/* ==========================================================================
   RECO AI LAB — shared stylesheet for cam-nang.html & luyen-tap.html
   ========================================================================== */

:root{
  --blue-900:#062038;
  --blue-800:#0A3459;
  --blue-700:#0A5597;
  --blue-600:#1571BB;
  --blue-500:#2E8FD6;
  --blue-100:#DCEAF6;
  --blue-50:#F1F7FC;

  --orange-700:#C25E0C;
  --orange-600:#F5831F;
  --orange-500:#FF9C3D;
  --orange-100:#FCE3C7;
  --orange-50:#FFF6EC;

  --ink:#15212F;
  --muted:#5C6B7A;
  --muted-2:#8593A1;
  --line:#E3E9EF;
  --paper:#FFFFFF;
  --paper-alt:#F6F9FC;
  --success:#1F9D6F;
  --success-bg:#E9F8F1;

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:24px;
  --shadow-sm:0 1px 2px rgba(6,32,56,.06);
  --shadow-md:0 10px 30px rgba(6,32,56,.09);
  --shadow-lg:0 20px 50px rgba(6,32,56,.14);
  --maxw:1160px;
  --header-h:76px;
  --bottomnav-h:60px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;overflow-x:hidden;}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:"Be Vietnam Pro","Inter",sans-serif;
  font-weight:800;
  color:var(--blue-900);
  margin:0 0 .5em;
  line-height:1.16;
  letter-spacing:-.01em;
}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--blue-700);}
ul,ol{margin:0 0 1em;padding-left:1.3em;}
ul:last-child,ol:last-child{margin-bottom:0;}
li{margin-bottom:.45em;}
li:last-child{margin-bottom:0;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
.container{
  max-width:var(--maxw);margin:0 auto;
  padding-left:max(24px, env(safe-area-inset-left) + 16px);
  padding-right:max(24px, env(safe-area-inset-right) + 16px);
}
section[id]{scroll-margin-top:calc(var(--header-h) + 18px);}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:-999px;top:auto;
  background:var(--blue-900);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;z-index:999;
}
.skip-link:focus{left:0;top:0;}

/* ---------- top bar (utility) ---------- */
.topbar{
  background:var(--blue-900);
  color:#cfe0f0;
  font-size:.82rem;
}
.topbar .container{
  display:flex;align-items:center;justify-content:space-between;
  height:36px;
  gap:12px;
}
.topbar .topbar-note{display:flex;align-items:center;gap:8px;}
.topbar .topbar-note svg{flex:none;opacity:.85;}
.topbar a.switch-link{
  color:#fff;font-weight:600;text-decoration:none;display:flex;align-items:center;gap:6px;
}
.topbar a.switch-link:hover{color:var(--orange-500);}

/* ---------- header / nav ---------- */
header.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  height:var(--header-h);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:100%;
}
.brandmark{
  display:flex;align-items:center;gap:12px;flex:none;
  min-width:0;
  text-decoration:none;
}
.brandmark img{height:30px;width:auto;flex:none;}
.brandmark .divider{width:1px;height:26px;background:var(--line);flex:none;}
.brandmark img.logo-reco{height:34px;}
.brandmark .brand-title{
  font-family:"Be Vietnam Pro","Inter",sans-serif;
  font-weight:800;font-size:1rem;color:var(--blue-900);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

nav.quicknav{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  align-items:center;
  gap:6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(to right, transparent 0, #000 28px, #000 calc(100% - 28px), transparent 100%);
  mask-image:linear-gradient(to right, transparent 0, #000 28px, #000 calc(100% - 28px), transparent 100%);
}
nav.quicknav::-webkit-scrollbar{display:none;}
nav.quicknav a{
  flex:none;
  font-size:.86rem;
  font-weight:600;
  color:var(--muted);
  text-decoration:none;
  padding:8px 13px;
  border-radius:999px;
  white-space:nowrap;
  transition:background .15s ease, color .15s ease;
}
nav.quicknav a:hover{background:var(--blue-50);color:var(--blue-700);}
nav.quicknav a.active{background:var(--blue-700);color:#fff;}

.header-actions{display:flex;align-items:center;gap:10px;flex:none;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:.9rem;
  padding:10px 18px;
  border-radius:999px;
  text-decoration:none;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--orange-600);color:#fff;box-shadow:0 6px 16px rgba(245,131,31,.28);}
.btn-primary:hover{background:var(--orange-700);}
.btn-outline{background:transparent;border-color:var(--blue-700);color:var(--blue-700);}
.btn-outline:hover{background:var(--blue-50);}
.btn-ghost{background:var(--blue-50);color:var(--blue-700);}
.btn-ghost:hover{background:var(--blue-100);}
.btn-sm{padding:7px 14px;font-size:.82rem;}

.menu-toggle{
  display:none;
  flex:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1.5px solid var(--line);
  background:#fff;
  align-items:center;justify-content:center;
  cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--blue-900);position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--blue-900);transition:transform .2s ease;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.menu-toggle.is-open span{background:transparent;}
.menu-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

.mobile-panel-backdrop{
  position:fixed;inset:0;
  background:rgba(6,32,56,.45);
  z-index:140;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
}
.mobile-panel-backdrop.is-open{opacity:1;pointer-events:auto;}

.mobile-panel{
  position:fixed;top:0;right:0;bottom:0;
  width:66.6667vw;max-width:320px;
  background:#fff;
  z-index:150;
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  padding:calc(var(--header-h) + 10px) 0 32px;
  box-shadow:-10px 0 30px rgba(6,32,56,.18);
  transform:translateX(100%);
  visibility:hidden;
  transition:transform .28s ease, visibility .28s;
}
.mobile-panel.is-open{
  transform:translateX(0);
  visibility:visible;
}
.mobile-panel .container{
  display:flex;flex-direction:column;gap:4px;
  max-width:none;margin:0;
  padding-left:20px;padding-right:20px;
}
.mobile-panel a{
  padding:14px 6px;
  font-weight:700;
  color:var(--blue-900);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  font-size:1.02rem;
}
.mobile-panel .mp-switch{
  margin-top:18px;
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,var(--blue-50) 0%, #fff 72%);
  padding:64px 0 40px;
}
.hero-skyline{
  position:absolute;left:0;right:0;bottom:0;height:180px;
  opacity:.55;
  pointer-events:none;
}
.hero-blob{
  position:absolute;
  border-radius:50%;
  filter:blur(60px);
  opacity:.35;
  pointer-events:none;
}
.hero-blob.b1{width:420px;height:420px;background:var(--orange-500);top:-160px;right:-120px;}
.hero-blob.b2{width:360px;height:360px;background:var(--blue-500);bottom:-180px;left:-140px;opacity:.25;}

.hero-inner{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8rem;font-weight:700;color:var(--blue-700);
  background:var(--blue-100);
  padding:7px 14px;border-radius:999px;
  margin-bottom:22px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--orange-600);}

.hero h1{font-size:clamp(2rem,1.2rem + 3.2vw,3.4rem);max-width:16ch;}
.hero .lede{
  font-size:clamp(1.02rem,.95rem + .4vw,1.2rem);
  color:var(--muted);
  max-width:56ch;
  margin-top:14px;
}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}

.principle-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
  margin-top:44px;
}
.principle-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 20px;
  box-shadow:var(--shadow-sm);
}
.principle-card .p-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;
  background:var(--blue-700);color:#fff;font-weight:800;font-size:.85rem;
  margin-bottom:12px;
}
.principle-card h3{font-size:1rem;margin-bottom:4px;letter-spacing:.01em;}
.principle-card p{color:var(--muted);font-size:.92rem;margin:0;}

.golden-rule{
  margin-top:20px;
  background:var(--blue-900);
  color:#eaf2fa;
  border-radius:var(--radius-md);
  padding:18px 22px;
  font-weight:600;
  font-size:.98rem;
  display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;
}
.golden-rule .gr-label{
  font-family:"Be Vietnam Pro",sans-serif;font-weight:800;color:var(--orange-500);
  font-size:.78rem;letter-spacing:.04em;
}
.golden-rule .arrow{color:var(--blue-500);}

/* ---------- quick lookup grid ---------- */
.quicklinks{
  padding:56px 0 8px;
}
.section-kicker{
  display:flex;align-items:baseline;gap:12px;margin-bottom:8px;flex-wrap:wrap;
}
.section-kicker h2{margin-bottom:0;}
.section-kicker .kicker-note{color:var(--muted);font-size:.95rem;}

.grid-cards{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px;
}
.jump-card{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--paper-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:18px;
  text-decoration:none;
  color:var(--ink);
  transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.jump-card:hover{border-color:var(--blue-600);transform:translateY(-2px);box-shadow:var(--shadow-sm);}
.jump-card .jc-ico{
  flex:none;width:40px;height:40px;border-radius:10px;
  background:var(--blue-700);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;
}
.jump-card strong{display:block;font-size:.98rem;color:var(--blue-900);margin-bottom:3px;}
.jump-card span{font-size:.88rem;color:var(--muted);}

/* ---------- usage rules callout ---------- */
.rules-row{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:40px;
}
.callout{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:20px 22px;
  background:#fff;
}
.callout h3{font-size:1rem;margin-bottom:10px;display:flex;align-items:center;gap:8px;}
.callout h3 svg{flex:none;color:var(--orange-600);}
.callout ul{padding-left:1.15em;color:var(--muted);font-size:.94rem;}
.callout ul li{margin-bottom:.5em;}
.callout strong{color:var(--ink);}

/* ---------- main sections ---------- */
main{padding-bottom:40px;}
.phase{
  padding:52px 0;
  border-top:1px solid var(--line);
}
.phase:nth-of-type(odd){background:var(--paper-alt);}
.phase-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:10px;}
.phase-num{
  flex:none;
  width:46px;height:46px;border-radius:13px;
  background:var(--blue-900);
  color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"Be Vietnam Pro",sans-serif;font-weight:800;font-size:1.15rem;
}
.phase-head h2{font-size:clamp(1.35rem,1.1rem + .8vw,1.85rem);margin-bottom:4px;}
.phase-head .phase-sub{color:var(--muted);font-size:.98rem;}
.phase-body{margin-top:26px;}
.phase-body>*+*{margin-top:26px;}

.subhead{
  font-size:1.02rem;font-weight:700;color:var(--blue-900);
  margin:0 0 12px;
  padding-bottom:8px;
  border-bottom:2px solid var(--blue-100);
}

.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;}
.two-col.reverse{grid-template-columns:.9fr 1.1fr;}

/* scenario data card (giả lập / dữ liệu ví dụ) */
.data-card{
  background:var(--blue-50);
  border:1px dashed var(--blue-500);
  border-radius:var(--radius-md);
  padding:18px 20px;
  font-size:.96rem;
  color:var(--blue-900);
}
.data-card .dc-label{
  font-weight:800;font-size:.76rem;letter-spacing:.05em;color:var(--blue-700);
  margin-bottom:8px;display:block;
}
.data-card .dc-note{
  margin-top:10px;font-size:.86rem;color:var(--muted);font-style:italic;
}

/* ---------- copy block ---------- */
.copy-block{
  position:relative;
  background:#fff;
  border:1px solid var(--blue-100);
  border-left:4px solid var(--blue-700);
  border-radius:var(--radius-md);
  padding:20px 20px 18px;
  box-shadow:var(--shadow-sm);
}
.copy-block-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-bottom:14px;
}
.copy-block-tag{
  display:inline-flex;align-items:center;gap:7px;
  font-size:.74rem;font-weight:800;letter-spacing:.04em;
  color:var(--blue-700);
  background:var(--blue-50);
  padding:5px 11px;border-radius:999px;
}
.copy-btn{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--blue-900);color:#fff;
  border:none;border-radius:999px;
  padding:8px 16px;font-size:.82rem;font-weight:700;
  cursor:pointer;
  transition:background .15s ease, transform .1s ease;
  flex:none;
}
.copy-btn:hover{background:var(--blue-700);}
.copy-btn:active{transform:scale(.96);}
.copy-btn.is-copied{background:var(--success);}
.copy-btn svg{flex:none;}

.copy-block-text{
  font-size:.98rem;
  color:var(--ink);
  white-space:pre-wrap;
  line-height:1.75;
}
.copy-block-text .ph{
  color:var(--orange-700);
  background:var(--orange-50);
  padding:0 4px;
  border-radius:4px;
  font-weight:600;
}
.copy-block-foot{
  margin-top:12px;font-size:.82rem;color:var(--muted-2);
}

/* result sample card */
.sample{
  background:var(--success-bg);
  border:1px solid #bfe6d5;
  border-radius:var(--radius-md);
  padding:16px 20px;
}
.sample-label{
  display:flex;align-items:center;gap:7px;
  font-size:.78rem;font-weight:800;letter-spacing:.03em;color:var(--success);
  margin-bottom:10px;
}
.sample p,.sample li{color:#245c47;}
.sample ul{margin:0;padding-left:1.1em;}

/* generic checklist card */
.checklist{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:18px 20px;
}
.checklist-title{font-weight:700;color:var(--blue-900);margin-bottom:10px;font-size:.98rem;}
.checklist ul{list-style:none;padding:0;margin:0;}
.checklist li{
  display:flex;gap:10px;align-items:flex-start;
  padding:7px 0;
  border-bottom:1px dashed var(--line);
  font-size:.94rem;color:var(--ink);
}
.checklist li:last-child{border-bottom:none;}
.checklist li svg{flex:none;margin-top:3px;color:var(--blue-600);}

/* fix suggestions list (mini copy chips) */
.fixlist{display:grid;gap:10px;}
.fixitem{
  display:grid;grid-template-columns:150px 1fr auto;gap:12px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;
}
.fixitem .fi-label{font-weight:700;font-size:.86rem;color:var(--blue-900);}
.fixitem .fi-text{font-size:.9rem;color:var(--muted);}
.fixitem .copy-btn{padding:6px 12px;font-size:.76rem;}

/* steps / ordered process */
.steps{counter-reset:step;list-style:none;padding:0;margin:0;display:grid;gap:12px;}
.steps li{
  counter-increment:step;
  position:relative;
  padding:4px 0 4px 40px;
  font-size:.96rem;
}
.steps li::before{
  content:counter(step);
  position:absolute;left:0;top:0;
  width:28px;height:28px;border-radius:50%;
  background:var(--blue-100);color:var(--blue-700);
  font-weight:800;font-size:.82rem;
  display:flex;align-items:center;justify-content:center;
}

/* table-ish quote/dialogue */
.dialogue{
  display:grid;gap:10px;
}
.dialogue .line{
  display:grid;grid-template-columns:96px 1fr;gap:14px;
  padding:10px 0;
  border-bottom:1px solid var(--line);
  font-size:.95rem;
}
.dialogue .line:last-child{border-bottom:none;}
.dialogue .who{font-weight:800;font-size:.78rem;letter-spacing:.03em;padding-top:2px;}
.dialogue .who.ai{color:var(--orange-700);}
.dialogue .who.sale{color:var(--blue-700);}

/* quote */
blockquote{
  margin:0;
  padding:14px 18px;
  border-left:3px solid var(--orange-500);
  background:var(--orange-50);
  border-radius:0 10px 10px 0;
  font-style:italic;
  color:var(--ink);
}

/* scenario grid (6 tình huống) */
.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.scenario-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  padding:20px;scroll-margin-top:calc(var(--header-h) + 18px);
}
.scenario-card .sc-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:8px;
  background:var(--orange-100);color:var(--orange-700);
  font-weight:800;font-size:.8rem;margin-bottom:10px;
}
.scenario-card h3{font-size:1.02rem;margin-bottom:8px;}
.scenario-card blockquote{margin-bottom:12px;font-size:.94rem;}
.scenario-card .sc-hidden{font-size:.88rem;color:var(--muted);}
.scenario-card .sc-hidden b{color:var(--ink);}

/* timeline */
.timeline{display:grid;gap:0;border-left:2px solid var(--blue-100);margin-left:6px;}
.timeline .t-item{position:relative;padding:0 0 22px 26px;}
.timeline .t-item:last-child{padding-bottom:0;}
.timeline .t-item::before{
  content:"";position:absolute;left:-7px;top:2px;width:12px;height:12px;border-radius:50%;
  background:var(--blue-700);border:2px solid #fff;box-shadow:0 0 0 2px var(--blue-100);
}
.timeline .t-time{font-weight:800;color:var(--blue-700);font-size:.84rem;margin-bottom:3px;}
.timeline .t-text{font-size:.92rem;color:var(--muted);}

/* org modes cards */
.org-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.org-card{
  border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 18px;background:#fff;
}
.org-card .oc-time{font-weight:800;color:var(--orange-700);font-size:.82rem;margin-bottom:6px;}
.org-card p{font-size:.92rem;color:var(--muted);margin:0;}

/* levels (ba mức đánh giá) */
.level-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.level-card{border-radius:var(--radius-md);padding:16px 18px;font-size:.92rem;}
.level-card.l1{background:#FDEEEE;border:1px solid #F3C9C9;color:#8A3232;}
.level-card.l2{background:#FFF6EC;border:1px solid var(--orange-100);color:#8A5A18;}
.level-card.l3{background:var(--success-bg);border:1px solid #bfe6d5;color:#245c47;}
.level-card .lc-title{font-weight:800;margin-bottom:6px;font-size:.86rem;}

/* footer */
footer{
  background:var(--blue-900);
  color:#c9d9e8;
  padding:48px 0 28px;
}
.footer-top{
  display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
  padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:14px;}
.footer-brand img{height:28px;}
.footer-brand .fb-divider{width:1px;height:24px;background:rgba(255,255,255,.25);}
.footer-principle{
  margin-top:24px;
  font-size:.95rem;color:#dce7f1;
  max-width:70ch;
}
.footer-principle strong{color:#fff;}
.footer-bottom{
  margin-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.82rem;color:#8fa5ba;
}
footer a{color:#cfe0f0;}
.footer-switch{display:flex;gap:10px;flex-wrap:wrap;}

.back-to-top{
  position:fixed;right:20px;bottom:20px;z-index:90;
  width:46px;height:46px;border-radius:50%;
  background:var(--blue-900);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);
  text-decoration:none;
  opacity:0;pointer-events:none;
  transition:opacity .2s ease, transform .2s ease;
}
.back-to-top.visible{opacity:1;pointer-events:auto;}
.back-to-top:hover{transform:translateY(-2px);}

/* toast */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);
  background:var(--blue-900);color:#fff;
  padding:12px 20px;border-radius:999px;
  font-size:.88rem;font-weight:600;
  box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;
  transition:opacity .2s ease, transform .2s ease;
  z-index:200;
  display:flex;align-items:center;gap:8px;
}
.toast.show{opacity:1;transform:translate(-50%,0);}
.toast svg{color:#4ee6a4;flex:none;}

/* utility */
.mt-0{margin-top:0;}
.text-muted{color:var(--muted);}
.small{font-size:.86rem;}
.center{text-align:center;}

/* ---------- responsive ---------- */
@media (max-width:960px){
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .rules-row{grid-template-columns:1fr;}
  .two-col,.two-col.reverse{grid-template-columns:1fr;}
  .scenario-grid{grid-template-columns:1fr;}
  .org-grid{grid-template-columns:1fr;}
  .level-row{grid-template-columns:1fr;}
  .principle-strip{grid-template-columns:1fr;}
}
@media (max-width:760px){
  :root{--header-h:64px;}
  body{padding-top:var(--header-h);}
  header.site-header{
    position:fixed;top:0;left:0;right:0;width:100%;
  }
  nav.quicknav{display:none;}
  .menu-toggle{display:flex;}
  .header-actions .btn-outline{display:none;}
  .hero{padding:36px 0 28px;}
  .hero-ctas{flex-direction:column;align-items:stretch;}
  .hero-ctas .btn{justify-content:center;}
  .grid-cards{grid-template-columns:1fr;}
  .fixitem{grid-template-columns:1fr;}
  .fixitem .copy-btn{justify-self:start;}
  .dialogue .line{grid-template-columns:1fr;gap:4px;}
  .topbar .container{height:auto;min-height:36px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap;row-gap:4px;}
  .topbar .topbar-note{font-size:.76rem;}
  .footer-top{flex-direction:column;align-items:flex-start;}
  .brandmark{gap:8px;}
  .brandmark img{height:24px;}
  .brandmark img.logo-reco{height:28px;}
  .brandmark .brand-title{
    position:absolute;left:50%;top:50%;
    transform:translate(-50%,-50%);
    max-width:calc(100vw - 160px);
    font-size:.92rem;
  }
  body{padding-bottom:calc(var(--bottomnav-h) + env(safe-area-inset-bottom));}
  .back-to-top{bottom:calc(20px + var(--bottomnav-h) + env(safe-area-inset-bottom));}
  .bottom-nav{display:grid;}
}
/* ---------- bottom nav (mobile only) ---------- */
.bottom-nav{
  display:none;
  position:fixed;left:0;right:0;bottom:0;
  grid-template-columns:1fr 1fr;
  min-height:var(--bottomnav-h);
  background:#fff;
  border-top:1px solid var(--line);
  box-shadow:0 -4px 16px rgba(6,32,56,.07);
  z-index:120;
  padding-bottom:env(safe-area-inset-bottom);
}
.bn-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  padding:9px 4px 8px;
  color:var(--muted);
  text-decoration:none;
  font-size:.72rem;font-weight:700;
  border-right:1px solid var(--line);
}
.bn-item:last-child{border-right:none;}
.bn-item svg{flex:none;}
.bn-item.active{color:var(--blue-700);}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}