stage__cta{grid-column:1 / -1;display:flex;justify-content:center;margin-top:clamp(30px,3vw,44px)}

/* ---------- 12. VALUE ---------- */
.value__intro{grid-column:span 4}
.value__intro .h2{line-height:1.22}
.value__lead{margin-top:26px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.72)}
.value__rule{width:110px;height:2px;background:var(--red);margin-top:24px;opacity:.7}
.value__items{grid-column:span 8}
.vitem{padding-left:24px;border-left:1px solid var(--ln-dark);position:relative}
.vitem::before{content:"";position:absolute;left:-1px;top:0;width:1px;height:44px;background:var(--red)}
.vitem svg{width:34px;height:34px;color:var(--red);stroke-width:1.4;margin-bottom:26px}
.vitem h3{color:#fff;font-size:12.5px;margin-bottom:12px}
.vitem p{font-size:11.5px;line-height:1.72;color:rgba(255,255,255,.56)}

/* ---------- 13. ABOUT ---------- */
.about__media{grid-column:span 4}
.about__media img{width:100%;border-radius:8px;box-shadow:var(--shadow-lift);aspect-ratio:23/20;object-fit:cover}
.about__body{grid-column:span 4}
.about__kicker{font-family:Montserrat,sans-serif;font-size:13px;font-weight:800;letter-spacing:.13em;color:var(--red);text-transform:uppercase;margin-bottom:16px}
.about__body .h2{margin-bottom:26px;font-size:clamp(19px,1.78vw,25px);line-height:1.24}
.about__body .p + .p{margin-top:18px}
.about__list{grid-column:span 4;display:flex;flex-direction:column;justify-content:center}
.alist li{display:flex;align-items:flex-start;gap:16px;padding-block:15px}
.alist li + li{border-top:1px solid var(--ln-light)}
.alist svg{flex:none;width:28px;height:28px;color:var(--red);stroke-width:1.35;margin-top:1px}
.alist span{font-size:13.5px;line-height:1.6;color:var(--tx)}
.about__punch{
  margin-top:26px;color:var(--red);font-weight:700;font-size:14px;line-height:1.65;
}
.about__punch span{display:block}
.about__list .btn{margin-top:26px;align-self:flex-start}

/* ---------- 14. FINAL CTA + FORM ---------- */
.fcta{background:var(--ink);color:#fff;position:relative;overflow:hidden;padding-block:clamp(52px,5.4vw,84px)}
.fcta__bg{position:absolute;inset:0;pointer-events:none}
.fcta__bg img{opacity:.22}
.fcta .wrap{position:relative;z-index:1}
.fcta__grid{align-items:center}
.fcta__intro{grid-column:span 4}
.fcta__intro .kick{font-family:Montserrat,sans-serif;font-size:13px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;margin-bottom:14px;color:rgba(255,255,255,.9)}
.fcta__intro .h2{font-size:clamp(21px,2vw,29px);margin-bottom:20px}
.fcta__intro p{font-size:13px;line-height:1.8;color:rgba(255,255,255,.56);max-width:42ch}
.fcta__form{grid-column:span 8}
.fcta__fields{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px var(--gut)}
.ffield label{display:block;font-size:12.5px;color:rgba(255,255,255,.72);margin-bottom:9px}
.ffield .ctrl{
  background:#EDEDED;border-color:transparent;color:#15181B;min-height:46px;
}
.ffield .ctrl::placeholder{color:#9AA0A6}
.ffield .ctrl:hover{background:#F4F4F4}
.ffield .ctrl:focus{background:#fff;border-color:var(--red)}
.ffield select.ctrl{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2315181B' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px}
.ffield select.ctrl option{background:#fff;color:#15181B}
.ffield--btn{display:flex;align-items:flex-end}
.ffield--btn .btn{width:100%;min-height:46px;font-size:11.5px;letter-spacing:.045em;white-space:nowrap;padding-inline:14px}
.fcta .fnote{margin-top:18px}

/* ---------- 15. FOOTER ---------- */
.ftr{background:var(--ink-2);border-top:1px solid var(--ln-dark);color:#fff;padding-block:26px 20px}
.ftr__bar{display:flex;align-items:center;gap:clamp(20px,3vw,50px);flex-wrap:wrap}
.ftr__logo img{height:30px;width:auto}
.ftr__copy{font-size:13px;color:rgba(255,255,255,.45)}
.ftr__social{display:flex;align-items:center;gap:12px;margin-left:auto}
.ftr__social span{font-size:13px;color:rgba(255,255,255,.55);margin-right:6px}
.ftr__social a{
  width:38px;height:38px;border-radius:7px;border:1px solid var(--ln-dark);
  display:grid;place-items:center;color:rgba(255,255,255,.8);
  transition:background .22s,border-color .22s,color .22s,transform .22s;
}
.ftr__social a:hover{background:var(--red);border-color:var(--red);color:#fff;transform:translateY(-2px)}
.ftr__social svg{width:17px;height:17px}

/* MONA signature */
.mona-sign{
  display:flex;align-items:center;justify-content:center;gap:13px;flex-wrap:wrap;
  padding:22px 0 2px;margin-top:16px;
  border-top:1px solid var(--sig-line,rgba(255,255,255,.07));
}
.mona-sign span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--sig-label,rgba(255,255,255,.42))}
.mona-sign a{display:inline-flex;opacity:.9;transition:opacity .2s,transform .2s}
.mona-sign a:hover{opacity:1;transform:translateY(-1px)}
.mona-sign img{height:19px;width:auto;display:block}

/* ---------- 16. Sticky mobile CTA ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:180;display:none;
  align-items:center;gap:14px;
  padding:11px var(--pad) calc(11px + env(safe-area-inset-bottom));
  background:rgba(6,7,9,.97);border-top:1px solid var(--ln-dark);
  backdrop-filter:blur(10px);
  transform:translateY(110%);transition:transform .35s cubic-bezier(.2,.7,.3,1);
}
.sticky-cta.is-on{transform:translateY(0)}
.sticky-cta p{font-family:Montserrat,sans-serif;font-size:12.5px;font-weight:800;text-transform:uppercase;color:#fff;line-height:1.3}
.sticky-cta .btn{margin-left:auto;flex:none;min-height:44px;padding:10px 18px;font-size:12px}

/* ---------- 17. Reveal ---------- */
.rv{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.rv.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  *{scroll-behavior:auto !important}
}
html{scroll-behavior:smooth;scroll-padding-top:96px}

/* ==========================================================================
   18. Responsive — vẫn giữ mạch 12 cột, chỉ đổi số cột mỗi khối chiếm
   ========================================================================== */
@media (max-width:1320px){
  .nav{gap:16px}
  .nav a{font-size:11.5px}
  .field{grid-template-columns:100px minmax(0,1fr)}
}
@media (max-width:1180px){
  /* điều hướng chuyển sang menu thu gọn: nhãn tiếng Việt dài, không đủ chỗ 1 hàng */
  .nav{
    position:fixed;inset:82px 0 auto;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(6,7,9,.985);border-bottom:1px solid var(--ln-dark);
    padding:8px var(--pad) 22px;margin:0;
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.28s ease;
    max-height:calc(100dvh - 82px);overflow:auto;
  }
  .nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav a{padding:15px 0;border-bottom:1px solid var(--ln-dark);font-size:13px}
  .nav a::after{display:none}
  .burger{display:flex}
  .hdr__cta{display:none}
  .hdr__in{justify-content:space-between}
  .sticky-cta{display:flex}
}
@media (max-width:1080px){
  .hero__left{grid-column:span 7}
  .hero__form{grid-column:span 5}
  .hero__usps{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .hero__usp + .hero__usp{border-left:0;padding-left:0}
  .hero__usp:nth-child(even){border-left:1px solid var(--ln-dark);padding-left:20px}
  .usp__intro,.proc__intro,.value__intro{grid-column:span 12}
  .usp__cards,.proc__steps,.value__items{grid-column:span 12}
  .usp__cards,.value__items{grid-template-columns:repeat(2,minmax(0,1fr))}
  .proc__steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px var(--gut)}
  .step__link{display:none}
  .step + .step::before{display:none}
  .about__media,.about__body{grid-column:span 6}
  .about__list{grid-column:span 12;margin-top:8px}
  .alist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 var(--gut)}
  .alist li + li{border-top:0}
  .about__list .btn{margin-top:20px}
  .fcta__intro{grid-column:span 12}
  .fcta__form{grid-column:span 12}
  .value__intro .h2{max-width:20ch}
  .hero__bg img{width:min(70%,660px)}
}
@media (max-width:900px){
  .hero__left,.hero__form{grid-column:span 12}
  .hero__form{margin-top:14px}
  .fpanel{max-width:560px}
  .hero__bg img{width:min(112%,600px);top:40%}
  .stage__cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  /* bản vẽ mặt bằng: trên mobile chỉ giữ vai trò điểm nhấn góc, không phủ cả section */
  .sec__bg img.sec__bg--plan{height:auto;width:min(108%,480px);top:auto;bottom:3%;right:-14%;opacity:.2}
  .sec__bg img,.fcta__bg img{opacity:.16}
  .sec--dark .sec__bg img,.sec--black .sec__bg img{opacity:.2}
}
@media (max-width:720px){
  :root{--gut:18px}
  .hero__usps{grid-template-columns:1fr;gap:22px}
  .hero__usp:nth-child(even){border-left:0;padding-left:0}
  .hero__usp + .hero__usp{border-top:1px solid var(--ln-dark);padding-top:22px}
  .usp__cards,.value__items,.stage__cards,.proc__steps{grid-template-columns:1fr}
  /* mỗi bước: ô icon bên trái, nội dung bên phải — bớt ~40% chiều cao */
  .proc__steps{gap:26px}
  .step{display:grid;grid-template-columns:56px minmax(0,1fr);column-gap:16px;align-items:start}
  .step__row{grid-column:1;grid-row:1 / span 3;margin-bottom:0}
  .step__no{grid-column:2;grid-row:1;margin-bottom:6px;font-size:22px}
  .step h3{grid-column:2;grid-row:2;margin-bottom:8px}
  .step p{grid-column:2;grid-row:3}
  .about__media,.about__body{grid-column:span 12}
  #grand-home{padding-block-start:18px}
  .alist{grid-template-columns:1fr}
  .alist li + li{border-top:1px solid var(--ln-light)}
  .fcta__fields{grid-template-columns:1fr}
  .ffield--btn{margin-top:4px}
  .ftr__bar{flex-direction:column;align-items:flex-start;gap:16px}
  .ftr__social{margin-left:0}
  .ftr__social a{width:42px;height:42px}
  .vitem{padding-left:20px}
  .sticky-cta p{font-size:11.5px}
}
@media (max-width:520px){
  .field{grid-template-columns:1fr;gap:6px;align-items:stretch}
  .checks{grid-template-columns:1fr;gap:0}
  /* nới vùng chạm cho ô chọn, tối thiểu 44px theo chuẩn mobile */
  .check{min-height:44px;padding-block:4px}
  .hdr__logo,.ftr__logo{padding-block:8px}
  .field > label{margin-bottom:0}
  .btn{padding:12px 20px;font-size:13px}
  .hero__title{font-size:clamp(28px,8.6vw,40px)}
}

/* ==========================================================================
   18. Contact Form 7 — bù markup wrapper mà CF7 sinh thêm
   Bản gốc là form tĩnh; khi chuyển sang CF7, mỗi control bị bọc trong
   <span class="wpcf7-form-control-wrap"> và nhóm checkbox bị gói trong
   <span class="wpcf7-checkbox">. Khối này map style cũ sang markup mới.
   ========================================================================== */

/* wrapper của CF7 là inline -> phải là block thì .ctrl{width:100%} mới ăn */
.wpcf7-form-control-wrap{display:block;position:relative}
.wpcf7 form{margin:0}

/* vùng thông báo cho screen reader: ẩn nhưng vẫn đọc được */
.wpcf7 .screen-reader-response{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ---- nhóm checkbox "Bạn đang quan tâm đến" ---- */
/* CF7 gói cả nhóm trong 1 span -> cho span đó chiếm trọn hàng,
   rồi dựng lại lưới 2 cột ở tầng .wpcf7-checkbox */
.checks > .wpcf7-form-control-wrap{grid-column:1 / -1}
.checks .wpcf7-checkbox{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px 10px}
.checks .wpcf7-list-item{margin:0}
.checks .wpcf7-list-item:last-child{grid-column:1 / -1}
.checks .wpcf7-list-item label{
  display:flex;align-items:center;gap:9px;margin:0;
  font-size:12px;line-height:1.35;color:rgba(255,255,255,.8);cursor:pointer;
}
.checks .wpcf7-list-item input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;flex:none;
  width:15px;height:15px;border:1px solid rgba(255,255,255,.34);border-radius:3px;
  background:transparent;cursor:pointer;position:relative;transition:background .18s,border-color .18s;
}
.checks .wpcf7-list-item input[type="checkbox"]:checked{background:var(--red);border-color:var(--red)}
.checks .wpcf7-list-item input[type="checkbox"]:checked::after{
  content:"";position:absolute;left:4.5px;top:1px;width:4px;height:8px;
  border:solid #fff;border-width:0 1.8px 1.8px 0;transform:rotate(43deg);
}
.checks .wpcf7-list-item label:hover input[type="checkbox"]{border-color:rgba(255,255,255,.6)}
.checks .wpcf7-list-item-label{flex:1}
.checks .wpcf7-list-item-label::before,
.checks .wpcf7-list-item-label::after{content:none}

/* CF7 xuất [textarea] kèm rows="10" -> cao gấp ~10 lần bản gốc.
   Bản tĩnh không đặt rows, chỉ dựa vào min-height. */
textarea.wpcf7-textarea.ctrl{height:52px}

/* ---- báo lỗi từng field: thay cho cơ chế aria-invalid cũ ---- */
.ctrl.wpcf7-not-valid{border-color:var(--red)}
.wpcf7-not-valid-tip{
  display:block;margin-top:5px;
  font-size:11.5px;line-height:1.4;color:#FF6A6F;
}

/* ---- thông báo chung: thay cho .fmsg ---- */
.wpcf7 form .wpcf7-response-output{
  display:none;margin:14px 0 0;padding:12px 14px;
  border:1px solid var(--red);border-radius:5px;background:rgba(211,17,26,.12);
  color:#fff;font-size:13px;line-height:1.6;
}
.wpcf7 form.sent .wpcf7-response-output,
.wpcf7 form.invalid .wpcf7-response-output,
.wpcf7 form.unaccepted .wpcf7-response-output,
.wpcf7 form.payment-required .wpcf7-response-output,
.wpcf7 form.failed .wpcf7-response-output,
.wpcf7 form.aborted .wpcf7-response-output,
.wpcf7 form.spam .wpcf7-response-output{display:block}

/* ---- spinner: CF7 chèn ngay sau nút submit ----
   Mặc định CF7 để visibility:hidden -> vẫn chiếm chỗ, tạo khoảng trống 24px
   dưới nút. Đổi sang display:none, chỉ bật khi form đang gửi. */
.wpcf7-spinner{display:none}
.wpcf7 form.submitting .wpcf7-spinner{display:block;margin:12px auto 0}
.ffield--btn{position:relative}
.wpcf7 form.submitting .ffield--btn .wpcf7-spinner{position:absolute;right:0;bottom:-34px;margin:0}

/* ---- honeypot: không bao giờ hiện ---- */
.wpcf7 .wpcf7-honeypot-container{display:none !important}

@media (max-width:520px){
  .checks .wpcf7-checkbox{grid-template-columns:1fr}
  .checks .wpcf7-list-item:last-child{grid-column:auto}
  .checks .wpcf7-list-item label{min-height:44px;padding-block:4px}
}

/* ==========================================================================
   19. Điều chỉnh cho bộ ảnh mới (logo SVG + ảnh tập thể)
   ========================================================================== */

/* Logo SVG là bản lockup đầy đủ kèm slogan "Kết tinh giá trị sống".
   Ở 30px như bản PNG cũ thì dòng slogan chỉ còn ~4px, nhòe không đọc được. */
.hdr__logo img,
.ftr__logo img{height:42px}

/* Ảnh section "Grand Home" giờ là ảnh tập thể khổ ngang 3:2.
   Khung cũ 23/20 + object-fit:cover sẽ cắt ~11% mỗi bên, mất người ở rìa. */
.about__media img{aspect-ratio:3/2}

@media (max-width:1180px){
  /* menu đã thu gọn thành burger, chừa chỗ cho nút */
  .hdr__logo img,.ftr__logo img{height:36px}
}
@media (max-width:520px){
  .hdr__logo img,.ftr__logo img{height:30px}
}

/* ==========================================================================
   20. Footer thông tin liên hệ
   ========================================================================== */
.ftr__contact{display:flex;flex-wrap:wrap;gap:10px 28px;padding:14px 0 4px;border-top:1px solid rgba(255,255,255,.1);margin-top:14px}
.ftr__contact-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text, #eee);text-decoration:none;line-height:1.4}
.ftr__contact-item svg{width:17px;height:17px;flex-shrink:0;color:var(--red,#c41f29)}
a.ftr__contact-item:hover span{text-decoration:underline}
@media (max-width:520px){
  .ftr__contact{flex-direction:column;gap:8px}
}