:root{
--bg:#f5f1e7;--surface:#fffdf8;--surface-2:#f0ede4;--text:#17231e;--muted:#6a756e;--line:#d7ddd6;
--green:#0f6b57;--green-dark:#0a4a3d;--amber:#d99632;--amber-2:#f1bd62;--mint:#dff1e9;--blue:#8eabb8;--rose:#c9897f;
--shadow:0 26px 70px rgba(25,40,33,.11);--shadow-soft:0 12px 30px rgba(25,40,33,.07)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:
radial-gradient(circle at 7% -2%,rgba(217,150,50,.16),transparent 25%),
radial-gradient(circle at 93% 8%,rgba(15,107,87,.13),transparent 30%),
linear-gradient(180deg,#fbf8f1 0%,var(--bg) 100%);
color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;min-height:100vh}
button,input,select{font:inherit}button{cursor:pointer}
.page-shell{width:min(1220px,calc(100% - 32px));margin:auto;padding:24px 0 72px}
.site-header{display:flex;justify-content:space-between;align-items:center;gap:20px}
.brand-row{display:flex;align-items:center;gap:14px;color:inherit;text-decoration:none}.brand-name{font-weight:850;font-size:1.18rem;letter-spacing:-.03em}
.eyebrow{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green);font-weight:850}
.header-actions{display:flex;gap:8px;align-items:center}.lang-select,.icon-button{border:1px solid var(--line);background:rgba(255,253,248,.82);backdrop-filter:blur(10px);border-radius:999px;color:var(--text)}
.lang-select{padding:9px 12px}.icon-button{width:40px;height:40px}
.hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;align-items:center;gap:40px;padding:56px 0 30px}
.hero-kicker{display:inline-flex;padding:7px 11px;border:1px solid rgba(15,107,87,.18);background:rgba(223,241,233,.7);border-radius:999px;color:var(--green);font-size:.74rem;font-weight:800;margin-bottom:18px}
.hero h1{font-size:clamp(2.8rem,5.8vw,5.8rem);line-height:.92;letter-spacing:-.072em;margin:0 0 18px;max-width:900px}.hero h1 span{color:var(--green)}
.lede{max-width:780px;color:var(--muted);font-size:1.12rem;line-height:1.65;margin:0}
.hero-lab{position:relative;height:220px}.hero-flask{position:absolute;left:72px;bottom:8px;width:130px;height:128px;border:4px solid var(--green);border-top:0;border-radius:16px 16px 46px 46px;overflow:hidden;transform:rotate(-5deg);box-shadow:var(--shadow-soft)}
.hero-flask:before{content:"";position:absolute;left:42px;top:-63px;width:40px;height:68px;border:4px solid var(--green);border-bottom:0;border-radius:8px 8px 0 0}
.hero-fluid{position:absolute;left:-5px;right:-5px;bottom:-5px;height:56%;background:linear-gradient(180deg,var(--amber-2),var(--amber))}
.hero-flask i,.hero-flask b,.hero-flask em{position:absolute;border-radius:50%;background:rgba(15,107,87,.55)}.hero-flask i{width:11px;height:11px;left:28px;top:36px}.hero-flask b{width:8px;height:8px;right:25px;top:48px}.hero-flask em{width:6px;height:6px;right:45px;top:25px}
.hero-tube{position:absolute;right:35px;top:20px;width:36px;height:150px;border:4px solid var(--green);border-radius:9px 9px 22px 22px;overflow:hidden}.hero-tube div{position:absolute;bottom:0;left:0;right:0;height:44%;background:rgba(142,171,184,.45)}
.hero-orbit{position:absolute;left:2px;top:25px;width:110px;height:110px;border:2px solid rgba(15,107,87,.45);border-radius:50%;transform:rotate(28deg)}.hero-orbit:before{content:"";position:absolute;left:17px;top:48px;width:72px;height:2px;background:rgba(15,107,87,.35);transform:rotate(90deg)}.hero-orbit span,.hero-orbit i{position:absolute;width:11px;height:11px;border-radius:50%;background:var(--amber)}.hero-orbit span{right:8px;top:26px}.hero-orbit i{left:10px;bottom:22px;background:var(--green)}
.tool-discovery{display:flex;gap:14px;align-items:center;margin-bottom:18px}.search-wrap{position:relative;width:min(320px,100%)}.search-wrap span{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}.search-wrap input{width:100%;border:1px solid var(--line);background:rgba(255,253,248,.82);border-radius:999px;padding:11px 16px 11px 38px;color:var(--text)}
.category-nav{display:flex;gap:8px;overflow:auto;padding:4px 0;scrollbar-width:none;flex:1}.category-nav::-webkit-scrollbar{display:none}
.category-button{white-space:nowrap;border:1px solid var(--line);background:rgba(255,253,248,.82);padding:10px 14px;border-radius:999px;color:var(--text);transition:.18s}.category-button:hover{transform:translateY(-1px);border-color:#bbc8c0}.category-button.active{background:var(--green);border-color:var(--green);color:#fff}
.converter-layout{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(320px,.78fr);gap:24px}
.converter-panel,.visual-panel{background:rgba(255,253,248,.94);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);backdrop-filter:blur(8px)}
.converter-panel{padding:30px}.visual-panel{padding:26px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden;position:relative}
.section-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:24px}.section-heading h2{font-size:1.9rem;letter-spacing:-.04em;margin:4px 0 0}
.ghost-button{border:1px solid var(--line);background:#fffdf8;padding:10px 15px;border-radius:999px;color:var(--text)}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field-label{display:block;color:var(--muted);font-size:.84rem;margin-bottom:8px}
.input-group{display:grid;grid-template-columns:minmax(0,1fr) auto;border:1px solid var(--line);border-radius:19px;overflow:hidden;background:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.8)}
.input-group:focus-within{outline:3px solid rgba(15,107,87,.12);border-color:var(--green)}
.input-group input,.input-group output,.input-group select{border:0;background:transparent;color:var(--text)}
.input-group input,.input-group output{padding:17px 18px;font-size:1.36rem;font-weight:760}.input-group output{display:block}.input-group select{border-left:1px solid var(--line);padding:0 13px;max-width:170px}
.formula-card{margin-top:17px;padding:17px 18px;background:linear-gradient(135deg,var(--mint),#f4ead4);border-radius:19px;color:var(--green-dark);font-weight:850}
.precision-note{display:flex;gap:10px;margin-top:15px;color:var(--muted);font-size:.82rem;line-height:1.5}.precision-note strong{color:var(--text);white-space:nowrap}
.visual-caption{text-align:center;margin-top:12px;max-width:300px}.caption-label{display:block;color:var(--muted);font-size:.75rem}.visual-caption strong{display:block;font-size:1.48rem;margin:5px 0}.visual-caption span:last-child{color:var(--muted);line-height:1.45}
.lab-logo{position:relative;width:48px;height:54px}.flask-neck{position:absolute;left:18px;top:2px;width:14px;height:18px;border:2px solid var(--green);border-bottom:0;border-radius:4px 4px 0 0}.flask-body{position:absolute;left:7px;top:17px;width:36px;height:34px;border:2px solid var(--green);border-radius:8px 8px 16px 16px;overflow:hidden;transform:skewX(-4deg)}.flask-liquid{position:absolute;left:-2px;right:-2px;bottom:-2px;height:16px;background:var(--amber);opacity:.9}.flask-body i,.flask-body b{position:absolute;border-radius:50%;background:var(--green);opacity:.45}.flask-body i{width:5px;height:5px;left:8px;top:8px}.flask-body b{width:4px;height:4px;right:8px;top:13px}
.tool-groups{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:24px}.tool-group-card{display:flex;gap:18px;align-items:center;background:rgba(255,253,248,.78);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-soft)}.group-icon{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;font-size:1.5rem}.chem-icon{background:var(--mint);color:var(--green)}.phys-icon{background:#f2e4c8;color:#a76f1e}.tool-group-card h3{margin:2px 0 5px;font-size:1.2rem}.tool-group-card p{margin:0;color:var(--muted);line-height:1.5}
body.high-contrast{--bg:#121816;--surface:#17211d;--surface-2:#1d2924;--text:#f5f8f6;--muted:#aab5af;--line:#31423a;--green:#66d5b8;--green-dark:#b8f4e5;--amber:#f2b95c;--mint:#203f36}
body.high-contrast .converter-panel,body.high-contrast .visual-panel,body.high-contrast .tool-group-card,body.high-contrast .category-button,body.high-contrast .lang-select,body.high-contrast .icon-button,body.high-contrast .search-wrap input{background:#17211d}
body.high-contrast .input-group,body.high-contrast .ghost-button{background:#111815}
@media(max-width:900px){.hero{grid-template-columns:1fr}.hero-lab{display:none}.converter-layout{grid-template-columns:1fr}.visual-panel{min-height:380px}.field-grid{grid-template-columns:1fr}.tool-discovery{align-items:flex-start;flex-direction:column}.category-nav{width:100%}.tool-groups{grid-template-columns:1fr}}
@media(max-width:520px){.page-shell{width:min(100% - 18px,520px)}.converter-panel,.visual-panel{padding:18px;border-radius:22px}.section-heading h2{font-size:1.5rem}.hero{padding-top:38px}.hero h1{font-size:2.7rem}.input-group select{max-width:140px}.precision-note{flex-direction:column;gap:4px}}

.ribbon-shell{position:relative;display:flex;align-items:center;min-width:0;flex:1}
.category-nav{scroll-snap-type:x proximity;scroll-behavior:smooth;padding-right:42px;padding-left:4px}
.category-button{scroll-snap-align:start}
.ribbon-arrow{position:absolute;z-index:5;width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:rgba(255,253,248,.94);color:var(--green);font-size:1.45rem;display:grid;place-items:center;box-shadow:var(--shadow-soft);transition:.2s}
.ribbon-arrow:hover{transform:scale(1.05)}
.ribbon-arrow.prev{left:4px;opacity:0;pointer-events:none}
.ribbon-arrow.next{right:4px;animation:nudgeArrow 2.8s ease-in-out infinite}
.ribbon-shell.can-prev .ribbon-arrow.prev{opacity:1;pointer-events:auto}
.ribbon-shell.at-end .ribbon-arrow.next{opacity:0;pointer-events:none;animation:none}
.ribbon-mask{position:absolute;top:0;bottom:0;width:46px;z-index:4;pointer-events:none}
.ribbon-mask.left{left:0;background:linear-gradient(90deg,var(--bg),rgba(245,241,231,0))}
.ribbon-mask.right{right:0;background:linear-gradient(270deg,var(--bg),rgba(245,241,231,0))}
.ribbon-shell:not(.can-prev) .ribbon-mask.left{opacity:0}
.ribbon-shell.at-end .ribbon-mask.right{opacity:0}
@keyframes nudgeArrow{0%,72%,100%{transform:translateX(0)}82%{transform:translateX(4px)}90%{transform:translateX(0)}}
.category-nav.first-hint{animation:ribbonHint .9s ease-out 1}
@keyframes ribbonHint{0%{transform:translateX(0)}45%{transform:translateX(-16px)}100%{transform:translateX(0)}}

@media(max-width:900px){
  .tool-discovery{gap:12px}
  .ribbon-shell{width:100%}
  .category-nav{padding:2px 38px 2px 2px;scroll-snap-type:x mandatory}
  .category-button{padding:11px 15px;min-height:42px}
  .ribbon-arrow{width:32px;height:32px;font-size:1.35rem}
}
@media(max-width:520px){
  .search-wrap{display:none}
  .tool-discovery{margin-bottom:14px}
  .category-nav{gap:7px;padding-right:36px}
  .category-button{font-size:.9rem;padding:10px 13px;min-height:40px}
  .ribbon-mask{width:38px}
  .ribbon-arrow.prev{display:none}
  .ribbon-arrow.next{right:2px;width:30px;height:30px}
  .hero{padding-bottom:18px}
}

/* v7 — lightweight day/night polish */
:root{
  --night-bg:#101714;
  --night-surface:#17201c;
  --night-surface-2:#1d2924;
  --night-text:#f4f7f5;
  --night-muted:#a9b4ae;
  --night-line:#314139;
  --night-green:#78e0c4;
  --night-green-strong:#9af2db;
  --night-amber:#f4bd63;
  --night-blue:#8fc8dc;
}

/* Premium toggle without external assets */
.icon-button{
  position:relative;
  overflow:hidden;
  font-size:0;
}
.icon-button::before,
.icon-button::after{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  font-size:.95rem;
  line-height:1;
  transition:opacity .18s ease,transform .18s ease;
}
.icon-button::before{content:"☀";left:8px;color:var(--amber)}
.icon-button::after{content:"☾";right:8px;color:var(--green);opacity:.42}
body.high-contrast .icon-button::before{opacity:.35}
body.high-contrast .icon-button::after{opacity:1;color:var(--night-green-strong)}

/* Dark mode is a real palette, not an inversion */
body.high-contrast{
  --bg:var(--night-bg);
  --surface:var(--night-surface);
  --surface-2:var(--night-surface-2);
  --text:var(--night-text);
  --muted:var(--night-muted);
  --line:var(--night-line);
  --green:var(--night-green);
  --green-dark:var(--night-green-strong);
  --amber:var(--night-amber);
  --amber-2:#ffd58a;
  --mint:#1d3b32;
  --blue:var(--night-blue);
  --rose:#e0a69c;
  --shadow:0 18px 50px rgba(0,0,0,.18);
  --shadow-soft:0 8px 24px rgba(0,0,0,.12);
  background:
    radial-gradient(circle at 7% -2%,rgba(244,189,99,.07),transparent 25%),
    radial-gradient(circle at 93% 8%,rgba(120,224,196,.08),transparent 30%),
    linear-gradient(180deg,#111815 0%,#0d1311 100%);
}
body.high-contrast .hero h1 span,
body.high-contrast .eyebrow,
body.high-contrast .brand-name{
  color:var(--night-green-strong);
}
body.high-contrast .converter-panel,
body.high-contrast .visual-panel,
body.high-contrast .tool-group-card,
body.high-contrast .category-button,
body.high-contrast .lang-select,
body.high-contrast .icon-button,
body.high-contrast .search-wrap input,
body.high-contrast .ghost-button{
  background:rgba(23,32,28,.96);
  border-color:var(--night-line);
}
body.high-contrast .input-group{
  background:#111815;
  border-color:var(--night-line);
}
body.high-contrast .formula-card{
  background:linear-gradient(135deg,rgba(120,224,196,.13),rgba(244,189,99,.10));
  color:var(--night-green-strong);
}
body.high-contrast .category-button.active{
  background:var(--night-green);
  border-color:var(--night-green);
  color:#0b1713;
}
body.high-contrast .ribbon-mask.left{background:linear-gradient(90deg,var(--night-bg),rgba(16,23,20,0))}
body.high-contrast .ribbon-mask.right{background:linear-gradient(270deg,var(--night-bg),rgba(16,23,20,0))}
body.high-contrast .ribbon-arrow{
  background:#18231e;
  color:var(--night-green-strong);
  border-color:var(--night-line);
}

/* CSS science drawings: brighter strokes, no heavy glow */
body.high-contrast .visual-panel{
  box-shadow:0 18px 45px rgba(0,0,0,.16);
}
body.high-contrast .ambient-grid{
  opacity:.18;
}
body.high-contrast .thermo-tube,
body.high-contrast .beaker-glass,
body.high-contrast .piston-chamber,
body.high-contrast .density-tank,
body.high-contrast .chem-beaker,
body.high-contrast .chem-flask,
body.high-contrast .conc-column{
  border-color:var(--night-green);
  background:rgba(255,255,255,.018);
}
body.high-contrast .balance-post,
body.high-contrast .balance-beam,
body.high-contrast .pan,
body.high-contrast .piston-rod,
body.high-contrast .spring-hook,
body.high-contrast .electric-line,
body.high-contrast .angle-ray,
body.high-contrast .ruler-body{
  filter:none;
}
body.high-contrast .energy-core,
body.high-contrast .thermo-bulb,
body.high-contrast .spring-weight,
body.high-contrast .bolt-shape{
  box-shadow:none;
}

/* Keep animation cheap */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
}
@media(max-width:520px){
  .energy-orbit,.wave-line:before,.ribbon-arrow.next{animation:none!important}
  .ambient-grid{display:none}
  .converter-panel,.visual-panel{box-shadow:0 10px 28px rgba(25,40,33,.07)}
  body.high-contrast .converter-panel,
  body.high-contrast .visual-panel{box-shadow:0 8px 24px rgba(0,0,0,.12)}
}

.article-shell{width:min(1180px,calc(100% - 32px));margin:0 auto;padding-bottom:72px}
.breadcrumbs{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:.82rem;margin-top:12px}
.breadcrumbs a{color:inherit;text-decoration:none}
.intent-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:34px;align-items:center;padding:48px 0 28px}
.intent-hero h1{font-size:clamp(2.7rem,5.4vw,5.3rem);line-height:.93;letter-spacing:-.065em;margin:0 0 16px}
.intent-hero h1 span{color:var(--green)}
.intent-hero p{max-width:720px;color:var(--muted);font-size:1.08rem;line-height:1.65}
.quick-answer{display:inline-flex;align-items:center;gap:10px;background:var(--mint);color:var(--green-dark);border:1px solid rgba(15,107,87,.12);padding:10px 14px;border-radius:999px;font-weight:800;margin-bottom:18px}
.speed-hero-visual{position:relative;width:230px;height:190px;margin:auto}
.speed-hero-road{position:absolute;left:18px;right:18px;bottom:32px;height:10px;background:var(--green);border-radius:10px}
.speed-hero-road:after{content:"";position:absolute;left:0;right:0;top:4px;border-top:2px dashed rgba(255,255,255,.55)}
.speed-hero-car{position:absolute;left:66px;bottom:44px;width:94px;height:42px;background:var(--amber);border-radius:18px 22px 10px 10px}
.speed-hero-car:before{content:"";position:absolute;left:20px;top:-18px;width:50px;height:24px;background:var(--green);border-radius:18px 18px 4px 4px}
.speed-hero-car i,.speed-hero-car b{position:absolute;bottom:-11px;width:22px;height:22px;border-radius:50%;background:var(--text);box-shadow:inset 0 0 0 6px var(--surface)}
.speed-hero-car i{left:13px}.speed-hero-car b{right:13px}
.speed-hero-arrow{position:absolute;right:4px;top:46px;font-size:3rem;color:var(--green);font-weight:900}
.speed-hero-label{position:absolute;right:14px;top:104px;font-weight:900;color:var(--green)}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:30px;margin-top:30px}
.article-content{min-width:0}
.article-section{padding:28px 0;border-bottom:1px solid var(--line)}
.article-section:first-child{padding-top:0}
.article-section h2{font-size:clamp(1.6rem,3vw,2.25rem);letter-spacing:-.035em;margin:0 0 12px}
.article-section p{color:var(--muted);line-height:1.75;margin:0 0 14px}
.formula-box{background:linear-gradient(135deg,var(--mint),#f4ead4);border:1px solid var(--line);border-radius:20px;padding:20px;font-size:1.2rem;font-weight:850;color:var(--green-dark);margin:18px 0}
.example-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;margin-top:14px;box-shadow:var(--shadow-soft)}
.example-card strong{display:block;margin-bottom:6px;color:var(--text)}
.example-card p{margin:0}
.conversion-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.conversion-table{width:100%;border-collapse:collapse}
.conversion-table th,.conversion-table td{padding:13px 16px;border-bottom:1px solid var(--line);text-align:right}
.conversion-table th:first-child,.conversion-table td:first-child{text-align:left}
.conversion-table thead th{background:var(--surface-2);font-size:.82rem;color:var(--muted)}
.conversion-table tbody tr:last-child td{border-bottom:0}
.sidebar{position:sticky;top:20px;align-self:start}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow-soft);margin-bottom:16px}
.side-card h3{margin:0 0 10px;font-size:1.05rem}
.side-links{display:grid;gap:8px}
.side-links a{display:flex;justify-content:space-between;gap:12px;text-decoration:none;color:var(--text);padding:10px 0;border-bottom:1px solid var(--line)}
.side-links a:last-child{border-bottom:0}
.side-links span{color:var(--muted)}
.faq-item{padding:16px 0;border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item h3{margin:0 0 8px;font-size:1rem}
.faq-item p{margin:0}
@media(max-width:900px){
  .intent-hero{grid-template-columns:1fr}
  .speed-hero-visual{display:none}
  .content-grid{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media(max-width:520px){
  .article-shell{width:min(100% - 18px,520px)}
  .intent-hero{padding-top:28px}
  .intent-hero h1{font-size:2.55rem}
  .quick-answer{font-size:.88rem;white-space:normal;border-radius:16px}
  .article-section{padding:24px 0}
  .conversion-table th,.conversion-table td{padding:11px 12px}
}

.language-menu{display:flex;gap:5px;align-items:center;border:1px solid var(--line);border-radius:999px;padding:5px;background:var(--surface)}
.language-menu a{color:var(--muted);text-decoration:none;font-size:.72rem;font-weight:800;padding:5px 6px;border-radius:999px}
.language-menu a:hover{color:var(--green);background:var(--mint)}
.top-tools-link{text-decoration:none;color:var(--text)}
.theme-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:24px}
.theme-card{display:block;text-decoration:none;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow-soft);transition:transform .18s ease}
.theme-card:hover{transform:translateY(-2px)}
.theme-card strong{display:block;font-size:1.1rem;margin:8px 0 5px}
.theme-card span{color:var(--muted);font-size:.84rem}
.conversion-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:20px}
.conversion-link{display:flex;justify-content:space-between;align-items:center;gap:12px;text-decoration:none;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 15px}
.conversion-link b{color:var(--green)}
.section-copy{max-width:760px;color:var(--muted);line-height:1.7}
.simple-hero{padding:52px 0 20px}
.simple-hero h1{font-size:clamp(2.7rem,5.6vw,5.5rem);line-height:.94;letter-spacing:-.065em;margin:0 0 15px}
.simple-hero h1 span{color:var(--green)}
@media(max-width:900px){
  .theme-grid{grid-template-columns:repeat(2,1fr)}
  .conversion-list{grid-template-columns:repeat(2,1fr)}
  .top-tools-link{display:none}
}
@media(max-width:620px){
  .site-header{align-items:flex-start}
  .header-actions{gap:5px}
  .language-menu{max-width:190px;overflow-x:auto}
  .language-menu a{font-size:.67rem;padding:5px}
  .theme-grid{grid-template-columns:1fr 1fr;gap:9px}
  .theme-card{padding:15px;border-radius:18px}
  .conversion-list{grid-template-columns:1fr}
  .simple-hero{padding-top:30px}
  .simple-hero h1{font-size:2.6rem}
}