/* ==========================================================================
   SmokeAlarm.com.cn — Design System
   AlertField · clean, editorial, western-minimal aesthetic
   Uses CSS logical properties so the whole site mirrors correctly in RTL (ar)
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  --ink:#0f1418;
  --ink-2:#3d4853;
  --ink-3:#6c7681;
  --ink-4:#98a1ab;
  --line:#e4e7eb;
  --line-2:#eef1f4;
  --bg:#ffffff;
  --bg-2:#f7f8fa;
  --bg-3:#eef1f5;
  --accent:#c63d2f;
  --accent-2:#e2664a;
  --accent-soft:#fdf2ef;
  --navy:#11324c;
  --navy-soft:#eef3f8;
  --ok:#17724a;
  --ok-soft:#eef8f2;
  --warn:#a9761a;
  --warn-soft:#fdf6e9;
  --radius:16px;
  --radius-sm:11px;
  --radius-lg:26px;
  --shadow-sm:0 1px 2px rgba(15,20,24,.05);
  --shadow:0 10px 34px -16px rgba(15,20,24,.15);
  --shadow-lg:0 36px 84px -36px rgba(15,20,24,.26);
  --wrap:1240px;
  --wrap-narrow:780px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,
         "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",
         "Noto Naskh Arabic","Segoe UI Historic",Tahoma,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gutter:clamp(20px,4vw,40px);
}

/* ---------- 2. Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:17px;line-height:1.72;
  font-feature-settings:"kern" 1,"liga" 1;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4,h5{margin:0 0 .5em;line-height:1.16;letter-spacing:-.024em;font-weight:680;color:var(--ink)}
h1{font-size:clamp(2.15rem,1.35rem + 2.9vw,3.75rem);letter-spacing:-.032em}
h2{font-size:clamp(1.62rem,1.15rem + 1.7vw,2.45rem);letter-spacing:-.028em}
h3{font-size:clamp(1.19rem,1.06rem + .5vw,1.48rem)}
h4{font-size:1.04rem;letter-spacing:-.012em}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.05em;padding-inline-start:1.25em}
li{margin:0 0 .5em}
li::marker{color:var(--accent)}
strong{font-weight:680;color:var(--ink)}
hr{border:0;border-top:1px solid var(--line);margin:3rem 0}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:#fff}

.skip{position:absolute;inset-inline-start:-9999px;top:0;z-index:200;background:var(--ink);color:#fff;
  padding:.7rem 1.1rem;border-radius:0 0 var(--radius-sm) var(--radius-sm)}
.skip:focus{inset-inline-start:1rem}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap-n{max-width:var(--wrap-narrow)}
.section{padding-block:clamp(4rem,7vw,7rem)}
.section.tight{padding-block:clamp(2.6rem,4.5vw,3.8rem)}
.section--alt{background:var(--bg-2);border-block:1px solid var(--line-2)}
.section--ink{background:var(--ink);color:#e9edf1}
.section--ink h2,.section--ink h3{color:#fff}
.section--ink a{color:#fff}
.section--navy{background:var(--navy);color:#e6eef5}
.section--navy h2,.section--navy h3{color:#fff}
.section--navy a{color:#fff}
.eyebrow{
  display:inline-flex;align-items:center;gap:.55rem;
  font-size:.73rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin:0 0 1rem;
}
.eyebrow::before{content:"";width:30px;height:2px;background:currentColor;display:block;border-radius:2px}
.lede{font-size:clamp(1.06rem,1rem + .42vw,1.3rem);line-height:1.62;color:var(--ink-2);max-width:64ch}
.muted{color:var(--ink-3)}
.small{font-size:.87rem;line-height:1.62}
.center{text-align:center}
.center .lede{margin-inline:auto}
.stack>*+*{margin-top:1rem}

.grid{display:grid;gap:clamp(20px,2.4vw,28px)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split.rev>*:first-child{order:2}
/* a section whose other column was removed reads as one calm measure */
.solo{max-width:var(--wrap-narrow)}
.solo>div>*:last-child{margin-bottom:0}
.pad-t{margin-top:2.8rem}
.pad-t-s{margin-top:1.4rem}

/* ---------- 4. Header ---------- */
.topbar{
  background:var(--ink);color:#c9d2da;font-size:.8rem;letter-spacing:.01em;
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:1rem;min-height:38px;flex-wrap:wrap}
.topbar a{color:#e7edf2}
.topbar a:hover{color:#fff}
.topbar .tb-l{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:#4ec48a;display:inline-block;margin-inline-end:.45rem}

.hdr{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(16px);-webkit-backdrop-filter:saturate(180%) blur(16px);
  border-block-end:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;justify-content:space-between;gap:1.6rem;min-height:78px}
.brand{display:flex;align-items:center;gap:.66rem;flex:0 0 auto}
.brand svg{width:32px;height:32px;flex:0 0 auto}
.brand b{font-weight:720;letter-spacing:-.032em;font-size:1.14rem;color:var(--ink)}
.brand b i{font-style:normal;color:var(--accent)}
.brand span{display:block;font-size:.63rem;letter-spacing:.17em;text-transform:uppercase;color:var(--ink-4);margin-top:-2px}

.nav{display:flex;align-items:center;gap:.2rem;flex-wrap:nowrap}
.nav a,.nav button.navlink{
  display:inline-block;padding:.55rem .72rem;font-size:.9rem;font-weight:560;color:var(--ink-2);
  border-radius:9px;background:none;border:0;cursor:pointer;white-space:nowrap;
}
.nav a:hover,.nav button.navlink:hover{background:var(--bg-3);color:var(--ink)}
.nav a[aria-current="page"]{color:var(--accent);font-weight:660}

.nav-item{position:relative}
.nav-item>button::after{content:"▾";font-size:.6rem;margin-inline-start:.34rem;opacity:.6}
.nav-menu{
  position:absolute;top:calc(100% + 10px);inset-inline-start:0;min-width:290px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);
  padding:.6rem;opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s var(--ease);
}
.nav-item:hover .nav-menu,.nav-item:focus-within .nav-menu{opacity:1;visibility:visible;transform:none}
.nav-menu a{display:block;padding:.58rem .78rem;border-radius:9px;font-size:.875rem;font-weight:520}
.nav-menu a small{display:block;color:var(--ink-4);font-size:.755rem;font-weight:400;letter-spacing:0;margin-top:.1rem}

.hdr-tools{display:flex;align-items:center;gap:.6rem;flex:0 0 auto}

/* language switcher */
.lang{position:relative}
.lang>button{
  display:inline-flex;align-items:center;gap:.42rem;background:#fff;border:1px solid var(--line);
  padding:.44rem .6rem;border-radius:9px;font-size:.82rem;font-weight:600;color:var(--ink-2);cursor:pointer;
}
.lang>button:hover{border-color:var(--ink-3)}
.lang>button svg{width:15px;height:15px;opacity:.7}
.lang-menu{
  position:absolute;top:calc(100% + 8px);inset-inline-end:0;min-width:212px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:.45rem;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.18s var(--ease);z-index:20;max-height:70vh;overflow:auto;
}
.lang.open .lang-menu{opacity:1;visibility:visible;transform:none}
.lang-menu a{display:flex;align-items:center;justify-content:space-between;gap:.6rem;padding:.5rem .68rem;
  border-radius:8px;font-size:.87rem;color:var(--ink-2)}
.lang-menu a:hover{background:var(--bg-2);color:var(--ink)}
.lang-menu a[aria-current="true"]{background:var(--navy-soft);color:var(--navy);font-weight:660}
.lang-menu a em{font-style:normal;font-size:.72rem;color:var(--ink-4)}

.burger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.burger i{display:block;width:17px;height:1.8px;background:var(--ink);border-radius:2px;transition:.2s}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:120;background:#fff;overflow-y:auto;padding:1.1rem 1.3rem 3rem;
  transform:translateX(-102%);transition:transform .3s var(--ease);
}
[dir="rtl"] .drawer{transform:translateX(102%)}
.drawer.open{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.2rem}
.drawer nav{display:block}
.drawer nav a{display:block;padding:.72rem .2rem;border-block-end:1px solid var(--line-2);
  font-size:1rem;font-weight:560;color:var(--ink)}
.drawer .dgroup{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-4);
  padding:1.1rem .2rem .3rem;font-weight:700}
.xbtn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:1rem;color:var(--ink-2)}
body.locked{overflow:hidden}

/* ---------- 5. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  padding:.8rem 1.45rem;border-radius:11px;font-size:.935rem;font-weight:620;
  border:1px solid transparent;cursor:pointer;transition:.18s var(--ease);text-align:center;line-height:1.2;
}
.btn svg{width:16px;height:16px;flex:0 0 auto}
.btn-p{background:var(--ink);color:#fff}
.btn-p:hover{background:#000;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-a{background:var(--accent);color:#fff}
.btn-a:hover{background:#ab3226;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-g{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-g:hover{border-color:var(--ink-3);color:var(--ink);transform:translateY(-1px)}
.btn-l{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-l:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{padding:.55rem .95rem;font-size:.84rem}
.btn-row{display:flex;gap:.8rem;flex-wrap:wrap}

/* ---------- 6. Cards ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.8rem 1.7rem 1.6rem;
  transition:.22s var(--ease);height:100%;display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px);border-color:#d8dde3}
.card h3{margin-bottom:.45rem}
.card p:last-child{margin-bottom:0}
.card .more{margin-top:auto;padding-top:1.1rem;font-size:.86rem;font-weight:640;color:var(--accent)}
.card-ic{
  width:48px;height:48px;border-radius:13px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin-bottom:1.15rem;flex:0 0 auto;
}
.card-ic svg{width:23px;height:23px}
.card-ic.blue{background:var(--navy-soft);color:var(--navy)}
.card-ic.green{background:var(--ok-soft);color:var(--ok)}
.card-ic.amber{background:var(--warn-soft);color:var(--warn)}
a.card{color:inherit}
a.card:hover{color:inherit}

/* numbered card */
.ncard{position:relative}
.ncard .num{font-family:var(--mono);font-size:.78rem;font-weight:700;color:var(--accent);letter-spacing:.08em}

/* stat */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.stat{background:#fff;padding:1.9rem 1.6rem}
.stat b{display:block;font-size:clamp(1.75rem,1.25rem + 1.7vw,2.6rem);letter-spacing:-.045em;color:var(--accent);line-height:1.05;font-weight:700}
.stat span{display:block;font-size:.845rem;color:var(--ink-3);margin-top:.55rem;line-height:1.5}

/* ---------- 7. Hero ---------- */
.hero{position:relative;background:
  radial-gradient(1100px 520px at 88% -12%,rgba(198,61,47,.085),transparent 62%),
  radial-gradient(900px 480px at 4% 4%,rgba(17,50,76,.065),transparent 60%),
  var(--bg);border-block-end:1px solid var(--line-2)}
.hero .wrap{padding-block:clamp(3.6rem,8vw,7.2rem)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2.2rem,5.5vw,4.6rem);align-items:center}
.hero h1{margin-bottom:1.1rem}
.hero .lede{margin-bottom:2rem}
.hero-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);
  background:var(--bg-3);aspect-ratio:4/3}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-badge{
  position:absolute;inset-block-end:1.1rem;inset-inline-start:1.1rem;background:rgba(255,255,255,.96);
  border-radius:14px;padding:.8rem 1.1rem;box-shadow:var(--shadow);backdrop-filter:blur(8px);max-width:82%;
}
.hero-badge b{display:block;font-size:.85rem;letter-spacing:-.01em}
.hero-badge span{font-size:.765rem;color:var(--ink-3);line-height:1.5;display:block;margin-top:.15rem}

.page-head{background:var(--bg-2);border-block-end:1px solid var(--line-2)}
.page-head .wrap{padding-block:clamp(2.6rem,5.6vw,4.6rem)}
.page-head h1{font-size:clamp(1.95rem,1.35rem + 2.2vw,3.05rem);margin-bottom:.75rem;max-width:34ch}
.page-head .lede{margin-bottom:0;color:var(--ink-2)}

.crumbs{font-size:.79rem;color:var(--ink-4);margin-bottom:1.1rem}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.42rem;padding:0;margin:0}
.crumbs li{margin:0;display:flex;align-items:center;gap:.42rem}
.crumbs li+li::before{content:"/";color:var(--ink-4)}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--accent)}
[dir="rtl"] .crumbs li+li::before{transform:scaleX(-1)}

/* ---------- 8. Callouts / prose ---------- */
.callout{
  border:1px solid var(--line);border-inline-start:4px solid var(--accent);
  background:var(--accent-soft);border-radius:var(--radius-sm);padding:1.2rem 1.45rem;margin-block:1.8rem;
}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}
.callout .ct{font-weight:700;font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:.5rem}
.callout.info{border-inline-start-color:var(--navy);background:var(--navy-soft)}
.callout.info .ct{color:var(--navy)}
.callout.ok{border-inline-start-color:var(--ok);background:var(--ok-soft)}
.callout.ok .ct{color:var(--ok)}
.callout.warn{border-inline-start-color:var(--warn);background:var(--warn-soft)}
.callout.warn .ct{color:var(--warn)}
.callout.plain{background:#fff}

.keyfacts{list-style:none;padding:0;margin:0;display:grid;gap:.6rem}
.keyfacts li{display:flex;gap:.7rem;margin:0;align-items:flex-start}
.keyfacts li::before{
  content:"";flex:0 0 auto;width:20px;height:20px;margin-top:.22rem;border-radius:50%;
  background:var(--ok-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2317724a' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/12px no-repeat;
}
.keyfacts.x li::before{background-color:var(--accent-soft);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c63d2f' stroke-width='3.4' stroke-linecap='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E")}

.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:1.35rem}
.steps li{counter-increment:s;position:relative;padding-inline-start:3.2rem;margin:0}
.steps li::before{
  content:counter(s);position:absolute;inset-inline-start:0;top:-.1rem;width:2.15rem;height:2.15rem;border-radius:50%;
  background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.86rem;font-weight:700;
}
.steps li b{display:block;margin-bottom:.2rem}

.quote{border:0;margin:2rem 0;padding-inline-start:1.4rem;border-inline-start:3px solid var(--accent);
  font-size:1.1rem;color:var(--ink-2);font-style:italic}

/* ---------- 9. Tables ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  -webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.9rem}
caption{caption-side:top;text-align:start;padding:1rem 1.15rem;font-size:.82rem;color:var(--ink-3)}
th,td{padding:.85rem 1.15rem;text-align:start;border-block-end:1px solid var(--line-2);vertical-align:top}
thead th{background:var(--bg-2);font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);
  font-weight:700;border-block-end:1px solid var(--line);white-space:nowrap}
tbody tr:last-child td{border-block-end:0}
tbody tr:hover{background:#fcfcfd}
td b{font-weight:660}
.tbl-min table{min-width:0}

/* ---------- 10. Figure ---------- */
figure{margin:1.8rem 0}
.fig-box{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;
  display:flex;align-items:center;justify-content:center}
.fig-box svg{width:100%;height:auto}
figcaption{font-size:.82rem;color:var(--ink-3);margin-top:.7rem;line-height:1.55}
.photo{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg-3)}
.photo img{width:100%;aspect-ratio:16/10;object-fit:cover}
.photo.tall img{aspect-ratio:4/5}

/* ---------- 11. Accordion ---------- */
.acc{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.acc details{border-block-end:1px solid var(--line-2)}
.acc details:last-child{border-block-end:0}
.acc summary{
  cursor:pointer;list-style:none;padding:1.2rem 1.45rem;font-weight:620;font-size:.99rem;
  display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;transition:.15s
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{background:var(--bg-2)}
.acc summary::after{content:"+";flex:0 0 auto;font-size:1.2rem;font-weight:400;color:var(--accent);line-height:1.15}
.acc details[open] summary::after{content:"–"}
.acc .body{padding:0 1.45rem 1.4rem;color:var(--ink-2);font-size:.94rem}
.acc .body ul{margin-bottom:0}

/* ---------- 12. Tabs / chips ---------- */
.tabs{display:flex;gap:.4rem;flex-wrap:wrap;border-block-end:1px solid var(--line);margin-bottom:1.6rem}
.tabs button{
  background:none;border:0;border-block-end:2.5px solid transparent;padding:.62rem .9rem;cursor:pointer;
  font-size:.9rem;font-weight:600;color:var(--ink-3);margin-block-end:-1px;
}
.tabs button[aria-selected="true"]{color:var(--ink);border-block-end-color:var(--accent)}
.tabpanel[hidden]{display:none}

.chips{display:flex;gap:.4rem;flex-wrap:wrap}
.chip{background:var(--bg-3);border-radius:999px;padding:.3rem .72rem;font-size:.78rem;color:var(--ink-2);font-weight:560}

.pill{display:inline-flex;align-items:center;gap:.35rem;font-size:.73rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;padding:.28rem .6rem;border-radius:999px;background:var(--navy-soft);color:var(--navy)}
.pill.a{background:var(--accent-soft);color:var(--accent)}
.pill.o{background:var(--ok-soft);color:var(--ok)}
.pill.w{background:var(--warn-soft);color:var(--warn)}

/* ---------- 13. Interactive tools ---------- */
.tool{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(1.2rem,3vw,2rem);
  box-shadow:var(--shadow-sm)}
.tool-head{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;flex-wrap:wrap;
  border-block-end:1px solid var(--line-2);padding-block-end:1rem;margin-bottom:1.3rem}
.tool-head h3{margin:0}
.tool-head p{margin:.25rem 0 0;font-size:.86rem;color:var(--ink-3)}

.field{margin-bottom:1.05rem}
.field label{display:block;font-size:.85rem;font-weight:640;margin-bottom:.35rem}
.field .hint{font-size:.78rem;color:var(--ink-4);font-weight:400;margin-inline-start:.3rem}
.field input[type="number"],.field input[type="text"],.field input[type="email"],.field select,.field textarea{
  width:100%;padding:.62rem .75rem;border:1px solid var(--line);border-radius:9px;font-size:.93rem;
  font-family:inherit;color:var(--ink);background:#fff;transition:.15s
}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,61,47,.12)}
.field .err{color:var(--accent);font-size:.78rem;margin-top:.3rem;display:none}
.field.invalid .err{display:block}
.field.invalid input,.field.invalid select{border-color:var(--accent)}
.fgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 1.1rem}
.hp{position:absolute!important;inset-inline-start:-9999px!important;opacity:0;height:0;overflow:hidden}

.result{margin-top:1.3rem;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-2);padding:1.3rem}
.result.hero-res{background:var(--ink);color:#e9edf1;border-color:var(--ink)}
.result.hero-res h4,.result.hero-res b{color:#fff}
.result .big{font-size:clamp(1.7rem,1.3rem + 1.6vw,2.5rem);font-weight:700;letter-spacing:-.035em;line-height:1.05;color:var(--accent)}
.result.hero-res .big{color:#ff8f76}
.result dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:.4rem 1rem;font-size:.9rem}
.result dt{color:var(--ink-3);font-weight:560}
.result.hero-res dt{color:#a9b6c1}
.result dd{margin:0;font-weight:620}
.rec-list{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.rec-list li{display:flex;gap:.6rem;align-items:flex-start;margin:0}
.rec-list li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:.28rem;border-radius:50%;background:var(--accent);opacity:.9}
.hidden{display:none!important}

/* quiz */
.qz-prog{height:6px;background:var(--bg-3);border-radius:999px;overflow:hidden;margin-bottom:1.4rem}
.qz-prog i{display:block;height:100%;background:var(--accent);width:0;transition:width .35s var(--ease)}
.qz-meta{display:flex;justify-content:space-between;font-size:.8rem;color:var(--ink-3);margin-bottom:.6rem;font-weight:600}
.qz-q{font-size:1.16rem;font-weight:660;line-height:1.4;margin-bottom:1.1rem;letter-spacing:-.015em}
.qz-opts{display:grid;gap:.6rem;margin:0;padding:0;list-style:none}
.qz-opts li{margin:0}
.qz-opt{
  display:flex;gap:.75rem;align-items:flex-start;width:100%;text-align:start;background:#fff;
  border:1px solid var(--line);border-radius:11px;padding:.82rem .95rem;cursor:pointer;font-size:.93rem;
  transition:.15s;color:var(--ink);font-family:inherit;line-height:1.5
}
.qz-opt:hover{border-color:var(--ink-3);background:var(--bg-2)}
.qz-opt .k{flex:0 0 auto;width:23px;height:23px;border-radius:50%;background:var(--bg-3);display:flex;
  align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--ink-2)}
.qz-opt.correct{border-color:var(--ok);background:var(--ok-soft)}
.qz-opt.correct .k{background:var(--ok);color:#fff}
.qz-opt.wrong{border-color:var(--accent);background:var(--accent-soft)}
.qz-opt.wrong .k{background:var(--accent);color:#fff}
.qz-opt[disabled]{cursor:default;opacity:1}
.qz-fb{margin-top:1rem;border-radius:11px;padding:1rem 1.1rem;background:var(--bg-2);border:1px solid var(--line);font-size:.91rem}
.qz-fb.ok{background:var(--ok-soft);border-color:#c9e6d7}
.qz-fb.no{background:var(--accent-soft);border-color:#f2d3cd}
.qz-fb b{display:block;margin-bottom:.3rem}
.qz-nav{display:flex;justify-content:space-between;gap:1rem;margin-top:1.3rem;align-items:center;flex-wrap:wrap}
.qz-score{text-align:center;padding-block:1rem}
.qz-score .ring{font-size:clamp(2.6rem,2rem + 3vw,4rem);font-weight:720;letter-spacing:-.05em;line-height:1}
.qz-score .ring small{font-size:.4em;color:var(--ink-3);font-weight:600}
.qz-score h3{margin:.6rem 0 .4rem}
.qz-bars{display:grid;gap:.3rem;margin-top:1rem}
.qz-bar{display:flex;gap:.5rem;align-items:center;font-size:.82rem}
.qz-bar i{height:8px;border-radius:3px;display:block}
.qz-bar .lbl{flex:0 0 auto;font-weight:620}

/* wizard */
.wz-q{font-weight:660;font-size:1.08rem;margin-bottom:.9rem}
.wz-opts{display:grid;gap:.6rem;list-style:none;padding:0;margin:0}
.wz-opts li{margin:0}
.wz-crumbs{font-size:.78rem;color:var(--ink-4);margin-bottom:1rem;display:flex;gap:.4rem;flex-wrap:wrap}
.wz-crumbs span{background:var(--bg-3);padding:.2rem .55rem;border-radius:6px}
.wz-out{border:1px solid var(--line);background:var(--bg-2);border-radius:var(--radius);padding:1.2rem}
.wz-out h4{margin-bottom:.5rem}

/* floorplan hotspot */
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:.6rem;overflow:hidden}
.hot{cursor:pointer;transition:.18s}
.hot circle.dot{fill:var(--accent);fill-opacity:.16;stroke:var(--accent);stroke-width:2;stroke-dasharray:4 4}
.hot:hover circle.dot,.hot.sel circle.dot{fill-opacity:.42;stroke-dasharray:none}
.hot text{font-size:13px;font-weight:700;fill:var(--accent);text-anchor:middle;pointer-events:none}
.verdict{margin-top:1rem;border:1px solid var(--line);border-radius:var(--radius);padding:1.05rem 1.2rem;background:var(--bg-2)}
.verdict.good{background:var(--ok-soft);border-color:#c9e6d7}
.verdict.bad{background:var(--accent-soft);border-color:#f2d3cd}
.verdict b{display:block;margin-bottom:.25rem}

/* glossary */
.gloss-search{position:relative;margin-bottom:1rem;max-width:420px}
.gloss-search input{width:100%;padding:.7rem 1rem;border:1px solid var(--line);border-radius:999px;font-size:.93rem;font-family:inherit}
.gloss-search input:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px rgba(198,61,47,.12)}
.gloss-letters{display:flex;gap:.28rem;flex-wrap:wrap;margin-bottom:1.4rem}
.gloss-letters button{width:34px;height:32px;border:1px solid var(--line);background:#fff;border-radius:8px;
  font-size:.82rem;font-weight:640;cursor:pointer;color:var(--ink-2)}
.gloss-letters button:hover{border-color:var(--ink-3)}
.gloss-letters button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.gloss{display:grid;gap:.9rem}
.gloss-item{border:1px solid var(--line);border-radius:var(--radius-sm);padding:1rem 1.15rem;background:#fff}
.gloss-item h4{margin-bottom:.25rem}
.gloss-item p{margin:0;font-size:.9rem;color:var(--ink-2)}
.gloss-empty{padding:2rem;text-align:center;color:var(--ink-3);border:1px dashed var(--line);border-radius:var(--radius)}

/* ---------- 14. CTA band ---------- */
.cta-band{background:var(--ink);color:#e9edf1;border-radius:var(--radius-lg);padding:clamp(2.2rem,5vw,3.6rem);
  display:grid;grid-template-columns:1.4fr auto;gap:2.4rem;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset-block-start:-60%;inset-inline-end:-8%;width:420px;height:420px;
  background:radial-gradient(circle,rgba(198,61,47,.32),transparent 62%);pointer-events:none}
.cta-band h2,.cta-band h3{color:#fff;margin-bottom:.6rem}
.cta-band p{margin:0;color:#b9c4cd;max-width:60ch}
.cta-band .btn-row{position:relative;z-index:1}

/* ---------- 15. Footer ---------- */
.ftr{background:var(--ink);color:#98a4ae;padding-block:clamp(3.4rem,6vw,5rem) 0;font-size:.89rem}
.ftr h4{color:#fff;font-size:.755rem;letter-spacing:.15em;text-transform:uppercase;margin-bottom:1.2rem}
.ftr a{color:#c3ccd4}
.ftr a:hover{color:#fff}
.ftr-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.15fr;gap:clamp(1.8rem,3vw,3rem);padding-block-end:3.2rem}
.ftr .brand b{color:#fff}
.ftr .brand span{color:#7b8792}
.ftr ul{list-style:none;padding:0;margin:0}
.ftr li{margin-bottom:.6rem}
.ftr-bottom{border-block-start:1px solid rgba(255,255,255,.1);padding-block:1.4rem;display:flex;
  justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.8rem;color:#7b8792}
.ftr-bottom p{margin:0}
.ftr-note{font-size:.79rem;color:#7b8792;line-height:1.65;margin-top:1.1rem}
.social{display:flex;gap:.5rem;margin-top:1rem}
.social a{width:36px;height:36px;border:1px solid rgba(255,255,255,.16);border-radius:9px;display:flex;
  align-items:center;justify-content:center}
.social a:hover{background:rgba(255,255,255,.1)}
.social svg{width:16px;height:16px}

/* ---------- 15b. Contact e-mail card ---------- */
.mailcard{
  border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  padding:clamp(1.6rem,3.4vw,2.4rem);margin-block:1.6rem;box-shadow:var(--shadow-sm);
}
.mailcard .mc-k{
  font-size:.73rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;
  color:var(--ink-4);margin:0 0 .8rem;
}
.mailcard .mc-a{
  margin:0 0 1.5rem;font-size:clamp(1.25rem,1rem + .95vw,1.85rem);font-weight:680;
  letter-spacing:-.025em;line-height:1.25;word-break:break-word;
}
.mailcard .mc-a a{color:var(--ink)}
.mailcard .mc-a a:hover{color:var(--accent)}
.mailcard .mc-row{display:flex;gap:.7rem;flex-wrap:wrap;margin-bottom:1.2rem}
.mailcard .mc-hint{
  margin:0;font-size:.83rem;line-height:1.6;color:var(--ink-3);
  padding-top:1.2rem;border-block-start:1px solid var(--line-2);
}
.mailcard .mc-hint b{color:var(--ink-2);font-weight:640}

/* ---------- 16. Reveal animation ---------- */
.rv{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
}

/* ---------- 17. Utilities ---------- */
.u-mb0{margin-bottom:0}
.u-mt0{margin-top:0}
.u-mt2{margin-top:2rem}
.u-mt3{margin-top:3rem}
.nowrap{white-space:nowrap}
.two-col{columns:2;column-gap:2.4rem}
@media (max-width:700px){.two-col{columns:1}}
.linklist{list-style:none;padding:0;margin:0}
.linklist li{border-block-end:1px solid var(--line-2);margin:0}
.linklist a{display:flex;justify-content:space-between;gap:1rem;padding:.78rem .1rem;font-size:.92rem;font-weight:560}
.linklist a::after{content:"→";color:var(--accent);flex:0 0 auto}
[dir="rtl"] .linklist a::after{content:"←"}
.linklist a:hover{color:var(--accent)}
.notice{background:var(--warn-soft);border:1px solid #f0e0bf;border-radius:var(--radius-sm);padding:1rem 1.15rem;
  font-size:.86rem;color:#6b5316}

/* ---------- 18. Responsive ---------- */
@media (max-width:1120px){
  .nav{display:none}
  .burger{display:flex}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ftr-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:2.8rem}
}
@media (max-width:900px){
  body{font-size:16.5px}
  .hero-grid,.split{grid-template-columns:1fr;gap:2.4rem}
  .split.rev>*:first-child{order:0}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;gap:1.6rem}
  .cta-band .btn-row{justify-content:flex-start}
  .topbar{display:none}
}
@media (max-width:680px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr}
  .ftr-grid{grid-template-columns:1fr 1fr;row-gap:2.2rem}
  .hero-media{aspect-ratio:4/3}
  .tbl-wrap{margin-inline:calc(-1 * var(--gutter));border-radius:0;border-inline:0}
  table{font-size:.85rem;min-width:520px}
  .ftr-bottom{flex-direction:column}
  .brand .bwrap>span{display:none}
  .qz-nav{gap:.6rem}
  .hero-badge{max-width:92%}
}
@media (max-width:420px){
  .ftr-grid{grid-template-columns:1fr}
  .mailcard .mc-row .btn{width:100%}
}

/* ---------- 19. RTL tweaks ---------- */
[dir="rtl"] .card .more::after,[dir="rtl"] .nav-menu a::after{content:""}
[dir="rtl"] .lang-menu{text-align:right}
[dir="rtl"] body{letter-spacing:0}

/* ---------- 20. Print ---------- */
@media print{
  .hdr,.ftr,.drawer,.topbar,.cta-band,.tool-head .btn,.no-print{display:none!important}
  body{font-size:11.5pt;color:#000}
  .section{padding-block:1rem}
  .card,.tool,.acc{box-shadow:none;border-color:#ccc}
  a{color:#000}
  a[href^="http"]::after{content:" (" attr(href) ")";font-size:9pt;color:#555}
}