/* Nhà Mộc - nhamoc.diengiapham.vn */
:root{
  --ink:#2b2522; --ink-2:#5a504a; --paper:#f6efe4; --paper-2:#efe4d3;
  --wood:#8a5a2b; --wood-2:#b07a43; --cement:#3b3430;
  --terra:#d2693c; --sun:#e8b33a; --teal:#2f8f8a; --blue:#5b7fc0;
  --r:18px; --shadow:0 10px 30px rgba(43,37,34,.12);
  --serif:"Lora",Georgia,serif; --sans:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.65;color:var(--ink);background:var(--paper)}
img{max-width:100%;height:auto;display:block}
a{color:var(--wood)}
h1,h2,h3{font-family:var(--serif);line-height:1.25;margin:0 0 .5em}
h2{font-size:clamp(28px,4vw,42px)}
h3{font-size:21px}
p{margin:0 0 1em}
.wrap{width:min(1160px,92%);margin:0 auto}
.wrap--narrow{width:min(820px,92%)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;padding:.85em 1.5em;border-radius:999px;font-weight:600;text-decoration:none;border:2px solid transparent;cursor:pointer;font:inherit;font-weight:600;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-2px)}
.btn--paint{background:var(--terra);color:#fff;box-shadow:0 6px 0 #a94d26}
.btn--paint:hover{box-shadow:0 8px 0 #a94d26}
.btn--ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn--ghost-dark{border-color:var(--ink);color:var(--ink)}
.btn--sm{padding:.5em 1.1em;font-size:15px;box-shadow:0 4px 0 #a94d26}
.btn--block{width:100%}

/* topbar */
.topbar{position:sticky;top:0;z-index:50;background:rgba(43,37,34,.94);backdrop-filter:blur(8px);color:#fff}
.topbar__in{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.brand__mark svg{width:40px;height:40px}
.brand__txt{display:flex;flex-direction:column;line-height:1.1}
.brand__txt b{font-family:var(--serif);letter-spacing:.08em;font-size:19px}
.brand__txt small{color:#d9c3a5;font-size:12px;letter-spacing:.12em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:22px}
.nav a:not(.btn){color:#efe4d3;text-decoration:none;font-size:15px}
.nav a:not(.btn):hover{color:var(--sun)}
.nav-toggle{display:none;background:none;border:0;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:.2s}

/* hero */
.hero{position:relative;color:#fff;background:linear-gradient(180deg,rgba(30,25,22,.55),rgba(30,25,22,.78)),url(../img/nen-xi-mang.jpg) center/cover;padding:110px 0 150px;overflow:hidden}
.hero::before{content:"";position:absolute;width:520px;height:520px;right:-120px;top:-80px;border-radius:50%;background:radial-gradient(circle,rgba(232,179,58,.35),transparent 65%)}
.hero__in{position:relative;max-width:860px}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:14px;color:#e9c99a;font-weight:600;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.dash{display:inline-block;width:46px;height:1px;background:#e9c99a}
.hero h1{font-size:clamp(34px,6vw,64px);margin:.3em 0 .45em}
.hero h1 em{font-style:italic;color:var(--sun)}
.lead{font-size:clamp(17px,2vw,20px);color:#efe4d3;max-width:720px}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 40px}
.hero__facts{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:12px}
.hero__facts li{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:10px 16px;font-size:15px;color:#efe4d3}
.hero__facts b{font-family:var(--serif);font-size:24px;color:#fff;margin-right:6px}
.hero__stroke{position:absolute;bottom:-1px;left:0;width:100%;height:90px}

/* sections */
.section{padding:90px 0}
.section--paper{background:var(--paper-2)}
.section--dark{background:var(--cement) url(../img/nen-xi-mang.jpg) center/cover;background-blend-mode:multiply;color:#efe4d3}
.head{max-width:780px;margin:0 0 46px}
.head__sub{color:var(--ink-2);font-size:18px}
.head--light h2{color:#fff}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--terra);margin-bottom:10px}
.section--dark .kicker{color:var(--sun)}

/* principles */
.principles{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.pr{background:#fff;border-radius:var(--r);padding:26px 22px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.pr::before{content:"";position:absolute;left:0;top:0;width:100%;height:7px;background:var(--c);border-radius:0 0 40% 60%/0 0 100% 100%}
.pr__n{font-family:var(--serif);font-size:34px;color:var(--c);font-weight:700;display:block;margin-bottom:6px}
.pr h3{font-size:19px}
.pr p{font-size:15.5px;color:var(--ink-2);margin:0}
.quote{margin:56px auto 0;max-width:760px;text-align:center}
.quote p{font-family:var(--serif);font-style:italic;font-size:clamp(22px,3vw,30px);color:var(--wood)}
.quote cite{font-style:normal;font-size:14px;color:var(--ink-2)}

/* classes */
.classes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cls{background:#fff;border-radius:var(--r);padding:28px 26px;box-shadow:var(--shadow);border-top:8px solid var(--c);display:flex;flex-direction:column}
.cls__top{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.tag{font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;background:var(--c);color:#fff}
.tag--soft{background:var(--paper-2);color:var(--ink)}
.cls p{color:var(--ink-2);font-size:16px}
.cls ul{padding-left:1.1em;margin:0 0 16px;font-size:15.5px}
.cls li{margin-bottom:4px}
.cls li::marker{color:var(--c)}
.cls__who{font-size:15px;margin-top:auto}
.cls__who b{color:var(--ink)}
.cls__link{font-weight:600;text-decoration:none;color:var(--c);filter:brightness(.85)}
.cls__link::after{content:" \2192"}
.cls--sun .tag:not(.tag--soft){color:var(--ink)}
.cls--sun .cls__link,.cls--sun li::marker{color:#a8761a;filter:none}
.cls--cta{background:var(--cement);color:#fff;border-top-color:var(--sun);justify-content:center}
.cls--cta p{color:#efe4d3}

/* be ve */
.bv{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start}
.facts{margin:0;background:#fff;border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}
.facts div{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:13px 22px;border-bottom:1px dashed #e4d6c2}
.facts div:last-child{border-bottom:0}
.facts dt{font-weight:700;color:var(--wood);font-size:15px}
.facts dd{margin:0;font-size:15.5px}
.note{font-size:14.5px;color:var(--ink-2);margin-top:14px}
.weeks{list-style:none;counter-reset:w;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.weeks li{counter-increment:w;background:#fff;border-radius:14px;padding:12px 14px 12px 56px;position:relative;box-shadow:0 4px 14px rgba(43,37,34,.07)}
.weeks li::before{content:counter(w);position:absolute;left:12px;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-family:var(--serif);font-weight:700;color:#fff;background:var(--terra)}
.weeks li:nth-child(4n+2)::before{background:var(--sun)}
.weeks li:nth-child(4n+3)::before{background:var(--teal)}
.weeks li:nth-child(4n+4)::before{background:var(--blue)}
.weeks span{display:block;font-weight:600;font-size:15.5px;line-height:1.3}
.weeks small{color:var(--ink-2);font-size:13.5px}

/* teachers */
.teachers{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.tc{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);overflow:hidden;display:grid;grid-template-columns:200px 1fr}
.tc img{width:100%;height:100%;object-fit:cover;object-position:top}
.tc__ph{background:linear-gradient(135deg,var(--terra),var(--sun));display:grid;place-items:center;min-height:260px}
.tc__ph span{font-family:var(--serif);font-size:58px;color:#fff;font-weight:700}
.tc__body{padding:26px}
.tc h3{color:#fff}
.tc__role{color:var(--sun);font-size:14px;font-weight:600}
.tc p{font-size:15.5px}

/* faq */
.faq details{background:#fff;border-radius:14px;margin-bottom:12px;box-shadow:0 4px 14px rgba(43,37,34,.07)}
.faq summary{cursor:pointer;padding:18px 54px 18px 22px;font-weight:600;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:26px;color:var(--terra);line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details p{padding:0 22px 18px;margin:0;color:var(--ink-2)}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact__list{list-style:none;padding:0;margin:20px 0 26px}
.contact__list li{padding:12px 0;border-bottom:1px dashed #d6c4aa}
.contact__list span{display:block;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--wood)}
.contact__list a{font-size:22px;font-weight:700;text-decoration:none;color:var(--ink)}
.contact__btns{display:flex;flex-wrap:wrap;gap:12px}
.form{background:#fff;border-radius:var(--r);padding:30px;box-shadow:var(--shadow)}
.form label{display:block;font-weight:600;font-size:15px;margin-bottom:14px}
.form input,.form select,.form textarea{display:block;width:100%;margin-top:6px;padding:12px 14px;border:1.5px solid #dccbb3;border-radius:12px;font:inherit;font-weight:400;background:#fffdf9}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--terra);box-shadow:0 0 0 3px rgba(210,105,60,.18)}
.form__msg{margin:14px 0 0;font-size:15px;color:var(--teal);font-weight:600}
.form__msg.err{color:#b3261e}

/* footer */
.footer{background:#1f1a17;color:#cbb89c;padding:46px 0;font-size:15px}
.footer__in{display:grid;grid-template-columns:1.3fr 1fr;gap:36px;align-items:center}
.footer img{border-radius:12px}
.footer a{color:var(--sun)}
.footer__small{font-size:13.5px;color:#9c8b74}

.float-zalo{position:fixed;right:18px;bottom:18px;z-index:60;width:60px;height:60px;border-radius:50%;background:#0068ff;color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;text-decoration:none;box-shadow:0 8px 22px rgba(0,104,255,.45);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(0,104,255,.45)}50%{box-shadow:0 0 0 12px rgba(0,104,255,0)}}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.float-zalo{animation:none}html{scroll-behavior:auto}}

/* responsive */
@media (max-width:1080px){
  .principles{grid-template-columns:repeat(3,1fr)}
  .classes{grid-template-columns:1fr 1fr}
  .bv,.contact,.teachers{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav-toggle{display:block}
  .nav{position:fixed;inset:68px 0 auto 0;background:#2b2522;flex-direction:column;align-items:stretch;gap:0;padding:8px 4% 18px;transform:translateY(-120%);transition:transform .25s;box-shadow:0 12px 20px rgba(0,0,0,.25)}
  .nav.open{transform:none}
  .nav a:not(.btn){padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav .btn{margin-top:14px}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}
@media (max-width:640px){
  body{font-size:16px}
  .section{padding:64px 0}
  .hero{padding:72px 0 120px}
  .principles,.classes,.weeks{grid-template-columns:1fr}
  .tc{grid-template-columns:1fr}
  .tc img{height:320px}
  .tc__ph{min-height:160px}
  .facts div{grid-template-columns:1fr;gap:2px}
  .footer__in{grid-template-columns:1fr}
}