/* The Skin Intelligence — European Luxury Scientific Editorial. Bảng màu theo đề án. */
:root{
  --ivory:#F2EDE4; --sand:#D1C6B8; --teal:#2B515A; --marine:#18333F; --silver:#A6A8A3;
  --paper:#FBF9F5; --ink:#1A2A31; --muted:#5F6A6C; --line:#E2DACD; --gold:#A8875A; --warn:#8C3B32;
  --serif:'Cormorant Garamond',Cambria,Georgia,serif; --sans:'Be Vietnam Pro','Segoe UI',Arial,sans-serif;
  --r:16px; --sh:0 14px 40px rgba(24,51,63,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16.5px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--teal);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
.narrow{max-width:780px;margin:0 auto}
h1,h2,h3{font-family:var(--serif);color:var(--marine);font-weight:600;line-height:1.12;margin:0 0 .45em}
h1{font-size:clamp(36px,5.4vw,64px)}
h2{font-size:clamp(28px,3.4vw,42px)}
h3{font-size:24px}
p{margin:0 0 1em}
.kicker{font:600 12px/1.7 var(--sans);letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.lead{font-size:19px;color:#3A4A50;max-width:760px}
.muted{color:var(--muted)}
section{padding:76px 0}
.rule{height:1px;background:var(--line);margin:40px 0}

/* header */
.top{position:sticky;top:0;z-index:40;background:rgba(251,249,245,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0)}
.top-in{display:flex;align-items:center;justify-content:space-between;height:74px;gap:14px}
.brand{display:flex;align-items:center;gap:12px}
.pearl{width:34px;height:34px;border-radius:50%;background:radial-gradient(circle at 32% 30%,#fff 0,#F5F1EA 22%,#D9D2C6 55%,#A6A8A3 100%);box-shadow:inset -3px -4px 8px rgba(0,0,0,.12),0 2px 8px rgba(24,51,63,.18);flex:none}
.brand-t{display:flex;flex-direction:column;line-height:1.1}
.brand-t b{font:600 22px var(--serif);color:var(--marine);letter-spacing:.01em}
.brand-t small{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.nav{display:flex;gap:4px;align-items:center}
.nav a{padding:8px 12px;border-radius:999px;font-size:14px;font-weight:500;color:var(--ink);white-space:nowrap}
.nav a:hover,.nav a.act{background:var(--ivory)}
.nav a.cta{background:var(--marine);color:#fff}
.menu-btn{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.menu-btn span{display:block;height:2px;background:var(--marine);margin:6px 8px}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(120% 90% at 78% 30%,#2B515A 0,#18333F 55%,#0F2129 100%);padding:96px 0 110px}
.hero:before{content:'';position:absolute;inset:auto -10% -40% -10%;height:70%;background:radial-gradient(60% 50% at 50% 0,rgba(209,198,184,.18),transparent 70%)}
.hero .waves{position:absolute;left:0;right:0;bottom:0;opacity:.35}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{color:#fff}
.hero h1 em{font-style:italic;color:var(--sand)}
.hero .lead{color:rgba(255,255,255,.82)}
.big-pearl{width:min(380px,80%);aspect-ratio:1;margin:auto;border-radius:50%;background:radial-gradient(circle at 34% 30%,#fff 0,#F6F2EB 18%,#E2DBCF 42%,#B9B6AE 72%,#7E8582 100%);box-shadow:inset -22px -30px 60px rgba(0,0,0,.25),inset 14px 16px 30px rgba(255,255,255,.6),0 40px 90px rgba(0,0,0,.45);position:relative}
.big-pearl:after{content:'';position:absolute;left:22%;top:16%;width:22%;height:14%;border-radius:50%;background:rgba(255,255,255,.75);filter:blur(6px)}
.search-hero{display:flex;gap:10px;margin-top:28px;max-width:600px}
.search-hero input{flex:1;padding:16px 22px;border-radius:999px;border:0;font:16px var(--sans);background:rgba(255,255,255,.95)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:999px;font:600 15px var(--sans);border:1.5px solid var(--marine);color:var(--marine);background:transparent;cursor:pointer}
.btn.solid{background:var(--marine);color:#fff}
.btn.light{background:var(--sand);border-color:var(--sand);color:var(--marine)}
.btn.sm{padding:8px 16px;font-size:13.5px}
.qs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.qs a{color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.28);padding:8px 15px;border-radius:999px;font-size:14px}
.qs a:hover{background:rgba(255,255,255,.1)}

/* grids & cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}.g5{grid-template-columns:repeat(5,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;position:relative;transition:.2s}
a.card{color:var(--ink)}
a.card:hover{transform:translateY(-3px);box-shadow:var(--sh);border-color:var(--sand)}
.cm{padding:26px;border-radius:20px;color:#fff;min-height:190px;display:flex;flex-direction:column;justify-content:space-between}
.cm .n{font:600 46px/1 var(--serif);opacity:.5}
.cm h3{color:#fff;font-size:25px;margin:0}
.cm p{color:rgba(255,255,255,.82);margin:6px 0 0;font-size:14.5px}
.pill{display:inline-block;font:600 11.5px var(--sans);letter-spacing:.06em;padding:4px 11px;border-radius:999px;background:var(--ivory);color:var(--teal)}
.pill.ok{background:#E3EEE6;color:#2E5E44}
.pill.wait{background:#F4EAD9;color:#8A6A33}
.chip{display:inline-block;padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;margin:0 6px 8px 0;cursor:pointer;color:var(--ink)}
.chip.on{background:var(--marine);color:#fff;border-color:var(--marine)}
.list-row{display:grid;grid-template-columns:54px 1fr auto;gap:14px;align-items:center;padding:14px 4px;border-bottom:1px solid var(--line)}
.list-row .no{font:600 22px var(--serif);color:var(--silver)}
.list-row b{font-weight:500}

/* article */
.art-head{background:var(--ivory);padding:58px 0 40px;border-bottom:1px solid var(--line)}
.art-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px;font-size:13.5px;color:var(--muted)}
.question{font:500 italic 24px/1.4 var(--serif);color:var(--teal);border-left:3px solid var(--gold);padding-left:18px;margin:18px 0 0}
.box3{background:var(--marine);color:#fff;border-radius:22px;padding:28px 32px;margin:34px 0}
.box3 h3{color:var(--sand);font-size:22px}
.box3 li{margin:6px 0}
.toc{position:sticky;top:96px;font-size:14px}
.toc a{display:block;padding:6px 0;color:var(--muted);border-left:2px solid var(--line);padding-left:12px}
.toc a:hover{color:var(--marine);border-color:var(--gold)}
.art-grid{display:grid;grid-template-columns:1fr 230px;gap:50px}
.art h2{font-size:32px;margin-top:44px}
.art ul{padding-left:20px}
.art li{margin:5px 0}
.diagram{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;margin:26px 0}
.diagram figcaption{font-size:13.5px;color:var(--muted);text-align:center;margin-top:8px}
.warn{background:#FBF1EE;border:1px solid #EBCFC8;border-radius:16px;padding:20px 24px;margin:18px 0}
.warn h3{color:var(--warn);font-size:21px}
.dont{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 24px}
.example{background:var(--ivory);border-radius:16px;padding:22px 26px;font-size:16px}
.mac{display:grid;grid-template-columns:86px 1fr;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;margin:10px 0}
.mac img{width:86px;height:86px;object-fit:contain}
.mac .cond{font-size:13.5px;color:#8A6A33}
.quiz .q{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;margin:12px 0}
.quiz button{display:block;width:100%;text-align:left;background:var(--paper);border:1.5px solid var(--line);border-radius:12px;padding:11px 14px;margin:7px 0;font:15px var(--sans);cursor:pointer;color:var(--ink)}
.quiz button.dung{border-color:#4D8B67;background:#EEF6F0}
.quiz button.sai{border-color:#C47A6E;background:#FBEFEC}
.quiz .g{font-size:14px;color:var(--muted);margin-top:6px}
.sources{font-size:13.5px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:30px}

/* protocol */
.proto-head{color:#fff;border-radius:24px;padding:40px;margin:24px 0}
.proto-head h1{color:#fff;font-size:clamp(30px,4.2vw,48px)}
.day{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line)}
.day b{font-family:var(--serif);font-size:20px;color:var(--gold)}
.routine{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.routine ol{margin:0;padding-left:22px}

/* table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff}
table.tbl{border-collapse:collapse;width:100%;font-size:14.5px}
.tbl th{background:var(--marine);color:#fff;text-align:left;padding:12px 14px;font-weight:600}
.tbl td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl tr:nth-child(even) td{background:#FAF7F2}

/* product */
.sp{padding:0;overflow:hidden;display:flex;flex-direction:column}
.sp .im{aspect-ratio:1;background:#fff;display:grid;place-items:center;padding:16px;border-bottom:1px solid var(--line)}
.sp .im img{max-height:100%;object-fit:contain}
.sp .bd{padding:14px 16px}
.sp .bd b{display:block;color:var(--marine);line-height:1.35}
.sp .bd small{color:var(--muted)}
.dl{display:grid;grid-template-columns:170px 1fr;gap:10px 20px}
.dl dt{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);font-weight:600;padding-top:3px}
.dl dd{margin:0}

/* tools */
.tool-out{background:var(--marine);color:#fff;border-radius:20px;padding:26px}
.tool-out h3{color:var(--sand)}
.select-row{display:flex;flex-wrap:wrap;gap:10px}
.search{width:100%;padding:15px 20px;border-radius:999px;border:1.5px solid var(--line);font:16px var(--sans);background:#fff}
.search:focus{outline:none;border-color:var(--gold)}
.lvl{display:inline-block;width:30px;height:30px;border-radius:50%;background:var(--marine);color:#fff;text-align:center;line-height:30px;font-weight:600;margin-right:10px}

/* footer */
.foot{background:var(--marine);color:rgba(255,255,255,.75);padding:60px 0 22px;margin-top:50px}
.foot-in{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:30px;font-size:14.5px}
.foot h4{color:#fff;font:600 14px var(--sans);letter-spacing:.08em;text-transform:uppercase;margin:0 0 12px}
.foot a{display:block;color:rgba(255,255,255,.75);margin:6px 0}
.foot .brand-t b{color:#fff}
.foot p{color:rgba(255,255,255,.65)}
.foot-end{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:16px;font-size:13px}
.fade{animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.crumb{font-size:13.5px;color:var(--muted);padding-top:22px}
.crumb a{color:var(--gold)}

@media (max-width:980px){
  .hero-grid,.art-grid,.routine{grid-template-columns:1fr}
  .toc{display:none}
  .g4,.g5{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
  .foot-in{grid-template-columns:1fr 1fr}
  .big-pearl{width:220px}
}
@media (max-width:760px){
  .menu-btn{display:block}
  .nav{position:fixed;inset:74px 0 auto 0;background:var(--paper);flex-direction:column;align-items:stretch;padding:14px 18px 22px;border-bottom:1px solid var(--line);display:none}
  body.nav-open .nav{display:flex}
  .g2,.g3{grid-template-columns:1fr}
  .g4,.g5{grid-template-columns:repeat(2,1fr);gap:12px}
  section{padding:50px 0}
  .hero{padding:60px 0 80px}
  .dl,.day{grid-template-columns:1fr}
  .proto-head{padding:26px}
  .foot-in{grid-template-columns:1fr}
  .list-row{grid-template-columns:40px 1fr}
  .list-row .pill{grid-column:2}
}
.brand-t{white-space:nowrap}