/* VIET MOLLY v3.1 — bám layout shop.thebiotagroup.com, da nhận diện VIET MOLLY (cobalt board 19/08). */
:root{
  --bg:#FFFFFF;
  --bg-soft:#F4F6F8;
  --line:#E5E7EB;
  --ink:#111111;
  --dim:#5B6470;
  --accent:#085FFF;
  --accent-deep:#0848C7;
  --accent-bright:#4D8AFF; /* heading trên nền đen */
  --on-accent:#FFFFFF;
  --font-sans:'Montserrat','Noto Sans Thai','Noto Sans SC',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--font-sans);font-weight:400;
  line-height:1.6;overflow-x:hidden;
}
::selection{background:var(--accent);color:var(--on-accent)}
img,video{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-weight:700;line-height:1.18;letter-spacing:-.005em}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 18px;z-index:200}
.skip:focus{left:0}
.wrap{max-width:1280px;margin:0 auto;padding:0 4vw}

/* ===== announcement ===== */
.ann{
  background:var(--accent);color:var(--on-accent);
  text-align:center;font-size:13px;font-weight:600;letter-spacing:.03em;
  padding:9px 16px;
}

/* ===== header (đen, logo giữa — bài Biota) ===== */
header{position:sticky;top:0;z-index:100;background:var(--ink)}
.nav{
  max-width:1420px;margin:0 auto;padding:0 3vw;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  min-height:86px;gap:16px;
}
.nav-left{display:flex;align-items:center;gap:28px;justify-self:start}
.nav-right{display:flex;align-items:center;gap:18px;justify-self:end}
.menu-a{
  text-decoration:none;color:#fff;font-size:12.5px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;padding:10px 0;
  transition:color .2s;
}
.menu-a:hover{color:var(--accent-bright)}
.has-dd{position:relative}
.dd{
  position:absolute;top:100%;left:-14px;min-width:190px;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:0 16px 40px rgba(0,0,0,.18);padding:8px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .2s,transform .2s,visibility .2s;
  list-style:none;z-index:50;
}
.has-dd:hover .dd,.has-dd:focus-within .dd{opacity:1;visibility:visible;transform:translateY(0)}
.dd a{display:block;padding:9px 14px;border-radius:8px;font-size:13.5px;font-weight:600;color:var(--ink);text-decoration:none}
.dd a:hover{background:var(--bg-soft);color:var(--accent)}

.logo{display:flex;flex-direction:column;align-items:center;text-decoration:none;line-height:1;justify-self:center;padding:14px 0}
.logo .word{
  display:flex;align-items:center;gap:1px;
  font-weight:800;font-size:24px;letter-spacing:.08em;color:#fff;
}
.logo .word svg{width:23px;height:23px;margin:0 1px;transform:translateY(1px)}
.logo .tag{
  font-size:8.5px;font-weight:600;letter-spacing:.36em;color:#9AA3AE;
  margin-top:5px;text-transform:uppercase;white-space:nowrap;
}
.lang{display:flex;gap:2px;border:1px solid #3A3F46;border-radius:999px;padding:3px}
.lang button{
  border:0;background:none;font:inherit;font-size:11px;font-weight:600;
  padding:5px 9px;border-radius:999px;cursor:pointer;color:#9AA3AE;
}
.lang button.on{background:#fff;color:var(--ink)}
.burger{display:none;border:0;background:none;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:#fff;margin:5px 0}
.m-menu{display:none}

/* ===== nút ===== */
.btn{
  display:inline-block;border:0;cursor:pointer;text-decoration:none;text-align:center;
  background:var(--accent);color:var(--on-accent);
  font:inherit;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:14px 34px;border-radius:999px;
  transition:background .2s,transform .2s;
}
.btn:hover{background:var(--accent-deep);transform:translateY(-1px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn.light{background:#fff;color:var(--accent-deep)}
.btn.light:hover{background:var(--line)}
.btn.outline{background:none;color:var(--ink);border:1.5px solid var(--ink)}
.btn.outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(8,95,255,.04)}

/* ===== hero (ảnh full, chữ giữa — bài Biota) ===== */
.hero{
  position:relative;min-height:74vh;display:grid;place-items:center;
  overflow:hidden;background:linear-gradient(180deg,#0A1728,#0D2140 60%,#0A1728);
  text-align:center;color:#fff;
}
.hero .media img,.hero .media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .school-temp{
  position:absolute;left:50%;top:44%;transform:translate(-50%,-50%);
  width:min(78vw,1100px);opacity:.85;pointer-events:none;
  filter:drop-shadow(0 20px 40px rgba(0,0,0,.5));
}
.hero .scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.15),rgba(5,10,20,.55))}
.hero-inner{position:relative;z-index:2;padding:100px 6vw;max-width:900px}
.hero h1{font-size:clamp(34px,4.8vw,64px);font-weight:800;text-shadow:0 2px 30px rgba(0,0,0,.55)}
.hero p{margin:16px auto 32px;font-size:clamp(15px,1.4vw,18px);max-width:52ch;color:#E7EDF5;text-shadow:0 1px 16px rgba(0,0,0,.6)}

/* ===== section chung ===== */
section{padding:74px 0}
.sec-h{font-size:clamp(28px,3.2vw,44px);text-align:center;margin-bottom:12px}
.sec-lede{color:var(--dim);text-align:center;max-width:60ch;margin:0 auto 44px}

/* ===== dải danh mục: ô sát nhau full màn (bài Our Collections) ===== */
.collections{padding:74px 0 0}
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:2px;margin-top:8px}
.tile{
  position:relative;display:block;aspect-ratio:1/1.15;overflow:hidden;
  background:linear-gradient(165deg,#101826,#0B1B33);text-decoration:none;
}
.tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.tile:hover img{transform:scale(1.05)}
.tile .ph{
  position:absolute;inset:0;display:grid;place-items:center;padding-bottom:16%;
}
.tile .ph svg{width:52px;height:52px;opacity:.35}
.tile .name{
  position:absolute;left:0;right:0;bottom:16px;text-align:center;
  color:#fff;font-weight:800;font-size:clamp(15px,1.5vw,21px);
  text-shadow:0 2px 14px rgba(0,0,0,.8);letter-spacing:.01em;
}
.tile::after{content:"";position:absolute;inset:55% 0 0 0;background:linear-gradient(180deg,transparent,rgba(4,8,16,.65))}
.tile .name{z-index:2}

/* ===== product grid (bài Ocean Oddities, giá thay bằng liên hệ) ===== */
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.pcard{
  display:flex;flex-direction:column;text-decoration:none;
  border:1px solid var(--line);background:#fff;
  transition:box-shadow .25s,transform .25s;
}
.pcard:hover{box-shadow:0 14px 34px rgba(17,17,17,.12);transform:translateY(-3px)}
.pcard .im{position:relative;aspect-ratio:1/1;overflow:hidden;background:linear-gradient(165deg,#101826,#0B1B33)}
.pcard .im img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pcard .im .ph{position:absolute;inset:0;display:grid;place-items:center}
.pcard .im .ph svg{width:56px;height:56px;opacity:.35}
.pcard .tx{padding:16px 14px 20px;text-align:center}
.pcard .tx h3{font-size:16px;font-weight:700}
.pcard .tx .ask{margin-top:6px;font-size:13px;font-weight:600;color:var(--accent)}
.pmore{text-align:center}

/* ===== story 50/50 (bài Biota mission blocks) ===== */
.story{padding:0}
.split{display:grid;grid-template-columns:1fr 1fr;min-height:520px}
.split .visual{position:relative;overflow:hidden;background:#000;min-height:340px}
.split .visual img,.split .visual video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.split .visual.fit video,.split .visual.fit img{object-fit:contain;padding:5%}
.split .pane{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:76px 6vw}
.split .pane h2{font-size:clamp(26px,2.8vw,40px);margin-bottom:18px}
.split .pane p{max-width:50ch;margin-bottom:30px}
.pane.on-ink{background:var(--ink);color:#E5E7EB}
.pane.on-ink h2{color:var(--accent-bright)}
.pane.on-accent{background:var(--accent);color:#fff}
.pane.on-accent p{color:#D6E3FF}
.pane.on-deep{background:var(--accent-deep);color:#fff}
.pane.on-deep p{color:#D6E3FF}

/* ===== USP strip ===== */
.usp{background:var(--bg-soft);border-block:1px solid var(--line);padding:34px 0}
.usp ul{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:14px 42px}
.usp li{display:flex;gap:10px;align-items:center;font-size:13.5px;font-weight:700}
.usp li svg{flex:0 0 20px;width:20px;height:20px}

/* ===== FAQ ===== */
.faq .inner{max-width:820px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  padding:20px 4px;font-weight:700;font-size:15.5px;gap:20px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;font-weight:400;color:var(--accent);transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 4px 20px;color:var(--dim);max-width:64ch}

/* ===== contact ===== */
.contact{text-align:center}
.contact p{color:var(--dim);margin:10px auto 34px;max-width:50ch}
.chs{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.ch{
  display:flex;align-items:center;gap:10px;text-decoration:none;
  border:1.5px solid var(--ink);color:var(--ink);font-weight:700;font-size:13px;
  letter-spacing:.06em;text-transform:uppercase;
  padding:13px 28px;border-radius:999px;transition:all .2s;
}
.ch:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}

/* ===== footer đen (bài Biota) ===== */
footer{background:var(--ink);color:#B9C1CC;font-size:13.5px}
footer .cols{
  max-width:1280px;margin:0 auto;padding:60px 4vw 40px;
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
}
footer h4{color:#fff;font-size:12px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
footer ul{list-style:none;display:grid;gap:9px}
footer a{color:#B9C1CC;text-decoration:none}
footer a:hover{color:#fff}
footer .fbrand .word{display:flex;align-items:center;gap:1px;font-weight:800;font-size:20px;letter-spacing:.08em;color:#fff}
footer .fbrand .word svg{width:19px;height:19px;margin:0 1px}
footer .fbrand p{margin-top:14px;max-width:34ch}
footer .base{
  border-top:1px solid #2A2F36;
  max-width:1280px;margin:0 auto;padding:20px 4vw;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#8A93A0;
}

/* ===== fish page ===== */
.fp-hero{padding:56px 0 36px;text-align:center}
.fp-hero .bc{font-size:12.5px;color:var(--dim);margin-bottom:12px}
.fp-hero .bc a{color:var(--dim);text-decoration:none}
.fp-hero .bc a:hover{color:var(--accent)}
.fp-hero h1{font-size:clamp(34px,4.4vw,56px)}
.fp-hero .lede{color:var(--dim);max-width:56ch;margin:12px auto 0;font-size:16px}
.fp-media{overflow:hidden;background:#000;aspect-ratio:16/8.5;position:relative;border:1px solid var(--line)}
.fp-media img,.fp-media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.fp-media .ph{position:absolute;inset:0;display:grid;place-items:center;background:linear-gradient(160deg,#101826,#0B1B33)}
.fp-media .ph svg{width:90px;height:90px;opacity:.4}
.fp-media .ph i{position:absolute;bottom:22%;font-style:normal;font-size:12px;letter-spacing:.08em;color:#9fb0c8;text-transform:uppercase}
.fp-body{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;padding:60px 0}
.fp-body h2{font-size:22px;margin-bottom:14px}
.fp-body .desc{color:var(--dim)}
.fp-side{border:1px solid var(--line);padding:30px;height:fit-content;background:var(--bg-soft)}
.fp-side h3{font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.fp-side ul{list-style:none;display:grid;gap:10px;font-size:14px}
.fp-side li{display:flex;gap:10px;align-items:flex-start}
.fp-side li svg{flex:0 0 18px;width:18px;height:18px;margin-top:3px}
.fp-side .btn{width:100%;margin-top:22px}
.others{background:var(--bg-soft);border-top:1px solid var(--line)}
.others .tiles{grid-template-columns:repeat(5,1fr)}

/* ===== arrival guide ===== */
.guide{max-width:820px;margin:0 auto}
.gstep{display:flex;gap:28px;padding:30px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.gstep .num{font-weight:800;font-size:40px;color:var(--accent);line-height:1;min-width:64px;letter-spacing:-.02em}
.gstep h3{font-size:19px;margin-bottom:6px}
.gstep p{color:var(--dim)}
.gclaim{margin-top:52px;border:1.5px solid var(--ink);padding:36px;background:var(--bg-soft);text-align:center}
.gclaim h2{font-size:clamp(20px,2.2vw,28px);margin-bottom:12px}
.gclaim p{color:var(--dim);max-width:56ch;margin:0 auto 26px}
@media (max-width:780px){
  .gstep{gap:18px}
  .gstep .num{font-size:30px;min-width:44px}
}

/* ===== reveal ===== */
.rv{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.rv.in{opacity:1;transform:none}

/* ===== responsive ===== */
@media (max-width:1080px){
  .tiles{grid-template-columns:repeat(3,1fr)}
  .pgrid{grid-template-columns:repeat(2,1fr)}
  .others .tiles{grid-template-columns:repeat(3,1fr)}
  .fp-body{grid-template-columns:1fr;gap:36px}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .nav{grid-template-columns:auto 1fr auto;min-height:72px}
  .nav-left{display:none}
  .logo{justify-self:start;order:-1}
  .logo .word{font-size:19px}
  .burger{display:block}
  .m-menu{
    display:none;position:fixed;inset:auto 0 auto 0;top:0;z-index:99;
    background:var(--ink);padding:14px 6vw 24px;
  }
  .m-menu.open{display:block;position:static}
  .m-menu a{display:block;color:#fff;text-decoration:none;font-weight:700;font-size:15px;padding:11px 0;text-transform:uppercase;letter-spacing:.06em}
  .m-menu .sub a{font-weight:500;text-transform:none;letter-spacing:0;padding:8px 0 8px 18px;color:#B9C1CC}
  .split{grid-template-columns:1fr}
  .split .pane{padding:54px 6vw}
  .tiles{grid-template-columns:repeat(2,1fr)}
  .pgrid{grid-template-columns:repeat(2,1fr);gap:12px}
  .others .tiles{grid-template-columns:repeat(2,1fr)}
  footer .cols{grid-template-columns:1fr;gap:28px;padding:44px 6vw 28px}
  .hero{min-height:62vh}
  section{padding:56px 0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .tile img,.pcard,.btn,.ch{transition:none}
}