/* ---------- Theme tokens ---------- */
:root{
  --volt:#D4FF3A; --warn:#E5484D; --ok:#1F9D55;
  --bg:#FAFAF7; --card:#FFFFFF; --tint:#EFF0EA; --line:#E4E5E0;
  --text:#14161B; --text-2:#3B404A; --muted:#6A707C;
  --panel:#14161B; --panel-2:#1F2229; --panel-text:#C9CCD3; --panel-line:#2A2E36;
  --btn-bg:#14161B; --btn-fg:#D4FF3A; --head-bg:rgba(250,250,247,.92);
  --shadow:rgba(20,22,27,.10); --orb-2:#E9FF9A;
  --r:16px; --wrap:1120px; --fs:100%;
  --h:"Space Grotesk",system-ui,sans-serif; --b:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --warn:#FF6B70; --ok:#3DD68C;
  --bg:#0E1014; --card:#171A20; --tint:#13161B; --line:#272B33;
  --text:#ECEDEF; --text-2:#B9BDC6; --muted:#8C929C;
  --panel:#171A20; --panel-2:#1F232A; --panel-text:#B9BDC6; --panel-line:#2A2E36;
  --btn-bg:#D4FF3A; --btn-fg:#14161B; --head-bg:rgba(14,16,20,.9);
  --shadow:rgba(0,0,0,.45); --orb-2:#3A4A12;
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --warn:#FF6B70; --ok:#3DD68C;
    --bg:#0E1014; --card:#171A20; --tint:#13161B; --line:#272B33;
    --text:#ECEDEF; --text-2:#B9BDC6; --muted:#8C929C;
    --panel:#171A20; --panel-2:#1F232A; --panel-text:#B9BDC6; --panel-line:#2A2E36;
    --btn-bg:#D4FF3A; --btn-fg:#14161B; --head-bg:rgba(14,16,20,.9);
    --shadow:rgba(0,0,0,.45); --orb-2:#3A4A12;
    color-scheme:dark;
  }
}
/* Text size steps (set by the A- / A+ buttons) */
:root[data-size="1"]{--fs:112.5%}
:root[data-size="2"]{--fs:125%}
:root[data-size="3"]{--fs:137.5%}

/* ---------- Base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;font-size:var(--fs)}
body{margin:0;background:var(--bg);color:var(--text);font:400 1.0625rem/1.65 var(--b);-webkit-font-smoothing:antialiased;transition:background-color .2s,color .2s}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--h);line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em}
h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:700}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700}
h3{font-size:1.1rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--volt);color:#14161B;padding:8px 12px;z-index:99}
.ic{width:1.1em;height:1.1em;flex:none}
.ic-lg{width:40px;height:40px;flex:none}
mark{background:linear-gradient(transparent 55%,var(--volt) 55%);color:inherit;padding:0 .1em}
:root[data-theme="dark"] mark{color:var(--text);background:linear-gradient(transparent 55%,rgba(212,255,58,.35) 55%)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) mark{background:linear-gradient(transparent 55%,rgba(212,255,58,.35) 55%)}}
:focus-visible{outline:3px solid var(--volt);outline-offset:2px}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:20;background:var(--head-bg);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none;text-decoration:none;font:700 1.25rem var(--h);color:var(--text)}
.brand b{color:#14161B;background:var(--volt);border-radius:6px;padding:0 4px;margin:0 2px}
.logo-mark{width:36px;height:36px;flex:none}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:nowrap;white-space:nowrap}
.nav a{text-decoration:none;font-size:.88rem;font-weight:500;color:var(--text-2);padding:8px 10px;border-radius:8px}
.nav a:hover{background:var(--tint);color:var(--text)}
.tools{display:flex;gap:4px;align-items:center}
.tool{display:grid;place-items:center;min-width:38px;height:38px;padding:0 8px;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;cursor:pointer;font:700 .85rem var(--b);line-height:1}
.tool:hover{border-color:var(--text-2)}
.tool:disabled{opacity:.4;cursor:default}
.tool .ic{width:18px;height:18px}
.tool .moon{display:block}.tool .sun{display:none}
:root[data-theme="dark"] .tool .moon{display:none}
:root[data-theme="dark"] .tool .sun{display:block}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .tool .moon{display:none}
  :root:not([data-theme="light"]) .tool .sun{display:block}
}
.menu-btn{display:none;place-items:center;width:38px;height:38px;padding:0;border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;cursor:pointer}
.menu-btn .ic{width:20px;height:20px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--btn-bg);color:var(--btn-fg);text-decoration:none;font:600 .95rem var(--b);padding:12px 18px;border-radius:12px;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px var(--shadow)}
.btn.ghost{background:transparent;color:var(--text);border:1.5px solid var(--text)}
.txt{font-weight:600;font-size:.95rem}

/* ---------- Hero ---------- */
.hero{padding:72px 0 56px}
.hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.kicker{font:600 .8rem var(--b);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.hero-sub{font-size:1.15rem;color:var(--text-2);max-width:560px}
.hero-act{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero-art{position:relative;display:grid;place-items:center;aspect-ratio:1}
.hero-art .logo-mark{width:58%;height:auto;position:relative;transform:rotate(-8deg);filter:drop-shadow(0 24px 40px var(--shadow))}
.orb{position:absolute;inset:8%;border-radius:50%;background:radial-gradient(circle at 30% 30%,var(--volt),var(--orb-2) 45%,transparent 70%)}

/* ---------- Sections ---------- */
.sec{margin:56px 0 24px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.cat{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;text-decoration:none;transition:transform .15s,box-shadow .15s}
.cat:hover{transform:translateY(-3px);box-shadow:0 14px 30px var(--shadow)}
.cat-ic{width:48px;height:48px;border-radius:12px;background:#14161B;color:var(--volt);display:grid;place-items:center;margin-bottom:14px;border:1px solid var(--line)}
.cat-ic .ic{width:24px;height:24px}
.cat-tag{font:600 .75rem var(--b);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.cat p{color:var(--text-2);font-size:.95rem;flex:1}
.go{display:flex;align-items:center;gap:6px;font-weight:600;font-size:.92rem}
.band{background:var(--panel);color:#fff;margin-top:64px;padding:8px 0 56px;border-block:1px solid var(--panel-line)}
.band .sec{color:#fff}
.top-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.top{background:var(--panel-2);border-radius:var(--r);padding:24px;display:flex;flex-direction:column}
.top p{color:var(--panel-text);font-size:.95rem;flex:1}
.top .btn{background:var(--volt);color:#14161B}
.top .txt{color:#fff}
.top-act{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.badge{align-self:flex-start;display:inline-block;background:var(--volt);color:#14161B;font:700 .72rem var(--b);letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px;margin-bottom:10px}
.why{padding-bottom:72px}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.why-grid div{border-top:3px solid var(--text);padding-top:16px}
.why-grid p{color:var(--text-2)}

/* ---------- Guides ---------- */
.g-hero{padding:48px 0 28px;border-bottom:1px solid var(--line)}
.g-hero h1{max-width:860px}
.crumb{font-size:.88rem;color:var(--muted)}.crumb a{color:var(--muted)}
.meta{color:var(--muted);font-size:.92rem;margin:0 0 6px}
.disc-inline{font-size:.85rem;color:var(--muted);margin:0}
.g-body{padding-top:36px}
.g-main{max-width:780px}
.lead{font-size:1.12rem;color:var(--text-2)}
.quick{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;margin:28px 0 36px}
.quick h2{font-size:1.15rem}
.quick ul{list-style:none;margin:0;padding:0}
.quick li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-top:1px solid var(--line);font-size:.96rem}
.quick li:first-child{border-top:0}
.quick span{color:var(--muted)}
.quick a{font-weight:600;text-align:right}
.pick{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;margin-bottom:24px;scroll-margin-top:90px}
.pick-head{display:flex;gap:16px;align-items:flex-start}
.num{font:700 1.5rem var(--h);color:#14161B;background:var(--volt);border-radius:12px;min-width:52px;height:52px;display:grid;place-items:center}
.pick h2{font-size:1.45rem;margin:0}
.pick>p{margin-top:14px;color:var(--text-2)}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:6px 0 20px}
.pc h3{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.pc ul{list-style:none;margin:0;padding:0}
.pc li{display:flex;gap:8px;font-size:.94rem;margin-bottom:8px}
.pros .ic{color:var(--ok);margin-top:.3em}.cons .ic{color:var(--warn);margin-top:.3em}
.buying{margin:48px 0}
.tip{padding:16px 0;border-top:1px solid var(--line)}
.tip p{color:var(--text-2);margin:0}
.safety{display:flex;gap:18px;background:var(--panel);color:#fff;border:1px solid var(--panel-line);border-radius:var(--r);padding:26px;margin:40px 0}
.safety .ic-lg{color:var(--volt)}
.safety h2{font-size:1.2rem;color:var(--volt)}
.safety p{margin:0;color:var(--panel-text)}
.faq details{border-top:1px solid var(--line);padding:14px 0}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:10px 0 0;color:var(--text-2)}
.method{font-size:.9rem;color:var(--muted);margin:36px 0 56px;padding-top:20px;border-top:1px solid var(--line)}
.more{background:var(--tint);padding:40px 0 56px;border-top:1px solid var(--line)}
.mini-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.mini{display:flex;align-items:center;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;font-weight:600}
.prose{max-width:760px;padding-top:32px;padding-bottom:72px}
.prose h2{font-size:1.3rem;margin-top:1.6em}
.prose p,.prose li{color:var(--text-2)}
.big-mail{font:700 1.4rem var(--h)}

/* ---------- Footer ---------- */
.site-foot{background:var(--panel);color:var(--panel-text);padding:48px 0 24px;border-top:1px solid var(--panel-line)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.site-foot h3{color:#fff;font-size:.9rem;text-transform:uppercase;letter-spacing:.08em}
.site-foot a{display:block;text-decoration:none;font-size:.93rem;margin-bottom:8px;color:var(--panel-text)}
.site-foot a:hover{color:var(--volt)}
.brand-foot{display:flex!important;color:#fff!important;font-size:1.2rem!important;margin-bottom:12px}
.brand-foot .logo-mark rect{fill:#2A2E36}
.foot-legal{border-top:1px solid var(--panel-line);margin-top:32px;padding-top:20px;font-size:.82rem;color:#9AA0A8}

/* ---------- Responsive ---------- */
@media (max-width:1060px){
  .menu-btn{display:grid}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);flex-direction:column;padding:12px 20px 20px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .tools{margin-left:auto}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}.hero-art{display:none}
  .why-grid,.foot-grid{grid-template-columns:1fr}
}
@media (max-width:600px){
  body{font-size:1rem}
  .head-row{gap:10px}
  .brand{font-size:1.05rem}.logo-mark{width:30px;height:30px}
  .tool{min-width:34px;height:34px;padding:0 6px}
  .pc{grid-template-columns:1fr}
  .pick{padding:22px}
  .quick li{flex-direction:column;gap:2px}.quick a{text-align:left}
  .hero{padding:44px 0 32px}
}
@media (max-width:400px){
  .wrap{padding:0 14px}.head-row{gap:6px}.brand{gap:6px;font-size:.98rem}.menu-btn{width:34px;height:34px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}